CN105250033A - Intervention medical instrument, conveying cable body and intervention medical apparatus - Google Patents
Intervention medical instrument, conveying cable body and intervention medical apparatus Download PDFInfo
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- CN105250033A CN105250033A CN201510685051.7A CN201510685051A CN105250033A CN 105250033 A CN105250033 A CN 105250033A CN 201510685051 A CN201510685051 A CN 201510685051A CN 105250033 A CN105250033 A CN 105250033A
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- stopper section
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Abstract
The invention relates to an intervention medical apparatus for intervention treatment, an intervention medical instrument and a conveying cable body of the intervention medical instrument. The intervention medical apparatus comprises an instrument having a bolt head part and a conveying cable body having a cable head part; the bolt head part is provided with a first thread; the cable head part is provided with a second thread engaged with the first thread; a near end of the bolt head part is equipped with a first baffle part; a far end of the cable head part is provided with a second baffle part; the bolt head part and the cable head part are detachably connected via the first thread and the second thread; and when the first baffle part is abutted against the second baffle part, the first thread and the second stop engaging. Intervention medical apparatus safety can be enhanced; and the intervention medical instrument can be normally released.
Description
Technical field
The present invention relates to insertion type medical instruments field, particularly relate to and be a kind ofly placed into the interventional medical device that human body selectes position, this interventional medical device is delivered to the conveying cable body at this selected position, and comprises the intervention medical treatment device of this interventional medical device and conveying cable body.
Background technology
Interventional therapy refers under the guiding of certain medical imaging device, carries material, medical apparatus and instruments and medicine to carry out a kind of means to disease treatment to this not mode of operating on of therapentic part by conduit.Current interventional therapy has become one of three large Modern medical therapy means mutually arranged side by side with traditional internal medicine treatment, surgical operation therapy.Heart and vascular disorder are the most widely used fields of interventional therapy.
Compared with traditional internal medicine treatment, interventional therapy reaches the inaccessiable clinical effectiveness of Drug therapy in the past, has replace operating trend in some situation.Such as, radiofrequency ablation therapy paroxysmal supraventricular tachycardia, atrial fibrillation, atrial flutter, various premature beat, room speed; Shutoff equipment treatment congenital heart disease ductus arteriosus is not busy, II hole central type atrial septal defect, the diseases such as balloon angioplasty mitral stenosis and pulmonary stenosis, Stent Implantation coronary heart disease and various angiostenosiss etc., pacemaker treatment bradycardia, prevention sudden death, treatment heart failure etc., some disease can reach the effect of radical cure completely.Aforementioned diseases is no longer simple adopts traditional medicine and surgical operation therapy.Compared with surgical operation, the outstanding advantages that interventional therapy has is: (1) wound is little, misery is few.Owing to not operating on, the conduit of performing the operation by means of only 2 ~ 3 millimeters of thicknesses completes, and therefore wound is very little.(2) recover fast.Little just because of wound, so patient's post-operative recovery is very fast, within after the operation in patients of usual cardiovascular diseases's interventional therapy 24 hours, get final product out-of-bed activity, daily life can take care of oneself completely.(3) good effect, safety.Because interventional therapy is not operated on, without general anesthesia, do not have the processes such as the healing of wound, therefore avoid in surgical operation, many complication that Post operation often runs into, safety improves greatly.(4) meet modern and require hope attractive in appearance.Because operation is not operated on, do not leave over wound scar after treatment, therefore can't see in appearance at PTCA or and STENTS at all.This point is especially applicable to child, women and requires higher industry practitioner to outward appearance, appearance.
Visible, utilize percutaneous interventional technique to carry out the suitable application area of disease treatment more and more extensively, usually adopt the Therapeutic Method of intubation intervention, various material, apparatus and medicine heart, artery and vein vascular to human body can be placed.Such as, can by insertion type treatment by valve repair apparatus, heart defect amplatzer, vascular plug, vascular filter etc. are placed into select location place.And by adopting thread mechanism to realize insertion type medical apparatus and instruments and carrying the connection between cable body in common insertion type treatment, but this mode of prior art is when actual clinical uses, and but there is following technical problem:
Connection tension in insertion type operation process between medical apparatus and instruments and conveying cable end of body, is difficult to normal release, and then the risk extending operating time, increase medical danger coefficient, improve insertion type treatment; In addition, there is thread failure problem in being threaded in insertion type operation process between medical apparatus and instruments and conveying cable end of body, cause insertion type medical apparatus and instruments to be correctly in place, equally also extend operating time, increase medical danger coefficient, improve insertion type treatment risk.
Summary of the invention
Based on this, be necessary for medical apparatus and instruments in prior art and the connectivity problem between conveying cable end of body, provide a kind of insertion type treatment to get involved medical treatment device, insertion type medical apparatus and instruments and insertion type medical apparatus and instruments conveying cable body.
The invention provides a kind of intervention medical treatment device, it comprises the apparatus being provided with bolt head and the conveying cable body comprising cable end portion, described bolt head is provided with the first screw thread, described in pull head and be provided with for the second screw thread with the first threaded engagement, the near-end of described bolt head is provided with the first stopper section; The far-end in described cable end portion is provided with the second stopper section; Removably connecting by described first screw thread and the second screw thread between described bolt head and cable end portion, when described first stopper section and described second stopper section inconsistent time, described first screw thread and the second screw thread stop occlusion.
Removably connecting by described first screw thread and the second screw thread between described bolt head and cable end portion, when the second stopper section on first stopper section and described cable end portion of described bolt head is inconsistent, described first screw thread and the second screw thread stop occlusion.
Wherein in an embodiment, described bolt head is provided with the bolt head endoporus of proximal face and the far-end end face running through bolt head, the inwall of described bolt head near-end is arranged female thread as described first screw thread; The outer surface in described cable end portion arranges external screw thread as described second screw thread.
Wherein in an embodiment, described first stopper section is the projection of the proximal face protruding described bolt head, and described second stopper section is the projection of the far-end end face protruding described cable end portion.
Wherein in an embodiment, on the proximal face that described bolt head is located in described first stopper section or proximal lateral wall, on the far-end end face that described cable end portion is located in described second stopper section or distal exterior wall.
Wherein in an embodiment, described first stopper section and/or described second stopper section have wedge angle, and described wedge angle angle is less than screw thread precession angle when described first screw thread and the second screw thread are engaged.
Wherein in an embodiment, described first stopper section protrudes from the effective length sum that the effective length of the proximal face of described bolt head and described second stopper section protrude from described cable end portion far-end end face, is less than or equal to the described second screw thread threadingly total length of axis direction and the difference of the threadingly effective length of axis direction when the second screw thread coordinates with the first threaded engagement.
Wherein in an embodiment, the effective length in described first stopper section and described second stopper section with less effective length person is more than or equal to described first thread pitch.
Wherein in an embodiment, one of them stopper section in described first stopper section and described second stopper section is the projection arranged in the proximal face of described bolt head or the far-end end face in cable end portion, the stop wall that another stopper section in both produces for the step place being extended to screw tip at described second screw thread or described first screw thread, described projection and described stop wall with the use of, when described projection and described stop wall inconsistent time, described first screw thread and the second screw thread stop occlusion.
Wherein in an embodiment, quantity and the described second stopper section quantity of described first stopper section are multiple and identical, multiple first stopper section and multiple second stopper section being circumferentially uniformly distributed respectively in bolt head and cable end portion.
Wherein in an embodiment, described first stopper section and described second stopper section have a vertical wall respectively, when the second stopper section on first stopper section and described cable end portion of described bolt head is inconsistent, the vertical wall of described first stopper section and described second stopper section contacts.
Present invention also offers a kind of insertion type medical apparatus and instruments, it comprises the bolt head being positioned at its near-end, and described bolt head is provided with screw thread, it is characterized in that, described bolt head is provided with the first stopper section, and described first stopper section is the projection of the proximal face protruding described bolt head.Wherein in an embodiment, described bolt head is provided with the bolt head endoporus of the proximal face running through bolt head, and described screw thread is located on the inwall of described bolt head near-end.
Wherein in an embodiment, the screw thread of described bolt head is be arranged on the external screw thread on the stud in described bolt head proximal face, and the more described externally threaded near-end of near-end of described projection is near the proximal face of described bolt head.
Present invention also offers a kind of conveying cable body of insertion type medical apparatus and instruments, it comprises establishing threadedly pulls head, it is characterized in that, described in pull head and be provided with the second stopper section, described second stopper section is the projection of the far-end end face protruding described cable end portion.
Wherein in an embodiment, described screw thread is located at the inwall of the far-end in described cable end portion.
Wherein in an embodiment, the far-end end face in described cable end portion has there is externally threaded stud, the far-end end face of the more described externally threaded far-end of described protruding far-end near described cable end portion.
The present invention compared with the prior art, have the following advantages: when the second stopper section on first stopper section and described cable end portion of described bolt head is inconsistent, described first screw thread and the second screw thread stop occlusion, on the one hand, effectively can prevent from being engaged tension between bolt head with cable end portion, and then ensure the normal release of apparatus in operation process; On the other hand, that can protect the thread of the first screw thread and the second screw thread can not damage inactivation, namely protects thread not produce stripped thread phenomenon.Thus the hidden danger that can effectively suppress the conventional threads mechanism between medical apparatus and instruments and conveying cable end of body to bring, ensure the normal release of medical apparatus and instruments, reduce medical-risk.
Accompanying drawing explanation
Fig. 1 is display effect schematic diagram in one embodiment of the invention;
Fig. 2 is the structural representation getting involved medical treatment device in one of them embodiment of the present invention between medical apparatus and instruments and conveying cable end of body;
Fig. 3 a is the structural representation of bolt head in Fig. 2;
Fig. 3 b is the structural representation in cable end portion in Fig. 2;
Fig. 4 is the structural representation getting involved medical treatment device in one of them embodiment of the present invention between stopper and conveying cable end of body;
Fig. 5 a is the structural representation getting involved medical treatment device in one of them embodiment of the present invention between medical apparatus and instruments and conveying cable end of body;
Fig. 5 b is the structural representation of bolt head in Fig. 5 a;
Fig. 5 c is the structural representation in cable end portion in Fig. 5 a;
Fig. 6 a is the structural representation getting involved medical treatment device in one of them embodiment of the present invention between medical apparatus and instruments and conveying cable end of body;
Fig. 6 b is the structural representation of bolt head in Fig. 6 a;
Fig. 6 c is the structural representation in cable end portion in Fig. 6 a;
Fig. 7 a is the structural representation getting involved medical treatment device in one of them embodiment of the present invention between medical apparatus and instruments and conveying cable end of body;
Fig. 7 b is the structural representation of bolt head in Fig. 7 a;
Fig. 8 is the structural representation getting involved bolt head in medical treatment device in one of them embodiment of the present invention between medical apparatus and instruments and conveying cable end of body;
Fig. 9 is the structural representation getting involved medical treatment device in one of them embodiment of the present invention between medical apparatus and instruments and conveying cable end of body;
Figure 10 is the structural representation getting involved medical treatment device in one of them embodiment of the present invention between medical apparatus and instruments and conveying cable end of body;
The structural representation of medical treatment device is got involved between medical apparatus and instruments and conveying cable end of body in one of them embodiment of Figure 11 the present invention.
Detailed description of the invention
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail the specific embodiment of the present invention below in conjunction with accompanying drawing.Set forth a lot of detail in the following description so that fully understand the present invention.But the present invention can be much different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar improvement when intension of the present invention, therefore the present invention is by the restriction of following public concrete enforcement.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.In intervention field, usually one end near for relative operator is called near-end, relative operator one end far away is called far-end.
Also it should be noted that, the bolt head that the insertion type medical apparatus and instruments in present embodiment comprises medical apparatus and instruments main part and is connected with described medical apparatus and instruments main part.Described medical apparatus and instruments main part be insertion type medical apparatus and instruments for realizing the part of medical functions, bolt head is insertion type medical apparatus and instruments for the part be connected with conveying cable body.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present invention understand usually.The object of term used in the description of the invention herein just in order to describe specific embodiment, is not intended to be restriction the present invention.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Implementation of the present invention is for insertion type armarium, and as shown in Figure 1, this armarium at least comprises insertion type medical treatment device 10.Insertion type medical treatment device 10 comprises insertion type medical apparatus and instruments 110, for transferring the conveying cable body 200 of insertion type medical apparatus and instruments 110.Being connected between usual insertion type medical apparatus and instruments 110 and the far-end 210 of conveying cable body 200 is placed in conduit 201, migration in the Tissue cavities 101 of patient, until discharge insertion type medical apparatus and instruments 110 by conveying cable body 200 after being positioned at select location, and insertion type medical apparatus and instruments 110 is placed into the treatment of select location enforcement insertion type.Tissue cavities 101 can be the cavity that tissue wall 102 is formed, such as, Tissue cavities 101 comprises lumen of vessels, enteric cavity, heart chamber, certain Tissue cavities 101 can also comprise current insertion type and treat the tissue that can arrive each organization internal chamber interior, and following insertion type treats the tissue that can arrive any one organization internal chamber interior.The insertion type medical apparatus and instruments 110 mentioned herein can comprise the medical apparatus and instruments of any one insertion type treatment, such as, and heart defect amplatzer, valve repair apparatus, vascular plug, vascular filter etc. medical apparatus and instruments.The slender body that conveying cable body 200 is insertion type treatment, such as wirerope, conduit etc., its far-end is used for being connected with insertion type medical apparatus and instruments 110.Here far-end refers to distance operator one end farthest in Fig. 1, and opposite proximal end refers to one end that distance operation is nearest.
Certainly, can understand insertion type medical apparatus and instruments 110 clearly for the ease of medical personnel and whether be shifted into select location, then above-mentioned armarium can also comprise: camera head, display etc.Camera head is inserted in conduit 201, follow the video data of the far-end shooting Tissue cavities 101 of conduit 201, then this video data transmission is on display, and interface 103 shows corresponding image, thus is supplied to medical personnel's insertion type and treats accurate locator data.
Be difficult to be discharged into correct select location, increase the problems such as medical danger coefficient in order to the insertion type medical apparatus and instruments 110 caused because of the connectivity problem between insertion type medical apparatus and instruments 110 and conveying cable body 200 can be avoided, in embodiments of the invention, insertion type medical treatment device 10 is improved.Described in concrete improvement vide infra by reference to the accompanying drawings.
Embodiment one provides a kind of insertion type treatment and gets involved medical treatment device 10.
See also Fig. 1, Fig. 2, Fig. 3 a and Fig. 3 b, this intervention medical treatment device 10 comprises insertion type medical apparatus and instruments 110 and conveying cable body 200.Apparatus 110 comprises the bolt head 120 be positioned on insertion type medical apparatus and instruments 110.Conveying cable body 200 comprises the cable end portion 220 be positioned on conveying cable body 200.Conveying cable body 200 is for transferring insertion type medical apparatus and instruments 110 to select location, and cable end portion 220 is arranged on the far-end 210 of conveying cable body 200.Bolt head 120 comprises the first screw thread 122 and the first stopper section 121a; Cable end portion 220 comprises second screw thread 222 and the second stopper section 221a that can be connected with the first screw thread 122; Removably connecting by the first screw thread 122 and the second screw thread 222 between bolt head 120 and cable end portion 220.When the second stopper section 221a on the first stopper section 121a and cable end portion 220 of bolt head 120 is inconsistent, first screw thread 122 and the second screw thread 222 stop occlusion, thus before the first screw thread 122 and the second screw thread 222 excessive screwing, just stop the continuation occlusion of the first screw thread 122 and the second screw thread 222, on the one hand, can make does not stress between the end face 123 of bolt head 120 and the end face 223 in cable end portion 220 fit or tool at regular intervals, namely make not produce pressure between the end face 123 of bolt head 120 and the end face 223 in cable end portion 220, also frictional force would not be produced between bolt head 120 end face 123 and the end face 223 in cable end portion 220, and then can normally discharge between bolt head 120 and cable end portion 220 in guarantee operation process, on the other hand, damage inactivation (stripped thread) problem when excessive the caused thread of thread pressure when screwing of the first screw thread 122 and the second screw thread 222 can be avoided.
In embodiment one shown in Fig. 2, in the proximal face 123 of bolt head 120 and the far-end end face 223 in cable end portion 222, correspondence arranges the projection of square structure respectively, in order to form the first stopper section 121a and the second stopper section 221a.That is, the proximal face 123 of bolt head 120 arranges the first stopper section 121a, the far-end end face 223 in cable end portion 222 arranges the second stopper section 221a.As shown in Fig. 2, Fig. 3 a and Fig. 3 b, the first stopper section 121a and the second stopper section 221a is raised in the surface of the proximal face 123 of bolt head 120 and the far-end end face 223 in cable end portion 222 respectively, and both corresponding settings.In the present embodiment by bolt head and the first stopper section one-body molded, by cable end portion and the second stopper section one-body molded, thus reduce cost of manufacture, the surface making insertion type medical apparatus and instruments is more level and smooth, avoids sharply giving prominence to foreign body to organizing the rejection reflection caused.Certainly, the connected mode between bolt head and the first stopper section or the connected mode between cable end portion and the second stopper section can also adopt the mode of laser weld or resistance pressure-welding to realize.
Be appreciated that, although in embodiment one, the projection of the square structure that what projection that the proximal face of bolt head or the far-end end face in cable end portion are arranged adopted is in Fig. 2, but, protruding structure can also be triangular structure, cylindrical structural, conical structure etc., sets as required.
Bolt head 120 is provided with the bolt head endoporus 124 of proximal face and the far-end end face running through bolt head.In other embodiments of the present invention, this bolt head endoporus 124 can only through proximal face.The near-end of the main part of insertion type medical apparatus and instruments 110 is connected to bolt head endoporus 124.Preferably, in the present embodiment, the female thread that the inwall of bolt head 120 near-end is arranged is as the first screw thread 122; The far-end 210 of conveying cable body 200 arranges cable end portion 220, and the external screw thread that the stud outer surface on cable end portion 220 far-end end face 223 is arranged is as the second screw thread 222.Here the first screw thread 122 can be positioned at the portion on bolt head 120 inwall.Be understandable that, when the external screw thread that stud outer surface on cable end portion 220 far-end end face 223 is arranged is as the second screw thread 222, the far-end of the second stopper section 221a is compared with the far-end end face 223 of far-end near cable end portion 220 of the second screw thread 222.Be understandable that, above-mentioned first screw thread 122 and the second screw thread 222 are that corresponding matching uses, and also correspondence can be set to external screw thread and female thread respectively, and equally, when the set-up mode of screw thread changes, the structure in bolt head and cable end portion is also corresponding changes.Be understandable that, when the first screw thread is when being arranged on the external screw thread on the stud of bolt head proximal face, the near-end of the first stopper section need compared with the near-end of the first screw thread near bolt head 120 proximal face.
Bolt head 120 shown in Fig. 2 distally comprises big column portion 131 and round platform portion 132 successively to near-end.Round platform portion 132 distally reduces successively to proximal outer diameter.The proximal face in round platform portion 132 is above-mentioned proximal face 123.Be understandable that, bolt head and cable end portion can also be the structure of other shapes, and such as cross section is square structure etc.Be understandable that, based on the structure of above-described embodiment one, in a variant embodiment of the present invention, the proximal end of bolt head and the distal end in cable end portion all adopt cylindrical structure, and external diameter is identical, in smoothing junction to ensure between insertion type Medical Instruments and conveying cable body.
Based on the structure of above-described embodiment one, in a variant embodiment of the present invention, in order to ensure that the continuation more effectively limiting screw thread deeply rotates, the effective length sum of the first stopper section 121a and the second stopper section 221a, be less than or equal to the second screw thread 222 threadingly axis direction total length with the second screw thread 222 is engaged with the first screw thread 122 coordinate time the threadingly minimum effective length of axis direction difference.Wherein, as shown in Figure 3 a, the effective length of the first stopper section 121a refers to the vertical dimension L1 between the proximal face of the first stopper section 121a and the proximal face 123 of bolt head 120; As shown in Figure 3 b, the effective length of the second stopper section 221a refers to the vertical dimension L2 between the far-end end face of the second stopper section 221a and the far-end end face 223 in cable end portion 220; The total length L as depicted on figure 3b of the second screw thread 222 threadingly axis direction is the vertical dimension of far-end end face to the far-end end face 223 in cable end portion 220 of the second screw thread 222; Shown in Fig. 3 a, Fig. 3 b, second screw thread 222 is engaged the minimum effective length b of threadingly axis direction when coordinating with the first screw thread 122, refer to the first screw thread 122 (i.e. the female thread of bolt head 120) and the second screw thread 222 (i.e. the external screw thread in cable end portion 220) that cooperatively interact, the threadingly contact length of fit that spins together of axis direction, under this contact length of fit, bolt head is together with the lucky compact siro spinning technology in cable end portion.Therefore, as (L1+L2)≤(L-b), the continuation that more effectively can limit screw thread deeply rotates.Be understandable that, the effective length of the first stopper section 121a and the second stopper section 221a, can also be applicable in other embodiments with the relativeness of the first screw thread and the second screw thread.
Certainly, for ensureing the first stopper section 121a of bolt head and the second stopper section 221a in cable end portion not the far-end end face 123 of contact bolt head 120 and far-end end face 223 in cable end portion 220 while rotation, in the above-described embodiments, the effective length in the first stopper section 121a and the second stopper section 221a with less effective length person is more than or equal to the pitch P of the first screw thread 122 or the second screw thread 222.Because the first screw thread 122 and the second screw thread 222 are matching threads, therefore both pitch P are consistent.That is, when L1 is less than or equal to L2, L1 is greater than or equal to P; When L1 is greater than L2, L2 is greater than or equal to P.Be understandable that, the relativeness of the first stopper section 121a and the second stopper section 221a and the first screw thread 122 and the second screw thread 222 can also be applicable in other embodiments.
See also Fig. 4, insertion type medical apparatus and instruments 110 is heart defect amplatzer, and its armful comprises for the medical apparatus and instruments main part 301 of shutoff heart defect and by main part 301 and the bolt head 302 carrying cable body 200 to be connected.。
Insertion type medical apparatus and instruments 110 is fed through select location by conveying cable body 200 far-end with the place, cable end portion 200 of the second screw thread and the second stopper section by insertion type medical apparatus and instruments 110.If bolt head and cable end portion are when lacking the first stopper section and the second stopper section, when it screws, the contact interface of the thread contact surface of internal and external threads and the end in bolt head and cable end portion can produce pressure, pressure causes the frictional force of contact interface to raise, and then affect the normal release of apparatus in operation process, thus need to extend operating time, increase operation risk coefficient.Meanwhile, if bolt head and cable end portion are when lacking the first stopper section and the second stopper section, the excessive damage inactivation that also can cause thread of pressure when the thread of internal and external threads is in excessive screwing, i.e. stripped thread.And in embodiments of the invention, be added with the first stopper section and the second stopper section respectively in the end in bolt head and cable end portion for limiting the rotation of screw thread, thus the generation of the problems referred to above can be avoided.
Hereinafter by the vibrational power flow mode of all the other structure members that illustrates except the set-up mode of the first screw thread and the second screw thread and interconnected relationship, for avoiding the elaboration of too much duplicate contents, each embodiment is mainly based on bolt head and the cable end portion of structure shown in Fig. 2 below, certainly, the deformation behaviour of all the other structure members except the set-up mode of the first screw thread and the second screw thread is suitable for the first screw thread and the second screw thread equally and is respectively in the specific embodiment that outer female thread exchanges.
Embodiment two, see Fig. 5 a, Fig. 5 b and Fig. 5 c, the intervention medical treatment device 10b that the present embodiment provides is identical substantially with intervention medical treatment device 10, difference is, the shape of the first stopper section 121b and the second stopper section 221b and setting position are all different from shape and the setting position of the first stopper section 121a and the second stopper section 221a, and, the structure of the different bolt head 120 of structure of bolt head 120b.Particularly, on the proximal lateral wall 125b of bolt head 120b and on the distal exterior wall 224b of cable end portion 220b, corresponding setting protrudes from the projection of the proximal face 123b of bolt head 120b and the far-end end face 223b of cable end portion 220b respectively, in order to form the first stopper section 121b and the second stopper section 221b.In present embodiment, the first stopper section 121b and the second stopper section 221b can be one-body molded with bolt head 120b and cable end portion 222b respectively.Be understandable that, the mode of laser weld or resistance pressure-welding also can be adopted to be separately fixed on bolt head 120b and cable end portion 222b by the first stopper section 121b and the second stopper section 221b.Certainly, in the present embodiment, the first stopper section 121b and the second stopper section 221b can be avoided to come in contact with the far-end end face 223b in cable end portion and the proximal face 123b on bolt head respectively, stop the end face generation pressure effect between insertion type medical apparatus and instruments and conveying cable body, extend the service life of insertion type medical apparatus and instruments.
In addition, bolt head 120b distally comprises big column portion 126b, round platform portion 127b and small column portion 128b successively to near-end, and the external diameter of small column portion 128b is identical with the external diameter of cable end portion 220b, in smoothing junction to ensure between insertion type Medical Instruments and conveying cable body.
In above-described embodiment two, the projection that the end face lateral wall in bolt head or cable end portion is arranged can be the projection of the pointed shape structure adopted in Fig. 5 a.Certainly the projection arranged on the end face lateral wall in bolt head or cable end portion can also adopt other shapes, such as square structure, cylindrical structural etc.
In embodiment two as shown in Fig. 5 a, Fig. 5 b and Fig. 5 c, the first stopper section 121b and the second stopper section 221b has wedge angle, and wedge angle angle is less than screw thread precession angle when the first screw thread 122b and the second screw thread 222b is engaged.Screw thread precession angle mentioned in this article is exactly the helical of the second screw thread 222b of conveying cable body 200 and the second screw thread 222b angle perpendicular to the cross section of its axis.In the present embodiment, the wedge angle angle of the first stopper section and/or the second stopper section is made to be less than screw thread precession angle when the first screw thread and the second screw thread are engaged, being cause axial compressive force to form frictional resistance to prevent the face of the first stopper section and the second stopper section generation axis from contacting, avoiding frictional resistance and causing medical apparatus and instruments normally to discharge.Certainly, in order to reach this purpose, and the condition of " being less than screw thread precession angle when the first screw thread and the second screw thread are engaged " to the wedge angle angle initialization of the first stopper section and/or the second stopper section, go for equally in other embodiments.
In addition, in order to ensure that the continuation more effectively limiting screw thread deeply rotates, the effective length sum of the first stopper section 121b and the second stopper section 221b, be less than or equal to the second screw thread 222b threadingly axis direction total length, with the second screw thread 222b is engaged with the first screw thread 122b coordinate time the threadingly minimum effective length of axis direction difference.Concrete understanding can see embodiment one above.
Also such as, for ensureing the first stopper section 121b of bolt head and the second stopper section 221b in cable end portion not far-end end face 123b of contact bolt head and the far-end end face 223b in cable end portion while rotation, in the above-described embodiments, the effective length that the first stopper section 121b and the second stopper section 221b has less effective length person is between the two more than or equal to the pitch P of the first screw thread 122b or the second screw thread 222b.Concrete understanding can see the description of embodiment one above.
Embodiment three, see Fig. 6 a, Fig. 6 b and Fig. 6 c, with embodiment one and variant embodiment thereof unlike, in the embodiment of the intervention medical treatment device 10c shown in Fig. 6 a, Fig. 6 b and Fig. 6 c, on the proximal face 123c of bolt head 120c and the far-end end face 223c of cable end portion 220c, correspondence arranges the first stopper section 121c and the second stopper section 221c, first stopper section 121c and the second stopper section 221c has wedge angle, and wedge angle angle is less than screw thread precession angle when the first screw thread 122c and the second screw thread 222c is engaged.The second screw thread 222c is offered in 220c lateral wall, cable end portion as shown in Figure 6 b, the far-end end face 223c of cable end portion 220c is arranged the angular projection of tool as the second stopper section 221c, the wedge angle angle 9 of this projection is less than screw thread precession angle when the first screw thread 122c and the second screw thread 222c is engaged.As fig. 6 c, bolt head 120c near-end medial wall is offered the first screw thread 122c, the far-end end face 123c of bolt head 120c is arranged the angular projection of tool as the first stopper section 121c, the wedge angle angle 11 of this projection is less than screw thread precession angle when the first screw thread and the second screw thread are engaged.The definition of the screw thread precession angle that present embodiment is mentioned is identical with the definition of the screw thread precession angle in above-mentioned embodiment.
First stopper section 121c and the second stopper section 221c cooperatively interact prevention first screw thread and the second screw thread excessive occlusal time, can adopt the angular bulge-structure of the tool as shown in Fig. 6 b and Fig. 6 c, and now wedge angle angle satisfies condition: wedge angle angle is less than screw thread precession angle when the first screw thread and the second screw thread are engaged simultaneously.In the present embodiment, the wedge angle angle of the first stopper section and/or the second stopper section is made to be less than screw thread precession angle when the first screw thread and the second screw thread are engaged, being cause axial compressive force to form frictional resistance to prevent the face of the first stopper section and the second stopper section generation axis from contacting, avoiding frictional resistance and causing medical apparatus and instruments normally to discharge.Certainly, in order to reach this purpose, and the condition of " being less than screw thread precession angle when the first screw thread and the second screw thread are engaged " to the wedge angle angle initialization of the first stopper section and/or the second stopper section, go for other embodiments and related variation embodiment equally.
What the far-end in the above-mentioned near-end at bolt head and cable end portion was arranged can adopt identical structure in order to the structure forming the first stopper section and the second stopper section, also can adopt different structures.
When the first stopper section and the second stopper section adopt identical structure, such as, in Fig. 2, the first stopper section 121 and the second stopper section 221 all adopt the projection of square structure, and in such as Fig. 5 a, the first stopper section 121b and the second stopper section 221b all adopts the projection of pointed shape structure again.Also such as, in Fig. 6 a, the first stopper section 121c and the second stopper section 221c also all adopts the projection of pointed shape structure.That is, no matter the first stopper section and the second stopper section are separately positioned on the proximal face of bolt head and the far-end end face in cable end portion, still be separately positioned on the proximal, side wall of bolt head and the distal side wall in cable end portion, the first stopper section and the second stopper section all can adopt identical planform.
Certainly, the first stopper section also can adopt not identical structure with the second stopper section, such as, as Fig. 7 a and Fig. 7 b the embodiment four that provides.
See the embodiment four shown in Fig. 7 a and Fig. 7 b, get involved the medical treatment device 10d bolt head 120d be positioned on insertion type medical apparatus and instruments and comprise the first screw thread and the first stopper section 121d, its structure and annexation identical with embodiment one.The cable end portion 220d be positioned on conveying cable body comprises the second screw thread 222d and the second stopper section that can be connected with the first threaded engagement.The proximal face 123d of bolt head 120d is arranged and convexes to form the first stopper section 121d, and the stop wall 226d that the step place that the second screw thread is extended to screw tip on the far-end of cable end portion 220d produces is as the second stopper section.When the first stopper section 121d and stop wall 226d is inconsistent, the first screw thread and the second screw thread 222d stop occlusion.The effect of the stop wall adopted in the present embodiment is equal to the second stopper section of the various shapes in Fig. 2, Fig. 5 a, conveying cable body far-end can be avoided to have outthrust, simplify structure and improve Mechanical Reliability.
In like manner, the variant embodiment of embodiment four can be, as shown in Figure 8, the projection in embodiment four and stop wall is inverted.Be specially: the first stopper section that bolt head 120e comprises the first screw thread 122e and is made up of stop wall 135e, be positioned at the second stopper section of conveying cable body then accordingly for protruding.The stop wall 135e that the step place that first screw thread 122e is extended to screw tip on the near-end of bolt head 120e produces is as the first stopper section.When the second stopper section and stop wall 135e inconsistent time, the first screw thread and the second screw thread stop occlusion.And in the present embodiment, the projection that the far-end end face in cable end portion is arranged can be the projection of the square structure adopted in Fig. 2, projection of Fig. 5 a pointed shape structure etc. also can be adopted.
Visible, in embodiment four and variant embodiment thereof, one of them stopper section in first stopper section and the second stopper section is the projection arranged in the proximal face of bolt head or the far-end end face in cable end portion, the stop wall that another stopper section in first stopper section and the second stopper section produces for the step place being extended to screw tip at the second screw thread or the first screw thread, protruding with stop wall with the use of, when projection and stop wall are inconsistent, the first screw thread and the second screw thread stop occlusion.In the present embodiment, the projection for the formation of the first stopper section or the second stopper section can adopt the angular projection of the tool in Fig. 6 b, coordinates, prevent the first screw thread and the second screw thread excessive occlusal with the stop wall 135e shown in Fig. 8; Or the angular bulge-structure of the tool in Fig. 6 c can also be adopted to coordinate with the stop wall 135d shown in Fig. 7 b, prevent the first screw thread and the second screw thread is excessively stung.Under these two kinds of modes, in the angular projection of tool, no matter this projection is used as the first stopper section or the second stopper section, then wedge angle angle all can by meeting condition shown in above-described embodiment three " wedge angle angle is less than screw thread precession angle when the first screw thread and the second screw thread are engaged ", prevent from the first stopper section and the second stopper section from producing axial face contact and cause axial compressive force to form frictional resistance, avoid frictional resistance and cause medical apparatus and instruments normally to discharge.
Based on the embodiment shown in Fig. 7 a and Fig. 7 b, Fig. 8, in another embodiment of the invention, above-mentioned stop wall (226d, 135e) is formed when cutted thread.For easy to process, helicoid when retaining cutted thread forms step, is formed in the stop wall that the near-end of above-mentioned bolt head or the far-end in cable end portion are formed by step.In addition, stop wall 135e and stop wall 226d can be vertical wall, stressed in order to disperse during corresponding stopper section contact.
Based in above-described embodiment one to embodiment four, first stopper section and the second stopper section can have a vertical wall, when the second stopper section on first stopper section and cable end portion of bolt head is inconsistent, the vertical wall of the first stopper section and the second stopper section contacts, to ensure make contact surface uniform force when the first stopper section and the second stopper section contact with each other.Therefore, such as, in the embodiment shown in Fig. 5 a, Fig. 5 b, Fig. 5 c, Fig. 6 a, Fig. 6 b, Fig. 6 c, Fig. 7 a, Fig. 7 b, the first stopper section or the second stopper section can adopt triangular structure of right angle, ladder structure of right angle etc.
Certainly, above-mentioned first stopper section and the second stopper section quantity can correspondingly be arranged, and quantity is multiple, multiple first stopper section and multiple second stopper section being circumferentially uniformly distributed respectively in bolt head and cable end portion.
Embodiment five as shown in Figure 9, is with the difference of embodiment one, and the bolt head 120f getting involved medical treatment device 10f comprises multiple first stopper section 121f.The cable end portion 220f be positioned on conveying cable body 200f comprises multiple second stopper section 221f.Multiple first stopper section 121f is along the circumferential direction evenly arranged on the proximal face 123f of bolt head 120f, multiple second stopper section 221f is along the circumferential direction evenly arranged on the far-end end face 223f of cable end portion 220f, and the quantity of the first stopper section 121e is identical with the quantity of the second stopper section 221e.First stopper section 121f and the second stopper section 221f can also adopt identical structure.Certainly, the scheme arranging multiple first stopper section and the second stopper section in the present embodiment can also be applicable in above-described embodiment one to embodiment four and related variation embodiment.
Such as, embodiment six is as shown in Figure 10 with the difference of embodiment two, the proximal lateral wall 125m of bolt head 120m getting involved medical treatment device 10m is along the circumferential direction evenly provided with and multiplely convexes to form multiple first stopper section 121m, the distal exterior wall 224m of cable end portion 220m is along the circumferential direction evenly provided with and multiplely convexes to form multiple second stopper section 221m.The quantity of the first stopper section 121m is identical with the quantity of the second stopper section 221m.First stopper section 121m and the second stopper section 221m can also adopt identical structure.All the other structures are identical with above-described embodiment two and variant embodiment thereof.
In embodiment shown in Fig. 9 to Figure 10, by increasing the number of the first stopper section and the second stopper section, the first stopper section is equal with the second stopper section quantity simultaneously, and is evenly distributed on circumferencial direction.When screw thread rotation, barrier force is just decomposed on each block piece like this, significantly reduces the mechanical damage of barrier force to block piece, even if indivedual block piece lost efficacy also can ensure the reliability of whole mechanism.Namely not only increase the mechanical strength of blocking mechanism, also improve the reliability of blocking mechanism.
Also such as, embodiment seven is as shown in figure 11 with the difference of embodiment four, and the bolt head 120n getting involved medical treatment device 10n comprises multiple the first stopper section 121n along the circumferential direction evenly arranged on the proximal face 123n of bolt head 120n.Correspondingly, on cable end portion 220m, correspondence arranges stop wall 226n.Be appreciated that stop wall 226n can be one, may also be multiple, or identical with the number of the first stopper section 121n.
The present invention compared with the prior art, have the following advantages: when the second stopper section on first stopper section and described cable end portion of described bolt head is inconsistent, described first screw thread and the second screw thread stop occlusion, on the one hand, effectively can prevent from being engaged tension between bolt head with cable end portion, and then ensure the normal release of apparatus in operation process; On the other hand, that can protect the thread of the first screw thread and the second screw thread can not damage inactivation, namely protects thread not produce stripped thread phenomenon.Thus the hidden danger that can effectively suppress the conventional threads mechanism between medical apparatus and instruments and conveying cable end of body to bring, ensure the normal release of medical apparatus and instruments, reduce medical-risk.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this description is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (16)
1. get involved medical treatment device for one kind, comprise the apparatus that is provided with bolt head and comprise the conveying cable body in cable end portion, described bolt head is provided with the first screw thread, described in pull head and be provided with for the second screw thread with the first threaded engagement, it is characterized in that, the near-end of described bolt head is provided with the first stopper section;
The far-end in described cable end portion is provided with the second stopper section; Removably connecting by described first screw thread and the second screw thread between described bolt head and cable end portion, when described first stopper section and described second stopper section inconsistent time, described first screw thread and the second screw thread stop occlusion.
2. intervention medical treatment device according to claim 1, is characterized in that, described bolt head is provided with the bolt head endoporus of the proximal face running through bolt head, and described first screw thread is located on the inwall of described bolt head near-end; Described second screw thread is located on the outer surface in described cable end portion.
3. intervention medical treatment device according to claim 1, is characterized in that, described first stopper section is the projection of the proximal face protruding described bolt head, and described second stopper section is the projection of the far-end end face protruding described cable end portion.
4. intervention medical treatment device according to claim 3, is characterized in that, on the proximal face that described bolt head is located in described first stopper section or proximal lateral wall, on the far-end end face that described cable end portion is located in described second stopper section or distal exterior wall.
5. intervention medical treatment device according to claim 3, is characterized in that, described first stopper section and/or described second stopper section have wedge angle, and described wedge angle angle is less than screw thread precession angle when described first screw thread and the second screw thread are engaged.
6. intervention medical treatment device according to claim 3, it is characterized in that, described first stopper section protrudes from the effective length sum that the effective length of the proximal face of described bolt head and described second stopper section protrude from described cable end portion far-end end face, is less than or equal to the described second screw thread threadingly total length of axis direction and the difference of the threadingly minimum effective length of axis direction when the second screw thread coordinates with the first threaded engagement.
7. intervention medical treatment device according to claim 3, is characterized in that, the effective length in described first stopper section and described second stopper section with less effective length person is more than or equal to described first thread pitch.
8. intervention medical treatment device according to claim 1, it is characterized in that, one of them stopper section in described first stopper section and described second stopper section is the projection arranged in the proximal face of described bolt head or the far-end end face in cable end portion, the stop wall that another stopper section in both produces for the step place being extended to screw tip at described second screw thread or described first screw thread, described projection and described stop wall with the use of, when described projection and described stop wall inconsistent time, described first screw thread and the second screw thread stop occlusion.
9. intervention medical treatment device according to claim 1, it is characterized in that, quantity and the described second stopper section quantity of described first stopper section are multiple and identical, multiple first stopper section and multiple second stopper section being circumferentially uniformly distributed respectively in described bolt head and cable end portion.
10. intervention medical treatment device according to claim 1, it is characterized in that, described first stopper section and described second stopper section have a vertical wall respectively, when the second stopper section on first stopper section and described cable end portion of described bolt head is inconsistent, the vertical wall of described first stopper section and described second stopper section contacts.
11. 1 kinds of interventional medical devices, comprise the bolt head being positioned at its near-end, and described bolt head is provided with screw thread, it is characterized in that, described bolt head is provided with the first stopper section, and described first stopper section is the projection of the proximal face protruding described bolt head.
12. interventional medical devices according to claim 11, is characterized in that, described bolt head is provided with the bolt head endoporus of the proximal face running through bolt head, and described screw thread is located on the inwall of described bolt head near-end.
13. insertion type medical apparatus and instruments according to claim 11, it is characterized in that, the screw thread of described bolt head is be arranged on the external screw thread on the stud in described bolt head proximal face, and the more described externally threaded near-end of near-end of described projection is near the proximal face of described bolt head.
The conveying cable body of 14. 1 kinds of interventional medical devices, comprises establishing and threadedly pulls head, it is characterized in that, described in pull head and be provided with the second stopper section, described second stopper section is the projection of the far-end end face protruding described cable end portion.
The conveying cable body of 15. interventional medical devices according to claim 14, is characterized in that, described screw thread is located at the inwall of the far-end in described cable end portion.
The conveying cable body of 16. insertion type medical apparatus and instruments according to claim 14, is characterized in that, the far-end end face in described cable end portion has and has externally threaded stud, the far-end end face of the more described externally threaded far-end of described protruding far-end near described cable end portion.
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| CN201510685051.7A CN105250033B (en) | 2015-10-20 | 2015-10-20 | Interventional medical device and its conveying cable body, intervention medical device |
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| CN201510685051.7A CN105250033B (en) | 2015-10-20 | 2015-10-20 | Interventional medical device and its conveying cable body, intervention medical device |
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| CN105250033A true CN105250033A (en) | 2016-01-20 |
| CN105250033B CN105250033B (en) | 2019-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112642044A (en) * | 2021-01-07 | 2021-04-13 | 上海翰凌医疗器械有限公司 | Dilating tube and vascular sheath |
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| CN103690202A (en) * | 2013-12-30 | 2014-04-02 | 先健科技(深圳)有限公司 | Implant conveying device and implantable medical device |
| CN205251706U (en) * | 2015-10-20 | 2016-05-25 | 先健科技(深圳)有限公司 | Intervene medical instrument and carry cable body, intervene medical devices thereof |
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| US20030204203A1 (en) * | 1999-11-08 | 2003-10-30 | Ev3 Sunnyvale, Inc., A California Corporation | Adjustable left atrial appendage implant |
| US20060122647A1 (en) * | 2004-09-24 | 2006-06-08 | Callaghan David J | Occluder device double securement system for delivery/recovery of such occluder device |
| WO2008109822A3 (en) * | 2007-03-07 | 2008-10-30 | Univ South Florida | Device for percutaneously creating a fetal iatrogenic gastroschisis |
| CN103690202A (en) * | 2013-12-30 | 2014-04-02 | 先健科技(深圳)有限公司 | Implant conveying device and implantable medical device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112642044A (en) * | 2021-01-07 | 2021-04-13 | 上海翰凌医疗器械有限公司 | Dilating tube and vascular sheath |
| CN112642044B (en) * | 2021-01-07 | 2023-08-25 | 上海翰凌医疗器械有限公司 | Dilating tube and vascular sheath |
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|---|---|
| CN105250033B (en) | 2019-04-02 |
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