CN102274575B - Balloon dilatation catheter - Google Patents

Balloon dilatation catheter Download PDF

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Publication number
CN102274575B
CN102274575B CN 201110132736 CN201110132736A CN102274575B CN 102274575 B CN102274575 B CN 102274575B CN 201110132736 CN201110132736 CN 201110132736 CN 201110132736 A CN201110132736 A CN 201110132736A CN 102274575 B CN102274575 B CN 102274575B
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Prior art keywords
push rod
sacculus
pipe
dilating catheter
sacculus dilating
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CN 201110132736
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Chinese (zh)
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CN102274575A (en
Inventor
刘亚杰
谢志永
赵振心
李孝秀
张滢涛
金巧蓉
罗七一
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Shanghai Hongmai Medical Technology Co ltd
Shanghai Minimally Invasive Heart Pulse Medical Technology Group Co ltd
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Shanghai Microport Medical Group Co Ltd
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Priority to CN 201110132736 priority Critical patent/CN102274575B/en
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Abstract

The invention provides a balloon dilatation catheter which comprises a push rod, an inner tube, a balloon and a connector, wherein the push rod is in a hollow structure, the far end of the push rod is fixed with the balloon, and the near end is fixed with the connector; the inner tube is in a hollow structure, and penetrates through the inner cavity of the push rod and the inner cavity of the balloon, and the far end of the inner tube is fixed with the balloon and penetrates out of the balloon; the connector is provided with a first port and a second port, the first port is communicated with the near end of the inner tube, and the second port is communicated with the space between the internal surface of the push rod and the external surface of the inner tube, and the space between the internal surface of the balloon and the external surface of the inner tube; the wall of the push rod is provided with a through hole, the inner tube is provided with a side tube, and the side tube is communicated with the through hole; a lining core is detachably arranged in the inner tube; and the far end of the lining core is positioned at the internal opening of the side tube. The balloon dilatation catheter provided by the invention can combine the coaxial push and dilatation structure with the quick-switching push and dilatation structure, thereby being capable of switching between the two structures when in use.

Description

A kind of sacculus dilating catheter
Technical field
The present invention relates to a kind of sacculus dilating catheter.
Background technology
Interventional medical device is emerging in recent years medical device technology, and it is reducing wound to patient, is improving and play important effect aspect the disease therapeuticing effect.For example, be applied in the various intraluminal insertion type sacculus dilating catheters of human body and can be used as carrier and carry all kinds of supports, as intravascular stent, biliary tract rack, esophageal stents appear, intestinal support, ductus pancreaticus support, urethra rack or trachea bracket etc.And this insertion type sacculus dilating catheter can also be treated the disease that bare bracket and drug stent can't be treated, and becomes and the treatment of bifurcated lesions branch process, in-stent restenosis etc. as small vessel disease.
At present, the sacculus dilating catheter system mainly contains two kinds of structures: coaxial-type propelling movement and expansion structure and quick switch type push and expansion structure.In coaxial-type propelling movement and expansion structure, guidewire lumen runs through whole conduit, in use, seal wire is penetrated by distal end of catheter and is passed by catheter proximal end, coaxial-type pushes and expansion structure has the stronger ability of passing through the vascular lesion position, but be to use inconvenience, usually need 3 meters long prolongation seal wire and often need 2-3 operator's ability complete operation.And in quick switch type propelling movement and expansion structure, guidewire lumen is shorter, guidewire lumen is about 20-40 centimetre from head end usually, and from pushing and the sidewall opening of expansion structure, in use, seal wire is penetrated by head end, passed by the opening on the sidewall, thereby only need 2 meters long seal wires, the single complete operation that gets final product, but its ability by the vascular lesion position is slightly poor, causes operative failure easily.
By the research to prior art, the applicant finds that if adopt coaxial-type to push and expansion structure merely, operation technique is loaded down with trivial details, and is consuming time longer; If adopt quick switch type to carry and expansion structure merely, though simple to operate, may reduce success rate of operation.Therefore, need badly a kind of can be with the function of two kinds of propelling movements and expansion structure and the sacculus dilating catheter that advantage combines.
Summary of the invention
Above-mentioned technical problem in view of prior art, the objective of the invention is to develop a kind of sacculus dilating catheter, this sacculus dilating catheter can be realized the coaxial-type propelling movement is combined with expansion structure with expansion structure and quick switch type propelling movement, thereby can switch between these two kinds of structures in use.
To achieve these goals, the invention provides a kind of sacculus dilating catheter, comprise push rod, interior pipe, sacculus and connecting device, wherein:
Described push rod is hollow structure, and the far-end of this push rod and described sacculus fix, and the near-end of this push rod and described connecting device fix;
Pipe is for hollow structure in described, and pipe is in the inner chamber of the inner chamber of described push rod and described sacculus in this, and far-end and described sacculus that should interior pipe fix and pass described sacculus;
Described connecting device has first interface and second interface, described first interface is connected with the near-end of described interior pipe, the inner surface of described second interface and described push rod and described in space between the outer surface of pipe and described sacculus inner surface and described in space between the outer surface of pipe be connected
It is characterized in that:
Be provided with through hole in the wall of described push rod, described in pipe be provided with side pipe, the described through hole in the wall of described side pipe and described push rod is connected; And be provided with the lining core in described in the pipe removably, the far-end of this lining core is positioned at the inside opening place of described side pipe.
Preferably, the distance of the far-end of the inside opening of described side pipe and described push rod is less than the distance of the far-end of the outside opening of described side pipe and described push rod.
Preferably, described through hole is 50 millimeters-500 millimeters from the distance of the far-end of described push rod.
Preferably, the far-end of described lining core is wedge structure, and the angle between the central axis of the angle of the inclined-plane of this wedge structure and the central axis of described lining core and the central axis of described side pipe and interior pipe equates.
Preferably, described push rod is medical macromolecular materials pipe or braided wires reinforced pipe; And/or, the material of described sacculus, described interior pipe and described side pipe is medical macromolecular materials; And/or, the material of described lining core is metal or medical macromolecular materials.
Preferably, described medical macromolecular materials comprise one or more in polyethers-amino block copolymer resin, nylon resin, polyimide resin, polyurethane, politef and the polyether-ether-ketone.
Preferably, described metal material is rustless steel, Nitinol or titanium alloy.
Preferably, described sacculus dilating catheter further comprises head end, and this head end is fixed on the far-end of described interior pipe.
Preferably, described sacculus dilating catheter further comprises the stress anemostat, and this stress anemostat is arranged between described push rod and the described connecting device or is coated on the connecting portion place of described push rod and described connecting device.
Preferably, described sacculus dilating catheter further comprises the development labelling, and described development labelling is embedded in or is enclosed within on the described interior pipe, and the position of described development labelling is relative with the position of described sacculus.
By above technical scheme of the present invention as seen, the invention provides a kind of sacculus dilating catheter, wherein, between push rod and interior pipe, be provided with side pipe.When using this sacculus dilating catheter, after seal wire was entered by the far-end of interior pipe, seal wire not only can be passed by the near-end of interior pipe, but also can be by passing in the side pipe.And when seal wire was passed by the near-end of interior pipe, seal wire was coaxial distribution with interior pipe, so just can be so that this sacculus dilating catheter has stronger ride-through capability; When seal wire passed in by side pipe, this sacculus dilating catheter had only a bit of being through on the seal wire, and resistance is less, thus can be so that this sacculus dilating catheter advances along seal wire rapidly.
Therefore, this sacculus dilating catheter provided by the invention not only has the advantage of coaxial-type propelling movement and expansion structure, and quick switch type pushes and the advantage of expansion structure but also have.And, sacculus dilating catheter provided by the invention can also be according to the practical situation needs, between coaxial-type propelling movement and expansion structure and quick switch type propelling movement and these two kinds of structures of expansion structure, switch rapidly, thereby can save operating time, can improve success rate of operation simultaneously.
Description of drawings
In order to be illustrated more clearly in the technical scheme of the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below.It is evident that the accompanying drawing in describing below only is the specific embodiment of putting down in writing among the application, it is not the restriction to protection scope of the present invention.For those of ordinary skills, under the prerequisite of not paying creative work, certainly can also be according to following embodiments of the present invention and accompanying drawing obtain some other embodiment and accompanying drawing.
The broken section structural representation of a kind of sacculus dilating catheter of providing according to a preferred embodiment of the present invention is provided Fig. 1.
Fig. 2 is the use sketch map according to the sacculus dilating catheter of the embodiment of Fig. 1.
The specific embodiment
In order to make those skilled in the art person understand technical scheme among the application better, below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment only is the application's part embodiment, rather than whole embodiment.Based on the described specific embodiment of the application, all other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work should drop within the design scope of the present invention.
Describe the preferred embodiments of the present invention in detail below with reference to accompanying drawing.
The broken section structural representation of a kind of sacculus dilating catheter of providing according to a preferred embodiment of the present invention is provided Fig. 1.In this accompanying drawing, far-end refers to left end, and near-end refers to right-hand member.
As shown in Figure 1, sacculus dilating catheter of the present invention comprises push rod 1, interior pipe 2, sacculus 3 and connecting device 4, and wherein: push rod 1 is hollow structure, and the far-end of push rod 1 and sacculus 3 fix, and the near-end of push rod 1 and connecting device 4 fix; In pipe 2 be hollow structure, interior pipe 2 in the inner chamber of sacculus 3 with the inner chamber of push rod 1 in, the far-end of interior pipe 2 passes the far-end of sacculus 3 and fixes with the far-end of sacculus 3; Connecting device 4 has the first interface 4-1 and the second interface 4-2, the first interface 4-1 of connecting device 4 is connected with the near-end of interior pipe 2, and the space between the outer surface of the space between the outer surface of the second interface 4-2 of connecting device 4 and the inner surface of sacculus 3 and interior pipe 2 and the inner surface of push rod 1 and interior pipe 2 is connected.
The wall of push rod 1 is provided with through hole 5.In the present invention, the position of through hole 5 preferably is arranged on the position apart from 50 millimeters-500 millimeters of the far-ends of push rod 1.Interior pipe 2 is provided with side pipe 6, and the through hole 5 in the wall of this side pipe 6 and push rod 1 is connected and is fixed together, and side pipe 6 is connected with through hole 5.Side pipe 6 is connected with the outside of push rod 1 by its outside opening by the intracavity inter-connection of its inside opening and interior pipe 2, thereby the inner chamber of pipe 2 can be connected with the outside of push rod 1 in can making by side pipe 6.In addition, the distance of the far-end of the inside opening of this side pipe 6 and push rod 1 is less than the distance of outside opening (being through hole 5) with the far-end of push rod 1 of this side pipe 6, that is the opening internally of side pipe 6 is to the bearing of trend of the outside opening near-end towards this sacculus dilating catheter.
This sacculus dilating catheter is provided with head end 9 at the far-end of interior pipe 2, in order to can pass part inaccessible in the blood vessel smoothly when operation.Head end 9 is obtained by grinding process by the far-end of the interior pipe 2 of the outside of sacculus 3, and head end 9 is a tip that the oblique angle of 360 degree circle distribution is arranged.This sacculus dilating catheter also comprises: stress anemostat 8, stress anemostat 8 are arranged between push rod 1 and the connecting device 4 or are coated on the connecting portion place of push rod 1 and connecting device 4.This sacculus dilating catheter also further comprises: on the pipe 2, the position of development labelling 7 was relative with the position of sacculus 3 in development labelling 7, development labelling 7 were embedded in or are enclosed within, and showed the position of sacculus 3 when being used for pushing.In the embodiment of the present application, development labelling 7 has two, manages on 2, in the position relative with the two ends of sacculus 3 in they are separately positioned on.
In addition, in the present invention, push rod 1, interior pipe 2, sacculus 3 and side pipe 6 can adopt the medical macromolecular materials pipe to make, and described macromolecular material comprises one or more in the materials such as polyethers-amino block copolymer resin, nylon resin, polyimide resin, polyurethane, politef, polyether-ether-ketone.After adopting medical macromolecular materials, this insertion type sacculus dilating catheter has certain elasticity, and can be crooked, can also have certain intensity simultaneously, can move in human vas thus, and can not cause damage to blood vessel.
In addition, push rod 1 can also adopt the braided wires reinforced pipe to make as required, described braided wires reinforced pipe is generally formed by three layers, comprise: internal layer, skin and mesh grid enhancement Layer, wherein: internal layer and outer field material pass the mesh of mesh grid enhancement Layer and the mesh grid enhancement Layer are closely wrapped up, and internal layer and skin all are macromolecular material.And the braided wires of described mesh grid enhancement Layer can be tinsel or HMLS fiber type long filament, and described fiber filament can comprise PFY, polypropylene filament yarn, Tynex, chinlon, carbon fiber etc.
In the present invention, when needs pass seal wire 11 from side pipe 6, in order to make the structure of this sacculus dilating catheter to switch fast between coaxial-type propelling movement and expansion structure and quick switch type propelling movement and expansion structure, this insertion type sacculus dilating catheter also includes lining core 10.
Fig. 2 is the use sketch map according to the sacculus dilating catheter of the embodiment of Fig. 1.In this accompanying drawing, far-end refers to left end, and near-end refers to right-hand member.
As shown in Figure 2, the near-end of pipe 2 in lining core 10 extends through in interior pipe 2, from the inside opening of side pipe 6, the diameter of lining core 10 is managed in 2 so that lining core 10 easily is inserted in this less than the internal diameter of interior pipe 2.The far-end of lining core 10 is positioned at the inside opening place of side pipe 6, and the near-end of lining core 10 passes the first interface 4-1 of connecting device 4 and fixed by locking device 12.When seal wire 11 penetrated the position of the inside opening that arrives side pipe 6 by the far-end of interior pipe 2, lining core 10 just can be so that seal wire 11 enters in the side pipe 6, and this moment, sacculus dilating catheter was quick switch type propelling movement and expansion structure.
In the embodiment of the present application, in order to make seal wire 11 by passing more easily in the side pipe 6, the far-end of lining core 10 is preferably wedge structure.Preferably, the angle of the inclined-plane of this wedge structure and the central axis of lining core 10 preferably with the central axis of the central axis of side pipe 6 and interior pipe 2 between angle equate.In addition, the material of lining core 10 adopts the macromolecular material identical with push rod 1 or interior pipe 2, makes that lining core 10 can be along with this sacculus dilating catheter bending together.In addition, the material of lining core 10 can also be tinsel.When needs are converted to the coaxial-type propelling movement with expansion structure with this sacculus dilating catheter, unscrew locking device 12 earlier, hold the near-end of lining core 10 to extract lining core 10 out, just pass along the inner chamber of interior pipe 2 and by the near-end of interior pipe 2 after seal wire 11 is penetrated by the far-end of interior pipe 2 like this, this moment, this sacculus dilating catheter just was coaxial-type propelling movement and expansion structure.
In the present invention, described sacculus dilating catheter refers to various sacculus dilating catheters well known to those of ordinary skill in the art, expands bracket conveyer etc. including, but not limited to PTCA sacculus dilating catheter, PTA sacculus dilating catheter, ball.
When pushing, at first seal wire 11 is penetrated in the blood vessel of pathological changes, then the far-end of interior pipe 2 tail end by seal wire 11 is penetrated, the complexity that is through according to diseased region in the blood vessel is then selected the position that passes of seal wire 11.The difficulty that diseased region in blood vessel is through is bigger, selects the near-end of seal wire by interior pipe 2 passed, and this moment, seal wire 11 was the coaxial-type distribution with interior pipe 2, is difficult to the diseased region that is through in the blood vessel so this sacculus dilating catheter can pass like a cork.The difficulty that diseased region in blood vessel is through is less, then with seal wire 11 by passing in the side pipe 6, it is shorter that at this moment this sacculus dilating catheter passes the length of seal wire 11, resistance is less, therefore can pass blood vessel fast.
In addition, when clinical practice is operated, the operation technique person can also be earlier with seal wire 11 by passing in the side pipe 6, when running into the diseased region that can't pass, extract this sacculus dilating catheter out human body again, so that the near-end of seal wire 11 by interior pipe 2 passed.That is, the operation technique person can be according to actual needs, rapid adjustment seal wire 11 pass the position, making can be at coaxial-type propelling movement and expansion structure and switch between switch type propelling movement and this dual mode of expansion structure fast, thereby can save operating time.
When sacculus 3 is pushed to the diseased region of blood vessel, can come out by the position display of development labelling under the X-ray in the position of sacculus.After sacculus arrives the vascular lesion position, in hand-hole, inject contrast solution, sacculus is expanded under the effect of pressure, conduit and seal wire are withdrawn from vasodilation that the diseased region place is narrow simultaneously after finishing.
By above technical scheme of the present invention as seen, the invention provides a kind of sacculus dilating catheter, wherein, between push rod and interior pipe, be provided with side pipe.When using this sacculus dilating catheter, after seal wire was entered by the far-end of interior pipe, seal wire not only can be passed by the near-end of interior pipe, but also can be by passing in the side pipe.And when seal wire was passed by the near-end of interior pipe, seal wire was coaxial distribution with interior pipe, so just can be so that this sacculus dilating catheter has stronger ride-through capability; When seal wire passed in by side pipe, this sacculus dilating catheter had only a bit of being through on the seal wire, and resistance is less, thus can be so that this sacculus dilating catheter advances along seal wire rapidly.
Therefore, this sacculus dilating catheter provided by the invention not only has the advantage of coaxial-type propelling movement and expansion structure, and quick switch type pushes and the advantage of expansion structure but also have.And, sacculus dilating catheter provided by the invention can also be according to the practical situation needs, between coaxial-type propelling movement and expansion structure and quick switch type propelling movement and these two kinds of structures of expansion structure, switch rapidly, thereby can save operating time, can improve success rate of operation simultaneously.
The above only is some specific embodiment of the application.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the present application principle and inventive concept, can also make some improvement and modification, these improve and modification also should be considered as dropping within the application's the protection domain and inventive concept.

Claims (11)

1. a sacculus dilating catheter comprises push rod, interior pipe, sacculus and connecting device, wherein:
Described push rod is hollow structure, and the far-end of this push rod and described sacculus fix, and the near-end of this push rod and described connecting device fix;
Pipe is for hollow structure in described, and pipe is in the inner chamber of the inner chamber of described push rod and described sacculus in this, and far-end and described sacculus that should interior pipe fix and pass described sacculus;
Described connecting device has first interface and second interface, described first interface is connected with the near-end of described interior pipe, the inner surface of described second interface and described push rod and described in space between the outer surface of pipe and described sacculus inner surface and described in space between the outer surface of pipe be connected
It is characterized in that:
Be provided with through hole in the wall of described push rod, described in pipe be provided with side pipe, the described through hole in the wall of described side pipe and described push rod is connected; And be provided with the lining core in described in the pipe removably, the far-end of this lining core is positioned at the inside opening place of described side pipe.
2. sacculus dilating catheter according to claim 1 is characterized in that: the distance of the inside opening of described side pipe and the far-end of described push rod is less than the distance of the far-end of the outside opening of described side pipe and described push rod.
3. according to each described sacculus dilating catheter among the claim 1-2, it is characterized in that: described through hole is 50 millimeters-500 millimeters from the distance of the far-end of described push rod.
4. according to each described sacculus dilating catheter among the claim 1-2, it is characterized in that: the far-end of described lining core is wedge structure, and the angle between the central axis of the angle of the inclined-plane of this wedge structure and the central axis of described lining core and the central axis of described side pipe and interior pipe equates.
5. according to each described sacculus dilating catheter among the claim 1-2, it is characterized in that:
Described push rod is medical macromolecular materials pipe or braided wires reinforced pipe; And/or
The material of described sacculus, described interior pipe and described side pipe is medical macromolecular materials; And/or
The material of described lining core is metal or medical macromolecular materials.
6. sacculus dilating catheter according to claim 5, it is characterized in that: described medical macromolecular materials comprise one or more in polyethers-amino block copolymer resin, nylon resin, polyimide resin, polyurethane, politef and the polyether-ether-ketone.
7. sacculus dilating catheter according to claim 5, it is characterized in that: described metal material is rustless steel or Nitinol.
8. sacculus dilating catheter according to claim 5, it is characterized in that: described metal material is titanium alloy.
9. according to each described sacculus dilating catheter among the claim 1-2, it is characterized in that: described sacculus dilating catheter further comprises head end, and this head end is fixed on the far-end of described interior pipe.
10. according to each described sacculus dilating catheter among the claim 1-2, it is characterized in that: described sacculus dilating catheter further comprises the stress anemostat, and this stress anemostat is arranged between described push rod and the described connecting device or is coated on the connecting portion place of described push rod and described connecting device.
11. according to each described sacculus dilating catheter among the claim 1-2, it is characterized in that: described sacculus dilating catheter further comprises the development labelling, described development labelling is embedded in or is enclosed within on the described interior pipe, and the position of described development labelling is relative with the position of described sacculus.
CN 201110132736 2011-05-17 2011-05-17 Balloon dilatation catheter Active CN102274575B (en)

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CN202951106U (en) * 2012-03-14 2013-05-29 上海微创医疗器械(集团)有限公司 Saccule expansion tube
JP5960910B2 (en) * 2013-04-01 2016-08-02 テルモ株式会社 In-vivo indwelling delivery system
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CN106595503B (en) * 2015-10-20 2019-06-25 上海微创医疗器械(集团)有限公司 Intervene the measuring system and its measurement method of class medical instrument fish mouth effect
CN107469222A (en) * 2016-06-06 2017-12-15 上海微创医疗器械(集团)有限公司 Foley's tube
CN107661162A (en) * 2016-07-29 2018-02-06 孙英贤 A kind of stent delivery system
JP6222763B1 (en) * 2017-01-31 2017-11-01 日本ライフライン株式会社 Balloon catheter
CN107773837A (en) * 2017-11-22 2018-03-09 仇汉诚 A kind of foley's tube
CN109846583A (en) * 2019-03-27 2019-06-07 吴忠隐 A kind of aortic stents window controlling system
CN110180072A (en) * 2019-06-26 2019-08-30 高峰 A kind of thrombolysis pipe and thrombolysis tube assembly
CN112704802A (en) * 2019-10-25 2021-04-27 河南驼人医疗器械集团有限公司 Balloon dilatation catheter and preparation method thereof
CN113599037A (en) * 2021-08-27 2021-11-05 苏州中天医疗器械科技有限公司 Quick exchange type balloon stent mounting device and stent mounting method
CN116271456B (en) * 2023-05-23 2023-08-11 杭州瑞维特医疗科技有限公司 Medicine sacculus pipe subassembly

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