CN102772850A - Medical dilation device - Google Patents
Medical dilation device Download PDFInfo
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- CN102772850A CN102772850A CN201210234305XA CN201210234305A CN102772850A CN 102772850 A CN102772850 A CN 102772850A CN 201210234305X A CN201210234305X A CN 201210234305XA CN 201210234305 A CN201210234305 A CN 201210234305A CN 102772850 A CN102772850 A CN 102772850A
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- dilator
- fascia dilator
- fascia
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Abstract
The invention discloses a medical dilation device. The medical dilation device comprises a dilator and a dilation sheath. The dilator and the dilation sheath are respectively a conduit of which the surface is provided with scales; the front end of the medical dilation device is used for entering an organism; the dilator comprises a first fascia dilator, a second fascia dilator, a third fascia dilator and a fourth fascia dilator; the second fascia dilator is movably sheathed on the first fascia dilator; the third dilator is movably sheathed on the second fascia dilator; the fourth fascia dilator is movably sheathed on the third fascia dilator; and the dilation sheath is movably sheathed on the fourth fascia dilator. Through the manner, the dilation frequencies can be reduced when percutaneous nephrolithotomy is performed, and meanwhile, the dilation depth can be positioned to ensure surgical safety.
Description
Technical field
The present invention relates to medical field, particularly relate to a kind of medical extension fixture.
Background technology
The PCN rubble of prior art is got the step that stone operation comprises to be had: (1) at first through X-ray or B ultrasonic in location, kidney district, confirm the calculus position, utilize paracentesis trocar to carry out percutaneous renal puncture then, confirm after puncture puts in place nook closing member to be taken out; (2) seal wire is sent in renal calices, renal pelvis and the ureter through the puncture casing needle passageway; (3) withdraw from paracentesis trocar along seal wire; (4) be expanded to needed caliber with dilator step by step along seal wire.Be specially; Generally from 6Fr (dilator diameters, 3Fr=1mm) dilator begins expansion, extracts the 6Fr dilator out and inserts the expansion of 8Fr dilator again; And then extract the 8Fr dilator out and insert the expansion of 10Fr dilator; Use different dilators to get into, withdraw from, get into again successively, progressively be expanded to 12Fr, 14Fr, 16Fr, 18Fr, 20Fr, 22Fr, 24Fr, 26Fr and 30Fr by that analogy, increase progressively expansion with 2Fr at every turn; (5) confirm to be expanded to 18Fr-30Fr according to the specification of used PCN and do not wait, insertion needs the expansion sheath of specification again; (6) through the expansion sheath, insert PCN and observe or treat operation.
Above-mentioned operation method is when expanding, and dilator needs to get into, and withdraws from; Get into large diameter dilator again, gradation expansion repeatedly, consuming time more; Simultaneously; The position of percutaneous puncture can make the blood vessel injury in the wound increase because of passing in and out repeatedly of dilator, causes hemorrhage increasing, and increases operating difficulty.
Summary of the invention
The technical problem that the present invention mainly solves provides a kind of medical extension fixture, the frequency of expanding in the time of can reducing percutaneous renal puncture, and the while can be located the degree of depth of expansion, guarantees operation safety.
For solving the problems of the technologies described above, the present invention provides a kind of medical extension fixture, comprises dilator and expansion sheath, and dilator is the surface with the expansion sheath and is provided with graduated conduit, and the front end of this medical treatment extension fixture is used to get into organism; Dilator comprises first fascia dilator, second fascia dilator, the 3rd fascia dilator and the 4th fascia dilator; Wherein, Second fascia dilator movably is enclosed within on first fascia dilator; The 3rd fascia dilator movably is enclosed within on second fascia dilator, and the 4th fascia dilator movably is enclosed within on the 3rd fascia dilator, and the expansion sheath movably is enclosed within on the 4th fascia dilator.
Wherein, first fascia dilator is a metal catheter, and its front end is provided with fixing head, and the external diameter of fixing head is greater than the internal diameter of second fascia dilator; Wherein, the fixing head internal channel links to each other with the metal catheter internal channel.
Wherein, second fascia dilator is built-in with the steel ring that is used to reinforce second fascia dilator.
Wherein, the rear end of the 3rd fascia dilator is provided for being fixed in the first circular interior reducing of the second fascia dilator rear end; And the rear end of the 4th fascia dilator is provided for being fixed in the second circular interior reducing of the 3rd fascia dilator rear end.
Wherein, the length of second fascia dilator, the 3rd fascia dilator and the 4th fascia dilator is identical.
Wherein, the front end of expansion sheath is an inclined-plane, and the inclined-plane is 75 degree with the angle of the axis of expansion sheath; The rear end of expansion sheath is provided with groove, bottom portion of groove be provided with one be used for fixing seal wire circular hole.
Wherein, fixing head is oval fixing head or rugby shape fixing head.
Wherein, the diameter of first fascia dilator, second fascia dilator, the 3rd fascia dilator, the 4th fascia dilator and expansion sheath is respectively 7Fr, 13Fr, 18Fr, 22Fr and 22Fr; Or the diameter of first fascia dilator, second fascia dilator, the 3rd fascia dilator, the 4th fascia dilator and expansion sheath is respectively 7Fr, 13Fr, 20Fr, 24Fr and 24Fr.
Wherein, medical extension fixture also comprises the 5th fascia dilator; Wherein, the diameter of the 5th fascia dilator is 26Fr, and the diameter of expansion sheath is 26Fr; Or the diameter of the 5th fascia dilator is 30Fr, and the diameter of expansion sheath is 30Fr.
The invention has the beneficial effects as follows: medical extension fixture of the present invention comprises dilator and expansion sheath, and dilator is the surface with the expansion sheath and is provided with graduated conduit, massive hemorrhage in the art that dark excessively expansion causes when avoiding percutaneous renal puncture through scale is set.Wherein, dilator comprises first fascia dilator, second fascia dilator, the 3rd fascia dilator and the 4th fascia dilator.When percutaneous renal puncture was expanded, second fascia dilator movably was enclosed within on first fascia dilator, and the 3rd fascia dilator movably is enclosed within on second fascia dilator; The 4th fascia dilator movably is enclosed within on the 3rd fascia dilator, and the expansion sheath movably is enclosed within on the 4th fascia dilator, when avoiding the prior art expansion; Dilator needs to get into; Withdraw from, get into the expansion repeatedly of major diameter dilator again, reduce the expansion frequency.By the way, can guarantee the operation safety of percutaneous renal puncture expansion, reduce complication in the art.
Description of drawings
Fig. 1 is the section of structure of the present invention's medical treatment extension fixture one embodiment;
Fig. 2 is the section of structure of first fascia dilator shown in Figure 1;
Fig. 3 is the section of structure of the first fascia dilator fixing head shown in Figure 2;
Fig. 4 is the texture edge figure of expansion sheath shown in Figure 1.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Medical extension fixture of the present invention is the Dispoable medical consumptive material, is made up of dilator and expansion sheath, can disposable continuous gradual carry out the percutaneous renal puncture expansion.
As shown in Figure 1, Fig. 1 is the section of structure of the present invention's medical treatment extension fixture one embodiment, and is as shown in the figure, and medical extension fixture comprises dilator and expansion sheath.Dilator comprises first fascia dilator 11, second fascia dilator 12, the 3rd fascia dilator 13 and the 4th fascia dilator 14.The expansion sheath is expansion sheath 15.
Wherein, Second fascia dilator 12 movably is enclosed within on first fascia dilator 11; The 3rd fascia dilator 13 movably is enclosed within on second fascia dilator 12; The 4th fascia dilator 14 movably is enclosed within on the 3rd fascia dilator 13, and expansion sheath 15 movably is enclosed within on the 4th fascia dilator 14.
In the present embodiment, the end that definition dilator and expansion sheath are used to get into organism is a front end, and the other end is the rear end.
In the present embodiment, dilator and expansion sheath are the surface graduated conduit are set.
Being characterized as of above-mentioned each dilator and expansion sheath:
A. first fascia dilator 11, as first dilating catheter of percutaneous renal puncture, it is a metal structure, diameter is 7Fr (3Fr=1mm), long 45cm, the band scale, internal diameter is 2.40 ± 0.03mm, external diameter is 3.00 ± 0.03mm.
As shown in Figure 2, Fig. 2 is the section of structure of first fascia dilator shown in Figure 1, and first fascia dilator 11 comprises metal catheter 111 and fixing head 112 (as shown in Figure 3).Fixing head 112 is arranged at the front end of metal catheter 111, to make things convenient for the smooth insertion of percutaneous when expansion first fascia dilator 11.Be specially fixing head 112 laser weld in metal catheter 111 front ends, and fixing head 112 internal channels link to each other with metal catheter 111 internal channels.The distance that metal catheter 111 gets in the fixing head 112 is 1.80 ± 0.25mm; Fixing head 112 is 3.00mm along the length of metal catheter 111 axis directions; The length of fixing head 112 vertical metal conduits 111 axis directions is 2.80 ± 0.02mm; The channel diameter of metal catheter 111 is 2.35 ± 0.02mm in the fixing head 112, and the channel diameter of fixing head 112 is 1.00 ± 0.02mm.
Simultaneously, the external diameter of fixing head 112 can stop that greater than the internal diameter of second fascia dilator 12 mistake of second fascia dilator 12 is expanded deeply in the present embodiment.
Wherein, fixing head can be the fixing head of ellipse or rugby shape.
Technological requirement for first fascia dilator 11 is following:
Material is 304 rustless steels, and color is a Natural color, cleaning surfaces, clean; Do not have batch cutting edge of a knife or a sword, oxidative phenomena, inner chamber does not have tangible burr, cut, smooth surface; Do not have the sensation of scraping hands, surface smoothness is 0.8um, meets the requirement of A grade standard in the YY/T0149-2006 test method 6.
Following for fixing head 112 with the technological requirement of metal catheter 111 laser weld:
Weld is smooth, smooth, does not have the phenomenon of burning, turn black, the dilator after the welding can with the pipe no-float of diameter (Φ) 2.40mm, and can bear the lasting 30s non-loosening of 2.0kgf, sign comes off.
B. second fascia dilator 12, for the surface is provided with graduated plastic catheter, diameter is 13Fr, white, long 240mm, external diameter are 4.30mm, internal diameter is 3.10mm, wall thickness is 0.60mm, with the area of axis vertical be 6.9743mm
2, can be along the 11 smooth percutaneous expansions of first fascia dilator, its built-in steel ring is used to make the 12 firmer convenient expansions of second fascia dilator.The surface is provided with the mistake that scale can prevent second fascia dilator 12 and expands deeply.
C. the 3rd fascia dilator 13, for the surface is provided with graduated plastic catheter, diameter is 18Fr, white, long 240mm, external diameter are 6.00mm, internal diameter is 4.60mm, wall thickness is 0.70mm, with the area of axis vertical be 11.6553mm
2, can be along the 12 smooth percutaneous expansions of second fascia dilator.Its rear end is set to circular interior reducing, for fixing to the rear end of second fascia dilator 12.
D. the 4th fascia dilator 14, for the surface is provided with graduated plastic catheter, diameter is 22Fr, white, long 240mm, external diameter are 7.30mm, internal diameter is 6.30mm, wall thickness is 0.50mm, with the area of axis vertical be 10.6814mm
2, can be along the 13 smooth percutaneous expansions of the 3rd fascia dilator.Its rear end is set to circular interior reducing, for fixing to the rear end of the 3rd fascia dilator 13.
E. expand sheath 15, for the surface is provided with graduated plastic catheter, diameter is 22Fr, white, and long 150mm, external diameter are 8.50mm, internal diameter is 7.50mm.As shown in Figure 4, the front end of expansion sheath is an inclined-plane, and the inclined-plane is 75 degree with the angle of expansion sheath axis; The rear end is provided with groove 151, and groove 151 width are 0.20mm, and groove 151 length are 5.00mm; One circular hole 152 is arranged at groove 151 bottoms, is used for fixing seal wire, and Circularhole diameter is 0.90mm.
In the present embodiment, except that above-mentioned dilator and expansion sheath, also comprise the expansion sheath of a 18Fr, external diameter is 7.20mm, and internal diameter is 6.20mm, according to the operation needs, can use the expansion sheath of 18Fr or the expansion sheath of 22Fr.
The specific embodiment of present embodiment is that above-mentioned medical treatment device can be used for the PCN rubble and gets the stone operation, at first locatees in the kidney district through X-ray; Confirm the calculus position, use lancet puncture, after the puncture; Nook closing member is taken out, and visible urine flows out, and seal wire is sent into renal calices, renal pelvis and ureter through puncture needle; Withdraw from puncture needle, same visible urine flows out.
Expand then, before the expansion, when locating, can confirm the distance of calculus and human body surface skin, be generally 7-10cm through X-ray.At first be expanded to assigned address along seal wire, promptly have the position of calculus with first fascia dilator 11.Because there is scale on first fascia dilator, 11 surfaces, can prevent dark expansion.
Then under the situation of not extracting first fascia dilator 11 out; Second fascia dilator 12 is expanded along first fascia dilator, 11 percutaneous; Because first fascia dilator, 11 front ends have fixing head, can make second fascia dilator 12 be fixed in fixing head, prevent overdistension.Then utilize the 3rd fascia dilator 13 along the expansion of second fascia dilator, 12 percutaneous, the 4th fascia dilator 14 is along the expansion of the 3rd fascia dilator 13 percutaneous, after expansion is accomplished; Insert expansion sheath 15 along the 4th fascia dilator 14; At last, extract first fascia dilator 11 out, because first fascia dilator, 11 front ends have fixing head; Therefore, second fascia dilator 12, the 3rd fascia dilator 13 and the 4th fascia dilator 14 can be extracted out along with first fascia dilator 11 together.Significantly reduced, the massive hemorrhage of avoiding too much puncture expansion to cause the operation expansion time.
Wherein, the seal wire of insertion can be fixed in the groove 151 of expansion sheath 15 rear ends, gets into smoothly in the kidney to make things convenient for apparatus and chamber mirror, also can prevent the slippage and the damage of seal wire when apparatus gets into simultaneously.
Seal wire is inserted PCN and is observed or treat after expansion sheath 15 is fixed.
A kind of novel percutaneous kidney seriality that present embodiment provides is extension fixture progressively; Its advantage does; A. can not only one-time continuous property progressively expand, and can have scale to guide, make things convenient for the doctor to confirm that accurately patient is by the degree of depth of skin to renal pelvis, renal calices; Avoid the probability of massive hemorrhage in the art effectively, make operation more safe and reliable.B. reduce the frequency of percutaneous renal puncture expansion, avoid complication such as hemorrhage.C. expand sheath 15 and be provided with seal wire fixed groove 151, can reduce the slippage and the damage of seal wire.
In other embodiments, the diameter of first fascia dilator 11, second fascia dilator 12, the 3rd fascia dilator 13, the 4th fascia dilator 14 and expansion sheath 15 is respectively 7Fr, 13Fr, 20Fr, 24Fr and 24Fr.Wherein, the diameter of expansion sheath 15 can also be 20Fr.
The length and material and embodiment illustrated in fig. 1 identical of above-mentioned dilator and expansion sheath are the thickness difference, as 20Fr (external diameter is 6.70mm, and internal diameter is 4.60mm, and wall thickness is 1.05mm, with the area of axis vertical be 18.6375mm
2), 24Fr (external diameter is 8.00mm, and internal diameter is 7.00mm, and wall thickness is 0.5mm, with the area of axis vertical be 11.7810mm
2), the expansion sheath (external diameter is 7.90mm, and internal diameter is 6.90mm) of the expansion sheath of 24Fr (external diameter is 9.20mm, and internal diameter is 8.20mm) and 20Fr.
In other embodiments; Medical treatment comprises in the extension fixture: first fascia dilator 11, second fascia dilator 12, the 3rd fascia dilator 13, the 4th fascia dilator 14 and expansion sheath 15; Also comprise the 5th fascia dilator; Wherein, the 5th fascia dilator is removable to be enclosed within on the 4th fascia dilator 14, expansion sheath 15 removable being enclosed within on the 5th fascia dilator.
Wherein, The diameter of first fascia dilator 11, second fascia dilator 12, the 3rd fascia dilator 13, the 4th fascia dilator 14, the 5th fascia dilator and expansion sheath 15 is respectively 7Fr, 13Fr, 18Fr, 22Fr, (external diameter is 8.70mm to 26Fr; Internal diameter is 7.60mm; Wall thickness is 0.55mm, with the area of axis vertical be 14.0822mm
2) and 26Fr (external diameter is 9.90mm, and internal diameter is 8.90mm).
The diameter of first fascia dilator 11, second fascia dilator 12, the 3rd fascia dilator 13, the 4th fascia dilator 14, the 5th fascia dilator and expansion sheath 15 can also be respectively 7Fr, 13Fr, 20Fr, 24Fr, (external diameter is 10.00mm to 30Fr; Internal diameter is 8.30mm; Wall thickness is 0.85mm, with the area of axis vertical be 24.4337mm
2) and 30Fr (external diameter is 11.20mm, and internal diameter is 10.20mm).
In the above-described embodiments, medical extension fixture can make things convenient for the doctor to expand according to the corrective surgery needs through selecting different fascia dilators, saves time, and prevents hemorrhagely, guarantees safety.
In other embodiments, dilator can comprise a plurality of fascia dilators, and fascia dilator can be above-mentioned diameter or other diameters.
In sum, medical extension fixture of the present invention comprises dilator and expansion sheath, and dilator is the surface with the expansion sheath and is provided with graduated conduit, massive hemorrhage in the art that dark excessively expansion causes when avoiding percutaneous renal puncture through scale is set.Wherein, dilator comprises first fascia dilator, second fascia dilator, the 3rd fascia dilator and the 4th fascia dilator.When percutaneous renal puncture was expanded, second fascia dilator movably was enclosed within on first fascia dilator, and the 3rd fascia dilator movably is enclosed within on second fascia dilator; The 4th fascia dilator movably is enclosed within on the 3rd fascia dilator, and the expansion sheath movably is enclosed within on the 4th fascia dilator, when avoiding the prior art expansion; Dilator needs to get into; Withdraw from, get into the expansion repeatedly of major diameter dilator again, reduce the expansion frequency.By the way, can guarantee the operation safety of percutaneous renal puncture expansion, reduce complication in the art.
The above is merely embodiments of the invention; Be not so limit claim of the present invention; Every equivalent structure or equivalent flow process conversion that utilizes description of the present invention and accompanying drawing content to be done; Or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present invention.
Claims (9)
1. medical extension fixture is characterized in that:
Comprise dilator and expansion sheath, said dilator is the surface with the expansion sheath and is provided with graduated conduit, and the front end of this medical treatment extension fixture is used to get into organism;
Said dilator comprises first fascia dilator, second fascia dilator, the 3rd fascia dilator and the 4th fascia dilator;
Wherein, Said second fascia dilator movably is enclosed within on said first fascia dilator; Said the 3rd fascia dilator movably is enclosed within on said second fascia dilator; Said the 4th fascia dilator movably is enclosed within on said the 3rd fascia dilator, and said expansion sheath movably is enclosed within on said the 4th fascia dilator.
2. medical extension fixture according to claim 1 is characterized in that,
Said first fascia dilator is a metal catheter, and its front end is provided with fixing head, and the external diameter of said fixing head is greater than the internal diameter of said second fascia dilator;
Wherein, said fixing head internal channel links to each other with said metal catheter internal channel.
3. medical extension fixture according to claim 2 is characterized in that,
Said second fascia dilator is built-in with the steel ring that is used to reinforce said second fascia dilator.
4. medical extension fixture according to claim 3 is characterized in that,
The rear end of said the 3rd fascia dilator is provided for being fixed in the first circular interior reducing of the said second fascia dilator rear end; And
The rear end of said the 4th fascia dilator is provided for being fixed in said the 3rd fascia dilator rear end second circular interior reducing.
5. according to the described medical extension fixture of any claim of claim 1-4, it is characterized in that,
The length of said second fascia dilator, said the 3rd fascia dilator and said the 4th fascia dilator is identical.
6. medical extension fixture according to claim 4 is characterized in that,
The front end of said expansion sheath is an inclined-plane, and the angle of the axis of said inclined-plane and said expansion sheath is 75 degree;
The rear end of said expansion sheath is provided with groove, said bottom portion of groove be provided with one be used for fixing seal wire circular hole.
7. medical extension fixture according to claim 2 is characterized in that,
Said fixing head is oval fixing head or rugby shape fixing head.
8. medical extension fixture according to claim 1 is characterized in that,
The diameter of said first fascia dilator, said second fascia dilator, said the 3rd fascia dilator, said the 4th fascia dilator and said expansion sheath is respectively 7Fr, 13Fr, 18Fr, 22Fr and 22Fr; Or
The diameter of said first fascia dilator, said second fascia dilator, said the 3rd fascia dilator, said the 4th fascia dilator and said expansion sheath is respectively 7Fr, 13Fr, 20Fr, 24Fr and 24Fr.
9. medical extension fixture according to claim 8 is characterized in that:
Said medical extension fixture also comprises the 5th fascia dilator;
Wherein, the diameter of said the 5th fascia dilator is 26Fr, and the diameter of said expansion sheath is 26Fr; Or
The diameter of said the 5th fascia dilator is 30Fr, and the diameter of said expansion sheath is 30Fr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234305XA CN102772850A (en) | 2012-07-06 | 2012-07-06 | Medical dilation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210234305XA CN102772850A (en) | 2012-07-06 | 2012-07-06 | Medical dilation device |
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| Publication Number | Publication Date |
|---|---|
| CN102772850A true CN102772850A (en) | 2012-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210234305XA Pending CN102772850A (en) | 2012-07-06 | 2012-07-06 | Medical dilation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107320068A (en) * | 2017-06-12 | 2017-11-07 | 长飞光纤光缆股份有限公司 | A kind of preparation method of insertion type probe body |
Citations (6)
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|---|---|---|---|---|
| US4862891A (en) * | 1988-03-14 | 1989-09-05 | Canyon Medical Products | Device for sequential percutaneous dilation |
| US6106540A (en) * | 1996-01-22 | 2000-08-22 | Baxter International Inc. | Dilator and introducer assembly |
| CN100408124C (en) * | 2002-12-20 | 2008-08-06 | 伊西康内外科公司 | Transparent dilator device and method of use |
| CN201379888Y (en) * | 2009-02-16 | 2010-01-13 | 北京微创介入医疗装备有限公司 | Composite structured percutaneous nephrectasia system |
| CN201537305U (en) * | 2009-04-17 | 2010-08-04 | 夏术阶 | dilation appliance for percutaneous nephroscopeset operation |
| CN202682537U (en) * | 2012-07-06 | 2013-01-23 | 马涛 | Medical dilating device |
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2012
- 2012-07-06 CN CN201210234305XA patent/CN102772850A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4862891A (en) * | 1988-03-14 | 1989-09-05 | Canyon Medical Products | Device for sequential percutaneous dilation |
| US6106540A (en) * | 1996-01-22 | 2000-08-22 | Baxter International Inc. | Dilator and introducer assembly |
| CN100408124C (en) * | 2002-12-20 | 2008-08-06 | 伊西康内外科公司 | Transparent dilator device and method of use |
| CN201379888Y (en) * | 2009-02-16 | 2010-01-13 | 北京微创介入医疗装备有限公司 | Composite structured percutaneous nephrectasia system |
| CN201537305U (en) * | 2009-04-17 | 2010-08-04 | 夏术阶 | dilation appliance for percutaneous nephroscopeset operation |
| CN202682537U (en) * | 2012-07-06 | 2013-01-23 | 马涛 | Medical dilating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107320068A (en) * | 2017-06-12 | 2017-11-07 | 长飞光纤光缆股份有限公司 | A kind of preparation method of insertion type probe body |
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Application publication date: 20121114 |