CN203619729U - Stent conveying system and rear release component thereof - Google Patents
Stent conveying system and rear release component thereof Download PDFInfo
- Publication number
- CN203619729U CN203619729U CN201320835624.6U CN201320835624U CN203619729U CN 203619729 U CN203619729 U CN 203619729U CN 201320835624 U CN201320835624 U CN 201320835624U CN 203619729 U CN203619729 U CN 203619729U
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- Prior art keywords
- claw
- releasing unit
- seal wire
- induction system
- rear end
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Abstract
The utility model provides a stent conveying system and a rear release component of the stent conveying system. The rear release component is used for controlling the near end of a intravascular stent to be released and is arranged at the rear end of the conveying system, the rear release component comprises a front end fixing piece, a rear end clamping jaw and a control guide wire in sequence from the near end to the far end, one end of the rear end clamping jaw is separably connected with the front end fixing piece, and the other end of the rear end clamping jaw is connected with the control guide wire. According to the stent conveying system and the rear release component of the stent conveying system, the near end of the intravascular stent can be completely released after the intravascular stent is located accurately, and therefore the intravascular stent can be controlled to be released precisely.
Description
Technical field
This utility model relates to medical instruments field, is specifically related to the induction system of aortic stents, for the aortic aneurysm interventional therapy of (comprising dissection of aorta).This utility model also relates to the rear releasing unit of induction system.
Background technology
Arotic disease as aortic aneurysm, dissecting aneurysm of aorta etc. be the most fatal and one of the highest vascular surgery disease for the treatment of difficulty.Traditional Therapeutic Method is open surgery, implements artificial blood vessel's displacement.But open surgery wound is large, case fatality rate is high.
In recent years carry out a kind of Wicresoft, simple and direct intervene operation method for high-risk dissection of aorta patient, utilized overlay film frame to implement EVAR to dissection of aorta.This operation is delivered to aortal lesion locations by overlay film frame through induction system by the mini-incision of femoral artery, and protection lesion vessels, repairs aortic disease.
The mode of release overlay film frame that is used for the treatment of at present the induction system that aortic aneurysm large artery trunks Wicresoft gets involved is fairly simple, withdraws outer tube, and support is because the elasticity of self flicks afterwards.This delivery mode is accurate not aspect the release control of overlay film frame, and reason is: withdraw after outer tube, overlay film frame directly flicks, if and the off-position of overlay film frame is incorrect, can only take out overlay film frame by open surgery, operation wound is large, and case fatality rate is high.
Chinese utility model patent CN202699194U discloses a kind of branch formula endovascular stent for abdominal aorta and induction system thereof.This branch formula endovascular stent for abdominal aorta comprises the net tubular bracket of being made up of memorial alloy and is coated on the overlay film on this net tubular bracket, on the step at the leading portion position in described net tubular bracket, be at least provided with two sleeve branches, induction system comprises the releasing unit that can stretch in described net tubular bracket.Described releasing unit comprises lead-in wire and bending sleeve pipe, the front end of this bending sleeve pipe stretches into described net tubular bracket, and stretch in sleeve branch corresponding thereto to a lateral buckling, one end of lead-in wire is arranged on the tail end of bending sleeve pipe, and the other end stretches into bending sleeve pipe and sleeve branch is corresponding thereto connected.This induction system is still accurate not aspect the release control of overlay film frame.If the off-position of overlay film frame is not right, still can only take out overlay film frame by open surgery.
Summary of the invention
In view of the induction system that is used for the treatment of at present the intervention of aortic aneurysm large artery trunks Wicresoft is accurate not aspect the release control of support, this utility model provides a kind of induction system to overcome the problems referred to above.According to this utility model, the near-end of support can after discharge, withdraw after epitheca pipe, support is in half release conditions, near-end is still in bond, position that like this can trimming rack, thereby accurate positioning support.
First aspect, this utility model provides a kind of rear releasing unit for delivery of system.Described rear releasing unit is positioned at the near-end of described induction system, described rear releasing unit comprises in order front end fixture, rear end claw and controls seal wire from near-end to far-end, one end of described rear end claw is connected separably with described front end fixture, and the other end of described rear end claw is connected with described control seal wire.Construct with this, can realize half of support and discharge, that is: after rack body launches, the near-end of support is still in bond, position that like this can accurate adjustment support, and the near-end of releasing bracket again after finally determining position, launches support completely..
According to this utility model, rear end claw can be single parts, can be also to be formed by some unit constructions.The material of rear end claw can be macromolecule or metal.
Preferably, described rear releasing unit also comprises guide, and described rear end claw is through described guide, is guided and is kept direction by described guide.The material of described guide can be macromolecular material or metal.
Preferably, described rear releasing unit also comprises claw seal wire connector, the described other end of described rear end claw is connected via described claw seal wire connector with described control seal wire, one end of described claw seal wire connector is fixedly connected with described rear end claw or described rear end claw and described claw seal wire connector formation one, and the other end of described claw seal wire connector is fixedly connected with or is movably connected with described control seal wire.The material of described claw seal wire connector can be also macromolecular material or metal.Macromolecular material includes but not limited to Pebax, Nylon, PC, PE, PP, ABS.
According to embodiment of the present utility model, described rear end claw comprises many ripple bars that distribute along circumferentially.
According to embodiment of the present utility model, described rear end claw also comprises the parts that limit inner orifice, and described inner orifice allows the inner tube of described induction system to pass, and the parts of described restriction inner orifice are connected or form one with described many ripple bars.
According to embodiment of the present utility model, described front end fixture is along being circumferentially with the multiple blind holes corresponding with described many ripple bars, and described many ripple bars insert respectively in described multiple blind hole.
According to embodiment of the present utility model, described guide is along being circumferentially with the multiple perforation corresponding with described many ripple bars, and described many ripple bars are respectively through described multiple perforation.Construct with this, described guide can guide and keep the direction of each root ripple bar of rear end claw, avoids intersecting or bending, and is convenient in the blind hole of accurate many ripple pole pairs of rear end claw and introducing front end fixture.
Second aspect, this utility model provides a kind of induction system of support, and described induction system comprises epitheca pipe, inner tube, guiding wire and support.Described induction system also comprises above-mentioned rear releasing unit, discharge for the near-end of controlling support, described rear releasing unit longitudinal extension being passed by described inner tube in described epitheca pipe, and the near-end of described support is provided with perforation, described rear end claw passes described perforation to fetter the near-end of described support.Construct with this, the support assorted that rear releasing unit and near-end are established hole uses, described rear releasing unit is by the near-end constraint of support, and after epitheca pipe is withdrawn, rack body launches, and the near-end of support is due in bond and cannot flick, now support can slightly be finely tuned, to realize the accurate location of support, when confirming behind the exact position of support, can the near-end of support be decontroled by releasing unit after controlling, thereby support is launched completely.
Preferably, described induction system also comprises the conical head of the near-end that is positioned at described induction system, and it is connected with the near-end of described front end fixture.
Give according to induction system of the present utility model and rear releasing unit the function discharging after the near-end of support, made the release of support more accurate.
Brief description of the drawings
By the detailed description of with reference to the accompanying drawings this utility model embodiment being carried out, feature of the present utility model and advantage thereof will be apparent.Obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiment.Based on the embodiment in this utility model, those skilled in the art can obtain all other embodiment not making under creative work prerequisite, and these embodiment belong to the scope of this utility model protection.In the drawings:
Fig. 1 is according to the perspective schematic view of the rear releasing unit of this utility model embodiment.
Fig. 2 is according to the perspective schematic view of the front end fixture of the rear releasing unit of this utility model embodiment.
Fig. 3 is according to the perspective schematic view of the guide of the rear releasing unit of this utility model embodiment.
Fig. 4 is according to the perspective schematic view of the rear end claw of the rear releasing unit of this utility model embodiment.
Fig. 5 is according to the perspective schematic view of the rear end claw of the rear releasing unit of another embodiment of this utility model.
Fig. 6 is according to the perspective schematic view of the rear end claw of the rear releasing unit of the another embodiment of this utility model.
Fig. 7 is according to the schematic diagram of the near-end of support of the present utility model.
Fig. 8-Figure 10 is according to the schematic diagram of the process of the induction system releasing bracket of this utility model embodiment.
Detailed description of the invention
The embodiment of the induction system of aortic stents of the present utility model is described with reference to the accompanying drawings.In the following description, for convenience of description, used " far-end " and " near-end " and " longitudinally ", " far-end " and " near-end " reference be respectively approach induction system operating side a side and away from a side of operating side, " longitudinally " reference be the bearing of trend of induction system.
Fig. 1 has shown the rear releasing unit according to this utility model embodiment.As shown in Figure 1, described rear releasing unit is made up of front end fixture 1, guide 2, rear end claw 3, claw seal wire connector 4, control seal wire 5 to far-end D in order from near-end P.Fig. 1 has also shown the inner tube 6 of induction system, and it is through all parts of described rear releasing unit.
Fig. 2 has shown front end fixture 1.As shown in Figure 2, on front end fixture 1, there is inner orifice 1a to pass for inner tube 6, and along the multiple blind hole 1b that circumferentially distribute, the quantity of this blind hole is corresponding with the quantity of the ripple bar 3a of rear end claw 3, so that the ripple bar 3a of rear end claw 3 inserts corresponding blind hole 1b.The processing technique of front end fixture 1 can be injection molding or machined etc.
Fig. 3 has shown guide 2.As shown in Figure 3, on guide 2, there is inner orifice 2a to pass for inner tube 6, and along the multiple pilot hole 2b that circumferentially distribute.The quantity of pilot hole is identical with the quantity of the ripple bar 3a of rear end claw 3, so that the ripple bar 3a of rear end claw 3 is through the direction of each the root ripple bar 3a with guiding and maintenance rear end claw 3, avoid intersecting or bending, and be convenient to the ripple bar 3a of rear end claw 3 to aim at and introduce in the blind hole 1b of front end fixture 1.The processing technique of guide 2 can be injection molding or machined etc.The material of guide can be macromolecular material or metal, and the macromolecular material of employing includes but not limited to Pebax, Nylon, PC, PE, PP, ABS.
Fig. 4-6 have shown rear end claw 3.As shown in Figure 4, rear end claw 3 comprises the multiple ripple bar 3a that distribute along circumferentially, and it is fixedly connected to and limits the parts 3b that inner orifice passes for inner tube 6, the quantity of ripple bar according to the perforation 7a(of the near-end of support 7 referring to Fig. 7) quantity and determine.Can be by the parts 3b of machined, injection molding or other method processing efferent echo bar 3a and restriction inner orifice.Also the parts 3b of ripple bar 3a and restriction inner orifice can be coupled together.The method connecting includes but not limited to welding, and glue connects, hot melt.Glue connects the glue adopting and includes but not limited to loctite3011,3321,3493,3494,3321,3751; Dymax203a-cth-f, 204-cth-f, 1201-m-sc, 1128a-m; NuSil MED-2000P; Dow Corning SILASTIC MEDICAL ADHESIVE SILICONE, TYPE A.The material of rear end claw 3 can be metal or macromolecular material, and the macromolecular material of employing includes but not limited to Pebax, Nylon, PC, PE, PP, ABS.
The parts 3b of rear end claw 3 and restriction inner orifice can be made for single parts (as Fig. 5), and wherein the ripple bar 3a ' of rear end claw 3 is integrally formed with the parts 3b ' that limits inner orifice.Also then the parts 3b ' ' of rear end claw 3 and restriction inner orifice can be made respectively to combine (as Fig. 6), its medium wave bar 3a ' ' is fixedly connected to respectively the parts 3b ' ' that limits inner orifice.
The effect of claw seal wire connector 4 is that rear end claw 3 is connected with control seal wire 5, guarantees to pull control seal wire 5 can drive rear end claw 3 to move to far-end.Realize rear end claw 3 and include but not limited to welding with the method that control seal wire 5 is connected, glue connects, riveted joint, hot melt.The glue of hot melt and employing connects the glue adopting and includes but not limited to loctite3011,3321,3493,3494,3321,3751; Dymax203a-cth-f, 204-cth-f, 1201-m-sc, 1128a-m; NuSil MED-2000P; Dow Corning SILASTIC MEDICAL ADHESIVE SILICONE, TYPE A.
Claw seal wire connector 4 can form one with the parts 3b ' that limits inner orifice, as shown in Figure 5.Also can not establish independent claw seal wire connector 4, but be directly connected on the parts 3b ' ' that limits inner orifice, as shown in Figure 6 controlling seal wire 5.Connection includes but not limited to welding, and glue connects, riveted joint, or above make a call to two holes in addition at the parts 3b ' that limits inner orifice, wherein control seal wire 5 and form bifilar through these two holes.For easy to operate, the far-end of bifilar control seal wire 5 can be wrapped with heat-shrink tube.
In rear releasing unit, the ripple bar 3a of rear end claw 3 is inserted in the blind hole 1b of front end fixture 1 through the perforation 7a of the near-end of the support 7 of induction system, realizes thus the constraint of the near-end to support 7.In the time wanting the near-end of releasing bracket, pull and control seal wire 5, make rear end claw 3 separate and move to far-end with front end fixture 1.After the ripple bar 3a of rear end claw 3 pulls out from the perforation 7a of the near-end of support 7, the near-end of support 7 flicks.
Use the process of induction system implantation aortic stents 7 of the present utility model as follows.
The first step, mounting bracket 7.Rear end claw 3 is penetrated in the pilot hole 2b of guide 2, the near-end of support 7 is drawn in, then continue mobile rear end claw 3, make ripple bar 3a all on it through the perforation 7a of the near-end of support 7 and insert in the blind hole 1b on front end fixture 1.Now, due to the constraint of ripple bar 3a, the near-end of support 7 cannot launch.
Second step, imports induction system.As shown in Figure 8, penetrate guiding wire 8, then induction system is imported to ventral aorta along guiding wire 8 percutaneous punctures by femoral artery, its medium-height trestle 7 has been loaded in induction system together with rear releasing unit, described rear releasing unit is at the interior longitudinal extension of described epitheca pipe 10, inner tube 6 is through all parts of rear releasing unit, and the conical head 9 of induction system is connected with the front end fixture 1 of rear releasing unit.
The 3rd step, pushes to abdominal aortic aneurysm by induction system along guiding wire 8, and the point (not marking) that makes to develop arrives the position of abdominal aortic aneurysm neck, as shown in Figure 8.
The 4th step, withdraws epitheca pipe 10.Determine behind position, withdraw epitheca pipe 10, the main body of support 7 and branch are launched.So the near-end of support 7 can not launch (as Fig. 9) due to still in bond.
The 5th step, discharges near-end.The position of trimming rack, determine behind position when final, pull and control seal wire 5, make rear end claw 3 longitudinally move and separate with front end fixture 1 towards far-end, make the near-end of support 7 launch until the ripple bar 3a of rear end claw 3 is pulled out from the perforation 7a of the near-end of support 7, make thus support 7 be discharged (as Figure 10) completely.
Finally, withdraw from induction system and guiding wire 8, complete the implantation of support 7.
By the above-mentioned explanation of the disclosed embodiments, those skilled in the art can realize or use this utility model.The multiple amendment of these embodiment will be also apparent to those skilled in the art.For example, above embodiment reference be ventral aorta, but this utility model is equally applicable to other aorta.General Principle herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, this utility model is not limited to these embodiment shown in this article, meets the widest scope consistent with principle disclosed herein but contain.
Claims (9)
1. the rear releasing unit for delivery of system, described rear releasing unit is positioned at the near-end of described induction system, it is characterized in that, described rear releasing unit comprises in order front end fixture, rear end claw and controls seal wire from near-end to far-end, one end of described rear end claw is connected separably with described front end fixture, and the other end of described rear end claw is connected with described control seal wire.
2. rear releasing unit according to claim 1, is characterized in that, described rear releasing unit also comprises guide, and described rear end claw is through described guide, is guided and is kept direction by described guide.
3. rear releasing unit according to claim 1, it is characterized in that, described rear releasing unit also comprises claw seal wire connector, the described other end of described rear end claw is connected via described claw seal wire connector with described control seal wire, one end of described claw seal wire connector is fixedly connected with described rear end claw or described rear end claw and described claw seal wire connector formation one, and the other end of described claw seal wire connector is fixedly connected with or is movably connected with described control seal wire.
4. rear releasing unit according to claim 1 and 2, is characterized in that, described rear end claw comprises many ripple bars that distribute along circumferentially.
5. rear releasing unit according to claim 4, it is characterized in that, described rear end claw also comprises the parts that limit inner orifice, and described inner orifice allows the inner tube of described induction system to pass, and the parts of described restriction inner orifice are connected or form one with described many ripple bars.
6. rear releasing unit according to claim 4, is characterized in that, described front end fixture is along being circumferentially with the multiple blind holes corresponding with described many ripple bars, and described many ripple bars insert respectively in described multiple blind hole.
7. rear releasing unit according to claim 4, is characterized in that, described guide is along being circumferentially with the multiple perforation corresponding with described many ripple bars, and described many ripple bars are respectively through described multiple perforation.
8. the induction system of a support, described induction system comprises epitheca pipe, inner tube, guiding wire and support, is characterized in that, described induction system also comprises according to the rear releasing unit described in any one in claim 1-7, discharge for the near-end of controlling support, described rear releasing unit longitudinal extension being passed by described inner tube in described epitheca pipe, and the near-end of described support is provided with perforation, described rear end claw through described perforation to fetter the near-end of described support.
9. induction system according to claim 8, is characterized in that, described induction system also comprises the conical head of the near-end that is positioned at described induction system, is connected with the near-end of described front end fixture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835624.6U CN203619729U (en) | 2013-12-17 | 2013-12-17 | Stent conveying system and rear release component thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320835624.6U CN203619729U (en) | 2013-12-17 | 2013-12-17 | Stent conveying system and rear release component thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203619729U true CN203619729U (en) | 2014-06-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320835624.6U Withdrawn - After Issue CN203619729U (en) | 2013-12-17 | 2013-12-17 | Stent conveying system and rear release component thereof |
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| CN (1) | CN203619729U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104706449A (en) * | 2013-12-17 | 2015-06-17 | 微创心脉医疗科技（上海）有限公司 | Stent delivery system and later releasing assembly thereof |
| CN106943218A (en) * | 2016-07-29 | 2017-07-14 | 上海沃比医疗科技有限公司 | Implant induction system |
| CN109567981A (en) * | 2017-09-29 | 2019-04-05 | 微创心脉医疗科技（上海）有限公司 | Support system and its conveying device, rear release structure and bracket |
| CN114098883A (en) * | 2022-01-27 | 2022-03-01 | 上海微创心脉医疗科技(集团)股份有限公司 | Support conveying device and support conveying system |
-
2013
- 2013-12-17 CN CN201320835624.6U patent/CN203619729U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104706449A (en) * | 2013-12-17 | 2015-06-17 | 微创心脉医疗科技（上海）有限公司 | Stent delivery system and later releasing assembly thereof |
| WO2015090188A1 (en) * | 2013-12-17 | 2015-06-25 | 微创心脉医疗科技（上海）有限公司 | Stent delivery system and post release assembly thereof |
| CN106943218A (en) * | 2016-07-29 | 2017-07-14 | 上海沃比医疗科技有限公司 | Implant induction system |
| CN106943218B (en) * | 2016-07-29 | 2019-11-05 | 上海沃比医疗科技有限公司 | Implantation material transportation system |
| CN109567981A (en) * | 2017-09-29 | 2019-04-05 | 微创心脉医疗科技（上海）有限公司 | Support system and its conveying device, rear release structure and bracket |
| CN114098883A (en) * | 2022-01-27 | 2022-03-01 | 上海微创心脉医疗科技(集团)股份有限公司 | Support conveying device and support conveying system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140604 Effective date of abandoning: 20171107 |
|
| AV01 | Patent right actively abandoned |