CN109223250B

Movatterモバイル変換

Info

Publication number: CN109223250B
Application number: CN201811192271.6A
Authority: CN
Inventors: 卞晓明; 钱向阳; 杨延宗; 夏云龙; 徐庶; 郑成福
Original assignee: Dalian Corvivo Medical Co ltd
Current assignee: Dalian Corvivo Medical Co ltd
Priority date: 2018-10-12
Filing date: 2018-10-12
Publication date: 2020-12-29
Anticipated expiration: 2038-10-12
Also published as: CN109223250A; WO2020073972A1

Abstract

The invention relates to a sewing-free integrated branch covered stent blood vessel, belonging to the technical field of medical instruments. The sewing-free integrated branch covered stent blood vessel comprises an artificial blood vessel, a covered stent and a pressure ring assembly; the far end of the artificial blood vessel is connected with the near end of the covered stent; the pressing ring assembly comprises a pressing ring and a fixing piece; the outer wall of the artificial blood vessel is provided with a fixing piece; one end of the pressing ring is movably connected to the fixing piece, so that the pressing ring can change the position of the pressing ring relative to the artificial blood vessel around the fixing piece. The sewing-free integrated branch covered stent blood vessel of the invention utilizes the elasticity of the compression ring to clamp and close the anastomotic stoma so as to avoid the method of suturing the anastomotic stoma in the artificial blood vessel replacement and achieve the effects of stopping bleeding and reducing the operation time.

Description

Translated fromChinese

一种免缝合一体式分支覆膜支架血管A suture-free integrated branch covered stent-graft vessel

技术领域technical field

本发明涉及一种免缝合一体式分支覆膜支架血管，属于医疗器械技术领域。The invention relates to a suture-free integrated branch covered stent blood vessel, which belongs to the technical field of medical devices.

背景技术Background technique

人工血管-覆膜支架移植术是治疗主动脉夹层瘤及其它大血管病变的重要手段。人工血管-覆膜支架移植后，由于血管内血流流通的压力作用，往往存在吻合口针孔漏血的问题，另外，血管吻合费时长，也增加了脑缺血时间，这些都是术后并发症的发生和增加死亡的主要原因。因此，吻合口止血始终是人工血管-覆膜支架移植术中亟待解决的问题，需要一种更为有效，切实可行的简便方式来达到吻合口止血的目的。Artificial blood vessel-stent grafting is an important method for the treatment of aortic dissection and other large vessel diseases. After artificial blood vessel-stent graft transplantation, due to the pressure of blood flow in the blood vessel, there is often a problem of blood leakage from the needle hole of the anastomosis. In addition, the vascular anastomosis takes a long time and increases the cerebral ischemia time. These are all postoperative complications. Complications and leading causes of increased mortality. Therefore, anastomotic hemostasis is always an urgent problem to be solved in artificial blood vessel-stent graft transplantation, and a more effective, practical and simple method is needed to achieve the purpose of anastomotic hemostasis.

发明内容SUMMARY OF THE INVENTION

本发明利用压环的弹性，以夹紧的方式封闭吻合口，解决了上述问题。The present invention utilizes the elasticity of the pressing ring to close the anastomotic opening in a clamping manner, thereby solving the above problems.

本发明提供了一种免缝合一体式分支覆膜支架血管，所述免缝合一体式分支覆膜支架血管包括人工血管、覆膜支架、压环组件；所述人工血管的远端与覆膜支架的近端连接；所述压环组件包括压环、固定件；所述人工血管的外壁上设有固定件；所述压环的一端活动连接在固定件上，使所述压环可绕固定件改变压环相对人工血管的位置。The present invention provides a suture-free integrated branched stent-covered blood vessel. The suture-free integrated branched stent-covered blood vessel includes an artificial blood vessel, a covered stent and a pressure ring assembly; the distal end of the artificial blood vessel is connected to the covered stent. The proximal end of the pressure ring is connected; the pressure ring assembly includes a pressure ring and a fixing piece; a fixing piece is provided on the outer wall of the artificial blood vessel; one end of the pressure ring is movably connected to the fixing piece, so that the pressure ring can be fixed around The device changes the position of the pressure ring relative to the artificial blood vessel.

本发明优选为所述压环的形状为波形环。In the present invention, it is preferable that the shape of the pressure ring is a wave ring.

本发明优选为所述压环的内径小于覆膜支架的外径。In the present invention, preferably, the inner diameter of the pressure ring is smaller than the outer diameter of the stent-graft.

本发明优选为所述压环由弹性金属或高分子材料制成，进一步优选为所述压环由镍钛合金制成，所述镍钛合金具有形状记忆能力和超弹性。In the present invention, preferably, the pressure ring is made of elastic metal or polymer material, and more preferably, the pressure ring is made of nickel-titanium alloy, and the nickel-titanium alloy has shape memory capability and superelasticity.

本发明优选为所述压环组件还包括盖膜，所述盖膜置于覆膜支架外，且所述盖膜与固定件连接。In the present invention, preferably, the pressing ring assembly further includes a cover film, the cover film is placed outside the stent graft, and the cover film is connected to the fixing member.

本发明优选为所述人工血管包括人工血管主支和0-4个人工血管分支，0-4个所述人工血管分支分别从人工血管主支向外延伸并与人工血管主支流体连通，所述人工血管主支的远端与覆膜支架的近端连接。In the present invention, preferably, the artificial blood vessel comprises a main branch of the artificial blood vessel and 0-4 branches of the artificial blood vessel, and 0-4 branches of the artificial blood vessel respectively extend outward from the main branch of the artificial blood vessel and are in fluid communication with the main branch of the artificial blood vessel, so The distal end of the main branch of the artificial blood vessel is connected with the proximal end of the covered stent.

本发明优选为所述人工血管的内层由涤纶或聚四氟乙烯制成。In the present invention, the inner layer of the artificial blood vessel is preferably made of polyester or polytetrafluoroethylene.

本发明优选为所述覆膜支架包括支架、膜，膜固定在支架上。In the present invention, preferably, the covered stent includes a stent and a membrane, and the membrane is fixed on the stent.

本发明优选为所述支架包括支架主支和0-1个支架分支，0-1个所述支架分支从支架主支向外延伸并与支架主支流体连通，所述人工血管主支的远端与支架主支的近端连接。In the present invention, preferably, the stent includes a stent main branch and 0-1 stent branches, and 0-1 stent branches extend outward from the stent main branch and are in fluid communication with the stent main branch. The distal end of the artificial blood vessel main branch is The end is connected to the proximal end of the main branch of the stent.

本发明优选为所述支架由记忆合金制成，进一步优选为所述支架由镍钛合金制成。In the present invention, preferably, the stent is made of memory alloy, and more preferably, the stent is made of nickel-titanium alloy.

本发明有益效果为：The beneficial effects of the present invention are:

本发明所述免缝合一体式分支覆膜支架血管利用压环的弹性，以夹紧封闭吻合口的方式而免除人工血管置换术中吻合口缝合的方法，达到止血和降低手术时间的效果。The suture-free integrated branched stent-graft vessel of the present invention utilizes the elasticity of the pressure ring to clamp and seal the anastomosis to avoid the method of anastomotic suturing in artificial blood vessel replacement, thereby achieving the effects of hemostasis and reducing operation time.

附图说明Description of drawings

本发明附图3幅，3 of the accompanying drawings of the present invention,

图1为实施例1所述免缝合一体式分支覆膜支架血管的结构示意图；1 is a schematic structural diagram of a suture-free integrated branched stent-graft vessel according to Embodiment 1;

图2为实施例1所述免缝合一体式分支覆膜支架血管的使用前状态图；2 is a state diagram of the suture-free integrated branch stent-graft vessel described in Example 1 before use;

图3为实施例1所述免缝合一体式分支覆膜支架血管的使用后状态图；3 is a state diagram after use of the suture-free integrated branch stent-graft vessel according to Embodiment 1;

其中，11、人工血管主支，12、人工血管分支，21、支架主支，22、支架分支，23、膜，31、固定件，32、盖膜，33、压环。Among them, 11, main branch of artificial blood vessel, 12, branch of artificial blood vessel, 21, main branch of stent, 22, branch of stent, 23, membrane, 31, fixing piece, 32, cap membrane, 33, pressure ring.

具体实施方式Detailed ways

下述非限制性实施例可以使本领域的普通技术人员更全面地理解本发明，但不以任何方式限制本发明。The following non-limiting examples may enable those of ordinary skill in the art to more fully understand the present invention, but do not limit the present invention in any way.

实施例1Example 1

一种免缝合一体式分支覆膜支架血管，如图1所示，所述免缝合一体式分支覆膜支架血管包括内层由聚四氟乙烯制成的人工血管、覆膜支架、压环组件；A suture-free integrated branch stent-graft vessel, as shown in Figure 1, the suture-free integrated branch stent-graft vessel includes an artificial blood vessel whose inner layer is made of polytetrafluoroethylene, a stent-graft, and a pressure ring assembly ;

所述人工血管包括人工血管主支11和2个人工血管分支12，2个所述人工血管分支12分别从人工血管主支11向外延伸并与人工血管主支11流体连通；The artificial blood vessel includes an artificial blood vesselmain branch 11 and two artificialblood vessel branches 12, and the two artificialblood vessel branches 12 respectively extend outward from the artificial blood vesselmain branch 11 and are in fluid communication with the artificial blood vesselmain branch 11;

所述覆膜支架包括由镍钛合金制成的支架、膜23；The covered stent includes a stent andmembrane 23 made of nickel-titanium alloy;

所述膜23缝合在支架内；Themembrane 23 is sutured in the stent;

所述支架包括支架主支21和1个支架分支22，所述支架分支22从支架主支21向外延伸并与支架主支21流体连通；The stent comprises a stentmain branch 21 and onestent branch 22, thestent branch 22 extends outward from the stentmain branch 21 and is in fluid communication with the stentmain branch 21;

所述人工血管主支11的远端与支架主支21的近端连接；The distal end of themain branch 11 of the artificial blood vessel is connected with the proximal end of themain branch 21 of the stent;

所述压环组件包括由镍钛合金制成的波形压环33、盖膜32、固定件31；The pressure ring assembly includes acorrugated pressure ring 33 made of nickel-titanium alloy, acover film 32, and a fixingmember 31;

所述人工血管主支11的外壁上设有固定件31；A fixingmember 31 is provided on the outer wall of themain branch 11 of the artificial blood vessel;

所述盖膜32置于支架主支21外，且所述盖膜32与固定件31连接；所述压环33一端活动连接在固定件31上，使所述压环33具有包装态和工作态，所述包装态为在外力作用下预先将压环33的另一端位移至人工血管主支11外壁并固定，所述工作态为去除压环33另一端在人工血管主支11外壁的固定后压环33另一端在形状记忆能力和超弹性的作用下恢复至支架主支21外壁，且所述压环33的内径小于支架主支21的外径。Thecover film 32 is placed outside themain support 21 of the bracket, and thecover film 32 is connected to the fixingmember 31; one end of thepressing ring 33 is movably connected to the fixingmember 31, so that thepressing ring 33 has a packaged state and works. The packing state is to move the other end of thepressure ring 33 to the outer wall of themain branch 11 of the artificial blood vessel and fix it in advance under the action of external force, and the working state is to remove the fixation of the other end of thepressure ring 33 on the outer wall of the main branch of theartificial blood vessel 11. The other end of therear pressure ring 33 is restored to the outer wall of the stentmain branch 21 under the action of shape memory capability and superelasticity, and the inner diameter of thepressure ring 33 is smaller than the outer diameter of the stentmain branch 21 .

实施例2Example 2

实施例1所述免缝合一体式分支覆膜支架血管的使用方法，所述使用方法包括如下步骤：The method of using the suture-free one-piece branched stent-graft vessel described in Embodiment 1, the method of using includes the following steps:

在进行主动脉弓置换术时，需要将患者主动脉弓的中段切除；When performing aortic arch replacement, the midsection of the patient's aortic arch needs to be resected;

如图2所示，将部分覆膜支架置入主动脉腔，覆膜支架将主动脉壁撑起；As shown in Figure 2, part of the stent-graft is placed into the aortic cavity, and the stent-graft supports the aortic wall;

如图3所示，去除压环33游离端的束缚，压环33的游离端由人工血管主支11外壁位移至自体血管外壁，由于压环33内径小于支架主支21的外径，在压环33向血管内的径向压力和支架主支21向血管外的径向支撑力同时作用下，自体血管与支架主支21紧密贴合，阻止血液渗出；As shown in FIG. 3 , the free end of thepressure ring 33 is removed, and the free end of thepressure ring 33 is displaced from the outer wall of the artificial blood vesselmain branch 11 to the outer wall of the autologous blood vessel. Since the inner diameter of thepressure ring 33 is smaller than the outer diameter of the stentmain branch 21 Under the simultaneous action of the radial pressure of 33 into the blood vessel and the radial support force of the stentmain branch 21 to the outside of the blood vessel, the autologous blood vessel closely fits the stentmain branch 21 to prevent blood leakage;

在压环33压紧自体血管后，进行后续人工血管缝合工作，完成术式后的主动脉弓如图3所示。After thecompression ring 33 compresses the autologous blood vessel, the subsequent artificial blood vessel suture work is performed, and the aortic arch after the operation is completed is shown in FIG. 3 .

Claims

1. The utility model provides a exempt from to sew up integrative formula branch tectorial membrane support blood vessel which characterized in that: the sewing-free integrated branch covered stent blood vessel comprises an artificial blood vessel, a covered stent and a pressure ring assembly;

the far end of the artificial blood vessel is connected with the near end of the covered stent;

the pressing ring assembly comprises a pressing ring and a fixing piece;

the outer wall of the artificial blood vessel is provided with a fixing piece;

the pressing ring is in a wave-shaped ring shape, the inner diameter of the pressing ring is smaller than the outer diameter of the covered stent, and the pressing ring is made of elastic metal or high polymer material;

one end of the pressing ring is movably connected to the fixing piece, so that the pressing ring can change the position of the pressing ring relative to the artificial blood vessel around the fixing piece.

2. The suture-free integrated branch stent-graft blood vessel of claim 1, wherein: the pressing ring assembly further comprises a cover film, the cover film is arranged outside the film covering support, and the cover film is connected with the fixing piece.

3. The suture-free integrated branch stent-graft blood vessel of claim 2, wherein: the artificial blood vessel comprises a main artificial blood vessel branch and 0-4 artificial blood vessel branches, wherein the 0-4 artificial blood vessel branches respectively extend outwards from the main artificial blood vessel branch and are communicated with the main artificial blood vessel branch in a fluid mode, and the far end of the main artificial blood vessel branch is connected with the near end of the covered stent.

4. The suture-free integrated branch stent-graft blood vessel of claim 3, wherein: the inner layer of the artificial blood vessel is made of terylene or polytetrafluoroethylene.

5. The suture-free integrated branch stent-graft blood vessel of claim 4, wherein: the film-coated bracket comprises a bracket and a film, wherein the film is fixed on the bracket.

6. The suture-free integrated branch stent-graft blood vessel of claim 5, wherein: the stent comprises a main stent branch and 0-1 stent branches, wherein the 0-1 stent branches extend outwards from the main stent branch and are in fluid communication with the main stent branch, and the distal end of the main artificial blood vessel branch is connected with the proximal end of the main stent branch.

7. The suture-free integrated branch stent-graft blood vessel of claim 6, wherein: the stent is made of memory alloy.