CN109223250B - Suture-free integrated branch covered stent blood vessel - Google Patents
Suture-free integrated branch covered stent blood vessel Download PDFInfo
- Publication number
- CN109223250B CN109223250B CN201811192271.6A CN201811192271A CN109223250B CN 109223250 B CN109223250 B CN 109223250B CN 201811192271 A CN201811192271 A CN 201811192271A CN 109223250 B CN109223250 B CN 109223250B
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- China
- Prior art keywords
- blood vessel
- stent
- branch
- artificial blood
- pressing ring
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0014—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol
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
Technical Field
The invention relates to a sewing-free integrated branch covered stent blood vessel, belonging to the technical field of medical instruments.
Background
Artificial blood vessel-tectorial membrane stent transplantation is an important means for treating aortic dissection tumor and other large blood vessel diseases. After the artificial blood vessel-tectorial membrane stent is transplanted, the problem of blood leakage of an anastomotic stoma pinhole often exists due to the pressure effect of blood flow circulation in a blood vessel, in addition, the time for blood vessel anastomosis is long, the cerebral ischemia time is also increased, and the problems are the main reasons for the occurrence of postoperative complications and the increase of death. Therefore, anastomosis hemostasis is always an urgent problem to be solved in artificial blood vessel-stent graft, and a more effective, feasible and simple way is needed to achieve the purpose of anastomosis hemostasis.
Disclosure of Invention
The invention utilizes the elasticity of the pressure ring to seal the anastomotic stoma in a clamping way, thereby solving the problems.
The invention provides a sewing-free integrated type branch covered stent blood vessel which comprises an artificial blood vessel, a covered stent and a compression ring assembly, wherein the artificial blood vessel is provided with a plurality of branches; 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.
According to the invention, the pressing ring is preferably in the shape of a wave-shaped ring.
According to the invention, the inner diameter of the compression ring is preferably smaller than the outer diameter of the covered stent.
According to the invention, the pressing ring is preferably made of elastic metal or high polymer material, and further preferably made of nickel-titanium alloy, and the nickel-titanium alloy has shape memory capacity and super elasticity.
The pressing ring assembly preferably 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.
The artificial blood vessel comprises an artificial blood vessel main branch and 0-4 artificial blood vessel branches, wherein 0-4 artificial blood vessel branches respectively extend outwards from the artificial blood vessel main branch and are communicated with the artificial blood vessel main branch in a fluid mode, and the far end of the artificial blood vessel main branch is connected with the near end of the covered stent.
According to the invention, the inner layer of the artificial blood vessel is preferably made of terylene or polytetrafluoroethylene.
The invention preferably relates to the covered stent which comprises a stent and a membrane, wherein the membrane is fixed on the stent.
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.
The invention preferably makes the stent made of memory alloy, and more preferably makes the stent made of nickel titanium alloy.
The invention has the beneficial effects that:
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.
Drawings
In the figure 3 of the attached drawings of the invention,
fig. 1 is a schematic structural view of a suture-free integrated branch stent graft in example 1;
FIG. 2 is a pre-use state diagram of the suture-free integrated branch stent graft of example 1;
FIG. 3 is a diagram illustrating a state of the suture-free one-piece branch stent graft in example 1 after use;
the artificial blood vessel stent comprises a main artificial blood vessel branch 11, a main artificial blood vessel branch 12, a branch artificial blood vessel 21, a main stent branch 22, a branch stent 23, a membrane 31, a fixing piece 32, a cover membrane 33 and a compression ring.
Detailed Description
The following non-limiting examples are presented to enable those of ordinary skill in the art to more fully understand the present invention and are not intended to limit the invention in any way.
Example 1
A sewing-free integrated branch covered stent blood vessel is shown in figure 1, and comprises an artificial blood vessel with an inner layer made of polytetrafluoroethylene, a covered stent and a compression ring assembly;
the artificial blood vessel comprises a main artificial blood vessel branch 11 and 2 artificial blood vessel branches 12, wherein the 2 artificial blood vessel branches 12 respectively extend outwards from the main artificial blood vessel branch 11 and are communicated with the main artificial blood vessel branch 11 in a fluid mode;
the covered stent comprises a stent made of nickel-titanium alloy and a membrane 23;
the membrane 23 is sewn inside the stent;
the stent comprises a stent main leg 21 and 1 stent branch 22, wherein the stent branch 22 extends outwards from the stent main leg 21 and is communicated with the stent main leg 21 in fluid;
the distal end of the artificial blood vessel main branch 11 is connected with the proximal end of the stent main branch 21;
the pressing ring assembly comprises a corrugated pressing ring 33 made of nickel-titanium alloy, a cover film 32 and a fixing piece 31;
the outer wall of the artificial blood vessel main branch 11 is provided with a fixing piece 31;
the cover film 32 is arranged outside the support main support 21, and the cover film 32 is connected with the fixing piece 31; clamping ring 33 one end swing joint makes on mounting 31 clamping ring 33 has packing attitude and working state, the packing attitude is for shifting the other end of clamping ring 33 to artificial blood vessel owner's wall and fixed under the exogenic action in advance, the working state is for getting rid of the clamping ring 33 other end and recovering to support owner's 21 outer wall under shape memory ability and super elastic effect after the fixed of artificial blood vessel owner's wall, just the internal diameter of clamping ring 33 is less than the external diameter of support owner's 21.
Example 2
The use method of the suture-free integrated branch covered stent blood vessel in the embodiment 1 comprises the following steps:
when the aortic arch replacement is carried out, the middle section of the aortic arch of a patient needs to be cut off;
as shown in FIG. 2, a portion of the stent graft is placed in the aortic lumen, and the stent graft props up the aortic wall;
as shown in fig. 3, the free end of the pressing ring 33 is removed, the free end of the pressing ring 33 is displaced from the outer wall of the main artificial blood vessel 11 to the outer wall of the autologous blood vessel, and because the inner diameter of the pressing ring 33 is smaller than the outer diameter of the main stent support 21, the autologous blood vessel is tightly attached to the main stent support 21 under the simultaneous action of the radial pressure of the pressing ring 33 in the blood vessel and the radial supporting force of the main stent support 21 outside the blood vessel, so as to prevent the blood from oozing out;
after the compression ring 33 compresses the autologous blood vessel, the subsequent artificial blood vessel suturing work is performed, and the operated aortic arch is as shown in fig. 3.
Claims (7)
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.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192271.6A CN109223250B (en) | 2018-10-12 | 2018-10-12 | Suture-free integrated branch covered stent blood vessel |
| PCT/CN2019/110460 WO2020073972A1 (en) | 2018-10-12 | 2019-10-10 | Suture-free integrated branched film-covered stent blood vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811192271.6A CN109223250B (en) | 2018-10-12 | 2018-10-12 | Suture-free integrated branch covered stent blood vessel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109223250A CN109223250A (en) | 2019-01-18 |
| CN109223250B true CN109223250B (en) | 2020-12-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811192271.6A Active CN109223250B (en) | 2018-10-12 | 2018-10-12 | Suture-free integrated branch covered stent blood vessel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109223250B (en) |
| WO (1) | WO2020073972A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109223250B (en) * | 2018-10-12 | 2020-12-29 | 大连科万维医疗科技有限公司 | Suture-free integrated branch covered stent blood vessel |
| CN111358593A (en) * | 2020-03-19 | 2020-07-03 | 江苏百优达生命科技有限公司 | Quick-connection type thoracotomy vascular stent and conveying system |
| CN112022431B (en) * | 2020-09-07 | 2021-09-07 | 浙江大学 | Integrated stent artificial blood vessel with assembled suture-free branches and application thereof |
| CN113425474A (en) * | 2021-06-09 | 2021-09-24 | 上海畅迪医疗科技有限公司 | Blood vessel connecting device and preparation method thereof |
| CN113558708A (en) * | 2021-09-22 | 2021-10-29 | 北京华脉泰科医疗器械股份有限公司 | Bow covered stent and bow stent component |
| CN115517811B (en) * | 2022-11-01 | 2023-03-31 | 北京华脉泰科医疗器械股份有限公司 | Integrated stent artificial blood vessel and artificial blood vessel replacement kit |
| CN117159219B (en) * | 2023-11-02 | 2024-03-08 | 北京华脉泰科医疗器械股份有限公司 | Vascular prosthesis connection device and vascular prosthesis connection system |
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| US7147661B2 (en) * | 2001-12-20 | 2006-12-12 | Boston Scientific Santa Rosa Corp. | Radially expandable stent |
| US20050143801A1 (en) * | 2002-10-05 | 2005-06-30 | Aboul-Hosn Walid N. | Systems and methods for overcoming or preventing vascular flow restrictions |
| EP1753367A4 (en) * | 2004-03-11 | 2011-10-12 | Trivascular Inc | Modular endovascular graft |
| CN2683036Y (en) * | 2004-04-02 | 2005-03-09 | 姬尚义 | Surgical articulator for coronary artery anastomosis |
| WO2007030892A1 (en) * | 2005-09-15 | 2007-03-22 | Avastra Ltd | Method of tissue repair iii |
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| CN109223250B (en) * | 2018-10-12 | 2020-12-29 | 大连科万维医疗科技有限公司 | Suture-free integrated branch covered stent blood vessel |
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2018
- 2018-10-12 CN CN201811192271.6A patent/CN109223250B/en active Active
-
2019
- 2019-10-10 WO PCT/CN2019/110460 patent/WO2020073972A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020073972A1 (en) | 2020-04-16 |
| CN109223250A (en) | 2019-01-18 |
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