CN115462934B - Detachable venous valve - Google Patents
Detachable venous valve Download PDFInfo
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- CN115462934B CN115462934B CN202211222959.0A CN202211222959A CN115462934B CN 115462934 B CN115462934 B CN 115462934B CN 202211222959 A CN202211222959 A CN 202211222959A CN 115462934 B CN115462934 B CN 115462934B
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- valve
- metal wire
- edge
- bracket
- elastic groove
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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
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2475—Venous valves
Abstract
The invention discloses a detachable venous valve, which relates to the technical field of implantable medical devices and comprises a bracket and a valve arranged in the bracket, wherein the bracket is used for being attached and supported on the inner wall of a blood vessel, the valve is a pocket-shaped valve, one part of the edge of the pocket end of the valve is a fixed edge, the other part of the edge is a free edge, the fixed edge can be detachably connected to the inner wall of the bracket, the free edge can be freely switched between an open state and a closed state under the action of intravascular pressure, the closed state is a state when the free edge is attached to the inner wall of the bracket, and the open state is a state when the free edge moves close to the fixed edge to enable an overcurrent gap to exist between the free edge and the inner wall of the bracket. The detachable venous valve provided by the invention can reduce the complexity of the operation process and the treatment cost of patients.
Description
Technical Field
The invention relates to the technical field of implantable medical devices, in particular to a detachable venous valve.
Background
Venous valves exist within the venous blood vessels of mammals, which prevent blood back flow during circulation. When the venous valve is damaged and cannot exert its backflow preventing function, blood flows back in the veins and stagnates in the legs, and the blood stagnates and causes vein dilation, thereby causing further failure of the venous valve and causing chronic venous insufficiency of the human body.
In the prior art, an implantable venous valve is used for replacing an original damaged valve of a patient, the existing implantable venous valve is generally formed by fixedly connecting a prosthetic valve in a vascular stent, and then implanting the whole structure into a venous vessel to simulate the function of a human valve. However, when the artificial valve is not enough to replace the original valve to play the backflow prevention function after long-time use, the vascular stent and the artificial valve are required to be taken out together, then the whole structure of the new vascular stent and the artificial valve is implanted, on one hand, the whole structure of the implanted vascular stent and the artificial valve is required to be taken out and then implanted, the operation process is complex, on the other hand, the undamaged vascular stent is required to be implanted with new vascular stents after being taken out and is treated by medical wastes, and the treatment cost of patients is high.
Disclosure of Invention
The invention aims to provide a detachable venous valve so as to solve the problems in the prior art, reduce the complexity of an operation process and reduce the treatment cost of a patient.
In order to achieve the above object, the present invention provides the following solutions:
the invention provides a detachable venous valve, which comprises a bracket and a valve arranged in the bracket, wherein the bracket is used for being attached and supported on the inner wall of a blood vessel, the valve is a pocket-shaped valve, one part of the edge of the pocket end of the valve is a fixed edge, the other part of the edge is a free edge, the fixed edge can be detachably connected to the inner wall of the bracket, the free edge can be freely switched between an open state and a closed state under the action of intravascular pressure, the closed state is a state when the free edge moves away from the fixed edge to be attached to the inner wall of the bracket, and the open state is a state when the free edge moves close to the fixed edge to enable an overcurrent gap to exist between the free edge and the inner wall of the bracket.
Preferably, the fixing edge is connected with a sub-buckle, the inner wall of the bracket is connected with a female buckle, and the sub-buckle and the female buckle can be detachably connected.
Preferably, the sub-buckle comprises a first metal wire, the trend of the first metal wire is consistent with that of the fixed edge, the female buckle comprises a first elastic groove which is consistent with that of the first metal wire, the first elastic groove is connected to the inner wall of the bracket, and under the elastic action of the first elastic groove, the first metal wire can be clamped in or taken out of the first elastic groove.
Preferably, the free edge is connected with a movable metal wire, the trend of the movable metal wire is consistent with that of the free edge, two ends of the movable metal wire are respectively and rotatably connected with two ends of the first metal wire, and the rotation axis of the movable metal wire is parallel to the plane where the inlet end of the valve is located.
Preferably, the valve between the fixed edge and the stomal bottom of the valve is a fitting valve part, the fitting valve part is fitted on the inner wall of the bracket, a second metal wire is connected to the side edge, connected with the fixed edge, of the fitting valve part, the second metal wire is consistent with the side edge trend of the fitting valve part, a second elastic groove corresponding to the second metal wire is connected to the inner wall of the bracket, and under the elastic action of the second elastic groove, the second metal wire can be clamped in or taken out of the second elastic groove; the valve on the other side opposite the conformable valve portion is a free valve portion.
Preferably, the first metal wire is fixedly connected with the fixed edge in a sewing manner, the movable metal wire is fixedly connected with the free edge in a sewing manner, the second metal wire is fixedly connected with the side edge of the attached valve part in a sewing manner, the first elastic groove is fixedly connected with the bracket in a sewing manner, and the second elastic groove is fixedly connected with the bracket in a sewing manner.
Preferably, the first wire, the second wire and the movable wire are biocompatible wires, and the first elastic groove and the second elastic groove are biocompatible metal elastic grooves.
Preferably, the first wire, the second wire and the movable wire are nitinol wires or stainless steel wires.
Preferably, the valve is a biomaterial valve or a polymer valve.
Compared with the prior art, the invention has the following technical effects:
the detachable venous valve provided by the invention has the advantages that the fixed edge can be detachably connected to the inner wall of the bracket, the free edge can be freely switched between the open state and the closed state under the action of intravascular pressure, the human valve is simulated, blood backflow can be prevented during circulation, and as the valve is detachably connected with the bracket, when the backflow prevention function of the valve fails, the valve is only required to be detached from the bracket and taken out, then a new valve is implanted and installed on the original bracket, the valve is not required to be taken out together with the bracket, the complexity of an operation process is reduced, the risk factor of the newly implanted bracket is removed, the original bracket can be continuously used, and the treatment cost of a patient can be reduced to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a detachable venous valve in an embodiment of the invention;
FIG. 2 is a schematic view of the stent and valve of FIG. 1 when not mounted together;
FIG. 3 is a schematic view of a stent and valve according to another embodiment of the present invention when not mounted together;
FIG. 4 is a schematic view of the rotation of the free edge of the valve of the present invention with the movable wire attached thereto;
in the figure: 100-detachable venous valve, 1-stent, 2-valve, 3-fixed edge, 4-free edge, 5-sub-clip, 6-female clip, 7-first wire, 8-first elastic groove, 9-conformable valve portion, 10-second wire, 11-second elastic groove, 12-movable wire, 13-free valve portion, 14-axis of rotation.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a detachable venous valve, which solves the problems in the prior art, reduces the complexity of an operation process and reduces the treatment cost of a patient.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in fig. 1-4, the present embodiment provides a detachable venous valve 100, which includes a stent 1 and a valve 2 disposed in the stent 1, wherein the stent 1 is used for being attached to and supported on an inner wall of a blood vessel, the valve 2 is a pocket-shaped valve, a part of an edge of an inlet end of the valve 2 is a fixed edge 3, the other part is a free edge 4, the fixed edge 3 can be detachably connected to the inner wall of the stent 1, the free edge 4 can be freely switched between an open state and a closed state under the action of intravascular pressure, the closed state is a state when the free edge 4 is moved away from the fixed edge 3 to be attached to the inner wall of the stent 1, and the open state is a state when the free edge 4 is moved close to the fixed edge 3 so that an overcurrent gap exists between the free edge 4 and the inner wall of the stent 1.
The valve 2 and the support 1 are arranged to be of a detachable connection structure, when the backflow prevention function of the valve 2 fails, the valve 2 is only required to be detached from the support 1 and taken out, then a new valve 2 is implanted and is installed on the original support 1, the valve 2 is not required to be taken out together with the support 1, the complexity of an operation process is reduced, risk factors of the newly implanted support 1 are removed, the original support 1 can be continuously used, and the treatment cost of a patient can be reduced to a certain extent.
In some embodiments, the fixing edge 3 is connected with a sub-buckle 5, the inner wall of the bracket 1 is connected with a female buckle 6, and the sub-buckle 5 and the female buckle 6 can be detachably connected. Through the detachable connection structure of the snap fastener, the valve is convenient to install and detach, and the convenience of implanting and installing the valve 2 is improved.
In some embodiments, the sub-buckle 5 comprises a first metal wire 7, the trend of the first metal wire 7 is consistent with that of the fixed edge 3, the female buckle 6 comprises a first elastic groove 8 consistent with that of the first metal wire 7, the first elastic groove 8 is connected on the inner wall of the bracket 1, and under the elastic action of the first elastic groove 8, the first metal wire 7 can be clamped in the first elastic groove 8 or taken out from the first elastic groove 8. The structure is simple, the manufacture is convenient, and the first metal wire 7 is easy to be clamped in the first elastic groove 8 or easy to be taken out from the first elastic groove 8 by utilizing the elastic deformation performance of the first elastic groove 8. Preferably, the first wire 7 is semi-circular.
In some embodiments, the valve 2 between the fixed edge 3 and the stomal bottom of the valve 2 is a fitting valve part 9, the fitting valve part 9 is fitted on the inner wall of the bracket 1, the side edge of the fitting valve part 9 connected with the fixed edge 3 is connected with a second metal wire 10, the second metal wire 10 is consistent with the side edge trend of the fitting valve part 9, the inner wall of the bracket 1 is connected with a second elastic groove 11 corresponding to the second metal wire 10, and the second metal wire 10 can be clamped in the second elastic groove 11 or taken out from the second elastic groove 11 under the elastic action of the second elastic groove 11; the valve 2 on the other side opposite the conformable valve portion 9 is a free valve portion 13. When blood flows forward, the free valve part 13 opposite to the attached valve part 9 in the valve 2 is pressed, so that the valve 2 is in an open state, and the blood can flow forward; when blood is to flow back, the free valve portion 13 is opened by the blood, the valve 2 is switched to the closed state, and the blood flows into the pocket of the valve 2, so that the blood is blocked and prevented from flowing back. The arrangement of the second metal wire 10 and the second elastic groove 11 facilitates the disassembly and clamping of the valve 2 and the manufacturing.
In some embodiments, the first wire 7 is fixedly connected with the fixed edge 3 in a sewing manner, the second wire 10 is fixedly connected with the side edge of the fitting valve portion 9 in a sewing manner, the first elastic groove 8 is fixedly connected with the bracket 1 in a sewing manner, and the second elastic groove 11 is fixedly connected with the bracket 1 in a sewing manner, so that the connection is facilitated.
In some embodiments, the first wire 7 and the second wire 10 are both biocompatible wires, and the first spring groove 8 and the second spring groove 11 are both biocompatible metal spring grooves. Ensuring the biocompatibility with human body and avoiding rejection reaction.
In some embodiments, the first wire 7 and the second wire 10 are nitinol wires or stainless steel wires.
In some embodiments, the valve 2 is a biomaterial valve or a polymer valve. Biological material valves such as bovine pericardium valve, and polymer material valves such as e-PTFE, PU, etc.
In some embodiments, the free edge 4 is connected with a movable wire 12, the direction of the movable wire 12 is identical to that of the free edge 4, two ends of the movable wire 12 are respectively connected with two ends of the first wire 7 in a rotating way, and the rotating axis 14 of the movable wire is parallel to the plane of the inlet end of the valve 2. When blood flows forward, the free valve portion 13 is pressed, and the free edge 4 is rotated toward the fixed edge 3, so that an overflow gap through which blood flows is formed with the inner wall of the stent 1. Preferably, the movable wire 12 is semi-circular.
In some embodiments, the movable wire 12 is fixedly connected to the free edge 4 by stitching, which facilitates the connection.
In some embodiments, the moving wire 12 is a biocompatible wire that ensures biocompatibility with the human body without rejection reactions.
In some embodiments, the movable wire 12 is a nitinol wire or a stainless steel wire.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (6)
1. A detachable venous valve, characterized in that: the device comprises a bracket and a valve arranged in the bracket, wherein the bracket is used for being attached and supported on the inner wall of a blood vessel, the valve is a pocket-shaped valve, one part of the edge of the inlet end of the valve is a fixed edge, the other part of the edge is a free edge, the fixed edge can be detachably connected to the inner wall of the bracket, the free edge can be freely switched between an open state and a closed state under the action of pressure in the blood vessel, the closed state is a state when the free edge moves away from the fixed edge to be attached to the inner wall of the bracket, and the open state is a state when the free edge moves close to the fixed edge to enable the free edge and the inner wall of the bracket to have an overcurrent gap;
the fixed edge is connected with a child buckle, the inner wall of the bracket is connected with a female buckle, and the child buckle and the female buckle can be detachably connected; the primary buckle comprises a first metal wire, the trend of the first metal wire is consistent with that of the fixed edge, the primary buckle comprises a first elastic groove which is consistent with that of the first metal wire, the first elastic groove is connected to the inner wall of the bracket, and under the elastic action of the first elastic groove, the first metal wire can be clamped in the first elastic groove or taken out from the first elastic groove; the free edge is connected with a movable metal wire, the trend of the movable metal wire is consistent with that of the free edge, two ends of the movable metal wire are respectively and rotatably connected with two ends of the first metal wire, and the rotation axis of the movable metal wire is parallel to the plane where the inlet end of the valve is located.
2. The detachable venous valve of claim 1, wherein: the valve between the fixed edge and the stomal bottom of the valve is a fitting valve part, the fitting valve part is fitted on the inner wall of the bracket, a second metal wire is connected with the side edge of the fitting valve part connected with the fixed edge, the second metal wire is consistent with the side edge trend of the fitting valve part, a second elastic groove corresponding to the second metal wire is connected on the inner wall of the bracket, and the second metal wire can be clamped in or taken out from the second elastic groove under the elastic action of the second elastic groove; the valve on the other side opposite the conformable valve portion is a free valve portion.
3. The detachable venous valve of claim 2, wherein: the first metal wire is fixedly connected with the fixed edge in a sewing mode, the movable metal wire is fixedly connected with the free edge in a sewing mode, the second metal wire is fixedly connected with the side edge of the attached valve portion in a sewing mode, the first elastic groove is fixedly connected with the support in a sewing mode, and the second elastic groove is fixedly connected with the support in a sewing mode.
4. The detachable venous valve of claim 2, wherein: the first metal wire, the second metal wire and the movable metal wire are biocompatible metal wires, and the first elastic groove and the second elastic groove are biocompatible metal elastic grooves.
5. The detachable venous valve of claim 4, wherein: the first metal wire, the second metal wire and the movable metal wire are nickel-titanium alloy metal wires or stainless steel metal wires.
6. The detachable venous valve of claim 1, wherein: the valve is a biological material valve or a polymer material valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211222959.0A CN115462934B (en) | 2022-10-08 | 2022-10-08 | Detachable venous valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211222959.0A CN115462934B (en) | 2022-10-08 | 2022-10-08 | Detachable venous valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115462934A CN115462934A (en) | 2022-12-13 |
| CN115462934B true CN115462934B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211222959.0A Active CN115462934B (en) | 2022-10-08 | 2022-10-08 | Detachable venous valve |
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Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
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| IT1247037B (en) * | 1991-06-25 | 1994-12-12 | Sante Camilli | ARTIFICIAL VENOUS VALVE |
| RU2923U1 (en) * | 1995-08-16 | 1996-10-16 | Научный центр сердечно-сосудистой хирургии РАМН | HEART VALVE BIOPROTHESIS |
| US7452371B2 (en) * | 1999-06-02 | 2008-11-18 | Cook Incorporated | Implantable vascular device |
| US6299637B1 (en) * | 1999-08-20 | 2001-10-09 | Samuel M. Shaolian | Transluminally implantable venous valve |
| US7125418B2 (en) * | 2002-04-16 | 2006-10-24 | The International Heart Institute Of Montana Foundation | Sigmoid valve and method for its percutaneous implantation |
| US20040122515A1 (en) * | 2002-11-21 | 2004-06-24 | Xi Chu | Prosthetic valves and methods of manufacturing |
| WO2007016251A2 (en) * | 2005-07-28 | 2007-02-08 | Cook Incorporated | Implantable thromboresistant valve |
| US7503928B2 (en) * | 2005-10-21 | 2009-03-17 | Cook Biotech Incorporated | Artificial valve with center leaflet attachment |
| US7811316B2 (en) * | 2006-05-25 | 2010-10-12 | Deep Vein Medical, Inc. | Device for regulating blood flow |
| US8628566B2 (en) * | 2008-01-24 | 2014-01-14 | Medtronic, Inc. | Stents for prosthetic heart valves |
| DE602008006670D1 (en) * | 2008-03-27 | 2011-06-16 | Ab Medica Spa | Valve prosthesis for implantation in body vessels |
| WO2010011878A2 (en) * | 2008-07-24 | 2010-01-28 | Cook Incorporated | Valve device with biased leaflets |
| US8556960B2 (en) * | 2008-11-06 | 2013-10-15 | Cook Medical Technologies Llc | Frameless vascular valve |
| CN101444441B (en) * | 2008-12-31 | 2011-06-29 | 南京医科大学第一附属医院 | Support type artificial venous blood vessel with valve |
| EP2405863B1 (en) * | 2009-02-24 | 2019-11-13 | Cook Medical Technologies LLC | Low profile support frame and related intraluminal medical devices |
| US9833314B2 (en) * | 2010-04-16 | 2017-12-05 | Abiomed, Inc. | Percutaneous valve deployment |
| US20130304196A1 (en) * | 2012-05-08 | 2013-11-14 | Medtronic Vascular, Inc. | Prosthetic venous valve having leaflets forming a scalloped commissure |
| CN103536376B (en) * | 2012-07-10 | 2018-05-04 | 李莉 | It is a kind of that the intervention biovalve for replacing leaflet is repeated by Minimally Invasive Surgery |
| CN103536377B (en) * | 2012-07-17 | 2018-05-04 | 李莉 | It is a kind of that the heart biology valve for replacing leaflet is repeated by Minimally Invasive Surgery |
| CN203042411U (en) * | 2012-12-03 | 2013-07-10 | 浙江科惠医疗器械有限公司 | Up-and-down type vertebral column fixing cross-linkage device with elastic structure |
| CN211381982U (en) * | 2019-07-04 | 2020-09-01 | 罗喻翔 | Patch placer |
| CN211704562U (en) * | 2019-12-20 | 2020-10-20 | 无锡安之卓医疗机器人有限公司 | Elastic clamping and fixing structure of capsule endoscope |
| CN215839713U (en) * | 2021-09-14 | 2022-02-18 | 陆天依 | Heart valve replacement device |
| CN113967042A (en) * | 2021-10-27 | 2022-01-25 | 邹承伟 | Automatic implantation device of sewing-free for artificial mitral valve for cardiology |
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2022
- 2022-10-08 CN CN202211222959.0A patent/CN115462934B/en active Active
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| CN115462934A (en) | 2022-12-13 |
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