CN216168102U - Clamping assembly for mitral valve repair clamp - Google Patents
Clamping assembly for mitral valve repair clamp Download PDFInfo
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- CN216168102U CN216168102U CN202122453975.8U CN202122453975U CN216168102U CN 216168102 U CN216168102 U CN 216168102U CN 202122453975 U CN202122453975 U CN 202122453975U CN 216168102 U CN216168102 U CN 216168102U
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- clamp
- clamp body
- mitral valve
- valve repair
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Abstract
The utility model belongs to the technical field of medical instruments, and particularly relates to a clamping assembly. A snap-fit assembly for a mitral valve repair clamp, comprising: the conveying structure is provided with an inner core rod matched with the connecting rod of the clamping structure; the inner core rod is provided with: at least one conveying elastic piece which can be clamped and connected with the connecting rod; the connecting rod includes: the far end of the first connecting section is connected with the clamping structure; and the far end of the second connecting section is connected with the near end of the first connecting section, at least one clamp body connecting part is arranged on the outer side wall, and the clamp body connecting part can be clamped and connected with the conveying elastic piece. The utility model changes the connection mode of the inner core rod and the connecting rod from threaded connection into clamping connection of the conveying elastic piece, thereby not only avoiding incomplete matching, but also being convenient for installation and release.
Description
Technical Field
The utility model belongs to the technical field of medical instruments, and particularly relates to a clamping assembly.
Background
For cardiac valve insufficiency, in particular atrioventricular valve insufficiency or regurgitation, the current treatment methods mainly comprise valvuloplasty, artificial mechanical valve replacement and biological valve replacement. With the development of cardiac surgical techniques, annuloplasty has become one of the major means of treating heart valve disease. Compared with the replacement of artificial mechanical valves, the valvuloplasty does not need anticoagulation, avoids complications caused by taking anticoagulant drugs such as warfarin and the like, and has good forming effect and is beneficial to the recovery of cardiac function. Although the anticoagulation time is short after the replacement of the biological valve, the short service life is a main obstacle limiting the wide application of the biological valve.
Application No. 201920111620.0, utility model name: a patent of a valve repair clip discloses a transapical mitral valve repair clip which is simple in structure and convenient to operate, but in practical application, the following problems occur:
1. the inner core rod of the conveying structure is in threaded connection with the connecting rod of the first clamp body, and when the first clamp body is screwed on the inner core rod, the outer periphery of the connecting rod cannot be well matched with the inner core rod to clamp due to the fact that the inner core rod and the connecting rod are of non-cylindrical structures, and conveying difficulty is caused.
2. The first clamp body and the outer clamp are usually made of self-expanding materials, such as memory alloy, and are not suitable for being internally threaded on the connecting rod due to small size.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems of difficult conveying and separation caused by the conditions of complex process, uncomfortable matching and the like in the manner that the first clamp body of the existing mitral valve repair clamp is in threaded connection with the connecting rod of the conveying structure, and aims to provide a clamping assembly for the mitral valve repair clamp.
A snap-fit assembly for a mitral valve repair clamp, comprising: the conveying structure is provided with an inner core rod matched with the connecting rod of the clamping structure;
the inner core rod is provided with:
at least one conveying elastic piece which can be clamped and connected with the connecting rod;
the connecting rod includes:
the far end of the first connecting section is connected with the clamping structure;
and the far end of the second connecting section is connected with the near end of the first connecting section, at least one clamp body connecting part is arranged on the outer side wall, and the clamp body connecting part is connected with the conveying elastic part in a clamping manner.
After the conveying elastic piece is connected with the connecting rod in a clamping mode, the conveying structure pushes the clamping structure to a far-end preset position through the inner core rod, and the conveying elastic piece is separated from the connecting rod after being driven to deform.
The width of at least one side of the cross section of the second connecting section is smaller than that of the corresponding side of the cross section of the first connecting section.
The outer side wall of the clamp body connecting part is flush with or recessed in the outer side wall of the first connecting section.
The clamp body connecting part is a first connecting bulge or is provided with a first connecting groove;
and a second connecting groove or a second connecting bulge is correspondingly arranged on the conveying elastic piece.
The first connecting section and the second connecting section are of an integrated structure which is integrally formed;
the whole connecting rod is of a cylindrical structure or an elliptic cylindrical structure, the upper portion of the connecting rod is the first connecting section, and notches are respectively cut from the bottom surface to the far end of the two sides of the connecting rod to form the second connecting section.
The clamping structure comprises a first clamp body and a second clamp body which is matched with the first clamp body to clamp the valve leaf;
the first clamp body and the connecting rod are of an integral structure which is made of memory alloy materials through integral forming.
A connecting ring is arranged at the near end of the second clamp body and sleeved outside the connecting rod;
the second clamp body and the connecting ring are of an integral structure which is made of memory alloy materials through integral forming.
The second connecting section of the connecting rod extends out of the proximal end of the connecting ring.
The conveying elastic piece is an elastic clamping piece, the near end of the elastic clamping piece is fixed with the inner core rod, and the far end of the elastic clamping piece is connected with the connecting part of the clamp body in a clamping manner;
the elastic clamping piece is provided with a second stay wire, and the second stay wire drives the elastic clamping piece to be clamped or far away from the clamp body connecting part.
The elastic clamping piece is provided with a stay wire guide groove along the axial direction, and the second stay wire is clamped in the stay wire guide groove and extends to the near end of the conveying structure through the guidance of the stay wire guide groove.
The elastic clamping piece is made of memory alloy, and is attached to the outer side wall of the inner core rod and extends along the axial direction of the inner core rod when external force is not applied.
The positive progress effects of the utility model are as follows: according to the utility model, the clamping component for the mitral valve repair clamp is adopted, the connection mode of the inner core rod and the connecting rod is changed from threaded connection into clamping connection of the conveying elastic part, threads do not need to be arranged in the connecting rod, incomplete matching is avoided, and the installation and release are convenient. Under the condition that the axial directions of the conveying elastic piece and the inner core rod are kept consistent, the second pull wire arranged on the conveying elastic piece is used for tensioning the second pull wire when the clamping structure needs to be released, and the conveying structure is separated from the clamping structure.
Drawings
FIG. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a partially exploded view of FIG. 1;
FIG. 3 is another schematic structural view of FIG. 2;
FIG. 4 is a schematic view of a first clip body according to the present invention;
FIG. 5 is a schematic view of a second clip body according to the present invention;
FIG. 6 is a schematic structural view of a conveying structure according to the present invention;
fig. 7 is another schematic structural view of fig. 6.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific drawings.
Referring to fig. 1 to 7, a snap-fit assembly for a mitral valve repair clamp includes a clamping structure 100 and a delivery structure 300. The clamping structure 100 has a first clamp body 110, a second clamp body 120, a connecting rod 116, and a connecting ring 124 that cooperate to clamp the native valve leaflets. The delivery structure 300 has a core rod 310 that cooperates with the connecting rod 116 of the sandwich structure, and the delivery structure 300 pushes and releases the sandwich structure 100 distally through the core rod 310.
Referring to fig. 4, a connecting rod 116 is disposed at a proximal end of the first clip body 110, and the first clip body 110 and the connecting rod 116 are preferably integrally formed by using a memory alloy material.
The connecting rod 116 includes a first connecting segment 1161 and a second connecting segment 1162, a distal end of the first connecting segment 1161 is connected to the first clip body 110, a distal end of the second connecting segment 1162 is connected to a proximal end of the first connecting segment 1161, and at least one clip body connecting portion 1163 is disposed on an outer sidewall of the second connecting segment 1162. At least one side of the cross-section of the second connecting section 1162 has a width smaller than that of the corresponding side of the cross-section of the first connecting section 1161. So that the clip connecting portion 1163 on the second connecting section 1162 does not affect the fit between the first clip body 110 and the second clip body 120. Specifically, a cut may be cut out in the second connection section 1162, and the clip connecting portion 1163 may be disposed in the cut. Preferably, an outer sidewall of the clip body connecting portion 1163 is flush with or recessed within an outer sidewall of the first connecting section 1161. The clip connecting portion 1163 is a first connecting protrusion or a first connecting groove. The first and second connection segments 1161 and 1162 are preferably integrally formed as a unitary structure.
Referring to fig. 1 to 4, the connecting rod 116 has an overall cylindrical structure or an elliptical cylindrical structure, the upper portion of the connecting rod 116 is a first connecting section 1161, and a second connecting section 1162 is formed by cutting from the bottom surface to the distal end at both sides of the connecting rod 116. Two clamp body connecting parts 1163 are symmetrically arranged on the second connecting section 1162, and the clamp body connecting parts 1163 are first connecting protrusions.
Referring to fig. 5, the proximal end of the second clip body 120 is provided with a connecting ring 124, the connecting ring 124 is disposed around the connecting rod 116, preferably the connecting ring 124 is disposed around the first connecting section 1161. The second connecting section 1162 of the connecting rod 116 extends beyond the proximal end of the connecting ring 124, so that the clip connecting portion 1163 of the second connecting section 1162 can be conveniently fitted and connected with the inner core rod 310 without affecting the fitting between the first clip body 110 and the second clip body 120. The second clip body 120 and the connecting ring 124 are preferably integrally formed by a memory alloy material.
Referring to fig. 1 to 3, the core rod 310 is provided with at least one conveying elastic member 320, the number of the conveying elastic members 320 is the same as that of the clip connecting parts 1163, and one conveying elastic member 320 and a corresponding clip connecting part 1163 can be connected in a clamping manner. After the conveying elastic member 320 is engaged with the clip body connecting portion 1163, the conveying structure 300 pushes the first clip body 110 and the second clip body 120 to the distal preset position through the inner core rod 310, and drives the conveying elastic member 320 to deform, so as to separate the conveying elastic member 320 from the clip body connecting portion 1163, and separate the conveying structure 300 from the clamped structure. The conveying elastic member 320 is correspondingly provided with a second connecting groove or a second connecting protrusion. As shown in fig. 6 and 7, the conveying elastic member 320 is correspondingly provided with a second connecting groove, which is a through groove or a through hole.
Referring to fig. 6 and 7, the conveying elastic member 320 is an elastic clip, a proximal end of the elastic clip is fixed to the inner core rod 310, and a distal end of the elastic clip is connected to the clip body connecting portion 1163 in a snap-fit manner. The elastic clip is provided with a second pulling wire 330, and the second pulling wire 330 is used as a driving end to drive the elastic clip to be clamped or to be away from the clip body connecting part 1163. The elastic clip is provided with a wire guide groove along the axial direction, and the second wire 330 is clamped in the wire guide groove and extends to the near end of the conveying structure 300 through the guiding of the wire guide groove. The elastic clip is made of memory alloy, and when the elastic clip is not subjected to an external force, the elastic clip is attached to the outer side wall of the inner core rod 310 and extends along the axial direction of the inner core rod 310.
The distal ends of the first clip body 110 and the second clip body 120 of the present invention are coated with a clip cover film 130. The clip cover film 130 is made of a polymer material or a natural pericardium material. The high polymer material is at least one of expanded polytetrafluoroethylene, polyester, polyurethane, polypropylene or silicon rubber. When the present invention is applied to a mitral valve repair clamp, the first clip body 110 may have two first clipping arms, and the second clip body 120 may have two second clipping arms, where the first clipping arm and the second clipping arm are disposed opposite to each other to clip the valve leaflets together.
The foregoing shows and describes the general principles, essential features, and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A snap-fit assembly for a mitral valve repair clamp, comprising: the conveying structure is provided with an inner core rod matched with the connecting rod of the clamping structure;
the inner core rod is characterized in that:
at least one conveying elastic piece which can be clamped and connected with the connecting rod;
the connecting rod includes:
the far end of the first connecting section is connected with the clamping structure;
and the far end of the second connecting section is connected with the near end of the first connecting section, at least one clamp body connecting part is arranged on the outer side wall, and the clamp body connecting part is connected with the conveying elastic part in a clamping manner.
2. The mitral valve repair clamp assembly of claim 1, wherein at least one side of the cross-section of the second connecting segment has a width that is less than a width of a corresponding side of the cross-section of the first connecting segment.
3. The mitral valve repair clamp assembly of claim 2, wherein an outer sidewall of the clamp body connection portion is flush with or recessed within an outer sidewall of the first connection section.
4. The clamping component for the mitral valve repair clamp of claim 1, wherein the clamp body connecting part is a first connecting protrusion or is provided with a first connecting groove;
and a second connecting groove or a second connecting bulge is correspondingly arranged on the conveying elastic piece.
5. The mitral valve repair clamp assembly of claim 1, wherein the first connecting segment and the second connecting segment are integrally formed as a unitary structure;
the whole connecting rod is of a cylindrical structure or an elliptic cylindrical structure, the upper portion of the connecting rod is the first connecting section, and notches are respectively cut from the bottom surface to the far end of the two sides of the connecting rod to form the second connecting section.
6. The clamping assembly of any one of claims 1-5, wherein the clamping structure comprises a first clamp body, a second clamp body cooperating with the first clamp body to clamp the valve leaflet;
the first clamp body and the connecting rod are of an integral structure which is made of memory alloy materials through integral forming.
7. The clamping assembly for a mitral valve repair clamp of claim 6, wherein the proximal end of the second clamp body is provided with a connecting ring, and the connecting ring is sleeved outside the connecting rod;
the second clamp body and the connecting ring are of an integral structure which is made of memory alloy materials through integral forming;
the second connecting section extends beyond the proximal end of the connecting ring.
8. The clamping assembly for a mitral valve repair clamp of claim 1, wherein the delivery spring is a spring clip, a proximal end of the spring clip is fixed to the inner core rod, and a distal end of the spring clip is connected to the clamp body connecting part in a clamping manner;
the elastic clamping piece is provided with a second stay wire, and the second stay wire drives the elastic clamping piece to be clamped or far away from the clamp body connecting part.
9. The clamping assembly for a mitral valve repair clamp according to claim 8, wherein the elastic clip is provided with a pull wire guide groove along an axial direction, and the second pull wire is clamped in the pull wire guide groove and extends to the proximal end of the delivery structure through guidance of the pull wire guide groove.
10. The clamping assembly for a mitral valve repair jig of claim 8, wherein the elastic clip is made of a memory alloy, and the elastic clip is engaged with an outer sidewall of the inner core rod and extends in an axial direction of the inner core rod when no external force is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122453975.8U CN216168102U (en) | 2021-10-12 | 2021-10-12 | Clamping assembly for mitral valve repair clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122453975.8U CN216168102U (en) | 2021-10-12 | 2021-10-12 | Clamping assembly for mitral valve repair clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216168102U true CN216168102U (en) | 2022-04-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122453975.8U Active CN216168102U (en) | 2021-10-12 | 2021-10-12 | Clamping assembly for mitral valve repair clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216168102U (en) |
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2021
- 2021-10-12 CN CN202122453975.8U patent/CN216168102U/en active Active
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