CN211325271U

CN211325271U - Anchor structure for implantation in tissue

Info

Publication number: CN211325271U
Application number: CN201922036786.3U
Authority: CN
Inventors: 刘洋; 杨剑; 龚霄雁; 魏继昌; 王东洋
Original assignee: Yinluo Wuxi Medical Equipment Co ltd
Current assignee: Yinluo Wuxi Medical Equipment Co ltd
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-08-25
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses an anchor structure for implanting tissue, relating to the technical field of medical instruments. The anchor part structure comprises an upright post and a wing structure which is arranged around the upright post and movably connected to the upright post, wherein the upright post is provided with a threading hole for a line body to pass through, the wing structure can be folded or unfolded relative to the upright post, and the wing structure and the upright post can rotate relatively. The anchor structure for implanting tissues is flexible and convenient to operate, easy to pierce tissues, firm and reliable, and capable of avoiding knotting of a line body.

Description

Anchor structure for implantation in tissue

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an anchor structure for implanting tissue.

Background

Annular dilation, the most common cause of mitral and tricuspid valve, can cause the leaflets to separate from each other, creating gaps and resulting in regurgitation of the valve. Therefore, the annular ring-contracting operation (including suturing of an annulus, implantation of a prosthetic annulus, etc.) for annular dilation is an important type of mitral valve or tricuspid valve repair, and is also a basic type of operation, which is based on the principle that, in response to insufficiency caused by annular dilation, the mitral valve or tricuspid valve orifice is reduced in area to allow the leaflets to fit together, thereby reducing regurgitation, or even completely eliminating regurgitation. The valve ring retraction can be independently applied to treat mitral valve and tricuspid valve regurgitation, and can also be combined with other repair technologies (such as valve leaflet repair and chordae tendineae implantation) to improve the success rate of the operation and prolong the survival time without regurgitation.

The traditional surgical annuloplasty ring contraction operation needs thoracotomy, cardiac arrest and extracorporeal circulation, the patient has large trauma, high pain degree and slow recovery, and many elderly and infirm cannot tolerate the surgical operation. In recent years, the concept of performing an annulus annuloplasty through a minimally invasive catheterization method has come to work, which relies on an imaging means to guide and use an instrument to perform annulus reduction on a mitral valve and a tricuspid valve under the condition that the heart does not stop beating.

In the ring shrinking process, a plurality of anchors are generally used to enter annulus tissues, a plurality of annuluses are connected in series through a wire body, finally, the wire body is tensioned, so that the anchors are driven to be tightened around a center, and then, the wire body is knotted and locked and then is cut off to complete the operation. However, in the conventional anchor, the blades are provided with threading holes, and after entering the valve annulus tissue, the blades cannot be adjusted in direction after being clamped into the valve annulus tissue, so that the line bodies among a plurality of anchors are often knotted to cause the condition that the locking cannot be smoothly performed, and the success rate of the operation is seriously affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anchor structure for implanting tissue, its flexible operation is convenient, can avoid appearing the line body and tie a knot.

To achieve the purpose, the utility model adopts the following technical proposal:

an anchor structure for implanting in tissue comprises a stand column and a wing structure which is arranged around the stand column and movably connected to the stand column, wherein the stand column is provided with a threading hole for a wire body to pass through, the wing structure can be folded or unfolded relative to the stand column, and the wing structure and the stand column can rotate relatively.

Optionally, the fin structure includes a blade disposed around the pillar, the blade is capable of being folded or unfolded relative to the pillar, and a root of the blade is movably connected to the pillar so that the blade and the pillar can rotate relative to each other.

Optionally, the number of the blades is at least two, and the blades are evenly distributed around the upright post.

Optionally, the blade is cut from a tube, and the tip of the blade is shaped like a knife tip or a blade capable of entering into tissue.

Optionally, the blades are woven from filaments.

Optionally, the wing structure further includes a connecting portion, the root of the blade is connected to the connecting portion, and the connecting portion is capable of rotating around the pillar.

Optionally, the connecting portion is integrally formed with the blade.

Optionally, the connecting portion is annular, and the connecting portion is a whole ring or an open ring.

Optionally, the stand has been seted up the mounting groove, the mounting groove is the annular, connecting portion activity set up in the mounting groove.

Optionally, one end of the upright post is provided with a cone, and the cone is a cone or a pyramid.

The utility model has the advantages that:

the utility model discloses an anchor structure, when carrying out the ring art of contracting, the leaf wing structure gets into and organizes in the tissue and is connected, after connecting, the hookup location and the direction of leaf wing structure tend to fixedly, through the rotation between stand and the leaf wing structure, make the stand can the free rotation, thereby carry out the rotation adjustment of certain direction, set up the through wires hole on the stand, direct action in stand when the pulling line body, it can to drive the stand rotation, can help wearing to establish of the line body, avoid the line body winding to tie a knot, and then can guarantee that the line body is smooth and easy, help going on of the ring operation of contracting, this an anchor structure for implanting the tissue, its flexible operation is convenient, easily pierce the tissue and firm reliable.

Drawings

FIG. 1 is a schematic structural view of an anchor structure for implantation into tissue according to the present invention;

FIG. 2 is a schematic top view of the anchor construction of FIG. 1;

FIG. 3 is a schematic cross-sectional view A-A of the anchor construction of FIG. 2;

fig. 4 is a schematic structural diagram of a fin structure provided by the present invention;

FIG. 5 is a schematic top view of the fin structure of FIG. 4;

FIG. 6 is a schematic structural view of another fin structure provided by the present invention;

FIG. 7 is a schematic structural view of yet another fin structure provided by the present invention;

fig. 8 is a schematic structural diagram of the stand column provided by the present invention;

FIG. 9 is a schematic view of an anchor structure in connection with tissue during a ring-down procedure.

In the figure: 10-an anchor structure; 20-a wire body;

1-upright column; 11-a column; 12-a cone; 13-threading holes; 14-mounting grooves; 111-a first cylinder; 112-a second cylinder; 2-leaf fin structure; 21-leaf blade; 22-a connecting part; 211-blade tip; 221-circular hole.

Detailed Description

The technical solution of the present invention will be further explained by the following embodiments with reference to fig. 1 to 9.

As shown in fig. 1 to 8, the present invention provides an anchor structure for tissue implantation, and in particular, the anchor structure 10 can pierce through the annulus tissue to be connected with the annulus tissue, and is suitable for an annular ring contraction operation.

Example 1

As shown in FIG. 1, the present invention provides an anchor structure for implanting in tissue, the anchor structure 10 including a post 1 and a fin structure 2 disposed around the post 1 and movably connected to the post 1. The upright post 1 is provided with a threading hole 13 for the thread 20 to pass through, the fin structure 2 can be folded or unfolded relative to the upright post 1, and the fin structure 2 and the upright post 1 can rotate relatively.

When carrying out the operation of encircleing, wing structure 2 gets into and is connected with the tissue in the tissue, after connecting, wing structure 2's hookup location and direction tend to fixedly, through the rotation between stand 1 and wing structure 2, make stand 1 can the free rotation, thereby carry out the rotation adjustment of certain direction, set up through wires hole 13 on stand 1, direct action is in stand 1 when pulling the line body 20, it can to drive stand 1 rotation, can help wearing to establish of line body 20, avoid the line body winding to tie a knot, and then can guarantee that the line body is smooth and easy, help going on of the operation of encircleing, this an anchor structure for implanting the tissue, its flexible operation is convenient.

As shown in fig. 1, 3 and 8, in order to facilitate the entry of the column 1, one end of the column 1 is provided with a cone 12. Optionally, the cone 12 is a cone or a pyramid.

As shown in fig. 1, the fin structure 2 of the present invention includes a blade 21 disposed around the column 1, the blade 21 can be folded or unfolded relative to the column 1, and the root of the blade 21 is movably connected to the column 1 so that the blade 21 and the column 1 can rotate relatively. The tissue is commonly entered by the plurality of blades 21, thereby securing connection reliability and stability.

In the present embodiment, the number of the leaves 21 is at least two like the petals of a flower and the leaves 21 are evenly distributed around the post 1, typically 2-10. As shown in fig. 1 to 3, the number of the blades 21 is preferably three, the three blades 21 are distributed on the periphery of the upright post 1 at an included angle of 120 °, when the three blades 21 enter the tissue simultaneously for fixation, three-point positioning is realized, the fixation is more stable, and large deviation and inclination caused by pulling of the wire body 20 on the upright post 1 are avoided, thereby being helpful for protecting the tissue. Of course, in other embodiments, there may be more blades 21.

Alternatively, in the present embodiment, as shown in fig. 4 and 5, the blades 21 are cut from a pipe, each blade 21 is a part of the side wall of the circular pipe, and the circular pipe can be formed by splicing a plurality of blades 21. Of course, in other embodiments, as shown in fig. 6, the blades 21 may be in the form of fan-shaped pieces.

The blades 21 are distributed around the upright post 1, and the blade tips 211 of the blades 21 can be folded towards the upright post 1 and also can be unfolded back to the upright post 1. In the collapsed state, the anchor structure is transported in a tubular catheter, and in the expanded state, the blades 21 will automatically expand as the force disappears at the moment the anchor structure is removed from the catheter, at which point the tips 211 of the blades 21 penetrate the tissue to form a barbed connection. To facilitate penetration of the blade 21 into tissue, as shown in fig. 4-6, the tip 211 of the blade 21 is shaped as a knife or blade that can enter the tissue. Preferably, as shown in fig. 4 and 5, the blade tip 211 of the blade 21 has a blade edge shape, and the blade 21 has a substantially arc-shaped configuration, and the width of the blade tip 211 is narrowed to form a pointed blade tip 211. As another preference, as shown in fig. 6, the tip 211 of the blade 21 is blade-shaped, and the blade 21 has a substantially fan-shaped structure, which gradually increases in width from the root to the tip 211, and has an arc shape at the tip 211, and the width is the largest, when the tip 211 is thin and is like a sheet, thereby facilitating the entry into the tissue.

As shown in fig. 1, 3, and 4, the fin structure 2 of the present invention further includes a connecting portion 22, the root of the blade 21 is connected to the connecting portion 22, and the connecting portion 22 can rotate around the column 1. The blade 21 can be provided with reliable rotation through the connecting portion 22, so that the blade 21 is prevented from generating rotation friction directly with the upright 1, and the blade 21 is protected.

In the present embodiment, the connecting portion 22 is integrally formed with the blade 21, which helps to stabilize the connection between the blade 21 and the connecting portion 22, avoid adding an additional connecting component between the two, simplify the structure, and further help to perform the ring-shrink operation.

In the present embodiment, the connecting portion 22 has a ring shape. For example, the connecting portion 22 is a full ring or a split ring. Preferably a full ring (as shown in fig. 4 and 5). To facilitate the installation of the connection portion 22, the connection portion 22 has elasticity. The connecting portion 22 is provided with an annular hole 221, and the annular hole 221 is used for being in running fit with the upright post 1.

Based on the above structure, in the present embodiment, the connecting portion 22 and the blade 21 of the fin structure 2 are cut at a time, specifically, are cut and heat-set from a memory alloy material.

When the connecting portion 22 rotates on the upright post 1, in order to avoid the connecting portion 22 from falling or deviating, optionally, as shown in fig. 8, the upright post 1 is provided with a mounting groove 14, the connecting portion 22 is movably disposed in the mounting groove 14, and the connecting portion 22 is axially limited by the mounting groove 14. In this embodiment, the mounting groove 14 is an annular groove, which can better match with the annular connecting portion 22 in the circumferential direction, so as to ensure stable and reliable rotation.

In this embodiment, the mounting slot 14 is closer to an end of the post 1, thereby facilitating the blade 21 to enter the tissue completely at a shorter distance of the post 1 entering the tissue, avoiding damage to the tissue caused by too deep insertion.

Specifically, as shown in fig. 8, the pillar 1 is divided into a first column 111, a mounting groove section, and a second column 112, and the threading hole 13 is located in one of the first and

second columns

111 and 112 and is opened along a radial direction thereof. At this time, the first column 111 and the installation groove section and the second column 112 and the installation groove section can be connected into a whole, and when the connecting part 22 is assembled, the connecting part 22 is installed in the installation groove section through the elasticity of the connecting part 22 itself, so that excessive connecting structures do not exist among the parts, and the structure is simplified; at least one of the first cylinder 111 and the second cylinder 112 may be detachably connected to the installation groove section, for example, at least one of the first cylinder 111 and the second cylinder 112 may be connected to the installation groove section by a screw or a welding, so that the first cylinder 111 or the second cylinder 112 may be connected to the installation groove section after the connection portion 22 is installed in the installation groove section in advance, which is very convenient to operate.

In the three-stage structure, the cone 12 may be disposed at the end of the first cylinder 111 or the end of the second cylinder 112, and preferably, in the present embodiment, the threading hole 13 is disposed on the first cylinder 111, and the cone 12 is disposed at the end of the second cylinder 112, wherein the cone 12 and the second cylinder 112 are of an integrated structure, and the length of the second cylinder 112 is much smaller than that of the first cylinder 111.

Besides the above-mentioned column form, in other embodiments, the mounting groove 14 may be located at one end of the column 1, the column 1 is divided into a first column 111 and a mounting groove section, the threading hole 13 is located at the first column 111 and is opened along a radial direction thereof, and the cone 12 may be disposed at an end of the mounting groove section for limiting the connecting portion 22, the cone 12 and the mounting groove section may be detachably connected or integrally connected, and the cone 12 and the mounting groove section 12 are integrally connected in consideration of the safety of the operation.

In a word, the wing structure 2 of the present invention can enter the installation groove 14 by passing through the cone 12, and can also be directly clamped into the installation groove, and the connection form is diversified, and the operation is very convenient.

Example 2

As shown in fig. 7, the present embodiment is different from embodiment 1 in that: the blades 21 are woven from wire, specifically the blades 21 are woven from metal wire. In the present embodiment, the blades 21 are formed in a circular shape, and therefore, the blades 21 are formed integrally in a circular shape.

To sum up, the anchor structure of the present invention, when in use, as shown in fig. 9, sequentially passes the wire body 20 through the threading holes 13 of the anchor structures, so that the anchor structures sequentially enter the tissue and are connected with the tissue, the anchor structures are surrounded into a ring shape, and then both ends of the wire body 20 are pulled to start the anchor structures to be closed, thereby achieving the purpose of ring shrinkage. In this process, because the line body is worn to establish on stand 1, leaf wing structure 2 is connected fixedly with the tissue, and both do not influence each other to do not influence wearing to establish of line body, avoid the winding.

The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.

Claims

1. An anchor structure for implanting in tissue, characterized in that, the anchor structure (10) includes a column (1) and a wing structure (2) disposed around the column (1) and movably connected to the column (1), wherein, the column (1) is provided with a threading hole (13) for a line body (20) to pass through, the wing structure (2) can be folded or unfolded relative to the column (1), and the wing structure (2) and the column (1) can rotate relatively.

2. Anchor structure as claimed in claim 1, characterized in that the fin structure (2) comprises blades (21) arranged around the uprights (1), the blades (21) being able to be folded or unfolded with respect to the uprights (1), the roots of the blades (21) being movably connected to the uprights (1) to enable relative rotation of the blades (21) and the uprights (1).

3. Anchor structure according to claim 2, characterized in that the blades (21) are at least two and that the blades (21) are evenly distributed around the upright (1).

4. An anchor structure as claimed in claim 2, wherein said blade (21) is cut from a tube, and the tip (211) of said blade (21) is in the form of a knife or blade capable of entering tissue.

5. Anchor construction according to claim 2, characterised in that the blade (21) is braided from wire.

6. An anchor structure as claimed in claim 2, wherein the fin structure (2) further comprises a connecting portion (22), the root of the blade (21) being connected to the connecting portion (22), the connecting portion (22) being rotatable about the upright (1).

7. An anchor construction according to claim 6, wherein the connecting portion (22) is formed integrally with the blade (21).

8. An anchor construction according to claim 6, wherein the connecting portion (22) is annular, the connecting portion (22) being a full or split ring.

9. The anchor structure of claim 6, wherein the upright (1) is provided with a mounting groove (14), the mounting groove (14) is a ring groove, and the connecting part (22) is movably arranged in the mounting groove (14).

10. Anchor structure according to any one of claims 1-9, characterised in that one end of the upright (1) is provided with a cone (12), which cone (12) is a cone or a pyramid.