CN217285911U

CN217285911U - Medical suture anchor

Info

Publication number: CN217285911U
Application number: CN202220187970.7U
Authority: CN
Inventors: 徐淑芬; 黄国健; 傅彦棉; 方明
Original assignee: Canwell Medical Co ltd
Current assignee: Canwell Medical Co ltd
Priority date: 2022-01-24
Filing date: 2022-01-24
Publication date: 2022-08-26
Anticipated expiration: 2032-01-24

Abstract

The utility model relates to the technical field of medical equipment, concretely relates to medical suture anchor, including stylolite and anchor assembly, anchor assembly is the cylinder, and its radial cross-section's maximum diameter is less than anchor assembly's length, is provided with two through holes to anchor assembly on anchor assembly's outer peripheral face, and two the maximum distance of through hole is not less than the radius sum of two through holes, anchor assembly is strung through two through holes free sliding on the stylolite. The utility model discloses a medical suture ground tackle has simple structure and easy and simple to handle when using, destroys less and can improve the characteristics of the stability of postoperative to the sclerotin simultaneously.

Description

Medical suture anchor

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a medical anchor of sewing up.

Background

The most of the soft tissue injuries are complete or partial detachment of tendons, ligaments or other soft tissues from bones, which mainly occur in joints of human bodies, and the injuries caused by hyperkinesia or over-stress of the soft tissues along with aging usually need surgical operations. A common repair currently used in surgery is a suture anchor device or full suture anchor (also known as a flex anchor) to secure the detached soft tissue to the bone.

Traditional suture anchors require a larger anchor hole and cause greater damage to bone. The full suture anchor is smaller for the bone cavity in which the suture is placed, but the phenomenon that the anchor breaks away from the bone due to deformation and shrinkage exists, and the risk of anchor failure exists.

Disclosure of Invention

To the technical problem that above-mentioned exists, the utility model provides a medical anchor of sewing up, should sew up anchor simple structure and easy and simple to handle when using, destroy less and can improve the stability of postoperative to the sclerotin simultaneously.

In order to solve the technical problem, the utility model provides a technical scheme is:

a medical suture anchor comprising: the anchoring piece is a cylinder, the maximum diameter of the radial section of the anchoring piece is smaller than the length of the anchoring piece, two through holes are formed in the outer peripheral surface of the anchoring piece towards the inside of the anchoring piece, the maximum distance between the two through holes is not smaller than the sum of the radiuses of the two through holes, and the anchoring piece is freely and slidably strung on the suture line through the two through holes. The utility model discloses a medical suture anchor, through penetrating the stylolite in proper order in two through holes of anchor assembly, pack anchor assembly into the bone hole after, only need the both ends of pulling the stylolite, can make anchor assembly at the certain angle of bone internal rotation, thereby cause anchor assembly length direction card to anchor the bone in the bone.

Preferably, the two through holes are arranged in an 'eight' shape or a 'Y' shape, and more preferably, two ends of the suture line are led out from the end parts of the two through holes close to each other; therefore, the line can be better taken up after the anchoring piece is arranged in the bone hole.

Preferably, the angle alpha formed by the central line of the through hole and the axis of the anchoring piece is 60-90 degrees.

Preferably, the intersection of all the through holes and the anchoring piece is in circular arc transition. Due to the structural design, the suture line is not easily cut off by the sharp angle of the anchoring piece when contacting with the anchoring piece.

Preferably, the through holes are 0.5 to 1.0mm in diameter.

Preferably, the diameter of the radial section of the anchoring part is phi 2.0-phi 2.8 mm.

Preferably, the length of the anchor is 5-10 mm.

Preferably, the anchoring piece is made of ultra-high molecular weight polyethylene or PEEK or titanium alloy material.

The utility model discloses a medical anchor of sewing up's beneficial effect is: on one hand, the suture anchor has extremely simple structure and very simple and convenient operation when in use, and only needs to be arranged in a bone hole by the anchoring part and then pull the two ends of the suture line for adjustment; on the other hand, the size of the bone hole required by the suture anchor during operation is equal to or smaller than that of the bone hole required by the flexible anchor during operation, so that the damage to bone is small; and the anchoring piece does not anchor the bone through deformation like a flexible anchoring piece, and the phenomenon that the anchoring piece is separated from the bone due to deformation and shrinkage does not exist after operation, so that the suture anchor has better stability compared with the flexible anchoring piece.

Drawings

FIG. 1 is a schematic view of a medical suture anchor according to the present invention;

FIG. 2 is a state diagram of one use of the embodiment of FIG. 1;

FIG. 3 is a schematic view of another embodiment of the medical suture anchor of the present invention;

fig. 4 is a state diagram for use of the embodiment of fig. 3.

In the figures, 1 suture, 2 anchors, 3 through holes, 11 sutures, 12 anchors, 13 through holes, 4 cortical bone, 5 cancellous bone, 6 bone holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following detailed description of the medical suture anchor of the present invention is provided by way of example with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model discloses a medical anchor of sewing up includes: the anchoring piece is a cylinder, the maximum diameter of the radial section of the anchoring piece is smaller than the length of the anchoring piece, two through holes are formed in the outer peripheral surface of the anchoring piece towards the inside of the anchoring piece, the maximum distance between the two through holes is not smaller than the sum of the radiuses of the two through holes, and the anchoring piece is freely and slidably strung on the suture line through the two through holes.

The anchoring part can be a cylinder or a prism, can be a constant section or a variable section, and can be a solid or a hollow; the sewing line can be one, and can also be used together by a plurality of sewing lines to reinforce the sewing effect; in order to enhance the anchoring strength of the suture anchor, a plurality of anchoring elements may be serially connected to the suture, each anchoring element being anchored to the bone at a spaced-apart distance.

Example 1

As shown in fig. 1-2, a medical suture anchor includes: the suture 1 is a 2# thread, and the diameter of the 2# thread is 0.500-0.599 mm; and an anchoring part 2 made of ultra-high molecular weight polyethylene or PEEK or titanium alloy, the radial cross section of the anchoring part 2 can be in any shape, for example, the radial cross section is circular, polygonal or annular, etc., the preferred embodiment is a circular or polygonal cylinder, the diameter of the circumscribed circle of the radial cross section of the anchoring part 2 is between 2.0 and 2.8mm, the length range of the anchoring part 2 is 5-10mm, and the diameter of the circumscribed circle is smaller than the length of the anchoring part 2; two through holes 3 are inwards arranged from the peripheral surface of the anchoring part 2, the intersection angle alpha of the central line of the through holes 3 and the axial line of the anchoring part 2 is 60-90 degrees, the size of the through holes 3 is phi 0.5-phi 1.0mm, the maximum distance of the two through holes 3 is not less than the sum of the radiuses of the two through holes, and in the embodiment, the two through holes 3 are arranged in an 'eight' shape. The intersections of all the through holes 3 and the anchoring element 2 are preferably arranged to form circular arc transition, so that the suture line is not easily cut by sharp corners of the anchoring element when contacting the anchoring element. The anchor 2 is freely and slidably strung on the suture 1 through two through holes 3, and the suture 1 penetrates through one of the through holes and penetrates out of the other through hole. In this example, in order to facilitate the winding, both ends of the suture thread 1 are respectively penetrated out from the end parts close to the two through holes 3.

When the angle of intersection α varies, it is possible for the two through holes to be parallel or to intersect. As shown in fig. 3, the center line of the two through holes 13 of the anchoring member 12 intersects the axis of the anchoring member 12 at an angle α of 60 °, and at this time, the two through holes 13 partially intersect to form a "Y" shape. When the intersection angle alpha is 90 degrees or the sum of the two intersection angles is 180 degrees, the two through holes are parallel.

As shown in fig. 2 and 4, the medical suture anchor is implanted into bone in a using state. During operation, a bone hole 6 with the size matched with the diameter of the anchoring piece 2 is drilled on the bone at the proper position of the damaged joint part, the depth of the bone hole 6 is the depth of the cortical bone 4 plus the cancellous bone 5, and the depth of the cancellous bone 5 is matched with the length of the anchoring piece 2. The anchoring piece 2 which is pre-arranged with the suture line 1 is pushed into the bone hole 6 from the end part, and the two ends of the suture line 1 are required to be outside the bone; after the anchoring piece 2 completely enters the cancellous bone 5, tension is applied to two ends of the suture 1, the suture which is advanced into the bone is pulled, the anchoring piece 2 rotates in the cancellous bone 5 to press the cancellous bone, and the anchoring piece 2 is clamped at the opening of the cortical bone 4; finally, the soft tissue of the joint part is fixed by the suture 1.

The utility model discloses a suture anchor is because the maximum diameter of 2 radial cross-sections of anchor assembly is less than its length, consequently can guarantee that anchor assembly can not break away from the bone after the certain angle of bone internal rotation yet, but with the drill way department of length direction card at the cortex bone.

Example 2

The medical suture anchor of example 2 is identical in structure to the suture anchor of example 1 except that the suture 1 is fed in and out from the other side of the anchor. Thus, the state of use of the medical suture anchor in bone was rotated 180 ° with respect to the state of use of example 1.

The surgical method and procedure of example 2 are the same as those of example 1.

In summary, the above description is only a preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical suture anchor, comprising:

a suture;

the anchoring part is a cylinder, the maximum diameter of the radial section of the anchoring part is smaller than the length of the anchoring part, two through holes are formed in the outer peripheral surface of the anchoring part towards the anchoring part, and the maximum distance between the two through holes is not smaller than the sum of the radiuses of the two through holes;

the anchoring piece is freely and slidably strung on the suture line through the two through holes.

2. The medical suture anchor according to claim 1, wherein the two through holes are arranged in an "eight" or "Y" shape.

3. The medical suture anchor of claim 2, wherein both ends of the suture thread are led out from the ends of the two through holes close to each other.

4. The medical suture anchor of claim 1, wherein the center line of the through-hole makes an angle α of 60 ° to 90 ° with the axis of the anchor.

5. The medical suture anchor according to claim 1, wherein all the through-going holes intersect the anchor with a rounded transition.

6. The medical suture anchor according to any one of claims 1 to 5, wherein the through-going hole is 0.5 mm to 1.0 mm.

7. The medical suture anchor according to any one of claims 1 to 5, wherein the maximum diameter of the radial cross section of the anchor member is from 2.0 mm to 2.8 mm.

8. The medical suture anchor according to any one of claims 1 to 5, wherein the length of the anchor is 5 to 10 mm.

9. The medical suture anchor according to any one of claims 1 to 5, wherein the anchor is of ultra high molecular weight polyethylene or PEEK or a titanium alloy material.