Abstract
The present application relates to the field of medical devices, and in particular to a suture anchor. A suture anchor includes an anchor head and an anchor body, wherein a threading hole is formed on the anchor head, the anchor body includes a side pressing portion integrally formed by a plurality of layers of round tables, and at least two opposite longitudinal cuts are formed on each round table of the side pressing portion; from a direction close to the anchor head to a direction away from the anchor head, positions of the longitudinal cuts on adjacent round tables are deflected toward a same side.
Claims
1. A suture anchor, comprising an anchor head and an anchor body, wherein, a threading hole is formed on the anchor head, the anchor body comprises a side pressing portion integrally formed by a plurality of layers of round tables, and at least two opposite longitudinal cuts are formed on each round table of the side pressing portion; from a direction close to the anchor head to a direction away from the anchor head, positions of the longitudinal cuts on adjacent round tables are deflected toward a same side.
2. The suture anchor according to claim 1, wherein, the positions of the longitudinal cuts on adjacent round tables are deflected by a same angle in a clockwise or counterclockwise direction from a top view, and a deflection angle of the longitudinal cuts on the adjacent round tables is from 0 to 45 degrees.
3. The suture anchor according to claim 1, wherein, at least four longitudinal cuts are formed uniformly on each round table of the side pressing portion along a circumferential circle.
4. The suture anchor according to claim 1, wherein, the anchor body further comprises an abutment portion located at an end of the side pressing portion close to the anchor head, the abutment portion has a round table shape, and a taper of the abutment portion is greater than that of the round table of the side pressing portion.
5. The suture anchor according to claim 4, wherein, a first arc surface that is concave from both sides to the middle is formed on bottom of the anchor head, and a second arc surface that protrudes from both sides to the middle is formed on top of the abutment portion, and the second arc surface and the first arc surface fit with each other when being abutted tightly.
6. The suture anchor according to claim 5, wherein, the number of longitudinal cuts on each layer round table of the side pressing portion is two; when the first arc surface abuts on the second arc surface, a side edge of a longitudinal cut on the round table nearest to the anchor head directly faces the threading hole, and the other side edge of the longitudinal cut on the round table furthest from the anchor head directly faces the threading hole.
7. The suture anchor according to claim 4, wherein, a plurality of oblique cuts are uniformly formed on a circumference of the abutment portion in a circumferential direction, and a cutting depth of the oblique cut at a position near a lower end of the abutment portion is greater than a cutting depth at a position near a top end of the abutment portion.
8. The suture anchor according to claim 1, wherein, the top of the anchor head is a convex arc shape.
9. The suture anchor according to claim 1, wherein, a screw hole is formed on the bottom of the anchor head.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0029] FIG. 1 is a schematic diagram of the structure according to a first embodiment;
[0030] FIG. 2 is a schematic diagram of the structure according to the first embodiment from another perspective;
[0031] FIG. 3 is a schematic diagram of the structure according to a second embodiment;
[0032] FIG. 4 is a schematic diagram of the structure of an anchor body according to a third embodiment;
[0033] FIG. 5 is a schematic diagram of the structure of an anchor body according to a fourth embodiment;
[0034] FIG. 6 is a schematic diagram of the structure of an anchor body according to a fifth embodiment;
[0035] FIG. 7 is a schematic diagram of the structure of an anchor body according to a sixth embodiment.
DESCRIPTION OF THE EMBODIMENTS
[0036] The present application will be described in further detail below with reference to FIGS. 1-7.
[0037] The present application embodiment discloses a suture anchor.
Embodiment 1
[0038] As shown in FIGS. 1 and 2, a suture anchor includes an anchor head 1 and an anchor body 2, the top of the anchor head 1 is a convex arc shape, a threading hole 3 is formed on the front face of the anchor head 1, and a screw hole 4 is formed on the bottom of the anchor head 1.
[0039] As shown in FIGS. 1 and 2, the anchor body 2 includes a side pressing portion 5 integrally formed by ten layers of round tables, and an abutment portion 6 integrally formed on the top of the side pressing portion 5. A through hole 7 for passing through an anchor operating handle is formed in the middle of the anchor body 2. The abutment portion 6 has a round table shape, and the taper of the abutment portion 6 is greater than that of the side pressing portion 5.
[0040] As shown in FIGS. 1 and 2, eight oblique cuts 8 are uniformly formed on a circumference of the abutment portion 6 in a circumferential direction. Each oblique cut 8 has a shallow cutting depth at a position close to the top end of the abutment portion 6, and a deep cutting depth at a position close to the lower end of the abutment portion 6. Eight longitudinal cuts 9 are uniformly formed on a circumference of each round table of the side pressing portion 5 in the circumferential direction, and each longitudinal cut 9 cuts the round table of the abutment portion 6 in the vertical direction. The positions of the longitudinal cuts 9 on the adjacent round tables from top to bottom have a small angular deflection toward the same direction.
[0041] Specific use process is as follows.
[0042] In use, the anchor head 1 and the anchor body 2 are connected to the anchor operating handle, the suture thread is passed through the threading hole 3, and the anchor head 1 and the anchor body 2 are pushed into a groove opened on the bone with the anchor operating handle.
[0043] The outer ring of the abutment portion 6 abuts on and fits to the inner wall of the bone groove for fixation. The anchor head 1 abuts on the anchor body 2. The suture thread passes through the bone groove from a position where the longitudinal cuts 9 are formed on the anchor body 2. Since the positions of the longitudinal cuts 9 on each layer are deflected relative to each other, when the suture thread is stretched and straightened outwards, the suture thread can pass through a part with a larger gap between the abutment portion 6 and the bone groove, and can also pass through a part with a smaller gap therebetween, so that the suture thread is firmly fixed and cannot be cut off by the edge of the round table.
Embodiment 2
[0044] As shown in FIG. 3, a suture anchor includes an anchor head 1 and an anchor body 2, the top of the anchor head 1 is a convex arc shape, and a threading hole 3 is formed on the front face of the anchor head 1. A first arc surface 10, which is concave from both sides to the middle, is formed on the bottom of the anchor head 1, and a screw hole 4 is formed in the center of the first arc surface 10.
[0045] As shown in FIG. 3, the anchor body 2 includes a side pressing portion 5 integrally formed by ten layers of round tables, and an abutment portion 6 integrally formed on the top of the side pressing portion 5. A through hole 7 for passing through an anchor operating handle is formed in the middle of the anchor body 2. The abutment portion 6 has a round table shape, and the taper of the abutment portion 6 is greater than that of the side pressing portion 5. A second arc surface 11, which protrudes from both sides to the middle, is formed on the top of the abutment portion 6, and the second arc surface 11 can abut on and fit with the first arc surface 10.
[0046] As shown in FIG. 3, oblique cuts 8 are formed on the front and back sides of the abutment portion 6. The oblique cut 8 has a shallow cutting depth at a position close to the top end of the abutment portion 6, and has a deep cutting depth at a position close to the lower end of the abutment portion 6. Longitudinal cuts 9 are formed on both the front and back sides of each round table of the side pressing portion 5, and each longitudinal cut 9 cuts the round table of the abutment portion 6 in the vertical direction. The positions of the longitudinal cuts 9 on the adjacent round tables from top to bottom have a small angular deflection toward the same direction.
[0047] Specific use process is as follows.
[0048] In use, the anchor head 1 and the anchor body 2 are connected to the anchor operating handle, the suture thread is passed through the threading hole 3, and the anchor head 1 and the anchor body 2 are pushed into a groove opened on the bone with the anchor operating handle.
[0049] The outer ring of the abutment portion 6 abuts on and fits to the inner wall of a groove opened on the bone for fixation. When the first arc surface 10 abuts on the second arc surface 11, a right edge of a longitudinal cut 9 on the round table closest to the anchor head 1 directly faces the threading hole 3, and a left edge of a longitudinal cut 9 on the round table furthest from the anchor head 1 directly faces the threading hole 3. Therefore, when the suture thread is stretched and straightened outwards, the suture thread can pass through a part with a larger gap between the abutment portion 6 and the bone groove, and can also pass through a part with a smaller gap therebetween, so that the suture thread is firmly fixed and cannot be cut off by the edge of the round table.
Embodiment 3
[0050] This embodiment differs from the embodiment 1 is only in the anchor body 2. As shown in FIG. 4, the anchor body 2 includes a side pressing portion 5 integrally formed by a plurality of layers of round tables, and an abutment portion 6 integrally formed on the top of the side pressing portion 5. The abutment portion 6 has a round table shape, and the taper of the abutment portion 6 is greater than or equal to the taper of the round table of the side pressing portion 5. At least two oblique cuts 8 are uniformly formed on a circumference of the abutment portion 6 in the circumferential direction. Each oblique cut 8 has a shallow cutting depth at a position close to the top end of the abutment portion 6, and has a deep cutting depth at a position close to the lower end of the abutment portion 6. Longitudinal cuts 9, which are equal in number to the oblique cuts 8, are uniformly formed on a circumference of each round table of the side pressing portion 5 in the circumferential direction. Each longitudinal cut 9 cuts the round table of the abutment portion 6 in the vertical direction. From the top view, the positions of the longitudinal cuts 9 on the adjacent round tables from top to bottom is deflected by an angle of 5 degrees in the clockwise direction. From the top view, the oblique cuts 8 have an angle of 5 degrees in the counterclockwise direction relative to the longitudinal cuts 9 on the adjacent side pressing portion 5.
Embodiment 4
[0051] This embodiment differs from the embodiment 1 is only in the anchor body 2. As shown in FIG. 5, the anchor body 2 includes a side pressing portion 5 integrally formed by a plurality of layers of round tables, and an abutment portion 6 integrally formed on the top of the side pressing portion 5. The abutment portion 6 has a round table shape, and the taper of the abutment portion 6 is greater than or equal to the taper of the round table of the side pressing portion 5. At least two oblique cuts 8 are uniformly formed on a circumference of the abutment portion 6 in the circumferential direction. Each oblique cut 8 has a shallow cutting depth at a position close to the top end of the abutment portion 6, and has a deep cutting depth at a position close to the lower end of the abutment portion 6. Longitudinal cuts 9, which are equal in number to the oblique cuts 8, are uniformly formed on a circumference of each round table of the side pressing portion 5 in the circumferential direction. Each longitudinal cut 9 cuts the round table of the abutment portion 6 in the vertical direction. From the top view, the positions of the longitudinal cuts 9 on the adjacent round tables from top to bottom is deflected by an angle of 10 degrees in the clockwise direction. From the top view, the oblique cuts 8 have an angle of 10 degrees in the counterclockwise direction relative to the longitudinal cuts 9 on the adjacent side pressing portion 5.
Embodiment 5
[0052] This embodiment differs from the embodiment 1 is only in the anchor body 2. As shown in FIG. 6, the anchor body 2 includes a side pressing portion 5 integrally formed by a plurality of layers of round tables, and an abutment portion 6 integrally formed on the top of the side pressing portion 5. The abutment portion 6 has a round table shape, and the taper of the abutment portion 6 is greater than or equal to the taper of the round table of the side pressing portion 5. At least two oblique cuts 8 are uniformly formed on a circumference of the abutment portion 6 in the circumferential direction. Each oblique cut 8 has a shallow cutting depth at a position close to the top end of the abutment portion 6, and has a deep cutting depth at a position close to the lower end of the abutment portion 6. Longitudinal cuts 9, which are equal in number to the oblique cuts 8, are uniformly formed on a circumference of each round table of the side pressing portion 5 in the circumferential direction. Each longitudinal cut 9 cuts the round table of the abutment portion 6 in the vertical direction. From the top view, the positions of the longitudinal cuts 9 on the adjacent round tables from top to bottom is deflected by an angle of 15 degrees in the clockwise direction. From the top view, the oblique cuts 8 have an angle of 15 degrees in the counterclockwise direction relative to the longitudinal cuts 9 on the adjacent side pressing portion 5.
Embodiment 6
[0053] This embodiment differs from the embodiment 1 is only in the anchor body 2. As shown in FIG. 7, the anchor body 2 includes a side pressing portion 5 integrally formed by a plurality of layers of round tables, and an abutment portion 6 integrally formed on the top of the side pressing portion 5. The abutment portion 6 has a round table shape, and the taper of the abutment portion 6 is greater than or equal to the taper of the round table of the side pressing portion 5. At least two oblique cuts 8 are uniformly formed on a circumference of the abutment portion 6 in the circumferential direction. Each oblique cut 8 has a shallow cutting depth at a position close to the top end of the abutment portion 6, and has a deep cutting depth at a position close to the lower end of the abutment portion 6. Longitudinal cuts 9, which are equal in number to the oblique cuts 8, are uniformly formed on a circumference of each round table of the side pressing portion 5 in the circumferential direction. Each longitudinal cut 9 cuts the round table of the abutment portion 6 in the vertical direction. From the top view, the positions of the longitudinal cuts 9 on the adjacent round tables from top to bottom is deflected by an angle of 45 degrees in the counterclockwise direction. From the top view, the oblique cuts 8 have an angle of 45 degrees in the clockwise direction relative to the longitudinal cuts 9 on the adjacent side pressing portion 5.
[0054] The above are the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of protection of the present application.
[0055] List of reference signs: 1. anchor head; 2. anchor body; 3. threading hole; 4. screw hole; 5. side pressing portion; 6. abutment portion; 7. through hole; 8. oblique cuts; 9. longitudinal cut; 10. first arc surface; 11. second arc surface.
