CN221083697U - Knot-free fixed anchor - Google Patents

Abstract

The application relates to a knotting-free fixed anchor, and belongs to the technical field of medical appliances. The knotting-free fixed anchor comprises a nail body and a nail head, wherein the nail body is provided with a first hole penetrating through the nail body, and the nail body is sleeved on the inserter; the pin head is connected to the other end of the inserter and comprises a hollow part and two wire pressing parts, the hollow part is provided with a second hole penetrating through the pin head, the two wire pressing parts are oppositely arranged along a first direction, and the wire pressing parts are arranged on one side, away from the pin body, of the hollow part; the second hole is used for allowing the positioning needle to pass through, the two line pressing parts enclose a positioning area, and the suture passes through the positioning area. The knotting-free fixed anchor provided by the embodiment of the application can reduce the risk of direction deviation when the anchor is implanted into a bone canal, and reduce the difficulty of suture fixation.

Description

Knot-free fixed anchor

Technical Field

The application relates to the technical field of medical instruments, in particular to a knotting-free fixed anchor.

Background

The knotting-free anchor is an implantation instrument commonly used in sports medical orthopedic operations for fixing soft tissues separated from human bones on the human bones, and is generally used in repair operations for tearing or tearing of the soft tissues in bony structures. In the operation, the anchor is put into the bone canal through the inserter, the anchor is fixedly connected with the bone, so that the middle part of the suture is fixed on the bone, and the two ends of the suture are connected with soft tissues and then pass through the threading hole of the other knotting-free anchor to be further fixed on the bone of the human body. When the existing knot-free anchor is placed in a bone canal, medical staff generally confirms the extending direction of the bone canal through observation, then the anchor is placed in the bone canal, the direction of the anchor easily deviates from the direction of the bone canal in the implantation process of the anchor, the anchor is difficult to accurately enter the bone canal, and the suture fixing difficulty is high.

Disclosure of utility model

The application aims to solve the problems, and provides a knotting-free fixed anchor, which can reduce the risk of direction deviation when the anchor is implanted into a bone canal, reduce the difficulty of suture fixation and improve the problems.

The application provides a knotting-free fixed anchor, which comprises a nail body and a nail head, wherein the nail body is provided with a first hole penetrating through the nail body, and the nail body is sleeved on an inserter; the pin head is connected to the other end of the inserter and comprises a hollow part and two wire pressing parts, the hollow part is provided with a second hole penetrating through the pin head, the two wire pressing parts are oppositely arranged along a first direction, and the wire pressing parts are arranged on one side, away from the pin body, of the hollow part; the second hole is used for allowing the positioning needle to pass through, the two line pressing parts enclose a positioning area, and the suture passes through the positioning area.

In the technical scheme of the embodiment of the application, when the knotting-free fixing anchor provided by the embodiment of the application is used in an operation, an operator can firstly penetrate the positioning needle through the second hole and extend out of one end of the nail head, which is far away from the nail body, and the part of the positioning needle, which extends out of the second hole, is firstly inserted into the bone canal, so that the length direction of the positioning needle is approximately parallel to the length direction of the bone canal, then the inserter is pushed, the knotting-free fixing anchor is enabled to move along the positioning needle to enter the bone canal, then the nail body is fixedly connected with the bone canal, the positioning needle is pulled out, the inserter is removed, the positioning needle limits the direction of the knotting-free fixing anchor entering the bone canal, the risk of direction deviation when the perforation-free fixing anchor enters the bone canal is reduced, the perforation-free fixing anchor can enter the bone canal more accurately, and the implantation difficulty of the knotting-free fixing anchor is reduced; when the suture passes through the positioning area and the anchor is implanted into the bone canal, the anchor brings the middle part of the suture into the bone canal, the two ends of the suture are positioned outside the bone canal, and after the soft tissue is connected, the suture is fixed on the bone by other modes (such as knotting-free fixed anchor), and the implantation difficulty of the knotting-free fixed anchor is reduced, so that the fixation difficulty of the suture is reduced.

In some embodiments, the hollow portion is located between the two wire pressing portions, the wire pressing portions include a first section and a second section, the first section is connected with the hollow portion, one end of the second section connected with the first section is connected to the other end of the second section, and the interval dimension of the second sections of the two wire pressing portions in the first direction is gradually reduced.

According to the technical scheme, one end of the second section connected with the first section is gradually reduced in the interval dimension of the second sections of the two line pressing parts in the first direction to the other end of the second section, and the second sections are inclined, so that when the nail head enters the bone channel, on one hand, even if the nail head fails to align with the opening of the bone channel, the second sections of any line pressing part in the opening of the bone channel are contacted with the surface of the other line pressing part, and the knotting-free fixed anchor can synchronously displace in the first direction and the length direction of the nail body under the guidance of the second sections, and therefore the nail head enters the bone channel, and the difficulty of the nail head entering the bone channel is reduced; on the other hand, the second section can prevent the suture from moving towards the direction of separating from the positioning area, so that the risk that the suture is separated from the perforation-free fixed anchor is reduced.

In some embodiments, a surface of any one of the two wire pressing portions facing the other wire pressing portion is curved.

According to the technical scheme provided by the embodiment of the application, the surface of any one of the two line pressing parts, which faces the other line pressing part, is arc-shaped, so that the surface of the line pressing part, which is in contact with a suture, is smoother, and when the risk is in contact with the line pressing part, the line pressing part can uniformly apply force to the risk through the smooth contact surface, so that the risk of fracture of the suture caused by stress concentration is reduced.

In some embodiments, the hollow portion includes a body section and a connection section, the connection section is threadably connected to the inserter, the body section is connected to the wire pressing portion, the second hole extends through the body section and the connection section, and the second hole communicates with the location area.

In some embodiments, the outer wall of the connection section is provided with external threads, and the connection section extends into the inserter and is threaded with the inner wall of the inserter.

In the technical scheme of the embodiment of the application, the outer wall of the connecting section is provided with the external thread, the inner wall of the part of the inserter, which is close to the nail head, is provided with the internal thread used for being connected with the connecting section, and the connecting section stretches into the inner side of the inserter and is in threaded connection with the inner wall of the inserter, so that the structure is simple and the connection is stable.

In some embodiments, the hollow portion further includes a protrusion protruding from a surface of the main body section facing away from the connection section, the protrusion being located between the two press line portions in the first direction, and the protrusion being located at a position corresponding to a position of the second hole, the protrusion extending into the positioning region.

In the technical proposal of the embodiment of the application, the suture is positioned between the bulge and the line pressing part in the first direction, the position of the bulge corresponds to the position of the second hole, under the shielding of the bulge, the suture in the positioning area avoids the communication position between the second hole and the positioning area, thereby facilitating the positioning needle to pass through the second hole,

In some embodiments, the number of protrusions is two, and the two protrusions are disposed opposite each other along a second direction, the second direction being perpendicular to the first direction.

In the technical scheme of the embodiment of the application, the number of the protrusions is two, the two protrusions provide two limiting fulcra for the suture in the positioning area, and the positions of the two ends of the suture in the positioning area are limited, so that the protrusions have a higher limiting effect on the positions of the suture.

In some embodiments, the first hole is a hexagonal hole that mates with an outer surface of the inserter that is hexagonal cylindrical.

According to the technical scheme provided by the embodiment of the application, the outer surface of the inserter is in a hexagonal column shape, the first hole is a hexagonal hole, the inserter is adapted to pass through the first hole, the rotation of the nail body is limited by the inserter, and when the inserter is removed, the inserter can be pulled out of the nail body fixed on a bone canal quickly.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of an interposer provided in some embodiments of the present application;

FIG. 2 is a schematic view of a nail head according to some embodiments of the present application;

FIG. 3 is a top view of a stud provided in some embodiments of the present application;

FIG. 4 is a cross-sectional view at A-A in FIG. 3;

FIG. 5 is a schematic view of a nail head according to other embodiments of the present application;

Fig. 6 is a front view of a stud according to further embodiments of the present application.

Icon: 1-inserter, 2-suture, 3-needle, 4-knotting-free fixation anchor, 41-shank, 42-head, 420-second hole, 421-hollow, 4210-main body section, 4211-connecting section, 4212-protrusion, 422-crimping section, 4220-first section, 4221-second section, 423-positioning zone, X-first direction, Y-second direction.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the described embodiments of the application may be combined with other embodiments.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "attached" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The term "and/or" in the present application is merely an association relation describing the association object, and indicates that three kinds of relations may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

The term "plurality" as used herein means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means two or more (including two).

According to some embodiments of the present application, as shown in fig. 1 to 4, the present application provides a knotting-free fixing anchor 4, where the knotting-free fixing anchor 4 includes a nail body 41 and a nail head 42, the nail body 41 is provided with a first hole penetrating through itself, and the nail body 41 is sleeved on the inserter 1; the pin head 42 is connected to the other end of the inserter 1, and comprises a hollow portion 421 and two wire pressing portions 422, the hollow portion 421 is provided with a second hole 420 penetrating through the hollow portion 421, the two wire pressing portions 422 are oppositely arranged along the first direction X, and the wire pressing portions 422 are arranged on one side, away from the pin body 41, of the hollow portion 421; the second hole 420 is used for the positioning needle 3 to pass through, the two thread pressing parts 422 enclose a positioning area 423, and the suture 2 passes through the positioning area 423.

The pin 41 may be screw-in or knock-in.

When the nail body 41 is screw-in, the outer peripheral surface of the nail body 41, which is close to the connection of the nail body 41 and the inserter 1, is provided with external threads, and meanwhile, the inner wall of the opening of the bone canal of the patient is provided with internal threads for connection with the nail body 41.

The X direction shown in the figure is the first direction X.

The Y direction shown in the figure is the second direction Y.

The second hole 420 extends along the length direction of the pin body 41.

The second hole 420 may be a circular hole; or the second hole 420 may be an oval hole.

Suture 2 passes through locating region 423 in a second direction Y.

The second hole 420 may have a larger diameter than the diameter of the positioning needle 3.

The inner wall of the second hole 420 may be slidably fitted with the outer circumferential surface of the positioning needle 3.

The bone tunnel is a blind hole previously drilled in the bone for the implantation of an anchor.

When the knotting-free fixing anchor 4 provided by the embodiment of the application is used in an operation, an operator can firstly penetrate the positioning needle 3 through the second hole 420 and extend out of one end of the nail head 42, which is away from the nail body 41, the part of the positioning needle 3, which extends out of the second hole 420, is firstly inserted into a bone canal, the length direction of the positioning needle 3 is parallel to the length direction of the bone canal, then the inserter 1 is pushed, the knotting-free fixing anchor 4 is enabled to move along the positioning needle 3 to enter the bone canal, then the nail body 41 is fixedly connected with the bone canal, the positioning needle 3 is pulled out, the inserter 1 is removed, the positioning needle 3 limits the direction of the knotting-free fixing anchor 4 entering the bone canal, the risk of direction deviation when the perforation-free fixing anchor enters the bone canal is reduced, the perforation-free fixing anchor can enter the bone canal more accurately, and the implantation difficulty of the knotting-free fixing anchor 4 is reduced; when the suture 2 passes through the positioning area 423 and the anchor is implanted into the bone canal, the anchor brings the middle part of the suture 2 into the bone canal, the two ends of the suture 2 are positioned outside the bone canal, and after the soft tissue is connected, the suture 2 is fixed on the bone by other modes (such as the knotting-free fixed anchor 4), and the implantation difficulty of the knotting-free fixed anchor 4 is reduced, so that the fixation difficulty of the suture 2 is reduced.

Alternatively, as shown in fig. 2 and 4 to 6, the hollow portion 421 is located between two wire pressing portions 422, the wire pressing portions 422 include a first segment 4220 and a second segment 4221, the first segment 4220 is connected to the hollow portion 421, one end of the second segment 4221 connected to the first segment 4220 is connected to the other end of the second segment 4221, and the space dimension of the second segments 4221 of the two wire pressing portions 422 in the first direction X is gradually reduced.

When the positioning needle 3 passes through the second hole 420, the suture 2 is located between the portion of the positioning needle 3 protruding out of the second hole 420 and the crimping portion 422 in the first direction X, and when the suture 2 is plural, a portion of the plural sutures 2 is located between the positioning needle 3 and one of the two crimping portions 422, and another portion of the plural sutures 2 is located between the positioning needle 3 and the other of the two crimping portions 422.

When the positioning needle 3 passes through the second hole 420, the end of the second segment 4221 facing away from the first segment 4220 may contact the positioning needle 3, such that the first segment 4220, the second segment 4221, the hollow 421 and the positioning needle 3 enclose the suture 2, reducing the risk of the suture 2 being detached from the positioning region 423.

The second section 4221 is connected with the first section 4220 from one end to the other end of the second section 4221, the interval dimension of the second sections 4221 of the two wire pressing parts 422 in the first direction X is gradually reduced, and the second section 4221 is inclined, on one hand, when the nail head 42 enters the bone canal, even if the nail head 42 fails to align with the opening of the bone canal, when the second section 4221 of any wire pressing part 422 of the opening two wire pressing parts 422 is contacted with the surface of the other wire pressing part 422, the knotting-free fixed anchor 4 can synchronously displace in the length direction of the first direction X and the nail body 41 under the guidance of the second section 4221, so that the nail head 42 enters the bone canal, and the difficulty of entering the bone canal is reduced; on the other hand, the second segment 4221 can block movement of the suture 2 in a direction away from the locating region 423, reducing the risk of the suture 2 being dislodged from the perforation-free fixation anchor.

Alternatively, as shown in fig. 2 and 4, the surface of either one of the two nip portions 422 facing the other nip portion 422 is curved.

Any one of the two line pressing portions 422 is arc-shaped towards the surface of the other line pressing portion 422, so that the surface of the line pressing portion 422, which is in contact with the suture 2, is smooth, and when the risk is in butt joint with the line pressing portion 422, the line pressing portion 422 can uniformly apply force to the risk through smooth contact, and the risk that the suture 2 is broken due to stress concentration is reduced.

In some embodiments, the surface of the pressing line portion 422 facing away from the nail 41 is arc-shaped, so that one end of the pressing line portion 422 facing away from the nail 41 is smoother, and the risk that the pressing line portion 422 is scratched or poked to cause injury to an operator or a patient is reduced.

Alternatively, as shown in fig. 2 to 6, the hollow portion 421 includes a main body portion 4210 and a connection portion 4211, the connection portion 4211 is screwed with the inserter 1, the main body portion 4210 is connected with the wire pressing portion 422, the second hole 420 penetrates through the main body portion 4210 and the connection portion 4211, and the second hole 420 is communicated with the positioning region 423.

The main body section 4210 and the wire pressing portion 422 may be integrally formed; or the body segment 4210 and the wire pressing portion 422 may be welded.

Alternatively, as shown in fig. 2-6, the outer wall of the connection segment 4211 is provided with external threads, and the connection segment 4211 extends into the inserter 1 to be screwed with the inner wall of the inserter 1.

The outer wall of the connecting section 4211 is provided with external threads, and the part of the inner wall of the inserter 1 close to the nail head 42 is provided with internal threads for being connected with the connecting section 4211, and the connecting section 4211 stretches into the inner side of the inserter and is in threaded connection with the inner wall of the inserter 1, so that the structure is simple, and the connection is stable.

Alternatively, as shown in fig. 5 to 6, the hollow portion 421 further includes a protrusion 4212, the protrusion 4212 protrudes from a surface of the main body portion 4210 facing away from the connection portion 4211, in the first direction X, the protrusion 4212 is located between the two pressing portions 422, and the position of the protrusion 4212 corresponds to the position of the second hole 420, and the protrusion 4212 extends into the positioning region 423.

The protrusions 4212 do not exceed the pressed line portion 422 in the length direction of the nail body 41.

The protrusions 4212 protrude from the surface of the main body section 4210 facing away from the nail body 41 in the length direction of the nail body 41.

In the first direction X, the suture 2 is located between the protrusion 4212 and the thread pressing portion 422, the position of the protrusion 4212 corresponds to the position of the second hole 420, under the shielding of the protrusion 4212, the suture 2 in the positioning region 423 avoids the communication position between the second hole 420 and the positioning region 423, so that the positioning needle 3 can conveniently pass through the second hole 420,

Alternatively, as shown in fig. 5 to 6, the number of the protrusions 4212 is two, and the two protrusions 4212 are oppositely disposed along a second direction Y, which is perpendicular to the first direction X.

Two protrusions 4212 are disposed at both sides of the second hole 420, respectively.

The number of the protrusions 4212 is two, and the two protrusions 4212 provide two limiting fulcra for the suture 2 in the positioning area 423, so that the positions of the two ends of the suture 2 in the positioning area 423 are limited, and the effect of limiting the positions of the suture 2 by the protrusions 4212 is high.

Alternatively, the first hole is a hexagonal hole, which is adapted to the hexagonal cylindrical outer surface of the inserter 1.

The outer surface of the inserter 1 is in a hexagonal column shape, the first hole is a hexagonal hole, the inserter 1 is matched with the first hole, the inserter 1 limits the rotation of the nail body 41, and when the inserter 1 is removed, the inserter 1 can be pulled out of the nail body 41 which is fixed on a bone canal quickly.

While the application has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the application. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (8)

1. A tie-free anchor comprising:

the nail body is provided with a first hole penetrating through the nail body, and the nail body is sleeved on the inserter;

The pin head is connected to the other end of the inserter and comprises a hollow part and two wire pressing parts, the hollow part is provided with a second hole penetrating through the pin head, the two wire pressing parts are oppositely arranged along a first direction, and the wire pressing parts are arranged on one side, away from the pin body, of the hollow part;

The second hole is used for allowing the positioning needle to pass through, the two line pressing parts enclose a positioning area, and the suture passes through the positioning area.

2. The knotless fixation anchor of claim 1, wherein the hollow portion is located between two of the wire pressing portions, the wire pressing portions comprise a first section and a second section, the first section is connected with the hollow portion, one end of the second section connected with the first section is to the other end of the second section, and the second sections of the two wire pressing portions are gradually reduced in the interval dimension in the first direction.

3. The knotless fixation anchor of claim 1 wherein the surface of either of the two crimp portions facing the other crimp portion is arcuate.

4. The knotless fixation anchor of claim 1, wherein the hollow portion comprises a body section and a connection section, the connection section is threadably coupled to the inserter, the body section is coupled to the wire-pressing portion, the second hole extends through the body section and the connection section, and the second hole communicates with the location area.

5. The knotless fixation anchor of claim 4, wherein the outer wall of the connection section is provided with external threads, the connection section extending into the inserter and being threadably coupled to the inner wall of the inserter.

6. The tie-free anchor of claim 4, wherein the hollow portion further comprises a protrusion protruding from a surface of the main body section facing away from the connecting section, the protrusion being located between the two wire pressing portions in the first direction, and the protrusion being located at a position corresponding to the position of the second hole, the protrusion extending into the positioning region.

7. The knotless fixation anchor of claim 6, wherein the number of protrusions is two, the two protrusions being disposed opposite one another along a second direction, the second direction being perpendicular to the first direction.

8. The knotless fixation anchor of claim 1, wherein the first aperture is a hexagonal aperture that mates with an outer surface of the inserter that is hexagonal.