CN216495445U - Anti-rotation anti-poking-pressing wire anchor nail - Google Patents

Abstract

The utility model discloses an anti-rotation anti-dialing wire pressing anchor, which comprises: the first column section is of a cylindrical structure; the second column section is of a prismatic structure, is positioned on one side of the first column section and is integrally formed with the first column section; the third column section is of a conical structure and is positioned on one side, far away from the first column section, of the second column section, and the third column section and the second column section are integrally formed; the cross-sectional diameter of the first column section is greater than the width of the second column section. The crimping anchor disclosed by the utility model has the advantages that after the anchor is placed into a bone for a period of time, the bone tissue is tightly combined with the anchor, the anti-rotation performance of the crimping anchor in bone is improved, and in the process of implanting the anchor, a medical suture can be effectively prevented from being separated out due to friction.

Description

Anti-rotation anti-poking-pressing wire anchor nail

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an anti-rotation anti-poking and pressing line anchor.

Background

In the rotator cuff and each joint ligament repair operation, a pressing line anchor (also called an extrusion screw) is needed to be used for pressing a medical sewing line into a bone substance so as to keep the stretching effect on the ligament, and specifically, the medical sewing line is wound on the anchor by using an instrument, and then the anchor and the medical sewing line are screwed into the bone substance together for fixing by using a driving instrument through a prefabricated channel on the bone substance.

The existing wire pressing anchor has certain defects: at the prosthetic in-process of joint ligament postoperative, human activity can produce to the ligament and draw to rise and twist reverse the effect, consequently the line ball anchor mainly bears in clinical be axial and dial out power and the torsional force of circumference, and current line ball anchor, because the defect of its design, make the postoperative repair in-process, sclerotin is less with the combination dynamics of line ball anchor, sclerotin itself can not produce fine anti-torsion anti-dial-out effect to line ball anchor, make line ball anchor have not hard up risk, probably lead to shoulder sleeve or ligament repair failure, and current line ball anchor, at the in-process of implanting, can produce the friction with the prefabricated passageway on the sclerotin, it has certain not hard up risk to lead to medical sewing line.

Based on the above, the utility model discloses a rotation-resistant and anti-dialing-out pressing line rivet, which is used for solving the defect that the conventional pressing line rivet is weak in rotation-resistant and anti-dialing-out capability.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to an anti-rotation anti-poke wire anchor for solving the above-mentioned problems of the prior art.

In order to solve the technical problems, the utility model provides the following technical scheme: an anti-rotation anti-poke crimp anchor, the crimp anchor comprising:

the first column section is of a cylindrical structure;

the second column section is of a prismatic structure, is positioned on one side of the first column section and is integrally formed with the first column section;

the third column section is of a conical structure and is positioned on one side, far away from the first column section, of the second column section, and the third column section and the second column section are integrally formed;

the cross-sectional diameter of the first column section is greater than the width of the second column section.

Preferably, the crimping anchor further comprises a fourth column section, wherein the fourth column section is of a cylindrical structure and is located between the second column section and the third column section;

the diameter of the cross section of the fourth column section is larger than the width of the second column section.

Preferably, the first column section is provided with a first thread;

and a second thread is arranged on the fourth column section.

Preferably, the first or second thread comprises:

the end surface of the cross section of the thread bulge is a plane;

the cross section of the thread groove is an arc concave surface.

Preferably, be provided with on the first post section lateral wall and dodge the groove, dodge the groove both ends and extend to the outer edge of first post section.

Preferably, a plurality of winding grooves are formed in the lateral edge of the third column section, and the plurality of winding grooves are spirally formed along the third column section.

Preferably, a holding hole is formed in an end face of one end, away from the second column section, of the first column section, and the holding hole is a hexagon socket.

Compared with the prior art, the utility model has the following beneficial effects:

1. after the line pressing anchor is placed into a human body, axial pull-out force and torsion force are mainly borne, and the anti-rotation and anti-pull-out line pressing anchor disclosed by the utility model has the advantages that firstly, the prism structure is designed in the middle of the anchor, so that after the anchor is placed into a skeleton for a period of time, surrounding bone tissues are combined with the prism structure, the anti-rotation performance of the line pressing anchor in sclerotin is improved, secondly, the side part of the line pressing anchor is also provided with an avoiding groove, the sclerotin can grow into the avoiding groove at the same time, the anti-rotation performance of the line pressing anchor is further improved, and finally, the thread grooves of the thread pressing anchor are of an arc concave structure and are combined with the sclerotin as much as possible, and the tensile performance of the line pressing anchor is improved;

2. the utility model discloses an anti-rotation anti-pulling thread-pressing anchor, which is characterized in that a winding groove is arranged on a prism structure, medical sutures are wound on the winding groove and then extend out of bones through an avoiding groove, the stability of the medical sutures can be effectively improved in the subsequent bone ingrowth process, the avoiding groove is arranged on the side wall of the thread-pressing anchor, the extending space of the medical sutures is provided, and the medical sutures can be effectively prevented from being loosened due to friction in the process of implanting the anchor.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:

FIG. 1 is an elevation view of an anti-rotation anti-poke wire anchor in an embodiment of the utility model;

FIG. 2 is a cross-sectional view of an anti-rotation anti-poke wire anchor in an embodiment of the utility model;

FIG. 3 is a detail view of the first thread or the second thread in an embodiment of the utility model;

FIG. 4 is a schematic illustration of an anti-rotational anti-suture anchor wrapped around a medical suture in accordance with an embodiment of the present invention;

FIG. 5 is a schematic view of an anti-rotation anti-suture anchor of an embodiment of the present invention implanted in bone;

in the figure:

the device comprises a first column section 1, a first thread 11, an avoidance groove 12 and a holding hole 13;

a second column section 2, a winding slot 21;

a third column section 3;

a fourth column section 4, a second thread 41;

the thread protrusion a and the thread groove b;

a medical suture 5;

cortical bone 6;

cancellous bone 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In an embodiment, this embodiment provides an optimal scheme of an anti-rotation anti-poking suture anchor, and first, as shown in fig. 5, in order to achieve that the suture anchor can be smoothly placed into a cortical bone 6 and a cancellous bone 7 in sequence, as shown in fig. 1 to 2, the suture anchor includes a first column section 1, the first column section 1 is of a cylindrical structure and can extend into a bone, and a medical suture 5 is pressed into the bone;

further, in order to realize that the force used is small and the stability for grabbing the bone is good when the first column section 1 is placed in the bone, as shown in fig. 1-2, a first thread 11 is arranged on the side wall of the first column section 1, so that the first thread 11 is stably combined with a prefabricated channel on the bone;

specifically, as shown in fig. 3, the first thread 11 is composed of a plurality of continuous thread protrusions a and thread grooves b, in order to make the first column section 1 and the bone substance combined as much as possible, the end surface of the section of each thread protrusion a is a plane, and the section of each thread groove b is an arc concave surface, so that when the first column section 1 is placed into the prefabricated channel, the combination area of the bone substance and the thread grooves b is increased, and the tensile property of the crimping anchor is improved;

furthermore, in the process of placing the pressing line anchor into the bone, friction is generated between the pressing line anchor and the prefabricated channel, so that the medical suture 5 is prevented from loosening when the pressing line anchor is placed, and the anti-rotation performance of the pressing line anchor is also improved, as shown in fig. 1-2, an avoiding groove 12 is arranged on the side wall of the first column section 1, two ends of the avoiding groove 12 extend to the outer edge of the first column section 1, when the pressing line anchor is used, as shown in fig. 4, the medical suture 5 penetrates out of the bone through the avoiding groove 12, the risk of loosening of the medical suture 5 is avoided to a certain extent, and after the pressing line anchor is implanted into the bone for a period of time, the bone grows into the avoiding groove 12, and the anti-rotation performance of the pressing line anchor is improved;

further, as shown in fig. 2, a holding hole 13 is formed in an end face of the first column section 1, which is far away from the second column section 2, preferably, the holding hole 13 is an inner hexagonal hole, and the holding hole 13 facilitates a driving instrument to hold the suture anchor and smoothly screw the suture anchor into bone;

further, as shown in fig. 1-2, the pressing line anchor further comprises a second column section 2, the second column section 2 is of a prismatic structure, preferably, the second column section 2 is a square prism, the second column section 2 is located on one side of the first column section 1 and integrally formed with the first column section 1, and meanwhile, the cross-sectional diameter of the first column section 1 is larger than the width of the second column section 2, so that after the pressing line anchor is placed into the prefabricated channel, a gap exists between the second column section 2 and the prefabricated channel to provide a space for bone growth, and after the pressing line anchor is placed into bone for a period of time, the bone surrounds the second column section 2, the anti-rotation performance of the pressing line anchor is improved, and the prismatic structure further improves the anti-rotation performance;

further, as shown in fig. 1-2, in order to stably wind the medical suture 5 on the suture anchor, a plurality of winding grooves 21 are formed at the side edge of the third pillar section 3, the plurality of winding grooves 21 are spirally arranged along the third pillar section 3, and when the suture anchor is placed, the medical suture 5 is wound on the winding grooves 21, so that the stability of the medical suture 5 can be increased;

further, as shown in fig. 1-2, the pressing line anchor further comprises a third column section 3, the third column section 3 is of a conical structure, the third column section 3 is located on one side, away from the first column section 1, of the second column section 2, and the third column section 3 and the second column section 2 are integrally formed and used for increasing the pressure when the pressing line anchor is screwed in, reducing the screwing torque and avoiding bone fracture;

further, as shown in fig. 1-2, the crimping anchor further comprises a fourth column section 4, the fourth column section 4 is of a cylindrical structure, is located between the second column section 2 and the third column section 3, and is integrally formed with the second column section 2 and the third column section 3, the cross-sectional diameter of the fourth column section 4 is larger than the width of the second column section 2, a second thread 41 is arranged on the fourth column section 4, when the crimping anchor is screwed in, the second thread 41 at the fourth column section 4 is firstly utilized to increase a screwing force path, so that the second column section 2 is conveniently and smoothly placed into the prefabricated channel;

further, as shown in fig. 3, the second screw thread 41 includes a thread protrusion a and a thread groove b, an end surface of a cross section of the thread protrusion a is a flat surface, and a cross section of the thread groove b is an arc-shaped concave surface, and functions as the first screw thread 11.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides an anti-rotatory anti-dial line ball anchor which characterized in that, the line ball anchor includes:

the first column section is of a cylindrical structure;

the second column section is of a prismatic structure, is positioned on one side of the first column section and is integrally formed with the first column section;

the third column section is of a conical structure and is positioned on one side, far away from the first column section, of the second column section, and the third column section and the second column section are integrally formed;

the cross-sectional diameter of the first column section is greater than the width of the second column section.

2. The anti-rotational anti-tap anchor of claim 1, wherein:

the pressing line anchor also comprises a fourth column section, wherein the fourth column section is of a cylindrical structure and is positioned between the second column section and the third column section;

the diameter of the cross section of the fourth column section is larger than the width of the second column section.

3. The anti-rotational anti-tap anchor of claim 2, wherein:

the first column section is provided with a first thread;

and a second thread is arranged on the fourth column section.

4. The anti-rotational anti-tap anchor of claim 3, wherein: the first or second threads comprise:

the end surface of the cross section of the thread bulge is a plane;

the cross section of the thread groove is an arc concave surface.

5. The anti-rotational anti-pullout anchor according to any one of claims 1-4, wherein: be provided with on the first column section lateral wall and dodge the groove, dodge the groove both ends and extend to the outer edge of first column section.

6. The anti-rotational anti-pullout anchor according to any one of claims 1-4, wherein: and a plurality of winding grooves are formed in the side edges of the third column section, and are spirally arranged along the third column section.

7. The anti-rotational anti-pullout anchor according to any one of claims 1-4, wherein: and a holding hole is formed in the end face, far away from the second column section, of one end of the first column section.

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