CN211583317U

CN211583317U - Anchor for fixing soft tissue for orthopedics and assembling tool thereof

Info

Publication number: CN211583317U
Application number: CN201922396087.XU
Authority: CN
Inventors: 王明军; 孙杨; 罗鹏; 何明; 赵金忠; 蒋佳
Original assignee: Shenzhen Corliber Scientific Co ltd; Shanghai Sixth Peoples Hospital
Current assignee: SHENZHEN CORLIBER SCIENTIFIC Co.,Ltd.
Priority date: 2017-12-30
Filing date: 2018-12-30
Publication date: 2020-09-29
Anticipated expiration: 2028-12-30
Also published as: CN109793544A; CN112971885A; CN108523954A; CN208725787U; CN108403173B; CN112971886A; CN108403173A; CN209018822U; CN112971886B; CN209996455U; CN112971885B

Abstract

The utility model provides an anchor nail of fixed soft tissue in an aspect, it includes: the nail body is in a long strip shape, threads are arranged on the periphery of the nail body, at least two grooves along the length direction of the nail body are further arranged on the periphery of the nail body, the grooves penetrate through the nail body along the length direction of the nail body, the at least two grooves are uniformly distributed along the periphery of the nail body, the extrusion nail is further provided with a through hole penetrating through the nail body along the length direction, and the through hole is provided with a communication hole communicated with the periphery of the nail body; and the nail head is connected with the nail body, the nail head and the nail body are integrally formed, the nail body is also provided with a threading hole which is arranged along the width direction and penetrates through the nail body, the nail body is provided with a far end close to the ligament and a near end far away from the ligament, the thread pitch of the thread at the near end is smaller than that of the thread at the far end, the width of the groove at the near end is larger than that of the groove at the far end, and the depth of the groove at the near end is larger than that of the groove at the far end.

Description

Anchor for fixing soft tissue for orthopedics and assembling tool thereof

The application is a divisional application of patent applications with application date of 2018, 12 and 30, application number of 2018222602098, and name of the invention being an orthopedic anchor for fixing soft tissue and an assembling tool thereof.

Technical Field

The utility model relates to the field of medical equipment, concretely relates to orthopedics is with anchor nail of fixed soft tissue and assembly tool thereof.

Background

Cruciate ligament injury is one of the common sports injuries in daily life. The tearing of the cruciate ligaments can directly affect the motor ability of a patient, and improper treatment can cause instability of the knee joint and secondary articular cartilage damage, and finally affect the function of the knee joint. At present, the cruciate ligament reconstruction under an arthroscope by utilizing bone nails is one of the main treatment means of cruciate ligament injury. Fix the tendon in the bone tunnel through the bone nail, guarantee the healing of tendon, can also prevent that the tendon from removing in the bone tunnel and causing the tunnel to enlarge.

The first clinically used non-absorbable metal bone screws. The metal bone nail has the advantages of high material strength and firm fixation. However, since the metal bone nail is not absorbed by human body, if the metal bone nail stays in the human body permanently, the metal bone nail will bring certain harm to the human health. For example, osteolysis around the bone pins or exposure of the bone pins results in damage to the articular cartilage, formation of synovitis, and the like. In addition, some metal bone nails can be affected in the nuclear magnetic resonance examination, so that the nuclear magnetic resonance examination cannot be performed on the patient. If the patient is taken out by operation, secondary damage is caused to the patient, and more complications can be caused.

For this reason, bone nails made of absorbable materials have been developed. After years of improvement, the strength of the bone nail made of the absorbable material is greatly improved, and the characteristic of absorbability after implantation greatly reduces inconvenience and injury to patients. However, in clinical operation, the improved absorbable material has lower strength compared with metal, and is easy to cause slippery condition in use. Once the slippery thread appears, the doctor can hardly take out the failed bone nail, which brings inconvenience to the doctor.

In addition, because the bone nail made of the absorbable material is not uniformly degraded when degraded in a bone tunnel, the bone tissue is not uniformly grown, even the fixation strength of the bone nail is insufficient, and the loosening and displacement are caused, thereby bringing great hidden trouble and inconvenience to patients.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above-mentioned state of the art, and an object thereof is to provide an anchor nail capable of suppressing the risk of slippery thread and facilitating the growth of bone tissue.

To this end, the present invention provides in one aspect an anchor for fixation of soft tissue, comprising: the nail body is long, the periphery of the nail body is provided with threads, at least two grooves are further arranged on the periphery of the nail body along the length direction of the nail body, the grooves penetrate through the nail body along the length direction of the nail body, the at least two grooves are uniformly distributed along the periphery of the nail body, the anchor nail is further provided with a through hole penetrating through the nail body along the length direction, and the through hole is provided with a communication hole communicated with the periphery of the nail body; and the nail head is connected with the nail body, the nail head and the nail body are integrally formed, the nail body is further provided with a threading hole which is arranged along the width direction and penetrates through the nail body, the nail body is provided with a far end close to a ligament and a near end far away from the ligament, the thread pitch of the thread at the near end is smaller than that of the thread at the far end, the width of the groove at the near end is larger than that of the groove at the far end, and the depth of the groove at the near end is larger than that of the groove at the far end.

The utility model discloses in, owing to be provided with the recess more than two at least in the periphery of anchor nail, consequently, the doctor can reduce the possibility that takes place smooth silk phenomenon when using assembly utensil wrench movement anchor nail, can improve doctor's operating efficiency. In addition, the groove penetrates through the nail body along the length direction of the nail body, so that the nail body is beneficial to discharging bone fragments when being implanted into bone tissues, and meanwhile, the threading hole penetrates through the nail body along the width direction, so that the nail body can have higher structural strength. In addition, when the bone tissue grows, the bone tissue tends to grow at the groove, so that the bone tissue can find a force application point to promote repair of a damaged part, an occlusion structure can be formed with the anchor, the possibility of displacement of the anchor is reduced, and the anchor can be prevented from loosening better.

In addition, in an anchor nail for fixing soft tissue according to an aspect of the present invention, optionally, the threading hole is provided in the nail head and penetrates the nail head. Thereby, while the structural strength of the anchor is ensured, the tissue can be sutured by the suture.

In addition, in an anchor nail for fixing soft tissue according to an aspect of the present invention, optionally, the nail head has at least two first threading holes and second threading holes arranged along the length direction, each of the threading holes is spaced apart from each other, and the through hole penetrates to the second threading hole. Therefore, the suture can be conveniently knotted in the anchor.

In addition, in an anchor for fixing soft tissue according to an aspect of the present invention, optionally, the nail body is made of one selected from medical stainless steel, platinum, titanium alloy, titanium-nickel memory alloy, cobalt-chromium alloy, and magnesium alloy, and the material of the nail body is polyetheretherketone. In this case, by manufacturing the anchor using the above material, the material strength of the anchor can be made high, the fixation is firm, the possibility of occurrence of slipping and the possibility of displacement in the bone tunnel are reduced, and the material strength of the anchor made of the polyetheretherketone material is close to that of the bone, whereby the possibility of occurrence of stress shielding can be reduced, and the anchor can be taken out without a secondary operation.

Further, in an anchor for fixing soft tissue according to an aspect of the present invention, the thread is optionally a tooth-type thread having a chamfer of a flat top type or a dome type. Therefore, the friction force between the anchor and the bone tunnel can be increased, and cutting damage to the ligament can be avoided.

In addition, in an anchor for fixing soft tissue according to an aspect of the present invention, optionally, the proximal end of the nail body further has a columnar projection along the length direction. Therefore, the assembly tool can be matched with the assembly tool, and the assembly tool can be conveniently twisted.

Further, in an anchor for fixing soft tissue according to an aspect of the present invention, the nail head is optionally formed in a tapered shape. Thereby, implantation into a bone tunnel can be facilitated.

In addition, in the anchor bolt for fixing a ligament according to an aspect of the present invention, optionally, a lubricating liquid is injected to the outer periphery of the bolt body through the through hole. This reduces the possibility of secondary injury to the anchor as it moves through the bone tunnel.

In addition, in an anchor for a fixation ligament according to an aspect of the present invention, optionally, when the anchor is implanted in a bone tunnel of a bone tissue, generated bone fragments are discharged along the groove. This facilitates the discharge of residual bone fragments.

Furthermore, another aspect of the present invention provides an assembling tool for an anchor for fixing soft tissue in orthopedics, which is characterized in that the assembling tool is used for operating the anchor according to any one of the above items. Therefore, implantation of the anchor can be facilitated.

According to the utility model discloses, provide one kind can restrain smooth silk risk and be favorable to bone tissue growth's anchor nail and assembly utensil of operation anchor nail.

Drawings

Fig. 1 is a perspective view showing an angle of an anchor for fixing soft tissue according to an embodiment of the present invention.

Fig. 2 is a perspective view showing another angle of the anchor for fixing soft tissue according to the embodiment of the present invention.

Fig. 3 is a plan view illustrating an anchor for fixing soft tissue according to an embodiment of the present invention.

Fig. 4 is a perspective view showing another example of the anchor for fixing soft tissue according to the embodiment of the present invention.

Fig. 5 is a perspective sectional view showing an anchor for fixing soft tissue according to an embodiment of the present invention.

Fig. 6 is a plan sectional view showing an anchor for fixing soft tissue according to an embodiment of the present invention.

FIG. 7 is a partial schematic view showing the anchor stud of FIG. 6.

Fig. 8 is a plan view showing an anchor according to an embodiment of the present invention.

Fig. 9 is a perspective view showing an anchor attachment according to an embodiment of the present invention.

Fig. 10 is a bottom view showing an anchor attachment according to an embodiment of the present invention.

Fig. 11 is a perspective view schematically showing the engagement of the anchor and the fitting according to the embodiment of the present invention.

Reference numerals:

1 … anchor, 11 … nail body, 111 … groove, 112 … through hole, 12 … nail head, 121 … first threading hole, 122 … second threading hole, 2 … accessory, 21 … holding part, 22 … supporting leg and 23 … positioning post.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same components are denoted by the same reference numerals, and redundant description thereof is omitted. The drawings are schematic and the ratio of the dimensions of the components and the shapes of the components may be different from the actual ones.

It is noted that the terms "comprises," "comprising," and "having," and any variations thereof, in the present disclosure, such that a process, method, system, article, or apparatus that comprises or has a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include or have other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 is a perspective view showing an angle of an anchor bolt 1 for fixing soft tissue according to an embodiment of the present invention.

In the present embodiment, the anchor 1 may include the shank 11. The nail body 11 may be in an elongated shape, the outer periphery of the nail body 11 has threads, and at least two grooves 111 are further provided along the length direction of the nail body 11 at the outer periphery of the nail body 11, the grooves 111 penetrate through the nail body 11 along the length direction of the nail body 11, wherein the nail body 11 further has threading holes (121, 122) provided along the width direction. The anchor 1 according to the present embodiment is also sometimes referred to as a bone anchor, a bone nail, or the like in the field of orthopedic implantation.

In the present embodiment, when the anchor 1 for fixing soft tissue according to the present embodiment is used, the entire anchor is inserted into the bone tunnel and connected to the bone tissue by the suture, whereby the bone tissue can be fixed and repaired. Through the utility model provides an anchor 1 passes through anchor fixing with soft tissue such as ligament effectively, guarantees the healing of ligament.

Fig. 2 is a perspective view showing another angle of the anchor bolt 1 for fixing soft tissue according to the embodiment of the present invention. Fig. 3 is a plan view showing anchor stud 1 for fixing soft tissue according to an embodiment of the present invention. Fig. 4 is a perspective view showing another example of the anchor bolt 1 for fixing soft tissue according to the embodiment of the present invention. Fig. 5 is a plan sectional view showing anchor stud 1 for fixing soft tissue according to an embodiment of the present invention.

In the present embodiment, as shown in fig. 1 and 2, the anchor 1 for fixing soft tissue according to the present embodiment may include a nail body 11. The nail body 11 may be elongated. In some examples, the shank 11 may be cylindrical. The nail body 11 may have a cylindrical shape, a tapered shape, a truncated cone shape, an irregular shape, or the like. Thus, the nail body 11 can be in different shapes according to different application scenes.

Generally, when using the anchor 1 for soft tissue fixation and repair, it is generally first necessary to form a bone tunnel in bone tissue by drilling (e.g., by an electric drill machine). Then, the anchor nail 1 is implanted into the bone tunnel and the soft tissue is fixed by the suture, thereby playing roles of fixing the soft tissue and repairing.

In addition, in the present embodiment, the anchor 1 may further include a nail head 12 connected to the nail body 11. In the case of an anchor 1 with a head, the anchor 1 may comprise a shank 11 and a head 12, where the line of demarcation of the shank 11 from the head 12 is not absolute, but only schematically illustrated in fig. 5.

In some examples, head 12 may be cylindrical, with the larger diameter side of head 12 being connected to shank 11. Thereby, entry of the anchor 1 into the bone tunnel can be facilitated.

In other examples, head 12 may also be tapered. Thereby, access into the bone tunnel can be facilitated.

In some examples, threading holes (121, 122) may be provided in the stud and extend through the stud 12. This ensures the structural strength of the anchor 1 and also allows tissue to be sutured by the suture.

In some examples, the nail body 11 may have only one threading hole 123 (see fig. 4). Specifically, the threading hole 123 may penetrate the nail head 12 in the width direction.

In some examples, the proximal end of the shank also has a protrusion (not shown) along the length. Thereby, it is possible to engage with an attachment 2 (described later), facilitating twisting of the attachment. In some examples, the protrusion may be cylindrical. In particular, the protrusions may be, for example, cylindrical, prismatic, or other irregular shapes. This facilitates twisting of the attachment 2.

In other examples, the nail body 11 may have at least two threading holes (121, 122) arranged along the length direction, and the respective threading holes (121, 122) are spaced apart from each other. This facilitates the suture to be knotted in the anchor 1. In some examples, the nail body 11 may have a first threading hole 121 and a second threading hole 122 (see fig. 5). Wherein, the first threading hole 121 and the second threading hole 122 are spaced from each other.

In some examples, the suture may dispose a knot inside the anchor 1. In this case, the knot provided on the surface of the bone can be prevented from being released due to friction or the like, and the stability of the suture can be improved.

In other examples, the threading holes (121, 122) may be configured in a shape such as a circle, an oval, a square, a hexagon socket, a cross socket, and the like.

In other examples, head 12 and shank 11 may be integrally formed. In this case, the head 12 and the shank 11 are formed integrally, whereby the separation of the head 12 and the shank 11 from each other during the operation of the anchor 1 can be avoided, thereby avoiding the possibility of the anchor 1 slipping off due to the separation.

In addition, in the present embodiment, the material of the anchor 1 may be one or more selected from the group consisting of a polylactic acid material, polycaprolactone, polydioxanone, and polyglycolic acid. In addition, in some examples, the material of anchor stud 1 may also be selected from one or more of lactide, caprolactone, more than two-membered random copolymer or block copolymer among p-dioxanone and glycolide. Furthermore, in other examples, anchor stud 1 may also be comprised of one or more of Polyorthoesters (POE), polyamphosphine, polycaprolactone, polyester urethane, polyanhydride-imine copolymers, polyhydroxybutyrate and copolymers thereof, and polyamino acids (PAA).

In other examples, the material of anchor 1 may also be polyetheretherketone. In this case, the material strength of the anchor 1 made of a polyetheretherketone material is close to that of the bone, so that the possibility of stress shielding can be reduced and the anchor can be removed without a secondary operation.

In the present embodiment, by using the anchor 1 made of the above-described material, not only the secondary extraction operation can be avoided, but also various inconveniences caused by leaving the metal anchor 1 in the body, such as failure of the nuclear magnetic resonance examination, or inflammation such as synovitis, etc., can be avoided. In addition, the anchor 1 made of absorbable material such as polylactic acid (PLA) has an effect of promoting bone tissue healing.

In the present embodiment, the anchor 1 may further be composed of one or more of medical stainless steel, platinum, titanium alloy, titanium-nickel memory alloy, cobalt-chromium alloy, or magnesium alloy. In this case, the anchor 1 can also effectively function to fix soft tissue. Since the above material is relatively low in price and high in material strength, fixation is firm, and it is more excellent in terms of reducing the possibility of occurrence of sliding and displacement in a bone tunnel, compared with an absorbable material.

Fig. 7 is a partial schematic view showing the anchor stud 1 shown in fig. 6. Fig. 8 is a plan view showing an anchor stud 1 according to an embodiment of the present invention.

Referring to fig. 1, the outer circumference of the shank 11 may have a screw thread. In the present embodiment, the thread provided on the outer periphery of the shank 11 may be a thread of a thread type. This can increase the frictional force between the anchor 1 and the bone tunnel.

In the present embodiment, the outer periphery of the shank 11 may be provided with UNR threads. The UNR thread is also a uniform thread with constant pitch at the root of the circular arc.

In some examples, the threads may also be provided as a round root coarse series unified thread (UNRC), a round root fine series unified thread (UNRF), a round root ultra fine series unified thread (UNREF), or a round root special series unified thread (UNRS).

In other examples, the thread may also be a standard coarse huh series, a standard english standard BS84 english thread with 55 angles (b.s.w.) a standard fine huh series, a general purpose cylindrical thread (b.s.f.), an additional optional huh series, a general purpose cylindrical thread (whit.s), a non-standard thread of huh type (Whit), a uniform thread of constant pitch (UN), a uniform thread of coarse series (UNC), a uniform thread of fine series (UNF), a uniform thread of ultra fine series (UNEF), or a uniform thread of special Series (UNs). In this case, different threads can be selected according to different use environments, so that the anchor bolt 1 can be adapted to different application scenarios.

In addition, as shown in fig. 8, in the present embodiment, the nail body 11 may further have a distal end close to the soft tissue and a proximal end far from the soft tissue along the length direction. Here, for convenience of explanation, both ends of the nail body 11 are divided into a distal end which contacts tissue or soft tissue first and a proximal end opposite to the distal end in the order in which the nail body 11 enters the bone tunnel.

In this embodiment, the screw thread provided on the outer periphery of the nail body 11 has a distal thread pitch H1 larger than a proximal thread pitch H2, that is, the distal thread is looser than the proximal thread. In this case, the distal thread is relatively sparse (i.e., the pitch is relatively large) compared to the proximal thread, so that when the nail body 11 is implanted into a bone tunnel, the distal portion of the nail body 11 can reduce soft tissue damage in the bone tunnel, and the proximal portion of the nail body 11 can increase the friction between the anchor 1 and the bone tunnel, thereby facilitating the entry and fixation of the anchor 1 into the bone tunnel.

In addition, as shown in fig. 6 and 7, in the present embodiment, the crest of the thread provided on the outer periphery of the nail body 11 may have a chamfer. In the present embodiment, θ may be equal to the sum of flank angles on both sides of the crest, for example, 30 to 60 °. This reduces the possibility of secondary damage to the bone tunnel and soft tissue by the anchor 1.

In other examples, the chamfer of the crest of the thread provided at the outer periphery of the nail body 11 may be flat-top type or dome type. Thereby, the sharpness of the thread of the anchor 1 can be reduced, and the soft tissue can be prevented from being cut and damaged by the anchor 1.

In addition, at least two grooves 111 along the longitudinal direction of the nail body 11 may be further provided on the outer circumference of the nail body 11. Wherein, the groove 111 may penetrate the nail body 11 along the length direction of the nail body 11.

In some examples, the outer circumference of the nail body 11 may be provided with two (two) and more than two grooves 111 along the length direction of the nail body 11. In addition, as described above, the groove 111 may also penetrate the nail body 11 along the length direction of the nail body 11, that is, the length of the groove 111 may be substantially equal to the length of the nail body 11. In this case, during the implantation of the anchor 1 into a bone tunnel, for example, bone tissue, the produced bone chips or bone fragments can be easily discharged along the grooves 111.

In some examples, the length of the groove 111 may be slightly less than the length of the shank 11. In addition, the depth of the groove 111 may be smaller than the outer radius of the nail body 11. In some examples, the tack body 11 may also have a distal end proximal to the soft tissue and a proximal end distal to the soft tissue along the length. In this case, by deepening the recess 111 of the proximal end, the proximal end is more easily adapted to the mounting tool 2.

In the present embodiment, the grooves 111 (in the present embodiment, the

grooves

111a and 111b) may be equiangularly distributed therebetween, for example, in the case where three grooves are provided, the

grooves

111a and 111b may be equiangularly distributed. That is, the

grooves

111a and 111b may be uniformly distributed along the outer circumference of the nail body 11. In this case, the anchor stud 1 is stressed evenly, which further reduces the possibility of wire slippage.

Furthermore, in other examples, each of the grooves 111 may be distributed at different angles, for example, in the case of providing three grooves 111, the grooves 111a and the grooves 111b may be distributed at different angles. In this case, by arranging the grooves 111 at non-equal angles, it is possible to guide the growth of bone tissue in the direction of the grooves 111, which is more suitable in the case where there is a special requirement for the growth of bone tissue.

As above, through set up two and more than two recesses 111 in anchor 1 periphery for the doctor can utilize recess 111 increase moment of torsion when using assembly 2 wrench movement anchor 1, thereby can only need less power can wrench movement anchor 1, and then avoided leading to the possibility that the smooth silk phenomenon appears because of local stress is too big, in addition, can further improve operating personnel's such as doctor operating efficiency.

In addition, in the present embodiment, since the groove 111 may penetrate the nail body 11 along the longitudinal direction of the nail body 11, the bone tissue may grow at the groove 111 first during the growth, which is not only beneficial for the bone tissue to find the acting point to promote the repair of the damaged portion, but also beneficial for forming an engagement structure with the anchor 1 to reduce the possibility of the displacement of the anchor 1. In addition, the discharge of bone chips or bone dregs is facilitated.

In addition, as above, the shank 11 may also have a distal end that is proximal to (or newly proximal to) the soft tissue and a proximal end that is distal from (or later proximal to) the soft tissue along the length. Further, the groove 111 in the outer periphery of the nail body 11 has a width at the proximal end larger than that of the groove 111 at the distal end. In this case, the anchor stud 1 can facilitate the evacuation of the remaining bone fragments by pressing out the bone fragments from the bone tunnel by means of the recesses 111 during the entry into the bone tunnel.

As shown in fig. 3 and 5, in the present embodiment, the anchor 1 may further include a through hole 112 penetrating the shank 11 in the longitudinal direction. The through hole 112 may serve as a positioning function of a fitting tool of the anchor bolt 1 described later, whereby the through hole 112 can be conveniently operated.

In the present embodiment, the through hole 112 penetrates to the second threading hole 122 along the longitudinal direction. This allows the jig 2 to be positioned efficiently through the through-hole 112.

In some examples, the through-hole 112 may be a cylindrical through-hole. In other examples, the through-holes 112 may also be triangular, square, irregular, etc. In this case, the force range of the anchor 1 can be increased by the through-hole 112 when the attachment 2 is used, thereby stabilizing the force, bone fragments can be discharged through the through-hole 112, and positioning can be performed when matching with the attachment 2.

In addition, in some examples, the through hole 112 may further have a communication hole (not shown) communicating with the outer circumference of the nail body 11. Thereby, when the anchor bolt 1 is extracted, the lubricating liquid is injected to the outer periphery of the bolt body 11 through the through hole 112, so that the friction force between the anchor bolt 1 and the bone tunnel is reduced, and the extraction of the anchor bolt 1 is facilitated. In some examples, a plurality of communication holes (not shown) may be provided through which the through-holes 112 communicate with the outer circumference of the nail body 11.

Fig. 9 is a perspective view showing the anchor assembling tool 2 according to the embodiment of the present invention. Fig. 10 is a bottom view showing the anchor assembling tool 2 according to the embodiment of the present invention. Fig. 11 is a schematic perspective view showing the engagement of the anchor stud 1 and the attachment 2 according to the embodiment of the present invention.

Hereinafter, the harness 2 for operating the anchor bolt 1 for fixing soft tissue will be described in detail with reference to fig. 9 to 11.

The mounting tool 2 according to the present embodiment includes: a grip portion 21; two or more legs 22 provided to the holding part 21 so as to extend from the holding part 21, the legs 22 being insertable into the recess 111 of the anchor 1; and positioning posts 23 provided between the legs 22 and fitted into the through holes 112 of the anchor 1. In this case, the assembling tool 2 can embed each component into the corresponding position of the anchor bolt 1 when in use, so as to play the roles of stably bearing force and preventing wire sliding.

When implanting the anchor 1 into, for example, a bone tunnel, the fixture 2 and the anchor 1 may be first assembled together, wherein the legs 22 and the positioning posts 23 of the fixture 2 are inserted into the corresponding positions of the recesses 111 and the through holes 112 of the anchor 1, respectively (see fig. 11). Next, the anchor bolt 1 is inserted to a certain position (bone tunnel) by operating the attachment 2 (specifically, the grip portion 21 of the attachment 2). The anchor 1 can then be pushed into position to a suitable depth by manipulating (e.g. rotating clockwise) the fitting 2, thereby securing the anchor 1, for example together with soft tissue, within a bone tunnel. Finally, the fixture 2 is removed along the recess 111 of the anchor stud 1.

In some examples, the mounting tool 2 may also be provided with a recess that mates with a protrusion of the nail body 11 in place of the locating post 23 (not shown). This enables different anchor bolts 1 to be engaged.

In the present embodiment, the grip portion 21 may have an elongated shape. Thereby, it is possible to facilitate handling and use. In some examples, the grip 21 may also be spherical, conical, or irregular in shape. This can be applied to a case where different gripping methods are required.

In this embodiment, the legs 22 may be tapered. In this case, the portion of the leg 22 near the grip portion 21 is more stable and is less likely to break when being biased.

In some examples, the feet 22 may also be of uniform size. Therefore, the difficulty of the manufacturing process is reduced.

In this embodiment, the legs 22 may lie on the circumference of the same circle, as seen in the direction of the length of the legs 22. This enables the structure of the anchor 1 to be engaged.

In the present embodiment, the individual legs 22 may be arranged in an equiangular manner. That is, the individual legs 22 may be evenly distributed over the circumference. Therefore, the force applied to the anchor 1 is uniform, and the phenomena of thread slipping and breaking of the supporting legs 22 are prevented.

In the present embodiment, there may be three legs 22 arranged in an equiangular manner. Thereby, a good stability can be obtained with a minimum number of legs 22 used. In other examples, legs 22 may be non-equiangularly arranged, in which case the location of legs 22 may be used in conjunction with the location of the recess of a particular anchor 1 by providing legs 22 at non-equiangular positions.

In the present embodiment, the grip portion 21 is integrally formed with the leg 22. This can prevent the occurrence of falling off, breakage, or the like.

In the present embodiment, the handle may be provided in a direction orthogonal to the grip portion 21. Therefore, a better use effect can be obtained during twisting. In addition, in some examples, the handle may penetrate the grip portion 21 in a penetrating manner along the orthogonal direction of the grip portion 21. In other examples, the handle may be connected to the grip portion 21 in a non-penetrating manner. Thereby, a convenient holding position can be provided when twisting the anchor bolt 1, so that a better holding effect can be obtained.

In this embodiment, the length of the leg 22 may be equal to the length of the recess 111 of the anchor 1. In this case, the entire anchor bolt 1 can be simultaneously energized, and the possibility of breaking the legs 22 is reduced while enhancing the efficiency of the energizing force.

In other examples, the length of the leg 22 may also be less than the length of the recess 111 of the anchor 1. In this case, grooves of different lengths can be accommodated.

In the present embodiment, the length of the positioning post 23 may be the same as the length of the through hole 112 of the anchor 1. In this case, the positioning post 23 is inserted into the through hole 112 to exert a stable force and prevent the wire from slipping.

In some examples, the length of the positioning post 23 may also be smaller than the length of the through hole 112 of the anchor bolt 1. This allows for accommodating through holes 112 of different lengths.

In the present embodiment, the positioning column 23 may be a cylinder. Additionally, in some examples, the positioning post 23 may also be a triangular prism, a rectangular parallelepiped, or a polyhedron. This makes it possible to adapt to different shapes of the through hole 112 of the anchor 1.

While the present invention has been described in detail in connection with the drawings and the examples, it is to be understood that the above description is not intended to limit the present invention in any way. The present invention may be modified and varied as necessary by those skilled in the art without departing from the true spirit and scope of the invention, and all such modifications and variations are intended to be included within the scope of the invention.

Claims

1. An anchor nail for fixing soft tissue for orthopedics department is characterized in that,

the method comprises the following steps:

the nail body is long, the periphery of the nail body is provided with threads, at least two grooves are further arranged on the periphery of the nail body along the length direction of the nail body, the grooves penetrate through the nail body along the length direction of the nail body, the at least two grooves are uniformly distributed along the periphery of the nail body, the anchor nail is further provided with a through hole penetrating through the nail body along the length direction, and the through hole is provided with a communication hole communicated with the periphery of the nail body; and

a nail head connected with the nail body and integrally formed with the nail body,

the nail body is provided with a far end close to the ligament and a near end far away from the ligament, the thread pitch of the near end is smaller than that of the thread of the far end, the width of the groove of the near end is larger than that of the groove of the far end, and the depth of the groove of the near end is larger than that of the groove of the far end.

2. The anchor for fixing soft tissue in orthopaedics according to claim 1,

the threading hole is arranged on the nail head and penetrates through the nail head.

3. The anchor for fixing soft tissue in orthopaedics according to claim 2,

the nail head is provided with at least two first threading holes and two second threading holes which are arranged along the length direction, the threading holes are spaced from each other, and the through holes penetrate through the second threading holes.

4. The anchor for fixing soft tissue in orthopaedics according to claim 1,

the nail body is made of one of medical stainless steel, platinum, titanium alloy, titanium-nickel memory alloy, cobalt-chromium alloy or magnesium alloy, and the nail body is made of polyether-ether-ketone.

5. The anchor for fixing soft tissue in orthopaedics according to claim 1,

the threads are of a profile with a chamfer of a flat top or dome type.

6. The anchor for fixing soft tissue in orthopaedics according to claim 1,

the proximal end of the shank also has a cylindrical protrusion along the length.

7. The anchor for fixing soft tissue in orthopaedics according to claim 1,

the nail head is gradually contracted.

8. The anchor for fixing soft tissue in orthopaedics according to claim 1,

lubricating liquid is injected to the periphery of the nail body through the through hole.

9. The anchor for fixing soft tissue in orthopaedics according to claim 1,

when the anchor is implanted in a bone tunnel of bone tissue, the generated bone fragments are discharged along the grooves.

10. An anchor bolt assembly, which is characterized in that,

is a fitting tool for fitting the anchor for fixing soft tissue for orthopedics according to any one of claims 1 to 9.