CN217772411U

CN217772411U - Anchoring nail

Info

Publication number: CN217772411U
Application number: CN202221391243.9U
Authority: CN
Inventors: 吴显; 王文波; 杨洋
Original assignee: NINGBO HICREN BIOTECHNOLOGY CO LTD
Current assignee: NINGBO HICREN BIOTECHNOLOGY CO LTD
Priority date: 2022-06-06
Filing date: 2022-06-06
Publication date: 2022-11-11
Anticipated expiration: 2032-06-06

Abstract

The utility model discloses an anchor nail, include: nail form main part and helicitic texture, helicitic texture set up in the surface of nail form main part, nail form main part has a head end and a tail end, helicitic texture's thread cross-section is the orientation the crooked crotch form setting of tail end, nail form main part has a line connecting portion, line connecting portion are used for being connected with a suture. Through the application of the utility model, the anchor with the wire with the hook-shaped thread structure is provided, the binding force between the anchor and the bone can be effectively improved, thereby ensuring the stability of the implanted anchor and avoiding secondary damage to the patient as much as possible; just the utility model discloses simple structure, convenient to use.

Description

Anchoring nail

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an anchor nail.

Background

Sports medicine is a discipline used to prevent and treat injuries associated with physical exercise of sports, mainly for ligament and soft tissue repair, in conjunction with arthroscopic or minimally invasive surgery, and generally treats a range of joint injuries including knee, shoulder, foot, ankle, hip, elbow, wrist, and the like, as well as osteoarthrosis. In sports medical operations, the tendon or soft tissue is usually sewn and reconnected and fixed with the bone by using implants such as screws, anchors, buttons and the like, so as to achieve functional reconstruction, wherein in a common method, the anchors with the suture are implanted into the bone and form an anchor with the bone, and then the suture on the anchors is connected to reconnect and fix the soft tissue such as the tendon and the ligament and the like, so as to achieve the purpose of treatment. However, the threaded portion of the conventional suture anchor has poor binding force with the bone, is easy to be separated from the bone, and is easy to cause secondary injury to a patient.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the above problems, an object of the present invention is to provide an anchor bolt, including: nail form main part and helicitic texture, helicitic texture set up in the surface of nail form main part, nail form main part has a head end and a tail end, helicitic texture's thread cross-section is the orientation the crotch form that the tail end set up, nail form main part has a line connecting portion, line connecting portion are used for being connected with a suture.

In another preferred embodiment, the thread section has a first edge and a second edge, the second edge is disposed away from the nail-shaped body relative to the first edge, and the first edge and the second edge are both disposed in a direction from the head end to the tail end and are gradually inclined outward.

In another preferred embodiment, a first included angle is formed by the intersection of the extension line of the first side part and the axis of the nail-shaped main body, a second included angle is formed by the intersection of the extension line of the second side part and the axis of the nail-shaped main body, and the first included angle is larger than the second included angle.

In another preferred embodiment, the thread structure includes: first screw thread portion and second screw thread portion, first screw thread portion with second screw thread portion follows the length direction of nail form main part sets gradually, first screw thread portion for second screw thread portion is close to the head end setting of nail form main part, the external diameter of first screw thread portion is along keeping away from be the tapered setting on the direction of second screw thread portion.

In another preferred embodiment, the tail end of the nail-shaped body is provided with a screwing hole along the axial direction of the nail-shaped body.

In another preferred embodiment, the nail-shaped body is radially provided with a threading hole, and the threading hole forms the thread connecting part.

In another preferred embodiment, a reinforcing connecting portion is arranged in the threading hole, the reinforcing connecting portion divides the threading hole into a first hole portion and a second hole portion, and the first hole portion and the second hole portion are sequentially arranged along the axial direction of the nail-shaped main body.

In another preferred embodiment, the nail-shaped body is internally provided with a containing space.

In another preferred embodiment, the spike-shaped body is provided with at least one outflow hole, and each outflow hole is communicated with the accommodating space.

In another preferred embodiment, the head end of the nail-shaped body is further provided with a pointed head part, and the pointed head part is arranged in a conical structure.

The utility model discloses owing to adopted above-mentioned technical scheme, make it compare the positive effect that has with prior art to be: through the application of the utility model, the anchor with the wire with the hook-shaped thread structure is provided, the binding force between the anchor and the bone can be effectively improved, thereby ensuring the stability of the implanted anchor and avoiding secondary damage to the patient as much as possible; just the utility model discloses simple structure, convenient to use.

Drawings

Fig. 1 is a first schematic view of an anchor according to the present invention;

fig. 2 is a second schematic view of an anchor according to the present invention;

fig. 3 is a schematic cross-sectional view of an anchor according to the present invention;

fig. 4 is a schematic cross-sectional view of a thread of an anchor according to the present invention;

fig. 5 is a schematic view of an outflow hole of the anchor according to the present invention.

In the drawings:

1. a nail-shaped body; 2. a thread structure; 11. a head end; 12. a tail end; 21. thread cross section; 3. a wire connecting portion; 211. a first edge portion; 212. a second edge portion; 4. screwing the hole; 5. threading holes; 51. a first hole portion; 52. a second hole portion; 53. a reinforcing connecting part; 6. an accommodating space; 7. an outflow hole; 8. a tip portion.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments, which are not intended to limit the present invention.

As shown in fig. 1 to 3, there is shown an anchor of a preferred embodiment comprising: the screw comprises a nail-shaped main body 1 and a thread structure 2, wherein the thread structure 2 is arranged on the outer surface of the nail-shaped main body 1, the nail-shaped main body 1 is provided with a head end 11 and a tail end 12, a thread section 21 of the thread structure 2 is in a hook-shaped arrangement which is bent towards the tail end 12 and extends, the nail-shaped main body 1 is provided with a line connecting part 3, and the line connecting part 3 is used for being connected with a suture line. Further, the nail-shaped body 1 is a long structure, preferably, the outer contour of the radial section of the nail-shaped body 1 is circular, the screw thread structure 2 extends along the length direction of the nail-shaped body 1 and is rotatably arranged around the outer surface of the nail-shaped body 1, the head end 11 of the nail-shaped body 1 is the end which firstly enters the bone of the patient in the actual use process, the tail end 12 of the nail-shaped body 1 is the end which applies force to the medical staff in the actual use process, the screw thread section 21 is bent in a hook shape so that the screw thread structure 2 with the screw thread section 21 can be screwed into the bone of the patient in a labor-saving way, and a better bonding force can be generated between the screw thread structure 2 with the screw thread section 21 and the bone, specifically, an outer edge which is obliquely arranged is formed through the outer side of the screw thread section 21 so that the nail-shaped body 1 can enter the bone of the patient, simultaneously, the inner side of the thread section 21 is provided with an inner edge which is arranged in a concave manner, the size of the contact between the inner edge of the thread section 21 and the bone of a patient is increased through the arrangement of the inner edge, the stress condition of the thread structure 2 entering the bone of the patient is improved, the space between two adjacent thread sections in the axial direction of the nail-shaped main body is increased, the bone holding amount of the inner edge is increased, the stability of the anchor after the anchor is screwed into the bone of the patient is ensured, the anchor is not easy to be separated, in a figurative way, the anchor with the thread section 21 can be hooked into the bone of the patient in an operable manner like a hook through the hook-shaped arrangement of the thread structure 2, after the anchor is tightly connected with the bone by virtue of the thread structure 2, the suture connected on the thread connecting part 3 is operated, and the soft tissue of the patient is sutured.

Further, as a preferred embodiment, the outer profile of the radial section of the nail-shaped body 1 may be polygonal or any other cross-sectional shape that facilitates screwing into the bone of the patient.

Further, as a preferred embodiment, the thread section 21 has a first side portion 211 and a second side portion 212, the second side portion 212 is disposed away from the nail-shaped body 1 relative to the first side portion 211, and the first side portion 211 and the second side portion 212 are both disposed to be gradually inclined outward along the direction from the head end 11 to the tail end 12. Further, the first side portion 211 and the second side portion 212 are formed on the thread section 21, and the hook shape is formed by the inclined arrangement of the first side portion 211 and the inclined arrangement of the second side portion 212.

Further, as a preferred embodiment, the extension line of the first side portion 211 intersects with the axis of the nail-shaped main body 1 to form a first included angle, the extension line of the second side portion 212 intersects with the axis of the nail-shaped main body 1 to form a second included angle, and the first included angle is greater than the second included angle. Further, the first side 211 is a portion where the thread section 21 is far from the nail-shaped body 1, the second side 212 is a portion where the thread section 21 is near the nail-shaped body 1, and as shown in fig. 4, a vertical broken line in fig. 4 is an axis of the nail-shaped body 1, the first side 211 is a portion where the thread section 21 is relatively near to the axis of the nail-shaped body 1, the second side 212 is a portion where the thread section 21 is relatively far from the axis of the nail-shaped body 1, preferably, a tangent line of an outer edge of the first side 211 is an extension line of the first side 211, a tangent line of an outer edge of the second side 212 is an extension line of the second side 212, and both the first side 211 and the second side 212 are inclined at the inclination angleAt the outer edge of the arrangement, the two extension lines are shown as two dotted lines inclined in fig. 4, and θ in fig. 4 ₁ The indicated angle is the first angle, theta in fig. 4 ₂ The indicated angle is the second included angle, and any thread section 21 having the first side portion 211 and the second side portion 212 is formed with a corresponding hook shape under the limitation that the first included angle is larger than the second included angle. Meanwhile, for two adjacent thread cross sections in the axial direction of the nail-shaped main body 1, the inner edge of one thread cross section is close to the outer edge of the other thread cross section, and the outer edge is obliquely arranged in the direction away from the inner edge relative to the orientation of the second edge 212 through the first edge 211, so that the space between the outer edge and the inner edge is increased, and further the bone holding amount between the inner edge and the outer edge is increased.

Further, as a preferred embodiment, the end of the thread section 21 away from the nail-shaped body 1 is formed with a round angle. Further, the sharpness of the edge of the thread structure 2 is reduced by the edge arrangement of the rounded corners to reduce the adverse effect on the interior of the bone; in addition, the inner edge of the thread section 21 is arranged in a smooth arc shape, and the outer edge of the thread section 21 is also arranged in a smooth arc shape, so that an outer contour with a smooth outer edge and a hook-shaped bending protrusion is formed from the outer edge of the thread section 21 to the round angle and then to the inner edge.

Further, as a preferred embodiment, the tail end 12 of the nail-shaped body 1 is provided with a screwing hole 4 along the axial direction of the nail-shaped body 1. Further, by the arrangement of the screwing hole 4, the medical staff can connect the output end of a screwing instrument with the screwing hole 4 in a matching manner, so that the whole nail-shaped body 1 is applied with a screwing force through the screwing hole 4, and the nail-shaped body 1 is screwed into the bone of the patient.

Further, as a preferred embodiment, the inner contour of the screwing hole 4 may be polygonal, preferably the inner contour of the screwing hole 4 is hexagonal, and correspondingly, the output end of the screwing tool should have a matching hexagonal outer contour.

Further, as a preferred embodiment, the thread connecting portion 3 may be any structure suitable for attaching a suture, and may be a hole structure for fitting a suture or other fixing members provided on the nail-shaped body 1.

Further, as a preferred embodiment, the wire connecting portion 3 may be disposed near the head end 11 or the tail end 12 of the nail body 1 or at an intermediate position of the nail body 1.

Further, as a preferred embodiment, the nail-shaped body 1 is provided with a threading hole 5 along the radial direction, and the threading hole 5 is internally provided with a threading connection part 3. Further, the threading holes 5 penetrate through opposite sides of the outer surface of the nail body 1 in the radial direction of the nail body 1 so that the stitches allow threading connection, and the threading holes 5 are preferably provided in a kidney-shaped hole with the long axis direction thereof being arranged in parallel with the longitudinal direction of the nail body 1.

Further, as a preferred embodiment, a reinforcing connection portion 53 is provided in the threading hole 5, the reinforcing connection portion 53 divides the threading hole 5 into a first hole portion 51 and a second hole portion 52, and the first hole portion 51 and the second hole portion 52 are sequentially provided along the axial direction of the nail-shaped body 1. Further, the strength inside the threading hole 5 is increased by reinforcing the connecting portion 53, and the influence of the hole on the overall strength of the nail-shaped main body 1 is reduced, the first hole portion 51 and the second hole portion 52 are both provided in a through hole structure, and the first hole portion 51 is provided closer to the head end 11 of the nail-shaped main body 1 than the second hole portion 52.

The above is merely an example of the preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.

The utility model discloses still have following embodiment on above-mentioned basis:

in a further embodiment of the present invention, the nail-shaped body 1 is formed with a receiving space 6 inside. Further, through the arrangement of the accommodating space 6, the material consumption of the nail-shaped main body 1 is reduced, and the self weight is reduced.

As shown in fig. 5, in a further embodiment of the present invention, at least one outflow hole 7 is formed on the nail-shaped body 1, and each outflow hole 7 is communicated with the accommodating space 6. Further, in order to further enhance the connection between the anchor and the bone of the patient, the accommodating space 6 and the outflow hole 7 are matched, so that the medical staff can inject bone cement into the accommodating space 6 by means of a bone cement injector, and the bone cement flows out from the outflow hole 7, so that the gap between the anchor and the bone is filled with the bone cement.

In a further embodiment of the present invention, the length direction of the accommodating space 6 is parallel to the axial direction of the nail-shaped body.

In a further embodiment of the present invention, the outflow hole 7 is circular, elliptical, rectangular, or the like.

In a further embodiment of the present invention, at least two of the outflow holes 7 are sequentially arranged along the length direction of the nail-shaped body 1.

In a further embodiment of the present invention, each of the outflow holes 7 is disposed between any two adjacent threads along the axial direction of the nail-shaped body 1. Furthermore, the outflow hole 7 and the screw structure 2 are arranged in a staggered manner on the outer surface of the nail-shaped body 1.

The utility model discloses a further embodiment, be provided with an injection hole on nail form main part 1, this injection hole and accommodation space 6 intercommunication setting, the injection hole can set up preferably in tail end 12 of nail form main part 1, this injection hole be used for with the output matching connection of foretell bone cement syringe to form a bone cement flow channel by injection hole to accommodation space 6 to outlet 7 again.

In a further embodiment of the present invention, the injection hole and the screwing hole 4 can be the same hole, i.e. the screwing hole 4 is communicated with the accommodating space 6, so that the screwing hole 4 can be connected with the bone cement injector.

In a further embodiment of the present invention, the head end 11 of the nail-shaped body 1 is further provided with a pointed portion 8, and the pointed portion 8 is disposed in a conical structure. Furthermore, the pointed part 8 with a conical structure is arranged to facilitate the nail-shaped main body 1 to enter the bone of a patient, and the pointed part 8 can be integrated with the nail-shaped main body 1.

In a further embodiment of the present invention, the thread structure 2 includes: the nail-shaped body 1 comprises a first thread part and a second thread part, wherein the first thread part and the second thread part are sequentially connected and are arranged along the length direction of the nail-shaped body 1, the first thread part is arranged close to the head end 11 of the nail-shaped body 1 relative to the second thread part, and the outer diameter of the first thread part is gradually reduced along the direction far away from the second thread part. Furthermore, through the arrangement of the variable-diameter thread structure 2, the resistance in screwing is reduced, and the thread structure 2 can be conveniently screwed into the bone of a patient.

In a further embodiment of the present invention, the first threaded portion extends to the outer surface of the pointed portion 8 and is disposed to gradually reduce the outer diameter in the axial direction of the pointed portion 8.

In a further embodiment of the present invention, the outer diameter of the end of the first thread portion away from the second thread portion is equal to the outer diameter of the end of the pointed portion 8 close to the nail-shaped main body 1, so as to form a relatively smooth connection fit, and the first thread portion is not extended on the pointed portion 8.

The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.

Claims

1. An anchor, comprising: nail form main part and helicitic texture, helicitic texture set up in the surface of nail form main part, nail form main part has a head end and a tail end, its characterized in that, helicitic texture's thread cross-section is towards the crotch form that the tail end set up, nail form main part has a line connecting portion, line connecting portion are used for being connected with a suture.

2. The anchor of claim 1 wherein the thread cross-section has a first leg and a second leg, the second leg being disposed away from the nail body relative to the first leg, the first leg and the second leg each being disposed at a gradual outward inclination in a direction from the head end to the tail end.

3. The anchor of claim 2, wherein an extension of the first leg intersects the axis of the nail body to form a first included angle, and an extension of the second leg intersects the axis of the nail body to form a second included angle, the first included angle being greater than the second included angle.

4. The anchor of claim 1, wherein the threaded structure comprises: first screw thread portion and second screw thread portion, first screw thread portion with second screw thread portion follows the length direction of nail form main part sets gradually, first screw thread portion for second screw thread portion is close to the head end setting of nail form main part, the external diameter of first screw thread portion is along keeping away from be the tapered setting on the direction of second screw thread portion.

5. The anchor of claim 1 wherein the tail end of the nail body defines a driving bore along an axial direction of the nail body.

6. The anchor of claim 1 wherein said nail body has a threadable bore formed radially therein, said threadable bore forming said thread connection.

7. The anchor of claim 6 wherein a reinforced connection is provided within the threadway bore, the reinforced connection dividing the threadway bore into a first bore portion and a second bore portion, the first bore portion and the second bore portion being arranged in series along the axial direction of the nail body.

8. The anchor of claim 1 wherein the nail body defines a receiving space therein.

9. The anchor according to claim 8, wherein the spike body is provided with at least one outflow hole, each outflow hole being provided in communication with the receiving space.

10. The anchor of claim 1 wherein the head end of the nail body is further provided with a pointed portion, the pointed portion being disposed in a conical configuration.