An intramedullary pin fixation device

Abstract

The utility model discloses an intramedullary needle fixing device, including locking nail, the outside of locking nail is provided with first clamping block and second clamping block respectively, all are seted up with the perforation on first clamping block and second clamping block, be provided with intramedullary needle between first clamping block and second clamping block, the surface of first clamping block and second clamping block all are seted up with recess. This intramedullary needle fixing device, first clamping block and second clamping block hold one end of intramedullary needle, and are fixed on the bone through locking nail, can prevent intramedullary needle from happening to separate and deflect, promote the stability of intramedullary needle use, and the occlusal muscle can promote the stability of intramedullary needle clamping.

Description

Technical Field

[0001] This utility model relates to the field of intramedullary nail technology, specifically to an intramedullary nail fixation device. Background Technology

[0002] Intramedullary nails are specialized medical devices used in orthopedic surgery to internally fix fractured portions of tubular bones.

[0003] Intramedullary fixation methods include flexible intramedullary nails and conventional Kirschner wire fixation. Their advantages include minimal dissection of surrounding soft tissue, less disruption of blood supply, less tissue damage during fixation removal, and a high fracture healing rate. However, intramedullary nails are prone to loosening, displacement, and migration, leading to a series of complications and secondary injuries. Therefore, there is an urgent need to design an intramedullary nail fixation device to address these issues. Utility Model Content

[0004] The purpose of this invention is to provide an intramedullary nail fixation device to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an intramedullary nail fixation device, comprising a locking pin, wherein a first clamping block and a second clamping block are respectively provided on the outer side of the locking pin, and both the first clamping block and the second clamping block are provided with through holes for the locking pin to pass through, and both the lower surface of the first clamping block and the upper surface of the second clamping block are provided with grooves, and when the first clamping block and the second clamping block are locked by the locking pin, the grooves on the lower surface of the first clamping block and the upper surface of the second clamping block form a channel for the intramedullary nail to pass through.

[0006] Preferably, the locking pin is threadedly connected to the through holes of the first clamping block and the second clamping block, respectively.

[0007] Preferably, the lower surface of the first clamping block and the upper contact surface of the second clamping block are complementary inclined surface structures.

[0008] Preferably, the inner wall of the groove is a recessed arc-shaped structure that matches the intramedullary needle.

[0009] Preferably, the groove openings on the first clamping block and the second clamping block are arranged facing each other vertically.

[0010] Preferably, interlocking ribs are provided at equal intervals on the inner wall of the groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the intramedullary nail fixation device has a first clamping block and a second clamping block that clamp one end of the intramedullary nail and fix it to the bone by locking nails, which can prevent the intramedullary nail from detaching and deflecting, and improve the stability of the use of the intramedullary nail, while the occlusal ligament can improve the stability of the intramedullary nail clamping. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of an intramedullary nail fixation device according to an embodiment of the present invention.

[0013] Figure 2 This is a top view of the second clamping block according to an embodiment of the present invention;

[0014] Figure 3 This is a side view of the first and second clamping blocks according to an embodiment of the present invention.

[0015] In the diagram: 1. Locking pin; 2. First clamping block; 3. Second clamping block; 4. Intramedullary nail; 5. Perforation; 6. Groove; 7. Occlusal tendon. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-3 This utility model provides an intramedullary nail fixation device, including a locking nail 1. A first clamping block 2 and a second clamping block 3 are respectively provided on the outer side of the locking nail 1. The first clamping block 2 and the second clamping block 3 are both provided with through holes 5 for the locking nail 1 to pass through. The lower surface of the first clamping block 2 and the upper surface of the second clamping block 3 are both provided with grooves 6. When the first clamping block 2 and the second clamping block 3 are locked by the locking nail 1, the grooves on the lower surface of the first clamping block 2 and the upper surface of the second clamping block 3 form a channel for the intramedullary nail 4 to pass through.

[0018] In one or more embodiments of this utility model, the locking pin 1 is threadedly connected to the through holes 5 of the first clamping block 2 and the second clamping block 3 respectively, so that the first clamping block 2 and the second clamping block 3 can be stably installed on the bone by the locking pin 1.

[0019] In one or more embodiments of this utility model, the lower surface of the first clamping block 2 and the upper contact surface of the second clamping block 3 are complementary inclined surface structures, which facilitates the first clamping block 2 and the second clamping block 3 to clamp one end of the intramedullary needle 4 in an inclined state and lead it out from the medullary cavity, so as to facilitate the cooperation and fixation by locking nail 1, first clamping block 2 and second clamping block 3.

[0020] In one or more embodiments of this utility model, the inner wall of the groove 6 is a recessed arc-shaped structure that matches the intramedullary needle 4, and the openings of the grooves 6 on the first clamping block 2 and the second clamping block 3 are arranged facing each other vertically, which is beneficial to adapt to the shape of the intramedullary needle 4 and clamp it.

[0021] In one or more embodiments of this utility model, interlocking ribs 7 are provided at equal intervals on the inner wall of the groove 6. The interlocking ribs 7 are provided to improve the stability of clamping the intramedullary nail 4.

[0022] according to Figures 1-3 As shown, when using it, first place one end of the intramedullary nail 4 into the medullary cavity, then clamp the first clamp 2 and the second clamp 3 on the end of the intramedullary nail 4 that is exposed in the medullary cavity. At this time, the first clamp 2 and the second clamp 3 stably hold the intramedullary nail 4 through the groove 6 and the occlusal ligament 7. Then use the locking nail 1 to fix the first clamp 2 and the second clamp 3 to the bone.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An intramedullary nail fixation device, characterized in that: The device includes a locking pin (1), and a first clamping block (2) and a second clamping block (3) are respectively provided on the outer side of the locking pin (1). The first clamping block (2) and the second clamping block (3) are both provided with through holes (5) for the locking pin (1) to pass through. The lower surface of the first clamping block (2) and the upper surface of the second clamping block (3) are both provided with grooves (6). When the first clamping block (2) and the second clamping block (3) are locked by the locking pin (1), the grooves on the lower surface of the first clamping block (2) and the upper surface of the second clamping block (3) form a channel for the intramedullary nail (4) to pass through.

2. The intramedullary nail fixation device according to claim 1, characterized in that: The locking pin (1) is threadedly connected to the through holes (5) of the first clamping block (2) and the second clamping block (3).

3. The intramedullary nail fixation device according to claim 2, characterized in that: The lower surface of the first clamping block (2) and the upper contact surface of the second clamping block (3) are complementary inclined surface structures.

4. The intramedullary nail fixation device according to claim 1, characterized in that: The inner wall of the groove (6) is recessed and has an arc-shaped structure that matches the intramedullary needle (4).

5. The intramedullary nail fixation device according to claim 1, characterized in that: The grooves (6) on the first clamping block (2) and the second clamping block (3) are arranged with their openings facing each other vertically.

6. An intramedullary nail fixation device according to any one of claims 1-5, characterized in that: The inner wall of the groove (6) is provided with interlocking ribs (7) at equal intervals.

Images