Radial intramedullary nail

Abstract

The utility model discloses a radial intramedullary nail which comprises an intramedullary nail body, an inclined inserting opening is formed in one end of the intramedullary nail body, an inner cavity is formed in the intramedullary nail body, anti-reverse protruding blocks are arranged on the outer wall of the intramedullary nail body, and limiting particles are arranged between the anti-reverse protruding blocks. The fixing end is connected to one end of the intramedullary nail body, a first fixing screw is installed in the fixing end, and a second fixing screw is installed in one of the anti-reverse protruding blocks. Compared with an existing device, the radial intramedullary nail has the advantages that due to the fact that the anti-reverse protruding block is in the shape with one sharp end and one square end, after implantation, the anti-reverse protruding block can be clamped with intramedullary fibers through the square structure at the rear end, the intramedullary nail can be conveniently limited and prevented from moving backwards and retreating, and the limiting particles made of medical silica gel can have the anti-skid effect; therefore, the mutual friction with intramedullary limiting can be improved, and the stability of the intramedullary nail can be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of intramedullary nails, in particular to a radial intramedullary nail. Background Art

[0002] The radius is located on the outer side of the forearm, with two ends. The radial styloid and radial head can be felt on the surface of the body. When a person falls and lands on his / her overextended hand, indirect violence can cause a fracture of the radial head or the lower end. A distal radial fracture refers to a fracture within 3 cm of the distal radial articular surface. It is the most common fracture in clinical upper limb fractures, accounting for about 1 / 6 of all fractures in the body. Intramedullary nailing is the preferred internal fixation for femoral shaft fractures. The insertion point of the femoral intramedullary nail is located in the medial pyriform fossa of the greater trochanter of the femur.

[0003] The Chinese patent with the authorization publication number CN210903305U discloses a controllable rotation anti-separation micro intramedullary nail, including a micro intramedullary nail body, a series of concave flat grooves are opened on the side of the nail body, the bottom surface of each concave flat groove is a plane or an inclined surface, and a locking nail is installed in cooperation with the concave flat groove. When the locking nail is fixed in the bone body, the side of the locking nail fits with the bottom surface of the concave flat groove, which can prevent the micro intramedullary nail body from rotating and sliding. The utility model can effectively lock the micro intramedullary nail body of a thin-diameter bone body, press the micro intramedullary nail body against the inner wall of the medullary cavity, prevent the relative rotation of the two sections of the fractured bone body, prevent the two sections from separating, and prevent the micro intramedullary nail body from sliding in the bone cavity, and can firmly fix the thin-diameter bone body such as the radius and ulna of the forearm, so that the micro intramedullary nail body plays a major fixing and restraining role, and can omit external plaster fixation, or only use plaster for short-term auxiliary fixation.

[0004] Although the intramedullary nail mentioned above can firmly fix the thin-diameter bones such as the ulna and radius of the forearm, so that the micro-intramedullary nail body plays a major fixing and restraining role, external plaster fixation can be omitted, or only short-term auxiliary fixation with plaster is used, but there is a lack of effective limiting structure on the intramedullary nail, so that during the implantation process, the intramedullary nail is easily displaced and dislocated due to the movement of the patient's limbs, thereby causing further dislocation of the fracture, which is not conducive to postoperative rehabilitation. For this reason, we propose a radial intramedullary nail. Utility Model Content

[0005] The purpose of the utility model is to provide a radial intramedullary nail to solve the problem raised in the above-mentioned background technology that due to the lack of an effective limiting structure on the intramedullary nail, the intramedullary nail is easily displaced and dislocated due to the movement of the patient's limbs during the implantation process, thereby causing further dislocation of the fracture and being unfavorable for postoperative rehabilitation.

[0006] To achieve the above object, the utility model provides the following technical solution: a radial intramedullary nail, comprising:

[0007] An intramedullary nail body, wherein one end of the intramedullary nail body is provided with an oblique insertion opening, an inner cavity is provided inside the intramedullary nail body, an outer wall of the intramedullary nail body is provided with anti-reverse protrusion blocks, and limiting particles are provided between the anti-reverse protrusion blocks;

[0008] A fixed end is connected to one end of the intramedullary nail body, a first fixing screw is installed inside the fixed end, and a second fixing screw is installed inside one of the anti-reversal protrusions.

[0009] Preferably, the oblique insertion opening is fixedly connected to the intramedullary nail body in an integral manner, and the inner cavity coincides with a horizontal center line of the intramedullary nail body.

[0010] Preferably, the anti-reversal protrusion blocks are equidistantly distributed along the outer wall of the intramedullary nail body, and the anti-reversal protrusion blocks are fixedly connected to the intramedullary nail body.

[0011] Preferably, the limiting particles are distributed equidistantly, and the limiting particles are made of medical silicone.

[0012] Preferably, the fixing end is fixedly connected to the intramedullary nail body, and the first fixing screw passes through the interior of the fixing end, and the second fixing screw passes through the interior of the first anti-reverse protrusion block.

[0013] Compared with the prior art, the present invention provides a radial intramedullary nail having the following features:

[0014] Beneficial effects:

[0015] The utility model has an anti-reverse protrusion with a pointed end and a square end, so that after implantation, the square structure at the rear end can engage with the intramedullary fibers, thereby limiting the position of the intramedullary nail and preventing it from moving backwards. The limiting particles made of medical silicone material can have an anti-slip effect, thereby improving the mutual friction with the intramedullary limit, thereby ensuring the stability of the intramedullary nail and avoiding the lack of an effective limiting structure on the intramedullary nail, which may cause the intramedullary nail to move backwards due to the movement of the patient's limbs during the implantation process, thereby causing further dislocation of the fracture and being unfavorable for postoperative rehabilitation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the enlarged structure at point A in the middle.

[0018] In the figure: 1. intramedullary nail body; 2. oblique insertion port; 3. inner cavity; 4. fixed end; 5. first fixing screw; 6. anti-reverse protrusion block; 7. limiting particles; 8. second fixing screw. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-2 , a radial intramedullary nail, comprising: an intramedullary nail body 1, an oblique insertion opening 2 is provided at one end of the intramedullary nail body 1, an inner cavity 3 is provided inside the intramedullary nail body 1, the oblique insertion opening 2 is fixedly connected to the intramedullary nail body 1 in an integrated manner, and the inner cavity 3 coincides with the horizontal center line of the intramedullary nail body 1; the oblique insertion opening 2 can facilitate the force on the head end of the intramedullary nail, so that it is convenient to implant the intramedullary nail body 1 into the body, and the inner cavity 3 can reduce the overall weight of the intramedullary nail body 1, so that it can reduce the presence of the intramedullary nail, thereby reducing the discomfort of the patient; the outer wall of the intramedullary nail body 1 is provided with anti-reverse protrusion blocks 6, and limiting particles 7 are provided between the anti-reverse protrusion blocks 6; the anti-reverse protrusion blocks 6 are equidistantly distributed along the outer wall of the intramedullary nail body 1, and the anti-reverse protrusion blocks 6 are fixedly connected to the intramedullary nail body 1; the anti-reverse protrusion blocks 6 are in a shape with one end pointed and the other end square, so that after implantation, they can be mutually engaged with the intramedullary fibers through the square structure at the rear end, which is convenient for the intramedullary nail. The limiting particles 7 are equidistantly distributed, and the limiting particles 7 are made of medical silicone; the limiting particles 7 made of medical silicone can have an anti-slip effect, thereby improving the mutual friction with the intramedullary limiting, thereby ensuring the stability of the intramedullary nail; a fixed end 4 is connected to one end of the intramedullary nail body 1, and a first fixing screw 5 is installed inside the fixed end 4, and a second fixing screw 8 is installed inside one of the anti-reverse protrusions 6; the fixed end 4 is fixedly connected to the intramedullary nail body 1, and the first fixing screw 5 passes through the inside of the fixed end 4, and the second fixing screw 8 passes through the inside of the first anti-reverse protrusion 6; the first fixing screw 5 can fix the fixed end 4, and the second fixing screw 8 can position the first anti-reverse protrusion 6, so that the intramedullary nail can be relatively positioned at two places by the first fixing screw 5 and the second fixing screw 8, thereby ensuring the fixing effect of the intramedullary nail.

[0021] Working principle: When using the radial intramedullary nail, first, the oblique insertion port 2 can facilitate the force on the head end of the intramedullary nail, thereby facilitating the implantation of the intramedullary nail body 1 into the body, and the inner cavity 3 can reduce the overall weight of the intramedullary nail body 1, thereby reducing the presence of the intramedullary nail, thereby reducing the discomfort of the patient, and then the first fixing screw 5 and the second fixing screw 8 are installed respectively, the first fixing screw 5 can fix the fixed end 4, and at the same time the second fixing screw 8 can position the first anti-reverse protrusion 6, so that the intramedullary nail can be relatively positioned at two places by the first fixing screw 5 and the second fixing screw 8, so as to ensure the fixing effect of the intramedullary nail, the limiting particles 7 made of medical silicone material can have an anti-slip effect, thereby improving the mutual friction with the intramedullary limiting, thereby ensuring the stability of the intramedullary nail, the anti-reverse protrusion 6 is in a shape with one end pointed and the other end square, so that during use, the square structure at the rear end can be mutually engaged with the intramedullary fibers, which is convenient for limiting the intramedullary nail and preventing it from moving backward. This is the working principle of the radial intramedullary nail.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A radial intramedullary nail, It is characterized in that include: An intramedullary nail body (1), wherein one end of the intramedullary nail body (1) is provided with an oblique insertion opening (2), an inner cavity (3) is provided inside the intramedullary nail body (1), an anti-reverse protrusion block (6) is provided on the outer wall of the intramedullary nail body (1), and limiting particles (7) are provided between the anti-reverse protrusion blocks (6); A fixed end (4) is connected to one end of the intramedullary nail body (1), a first fixing screw (5) is installed inside the fixed end (4), and a second fixing screw (8) is installed inside one of the anti-reverse protrusions (6).

2. A radial intramedullary nail according to claim 1, It is characterized in that The oblique insertion opening (2) is fixedly connected to the intramedullary nail body (1) in an integrated manner, and the inner cavity (3) coincides with the horizontal center line of the intramedullary nail body (1).

3. A radial intramedullary nail according to claim 1, It is characterized in that The anti-reverse protrusion blocks (6) are distributed at equal distances along the outer wall of the intramedullary nail body (1), and the anti-reverse protrusion blocks (6) are fixedly connected to the intramedullary nail body (1).

4. The radial intramedullary nail according to claim 1, It is characterized in that The limiting particles (7) are distributed at equal distances from each other, and the limiting particles (7) are made of medical silica gel.

5. The radial intramedullary nail according to claim 1, It is characterized in that The fixed end (4) is fixedly connected to the intramedullary nail body (1), and the first fixing screw (5) passes through the interior of the fixed end (4), and the second fixing screw (8) passes through the interior of the first anti-reverse protrusion block (6).

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