Intramedullary nail assembly

Abstract

The utility model discloses an intramedullary nail assembly which comprises an intramedullary nail body and a plurality of lock nails. A through hole matched with the lock is formed in the near end of the intramedullary nail main body; and the far end of the intramedullary nail is provided with a positioning notch matched with the nail body part of the lock nail. Through the through hole which is formed in the near end of the intramedullary nail main body and matched with the lock nail and the positioning notch which is formed in the far end of the intramedullary nail main body and matched with the lock nail body part, the implanting and locking processes of the intramedullary nail are simplified; due to the design of the positioning notch, especially the U-shaped structure, the structure with the inverted-V-shaped opening and the structure with the arc-shaped bottom, the lock nail can be more accurately combined with the intramedullary nail body, aiming difficulty caused by deformation of the intramedullary nail in the operation process is reduced, and therefore the complexity of operation is reduced, and the operation time is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially is involved in a kind of intramedullary nail assembly. BACKGROUND

[0002] Intramedullary nail is a long strip implant, usually used in internal fixation treatment after fracture. It mainly disperses pressure by hitting into bone marrow and being in close contact with the inside of skeleton to achieve the effect of fixing and treating fracture. At present, the implantation steps of mainstream intramedullary nail are to implant main nail first, then aim at distal end and proximal end nail hole, implant locking pin, complete fracture fixation, and the main function of locking pin is to limit the axial movement of the two ends of broken bone and prevent the rotation of intramedullary nail main nail in bone cavity.

[0003] However, the interface distance of intramedullary nail distal end from external aiming bracket is far, and the intramedullary nail main nail will be deformed unpredictably due to the difference of arc of different human bodies, which leads to aiming nail hole difficulty, and the assembly of aiming bracket itself is also complex, which increases the operation time.

[0004] Therefore, it is necessary to design an intramedullary nail assembly to solve the above problems. CONTENT OF UTILITY MODEL

[0005] The utility model aims at the deficiency of prior art, and provides an intramedullary nail assembly

[0006] The technical scheme of the utility model is: an intramedullary nail assembly, comprising intramedullary nail body and a plurality of locking pins; the proximal end of the intramedullary nail body is provided with a through hole matched with locking; the distal end of the intramedullary nail is provided with a positioning notch matched with the shank part of the locking pin.

[0007] The positioning notch is in U shape.

[0008] The mouth part of the positioning notch is in "eight" shape.

[0009] The bottom of the positioning notch is provided in arc shape and matches with the shank part of the locking pin.

[0010] The material of the intramedullary nail is titanium alloy or carbon material.

[0011] By adopting the above technical scheme, the utility model has the following beneficial effects: (1) the utility model is provided with the through hole matched with locking at the proximal end of the intramedullary nail body and the positioning notch matched with the shank part of the locking pin at the distal end, which simplifies the implantation and locking process of the intramedullary nail; the design of the positioning notch, especially the structure of U shape, "eight" shape of the mouth part and arc shape of the bottom, makes the locking pin more accurately combined with the intramedullary nail body, reduces the aiming difficulty caused by the deformation of the intramedullary nail in the operation process, and thus reduces the complexity of operation and operation time.

[0012] (2) The precise design of the positioning gap ensures the firm connection between the locking pin and the intramedullary nail body, effectively limits the axial movement of the two ends of the fractured bone, and prevents the rotation of the main nail of the intramedullary nail in the bone cavity. This stable fixing method helps the healing of the fracture site and reduces the risk of complications caused by unstable fixation.

[0013] (3) The present application simplifies the surgical procedure and accurately positions the locking pin, reduces the trauma and exposure time during the operation, thereby reducing the risk of surgical infection and improving the overall treatment effect of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the content of the present application more easily understood, the present application will be further described in detail below according to specific embodiments and in conjunction with the accompanying drawings.

[0015] Figure 1 The structure of the present application is shown in the figure.

[0016] The reference numbers in the drawings are:

[0017] The intramedullary nail body 1, the plurality of locking pins 2, and the positioning gap 3. DETAILED DESCRIPTION

[0018] (Example 1)

[0019] See Figure 1 The intramedullary nail assembly of the present embodiment comprises an intramedullary nail body 1 and a plurality of locking pins 2. The proximal end of the intramedullary nail body 1 is provided with a through hole matched with the locking pin. The distal end of the intramedullary nail is provided with a positioning gap 3 matched with the shank part of the locking pin 2.

[0020] Further, the positioning gap 3 is in the shape of a U.

[0021] Further, the mouth part of the positioning gap 3 is in the shape of an "eight" character.

[0022] Further, the bottom part of the positioning gap 3 is provided in an arc shape and is in conformity with the shank part of the locking pin 2.

[0023] The design of the positioning gap 3 of the present application, especially the structure of the U shape, the "eight" character shape of the mouth part, and the arc shape of the bottom part, enables the locking pin 2 to be more accurately combined with the intramedullary nail body 1, reduces the aiming difficulty caused by the deformation of the intramedullary nail during the operation, and thus reduces the complexity of the operation and the operation time.

[0024] Further, the material of the intramedullary nail is titanium alloy or carbon material, which not only improves the strength and durability of the intramedullary nail, but also reduces the rejection reaction in the patient's body due to its good biocompatibility, which is helpful for postoperative recovery.

[0025] The intramedullary nail assembly of the embodiment simplifies the implantation and locking process of the intramedullary nail, reduces the aiming difficulty caused by the deformation of the intramedullary nail during the operation, and thus reduces the complexity of the operation and the operation time.

[0026] The embodiment significantly improves the operation precision, stability and safety of the fracture internal fixation by the innovative structural design and material selection, and provides better treatment effect and faster recovery speed for the patient.

[0027] The above specific embodiments further specifically describe the purpose, technical scheme and beneficial effects of the utility model, and it should be understood that the above description is only for specific embodiments of the utility model and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. An intramedullary nail assembly, characterized by: The invention relates to an intramedullary nail, comprising a nail body (1) and several locking pins (2), wherein the proximal end of the nail body (1) is provided with a through hole matching the locking pins, and the distal end of the nail body is provided with a positioning notch (3) matching the shank of the locking pins (2).

2. An intramedullary nail assembly as defined in claim 1, wherein: The positioning notch (3) is in the shape of a U.

3. The intramedullary nail assembly of claim 1, wherein: The opening of the positioning notch (3) is in the shape of an "8".

4. The intramedullary nail assembly of claim 1, wherein: The bottom of the positioning notch (3) is arc-shaped and matches the shank of the locking pins (2).

5. The intramedullary nail assembly of claim 1, wherein: The material of the intramedullary nail is titanium alloy or carbon material.

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