Anatomical locking lock intramedullary nail

Abstract

The utility model discloses a dissection locking lock intramedullary nail and relates to the field of medical instruments, the dissection locking lock intramedullary nail comprises a linear nail body, an arc nail body, a fixing plate and a fixing nail, the arc nail body is arranged at one end of the linear nail body in the length direction, the fixing plate is obliquely arranged at the other end of the linear nail body in the length direction, and the fixing plate is attached to the clavicle; the fixing nail penetrates through the fixing plate and is fixed in the clavicle in a threaded mode. According to the intramedullary nail, the linear nail body, the arc nail body, the fixing plate and the fixing nail are utilized, firstly, the intramedullary nail is inserted into the clavicle from the end of the arc nail body, the arc nail body and the linear nail body are located in the clavicle, the fixing plate is located outside the clavicle and attached to the clavicle, then the fixing nail penetrates through the fixing plate, and threads of the fixing nail are fixed into the clavicle. The fixing nail fixes the linear nail body and the arc nail body through the fixing plate, so that the intramedullary nail is installed in the clavicle more stably, the arc nail body is matched with the shape of the clavicle, the fixing plate is attached to the clavicle, the appearance of the intramedullary nail is attached to the clavicle, and foreign body sensation of a patient is reduced.

Description

Technical Field

[0001] The present application relates to the field of medical devices, and in particular to an anatomical locking intramedullary nail. Background Art

[0002] Clavicular intramedullary nail is an internal fixation device specially used for the treatment of clavicle fractures. It is inserted into the clavicle medullary cavity to fix the fracture ends, ensure the stability of the fracture site, and promote fracture healing. Clavicular intramedullary nail has the advantages of simple operation, firm fixation, less trauma, and fast recovery, and is widely used in clinical practice.

[0003] At present, the shape of the existing clavicle intramedullary nail does not fit the clavicle. After the intramedullary nail is installed, the patient will have a foreign body sensation during the rehabilitation process due to the mismatch between the shape of the intramedullary nail and the clavicle. The internal fixation device may even be displaced, resulting in partial loss of fracture reduction, which is not conducive to the patient's rehabilitation. Utility Model Content

[0004] In order to reduce the foreign body sensation during use of the intramedullary nail and improve the stability of the intramedullary nail installation, the present application provides an anatomical locking intramedullary nail.

[0005] The present application provides an anatomical locking intramedullary nail adopts the following technical solution:

[0006] An anatomical locking intramedullary nail comprises a straight nail body, an arc nail body, a fixing plate and a fixing nail, wherein the arc nail body is fixedly mounted at one end of the straight nail body in the length direction, the fixing plate is fixedly mounted at an angle at the other end of the straight nail body in the length direction, the fixing plate is fitted on the clavicle, and the fixing nail passes through the fixing plate and is threadedly fixed in the clavicle.

[0007] By adopting the above technical scheme, when installing the intramedullary nail, the intramedullary nail is first inserted into the clavicle from the end of the arc nail body, the arc nail body and the straight nail body are located in the clavicle, the fixing plate is located outside the clavicle and fits the clavicle, and then the fixing nail is passed through the fixing plate and the fixing nail thread is fixed in the clavicle. The fixing nail fixes the straight nail body and the arc nail body through the fixing plate, so that the intramedullary nail is installed more stably in the clavicle. At the same time, the arc nail body adapts to the shape of the clavicle, and the fixing plate fits on the clavicle, so that the shape of the intramedullary nail fits the clavicle, reducing the patient's foreign body sensation during the rehabilitation process.

[0008] Preferably, a threaded hole is provided in the fixing plate, the nail body of the fixing nail passes through the threaded hole and is threadedly fixed in the clavicle, and the nail head of the fixing nail is threadedly installed in the threaded hole.

[0009] By adopting the above technical solution, when using a fixing nail for fixation, the fixing nail is passed through the threaded hole, the nail body of the fixing nail is threadedly fixed in the clavicle, and the nail head of the fixing nail is threadedly fixed in the threaded hole, so that the fixing effect of the fixing nail on the fixation plate is better, thereby further improving the stability of the intramedullary nail installation.

[0010] Preferably, the top opening end of the threaded hole is expanded outward, and the nail head of the fixing nail is located in the expanded opening of the threaded hole.

[0011] By adopting the above technical solution, when the fixing nail is threadedly fixed in the clavicle, the nail head of the fixing nail is received in the outer expansion opening of the threaded hole, so that the fixing nail will not extend out of the fixing plate, thereby further improving the adaptability of the intramedullary nail and reducing the patient's foreign body sensation.

[0012] Preferably, the angle between the fixing plate and the straight nail body is between 130° and 140°.

[0013] By adopting the above technical solution, the angle between the fixing plate and the straight nail body is between 130° and 140°, which makes it easier for the fixing plate to fit on the clavicle.

[0014] Preferably, the angle between the fixing plate and the straight nail body is a rounded angle.

[0015] By adopting the above technical solution, the angle between the fixing plate and the straight nail body is rounded, which further improves the adaptability of the intramedullary nail and reduces the foreign body sensation of the patient.

[0016] Preferably, the end of the arc nail body away from the straight nail body forms a sharp corner.

[0017] By adopting the above technical solution, the sharp corner facilitates the arc nail body to be inserted into the clavicle.

[0018] Preferably, a plane wall is formed at one end of the side wall of the arc nail body close to the sharp corner.

[0019] By adopting the above technical solution, during the process of inserting the arc nail body into the clavicle, the plane wall guides the arc nail body, thereby facilitating the insertion of the arc nail body and the straight nail body into the clavicle.

[0020] Preferably, the width of the arc nail body at the plane wall gradually decreases along the direction from the straight nail body to the arc nail body.

[0021] By adopting the above technical solution, the width of the arc nail body gradually decreases, and the width of the arc nail body near the sharp corner is the smallest, thereby further facilitating the insertion of the arc nail body into the clavicle.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. When installing the intramedullary nail using a straight nail body, an arc nail body, a fixing plate and a fixing nail, first insert the intramedullary nail into the clavicle from the end of the arc nail body, the arc nail body and the straight nail body are located inside the clavicle, the fixing plate is located outside the clavicle and fits the clavicle, then the fixing nail is passed through the fixing plate and the fixing nail is threadedly fixed inside the clavicle, the fixing nail fixes the straight nail body and the arc nail body through the fixing plate, so that the intramedullary nail is installed more stably inside the clavicle, and at the same time, the arc nail body is adapted to the shape of the clavicle, the fixing plate is fitted on the clavicle, so that the shape of the intramedullary nail fits the clavicle, and the foreign body sensation of the patient is reduced during the rehabilitation process;

[0024] 2. With the help of a fixing nail, when using the fixing nail for fixation, the nail body of the fixing nail is passed through the threaded hole, the nail body of the fixing nail is threadedly fixed in the clavicle, and the nail head of the fixing nail is threadedly fixed in the threaded hole, so that the fixing effect of the fixing nail on the fixation plate is better, thereby further improving the stability of the intramedullary nail installation;

[0025] 3. By utilizing sharp corners and plane walls, the sharp corners facilitate the insertion of the end of the arc nail body into the clavicle. During the insertion of the arc nail body into the clavicle, the plane walls guide the arc nail body, thereby facilitating the insertion of the arc nail body and the straight nail body into the clavicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the anatomical locking intramedullary nail installed in the clavicle for this application;

[0027] Figure 2 This is a schematic diagram of the overall structure of the anatomical locking intramedullary nail of this application;

[0028] Figure 3 A top view of the anatomical locking intramedullary nail for this application;

[0029] Figure 4 An exploded view of part of the mechanism of the anatomical locking intramedullary nail for this application.

[0030] Figure numerals: 1, straight nail body; 2, arc nail body; 3, fixing plate; 4, fixing nail; 5, threaded hole; 7, sharp corner; 8, rounded corner; 9, plane wall. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-Figure 4 This application is described in further detail.

[0032] The embodiment of the present application discloses an anatomically locked intramedullary nail.

[0033] Reference Figure 1 and Figure 2An anatomical locking intramedullary nail includes a straight nail body 1, an arc nail body 2, a fixing plate 3 and a fixing nail 4. The straight nail body 1, the arc nail body 2 and the fixing plate 3 are integrally formed. The arc nail body 2 is located at one end of the straight nail body 1 in the length direction, and the fixing plate 3 is located at the other end of the straight nail body 1 in the length direction.

[0034] Reference Figure 2 and Figure 3 The end of the arc nail body 2 away from the straight nail body 1 is formed with a sharp corner 7, and the sharp corner 7 is located at the top of the arc nail body 2 along the diameter direction of the arc nail body 2. A plane wall 9 is formed on the side wall of the arc nail body 2, and the plane wall 9 is located at the end of the arc nail body 2 close to the sharp corner 7. The plane wall 9 is inclined, and the width of the arc nail body 2 at the plane wall 9 gradually decreases along the straight nail body 1 toward the sharp corner 7.

[0035] After the medullary cavity of the clavicle is expanded using an electric tool, the arc nail body 2 and the straight nail body 1 are implanted into the clavicle. The width of the arc nail body 2 near the sharp corner 7 is smaller, and under the action of the sharp corner 7, the arc nail body 2 is easily inserted into the clavicle. During the process of inserting the arc nail body 2 into the clavicle, the plane wall 9 guides the movement of the arc nail body 2, thereby facilitating the arc nail body 2 and the straight nail body 1 to be inserted into the clavicle.

[0036] Reference Figure 1 and Figure 4 , the angle between the fixing plate 3 and the straight nail body 1 is between 130°-140°, and the angle between the fixing plate 3 and the straight nail body 1 is a rounded angle 8. When the straight nail body 1 is fully inserted into the clavicle, the bottom of the fixing plate 3 abuts against the clavicle, and the rounded angle 8 between the fixing plate 3 and the straight nail body 1 can reduce the patient's foreign body sensation. The arc nail body 2 and the straight nail body 1 are adapted to the shape of the clavicle, and the fixing plate 3 fits on the clavicle, so that the shape of the intramedullary nail fits the clavicle, further reducing the patient's foreign body sensation.

[0037] A threaded hole 5 is provided in the middle of the fixing plate 3, and the fixing nail 4 passes through the threaded hole 5 and fixes the fixing plate 3 to the clavicle. The nail body of the fixing nail 4 passes through the threaded hole 5 and is threadedly fixed in the clavicle, and the nail head of the fixing nail 4 is threadedly fixed in the threaded hole 5, so that the fixing effect of the fixing nail 4 on the fixing plate 3 is better, thereby further improving the stability of the intramedullary nail installation.

[0038] The top opening of the threaded hole 5 is expanded outward, and when the nail head of the fixing nail 4 is installed, the nail head of the fixing nail 4 is accommodated in the expanded opening of the threaded hole 5, so that the fixing nail 4 will not extend out of the fixing plate 3, thereby further reducing the patient's foreign body sensation. At the same time, the threaded hole 5 that is expanded outward facilitates the fixing nail 4 to be inserted into the threaded hole 5.

[0039] The implementation principle of an anatomical locking intramedullary nail in an embodiment of the present application is as follows: when installing the intramedullary nail, a skin protection sleeve is placed on the clavicle, a puncture instrument passes through the skin protection sleeve, the needle insertion position is determined on the clavicle and the bone cortex is punctured, an electric tool is used to drive the threaded guide needle through the skin protection sleeve and perform medullary cavity expansion, the intramedullary nail is clamped with a clamping tool, the arc nail body 2 is slowly inserted into the medullary cavity hole, the intramedullary nail and the handle are assembled, the handle is knocked to insert the straight nail body 1 into the clavicle, a drill is used to drill a mounting hole on the clavicle at the threaded hole 5, the fixing nail 4 is threadedly fixed in the clavicle mounting hole and the threaded hole 5, the fixing plate 3 can be fixed, and then the arc nail body 2 and the straight nail body 1 can be fixed, so that the intramedullary nail is installed more stably in the clavicle, and at the same time, the arc nail body 2 adapts to the shape of the clavicle, and the fixing plate 3 fits on the clavicle, so that the shape of the intramedullary nail fits the clavicle, reducing the patient's foreign body sensation during the rehabilitation process.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anatomical locking intramedullary nail, characterized in that: The invention comprises a straight nail body (1), an arc nail body (2), a fixing plate (3) and a fixing nail (4); the arc nail body (2) is fixedly mounted at one end of the straight nail body (1) in the length direction; the fixing plate (3) is fixedly mounted at an angle at the other end of the straight nail body (1) in the length direction; the fixing plate (3) is fitted on the clavicle; and the fixing nail (4) passes through the fixing plate (3) and is threadedly fixed in the clavicle.

2. The anatomical locking intramedullary nail according to claim 1, characterized in that: A threaded hole (5) is provided in the fixing plate (3); the nail body of the fixing nail (4) passes through the threaded hole (5) and is threadedly fixed in the clavicle; and the nail head of the fixing nail (4) is threadedly installed in the threaded hole (5).

3. The anatomical locking intramedullary nail according to claim 2, characterized in that: The top opening end of the threaded hole (5) is expanded outward, and the nail head of the fixing nail (4) is located in the expanded opening of the threaded hole (5).

4. The anatomical locking intramedullary nail according to claim 1, characterized in that: The angle between the fixing plate (3) and the straight nail body (1) is between 130° and 140°.

5. The anatomical locking intramedullary nail according to claim 4, characterized in that: The included angle between the fixing plate (3) and the straight nail body (1) is a rounded angle (8).

6. The anatomical locking intramedullary nail according to claim 1, characterized in that: The end of the arc nail body (2) away from the straight nail body (1) is formed with a sharp corner (7).

7. The anatomical locking intramedullary nail according to claim 6, characterized in that: A plane wall (9) is formed at one end of the side wall of the arc nail body (2) close to the sharp corner (7).

8. The anatomical locking intramedullary nail according to claim 7, characterized in that: The width of the arc nail body (2) at the plane wall (9) gradually decreases along the direction from the straight nail body (1) to the arc nail body (2).

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