Reset pedicle screw breaking component

Abstract

The utility model discloses a fracture reduction component for a pedicle screw. The fracture reduction component comprises the pedicle screw, the left side of the screw body assembly is fixedly connected with the right side of the reduction pedicle screw, the screw body assembly comprises an inner stud and a first screw arm, and the right side of the inner stud is fixedly connected with the first screw arm; and the left side of the breaking assembly is fixedly connected with the right side of the first nail arm. The fracture piece and the V-shaped fracture opening are used in cooperation, the fracture groove is pre-opened, so that the connecting face of the fracture groove is smaller, meanwhile, cut-off vibration is reduced, secondary injury to a patient after a product is fractured is effectively prevented, the fracture opening is matched with installation equipment needed in the operation process of the reduction pedicle screw, the screw body is made of stainless steel, and the fracture groove is not prone to falling off. The reduction pedicle screw has good biocompatibility and oxidation resistance and is relatively low in price, alloy steel has high strength and corrosion resistance, postoperative complications can be reduced, and the practicability of the reduction pedicle screw is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reduction pedicle screws, and specifically relates to a reduction pedicle screw breaking member. Background Technique

[0002] Patent Publication No.: CN209186907U. The utility model discloses a percutaneous pusher and a multi-axis pedicle screw, which includes an elongate fixed body part and an elongate sliding member; the elongate sliding member is slidably mounted on the elongate fixed body part; both ends of the elongate fixed body part along the length extension direction respectively form a first weak-side connection end and a sliding access end; the elongate sliding member includes a guiding part and a guiding member, the guiding part and the guiding member are integrally formed or fixedly connected, and the guiding part is slidably connected with the elongate fixed body part; both ends of the guiding member along the length extension direction respectively form a second weak-side connection end and an operating end; a breakable structure is arranged on the first weak-side connection end and / or the second weak-side connection end. The utility model also provides a multi-axis pedicle screw including the above-mentioned percutaneous pusher. The locking mechanism of the multi-axis bone anchor is connected to the end of each elongate sliding member, so that the locking mechanism can be guided to a proper position to allow locking or unlocking of the multi-axis movement, rod movement or other movement characteristics of the multi-axis bone anchor.

[0003] However, during the use of the existing reduction pedicle screws, during the operation, doctors will use special tools to apply force to the pedicle screws to break them. During the breaking process, the force needs to be precisely controlled. Excessive force or extremely small deviation is likely to cause secondary injury to the patient, affect the patient's recovery, and reduce the practicability of the reduction pedicle screws; therefore, a reduction pedicle screw breaking member is proposed for the above problems. Summary of the Invention

[0004] To solve the problems raised in the above background technique, the purpose of the present utility model is to provide a reduction pedicle screw breaking member, which has a pre-opened breaking groove, making the connection surface of the breaking groove smaller, and at the same time reducing the truncation vibration and effectively preventing secondary injury to the patient after the product is broken, and solves the problem that for the existing reduction pedicle screws, during the operation, doctors will use special tools to apply force to the pedicle screws to break them, and during the breaking process, the force needs to be precisely controlled, and excessive force or extremely small deviation is likely to cause secondary injury to the patient and affect the patient's recovery.

[0005] To achieve the above purpose, the present utility model provides the following technical solution: A reduction pedicle screw breaking member, including:

[0006] Reduction pedicle screw;

[0007] The nail body assembly, the left side of the nail body assembly is fixedly connected to the right side of the reset pedicle screw, the nail body assembly includes an inner stud and a first nail arm, and the right side of the inner stud is fixedly connected to the first nail arm;

[0008] The breaking assembly, the left side of the breaking assembly is fixedly connected to the right side of the first nail arm, the breaking assembly includes a breaking piece and a second nail arm, and the right side of the breaking piece is fixedly connected to the second nail arm.

[0009] As a preferred embodiment of the present invention, a V-shaped breaking opening is provided at the front breaking part of the breaking piece, and the V-shaped breaking opening is used in cooperation with the breaking piece.

[0010] As a preferred embodiment of the present invention, an external thread is provided on the surface of the reset pedicle screw, and the external thread is used in cooperation with the reset pedicle screw.

[0011] As a preferred embodiment of the present invention, an opening is provided in the inner cavity of the second nail arm, and the opening is used in cooperation with the second nail arm.

[0012] As a preferred embodiment of the present invention, the reset pedicle screw is made of stainless steel.

[0013] As a preferred embodiment of the present invention, the first nail arm is made of alloy steel.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The present invention is used in cooperation with a breaking piece, a V-shaped breaking opening, a reset pedicle screw, stainless steel and alloy steel. By using the breaking piece and the V-shaped breaking opening in cooperation, a pre-opened breaking groove is formed, so that the connection surface of the breaking groove is smaller, and at the same time, the truncation vibration is reduced, effectively preventing secondary injury to the patient after the product is broken. The opening cooperates with the installation equipment required during the operation of the reset pedicle screw. The nail body is made of stainless steel, which has good biocompatibility and oxidation resistance, and the price is relatively low. While alloy steel has high strength and corrosion resistance, which can reduce postoperative complications and improve the practicability of the reset pedicle screw.

[0016] 2. Through the setting of the V-shaped breaking opening, the present invention can assist the breaking piece to work and pre-open the breaking groove, making the connection surface of the breaking groove smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic three-dimensional structure diagram of the present invention;

[0018] Figure 2 is the present invention Figure 1 the schematic three-dimensional exploded structure diagram of the second nail arm in;

[0019] Figure 3 is the present inventionFigure 2 Schematic three-dimensional structure diagram of the middle breaking member.

[0020] In the figure: 1. Reducing pedicle screw; 2. Nail body assembly; 201. Inner stud; 202. First nail arm; 3. Breaking assembly; 301. Breaking member; 302. Second nail arm; 4. V-shaped breaking opening; 5. External thread; 6. Opening; 7. Stainless steel; 8. Alloy steel. Specific implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1 to 3 shown, a reducing pedicle screw breaking member provided by the present invention includes:

[0023] Reducing pedicle screw 1;

[0024] Nail body assembly 2, the left side of the nail body assembly 2 is fixedly connected to the right side of the reducing pedicle screw 1, the nail body assembly 2 includes an inner stud 201 and a first nail arm 202, and the right side of the inner stud 201 is fixedly connected to the first nail arm 202;

[0025] Breaking assembly 3, the left side of the breaking assembly 3 is fixedly connected to the right side of the first nail arm 202, the breaking assembly 3 includes a breaking member 301 and a second nail arm 302, and the right side of the breaking member 301 is fixedly connected to the second nail arm 302.

[0026] Referring to Figure 3 , a V-shaped breaking opening 4 is provided at the front breaking part of the breaking member 301, and the V-shaped breaking opening 4 is used in cooperation with the breaking member 301.

[0027] As a technical optimization scheme of the present invention, through the setting of the V-shaped breaking opening 4, the work of the breaking member 301 can be assisted, a pre-opening breaking groove is formed, and the connection surface of the breaking groove is made smaller.

[0028] Referring to Figure 1 , an external thread 5 is provided on the surface of the reducing pedicle screw 1, and the external thread 5 is used in cooperation with the reducing pedicle screw 1.

[0029] As a technical optimization scheme of the present invention, through the setting of the external thread 5, the work of the reducing pedicle screw 1 can be assisted, and the situation that the reducing pedicle screw 1 cannot be fixed is avoided.

[0030] Referring to Figure 2, an opening 6 is provided in the inner cavity of the second nail arm 302, and the opening 6 is used in cooperation with the second nail arm 302.

[0031] As a technical optimization scheme of the present utility model, through the setting of the opening 6, the second nail arm 302 can be assisted to work, and the installation device can be cooperated with the reset pedicle screw 1.

[0032] Reference Figure 1 , the material of the reset pedicle screw 1 is stainless steel 7.

[0033] As a technical optimization scheme of the present utility model, through the setting of stainless steel 7, the reset pedicle screw 1 can be assisted to work. Stainless steel 7 has good biocompatibility and oxidation resistance, and the price is relatively low. It is one of the commonly used materials for pedicle screws.

[0034] Reference Figure 2 , the material of the first nail arm 202 is alloy steel 8.

[0035] As a technical optimization scheme of the present utility model, through the setting of alloy steel 8, the first nail arm 202 can be assisted to work. Alloy steel 8 has high strength and corrosion resistance, and can reduce postoperative complications.

[0036] The working principle and usage process of the present utility model: When in use, the breaking member 301 and the V-shaped breaking opening 4 are used in cooperation to pre-open the breaking groove, so that the connection surface of the breaking groove is smaller, and at the same time, the truncation vibration is reduced, effectively preventing secondary injury to the patient after the product is broken. The opening 6 cooperates with the reset pedicle screw 1 for the installation device required during the operation. The nail body is made of stainless steel 7, which has good biocompatibility and oxidation resistance, and the price is relatively low. While alloy steel 8 has high strength and corrosion resistance, which can reduce postoperative complications and improve the practicability of the reset pedicle screw 1.

[0037] In summary: For the reset pedicle screw breaking member, through the cooperation of the reset pedicle screw 1, the nail body assembly 2, the inner stud 201, the first nail arm 202, the breaking assembly 3, the breaking member 301, the second nail arm 302, the V-shaped breaking opening 4, the external thread 5, the opening 6, stainless steel 7 and alloy steel 8, it solves the problem that for the existing reset pedicle screw, during the operation, the doctor will use a special tool to apply force to the pedicle screw to break it. During the breaking process, the force needs to be precisely controlled. Excessive force or extremely small deviation is likely to cause secondary injury to the patient and affect the patient's recovery.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0039] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A reset pedicle screw fracture member, characterized in that, Comprising: Reset pedicle screw (1); A nail body assembly (2), the left side of the nail body assembly (2) is fixedly connected to the right side of the reset pedicle screw (1), the nail body assembly (2) includes an inner stud (201) and a first nail arm (202), and the right side of the inner stud (201) is fixedly connected to the first nail arm (202); A breaking component (3), the left side of the breaking component (3) is fixedly connected to the right side of the first nail arm (202), the breaking component (3) includes a breaking piece (301) and a second nail arm (302), and the right side of the breaking piece (301) is fixedly connected to the second nail arm (302).

2. A reset pedicle screw fracture member according to claim 1, characterized in that: A V-shaped breaking opening (4) is provided at the front breaking part of the breaking piece (301), and the V-shaped breaking opening (4) is used in cooperation with the breaking piece (301).

3. A reset pedicle screw fracture member according to claim 1, characterized in that: External threads (5) are provided on the surface of the reset pedicle screw (1), and the external threads (5) are used in cooperation with the reset pedicle screw (1).

4. A reset pedicle screw fracture member according to claim 1, characterized in that: An opening (6) is provided in the inner cavity of the second nail arm (302), and the opening (6) is used in cooperation with the second nail arm (302).

5. A reset pedicle screw fracture member according to claim 1, characterized in that: The material of the reset pedicle screw (1) is stainless steel (7).

6. A reset pedicle screw fracture member according to claim 1, characterized in that: The material of the first nail arm (202) is alloy steel (8).

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