Adjustable front end insertion structure of bone nail

Abstract

The utility model discloses an adjustable front end insertion structure of a bone nail, which comprises an insertion structure main body, a bone nail rod structure and a fastening screw, and is characterized in that the insertion structure main body comprises an insertion seat, a stud arranged at the top of the insertion seat, a conical block arranged at the top end of the stud and a plurality of liquid discharge grooves formed in the outer side of the insertion seat; the bone nail rod structure comprises a bone nail rod main body in threaded connection with the stud and a conical surface arranged on the inner side of the bone nail rod main body, and the fastening screw is in threaded connection with the insertion seat and the bone nail rod main body. Through the arrangement of the insertion structure main body and the fastening screw, under the condition that the use of the bone nail is not influenced, the effect of replacing insertion structures with different diameters is achieved, the bone nail is suitable for different implantation requirements and individual differences of patients, the use range is large, meanwhile, the insertion structures can be rapidly installed, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of the front-end insertion structure of bone nails, in particular to an adjustable front-end insertion structure of a bone nail. Background Art

[0002] The front-end insertion structure of bone nails is usually designed to ensure stable fixation on bones while reducing damage to surrounding tissues. The front-end insertion structure of bone nails is generally made of medical titanium or titanium alloy, which has good elasticity and bone compatibility. The elastic characteristics can be used to finely adjust the diameter to adapt to different implantation requirements and individual differences of patients. However, this elasticity is not equivalent to direct diameter adjustment, and the range of diameter adjustment is limited, which does not adapt to different implantation requirements and individual differences of patients, and has a small scope of use. Therefore, we propose an adjustable front-end insertion structure of a bone nail. Summary of the Utility Model

[0003] Therefore, the purpose of the utility model is to provide an adjustable front-end insertion structure of a bone nail. By setting an insertion structure main body and a fastening screw, the effect of replacing insertion structures with different diameters can be achieved without affecting the use of the bone nail, which is applicable to different implantation requirements and individual differences of patients, has a large scope of use, and can quickly install the insertion structure, saving time and effort.

[0004] To solve the above technical problems, according to one aspect of the utility model, the following technical solutions are provided:

[0005] An adjustable front-end insertion structure of a bone nail, comprising:

[0006] An insertion structure main body, including an insertion seat provided, a stud provided on the top of the insertion seat, and a tapered block provided at the top end of the stud;

[0007] A bone nail rod structure, including a bone nail rod main body threadedly connected to the stud and a tapered surface provided inside the bone nail rod main body;

[0008] A fastening screw, threadedly connected to the stud and the bone nail rod main body.

[0009] As a preferred scheme of the adjustable front-end insertion structure of a bone nail described in the utility model, wherein, the insertion structure main body further includes a plurality of drain grooves provided on the outer side of the insertion seat, and the plurality of drain grooves are arranged in a circumferential pattern.

[0010] As a preferred scheme of the adjustable front-end insertion structure of a bone nail described in the utility model, wherein, the insertion seat and the stud are of a hollow structure, and a first screw hole is provided on the stud.

[0011] As a preferred embodiment of the adjustable front-end insertion structure of a bone nail according to the present invention, the bone nail rod structure further includes a groove formed on the outer side of the bone nail rod body and a second screw hole formed on the inner wall of the groove.

[0012] As a preferred embodiment of the adjustable front-end insertion structure of a bone nail according to the present invention, an internal thread for connecting a stud is provided inside the bone nail rod body.

[0013] As a preferred embodiment of the adjustable front-end insertion structure of a bone nail according to the present invention, there are two fastening screws, and the two fastening screws are symmetrically arranged.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By providing an insertion structure main body and fastening screws, the effect of replacing insertion structures with different diameters can be achieved without affecting the use of the bone nail, which is applicable to different implantation requirements and individual differences of patients, has a large range of use, and at the same time, the insertion structure can be quickly installed, saving time and effort. When in use, the user can rotate the fastening screw outward until the fastening screw is completely separated from the bone nail rod body. After separation, the insertion structure main body can be rotated until the insertion structure main body is completely separated from the bone nail rod body, and then it can be disassembled. After disassembly, an insertion structure main body with a suitable diameter can be selected to align with the bone nail rod body and be inserted and connected. After insertion, rotating the fastening screw can fix the insertion structure main body, achieving the effect of replacing insertion structures with different diameters, being applicable to different implantation requirements and individual differences of patients, having a large range of use, and during the insertion connection process, through the cooperation of the conical block and the conical surface, the insertion structure main body can be quickly inserted into the bone nail rod body, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0016] Figure 1 is a three-dimensional structure diagram of an adjustable front-end insertion structure of a bone nail according to the present invention;

[0017] Figure 2 is an adjustable front-end insertion structure of a bone nail according to the present invention Figure 1 a three-dimensional structure diagram of the insertion structure main body in;

[0018] Figure 3 is an adjustable front-end insertion structure of a bone nail according to the present invention Figure 1Schematic structural diagram of the middle bone screw rod structure.

[0019] In the figure: 100, insertion structure main body; 101, insertion seat; 102, drain groove; 103, stud; 104, first screw hole; 105, tapered block.

[0020] 200, bone screw rod structure; 201, bone screw rod main body; 202, groove; 203, second screw hole; 204, internal thread; 205, tapered surface.

[0021] 300, fastening screw. Specific implementation manners

[0022] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings.

[0023] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0024] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When describing the embodiments of the present utility model in detail, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in a half scale, and the schematic diagrams are only examples, which should not limit the protection scope of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0025] In order to make the purpose, technical solution, and advantages of the present utility model clearer, the following will further describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0026] The present utility model provides an adjustable front-end insertion structure for a bone screw. By setting an insertion structure main body and a fastening screw, the effect of replacing insertion structures with different diameters can be achieved without affecting the use of the bone screw, which is suitable for different implantation requirements and individual differences of patients, has a large range of use, and can quickly install the insertion structure, saving time and effort.

[0027] Figures 1-3 Shown is a schematic diagram of the overall structure of an embodiment of an adjustable front-end insertion structure for a bone screw of the present utility model. Please refer to Figures 1-3 , the main body part of an adjustable front-end insertion structure for a bone screw in this embodiment includes: an insertion structure main body 100, a bone screw rod structure 200, and a fastening screw 300.

[0028] Specifically, the insertion structure body 100 includes a provided insertion base 101, a stud 103 arranged on the top of the insertion base 101, and a tapered block 105 arranged at the top end of the stud 103. The insertion structure body 100 further includes a plurality of drain grooves 102 arranged on the outer side of the insertion base 101. The plurality of drain grooves 102 are arranged in a circular pattern. The insertion base 101 and the stud 103 are hollow structures. A first screw hole 104 is provided on the stud 103. During use, the hollow structure facilitates the passage of marrow fluid through the insertion base 101 and the stud 103, avoiding the obstruction of the marrow fluid to the insertion of the insertion structure body 100. The insertion and removal of the insertion structure body 100 are facilitated through the stud 103. The insertion of the insertion structure body 100 is facilitated by the plurality of drain grooves 102, and the discharge of the marrow fluid is also facilitated. The first screw hole 104 can be threadedly connected to the fastening screw 300, so as to fix the insertion structure body 100 through the fastening screw 300.

[0029] Specifically, the bone screw rod structure 200 includes a bone screw rod main body 201 threadedly connected to the stud 103 and a tapered surface 205 arranged on the inner side of the bone screw rod main body 201. The bone screw rod structure 200 further includes a groove 202 provided on the outer side of the bone screw rod main body 201 and a second screw hole 203 provided on the inner wall of the groove 202. An internal thread 204 for connecting the stud 103 is arranged on the inner side of the bone screw rod main body 201. During use, the insertion structure body 100 can be rotated outwards until the insertion structure body 100 is completely separated from the bone screw rod main body 201, and then the insertion structure body 100 can be disassembled. After disassembly, an insertion structure body 100 with a suitable diameter can be selected to align with the bone screw rod main body 201 and be inserted and connected, achieving the effect of replacing the insertion structure body 100 with different diameters, being applicable to different implantation requirements and patient individual differences, having a large range of use. During the insertion and connection process, through the cooperation of the tapered block 105 and the tapered surface 205, the insertion structure body 100 can be quickly inserted into the bone screw rod main body 201, saving time and effort.

[0030] Specifically, the fastening screw 300 is threadedly connected to the stud 103 and the bone screw rod main body 201. There are two fastening screws 300, and the two fastening screws 300 are symmetrically arranged. During use, both of the two fastening screws 300 can fix the insertion structure body 100 on the bone screw rod structure 200, and their symmetry can improve the stability, effectively avoiding the harm caused to the user due to the loosening of the insertion structure body 100.

[0031] Combined with Figures 1-3, An adjustable front-end insertion structure of a bone nail according to this embodiment. During specific use, the user can rotate the fastening screw 300 outward until the fastening screw 300 is completely separated from the bone nail rod main body 201. After separation, the insertion structure main body 100 can be rotated outward until the insertion structure main body 100 is completely separated from the bone nail rod main body 201, then the insertion structure main body 100 can be disassembled. After disassembly, an insertion structure main body 100 with a suitable diameter can be selected, aligned with the bone nail rod main body 201, and inserted and connected. After insertion, rotating the fastening screw 300 can fix the insertion structure main body 100, achieving the effect of being able to replace the insertion structure main body 100 with different diameters, which is applicable to different implantation requirements and individual differences of patients, has a large range of use, and during the insertion and connection process, through the cooperation of the tapered block 105 and the tapered surface 205, the insertion structure main body 100 can be quickly inserted into the bone nail rod main body 201, saving time and effort.

[0032] Although the present utility model has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present utility model can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. An adjustable front end insertion structure of a bone screw, characterized in that: include: An insertion structure body (100) comprises an insertion seat (101), a stud (103) arranged on the top of the insertion seat (101), and a conical block (105) arranged on the top of the stud (103); A bone screw rod structure (200) comprises a bone screw rod body (201) threadedly connected to the stud (103) and a tapered surface (205) arranged on the inner side of the bone screw rod body (201); A fastening screw (300) is threadedly connected to the stud (103) and the bone screw rod body (201).

2. The adjustable front end insertion structure of a bone screw according to claim 1, characterized in that: The insertion structure body (100) further comprises a plurality of drainage grooves (102) arranged outside the insertion seat (101), and the plurality of drainage grooves (102) are arranged in a circumferential manner.

3. The adjustable front end insertion structure of a bone screw according to claim 2, characterized in that: The insertion seat (101) and the stud (103) are hollow structures, and a first screw hole (104) is provided on the stud (103).

4. The adjustable front end insertion structure of a bone screw according to claim 3, characterized in that: The bone screw rod structure (200) further comprises a groove (202) formed on the outside of the bone screw rod body (201) and a second screw hole (203) formed on the inner wall of the groove (202).

5. The adjustable front end insertion structure of a bone screw according to claim 4, characterized in that: An internal thread (204) for connecting to the screw (103) is provided on the inner side of the bone screw rod body (201).

6. The adjustable front end insertion structure of a bone screw according to claim 5, characterized in that: Two fastening screws (300) are provided, and the two fastening screws (300) are symmetrically arranged.

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