Screw guider for fixing femoral neck fracture

Abstract

The utility model discloses a screw guider for fixing femoral neck fracture, which comprises a frame, and a horizontal positioning mechanism and a vertical positioning mechanism are respectively arranged on the frame. The horizontal positioning mechanism comprises a horizontal positioning sleeve, a vertical positioning rod is arranged on the horizontal positioning sleeve in a sliding mode, and a first guide pipe is rotationally arranged at the end of the vertical positioning rod. The vertical positioning mechanism comprises a vertical positioning sleeve, a horizontal positioning rod is arranged on the vertical positioning sleeve in a sliding mode, and a second guide pipe is rotationally arranged at the end of the horizontal positioning rod. The horizontal positioning mechanism and the vertical positioning mechanism which can be movably positioned are respectively arranged on the frame, and the first guide pipe and the second guide pipe can independently rotate on the horizontal positioning mechanism and the vertical positioning mechanism respectively to adjust guide angles, so that the first guide pipe and the second guide pipe are aligned with operation marks; therefore, the locking direction of the bone screw can be accurately guided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a screw guide for fixing femoral neck fractures. Background Art

[0002] Femoral neck fracture is one of the common traumatic fractures. After the femoral neck fracture is reduced, it is usually necessary to fix it with bone screws. When fixing the distal end of the femoral neck fracture to the proximal end of the fracture, multiple bone screws are usually required to cross-lock into the distal and proximal ends of the broken bone at different angles, thereby locking the distal and proximal ends of the fracture.

[0003] Bone screws typically require a guide for guided locking, and currently commonly used screw guides are typically single-screw guides, meaning they only have a single guide structure, requiring manual adjustment of the locking position and angle of each screw. This independent guide requires manual adjustment based on experience or multiple radiographs when locking screws. Especially when locking multiple screws, the single-screw guide requires manual tilting to control the locking direction of the screws, making it difficult for the operator to accurately control the locking direction of the screws. Screws are locked into the body over a long distance from the outside of the body, and slight angular deviations may cause the distal locking position of the screw to deviate too much, thus affecting the fixation effect. Furthermore, the deviation of multiple screws may cause interference between the screws within the broken bone.

[0004] Therefore, the existing method of manually adjusting the screw locking position and angle using a single screw guide is difficult to accurately grasp the screw locking angle, which may cause the distal locking position to deviate and affect the fixation effect. Utility Model Content

[0005] The purpose of the utility model is to provide a screw guide for fixing femoral neck fractures, so as to solve the technical problem in the prior art that it is difficult to accurately grasp the locking angle of the screw, which may cause the distal locking position to deviate and affect the fixation effect.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A screw guide for fixation of femoral neck fracture, comprising:

[0008] A frame, wherein the corners of the frame are provided with fixing rods for fixing or holding;

[0009] A horizontal positioning mechanism is slidably provided on the upper and lower end sides of the frame, and the horizontal positioning mechanism includes a horizontal positioning sleeve, and a vertical positioning rod perpendicular to the sliding direction thereof is slidably provided on the horizontal positioning sleeve, and a first guide tube is rotatably provided at the end of the vertical positioning rod, and the rotation axis of the first guide tube is perpendicular to the vertical positioning rod;

[0010] A vertical positioning mechanism is slidably provided on both the left and right end sides of the frame, and the vertical positioning mechanism includes a vertical positioning sleeve, and a horizontal positioning rod perpendicular to its sliding direction is slidably provided on the vertical positioning sleeve, and a second guide tube is rotatably provided at the end of the horizontal positioning rod, and the rotation axis of the second guide tube is collinear with the axis of the horizontal positioning rod;

[0011] The horizontal positioning sleeve and the vertical positioning sleeve are both able to move freely or be locked on the frame, the vertical positioning rod and the horizontal positioning rod are respectively able to slide freely or be locked on the horizontal positioning sleeve and the vertical positioning sleeve, and the first guide tube and the second guide tube are respectively able to rotate freely or be locked on the vertical positioning rod and the horizontal positioning rod;

[0012] The rotation axis of the first guide tube is parallel to the rotation axis of the second guide tube, and the two first guide tubes and the two second guide tubes can rotate independently to adjust their guiding angles in the vertical direction.

[0013] As a preferred solution of the present invention, the horizontal positioning sleeve includes a horizontal sliding sleeve, and a vertical guide sleeve is provided on the outer wall of the horizontal sliding sleeve, and the vertical positioning rod is slidably provided in the vertical guide sleeve;

[0014] The horizontal sliding sleeve and the vertical guide sleeve are respectively provided with locking screws for locking the horizontal sliding sleeve and the vertical positioning rod;

[0015] Wherein, the axis of the vertical guide sleeve is perpendicular to the axis of the horizontal sliding sleeve.

[0016] As a preferred solution of the present invention, the vertical positioning sleeve includes a vertical sliding sleeve, and a horizontal guide sleeve is provided on the outer wall of the vertical sliding sleeve, and the horizontal positioning rod is slidably provided in the horizontal guide sleeve;

[0017] The vertical sliding sleeve and the horizontal guide sleeve are respectively provided with locking screws for locking the vertical sliding sleeve and the horizontal positioning rod;

[0018] Wherein, the axis of the horizontal guide sleeve is perpendicular to the axis of the vertical sliding sleeve.

[0019] As a preferred solution of the present invention, both the horizontal sliding sleeve and the vertical sliding sleeve can rotate freely on the frame or be locked by locking screws.

[0020] As a preferred solution of the present invention, the directions of the rotational connections between the two first guide tubes and the two vertical positioning rods are opposite.

[0021] As a preferred solution of the present invention, a T-shaped steering sleeve is rotatably mounted on one end of the vertical positioning rod facing the interior of the frame, and the first guide tube is rotatably mounted on the steering sleeve in a direction perpendicular to the vertical positioning rod;

[0022] Wherein, locking screws for locking the steering sleeve on the vertical positioning rod and for locking the first guide tube are respectively provided on the steering sleeve.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The utility model provides a movable horizontal positioning mechanism and a vertical positioning mechanism on the frame, and the first guide tube and the second guide tube can be independently rotated on the horizontal positioning mechanism and the vertical positioning mechanism to adjust the guide angle respectively, so as to ensure that the first guide tube and the second guide tube are aligned with the surgical mark, thereby providing accurate guidance for the locking direction of the bone screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0026] Figure 1 A schematic structural diagram of a screw guide for fixation of a femoral neck fracture is provided for an embodiment of the present utility model;

[0027] Figure 2 A schematic diagram of a partial structure of a horizontal positioning mechanism of a screw guide for fixation of a femoral neck fracture is provided for an embodiment of the present utility model;

[0028] Figure 3 The present invention provides a partial structural schematic diagram of a vertical positioning mechanism of a screw guide for fixation of femoral neck fractures in an embodiment of the present invention.

[0029] The numbers in the figure represent the following:

[0030] 1-frame; 2-horizontal positioning mechanism; 3-vertical positioning mechanism; 4-first guide tube; 5-second guide tube;

[0031] 11-fixed rod; 21-horizontal positioning sleeve; 22-vertical positioning rod; 23-steering sleeve; 31-vertical positioning sleeve; 32-horizontal positioning rod;

[0032] 211-horizontal sliding sleeve; 212-vertical guide sleeve; 311-vertical sliding sleeve; 312-horizontal guide sleeve. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] like Figure 1 As shown, the utility model provides a screw guide for fixing a femoral neck fracture, comprising:

[0035] Frame 1, with fixing rods 11 for fixing or holding provided at the corners of frame 1;

[0036] A horizontal positioning mechanism 2 is slidably provided on the upper and lower end sides of the frame 1. The horizontal positioning mechanism 2 includes a horizontal positioning sleeve 21, and a vertical positioning rod 22 is slidably provided on the horizontal positioning sleeve 21 and is perpendicular to the sliding direction thereof. A first guide tube 4 is rotatably provided at the end of the vertical positioning rod 22, and the rotation axis of the first guide tube 4 is perpendicular to the vertical positioning rod 22.

[0037] A vertical positioning mechanism 3 is slidably provided on both the left and right end sides of the frame 1. The vertical positioning mechanism 3 includes a vertical positioning sleeve 31, and a horizontal positioning rod 32 is slidably provided on the vertical positioning sleeve 31 and is perpendicular to the sliding direction thereof. A second guide tube 5 is rotatably provided at the end of the horizontal positioning rod 32, and the rotation axis of the second guide tube 5 is collinear with the axis of the horizontal positioning rod 32.

[0038] Among them, the horizontal positioning sleeve 21 and the vertical positioning sleeve 31 can both move freely or be locked on the frame 1, the vertical positioning rod 22 and the horizontal positioning rod 32 can slide freely or be locked on the horizontal positioning sleeve 21 and the vertical positioning sleeve 31 respectively, and the first guide tube 4 and the second guide tube 5 can rotate freely or be locked on the vertical positioning rod 22 and the horizontal positioning rod 32 respectively;

[0039] The rotation axis of the first guide tube 4 is parallel to the rotation axis of the second guide tube 5 , and the two first guide tubes 4 and the two second guide tubes 5 can rotate independently to adjust their guiding angles in the vertical direction.

[0040] The guide of this embodiment mainly utilizes two horizontal positioning mechanisms 2 sliding on the frame 1 to position the two first guide tubes 4, and utilizes two vertical positioning mechanisms 3 sliding on the frame 1 to position the two second guide tubes 5, thereby ensuring that the guide positions of the first guide tubes 4 and the second guide tubes 5 correspond to the surgical marking positions, so that the bone screws can be guided by the first guide tubes 4 and the second guide tubes 5 and accurately locked into the distal end of the broken bone.

[0041] The first guide tube 4 and the second guide tube 5 can rotate independently, so that the locking guide angle of the bone screw can be adjusted according to the locking direction set according to the broken bone situation, so that the bone screw can be accurately locked into the distal end of the broken bone.

[0042] Compared with the existing independent guide, the guide of this embodiment can adjust the horizontal position of the first guide tube 4 by moving the horizontal positioning sleeve 21, and adjust the vertical position of the first guide tube 4 by moving the vertical positioning rod 22, so that the two first guide tubes 4 can be moved to the position corresponding to the surgical mark, and the vertical positioning sleeve 31 can be moved to adjust the vertical position of the second guide tube 5, and the horizontal position of the second guide tube 5 can be adjusted by moving the horizontal positioning rod 32, so that the two second wire tubes 5 can be moved to the position corresponding to the surgical mark, and both the first guide tube 4 and the second guide tube 5 can be rotated to adjust the guide angle.

[0043] Therefore, by positioning the two first guide tubes 4 and the two second guide tubes 5 and locking the introduction angle, the locking directions of the four bone screws are fixed, effectively avoiding the situation where the locking direction is inaccurate due to manual position adjustment, which affects the fixation effect of the bone screws.

[0044] The horizontal positioning sleeve 21 is slidably mounted on the frame 1, and the vertical positioning rod 22 is slidably mounted on the horizontal positioning sleeve 21. Therefore, in order to facilitate the horizontal positioning sleeve 21 to be locked on the frame 1 and to lock the vertical positioning rod 22, the following preferred embodiments are provided.

[0045] like Figure 1 and Figure 2 As shown, the horizontal positioning sleeve 21 includes a horizontal sliding sleeve 211, and a vertical guide sleeve 212 is provided on the outer wall of the horizontal sliding sleeve 211, and the vertical positioning rod 22 is slidably provided in the vertical guide sleeve 212;

[0046] The horizontal sliding sleeve 211 and the vertical guide sleeve 212 are respectively provided with locking screws for locking the horizontal sliding sleeve 211 and the vertical positioning rod 22;

[0047] The axis of the vertical guide sleeve 212 is perpendicular to the axis of the horizontal sliding sleeve 211 .

[0048] Specifically, the axis of the horizontal sleeve 211 and the axis of the vertical guide sleeve 212 are perpendicular to each other, so that the sliding direction of the horizontal sleeve 211 is perpendicular to the sliding direction of the vertical positioning rod 22 in the vertical guide sleeve 212, so that the position of the first guide tube 4 can be adjusted horizontally and vertically to increase its adjustable range.

[0049] Locking screws are provided on both the horizontal sliding sleeve 211 and the vertical guide sleeve 212, so that the horizontal positioning sleeve 21 and the vertical positioning rod 22 can be locked independently, so that after the first guide tube 4 moves to the target position, it can be locked in this position to ensure that the first guide tube 4 is guided accurately.

[0050] Similarly, if Figure 1 and Figure 3 As shown, the vertical positioning sleeve 31 includes a vertical sliding sleeve 311, and a horizontal guide sleeve 312 is provided on the outer wall of the vertical sliding sleeve 311, and the horizontal positioning rod 32 is slidably provided in the horizontal guide sleeve 312;

[0051] The vertical sliding sleeve 311 and the horizontal guide sleeve 312 are respectively provided with locking screws for locking the vertical sliding sleeve 311 and the horizontal positioning rod 32;

[0052] The axis of the horizontal guide sleeve 312 is perpendicular to the axis of the vertical sliding sleeve 311 .

[0053] Specifically, the axis of the vertical sleeve 311 and the axis of the horizontal guide sleeve 312 are perpendicular to each other, so that the sliding direction of the vertical sleeve 311 is perpendicular to the sliding direction of the horizontal positioning rod 32 in the horizontal guide sleeve 312, so that the position of the second guide tube 5 can be adjusted horizontally and vertically to increase its adjustable range.

[0054] Locking screws are provided on both the vertical sliding sleeve 311 and the horizontal guide sleeve 312, so that the vertical positioning sleeve 31 and the horizontal positioning rod 32 can be locked independently, so that after the second guide tube 5 moves to the target position, it can be locked in this position to ensure that the second guide tube 5 is guided accurately.

[0055] In order to further expand the guideable range of the first guide tube 4 and the second guide tube 5 , the following preferred embodiments are provided.

[0056] As 2 and Figure 3 As shown in the figure, the horizontal sliding sleeve 211 and the vertical sliding sleeve 311 can both rotate freely on the frame 1 or be locked by locking screws.

[0057] Specifically, the horizontal sliding sleeve 211 can rotate, which can cause the vertical positioning rod 22 on the vertical guide sleeve 212 to rotate to change the inclination angle of the vertical positioning rod 22, thereby further increasing the guideable angle of the first guide tube 4.

[0058] This is because when the vertical positioning rod 22 cannot change the inclination angle, when the first guide tube 4 rotates too much, the bone screw will be interfered with by the frame 1 and difficult to insert into the first guide tube 4. The rotatable vertical positioning rod 22 can move the first guide tube 4 out of the internal area of ​​the frame 1, so that the insertion of the bone screw is not affected, thereby achieving the effect of expanding the guideable range of the first guide tube 4.

[0059] Similarly, the vertical sleeve 311 can also expand the guide range of the second guide tube 5, and the rotation of the vertical sleeve 311 can cause the horizontal positioning rod 32 to rotate horizontally, thereby changing the horizontal guide angle of the second guide tube 5, further expanding the guide range of the second guide tube 5.

[0060] Since the first guide tube 4 is vertically rotatably connected to the vertical positioning rod 22, the first guide tube 4 cannot be located on the axis of the vertical positioning rod 22. Therefore, in order to improve the horizontal adjustment range of the first guide tube 4 in the frame 1, the following preferred embodiment is provided.

[0061] like Figure 1 As shown, the directions of the rotational connections between the two first guide tubes 4 and the two vertical positioning rods 22 are opposite.

[0062] Specifically, the object setting of the first guide tubes 4 can move the two first guide tubes 4 away from the edge of the frame 1 respectively, thereby increasing the relative stroke of the two first guide tubes 4 and expanding the adjustable guiding range of the first guide tubes 4.

[0063] Furthermore, in order to prevent the vertical positioning rod 22 from being away from one side of the first guide tube 4 and releasing the frame 1, thereby shortening the relative stroke of the two first guide tubes 4, the following preferred embodiments are provided.

[0064] like Figure 2 As shown, a T-shaped steering sleeve 23 is rotatably mounted on one end of the vertical positioning rod 22 facing the interior of the frame 1, and the first guide tube 4 is rotatably mounted on the steering sleeve 23 in a direction perpendicular to the vertical positioning rod 22;

[0065] The steering sleeve 23 is provided with locking screws for locking the steering sleeve 23 on the vertical positioning rod 22 and for locking the first guide tube 4 .

[0066] Specifically, the steering sleeve 23 can rotate on the vertical positioning rod 22, so that the direction of the first guide tube 4 can be adjusted, so that when the vertical positioning rod 22 is moved horizontally, it can be positioned within a larger moving range.

[0067] And because the first guide tube 4 is installed on the steering sleeve 23 and is perpendicular to the vertical positioning rod 22, the first guide tube 4 can rotate around the axis of the vertical positioning rod 22 through the steering sleeve 23, thereby realizing the horizontal guide angle adjustment of the first guide tube 4 and further improving the guide range.

[0068] The above embodiments are merely exemplary embodiments of the present application and are not intended to limit the scope of the present application. The scope of protection of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and scope of protection of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the scope of protection of the present application.

Claims

1. A screw guide for fixation of femoral neck fracture, characterized in that: include: A frame (1), wherein a fixing rod (11) for fixing or holding is provided at a corner of the frame (1); A horizontal positioning mechanism (2) is slidably provided on the upper and lower ends of the frame (1), the horizontal positioning mechanism (2) comprising a horizontal positioning sleeve (21), and a vertical positioning rod (22) perpendicular to the sliding direction thereof is slidably provided on the horizontal positioning sleeve (21), and a first guide tube (4) is rotatably provided at the end of the vertical positioning rod (22), and the rotation axis of the first guide tube (4) is perpendicular to the vertical positioning rod (22); A vertical positioning mechanism (3) is slidably provided on both the left and right ends of the frame (1), the vertical positioning mechanism (3) comprising a vertical positioning sleeve (31), and a horizontal positioning rod (32) perpendicular to the sliding direction thereof is slidably provided on the vertical positioning sleeve (31), and a second guide tube (5) is rotatably provided at the end of the horizontal positioning rod (32), and the rotation axis of the second guide tube (5) is colinear with the axis of the horizontal positioning rod (32); The horizontal positioning sleeve (21) and the vertical positioning sleeve (31) are both capable of freely moving or locking on the frame (1), the vertical positioning rod (22) and the horizontal positioning rod (32) are respectively capable of freely sliding or locking on the horizontal positioning sleeve (21) and the vertical positioning sleeve (31), and the first guide tube (4) and the second guide tube (5) are respectively capable of freely rotating or locking on the vertical positioning rod (22) and the horizontal positioning rod (32); The rotation axis of the first guide tube (4) is parallel to the rotation axis of the second guide tube (5), and the two first guide tubes (4) and the two second guide tubes (5) can rotate independently to adjust their guiding angles in the vertical direction.

2. A screw guide for fixation of femoral neck fracture according to claim 1, characterized in that: The horizontal positioning sleeve (21) comprises a horizontal sliding sleeve (211), a vertical guide sleeve (212) is arranged on the outer wall of the horizontal sliding sleeve (211), and the vertical positioning rod (22) is slidably arranged in the vertical guide sleeve (212); The horizontal sliding sleeve (211) and the vertical guide sleeve (212) are respectively provided with locking screws for locking the horizontal sliding sleeve (211) and the vertical positioning rod (22); Wherein, the axis of the vertical guide sleeve (212) is perpendicular to the axis of the horizontal sliding sleeve (211).

3. A screw guide for fixation of femoral neck fracture according to claim 2, characterized in that: The vertical positioning sleeve (31) comprises a vertical sliding sleeve (311), and a horizontal guide sleeve (312) is arranged on the outer wall of the vertical sliding sleeve (311), and the horizontal positioning rod (32) is slidably arranged in the horizontal guide sleeve (312); The vertical sliding sleeve (311) and the horizontal guide sleeve (312) are respectively provided with locking screws for locking the vertical sliding sleeve (311) and the horizontal positioning rod (32); Wherein, the axis of the horizontal guide sleeve (312) is perpendicular to the axis of the vertical sliding sleeve (311).

4. A screw guide for fixation of femoral neck fracture according to claim 3, characterized in that: The horizontal sliding sleeve (211) and the vertical sliding sleeve (311) can both rotate freely on the frame (1) or be locked by locking screws.

5. A screw guide for fixation of femoral neck fracture according to any one of claims 2 to 4, characterized in that: The rotational connection points between the two first guide tubes (4) and the two vertical positioning rods (22) are oriented in opposite directions.

6. A screw guide for fixation of femoral neck fracture according to claim 5, characterized in that: A T-shaped steering sleeve (23) is rotatably mounted on one end of the vertical positioning rod (22) facing the interior of the frame (1), and the first guide tube (4) is rotatably mounted on the steering sleeve (23) in a direction perpendicular to the vertical positioning rod (22); Wherein, locking screws for locking the steering sleeve (23) on the vertical positioning rod (22) and for locking the first guide tube (4) are respectively arranged on the steering sleeve (23).

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