A femoral head guide

Abstract

The utility model provides a kind of femoral head guider, including first arc frame, first arc frame end part is provided with extension frame, detachable sleeve is provided on extension frame, concentrically arranged with second arc frame on first arc frame, second arc frame one end is slidably and fixedly set on first arc frame, the other end is provided with positioning rod, the end part of first arc frame is rotatably and fixedly provided with support frame, support frame is concentrically arranged with first arc frame, support frame end part is provided with support rod, the end part of support rod is provided with support block, support block end part is provided with flexible block.The guider can be stably supported in narrow space, without manual assistance, only mechanical locking can complete the fixation of guider, improve the accuracy and stability when femoral head puncture.

Description

Technical Field

[0001] This utility model specifically relates to a femoral head guide. Background Technology

[0002] In the treatment of femoral head-related diseases, femoral head guides play a crucial role. They assist surgeons in stabilizing the puncture site, laying the foundation for subsequent surgical procedures. However, existing femoral head guides have significant shortcomings in practical applications.

[0003] For example, Chinese utility model patent with publication number CN214104662U provides a hip arthroscopic femoral head ischemic necrosis core decompression and positioning device. The tip can be positioned in the necrotic area of ​​the femoral head, and then the guide arm can be moved to a suitable position for positioning of the femoral head. One end of the guide arm is against the surface of the lateral cortical bone of the femur, and its end has a serrated structure to ensure that it can be firmly fixed on the femoral cortex and will not move.

[0004] For example, Chinese utility model patent with publication number CN203898392U provides a method for drilling, decompression guide and treatment device under hip arthroscopy for femoral head necrosis, which allows direct observation of the lesions on the outer surface of the femoral head necrosis site through the hip arthroscopy sleeve.

[0005] However, analysis of the aforementioned patents and existing technologies reveals that the surgical operating space is extremely narrow due to the unique structure of the human hip joint. This poses a significant challenge to the stable support sleeve of the femoral head guide. Traditional guides have poorly designed support structures that cannot adapt to the complex anatomical structure of the confined space, leading to easy movement or displacement of the sleeve after placement, affecting the accuracy and stability of subsequent punctures. Therefore, a new femoral head guide technology is urgently needed to solve these problems. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model proposes a femoral head guide to solve the technical problem mentioned in the background art: existing femoral head guides cannot provide stable fixation and support for the sleeve in narrow spaces, requiring long-term manual fixation of the sleeve during puncture, which affects the accuracy and stability of subsequent punctures.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a femoral head guide, comprising: The first arc-shaped frame has an extension frame at its end, and the extension frame is provided with a detachable sleeve; The second arc-shaped frame is arranged concentrically with the first arc-shaped frame, and one end of the second arc-shaped frame is slidably and fixedly mounted on the first arc-shaped frame, while the other end is provided with a positioning rod. A support frame, rotatable and fixable at one end, is concentrically arranged with the first arc-shaped frame, and a support rod is provided at the end of the support frame; and A support block is provided at the end of the support rod, and an abutment block is provided at the end of the support block.

[0008] In a preferred embodiment, the sleeve is slidably disposed at the end of the first arc-shaped frame along its axis, and the end of the first arc-shaped frame is screwed with a first set screw, which abuts against the sleeve.

[0009] In a preferred embodiment, a connecting frame is rotatably provided at the end of the second arc-shaped frame. The connecting frame is slidably sleeved on the first arc-shaped frame, and a second set screw is screwed onto the connecting frame. The second set screw passes through the second arc-shaped frame, and its other end abuts against the first arc-shaped frame.

[0010] In a preferred embodiment, the positioning rod is slidably disposed at the end of the second arc-shaped frame along its axis, and a third set screw is screwed onto the end of the second arc-shaped frame away from the second set screw, the third set screw abutting against the positioning rod.

[0011] In a preferred embodiment, the end of the positioning rod is provided with an abutment ball.

[0012] In a preferred embodiment, a fastening knob is provided at the hinge point between the support frame and the first arc-shaped frame. The fastening knob is screwed to the end of the first arc-shaped frame and abuts against the support frame.

[0013] In a preferred embodiment, the support rod is slidably disposed at the end of the support frame along its axis, and the end of the support frame is screwed with a fourth set screw, which abuts against the support rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: When using this guide, the position of the second arc-shaped frame on the first arc-shaped frame can be adjusted according to the puncture location of the Kirschner wire, so that the ends of the sleeve and the positioning rod abut against both sides of the hip joint. Then, the support frame is rotated and its position is fixed, so that the support block at the end of the support rod abuts against the femoral head. This allows the position of the guide to be quickly fixed, and the position of the guide is further supported by the support rod, so that the guide can be stably supported in a narrow space. The guide can be fixed by mechanical locking only, which improves the accuracy and stability of femoral head puncture. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 A schematic diagram of the structure of a femoral head guide in use according to this utility model; Figure 2 This is a schematic diagram of the structure of the first arc-shaped frame in a femoral head guide according to this utility model; Figure 3 This is a schematic diagram of the structure of the second arc-shaped frame in a femoral head guide according to the present invention; Figure 4 This is a schematic diagram of the support frame in a femoral head guide according to the present invention; Figure label: 1. First arc-shaped frame; 2. Extension frame; 3. Sleeve; 4. First set screw; 5. Second arc-shaped frame; 6. Connecting frame; 7. Second set screw; 8. Positioning rod; 9. Third set screw; 10. Abutting ball; 11. Support frame; 12. Fastening knob; 13. Support rod; 14. Fourth set screw; 15. Support block; 16. Abutting block. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present invention and should not be construed as limiting the scope of protection of the present invention. Those skilled in the art can make some non-essential improvements and adjustments to the present invention based on the above application content.

[0018] Example: like Figures 1 to 3 As shown, this utility model provides a femoral head guide, including a first arc-shaped frame 1, an extension frame 2 at one end of the first arc-shaped frame 1, a detachable sleeve 3 on the extension frame 2, the sleeve 3 being slidably disposed at the end of the first arc-shaped frame 1 along its axis, a first set screw 4 being screwed to the end of the first arc-shaped frame 1, the first set screw 4 abutting against the sleeve 3. A second arc-shaped frame 5 is concentrically arranged on the first arc-shaped frame 1, one end of the second arc-shaped frame 5 being slidably and fixedly disposed on the first arc-shaped frame 1, and a positioning rod 8 being disposed at the other end, a connecting frame 6 being rotatably disposed at the end of the second arc-shaped frame 5, the connecting frame 6 being slidably sleeved on the first arc-shaped frame 1, and a second set screw 7 being screwed to the connecting frame 6, one end of the second set screw 7 passing through the second arc-shaped frame 5, and the other end abutting against the first arc-shaped frame 1.

[0019] When using this guide wire device, the position of the second arc frame 5 on the first arc frame 1 can be adjusted according to the size of the femoral head and the size of the surgical space. The distance between the end of the sleeve 3 and the positioning rod 8 can also be adjusted. During adjustment, the sleeve 3 can be slid at the end of the first arc frame 1, and the first set screw 4 can be tightened to fix the position of the sleeve 3 to adapt to the size of the femoral head. The intersection of the extension lines of the sleeve 3 and the positioning rod 8 coincides with the center of the first arc frame 1 and the second arc frame 5, so that the position of the Kirschner wire can be stably guided during puncture. The connecting frame 6 can also be slid on the first arc frame 1, and the second arc frame 5 can be rotated on the connecting frame 6 according to the surgical position. After adjusting to the appropriate position, the second set screw 7 can be tightened, and the positions of the second arc frame 5 and the connecting frame 6 on the first arc frame 1 can be fixed simultaneously to adapt to the surgical space.

[0020] like Figures 1 to 3 As shown, in this embodiment, the positioning rod 8 is slidably disposed at the end of the second arc-shaped frame 5 along its axis. A third setter 9 is screwed onto the end of the second arc-shaped frame 5 away from the second setter 7. The third setter 9 abuts against the positioning rod 8. The positioning rod 8 can be fixed or unfixed by rotating the third setter 9 to facilitate the replacement of the positioning rod 8. Furthermore, an abutment ball 10 is provided at the end of the positioning rod 8 so that when the end of the positioning rod 8 comes into contact with the soft tissue on the femoral head, it will not cause damage to the soft tissue, thus ensuring the later rehabilitation effect.

[0021] like Figure 1 , 4 As shown, in this embodiment, a support frame 11 is rotatably and fixably provided at the end of the first arc-shaped frame 1. The support frame 11 is concentrically arranged with the first arc-shaped frame 1. A support rod 13 is provided at the end of the support frame 11, a support block 15 is provided at the end of the support rod 13, and an abutment block 16 is provided at the end of the support block 15. A fastening knob 12 is provided at the hinge point between the support frame 11 and the first arc-shaped frame 1. The fastening knob 12 is screwed to the end of the first arc-shaped frame 1 and abuts against the support frame 11. The support rod 13 is slidably provided at the end of the support frame 11 along its axis, and a fourth set screw 14 is screwed to the end of the support frame 11. The fourth set screw 14 abuts against the support rod 13.

[0022] After adjusting the positions of the first arc-shaped frame 1 and the second arc-shaped frame 5, the support frame 11 can be rotated to form an angle with the first arc-shaped frame 1, and the support rod 13 can be slid so that the abutment block 16 at its end abuts against the side of the femoral head. Then, tighten the fastening knob 12 and the fourth set screw 14 to fix the position of the abutment block 16 so that the guide makes three-point contact with the femoral head. By applying pressure to the guide, it can be firmly fixed on the femoral head to facilitate subsequent puncture work and effectively improve the accuracy and stability of puncture.

[0023] The specific usage and beneficial effects of this utility model are as follows: When using this guide, the position of the second arc frame 5 on the first arc frame 1 can be adjusted according to the puncture position of the Kirschner wire, so that the ends of the sleeve 3 and the positioning rod 8 abut against the two sides of the hip joint. Then, the support frame 11 is rotated and its position is fixed, so that the support block 15 at the end of the support rod 13 abuts against the femoral head. This allows the position of the guide to be quickly fixed, and the position of the guide is further supported by the support rod 13, so that the guide can be stably supported in a narrow space. Only simple mechanical locking is needed to fix the guide, which improves the accuracy and stability of femoral head puncture.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above. Modifications or improvements can be made to this utility model, which is obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this utility model fall within the scope of protection claimed by this utility model.

Claims

1. A femoral head guide, characterized in that, Including: The first arc-shaped frame (1) has an extension frame (2) at its end, and the extension frame (2) has a detachable sleeve (3). The second arc frame (5) is arranged concentrically with the first arc frame (1), and one end of it is slidably and fixedly mounted on the first arc frame (1), while the other end is provided with a positioning rod (8). A support frame (11), one end of which is rotatably and fixably disposed at the end of the first arc-shaped frame (1) and concentrically arranged with the first arc-shaped frame (1), is provided with a support rod (13) at the end of the support frame (11); and A support block (15) is provided at the end of the support rod (13), and an abutment block (16) is provided at the end of the support block (15).

2. The femoral head guide according to claim 1, characterized in that: The sleeve (3) is slidably disposed at the end of the first arc frame (1) along its axis. The end of the first arc frame (1) is screwed with a first set screw (4), which abuts against the sleeve (3).

3. The femoral head guide according to claim 1, characterized in that: The second arc frame (5) is rotatably provided with a connecting frame (6) at its end. The connecting frame (6) is slidably sleeved on the first arc frame (1), and a second set screw (7) is screwed onto the connecting frame (6). One end of the second set screw (7) passes through the second arc frame (5), and the other end abuts against the first arc frame (1).

4. The femoral head guide according to claim 3, characterized in that: The positioning rod (8) is slidably disposed at the end of the second arc frame (5) along its axis. A third set screw (9) is screwed onto the end of the second arc frame (5) away from the second set screw (7). The third set screw (9) abuts against the positioning rod (8).

5. The femoral head guide according to claim 1, characterized in that: The end of the positioning rod (8) is provided with an abutment ball (10).

6. The femoral head guide according to claim 1, characterized in that: A fastening knob (12) is provided at the hinge point between the support frame (11) and the first arc frame (1). The fastening knob (12) is screwed to the end of the first arc frame (1) and abuts against the support frame (11).

7. The femoral head guide according to claim 1, characterized in that: The support rod (13) is slidably disposed at the end of the support frame (11) along its axis, and a fourth set screw (14) is screwed to the end of the support frame (11), the fourth set screw (14) abutting against the support rod (13).

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