Orthopedic surgery tracer fixing device

Abstract

The invention relates to the technical field of orthopedic surgery, in particular to an orthopedic surgery tracer fixing device which comprises a base, a damping cover is fixedly connected to the surface of the base, two kirschner wire bodies are movably inserted into the base and the damping cover, a mounting groove is formed in the base, and the kirschner wire bodies are arranged in the mounting groove. A kirschner wire locking block is arranged in the center of the interior of the mounting groove, a bolt mounting block is movably connected to one side of the kirschner wire locking block, and a kirschner wire locking bolt is movably connected to one side of the bolt mounting block. The kirschner wire tracer is provided with a base, a kirschner wire body, a mounting groove, a kirschner wire locking block, a bolt mounting block, a kirschner wire locking bolt, a holder, a tracer body, an insertion hole, a movable groove, an adjusting rolling ball, an adjusting rod, a tightening seat, a tightening bolt, a second insertion groove, a positioning pin, a pressure spring, a snap spring and a thrust bearing. The device can be used for installing and fixing the tracer which is simple in structure, low in production and manufacturing cost, high in stability and not prone to damage.

Description

Technical Field

[0001] This invention relates to the field of orthopedic surgery technology, specifically to an orthopedic surgical tracer fixation device. Background Technology

[0002] Orthopedics is one of the most common departments in major hospitals. It mainly studies the anatomy, physiology, and pathology of the musculoskeletal system, and uses drugs, surgery, and physical methods to maintain and develop the normal morphology and function of this system. With the changes of the times and society, the spectrum of orthopedic injuries and diseases has changed significantly. For example, diseases such as bone and joint tuberculosis, osteomyelitis, and polio have decreased significantly, while injuries caused by traffic accidents have increased significantly. This change in the spectrum of orthopedic injuries and diseases requires orthopedics to keep pace with the times. Orthopedic instruments generally refer to professional medical instruments specifically used for orthopedic surgery. Optical tracers are one of the core components of optical navigation systems. They are usually fixed to the object being tracked to indicate the space of the object. They play a crucial role in computational navigation-assisted surgery. Traditional optical tracers achieve spatial positioning by working with reflective spheres and optical capture devices. They need to be adjusted and fixed in place to ensure stability and adaptability for subsequent use.

[0003] For example, patent document CN 211067008 U discloses a fixation device for an orthopedic surgical tracker, including a base; two self-tapping bone screws that can be parallelly inserted into the base and detachably connected to the base via locking screws; a mounting base for connecting an optical tracker; and a universal joint assembly, including a clamp, a connecting pair, and a first ball-head screw. The clamp is connected to the base, the connecting pair is connected to the clamp to adjust the gap between the clamps, the ball end of the first ball-head screw is located within the gap of the clamp, and the threaded end of the first ball-head screw is securely connected to the mounting base. This utility model uses two self-tapping bone screws, which not only saves the preparation step of drilling holes in the bone of the surgical subject, but also improves the stability and firmness of the optical tracker installation. The universal joint assembly provides the optical tracker with lockable degrees of freedom, allowing the optical tracker to be adjusted at multiple angles. Furthermore, since the locking operation is achieved through the locking screw and the connecting pair, the entire locking process is simple and convenient.

[0004] However, when this structure is used for actual orthopedic surgical tracer fixation, due to its own structural limitations, it usually suffers from problems such as complex structure, inconvenient installation and production, high cost, poor stability, and easy damage. It cannot provide stable positioning and protection at the connection points of various components, and cannot guarantee the stability of the equipment during use. Therefore, there is a need for a tracer installation and fixation device with a simpler structure, lower manufacturing cost, stronger stability, and less susceptibility to damage. Thus, it is urgent to design an orthopedic surgical tracer fixation device to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a fixation device for an orthopedic surgical tracer, in order to solve the problems mentioned in the background art, namely: 1. The existing equipment has a complex structure, making it difficult to operate in actual use; 2. The mechanical structure is too precise, which makes it prone to wear and tear; 3. The production cost is too high, and the installation and use risks are relatively large; 4. It is impossible to perform stable positioning and protection operations at the connection points of various components, and it is impossible to guarantee the stability of the equipment during use.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an orthopedic surgical tracer fixation device, comprising a base, a damping cover fixedly connected to the surface of the base, two sets of Kirschner wire bodies movably inserted into the base and the damping cover, an installation groove being provided inside the base, a Kirschner wire locking block being provided at the center of the installation groove, a bolt mounting block being movably connected to one side of the Kirschner wire locking block, and a Kirschner wire locking bolt being movably connected to one side of the bolt mounting block;

[0007] The gimbal has a fixed connection to one end of the base, a damping ring seat movably connected to one end of the gimbal, a tracer body at one end of the damping ring seat, a plug hole at the center of the back of the tracer body, a movable groove on one side and inside of the gimbal, an adjusting ball movably connected inside the movable groove, and an adjusting rod fixedly connected to one end of the adjusting ball.

[0008] Preferably, a tightening seat is provided on the other side of the gimbal, and a tightening bolt is provided inside the tightening seat.

[0009] Preferably, a damping ring sleeve is movably connected to the inner center of the damping ring seat, and a sealing gasket is provided on the inner wall of the damping ring sleeve.

[0010] Preferably, elastic rubber strips are provided at the four corners of the side of the damping ring sleeve, and cushioning soft cotton is provided on the four sides of the side of the damping ring sleeve.

[0011] Preferably, a conical rubber cover is fixedly connected to the surface of the damping ring seat, and a sealing ring is provided on the surface of the conical rubber cover.

[0012] Preferably, the damping cover has a damping top groove inside, and a contraction air bladder is provided on one side of the inner wall of the damping top groove. One end of the contraction air bladder is fixedly connected to a damping compression seat.

[0013] Preferably, the surface of the damping cover is provided with a first insertion groove, and the surface of the base is provided with a second insertion groove.

[0014] Preferably, a positioning pin is provided between the base and the Kirschner wire locking block, and a compression spring is sleeved on the outer surface of the positioning pin.

[0015] Preferably, a retaining ring is provided between the Kirschner wire locking block and the bolt mounting block, and a thrust bearing is sleeved on the outer surface of the retaining ring.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] This orthopedic surgical tracer fixation device, through its base, Kirschner wire body, mounting groove, Kirschner wire locking block, bolt mounting block, Kirschner wire locking bolt, pan-tilt unit, tracer body, insertion hole, movable groove, adjusting ball, adjusting rod, tightening seat, tightening bolt, second insertion groove, positioning pin, compression spring, retaining spring, and thrust bearing, allows for the installation and fixation of the tracer with a relatively simple structure, low manufacturing cost, strong stability, and resistance to damage. In actual use, the operator first passes two 1.5mm Kirschner wire bodies through the second insertion groove on the base, slides the base along the Kirschner wire bodies to the patient's skin surface, and rotates the Kirschner wire locking bolt clockwise. This pushes the retaining spring and thrust bearing inward along the thread of the bolt mounting block, causing the Kirschner wire locking block to press against the compression spring on the positioning pin and slide inward into the base. The rough surface of the Kirschner wire locking block... The base is fixed by contacting and pressing the Kirschner wire body with the surface of the Kirschner wire. The patient tracker body is installed in the pan-tilt unit and the adjusting rod of the adjusting ball is adjusted. The tightening bolt on the tightening seat on the side of the pan-tilt unit is loosened. The angle of the patient tracker body is adjusted by adjusting the pan-tilt unit angle. The tightening bolt on the tightening seat on the side of the pan-tilt unit is then tightened to fix the angle of the patient tracker body. The Kirschner wire locking bolt is rotated counterclockwise. Through the elastic deformation of the compression spring on the positioning pin, the Kirschner wire locking block is pushed out of the base along the tightening seat, releasing the fixation of the Kirschner wire body. The base is then disassembled away from the patient's skin surface along the Kirschner wire body. This invention is used for the installation and fixation of optical trackers for optical navigation and positioning systems in orthopedic surgery. It has the advantages of low manufacturing cost, wide applicability, simple operation, and good stability, reflecting the practicality of the equipment design.

[0018] This orthopedic surgical tracer fixation device, through its base, damping cover, Kirschner wire body, gimbal, damping ring seat, damping ring sleeve, sealing gasket, elastic rubber strip, cushioning soft foam, conical rubber cover, sealing ring, damping top groove, contraction airbag, damping compression seat, and first insertion groove, further improves the overall performance of the device. In daily use, when the second insertion groove on the base is inserted into the Kirschner wire body, it can be inserted from the first insertion groove on the surface of the damping cover, and then pressed against the surface of the damping compression seat inside the damping top groove. The damping compression seat can then adaptively contract the contraction airbag on the back to compress and secure the Kirschner wire body, quickly completing the initial positioning and damping operation of the Kirschner wire body within the damping cover, thus making its subsequent fixation within the base more precise and stable. Simultaneously, when… When the gimbal adjusts the angle of one end of the tracer body via the adjusting rod on the internal adjusting ball, the adjusting rod can be tightly fitted inside the damping ring seat through the sealing gasket on the inner wall of the damping ring sleeve. Then, during angle adjustment, the elastic rubber strips and cushioning soft pads on the four sides and four corners of the damping ring sleeve cooperate to perform stable damping and limiting operations. Furthermore, the damping ring seat and the gimbal can be sealed and protected by a conical rubber cover and a sealing ring, ensuring more stable damping angle adjustment of the tracer body. It has a wide range of applications, simple structure, low installation and processing costs, stable function, is not easily damaged, and has high installation efficiency. The gimbal can be modified to other mechanical structures according to different needs, and the slots on the base can be adjusted according to the required Kirschner wire size, reflecting the comprehensiveness of the equipment design. Attached Figure Description

[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the base structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the overall structure of the Kirschner wire body of the present invention;

[0022] Figure 4 This is an overall schematic diagram of the gimbal structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the overall structure of the tracer body of the present invention;

[0024] Figure 6 This is an overall schematic diagram of the damping shield structure of the present invention;

[0025] Figure 7 This is a split view schematic diagram of the damping ring seat structure of the present invention.

[0026] In the diagram: 1. Base; 2. Damping cover; 3. Kirschner wire body; 4. Mounting slot; 5. Kirschner wire locking block; 6. Bolt mounting block; 7. Kirschner wire locking bolt; 8. Gimbal; 9. Damping ring seat; 10. Tracer body; 11. Insertion hole; 12. Movable slot; 13. Adjusting ball; 14. Adjusting rod; 15. Tightening seat; 16. Tightening bolt; 17. Damping ring sleeve; 18. Sealing gasket; 19. Elastic rubber strip; 20. Buffer foam; 21. Conical rubber cover; 22. Sealing ring; 23. Damping top groove; 24. Contraction airbag; 25. Damping compression seat; 26. First insertion slot; 27. Second insertion slot; 28. Positioning pin; 29. ​​Compression spring; 30. Snap ring; 31. Thrust bearing. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1-7 One embodiment provided by the present invention:

[0029] A surgical tracker fixation device for orthopedic surgery includes a base 1, a damping cover 2 fixedly connected to the surface of the base 1, two sets of Kirschner wire bodies 3 movably inserted into the interior of the base 1 and the damping cover 2, an installation groove 4 inside the base 1, a Kirschner wire locking block 5 disposed at the center of the installation groove 4, a bolt mounting block 6 movably connected to one side of the Kirschner wire locking block 5, a Kirschner wire locking bolt 7 movably connected to one side of the bolt mounting block 6, a damping top groove 23 inside the damping cover 2, a contraction air bladder 24 disposed on one side of the inner wall of the damping top groove 23, a damping compression seat 25 fixedly connected to one end of the contraction air bladder 24, a first insertion groove 26 on the surface of the damping cover 2, a second insertion groove 27 on the surface of the base 1, and a connection between the base 1 and the Kirschner wire locking block 5. A locating pin 28 is provided, and a compression spring 29 is sleeved on the outer surface of the locating pin 28. A retaining spring 30 is provided between the Kirschner wire locking block 5 and the bolt mounting block 6, and a thrust bearing 31 is sleeved on the outer surface of the retaining spring 30. The base 1 is used to install and fix the Kirschner wire body 3, the Kirschner wire locking block 5 and the bolt mounting block 6. The Kirschner wire locking block 5 is used to push the Kirschner wire locking block 5 to press the Kirschner wire body 3 by screwing the Kirschner wire locking bolt 7 in clockwise, and to move the Kirschner wire locking block 7 out of the base 1 to loosen the Kirschner wire body 3 by screwing the Kirschner wire locking bolt 7 out counterclockwise. The Kirschner wire locking bolt 7 is used to tighten inward along the thread on the bolt mounting block 6, push the Kirschner wire locking block 5 to press the Kirschner wire body 3, and at the same time prevent the compression spring 29 from popping the Kirschner wire locking block 5 out to loosen the Kirschner wire body 3.

[0030] A gimbal 8 is fixedly connected to one end of a base 1. A damping ring seat 9 is movably connected to one end of the gimbal 8. A tracer body 10 is located at one end of the damping ring seat 9. A insertion hole 11 is provided at the center of the back of the tracer body 10. A movable groove 12 is provided on one side and inside the gimbal 8. An adjusting ball 13 is movably connected inside the movable groove 12. An adjusting rod 14 is fixedly connected to one end of the adjusting ball 13. A tightening seat 15 is provided on the other side of the gimbal 8. A tightening bolt 16 is provided inside the tightening seat 15. A damping ring sleeve 17 is movably connected to the center of the inside of the damping ring seat 9. A sealing gasket 18 is provided on the inner wall of the damping ring sleeve 17. Elastic rubber strips 19 are provided at the four corners of the side of the damping ring sleeve 17. Soft cushioning cotton 20 is provided on the four sides of the side of the damping ring sleeve 17. A conical rubber cover 21 is fixedly connected to the surface of the damping ring seat 9. A sealing ring 22 is provided on the surface of the rubber cover 21. The bolt mounting block 6 is used to install the Kirschner wire locking bolt 7 and the connecting base 1 to prevent the Kirschner wire locking block 5 from coming out of the base 1. The positioning pin 28 serves as a channel to fix the movement trajectory of the Kirschner wire locking block 5. The compression spring 29 releases the thrust through elastic deformation. When the Kirschner wire locking bolt 7 rotates counterclockwise, it pushes the Kirschner wire locking block 5 outward and loosens the Kirschner wire body 3. The thrust bearing 31 is used to push the Kirschner wire locking bolt 7 inward when the Kirschner wire locking bolt 7 rotates clockwise. The retaining spring 30 is used to install the thrust bearing 31 on the shaft of the Kirschner wire locking bolt 7 to prevent the thrust bearing 31 from falling off. The pan-tilt head 8 is used to install the tracer body 10 and adjust the angle and direction of the tracer body 10. The angle and direction of the tracer body 10 are fixed by tightening the bolt 16 on the pan-tilt head 8.

[0031] Working principle: Before use, install the positioning pin 28 in the corresponding mounting hole in the base 1, then insert the compression spring 29 through the positioning pin 28 into the mounting hole of the base 1, align the Kirschner wire locking bolt 7 with the threaded hole on the bolt mounting block 6 and insert the Kirschner wire locking bolt 7 into the bolt mounting block 6 clockwise, then insert the thrust bearing 31 along the shaft of the Kirschner wire locking bolt 7, install the snap ring 30 in the groove of the shaft of the Kirschner wire locking bolt 7, take out the Kirschner wire locking block 5, turn its knurled side inward, align the mounting hole with the positioning pin 28 on the base 1, and insert the base 1 inward, finally fix the assembled bolt mounting block 6 into the base 1 with screws, take out the gimbal 8, install the shorter screw part of the gimbal 8 into the corresponding threaded hole on the side of the base 1 to complete the installation of the gimbal;

[0032] In use, first fix the two 1.5mm Kirschner wire bodies 3 on the patient according to the operator's requirements. Part of the Kirschner wire body 3 needs to be exposed on the patient's skin surface. Align the second insertion slot 27 on the base 1 with the two Kirschner wire bodies 3. Insert the base 1 along the Kirschner wire body 3, and keep the bottom as close to the patient's skin surface as possible. Rotate the Kirschner wire locking bolt 7 clockwise to push the Kirschner wire locking block 5 towards the slot in the base 1 to press the Kirschner wire body 3. Take out the tracer body 10 and install it on the adjustment rod 14 on the upper part of the pan-tilt head 8. Loosen the tightening bolt 16 on the tightening seat 15 and adjust the angle of the tracer body 10 as needed. Tighten the tightening bolt 16 on the tightening seat 15 to fix the angle of the patient's tracer body 10 and complete the installation of the tracer body 10 fixing device.

[0033] During use, when the second insertion slot 27 on the base 1 is inserted into the Kirschner wire body 3, it can be inserted from the first insertion slot 26 on the surface of the damping cover 2, and then pressed against the surface of the damping compression seat 25 inside the damping top groove 23. The damping compression seat 25 can then adaptively retract the back-mounted airbag 24 to adaptively retract and secure the Kirschner wire body 3, quickly completing the initial positioning and damping operation of the Kirschner wire body 3 inside the damping cover 2. This makes its subsequent fixation inside the base 1 more precise and stable. Simultaneously, when the gimbal 8 adjusts via the adjusting rod 14 on the internal adjusting ball 13... When the angle of the tracer body 10 is adjusted, the adjusting rod 14 can be tightly fitted inside the damping ring seat 9 through the sealing gasket 18 on the inner wall of the damping ring sleeve 17. After the adjusting rod 14 is adjusted, the elastic rubber strips 19 on the four sides and four corners of the damping ring sleeve 17 and the buffer soft cotton 20 cooperate to perform stable damping limit operation. Furthermore, the damping ring seat 9 and the pan-tilt head 8 can be sealed and protected by the conical rubber cover 21 and the sealing ring 22 to ensure a more stable damping angle adjustment operation at the tracer body 10. The above is the entire working principle of the present invention.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An orthopedic surgical tracer fixing device, comprising a base (1), characterized in that: The surface of the base (1) is fixedly connected with a damping cover (2), two groups of Kirschner wire bodies (3) are movably inserted inside the base (1) and the damping cover (2), a mounting groove (4) is provided inside the base (1), a Kirschner wire locking block (5) is arranged at the inner center of the mounting groove (4), one side of the Kirschner wire locking block (5) is movably connected with a bolt mounting block (6), and one side of the bolt mounting block (6) is movably connected with a Kirschner wire locking bolt (7); A pan-tilt head (8), one end of the base (1) is fixedly connected to the pan-tilt head (8), one end of the pan-tilt head (8) is movably connected to a damping ring seat (9), one end of the damping ring seat (9) is provided with a tracer body (10), a plug hole (11) is provided at the back center of the tracer body (10), a movable groove (12) is provided on one side and inside of the pan-tilt head (8), an adjusting ball (13) is movably connected inside the movable groove (12), and one end of the adjusting ball (13) is fixedly connected to an adjusting rod (14).

2. The orthopedic surgical tracer fixing device according to claim 1, characterized in that: A tightening seat (15) is arranged on the other side of the pan / tilt platform (8), and a tightening bolt (16) is arranged inside the tightening seat (15).

3. The orthopedic surgical tracer fixing device according to claim 1, characterized in that: The inner center of the damping ring seat (9) is movably connected with a damping ring sleeve (17), and the inner wall of the damping ring sleeve (17) is provided with a sealing gasket (18).

4. The orthopedic surgical tracer fixing device according to claim 3, characterized in that: Elastic rubber strips (19) are arranged at the four corners of the side of the damping ring sleeve (17), and buffer sponges (20) are arranged at the four sides of the side of the damping ring sleeve (17).

5. The orthopedic surgical tracer fixing device according to claim 1, characterized in that: A conical rubber cover (21) is fixedly connected to the surface of the damping ring seat (9), and a sealing ring (22) is provided on the surface of the conical rubber cover (21).

6. The orthopedic surgical tracer fixing device according to claim 1, characterized in that: A damping top groove (23) is provided inside the damping cover (2), a shrinkage airbag (24) is provided on one side of the inner wall of the damping top groove (23), and one end of the shrinkage airbag (24) is fixedly connected to a damping extrusion seat (25).

7. The orthopedic surgical tracer fixation device according to claim 1, characterized in that: The surface of the damping cover (2) is provided with a first plug-in slot (26), and the surface of the base (1) is provided with a second plug-in slot (27).

8. The orthopedic surgical tracer fixing device according to claim 1, characterized in that: A positioning pin (28) is provided between the base (1) and the Kirschner wire locking block (5), and a compression spring (29) is sleeved on the outer surface of the positioning pin (28).

9. The orthopedic surgical tracer fixing device according to claim 1, characterized in that: A retaining spring (30) is arranged between the Kirschner wire locking block (5) and the bolt mounting block (6), and a thrust bearing (31) is sleeved on the outer surface of the retaining spring (30).

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