An orthopedic surgical tracer fixation device

Abstract

The application relates to the technical field of orthopedic surgery, in particular to an orthopedic surgery tracer fixing device, which comprises a base, the surface of the base is fixedly connected with a damping cover, two groups of Kirschner wire bodies are movably inserted into the inside of the base and the damping cover, an installation groove is arranged in the inside of the base, a Kirschner wire locking block is arranged in the inside center of the installation groove, a bolt installation 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 installation block. The base, the Kirschner wire body, the installation groove, the Kirschner wire locking block, the bolt installation block, the Kirschner wire locking bolt, the holder, the tracer body, the insertion hole, the movable groove, the adjusting ball, the adjusting rod, the tightening seat, the tightening bolt, the second insertion groove, the positioning pin, the compression spring, the clamping spring and the thrust bearing can be used to realize the tracer installation and fixing operation, and the device has the advantages of simple structure, low production cost, high stability and difficulty in damage.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of orthopedic surgery, in particular to an orthopedic surgery tracer fixing device. BACKGROUND

[0002] The orthopedics department is one of the most common departments in hospitals, mainly studies the anatomy, physiology and pathology of the skeletal muscle system, and uses drugs, surgery and physical methods to maintain and develop the normal shape and function of the system. With the change of the times and society, the orthopedic injury spectrum has changed significantly, for example, bone and joint tuberculosis, osteomyelitis and poliomyelitis have decreased significantly, and traffic accidents have increased significantly. The change of the orthopedic injury spectrum requires the orthopedics department to keep pace with the times. Orthopedic instruments generally refer to professional medical instruments specially used for orthopedic surgery. The optical tracer is one of the core components of the optical navigation system, which is usually fixed on the object to be tracked to indicate the space of the object, and plays a crucial role in the calculation of navigation-assisted surgery. The traditional optical tracer is matched with a reflective ball and an optical capture device to realize spatial positioning, and needs to be adjusted and fixed for installation to ensure the stability and adaptability of subsequent use.

[0003] For example, the patent file with the announcement number CN 211067008 U discloses an orthopedic surgery tracer fixing device, which comprises a base, two self-tapping bone screws, which can be parallelly arranged on the base and are detachably connected with the base through a locking screw, a mounting seat for connecting the optical tracer, and a universal joint assembly comprising 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 distance between the clamps, and the ball head end of the first ball head screw is arranged in the gap of the clamp. The threaded end of the first ball head screw is tightly connected with the mounting seat. The utility model adopts two self-tapping bone screws, which not only saves the preparation step of drilling holes on the bones of the surgical object, but also improves the stability and firmness of the optical tracer installation. The universal joint assembly provides a lockable degree of freedom to the optical tracer, so that the optical tracer can be adjusted at multiple angles. Since the locking operation is realized through the locking screw and the connecting pair, the whole locking process is simple and convenient.

[0004] However, the structure has the problems of complex structure, inconvenient installation and production, high cost, poor stability and easy damage when used in actual orthopedic surgery tracer fixing, cannot stably position and protect the connection parts of each component, and cannot guarantee the stability of the equipment during use. Therefore, a tracer fixing device with a simple structure, low production cost, high stability and not easy to damage is needed, and therefore a orthopedic surgery tracer fixing device needs to be designed to solve the above problems. SUMMARY

[0005] The purpose of the present application is to provide an orthopedic surgery tracer fixing device to solve the problems of the existing structure, such as the complexity of the existing device structure, the difficulty of operation in actual use, the precision of the mechanical structure, the high production cost, the high risk of installation and use, and the inability to stably position and protect the connection of each component.

[0006] To achieve the above purpose, the present application provides the following technical scheme: an orthopedic surgery tracer fixing device, comprising a base, a damping cover fixedly connected to the surface of the base, two groups of Kirschner wire bodies movably inserted into the inside of the base and the damping cover, an installation groove formed in the inside of the base, a Kirschner wire locking block provided in the inside center of the installation groove, a bolt mounting block movably connected to one side of the Kirschner wire locking block, and a Kirschner wire locking bolt movably connected to one side of the bolt mounting block.

[0007] A gimbal is fixedly connected to one end of the base, a damping ring seat is movably connected to one end of the gimbal, a tracer body is provided at one end of the damping ring seat, an insertion hole is formed in the back center of the tracer body, a movable groove is formed in one side and the inside of the gimbal, an adjusting roller is movably connected to the inside of the movable groove, and an adjusting rod is fixedly connected to one end of the adjusting roller.

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

[0009] Preferably, a damping ring sleeve is movably connected to the inside 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 on the four corners of the side surface of the damping ring sleeve, and buffer soft cotton is provided on the four sides of the side surface 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, a damping top groove is formed in the inside of the damping cover, a contraction air bag is provided on one side of the inner wall of the damping top groove, and a damping extrusion seat is fixedly connected to one end of the contraction air bag.

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

[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 snap spring is arranged between the Kirschner wire locking block and the bolt mounting block, and an outer surface of the snap spring is sleeved with a thrust bearing.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] The orthopedic surgery tracer fixing device, through the base, Kirschner needle body, mounting groove, Kirschner needle locking block, bolt mounting block, Kirschner needle locking bolt, gimbal, tracer body, plug-in hole, movable slot, adjusting ball, adjusting rod, tightening seat, tightening bolt, second plug-in slot, positioning pin, compression spring, snap spring and thrust bearing, can make the device have a relatively simple structure, low production cost, strong stability and not easy to damage the tracer installation and fixing operation. In actual use, the staff first passes two 1.5mm Kirschner needle bodies through the second plug-in slot on the base, and slides the base along the Kirschner needle body to the surface of the patient's skin, rotates the Kirschner needle locking bolt clockwise, pushes the snap spring and the thrust bearing inward along the threads of the bolt mounting block, drives the Kirschner needle locking block to slide the compression spring sleeved on the positioning pin into the base, the Kirschner needle locking block rough surface contacts the Kirschner needle body and compresses the Kirschner needle body to complete the base fixation, installs the patient's tracer body in the adjusting rod part of the adjusting ball in the gimbal, loosens the tightening bolt on the tightening seat on the side of the gimbal, adjusts the angle of the gimbal to adjust the angle of the patient's tracer body, locks the tightening bolt on the tightening seat on the side of the gimbal, fixes the angle of the patient's tracer body, rotates the Kirschner needle locking bolt counterclockwise, and the Kirschner needle locking block is pushed out of the base along the tightening seat by the elastic deformation of the compression spring sleeved on the positioning pin, the fixation of the Kirschner needle body is released, the base is moved away from the surface of the patient's skin along the Kirschner needle body to complete the disassembly. The present application is used for fixing the optical tracer of the optical navigation positioning system in the scene of the optical navigation positioning system in orthopedic surgery, has the advantages of low production cost, wide application range, simple operation, good stability and the like, and embodies the practicability of the device design.

[0018] The orthopedic surgery tracer fixing device, through the setting of the base, the damping cover, the Kirschner needle body, the holder, the damping ring seat, the damping ring sleeve, the sealing gasket, the elastic rubber strip, the buffer soft cotton, the conical rubber cover, the sealing ring, the damping top groove, the contraction air bag, the damping extrusion seat and the first plug-in groove, further improves the use effect of the whole device, and in the daily use process, when the second plug-in groove on the base is plugged into the Kirschner needle body, it can be inserted from the first plug-in groove on the surface of the damping cover, and then abut on the surface of the damping extrusion seat in the damping top groove, and then the damping extrusion seat can adaptively contract the contraction air bag on the back, and adaptively contract the Kirschner needle body, so that the Kirschner needle body is preliminarily positioned and damped in the damping cover, so that the subsequent fixing in the base is more accurate and stable, and when the holder adjusts the angle of the tracer body at one end through the adjusting rod on the internal adjusting ball, the adjusting rod can be tightly sleeved in the damping ring seat through the sealing gasket on the inner wall of the damping ring sleeve, and when the adjusting rod adjusts the angle, the elastic rubber strips and the buffer soft cotton on the four sides and four corners of the damping ring sleeve cooperate to stably limit the damping, and the damping ring seat and the holder can be sealed and protected through the conical rubber cover and the sealing ring, so that the tracer body is more stably damped and adjusted in angle, the application scenarios are wide, the structure is simple, the installation and processing costs are low, the function is stable, the device is not easy to damage, the installation efficiency is high, the holder can be changed to other mechanical structures according to different needs, the groove on the base can be adjusted according to the size of the Kirschner needle, and the comprehensiveness of the device design is embodied. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic view of the structure of the application;

[0020] Figure 2 It is a split view schematic view of the base structure of the application;

[0021] Figure 3 It is a whole schematic view of the Kirschner needle body structure of the application;

[0022] Figure 4 It is a whole schematic view of the holder structure of the application;

[0023] Figure 5 It is a whole schematic view of the tracer body structure of the application;

[0024] Figure 6 It is a whole schematic view of the damping cover structure of the application;

[0025] Figure 7 It is a split view schematic view of the damping ring seat structure of the application.

[0026] In the figure: 1, base; 2, damping cover; 3, Kirschner needle body; 4, mounting groove; 5, Kirschner needle locking block; 6, bolt mounting block; 7, Kirschner needle locking bolt; 8, holder; 9, damping ring seat; 10, tracer body; 11, plug-in hole; 12, movable slot; 13, adjusting ball; 14, adjusting rod; 15, tightening seat; 16, tightening bolt; 17, damping ring sleeve; 18, gasket; 19, elastic rubber strip; 20, buffer soft cotton; 21, conical rubber cover; 22, sealing ring; 23, damping top groove; 24, shrinkable air bag; 25, damping extrusion seat; 26, first plug-in groove; 27, second plug-in groove; 28, positioning pin; 29, compression spring; 30, snap spring; 31, thrust bearing. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0028] Please refer to Figures 1-7 An embodiment provided by the present application comprises:

[0029] The orthopedic surgery tracer fixing device comprises a base 1, the surface of the base 1 is fixedly connected with a damping cover 2, two groups of Kirschner needle bodies 3 are movably inserted into the inside of the base 1 and the damping cover 2, a mounting groove 4 is formed in the inside of the base 1, a Kirschner needle locking block 5 is arranged in the inside center of the mounting groove 4, a bolt mounting block 6 is movably connected to one side of the Kirschner needle locking block 5, a Kirschner needle locking bolt 7 is movably connected to one side of the bolt mounting block 6, a damping top groove 23 is formed in the inside of the damping cover 2, a shrinkable air bag 24 is arranged on one side of the inner wall of the damping top groove 23, a damping extrusion seat 25 is fixedly connected to one end of the shrinkable air bag 24, a first plug-in groove 26 is formed in the surface of the damping cover 2, a second plug-in groove 27 is formed in the surface of the base 1, a positioning pin 28 is arranged between the base 1 and the Kirschner needle locking block 5, a compression spring 29 is sleeved on the outer surface of the positioning pin 28, a snap spring 30 is arranged between the Kirschner needle locking block 5 and the bolt mounting block 6, a thrust bearing 31 is sleeved on the outer surface of the snap spring 30, the base 1 is used for mounting and fixing the Kirschner needle body 3, the Kirschner needle locking block 5 and the bolt mounting block 6, the Kirschner needle locking block 5 is used for pushing the Kirschner needle body 3 by rotating the Kirschner needle locking bolt 7 clockwise to press the Kirschner needle body 3, rotating the Kirschner needle locking bolt 7 counterclockwise to move the Kirschner needle locking block away from the base 1 to loosen the Kirschner needle body 3, the Kirschner needle locking bolt 7 is used for tightening inward along the threads on the bolt mounting block 6 to push the Kirschner needle locking block 5 to press the Kirschner needle body 3, and the compression spring 29 is prevented from pushing the Kirschner needle locking block 5 to loosen the Kirschner needle body 3.

[0030] The gimbal 8 is fixedly connected to one end of the base 1, one end of the gimbal 8 is movably connected to the damping ring seat 9, the damping ring seat 9 is provided with a tracer body 10 at one end, the center of the back of the tracer body 10 is provided with a plug-in hole 11, the side and the inside of the gimbal 8 are provided with a movable groove 12, the inside of the movable groove 12 is movably connected to an adjusting ball 13, one end of the adjusting ball 13 is fixedly connected to an adjusting rod 14, the other side of the gimbal 8 is provided with a tightening seat 15, the inside of the tightening seat 15 is provided with a tightening bolt 16, the inside of the damping ring seat 9 is movably connected to a damping ring sleeve 17 in the center, the inner wall of the damping ring sleeve 17 is provided with a sealing gasket 18, the four corners of the side of the damping ring sleeve 17 are provided with an elastic rubber strip 19, the four sides of the side of the damping ring sleeve 17 are provided with a buffer soft cotton 20, the surface of the damping ring seat 9 is fixedly connected to a conical rubber cover 21, the surface of the conical rubber cover 21 is provided with a sealing ring 22, the bolt mounting block 6 is used to install the kirsch needle locking bolt 7 and connect the base 1, prevent the kirsch needle locking block 5 from being pulled out of the base 1, the positioning pin 28 is used to fix the movement track of the kirsch needle locking block 5, the compression spring 29 releases the thrust force through elastic deformation, when the kirsch needle locking bolt 7 is counterclockwise rotated, the kirsch needle locking block 5 is pushed outwards, the kirsch needle body 3 is loosened, the thrust bearing 31 is used to push the kirsch needle locking bolt 7 inwards when the kirsch needle locking bolt 7 is clockwise rotated, the clamping spring 30 is used to install the thrust bearing 31 on the shaft of the kirsch needle locking bolt 7, prevent the thrust bearing 31 from falling off, the gimbal 8 is used to install the tracer body 10, adjust the angle and direction of the tracer body 10, fix the angle and direction of the tracer body 10 by locking the tightening bolt 16 on the gimbal 8.

[0031] Working principle: before use, install the positioning pin 28 in the corresponding installation hole in the base 1, then install the compression spring 29 into the installation hole of the base 1 through the positioning pin 28, align the kirsch needle locking bolt 7 with the threaded hole on the bolt mounting block 6, clockwise install the kirsch needle locking bolt 7 on the bolt mounting block 6, then install the thrust bearing 31 along the shaft part of the kirsch needle locking bolt 7, install the clamping spring 30 in the groove of the shaft part of the kirsch needle locking bolt 7, take out the kirsch needle locking block 5, with the knurled surface facing inwards, install the installation hole of the kirsch needle locking block 5 inwards into the base 1, finally fix the bolt mounting block 6 which is assembled to the base 1 with a screw, 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, complete the installation of the gimbal;

[0032] In use, first, two 1.5mm Kirschner needle bodies 3 are fixed on the patient according to the requirements of the operator, part of the Kirschner needle body 3 needs to be exposed on the surface of the patient's skin, the second insertion slot 27 on the base 1 is aligned with the two Kirschner needle bodies 3, the base 1 is inserted along the Kirschner needle body 3, the bottom is as close as possible to the surface of the patient's skin, the Kirschner needle locking bolt 7 is rotated clockwise, the Kirschner needle locking block 5 is pushed to the slot direction in the base 1, the Kirschner needle body 3 is compressed, the tracer body 10 is removed and installed on the adjusting rod 14 at the upper part of the holder 8, the tightening bolt 16 on the tightening seat 15 is loosened, the angle of the tracer body 10 is adjusted according to the needs, the tightening bolt 16 on the tightening seat 15 is tightened, the angle of the patient's tracer body 10 is fixed, and the installation of the tracer body 10 fixing device is completed;

[0033] In use, when the second insertion slot 27 on the base 1 is inserted into the Kirschner needle body 3, it can be inserted from the first insertion slot 26 on the surface of the damping cover 2, and then abut on the surface of the damping extrusion seat 25 inside the damping top slot 23. Then the damping extrusion seat 25 can adaptively contract the contraction air bag 24 at the back, adaptively contract and fix the Kirschner needle body 3, and quickly complete the positioning damping operation of the Kirschner needle body 3 inside the damping cover 2, so that it is more accurate and stable when fixed inside the base 1 subsequently. When the holder 8 drives the tracer body 10 at one end through the adjusting rod 14 on the internal adjusting ball 13 to adjust the angle, the adjusting rod 14 can be tightly sleeved in the damping ring seat 9 through the sealing gasket 18 on the inner wall of the damping ring sleeve 17. When the adjusting rod 14 adjusts the angle, the elastic rubber strips 19 and the soft and soft 20 on the four sides and four corners of the damping ring sleeve 17 cooperate to stably damp the limiting operation, and the damping ring seat 9 and the holder 8 can be sealed and protected by the conical rubber cover 21 and the sealing ring 22, which can ensure more stable damping angle adjustment operation of the tracer body 10. The above is the whole working principle of the present application.

[0034] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present application thus is not limited to the examples described hereinabove; rather, they are included to disclose some embodiments of the application. The scope of the application is to be interpreted in the light of the accompanying claims and prior art, rather than the description set forth above. No reference signs in the claims should be considered as limiting the scope of the claims in any way.

Claims

1. A surgical tracker fixation device for orthopedic surgery, comprising a base (1), characterized in that: A damping cover (2) is fixedly connected to the surface of the base (1). Two sets of Kirschner wire bodies (3) are movably inserted into the base (1) and the damping cover (2). An installation groove (4) is opened inside the base (1). A Kirschner wire locking block (5) is set in the center of the installation groove (4). A bolt mounting block (6) is movably connected to one side of the Kirschner wire locking block (5). A Kirschner wire locking bolt (7) is movably connected to one side of the bolt mounting block (6). A gimbal (8) is fixedly connected to one end of the base (1), and a damping ring seat (9) is movably connected to one end of the gimbal (8). A tracer body (10) is provided at one end of the damping ring seat (9). A plug 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 of 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). The damping ring seat (9) is movably connected to the center of the damping ring (9). The inner wall of the damping ring (17) is provided with a sealing gasket (18). The four corners of the side of the damping ring (17) are provided with elastic rubber strips (19). The four sides of the side of the damping ring (17) are provided with cushioning soft cotton (20). The damping cover (2) is provided with a damping top groove (23). A contraction airbag (24) is provided on one side of the inner wall of the damping top groove (23). One end of the contraction airbag (24) is fixedly connected to a damping compression seat (25).

2. The orthopedic surgical tracer fixation device according to claim 1, characterized in that: A tightening seat (15) is provided on the other side of the gimbal (8), and a tightening bolt (16) is provided inside the tightening seat (15).

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

4. 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 insertion groove (26), and the surface of the base (1) is provided with a second insertion groove (27).

5. The orthopedic surgical tracer fixation 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).

6. The orthopedic surgical tracer fixation device according to claim 1, characterized in that: A retaining ring (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 ring (30).

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