wrist arthroscopic surgery traction frame

Abstract

This invention relates to a traction frame for wrist arthroscopy, comprising a column and a traction device. The traction device includes a traction rope, a traction rope guide wheel assembly, and a traction force control mechanism. A crossbeam is located at the top of the column. A fixed finger sleeve is located at the front end of the traction rope, and the tail end of the traction rope is connected to the traction force control mechanism. The crossbeam includes a mounting beam fixed to the top of the column and a front and rear traction position adjustment beam that slides along the length of the mounting beam. The front and rear traction position adjustment beams are equipped with a telescopic drive device. Left and right traction position adjustment sliders are slidably connected to the front ends of the front and rear traction position adjustment beams. The left and right traction position adjustment sliders are equipped with left and right adjustment drive devices. The traction device also includes a traction force detection sensor for detecting and displaying the traction force. The traction wheel assembly includes a front guide wheel located on the left and right traction position adjustment sliders and an intermediate guide wheel assembly that guides the traction rope from the front guide wheel to the traction force control mechanism. This allows for adjustment of the arm traction position during surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically a traction frame used to traction the arm during wrist arthroscopic surgery. Background Technology

[0002] Arthroscopic surgery refers to surgery performed using an arthroscope. An arthroscope is a rod-shaped optical instrument, about 5 mm in diameter, used by physicians to diagnose and treat joint diseases. This instrument has been widely used since 1970. An arthroscope has a lens at the end of a thin tube. When this tube is inserted into the joint, the internal structures are displayed on a monitor.

[0003] Therefore, the internal structure of the joint can be directly observed. Arthroscopic surgery involves making several small incisions (5-10 mm) in the skin, inserting a camera and surgical instruments into the joint, and then performing the procedure under monitor guidance to diagnose and treat various joint diseases.

[0004] The existing traction frame structure used in wrist arthroscopy includes a column, a crossbeam at the top of the column, and a traction cable with guide wheels on the crossbeam. The crossbeam allows for suspended traction, avoiding obstruction of other instruments. One end of the traction cable is connected to a finger cot, which secures it to the surgeon's finger. The other end of the traction cable carries a weight (such as a saline bag) to provide traction. The column has casters for easy transport and a locking device to secure the traction frame to the operating table during surgery. However, the existing traction frame has the following technical drawbacks: 1. The traction position of the arm is fixed, but adjustments are often needed during surgery, making adjustments inconvenient; 2. The traction force is controlled by the weight (such as a saline bag), resulting in imprecise control. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of existing technologies and provide a wrist arthroscopic traction frame that allows for convenient adjustment of the arm traction position during surgery.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wrist arthroscopic traction frame includes a column and a traction device. The traction device includes a traction rope, a traction rope guide wheel assembly for guiding the traction rope, and a traction force control mechanism. A fixing clamp is provided at the lower part of the column, and a crossbeam is provided at the top of the column, with the length direction of the crossbeam being the front-to-back direction, the length direction of the column being the height direction, and the direction perpendicular to the front-to-back and height directions being the left-to-right direction. A fixing finger sleeve is provided at the front end of the traction rope, and the tail end of the traction rope is connected to the traction force control mechanism. The crossbeam includes a mounting beam fixed to the top of the column and a front-to-back traction position adjustment beam that slides along the length direction of the mounting beam. The front-to-back traction position adjustment beam is equipped with a telescopic drive device to drive its movement. A left-to-right traction position adjustment slider is slidably fitted at the front end of the front-to-back traction position adjustment beam, and the left-to-right traction position adjustment slider is equipped with a left-to-right adjustment drive device. The traction device also includes a traction force detection sensor for detecting and displaying the traction force. The traction wheel assembly includes a front guide wheel provided on the left-to-right traction position adjustment slider and an intermediate guide wheel assembly that guides the traction rope from the front guide wheel to the traction force control mechanism.

[0008] By adopting the above technical solution, the crossbeam is telescopic, and the movement of the front and rear traction adjustment beam allows for adjustment of the traction position of the arm in the front and rear directions. The movement of the left and right traction adjustment sliders allows for adjustment of the traction position of the arm in the left and right directions, thereby realizing the adjustment of the arm traction position during surgery and facilitating manipulation during the operation. The traction force detection sensor facilitates the display and control of the traction force.

[0009] Preferably, the traction force control mechanism is a traction rope winding mechanism. The traction rope winding mechanism includes a motor housing located at the bottom of the column. The motor housing contains a winding motor, a winding worm, a winding worm wheel, a winding wheel shaft, and a winding wheel. The output end of the winding motor is connected to the winding worm, which corresponds to and engages with the winding worm wheel. The winding wheel shaft is rotatably mounted within the motor housing, and the winding worm wheel and winding wheel are mounted on the winding wheel shaft. This structural design utilizes a worm gear drive to achieve winding and traction force control of the traction rope. The worm gear has advantages such as low noise, large transmission ratio, and large transmission force, effectively ensuring reliable winding and reliable traction force control.

[0010] Preferably, the traction device further includes a traction force balancing mechanism that ensures a constant traction force during the movement of the front and rear traction position adjusting beams and left and right traction position adjusting sliders to adjust the traction position of the arm. The traction force balancing mechanism includes an inclined beam located at the rear side of the corner where the column and the mounting beam connect. One end of the inclined beam is fixed to the mounting beam, and the other end of the inclined beam is fixed to the column. A traction force adjusting support seat with a traction rope steering support guide wheel is slidably fitted on the inclined beam. The traction rope is wound around and supported on the traction rope steering support guide wheel of the traction force adjusting support seat. The sliding trajectory of the traction force adjusting support seat forms a triangle with the column and the mounting beam. The traction force adjusting support seat is fitted with a traction force adjusting driver that drives its sliding. Under this structural design, the traction force balancing mechanism ensures that the traction force of the traction rope remains constant during the adjustment of the traction position by the front and rear traction position adjusting beams and the left and right traction position adjusting sliders. Furthermore, the traction force balancing mechanism adopts a traction force adjusting support seat located at the corner where the column and the installation beam connect to support the traction rope. This not only guides the traction rope, but also allows for easy adjustment of the support height of the traction rope due to the larger space at the corner, i.e., adjustment of the traction rope tension. This achieves the control of the traction force of the traction rope and has the advantages of simple structure and convenient operation.

[0011] Preferably, the traction rope steering support guide wheel supports a traction rope closed wheel. The traction rope closed wheel and the traction rope support guide wheel are interlocked and can rotate relative to each other. The traction rope closed wheel and the traction rope support guide wheel form a radially closed traction rope guide insertion hole. The traction rope closed wheel is fitted with a closed wheel mounting seat, which is slidably fitted onto the inclined beam in the same sliding direction as the traction force adjusting support seat. The closed wheel mounting seat is fitted with a drive spring that drives the traction rope closed wheel to be supported on the traction rope support wheel. With this structural design, the traction rope can be effectively restricted on the traction rope steering support guide wheel.

[0012] Preferably, the intermediate guide wheel assembly includes a pair of left and right limiting guide wheels fixed to the mounting beam and arranged opposite each other in the left-right direction, and a pair of longitudinal limiting guide wheels fixed to the mounting beam and arranged opposite each other in the up-down direction. Both the left and right limiting guide wheels and the longitudinal limiting guide wheels are formed by two threaded wheels with annular grooves that are interlocked and rotatable relative to each other. The left and right limiting guide wheels form left-right limiting threading holes through the two threaded wheels, and the longitudinal limiting guide wheels form longitudinal limiting threading holes through the two threaded wheels. The left-right limiting threading holes and the longitudinal limiting threading holes are located at the same horizontal position, and the left and right limiting guide wheels are located between the longitudinal limiting guide wheels and the front guide wheel. This structural design ensures that the traction rope has a good guiding effect during the adjustment of the left and right traction positions.

[0013] Preferably, the left-right adjustment drive device includes a hollow shaft motor, a drive shaft, a left-right adjustment drive worm, a left-right adjustment drive worm wheel, a left-right adjustment transmission shaft, and a left-right adjustment drive screw. The hollow shaft motor is fixedly mounted on the mounting beam. A spline sleeve is provided in the shaft hole of the hollow shaft of the hollow shaft motor. The drive shaft is a spline shaft that corresponds to and mates with the spline sleeve. The drive shaft is rotatably and axially slidingly fitted on the mounting beam. The spline shaft and the left-right adjustment drive worm are connected via a coupling. The left-right adjustment drive worm and the left-right adjustment drive worm wheel are in a transmission engagement. The left-right adjustment drive worm wheel is mounted on the left-right adjustment transmission shaft. The left-right adjustment transmission shaft and the left-right adjustment drive screw are arranged coaxially. The left-right adjustment transmission shaft and the left-right adjustment drive screw are connected via a gear pair. The left-right adjustment drive screw is threadedly engaged with the left-right traction position adjustment slider. With this structural design, the spline shaft and spline sleeve work together to achieve power transmission between the hollow shaft motor and the drive shaft. At the same time, they can slide relative to each other in the axial direction to accommodate the front and rear adjustment movements of the front and rear traction position adjustment beams. The power transmission is achieved through the cooperation of a worm gear and nut screw mechanism, which has the advantages of compact structure and stable transmission.

[0014] Preferably, the telescopic drive device includes a front and rear traction position adjusting beam drive motor, a front and rear traction position adjusting beam drive screw, and a front and rear traction position adjusting beam drive nut. The front and rear traction position adjusting beam drive nut is fixedly installed on the front and rear traction position adjusting beam. The front and rear traction position adjusting beam drive screw corresponds to and cooperates with the front and rear traction position adjusting beam drive nut. The front and rear traction position adjusting beam drive screw is rotatably mounted on the mounting beam. The front and rear traction position adjusting beam drive screw is driven and connected to the output end of the front and rear traction position adjusting beam drive motor. This structural design, using a screw and nut to achieve drive adjustment, has the advantages of stable transmission and precise and reliable adjustment.

[0015] The present invention will now be further described with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the traction frame structure for wrist arthroscopic surgery according to a specific embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the crossbeam portion in a specific embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the traction rope winding mechanism according to a specific embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the left and right traction position adjustment slider drive structure from a bottom-view perspective of a specific embodiment of the present invention;

[0020] Figure 5 This is a schematic diagram of the left and right traction position adjustment slider drive structure from a top view of a specific embodiment of the present invention;

[0021] Figure 6 This is a schematic diagram of the traction force balancing mechanism according to a specific embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the left and right limiting guide wheels and the longitudinal limiting guide wheel on the mounting beam in a specific embodiment of the present invention. Detailed Implementation

[0023] See appendix Figures 1-7 This invention discloses a traction frame for wrist arthroscopy surgery, including a column 1 and a traction device. The column 1 is a telescopic tube structure for easy height adjustment. The traction device includes a traction rope 2, a traction rope guide wheel assembly for guiding the traction rope, and a traction force control mechanism 3. A fixing clamp 11 is provided at the lower part of the column 1. The fixing clamp 11 is a conventional technology, so its structure will not be described in detail. A crossbeam 4 is provided at the top of the column 1, with the length direction of the crossbeam 4 being the front-to-back direction. Figure 1 The direction of the X-axis is the same as the length of column 1, which is the height direction. Figure 1 The direction of the Y-axis (the direction of the center) is perpendicular to the front-back direction and the height direction; the left-right direction is perpendicular to the center. Figure 1 The front end of the traction rope 2 is provided with a fixed finger sleeve 21 (in the direction of the Z-axis). The fixed finger sleeve 21 is a conventional technology, so its structure will not be described in detail. The tail end of the traction rope 2 is connected to the traction force control mechanism 3. The crossbeam 4 includes an installation beam 41 fixed to the top of the column 1, and a front and rear traction position adjustment beam 42 that slides and guides along the length of the installation beam 41. The front and rear traction position adjustment beam 42 is equipped with a telescopic drive device to drive its movement. The front end of the front and rear traction position adjustment beam 42 is equipped with a left and right traction position adjustment slider 5 that slides left and right. The left and right traction position adjustment slider 5 is equipped with a left and right adjustment drive device. The traction device also includes a traction force detection sensor (not shown in the figure) for detecting and displaying the traction force. The traction wheel assembly includes a front guide wheel 61 provided on the left and right traction position adjustment slider 5 and an intermediate guide wheel group that guides the traction rope 2 from the front guide wheel 61 to the traction force control mechanism 3. The crossbeam is telescopic, with the front and rear traction adjustment beams allowing for adjustment of the arm's traction position in the forward and backward directions. The left and right traction adjustment sliders allow for adjustment of the arm's traction position in the left and right directions, enabling precise control of the arm's traction position during surgery and facilitating manipulation. A traction force detection sensor facilitates the display and control of the traction force. The traction force detection sensor can be a tension gauge mounted on the traction rope; however, for automated control, other detection sensors may be used, as detailed below.

[0024] The traction control mechanism 3 is a traction rope winding mechanism, which includes a motor housing 31 located at the bottom of the column 1. The motor housing 31 houses a winding motor 32, a winding worm 33, a winding worm wheel 34, a winding wheel shaft 35, and a winding wheel 36. The output end of the winding motor 32 is connected to the winding worm 33, and the winding worm 33 and winding worm wheel 34 are correspondingly engaged (meshing transmission). The winding wheel shaft 35 is rotatably mounted within the motor housing 31 and can be installed via bearings. The winding worm wheel 34 and winding wheel 36 are mounted on the winding wheel shaft 35. The mounting and engagement structure of the winding worm wheel 34, winding wheel 36, and winding wheel shaft 35 is conventional and will not be described further. The worm gear drive achieves winding and traction force control of the traction rope. The worm gear has advantages such as low noise, large transmission ratio, and large transmission force, effectively ensuring reliable winding and reliable traction force control. The motor housing is placed at the bottom of the column to improve the overall stability of the traction frame. The device involves gears, and the traction force detection sensor can be a torque sensor that detects the output torque of the winding motor. The data detected by the torque sensor is converted into the traction force of the traction rope and displayed on the screen. The traction device also includes a traction force balancing mechanism 7 that ensures a constant traction force during the movement of the front and rear traction position adjusting beam 42 and the left and right traction position adjusting slider 5 to adjust the traction position of the arm. The traction force balancing mechanism can use the winding and unwinding of the traction rope by the winding motor to achieve traction force control, but this control method is inconvenient to adjust. Therefore, the traction force balancing mechanism 7 used in this invention includes an inclined beam 71 located at the rear side of the corner where the column 1 and the mounting beam 41 connect. One end of the inclined beam 71 is fixed to the mounting beam 41, and the other end is fixed to the column 1. A traction force adjusting support seat 73 with a traction rope steering support guide wheel 72 is slidably fitted on the inclined beam 71. The traction force adjusting support seat 73 achieves a sliding fit through a guide rod and a guide hole. The traction rope steering support guide wheel 72 is rotatably mounted on the traction force adjusting support seat 73 via a wheel axle. The traction rope 2 is wound around and supported on the traction rope steering support guide wheel 72 of the traction force adjusting support seat 73. The sliding trajectory of the traction force adjusting support seat 73 forms a triangle with the column 1 and the mounting beam 41. The traction force adjusting support seat 73 is fitted with a traction force adjusting actuator 74 that drives its sliding. The traction force adjusting actuator can be an electric cylinder, or it can be a pneumatic cylinder. The traction force balancing mechanism uses a traction force adjustment support seat located at the corner where the column and the mounting beam connect to support the traction rope. It not only guides the traction rope, but also allows for easy adjustment of the support height of the traction rope due to the larger space at the corner, which in turn adjusts the tension of the traction rope. This achieves control over the traction force of the traction rope and has the advantages of simple structure and convenient operation.The traction force detection sensor can also be a pressure sensor on the traction force adjustment support 73 (not shown in the figure, but the pressure sensor is a conventional component that can be installed between the output shaft of the electric cylinder and the traction force adjustment support 73) to detect the pressure of the traction rope pressing on the traction rope steering support guide wheel, thereby displaying the magnitude of the traction force of the traction rope and facilitating the adjustment of the traction force to achieve traction force balance.

[0025] To ensure reliable positioning of the traction rope, a traction rope closed wheel 75 is supported on the traction rope steering support guide wheel 72. The traction rope closed wheel 75 and the traction rope support guide wheel 73 are interlocked and can rotate relative to each other. The traction rope closed wheel 75 and the traction rope support guide wheel 73 form a radially closed traction rope guide insertion hole. The traction rope closed wheel 75 is fitted with a closed wheel mounting seat 76, which is slidably fitted onto the inclined beam 71 in the same sliding direction as the traction force adjusting support seat 73. The closed wheel mounting seat is fitted with a drive spring 77 that drives the traction rope closed wheel to be supported on the traction rope support wheel. This effectively ensures that the traction rope is confined on the traction rope steering support guide wheel.

[0026] To further ensure the reliable position of the traction rope during traction position adjustment, the intermediate guide wheel assembly includes a pair of left and right limiting guide wheels 62 fixed to the mounting beam 41 and arranged opposite each other in the left and right direction, and a pair of longitudinal limiting guide wheels 63 fixed to the mounting beam 41 and arranged opposite each other in the up and down direction. Both the left and right limiting guide wheels 62 and the longitudinal limiting guide wheels 63 are formed by two threaded wheels with annular grooves that are interlocked and rotatable relative to each other. The left and right limiting guide wheels 62 form left and right limiting threading holes through the two threaded wheels, and the longitudinal limiting guide wheels 63 form longitudinal limiting threading holes through the two threaded wheels. The left and right limiting threading holes and the longitudinal limiting threading holes are located at the same horizontal position, and the left and right limiting guide wheels 62 are located between the longitudinal limiting guide wheels 63 and the front guide wheel 61. This ensures that the traction rope has a good guiding and supporting effect during left and right traction position adjustment. That is, it ensures that when the front guide wheel moves with the left and right traction position adjustment slider, the traction rope can reliably pass through the traction rope turning support guide wheel on the traction force adjustment support seat, ensuring reliable traction force adjustment.

[0027] In this specific embodiment, the left-right adjustment drive device includes a hollow shaft motor 81, a drive shaft 82, a left-right adjustment drive worm 83, a left-right adjustment drive worm wheel 84, a left-right adjustment transmission shaft 85, and a left-right adjustment drive screw 86. The hollow shaft motor 81 is a motor with a hollow output shaft, which is a readily available device on the market. Therefore, its structure will not be described in detail in this specific embodiment. The hollow shaft motor 81 is fixedly installed on the mounting beam 41. A spline sleeve 811 is provided in the shaft hole of the hollow shaft of the hollow shaft motor 81. The spline sleeve 811 can be installed integrally with the hollow shaft of the hollow shaft motor 81 or using existing fixing and assembly methods such as flat keys, snap rings, screws, or tight fits. The drive shaft 82 is a splined shaft that mates with the splined sleeve 811. The drive shaft 82 is rotatably and axially slidingly fitted onto the mounting beam 41. The left-right adjustment drive worm 83 is rotatably fitted onto the front-rear traction position adjustment beam 41. The splined shaft and the left-right adjustment drive worm 83 are connected via a coupling. The left-right adjustment drive worm 83 is driven by the left-right adjustment drive worm wheel 84, which is mounted on the left-right adjustment transmission shaft 85. The left-right adjustment transmission shaft 85 and the left-right adjustment drive screw 86 are arranged coaxially and are connected via a gear pair. The left-right adjustment drive screw 86 is threadedly fitted onto the left-right traction position adjustment slider 5. The fit between the splined shaft and the splined sleeve enables power transmission between the hollow shaft motor and the drive shaft. Simultaneously, they can slide relative to each other axially to accommodate the front-rear adjustment of the front-rear traction position adjustment beam. The power transmission is achieved through a worm gear and nut-screw mechanism, resulting in a compact structure and stable transmission.

[0028] In addition, the telescopic drive device includes a front and rear traction position adjusting beam drive motor 91, a front and rear traction position adjusting beam drive screw 92, and a front and rear traction position adjusting beam drive nut 93. The front and rear traction position adjusting beam drive nut 93 is fixedly installed on the front and rear traction position adjusting beam 42. The front and rear traction position adjusting beam drive screw 92 corresponds to and cooperates with the front and rear traction position adjusting beam drive nut 93. The front and rear traction position adjusting beam drive screw 92 is rotatably mounted on the mounting beam 41. The front and rear traction position adjusting beam drive screw 92 is driven and connected to the output end of the front and rear traction position adjusting beam drive motor 91. The use of a screw and nut to achieve drive adjustment has the advantages of stable transmission and precise and reliable adjustment.

Claims

1. A wrist arthroscopic traction frame, comprising a column and a traction device, the traction device comprising a traction rope, a traction rope guide wheel assembly for guiding the traction rope through, and a traction force control mechanism; a fixing clamp is provided at the lower part of the column; a crossbeam is provided at the top of the column, with the length direction of the crossbeam being the front-to-back direction, the length direction of the column being the height direction, and the direction perpendicular to the front-to-back and height directions being the left-to-right direction; a fixing finger sleeve is provided at the front end of the traction rope, and the tail end of the traction rope is connected to the traction force control mechanism, characterized in that: The crossbeam includes a mounting beam fixed to the top of the column, and a front and rear traction position adjustment beam that slides and guides along the length of the mounting beam. The front and rear traction position adjustment beams are equipped with a telescopic drive device to drive their movement. The front end of the front and rear traction position adjustment beams is slidably fitted with a left and right traction position adjustment slider, which is equipped with a left and right adjustment drive device. The traction device also includes a traction force detection sensor for detecting and displaying the traction force. The traction wheel assembly includes a front guide wheel mounted on the left and right traction position adjustment sliders and an intermediate guide wheel assembly that guides the traction rope from the front guide wheel to the traction force control mechanism. The traction force control mechanism is a traction rope winding mechanism, which includes a motor housing located at the bottom of the column. The motor housing contains a winding motor, a winding worm, a winding worm wheel, a winding wheel shaft, and a winding wheel. The output end of the winding motor is connected to a winding wheel. The worm gear and the winding worm wheel are correspondingly engaged. The winding wheel shaft is rotatably mounted inside the motor housing. The winding worm wheel and the winding wheel are mounted on the winding wheel shaft. The traction device also includes a traction force balancing mechanism that ensures constant traction force during the movement of the front and rear traction position adjusting beam and the left and right traction position adjusting slider to adjust the traction position of the arm. The traction force balancing mechanism includes an inclined beam located at the rear side of the corner where the column and the mounting beam are connected. One end of the inclined beam is fixed to the mounting beam, and the other end of the inclined beam is fixed to the column. The column is a telescopic tube structure. A traction force adjusting support seat with a traction rope steering support guide wheel is slidably engaged on the inclined beam. The traction rope is wound around and supported on the traction rope steering support guide wheel of the traction force adjusting support seat. The sliding trajectory of the traction force adjusting support seat forms a triangle with the column and the mounting beam. The traction force adjusting support seat is engaged with a traction force adjusting driver to drive its sliding.

2. The wrist arthroscopic traction frame according to claim 1, characterized in that: The traction rope steering support guide wheel is supported by a traction rope closed wheel. The traction rope closed wheel and the traction rope support guide wheel are interlocked and can rotate relative to each other. The traction rope closed wheel and the traction rope support guide wheel form a radially closed traction rope guide insertion hole. The traction rope closed wheel is fitted with a closed wheel mounting seat. The closed wheel mounting seat is slidably fitted on the inclined beam in the same sliding direction as the traction force adjustment support seat. The closed wheel mounting seat is fitted with a drive spring that drives the traction rope closed wheel to be supported on the traction rope support wheel.

3. The wrist arthroscopic traction frame according to claim 1, characterized in that: The intermediate guide wheel assembly includes a pair of left and right limiting guide wheels fixed to the mounting beam and arranged opposite each other in the left and right direction, and a pair of longitudinal limiting guide wheels fixed to the mounting beam and arranged opposite each other in the up and down direction. The left and right limiting guide wheels and the longitudinal limiting guide wheels are both composed of two wire wheels with annular grooves that are fastened to each other and can rotate relative to each other. The left and right limiting guide wheels form left and right limiting wire holes through the two wire wheels, and the longitudinal limiting guide wheels form longitudinal limiting wire holes through the two wire wheels. The left and right limiting wire holes and the longitudinal limiting wire holes are located at the same horizontal position, and the left and right limiting guide wheels are located between the longitudinal limiting guide wheels and the front guide wheels.

4. The wrist arthroscopic traction frame according to claim 1, characterized in that: The left-right adjustment drive device includes a hollow shaft motor, a drive shaft, a left-right adjustment drive worm, a left-right adjustment drive worm wheel, a left-right adjustment transmission shaft, and a left-right adjustment drive screw. The hollow shaft motor is fixedly mounted on the mounting beam. A spline sleeve is provided in the shaft hole of the hollow shaft of the hollow shaft motor. The drive shaft is a spline shaft that corresponds to and mates with the spline sleeve. The drive shaft is rotatable and axially sliding on the mounting beam. The spline shaft is connected to the left-right adjustment drive worm via a coupling. The left-right adjustment drive worm is driven by the left-right adjustment drive worm wheel. The left-right adjustment drive worm wheel is mounted on the left-right adjustment transmission shaft. The left-right adjustment transmission shaft and the left-right adjustment drive screw are arranged coaxially. The left-right adjustment transmission shaft and the left-right adjustment drive screw are connected by a gear pair. The left-right adjustment drive screw is threadedly engaged with the left-right traction position adjustment slider.

5. The wrist arthroscopic traction frame according to claim 1, characterized in that: The telescopic drive device includes a front and rear traction position adjusting beam drive motor, a front and rear traction position adjusting beam drive screw, and a front and rear traction position adjusting beam drive nut. The front and rear traction position adjusting beam drive nut is fixedly installed on the front and rear traction position adjusting beam. The front and rear traction position adjusting beam drive screw is correspondingly engaged with the front and rear traction position adjusting beam drive nut. The front and rear traction position adjusting beam drive screw is rotatably mounted on the mounting beam. The front and rear traction position adjusting beam drive screw is driven connected to the output end of the front and rear traction position adjusting beam drive motor.

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