A traction reduction device for bone surgery

Abstract

The application belongs to the technical field of orthopedic traction, and particularly relates to a traction reduction device for bone surgery, which comprises a lower support, an adjusting support is slidably adjusted on the lower support, a receiving support and a suspension frame are respectively hinged at two ends of the adjusting support, a pulling sleeve is hinged at one end of the lower support, a detection tube is fixedly connected to the pulling sleeve, the detection tube is communicated with an external constant-pressure air source through a pipeline, and the hollow part of the detection tube is communicated with the hollow part of the pulling sleeve through an air pipe. The application drives the moving plate and the guide ring to cooperate by using high-pressure air, controls the airflow to enter the first cavity to push the stretching rod to realize traction, dynamically balances the air pressure to adaptively adjust the traction force, separates the pulling sleeve into the first cavity and the second cavity by using the sealing plate, cooperates with the reduction spring, reversely push the moving plate to trigger the detection switch when the patient is in spasm, realizes instant perception and automatic alarm of the spasm.

Description

Technical Field

[0001] This invention belongs to the field of orthopedic traction technology, specifically referring to a traction reduction device for bone setting surgery. Background Technology

[0002] In orthopedic clinical treatment, traction is an important method for managing fractures, dislocations, and joint diseases. By continuously applying appropriate traction force, it achieves therapeutic goals such as fracture reduction, deformity correction, and joint decompression. Currently, commonly used traction devices in clinical practice mainly include Thomas frames, Braun frames, and various gravity traction devices. Their basic structure mostly consists of a frame combined with pulleys, traction ropes, and weights.

[0003] However, traditional traction devices mostly rely on the gravity of a weight to provide traction force. The magnitude of the traction force is fixed and difficult to adjust precisely. It cannot be adjusted in real time according to individual patient differences, changes in muscle tension, and the needs of the treatment stage. During traction, patients may experience muscle spasms due to pain or changes in body position. Sudden retraction of the limb can cause a sudden change in traction force. Existing devices lack effective spasm monitoring and early warning mechanisms, making it difficult for medical staff to detect and deal with spasms in a timely manner, which poses a safety hazard of secondary injury. Summary of the Invention

[0004] To address the above issues and overcome the shortcomings of existing technologies, this invention provides a traction and repositioning device for bone setting surgery. This application utilizes an air inlet pipe to input high-pressure air, driving a moving plate that cooperates with a guide ring. Airflow is controlled to enter the first cavity, pushing a tension rod to achieve traction. The traction force is adaptively adjusted through dynamic air pressure balance, solving the technical problem of fixed traction force and difficulty in real-time adjustment in existing traction devices. A sealing plate divides the traction sleeve into a first cavity and a second cavity. With the aid of a repositioning spring, compressed air in the first cavity reverses direction to push the moving plate during patient spasm, triggering a detection switch. This enables immediate spasm detection and automatic alarm, resolving the safety hazards of existing traction devices' inability to monitor spasm and the risk of secondary injury.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The present invention proposes a traction reduction device for bone setting surgery, including a lower support, an adjustable support that is slidably adjusted on the lower support, a support bracket and a suspension frame that are respectively hinged at both ends of the adjustable support, a support frame that is fixedly connected to the adjustable support, a traction rope that is sleeved on the support frame and the suspension frame through guide wheels, a traction bow that is fixedly connected to one end of the traction rope, the traction bow that is connected to the patient's bone through Kirschner wires, a traction sleeve that is hinged to one end of the lower support on the same side as the suspension frame, a detection tube that is fixedly connected to the traction sleeve, the detection tube that is connected to an external constant pressure air source through a pipeline, and the hollow part of the detection tube that is connected to the hollow part of the traction sleeve through an air pipe.

[0006] Preferably, a guide ring is coaxially fixedly connected to the inner circumferential wall of the detection tube, and a movable plate is slidably extended from the inner circumferential wall of the guide ring. A detection spring is fixedly connected to one side of the movable plate and the inner circumferential wall of the detection tube. A detection switch is fixedly connected to the inner circumferential wall of the detection tube. The detection switch is located at the end of the guide ring away from the initial position of the movable plate. The detection switch is electrically connected to an external constant pressure air source and a buzzer. An air inlet pipe is fixedly connected to one side of the outer circumferential wall of the detection tube, and a one-way valve is fixedly connected to the air inlet pipe.

[0007] Preferably, a tension rod is slidably connected to the inner circumferential wall of the traction sleeve, and the other end of the tension rod is fixedly connected to the other end of the traction rope. One end of the tension rod is provided with a sealing plate that is coaxially fixedly connected and slidably sealed to the inner wall of the traction sleeve. The sealing plate divides the hollow part of the traction sleeve into a first cavity and a second cavity. The first cavity is connected to the hollow part of the detection tube through an air pipe. A return spring is provided in the second cavity. The two ends of the return spring are fixedly connected to the traction sleeve and the tension rod, respectively. A discharge hole is penetrating one side of the traction sleeve.

[0008] Preferably, an airbag placement pad is fixedly connected to the adjusting bracket, and a supporting airbag pad is fixedly connected to the receiving support. The airbag placement pad and the supporting airbag pad are connected to an external constant pressure air source through an air tube.

[0009] Preferably, the adjusting bracket has a first electric telescopic rod and a second electric telescopic rod hinged to both sides. The telescopic rod of the first electric telescopic rod is hinged to the support bracket, and the telescopic rod of the second electric telescopic rod is hinged to the suspension frame.

[0010] The beneficial effects achieved by the present invention using the above structure are as follows: 1. This application utilizes a detection mechanism that uses high-pressure air input through an air inlet pipe to drive a moving plate in conjunction with a guide ring. It controls the airflow into the first cavity to push the tension rod to achieve traction. During the traction process, the air pressure in the first and second cavities is dynamically balanced, which can adaptively adjust the traction force according to the limb resistance of different patients. After the traction is in place, the air pressure balance is automatically reset, realizing precise control and automatic maintenance of the traction force. This solves the technical problems of existing traction devices having fixed traction force, difficulty in real-time adjustment according to individual patient differences, and easy to cause insufficient or excessive traction. 2. This application uses a sealing plate to divide the traction sleeve into a first chamber and a second chamber. Combined with a buffer reset mechanism consisting of a reset spring and a discharge hole, it achieves smooth stretching during normal traction. When the patient experiences a sudden retraction of a spastic limb, the compressed air in the first chamber pushes the moving plate in the opposite direction to trigger the detection switch, realizing the instantaneous perception of the spastic state and automatic alarm shutdown. This solves the safety hazards of existing traction devices that cannot monitor patient spasticity, cannot provide timely early warning and treatment, and pose a risk of secondary injury. 3. This application utilizes a support and adjustment system consisting of a sliding adjustable bracket, a hinged support, and a suspension frame, in conjunction with an airbag support structure consisting of an airbag pad and a supporting airbag pad, to achieve flexible adjustment and soft support of the patient's limb placement angle, disperse limb pressure, avoid the risk of local pressure ulcers caused by long-term traction, and solve the technical problems of inconvenient adjustment of existing traction devices and the occurrence of local pressure ulcers due to long-term traction. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof.

[0012] Figure 1 This is a schematic diagram of the overall structure of a traction and reduction device for bone setting surgery proposed in this invention; Figure 2 This is a schematic cross-sectional view of the overall structure of a traction and reduction device for bone setting surgery proposed in this invention. Figure 3 This is a schematic cross-sectional view of the connection between the traction sleeve and the detection tube of a traction reduction device for bone setting surgery proposed in this invention; Figure 4 This is a schematic cross-sectional view of the detection tube connection structure of a traction reduction device for bone setting surgery proposed in this invention; Figure 5 This is a schematic diagram of the overall structure of a traction and reduction device for bone setting surgery proposed in this invention from another perspective. Figure 6 This is a rear view schematic diagram of the overall structure of a traction reduction device for bone setting surgery proposed in this invention.

[0013] In the attached diagram: 1. Lower support, 2. Adjusting support, 3. Support bracket, 4. Suspension frame, 5. Support frame, 6. Traction bow, 7. Traction rope, 8. Pull sleeve, 9. Detection tube, 21. Airbag placement, 31. Airbag support, 32. First electric telescopic rod, 41. Second electric telescopic rod, 81. Tension rod, 82. First cavity, 83. Second cavity, 84. Return spring, 85. Exhaust hole, 86. Sealing plate, 91. Guide ring, 92. Moving plate, 93. Detection spring, 94. Detection switch, 95. Inlet pipe, 951. One-way valve.

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0016] Example 1, as Figures 1-6 As shown, the proposed traction reduction device for bone setting surgery includes a lower support 1, an adjustable support 2 that slides on the lower support 1, and the lower support 1 and the adjustable support 2 are locked together by bolts. The two ends of the adjustable support 2 are respectively hinged to a support bracket 3 and a suspension frame 4. A support frame 5 is fixedly connected to the adjustable support 2. A traction rope 7 is sleeved on the support frame 5 and the suspension frame 4 through guide wheels. A traction bow 6 is fixedly connected to one end of the traction rope 7. The traction bow 6 is connected to the patient's bone through Kirschner wires. A traction sleeve 8 is hinged to one end of the lower support 1 on the same side as the suspension frame 4. A detection tube 9 is fixedly connected to the traction sleeve 8. The detection tube 9 is connected to an external constant pressure air source through a pipeline. The hollow part of the detection tube 9 is connected to the hollow part of the traction sleeve 8 through an air pipe. The inner circumferential wall of the traction sleeve 8 is slidably connected to a tension rod 81, and the other end of the tension rod 81 is fixedly connected to the other end of the traction rope 7. A guide ring 91 is coaxially fixedly connected to the inner circumferential wall of the detection tube 9, and a movable plate 92 is slidably extended from the inner circumferential wall of the guide ring 91.

[0017] like Figures 1-4 As shown, a detection spring 93 is fixedly connected to the inner circumferential wall of the detection tube 9 on one side of the moving plate 92. A detection switch 94 is fixedly connected to the inner circumferential wall of the detection tube 9. The detection switch 94 is located at the end of the guide ring 91 away from the initial position of the moving plate 92, on the moving path of the moving plate 92. The detection switch 94 is electrically connected to an external constant pressure air source and a buzzer. An air inlet pipe 95 is fixedly connected to one side of the outer circumferential wall of the detection tube 9. A one-way valve 951 is fixedly connected to the air inlet pipe 95. The conduction direction of the one-way valve 951 is from the air inlet pipe 95. The detection pipe 9 and the air inlet pipe 95 are connected to an external constant pressure air source (such as compressed air regulated by a pressure reducing valve, with stable and adjustable output pressure). In the initial state, the detection spring 93 pushes the moving plate 92 to seal with the inner circumferential wall of the guide ring 91. When traction is required, the air pressure pushes the moving plate 92 to move, stretching the detection spring 93. After the moving plate 92 and the guide ring 91 are disengaged, air enters the traction sleeve 8. When the moving plate 92 touches the detection switch 94, the external constant pressure air source stops entering, and at the same time, the external buzzer starts to sound an alarm.

[0018] like Figures 1-4 As shown, one end of the tension rod 81 is provided with a sealing plate 86 coaxially fixedly connected and slidably sealed to the inner wall of the tension sleeve 8. The sealing plate 86 divides the hollow part of the tension sleeve 8 into a first cavity 82 and a second cavity 83. The first cavity 82 is connected to the hollow part of the detection tube 9 through an air pipe. The second cavity 83 is provided with a return spring 84. The two ends of the return spring 84 are fixedly connected to the tension sleeve 8 and the tension rod 81, respectively. A discharge hole 85 extends through one side of the tension sleeve 8. When the second cavity 8... 3. During compression, air is discharged through the discharge hole 85. In the initial state, the volume of the second cavity 83 is larger than that of the first cavity 82. The airflow direction is from the air inlet pipe 95 to the first cavity 82. When traction begins, the airflow enters the first cavity 82 through the detection pipe 9, pushing the tension rod 81 to compress the space of the second cavity 83 and compressing the reset spring 84 at the same time. When spasm occurs, the patient's limb suddenly retracts, and the tension rod 81 is quickly reset through the traction bow 6 and the traction rope 7, compressing the air in the first cavity 82.

[0019] like Figures 1-2 and Figures 5-6 As shown, an airbag pad 21 is fixedly connected to the adjusting bracket 2, and a supporting airbag pad 31 is fixedly connected to the supporting support 3. The airbag pad 21 and the supporting airbag pad 31 are connected to an external constant pressure air source through an air tube.

[0020] like Figures 1-2 and Figure 5 As shown, the adjusting bracket 2 is hinged to a first electric telescopic rod 32 and a second electric telescopic rod 41 on both sides. The telescopic rod of the first electric telescopic rod 32 is hinged to the support bracket 3, and the telescopic rod of the second electric telescopic rod 41 is hinged to the suspension frame 4.

[0021] The specific working process of this embodiment is as follows: Place the device in a suitable position, connect the air inlet pipe 95 to the external constant pressure air source, connect the airbag pad 21 and the supporting airbag pad 31 to the external constant pressure air source, after determining the traction site, perform routine disinfection and draping, and under local anesthesia, make a small incision in the skin with a sharp blade, insert the Kirschner wire into the bone and exit from the opposite side, place the ankle in the traction bow 6, install and lock the traction bow and the Kirschner wire, place the lower leg on the airbag pad 21, and place the thigh on the supporting airbag pad 31. Then, the first electric telescopic rod 32 drives the supporting support 3 to swing on the adjusting bracket 2. When the supporting support 3 contacts the placed plane, the first electric telescopic rod 32 stops, and the second electric telescopic rod 41 drives the suspension frame 4 to swing on the adjusting bracket 2. When adjusted to a suitable position, the second electric telescopic rod 41 stops. When traction is required, an external constant pressure air source continuously supplies air to the detection tube 9 through the air inlet pipe 95, pushing the moving plate 92 away from the guide ring 91 and stretching the detection spring 93. When the moving plate 92 disengages from the guide ring 91, the gas enters the first cavity 82 through the gap between the moving plate 92 and the guide ring 91, pushing the sealing plate 86 and the tension rod 81 to move. As the tension rod 81 gradually retracts into the traction sleeve 8, the volume of the first cavity 82 continuously increases, compressing the volume of the second cavity 83, and simultaneously compressing the return spring 84. The tension rod 81 drives the traction rope 7 to move on the suspension frame 4 and the support frame 5. When the traction rope 7 moves, it drives the traction bow 6 to pull the patient's leg. The tension rod 81 continues to retract into the traction sleeve 8. When the fracture ends are separated to the anatomical limit, the limb generates rigid resistance, preventing the tension rod 81 from continuing to retract into the traction sleeve 8. The tension rod 81 stops moving. At this time, the traction is in place, and the volume of the first cavity 82 no longer changes. Its internal pressure and external air source pressure gradually tend to be balanced. The air pressure on both sides of the moving plate 92 gradually tends to be balanced. Under the reset action of the detection spring 93, the moving plate 92 returns to the initial position and re-seales with the inner circumferential wall of the guide ring 91. When a patient experiences a spasm, the muscles contract instantly and the limbs retract rapidly. The limbs drive the traction bow 6, traction rope 7, and tension rod 81 to quickly return to their original position. The air in the first chamber 82 is compressed and input into the detection tube 9. Because the one-way valve between the air inlet pipe 95 and the detection tube 9 automatically closes, it blocks the external constant pressure air source from continuing to enter the detection tube, and at the same time prevents the backflow gas from depressurizing from the air inlet pipe. The air pressure of the compressed air is greater than the air pressure of the external constant pressure air source, pushing the moving plate 92 closer to the detection switch 94, compressing the detection spring 93. After the moving plate 92 touches the detection switch 94, the detection switch 94 sends a signal, cuts off the external constant pressure air source, and starts the buzzer as a warning.

[0022] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A traction and reduction device for bone setting surgery, comprising a lower support (1), wherein an adjusting support (2) is slidably adjusted on the lower support (1), characterized in that: The adjustment bracket (2) is hinged to a support bracket (3) and a suspension bracket (4) at both ends respectively. A support frame (5) is fixedly connected to the adjustment bracket (2). A traction rope (7) is sleeved on the support frame (5) and the suspension bracket (4) through a guide wheel. A traction bow (6) is fixedly connected to one end of the traction rope (7). The traction bow (6) is connected to the patient's bones through Kirschner wires. A traction sleeve (8) is hinged to one end of the lower bracket (1) on the same side as the suspension bracket (4). A detection tube (9) is fixedly connected to the traction sleeve (8). The detection tube (9) is connected to an external constant pressure air source through a pipeline. The hollow part of the detection tube (9) is connected to the hollow part of the traction sleeve (8) through an air pipe. The inner circumferential wall of the traction sleeve (8) is slidably connected to a tension rod (81), and the other end of the tension rod (81) is fixedly connected to the other end of the traction rope (7). The inner circumferential wall of the detection tube (9) is coaxially fixedly connected to a guide ring (91), and the inner circumferential wall of the guide ring (91) is slidably extended and connected to a moving plate (92). One side of the outer circumferential wall of the detection tube (9) is fixedly connected to an air inlet pipe (95), and the air inlet pipe (95) is connected to an external constant pressure air source.

2. The traction and reduction device for bone setting surgery according to claim 1, characterized in that: The inner circumferential wall of the detection tube (9) is fixedly connected to a detection switch (94). The detection switch (94) is located at the end of the guide ring (91) away from the initial position of the moving plate (92) and on the moving path of the moving plate (92). The detection switch (94) is electrically connected to an external constant pressure air source and a buzzer. The detection tube (9) is connected to an external constant pressure air source through an air inlet pipe (95). A one-way valve (951) is fixedly connected to the air inlet pipe (95). The conduction direction of the one-way valve (951) is from the air inlet pipe (95) to the detection tube (9). In the initial state, the moving plate (92) and the inner circumferential wall of the guide ring (91) are sealed together. When traction is required, the air pressure pushes the moving plate (92) to move. After the moving plate (92) and the guide ring (91) are disengaged, air enters the traction sleeve (8).

3. The traction and reduction device for bone setting surgery according to claim 2, characterized in that: When the moving plate (92) touches the detection switch (94), the external constant pressure air source stops entering, and at the same time the external buzzer starts to sound an alarm.

4. The traction and reduction device for bone setting surgery according to claim 3, characterized in that: One end of the tension rod (81) is provided with a sealing plate (86) that is coaxially fixed and slidably sealed to the inner wall of the tension sleeve (8). The sealing plate (86) divides the hollow part of the tension sleeve (8) into a first cavity (82) and a second cavity (83). The first cavity (82) is connected to the hollow part of the detection tube (9) through an air pipe. In the initial state, the volume of the second cavity (83) is larger than the volume of the first cavity (82), and the airflow direction is from the air inlet pipe (95) to the first cavity (82).

5. The traction and reduction device for bone setting surgery according to claim 4, characterized in that: When traction begins, the airflow enters the first cavity (82) through the detection tube (9), pushing the tension rod (81) to compress the space of the second cavity (83). When spasm occurs, the patient's limb suddenly retracts, and the tension rod (81) is quickly reset by the traction bow (6) and traction rope (7), compressing the air in the first cavity (82).

6. The traction and reduction device for bone setting surgery according to claim 1, characterized in that: An airbag pad (21) is fixedly connected to the adjusting bracket (2), and a supporting airbag pad (31) is fixedly connected to the receiving support (3). The airbag pad (21) and the supporting airbag pad (31) are connected to an external constant pressure air source through an air tube.

7. The traction and reduction device for bone setting surgery according to claim 1, characterized in that: The adjusting bracket (2) has a first electric telescopic rod (32) and a second electric telescopic rod (41) hinged on both sides. The telescopic rod of the first electric telescopic rod (32) is hinged to the support bracket (3), and the telescopic rod of the second electric telescopic rod (41) is hinged to the suspension frame (4).

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