A traction device for postoperative rehabilitation of orthopedics

Abstract

The application discloses a traction device for orthopedic postoperative rehabilitation and belongs to the field of medical instruments, which comprises a support, the support comprises a bottom plate one, the bottom plate one is provided with a tension stabilizing mechanism at the bottom, the top of the bottom plate one is hingedly provided with a pad plate, and the inclination angle of the pad plate is adjustable. The traction force is nearly constant by utilizing the volume difference between the pressure chamber and the thin tube, there is no counterweight inertia pulling and collision risk in daily activities, the handle adjusting force value is continuously adjustable, the support feet and the pad plate inclination angle can be freely adapted, the structure is compact, safe and comfortable, and the problem that there is a lack of orthopedic postoperative traction equipment providing constant traction force in the current market is solved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically referring to a traction device for postoperative rehabilitation in orthopedics. Background Technology

[0002] After orthopedic surgery (especially after internal fixation of limb fractures or joint release surgery), continuous traction is often required to maintain joint space, prevent muscle contracture, or protect and repair tissues. Currently, the traction devices widely used in clinical practice are mostly weighted or counterweighted types, which convert gravity into traction force on the limb through pulley systems and traction ropes.

[0003] This type of counterweight traction has significant drawbacks: First, when patients turn over in bed, move their affected limbs, or are cared for by family members, the suspended counterweights may collide with external factors such as passersby, posing safety hazards such as pulling on the injured area and sudden increases in traction force. Second, patients may move the limbs that are being tractioned daily, and the flexion and extension of the limbs will directly pull the counterweights up and down via the traction rope. This process must overcome the inertia of the counterweights, causing an abnormal increase or decrease in traction force momentarily. Not only is it impossible to maintain a constant traction force, but it also causes significant pulling discomfort and pain to the patient, affecting the speed of recovery. In addition, counterweight traction requires many and heavy weights, and the force value needs to be adjusted manually by adding or removing weights, which is inconvenient and lacks precision. Although some pneumatic or spring-type traction devices have emerged later, they are either complex in structure or have a significant decrease in force value with displacement, and have not fundamentally solved the problems of "constant force, no collision, and no inertia". Therefore, there is an urgent clinical need for a postoperative orthopedic traction device that can provide stable and constant traction force, is not affected by the patient's daily activities, and completely eliminates the risks associated with counterweights. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the present invention provides a traction device for postoperative rehabilitation in orthopedics, which effectively solves the problem of the lack of postoperative traction equipment in the market that can provide constant tension.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides a traction device for postoperative rehabilitation in orthopedics, including a bracket, the bracket including a base plate, the bottom of the base plate being provided with a tension stabilizing mechanism, and the top of the base plate being hinged with a pad, the tilt angle of the pad being adjustable.

[0006] Furthermore, a reserved groove is provided on the top of the base plate, and a second screw is rotatably installed in the reserved groove. An adjusting head is provided at the end of the second screw, which is located on the outside of the base plate. The side wall of the base plate is symmetrically provided with extension platforms. One of the extension platforms is provided with a sliding rod on its top, and the other extension platform is provided with a first screw rotatably installed on its top. An adjusting rod is slidably installed on the first screw and the sliding rod. One end of the adjusting rod is provided with a sliding hole, and the other end of the adjusting rod is provided with a screw hole. The sliding hole fits with the sliding rod, and the screw hole is threadedly engaged with the first screw. A second roller is also provided on one side wall of the base plate, and a first roller is provided on the side wall of the adjusting rod.

[0007] Furthermore, the pad includes a second base plate, an auxiliary groove is provided at the bottom of the second base plate, a hinge rod is hinged in the auxiliary groove, a threaded cylinder is hinged at the end of the hinge rod, the threaded cylinder is sleeved on the outside of the second screw and threadedly engaged with the second screw, and a soft pad is provided at the top of the second base plate.

[0008] Furthermore, the tension stabilizing mechanism includes a pressure chamber and a thin tube. The thin tube is located at the top of the pressure chamber. A piston 1 is slidably disposed within the pressure chamber, and a piston 2 is slidably disposed within the thin tube. A threaded cylinder 2 is rotatably disposed on one end wall of the pressure chamber. A screw 3 is disposed on one side wall of the piston. The screw 3 passes through the threaded cylinder 2 and engages with the threaded cylinder 2. A vent hole is opened on the side of the pressure chamber away from the threaded cylinder 2. An adjusting plug is disposed within the vent hole. The adjusting plug includes a rubber ring 1 and a rubber ring 2. The rubber ring 1 is disposed on the outside of the pressure chamber, and the rubber ring 2 is disposed on the inside of the pressure chamber. A perforated tube is disposed between the rubber ring 1 and the rubber ring 2. A pull buckle is disposed on the rubber ring 1. A handle is disposed on the threaded cylinder 2. The handle is disposed on the outside of the pressure chamber. Preferably, a limiting plate is disposed within the thin tube to limit the sliding area of ​​the piston 2.

[0009] Furthermore, a traction rope is connected to the piston two, the traction rope extends from the end of the thin tube, and a traction mechanism is provided at the end of the traction rope. The traction rope passes around roller one and roller two, and the traction mechanism includes a traction bow and a tension gauge, with the tension gauge located between the traction rope and the traction bow.

[0010] Rotating the handle allows adjustment of the position of piston one within the pressure chamber via the threaded engagement of threaded cylinder two and screw three, thereby regulating the negative pressure within the pressure chamber. The pulling force generated by the negative pressure adsorption is then transmitted to the traction rope and traction mechanism via piston two. Even if piston two shifts due to movement during the patient's daily life, the volume of the thin tube is much smaller than the sealed chamber. Therefore, the change in the sealed space between piston one and piston two is extremely small, resulting in minimal change in the negative pressure within the sealed space. This keeps the traction force on the patient relatively constant. Compared to traditional counterweight traction, the patient is not affected by the inertia of lifting and lowering counterweights during activity, resulting in less impact and discomfort. Furthermore, pulling the buckle allows for slow pressure release of the pressure chamber through the vent, precisely adjusting the traction force.

[0011] Furthermore, the base plate is provided with support legs at the four corners of its bottom, and support feet at the bottom of each support leg. The support feet are telescopically connected by a threaded connection. The height of the base plate can be adjusted by adjusting the extension length of each support foot. At the same time, medical staff can control the screw to rotate by rotating the adjustment head, thereby driving the threaded cylinder to move and adjusting the tilt angle of the pad. The pad can be flexibly adjusted according to the traction angle to fit the patient's limb, prevent the patient from feeling unsupported, and improve comfort.

[0012] The beneficial effects of this invention using the above structure are as follows: First, the traction force is nearly constant and unaffected by minor limb movements. This device utilizes the volume difference between the pressure chamber and the thin tube. When the patient's movement causes displacement of the piston, the volume change rate of the entire sealed space is extremely low because the volume of the thin tube is much smaller than that of the pressure chamber, and the internal negative pressure fluctuation is extremely small. This ensures that the tension acting on the traction rope remains approximately constant. At the same time, the traction force is directly generated by the air pressure difference, and there is no inertial mass of the counterweight. There is no need to overcome inertial forces during limb movement, and the traction force will not spike or be lost instantly. This avoids secondary strains or pain caused by inertia in traditional traction, and is especially safe for patients with weak muscle strength in the early postoperative period. This invention can provide patients with stable and continuous traction force, significantly improving comfort and rehabilitation effects.

[0013] Second, it completely eliminates the risk of counterweight collision and inertial discomfort. This invention does not require any suspended weights, thus preventing the counterweight from experiencing a surge in tension due to collisions. Patients are no longer bound by heavy weights, making the process safer.

[0014] Third, it is easy to adjust, and the height and angle can be flexibly adapted. The position of piston one can be adjusted by turning the handle through threaded cylinder two and screw three. With the slow pressure release of the adjusting plug, the required traction force can be accurately set. The operation is simple and the force value is continuously adjustable. The support foot at the bottom of the base plate one can change the overall height of the device through threaded extension and retraction. Rotating the adjusting head can adjust the inclination angle of the pad through the linkage of screw two and threaded cylinder one, so that the pad always fits the limb and prevents it from being suspended, further improving the patient's tolerance to long-term traction. The overall structure is compact and there are no external weights, which is conducive to ward management and patient activities. Attached Figure Description

[0015] Figure 1 This invention provides a schematic diagram of the structure of a traction device for postoperative rehabilitation in orthopedics. Figure 2 This is a schematic diagram of the structure of a traction device for postoperative rehabilitation in orthopedics after removing the traction rope and traction mechanism, provided by the present invention. Figure 3 This is a schematic diagram of the structure of the bracket provided by the present invention after removing the pad; Figure 4 This is a schematic diagram of the structure of the adjusting rod provided by the present invention; Figure 5 This is a schematic diagram of the structure of the pad provided by the present invention; Figure 6 A schematic diagram of the tensile stabilizing mechanism provided by the present invention; Figure 7 A cross-sectional view of the tension stabilizing mechanism provided by the present invention; Figure 8 This is a schematic diagram of the structure of the regulating plug provided by the present invention.

[0016] The components include: 1. Bracket; 2. Traction mechanism; 3. Pad; 4. Tension stabilizing mechanism; 5. Traction rope; 101. Base plate one; 102. Support leg; 103. Support foot; 104. Extension platform; 105. Slide rod; 106. Screw one; 107. Adjusting rod; 108. Sliding hole; 109. Screw hole; 110. Roller one; 111. Roller two; 112. Reserved slot; 113. Screw two; 114. Adjusting head; 201. Traction bow; 202. 301. Tensile gauge, 302. Base plate 2, 303. Soft pad, 304. Auxiliary groove, 305. Hinge rod, 306. Threaded cylinder 1, 407. Pressure chamber, 408. Thin tube, 409. Limiting plate, 4000. Threaded cylinder 2, 4001. Handle, 401. Screw 3, 402. Piston 1, 403. Piston 2, 404. Vent hole, 415. Adjusting plug, 416. Rubber ring 1, 417. Rubber ring 2, 418. Hollow tube, 419. Pull buckle.

[0017] 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

[0018] 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.

[0019] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0020] like Figures 1-8 As shown, the present invention provides a traction device for postoperative rehabilitation in orthopedics, including a support 1. The support 1 includes a base plate 101. The bottom of the base plate 101 is provided with a tension stabilizing mechanism 4. The top of the base plate 101 is hinged with a pad 3. The tilt angle of the pad 3 is adjustable.

[0021] A pre-reserved groove 112 is provided on the top of the base plate 101. A screw 113 is rotatably installed in the pre-reserved groove 112. An adjusting head 114 is provided at the end of the screw 113. The adjusting head 114 is located on the outside of the base plate 101. An extension platform 104 is symmetrically provided on the side wall of the base plate. A sliding rod 105 is provided on the top of one extension platform 104. A screw 106 is rotatably installed on the top of the other extension platform 104. An adjusting rod 107 is slidably installed on the screw 106 and the sliding rod 105. A sliding hole 108 is provided at one end of the adjusting rod 107. A screw hole 109 is provided at the other end of the adjusting rod 107. The sliding hole 108 fits with the sliding rod 105. The screw hole 109 is threadedly engaged with the screw 106. A roller 111 is also provided on the side wall of the base plate 101. A roller 110 is provided on the side wall of the adjusting rod 107.

[0022] The pad 3 includes a second base plate 301. The bottom of the second base plate 301 is provided with an auxiliary groove 303. A hinge rod 304 is hinged in the auxiliary groove 303. A threaded cylinder 305 is hinged at the end of the hinge rod 304. The threaded cylinder 305 is sleeved on the outside of the second screw 113 and is threadedly engaged with the second screw 113. A soft pad 302 is provided on the top of the second base plate 301.

[0023] The tension stabilizing mechanism 4 includes a pressure chamber 401 and a thin tube 402. The thin tube 402 is located at the top of the pressure chamber 401. A piston 407 is slidably mounted inside the pressure chamber 401, and a piston 408 is slidably mounted inside the thin tube 402. A threaded cylinder 404 is rotatably mounted on one end of the pressure chamber 401. A screw 406 is mounted on the side wall of the piston 407. The screw 406 passes through the threaded cylinder 404 and engages with its threads. A vent hole 409 is provided on the side of the pressure chamber 401 away from the threaded cylinder 404 for venting. An adjusting plug 410 is provided inside the hole 409. The adjusting plug 410 includes a rubber ring 411 and a rubber ring 412. The rubber ring 411 is located on the outside of the pressure chamber 401, and the rubber ring 412 is located on the inside of the pressure chamber 401. A hollow tube 413 is provided between the rubber ring 411 and the rubber ring 412. A pull buckle 414 is provided on the rubber ring 411. A handle 405 is provided on the threaded cylinder 404. The handle 405 is located on the outside of the pressure chamber 401. Preferably, a limiting plate 403 is provided inside the thin tube 402 to limit the sliding area of ​​the piston 408.

[0024] A traction rope 5 is connected to the piston 2 408. The traction rope 5 extends from the end of the thin tube 402. A traction mechanism 2 is provided at the end of the traction rope 5. The traction rope 5 passes around the roller 1 110 and the roller 2 111. The traction mechanism 2 includes a traction bow 201 and a tension gauge 202. The tension gauge 202 is located between the traction rope 5 and the traction bow 201.

[0025] Rotating handle 405 allows adjustment of the position of piston 407 within pressure chamber 401 via the threaded engagement of threaded cylinder 404 and screw 406, thereby regulating the negative pressure within pressure chamber 401. The pulling force generated by the negative pressure adsorption is then transmitted to traction rope 5 and traction mechanism 2 via piston 408. Even if piston 408 shifts due to movement during daily life, the volume of the thin tube 402 is much smaller than the sealed chamber. Therefore, the change in the sealed space between piston 407 and piston 408 is extremely small, resulting in minimal change in negative pressure within the sealed space. This ensures a constant traction force on the patient. Compared to traditional counterweight traction, the patient is not affected by the inertia of lifting and lowering counterweights during activity, minimizing the impact and discomfort. Furthermore, pulling buckle 414 allows for slow depressurization of pressure chamber 401 through vent hole 409, precisely adjusting the traction force.

[0026] The base plate 101 is equipped with support legs 102 at the four corners of its bottom, and support feet 103 at the bottom of each support leg 102. The support feet 103 are telescopically connected by a threaded connection. The height of the base plate 101 can be adjusted by adjusting the extension length of each support foot 103. At the same time, medical staff can rotate the adjusting head 114 to control the screw 113 to rotate, which drives the threaded cylinder 305 to move and adjust the tilt angle of the pad 3. The pad 3 can be flexibly adjusted according to the traction angle to fit the patient's limb, prevent the patient from feeling unsupported, and improve comfort.

[0027] In practical use, first, depending on the patient's condition, rotate the support foot 103 to adjust the support height of the base plate 101, and rotate the adjustment head 114 to adjust the tilt angle of the pad 3 to better fit the patient's limb. Then, ensure that the vent 409 is closed, rotate the handle 405 to generate initial negative pressure in the pressure chamber 401, causing the piston 408 to adhere to the limiting plate 403 at the starting end of the thin tube 402. Then, control the traction rope 5 to pass around the roller 110 and roller 211, and install the traction bow 201 on the patient's traction point through surgical operation. Then, according to the guidance of medical staff, rotate the handle 405 to adjust the magnitude of the traction force. The magnitude of the traction force is directly fed back to the tension gauge 202. It can be slightly increased at the beginning. The tension is applied so that piston 2 408 fits against the limiting plate 403 at the beginning of the thin tube 402. When the expected tension is reached, the adjusting plug 410 is pulled open, and the tension is finely adjusted by slowly releasing pressure, so that piston 2 408 is located in the middle of the thin tube 402, leaving room for the patient to move, thus completing the traction. During the rehabilitation process, pay attention to the position of the tension gauge 202 and piston 2 408 to avoid air leakage that reduces the traction force or air leakage that completely loses the traction force. If there is only a slight air leakage, the handle 405 can be turned to supplement the negative pressure. The screw 3 406 has sufficient reserved length to handle this situation. If there is a complete air leakage, the vent hole 409 can be opened, the handle 405 can be turned in the opposite direction to push piston 1 407, and then the vent hole 409 can be closed and the operation can be repeated.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] 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 device for postoperative rehabilitation in orthopedic surgery, characterized in that: The system includes a support (1), which includes a base plate (101). The base plate (101) has a tension stabilizing mechanism (4) at its bottom and a pad (3) hinged to its top. The pad (3) has an adjustable tilt angle. The tension stabilizing mechanism (4) includes a pressure chamber (401) and a thin tube (402). The thin tube (402) is located at the top of the pressure chamber (401). A piston (407) is slidably disposed inside the pressure chamber (401). A piston (408) is slidably disposed inside the thin tube (402). A traction rope (5) is connected to the piston (408). The traction rope (5) extends from the end of the thin tube (402). A traction mechanism (2) is provided at the end of the traction rope (5).

2. The traction device for postoperative rehabilitation in orthopedics according to claim 1, characterized in that: A threaded cylinder two (404) is rotatably provided on one end of the pressure chamber (401). A screw three (406) is provided on the side wall of the piston one (407). The screw three (406) passes through the threaded cylinder two (404) and engages with the threaded cylinder two (404). A vent hole (409) is provided on the side of the pressure chamber (401) away from the threaded cylinder two (404). An adjusting plug (410) is provided in the vent hole (409).

3. The traction device for postoperative rehabilitation in orthopedics according to claim 2, characterized in that: The top of the base plate (101) is provided with a reserved groove (112), and a screw rod (113) is rotatably provided in the reserved groove (112). The pad (3) includes a base plate (301), and an auxiliary groove (303) is provided at the bottom of the base plate (301). A hinge rod (304) is hinged in the auxiliary groove (303), and a threaded cylinder (305) is hinged at the end of the hinge rod (304). The threaded cylinder (305) is sleeved on the outside of the screw rod (113) and threadedly engaged with the screw rod (113).

4. A traction device for postoperative rehabilitation in orthopedics according to claim 3, characterized in that: The base plate is symmetrically provided with extension platforms (104) on its sidewalls. One of the extension platforms (104) is provided with a slide rod (105) on its top, and the other extension platform (104) is provided with a screw rod (106) on its top. An adjusting rod (107) is slidably provided on the screw rod (106) and the slide rod (105). One end of the adjusting rod (107) is provided with a sliding hole (108), and the other end of the adjusting rod (107) is provided with a screw hole (109). The sliding hole (108) fits into the slide rod (105), and the screw hole (109) is threaded into the screw rod (106).

5. A traction device for postoperative rehabilitation in orthopedics according to claim 4, characterized in that: The side wall of the base plate (101) is also provided with roller 2 (111), the side wall of the adjusting rod (107) is provided with roller 1 (110), and the traction rope (5) passes around roller 1 (110) and roller 2 (111).

6. A traction device for postoperative rehabilitation in orthopedics according to claim 5, characterized in that: The traction mechanism (2) includes a traction bow (201) and a tension gauge (202), wherein the tension gauge (202) is located between the traction rope (5) and the traction bow (201).

7. A traction device for postoperative rehabilitation in orthopedics according to claim 6, characterized in that: The adjusting plug (410) includes a first rubber ring (411) and a second rubber ring (412). The first rubber ring (411) is located on the outside of the pressure chamber (401), and the second rubber ring (412) is located on the inside of the pressure chamber (401). A hollow tube (413) is provided between the first rubber ring (411) and the second rubber ring (412). A pull buckle (414) is provided on the first rubber ring (411).

8. A traction device for postoperative rehabilitation in orthopedics according to claim 7, characterized in that: The bottom plate 2 (301) is provided with a soft pad (302) on top, and the end of the screw 2 (113) is provided with an adjustment head (114), which is located on the outside of the bottom plate 1 (101).

9. A traction device for postoperative rehabilitation in orthopedics according to claim 8, characterized in that: The bottom of the base plate (101) is provided with support legs (102) at the four corners of the bottom, and the bottom of the support legs (102) is provided with support feet (103). The support feet (103) are telescopically connected by threaded connection.

10. A traction device for postoperative rehabilitation in orthopedics according to claim 9, characterized in that: The threaded cylinder (404) is provided with a handle (405), which is located on the outside of the pressure chamber (401).

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