A rapid traction mechanism for orthopedics

Abstract

The invention relates to an orthopedic traction mechanism, belonging to the technical field of medical devices. The invention solves the problem that the traction process in existing orthopedic surgery is long, resulting in prolonged operation time. The invention comprises a rotation adjustment mechanism, a length adjustment mechanism, a pitch adjustment mechanism and a supporting square tube. The rotation adjustment mechanism is connected to the length adjustment mechanism, the length adjustment mechanism is connected to the pitch adjustment mechanism, and the pitch adjustment mechanism is connected to the supporting square tube. The invention realizes preliminary rapid adjustment, saves traction time, improves operation efficiency, reduces patient pain, and is simple and convenient to operate.

Description

Technical Field

[0001] The invention relates to an orthopedic traction mechanism, belonging to the technical field of medical devices. Background Art

[0002] In orthopedic surgery, after successful anesthesia, the patient usually lies on the bed in a supine or lateral position. In leg fracture surgery, reduction is a very difficult step, but also a very important step, which often requires the help of humans and the assistance of other medical devices for traction reduction and correction operations.

[0003] The existing orthopedic traction frame needs to be operated by hand to adjust the traction distance. Each adjustment is a micro-adjustment. It takes about four turns to adjust a distance of one centimeter, which causes the traction process to take too much time, thereby prolonging the operation time.

[0004] Based on the above problems, it is urgent to propose an orthopedic rapid traction mechanism to solve the above technical problems. Summary of the invention

[0005] The present invention provides an orthopedic rapid traction mechanism, which is developed to solve the problem that the traction process in existing orthopedic surgery is long, resulting in prolonged operation time. A brief overview of the present invention is given below to provide a basic understanding of certain aspects of the present invention. It should be understood that this overview is not an exhaustive overview of the present invention. It is not intended to identify the key or important parts of the present invention, nor is it intended to limit the scope of the present invention.

[0006] The technical solution of the present invention:

[0007] An orthopedic rapid traction mechanism comprises a rotation adjustment mechanism, a length adjustment mechanism, a pitch adjustment mechanism and a supporting square tube. The rotation adjustment mechanism is connected to the length adjustment mechanism, the length adjustment mechanism is connected to the pitch adjustment mechanism, and the pitch adjustment mechanism is connected to the supporting square tube.

[0008] Preferably: the rotation adjustment mechanism includes a first connecting piece, a mounting connection seat, a first handle, a traction shoe and a shoe cover, one end of the mounting connection seat is connected to the traction shoe, the other end of the mounting connection seat is connected to the first connecting piece, the first handle is threadedly connected to the rotation adjustment mechanism, and the traction shoe is provided with a shoe cover.

[0009] Preferably: the length adjustment mechanism includes an outer sleeve, a telescopic rod, a first bushing, a trapezoidal threaded screw, a connecting sleeve, a second bushing, a handwheel, a second handle and a nut, the two ends of the outer sleeve are fixedly connected to the first bushing and the second bushing respectively, the outer sleeve is sleeved on the outside of the telescopic rod, the outer sleeve is slidably connected to the telescopic rod through the first bushing, the protruding end of the telescopic rod is connected with the connecting sleeve, the second handle passes through the first connecting piece and the connecting sleeve and connects the first connecting piece to the connecting sleeve, the other end of the telescopic rod is connected to the nut, the trapezoidal threaded screw is connected to the outer sleeve through the first bushing, the trapezoidal threaded screw is threadedly connected to the nut, and the right end of the trapezoidal threaded screw is connected to the handwheel.

[0010] Preferably: a deep groove ball bearing and a thrust bearing are installed on the second bushing, the trapezoidal thread lead screw is rotatably connected to the second bushing via the deep groove ball bearing, the handwheel is connected to the trapezoidal thread lead screw via a flat key, the right end of the trapezoidal thread lead screw is threadedly connected to the cap nut, the cap nut presses the handwheel between the thrust bearing and the cap nut, the handwheel is rotatably connected to the second bushing via the thrust bearing, the connecting sleeve is connected to the telescopic rod via a hexagonal flat-end set screw, the first bushing and the second bushing are connected to the outer sleeve via a hexagonal cylindrical head screw, and the lower side of the outer sleeve has a serrated structure.

[0011] Preferably: the pitch adjustment mechanism includes a slide groove connecting piece, a control pin, a handle, a compression spring, an expansion pin, a third bushing, an adjustable handle, a cylindrical helical compression spring, a locking shaft, a second connecting piece and a connecting rod, the slide groove connecting piece is sleeved on the outside of the outer sleeve, the outer sleeve is provided with a small cylindrical slideway, the control pin is located in the small cylindrical slideway, the control pin is provided with a through slide groove, the expansion pin passes through the through slide groove, the expansion pin is located in the small cylindrical slideway and is fixedly connected to the small cylindrical slideway, the control pin is sleeved with a compression spring, the two ends of the compression spring are respectively connected to the upper end of the control pin and the expansion pin, and the control pin is connected to the handle;

[0012] The slide groove connecting piece is connected to the upper end of the connecting rod, and the lower end of the connecting rod has a stepped through hole. The third bushing is connected to the connecting rod and is installed coaxially with the stepped through hole. The two ends of the cylindrical helical compression spring are fixedly connected to the third bushing and the connecting rod. The locking shaft passes through the third bushing, the cylindrical helical compression spring and the stepped through hole in sequence and is fixedly connected to the second connecting piece. The right end of the locking shaft has a thread, and the adjustable handle is threadedly connected to the locking shaft through the thread.

[0013] Preferably: the lower end of the second connecting member has a sleeve, and the second connecting member is connected to the supporting square tube through the sleeve.

[0014] Preferably, a third handle is threadedly connected to the side surface of the sleeve of the second connecting member, and the third handle fixes the second connecting member to the supporting square tube.

[0015] Preferably, a long limit groove is processed on the telescopic rod, and the first bushing has a limit slider, which is arranged in the long limit groove and is slidably connected to the telescopic rod through the long limit groove.

[0016] The present invention has the following beneficial effects:

[0017] 1. Rotate the first handle to tighten the first connecting piece, so that the length adjustment mechanism is fixed to the rotation adjustment mechanism. Rotate the hand wheel, which can control the movement of the nut along the direction of the trapezoidal thread screw, thereby controlling the extension and retraction of the telescopic rod, thereby achieving fine adjustment of the traction position and ensuring the accuracy of the traction position;

[0018] 2. The compression spring makes the control pin press the outer sleeve tightly. Pull the control pin downward. The control pin is limited in displacement under the limiting action of the rising pin to prevent the control pin from being separated from the slide connector. The compression spring is compressed, and the control pin is separated from the outer sleeve. Pull the hand wheel, and the hand wheel moves the length adjustment mechanism and the rotation adjustment mechanism to achieve preliminary rapid adjustment, saving traction time, improving surgical efficiency, and reducing patient pain. When the handle is released, the control pin is automatically pressed against the outer sleeve, and the operation is simple and convenient;

[0019] 3. Rotate the adjustable handle to change the connection length between the locking shaft and the adjustable handle, thereby reducing the clamping force of the connecting rod and the second connecting piece. Rotate the connecting rod, and the connecting rod drives the length adjustment mechanism through the slide connector to achieve angle adjustment. After the adjustment is completed, release the adjustable handle, and the connecting rod and the second connecting piece will be automatically compressed and fixed under the action of the cylindrical spiral compression spring. Customized adjustments can be made according to the physical condition and illness of different patients to achieve better results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view of an orthopedic rapid traction mechanism;

[0021] Figure 2 It is a top view of an orthopedic rapid traction mechanism;

[0022] Figure 3 yes Figure 1 Sectional view at A in the middle;

[0023] In the figure, 40-rotation adjustment mechanism, 7-first handle, 8-traction shoe, 9-shoe cover, 10-first connecting piece, 31-installation connecting seat, 50-length adjustment mechanism, 1-outer sleeve, 2-telescopic rod, 3-first bushing, 4-trapezoidal thread screw, 5-connecting sleeve, 11-hexagon socket head screw, 13-second bushing, 14-flat key, 15-cap nut, 16-deep groove ball bearing, 17-thrust bearing, 18-handwheel, 32-second handle, 33-nut, 60-pitch adjustment mechanism, 12-slide connector, 19-control pin, 20-handle, 21-compression spring, 22-rising pin, 23-third bushing, 24-adjustable handle, 25-cylindrical spiral compression spring, 26-locking shaft, 27-second connecting piece, 34-connecting rod, 28-support square tube, 35-third handle. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is described below by the specific embodiments shown in the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0025] The connection mentioned in the present invention is divided into fixed connection and detachable connection. The fixed connection (i.e., non-detachable connection) includes but is not limited to conventional fixed connection methods such as folding connection, rivet connection, bonding connection and welding connection. The detachable connection includes but is not limited to conventional detachable methods such as threaded connection, snap connection, pin connection and hinge connection. When the specific connection method is not clearly defined, it is assumed that at least one connection method can always be found in the existing connection methods to achieve the function. Those skilled in the art can choose according to their needs. For example: welding connection is selected for fixed connection, and hinge connection is selected for detachable connection.

[0026] Specific implementation method 1: Combination Figure 1-Figure 3 The present embodiment is described. An orthopedic rapid traction mechanism of the present embodiment includes a rotation adjustment mechanism 40, a length adjustment mechanism 50, a pitch adjustment mechanism 60 and a supporting square tube 28. The rotation adjustment mechanism 40 is connected to the length adjustment mechanism 50, the length adjustment mechanism 50 is connected to the pitch adjustment mechanism 60, the pitch adjustment mechanism 60 is connected to the supporting square tube 28, and the supporting square tube 28 is fixedly connected to other fixing devices such as an operating bed.

[0027] Specific implementation method 2: Combination Figure 1-Figure 2The present embodiment is described. The present embodiment is an orthopedic quick traction mechanism. The rotation adjustment mechanism 40 includes a first connecting member 10, a mounting connection seat 31, a first handle 7, a traction shoe 8 and a shoe cover 9. One end of the mounting connection seat 31 is connected to the traction shoe 8, and the other end of the mounting connection seat 31 is connected to the first connecting member 10. The first handle 7 is threadedly connected to the rotation adjustment mechanism 40. The traction shoe 8 is provided with a shoe cover 9, and the foot is placed in the shoe cover 9 to achieve fixation.

[0028] Specific implementation method three: Combination Figure 1-Figure 2 The present embodiment is described. The present embodiment is an orthopedic quick traction mechanism. The length adjustment mechanism 50 includes an outer sleeve 1, a telescopic rod 2, a first bushing 3, a trapezoidal threaded screw rod 4, a connecting sleeve 5, a second bushing 13, a handwheel 18, a second handle 32 and a nut 33. The two ends of the outer sleeve 1 are fixedly connected to the first bushing 3 and the second bushing 13 respectively. The outer sleeve 1 is sleeved on the outside of the telescopic rod 2. The outer sleeve 1 is slidably connected to the telescopic rod 2 through the first bushing 3. The protruding end of the telescopic rod 2 is connected with the connecting sleeve 5. The second handle 32 passes through the first connecting piece 10 and the connecting sleeve 5 and connects the first connecting piece 10 with the connecting sleeve 5. The connecting sleeve 5 is fixedly connected, the other end of the telescopic rod 2 is connected to the nut 33, the trapezoidal threaded screw 4 is connected to the outer sleeve 1 through the first bushing 3, the trapezoidal threaded screw 4 is threadedly connected to the nut 33, and the right end of the trapezoidal threaded screw 4 is connected to the handwheel 18. The first handle 7 is rotated to make the first handle 7 tighten the first connecting member 10, so that the length adjustment mechanism 50 is fixed to the rotation adjustment mechanism 40, and the handwheel 18 is rotated. The handwheel 18 can control the movement of the nut 33 along the direction of the trapezoidal threaded screw 4, thereby controlling the extension and retraction of the telescopic rod 2, thereby achieving fine-tuning of the traction position and ensuring the accuracy of the traction position.

[0029] Specific implementation method four: Combination Figure 1 , Figure 2 Describe this embodiment, this embodiment is an orthopedic quick traction mechanism, the second bushing 13 is installed with a deep groove ball bearing 16 and a thrust bearing 17, the trapezoidal thread lead screw 4 is rotatably connected to the second bushing 13 through the deep groove ball bearing 16, the handwheel 18 is connected to the trapezoidal thread lead screw 4 through the flat key 14, the right end of the trapezoidal thread lead screw 4 is threadedly connected to the cap nut 15, the cap nut 15 presses the handwheel 18 between the thrust bearing 17 and the cap nut 15, the handwheel 18 is rotatably connected to the second bushing 13 through the thrust bearing 17, the connecting sleeve 5 is connected to the telescopic rod 2 through the hexagonal flat-end set screw 6, the first bushing 3 and the second bushing 13 are connected to the outer sleeve 1 through the hexagonal cylindrical head screw 11, and the lower side surface of the outer sleeve 1 has a serrated structure to prevent the outer sleeve 1 from sliding relative to the slide slot connector 12 during fine-tuning, thereby affecting the fine-tuning effect.

[0030] Specific implementation method five: Combination Figure 1-Figure 3Describe this embodiment, this embodiment is an orthopedic quick traction mechanism, the pitch adjustment mechanism 60 includes a slide groove connector 12, a control pin 19, a handle 20, a compression spring 21, an expansion pin 22, a third bushing 23, an adjustable handle 24, a cylindrical helical compression spring 25, a locking shaft 26, a second connector 27 and a connecting rod 34, the slide groove connector 12 is sleeved on the outside of the outer sleeve 1, the outer sleeve 1 has a small cylindrical slideway, the control pin 19 is located in the small cylindrical slideway, the control pin 19 has a through slideway, the expansion pin 22 passes through the through slideway, the expansion pin 22 is located in the small cylindrical slideway and is fixedly connected to the small cylindrical slideway, the control pin 19 is sleeved with a compression spring 21, the compression spring 21 The two ends are respectively connected with the upper end of the control pin 19 and the rising pin 22, and the compression spring 21 makes the control pin 19 press the outer sleeve 1. The control pin 19 is connected with the handle 20, and the control pin 19 is pulled downward. The control pin 19 is limited in displacement under the limiting action of the rising pin 22 to prevent the control pin 19 from being separated from the slide groove connector 12. The compression spring 21 is compressed, and the control pin 19 is separated from the outer sleeve 1. The hand wheel 18 is pulled, and the hand wheel 18 moves the length adjustment mechanism 50 and the rotation adjustment mechanism 40 to achieve preliminary rapid adjustment, save traction time, improve surgical efficiency, and reduce patient pain. When the handle 20 is released, the control pin 19 automatically presses the outer sleeve 1 to achieve the fixation of the pitch adjustment mechanism 60 and the length adjustment mechanism 50;

[0031] The slide connector 12 is connected to the upper end of the connecting rod 34, the lower end of the connecting rod 34 has a stepped through hole, the third bushing 23 is connected to the connecting rod 34 and is installed coaxially with the stepped through hole, the two ends of the cylindrical helical compression spring 25 are fixedly connected to the third bushing 23 and the connecting rod 34, the locking shaft 26 passes through the third bushing 23, the cylindrical helical compression spring 25 and the stepped through hole in sequence and is fixedly connected to the second connecting member 27, the right end of the locking shaft 26 has a thread, the adjustable handle 24 is fixedly connected to the third bushing 23, and the adjustable handle 24 is screwed with the locking shaft 26 through a thread The adjustable handle 24 is connected by a groove, and the connecting length of the locking shaft 26 and the adjustable handle 24 is rotated, thereby changing the connection length between the locking shaft 26 and the adjustable handle 24, so that the pressing force of the connecting rod 34 and the second connecting member 27 is reduced, and the connecting rod 34 is rotated. The connecting rod 34 drives the length adjustment mechanism 50 to move through the slide groove connecting member 12 to achieve angle adjustment. After the adjustment is completed, the adjustable handle 24 is released, and the connecting rod 34 and the second connecting member 27 are automatically pressed and fixed under the action of the cylindrical spiral compression spring 25. Customized adjustment is performed according to the physical condition and illness of different patients to achieve better results.

[0032] Specific implementation method six: Combination Figure 1 , Figure 3 The present embodiment is described as an orthopedic quick traction mechanism. The lower end of the second connecting member 27 has a sleeve, and the second connecting member 27 is connected to the supporting square tube 28 through the sleeve.

[0033] Specific implementation method seven: Combination Figure 1-Figure 3 To illustrate this embodiment, an orthopedic quick traction mechanism is provided in this embodiment. A third handle 35 is threadedly connected to the side surface of the sleeve of the second connecting member 27. The third handle 35 fixes the second connecting member 27 to the supporting square tube 28. The supporting square tube 28 can be separated from other parts of the device by rotating the third handle 35, which facilitates installation and disassembly.

[0034] Specific implementation method eight: Combination Figure 1-Figure 2 The present embodiment is described as an orthopedic rapid traction mechanism. A long limit groove is processed on the telescopic rod 2. The first bushing 3 has a limit slider. The limit slider is arranged in the long limit groove and is slidably connected to the telescopic rod 2 through the long limit groove to prevent the nut 33 and the telescopic rod 2 from deflecting during movement, thereby preventing the patient's foot from being subjected to a twisting force, ensuring the accuracy of the traction correction position, and reducing the patient's pain during the traction process.

[0035] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined, and those skilled in the art can exhaust all possibilities based on the mathematical knowledge of arrangement and combination. Therefore, the present invention will no longer describe the technical solutions after arrangement and combination one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present invention.

[0036] This implementation is only an exemplary description of this patent and does not limit its protection scope. Those skilled in the art may also make partial changes to it, as long as they do not exceed the spirit of this patent, they are all within the protection scope of this patent.

Claims

1. An orthopedic rapid traction mechanism, characterized in that: The invention comprises a rotation adjustment mechanism (40), a length adjustment mechanism (50), a pitch adjustment mechanism (60) and a supporting square tube (28); the rotation adjustment mechanism (40) is connected to the length adjustment mechanism (50), the length adjustment mechanism (50) is connected to the pitch adjustment mechanism (60), and the pitch adjustment mechanism (60) is connected to the supporting square tube (28); The length adjustment mechanism (50) comprises an outer sleeve (1), a telescopic rod (2), a first bushing (3), a trapezoidal threaded screw (4), a connecting sleeve (5), a second bushing (13), a hand wheel (18), a second handle (32) and a nut (33); the two ends of the outer sleeve (1) are respectively fixedly connected to the first bushing (3) and the second bushing (13); the outer sleeve (1) is sleeved on the outside of the telescopic rod (2); the outer sleeve (1) is slidably connected to the telescopic rod (2) through the first bushing (3). The extended end of the telescopic rod (2) is connected with a connecting sleeve (5), the second handle (32) passes through the first connecting piece (10) and the connecting sleeve (5) and connects the first connecting piece (10) and the connecting sleeve (5), the other end of the telescopic rod (2) is connected with a nut (33), the trapezoidal threaded screw rod (4) is connected with the outer sleeve (1) through the first bushing (3), the trapezoidal threaded screw rod (4) is threadedly connected with the nut (33), and the right end of the trapezoidal threaded screw rod (4) is connected with a hand wheel (18); The pitch adjustment mechanism (60) comprises a slide groove connector (12), a control pin (19), a handle (20), a compression spring (21), an expansion pin (22), a third bushing (23), an adjustable handle (24), a cylindrical helical compression spring (25), a locking shaft (26), a second connector (27) and a connecting rod (34); the slide groove connector (12) is sleeved on the outer side of the outer sleeve (1); the outer sleeve (1) has a small cylindrical slideway; the control pin (19) is located in the small cylindrical slideway; the control pin (19) has a through slide groove; the expansion pin (22) passes through the through slide groove; the expansion pin (22) is located in the small cylindrical slideway and is fixedly connected to the small cylindrical slideway; the control pin (19) is sleeved with a compression spring (21); the two ends of the compression spring (21) are respectively connected to the upper end of the control pin (19) and the expansion pin (22); the control pin (19) is connected to the handle (20); The slide groove connecting member (12) is connected to the upper end of the connecting rod (34), the lower end of the connecting rod (34) has a stepped through hole, the third bushing (23) is connected to the connecting rod (34) and is installed coaxially with the stepped through hole, the two ends of the cylindrical helical compression spring (25) are fixedly connected to the third bushing (23) and the connecting rod (34), the locking shaft (26) passes through the third bushing (23), the cylindrical helical compression spring (25) and the stepped through hole in sequence and is fixedly connected to the second connecting member (27), the right end of the locking shaft (26) has a thread, and the adjustable handle (24) is threadedly connected to the locking shaft (26) through the thread.

2. An orthopedic rapid traction mechanism according to claim 1, characterized in that: The second bushing (13) is provided with a deep groove ball bearing (16) and a thrust bearing (17); the trapezoidal threaded screw (4) is rotatably connected to the second bushing (13) via the deep groove ball bearing (16); the hand wheel (18) is connected to the trapezoidal threaded screw (4) via a flat key (14); the right end of the trapezoidal threaded screw (4) is threadedly connected to a cap nut (15); the cap nut (15) presses the hand wheel (18) between the thrust bearing (17) and the cap nut (15); the hand wheel (18) is rotatably connected to the second bushing (13) via the thrust bearing (17); the connecting sleeve (5) is connected to the telescopic rod (2) via a hexagon socket flat-end set screw (6); the first bushing (3) and the second bushing (13) are connected to the outer sleeve (1) via a hexagon socket cylindrical head screw (11); and the lower side surface of the outer sleeve (1) has a serrated structure.

3. The orthopedic rapid traction mechanism according to claim 1, characterized in that: The lower end of the second connecting member (27) is provided with a sleeve, and the second connecting member (27) is connected to the supporting square tube (28) via the sleeve.

4. The orthopedic rapid traction mechanism according to claim 3, characterized in that: A third handle (35) is threadedly connected to the side surface of the sleeve of the second connecting member (27), and the third handle (35) fixes the second connecting member (27) and the supporting square tube (28).

5. An orthopedic rapid traction mechanism according to claim 3 or 4, characterized in that: The telescopic rod (2) is processed with a long limit groove, and the first bushing (3) has a limit slider, which is arranged in the long limit groove and is slidably connected to the telescopic rod (2) through the long limit groove.

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