Acetabular fracture traction device

Abstract

The present invention discloses an acetabular fracture traction device, which replaces human traction in acetabular fracture surgery, stabilizes the force on the limbs, can maintain a constant pulling or pushing force, does not affect the pulling force of the retractor on the incision tissue, ensures that the separation space between the bone and the tissue remains unchanged, and enables the surgery to proceed smoothly. In addition, the device is easy to operate, and the traction rod can be driven to swing by only extending and retracting the drive rod to rotate the shaft body, thereby realizing the driving operation of abduction or adduction of the patient's limbs, and the shaft body can be locked without changing the locking length of the drive rod to ensure the stability of the limb state.

Description

Technical Field

[0001] The invention relates to the field of medical auxiliary equipment, and in particular to a traction device for acetabulum fracture. Background Art

[0002] During acetabular fracture surgery, the bones and external tissues need to be separated, and a retractor is used to pull and expand the surgical incision to both sides so that the hip joint area exposes a sufficient range of surgical fields. At the same time, to facilitate the operation, the assistant doctor is also required to pull the patient's affected lower limb to abduct or adduct it. However, since the operation lasts for several hours, this method increases the labor of the assistant doctor, which is prone to uneven thrust or pull due to fatigue, and it is difficult to maintain a constant angle. As long as the external force on the limb changes, the force on the retractor at the incision will change, and the separation space between the bone and the tissue will also change accordingly, which adds a certain degree of difficulty to the surgeon performing the operation and increases the time to complete the operation. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an acetabular fracture traction device which can pull the patient's lower limbs to abduct or adduct and maintain a stable traction state.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] An acetabular fracture traction device, characterized by comprising:

[0006] an upper base having a horizontal lower bottom surface;

[0007] A bearing seat, fixed on the upper base;

[0008] The shaft body is assembled on the bearing seat;

[0009] A traction rod is arranged vertically, the lower end of which is fixed to one end of the shaft body, and the traction rod has a telescopic portion capable of adjusting its height;

[0010] The connecting rod is in a right-angle structure, one end of which is fixed to the other end of the shaft body;

[0011] A driving rod is vertically arranged, with its lower end fixed to the upper base and its upper end hinged to the free end of the connecting rod. The driving rod can be extended and locked, and is used to drive the shaft body to rotate to realize the swing of the traction rod;

[0012] The fixing clamp is rotatably connected and locked with the top of the traction rod by means of a connecting seat, and the fixing clamp can embrace the femur of the patient.

[0013] A further technical solution is that the fixing clamp comprises:

[0014] The outer fixing ring includes an upper half ring and a lower half ring which can be opened and closed by means of hinges, and a locking portion is provided between the upper half ring and the lower half ring for locking the openings of the two;

[0015] The filling airbag is located in the outer fixing ring. The air nozzle of the filling airbag is detachably connected to the inflation tube. The filling airbag can embrace the patient's lower limbs after being inflated.

[0016] A further technical solution is that a circle of fixing grooves is provided on the inner wall of the outer fixing ring, and the filling airbag is in a strip-shaped structure and is located in the fixing grooves.

[0017] A further technical solution is that the locking portion includes locking plates fixed to the opening ends of the upper half circle and the lower half circle, and when the outer fixing ring is buckled, the two locking plates overlap and are locked by nuts after bolts are passed through.

[0018] A further technical solution is to further include:

[0019] A top plate, which can be located behind the tibia after the fixing clamp embraces the patient's femur, and the upper end of the top plate can be rotatably connected and locked with the lower end of the distal end of the fixing clamp by means of a rotating shaft assembly; and

[0020] The driving mechanism can drive the upper base to move toward the far end and lock it.

[0021] A further technical solution is that the shaft assembly comprises:

[0022] The rod body is tangentially fixed to the lower part of the distal end of the fixing clamp, and has first threaded columns at both ends with a diameter smaller than that of the rod body;

[0023] A ring portion is sleeved on the threaded column and fixed on both sides of the upper end of the top plate; and

[0024] The first lock nut is threadedly connected to the first threaded column and is used to lock the ring portion and the rod body.

[0025] A further technical solution is that the driving mechanism comprises:

[0026] The lower base is arranged below the upper base, and a mounting groove is provided on the lower base;

[0027] An adjusting screw rod is rotatably fixed in the mounting groove by means of a bearing, and a distal end of the adjusting screw rod extends out of the mounting groove to form a rotating handle; and

[0028] The adjusting block is threadedly connected to the adjusting screw and fixed to the upper base. The adjusting block can move along the adjusting screw as the adjusting screw rotates.

[0029] A further technical solution is that a suction cup capable of being adsorbed on the operating table is fixed to the bottom of the lower base.

[0030] The beneficial effects of adopting the above technical solution are:

[0031] The use of the acetabular fracture traction device replaces human traction, has stable force, can maintain constant pulling or pushing force, will not affect the pulling force of the retractor on the incision tissue, ensures that the separation space between bones and tissues remains unchanged, and enables the operation to proceed smoothly.

[0032] Moreover, the device is easy to operate. The traction rod can be driven to swing only by extending and retracting the driving rod to rotate the shaft body, thereby realizing the driving operation of abduction or adduction of the patient's limbs. The shaft body can be locked by keeping the locking length of the driving rod unchanged to ensure the stability of the limb state. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Figure 1 It is a schematic diagram of the structure of the present invention;

[0035] Figure 2 yes Figure 1 Schematic diagram of the right view structure. DETAILED DESCRIPTION

[0036] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] like Figure 1 and Figure 2 As shown, an embodiment of the disclosed acetabular fracture traction device is used to abduct or adduct the patient's affected limb in a bent-leg state during acetabular fracture surgery, so as to expose a sufficient surgical field range at the hip joint.

[0039] The acetabular fracture traction device includes an upper base 1, a bearing seat 2 fixed on the upper base 1, and an axle 3 assembled on the bearing seat 2. The upper base 1 has a horizontal lower bottom surface and also includes a traction rod 4, a connecting rod 5, a driving rod 6 and a fixing clamp 7.

[0040] The traction rod 4 is arranged vertically, and its lower end is fixed to the output end of the shaft body 3. The traction rod 4 has a telescopic portion 41 capable of adjusting its height. The connecting rod 5 is a right-angle structure, and one end of it is fixed to the inlet and outlet ends of the shaft body 3. The driving rod 6 is arranged vertically, and its lower end is fixed to the upper base 1, and its upper end is hinged to the free end of the connecting rod 5. The driving rod 6 can be telescopic and locked, and is used to drive the shaft body 3 to rotate to realize the swing of the traction rod 4. The fixing clamp 7 is rotatably connected and locked to the top of the traction rod 4 by means of the connecting seat 8, and can embrace the patient's femur.

[0041] The connecting seat 8 includes a U-shaped seat fixed to the middle of the fixing clamp 7 and the top of the traction rod 4 respectively, and a connecting block extending into the U-shaped seat. A connecting shaft is arranged between the connecting block and the U-shaped seat, and threads are arranged at both ends of the connecting shaft. After the fixing clamp 7 and the traction rod 4 are adjusted in angle, nuts are screwed and locked at both ends of the connecting shaft. The fixing clamp 7 can be adjusted in the range of 30° to 75° to adapt to the leg bending angle of different patients. The length of the fixing clamp 7 is 10 to 40 cm, so that the fixing clamp 7 can be fixed on the patient's thigh. In acetabular fracture surgery, the upper base 1 can be used to stably place the device as a whole on the bed and below the affected limb. Then adjust the height of the traction rod 4 so that the fixed clamp 7 can embrace the patient's lower limbs, and then control the driving rod 6 to extend or contract according to the surgical requirements. By changing the length of the driving rod 6, the connecting rod 5 can drive the shaft body 3 to rotate, and the rotation of the shaft body 3 can drive the traction rod 4 to swing, so that the fixed clamp 7 can rotate left or right 0 to 30°, thereby driving the limbs to be abducted and then adducted.

[0042] The use of the acetabular fracture traction device replaces human traction, has stable force, can maintain constant pulling or pushing force, will not affect the pulling force of the retractor on the incision tissue, ensures that the separation space between bones and tissues remains unchanged, and enables the operation to proceed smoothly.

[0043] Moreover, the device is easy to operate. The traction rod 4 can be driven to swing only by extending and retracting the driving rod 6 to rotate the shaft body 3, thereby realizing the driving operation of abduction or adduction of the patient's limbs. The shaft body 3 can be locked by keeping the locking length of the driving rod 6 unchanged to ensure the stability of the limb state.

[0044] The telescopic portion 41 and the driving rod 6 can be locked after the length is adjusted to ensure the stability of the use state. Therefore, the telescopic portion 41 and the driving rod 6 can be controlled by air cylinders, oil cylinders, electric push rods and other control elements.

[0045] According to a disclosed embodiment, the fixing clamp 7 includes an outer fixing ring 71 and a filling airbag 73. The outer fixing ring 71 includes an upper half ring and a lower half ring that can be opened and closed by hinges, and a locking portion 72 is provided between the upper half ring and the lower half ring to lock the openings of the two. When in use, the outer fixing ring 71 is opened and put on a suitable position of the limb, and then the upper half ring is closed and locked with the lower upper half ring. The filling airbag 73 is located inside the outer fixing ring 71, and the air nozzle of the filling airbag 73 is detachably connected to an inflator, and the filling airbag 73 can embrace the patient's lower limbs after being inflated.

[0046] Due to the different body shapes of different patients and the patients being in a bent-leg state, in order to enable the fixing clamp 7 to embrace the patient's limbs, the filling airbag 73 is provided to make up for the size difference. After the filling airbag 73 is inflated, it fills the gap between the outer fixing ring 71 and the limbs, so that the limbs and the fixing clamp 7 can maintain a stable fixed state. According to a disclosed embodiment, a circle of fixing grooves is provided on the inner wall of the outer fixing ring 71, and the filling airbag 73 is in a strip-shaped structure and is located in the fixing groove, which can prevent the filling airbag 73 from falling off from the outer fixing ring 71.

[0047] According to a disclosed embodiment, the locking portion 72 includes locking plates fixed to the opening ends of the upper half circle and the lower half circle. When the outer fixing ring 71 is buckled, the two locking plates overlap and are locked by nuts after bolts are passed through them.

[0048] According to a disclosed embodiment, the acetabular fracture traction device can also pull the femur toward the distal end. The acetabular fracture traction device also includes a top plate 9 and a driving mechanism 10. The top plate 9 can be located behind the tibia after the fixing clamp 7 embraces the patient's femur. The upper end of the top plate 9 can be rotatably connected and locked with the lower end of the distal end of the fixing clamp 7 by means of a rotating shaft assembly. The driving mechanism 10 can drive the upper base 1 to move toward the distal end and lock it to provide traction.

[0049] According to one disclosed embodiment, the driving mechanism 10 includes a lower base 101, an adjusting screw 103 and an adjusting block 104. The lower base 101 is disposed below the upper base 1, and a mounting groove 102 is provided on the lower base 101. The adjusting screw 103 is rotatably fixed in the mounting groove 102 by means of a bearing, and the distal end of the adjusting screw 103 extends out of the mounting groove 102 to form a rotating handle. The adjusting block 104 is threadedly connected to the adjusting screw 103 and fixed to the upper base 1, and the adjusting block 104 can move along the adjusting screw 103 as the adjusting screw 103 rotates.

[0050] According to one disclosed embodiment, the shaft assembly includes a rod body, a ring portion, and a first lock nut. The rod body is tangentially fixed to the lower portion of the distal end of the fixing clamp 7, and both ends of the rod body have a first threaded column with a diameter smaller than the rod body. The ring portion is sleeved on the threaded column and fixed on both sides of the upper end of the top plate 9. The first lock nut is threadedly connected to the first threaded column and is used to lock the ring portion with the rod body.

[0051] According to a disclosed embodiment, a suction cup 11 capable of being adsorbed on the operating table is fixed to the bottom of the lower base 101, so that a stable connection state can be maintained between the device body and the operating table.

[0052] The above are only preferred embodiments of the present invention. Any simple modification, deformation and equivalent substitution made by anyone to the present invention based on the contents of the present invention shall fall within the protection scope of the present invention.

Claims

1. A traction device for acetabular fracture, characterized in that: include: An upper base (1) having a horizontal lower bottom surface; A bearing seat (2) is fixed on the upper base (1); The shaft body (3) is assembled on the bearing seat (2); A traction rod (4) is arranged vertically, and its lower end is fixed to one end of the shaft body (3); the traction rod (4) has a telescopic portion (41) capable of adjusting its height; The connecting rod (5) is in a right-angled structure, one end of which is fixed to the other end of the shaft body (3); A driving rod (6) is arranged vertically, with its lower end fixed to the upper base (1) and its upper end hinged to the free end of the connecting rod (5); the driving rod (6) can be extended and locked, and is used to drive the shaft body (3) to rotate to realize the swing of the traction rod (4); A fixing clamp (7) is rotatably connected and locked to the top of the traction rod (4) by means of a connecting seat (8), the fixing clamp (7) being capable of encircling the femur of the patient, and the fixing clamp (7) comprising: The outer fixing ring (71) comprises an upper half ring and a lower half ring which can be opened and closed by means of hinges, and a locking portion (72) is provided between the upper half ring and the lower half ring for locking the openings of the two rings; A filling airbag (73) is located inside the outer fixing ring (71); the air nozzle of the filling airbag (73) is detachably connected to an inflation tube; and the filling airbag (73) is capable of hugging the patient's lower limbs after being inflated; Acetabular fracture distraction devices also include: A top plate (9) which can be located behind the tibia after the fixing clamp (7) embraces the patient's femur, and the upper end of the top plate (9) can be rotatably connected and locked with the lower end of the distal end of the fixing clamp (7) by means of a rotating shaft assembly; and The driving mechanism (10) is capable of driving the upper base (1) to move toward the distal end and lock it.

2. The acetabular fracture traction device according to claim 1, characterized in that: A circle of fixing grooves is provided on the inner wall of the outer fixing ring (71), and the filling airbag (73) is in a strip-shaped structure and is located in the fixing groove.

3. The acetabular fracture traction device according to claim 1, characterized in that: The locking portion (72) comprises locking plates fixed to the opening ends of the upper half circle and the lower half circle. When the outer fixing ring (71) is buckled, the two locking plates overlap and are locked by nuts after bolts are passed through them.

4. The acetabular fracture traction device according to claim 1, characterized in that: Said The shaft assembly includes: A rod body, tangentially fixed to the lower portion of the distal end of the fixing clamp (7), and having first threaded columns at both ends having a diameter smaller than that of the rod body; A ring portion is sleeved on the threaded column and fixed on both sides of the upper end of the top plate (9); and The first lock nut is threadedly connected to the first threaded column and is used to lock the ring portion and the rod body.

5. The acetabular fracture traction device according to claim 1, characterized in that: The driving mechanism (10) comprises: A lower base (101) is disposed below the upper base (1), and a mounting groove (102) is provided on the lower base (101); an adjusting screw (103) which is rotatably fixed in the mounting groove (102) by means of a bearing, wherein the distal end of the adjusting screw (103) extends out of the mounting groove (102) to form a rotating handle; and The adjusting block (104) is threadedly connected to the adjusting screw (103) and fixed to the upper base (1). The adjusting block (104) can move along the adjusting screw (103) as it rotates.

6. The acetabular fracture traction device according to claim 5, characterized in that: A suction cup (11) capable of being adsorbed on the operating table is fixed at the bottom of the lower base (101).

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