Bidirectional rotating pelvic osteotomy orthosis and control method thereof

Abstract

The present invention discloses a bidirectional rotating pelvic osteotomy orthosis and a control method thereof, belonging to the technical field of pelvic osteotomy orthosis, comprising a shaft and a spherical shaft fixed by the shaft and passing through the center of a ball, the shaft and the spherical shaft forming an integral structure, a support ring being provided on the outside of the spherical shaft, and two brackets for limiting the spherical shaft being symmetrically provided on the inner side of the support ring, a limiting cavity being provided at one end of the shaft, and a limiting through-hole being provided in the limiting cavity and passing through to the other end of the shaft, the head end of an embedded rod being movably inserted into the limiting through-hole, and the tail end of the embedded rod being connected to a clamping claw through a control assembly, the head end of the embedded rod being connected to the limiting assembly, and one end of the shaft being fixedly connected to a grip ring. The invention can facilitate the correction of the pelvic osteotomy part, and can facilitate the knowledge of the rotation angle of the pelvic osteotomy end in the sagittal plane and the coronal plane, thereby helping doctors to more accurately control the degree of the pelvic osteotomy part and helping doctors to perform pelvic correction surgery more intuitively.

Description

Technical Field

[0001] The present invention relates to the technical field of pelvic osteotomy orthoses, in particular to a bidirectional rotating pelvic osteotomy orthosis and a control method thereof. Background Art

[0002] Pelvic osteotomy is an orthopedic surgery that adjusts the pelvic structure to improve hip function or correct deformity. It is mainly used to treat developmental dysplasia of the hip, aseptic necrosis of the femoral head, post-traumatic hip deformity, and sequelae of septic hip arthritis.

[0003] The main process of pelvic correction surgery is to correct the pelvis by cutting the pelvis and clamping the pelvis with reduction clamps to reposition the acetabulum in the sagittal plane (rotated forward) and the coronal plane (rotated laterally).

[0004] In the above-mentioned pelvic correction surgery, the reduction forceps used are difficult to pull the pelvic osteotomy part, and it is difficult to visually see the angle of rotation of the pelvic osteotomy part in the sagittal and coronal planes;

[0005] Therefore, a bidirectional rotational pelvic osteotomy orthosis is needed to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a bidirectional rotating pelvic osteotomy orthosis and a control method thereof, so as to solve the problem mentioned in the background art that the reduction forceps in the existing pelvic correction surgery are rather strenuous in pulling the pelvic osteotomy part, and it is difficult to know the rotation angles of the pelvic osteotomy part in the sagittal plane and the coronal plane.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A bidirectional rotating pelvic osteotomy orthosis comprises a shaft and a ball shaft fixed by the shaft and passing through the center of a ball. The shaft and the ball shaft form an integral structure. A support ring is provided on the outside of the ball shaft, and two brackets for limiting the ball shaft are symmetrically provided on the inner side of the support ring. A limiting cavity is provided at one end of the shaft, and a limiting through hole is provided in the limiting cavity and passes through the other end of the shaft. The head end of the embedded rod is movably extended into the limiting through hole, and the tail end of the embedded rod is connected to a clamp through a control component. The head end of the embedded rod is connected to the limiting component. One end of the shaft is fixedly connected to a grip ring. The outer side of the ball shaft is connected to the support ring through an angle measuring component. A compass and a heavy ball are respectively installed at the top and bottom ends of the support ring. A handle bar that crosses the compass is also installed at the top of the support ring.

[0009] Preferably, the control component includes two support arms and a support block arranged between opposite sides of the tail ends of the two symmetrical jaws. The parts of the two symmetrical jaws close to the head ends are rotatably connected so that when the tail ends of the two jaws move away from each other, their head ends move closer to each other. One end of the support arm is axially connected to the side surface of the corresponding tail end of the jaw, and the other ends of the two support arms are respectively axially connected to the two ends of the support block. The center position of the support block is connected to the tail end of the embedded rod through a pull rod.

[0010] Preferably, the control component also includes a support tube with one end axis connected to the tail end surface of the embedded rod, and there are four support tubes, two of which are symmetrically arranged on the upper surface and lower surface of the tail end of the embedded rod, and the upper and lower surfaces of the tail ends of the two clamps are both axially connected to one end of the corresponding support rod, the four support rods and the four support tubes correspond one to one, and the corresponding support rods and support tubes are movably nested and connected, and a spring is installed between the nested support rods and support tubes.

[0011] Preferably, the limiting assembly includes a regulating rod that movably extends into the limiting cavity, a reset cavity is provided at the head end of the embedded rod, and the bearing in the reset cavity is connected to the axial end of the regulating rod, and a torsion spring is also provided between the axial end of the regulating rod and the inner side of the reset cavity.

[0012] Preferably, the limiting assembly also includes limiting ratchets distributed at equal intervals on the outside of the middle part of the regulating rod, limiting pawls distributed at equal intervals on the inside of the limiting cavity, and the limiting pawls and the limiting ratchets are meshed and connected, and a grip rod is installed at the end of the regulating rod extending outside the limiting cavity.

[0013] Preferably, the limiting pawl and the limiting ratchet are both arc-shaped, and the arc angle range is not less than 60°, and the arc angle is less than 90°.

[0014] Preferably, the limiting through hole is a flat through hole structure, and the embedded rod and the limiting through hole form a matching nested structure for limiting the embedded rod to prevent it from rotating relative to the shaft.

[0015] Preferably, the angle measuring assembly includes an arc-shaped part symmetrically connected to the outside of the spherical shaft, and the support ring and the arc-shaped part are respectively provided with longitudinal strip grooves and transverse strip grooves running through the inner and outer sides thereof, and corresponding measuring rods are passed through the longitudinal strip grooves and transverse strip grooves, and the two ends of the measuring rod are respectively slidably connected to the longitudinal strip grooves and transverse strip grooves.

[0016] Preferably, pointers are provided at the locations of both ends of the measuring rod close to the longitudinal strip groove and the transverse strip groove, and scales are provided on the outer edges of the longitudinal strip groove and the transverse strip groove.

[0017] A method for controlling a pelvic osteotomy orthosis, the method comprising:

[0018] Step 1: Hold the grip ring and extend the head end of the clamp to the site of pelvic osteotomy. Then, hold the grip rod with four fingers and apply force to bring the grip rod close to the grip ring.

[0019] During this process, the control rod drives the embedded rod to move, causing the pull rod to drag the support block, and then the two support arms open the tail ends of the two clamps, so that the head ends of the clamps approach each other and clamp the pelvic osteotomy area;

[0020] During the movement of the regulating rod, the limiting ratchet and the limiting pawl can move relative to each other, thereby limiting the regulating rod and preventing the regulating rod from moving in the opposite direction and causing the clamping claw to loosen the pelvic osteotomy part;

[0021] Step 2: Observe the position indicated by the compass and remember it;

[0022] Step 3: By rotating the entire structure composed of the grip ring and the shaft, the clamping jaws are driven to rotate to adjust the angle of the pelvic osteotomy site, thereby facilitating correction of the pelvic osteotomy site;

[0023] Step 4: During the process of rotating the pelvic osteotomy part, if you want to know the angle of rotation, you can first observe the position indicated by the compass. If the indicated position is different from the previous position, you can hold the handle and rotate the support ring until the indicated position is the same as the previous position. At this time, observe the two pointers on the measuring rod, pointing to the scales of the longitudinal strip groove and the transverse strip groove respectively. The angle value of the pelvic osteotomy part rotation can be directly read by the two pointers pointing to the scales of the longitudinal strip groove and the transverse strip groove;

[0024] Step 5. After rotating the pelvic osteotomy part to the appropriate position, rotate the grip rod to drive the control rod to rotate, so that the limit ratchet and the limit pawl are completely dislocated. Then the embedded rod can move in the opposite direction, and then under the action of the spring, the clamping claw is reset, thereby loosening the pelvic osteotomy part. Then loosen the grip rod and reset it under the action of the torsion spring.

[0025] Compared with the existing technology, the present invention has the following advantages: the bidirectional rotating pelvic osteotomy orthosis can facilitate the correction of the pelvic osteotomy part and can easily know the rotation angle of the pelvic osteotomy end in the sagittal plane and the coronal plane, thereby helping the doctor to more accurately control the degree of the pelvic osteotomy part and help the doctor perform pelvic correction surgery more intuitively:

[0026] 1. By holding the grip ring and holding the grip rod with four fingers, it is easier to apply force. Compared with traditional reduction forceps, which only rely on two fingers to apply force, it is easier for the doctor to pull the pelvic osteotomy part, which helps to reduce the intensity of the doctor's pelvic correction surgery.

[0027] 2. The support ring can be kept in a relatively stable state by using the weight ball and compass. If the support ring deflects during the rotation of the shaft, the support ring can be adjusted by using the handle. After adjusting the support ring, the angle of rotation of the pelvic osteotomy part in the sagittal and coronal planes can be directly read by the pointer on the measuring rod, which helps the doctor to more accurately control the degree of pulling the pelvic osteotomy part. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 It is a schematic diagram of a partial top cross-sectional structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the main cross-sectional structure of the present invention;

[0031] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure of point A;

[0032] Figure 5 For the present invention Figure 3 A schematic diagram of the enlarged structure of point B;

[0033] Figure 6 This is a schematic diagram of a partial main cross-sectional structure of the present invention;

[0034] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of point C in the middle;

[0035] Figure 8 This is a schematic diagram of the structure of the present invention when viewed from above;

[0036] Figure 9 This is a schematic diagram of the connection structure between the embedded rod and the regulating rod of the present invention;

[0037] Figure 10 For the present invention Figure 9 Schematic diagram of the enlarged structure at point D.

[0038] In the figure: 1. shaft; 2. ball shaft; 3. clamping claw; 4. grip ring; 5. grip rod; 6. support ring; 7. compass; 8. weight ball; 9. handle; 10. arc-shaped part; 11. longitudinal strip groove; 12. measuring rod; 13. embedded rod; 14. regulating rod; 15. bracket; 16. support arm; 17. support block; 18. pull rod; 19. support rod; 20. support tube; 21. spring; 22. limit cavity; 23. limit through hole; 24. reset cavity; 25. torsion spring; 26. transverse strip groove; 27. pointer; 28. limit ratchet; 29. ​​limit pawl. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figures 1-10 , the present invention provides the following technical solutions:

[0041] Embodiment 1: In order to solve the problem that previous reduction forceps mainly rely on two fingers when pulling pelvic osteotomy, which makes the pulling process more strenuous, the following technical solution is provided, specifically, a bidirectional rotational pelvic osteotomy orthosis, including a shaft 1 and a ball shaft 2 fixed by it and passing through the center of the ball, the shaft 1 and the ball shaft 2 form an integral structure, a support ring 6 is provided on the outside of the ball shaft 2, and two brackets 15 for limiting the ball shaft 2 are symmetrically provided on the inner side of the support ring 6, a limiting cavity 22 is provided at one end of the shaft 1, and a limiting through hole 23 is provided in the limiting cavity 22 and passes through the other end of the shaft 1, the head end of the embedded rod 13 is movably extended into the limiting through hole 23, and the tail end of the embedded rod 13 is connected to the clamping claw 3 through the control component, the head end of the embedded rod 13 is connected to the limiting component, and one end of the shaft 1 is fixedly connected to the grip ring 4.

[0042] The control component includes two support arms 16 and a support block 17 arranged between opposite sides of the tail ends of the two symmetrical clamping jaws 3. The parts of the two symmetrical clamping jaws 3 near the head ends are rotatably connected, so that when the tail ends of the two clamping jaws 3 move away from each other, their head ends move closer to each other. One end of the support arm 16 is axially connected to the side surface of the corresponding tail end of the clamping jaw 3, and the other ends of the two support arms 16 are axially connected to the two ends of the support block 17. The center position of the support block 17 is connected to the tail end of the embedded rod 13 through a pull rod 18. The control component also includes a support tube 20 with one end axially connected to the tail end surface of the embedded rod 13. There are four support tubes 20, and two are symmetrically provided on the upper and lower surfaces of the tail end of the embedded rod 13 respectively. The upper and lower surfaces of the tail ends of the two clamping jaws 3 are axially connected to one end of the corresponding support rod 19. The four support rods 19 correspond to the four support tubes 20 one by one, and the corresponding support rods 19 and support tubes 20 are movably nested and connected. A spring 21 is installed between the nested support rods 19 and support tubes 20. Figure 3-Figure 4 , hold the grip ring 4 with your hand, and hold the grip rod 5 with four fingers. Apply force with four fingers to make the grip rod 5 close to the grip ring 4, thereby driving the regulating rod 14 to move, so that it moves synchronously with the coaxially connected embedded rod 13. When the embedded rod 13 moves, it can drive the pull rod 18 to move synchronously, thereby achieving the purpose of dragging the support block 17. During this process, the two support arms 16 will drive the tail ends of the two clamps 3 to approach each other, so that the head end of the clamp 3 clamps the part of the pelvic osteotomy.

[0043] The limiting assembly includes a regulating rod 14 that is movable and extends into the limiting cavity 22, a reset cavity 24 is provided at the head end of the embedded rod 13, and the shaft end of the regulating rod 14 is connected to the bearing in the reset cavity 24, and a torsion spring 25 is provided between the shaft end of the regulating rod 14 and the inner side of the reset cavity 24. The limiting assembly also includes limiting ratchets 28 that are evenly spaced and distributed on the outer side of the middle part of the regulating rod 14, and limiting pawls 29 are evenly spaced and distributed on the inner side of the limiting cavity 22, and the limiting pawls 29 are meshed with the limiting ratchets 28. The end of the regulating rod 14 that extends outside the limiting cavity 22 is equipped with a grip rod 5. Figure 3 、 Figure 5 、 Figure 9 and Figure 10 During the movement of the regulating rod 14, the limiting pawl 29 and the limiting ratchet 28 can produce relative movement, thereby preventing the regulating rod 14 and the embedded rod 13 from moving in the opposite direction, thereby ensuring that the clamping jaws 3 stably clamp the pelvic osteotomy part. When the clamping jaws 3 need to be loosened, it is only necessary to rotate the gripping rod 5 to completely dislocate the limiting pawl 29 and the limiting ratchet 28, thereby allowing the regulating rod 14 and the embedded rod 13 to move in the opposite direction and reset, so that the clamping jaws 3 loosen the pelvic osteotomy part.

[0044] The limiting pawl 29 and the limiting ratchet 28 are both arc-shaped, and their arc angle range is not less than 60°, and their arc angle is less than 90°. The limiting through hole 23 is a flat through hole structure, and the embedded rod 13 and the limiting through hole 23 form a matching nested structure, which is used to limit the embedded rod 13 to prevent it from rotating relative to the shaft 1.

[0045] Embodiment 2: In order to solve the problem that it is difficult to know the rotation angle of the pelvic osteotomy part in the sagittal plane and the coronal plane when the reduction forceps pull the pelvic osteotomy part in the past, which causes the doctor to rely on experience to judge, which is not conducive to the doctor to perform pelvic correction surgery accurately and easily, the following technical solution is provided. Specifically, the outer side of the ball shaft 2 is connected to the support ring 6 through an angle measuring component, and the top and bottom ends of the support ring 6 are respectively installed with a compass 7 and a heavy ball 8, and the top of the support ring 6 is also installed with a handle 9 that crosses the compass 7.

[0046] The angle measuring assembly includes an arc-shaped member 10 symmetrically connected to the outside of the ball shaft 2, and the support ring 6 and the arc-shaped member 10 are respectively provided with a longitudinal strip groove 11 and a transverse strip groove 26 running through the inner and outer sides thereof, and the longitudinal strip groove 11 and the transverse strip groove 26 are respectively penetrated by a corresponding measuring rod 12, and the two ends of the measuring rod 12 are respectively slidably connected with the longitudinal strip groove 11 and the transverse strip groove 26, and the two ends of the measuring rod 12 are respectively provided with a pointer 27 near the longitudinal strip groove 11 and the transverse strip groove 26, and the outer edges of the longitudinal strip groove 11 and the transverse strip groove 26 are provided with scales. Figure 1 、 Figure 2 、 Figure 6 、 Figure 7 and Figure 8 In the process of rotating the shaft 1, the ball shaft 2 will be driven to rotate synchronously. When the ball shaft 2 rotates, the measuring rod 12 will rotate relative to the support ring 6 and relative to the arc-shaped member 10. At this time, the two pointers 27 on the measuring rod 12 will move on the scales on the longitudinal strip groove 11 and the transverse strip groove 26 respectively. When it is necessary to read the scale, it is necessary to calibrate the position of the support ring 6 through the handle 9 and the compass 7, and then read the rotation angle of the pelvic osteotomy part in the sagittal plane and the coronal plane through the scales pointed by the two pointers 27 on the measuring rod 12.

[0047] A method for controlling a pelvic osteotomy orthosis, the method comprising:

[0048] Step 1: Hold the grip ring 4 and extend the head end of the clamping jaw 3 to the site of pelvic osteotomy. Then, hold the grip rod 5 with four fingers and apply force to bring the grip rod 5 close to the grip ring 4.

[0049] During this process, the control rod 14 drives the embedded rod 13 to move, so that the pull rod 18 drags the support block 17, and then the two support arms 16 open the tail ends of the two clamping jaws 3, so that the head ends of the clamping jaws 3 are close to each other, thereby clamping the pelvic osteotomy site;

[0050] During the movement of the regulating rod 14, the limiting ratchet 28 and the limiting pawl 29 can move relative to each other, thereby limiting the regulating rod 14 and preventing the regulating rod 14 from moving in the opposite direction and causing the clamping jaw 3 to loosen the pelvic osteotomy part;

[0051] Step 2: Observe the position indicated by the compass 7 and remember it;

[0052] Step 3: By rotating the entire structure formed by the grip ring 4 and the shaft 1, the clamping jaws 3 are driven to rotate to adjust the angle of the pelvic osteotomy site, thereby facilitating correction of the pelvic osteotomy site;

[0053] Step 4: During the process of rotating the pelvic osteotomy part, if you want to know the angle of rotation, you can first observe the position indicated by the compass 7. If the indicated position is different from the previous position, you can hold the handle 9 and rotate the support ring 6 until the indicated position is the same as the previous position. At this time, observe the two pointers 27 on the measuring rod 12, which point to the scales of the longitudinal strip groove 11 and the transverse strip groove 26 respectively. The angle value of the pelvic osteotomy part rotation can be directly read by the two pointers 27 pointing to the scales of the longitudinal strip groove 11 and the transverse strip groove 26;

[0054] Step 5. After rotating the pelvic osteotomy part to the appropriate position, rotate the grip rod 5 to drive the regulating rod 14 to rotate, thereby completely dislocating the limit ratchet 28 and the limit pawl 29. Then the embedded rod 13 can move in the reverse direction, and then under the action of the spring 21, the clamping jaw 3 is reset, thereby releasing the pelvic osteotomy part. Then, release the grip rod 5 and reset the grip rod 5 under the action of the torsion spring 25.

[0055] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0056] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A bidirectional rotating pelvic osteotomy orthosis, comprising a shaft (1) and a spherical shaft (2) fixed by the shaft and penetrating the center of a sphere, wherein the shaft (1) and the spherical shaft (2) form an integral structure, characterized in that: The outside of the ball shaft (2) is provided with a support ring (6), and two brackets (15) for limiting the ball shaft (2) are symmetrically provided on the inner side of the support ring (6), one end of the shaft (1) is provided with a limit cavity (22), and a limit through hole (23) is provided in the limit cavity (22) and extends to the other end of the shaft (1), the head end of the embedded rod (13) is movably extended into the limit through hole (23), and the tail end of the embedded rod (13) is connected to the clamping claw (3) through the control component, the limit through hole (23) is a flat through hole structure, the embedded rod (13) and the limit through hole (23) form a matching nested structure for limiting the embedded rod (13) to prevent it from rotating relative to the shaft (1), the head end of the embedded rod (13) is connected to the limit component, one end of the shaft (1) is fixedly connected to the grip ring (4), the outer side of the ball shaft (2) is connected to the support ring (6) through the angle measuring component. ) are connected, and the top and bottom ends of the support ring (6) are respectively installed with a compass (7) and a heavy ball (8), and the top of the support ring (6) is also installed with a handle (9) across the compass (7), the angle measuring assembly includes an arc member (10) symmetrically connected to the outside of the ball shaft (2), the support ring (6) and the arc member (10) are respectively provided with a longitudinal strip groove (11) and a transverse strip groove (26) running through the inner and outer sides thereof, and the longitudinal strip groove (11) and the transverse strip groove (26) are penetrated by a corresponding measuring rod (12), the two ends of the measuring rod (12) are respectively slidably connected to the longitudinal strip groove (11) and the transverse strip groove (26), the two ends of the measuring rod (12) are respectively provided with a pointer (27) at the position close to the longitudinal strip groove (11) and the transverse strip groove (26), and the outer edges of the longitudinal strip groove (11) and the transverse strip groove (26) are provided with scales.

2. The bidirectional rotating pelvic osteotomy orthosis according to claim 1, characterized in that: The control component includes two support arms (16) and a support block (17) arranged between opposite sides of the tail ends of the two symmetrical clamps (3). The parts of the two symmetrical clamps (3) close to the head ends are rotatably connected so that when the tail ends of the two clamps (3) move away from each other, their head ends move closer to each other. One end of the support arm (16) is axially connected to the side surface of the corresponding tail end of the clamp (3), and the other ends of the two support arms (16) are axially connected to the two ends of the support block (17) respectively. The center position of the support block (17) is connected to the tail end of the embedded rod (13) through a pull rod (18).

3. The bidirectional rotational pelvic osteotomy orthosis according to claim 2, characterized in that: The control component further includes a support tube (20) having one end axially connected to the surface of the tail end of the embedded rod (13). Four support tubes (20) are provided, and two are symmetrically provided on the upper surface and the lower surface of the tail end of the embedded rod (13). The upper and lower surfaces of the tail ends of the two clamping jaws (3) are both axially connected to one end of the corresponding support rod (19). The four support rods (19) and the four support tubes (20) correspond one to one, and the corresponding support rods (19) and support tubes (20) are movably nested and connected. A spring (21) is installed between the nested support rods (19) and support tubes (20).

4. The bidirectional rotational pelvic osteotomy orthosis according to claim 3, characterized in that: The limiting assembly includes a regulating rod (14) that movably extends into the limiting cavity (22); a reset cavity (24) is provided at the head end of the embedded rod (13); and a bearing in the reset cavity (24) is connected to the axial end of the regulating rod (14); and a torsion spring (25) is further provided between the axial end of the regulating rod (14) and the inner side of the reset cavity (24).

5. The bidirectional rotational pelvic osteotomy orthosis according to claim 4, characterized in that: The limiting assembly further comprises limiting ratchets (28) distributed at equal intervals on the outside of the middle of the regulating rod (14), limiting pawls (29) distributed at equal intervals on the inside of the limiting cavity (22), and the limiting pawls (29) and the limiting ratchets (28) are meshed and connected, and a gripping rod (5) is installed at the end of the regulating rod (14) extending outside the limiting cavity (22).

6. The bidirectional rotational pelvic osteotomy orthosis according to claim 5, characterized in that: The limiting pawl (29) and the limiting ratchet (28) are both arc-shaped, and their arc angle range is not less than 60°, and their arc angle is less than 90°.

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