Angle measuring device for pelvic rotary osteotomy

Abstract

The invention discloses an angle measuring device for pelvic rotary osteotomy, and belongs to the technical field of angle measurement for osteotomy, the angle measuring device comprises a connecting mechanism and a supporting shell mounted on reduction forceps through the connecting mechanism, a circular groove is formed in the side face of the supporting shell, a disc is arranged in the circular groove, a central point bearing of the disc is connected with an overhanging pointer, and the overhanging pointer is connected with the connecting mechanism. The supporting shell is of a hollow square structure, the upper surface of the supporting shell is provided with a visual window penetrating through the inner side and the outer side of the supporting shell, the center of the interior of the supporting shell is connected with the compass through the balance mechanism, the center of the upper surface of the compass is provided with the compass pointer, and the connecting mechanism is arranged on the outer side face of the supporting shell. The device is small in size, can be conveniently used in a pelvic orthopedic operation, can be easily mounted on reduction forceps, and can be easily attached to the reduction forceps for use.

Description

Technical Field

[0001] The invention relates to the technical field of osteotomy angle measurement, in particular to a pelvic rotation osteotomy angle measurement device. Background Art

[0002] Developmental hip dysplasia is a common limb deformity in infants and young children. Pelvic correction surgery is an important treatment. In the treatment, accurate measurement and control of the pelvic rotation osteotomy angle is crucial, which directly affects the degree of acetabulum inclusion of the femoral head, as well as the stability and development of the hip joint after reduction. Accurate angle measurement helps to achieve good head-acetabulum inclusion, improve the success rate of surgery, and reduce postoperative complications. If the angle of pelvic rotation osteotomy is not well controlled, it may lead to poor recovery of hip joint function, pain, limited mobility and other problems, which seriously affect the patient's quality of life. Accurate angle measurement devices can help doctors perform surgery more accurately, so that patients can obtain better hip joint function and improve their quality of life after surgery. In existing pelvic orthopedic surgeries, there is no device that can effectively measure the rotation angle after osteotomy. Due to developmental hip dysplasia, the front and lateral sides of the acetabulum often have poor coverage of the femoral head. Therefore, when the pelvic osteotomy is rotated, the distal end of the osteotomy rotates forward and outward, not just in the coronal or sagittal plane, so it cannot be effectively measured. In addition, most of the angle measurement devices are large in size, which is not conducive to use in surgery. As a result, the rotation angle of the osteotomy during surgery depends entirely on the doctor's experience, which is not conducive to ensuring the success rate of the operation: Therefore, a device for measuring the angle of pelvic rotation osteotomy is needed to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a device for measuring the angle of pelvic rotation osteotomy, so as to solve the problem in the above-mentioned background art that there is no device for effectively measuring the osteotomy angle in the existing pelvic correction surgery.

[0004] To achieve the above object, the present invention provides the following technical solutions: A device for measuring the angle of pelvic rotational osteotomy comprises a connecting mechanism and a supporting shell mounted on a reduction clamp via the connecting mechanism, a circular groove is arranged on the side of the supporting shell, a circular disc is arranged in the circular groove, a hanging pointer is connected to the center point bearing of the circular disc, the supporting shell is a hollow square structure, and a visual window penetrating the inner and outer sides thereof is arranged on the upper surface of the supporting shell, the inner center position of the supporting shell is connected to a compass via a balancing mechanism, and a compass pointer is arranged at the center position of the upper surface of the compass, and the connecting mechanism is arranged on the outer side surface of the supporting shell.

[0005] Preferably, transparent resin glass is provided on both the viewing window and the circular groove, and the resin glass is used to seal the viewing window and the circular groove, thereby protecting the internal structure of the viewing window and the circular groove.

[0006] Preferably, the balancing mechanism includes a support block connected to the center position inside the support shell, and a convex groove is provided on the upper surface of the support block, a limit ball is slidably installed in the convex groove, and a connecting rod with an axis passing through the center of the ball is connected to the limit ball, two limit rods symmetrical about the axis of the connecting rod are movably passed through the limit ball, and both ends of the limit rod are fixedly connected to the convex groove, a connecting block coaxial with the limit rod is provided on the connecting rod, and the upper surface of the connecting block is connected to the center position of the lower surface of the compass through a universal ball shaft, and floating blocks are evenly distributed on the lower surface of the compass, and the center position of the lower surface of the compass is connected to the connecting block through a universal hose.

[0007] Preferably, the interior of the supporting shell is filled with three quarters of white mineral oil to ensure that the compass can stably float in the supporting shell in a sealed environment.

[0008] Preferably, both the disk and the compass are provided with angle scales for intuitively measuring angles.

[0009] Preferably, the connecting mechanism includes a fixed sleeve fixedly connected to the outer side of the supporting shell, and a piston tube 1 is fixedly passed through the fixed sleeve, the lower end of the piston rod 1 is seamlessly slidably connected to the inner side of the upper end of the piston tube 1, and the outer side surface of the supporting shell at the piston tube 1 is opposite to the outer side surface of the supporting shell at the circular groove, and the other two side surfaces of the supporting shell are axially connected with mounting blocks, and two piston tubes 2 are connected to each mounting block, and one end of the piston rod 2 is seamlessly slidably connected to the inner side of the open end of the piston tube 2, and the other end of the piston rod 2 is axially connected with a U-shaped clip, and the U-shaped clip is snap-connected to the reset clamp, and the lower surface of the supporting shell is fixedly connected with a Y-shaped air pipe through a fixed support, the two piston tubes 2 on the same side are through-connected, and the three open ends of the Y-shaped air pipe are respectively through-connected to the piston tube 1 and the piston tubes 2 on both sides.

[0010] Preferably, the two piston tubes connected to each mounting block form a V-shaped structure, which is used to improve the stability of the connection between the supporting housing and the reset clamp.

[0011] Preferably, the two U-shaped clamps on the same side face upward and downward respectively, so as to further improve the stability of the connection between the support housing and the reset clamp.

[0012] Preferably, the piston rod 1 is composed of a piston disc and a screw, wherein the piston disc is seamlessly slidably connected to the inner side of the upper end of the piston tube 1, and the piston disc is coaxially bearing-connected to the screw, and the screw thread passes through the upper end of the piston tube 1.

[0013] Preferably, the buoyancy of all the floating blocks is greater than the total gravity of the structure consisting of the compass, the connecting blocks, the connecting rods and the limiting balls, so as to ensure that the compass can stably float on the surface of the white mineral oil in the supporting shell.

[0014] Compared with the prior art, the present invention has the following beneficial effects: the pelvic rotation osteotomy angle measuring device is small in size and can be conveniently used in pelvic correction surgery; in addition, the device can be easily installed on the reduction clamp, which is helpful for being attached to the reduction clamp for use: 1. The compass can be kept horizontal under the action of the balance mechanism by the principle that the liquid surface is always horizontal. In addition, the compass can be moved together with the supporting shell, so as to measure the angle of rotation in the horizontal direction when the supporting shell moves. In addition, because the suspended pointer is always facing downward under the action of gravity, it can cooperate with the disc in the circular groove to measure the angle of rotation in the vertical direction when the supporting shell moves. By measuring the angle of rotation in the horizontal direction and the angle of rotation in the vertical direction, the outward and forward rotation angle of the osteotomy can be measured; 2. The U-shaped clamp is clamped on the reduction clamp, and after the reduction clamp clamps the osteotomy, the piston rod 1 can be rotated to move the piston rod 2 in the piston tube 2, so that the U-shaped clamp applies an outward force to the reduction clamp, and the reduction clamp is provided with a locking structure, so the support shell can be fixed on the reduction clamp, which is conducive to the use of the device in conjunction with the reduction clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the top view of the support shell structure of the present invention; Figure 3 This is a bottom view of the structure of the support shell of the present invention; Figure 4 This is a schematic diagram of the longitudinal connection structure of the support shell of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the enlarged structure of point A; Figure 6 This is a schematic diagram of the cross-sectional connection structure of the support shell of the present invention; Figure 7 For the present invention Figure 6 A schematic diagram of the enlarged structure of point B in the middle; Figure 8 It is a schematic diagram of the connection structure of the U-shaped clamp and the Y-shaped gas pipe of the present invention.

[0016] In the figure: 1. reset clamp; 2. U-shaped clamp; 3. support shell; 4. viewing window; 5. circular groove; 6. hanging pointer; 7. compass; 8. compass pointer; 9. piston rod one; 10. fixing sleeve; 11. piston tube one; 12. Y-shaped air pipe; 13. fixing support; 14. piston tube two; 15. piston rod two; 16. connecting block; 17. universal hose; 18. floating block; 19. connecting rod; 20. limiting ball; 21. convex groove; 22. limiting rod; 23. supporting block; 24. mounting block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0018] See also Figure 1-Figure 8 , the present invention provides the following technical solutions: Embodiment 1: In order to solve the problem that the osteotomy rotation angle cannot be effectively measured in previous pelvic orthopedic surgeries, the following technical solution is provided, specifically, a pelvic rotation osteotomy angle measuring device, including a connecting mechanism and a supporting shell 3 installed on the reduction clamp 1 through the connecting mechanism, a circular groove 5 is provided on the side of the supporting shell 3, and a circular disc is provided in the circular groove 5, and a hanging pointer 6 is connected to the center point bearing of the circular disc, the supporting shell 3 is a hollow square structure, and a visual window 4 is provided on the upper surface of the supporting shell 3 that runs through the inner and outer sides thereof, the inner center position of the supporting shell 3 is connected to the compass 7 through a balancing mechanism, and a compass pointer 8 is provided at the center position of the upper surface of the compass 7, transparent resin glass is provided on the visual window 4 and the circular groove 5, and the resin glass is used to seal the visual window 4 and the circular groove 5, so as to protect the internal structure of the visual window 4 and the circular groove 5, and through the circular disc provided in the circular groove 5 and the hanging pointer 6 that is always vertical, the rotation angle of the osteotomy on the vertical plane can be intuitively measured when the supporting shell 3 rotates.

[0019] The balancing mechanism includes a support block 23 connected to the center position inside the support shell 3, and a convex groove 21 is provided on the upper surface of the support block 23, a limit ball 20 is slidably installed in the convex groove 21, and the limit ball 20 is connected to a connecting rod 19 whose axis passes through the center of the ball, and two limit rods 22 symmetrical about the axis of the connecting rod 19 are movably passed through the limit ball 20, and the two ends of the limit rod 22 are fixedly connected in the convex groove 21, and a connecting block 16 coaxial with the connecting rod 19 is provided on the connecting rod 19, and the upper surface of the connecting block 16 is connected to the center position of the lower surface of the compass 7 through a universal ball shaft, and the lower surface of the compass 7 is also evenly distributed with floating blocks 18, and the center position of the lower surface of the compass 7 is connected to the connecting block 16 through a universal hose 17. When in use, due to the buoyancy generated by the floating block 18 and the setting of the universal ball shaft, This will cause the compass 7 to float on the liquid surface in the supporting shell 3, thereby ensuring that the compass 7 is horizontal. In addition, the limiting rod 22 can ensure that the compass 7 moves with the supporting shell 3. During this process, the compass pointer 8 always points to the same direction. The angle of rotation of the compass pointer 8 relative to the compass 7 is read out, which is the angle of rotation of the osteotomy in the horizontal direction. The interior of the supporting shell 3 is filled with three-quarters of white mineral oil, which is used to ensure that the compass 7 can stably float in the supporting shell 3 in a sealed environment. Angle scales are provided on the disc and the compass 7 for intuitively measuring angles. The buoyancy of all floating blocks 18 is greater than the total gravity of the structure composed of the compass 7, the connecting block 16, the connecting rod 19 and the limiting ball 20, ensuring that the compass 7 can stably float on the white mineral oil liquid surface in the supporting shell 3.

[0020] Embodiment 2: In order to solve the problem that the previous angle measuring device cannot be used in conjunction with the osteotomy clamp, the following technical solution is provided. Specifically, the connecting mechanism is arranged on the outer side of the support shell 3.

[0021] The connecting mechanism includes a fixed sleeve 10 fixedly connected to the outside of the support shell 3, and a piston tube 11 is fixedly passed through the fixed sleeve 10, the inner side of the upper end of the piston tube 11 is seamlessly slidably connected to the lower end of the piston rod 9, and the outer side surface of the support shell 3 where the piston tube 11 is located is opposite to the outer side surface of the support shell 3 where the circular groove 5 is located, and the other two side surfaces of the support shell 3 are axially connected to the mounting blocks 24, and each mounting block 24 is connected to two piston tubes 214, the inner side of the open end of the piston tube 214 is seamlessly slidably connected to one end of the piston rod 215, and the other end of the piston rod 215 is axially connected to the U-shaped clamp 2, the U-shaped clamp 2 is snap-fitted and connected to the reset clamp 1, and the lower surface of the support shell 3 is fixedly connected to The Y-shaped air supply pipe 12 and the two piston tubes 14 on the same side are connected through, and the three open ends of the Y-shaped air supply pipe 12 are respectively connected with the piston tube 1 11 and the piston tubes 14 on both sides. When in use, the U-shaped clamp 2 is first clamped on the reduction clamp 1, and then the osteotomy is clamped by the reduction clamp 1, and then the piston rod 1 9 is rotated. At this time, the gas in the piston tube 11 will be transported to the piston tube 14 through the Y-shaped air supply pipe 12, so that the piston rod 15 moves outward, so that the U-shaped clamp 2 applies an outward force to the reduction clamp 1. Due to the locking structure provided on the reduction clamp 1, the shape of the osteotomy clamped by the reduction clamp 1 is fixed, and then the position of the support shell 3 is fixed, so that the support shell 3 moves together with the reduction clamp 1.

[0022] The two piston tubes 14 connected to each mounting block 24 form a V-shaped structure, which is used to improve the stability of the connection between the support shell 3 and the reset clamp 1. The two U-shaped clamps 2 on the same side are respectively facing upward and downward, which are used to further improve the stability of the connection between the support shell 3 and the reset clamp 1. The piston rod 9 is composed of a piston disc and a screw, wherein the piston disc is seamlessly slidably connected to the inner side of the upper end of the piston tube 11, and the piston disc is connected to the screw coaxial bearing, and the screw thread runs through the upper end of the piston tube 11.

[0023] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0024] Although 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 the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the angle of pelvic rotational osteotomy, comprising a connecting mechanism and a supporting shell (3) mounted on a reduction clamp (1) via the connecting mechanism, characterized in that: A circular groove (5) is provided on the side of the support shell (3), and a circular disc is provided in the circular groove (5); a hanging pointer (6) is connected to a bearing at the center point of the circular disc; the support shell (3) is a hollow square structure, and a visual window (4) is provided on the upper surface of the support shell (3) and passes through both sides thereof; the inner center position of the support shell (3) is connected to a compass (7) via a balancing mechanism, and a compass pointer (8) is provided at the center position of the upper surface of the compass (7); and the connecting mechanism is provided on the outer side surface of the support shell (3).

2. The device for measuring the angle of pelvic rotation osteotomy according to claim 1, characterized in that: The visible window (4) and the circular groove (5) are both provided with transparent resin glass, and the resin glass is used to seal the visible window (4) and the circular groove (5), thereby protecting the internal structures of the visible window (4) and the circular groove (5).

3. The device for measuring the angle of pelvic rotation osteotomy according to claim 2, characterized in that: The balancing mechanism comprises a support block (23) connected to the center position inside the support shell (3), and a convex groove (21) is provided on the upper surface of the support block (23), a limit ball (20) is slidably installed in the convex groove (21), and the limit ball (20) is connected to a connecting rod (19) whose axis passes through the center of the ball, and two limit rods (22) symmetrical about the axis of the connecting rod (19) are movably passed through the limit ball (20), and the two ends of the limit rod (22) are fixedly connected to the convex groove (21), and a connecting block (16) coaxial with the connecting rod (19) is provided on the connecting rod (19), and the upper surface of the connecting block (16) is connected to the center position of the lower surface of the compass (7) through a universal ball shaft, and the lower surface of the compass (7) is also evenly distributed with floating blocks (18), and the center position of the lower surface of the compass (7) is connected to the connecting block (16) through a universal hose (17).

4. The device for measuring the angle of pelvic rotational osteotomy according to claim 3, characterized in that: The interior of the support shell (3) is filled with three quarters of white mineral oil, which is used to ensure that the compass (7) can stably float in the support shell (3) in a sealed environment.

5. The device for measuring the angle of pelvic rotation osteotomy according to claim 4, characterized in that: The disk and the compass (7) are both provided with angle scales for intuitively measuring angles.

6. The device for measuring the angle of pelvic rotation osteotomy according to claim 5, characterized in that: The connection mechanism comprises a fixed sleeve (10) fixedly connected to the outside of the support shell (3), and a piston tube (11) is fixedly passed through the fixed sleeve (10), the inner side of the upper end of the piston tube (11) is seamlessly slidably connected to the lower end of the piston rod (9), and the outer side surface of the support shell (3) where the piston tube (11) is located is opposite to the outer side surface of the support shell (3) where the circular groove (5) is located, and the other two side surfaces of the support shell (3) are axially connected to mounting blocks (24), and each mounting block (24) is connected to two piston tubes (14). The inner side of the open end of the second piston tube (14) is seamlessly slidably connected to one end of the second piston rod (15), and the other end of the second piston rod (15) is axially connected to a U-shaped clamp (2), and the U-shaped clamp (2) is snap-fitted and connected to the reset clamp (1). The lower surface of the support shell (3) is fixedly connected to a Y-shaped air supply pipe (12) through a fixed bracket (13), and the two second piston tubes (14) on the same side are through-connected, and the three open ends of the Y-shaped air supply pipe (12) are respectively through-connected to the first piston tube (11) and the second piston tubes (14) on both sides.

7. The device for measuring the angle of pelvic rotation osteotomy according to claim 6, characterized in that: The two piston tubes (14) connected to each mounting block (24) form a V-shaped structure, which is used to improve the stability of the connection between the support housing (3) and the reset clamp (1).

8. The device for measuring the angle of pelvic rotation osteotomy according to claim 7, characterized in that: The two U-shaped clamps (2) on the same side face upward and downward respectively, and are used to further improve the stability of the connection between the support housing (3) and the reset clamp (1).

9. The device for measuring the angle of pelvic rotation osteotomy according to claim 8, characterized in that: The piston rod 1 (9) is composed of a piston disc and a screw, wherein the piston disc is seamlessly slidably connected to the inner side of the upper end of the piston tube 1 (11), and the piston disc is coaxially bearing-connected to the screw, and the screw thread passes through the upper end of the piston tube 1 (11).

10. The device for measuring the angle of pelvic rotation osteotomy according to claim 9, characterized in that: The buoyancy of all the floating blocks (18) is greater than the total gravity of the structure formed by the compass (7), the connecting block (16), the connecting rod (19) and the limiting ball (20), ensuring that the compass (7) can stably float on the white mineral oil liquid surface in the supporting shell (3).

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