Locking device for unstable fracture of sacroiliac joint and sacrum

Abstract

The invention relates to the technical field of medical instruments, and discloses a locking device for unstable sacroiliac joint and sacrum fracture.The locking device comprises a support and a side plate, the inner wall of the support is slidably connected with a first vertical stud, the top of the first vertical stud is fixedly provided with a first movable bin, and the inner wall of the first movable bin is rotatably provided with a rotating ball; a pin is fixedly installed on the inner wall of the rotating ball, a plurality of adjusting holes are evenly formed in the top of the side plate, a gear is fixedly installed on the top of the side plate, and a winding wheel is fixedly installed on the top of the gear. A rolling wheel and a gear are driven to rotate by rotating a protrusion, then a pull rope can be used for dragging an abutting ball to move on the inner wall of a circular groove, locking of a sliding strip is relieved, meanwhile, the gear rotates to drive the sliding strip to slide on the inner wall of a sliding groove through an arc-shaped tooth row, and therefore the position of a locking plate is adjusted; and therefore, after the bracket is positioned, the position of the locking plate can be conveniently adjusted to lock different positions.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a locking device for unstable fractures of sacroiliac joints and sacrum. Background Art

[0002] The sacroiliac joint is composed of the auricular surface of the ilium and the auricular surface of the sacrum. The articular surfaces are flat and fit closely together. They are plane joints. The joint capsule is tight and close to the periphery of the articular surface. There are many strong ligaments around it to strengthen it. The joint cavity is narrow and fissure-shaped. Therefore, the sacroiliac joint has little mobility, which is conducive to supporting body weight and transmitting gravity, and then a locking device is used to prevent fractures.

[0003] The existing locking device is not convenient for adjusting the position of its locking plate after installation, and the position of the locking device needs to be adjusted repeatedly, which can easily cause multiple injuries to the patient's body and is not conducive to physical recovery. For this reason, the present application proposes a locking device for unstable fractures of the sacroiliac joint and sacrum to solve the above problems. Summary of the invention

[0004] The present invention provides a locking device for sacroiliac joint and sacral unstable fractures, which has the advantages of convenient adjustment, strong practicality and wide application range, and solves the problems raised by the above-mentioned background technology.

[0005] The present invention provides the following technical solution: a locking device for unstable fractures of sacroiliac joint and sacrum, comprising a bracket and a side plate, the inner wall of the bracket being slidably connected with a vertical stud one, the top of the vertical stud one being fixedly installed with a movable warehouse one, the inner wall of the movable warehouse one being rotatably installed with a rotating ball, the inner wall of the rotating ball being fixedly installed with a pin, the top of the side plate being evenly provided with a plurality of adjustment holes, the top of the side plate being fixedly installed with a gear, the top of the gear being fixedly installed with a winding wheel, the outer edge of the gear being meshed with an arc-shaped tooth row, the bottom of the arc-shaped tooth row being fixedly installed with a sliding strip, the outer side of the sliding strip being fixedly installed with a locking plate, the side of the side plate close to the sliding strip being provided with a sliding groove, the inner wall of the sliding groove being provided with a circular groove, one end of a reset spring being fixedly connected to the inner wall of the circular groove, the other end of the reset spring being fixedly connected with an abutting ball, and the outer edge of the abutting ball being fixedly connected with a pull rope.

[0006] As a preferred technical solution of the present invention, a horizontal stud is movably inserted on the side of the bracket, and a positioning tube is fixedly installed on the end of the horizontal stud close to the vertical stud one, and the vertical stud one is inserted into the inner wall of the positioning tube, and the vertical stud one is extended and located above the positioning tube and below the bracket, and nuts are threadedly connected.

[0007] As a preferred technical solution of the present invention, the outer edges of the horizontal studs are also threadedly connected with nuts on both sides of the bracket, the inner wall of the bracket is provided with a guide groove, and the vertical studs are slidably connected to the inner wall of the guide groove.

[0008] As a preferred technical solution of the present invention, the slide bar is adapted to be slidably connected to the inner wall of the slide groove.

[0009] As a preferred technical solution of the present invention, one end of the pull rope away from the abutment ball is fixedly wound around the inner wall of the winding wheel, a through hole is opened on the outer edge of the side plate and communicates with the circular groove, and the pull rope is slidably connected to the inner wall of the through hole.

[0010] As a preferred technical solution of the present invention, a plurality of semicircular grooves matching the size of the abutment balls are evenly distributed on one side of the slide bar close to the side plate, half of the abutment balls are arranged on the inner wall of the circular grooves, and the other half are arranged in the semicircular grooves.

[0011] As a preferred technical solution of the present invention, the outer edge of the winding wheel is fixedly mounted with a plurality of protrusions. As a preferred technical solution of the present invention, a steering groove is provided on the top of the bracket, and the side panels are slidably mounted on the inner wall of the steering groove.

[0012] As a preferred technical solution of the present invention, a vertical stud 2 is inserted into the inner wall of the bracket, gear, winding wheel and one of the adjustment holes, a movable warehouse 2 is fixedly installed on the top of the vertical stud 2, two rotating balls are fixedly installed on the outer edge of the pin, and the two rotating balls are rotatably installed on the inner walls of the movable warehouse 1 and the movable warehouse 2 respectively.

[0013] As a preferred technical solution of the present invention, two nuts are also threadedly installed on the outer edge of the second vertical stud, and the two nuts are respectively located at the bottom of the side plate and above the winding wheel.

[0014] The present invention has the following beneficial effects: 1. This locking device for unstable fractures of the sacroiliac joint and sacrum drives the winding wheel and the gear to rotate by rotating the protrusion, and then the inner wall of the circular groove can be dragged by the pull rope to move the abutment ball to release the lock on the slide bar. At the same time, the rotation of the gear can drive the slide bar to slide on the inner wall of the slide groove through the arc-shaped tooth row, thereby adjusting the position of the locking plate, and then facilitating the convenient adjustment of the position of the locking plate to lock different positions after the bracket is positioned.

[0015] 2. This locking device for unstable fractures of the sacroiliac joint and sacrum can conveniently adjust the position of the pin by swinging it up and down, left and right, by providing movable bin 1, movable bin 2 and a rotating ball, so as to facilitate accurate positioning and insertion into different positions, and by removing the nut, the vertical stud 1, vertical stud 2 and the pin can be removed for disassembly, thereby improving the use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the present invention; Figure 3 This is a schematic diagram of the steering notch structure of the present invention; Figure 4 It is a schematic diagram of the local structure of the present invention; Figure 5 This is a schematic diagram of the expanded structure of the slide bar and the slide groove of the present invention; Figure 6 This is a schematic diagram of the support structure of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged structural diagram at A in the middle.

[0017] In the figure: 1. bracket; 2. vertical stud 1; 3. movable bin 1; 4. rotating ball; 5. pin; 6. side plate; 7. horizontal stud; 8. positioning tube; 9. nut; 10. vertical stud 2; 11. adjustment hole; 12. gear; 13. winding wheel; 14. arc-shaped gear row; 15. slide bar; 16. locking plate; 17. slide groove; 18. circular groove; 19. reset spring; 20. abutment ball; 21. pull rope; 22. steering groove; 23. protrusion; 24. movable bin 2. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-8A locking device for unstable fractures of sacroiliac joint and sacrum comprises a bracket 1 and a side plate 6, the inner wall of the bracket 1 is slidably connected with a vertical stud 2, the top of the vertical stud 2 is fixedly installed with a movable warehouse 3, the inner wall of the movable warehouse 3 is rotatably installed with a rotating ball 4, the inner wall of the rotating ball 4 is fixedly installed with a pin 5, a plurality of adjustment holes 11 are evenly provided on the top of the side plate 6, a gear 12 is fixedly installed on the top of the side plate 6, a winding wheel 13 is fixedly installed on the top of the gear 12, an arc-shaped tooth row 14 is meshed on the outer edge of the gear 12, a slide bar 15 is fixedly installed on the bottom of the arc-shaped tooth row 14, a locking plate 16 is fixedly installed on the outer side of the slide bar 15, a slide groove 17 is provided on the side of the side plate 6 close to the slide bar 15, a circular groove 18 is provided on the inner wall of the slide groove 17, one end of a return spring 19 is fixedly connected to the inner wall of the circular groove 18, a contact ball 20 is fixedly connected to the other end of the return spring 19, and a pull rope 21 is fixedly connected to the outer edge of the contact ball 20.

[0020] See also Figure 1 - Figure 3 As shown, a transverse stud 7 is movably inserted into the side of the bracket 1, and a positioning tube 8 is fixedly installed at one end of the transverse stud 7 close to the vertical stud 2. The vertical stud 2 is inserted into the inner wall of the positioning tube 8, and nuts 9 are threadedly connected to the upper part of the positioning tube 8 and the lower part of the bracket 1, so that the slidable transverse stud 7 is located on the inner wall of the bracket 1 to adjust the position of the positioning tube 8, thereby adjusting the position of the vertical stud 2. At the same time, two nuts 9 are used to lock the transverse stud 7 to ensure that it can be stably set on the inner wall of the bracket 1.

[0021] See also Figure 2 and Figure 3 As shown, the outer edges of the transverse studs 7 are located on both sides of the bracket 1 and are also threadedly connected with nuts 9, the inner wall of the bracket 1 is provided with a guide groove, and the vertical stud 2 is slidably connected to the inner wall of the guide groove, so that when the transverse stud 7 is pushed to move on the inner wall of the bracket 1, the positioning tube 8 can drive the vertical stud 2 to move on the inner wall of the guide groove, thereby realizing the inclination adjustment.

[0022] See also Figure 5 As shown, the slide bar 15 is adapted to be slidably connected to the inner wall of the slide groove 17, so that the gear 12 can drive the arc-shaped tooth row 14 to move when it rotates, and then the slide bar 15 can be used to limit the moving arc-shaped tooth row 14 to ensure its stability during movement, so that the position of the locking plate 16 can be adjusted in time.

[0023] See also Figure 5 and Figure 7As shown, one end of the pull rope 21 away from the abutment ball 20 is fixedly wound around the inner wall of the winding wheel 13, and a through hole is provided on the outer edge of the side plate 6 to communicate with the circular groove 18. The pull rope 21 is slidably connected to the inner wall of the through hole, so that the winding wheel 13 can reel the pull rope 21 to the inner wall of the winding wheel 13 when it rotates, and then drag the abutment ball 20 to move on the inner wall of the circular groove 18 to achieve position movement, and the through hole can be used to ensure that the pull rope 21 will not interfere with the side plate 6 during the winding process.

[0024] See also Figure 5 and Figure 8 As shown, a plurality of semicircular grooves matching the size of the abutment ball 20 are evenly distributed on one side of the slide bar 15 close to the side plate 6, half of the abutment ball 20 is arranged on the inner wall of the circular groove 18, and the other half is arranged in the semicircular groove, so that the slide bar 15 can be stably positioned on the inner wall of the slide groove 17 by using half of the abutment ball 20 in conjunction with the semicircular groove to ensure that it will not shift at will.

[0025] See also Figure 5 As shown, a plurality of protrusions 23 are fixedly mounted on the outer edge of the winding wheel 13, which improves the convenience of the user when rotating the winding wheel 13 and makes it easier for the user to exert force with his hand.

[0026] See also Figure 3 As shown, a steering groove 22 is provided at the top of the bracket 1, and the side panel 6 is slidably installed on the inner wall of the steering groove 22, so that the side panel 6 and the bracket 1 can be firmly connected and installed, ensuring that they will not shake easily after being combined, thereby ensuring their fit.

[0027] See also Figure 1 and Figure 2 As shown, the bracket 1, the gear 12, the winding wheel 13 and the inner wall of one of the adjustment holes 11 are plugged with a vertical stud 2 10, and a movable bin 2 24 is fixedly installed on the top of the vertical stud 2 10. Two rotating balls 4 are fixedly installed on the outer edge of the pin 5, and the two rotating balls 4 are rotatably installed on the inner walls of the movable bin 1 3 and the movable bin 2 24, respectively, so that the pin 5 can be further positioned to ensure that the pin 5 can be swung up and down and left and right at will to adjust the position, thereby facilitating accurate positioning and insertion into different positions.

[0028] See also Figure 1 and Figure 2 As shown, two nuts 9 are also threadedly installed on the outer edge of the vertical stud 10, and the two nuts 9 are respectively located at the bottom of the side plate 6 and above the winding wheel 13, so that the vertical stud 10 can be stably positioned on the bracket 1, the gear 12, the winding wheel 13 and the inner wall of the adjustment hole 11, thereby ensuring its stability during positioning and ensuring that the vertical stud 10 will not shake at will when the user adjusts the angle of the pin 5.

[0029] Working principle: first, the bracket 1 can be fixed to the outside of the patient's body, and the height of the pin 5 can be adjusted by rotating the nuts 9 on the upper and lower sides of the vertical stud 1 2 and the vertical stud 2 10, and then the protrusion 23 can be rotated to drive the winding wheel 13 and the gear 12 to rotate, and then the pull rope 21 can be used to drag the contact ball 20 to move on the inner wall of the circular groove 18, and at the same time, the gear 12 rotates through the arc-shaped tooth row 14 to drive the slide bar 15 to slide on the inner wall of the slide groove 17, thereby realizing the adjustment of the position of the locking plate 16, and then it is convenient to adjust the position of the locking plate 16 to lock different positions after the bracket 1 is positioned, and the pin 5 can be rotated so that the rotating ball 4 can be rotated on the inner wall of the movable warehouse 1 3, and then the pin 5 can be conveniently swung up and down and left and right to adjust the position, so as to facilitate accurate positioning and insertion to different positions.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] 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 locking device for unstable fractures of sacroiliac joint and sacrum, comprising a bracket (1) and a side plate (6), characterized in that: The inner wall of the bracket (1) is slidably connected with a vertical stud (2), a movable bin (3) is fixedly mounted on the top of the vertical stud (2), a rotating ball (4) is rotatably mounted on the inner wall of the movable bin (3), a pin (5) is fixedly mounted on the inner wall of the rotating ball (4), a plurality of adjustment holes (11) are evenly arranged on the top of the side plate (6), a gear (12) is fixedly mounted on the top of the side plate (6), a winding wheel (13) is fixedly mounted on the top of the gear (12), and an arc-shaped tooth meshing is provided on the outer edge of the gear (12). The arc-shaped tooth row (14) is fixedly provided with a slide bar (15) at the bottom, a locking plate (16) is fixedly provided on the outer side of the slide bar (15), a slide groove (17) is provided on the side of the side plate (6) close to the slide bar (15), a circular groove (18) is provided on the inner wall of the slide groove (17), one end of a return spring (19) is fixedly connected to the inner wall of the circular groove (18), the other end of the return spring (19) is fixedly connected to an abutment ball (20), and the outer edge of the abutment ball (20) is fixedly connected to a pull rope (21).

2. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 1, characterized in that: A transverse stud (7) is movably inserted into the side of the bracket (1); a positioning tube (8) is fixedly installed at one end of the transverse stud (7) close to the vertical stud one (2); the vertical stud one (2) is inserted into the inner wall of the positioning tube (8); and nuts (9) are threadedly connected to the upper part of the positioning tube (8) and the lower part of the bracket (1) extending from the vertical stud one (2).

3. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 2, characterized in that: The outer edges of the transverse studs (7) are located on both sides of the bracket (1) and are also threadedly connected with nuts (9). The inner wall of the bracket (1) is provided with a guide groove, and the vertical stud one (2) is slidably connected to the inner wall of the guide groove.

4. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 1, characterized in that: The slide bar (15) is adapted to be slidably connected to the inner wall of the slide groove (17).

5. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 1, characterized in that: One end of the pull rope (21) away from the abutment ball (20) is fixedly wound around the inner wall of the reel (13); a through hole is provided on the outer edge of the side plate (6) and communicates with the circular groove (18); the pull rope (21) is slidably connected to the inner wall of the through hole.

6. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 1, characterized in that: A plurality of semicircular grooves matching the size of the abutment ball (20) are evenly distributed on one side of the slide bar (15) close to the side plate (6); half of the abutment ball (20) is arranged on the inner wall of the circular groove (18), and the other half is arranged in the semicircular groove.

7. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 1, characterized in that: A plurality of protrusions (23) are fixedly mounted on the outer edge of the winding wheel (13).

8. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 1, characterized in that: A steering groove (22) is provided on the top of the bracket (1), and the side plate (6) is slidably mounted on the inner wall of the steering groove (22).

9. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 1, characterized in that: The bracket (1), the gear (12), the winding wheel (13) and the inner wall of one of the adjustment holes (11) are plugged with a second vertical stud (10), a second movable bin (24) is fixedly mounted on the top of the second vertical stud (10), two rotating balls (4) are fixedly mounted on the outer edge of the pin (5), and the two rotating balls (4) are rotatably mounted on the inner walls of the first movable bin (3) and the second movable bin (24), respectively.

10. A locking device for unstable fractures of sacroiliac joint and sacrum according to claim 9, characterized in that: Two nuts (9) are also threadedly mounted on the outer edge of the second vertical stud (10), and the two nuts (9) are respectively located at the bottom of the side plate (6) and above the winding wheel (13).

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