A locking device for sacroiliac joint and sacral unstable fracture

Abstract

The cam is fixedly mounted on the top of the movable frame, and a rotating ball is rotatably mounted on the inner wall of the movable frame. A pin is fixedly mounted on the inner wall of the rotating ball, and a pin is fixedly mounted on the inner wall of the rotating ball. The top of the side plate is evenly provided with a plurality of adjustment holes, and a gear is fixedly mounted on the top of the side plate, and a winding wheel is fixedly mounted on the top of the gear. The winding wheel and the gear are driven to rotate by rotating the protrusion, and the ball can be dragged by the pull rope to move the inner wall of the circular groove to release the lock of 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 gear row, thereby realizing the adjustment of the position of the locking plate, and facilitating the convenient adjustment of the position of the locking plate to lock different positions after the bracket is positioned.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a locking device for sacroiliac joint and unstable fracture of sacrum. BACKGROUND

[0002] The sacroiliac joint is composed of the auricular surface of the ilium and the auricular surface of the sacrum. The joint surface is flat, and the two surfaces fit very closely, which is a plane joint. The joint capsule is tight and adheres to the periphery of the joint surface. There are many strong and tough ligaments around the joint capsule, and the joint cavity is small and slit-like. Therefore, the sacroiliac joint has little mobility, which is beneficial to supporting body weight and transmitting gravity, and further use of the locking device for preventing fracture.

[0003] The existing locking device is inconvenient to adjust the position of the locking plate after installation, and further adjustment of the position of the locking device is required, which is easy to cause multiple injuries to the patient's body and is not conducive to the recovery of the body. Therefore, the present application provides a locking device for sacroiliac joint and unstable fracture of sacrum to solve the above problems. SUMMARY

[0004] The present application provides a locking device for sacroiliac joint and unstable fracture of sacrum, which has the advantages of convenient adjustment, strong practicability and wide application range, and solves the problems raised in the background art.

[0005] The present application provides the following technical scheme: a locking device for sacroiliac joint and unstable fracture of sacrum, comprising a support and a side plate, the inner wall of the support is slidably connected with a vertical stud one, the top of the vertical stud one is fixedly installed with a movable bin one, the inner wall of the movable bin one is rotatably installed with a rotating ball, the inner wall of the rotating ball is fixedly installed with a pin, the top of the side plate is uniformly provided with a plurality of adjusting holes, the top of the side plate is fixedly installed with a gear, the top of the gear is fixedly installed with a winding wheel, the outer edge of the gear is engaged with an arc-shaped toothed row, the bottom of the arc-shaped toothed row is fixedly installed with a sliding strip, the outer side of the sliding strip is fixedly installed with a locking plate, one side of the side plate close to the sliding strip is provided with a sliding groove, the inner wall of the sliding groove is provided with a circular groove, one end of the reset spring is fixedly connected with the inner wall of the circular groove, the other end of the reset spring is fixedly connected with an abutment ball, and the outer edge of the abutment ball is fixedly connected with a pull rope.

[0006] As a preferred technical scheme of the present application, the side surface of the support is movably inserted with a horizontal stud, one end of the horizontal stud close to the vertical stud one is fixedly installed with a positioning tube, the vertical stud one is inserted into the inner wall of the positioning tube, and the vertical stud one is threadedly connected with a nut above the positioning tube and below the support.

[0007] As a preferred technical scheme of the present application, the outer edge of the transverse stud is also threadedly connected with a nut on both sides of the bracket, the inner wall of the bracket is provided with a guide groove, and the vertical stud is slidingly connected to the inner wall of the guide groove.

[0008] As a preferred technical scheme of the present application, the sliding bar is slidingly connected to the inner wall of the sliding groove.

[0009] As a preferred technical scheme of the present application, the pulling rope is fixedly wound on the inner wall of the winding wheel away from one end of the abutting ball, the outer edge of the side plate is provided with a through hole in communication with the circular groove, and the pulling rope is slidingly connected to the inner wall of the through hole.

[0010] As a preferred technical scheme of the present application, the side of the sliding bar close to the side plate is uniformly distributed with a plurality of semicircular clamping grooves matched in size with the abutting ball, one half of the abutting ball is arranged in the inner wall of the circular groove, and the other half is arranged in the semicircular clamping groove.

[0011] As a preferred technical scheme of the present application, the outer edge of the winding wheel is fixedly installed with a plurality of protrusions

[0012] As a preferred technical scheme of the present application, the top of the bracket is provided with a turning groove, and the side plate is slidingly installed in the inner wall of the turning groove.

[0013] As a preferred technical scheme of the present application, the inner wall of the bracket, the gear, the winding wheel and one of the adjusting holes is inserted with a vertical stud two, the top of the vertical stud two is fixedly installed with a movable bin two, the outer edge of the pin is fixedly installed with two rotating balls, and the two rotating balls are rotatably installed in the inner walls of the movable bin one and the movable bin two.

[0014] As a preferred technical scheme of the present application, the outer edge of the vertical stud two is also threadedly installed with two nuts, and the two nuts are respectively located at the bottom of the side plate and above the winding wheel.

[0015] The present application has the following advantages:

[0016] 1. The locking device for sacroiliac joint and sacral unstable fracture, by rotating the protrusions to drive the winding wheel and the gear to rotate, the pulling rope can be used to drag the abutting ball in the inner wall of the circular groove to move, and the locking of the sliding bar is released, and the rotation of the gear can drive the sliding bar in the inner wall of the sliding groove to slide through the arc-shaped tooth row, so that the position of the locking plate can be adjusted, and the position of the locking plate can be conveniently adjusted after the bracket is positioned.

[0017] 2. The locking device for sacroiliac joint and sacral unstable fracture, through the setting of the movable bin one, the movable bin two and the rotating ball, the position of the pin can be conveniently adjusted up and down and left and right, so as to be conveniently and accurately positioned and inserted into different positions, and the vertical stud one, the vertical stud two and the pin can be removed to realize disassembly, thereby the use can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a whole structure schematic diagram of the present application;

[0019] Figure 2 It is a whole structure schematic diagram of the present application;

[0020] Figure 3 It is a turning notch structure schematic diagram of the present application;

[0021] Figure 4 It is a local structure schematic diagram of the present application;

[0022] Figure 5 It is a sliding strip and sliding groove expanded structure schematic diagram of the present application;

[0023] Figure 6 It is a support structure schematic diagram of the present application;

[0024] Figure 7 It is a cross section structure schematic diagram of the present application;

[0025] Figure 8 It is a Figure 7 enlarged structure schematic diagram of A in the present application.

[0026] In the figure: 1, support; 2, vertical stud one; 3, movable bin one; 4, rotating ball; 5, pin; 6, side plate; 7, horizontal stud; 8, positioning tube; 9, nut; 10, vertical stud two; 11, adjusting hole; 12, gear; 13, winding wheel; 14, arc-shaped tooth row; 15, sliding strip; 16, locking plate; 17, sliding groove; 18, circular groove; 19, return spring; 20, abutting ball; 21, pull rope; 22, turning groove; 23, protrusion; 24, movable bin two. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0028] Please refer to Figures 1-8The utility model provides a locking device for sacroiliac joint and sacral unstable fracture, including support 1 and side plate 6, the inner wall sliding connection of support 1 has vertical stud one 2, vertical stud one 2's top fixed mounting has movable bin one 3, movable bin one 3's inner wall rotationally installs the ball 4, the inner wall fixed mounting of ball 4 has the pin 5, the top of side plate 6 is evenly provided with a plurality of adjusting holes 11, the top of side plate 6 is fixedly installed with gear 12, the top of gear 12 is fixedly installed with winding wheel 13, the outer rim of gear 12 is engaged with arc gear rack 14, the bottom of arc gear rack 14 is fixedly installed with slide strip 15, the outer side of slide strip 15 is fixedly installed with locking plate 16, the side of side plate 6 close to slide strip 15 is provided with sliding slot 17, the inner wall of sliding slot 17 is provided with circular groove 18, one end of the inner wall fixed connection of circular groove 18 has reset spring 19, the other end of reset spring 19 is fixedly connected with abutment ball 20, the outer rim of abutment ball 20 is fixedly connected with pull rope 21.

[0029] Referring to Figure 1 Figure 3 As shown in the figure, the side of support 1 is movably inserted with horizontal stud 7, one end of horizontal stud 7 close to vertical stud one 2 is fixedly installed with positioning tube 8, vertical stud one 2 is inserted in the inner wall of positioning tube 8, and the upper side of vertical stud one 2 is extended outside positioning tube 8 and the lower side of support 1 is both threadedly connected with nut 9, so that the movable horizontal stud 7 can move in the inner wall of support 1, the position of positioning tube 8 is adjusted, the position of vertical stud one 2 is moved and adjusted, and the horizontal stud 7 is locked by the two nuts 9, so that the horizontal stud 7 can be stably arranged in the inner wall of support 1.

[0030] Referring to Figure 2 and Figure 3 As shown in the figure, the outer rim of horizontal stud 7 is located on both sides of support 1 and is also threadedly connected with nut 9, the inner wall of support 1 is provided with a guide groove, and vertical stud one 2 is slidingly connected to the inner wall of the guide groove, so that when the horizontal stud 7 is moved in the inner wall of support 1, the positioning tube 8 can drive the vertical stud one 2 to move in the inner wall of the guide groove, and the inclination can be adjusted.

[0031] Referring to Figure 5 As shown in the figure, the slide strip 15 is slidingly connected to the inner wall of the sliding slot 17, so that when the gear 12 rotates, the arc gear rack 14 can be moved, the arc gear rack 14 in movement is limited by the slide strip 15, the stability of the arc gear rack 14 in movement is ensured, and the position of the locking plate 16 can be adjusted in time.

[0032] Referring to Figure 5 and Figure 7 ​As shown, the end of the pull rope 21 away from the abutting ball 20 is fixedly wound on the inner wall of the winding wheel 13, the outer edge of the side plate 6 is provided with a through hole communicating with the circular groove 18, and the pull rope 21 is slidingly connected to the inner wall of the through hole, so that the winding wheel 13 can wind the pull rope 21 to the inner wall of the winding wheel 13 when rotating, thereby dragging the abutting ball 20 to move on the inner wall of the circular groove 18, realizing position movement, and the through hole can prevent the pull rope 21 from interfering with the side plate 6 during winding.

[0033] Referring to Figure 5 and Figure 8 As shown, the side of the slide bar 15 close to the side plate 6 is uniformly distributed with a plurality of semicircular clamping grooves matched with the size of the abutting ball 20, one half of the abutting ball 20 is arranged on the inner wall of the circular groove 18, and the other half is arranged in the semicircular clamping groove, so that the slide bar 15 can be stably positioned on the inner wall of the sliding groove 17 by using one half of the abutting ball 20 to cooperate with the semicircular clamping groove, and the slide bar 15 can be prevented from being displaced at will.

[0034] Referring to Figure 5 As shown, the outer edge of the winding wheel 13 is fixedly installed with a plurality of protrusions 23, which improves the convenience of the user when rotating the winding wheel 13, thereby facilitating the user's hand force.

[0035] Referring to Figure 3 As shown, the top of the bracket 1 is provided with a turning groove 22, and the side plate 6 is slidingly installed on the inner wall of the turning groove 22, so that the side plate 6 and the bracket 1 can be stably connected and installed, and the combination can be prevented from easily shaking, thereby ensuring the adhesion.

[0036] Referring to Figure 1 and Figure 2 As shown, the inner wall of the bracket 1, the gear 12, the winding wheel 13 and one of the adjusting holes 11 is inserted with a vertical stud two 10, the top of the vertical stud two 10 is fixedly installed with a movable bin two 24, the outer edge of the pin 5 is fixedly installed with two rotating balls 4, and the two rotating balls 4 are respectively rotatably installed on the inner walls of the movable bin one 3 and the movable bin two 24, so that the pin 5 can be further positioned, the pin 5 can be adjusted in position by being shaken up and down and left and right at will, thereby facilitating accurate positioning and insertion into different positions.

[0037] Referring to Figure 1 and Figure 2 As shown, the outer edge of the vertical stud two 10 is also threadedly installed with two nuts 9, 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 two 10 can be stably positioned on the inner wall of the bracket 1, the gear 12, the winding wheel 13 and the adjusting hole 11, thereby ensuring the stability of the positioning, and preventing the vertical stud two 10 from shaking at will when the user adjusts the angle and position of the pin 5.

[0038] The working principle is that first, the support 1 can be fixed outside the patient's body, and the height of the pin 5 can be adjusted by rotating the nuts 9 on both sides of the vertical stud 1 and the vertical stud 2, then the convex 23 is rotated to drive the winding wheel 13 and the gear 12 to rotate, and then the ball 20 at the circular groove 18 is moved by the pulling rope 21, and the gear 12 is rotated to drive the sliding strip 15 to slide in the sliding groove 17 through the arc-shaped toothed row 14, so as to adjust the position of the locking plate 16, and then the position of the locking plate 16 is adjusted after the support 1 is positioned, and different positions are locked, and the pin 5 can be rotated to make the rotating ball 4 rotate in the inner wall of the movable bin 1, and then the position of the pin 5 can be conveniently adjusted up, down, left and right, so as to be accurately positioned and inserted into different positions.

[0039] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any actual relationship or order between or among such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0040] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A locking device for unstable fractures of the 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), 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), the top of the side plate (6) is evenly provided with a plurality of adjustment holes (11), the top of the side plate (6) is fixedly installed with a gear (12), the top of the gear (12) is fixedly installed with a winding wheel (13), the outer edge of the gear (12) is meshed with an arc-shaped tooth row (14), the bottom of the arc-shaped tooth row (14) is fixedly installed with a slide bar (15), the 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), the other end of the return spring (19) is fixedly connected to a contact ball (20), the outer edge of the contact ball (20) is fixedly connected to a pull rope (21), a horizontal stud (7) is movably inserted on the side of the bracket (1), a positioning tube (8) is fixedly installed on one end of the horizontal stud (7) close to the vertical stud (2), and the vertical stud (2 ) is inserted into the inner wall of the positioning tube (8), the vertical stud (2) is located above the positioning tube (8) and below the bracket (1) and is threadedly connected to a nut (9), the outer edge of the horizontal stud (7) is located on both sides of the bracket (1) and is also threadedly connected to a nut (9), the inner wall of the bracket (1) is provided with a guide groove, the vertical stud (2) is slidably connected to the inner wall of the guide groove, the slide (15) is adapted to be slidably connected to the inner wall of the slide groove (17), the end of the pull rope (21) away from the abutment ball (20) is fixedly wound around the inner wall of the reel (13), the outer edge of the side plate (6) is provided with a through hole that is aligned with the circular groove (18) The pull rope (21) is slidably connected to the inner wall of the through hole, and 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 the top of the vertical stud 2 (10) is fixedly installed with a movable warehouse 2 (24), and the outer edge of the pin (5) is fixedly installed with two rotating balls (4), and the two rotating balls (4) are respectively rotatably installed on the inner walls of the movable warehouse 1 (3) and the movable warehouse 2 (24), and the outer edge of the vertical stud 2 (10) is also threadedly installed with two nuts (9), and the two nuts (9) are respectively located at the bottom of the side plate (6) and above the winding wheel (13).

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

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

4. The locking device for unstable sacroiliac joint and sacral fractures 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).

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