Locking device for sacroiliac joint and sacrum unstable fractureTechnical Field
The invention relates to the technical field of medical appliances, in particular to a locking device for sacroiliac joint and unstable fracture of sacrum.
Background
The sacroiliac joint is composed of the auricular surface of the ilium and the auricular surface of the sacrum. The joint surfaces are flat and very tightly combined, the joint surfaces belong to plane joints, the joint bags are tense and are tightly attached to the periphery of the joint surfaces, a plurality of tough ligaments are arranged around the joint surfaces for reinforcement, the joint cavities are narrow and slit-shaped, so that the mobility of the sacroiliac joints is very small, the weight is supported and the gravity is transmitted, and further, a locking device for preventing fracture can be used.
The prior locking device is inconvenient to adjust the position of the locking plate after being installed, and the position of the locking device needs to be adjusted repeatedly, so that the body of a patient is easy to be damaged multiple times, and the body is not easy to recover.
Disclosure of Invention
The invention provides a locking device for sacroiliac joint and sacrum unstable fracture, which has the advantages of convenient adjustment, strong practicability and wide application range, and solves the problems set forth in the background technology.
The invention provides a locking device for sacroiliac joints and sacrum unstable fracture, which comprises a bracket and a side plate, wherein the inner wall of the bracket is connected with a first vertical stud in a sliding manner, the top of the first vertical stud is fixedly provided with a first movable bin, the inner wall of the first movable bin is rotatably provided with a rotary ball, the inner wall of the rotary ball is fixedly provided 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 provided with a gear, the top of the gear is fixedly provided with a winding wheel, the outer edge of the gear is meshed with an arc-shaped tooth row, the bottom of the arc-shaped tooth row is fixedly provided with a sliding strip, the outer side of the sliding strip is fixedly provided with a locking plate, one side of the side plate, which is close to the sliding strip, is provided with a circular groove, the inner wall of the circular groove is fixedly connected with one end of a reset spring, the other end of the reset spring is fixedly connected with a butt ball, and the outer edge of the butt ball is fixedly connected with a pull rope.
As a preferable technical scheme of the invention, a transverse stud is movably inserted on the side surface of the bracket, a positioning pipe is fixedly arranged at one end of the transverse stud close to the first vertical stud, the first vertical stud is inserted on the inner wall of the positioning pipe, and nuts are connected with the outer side of the first vertical stud and the lower side of the bracket in a threaded manner.
As a preferable technical scheme of the invention, nuts are also connected with the outer edges of the transverse studs on two sides of the support in a threaded manner, guide grooves are formed in the inner wall of the support, and the vertical studs are connected with the inner wall of the guide grooves in a sliding manner.
As a preferable technical scheme of the invention, the sliding strip is adapted to be connected to the inner wall of the sliding groove in a sliding manner.
As a preferable technical scheme of the invention, one end of the pull rope far away from the abutting ball is fixedly wound on the inner wall of the winding wheel, the outer edge of the side plate is provided with a through hole which is communicated with the circular groove, and the pull rope is connected to the inner wall of the through hole in a sliding way.
As a preferable technical scheme of the invention, a plurality of semicircular clamping grooves matched with the sizes of the abutting balls are uniformly distributed on one side, close to the side plates, of the sliding strips, one half of the abutting balls are arranged on the inner wall of the circular groove, and the other half of the abutting balls are arranged in the semicircular clamping grooves.
As a preferable technical scheme of the invention, a plurality of bulges are fixedly arranged on the outer edge of the winding wheel
As a preferable technical scheme of the invention, the top of the bracket is provided with a steering groove, and the side plate is slidably arranged on the inner wall of the steering groove.
As a preferable technical scheme of the invention, the inner walls of the bracket, the gear, the winding wheel and one of the regulating holes are inserted with a second vertical stud, the top of the second vertical stud is fixedly provided with a second movable bin, the outer edge of the pin is fixedly provided with two rotating balls, and the two rotating balls are respectively and rotatably arranged on the inner walls of the first movable bin and the second movable bin.
As a preferable technical scheme of the invention, the outer edge of the second vertical stud is also provided with two nuts in a threaded manner, and the two nuts are respectively positioned at the bottom of the side plate and above the winding wheel.
The invention has the following beneficial effects:
1. This a locking device for unstable fracture of sacroiliac joint and sacrum drives rolling wheel and gear through rotating the arch, and then the accessible stay cord drags the inner wall that the butt ball is in the circular slot and removes, releases the locking to the draw runner, and the gear rotates the accessible arc tooth row simultaneously and drives the draw runner and be in the inner wall slip of spout to realize the regulation of locking plate position, and then be convenient for conveniently locking the position adjustment of locking plate position to different positions after the support location.
2. This a locking device for sacroiliac joint and unstable fracture of sacrum makes can be convenient to adjust the pin upper and lower side-to-side swing pair position through setting up movable storehouse first, movable storehouse second and swivel ball to be convenient for accurate location grafting to different positions, and remove the nut and remove vertical double-screw bolt first and vertical double-screw bolt second and pin and realize dismantling, and then can improve the usage.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the expanded structure of the present invention;
FIG. 3 is a schematic view of a turning notch structure according to the present invention;
FIG. 4 is a schematic view of a partial structure of the present invention;
FIG. 5 is a schematic view of the slide and chute deployment configuration of the present invention;
FIG. 6 is a schematic view of a stent structure according to the present invention;
FIG. 7 is a schematic cross-sectional view of the present invention;
fig. 8 is an enlarged schematic view of the structure of fig. 7 a according to the present invention.
The device comprises a first movable bin 1, a bracket 2, a first vertical stud, a first movable bin 4, a rotating ball 5, a pin, a second side plate 6, a first transverse stud 7, a second transverse stud 8, a positioning pipe 9, a nut 10, a second vertical stud 11, an adjusting hole 12, a gear 13, a winding wheel 14, an arc-shaped tooth row 15, a sliding strip 16, a locking plate 17, a sliding chute 18, a circular groove 19, a return spring 20, an abutting ball 21, a pull rope 22, a steering groove 23, a protrusion 24 and a second movable bin.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-8, a locking device for sacroiliac joint and sacrum unstable fracture comprises a bracket 1 and a side plate 6, wherein the inner wall of the bracket 1 is in sliding connection with a vertical stud 2, the top of the vertical stud 2 is fixedly provided with a movable bin 3, the inner wall of the movable bin 3 is rotatably provided with a rotary ball 4, the inner wall of the rotary ball 4 is fixedly provided with a pin 5, the top of the side plate 6 is uniformly provided with a plurality of adjusting holes 11, the top of the side plate 6 is fixedly provided with a gear 12, the top of the gear 12 is fixedly provided 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 provided with a sliding bar 15, the outer side of the sliding bar 15 is fixedly provided with a locking plate 16, one side of the side plate 6, which is close to the sliding bar 15, the inner wall of the sliding bar 17 is provided with a circular groove 18, the inner wall of the circular groove 18 is fixedly connected with one end of a reset spring 19, the other end of the reset spring 19 is fixedly connected with a butting ball 20, and the outer edge of the butting ball 20 is fixedly connected with a pull rope 21.
Referring to fig. 1-3, a transverse stud 7 is movably inserted on the side surface of the support 1, a positioning tube 8 is fixedly installed at one end, close to the vertical stud 2, of the transverse stud 7, the vertical stud 2 is inserted on the inner wall of the positioning tube 8, nuts 9 are connected to the upper portion of the positioning tube 8 and the lower portion of the support 1 in a threaded mode, the slidable transverse stud 7 is located on the inner wall of the support 1 and can be adjusted in position, the position of the positioning tube 8 can be adjusted in a moving mode, meanwhile, the transverse stud 7 can be locked through the two nuts 9, and the inner wall of the support 1 can be stably arranged.
Referring to fig. 2 and 3, nuts 9 are also screwed on the outer edges of the transverse studs 7 on two sides of the support 1, a guide groove is formed in the inner wall of the support 1, the vertical stud 2 is slidably connected to the inner wall of the guide groove, and when the transverse stud 7 is pushed to move on the inner wall of the support 1, the positioning tube 8 can drive the vertical stud 2 to move on the inner wall of the guide groove, so that inclination adjustment can be achieved.
Referring to fig. 5, the sliding strip 15 is adapted to be slidably connected to an inner wall of the sliding groove 17, so that the gear 12 can drive the arc-shaped tooth row 14 to move when rotating, and further the moving arc-shaped tooth row 14 can be limited by the sliding strip 15, so that the stability of the sliding strip in moving can be ensured, and the position of the locking plate 16 can be adjusted in time.
Referring to fig. 5 and 7, one end of the pull rope 21 far away from the abutting ball 20 is fixedly wound on the inner wall of the winding wheel 13, a through hole is formed in the outer edge of the side plate 6 and is communicated with the circular groove 18, the pull rope 21 is slidably connected to the inner wall of the through hole, so that the pull rope 21 can be wound on the inner wall of the winding wheel 13 when the winding wheel 13 rotates, the abutting ball 20 can be dragged to move on the inner wall of the circular groove 18, position movement is achieved, and the pull rope 21 can be guaranteed not to interfere with the side plate 6 in the winding process by the aid of the arranged through hole.
Referring to fig. 5 and 8, a plurality of semicircular clamping grooves matched with the sizes of the abutting balls 20 are uniformly distributed on one side of the sliding strip 15 close to the side plate 6, one half of the abutting balls 20 is arranged on the inner wall of the circular groove 18, and the other half of the abutting balls are arranged in the semicircular clamping grooves, so that the sliding strip 15 can be stably positioned on the inner wall of the sliding groove 17 by utilizing one half of the abutting balls 20 to be matched with the semicircular clamping grooves, and the sliding strip is prevented from being randomly shifted.
Referring to fig. 5, a plurality of protrusions 23 are fixedly mounted on the outer edge of the winding wheel 13, so that convenience of a user in rotating the winding wheel 13 is improved, and further, the force exerted by the hand of the user is facilitated.
Referring to fig. 3, a steering groove 22 is formed in the top of the bracket 1, and the side plate 6 is slidably mounted on the inner wall of the steering groove 22, so that the side plate 6 and the bracket 1 can be firmly connected and mounted, the combination of the side plate 6 and the bracket 1 is prevented from shaking easily, and the fit of the bracket is ensured.
Referring to fig. 1 and 2, the inner walls of the bracket 1, the gear 12, the winding wheel 13 and one of the adjusting holes 11 are inserted with a second vertical stud 10, the top of the second vertical stud 10 is fixedly provided with a second movable bin 24, the outer edge of the pin 5 is fixedly provided with two rotary balls 4, and the two rotary balls 4 are respectively rotatably arranged on the inner walls of the first movable bin 3 and the second movable bin 24, so that the pin 5 can be further positioned, the pin 5 can be ensured to randomly swing up and down and left and right to adjust the position, and accurate positioning and insertion to different positions are facilitated.
Referring to fig. 1 and 2, two nuts 9 are also installed on the outer edge of the second vertical stud 10 in a threaded manner, 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 second vertical stud 10 can be stably positioned on the inner walls of the bracket 1, the gear 12, the winding wheel 13 and the adjusting hole 11, stability in positioning can be further ensured, and a user is ensured that the second vertical stud 10 cannot shake randomly when adjusting the angle of the pin 5.
The working principle is that the bracket 1 can be fixed on the outer side of the body of a patient, the nuts 9 on the upper side and the lower side of the first vertical stud 2 and the second vertical stud 10 can be used for adjusting the height of the pin 5, then the rotary bulge 23 can drive the winding wheel 13 and the gear 12 to rotate, the stay rope 21 can be utilized to drag the inner wall of the abutting ball 20 in the circular groove 18 to move, meanwhile, the gear 12 rotates to drive the sliding bar 15 to slide on the inner wall of the sliding groove 17 through the arc-shaped tooth row 14, so that the position of the locking plate 16 is adjusted, the position of the locking plate 16 can be conveniently adjusted after the bracket 1 is positioned to lock different positions, the pin 5 can be rotated to enable the rotary ball 4 to rotate on the inner wall of the first movable bin 3, and then the pin 5 can be conveniently adjusted in a vertical and horizontal swinging mode, and accurate positioning is conveniently spliced to different positions.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation 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 may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.