CN217793279U - Fracture traction reduction mechanism - Google Patents

Abstract

The utility model relates to a fracture traction reduction gears, pull subassembly and adjusting part including guide, first subassembly, second of pulling. Wherein, one end of the guide piece is provided with a first connecting piece which is provided with a first connecting through hole; the first traction assembly is connected with the guide piece; the second traction assembly is in guiding fit with the guide piece, a threaded hole is formed in the second traction assembly, and the second traction assembly can move along the axial direction of the guide piece; the adjusting component comprises an adjusting rod, and the adjusting rod penetrates through the first connecting through hole and is in threaded fit with the threaded hole. The guide piece, the first traction assembly, the second traction assembly and the adjustment rod are matched, and the position with the fracture can be pulled and stretched only by rotating the adjustment rod, so that the operation and the use are convenient.

Description

Fracture traction reduction mechanism

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a fracture pulls canceling release mechanical system.

Background

With the continuous development of medical technology, more and more medical instruments are used for various diseases or pains. For example, when a fracture occurs, the fracture site needs to be reduced by traction with the fracture traction reduction mechanism, so as to avoid the fracture site from growing into a malformation. In the prior art, in related documents, a screw rod and a sliding nut are adopted to be matched to drive a traction device to move so as to play a traction role in a restorer, but the mechanism is complex, the angle of a fixing device cannot be adjusted, and in addition, other technologies adopt a traction restoration method, but the defects of complex structure and single function exist.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a fracture traction reduction mechanism for solving the problem of inconvenient use.

The technical scheme is as follows:

in one aspect, a fracture traction reduction mechanism is provided, comprising:

the guide piece is provided with a first connecting piece at one end, and the first connecting piece is provided with a first connecting through hole;

a first pulling assembly connected to the guide;

the second traction assembly is in guiding fit with the guide piece, a threaded hole is formed in the second traction assembly, and the second traction assembly can move along the axial direction of the guide piece; and

the adjusting assembly comprises an adjusting rod, and the adjusting rod penetrates through the first connecting through hole and is in threaded fit with the threaded hole.

When the fracture traction reduction mechanism of the embodiment is used, one end of the first traction assembly, which is far away from the guide piece, is connected with one section of the fracture part, and one end of the second traction assembly, which is far away from the guide piece, is connected with the other section of the fracture part. And the adjusting rod of the adjusting assembly penetrates through the first connecting through hole of the first connecting piece, so that the external thread of the adjusting rod is in threaded fit with the threaded hole of the second traction assembly. Because the second draws subassembly and guide part guide fit, when adjusting the pole and rotate, utilize the external screw thread of adjusting the pole and the screw-thread fit of screw hole to make the second draw the axial displacement of subassembly along the guide part, thereby adjust the second and draw the interval between subassembly and the first subassembly of drawing, and then can draw the drawing to the position that takes place the fracture, thereby make the position that takes place the fracture can reset. The fracture traction reduction mechanism of the embodiment utilizes the guide piece, the first traction assembly, the second traction assembly and the matching between the adjusting rods, and the positions with fractures can be pulled and stretched only by rotating the adjusting rods.

The technical solution is further explained below:

in one embodiment, the first pulling assembly is in guiding engagement with the guide member, and the first pulling assembly is movable and lockable along an axial direction of the guide member; or the first traction assembly is fixedly connected with the guide piece.

In one embodiment, when the first traction assembly is in guiding fit with the guide piece and can move and lock along the axial direction of the guide piece, the first traction assembly comprises a first moving piece which is in guiding fit with the guide piece, the first moving piece can move along the axial direction of the guide piece, and the first moving piece can lock with the guide piece when moving to a preset position.

In one embodiment, the first moving member includes a first sleeve sleeved on the guide member, and a first connecting column connected to the first sleeve and disposed at an included angle with the first sleeve.

In one embodiment, the first traction assembly further comprises a first clamping member, a first bone pin and a second connecting member, one end of the second connecting member is connected with the first connecting column, and the first clamping member is used for connecting the first bone pin with the second connecting member.

In one embodiment, the first clamping piece comprises a first clamping part, a second clamping part, a first central shaft penetrating through the first clamping part and the second clamping part, and a first spring sleeved on the first central shaft and arranged between the first clamping part and the second clamping part, the first clamping part is provided with a first clamping groove used for clamping a second connecting piece, and the second clamping part is provided with a second clamping groove used for clamping the first bone pin; when the first clamping part and the second clamping part are arranged at intervals, the first clamping part can rotate around the central axis of the first central shaft, and the second clamping part can rotate around the central axis of the first central shaft; when the first clamping part is attached to the second clamping part, the first clamping groove clamps the second connecting piece, and the second clamping groove clamps the first spicule.

In one embodiment, the first traction assembly further includes a first moving plate, a first locking member and a second spicule, the first moving plate and the first connecting column are spaced to form a first slot for the second spicule to insert into, and the first locking member is capable of locking the first moving plate, the second spicule and the first connecting column into a whole.

In one embodiment, the first connecting column is provided with a third locking hole, the first moving plate is provided with a fourth locking hole correspondingly communicated with the third locking hole, and the first locking piece can be in locking fit with the third locking hole and the fourth locking hole.

In one embodiment, the fracture distraction reduction mechanism further comprises a locking component to lock the first distraction assembly relative to the guide.

In one embodiment, the guide member is provided with at least two first locking holes along the axial direction of the guide member, the first sleeve is provided with a second locking hole correspondingly communicated with the first locking holes, and the locking component can be in locking fit with the second locking holes and the first locking holes.

In one embodiment, the second traction assembly comprises a second moving part, the second moving part is in guiding fit with the guide part, the second moving part is arranged between the first connecting part and the first traction assembly, and the second traction assembly is provided with the threaded hole.

In one embodiment, the second moving member includes a second sleeve sleeved on the guide member, and a second connecting column connected to the second sleeve and disposed at an included angle with the second sleeve, and the second connecting column is provided with the threaded hole.

In one embodiment, the second traction assembly further comprises a second clamping member, a third bone pin and a third connecting member, one end of the third connecting member is connected with the second connecting column, and the second clamping member is used for connecting the third bone pin with the third connecting member.

In one embodiment, the second clamping member includes a third clamping portion, a fourth clamping portion, a second central shaft passing through the third clamping portion and the fourth clamping portion, and a second spring sleeved on the second central shaft and disposed between the third clamping portion and the fourth clamping portion, the third clamping portion is provided with a third clamping groove for clamping the third connecting member, and the fourth clamping portion is provided with a fourth clamping groove for clamping the third bone pin; when the third clamping part and the fourth clamping part are arranged at intervals, the third clamping part can rotate around the central axis of the second central shaft, and the fourth clamping part can rotate around the central axis of the second central shaft; when the third clamping part is attached to the fourth clamping part, the third clamping groove is clamped with the third connecting piece, and the fourth clamping groove is clamped with the third spicule.

In one embodiment, the second traction assembly further includes a second moving plate, a second locking member, and a fourth spicule, the second moving plate and the second connecting column may form a second slot at an interval for the fourth spicule to insert into, and the second locking member may lock the second moving plate, the fourth spicule, and the second connecting column into a whole.

In one embodiment, the second connecting column is provided with a fifth locking hole, the second moving plate is provided with a sixth locking hole correspondingly communicated with the fifth locking hole, and the second locking piece can be in locking fit with the fifth locking hole and the sixth locking hole.

In one embodiment, the guide part is provided with scales along the axial direction of the guide part; and/or an adjusting part is arranged at one end of the adjusting rod, which is far away from the first traction assembly.

In one embodiment, the adjusting assembly further includes a limiting portion disposed on the adjusting rod, and when the adjusting rod passes through the first connecting through hole and is in threaded engagement with the threaded hole, the limiting portion is in interference engagement with the first connecting piece.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of one embodiment of a fracture distraction reduction mechanism;

FIG. 2 is an exploded view of the fracture distraction reduction mechanism of FIG. 1;

FIG. 3 is a schematic diagram of another embodiment fracture distraction reduction mechanism;

fig. 4 is an exploded view of the fracture distraction reduction mechanism of fig. 3.

Description of reference numerals:

10. the fracture traction reduction mechanism comprises a fracture traction reduction mechanism 100, a guide part 110, a first connecting piece 111, a first connecting through hole 120, a first locking hole 130, scales 200, a first moving part 210, a first sleeve pipe 211, a second locking hole 220, a first connecting column 221, a third locking hole 230, a first clamping piece 240, a first spicule 250, a second connecting piece 260, a first moving plate 270, a first locking piece 280, a second spicule 290, a locking part 300, a second moving part 301, a threaded hole 310, a second sleeve pipe 320, a second connecting column 321, a fifth locking hole 330, a second clamping piece 340, a third spicule 350, a third connecting piece 360, a second moving plate 361, a sixth locking hole 370, a second locking piece 380, a fourth spicule 400, an adjusting component 410, an adjusting rod 420, a limiting part 430 and an adjusting part.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

1-4, in one embodiment, a fracture distraction reduction mechanism 10 is provided and includes a guide 100, a first distraction assembly (not labeled), a second distraction assembly (not labeled), and an adjustment assembly 400. Wherein, one end of the guiding element 100 is provided with a first connecting element 110, and the first connecting element 110 is provided with a first connecting through hole 111; the first pulling assembly is connected to guide 100; the second traction assembly is in guiding fit with the guide piece 100, a threaded hole 301 is formed in the second traction assembly, and the second traction assembly can move along the axial direction of the guide piece 100; the adjustment assembly 400 includes an adjustment lever 410, and the adjustment lever 410 passes through the first coupling through-hole 111 and is screw-engaged with the screw hole 301.

In the fracture traction reduction mechanism 10 of the above embodiment, when in use, one end of the first traction component far away from the guide member 100 is connected with one section of the fracture part, and one end of the second traction component far away from the guide member 100 is connected with the other section of the fracture part. The adjustment rod 410 of the adjustment assembly 400 is inserted through the first connection through-hole 111 of the first connector 110 such that the external threads of the adjustment rod 410 are threadedly engaged with the threaded hole 301 of the second pulling assembly. Because the second traction assembly is in guiding fit with the guide piece 100, when the adjusting rod 410 rotates, the external thread of the adjusting rod 410 is matched with the thread of the threaded hole 301, so that the second traction assembly moves along the axial direction of the guide piece 100, the distance between the second traction assembly and the first traction assembly is adjusted, the position where fracture occurs can be pulled and stretched, and the position where fracture occurs can be reset. The fracture traction reduction mechanism 10 of the above embodiment utilizes the cooperation among the guide member 100, the first traction assembly, the second traction assembly and the adjusting rod 410, and the position where the fracture occurs can be pulled and stretched only by rotating the adjusting rod 410.

Wherein, the guiding member 100 may be a guiding rod, a guiding cylinder, etc.; the first connecting member 110 may be a connecting handle, and may be in the shape of a rod, a bar, or a column, and the first connecting member 110 may be integrally formed with the guide member 100 or separately formed and assembled by screwing, riveting, and the like. The first distraction assembly and the second distraction assembly can be pins, brackets, or other elements that can be attached to the site of the fracture. The adjustment rod 410 may be an adjustment screw or other externally threaded element. Specifically, the adjusting rod 410 is rotated to drive the second traction assembly to move along the axial direction of the guide member 100 toward the direction away from the first traction assembly, so that the part with the fracture is stretched and pulled, and the dislocated fracture part is reset.

Wherein, the connection mode of the first traction assembly and the guide member 100 can be flexibly designed or selected according to the actual use requirement.

In one embodiment, the first pulling member may be fixedly connected to the guide member 100, such as by welding, riveting, integral molding, etc.; when the first distraction assembly is fixedly coupled to the guide, the first distraction assembly can be a pin, bracket, or other element capable of engaging the site of the fracture, directly to the fracture area to be fixed.

In one embodiment, the first pulling assembly is in guiding engagement with the guide 100 and the first pulling assembly is capable of moving and locking along the axial direction of the guide 100. So, utilize the direction cooperation of first traction assembly and guide 100 for first traction assembly can be free along the axial reciprocating motion of guide 100, when first traction assembly moved to the default position (the default position means first moving member 200 moved to with the position corresponding position that takes place the fracture, only need satisfy can be convenient for with one of them section of the position that takes place the fracture be connected can), with first traction assembly and guide 100 locking as an organic whole, can be connected one end that guide 100 was kept away from to first traction assembly and one of them section that takes place the fracture position.

As shown in fig. 2 and 3, optionally, the first traction assembly includes a first moving member 200. The first moving member 200 is slidably engaged with the guide member 100, so that the first moving member 200 can be flexibly reciprocated in the axial direction of the guide member 100, and when the first moving member 200 is moved to a predetermined position, the first moving member 200 is locked with the guide member 100, so that the first moving member can be connected with one of the sections of the fracture site.

As shown in fig. 1 to 4, in particular, the first moving member 200 includes a first sleeve 210 sleeved on the guide member 100, and a first connecting column 220 connected to the first sleeve 210 and disposed at an angle to the first sleeve 210. Therefore, the first moving part 200 and the guide part 100 can be assembled simply and conveniently only by sleeving the first sleeve 210 on the guide part 100; the first sleeve 210 is slidably engaged with the guide 100 to drive the first connecting rod 220 to reciprocate along the axial direction of the guide 100. The first sleeve 210 and the first connecting post 220 may be integrally formed, or may be separately formed and assembled by welding, screwing, or riveting. The first connecting post 220 is preferably perpendicular to the first sleeve 210 for ease of manufacturing and for ease of reading the distance traveled by the first connecting post 220. The first connecting column 220 may also be a first connecting strip or a first connecting block, which only needs to be able to perform a stable and reliable connection with the first sleeve 210 and the first traction member. Although it is specifically described in the embodiment that the first connection column 220 of the first moving part 200 realizes the relative movement through the sleeve connection between the first sleeve 210 and the guide 100, it can be understood by those skilled in the art that other manners may be adopted to realize the relative movement between the first moving part 200 and the guide 100, for example, a sliding groove is provided along the axial direction of the guide 100, the first connection column 220 is provided with a protrusion engaged with the sliding groove, and the relative movement between the first moving part 200 and the guide 100 is realized through the sliding engagement between the protrusion and the sliding groove, as long as the reciprocating movement of the first moving part 200 along the axial direction of the guide 100 can be realized, which is not limited herein.

As shown in fig. 1 and 2, the first distraction assembly further includes a first clamping member 230, a first bone pin 240 and a second connecting member 250. One end of the second connector 250 is connected to the first connecting post 220 by welding, screwing, riveting or clamping. In this way, when the first connecting rod 220 moves along the axial direction of the guide 100, the second connecting rod 250 can be driven to move along the axial direction of the guide 100 synchronously. Also, the first clamping member 230 is used to connect the first bone pin 240 with the second connector 250. Thus, when the first connecting post 220 drives the second connecting member 250 to move along the axial direction of the guide 100, the first clamping member 230 and the first bone pin 240 can be driven to move along the axial direction of the guide 100 synchronously, so that the first bone pin 240 can move to one section of the fracture part to be connected. The second connector 250 may be a connecting rod, a connecting bar, or other components capable of connecting the first connecting column 220 and the first clamping member 230. In an alternative embodiment, the first connecting post 220 may be omitted such that the first connector 250 is directly connected to the first sleeve 210 by welding, screwing, clamping, or the like.

As shown in fig. 1-4, in one embodiment, fracture distraction reduction mechanism 10 further includes a locking member 290 to lock the first distraction assembly relative to guide 100. So, when first subassembly of drawing removed to predetermineeing the position, can utilize the locking part with first subassembly of drawing and guide 100 locking as an organic whole, be convenient for follow-up the interval of drawing between subassembly and the second subassembly of drawing is adjusted first subassembly of drawing to reach the effect of drawing the fracture position.

As shown in fig. 1 to 4, specifically, the guide 100 is provided with at least two first locking holes 120 in the axial direction of the guide 100. As shown in fig. 2 and 4, the first sleeve 210 is provided with a second locking hole 211 correspondingly communicating with the first locking hole 120. The locking member 290 is configured to lockingly engage the second locking hole 211 and the first locking hole 120. Thus, the first sleeve 210 is moved to a predetermined position (for example, above or to the side of the fracture site) along the axial direction of the guide 100 such that the second locking hole 211 communicates with one of the first locking holes 120, and the locking member 290 is inserted into the second locking hole 211 and the first locking hole 120, thereby stably and reliably locking the first sleeve 210 and the guide 100 together.

More specifically, the inner wall of the first locking hole 120 is provided with a first internal thread, the inner wall of the second locking hole 211 is provided with a second internal thread, and the outer wall of the locking member 290 is provided with a first external thread capable of being threadedly engaged with the first internal thread and the second internal thread. Thus, when the first sleeve 210 is moved to a predetermined position relative to the guide 100, and the second locking hole 211 is communicated with one of the first locking holes 120, the first sleeve 210 and the guide 100 can be stably and reliably locked into a whole by only screwing the locking member 290 into the second internal thread of the second locking hole 211 and the first internal thread of the first locking hole 120.

Of course, in other embodiments, the locking member 290 may also be a bolt, and the first locking hole 120 and the second locking hole 211 may be insertion holes for inserting the bolt, so long as it is sufficient to stably and reliably lock the first sleeve 210 and the guide 100 into one.

The first clamping member 230 may be a pin rod clamp or other components capable of transitively connecting the second connector 250 and the first pin 240. When the first clamping member 230 is a bone pin rod clamp, the included angle between the second connecting member 250 and the first bone pin 240 can be flexibly adjusted, so that the use is more flexible and convenient.

In one embodiment, the first clamping member 230 includes a first clamping portion, a second clamping portion, a first central shaft passing through the first clamping portion and the second clamping portion, and a first spring disposed on the first central shaft and between the first clamping portion and the second clamping portion. The first clamping portion is provided with a first clamping groove for clamping the second connecting piece 250, and the second clamping portion is provided with a second clamping groove for clamping the first spicule 240. When the first clamping part and the second clamping part are arranged at intervals, the first clamping part can rotate around the central axis of the first central shaft, and the second clamping part can rotate around the central axis of the first central shaft. When the first clamping portion and the second clamping portion are close to each other to be attached, the first clamping groove clamps the second connecting member 250, and the second clamping groove clamps the first bone pin 240. In this way, by rotating the first clamping part around the central axis of the first central shaft and rotating the second clamping part around the central axis of the first central shaft, the included angle between the central axis of the second connecting piece 250 and the central axis of the first spicule 240 can be flexibly adjusted according to actual use requirements, so that the first clamping part can be connected with the part with the fracture from a plurality of angles; in addition, after the first bone pin 240 is connected to the portion where the fracture occurs, the first bone pin 240 can be fixed only by screwing the first clamping portion and the second clamping portion to be attached to each other. It should be noted that the specific structure of the first needle bar clamp can refer to the prior art with the application number 202010747433.9 or the application number 201821631017.7.

In another embodiment, as shown in fig. 3 and 4, the first distraction assembly further includes a first moving plate 260, a first locking member 270, and a second bone pin 280. When the first moving plate 260 is moved to move the first moving plate 260 away from the first connecting column 220, the first moving plate 260 and the first connecting column 220 are separated to form a first slot, the second bone pin 280 is inserted into the first slot from the side or the bottom, and the first moving plate 260, the second bone pin 280 and the first connecting column 220 are locked together by the first locking member 270. And finally, connecting the second spicules 280 with the corresponding parts with the fracture.

The first locking piece 270 locks the first moving plate 260, the second bone needle 280 and the first connecting column 220 into a whole, can be realized in a plug-in matching mode, can also be realized in a clamping matching mode, can also be realized in a screw connection mode, and only needs to satisfy the requirements that stable and reliable assembly can be realized.

Specifically, as shown in fig. 4, the first connecting column 220 is provided with a third locking hole 221, the first moving plate 260 is provided with a fourth locking hole (not labeled) correspondingly communicated with the third locking hole 221, and the first locking member 270 can be lockingly matched with the third locking hole 221 and the fourth locking hole. Therefore, the first moving plate 260 and the first connecting column 220 can be clamped only by utilizing the locking cooperation of the first locking piece 270, the third locking hole 221 and the fourth locking hole, so that the second spicule 280 inserted into the first slot is locked with the first moving plate 260 and the first connecting column 220 into a whole, and the operation is simple and convenient. The third locking hole 221 and the fourth locking hole are preferably screw holes, the first locking member 270 is preferably a screw member such as a bolt, and the first moving plate 260, the second bone pin 280 and the first connecting column 220 can be locked together by screwing the screw member into the screw holes.

As shown in fig. 2 and 3, optionally, the second traction assembly includes a second moving member 300. The second moving member 300 is slidably engaged with the guide member 100. The second moving member 300 is disposed between the first connecting member 110 and the first pulling assembly, and the second pulling assembly is provided with a threaded hole 301. So, adjust pole 410 and pass first connection through-hole 111 of first connecting piece 110, make the external screw thread of adjusting pole 410 and the screw hole 301 screw-thread fit of second moving member 300, make spacing portion 420 on adjusting pole 410 contradict the cooperation with first connecting piece 110, when rotating to adjust pole 410, can drive the axial displacement of second moving member 300 along guide 100, because first moving member 200 and guide 100 locking are as an organic whole, and then can adjust the interval between first moving member 200 and the second moving member 300, thereby can pull the position of taking place the fracture.

As shown in fig. 1 to 4, in particular, the second moving member 300 includes a second sleeve 310 covering the guide member 100, and a second connecting column 320 connected to the second sleeve 310 and disposed at an angle to the second sleeve 310. The second connecting post 320 is provided with a threaded hole 301. Therefore, the second moving part 300 and the guide part 100 can be assembled simply and conveniently only by sleeving the second sleeve 310 on the guide part 100; meanwhile, by utilizing the sliding fit between the second sleeve 310 and the guide member 100 and combining the thread fit of the adjusting rod 410 and the threaded hole 301 on the second connecting column 320, when the adjusting rod 410 is rotated, the second connecting column 320 can be driven to reciprocate along the axial direction of the guide member 100, so that the distance between the second connecting column 320 and the first connecting column 220 can be adjusted, and the part with fracture can be further pulled. The second sleeve 310 and the second connecting column 320 may be integrally formed, or may be separately formed and assembled by welding, screwing or riveting. The second connecting column 320 is preferably perpendicular to the second sleeve 310 for ease of manufacturing and for ease of reading the distance traveled by the second connecting column 320. The second connection column 320 may also be a second connection bar or a second connection block.

As shown in fig. 1 and 2, the second distraction assembly further includes a second clamping member 330, a third bone pin 340 and a third connecting member 350. One end of the third connecting member 350 is connected to the second connecting post 320 by welding, screwing, riveting or clamping. Thus, when the second connecting column 320 moves along the axial direction of the guide 100, the third connecting member 350 can be driven to move along the axial direction of the guide 100 synchronously. And, the second clamping member 330 is used to connect the third bone pin 340 with the third connector 350. Thus, after the third bone pin 340 is connected to the fractured part, when the third connector 350 moves along the axial direction of the guide 100, the second clamping member 330 and the third bone pin 340 can be driven to move along the axial direction of the guide 100 synchronously, so that the fractured part can be pulled and stretched. The third connecting member 350 may be a connecting rod, a connecting bar or other members capable of connecting the second connecting column 320 with the second clamping member 330.

Wherein the second clamping member 330 can be a bone pin rod clamp or other element capable of transitionally connecting the third connector 350 and the third bone pin 340. When the second clamping member 330 is a bone needle rod clamp, the included angle between the third connecting member 350 and the third bone needle 340 can be flexibly adjusted, and the use is more flexible and convenient.

In one embodiment, the second clamping member 330 includes a third clamping portion, a fourth clamping portion, a second central shaft passing through the third clamping portion and the fourth clamping portion, and a second spring disposed on the second central shaft and between the third clamping portion and the fourth clamping portion. The third clamping portion is provided with a third clamping groove for clamping the third connecting piece 350, and the fourth clamping portion is provided with a fourth clamping groove for clamping the third spicule 340. When the third clamping part and the fourth clamping part are arranged at intervals, the third clamping part can rotate around the central axis of the second central shaft, and the fourth clamping part can rotate around the central axis of the second central shaft. When the third clamping portion and the fourth clamping portion are close to each other to be attached, the third clamping groove clamps the third connecting piece 350, and the fourth clamping groove clamps the third bone pin 340. Thus, by rotating the third clamping part around the central axis of the second central shaft and the fourth clamping part around the central axis of the second central shaft, the included angle between the central axis of the third connecting piece 350 and the central axis of the third spicule 340 can be flexibly adjusted according to actual use requirements, so that the connecting part can be connected with the part with the fracture from a plurality of angles; in addition, after the third bone pin 340 is connected to the fractured portion, the third bone pin 340 can be fixed only by screwing the third clamping portion and the fourth clamping portion to be attached. It should be noted that the specific structure of the second needle bar clamp can refer to the prior art with 202010747433.9 or 201821631017.7.

In another embodiment, as shown in fig. 3 and 4, the second distraction assembly further includes a second moving plate 360, a second locking member 370, and a fourth bone pin 380. When the second moving plate 360 is moved to move the second moving plate 360 away from the second connecting column 320, the second moving plate 360 and the second connecting column 320 form a second slot at an interval, the fourth spicule 380 is inserted into the second slot from the side or the bottom, and the second moving plate 360, the fourth spicule 380 and the second connecting column 320 are locked into a whole by the second locking member 370. And finally, connecting the fourth spicule 380 with the corresponding part with the fracture.

The second locking piece 370 locks the second moving plate 360, the fourth spicule 380 and the second connecting column 320 into a whole, can be realized in a plug-in matching mode, can also be realized in a clamping matching mode, can also be realized in a screwing mode, and only needs to satisfy the requirements that stable and reliable assembly can be realized.

Specifically, as shown in fig. 4, the second connecting rod 320 is provided with a fifth locking hole 321, the second moving plate 360 is provided with a sixth locking hole 361 correspondingly communicated with the fifth locking hole 321, and the second locking member 370 can be locked and matched with the fifth locking hole 321 and the sixth locking hole 361. So, only need to utilize the locking cooperation of second locking piece 370 and fifth locking hole 321 and sixth locking hole 361, can press from both sides tightly second movable plate 360 and second spliced pole 320 to make fourth spicule 380 and second movable plate 360 and the locking of second spliced pole 320 that insert in the second slot as an organic whole, simple and convenient. The fifth locking hole 321 and the sixth locking hole 361 are preferably threaded holes, the second locking member 370 is preferably a threaded member such as a bolt, and the second moving plate 360, the fourth spicule 380 and the second connecting column 320 can be locked into a whole by screwing the threaded member into the threaded holes.

It should be noted that the first clamping member 230 and the second clamping member 330 can be used simultaneously; the first moving plate 260, the first lock 270, the second moving plate 360, and the second lock 370 may be used simultaneously; the first clamping member 230, the second moving plate 360 and the second locking member 370 can be used simultaneously; the first moving plate 260, the first locking member 270, and the second clamping member 330 may be used simultaneously.

In addition, the space between the first traction assembly and the second traction assembly is convenient to obtain; meanwhile, the moving distance of the second traction assembly relative to the guide member 100 and the moving distance of the first traction assembly relative to the guide member 100 are also convenient to obtain. As shown in fig. 1 and 3, in one embodiment, the guide member 100 is provided with a scale 130 along the axial direction of the guide member 100. Therefore, when the first traction assembly or the second traction assembly moves along the axial direction of the guide part 100, only the scale 130 on the guide part 100 needs to be read, the moving distance and the relative distance can be simply and conveniently acquired, and the distance between the first traction assembly and the second traction assembly can be conveniently and accurately adjusted. Specifically, the scales 130 can be used to read the moving distance and the relative distance of the first sleeve 210 and the second sleeve 310, respectively, which is simple and convenient.

In addition, to facilitate the rotation of the adjustment lever 410, as shown in fig. 1 to 4, in one embodiment, an end of the adjustment lever 410, which is away from the first drawing assembly, is provided with an adjustment portion 430. Therefore, the adjusting rod 410 can be conveniently and laborsavingly screwed to rotate by using the adjusting part 430, so that the second traction assembly can smoothly reciprocate along the axial direction of the guide member 100 relative to the first traction assembly, and further the distance between the second traction assembly and the first traction assembly can be adjusted. The adjusting portion 430 may be an adjusting knob, an adjusting handle, or other structures capable of assisting the adjusting lever 410 to rotate.

In addition, in a specific embodiment, the adjusting assembly 400 may further include a limiting portion 420 disposed on the adjusting lever 410, and when the adjusting lever 410 passes through the first connecting through hole 111 and is threadedly engaged with the threaded hole 301, the limiting portion 420 may be in interference engagement with the first connecting member 110. The limiting part 420 can prevent the adjusting rod 410 from moving along the axial direction of the guide member 100 during the rotation process, so as to apply force to the adjusting rod 410; the adjusting rod 410 can be prevented from pushing the second traction assembly to move towards the direction close to the first traction assembly, and secondary damage to the fracture part is avoided. The limiting part 420 may be a limiting block, a limiting strip or a limiting column, and only needs to be able to block the axial movement of the adjusting rod 410 along the guide 100. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. The term "and/or" as used in this disclosure includes any and all combinations of one or more of the associated listed items.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

It should also be understood that in explaining the connection relationship or the positional relationship of the elements, although not explicitly described, the connection relationship and the positional relationship are interpreted to include an error range which should be within an acceptable deviation range of a specific value determined by those skilled in the art. For example, "about," "approximately," or "substantially" may mean within one or more standard deviations, without limitation.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (18)

1. A fracture traction reduction mechanism, comprising:

the guide piece is provided with a first connecting piece at one end, and the first connecting piece is provided with a first connecting through hole;

a first pulling assembly coupled to the guide;

the second traction assembly is in guiding fit with the guide piece, a threaded hole is formed in the second traction assembly, and the second traction assembly can move along the axial direction of the guide piece; and

the adjusting assembly comprises an adjusting rod, and the adjusting rod penetrates through the first connecting through hole and is in threaded fit with the threaded hole.

2. The fracture distraction reduction mechanism of claim 1, wherein the first distraction assembly is in guiding engagement with the guide member, and the first distraction assembly is movable and lockable along the axial direction of the guide member; or the first traction assembly is fixedly connected with the guide piece.

3. The fracture distraction reduction mechanism of claim 2, wherein when the first distraction assembly is in guiding engagement with the guide member and the first distraction assembly is movable and lockable in the axial direction of the guide member, the first distraction assembly comprises a first moving member which is in guiding engagement with the guide member, the first moving member is movable in the axial direction of the guide member, and the first moving member is lockable with the guide member when moved to a predetermined position.

4. The fracture distraction reduction mechanism of claim 3, wherein the first moving member comprises a first sleeve sleeved on the guide member and a first connecting post connected to the first sleeve and disposed at an angle to the first sleeve.

5. The fracture distraction reduction mechanism of claim 4, wherein the first distraction assembly further comprises a first clamping member, a first bone pin, and a second connecting member, one end of the second connecting member being coupled to the first connecting post, the first clamping member being configured to couple the first bone pin to the second connecting member.

6. The fracture traction reduction mechanism according to claim 5, wherein the first clamping member comprises a first clamping portion, a second clamping portion, a first central shaft passing through the first clamping portion and the second clamping portion, and a first spring sleeved on the first central shaft and arranged between the first clamping portion and the second clamping portion, the first clamping portion is provided with a first clamping groove for clamping the second connecting member, and the second clamping portion is provided with a second clamping groove for clamping the first bone pin; when the first clamping part and the second clamping part are arranged at intervals, the first clamping part can rotate around the central axis of the first central shaft, and the second clamping part can rotate around the central axis of the first central shaft; when the first clamping part is attached to the second clamping part, the first clamping groove clamps the second connecting piece, and the second clamping groove clamps the first bone pin.

7. The fracture distraction reduction mechanism of claim 4, wherein the first distraction assembly further comprises a first moving plate, a first locking piece and a second spicule, the first moving plate can be spaced from the first connecting column to form a first slot for the second spicule to insert into, and the first locking piece can lock the first moving plate, the second spicule and the first connecting column into a whole.

8. The fracture traction reduction mechanism according to claim 7, wherein the first connecting column is provided with a third locking hole, the first moving plate is provided with a fourth locking hole correspondingly communicated with the third locking hole, and the first locking member can be locked and matched with the third locking hole and the fourth locking hole.

9. The fracture distraction reduction mechanism of any of claims 4 to 8, further comprising a locking means to lock the first distraction assembly relative to the guide.

10. The fracture traction reduction mechanism of claim 9, wherein the guide member is provided with at least two first locking holes along the axial direction of the guide member, the first sleeve is provided with a second locking hole correspondingly communicated with the first locking holes, and the locking member can be locked and matched with the second locking holes and the first locking holes.

11. The fracture distraction reduction mechanism of any of claims 1 to 8, wherein the second distraction assembly comprises a second moving member in guiding engagement with the guide member, the second moving member being disposed between the first connecting member and the first distraction assembly, the second distraction assembly being provided with the threaded bore.

12. The traction reduction mechanism for bone fracture according to claim 11, wherein said second moving member comprises a second sleeve sleeved on said guiding member and a second connecting column connected with said second sleeve and disposed at an angle with said second sleeve, said second connecting column being provided with said threaded hole.

13. The fracture distraction reduction mechanism of claim 12, wherein the second distraction assembly further comprises a second clamping member, a third pin, and a third connecting member, one end of the third connecting member being connected to the second connecting post, the second clamping member being adapted to connect the third pin to the third connecting member.

14. The fracture traction reduction mechanism according to claim 13, wherein the second clamping member comprises a third clamping portion, a fourth clamping portion, a second central shaft passing through the third clamping portion and the fourth clamping portion, and a second spring sleeved on the second central shaft and arranged between the third clamping portion and the fourth clamping portion, the third clamping portion is provided with a third clamping groove for clamping the third connecting member, and the fourth clamping portion is provided with a fourth clamping groove for clamping the third bone pin; when the third clamping part and the fourth clamping part are arranged at intervals, the third clamping part can rotate around the central axis of the second central shaft, and the fourth clamping part can rotate around the central axis of the second central shaft; when the third clamping part is attached to the fourth clamping part, the third clamping groove is clamped with the third connecting piece, and the fourth clamping groove is clamped with the third spicule.

15. The fracture distraction reduction mechanism of claim 12, wherein the second distraction assembly further comprises a second moving plate, a second locking member and a fourth spicule, the second moving plate and the second connecting column can be separated to form a second slot for inserting the fourth spicule, and the second locking member can lock the second moving plate, the fourth spicule and the second connecting column into a whole.

16. The fracture distraction reduction mechanism of claim 15, wherein the second connecting post is provided with a fifth locking hole, the second moving plate is provided with a sixth locking hole in communication with the fifth locking hole, and the second locking member is adapted to lockingly engage the fifth locking hole and the sixth locking hole.

17. The fracture traction reduction mechanism according to any one of claims 1 to 8, 10, 12 to 16, wherein the guide member is provided with a scale in an axial direction of the guide member; and/or an adjusting part is arranged at one end of the adjusting rod, which is far away from the first traction assembly.

18. The traction reduction mechanism for bone fracture according to any one of claims 1 to 8, 10, 12 to 16, wherein the adjusting assembly further comprises a limiting portion disposed on the adjusting rod, and when the adjusting rod passes through the first connecting through hole and is in threaded engagement with the threaded hole, the limiting portion is in interference engagement with the first connecting piece.

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