Fracture reduction device

Abstract

The present invention provides a fracture reduction device, which relates to the technical field of medical devices. The fracture reduction device includes: a fixing frame, a driving mechanism, a proximal traction mechanism and a distal traction mechanism, wherein the proximal traction mechanism and the distal traction mechanism are used to be connected to the proximal end and the distal end of the broken bone respectively; the driving mechanism is connected to the fixing frame; one of the proximal traction mechanism and the distal traction mechanism is connected to the fixing frame, and the other is connected to the movable end of the driving mechanism, and the driving mechanism is used to drive the proximal traction mechanism or the distal traction mechanism connected thereto to move, so that the distance between the distal traction mechanism and the proximal traction mechanism changes. The above device is used to assist in the traction and stretching of the broken bone, and only one operator is required to complete the traction reduction work; when the broken bone is stretched by the driving mechanism, the stretching action is smooth, and the length of the lower limb after reduction can be stably maintained.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a fracture reduction device. Background Art

[0002] Shaft fractures of long tubular bones of the lower limbs and fractures of the distal and proximal ends of long tubular bones of the lower limbs are common clinical fractures. Surgical treatment is the preferred treatment method, including intramedullary nail fixation and plate fixation. Taking tibia fracture as an example, due to the strong strength of the gastrocnemius and other calf muscles, the two fractured bones often have problems such as shortening and deformity due to muscle traction.

[0003] Intraoperative traction is an important means to reduce the fracture of long tubular bones such as the tibia and restore the length of the lower limbs. Currently, during the intraoperative traction reduction process, an assistant is needed to help pull the two fractured bones and assist in reduction so that the fractured bones can be restored to their original length.

[0004] However, the above-mentioned manual traction is very laborious, and two assistants are required to hold the proximal and distal ends respectively during the operation. The length of the lower limb after reduction cannot be stably maintained, which may affect the treatment effect. In addition, the two assistants may occupy the surgeon's space and affect the surgeon's surgical operation. Summary of the invention

[0005] The purpose of the present invention is to provide a fracture reduction device to alleviate the technical problems of laborious manual traction, unstable reduction and multi-person operation occupying the operator's operating space during the existing intraoperative traction.

[0006] An embodiment of the present invention provides a fracture reduction device, comprising: a fixing frame, a driving mechanism, a proximal traction mechanism and a distal traction mechanism, wherein the proximal traction mechanism and the distal traction mechanism are used to be connected to the proximal end and the distal end of the broken bone respectively; the driving mechanism is connected to the fixing frame;

[0007] One of the proximal traction mechanism and the distal traction mechanism is connected to the fixed frame, and the other is connected to the movable end of the driving mechanism. The driving mechanism is used to drive the proximal traction mechanism or the distal traction mechanism connected thereto to move so as to change the distance between the distal traction mechanism and the proximal traction mechanism.

[0008] Furthermore, the proximal traction mechanism is connected to the fixing frame, and the distal traction mechanism is connected to the movable end of the driving mechanism.

[0009] Furthermore, the driving mechanism includes a sleeve fixedly connected to the fixed frame, a screw movably connected in the sleeve, and a driving member threadedly connected to the screw, and the driving member is axially fixed relative to the sleeve, and the screw forms the movable end; the driving member can rotate relative to the screw so that the screw can move axially under the rotation of the driving member.

[0010] Furthermore, the movable end of the driving mechanism and the proximal traction mechanism or the distal traction mechanism connected thereto are connected via a universal ball joint.

[0011] Furthermore, the proximal traction mechanism includes a proximal puncture rod and two support arms, and the proximal puncture rod is movably sleeved on the two support arms respectively;

[0012] The two support arms are movably connected to the fixing frame, and the distance between the two support arms is adjustable, so that the length of the portion of the proximal puncture rod located between the two support arms is adjustable.

[0013] Furthermore, a slider is slidably connected to the support arm, the proximal puncture rod is connected to the slider, and the sliding direction of the slider is perpendicular to the proximal puncture rod.

[0014] Furthermore, the fixing frame is provided with a plug hole, and the supporting arm includes a shaft portion for plugging into the plug hole, so that the proximal traction mechanism can rotate toward or away from the position where the distal traction mechanism is located;

[0015] The fixing frame is provided with a locking member, and the locking member is used to lock the shaft portion and the fixing frame during locking.

[0016] Furthermore, along the circumference of the shaft portion, the side wall of the shaft portion has a plurality of planes connected end to end, and the planes are used to abut against the locking member.

[0017] Furthermore, the fixing frame includes a first supporting structure, a second supporting structure and a third supporting structure connected end to end, and any two of the three are hinged;

[0018] The proximal traction mechanism and the distal traction mechanism are respectively connected to two ends of the second supporting structure, and the first supporting structure is close to the proximal traction mechanism and far away from the distal traction mechanism;

[0019] The length of the first supporting structure and / or the second supporting structure is adjustable, so that the inclination angle of the second supporting structure is adjustable.

[0020] Furthermore, the second supporting structure includes a main body, and a first fixing portion and a second fixing portion respectively hinged at two ends of the main body, so that the first fixing portion and the second fixing portion can rotate toward or away from each other;

[0021] The proximal traction mechanism and the distal traction mechanism are connected to the first fixing part and the second fixing part respectively.

[0022] Furthermore, the second fixing portion includes two parallel and spaced lower connecting arms, and a cross bar respectively connected to the two lower connecting arms, the distal traction mechanism is connected to the cross bar, and the cross bar is movably connected to the lower connecting arms so that the height position of the cross bar is adjustable.

[0023] Furthermore, along the length direction of the lower connecting arm, a plurality of slots are arranged at intervals on the lower connecting arm, and clamping bolts are threadedly connected to both ends of the cross bar. The clamping bolts include a rod portion and a cap portion, and the rod portion is clamped in the slots. The cap portion and the end faces of the cross bar are used to clamp the opposite side walls of the lower connecting arm.

[0024] Furthermore, a first tooth structure is provided on the end surface of the crossbar, and a second tooth structure for meshing with the first tooth structure is provided on the inner end surface of the slot.

[0025] Further, the first fixing portion includes two upper connecting arms which are parallel and spaced apart, and the proximal traction mechanism is connected to the two upper connecting arms;

[0026] Each of the upper connecting arm and the lower connecting arm comprises a first folding portion and a second folding portion, and one end of the first folding portion is hinged to the main body;

[0027] The other end of the first folding portion is hinged to the second folding portion, so that the second folding portion on one of the upper connecting arms can rotate toward the position of the other upper connecting arm, and the second folding portion on one of the lower connecting arms can rotate toward the position of the other lower connecting arm;

[0028] The first folding portion and the second folding portion are correspondingly provided with clamping structures, and the clamping structures are used to prevent the first folding portion and the second folding portion from rotating relative to each other when the first folding portion and the second folding portion are in the same straight line.

[0029] Furthermore, a clamping sleeve is movably sleeved on the second folding portion, and the clamping sleeve can move along the length direction of the second folding portion and can be sleeved with the first folding portion and the second folding portion at the same time.

[0030] Furthermore, a return spring is provided between the second folding portion and the clamping sleeve, and the return spring is used to drive the clamping sleeve toward the first folding portion.

[0031] Furthermore, the second supporting structure is provided with a strip-shaped limiting hole along its length direction, and a tightening bolt is provided at one end of the first supporting structure. The tightening bolt is slidably connected in the strip-shaped limiting hole, and the tightening bolt and the first supporting structure can be fixed with the strip-shaped limiting hole when the tightening bolt is tightened.

[0032] Compared with the prior art, the fracture reduction device provided by the embodiment of the present invention has the following beneficial effects:

[0033] The proximal traction mechanism and the distal traction mechanism are connected to the proximal and distal ends of the patient's broken bone respectively; the driving mechanism can be connected to the proximal traction mechanism or the distal traction mechanism, for example, the driving mechanism is connected to the distal traction mechanism, and when the driving mechanism is started, the driving mechanism can drive the distal traction mechanism away from the proximal traction mechanism, thereby driving the distal end of the broken bone away from the proximal end of the broken bone until the broken bone returns to its original length. The above device is used to assist in the traction and stretching of the broken bone, and only one operator is required to complete the traction reduction work; when the driving mechanism is used to stretch the broken bone, the stretching action is smooth, and the length of the lower limb after reduction can be stably maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of a fracture reduction device provided by an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of the fracture reduction device provided by an embodiment of the present invention when in use;

[0037] Figure 3 A schematic diagram of a driving mechanism and a distal traction mechanism of a fracture reduction device provided in an embodiment of the present invention;

[0038] Figure 4 for Figure 3 Sectional view in the AA direction;

[0039] Figure 5 for Figure 4 A partial enlarged view of position B in the middle;

[0040] Figure 6 for Figure 1 A partial enlarged view of the C position in the middle;

[0041] Figure 7 A schematic diagram of a fixing frame of a fracture reduction device provided in an embodiment of the present invention;

[0042] Figure 8 for Figure 7 A partial enlarged view of the D position in the middle;

[0043] Fig. 9 for Figure 7 A partial enlarged view of the E position in the middle;

[0044] Fig.10 for Fig. 9 A cross-sectional view at the position shown;

[0045] Fig.11 for Figure 7 A partial enlarged view of the F position in the middle.

[0046] Icons: 100-fixed frame; 200-driving mechanism; 210-sleeve; 220-screw; 221-strip limit groove; 222-ball head; 230-driving member; 240-stop column; 300-proximal traction mechanism; 310-support arm; 311-shaft; 320-proximal puncture rod; 330-sliding block; 340-locking member; 400-distal traction mechanism; 410-ball head seat; 511-first Support unit; 521-second support unit; 522-lower connecting arm; 523-upper connecting arm; 524-cross bar; 531-third support unit; 610-slot; 620-clamping bolt; 630-first tooth structure; 640-second tooth structure; 710-first folding part; 720-second folding part; 730-clamping sleeve; 740-reset spring; 810-strip limiting hole; 820-tightening bolt. DETAILED DESCRIPTION

[0047] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] The fracture reduction device provided in the embodiment of the present invention is used to pull the proximal and distal ends of the broken bone of the patient to restore the broken bone to its original length. For the convenience of describing the structure of the device, the "front-to-back direction" mentioned below refers to the length direction of the device, that is, the pulling direction, and the "left-right direction" refers to the width direction of the trochanter, and the "left-right direction" is perpendicular to the pulling direction. Figure 1 Shown in.

[0049] like Figure 1 and Figure 2 As shown, the fracture reduction device provided by the embodiment of the present invention comprises: a fixing frame 100, a driving mechanism 200, a proximal traction mechanism 300 and a distal traction mechanism 400, wherein the proximal traction mechanism 300 and the distal traction mechanism 400 are respectively connected to the proximal end and the distal end of the broken bone. The driving mechanism 200 is connected to the fixing frame 100. One of the proximal traction mechanism 300 and the distal traction mechanism 400 is connected to the fixing frame 100, and the other is connected to the movable end of the driving mechanism 200. The driving mechanism 200 is used to drive the proximal traction mechanism 300 or the distal traction mechanism 400 connected thereto to move, so that the distance between the distal traction mechanism 400 and the proximal traction mechanism 300 changes.

[0050] In this embodiment, the proximal traction mechanism 300 is connected to the fixing frame 100, and the distal traction mechanism 400 is connected to the movable end of the driving mechanism 200. The driving mechanism 200 is located at the end of the device away from the human body. Such a setting can facilitate the operator to operate the driving mechanism 200 and prevent the patient from affecting the operation of the driving mechanism 200. Of course, the driving mechanism 200 is connected to the proximal traction mechanism 300 to achieve the purpose of traction reduction.

[0051] The specific operation and effect are as follows: the proximal traction mechanism 300 and the distal traction mechanism 400 are connected to the proximal and distal ends of the patient's broken bone respectively. When the driving mechanism 200 is started, the driving mechanism 200 can drive the distal traction mechanism 400 away from the proximal traction mechanism 300, thereby driving the distal end of the broken bone away from the proximal end of the broken bone until the broken bone is restored to its original length. The above device is used to assist in the traction and stretching of the broken bone, and only one operator is required to complete the traction and reduction work; when the driving mechanism 200 is used to stretch the broken bone, the stretching action is smooth, and the length of the lower limb after reduction can be stably maintained.

[0052] The distal traction mechanism 400 includes a traction bow, both ends of which are connected to a distal puncture rod, which is used to penetrate the distal end of the broken bone.

[0053] like Figure 3-Figure 5 As shown, the driving mechanism 200 includes a sleeve 210 fixedly connected to the fixing frame 100, a screw rod 220 movably connected in the sleeve 210, and a driving member 230 threadedly connected to the screw rod 220, and the driving member 230 is axially fixed relative to the sleeve 210, and the screw rod 220 forms the movable end; the driving member 230 can rotate relative to the screw rod 220, so that the screw rod 220 can move axially under the rotation action of the driving member 230.

[0054] The sleeve 210 is arranged along the front-back direction, the screw rod 220 is sleeved in the sleeve 210, and the driving member 230 can be a nut threadedly connected to the screw rod 220. One end of the nut is rotatably connected to the sleeve 210, and the nut is relatively fixed in the axial direction of the sleeve 210. A stop column 240 extending toward the center direction can be arranged inside the sleeve 210, and a strip-shaped limiting groove 221 extending along the length direction of the screw rod 220 is arranged on the outer wall of the screw rod 220, and the stop column 240 is inserted into the strip-shaped limiting groove 221, thereby preventing the screw rod 220 from rotating relative to the sleeve 210, so that when the nut is rotated forward or reversely, the nut can drive the screw rod 220 to move linearly, thereby driving the distal traction mechanism 400 to move toward or away from the proximal traction mechanism 300. In addition, when the above-mentioned driving mechanism 200 is used, when the nut is not subjected to force, the distal traction mechanism 400 cannot drive the screw rod 220 to move in the reverse direction, and such a one-way driving method can achieve a certain locking effect.

[0055] The driving mechanism 200 may further include a stepping motor, the rotating shaft of the stepping motor is engaged with the outer wall of the driving member 230, so that the driving member 230 can be driven to rotate by the stepping motor.

[0056] The movable end of the driving mechanism 200 and the proximal traction mechanism 300 or the distal traction mechanism 400 connected thereto are connected via a universal ball joint.

[0057] A ball head 222 may be provided at the end of the screw rod 220, and a ball head seat 410 may be provided on the distal traction mechanism 400. The ball head 222 is connected in the ball head seat 410, thereby realizing universal rotation of the distal traction mechanism 400. Before the distal traction mechanism 400 is connected to the distal end of the patient's broken bone, it can be adjusted to a suitable angle to facilitate connection with the broken bone.

[0058] like Figure 6 As shown, the proximal traction mechanism 300 includes a proximal puncture rod 320 and two support arms 310, and the proximal puncture rod 320 is movably sleeved on the two support arms 310 respectively; the two support arms 310 are movably connected to the fixing frame 100, and the distance between the two support arms 310 is adjustable so that the length of the portion of the proximal puncture rod 320 located between the two support arms 310 is adjustable.

[0059] The proximal puncture rod 320 penetrates the proximal end of the broken bone. The support arm 310 can be in an "L" shape. After the proximal puncture rod 320 is connected to the proximal end of the broken bone, it is connected to the two support arms 310. The two support arms 310 are movably connected to the fixing frame 100. In this embodiment, the position of the support arm 310 can be adjusted in the left and right directions. Before traction, the distance between the two support arms 310 can be adjusted as small as possible, thereby shortening the two fulcrums where the proximal puncture rod is connected to the two support arms 310, thereby alleviating the problem of bending of the proximal puncture rod during traction.

[0060] The support arm 310 is slidably connected with a slider 330 , the proximal puncture rod 320 is connected to the slider 330 , and the sliding direction of the slider 330 is perpendicular to the proximal puncture rod 320 .

[0061] The slider 330 is provided with a locking bolt. After the locking bolt is tightened, the slider 330 can be fixed to the support arm 310. By sliding and fixing the slider 330 connected to the support arm 310, the distance between the proximal puncture rod 320 and the distal traction mechanism 400 can be adjusted to adapt to different broken bones.

[0062] The fixing frame 100 is provided with a socket, and the support arm 310 includes a shaft portion 311 for plugging into the socket, so that the proximal traction mechanism 300 can rotate toward or away from the position where the distal traction mechanism 400 is located; the fixing frame 100 is provided with a locking member 340, and the locking member 340 is used to lock the shaft portion 311 with the fixing frame 100 when locking.

[0063] The depth direction of the jack and the length direction of the shaft 311 are both arranged along the left-right direction, and the shaft 311 can rotate in the jack, so that the proximal traction mechanism 300 can rotate in the front-back direction. The locking member 340 can be a locking bolt abutting against the shaft 311. By rotating the proximal traction mechanism 300 in the front-back direction, on the one hand, the distance between the distal traction mechanism 400 and the proximal traction mechanism 300 can be changed, and on the other hand, the inclination angle of the line connecting the distal traction mechanism 400 and the proximal traction mechanism 300 can also be changed, so as to adapt to different patients. For example, some patients have multiple fractures. When the distal traction mechanism 400 and the proximal traction mechanism 300 are fixed, the inclination angle of the line connecting the two is made to match the inclination angle of the patient's own limbs as much as possible, so as to avoid causing pain to the patient due to adjustment.

[0064] Along the circumference of the shaft portion 311 , the side wall of the shaft portion 311 has a plurality of planes connected end to end, and the planes are used to abut against the locking member 340 .

[0065] In order to prevent the shaft 311 from accidentally rotating and increase the stability of the shaft 311, the shaft 311 can be set to a prism structure, such as an octagonal prism, so that the surface abutting against the locking member 340 is a plane, and the shaft 311 is not easy to rotate after locking.

[0066] like Figure 7 As shown, the fixing frame 100 includes a first supporting structure, a second supporting structure and a third supporting structure which are connected in sequence end to end, and any two of the three are hinged; the proximal traction mechanism 300 and the distal traction mechanism 400 are respectively connected to the two ends of the second supporting structure, and the first supporting structure is close to the proximal traction mechanism 300 and far away from the distal traction mechanism 400; the length of the first supporting structure and / or the second supporting structure is adjustable so that the inclination angle of the second supporting structure is adjustable.

[0067] The fixing frame 100 includes a first supporting structure, a second supporting structure, and a third supporting structure connected in sequence to form a triangular support, wherein the third supporting structure serves as a base, and the two ends of the second supporting structure are respectively connected to the proximal traction mechanism 300 and the distal traction mechanism 400, and the first supporting structure is used to adjust the inclination angle of the second supporting structure. In order to make the fixing frame 100 foldable, the first supporting structure can be set as a length-adjustable structure, or the second supporting structure can be set as a length-adjustable structure, or both can be set as length-adjustable structures. When no longer needed, the first supporting structure and the second supporting structure can be rotated toward the third supporting structure to reduce the occupied space of the fixing frame 100.

[0068] Preferably, the length of the third supporting structure is adjustable, thereby further shortening the length of the folded fixing frame 100 .

[0069] In this embodiment, the first support structure includes two left and right first support units 511, and the two are connected by a first crossbeam; the second support structure includes two left and right second support units 521, and the third support structure includes two third support units 531, and the two third support units 531 are connected by a second crossbeam.

[0070] The second supporting structure includes a main body, and a first fixing part and a second fixing part respectively hinged at both ends of the main body, so that the first fixing part and the second fixing part can rotate toward or away from each other; the proximal traction mechanism 300 and the distal traction mechanism 400 are respectively connected to the first fixing part and the second fixing part.

[0071] The second support unit 521 and the third support unit 531 may both include a plurality of support tubes that are sleeved in sequence, and two adjacent support tubes can slide relative to each other, and their lengths can be adjusted by telescoping.

[0072] The first support unit 511 may include an adjusting screw 220 , an adjusting nut and an adjusting screw sleeve. The adjusting screw 220 is sleeved in the adjusting screw sleeve. By rotating the adjusting nut, the length of the adjusting screw 220 extending out of the adjusting screw sleeve can be changed, thereby adjusting the length of the first support unit 511 .

[0073] In order to further reduce the volume of the fixing frame 100 after folding, when folding, the first fixing part can be flipped toward the second fixing part until the first fixing part is in contact with the main body, and similarly, the second fixing part can be flipped toward the first fixing part until the second fixing part is also in contact with the main body, thereby shortening the length of the second supporting structure. A locking structure can be provided at the hinge between the first fixing part and the second fixing part and the main body, so that when the first fixing part and the second fixing part are rotated to a suitable angle, the two fixing parts are fixed to the main body to prevent further rotation.

[0074] like Figure 8 As shown, the second fixing portion includes two parallel and spaced lower connecting arms 522, and a cross bar 524 respectively connected to the two lower connecting arms 522, the distal traction mechanism 400 is connected to the cross bar 524, and the cross bar 524 is movably connected to the lower connecting arms 522 so that the height position of the cross bar 524 is adjustable.

[0075] When the resetting device is in use, the second fixing portion can be rotated upward, and the height of the distal traction mechanism 400 can be changed by adjusting the vertical position of the cross bar 524 to correspond to the distal end of the patient's broken bone.

[0076] Along the length direction of the lower connecting arm 522, a plurality of slots 610 are arranged at intervals on the lower connecting arm 522, and clamping bolts 620 are threadedly connected to both ends of the cross bar 524. The clamping bolts 620 include a rod portion and a cap portion, and the rod portion is clamped in the slot 610. The end faces of the cap portion and the cross bar 524 are used to clamp the opposite side walls of the lower connecting arm.

[0077] During installation, the clamping bolt 620 can be loosened, the cross bar 524 can be adjusted to a suitable height, and then the clamping bolt 620 can be tightened. The cap of the clamping bolt 620 and the end face of the cross bar 524 clamp the lower connecting arm 522, thereby fixing the cross bar 524 and the lower connecting arm 522.

[0078] Preferably, a first tooth structure 630 is disposed on the end surface of the cross bar 524 , and a second tooth structure 640 for meshing with the first tooth structure 630 is disposed on the inner end surface of the slot 610 .

[0079] When the clamping bolts 620 at both ends of the cross bar 524 are clamped in the slot 610 of appropriate height, the first tooth structure 630 on the end face of the cross bar 524 can be aligned and engaged with the second tooth structure 640 on the lower connecting arm 522. When the clamping bolt 620 is rotated, the first tooth structure 630 and the second tooth structure 640 can prevent the cross bar 524 from rotating, thereby facilitating the fixation of the cross bar 524 and the lower connecting arm 522. In addition, when the clamping bolt 620 is locked, the first tooth structure 630 and the second tooth structure 640 can prevent the cross bar 524 from disengaging from the slot 610, thereby increasing the stability of the device.

[0080] like Fig. 9 and Fig.10 As shown, the first fixing portion includes two upper connecting arms 523 that are parallel and spaced apart, and the proximal traction mechanism 300 is connected to the two upper connecting arms 523; each of the upper connecting arm 523 and the lower connecting arm 522 includes a first folding portion 710 and a second folding portion 720, and one end of the first folding portion 710 is hinged to the main body; the other end of the first folding portion 710 is hinged to the second folding portion 720, so that the second folding portion 720 on one of the upper connecting arms 523 can rotate toward the position of the other upper connecting arm 523, and the second folding portion 720 on one of the lower connecting arms 522 can rotate toward the position of the other lower connecting arm 522; the first folding portion 710 and the second folding portion 720 are correspondingly provided with a clamping structure, and the clamping structure is used to prevent the first folding portion 710 and the second folding portion 720 from rotating relative to each other when they are in the same straight line.

[0081] Taking the upper connecting arm 523 as an example, the upper connecting arm 523 can be divided into two sections, namely the first folding portion 710 and the second folding portion 720, which are hinged, and the hinge axis of the two is set along the front-to-back direction, so that the second folding portion 720 can be folded into the device along the left-right direction to be in a horizontal state. Similarly, the second folding portion 720 of the lower connecting arm 522 can also be folded into the device along the left-right direction to be in a horizontal state, further reducing the height of the device after folding, and utilizing the hollow area in the middle of the device.

[0082] A clamping sleeve 730 is movably sleeved on the second folding portion 720 . The clamping sleeve 730 can move along the length direction of the second folding portion 720 and can be sleeved with the first folding portion 710 and the second folding portion 720 at the same time.

[0083] The clamping sleeve 730 can be slidably connected to the second folding portion 720. When the first folding portion 710 and the second folding portion 720 are in a straight line, the clamping sleeve 730 can be slid toward the first folding portion 710 until the clamping sleeve 730 is simultaneously sleeved on the first folding portion 710 and the second folding portion 720. In this way, the clamping sleeve 730 restricts the first folding portion 710 and the second folding portion 720 to prevent them from rotating relative to each other.

[0084] A return spring 740 is disposed between the second folding portion 720 and the clamping sleeve 730 , and the return spring 740 is used to drive the clamping sleeve 730 toward the first folding portion 710 .

[0085] In order to conveniently and quickly locate the angle between the first folding portion 710 and the second folding portion 720, a return spring 740 may be provided between the second folding portion 720 and the clamping sleeve 730. When the fixing frame 100 is folded, the clamping sleeve 730 may be pulled away from the first folding portion 710, so that the clamping sleeve 730 is separated from the first folding portion 710, and the second folding portion 720 may be rotated relative to the first folding portion 710; and when the fixing frame 100 needs to be unfolded, the second folding portion 720 may be rotated to be in line with the first folding portion 710, and the clamping sleeve 730 is sleeved on the end of the first folding portion 710 under the action of the return spring 740, so as to achieve the purpose of rapid locking.

[0086] like Fig.11 As shown, the second supporting structure is provided with a strip-shaped limiting hole 810 along its length direction, and a tightening bolt 820 is provided at one end of the first supporting structure. The tightening bolt 820 is slidably connected in the strip-shaped limiting hole 810, and the tightening bolt 820 and the first supporting structure can be fixed with the strip-shaped limiting hole 810 when the tightening bolt 820 is tightened.

[0087] In order to facilitate the adjustment of the inclination angle of the second supporting structure, a strip-shaped limiting hole 810 extending along its length direction can be provided on the second supporting structure, and a tightening bolt 820 is provided along the left and right directions. The rod of the tightening bolt 820 is slidably connected in the strip-shaped limiting hole 810. By adjusting the position of the rod of the tightening bolt 820 in the strip-shaped limiting hole 810 and locking it, the inclination angle of the second supporting structure can be changed.

[0088] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fracture reduction device, characterized in that: The fracture reduction device comprises: a fixing frame (100), a driving mechanism (200), a proximal traction mechanism (300) and a distal traction mechanism (400), wherein the proximal traction mechanism (300) and the distal traction mechanism (400) are used to be connected to the proximal end and the distal end of the broken bone respectively; the driving mechanism (200) is connected to the fixing frame (100); One of the proximal traction mechanism (300) and the distal traction mechanism (400) is connected to the fixing frame (100), and the other is connected to the movable end of the driving mechanism (200); the driving mechanism (200) is used to drive the proximal traction mechanism (300) or the distal traction mechanism (400) connected thereto to move, so as to change the distance between the distal traction mechanism (400) and the proximal traction mechanism (300); The driving mechanism (200) comprises a shaft sleeve (210) fixedly connected to the fixing frame (100), a screw rod (220) movably connected to the shaft sleeve (210), and a driving member (230) threadedly connected to the screw rod (220), wherein the driving member (230) is axially fixed relative to the shaft sleeve (210), and the screw rod (220) forms the movable end; the driving member (230) is rotatable relative to the screw rod (220), so that the screw rod (220) can move axially under the rotation of the driving member (230); The movable end of the driving mechanism (200) and the proximal traction mechanism (300) or the distal traction mechanism (400) connected thereto are movably connected via a universal ball joint.

2. The fracture reduction device according to claim 1, characterized in that: The proximal traction mechanism (300) is connected to the fixing frame (100), and the distal traction mechanism (400) is connected to the movable end of the driving mechanism (200).

3. The fracture reduction device according to claim 1, characterized in that: The proximal traction mechanism (300) comprises a proximal puncture rod (320) and two support arms (310), and the proximal puncture rod (320) is movably sleeved on the two support arms (310) respectively; The two support arms (310) are both movably connected to the fixing frame (100), and the distance between the two support arms (310) is adjustable, so that the length of the portion of the proximal puncture rod (320) located between the two support arms (310) is adjustable.

4. The fracture reduction device according to claim 3, characterized in that: A slider (330) is slidably connected to the support arm (310), the proximal puncture rod (320) is connected to the slider (330), and the sliding direction of the slider (330) is perpendicular to the proximal puncture rod (320).

5. The fracture reduction device according to claim 3, characterized in that: The fixing frame (100) is provided with a plug hole, and the support arm (310) comprises a shaft portion (311) for plugging into the plug hole, so that the proximal traction mechanism (300) can rotate toward or away from the location of the distal traction mechanism (400); The fixing frame (100) is provided with a locking member (340), and the locking member (340) is used to lock the shaft portion (311) and the fixing frame (100) during locking.

6. The fracture reduction device according to claim 5, characterized in that: Along the circumference of the shaft portion (311), the side wall of the shaft portion (311) has a plurality of planes connected end to end, and the planes are used to abut against the locking member (340).

7. The fracture reduction device according to claim 1, characterized in that: The fixing frame (100) comprises a first supporting structure, a second supporting structure and a third supporting structure which are connected end to end in sequence, and any two of the three are hinged; The proximal traction mechanism (300) and the distal traction mechanism (400) are respectively connected to two ends of the second support structure, and the first support structure is close to the proximal traction mechanism (300) and far away from the distal traction mechanism (400); The length of the first supporting structure and / or the second supporting structure is adjustable, so that the inclination angle of the second supporting structure is adjustable.

8. The fracture reduction device according to claim 7, characterized in that: The second supporting structure includes a main body, and a first fixing portion and a second fixing portion respectively hinged at two ends of the main body, so that the first fixing portion and the second fixing portion can rotate toward or away from each other; The proximal traction mechanism (300) and the distal traction mechanism (400) are connected to the first fixing part and the second fixing part respectively.

9. The fracture reduction device according to claim 8, characterized in that: The second fixing portion comprises two parallel and spaced lower connecting arms (522), and a cross bar (524) respectively connected to the two lower connecting arms (522); the distal traction mechanism (400) is connected to the cross bar (524); the cross bar (524) is movably connected to the lower connecting arms (522) so that the height position of the cross bar (524) is adjustable.

10. The fracture reduction device according to claim 9, characterized in that: Along the length direction of the lower connecting arm (522), a plurality of slots (610) are arranged at intervals on the lower connecting arm (522), and clamping bolts (620) are threadedly connected to both ends of the cross bar (524), and the clamping bolts (620) include a rod portion and a cap portion, and the rod portion is clamped in the slot (610), and the end surfaces of the cap portion and the cross bar (524) are used to clamp the opposite side walls of the lower connecting arm.

11. The fracture reduction device according to claim 10, characterized in that: A first tooth structure (630) is provided on the end surface of the crossbar (524), and a second tooth structure (640) for meshing with the first tooth structure (630) is provided on the inner end surface of the slot (610).

12. The fracture reduction device according to claim 9, characterized in that: The first fixing portion comprises two upper connecting arms (523) which are parallel and spaced apart, and the proximal traction mechanism (300) is connected to the two upper connecting arms (523); Each of the upper connecting arm and the lower connecting arm comprises a first folding portion (710) and a second folding portion (720), and one end of the first folding portion (710) is hinged to the main body; The other end of the first folding portion (710) is hinged to the second folding portion (720), so that the second folding portion (720) on one of the upper connecting arms can rotate toward the position of the other upper connecting arm, and the second folding portion (720) on one of the lower connecting arms can rotate toward the position of the other lower connecting arm; The first folding portion (710) and the second folding portion (720) are correspondingly provided with clamping structures, and the clamping structures are used to prevent the first folding portion (710) and the second folding portion (720) from rotating relative to each other when the first folding portion (710) and the second folding portion (720) are in the same straight line.

13. The fracture reduction device according to claim 12, characterized in that: A clamping sleeve (730) is movably sleeved on the second folding portion (720); the clamping sleeve (730) can move along the length direction of the second folding portion (720) and can be sleeved with the first folding portion (710) and the second folding portion (720) at the same time.

14. The fracture reduction device according to claim 13, characterized in that: A return spring (740) is provided between the second folding portion (720) and the clamping sleeve (730), and the return spring (740) is used to drive the clamping sleeve (730) toward the first folding portion (710).

15. The fracture reduction device according to claim 7, characterized in that: The second supporting structure is provided with a strip-shaped limiting hole (810) along its length direction, and a tightening bolt (820) is provided at one end of the first supporting structure. The tightening bolt (820) is slidably connected in the strip-shaped limiting hole (810), and the tightening bolt (820) and the first supporting structure can be fixed with the strip-shaped limiting hole (810) when the tightening bolt (820) is tightened.

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