CN221469969U - External fixation fracture reduction device - Google Patents

Abstract

The utility model belongs to the technical field of medical devices. In order to solve the problems of manual operation of reduction forceps, which causes difficulty in reduction or causes soft tissue damage to patients, the utility model discloses an external fixation fracture reducer, which includes a first fixing part, a second fixing part, an external fixing screw and a traction part; the first fixing part and the second fixing part are respectively arranged at the two ends of the traction part; the traction part includes a first traction unit, a second traction unit and an adjustment device; the first traction unit and the second traction unit are plugged; one end of the adjustment device is threadedly connected to the first traction unit, and the other end is rotatably connected to the second traction unit; the first fixing part is rotatably connected to the first traction unit; the second fixing part is rotatably connected to the second traction unit; the external fixing screw is detachably connected to the first fixing part and the second fixing part respectively. By externally adjusting the positions of the first fixing part and the second fixing part, the position of the broken bone is adjusted, and the reduction method is relatively simple and can effectively avoid soft tissue damage to patients.

Description

External fixation fracture reducer

Technical Field

The utility model belongs to the technical field of medical instruments, and in particular relates to a broken bone repositioner.

Background technique

Fracture refers to the complete or partial break in the continuity of bone structure. Patients usually have a single fracture, and a few have multiple fractures. With timely and appropriate treatment, most patients can recover their original function, but a few patients may have sequelae of varying degrees.

After a patient suffers from a limb fracture, the fracture needs to be reduced during surgery. Currently, the operation is performed manually with reduction forceps, which may cause soft tissue incarceration, fracture impaction, and scar hyperplasia, causing problems such as difficulty in reduction or causing soft tissue damage to the patient.

In view of the above problems, the utility model provides an external fixation fracture reducer.

Utility Model Content

In order to overcome the problems raised in the background technology, the utility model provides an external fixation fracture reducer.

An external fixation fracture reducer comprises a first fixing part, a second fixing part, an external fixing screw and a traction part; the first fixing part and the second fixing part are respectively arranged at two ends of the traction part; the traction part comprises a first traction unit, a second traction unit and an adjusting device; the first traction unit and the second traction unit are plugged into each other; one end of the adjusting device is threadedly connected to the first traction unit, and the other end is rotatably connected to the second traction unit; the first fixing part is rotatably connected to the first traction unit; the second fixing part is rotatably connected to the second traction unit; the external fixing screw is detachably connected to the first fixing part and the second fixing part, respectively.

Furthermore, the traction portion further includes a first limiting structure and a second limiting structure; the first limiting structure is threadedly connected to the first traction unit; and the second limiting structure is threadedly connected to the second traction unit.

Further, the first traction unit includes a screw, a first rotating member, a first limiting shaft and a first rotating shaft; one end of the screw is fixedly connected to the first rotating member, and the other end is threadedly connected to the adjusting device; the first limiting shaft and the first rotating shaft are respectively arranged at two ends of the first rotating member; the axis of the first limiting shaft coincides with the axis of the first rotating shaft; the first rotating member is rotatably connected to the first fixed part through the first limiting shaft and the first rotating shaft; the first limiting shaft is threadedly connected to the first limiting structure after passing through the first fixed part.

Furthermore, the second traction unit includes a second rotating member, a second limiting shaft and a second rotating shaft; the interior of the second rotating member is provided with an adjustment passage adapted to the first traction unit; the second limiting shaft and the second rotating shaft are respectively arranged at two ends of the second rotating member; the axis of the second limiting shaft coincides with the axis of the second rotating shaft; the second rotating member is rotatably connected to the second fixed part through the second limiting shaft and the second rotating shaft; the second limiting shaft is threadedly connected to the second limiting structure after passing through the second fixed part.

Furthermore, the traction portion further comprises a limiting structure; the limiting structure is threadedly connected to the second traction unit; and the limiting structure abuts against the first traction unit after passing through the second traction unit.

Furthermore, the adjusting device comprises an adjusting sleeve; one end of the adjusting sleeve is threadedly connected to the first traction unit, and the other end of the adjusting sleeve is rotatably connected to the second traction unit.

Furthermore, the second traction unit includes a first installation position; and the adjusting sleeve is rotatably connected to the adjusting sleeve.

Furthermore, the adjustment device further comprises an adjustment knob, the outer side of the adjustment knob is engaged with the adjustment sleeve, and the inner side of the adjustment knob is rotationally connected with the second traction unit.

Furthermore, the second traction unit includes a second mounting position; the second mounting position is rotatably connected to the adjustment knob.

Furthermore, the first fixing portion and the second fixing portion are both threadedly connected to the external fixing screw.

The beneficial effects of the utility model are as follows: the first fixing part and the second fixing part at both ends of the traction part are fixed to the distal end of the fracture through external fixing screws; an adjustment device is provided inside the traction part, which can adjust the distance between the first fixing part and the second fixing part; the traction part is connected to the first fixing part and the second fixing part to realize a lockable rotation connection, so as to adjust the angle between the first fixing part and the second fixing part. The overall effect of the opening force on the fracture is realized, and the traction and rotation reduction of the fracture ends are assisted; the position of the broken bone is adjusted by externally adjusting the position of the first fixing part and the second fixing part, and the reduction method is relatively simple and can effectively avoid soft tissue damage to the patient, which is convenient for the doctor to operate and reduces the harm to the patient.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view of a fracture reducer for implementing the utility model;

FIG2 is a perspective view of a fracture reducer implementing the utility model;

FIG3 is a top view of a fracture reducer implementing the utility model;

FIG4 is an exploded view of a fracture reducer implementing the utility model;

FIG5 is a perspective view of a first traction unit implementing the present utility model;

FIG6 is a perspective view of a second traction unit implementing the present invention;

In the figure, 1, first fixing part; 2, second fixing part; 3, external fixing screw; 4, traction part; 11, first rotating bracket; 21, second rotating bracket; 41, first traction unit; 42, second traction unit; 43, first limiting structure; 44, second limiting structure; 45, limiting structure; 46, adjusting knob; 47, adjusting sleeve; 411, first limiting axis; 412, screw; 413, first rotating shaft; 414, first rotating member; 421, adjusting passage; 422, first mounting position; 423, second mounting position; 424, third mounting position; 425, second limiting axis; 426, second rotating shaft; 427, second rotating member; 428, sleeve.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "top", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

An external fixation fracture reducer as shown in Figures 1-6 includes a first fixing part 1, a second fixing part 2, an external fixing screw 3 and a traction part 4; the first fixing part 1 and the second fixing part 2 are respectively arranged at the two ends of the traction part 4; the traction part 4 includes a first traction unit 41, a second traction unit 42 and an adjusting device; the first traction unit 41 is plugged into the second traction unit 42; one end of the adjusting device is threadedly connected to the first traction unit 41, and the other end is rotatably connected to the second traction unit 42; the first fixing part 1 is rotatably connected to the first traction unit 41; the second fixing part 2 is rotatably connected to the second traction unit 42; the external fixing screw 3 is detachably connected to the first fixing part 1 and the second fixing part 2, respectively, and the first fixing part 1 and the second fixing part 2 located at the two ends of the traction part 4 are fixed to the distal end of the fracture by the external fixing screw 3.

Specifically, the first fixing part 1 is provided with a first rotating bracket 11, the first pulling unit 41 is rotatably connected to the first rotating bracket 11, and the first fixing part 1 is fixedly connected to the first rotating bracket 11. The second fixing part 2 is provided with a second rotating bracket 21, the second pulling unit 42 is rotatably connected to the second rotating bracket 21, and the second fixing part 2 is fixedly connected to the second rotating bracket 21.

Furthermore, as shown in FIGS. 1-6 , the first fixing portion 1 and the second fixing portion 2 are both threadedly connected to the external fixing screw 3 .

Alternatively, both the first fixing portion 1 and the second fixing portion 2 are snap-connected to the external fixing screw 3 .

Although the present embodiment only provides two methods of connection between the first fixing part 1 and the second fixing part 2 and the external fixing screw 3, that is, threaded connection or snap connection, a solution derived by those skilled in the art that the first fixing part 1 and the second fixing part 2 are detachably connected to the external fixing screw 3 based on this still does not depart from the spirit and scope of the present invention.

The adjustment device can adjust the distance between the first fixing part 1 and the second fixing part 2; the traction part 4 is connected to the first fixing part 1 and the second fixing part 2 to realize lockable rotation, so as to adjust the angle between the first fixing part 1 and the second fixing part 2. The whole realizes the effect of distraction force on the fracture, assists the traction and rotation reduction of the fracture ends; by externally adjusting the positions of the first fixing part 1 and the second fixing part 2, the position of the fractured bone is adjusted, the reduction method is relatively simple and can effectively avoid soft tissue damage to the patient, which is convenient for the doctor to operate and reduces the harm to the patient.

In some embodiments of the present application, the traction portion 4 further includes a first limiting structure 43 and a second limiting structure 44; the first limiting structure 43 is threadedly connected to the first traction unit 41; the second limiting structure 44 is threadedly connected to the second traction unit 42. The function of the first limiting structure 43 is to lock the angle between the first traction unit 41 and the first fixing portion 1. The function of the second limiting structure 44 is to lock the angle between the second traction unit 42 and the second fixing portion 2. Under the joint action of the first limiting structure 43 and the second limiting structure 44, the angle between the first fixing portion 1 and the second fixing portion 2 can be locked.

Furthermore, the first traction unit 41 includes a screw 412, a first rotating member 414, a first limiting shaft 411 and a first rotating shaft 413; one end of the screw 412 is fixedly connected to the first rotating member 414, and the other end is threadedly connected to the adjusting device; the first limiting shaft 411 and the first rotating shaft 413 are respectively arranged at two ends of the first rotating member 414; the axis of the first limiting shaft 411 and the first rotating shaft 413 coincide; the first rotating member 414 is rotatably connected to the first rotating bracket 11 through the first limiting shaft 411 and the first rotating shaft 413; the first limiting shaft 411 passes through the first fixed part 1 and is threadedly connected to the first limiting structure 43.

By loosening the first limiting structure 43, the first rotating member 414 can be rotated inside the first rotating bracket 11 with the first limiting axis 411 and the first rotating axis 413 as the axis center to adjust the angle between the first traction unit 41 and the first fixing portion 1. By tightening the first limiting structure 43, the first limiting structure 43 presses the first rotating member 414 against the inner side wall of the first rotating bracket 11, and the friction force is used to limit the posture of the first rotating member 414, thereby locking the angle between the first traction unit 41 and the first fixing portion 1.

Similarly, the second traction unit 42 includes a second rotating member 427, a second limiting shaft 425 and a second rotating shaft 426; the interior of the second rotating member 427 is provided with an adjustment passage 421 adapted to the screw 412; the second limiting shaft 425 and the second rotating shaft 426 are respectively arranged at the two ends of the second rotating member 427; the axis of the second limiting shaft 425 and the second rotating shaft 426 coincide; the second rotating member 427 is rotatably connected to the second fixed part 2 through the second limiting shaft 425 and the second rotating shaft 426; the second limiting shaft 425 passes through the second fixed part 2 and is threadedly connected to the second limiting structure 44.

Specifically, the regulating passage 421 is a through hole with a smooth interior.

By loosening the second limiting structure 44, the second rotating member 427 can be rotated inside the second rotating bracket 21 with the second limiting axis 425 and the second rotating axis 426 as the axis, so as to adjust the angle between the second traction unit 42 and the second fixing portion 2. By tightening the second limiting structure 44, the second limiting structure 44 presses the second rotating member 427 against the inner side wall of the second rotating bracket 21, and the friction force is used to limit the posture of the second rotating member 427, thereby locking the angle between the second traction unit 42 and the second fixing portion 2.

In an adaptive embodiment of the present application, as shown in FIGS. 1-6 , the traction portion 4 further includes a limiting structure 45; the limiting structure 45 is threadedly connected to the second traction unit 42; the limiting structure 45 abuts against the first traction unit 41 after passing through the second traction unit 42. The purpose of the limiting structure 45 is to limit the distance between the first fixing portion 1 and the second fixing portion 2. During use, the limiting structure 45 is loosened, and the screw 412 can slide freely in the adjustment passage 421 to adjust the distance between the first fixing portion 1 and the second fixing portion 2. Tighten the limiting structure 45, and the limiting structure 45 abuts against the side wall of the screw 412, pushing the screw 412 against the inner wall of the adjustment passage 421, and applying friction to limit the posture of the screw 412, thereby locking the distance between the first fixing portion 1 and the second fixing portion 2.

In some examples of the present application, the adjustment device includes an adjustment sleeve 47. One end of the adjustment sleeve 47 is threadedly connected to the first traction unit 41, and the other end is rotatably connected to the second traction unit 42. By loosening the limiting structure 45 and rotating the adjustment sleeve 47, the first fixing part 1 can be driven to move toward or away from the second fixing part 2, so as to gradually adjust the distance between the first fixing part 1 and the second fixing part 2, so as to observe the wound and broken bone during the adjustment process.

Specifically, the second traction unit 42 includes a sleeve 428 and a first mounting position 422. One end of the sleeve 428 is fixedly connected to the first mounting position 422, and the other end is fixedly connected to the second rotating member 427. The interior of the sleeve 428 is connected to the adjustment passage 421. The adjustment sleeve 47 is rotatably connected to the adjustment sleeve 47.

In a specific example of the present application, the adjusting device further includes an adjusting knob 46, the outer side of the adjusting knob 46 is engaged with the adjusting sleeve 47, and the inner side is rotatably connected to the second traction unit 42. Rotating the adjusting knob 46 can drive the adjusting sleeve 47 to rotate, driving the screw 412 to move, so as to adjust the distance between the first fixing part 1 and the second fixing part 2.

Specifically, a first beveled tooth surface is provided at one end of the adjusting knob 46 , and a second beveled tooth surface is provided at the outer side of the adjusting sleeve 47 , and the first beveled tooth surface meshes with the second beveled tooth surface.

Preferably, the number of teeth on the first bevel tooth surface is A, the number of teeth on the second bevel tooth surface is B, and A<B. This makes the angular velocity of the adjusting knob 46 greater than the angular velocity of the adjusting sleeve 47, thereby improving the adjustment accuracy of the adjusting device.

Specifically, the second traction unit 42 further includes a second mounting position 423 ; the second mounting position 423 is disposed on the side wall of the sleeve 428 , and the second mounting position 423 is rotatably connected to the adjustment knob 46 .

The use of the utility model:

1. Fix the first fixing part 1 and the second fixing part 2 at the distal end of the fracture by means of an external fixing screw 3;

2. Loosen the first limiting structure 43, the second limiting structure 44, and the limiting structure 45, and insert the screw 412 into the adjusting passage 421;

3. Adjust the angle between the first traction unit 41 and the first fixing portion 1, and the angle between the second traction unit 42 and the second fixing portion 2;

4. Use the adjusting device to adjust the distance between the first fixing part 1 and the second fixing part 2;

5. The first limiting structure 43 and the second limiting structure 44 are used to lock the angle between the first fixing part 1 and the second fixing part 2 , and the limiting structure 45 is used to lock the distance between the first fixing part 1 and the second fixing part 2 .

In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

The embodiments described in this application are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims (10)

1. An external fixation fracture reducer, comprising a first fixing part, a second fixing part, an external fixing screw and a traction part, characterized in that the first fixing part and the second fixing part are respectively arranged at two ends of the traction part; the traction part comprises a first traction unit, a second traction unit and an adjusting device; the first traction unit is plugged into the second traction unit; one end of the adjusting device is threadedly connected to the first traction unit, and the other end is rotatably connected to the second traction unit; the first fixing part is rotatably connected to the first traction unit; the second fixing part is rotatably connected to the second traction unit; the external fixing screw is detachably connected to the first fixing part and the second fixing part, respectively. 2. An external fixation fracture reducer according to claim 1, characterized in that the traction part also includes a first limiting structure and a second limiting structure; the first limiting structure is threadedly connected to the first traction unit; and the second limiting structure is threadedly connected to the second traction unit. 3. An external fixation fracture reducer according to claim 2 is characterized in that the first traction unit includes a screw, a first rotating member, a first limiting shaft and a first rotating shaft; one end of the screw is fixedly connected to the first rotating member, and the other end is threadedly connected to the adjusting device; the first limiting shaft and the first rotating shaft are respectively arranged at two ends of the first rotating member; the axis of the first limiting shaft coincides with the axis of the first rotating shaft; the first rotating member is rotatably connected to the first fixed part through the first limiting shaft and the first rotating shaft; the first limiting shaft is threadedly connected to the first limiting structure after passing through the first fixed part. 4. An external fixation fracture reducer according to claim 1 is characterized in that the second traction unit includes a second rotating member, a second limiting shaft and a second rotating shaft; the interior of the second rotating member is provided with an adjustment passage adapted to the first traction unit; the second limiting shaft and the second rotating shaft are respectively arranged at both ends of the second rotating member; the axis of the second limiting shaft and the second rotating shaft coincide; the second rotating member is rotatably connected to the second fixed part through the second limiting shaft and the second rotating shaft; the second limiting shaft is threadedly connected to the second limiting structure after passing through the second fixed part. 5. An external fixation fracture reducer according to claim 1, characterized in that the traction part further comprises a limiting structure; the limiting structure is threadedly connected to the second traction unit; the limiting structure passes through the second traction unit and abuts against the first traction unit. 6. An external fixation fracture reducer according to claim 1, characterized in that the adjustment device comprises an adjustment sleeve; one end of the adjustment sleeve is threadedly connected to the first traction unit, and the other end is rotatably connected to the second traction unit. 7. An external fixation fracture reducer according to claim 6, characterized in that the second traction unit comprises a first mounting position; and the adjusting sleeve is rotatably connected to the adjusting sleeve. 8. An external fixation fracture reducer according to claim 6, characterized in that the adjustment device further comprises an adjustment knob, the outer side of the adjustment knob is engaged with the adjustment sleeve, and the inner side of the adjustment knob is rotatably connected to the second traction unit. 9 . The external fixation fracture reducer according to claim 8 , wherein the second traction unit comprises a second mounting position; and the second mounting position is rotatably connected to the adjustment knob. 10. An external fixation fracture reducer according to any one of claims 1 to 9, characterized in that both the first fixing portion and the second fixing portion are threadedly connected to the external fixation screw.