CN210354873U

CN210354873U - Fracture dislocation correction traction device

Info

Publication number: CN210354873U
Application number: CN201920899791.4U
Authority: CN
Inventors: 王咏梅
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-15
Filing date: 2019-06-15
Publication date: 2020-04-21
Anticipated expiration: 2029-06-15

Abstract

A fracture dislocation correction traction device comprises a positioning mechanism, wherein the positioning mechanism comprises a guide cylinder, a connecting block is fixed on the guide cylinder, the connecting block is fixedly assembled with one end of a first adjusting rod, and the other end of the first adjusting rod is arranged in a first adjusting groove; the first adjusting groove is arranged in the adjusting cylinder, the first bolt penetrates through the adjusting cylinder and then is tightly propped against the first adjusting rod, and the first bolt is assembled with the adjusting cylinder in a screwing manner through threads; a sliding block is fixed on the adjusting cylinder, a second adjusting groove is formed in the sliding block, the second adjusting groove and a second adjusting rod can be assembled in a sliding mode, and a second bolt penetrates through the sliding block and then is tightly propped against the second adjusting rod; the pull buckle is assembled with the hook buckle in a hooking mode, the hook buckle is fixed to one end of the pull rope, the other end of the pull rope is assembled and fixed with the winding wheel and is wound on the winding wheel, and the winding wheel belongs to the traction mechanism. The utility model discloses simple structure, and lead, fix a position self-tapping screw through the guide cylinder to can guarantee that two self-tapping screws are on same straight line, self-tapping screw can not beat askewly moreover.

Description

Fracture dislocation correction traction device

Technical Field

The utility model relates to a medical instrument, in particular to a fracture dislocation correction traction device.

Background

For orthopedic diseases such as fracture, joint dislocation, arthritis and the like, bone traction is needed to correct fracture contraction and displacement to restore the fracture, stabilize the fracture broken end to relieve pain and facilitate fracture healing, restore dislocated joints, maintain the force line of limbs and the braking of the fracture broken end to prevent pathological fracture or reduce inflammation diffusion and secondary injury, correct and prevent joint flexion contracture deformity, relieve muscle spasm and improve venous blood reflux, enable the joints to be placed in functional positions, facilitate observation, flushing and dressing change of wounds of affected limbs and facilitate nursing of patients.

The applicant finds that the conventional traction skin traction and bone traction have the defects in the actual operation process, the skin traction force is weak, the skin of the fixed limb is not firm, and the skin is easy to loosen at any time; the conventional bone traction system directly penetrates a steel needle (Kirschner wire or Steiner wire) into the bone, and then the tail end of the traction bow is tied with a rope belt for traction, so that the defects that the steel needle is easy to deflect when being penetrated, the bone cortex in front of the puncture part is too thin, the fracture traction is easy to fail, the steel needle is required to be assisted by an electric drill when being penetrated, a hard connecting device/the traction bow compresses the skin of the limb to generate pressure sores, the short traction rope of the traction bow can be blocked by the limb part and the like are overcome.

When the steel needle is inserted, a doctor can only judge whether the steel needle is deflected or not according to experience, and if the steel needle is deflected, the treatment effect is obviously influenced. In addition, during traction, a hard connecting device/traction bow is generally adopted to maintain force application, and in the process, the hard connecting device can generate large compression force on the skin and muscle of a patient, sometimes even crush the skin, and thus secondary trauma is caused.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a fracture dislocation correction draw gear is provided, avoid the steel needle to put into, run through the drawback of skeleton, and the self-tapping screw through both sides is convenient to be implanted, sets up soft adjustable connecting rod/traction bow and avoids causing the oppression to the limbs position at the traction in-process.

In order to achieve the purpose, the utility model provides a fracture dislocation correction traction device, which comprises a positioning mechanism and a traction mechanism, wherein the positioning mechanism comprises a guide cylinder, a pull buckle and a connecting block are respectively fixed on the guide cylinder, the connecting block is assembled and fixed with one end of a first adjusting rod, and the other end of the first adjusting rod is arranged in a first adjusting groove and can be assembled with the first adjusting groove in a sliding way;

the first adjusting groove is arranged in the adjusting cylinder, a first bolt penetrates through the adjusting cylinder and then is tightly propped against the first adjusting rod, and the first bolt is assembled with the adjusting cylinder in a screwing manner through threads; a sliding block is fixed on the adjusting cylinder, a second adjusting groove is formed in the sliding block, the second adjusting groove and a second adjusting rod can be assembled in a sliding mode, and a second bolt penetrates through the sliding block and then is tightly propped against the second adjusting rod;

the pull buckle is assembled with the hook buckle in a hooking mode, the hook buckle is fixed to one end of the pull rope, the other end of the pull rope is fixedly assembled with the winding wheel and wound on the winding wheel, and the winding wheel belongs to the traction mechanism.

Preferably, the second adjusting rod is provided with limiting blocks at two ends thereof, the third bolt penetrates through the limiting blocks and then is screwed with the second adjusting rod through threads to be assembled and fixed, and the second adjusting groove cannot penetrate through the limiting blocks.

Preferably, a guide hole, a transition hole and a large hole are formed in the guide cylinder, the transition hole is used for connecting the guide hole and the large hole in a transition mode, and the diameter of the guide hole is the same as the outer diameter of the tapping screw;

a sleeve is arranged in the large hole, a first sleeve hole and a second sleeve hole are arranged in the sleeve, the tip end and the self-tapping thread part of the self-tapping screw penetrate through the first sleeve hole and the second sleeve hole and then penetrate out of the guide hole, and the large end of the self-tapping screw is arranged in the first sleeve hole;

the large end and the first sleeve hole cannot rotate circumferentially relatively, and the large end cannot penetrate through the second sleeve hole.

Preferably, the end of the self-tapping screw penetrating the bone is a tip, the end far away from the tip is fixed with a large end, a self-tapping thread part is arranged between the tip and the large end, and self-tapping threads are arranged on the self-tapping thread part.

Preferably, the sleeve outer wall is provided with a thread part, and the thread screwing direction of the thread part is the same as the thread screwing-out screwing direction of the self-tapping thread.

Preferably, the tip has a plurality of grooves disposed along the axis.

Preferably, the traction mechanism further comprises an upper fixed plate, a lower fixed plate and a fixed connecting plate, the fixed connecting plate is fixedly assembled with the upper fixed plate and the lower fixed plate respectively, and the winding wheel is installed between the upper fixed plate and the lower fixed plate; a traction buckle is fixed on the fixed connecting plate;

the winding wheel is fixed on the rotating shaft, the rotating shaft is rotatably assembled with the upper fixing plate and the lower fixing plate respectively, one end of the rotating shaft penetrates through the upper fixing plate and then is assembled and fixed with the ratchet wheel, a knob is fixed on the ratchet wheel, a backstop groove is formed in the ratchet wheel, the backstop groove can be tightly clamped and assembled with one end of the pawl, the other end of the pawl is rotatably assembled with the upper fixing plate and the supporting plate respectively through a pin shaft, and the supporting plate is fixed on the upper fixing plate; the supporting plate is connected with the pawl through a spring.

Preferably, a reset cylinder is fixed on the lower fixing plate, a hollow inner cylinder is arranged in the reset cylinder, a pressure spring is installed in the inner cylinder, the pressure spring and a piston block are assembled in a sliding mode, the piston block is fixed on one end of a stop rod, the other end of the stop rod penetrates through the upper fixing plate, an inclined plane is arranged on one end of the upper fixing plate, and the inclined plane is arranged from bottom to top in a direction from a supporting plate to a pin shaft.

Preferably, the stop lever is provided with a driving head for grasping by hand and then driving the stop lever to move down.

Preferably, the pull rope is provided with scales, the zero point of the scales is located at the position of the buckle, and the length of the pull rope from the buckle can be read out through the fixed connecting plate corresponding to the scales.

The utility model has the advantages that:

1. the utility model discloses simple structure, and lead, fix a position self-tapping screw through the guide cylinder to can guarantee two self-tapping screws on same straight line, self-tapping screw can not incline moreover, avoids the tradition to put into the trouble of steel needle.

2. The utility model discloses a self-tapping screw adopts the front end to be pointed end, mid portion for self-tapping's design, during the use, directly impales the bone through pointed end, then by the self-tapping to can greatly reduced to the injury area of bone, also improved the efficiency of putting into self-tapping screw moreover greatly.

3. The utility model discloses an adjustable soft connecting device/traction bow to the adjustable direction fixing device application of force of self-tapping screw, and the stay cord can not oppress skin to prevent to pull the in-process and produce the injury that forms to the patient.

Drawings

Fig. 1 is a schematic view of the usage state of the present invention.

Fig. 2 is a schematic view of the usage state of the present invention.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a schematic structural diagram of the positioning mechanism of the present invention.

Fig. 5 is a schematic structural view of the guide cylinder of the present invention.

Fig. 6 is a schematic structural view of the traction mechanism of the present invention.

Fig. 7 is a schematic structural view of the traction mechanism of the present invention.

Fig. 8 is a schematic structural view of the traction mechanism of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 being 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.

Referring to fig. 1 to 7, the traction device for correcting dislocation of bone fracture of the present embodiment includes a positioning mechanism 100 and a traction mechanism 200, wherein the positioning mechanism 100 includes a guiding cylinder 110, a pulling buckle 130 and a connecting block 120 are respectively fixed on the guiding cylinder 110, the connecting block 120 is fixedly assembled with one end of a first adjusting rod 140, and the other end of the first adjusting rod 140 is installed in a first adjusting groove 151 and slidably assembled therewith;

the first adjusting groove 151 is disposed in the adjusting cylinder 150, the first bolt 160 penetrates through the adjusting cylinder 150 and then abuts against the first adjusting rod 140, and the first bolt 160 and the adjusting cylinder 150 are assembled by screwing through threads, so that the first adjusting rod 140 and the adjusting cylinder 150 are relatively fixed.

A sliding block 450 is fixed on the adjusting cylinder 150, a second adjusting groove 451 is formed in the sliding block 450, the second adjusting groove 451 and the second adjusting rod 410 are slidably assembled, and the second bolt 440 penetrates through the sliding block 450 and then is tightly pressed against the second adjusting rod 410, so that the sliding block 450 and the second adjusting rod 410 are relatively fixed;

the two ends of the second adjusting rod 410 are respectively provided with a limiting block 420, the third bolt 430 penetrates through the limiting block 420 and then is screwed with the second adjusting rod 410 to be assembled and fixed, and the second adjusting groove 451 cannot penetrate through the limiting block 420.

The guide cylinder 110 is internally provided with a guide hole 111, a transition hole 112 and a large hole 113, the transition hole 112 is used for transitionally connecting the guide hole 111 and the large hole 113, and the diameter of the guide hole 111 is the same as the outer diameter of the tapping screw 610, so that the guide hole 111 guides the tapping screw 610 to prevent the tapping screw from being askew.

The end of the self-tapping screw 610 penetrating the bone 500 is a tip 611, a large end 613 is fixed on the end far away from the tip 611, a self-tapping thread part 612 is arranged between the tip 611 and the large end 613, and self-tapping threads are arranged on the self-tapping thread part 612; the bone 500 is shown in exaggerated form in fig. 1-2, and is enlarged by a factor of 3.

A sleeve 620 is arranged in the large hole 113, a first sleeve hole 621 and a second sleeve hole 622 are arranged in the sleeve 620, the tip end 611 and the self-tapping thread part 612 of the self-tapping screw 610 penetrate through the first sleeve hole 621 and the second sleeve hole 622 and then penetrate out of the guide hole 111, and the large end 613 is arranged in the first sleeve hole 621;

the large end 613 cannot rotate circumferentially relative to the first sleeve hole 621, and the large end 613 cannot pass through the second sleeve hole 622. In this embodiment, the outer wall of the cross section of the large end 613 is hexagonal, and the inner wall of the cross section of the first sleeve hole 621 is hexagonal and attached to the large end 613, so that the self-tapping screw 610 can be driven to rotate circumferentially when the sleeve rotates.

The tip 611 is provided with a plurality of grooves arranged along the axis, and the design can increase the puncture force of the tip 611 and greatly reduce the injury area to the bone, similar to the existing cement steel nail.

When the self-tapping screw is used, the two guide cylinders are firstly attached to two sides of a bone needing tapping screws respectively, at the moment, the two guide holes 111 can be ensured to be coaxial through the second adjusting rod 410, then the position of the sliding block 450 is adjusted, the end faces of the two guide cylinders are respectively pressed with skin, then the first adjusting rod 140 is adjusted, the second adjusting rod 410 is attached to a part needing puncturing, and therefore the second adjusting rod 410 is prevented from being inclined.

The tapping screw is then inserted through the sleeve 620 and then into the guide cylinder 110, the large end is tapped so that the tip 611 penetrates the bone, and then the tapping screw is driven to rotate circumferentially by an alien wrench so that the tapping screw portion 612 taps the bone through the tapping screw until the desired depth is reached.

The outer wall of the sleeve 620 is provided with a threaded portion having a thread screwing direction identical to a thread screwing-out screwing direction of the self-tapping thread. When it is necessary to remove the tapping screw 610, an external hexagonal wrench is fitted into the first sleeve hole 621, and the threaded portion is threadedly fitted to an external device. Finally, the sleeve and the tapping screw are driven to rotate in the circumferential direction, so that the tapping screw exits from the bone through the self threads, the tapping screw is convenient to use, external equipment is screwed with the threaded part to apply axial outward pulling force to the sleeve 620, and therefore the taking-out efficiency of the tapping screw can be greatly improved. Compare with the mode that traditional directness set up hexagon socket hole on the main aspects, the mating force when self-tapping screw takes out can be increased in telescopic design, owing to axial tension in addition takes out the in-process moreover for self-tapping screw can take out the bone fast.

The pull buckle 130 is assembled with a hook buckle in a hooking manner, the hook buckle is fixed at one end of a pull rope 310, the other end of the pull rope 310 is assembled and fixed with a winding wheel 280 and is wound on the winding wheel 280, the winding wheel 280 belongs to a traction mechanism, the traction mechanism further comprises an upper fixing plate 221, a lower fixing plate 222 and a fixing connecting plate 223, the fixing connecting plate 223 is respectively assembled and fixed with the upper fixing plate 221 and the lower fixing plate 222, and the winding wheel 280 is installed between the upper fixing plate 221 and the lower fixing plate 222; the fixed connecting plate 223 is fixed with a traction buckle 210;

the winding wheel 280 is fixed on a rotating shaft 241, the rotating shaft 241 is rotatably assembled with the upper fixing plate 221 and the lower fixing plate 222 respectively, one end of the rotating shaft 241 penetrates through the upper fixing plate 221 and then is assembled and fixed with the ratchet wheel 232, a knob 231 is fixed on the ratchet wheel 232, a backstop slot 2321 is arranged on the ratchet wheel 232, the backstop slot 2321 can be tightly assembled with one end of a pawl 260, the other end of the pawl 260 is rotatably assembled with the upper fixing plate 221 and the support plate 250 through a pin shaft 242 respectively, and the support plate 250 is fixed on the upper fixing plate 221;

the support plate 250 is connected to the pawl 260 by a spring 270, so that the pawl 260 is ratcheted by the spring 270.

A reset cylinder 710 is fixed on the lower fixing plate 222, a hollow inner cylinder 711 is arranged in the reset cylinder 710, a pressure spring 740 is installed in the inner cylinder 711, the pressure spring 740 and a piston block 730 can be assembled in a sliding manner, the piston block 730 is fixed on one end of a stop rod 720, the other end of the stop rod 720 penetrates through the upper fixing plate 221, an inclined surface 721 is arranged at one end of the upper fixing plate 221, and the inclined surface 721 is arranged from the lower part to the upper part from the support plate 250 to the pin shaft 242;

the stop lever 720 is provided with a driving head 722, and the driving head 722 is used for grasping by hands and then driving the stop lever 720 to move downwards.

When the length of the pull rope 310 needs to be adjusted, the pawl 260 is firstly rotated in the direction away from the ratchet wheel 232, so that the pawl 260 drives the stop lever 720 to move downwards through the inclined surface 721 and overcome the elastic force of the pressure spring until the pawl 260 passes through the inclined surface 721, and then the stop lever 720 moves upwards under the action of the pressure spring, so that the pawl 260 cannot restore to the initial state;

then, the winding wheel is rotated by the knob 231 to wind the rope 310 until a desired length is reached, and the stopping rod 720 is driven by a hand to move downward against the elastic force of the spring, so that the pawl returns to the initial state and is engaged with the retaining groove 2321. Finally, the pulling force is generated to the pulling rope through the pulling button 210 to pull the self-tapping screw, thereby driving the bone to be reset.

The pull rope 310 is provided with scales, the zero point of the scales is located at the position of the hanging buckle, and when the pull rope 310 is used, the length of the pull rope 310 can be read out through the fixed connecting plate 223 corresponding to the scales. The design is mainly used for the condition that the lengths of the two pull ropes 310 are different, and the length difference of the two pull ropes 310 can be read through the scales, so that an operator can conveniently and quickly confirm the length difference, and the use efficiency is improved.

The details of the present invention are well known to those skilled in the art.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a fracture dislocation corrects draw gear which characterized by: the positioning mechanism comprises a guide cylinder, a pull buckle and a connecting block are respectively fixed on the guide cylinder, the connecting block is fixedly assembled with one end of a first adjusting rod, and the other end of the first adjusting rod is arranged in a first adjusting groove and is assembled with the first adjusting groove in a sliding manner;

2. The distraction device for the correction of fracture dislocation of claim 1, wherein: the second is adjusted the pole both ends and is installed the stopper respectively, and the third bolt passes behind the stopper and closes the assembly soon with the second and fix through the screw thread, the second adjustment tank can not pass the stopper.

3. The distraction device for the correction of fracture dislocation of claim 1, wherein: a guide hole, a transition hole and a large hole are formed in the guide cylinder, the transition hole is used for connecting the guide hole and the large hole in a transition mode, and the diameter of the guide hole is the same as the outer diameter of the tapping screw;

4. The distraction device for the correction of fracture dislocation of claim 3, wherein: the bone self-tapping screw is characterized in that one end, penetrating a bone, of the self-tapping screw is a tip end, a large end is fixed on the end far away from the tip end, a self-tapping thread part is arranged between the tip end and the large end, and self-tapping threads are arranged on the self-tapping thread part.

5. The distraction device for the correction of fracture dislocation of claim 3, wherein: the outer wall of the sleeve is provided with a thread part, and the screwing direction of the thread part is the same as the screwing-out screwing direction of the self-tapping thread.

6. The distraction device for the correction of fracture dislocation of claim 5, wherein: the tip has a plurality of flutes disposed along an axis.

7. The distraction device for the correction of fracture dislocation of claim 1, wherein: the traction mechanism also comprises an upper fixed plate, a lower fixed plate and a fixed connecting plate, the fixed connecting plate is respectively assembled and fixed with the upper fixed plate and the lower fixed plate, and the winding wheel is arranged between the upper fixed plate and the lower fixed plate; a traction buckle is fixed on the fixed connecting plate;

8. The distraction device for the correction of fracture dislocation of claim 7, wherein: the lower fixing plate is fixedly provided with a reset cylinder, a hollow inner cylinder is arranged in the reset cylinder, a pressure spring is installed in the inner cylinder, the pressure spring and a piston block are assembled in a sliding mode, the piston block is fixed to one end of a stop rod, the other end of the stop rod penetrates through the upper fixing plate, an inclined surface is arranged at one end of the upper fixing plate, and the inclined surface is formed by inclining downwards to the upward direction from a support plate to a pin shaft.

9. The distraction device for correcting fracture dislocation of claim 8, wherein: the stop rod is provided with a driving head, and the driving head is used for grasping by hands and then driving the stop rod to move downwards.

10. The distraction device for the correction of fracture dislocation of claim 7, wherein: the pull rope is provided with scales, the zero point of the scales is located at the position of the hanging buckle, and the length of the pull rope from the pull buckle can be read out through the correspondence of the fixed connecting plate and the scales.