CN211067259U

CN211067259U - Tension traction bow

Info

Publication number: CN211067259U
Application number: CN201921374901.1U
Authority: CN
Inventors: 童和安
Original assignee: Hefei Wuyang Medical Devices Co ltd
Current assignee: Hefei Wuyang Medical Devices Co ltd
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-07-24
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses a tension traction bow belongs to orthopedics medical instrument technical field, and the device convenient operation, the clamping-force are strong, the ke shi needle of adaptable various diameters just has self-locking function. The structure of the device comprises a propelling part, a supporting part and a clamping part. Wherein the propelling part consists of a knob wrench, an adjusting screw rod, a connecting rod and a movable transverse connection; the supporting part mainly comprises a fixed transverse connection and a traction rod; the clamping part mainly comprises a bolt and a nut which are arranged at two bottom ends of the supporting part, and a groove for accommodating the Kirschner wire is arranged on the bolt. The device is mainly characterized in that after the Kirschner wire is placed into the grooves at two ends, the nut is screwed to extrude the grooves to form a closed space, the Kirschner wire is extruded by the inner surface of the groove and the nut, the device has a stable self-locking function, and the defect that the dotted line contact is easy to loosen in the prior art is overcome; the space formed by the gasket pressing the groove can accommodate the use of a k-wire of any diameter no greater than the width of the groove opening.

Description

Tension traction bow

Technical Field

The utility model relates to a tension traction bow for orthopedic treatment, which belongs to the field of orthopedic medical instruments.

Background

Traction is often required in the treatment of orthopedic surgery and injuries, and a tension traction bow is one of the main instruments in traction treatment. Traction bows are typically used in: 1. the muscle tension can be resisted by using the device before operation, and the reduction of fracture is facilitated; 2. suspend the affected part to facilitate the detumescence; 3. the paper cutting effect can be prevented after long-term use, such as non-operative treatment. The cushion of traditional tension traction bow is mostly hole, slot or sawtooth card pressure structure, but this kind of structure clamping-force is not enough, the easy pine takes off, and can not be suitable for the different traction ke shi needle of thickness, can't satisfy the requirement of treatment.

The prior art with publication number CN201139662Y discloses a tension traction bow, which is characterized in that a needle pad and an eccentric wheel are arranged at a clamping end, and when the eccentric wheel rotates, the distance between a wheel rim and the needle pad can be changed, so that the tension traction bow is suitable for traction kirschner wires with various diameters. However, in this structure, since the kirschner wire is thin and the contact with the rim is similar to point contact, the force of the rotation of the eccentric wheel is difficult to straighten the kirschner wire, so that the kirschner wire is easy to bend and loosen.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model discloses improved on prior art's basis, provide a tensile traction bow that is fit for the use of the traction kirschner wire of various diameters, clamping-force are strong.

The technical scheme for solving the technical problems is as follows:

a tension traction bow comprises a propelling part, a supporting part and a clamping part arranged at the bottom of the supporting part; the method is characterized in that: bolts are respectively arranged at the two bottom ends of the supporting part, and grooves for accommodating traction kirschner wires are arranged on the rod bodies of the bolts; the clamping part also comprises a nut which is matched with the bolt to fix the traction kirschner wire.

Preferably, the groove is inclined, and an opening of the inclined groove is arranged to be biased to the nut.

Preferably, the clamping portion is further provided with a washer sleeved on the bolt on one side of the nut, which is deviated to the groove.

Preferably, the groove and the nut are disposed on the same side of the support portion.

Preferably, two bottom end portions of the supporting portion are respectively provided with a clamping hole, the bolt penetrates through the clamping holes, and the nut and the head portion of the bolt are respectively located on two sides of the supporting portion.

Preferably, the opening width of the groove is 3.5mm, and the depth is 5 mm.

Preferably, the support part comprises a fixed transverse connection and a draw bar movably arranged at two ends of the fixed transverse connection; the bolt is arranged at the bottom end part of the traction rod; the propelling part comprises an adjusting screw rod and a movable transverse connection, the adjusting screw rod penetrates through the fixed transverse connection to be connected with the movable transverse connection, two ends of the movable transverse connection are respectively provided with a connecting rod hinged with the movable transverse connection, and the other end of the connecting rod is hinged with the traction rod.

Preferably, one end of the adjusting screw rod, which is far away from the movable cross link, is provided with a knob wrench; the adjusting screw rod is in threaded fit with the fixed transverse connection.

Preferably, the draw bar is curved, and the concave parts of the curved arcs of the two draw bars are arranged oppositely.

Compared with the prior art, the invention has the beneficial effects that:

firstly, the contact surface of acting force is increased by a mode of extruding and fixing the kirschner wire through the groove and the gasket, so that the kirschner wire is tightly fixed and is not easy to loosen and bend;

secondly, the size of the groove can be matched with the kirschner wire with the diameter of 3.5mm or less, so that the requirements of different sizes of the kirschner wires in medical treatment are met;

thirdly, the adjusting screw is in threaded fit with the fixed cross connecting rod, so that the adjusting screw can be fixed, and the stability of the device is improved;

fourthly, the hinged connection mode enables the device to be simpler, smoother and labor-saving to operate;

drawings

FIG. 1 is an overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of the structure of the present invention;

FIG. 3 is a schematic view of the action state of the clamping portion of the present invention;

the designations in the drawings have the following meanings:

1. a knob wrench; 2. adjusting the screw rod; 3. fixedly and transversely connecting; 4. a draw bar; 5. a connecting rod; 6. movably and horizontally connecting; 7. fixing the bolt; 8. a bolt; 9. a groove; 10. a gasket; 11. a nut; 12. a kirschner wire.

Detailed Description

The embodiments of the present invention will be described in detail below, and the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Example 1

As shown in fig. 1-2, a tension traction bow comprises a propelling part, a supporting part and a clamping part;

wherein, one end of an adjusting screw rod 2 of the propelling part is connected with a knob wrench 1, and the other end is fixed on a movable cross-link 6 by a fixed bolt 7 after being matched with the thread of the fixed cross-link 3; two ends of the movable transverse connection 6 are respectively provided with a connecting rod 5 hinged with the movable transverse connection 6; the other end of the connecting rod 5 is hinged with the traction rod 4 on the same side.

The supporting part comprises a fixed transverse connection 3 and two traction rods 4 which are hinged with the two ends of the fixed transverse connection 3; and the curved recesses of the two traction rods 4 are arranged opposite to each other.

The clamping part consists of a bolt 8 penetrating through holes at the end parts of the two traction rods, a matched nut 11 and a gasket 10, and a groove 9 is formed in the bolt 8;

after the kirschner wires are placed in the two grooves 9, the nuts 11 on the two sides are screwed to fix the kirschner wires in the grooves 9. Then the knob wrench 1 is rotated, the adjusting screw 2 moves downwards to push the movable cross-link 6 to move downwards, the movable cross-link 6 applies downward tilting force to the connecting rods 5 hinged on the two sides, the connecting rods 5 transmit the force to the traction rods 4 on the two sides, and opposite component forces in the horizontal direction cause the traction rods 4 to hold the Kirschner wires to be tensioned towards the two ends. Therefore, the curved Kirschner wire can be straightened, and the injured surface during taking the needle is reduced; can also reduce muscle tension and is beneficial to fracture reduction.

Example 2

As shown in fig. 3, after the kirschner wire is horizontally placed into the inclined groove 9 of the nut with the openings of the bolts 8 at the two ends deviated, the nut 11 is rotated to fix the kirschner wire in the groove 9, at this time, a closed space is formed by the gasket 10 and the groove 9, the cylindrical kirschner wire and the groove 9 are in surface-to-surface contact, the contact surface is obviously larger than the contact surface between the bolts and the kirschner wire in the prior art, larger friction force and locking force are generated, and the kirschner wire is not easy to loosen and bend. The kirschner wires have different diameters, the sizes of the formed closed areas are different, and the kirschner wires with the diameters not larger than the opening width of the groove 9 can be adapted to the kirschner wires with any size.

Claims

1. A tension traction bow comprises a propelling part, a supporting part and a clamping part arranged at the bottom of the supporting part; the method is characterized in that: bolts (8) are respectively arranged at the two bottom ends of the supporting part, and grooves (9) for accommodating traction kirschner wires (12) are formed in the rod bodies of the bolts (8); the clamping part also comprises a nut (11) which is matched with the bolt to fix the traction kirschner wire (12).

2. A tension traction bow according to claim 1 wherein: the groove (9) is inclined, and the opening of the inclined groove (9) is arranged to be deviated to the nut (11).

3. A tension traction bow according to claim 1 wherein: the clamping part is provided with a washer (10) which is sleeved on the bolt (8) on one side of the nut (11) deviated to the groove (9).

4. A tension traction bow according to claim 1 wherein: the groove (9) and the nut (11) are arranged on the same side of the supporting part.

5. A tension traction bow according to claim 1 wherein: two bottom end portions of the supporting portion are respectively provided with a clamping hole, the bolt (8) penetrates through the clamping holes, and the nut (11) and the head portion of the bolt (8) are respectively located on two sides of the supporting portion.

6. A tension drag bow according to any one of claims 1 to 5 wherein: the opening width of the groove (9) is 3.5mm, and the depth is 5 mm.

7. A tension drag bow according to any one of claims 1 to 5 wherein: the supporting part comprises a fixed transverse connection (3) and traction rods (4) movably arranged at two ends of the fixed transverse connection (3); the bolt (8) is arranged at the bottom end part of the traction rod (4);

the propelling part comprises an adjusting screw rod (2) and a movable cross connection part (6), the adjusting screw rod (2) penetrates through the fixed cross connection part (3) to be connected with the movable cross connection part (6), two ends of the movable cross connection part (6) are respectively provided with a connecting rod (5) hinged with the movable cross connection part (6), and the other end of the connecting rod (5) is hinged with the traction rod (4).

8. A tension traction bow according to claim 7 wherein: a knob wrench (1) is arranged at one end of the adjusting screw rod (2) far away from the movable cross connection (6); the adjusting screw rod (2) is in threaded fit with the fixed cross connection (3).

9. A tension traction bow according to claim 7 wherein: the draw bars (4) are in curved arc shapes, and the concave parts of the curved arcs of the two draw bars (4) are arranged oppositely.