CN-122005044-A - Kirschner wire cuts integral type instrument of bending

CN122005044ACN 122005044 ACN122005044 ACN 122005044ACN-122005044-A

Abstract

The invention relates to the technical field of medical equipment, in particular to a Kirschner wire cutting and bending integrated tool which comprises a clamp head, a first fluted disc, a fixed rod and a positioning rod, wherein the first fluted disc is arranged on the clamp head in a unidirectional rotation mode and is coaxial with the fixed rod, a first cutting edge is arranged on the first fluted disc, a second cutting edge is arranged on the clamp head, and the first cutting edge and the second cutting edge can be overlapped by rotation of the first fluted disc so as to cut off the Kirschner wire. The first fluted disc is provided with a radial groove on the circumferential surface, the positioning rod and the first fluted disc are radially arranged along the fixing rod, the bending Shi Keshi needle is arranged in the groove, is positioned between and contacted with the positioning rod and the fixing rod, and the positioning rod is positioned at the front side of the Kirschner wire around the rotation direction of the fixing rod. The first fluted disc rotates to enable the first cutting edge and the second cutting edge to shear the Kirschner wire in a staggered way, three-point support is formed by the fixing rod, the positioning rod and the first fluted disc during bending, the Kirschner wire can be bent by rotating the first fluted disc, the positioning rod counteracts bending torsion force, the damage to bones is avoided, the medical risk is reduced, single-person operation is realized, the operation stability is improved, and the labor is saved.

Inventors

JIANG PEIWANG
ZHANG MINGLI

Assignees

郑州壹毫米医药科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260312

Claims (10)

1. A Kirschner wire cutting and bending integrated tool is characterized by comprising a clamp head, a first fluted disc, a fixing rod, a positioning rod and a driving mechanism, wherein the first fluted disc is installed on the clamp head in a unidirectional rotation mode around an axis of the first fluted disc, the fixing rod is arranged on the clamp head and is coaxial with the first fluted disc, the fixing rod penetrates through the first fluted disc and is rotationally connected with the first fluted disc, a first cutting edge is arranged on the first fluted disc, a second cutting edge is arranged on the clamp head, the first cutting edge and the second cutting edge are overlapped in the circumferential direction of the first fluted disc through rotation of the first fluted disc, the positioning rod is arranged on the clamp head and is arranged with the first fluted disc in the radial direction of the fixing rod, a groove penetrating through the center of the first fluted disc in the radial direction of the first fluted disc is formed on the circumferential surface of the first fluted disc, the Kirschner wire is inserted into the groove of the first fluted disc and is located between the positioning rod and the fixing rod and is respectively contacted with the positioning rod, the positioning rod is located on the front side of the first fluted disc in the first rotation direction, and the positioning rod is used for driving the first fluted disc relatively to rotate.
2. The Kirschner wire cutting and bending integrated tool according to claim 1 is characterized in that a first cutting hole is formed in a first fluted disc, the hole wall of the first cutting hole forms the first cutting edge, a second cutting hole is formed in a clamp head, and the hole wall of the second cutting hole forms the second cutting edge.
3. The tool according to claim 1, wherein the clamp head is provided with a plurality of positioning holes, the positioning holes are arranged along the circumferential direction of the fixing rod, and the positioning rod is slidably arranged in one of the positioning holes.
4. The tool according to claim 1, wherein the driving mechanism comprises a connecting block and two handles, the connecting block is rotatably arranged on the pliers head, a gear transmission assembly is arranged between the connecting block and the first fluted disc, the connecting block rotates to drive the first fluted disc to rotate through the gear transmission assembly, one handle is connected with the pliers head, and the other handle is connected with the connecting block.
5. The tool of claim 4, wherein the gear assembly comprises a second toothed disc and a first ratchet member, the second toothed disc is rotatably disposed on the jaw and coaxial with the connecting block, the second toothed disc is engaged with the first toothed disc, and the connecting block rotates to drive the second toothed disc to rotate unidirectionally via the first ratchet member.
6. The k-wire cutoff and bending integrated tool of claim 5 wherein the diameter of the first toothed disc is greater than the diameter of the second toothed disc.
7. The k-wire cutting and bending integrated tool according to claim 1, wherein a second ratchet wheel member is arranged between the first fluted disc and the clamp head, and the first fluted disc rotates unidirectionally relative to the clamp head through the second ratchet wheel member.
8. The tool according to claim 2, wherein the clamp head comprises a supporting block and two fixing plates symmetrically arranged about the supporting block, the supporting block is located between the two fixing plates and is respectively connected with the two fixing plates, and the two fixing plates are located on two sides of the first fluted disc in the axial direction and are respectively contacted with the first fluted disc.
9. The tool according to claim 8, wherein the two fixing plates are respectively provided with a receiving groove on a surface close to each other, two ends of the first fluted disc are positioned in the corresponding receiving grooves, and the peripheral surface of the first fluted disc is respectively in sliding contact with the two fixing plates.
10. The tool of claim 2, wherein a sidewall of the first hole in which the first cutting edge is located is an inclined surface, and the inclined surface is gradually away from the kirschner wire from a position close to the first cutting edge to a position far from the first cutting edge in a direction in which the first fluted disc rotates.

Description

Kirschner wire cuts integral type instrument of bending Technical Field The invention relates to the technical field of medical instruments, in particular to a Kirschner wire cutting and bending integrated tool. Background At present, kirschner wires are widely used in bone surgery for fixation of fractures, mainly for fixation of smaller bone fragments than the main bone fragments by auxiliary bone plates or intramedullary nails, or as main fixation means when applying tension-band fixation techniques. When the k-wire is used for final fixation of a fracture or is expected to remain in the body for a long time, orthopedics often need to cut off the extra part of the end of the k-wire outside the bone and bend the end, thereby reducing or avoiding postoperative complications such as irritation of the skin to the sharp end protrusion of the k-wire, damage to surrounding tissue structures, and the like. In clinical operation, when bending a thicker Kirschner wire (the diameters are 2.0mm, 2.5mm and 3.0 mm), the operation difficulty is high and the operation is completed by two persons in a matched way, the Kirschner wire is controlled by an assistant at the junction of the wire and the bone to resist and fix by a needle holder or a locking pliers, an operator clamps the tail end of the Kirschner wire by using another needle holder or the locking pliers, the Kirschner wire is bent by using the torsion force of the wrist joint, and the redundant part of the Kirschner wire is cut by using a wire shear after bending. This operation method is very inconvenient, not only can delay the operation progress, increase the human input, and easily appear the cooperation deviation when two people operate in coordination, and then cause the secondary injury to the patient, is difficult to satisfy the high-efficient, convenient, the safe operation demand of orthopedic operation. Disclosure of Invention Accordingly, it is necessary to provide a tool for cutting and bending a kirschner wire in order to solve the problem that the cutting and bending operations of the kirschner wire are inconvenient. The above purpose is achieved by the following technical scheme: The utility model provides a kirschner wire cuts integrated tool of bending, including the binding clip, first fluted disc, the dead lever, locating lever and actuating mechanism, first fluted disc installs on the binding clip with unidirectional rotation around self axis, the dead lever sets up on the binding clip and with first fluted disc coaxial, the dead lever runs through first fluted disc and is connected with first fluted disc rotation, be equipped with first cutting edge on the first fluted disc, be equipped with the second cutting edge on the binding clip, first fluted disc rotation makes first cutting edge and second cutting edge coincide in the circumferencial direction of first fluted disc, in order to realize cutting off to kirschner wire, the locating lever sets up on the binding clip and with first fluted disc along the radial direction of dead lever, the recess that passes first fluted disc center along first fluted disc radial direction has been seted up to the global recess that forms on first fluted disc, during bending, the kirschner wire inserts in the recess of first fluted disc and is located locating lever and dead lever contact respectively, the locating lever is located kirschner wire's front side in first fluted disc rotation direction, actuating mechanism is used for driving first fluted disc relatively. Preferably, a first cutting hole is formed in the first fluted disc, the hole wall of the first cutting hole forms the first cutting edge, a second cutting hole is formed in the clamp head, and the hole wall of the second cutting hole forms the second cutting edge. Preferably, the clamp head is provided with a plurality of positioning holes, the positioning holes are arranged along the circumferential direction of the fixing rod, and the positioning rod is slidably arranged in one of the positioning holes. Preferably, the driving mechanism comprises a connecting block and two handles, the connecting block is rotationally arranged on the pliers head, a gear transmission assembly is arranged between the connecting block and the first fluted disc, the connecting block rotates to drive the first fluted disc to rotate through the gear transmission assembly, one handle is connected with the pliers head, and the other handle is connected with the connecting block. Preferably, the gear transmission assembly comprises a second fluted disc and a first ratchet wheel piece, the second fluted disc is rotatably arranged on the pliers head and is coaxial with the connecting block, the second fluted disc is meshed with the first fluted disc, and the connecting block rotates to drive the second fluted disc to rotate unidirectionally through the first ratchet wheel piece. Preferably, the diameter of the first toothed disc is greater than the diameter of the