CN215018746U

CN215018746U - Kirschner wire for orthopedic operation

Info

Publication number: CN215018746U
Application number: CN202120567103.1U
Authority: CN
Inventors: 郭晓峰
Original assignee: Wuxi No 9 Peoples Hospital
Current assignee: Wuxi No 9 Peoples Hospital
Priority date: 2021-03-19
Filing date: 2021-03-19
Publication date: 2021-12-07
Anticipated expiration: 2031-03-19

Abstract

The utility model relates to the technical field of medical equipment, in particular to a Kirschner wire for orthopedic surgery, which comprises a needle bar and needle heads, wherein two ends of the needle bar are symmetrically provided with limit needle heads convenient for wrapping bone cement, each limit needle head mainly comprises a limit ball head and a limit pipe, the limit ball head and the limit pipe are both sheathed on the needle bar, the limit ball head is arranged on the outer side surface of the limit pipe, the length of the limit needle head is one third of the length of the needle bar, the limit ball head comprises limit snap rings arranged at equal intervals, the diameters of the limit snap rings are gradually decreased from the middle part to the two ends, the limit pipe comprises limit snap rings arranged at equal intervals, the diameters of the limit snap rings are the same, the limit snap rings arranged at equal intervals at the two ends of the Kirschner wire enhance the stability of bone cement package, so that when the Kirschner wire is taken out, the bone cement can be completely taken out, and the residue of foreign matters is avoided, so that the infection rate of the second-stage operation is reduced.

Description

Kirschner wire for orthopedic operation

Technical Field

The utility model belongs to the technical field of the medical instrument technique and specifically relates to an orthopedic surgery uses ke shi needle.

Background

The Kirschner wire is a commonly-used internal fixation material for orthopedics, the original specification of the Kirschner wire is generally fixed at about twenty centimeters, the diameter of the Kirschner wire has different specifications between 0.5-2 millimeters, the Kirschner wire is used for fixing short and small fractures or avulsion fractures and other fractures with low stress, and is also used for fixing temporary fracture blocks in the orthopedic operation, because of wide application, the maximum diameter of the Kirschner wire is gradually increased to 4 millimeters, and along with the development of an external fixation support, the Kirschner wire is matched with an external fixation lock pin to fix pelvis fractures, calcaneus fractures and other emergent and large fractures. For the operation treatment of osteomyelitis, on the basis of thoroughly eliminating necrosis infected bones, antibiotic bone cement is adopted for filling a bone infected area so as to improve the sterilization efficiency on an infected part, and meanwhile, in order to improve the stability of fracture broken ends, rigid filling of a Kirschner wire embedded with bone cement is mostly adopted, but a large number of operations expose the problem that the bone cement is difficult to completely take out, so that the requirement for completely taking out the bone cement is urgently needed, and the residual Kirschner wire is avoided.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect that the existing bone cement is difficult to be completely taken out, the utility model provides a Kirschner wire for orthopedic surgery, which solves the problem through the locating parts arranged at the two ends of the needle rod.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a kirschner wire for orthopedic surgery, includes needle bar and syringe needle, and the symmetry is provided with the spacing syringe needle of the bone cement of being convenient for to wrap up in needle bar both ends, and spacing syringe needle mainly comprises spacing bulb and spacing pipe, and spacing bulb and spacing pipe all suit are on the needle bar, and spacing bulb sets up the lateral surface at spacing pipe.

Furthermore, the length of the limiting needle head is one third of the length of the needle rod.

Furthermore, the limiting ball head is composed of a first limiting clamping ring arranged at equal intervals, and the diameter of the first limiting clamping ring is gradually reduced from the middle to two ends.

Furthermore, the interval between adjacent first limiting clamping rings is 0.15-0.3 mm.

Furthermore, the limiting pipe is composed of two limiting clamping rings arranged at equal intervals, and the diameters of the two limiting clamping rings are the same.

Furthermore, the interval between two adjacent limiting snap rings is 0.15-0.3 mm.

Further, the needle bar comprises two sections of rod bodies and a connecting block in the middle, and the two sections of rod bodies are connected through the connecting block in the middle in threaded connection.

Furthermore, the center of the limiting ball head is provided with a pulling hole, and the pulling hole is communicated with a wire groove arranged outside the limiting ball head.

The beneficial effects of the utility model are that, through the spacing snap ring that the equidistant setting in ke shi needle both ends, the stability of reinforcing bone cement parcel for when taking out ke shi needle, can completely take out bone cement, avoid remaining of foreign matter, thereby reduce the infection rate of second phase operation.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

fig. 3 is a left side view of the present invention;

fig. 4 is a right side view of the present invention;

in the figure, 1 is a needle rod, 11 is a rod body, 12 is a connecting block, 2 is a limiting ball head, 3 is a limiting pipe, 4 is a limiting snap ring I, 5 is a limiting snap ring II, 6 is a drawing hole, and 7 is a wire groove.

Detailed Description

As shown in figures 1 and 2, a Kirschner wire for orthopedic surgery comprises a needle rod 1 and needle heads, wherein the two ends of the needle rod 1 are symmetrically provided with limiting needle heads convenient for wrapping bone cement, the limiting needle heads mainly comprise limiting bulbs 2 and limiting pipes 3, the limiting bulbs 2 and the limiting pipes 3 are sleeved on the needle rod 1, and the limiting bulbs 2 are arranged on the outer side surfaces of the limiting pipes 3.

Through setting up the spacing syringe needle at 1 both ends of traditional needle bar, carry on spacingly at the outside bone cement of needle bar 1 to the parcel, spacing snap ring that the equidistant set up enables bone cement and firmly covers in the ke shi needle outside, can not only carry out fine disinfection of disinfecting to the bone infection district, can also improve the stability of fracture end, extract hole 6 and wire casing 7 through the spacing bulb 2 tip of steel wire cable cooperation at last, the ke shi needle that will wrap up has bone cement takes out completely, effectively avoid remaining of foreign matter, thereby reduce the infection rate of second phase operation.

The length of the limiting needle is one third of the length of the needle rod 1. So that the bone cement is completely limited and coated on the Kirschner wire, and is stable and firm.

The limiting ball head 2 is composed of a first limiting clamping ring 4 arranged at equal intervals, and the diameter of the first limiting clamping ring 4 decreases progressively from the middle to the two ends. The interval between the adjacent first limiting snap rings 4 is 0.15-0.3 mm. The limiting pipe 3 is composed of two limiting clamping rings 5 which are arranged at equal intervals, and the diameters of the two limiting clamping rings 5 are the same. The interval between two adjacent limiting snap rings 5 is 0.15-0.3 mm.

Spacing snap ring 4 and spacing snap ring two 5 through equidistant setting for bone cement is stabilized the card and is established in the recess between the snap ring, can not only improve bone cement's parcel nature, can also strengthen the joint strength with the bone piece, avoids the slippage to shift.

The needle bar 1 comprises two rod bodies 11 and a connecting block 12 in the middle, and the two rod bodies 11 are connected through the connecting block 12 in the middle of which the two rod bodies are in threaded connection. The connecting block 12 is detachably connected in a threaded manner, and is convenient and fast to install and detach.

As shown in fig. 3 and 4, the center of the limiting ball head 2 is provided with a pulling hole 6, and the pulling hole 6 is communicated with a wire groove 7 arranged outside the limiting ball head 2. The pulling-out hole 6 is in a through hole form, so that a steel wire cable can pass through and be clamped in the wire groove 7, and the Kirschner wire can be pulled out completely through the steel wire cable.

The foregoing description is intended to be illustrative rather than limiting, and it will be appreciated by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. The utility model provides an orthopedic surgery uses ke shi needle, includes needle bar (1) and syringe needle, characterized by, needle bar (1) both ends symmetry is provided with the spacing syringe needle of the parcel bone cement of being convenient for, and spacing syringe needle mainly comprises spacing bulb (2) and spacing pipe (3), and spacing bulb (2) and spacing pipe (3) all suit are on needle bar (1), and spacing bulb (2) set up the lateral surface at spacing pipe (3).

2. An orthopedic k-wire according to claim 1, characterized in that the length of the limiting needle is one third of the length of the shank (1).

3. The Kirschner wire for orthopedic surgery as claimed in claim 1, wherein the limiting ball head (2) is composed of limiting snap rings (4) arranged at equal intervals, and the diameters of the limiting snap rings (4) are gradually decreased from the middle part to the two ends.

4. The Kirschner wire for orthopedic surgery as claimed in claim 3, wherein the interval between adjacent first limit snap rings (4) is 0.15-0.3 mm.

5. The Kirschner wire for orthopedic surgery according to claim 1, wherein the limiting tube (3) is composed of two limiting snap rings (5) which are arranged at equal intervals, and the diameters of the two limiting snap rings (5) are the same.

6. The Kirschner wire for orthopedic surgery as claimed in claim 5, wherein the interval between two adjacent limiting snap rings (5) is 0.15-0.3 mm.

7. The Kirschner wire for orthopedic surgery according to claim 1, wherein the needle rod (1) comprises two rod bodies (11) and a middle connecting block (12), and the two rod bodies (11) are connected through the connecting block (12) screwed in the middle of the two rod bodies.

8. The Kirschner wire for orthopedic surgery as claimed in claim 1, wherein an extraction hole (6) is formed in the center of the limiting ball head (2), and the extraction hole (6) is communicated with a wire groove (7) formed outside the limiting ball head (2).