CN201119909Y

CN201119909Y - Fracture of patella internal fixation needle with holes and capable of being broken

Info

Publication number: CN201119909Y
Application number: CNU2007200429987U
Authority: CN
Inventors: 李家立
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-22
Filing date: 2007-08-22
Publication date: 2008-09-24
Anticipated expiration: 2017-08-22

Abstract

The utility model relates to a breakable patellar fracture internal stationary needle with a hole, which is characterized in that the stationary needle is a cylindrical metal bar, one end of the bar is pointed to form a needle point, two concave grooves are arranged on a bar body, and needle holes are arranged between the two concave grooves and the portions which are closed to the concave grooves. When the utility model is used, a needle tail need not bending, the front bar and the tail bar are broken after the stationary needle passes through a patellar, a fixing bar is left in the patellar, a steel wire passes through a needle hole to fix, which is simple and easy to operate, and the steel wire can not slip, and knee joint function can early move to exercise. The postoperative knee joint moving needle tail has no collision stimulation to soft tissue, which lightens pains, reduces the probability of arthrocleisis, has wide indication errors, and is basically suitable for various patellar fractures which comprise osteoporosis patients and burst fracture. The stationary needle is simple to operate, which is easy to be taken out after healing, and meanwhile, the cost is cheap, which can be accepted by patients.

Description

Broken formula Patella fracture Internal fixation pin with holes

Technical field:

This utility model relates to a kind of medical apparatus and instruments, the fixture that particularly a kind of fracture patient uses.

Background technology:

Patella is the sesamoid bone of whole body maximum, is the important component part that knee joint is bent, stretched, and Patella fracture is one of modal fracture of human body.Generally need operative treatment behind the Patella fracture, the operation fixing means is a lot of at present, wherein approved extensively that by the clinician the most frequently used method is an improvement steel wire Kirschner wire tension band method, this method is from going up the parallel sclerite that passes down with two pieces of Kirschner wires, syringe needle, the backshank of patella exposed in bending then, and other gets steel wire around Kirschner wire initial and end end fixing patella of 8 words or 0 font before patella.This method is fixed, and postoperative is not done external fixation and allowed early stage knee joint movable function to take exercise.But Kirschner wire exists the initial and end end and deals with the defective that the easy slippage of steel wire makes solid failure improperly, the afterbody of Kirschner wire bending is easy in addition and patellar ligament, quadriceps femoris tendon bump against, patient's pain, limited the knee joint activity to a certain extent, made clinically that the postoperative knee joint is tetanic often a generation.

Summary of the invention:

The with holes broken formula Patella fracture Internal fixation pin that the purpose of this utility model is that a kind of head and the tail two ends of design are easily fixing, steel wire can slippage.

The realization the technical solution of the utility model is that a kind of broken formula Patella fracture Internal fixation pin with holes is characterized in that, described locking pin is the cylinder metal bar, this rod one end sharply forms needle point, and barred body is provided with two annular grooves, respectively is provided with pin hole between two grooves, near groove.

The utility model has the advantages that:

1, this utility model is provided with pin hole, and backshank does not need bending during use, and the steel wire hole of threading a needle is fixed, simple to operation and steel wire can slippage, and simultaneously, the diameter of pin can be selected thicker, fixation is reliable, does not need external fixation, but the early ambulant knee joint function exercising.

2, the pin end can flat fully sclerotin even is embedded in the bone, and postoperative knee joint activity backshank stimulates the soft tissue collisionless, eases the pain, and is easy to accept, and can reduce the probability of ankylosis.

3, indication is wide, can be used for all kinds patella folding basically, comprises senile osteoporosis patient and comminuted fracture (pulverize and significantly can cooperate one steel wire circular ligate).

4, behaviour to do internal fixation simple, take out easily the healing back, only need cut off steel wire, a stomidium is extracted steel wire out, other end tractive steel wire can be extracted needle body out.

5, cheap, the patient easily accepts.

Description of drawings:

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is a user mode sketch map of the present utility model.

Number in the figure: 1 needle point, 2 preceding bars, 3 fixed bars, 4 grooves, 5 pin holes, 6 foot pieces, 7 patellas.

The specific embodiment:

Referring to Fig. 1, described metal bar is cylindrical barred body, diameter 1.6-2.2mm, and described pin hole 5 is provided with in pairs, and pin hole 5 is an ellipse hole, and the short diameter of slotted eye is 0.5-1.2mm; Two grooves 4 are divided into three sections with barred body on the barred body, and the distance before being respectively between bar 2, fixed

bar

3 and 6, two grooves 4 of foot piece is 36-48mm; The barred body material is rustless steel or titanium alloy; Described needle point 1 is the rhizoma sparganic taper, and needle point 1 is the circular arc transition with preceding bar 2 junctions.Referring to Fig. 2, this utility model generally needs two to use simultaneously during use, after two locking pins pass patella 7, its preceding bar 2 and foot piece 6 are fractureed, its fixed bar 3 is stayed in the patella 7, and the pin hole 5 of fixed bar 3 two ends is worn steel wire usefulness, and it is fixing with the patella 7 of fracture that steel wire is passed pin hole 5 by method for normalizing.

Claims

1, a kind of broken formula Patella fracture Internal fixation pin with holes, it is characterized in that described locking pin is the cylinder metal bar, this rod one end sharply forms needle point (1), barred body is provided with two grooves (4), locates respectively to be provided with pin hole (5) between two grooves (4), near groove (4).

2, by the described broken formula Patella fracture Internal fixation pin with holes of claim 1, it is characterized in that, described metal bar is cylindrical barred body, distance between two grooves (4) on the described barred body is 36-48mm, described needle point (1) is triangular prism shaped, described pin hole (5) is an ellipse hole, and the short diameter of slotted eye is 0.5-1.2mm.