CN201847756U - Forward line-passing device for reconstructing cruciate ligament of knee joint under arthroscope - Google Patents

Abstract

The utility model relates to a forward line-passing device for reconstructing cruciate ligaments of a knee joint under an arthroscope, which belongs to the technical flied of bone surgery apparatuses and aims to provide a line-passing device which has a simple structure, is convenient in surgery operation and can not be broken. The utility model adopts the technical scheme that: the forward line-passing device comprises a line-passing conduit and a traction steel wire, wherein the front end of the traction steel wire is an elastic bent arc, the rear end of the traction steel wire is connected with a small steel wire ring, and a lead is tied on the small steel wire ring. Since the forward line-passing device in the structure for reconstructing the cruciate ligaments of the knee joint is adopted, the original elastic bent arc is kept at the front end of the traction steel wire, and the small steel wire ring is changed be connected with the rear end of the traction steel wire, thus, after the front end of the traction steel wire pops up, the front end of the traction steel wire can be clamped by a clamp and pulled out without being broken, and the small steel wire ring is positioned at the rear end of the traction steel wire, can be used for leading out the lead after the traction steel wire is pulled out and can not be damaged. The forward line-passing device has the advantages of simple structure, convenience in surgery operation and easiness in manufacture and has popularization and use values.

Description

Arthroscope is rebuild the forward wire-threading device that cruciate ligaments of knee joint uses down

Technical field

This utility model relates to a kind of wire-threading device that uses in rebuilding the cruciate ligaments of knee joint operation, belong to the bone surgery set technical field.

Background technology

At present, under arthroscope, rebuild in the operation of cruciate ligaments of knee joint, its operation method is to hole on tibia, the tunnel that connects before and after forming, again tendon is put into the tunnel, the edge that contacts with tibial tunnel at tendon screws in interference screw, and it is fixing to implement extruding, tendon passes from the tibia rear portion, carries out reproducing of ligamentaum cruciatum.When implementing this operation, need to penetrate lead by tibial tunnel earlier, pass from the tunnel with lead traction tendon then.Traditional method that penetrates lead is to use wire-threading device, and wire-threading device is formed by crossing wire conduit and traction steel wire, and the front end of traction steel wire is resilient crooked arc, and a little wire loop is arranged on the top, and lead is fastened on little wire loop.During operation, traction steel wire is communicated with lead put into wire conduit, after crossing wire conduit and passing tibial tunnel, the forward crooked segmental arc of traction steel wire ejects, the anterior segmental arc of clamping traction steel wire with clamp at the opposite side of tibia is pulled out draught line from segmental arc then, like this with the other end of lead through tibial tunnel.In clinical practice, find, when pulling out the anterior segmental arc of traction steel wire, little wire loop is foremost, and clamp often can only be clamped little wire loop foremost, and because the diameter of little wire loop is very little, also thinner than traction steel wire, when clamp was clamped little wire loop and is pulled outwardly, little wire loop was easy to fracture, operation has to interrupt, to penetrate wire conduit and traction steel wire again, postpone the carrying out of operation greatly, also increase expense to the patient.In this case, except the intensity that strengthens little wire loop, improving this wire-threading device also is the measure that can take.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of simple in structure, operation technique arthroscope convenient, that can not fracture and rebuilds the forward wire-threading device that cruciate ligaments of knee joint uses down.

The technical scheme that solves the problems of the technologies described above is:

A kind of arthroscope is rebuild the forward wire-threading device that cruciate ligaments of knee joint uses down, it is formed by crossing wire conduit and traction steel wire, and the front end of traction steel wire is resilient crooked arc, and its improvements are, the rear end of traction steel wire is connected with little wire loop, and bolt has lead on the little wire loop.

Above-mentioned arthroscope is rebuild the forward wire-threading device that cruciate ligaments of knee joint uses down, and the described length of crossing wire conduit is 180-200mm, and diameter is 1.8-2.0mm, and the long 240-260mm of traction steel wire, the circle diameter of little wire loop are 1.5-1.8mm.

Adopt the arthroscope of this structure to rebuild the forward wire-threading device that cruciate ligaments of knee joint uses down, the front end of traction steel wire has kept original elastic bending arc, little wire loop changes in the rear end of traction steel wire and connecting, like this after the traction steel wire front end ejects, clamp clamp can traction steel wire front end pull out, can not cause to fracture that little wire loop is in the rear end of traction steel wire, can after traction steel wire is pulled out, draw lead, can not damage.The utlity model has simple in structure, operation technique convenient, make and be easy to advantage, the value of promoting the use of is arranged.

Description of drawings

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

Fig. 2 is user mode figure of the present utility model.

Number in the figure is as follows: cross wire conduit 1, traction steel wire 2, little wire loop 3, lead 4, tibial tunnel 5.

The specific embodiment

Show among the figure, this utility model by: cross wire conduit 1, traction steel wire 2, little wire loop 3, lead 4 and form.

Compare with the wire-threading device of prior art, the front end of traction steel wire 2 of the present utility model has kept original elastic bending arc, but little wire loop 3 changes in the connection of the rear end of traction steel wire 2.The length of crossing wire conduit 1 is 180-200mm, and diameter is 1.8-2.0mm, traction steel wire 2 long 240-260mm, and the circle diameter of little wire loop 3 is 1.5-1.8mm.

The length of crossing wire conduit 1 of an embodiment of the present utility model is 200mm, and diameter is 2.0mm, traction steel wire 2 long 250mm, and the circle diameter of little wire loop 3 is 1.5mm.

This utility model in use, penetrate the other end that arrives tibial tunnel 5 from tibial tunnel 5 with crossing wire conduit 1, after crossing wire conduit 1 and passing, the extrapolated traction steel wire 2 of operator, the front end of traction steel wire 2 ejected after stretching out wire conduit, the operator outwards pulls out with the front end that clamp is clamped traction steel wire 2, until the little wire loop 3 of traction steel wire 2 rear ends lead 4 is drawn.

Claims (2)

1. an arthroscope is rebuild the forward wire-threading device that cruciate ligaments of knee joint uses down, it is formed by crossing wire conduit [1] and traction steel wire [2], the front end of traction steel wire [2] is resilient crooked arc, it is characterized in that: the rear end of traction steel wire [2] is connected with little wire loop [3], and little wire loop [3] is gone up bolt lead [4].

2. arthroscope according to claim 1 is rebuild the forward wire-threading device that cruciate ligaments of knee joint uses down, it is characterized in that: the described length of crossing wire conduit [1] is 180-200mm, diameter is 1.8-2.0mm, the long 240-260mm of traction steel wire [2], the circle diameter of little wire loop [3] is 1.5-1.8mm.

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