CN201353165Y

CN201353165Y - Knee joint posterior cruciate ligament tibia locator

Info

Publication number: CN201353165Y
Application number: CNU2009200224149U
Authority: CN
Inventors: 张强; 王建华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-24
Filing date: 2009-02-24
Publication date: 2009-12-02
Anticipated expiration: 2019-02-24

Abstract

A knee joint posterior cruciate ligament tibia locator belongs to medical appliances, has convenient use and operation, and comprises a lower bracket, wherein a lower locator is fixedly connected on the lower end of the lower bracket, a depth-limiting hollow drill is inserted in the lower locator, a guide needle is inserted in the depth-limiting hollow drill, and an upper bracket is inserted on the upper end of the lower bracket, an upper locator is fixedly connected on the upper end of the upper bracket, a locating arm is inserted in the upper locator, and the locating end of the locating arm is provided with an arc wide blade, wherein the locating arm is of a hollow structure, and a guide thread groove is arranged on the locating end of the locating arm. A reinforced locator is fixedly connected on the upper end of the lower bracket, a reinforced stable arm is inserted in the reinforced locator, a hollow guiding cannula is inserted in the lower locator, and the depth-limiting hollow drill is inserted in the guiding cannula which is tightly combined with the depth-limiting hollow drill. The arc wide blade in the utility model can effectively strip posterior joint capsule, which avoids the guide needle deflecting, and protects posterior blood nerves. The design of the reinforced stable arm can effectively avoid moving the locator, and is convenient for operations.

Description

Posterior cruciate ligament of knee joint tibia localizer

Technical field

This utility model relates to a kind of medical apparatus and instruments, relates in particular to a kind of posterior cruciate ligament of knee joint tibia localizer.

Background technology

At present, the registration arm of the posterior cruciate ligament of knee joint tibia localizer that uses in the medical treatment is not only narrow but also thin, and the positioning end of its registration arm is not only sharp but also thick, protection to knee joint rear nervus vasculairs in the operation is imprecise, guide needle departs from easily, damage knee joint rear nervus vasculairs, and also being difficult for picks a bone peels off; And, in the whole operation process of operation, getting the position that relies on operator to keep localizer fully with hands, localizer is very easily mobile; Because registration arm is a solid construction, often be positioned at the joint trailing edge, be positioned at normal stop front upper place, need to increase inboard approach behind the knee joint in case of necessity, insert arthroscope and other apparatuses, need under the direct-view of the clear visual field, derive guiding steel wire by hand from the tibia trailing edge during operation, require to remove the ligament stump during application with apparatus, therefore, present posterior cruciate ligament of knee joint tibia localizer uses very inconvenient.

Summary of the invention

The purpose of this utility model provides a kind of easy to operate posterior cruciate ligament of knee joint tibia localizer that uses.

For achieving the above object, the technical solution adopted in the utility model is:

A kind of posterior cruciate ligament of knee joint tibia localizer comprises lower carriage, and the lower carriage lower end is fixedly connected with lower locating device, is plugged with the dark core drill of limit in the lower locating device, limits dark core drill outer wall to have graduation mark, limits in the dark core drill and is plugged with guide pin; The lower carriage upper end is plugged with upper bracket, and the upper bracket upper end is fixedly connected with localizer, is plugged with registration arm in the last localizer, and it is characterized in that: the positioning end of registration arm has the wide sword of arc; Registration arm is a hollow structure, and the positioning end of registration arm has the seal wire groove; Described lower carriage upper end is fixedly connected with strengthening positioning work piece, is plugged with the reinforcing stabilizing arm in the strengthening positioning work piece, and the intersection point of reinforcing stabilizing arm and described guide pin is positioned at described seal wire groove; Be plugged with the hollow guiding sleeve pipe in the described lower locating device, the dark core drill of described limit of pegging graft in the hollow guiding sleeve pipe, the hollow guiding sleeve pipe is combined closely with the dark core drill of limit, and limit deep space heart drill rear end has positive stop, and described graduation mark extends to the positive stop place.

The wide sword of arc in this utility model can effectively be peeled off the posterior joint capsule, avoids guide pin to depart from, protection knee joint rear nervus vasculairs; Reinforcing the design of stabilizing arm can effectively avoid localizer to move, and makes things convenient for operation technique; Drill through dark core drill of bone road time limit by guide pin and the guiding of hollow guiding sleeve pipe two-phase, avoided the skew that causes by the guide pin guiding merely, reduced the metal fragment of limitting dark core drill skew back and guide pin wearing and tearing to cause; The registration arm of hollow can make steel wire directly pass the joint in registration arm, does not need to remove the posterior cruciate ligament of knee joint stump, and the direct-view of the clear visual field just can be derived guiding steel wire from the tibia trailing edge with apparatus down, effectively shortens operating time, and is easy for operation.

Description of drawings

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

In the accompanying drawing:

1, lower locating device 2, lower carriage 3, strengthening positioning work piece 4, upper bracket 5, last localizer

6, registration arm 7, reinforcing stabilizing arm 8, seal wire groove 9, the wide sword 10 of arc, guide pin

11, the dark core drill 12 of limit, hollow guiding sleeve pipe 13, graduation mark 14, positive stop

The specific embodiment

Below in conjunction with the drawings and specific embodiments this utility model is further described:

A kind of posterior cruciate ligament of knee joint tibia localizer as shown in Figure 1, comprises lower carriage 2, lower carriage 2 lower ends are fixedly connected with lower locating device 1, be plugged with the dark core drill 11 of limit in the lower locating device 1, limit dark core drill 11 outer walls to have graduation mark 13, limit in the dark core drill 11 and be plugged with guide pin 10; Lower carriage 2 upper ends are plugged with upper bracket 4, and upper bracket 4 upper ends are fixedly connected with localizer 5, are plugged with registration arm 6 in the last localizer 5, and the positioning end of registration arm 6 has the wide sword 9 of arc; Registration arm 6 is a hollow structure, and the positioning end of registration arm 6 has seal wire groove 8; Described lower carriage 2 upper ends are fixedly connected with strengthening positioning work piece 3, are plugged with in the strengthening positioning work piece 3 to reinforce stabilizing arm 7, and the intersection point of reinforcing stabilizing arm 7 and described guide pin 10 is positioned at described seal wire groove 8; Be plugged with hollow guiding sleeve pipe 12 in the described lower locating device 1, the dark core drill 11 of the described limit of grafting in the hollow guiding sleeve pipe 12, hollow guiding sleeve pipe 12 is combined closely with the dark core drill 11 of limit, limits dark core drill 11 rear ends to have positive stop 14, and described graduation mark 13 extends to positive stop 14 places.

The localizer that registration arm of the present utility model is used more at present is lengthening slightly, the positioning end camber is circular arc, head end is made the wide sword of the wide arc of 10mm, registration arm, to reinforce stabilizing arm and limit the intersection point of dark core drill be the seal wire groove center of positioning end, limits dark core drill tail end to be provided with the dark block of limit, makes drill bit length consistent with the localizer radius, limitting dark core drill is hollow-core construction, the hollow guiding sleeve pipe matches with it, and during making, the hollow guiding sleeve pipe can be divided into a plurality of models that vary in size.

Advantage of the present utility model is as follows:

The wide sword of arc of the present utility model can effectively be peeled off the posterior joint capsule, protection knee joint rear nervus vasculairs, Suitably lengthen definitely reach posterior cruciate ligament of knee joint stop below, drop-center is 5mm above the tip The place can guarantee that the tibial bone road is positioned at knee-joint posterior cruciate ligament tibia footprint district.

Reinforce stabilization arm of the present utility model can effectively avoid locator to move, handled easily.

Depth stop core drill of the present utility model can be controlled and pierce the degree of depth through shin bone and can excessively deeply not injure knee Rear, joint nervus vasculairs have further guaranteed the handling safety of tibia dorsal condyle section.

Drill through dark core drill of bone road time limit by the guiding of guide pin and hollow guiding sleeve pipe two-phase, avoided merely by The skew that the guide pin guiding causes has reduced the metal fragment that the skew of depth stop core drill is rear and the guide pin wearing and tearing cause.

During operation in conjunction with supporting guide rod, steel wire bootstrap bar directly passes the joint by the curved channel that registration arm constitutes, do not need to remove the posterior cruciate ligament of knee joint stump, the direct-view of the clear visual field just can be derived guiding steel wire from the tibia trailing edge with apparatus down, can effectively shorten operating time.

Claims

1, a kind of posterior cruciate ligament of knee joint tibia localizer, comprise lower carriage (2), lower carriage (2) lower end is fixedly connected with lower locating device (1), be plugged with limit dark core drill (11) in the lower locating device (1), limit dark core drill (11) outer wall to have graduation mark (13), limit and be plugged with guide pin (10) in the dark core drill (11); Lower carriage (2) upper end is plugged with upper bracket (4), and upper bracket (4) upper end is fixedly connected with localizer (5), is plugged with registration arm (6) in the last localizer (5), and it is characterized in that: the positioning end of registration arm (6) has the wide sword of arc (9); Registration arm (6) is a hollow structure, and the positioning end of registration arm (6) has seal wire groove (8); Described lower carriage (2) upper end is fixedly connected with strengthening positioning work piece (3), is plugged with in the strengthening positioning work piece (3) to reinforce stabilizing arm (7), and the intersection point of reinforcing stabilizing arm (7) and described guide pin (10) is positioned at described seal wire groove (8); Be plugged with hollow guiding sleeve pipe (12) in the described lower locating device (1), the grafting dark core drill of described limit (11) in the hollow guiding sleeve pipe (12), hollow guiding sleeve pipe (12) is combined closely with the dark core drill of limit (11), limit dark core drill (11) rear end to have positive stop (14), described graduation mark (13) extends to positive stop (14) and locates.