CN2340380Y

CN2340380Y - Medical canula style needle for trephination

Info

Publication number: CN2340380Y
Application number: CN 98222689
Authority: CN
Inventors: 阚士峰; 王成斌; 胡屹峰; 陈红艳; 阎景秋
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-10-19
Filing date: 1998-10-19
Publication date: 1999-09-29
Anticipated expiration: 2008-10-19

Abstract

The utility model discloses a medical cannula type needle for trephination. The utility model is composed of a trephination needle and a cannula. In the utility model, a needle rod of the trephination needle is inserted into a sleeve barrel which is arranged on the cannula; a needle head is exposed; steps of a needle seat hole are arranged between the needle rod and a needle handle; the steps can be arranged into the rear part of the sleeve barrel so as to be integrated with the sleeve barrel; the outer surface of the steps is provided with edges or teeth so as to drive the cannula to rotate. When the trephination needle drills into an operative site, the cannula is driven so as to be drilled into the operative site together. After drilling is carried out so as to obtain a hole which is deep enough, the trephination needle is pulled out first so that dead retraction does not occur for the hole. Flexible materials which are used in a surgical operation carry out penetration along the sleeve barrel, and then, the sleeve barrel is pulled out. As a result, the surgical operation is finished. The utility model has the advantages of convenient operation, time saving, labor saving, shortened operation time, and reduced pain for patients.

Description

Medical bushing type boring pin

This utility model belongs to medical apparatus and instruments, and saying so more specifically punches on bone or cartilage wears the boring pin of flexible operation with material.

When needing to repair operation such as fixing after people's ligament rapture, the fracture, generally after repairing, fixation with steel wire or threading saw blade fix again with wearing after the spicule boring, because bone is flexible, after spicule boring is extracted, the very fast retraction in hole, flexible materials such as soft steel wire or thread saw blade are difficult to fit inside along the hole, and operating time is long, medical worker's labor intensity is big, and patient is very painful.

The purpose of this utility model does not make the hole retraction after providing a kind of punching, can at an easy rate flexible surgical material be penetrated the boring pin in the hole.

For achieving the above object, the technical solution of the utility model is: at boring pin overcoat one sleeve pipe, the syringe needle of boring pin is flat taper or rhizoma sparganic taper, and there is shank at the syringe needle rear portion, and the step of outer surface belt rib is arranged between needle handle and shank; Shank inserts in the preceding sleeve of sleeve pipe, pressing is allowed for access is advisable to touch with have gentle hands in cooperation therebetween, when syringe needle all exposes telescopic front end, the step of its rear portion band rib just seat is gone into bottom endoporus needle stand and that adapt with its outer surface of sleeve pipe rear portion and sleeve one, the barrel forward end periphery shrinks gradually along the direction of needle point on the syringe needle, cooperates along connecing with the inclined-plane of syringe needle back.

During use, needle handle is clamped with the drill chuck head of bitbrace in the syringe needle subtend position of need holing, after the boring of spudding in, boring pin and sleeve pipe pierce in the lump needs operative site, extracts the boring pin, and sleeve is temporarily stayed in the bone, to perform the operation penetrates in the hole along sleeve with material, extracts sleeve, and operation can be finished smoothly.

Because the boring pin pierces the position that needs operation simultaneously by the sleeve on the step drive sleeve pipe of band rib, after boring thoroughly, the needle body of pin of will holing earlier extracts and sleeve is stayed in the bone, drilled Kong Buhui Hui Duan, it is quite easy that operation directly penetrates in the telescopic hole with flexible material, and then extract sleeve, and can shorten operating time like this, alleviate medical worker's labor intensity and patient's misery.

The utility model is described in further detail below in conjunction with drawings and Examples.

Fig. 1 is the cutaway view of medical bushing type boring pin;

Fig. 2 is the view of flat tapered needle among Fig. 1;

Fig. 3 is the view of rhizoma sparganic tapered needle among Fig. 1;

Fig. 4 is the A-A cutaway view of a kind of type of attachment of boring pin kind sleeve pipe among Fig. 1;

Fig. 5 is the A-A cutaway view of the another kind of type of attachment of boring pin and sleeve pipe among Fig. 1.

Among Fig. 1, the syringe needle 1.1 of boring pin 1 is for helping piercing the flat taper (referring to Fig. 2) of bone, be preferably rhizoma sparganic taper (referring to Fig. 3), its rear portion is connected with shank 1.2, shank 1.2 is for being suitable for the elongated round bar of drilling depth, the rear end of shank 1.2 is useful on the needle handle 1.4 of clamping on drill chuck head, between needle handle 1.4 and shank 1.2, step 1.3 than the above two all thick band ribs is arranged, its rib number can be two relative flats (referring to Fig. 4), can be hexagon (referring to Fig. 5), or other multiple multiple edge bodies or circumferential multiple tooth shape along the pin length direction etc. be protection domain of the present utility model; Shank 1.2 inserts in sleeve pipe 2 forward sleeves 2.1 holes, it cooperates to push with have gentle hands, shank 1.2 is allowed for access and is advisable in it, when syringe needle 1.1 all exposes sleeve 2.1 front ends, step 1.3 just seat is gone into sleeve 2.1 rear portions, is with it bottom endoporus needle stand 2.2 and that adapt with stepped outer surface of one, the thickness of sleeve 2.1 front end cylindricals is dwindled gradually for the direction along syringe needle 1.1 points, in its junction, cooperate along connecing with syringe needle 1.1 rear ramped surface, need operative site so that syringe needle 1.1 and sleeve 2.1 are pierced in the lump smoothly.

Claims

1, a kind of medical bushing type boring pin, the syringe needle (1.1) and the connected shank (1.2) that comprise the anterior band point of boring pin (1), it is characterized in that: the syringe needle (1.1) of boring pin (1) is flat taper or rhizoma sparganic taper, and the step (1.3) of outer surface belt rib is arranged between needle handle (1.4) and shank (1.2); Shank (1.2) inserts in the forward sleeve of sleeve pipe (2) (2.1), pressing is allowed for access is advisable to touch with have gentle hands in cooperation therebetween, when syringe needle (1.1) all exposes the front end of sleeve (2.1), the step (1.3) of its rear portion band rib just seat is gone into sleeve pipe (2) upper bush (2.1) rear portion and is with it bottom endoporus needle stand (2.2) and that adapt with step (1.3) outer surface of one, sleeve (2.1) front end cylindrical shrinks gradually along the direction of syringe needle (1.1) point, cooperates along connecing with the inclined-plane of syringe needle (1.1) back.