CN2065886U - Testis paracentesis biopsy needle - Google Patents

Abstract

The utility model relates to a puncture biopsy needle which is exclusively used for testing testis living tissues, which is composed of a puncture needle, a biopsy needle and a trocar. The puncture biopsy needle has the advantages of safety, small pain of patients, minimum damage, easy and fast material fetching.

Description

Testis paracentesis biopsy needle

This utility model belongs to technical field of medical instruments, is a kind of instrument of diagnosing male infertility and carrying out the testis biopsy that is exclusively used in.

Testis open biopsy method is the biopsy method of using always.Present method is to cut testis with scalpel through scrotum to take out testis tissue, and layer-by-layer suture is performed the operation and need 2 people can be finished again, and required time is also longer.Because operation wound is big, postoperative patient pain is acute.And there are cicatrix, rhabdion and adhesion in the part behind the dermal sutures out.Have both at home and abroad successively over past ten years that the puncture of testis living tissue pincers is drawn materials, testis aspiration biopsy and do reports such as testis biopsy with the Tru--cut pin.But all there is big, the shortcoming such as dark of drawing materials less, punctured of wound respectively.

The purpose of this utility model be make a kind of easy and simple to handle rapidly, less, the safe and reliable testis puncture biopsy pin of wound to be to substitute the testis biopsy instrument that uses at present.

Describe its structure and using method in detail below in conjunction with accompanying drawing.

The testis puncture biopsy pin is made up of puncture needle (1), biopsy needle (2) and (4) three of the trocars.The external diameter of puncture needle (1) and biopsy needle (2) is approximate consistent with the internal diameter of the trocar (4).In the insertion trocar (4) that puncture needle (1) and biopsy needle (2) can be very identical.Shown in Figure of description: the syringe needle of the trocar (4) is an open tack, and is shaped on the groove (5) of an about 1mm * 2mm at front end.The syringe needle of biopsy needle (2) is a hemispherical of sealing, is shaped on the groove (3) of an about 1mm * 2mm on the pin wall at distance syringe needle 1mm place, and the groove (5) of its size and the trocar (4) about equally.The edge of trocar groove (5) and biopsy needle groove (3) grinds sharp.The syringe needle of puncture needle (1) is the normal injection syringe needle, and length is exposed from the open butt end of the trocar (4) and is advisable to insert the trocar (4) back syringe needle.The length of biopsy needle (2) is advisable mutually together to insert its two pins groove correspondence of the trocar (4) back.

Earlier puncture needle (1) is inserted in the trocar (4) during use,, be easy to just puncture needle (1) to be thrust testis together with the trocar (4) owing to there is the prong head of puncture needle (1) to expose from the opened front end of the trocar (4).Fixed cover bobbin (4) is motionless then, and puncture needle (1) is extracted out from the trocar (4); Again biopsy needle (2) is inserted in the trocar (4), two pin grooves are alignd.Behind biopsy needle (2), connect syringe, utilize the syringe negative pressure that testis tissue is sucked in the groove (3), rotate biopsy needle (2) 180 degree simultaneously, because the relative motion between two pins, its two pins recess edge just produces the cutting effect as shears, thereby the testis tissue that will suck in the groove (3) is cut open.At last biopsy needle (2) is extracted out the testis tissue that i.e. taking-up can be carried out biopsy from the trocar (4).As do not get testis tissue, can again biopsy needle (2) be inserted and repeat said process in the trocar (4), till taking out tissue.

Use this testis puncture biopsy pin amount of drawing materials bigger, thrust not organize and can get tissue deeply.Paracentesis depth is fixed, and tissue injury reduces to bottom line when drawing materials.In a pinprick, can repeatedly draw materials, till satisfaction.Easy and simple to handle clinically, safe and reliable, the time is short, the patient suffering is little, no cicatrix rhabdion.Use the result to prove complete alternative testis open biopsy method, also be better than other non-surgical incision biopsy methods.

(1) is the positive side view of puncture needle in the Figure of description.(2) be the positive side view of biopsy needle.(4) be respectively the groove of biopsy needle, the trocar for the positive side view of the trocar, (3), (5).(6), (7) are respectively puncture needle (1) when using, biopsy needle (2) inserts the state in the trocar (4).

Claims (4)

1, a kind of aspiration biopsy pin that is used for the testis biopsy is characterized by a whole set of biopsy needle and is made up of puncture needle [1], biopsy needle [2] and the trocar [4], and the external diameter of puncture needle [1] and biopsy needle [2] is approximate consistent with the internal diameter of the trocar [4].

2, by the described aspiration biopsy pin of claim 1, the syringe needle that it is characterized by the trocar (4) is an open tack, and is shaped on the groove (5) of an about 1mm * 2mm at front end.

3, by the described aspiration biopsy pin of claim 1.2, the syringe needle that it is characterized by biopsy needle (2) is a sealing hemispherical, be shaped on the groove (3) of an about 1mm * 2mm on the pin wall at distance syringe needle 1mm place, the length of biopsy needle (2) is advisable mutually together to insert its two pins groove correspondence of the trocar (4) back.

4, by the described aspiration biopsy pin of claim 1.2, the length that it is characterized by puncture needle (1) is exposed from the open butt end of the trocar (4) and is advisable to insert the trocar (4) back syringe needle.

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