CN2142325Y

CN2142325Y - Multi-purpose negative pressure rotation cutting biopsy

Info

Publication number: CN2142325Y
Application number: CN 92226223
Authority: CN
Inventors: 梁季鸿
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-28
Filing date: 1992-06-28
Publication date: 1993-09-22
Anticipated expiration: 2002-06-28

Abstract

The utility model relates to a multi-purpose negative pressure rotation cutting biopsy needle, belonging to a medical appliance, which is used for the biopsy of tissues such as testis, muscle, superficial tumour, lymph node, thyroid, etc. The utility model is formed by that the outer sleeve needle 9 and the biopsy needle core 10 of a movable depth limited device which can be amounted or dismounted are arranged on a needle pipe. The needle head of the outer sleeve needle 9 is characterized in the structure of a solid cuspidal edge. The two needles are matched together and penetrate the tissues, making use that a syringe adds negative-pressure on the biopsy needle core 10; then biopsy needle core 10 is rotated, the rotary cutting of the tissues makes use of the knife-edges of the gaps of the needle heads of the two needle. The needle has the advantages of broad application, high safety, less damage, convenient and rapid operation, and the success ratio of fetching material reaches 100%.

Description

Multi-purpose negative pressure rotation cutting biopsy

This utility model belongs to a kind of medical apparatus and instruments, can be used for the biopsy of testis, muscle, fatty tissue, tumor, lymph node, thyroid etc.

What at present, the biopsy needle that is used for above-described biopsy clinically was the most advanced is Liang Shi testis biopsy pin.This biopsy needle belongs to the trocar, it is to utilize negative pressure from the side opening of biopsy nook closing member tissue to be sucked the biopsy needle in-core, then by rotation biopsy nook closing member, the knife-edge that utilizes outer casing needle and biopsy nook closing member two pin syringe needle short slots to lack the hole is sheared the tissue that sucks and is carried out biopsy.This pin is provided with the dark device of limit, and the degree of depth that penetrates tissue is fixed, and the success rate of drawing materials is up to 100%.But Liang Shi testis biopsy pin is made of three pins, and being used to clog the solid needle that the outer casing needle syringe needle lacks the hole needs to transfer to after penetrating tissue, changes the biopsy nook closing member then and just can carry out biopsy, and process still has loaded down with trivial details suspicion.In addition, changing nook closing member increases the chance that causes infection.It is fixed that depth of needle on the Liang Shi testis biopsy pin outer casing needle is regulated bolt, increases active length (depth of needle surpasses 25mm, when for example making muscle biopsy) as needs, then needs to change the biopsy needle that another does not establish depth stop.Therefore, a Zhi Liangshi testis biopsy pin can not satisfy the needs of different depth aspiration biopsy.

The purpose of this utility model provides a kind of nook closing member that do not need to change, and one penetrates the biopsy needle that tissue can cut biopsy.This utility model also is provided with removably depth of needle adjusting device, can carry out some biopsies that need limit the tissue of penetration depth (as doing the testis tissue biopsy), also can carry out some biopsies than deep tissue.Become a kind of success rate of drawing materials and reach 100%, damage for a short time, can satisfy the new multi-purpose biopsy needle of various soft tissue biopsy needs, can substitute traditional incision and other biopsy needle puncture method biopsies fully.

This utility model is to be made of outer casing needle 9 and biopsy nook closing member 10 two parts.Outer casing needle 9 afterbody needle tubings are provided with removably depth of needle adjusting bolt 1, force jack panel 2, depth adjustment nut 3.

Below in conjunction with accompanying drawing description is made in enforcement of the present utility model.

Fig. 1 is this utility model outer casing needle 9 and adnexa depth adjustment bolt 1 thereof, forces the front elevation separately of jack panel 2, depth adjustment nut 3 and biopsy nook closing member 10, and the local amplification front view of the syringe needle separately of outer casing needle 9 and biopsy nook closing member 10.

Fig. 2 is biopsy state front elevation and outer casing needle 9 and biopsy nook closing member 10 when the cooperating two pin syringe needle mated condition part amplification front view of this utility model when loading onto the dark device of limit and carrying out work.

Fig. 3 is this utility model outer casing needle 9 and biopsy nook closing member 10 mated condition front elevations and syringe needle part amplification front view when unloading the dark device of lower limit and carrying out than the deep tissue biopsy.

According to shown in Figure 1, make outer casing needle 9, biopsy nook closing member 10, depth adjustment bolt 1, force jack panel 2, depth adjustment nut 3 with materials such as rustless steels.Outer casing needle 9 needle tubing external diameters are 2mm, and length is 87mm, and its needle tubing head is solid construction and wears into cusped edge 5, has a long 7mm under the solid cusped edge syringe needle, wide 1.4mm's and backshank " 20 " printed words be in unidirectional knife-edge and lack the hole.It is shown in Figure 3 that the needle tubing end is fixed with the sleeve 8(of a long 5mm external-open screw thread), be used for depth adjustment bolt 1 in open screw thread loading and unloading combination.Depth adjustment bolt 1 external-open screw thread is used to force

jack panel

2,3 combinations of depth adjustment nut, regulates depth of needle.The external diameter of biopsy nook closing member 10 is 1.6mm, and length is 96mm, and its syringe needle is a garden shape cecum 7, and 1mm and the same direction of backshank sign " 16 " place have a long 6mm under the syringe needle cecum, and wide 1.2mm and outer casing needle 9 lack the scarce hole 6 of holes 4 corresponding knife-edge rectangles.

This utility model is to use like this.

First kind of situation (shown in Figure 2), biopsy is more shallow and will limit depth of needle and prevent to accidentally injure as do testis biopsy etc.At first depth adjustment bolt 1 is combined on the screw shell 8 of outer casing needle 9 (shown in Figure 3), then forcing jack panel 2 and depth adjustment nut 3 to be combined on the external screw thread of depth adjustment bolt 1.Regulate depth of needle according to different needs, biopsy nook closing member 10 inserted in outer casing needles 9 internal diameters, promptly form the puncture state, penetrate tissue after, aim at two pin backshank signs " 20 " and " 16 " printed words.At this moment, the scarce hole 4 of two pin syringe needles is corresponding with 6, add negative pressure with 10 milliliters of syringes at biopsy nook closing member 10, biopsy suck is lacked in the hole 4, and rotation biopsy needle core 10 under the negative pressure utilizes two tissues that suck at the knife-edge cutting of the scarce hole 4 of answering and 6, take out biopsy nook closing member 10 and observe the situation of drawing materials, same point of puncture can repeat to draw materials, and up to satisfied back biopsy nook closing member 10 is turned back in the outer casing needle 9, transfers to whole biopsy needle with the puncture state.

Second kind of situation (shown in Figure 3) will when needing to increase depth of needle, can be unloaded lower limit to install deeply to carrying out biopsy such as muscular tissue etc. than deep tissue, and its biopsy procedure is with first kind of situation, and this moment, the maximum effectively biopsy degree of depth reached 70mm.

Clinical use proves, when making biopsies such as testis, muscle, fatty tissue, superficial tumor, lymph node, thyroid with this biopsy needle, syringe needle is sharp, and the puncture needle mouth is ascending strutting but not the cut-out situation, reduced tissue injury particularly veins beneath the skin damage cause hemorrhage phenomenon.This utility model penetrates the tissue back can carry out negative pressure rotary-cut biopsy, has removed the step of the replacing nook closing member of Liang Shi testis biopsy pin from, and process is more simplified, and has reduced the chance that infects at once.This utility model is the same with Liang Shi testis biopsy pin, a puncture orifice can repeat repeatedly to draw materials, the failure of having stopped to draw materials needs the situation of puncture once more, draw materials and to satisfy various detection needs, guaranteed that the biopsy success rate reaches 100%, this is the present not available special advantage of other various biopsy needles.The dark device of limit of the present utility model is demountable, can satisfy the various degree of depth and organize aspiration biopsy, loads onto limit and behind the device penetration depth is fixed deeply, has prevented accidental injury effectively, compares with Liang Shi testis biopsy pin, and this pin has been accomplished a pin multipurpose.

Claims

1, a kind ofly be provided with the outer casing needle that fixed external thread sleeve is installed the spiral depth stop by needle tubing, solid needle, the multipurpose negative pressure rotary-cut biopsy needle that biopsy nook closing member three parts are formed is characterized in that:

(1) multipurpose negative pressure rotary-cut biopsy is made up of outer casing needle 9 and 10 liang of pins of biopsy nook closing member;

(2) on multipurpose negative pressure rotary-cut biopsy needle outer casing needle 9 needle tubings, be provided with detachable active depth adjustment bolt 1, force jack panel 2, depth adjustment nut 3, can mount and dismount simultaneously as required.

2, multipurpose negative pressure rotary-cut biopsy needle according to claim 1 is characterized in that the syringe needle of outer casing needle 9 is solid cusped edge structures, and has the scarce hole 4 of a rectangle knife-edge at its cusped edge syringe needle.