CN2199989Y

CN2199989Y - Cell tissue aspiration apparatus

Info

Publication number: CN2199989Y
Application number: CN 94221219
Authority: CN
Inventors: 杜林�; 杜永义
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-07
Filing date: 1994-09-07
Publication date: 1995-06-07
Anticipated expiration: 2004-09-07

Abstract

The utility model provides an improved cell tissue aspiration apparatus, which comprises a needle head, needle tip hole of which has edge, a cell tissue screen, a sleeve barrel and a plunger. The utility model is characterized in that a handle of the plunger is a king-size type; the length of a piston body is 3 cm-6 cm longer than that of the barrel body of the sleeve barrel; the front part in the inner part of a connecting needle nipple of the sleeve barrel is provided with a step 5 in which the cell tissue screen is arranged. The utility model has the advantages of simple structure, compactness, portability, low cost, easy one-hand operation, reasonable stress of negative-pressure suction, fast and exact material taking, convenient collection of the sucked object, safer and more reliable use.

Description

Cell tissue aspiration apparatus

The utility model belongs to the apparatus of taking a sample to check with cell and small org in the pathological examination.

Early diagnosis is the link of most critical of treatment cancer, and Chang Yong inspection method of drawing material is drawn the simplest and the most direct, quick, safety, died and accepted by patient and cytologist widely with fine needle now.But since pin suction cytolgical examination is carried out, the medical personnel does not also have serviceable tools so far, particularly cytoscopy in recent years extensively carries out and develop rapidly, the requirement of pin being inhaled sick inspection is more and more higher, list is drawn the more and more requirement of incompatibility pathocytology inspection with syringe, the deficiency that exists is, utilize the hook on the syringe needle, groove and thorn are taken cell and small tissue out of, existence is big to the needle track normal tissue injury, the danger of malignant tumour in needle track implantation and diffusion is arranged, and the instrument of in addition taking out negative pressure is an ordinary syringe, during use, need bimanualness to draw, often check and fail because of fixing enclosed mass causes.Chinese patent CN2088847 discloses cell tissue extractor of the present invention, it is characterized by pin hole hole pump portion and be all sharp sword, piston on two symmetrical microtias are arranged, sleeve is equipped with the suction tube cover outward, and suction tube puts and is with the handle cover, and the handle cover contacts with piston by annular clamp, move with the pulling piston, it has solved the difficult problem in the biopsy sampling, can one-handed performance, easy, quick, not damaged, taking-up cell tissue that accuracy is high, and the deficiency of existence is: volume is big and heavy, price is higher.And finish at negative-pressure operation, when extracting syringe needle, the cell tissue of being got in the needle tubing is sprayed in sleeve easily and is caused difficulty in the collection of institute's sample thief, dials pin and causes coming off of cancer cells to cause that the plantation of needle track and subcutaneous cancer fundamentally do not give solution to the subcutaneous routine negative pressure that comes loose yet.

Goal of the invention of the present utility model is to overcome the above-mentioned deficiency of prior art and provides a kind of simple in structure, one-handed performance, small volume and less weight, draws materials quick and precisely, draws thing easily collecting cell tissue extractor safe in utilization, low-cost.

The technical solution of the utility model is the syringe needle by needle point band sharp sword, sleeve, piston, compositions such as cell tissue filter sieve, dress piston in the sleeve, piston body adopts and adds long handle, make piston body than the long 3～6cm of sleeve cylindrical shell, it is 2～5cm that its collet of piston that makes cover be filled to the sleeve summit is held the distance of crimping for worn-out mouthful to sleeve, guarantee that piston packs into behind the sleeve, between piston collet and worn-out mouthful of end crimping of sleeve, can put 2～3 fingers into to hold the piston rear portion, withstand worn-out mouthful of end crimping of sleeve with thumb and forefinger, like this, it is stressed rationally to take out negative pressure, can easily carry out one hand suction negative pressure, the cell tissue filter sieve is adorned in connecing of sleeve sealing end in the needle nipple, connect the syringe needle that refills needle point band sharp sword on the needle nipple, the cell tissue filter sieve has the centralized collection cell, the effect of tissue, in the time of can also guaranteeing to be with in operation negative pressure to extract syringe needle, cell tissue is not sprayed in sleeve, avoided old-fashioned suction, pulled out pin and cause cancer cells to come off to cause the artificial growth of needle track and subcutaneous cancer knurl to the subcutaneous routine negative pressure that comes loose.

The diameter of said cell tissue filter sieve or out-to-out are equal to or slightly less than sleeve nipple internal diameter, have thread empty flower shape and small sieve aperture on the sieve sheet, the empty flower of the thread shape on the sieve sheet can be cruciform, polygonal (limit) shape, quincunx etc., the small screen-aperture on the sieve sheet is 1～0.5mm.

Fig. 1 is the structural representation of cell tissue extractor;

Fig. 2 is the telescopic synoptic diagram;

Fig. 3 is the synoptic diagram of cell tissue filter sieve.

Below in conjunction with accompanying drawing the utility model is described in further detail:

Among Fig. 1, draw the skinny needle head that forms by weldless steel tube in the syringe needle 1, be all sharp sword around the needle point hole, pin pump hole 2 is arranged in the syringe needle 1, the sleeve nipple 4 of sleeve 3 has a nipple endoporus step 5, in cell tissue filter sieve 6 is housed, piston 8 is put in the sleeves 3, the spacing that the piston front surface withstands worn-out mouthful of end crimping of sleeve sealing end back piston collet 9 and sleeve is 3.8cm.

Among Fig. 2, connecing of sleeve body 3 nipple endoporus step 5 is arranged on the needle nipple 4, cell tissue filter sieve 6 is placed on the nipple endoporus step 5.

Among Fig. 3, diameter is on the crosswise cell tissue filter sieve 6 of 2.5mm, and it is the sieve aperture 10 of 0.75mm that some diameters are arranged.

During use, left hand is fixed the lump of diseased region, the right hand is grasped steady extractor and is aimed at the lump inserting needle, after treating that syringe needle enters into lump, with syringe needle is that a left rotation and right rotation is scraped and got cell, hold exposed section, piston rear portion with the right hand middle finger and the third finger then, withstanding worn-out mouthful of end of sleeve crimping piston with thumb and forefinger moves backward and takes out negative pressure, when negative pressure reaches maximum, the pin of advancing and retreat repeatedly cuts cancer knurl small org for twice, be with negative pressure to transfer to syringe needle then, pin is inhaled thing (comprising the cancer tumor tissue) and is remained in the pin hole and do not come off at needle track or subcutaneous, avoids causing the artificial growth of cancer oncocyte.When the tumour sampling at position, under the guiding of acoustic image instrument, carry out deeply.

The utility model is simple in structure, small volume and less weight, with low cost, be easy to one-handed performance, the suction negative pressure is stressed rationally, draw materials quick and precisely, cancer oncocyte tissue is adsorbed on is convenient on the cell tissue filter sieve collect, avoided old-fashioned aspirator to dial pin and caused cancer cells to come off to cause the danger of needle track and subcutaneous cancer knurl artificial growth, used safer, reliable to the subcutaneous routine negative pressure that comes loose.

Claims

1, a kind of cell, tissue aspiration device, the syringe needle, sleeve, the piston that comprise the sharp ball of needle point pore area, it is characterized in that: the handle of piston (8) is an extended type, the long 3～6cm of piston body and sleeve cylindrical shell, and connecing of sleeve (3) has cell tissue filter sieve (6) between syringe needle (4) and syringe needle.

2, extractor as claimed in claim 1 is characterized in that on the sieve sheet of said cell, tissue filter sieve (6) thread empty flower shape and small sieve aperture (10) being arranged.

3, extractor as claimed in claim 1 or 2 is characterized in that the empty flower of the thread shape on the sieve sheet of said cell tissue filter sieve (6) is a cruciform, polygonal (limit) shape, quincunx.

4, extractor as claimed in claim 1 or 2 is characterized in that its diameter of small sieve aperture (10) of said cell tissue filter sieve (6) or out-to-out are 1～0.5mm.

5, extractor as claimed in claim 1 is characterized in that there is a step (5) needle nipple (4) the endoporus front portion that connects of sleeve (3), the dress overanxious sieve of cell tissue (6) in the step (5).