CN2143098Y

CN2143098Y - Disposable negtive-pressure closed liquid sampler

Info

Publication number: CN2143098Y
Application number: CN 92237663
Authority: CN
Inventors: 胡志平
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-11-03
Filing date: 1992-11-03
Publication date: 1993-10-06
Anticipated expiration: 2002-11-03

Abstract

The utility model relates to a disposable negative pressure closed liquid sampler, which belongs to a clinical examination utensil used for medical treatment industry. The utility model is composed of a puncture needle, a transparent thin soft pipe, a regulator and an acquisition test pipe. A compressible air bag is arranged on the cover of the test pipe; the inner part of the cover is provided with an air exhaust system which makes the air bag communicated with outside air; an air inlet system is arranged on the utility model, which makes the air bag communicated with the test pipe. The inner part of the test pipe generates negative pressure through the compressible air bag. When the puncture needle carry out conventional puncture for a human body, the actions of pumping and suction can be automatically generated; the acquisition work of body fluid is achieved. The acquisition work of the utensil is carried out under a closed state. The utility model has the advantages of easy, safe and fast operation and high puncture success ratio.

Description

Disposable negtive-pressure closed liquid sampler

This utility model is the Clinical Laboratory utensil in the medical industry, specifically disposable liquid specimen negative pressure enclosed harvester.

In Clinical Laboratory, carry out blood, cerebrospinal fluid, vomica liquid, peritoneal fluid etc. when checking, gather the important procedure that the liquid mark is not only this project check, and be the key that ensures whole checkout procedure success.But the essentially no very change of the method for collection liquid specimen at present, with the collecting blood sample is example, when getting greater than 1 milliliter blood preparation, must select the syringe of the respective volume of sterilization for use, venipuncture in advance behind the extraction blood, is taken off syringe needle again, syringe nipple is slowly pushed blood in the test tube near inboard wall of test tube, so far finished gatherer process.There are a lot of defectives in this acquisition method.At first be that this a series of action is more numerous and diverse, operator's energy is wanted high concentration; Next is in the sampling observation process there to be repeatedly and the room air touch opportunity blood, and this is particularly outstanding when the bedside blood sample collection of ward, if this specimen when check is found pathogenic bacterium are arranged as antibacterial culturing, just can not be got rid of the pollution factor of getting timestamp; When leaving and taking blood specimen and check potassium content, specification requirement is higher, has both required during injecting tube slowly must not rock in addition, is strictly on guard against that haemolysis and bubble sneak into, and prevents from again blood coagulation from the operator have been proposed a difficult problem; If careless manipulation easily causes the pollution of blood to operator's hand in addition.

This utility model is to provide a kind of novel disposable liquid specimen negative pressure enclosed harvester, some defectives when it can overcome with the said method collect specimen, meet the requirement of aseptic technique, safe, easy, in the whole process of gathering the liquid specimen, be in full closeding state.

By the disposable liquid specimen negative pressure enclosed harvester that the utility model proposes, it is made up of puncture needle, transparent small hose, actuator and collection test tube, it is characterized in that test tube covers is provided with air bag, air bag leads to outside the capsule through test tube lid inner vent and exhaust chamber, through inlet plenum and air inlet with in vitro communicate, the transparent thin tube of band puncture needle leads to inboard wall of test tube in fast siphunculus road in the test tube lid.

Fig. 1 is this utility model structural representation.

Embodiment is explained in detail this utility model below in conjunction with accompanying drawing.

Air bag 1 is arranged on the top of test tube lid 11, in spring 2 is housed, the air bag 1 lower end test tube lid 11 of ining succession.Be provided with exhaust chamber 3 in the test tube lid, the one end communicates with air bag 1 by steam vent 13, and an end can aerofluxus outside capsule, in be provided with an aerofluxus flap valve 4; Also have inlet plenum 5 in the test tube lid, the one end communicates with test tube by air inlet 14, and an end can be to air bag 1 air inlet, in be provided with an air inlet flap valve 6.Also have a connecting pipe road in the test tube lid, the one end stretches to outside the pipe, connects a puncture needle 8 with transparent small hose 10, and an actuator 9 is housed on the flexible pipe, and puncture needle, actuator and flexible pipe adopt general transfusion apparatus.One little section transparent small hose of another termination of connecting pipeline in the pipe lid, the end of pipe is attached on the wall of gathering test tube 7, is printed on a milliliter scale on the wall of test tube 7, is convenient to grasp and gathers liquid measure.For the test tube lid is contacted closely with test tube, prevent gas leakage, available adhesive tape 12 pastes a circle and is sealed.Owing to consider disposable use, except spring was manufactured with metal, test tube, test tube lid, air bag were all made of non-toxic plastic, and are carried out sterilization with cobalt bOr irradiance method.

The operation principle of this utility model embodiment and process are such: close actuator, air bag is pressed down, air inlet is blocked by the air inlet flap valve, and the gas in the air bag can only discharge by steam vent, loosens air bag then, this moment, air bag produced negative pressure, make the aerofluxus flap valve block steam vent, and the air inlet flap valve is inhaled, and air inlet is opened, the air bag of whole test tube communicates, and also produces negative pressure.At this moment carry out the routine puncture with puncture needle, open actuator after puncturing successfully, can produce suction action, body fluid enters test tube by puncture needle, flexible pipe, flows down along tube wall, when obtaining desired liquid sample amount, close actuator, suction action stops, and extracts puncture needle, it is thrust on the air bag, and whole liquid collection of specimens work finishes.

Use this utility model collection liquid specimen, owing in the closed conduit that is isolated from the outside relatively, carry out, and be a continuous process, when blood drawing, can not cause blood coagulation especially, can not cause the destruction of hemocyte, improve the success rate of puncture greatly, also can not pollute operator's hand.Therefore has easy and simple to handle, safe, advantage rapidly.

This utility model is a composition formula, extracts when finishing check, takes pipe sealing adhesive tape apart, and test tube is separated with the test tube lid, can chemically examine body fluid in vitro.

Claims

1, a kind of medical inspection utensil, disposable liquid specimen negative pressure enclosed harvester, it is made up of puncture needle, actuator and collection test tube, it is characterized in that test tube covers is provided with air bag, air bag in test tube lid steam vent and exhaust chamber with lead to outside the capsule, through inlet plenum and air inlet with in vitro communicate, the transparent small hose of band puncture needle leads to inboard wall of test tube in fast siphunculus road in the test tube lid.

2, by the described disposable liquid mark negative pressure enclosed harvester of claim 1, it is characterized in that in exhaust chamber, being provided with the aerofluxus flap valve, the gas only export but no import of control air bag is provided with the air inlet flap valve in inlet plenum, control invisible spectro gas and can only flow to air bag and can not reflux.

3, by claim 1 or 2 described disposable liquid specimen negative pressure enclosed harvesters, it is characterized in that being equipped with in the air bag spring.