CN2059347U

CN2059347U - Once-used integral quantitative vacuum sampler of blood

Info

Publication number: CN2059347U
Application number: CN 90201784
Authority: CN
Inventors: 徐伟庆
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-02-17
Filing date: 1990-02-17
Publication date: 1990-07-18

Abstract

The utility model relates to a once-used integral quantitative vacuum sampler of blood, which is composed of a needle cylinder, a double-ended needle, a protective sleeve for the double-ended needle, a vacuum quantitative test tube, a protective sleeve for the vacuum quantitative test tube, and a transparent sealed tube. The double-ended needle is fixedly connected with the needle cylinder, the sealing tube contains part of the needle which is inserted into the needle cylinder at one end of the needle cylinder, and the sealing tube is sealed on the needle cylinder by liquid. The phenomenon of the blood backflow can be observed, the blood sampling is reliable, blood taking quantity is automatically fixed, and blood sampling with multiple test tubes after one puncture can be realized. The utility model is disposable, and the cross infections can be thoroughly prevented.

Description

Once-used integral quantitative vacuum sampler of blood

This utility model relates to a kind of medical apparatus, particularly a kind ofly is applicable to disposable combined vacuum quantitative hemostix.

Domestic development and produced a kind of Dispoable medical vacuum tube blood sample collection device, and obtained the China Patent Right (patent No.: 88205161).As shown in Figure 1, it is mainly by vacuum tube container 1, and chock plug 2, double needle 3, and needle stand 4, and flanged limit syringe 5 is formed.In addition, the minute hand end of double needle 3 has sheath 7 and hour hand end double needle 3 being loaded onto on the protheca by another sheath 8() protection.Wherein the inwall of the interface 6 of syringe 5 is the jack of trough of belt, and an end of needle stand 4 is the plug of band salient point; The coated anticoagulant 9 of vacuum tube container 1 inwall.Using method is as follows: pull up the sheath 8 on the hour hand head earlier; Needle stand 4 is inserted in the syringe interface 6, and make the plug salient point pass through slotted eye rotational lock to the right; Vacuum tube 1 is inserted syringe 5, chock plug 2 end faces are alignd with graduation mark on the syringe 5; Pull up long sheath 7, the minute hand head is injected human vas; With thumb pushing vacuum tube 1, make the hour hand spine wear chock plug 2 immediately, blood promptly is pumped into vacuum tube 1; Take out vacuum tube (blood sample), from blood vessel, withdraw from the minute hand head; Rock vacuum tube, make anticoagulant and blood sample mixed, can separate and coagulate.

Above-mentioned this catcher with other the blood drawing utensil compare, rapid operation, can prevent substantially blood sample with the external world multiple contact stain and patient between cross infection.But also has following shortcoming, (1) syringe needle 3 and needle stand 4 thereof are the branch body structure with syringe 5, like this, only change pin in actual use and do not change syringe, not only make complete appliance not reach disposable purpose, and, blood sample is trickled down inside and outside syringe, cause the hidden danger of cross infection; In addition, the loosening of pin might take place in the vascular puncture process, even the phenomenon that comes off; (2) do not observed the structure of blood back phenomenon, whether correctly enter vein blood vessel so can not learn syringe needle, as do not thrust blood vessel, must extract complete appliance, cause the vacuum tube loss of vacuum and discard, reload the row puncture again of new vacuum tube, bring misery to patient; (3) this vacuum tube 1 can't accurately obtain required blood sampling volume when blood sampling, thereby makes blood sample too much or very few.In addition, its heap(ed) capacity of this vacuum tube is 10 milliliters, in the time of need surpassing this amount as blood sample, then needs secondary puncture, two cover utensil, very inconvenience.

The purpose of this utility model is to overcome above-mentioned shortcoming, and a kind of disposable use is provided, and the one-time puncture multitube is gathered, and the hemostix that can quantitatively take a blood sample.

For achieving the above object, this utility model provides regularly hemostix of a kind of disposable use combined vacuum, and it comprises a flanged limit syringe, a double needle and sheath thereof, a vacuum quantitative test tube and on chock plug; Wherein an end syringe needle of double needle is fixedlyed connected with syringe after inserting in the syringe, and vacuum quantitative in vitro has the air capacity by the decision of this test tube blood drawing amount accordingly; The sealed tube that also comprises a substantially transparent, liquid sealing is on an end inwall of syringe in syringe for its opening end, and the other end that all contains to live double needle inserts that part of in the syringe, and can be punctured by double needle, and after extracting double needle, perforation is shut automatically after the closing in by its elastic energy.

Introduction and the description of the drawings thereof of following basis to implementing embodiment of the present utility model with clear and understand structure of the present utility model particularly, used and advantage.

Wherein accompanying drawing is:

Fig. 1 is the longitudinal section of the Dispoable medical vacuum tube blood sample collection device of prior art; With

Fig. 2 is the longitudinal section of this utility model one embodiment.

As shown in Figure 2, the disposable use combined vacuum quantitative hemostix of present embodiment comprises:

One syringe 4 is made with transparent material (as polypropylene), is a cylindrical shape substantially, and the one end has one along its long longitudinally thin circular hole, and the other end has an outside flange, and the heart is a uncovered big hole therein;

The double needle 2 of one blood sampling usefulness, an its end syringe needle is inserted in the inner chamber of syringe 4 from the elongated hole of above-mentioned syringe 4 one ends, and with as binding agent 7 bonding modes of epoxy resin and so on or with other connected mode it being firmly secured on the syringe 4, its other end syringe needle exposes to outside the syringe 4;

One sheath 1 is set on the end outer wall of syringe 4, and all covers the exposed parts of double needle 2;

One sealed tube 3, make with translucent elastic material as medical latex and so on, its shape is as a test tube, one end uncovered is set on the end inwall of syringe 4 on the whole extended annular convex by self elasticity liquid sealing in syringe 4, and all contains that part of in the insertion syringe 4 of living in to state double needle 2.When puncture blood collecting, this part needle point of double needle can puncture this pipe, and after extracting syringe needle, shuts after by its elastic energy perforation being closed up automatically; And

One vacuum quantitative test tube (glass) 6 and on chock plug (druggist rubber sundrier) 5, after taking out air in certain amount according to its greatest content amount, promptly can be used to once extract required blood volume, play quantitative blood drawing effect, in other words, this in vitro has the air capacity by the corresponding once blood drawing amount decision of this test tube.This test tube and chock plug assembly can freely insert in the syringe 4 from the opening end of above-mentioned syringe 4 one ends, enter in the test tube 6 so that can make of double needle 2 pierce through chock plug 5.

The using and operate as follows of above-mentioned this hemostix:

At first, shed the sheath 1 of double needle 2.Then, hold the syringe 4 that is fixedly connected with double needle 2, make the syringe needle puncture enter the human vein blood vessel.As puncture accurately, the sealed tube 3 that then sees through syringe 4 and inside thereof can clearly see that blood enters in the sealed tube 3, until being full of sealed tube.At this moment, can with vacuum quantitative test tube 6 and on chock plug 5 put into syringe 4, and before push away test tube 6 ends, make chock plug 5 withstand the syringe needle of an end of sealed tube 3 and inner double needle 2 thereof, continue to force in test tube again and make double needle needle pierces chock plug 5 and enter in the test tube 6.Like this, blood just is drawn in the test tube 6 under the vacuum attraction in vacuum test tube 6.Because the blood drawing amount of various test tubes is what (being vacuum) that are decided by its air capacity of depositing, so stop when in vitro flowing into when blood, the blood flow volume that is drawn at this moment i.e. the corresponding blood drawing amount of this pipe.More as required blood sample amount, a test tube blood drawing is not enough, then can extract this test tube, reuse the second, even the 3rd test tube continue suction, and above-mentioned double needle 2 still can remain in former puncture position in human vas and constant, and, after extracting test tube and chock plug, the aperture of being worn out by syringe needle on the sealed tube 3 can close up automatically and seal, and can not cause the blood outflow.Can find out at this: when carrying out the operation of this kind one-time puncture multitube blood sampling, the setting of sealed tube 3 of the present utility model can be avoided taking place changing the phenomenon that test tube space-time has channeling goes in the human vas, and this then will take place in the hemostix of prior art.

After blood sampling finishes, extract vacuum test tube 6.

2 of exhausted syringe 4 and double needle are abandoned it together as expendable consumed product.

Structure according to above-mentioned this hemostix of the present utility model forms and operating position, is not difficult to find out that it has the following advantages:

One, double-ended needle 2 directly is fixed on the syringe 4, is convenient to the user and correctly grasps puncture direction and size firmly, and can avoid taking place pin and come off mutually with syringe. Abandon after finishing using, really reach and satisfy the purpose that hygiene department advocates the disposable requirement of medical running stores, thoroughly prevent cross-infection;

Its two, can reach the quantitative collections of different amount blood, in case the too much waste of blood collection and very few trouble can improve medical level, reduce patient's misery;

Its three, the sealed tube of setting can help to observe the blood backflow phenomenon, is convenient to user patient is implemented correct puncture.In addition, need do the chemical examination of multinomial content sometimes to patient's once blood drawing, like this, this utility model can reach the purpose to the many test tube blood samplings of patient's one-time puncture.

In a word, this utility model has overcome the shortcoming of prior art with appliances, has easy to usely, and blood sampling is reliable, disposable advantage.

Claims

1, a kind of disposable use combined vacuum quantitative hemostix, it comprise a flanged limit syringe 4, one double needle 2 and sheath 1, one vacuum quantitative test tube 6 thereof and on chock plug 5, it is characterized in that an end syringe needle of described double needle 2 is fixedlyed connected with described syringe 4 after inserting in the described syringe 4; There is air capacity in the described vacuum quantitative test tube 6 by described vacuum quantitative test tube 6 corresponding blood drawing amount decisions; The enclosed elastic pipe 3 that also comprises a substantially transparent, its opening end in described syringe 4 liquid sealing on an end inwall of described syringe 4, and can all contain the other end of stating double needle 2 in the residence and insert that part of in the described syringe 4, and can be punctured by described double needle 2, and can perforation be shut automatically after the closing in after removing double needle 2 dialling.