CN206473329U - Disposable safe blood taking needle - Google Patents

Abstract

Disposable safe blood taking needle, there is syringe needle the upper end of needle body, locked groove is arranged at the bottom of needle body, there is lockhole on needle guard, needle body loads in needle guard, described locked groove is corresponding with described lockhole, lock ball is put into described lockhole, lock ball is partly into described locked groove, in the outside suit lock tube of needle guard, spring is placed in needle guard, spring base is installed in the afterbody of needle guard, protective cap is installed on the top of needle guard, protective cap covers the blood taking needle of needle body upper end, there is release groove on the inwall of lock tube, lock tube is interference fitted with needle guard, stop collar is installed outside needle guard, when lock tube is contacted with stop collar, described release groove alignment lock ball, lock ball can be rolled out in described locked groove, needle body departs from after ejection, it can not restore, can only be disposable, safety and sanitation are convenient, it can avoid reusing, structure of the present utility model is more simple in construction than existing blood taking needle, good processing, production cost is low, it is easy to spread, with significant economic benefit and social benefit.

Description

Disposable safe blood taking needle

Technical field

The utility model is the device of medical field, is a kind of disposable safe blood taking needle.

Background technology

The blood taking needle that current medical field is used is generally to force disposal type, and the problem of there is secondary use easily is suffered from Mutual infection between person, there is very big potential safety hazard.Existing disposable blood taking needle is complicated, processing difficulties, and cost is high, no Easy popularization and application.Chinese patent application：201510031080.8 disposable blood taking needle, alleviates above-mentioned problem, but Above-mentioned problem is not fully solved, structure is not simple enough, still there are processing difficulties, cost is high, it is not easy to which promoting should The problem of using.

The content of the invention

The purpose of this utility model is a kind of disposable safe blood taking needle of design, overcomes above-mentioned problem, ties it Structure is simple, and good processing, production cost is low, easy to utilize, it is impossible to reuse.

What the purpose of this utility model was realized in：Including protective cap, needle body, lock tube, lock ball, stop collar, needle guard, bullet There is syringe needle spring, spring base, the upper end of needle body, and the bottom of needle body, which has, lockhole on locked groove, needle guard, and needle body loads in needle guard, described Locked groove it is corresponding with described lockhole, be put into lock ball in described lockhole, lock ball is partly into described locked groove, The outside suit lock tube of needle guard, lock tube limitation lock ball movement, prevents lock ball from being rolled out in described locked groove, needle body is connected to In needle guard, prevent needle body from moving axially, spring is placed in needle guard, spring base, the upper end of spring are installed in the afterbody of needle guard Needle body is pushed down, the lower end of spring is sitting on spring base, spring base makes spring by compression pretension, and protection is installed on the top of needle guard Cap, protective cap, which is covered, release groove on the blood taking needle of needle body upper end, the inwall of lock tube, described release groove is on lock ball, The upper end of lock tube is spacing by the shoulder on needle guard, and lock tube is interference fitted with needle guard, and lock tube has certain rub when being slided on needle guard Wipe power, stop collar is installed outside needle guard, has a certain distance between the upper surface and lock tube lower end of stop collar, make lock tube with it is spacing During set contact, described release groove alignment lock ball, lock ball can be rolled out in described locked groove.

The beneficial effects of the utility model are：Protective cap is pulled out when using, blood taking needle is adjacent to patient skin, hand holds pin Set, finger pushes down on lock tube, release groove is directed at lockhole, lock ball is rolled out in locked groove under the thrust of spring, and needle body takes off From rear ejection, blood taking needle reaches puncture purpose, completes blood sampling.Needle body departs from after ejection, it is impossible to restore, and the utility model can only one Secondary property is used, safety and sanitation, can avoid reusing, structure of the present utility model is more simple in construction than existing blood taking needle, Good processing, production cost is low, it is easy to promote, with significant economic benefit and social benefit.

Brief description of the drawings

Fig. 1 is installation diagram of the present utility model.

Embodiment

Embodiment of the present utility model is illustrated below in conjunction with the accompanying drawings：

As shown in figure 1, embodiment of the present utility model includes protective cap 1, needle body 2, lock tube 4, lock ball 5, stop collar 6, pin There is syringe needle set 7, spring 8, spring base 9, the upper end of needle body 2, and the bottom of needle body 2, which has, lockhole on locked groove, needle guard 7, needle body 2 loads In needle guard 7, described locked groove is corresponding with described lockhole, be put into lock ball 5 in described lockhole, and lock ball 5 is partly into In described locked groove, in the outside suit lock tube 4 of needle guard 7, the limitation lock ball 5 of lock tube 4 is moved, and prevents lock ball 5 from from described lock Rolled out in groove, needle body 2 is connected in needle guard 7, being lockable needle body 2 can not move axially, spring 8 is placed in needle guard 7, The afterbody of needle guard 7 installs spring base 9, and needle body 2 is pushed down in the upper end of spring 8, and the lower end of spring 8 is sitting on spring base 9, spring base 9 Make spring 8 by compression pretension, stored energy installs protective cap 1 on the top of needle guard 7, and protective cap 1 covers adopting for the upper end of needle body 2 Blood pin, make blood taking needle keep cleaning, also user can be protected not stabbed by blood taking needle, play safeguard protection effect, lock tube 4 it is interior There is release groove 3 on wall, described release groove 3 is on lock ball 5, and the upper end of lock tube 4 is spacing by the shoulder on needle guard 7, lock tube 4 It is interference fitted with needle guard 7, lock tube 4 has certain frictional force when being slided on needle guard 7, it is ensured that do not moved using preceding, needle body 2 will not It is mobile, in the outer installation stop collar 6 of needle guard 7, there is a certain distance between the upper surface and the lower end of lock tube 4 of stop collar 6, make lock tube 4 When being contacted with stop collar 6, the described alignment lock ball 5 of release groove 3, lock ball 5 can be rolled out in described locked groove.

Descending distance is limited set 6 and limited during lock tube 4, is for reliability design of the present utility model.

Spring base is interference fitted with needle guard, it is produced certain adhesion, and spring base cannot come off with needle guard, this peace Dress mode is simple, good processing.

Claims (1)

1. disposable safe blood taking needle, including protective cap（1）, needle body（2）, lock tube（4）, lock ball（5）, stop collar（6）, needle guard （7）, spring（8）, spring base（9）, needle body（2）Upper end have syringe needle, it is characterized in that：Needle body（2）Bottom have locked groove, needle guard （7）On have lockhole, needle body（2）Load needle guard（7）Interior, described locked groove is corresponding with described lockhole, is put in described lockhole Enter lock ball（5）, lock ball（5）Be partly into described locked groove, in needle guard（7）Outside suit lock tube（4）, lock tube（4） Limit lock ball（5）It is mobile, make lock ball（5）It can not be rolled out in described locked groove, by needle body（2）It is connected to needle guard（7）It is interior, make pin Body（2）It can not move axially, in needle guard（7）Interior placement spring（8）, in needle guard（7）Afterbody install spring base（9）, spring（8） Upper end push down needle body（2）, spring（8）Lower end be sitting in spring base（9）On, spring base（9）Make spring（8）By compression pretension, In needle guard（7）Top install protective cap（1）, protective cap（1）Cover needle body（2）The blood taking needle of upper end, lock tube（4）Inwall on There is release groove（3）, described release groove（3）In lock ball（5）On, lock tube（4）Upper end by needle guard（7）On shoulder limit Position, lock tube（4）With needle guard（7）Interference fit, lock tube（4）In needle guard（7）There is certain frictional force during upper slip, in needle guard（7） Outer installation stop collar（6）, stop collar（6）Upper surface and lock tube（4）There is a certain distance between lower end, make lock tube（4）With limit Position set（6）During contact, described release groove（3）It is directed at lock ball（5）, lock ball（5）It can be rolled out in described locked groove.