CN211609808U

CN211609808U - Novel anti-pop-up venous blood taking needle

Info

Publication number: CN211609808U
Application number: CN201922242882.3U
Authority: CN
Inventors: 司冬玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-16
Filing date: 2019-12-16
Publication date: 2020-10-02
Anticipated expiration: 2029-12-16

Abstract

The utility model provides a novel prevent vein blood taking needle that pops out, includes vein blood taking needle subassembly, the continuous negative pressure vacuum test tube of blood taking needle subassembly adaptation, vein blood taking needle subassembly includes the pipe, pipe one end fixed connection vein blood taking needle, the other end fixed connection tail needle of pipe, set up shellproof structure on the tail needle. Through setting up shellproof structure on the tail needle at the vein blood taking needle for the plug card of the rubber of negative pressure vacuum acquisition pipe is on the draw-in groove of tail needle or the plug blocks the arch on the tail needle, makes the tail needle stop in the negative pressure vacuum acquisition pipe, need extract the tail needle hard and just can make the tail needle break away from the negative pressure vacuum acquisition pipe.

Description

Novel anti-pop-up venous blood taking needle

Technical Field

The utility model relates to a novel prevent vein blood taking needle that pops out.

Background

In medical field, medical personnel are through gathering and inspection blood, through the analysis to blood composition detect know human physiology and pathological condition, gather blood in-process and often use the blood taking needle, current blood taking needle has greatly made things convenient for medical personnel to the collection of blood, however, in the tail needle of blood taking needle pierces negative pressure vacuum blood collection tube, because the atmospheric pressure problem in the negative pressure vacuum blood collection tube pops out the negative pressure vacuum blood collection tube outside with the tail needle easily, cause the pause of blood collection. Sometimes, in order to prevent that the tail needle from popping out, can buckle the tail needle manual work, make the tail needle of buckling difficult follow negative pressure vacuum blood sampling intraductal pop out, but when carrying out multitube blood sampling, the tail needle of buckling sometimes can spill tail needle rubber hose, and when the tail needle of buckling pricked another negative pressure vacuum blood sampling pipe, the too big or even fracture of tail needle angle of buckling can appear, can't puncture new negative pressure vacuum blood sampling pipe's rubber cap, the vein blood sampling needle that leads to more renewing takes a blood sample again, cause patient and nurse to be nervous, psychological pressure increases, and waste time.

Disclosure of Invention

The to-be-solved technical problem of the utility model is to prevent that the tail needle of vein blood taking needle from popping out in the negative pressure vacuum blood taking tube, for solving above-mentioned problem, the utility model provides a novel prevent vein blood taking needle that pops out.

The purpose of the utility model is realized with the following mode:

the utility model provides a novel prevent vein blood taking needle that pops out, includes vein blood taking needle subassembly, the continuous negative pressure vacuum test tube of blood taking needle subassembly adaptation, vein blood taking needle subassembly includes the pipe, pipe one end fixed connection vein blood taking needle, the other end fixed connection tail needle of pipe, set up shellproof structure on the tail needle.

The anti-ejection structure is characterized in that a groove is formed in the outer wall of the middle of a needle body of the tail needle.

The anti-ejection structure is characterized in that a convex block is arranged on the outer wall of the middle part of the needle body of the tail needle.

The anti-ejection structure comprises a convex block and a groove fixedly connected with the tail end of the convex block.

Compared with the prior art, the utility model has the advantages that: through set up draw-in groove or the arch of arcuation on the tail needle at the vein blood taking needle for the plug card of the rubber of negative pressure vacuum acquisition pipe is on the draw-in groove of tail needle or the plug blocks the arch on the tail needle, makes the tail needle stop in the negative pressure vacuum acquisition pipe, need extract the tail needle hard and just can make the tail needle break away from negative pressure vacuum acquisition pipe.

Drawings

Fig. 1 is a structural diagram of the present invention.

Figure 2 is a schematic view of a first anti-ballistic configuration.

Figure 3 is a schematic view of a second anti-ballistic configuration.

Fig. 4 is a schematic view of a third anti-pop structure.

FIG. 5 is a connection diagram of a first ejection prevention structure and a negative pressure vacuum blood collection tube.

Fig. 6 is a connection diagram of a second ejection prevention structure and a negative pressure vacuum blood collection tube.

Fig. 7 is a connection diagram of a third anti-ejection structure and a negative pressure vacuum blood collection tube.

Wherein, 1 is a venous blood collection needle assembly; 11 is a blood collection needle; 12 is a needle cap; 13 is a venous blood taking needle stand; 14 is a needle holder; 15 is a soft catheter; 16 is a connecting member; 17 is a linker; 18 is a rubber ring; 2 is a blood collection tube; 21 is blood collection tube lumen; 22 is a rubber plug; 220 is pinhole I, 221 is pinhole II; 3 is a tail needle; 31 is a groove; 32 is a bump; and 4 is a rubber hose.

Detailed Description

As shown in the attached

drawings

1, 2, 3, 4, 5, 6 and 7, the utility model comprises a vein blood taking needle assembly 1 and a blood taking tube 2 which is adaptive connected with the vein blood taking needle assembly and has negative pressure vacuum. The intravenous blood taking needle assembly 1 comprises a transparent soft catheter 15, one end of the soft catheter 15 is in threaded connection with a connecting piece 16, threads are arranged on the outer wall of the connecting piece 16, the soft catheter 15 is tightly connected with the connecting piece 16 through the threads on the connecting piece 16, the other end of the connecting piece 16 is fixedly connected with a needle base 13, the outer wall of the needle base 13 is symmetrically hinged with a needle holder 14, the needle holder 14 is in a vertical state in a non-working state, a blood taking needle 11 is fixedly connected to the top of the needle base 13, a needle cap 12 is sleeved outside the blood taking needle 11, a limiting bulge is arranged on the outer wall of the top of the needle base 13, a limiting groove matched with the; the other end of the soft catheter 15 is connected with a connector 17 through threads, the shell in the front of the connector 17 is provided with threads, the shell in the middle of the connector 17 is sleeved with a rubber ring 18, the rear of the connector 17 is fixedly connected with a tail needle seat (not marked in the figure), the tail needle seat is fixedly connected with a tail needle 3, a rubber hose 4 is sleeved outside the tail needle 3, and a bullet-proof structure is arranged on the tail needle 13. Negative pressure vacuum test tube 2 is provided with the screw thread (not drawn in the picture) including the heparin tube body on the inner wall on heparin tube body upper portion, and heparin tube body top threaded connection and heparin tube inner wall complex rubber plug 22, the space that 2 inner walls of heparin tube and plug 22 formed is heparin tube lumen 21.

The anti-pop structure on the tail needle 3 means that the outer wall of the needle body in the middle of the tail needle 3 is provided with an arc-shaped clamping groove 31, so that the diameter of the middle of the tail needle 3 is smaller than the diameters of other parts of the tail needle 3. The purpose is that tail needle 3 pierces the plug 22 back on the heparin tube 2, even there is the tail needle to pop out the elasticity of plug 22, nevertheless because plug 22 is soft rubber, fills in back rubber and fills to draw-in groove 31 department, and the pinhole card on the tail needle plug 22 is inside draw-in groove 31 promptly, and the clamp power is greater than elasticity far away this moment for tail needle 3 can't pop out plug 22 outside.

Preferably, the anti-pop structure on the tail needle 3 means that the outer wall of the needle body in the middle of the tail needle 3 is provided with an arc-shaped bulge 32, so that the diameter of the middle of the tail needle 3 is larger than the diameter of the other parts of the tail needle 31. The purpose is that after the plug 22 on the heparin tube 2 was pierced to the tail needle, protruding 32 stayed in heparin tube lumen 21, protruding 32 played the effect of dog to plug 22 this moment, stopped that tail needle 3 pops out outside plug 22.

Preferably, the anti-popping structure on the tail needle 3 means that the outer wall of the needle body in the middle of the tail needle 3 is provided with an arc-shaped protrusion 32, and the tail end of the protrusion 32 (i.e. the end close to the needle seat of the tail needle) is fixedly connected with the arc-shaped groove 31, so that the pin hole on the rubber plug 22 is clamped in the clamping groove 31, and the protrusion 32 can also serve as a limiting block to play a role in preventing the tail needle 3 from popping out.

The working process of the utility model is as follows: the blood collection needle is used in the same way as a general blood collection procedure. Firstly, the needle cap 12 is pushed forwards until the needle cap 12 is taken down from a needle seat 13 of the blood taking needle, at the moment, the blood taking needle 11 is exposed outside, the needle holder 14 in a vertical state is held by a hand to pierce the sharp end of the blood taking needle 11 into the vein of the human body, and then the needle holder 14 is immediately rotated to a horizontal state to be tightly attached to the lower end of the arm vein of the human body; then, the rubber ring 18 sleeved outside the joint 17 is held by one hand, the vacuum blood collection tube 2 is held by the other hand, the tail needle 3 is forcibly punctured into the bottom of the rubber hose 4 to pierce the rubber plug 22 of the blood collection tube 2, so that the tail needle 3 and the anti-ejection structure on the tail needle 13 are completely penetrated into the lumen 21 of the blood collection tube, at the moment, the rubber hose 4 is compressed and placed outside the blood collection tube 2, and due to the action of the negative pressure in the blood collection tube 2, blood sequentially enters the needle seat 13, the connecting piece 16, the transparent hose 15, the joint 17 and the tail needle 3 from the blood collection needle 11 and finally flows into the lumen 21 of the collection tube.

The anti-ejection structure on the tail needle 3 is that a groove 31 is arranged on the outer wall of the middle part of the tail needle 3, when the tail needle 13 tends to eject the blood collection tube cavity 21, a needle hole I220 matched with the groove 31 on the rubber plug 22 firmly clamps the groove 31, the sliding of the tail needle 13 is limited, and the tail needle 13 is stopped in the blood collection tube cavity 21; the anti-ejection structure on the tail needle 3 is that the protrusion 32 is arranged on the outer wall of the middle part of the tail needle 3, when the tail needle 3 tends to eject the blood collection tube cavity 21, the tail needle 3 slides on the rubber plug 22 until the front end (the end close to the blood collection tube cavity 22) of the cylindrical needle hole II 221 contacts with the protrusion 32, and at the moment, the protrusion 32 plays a role of a limiting block, so that the tail needle 13 and the protrusion 32 stay in the blood collection tube cavity 21; prevent on the tail needle 3 and pop out the structure and set up protruding 32 for 3 middle part outer walls at the tail needle to at the end of protruding 32 (being close to the one end of 3 roots of tail needle promptly) fixed connection recess 32, when tail needle 3 has the trend of popping out blood collection tube lumen 21, tail needle 3 slides on rubber plug 22, until pinhole I220 firmly block recess 31, protruding 32 stops inside blood collection tube lumen 22, recess 31 plays dual spacing effect with protruding 32, stops tail needle 13 in blood collection tube lumen 21. The anti-ejection structure prevents the tail needle 3 from sliding on the rubber plug 22, and prevents the tail needle 3 from popping out of the blood collection tube cavity 21;

after a certain amount of blood is collected, the tail needle 3 is pulled out with a little force, at the moment, the tail needle 3 together with the anti-ejection structure on the tail needle 3 pulls out the rubber plug 22, and meanwhile, the rubber hose 4 is completely extended to a closed state, and the tail needle 3 is completely wrapped inside the closed rubber hose 4; then, the tail needle 3 is punctured into a new negative pressure vacuum blood collection tube, and blood collection is continued until the required blood volume is collected; finally, the tail needle 3 is pulled off, the same as the follow-up process of the ordinary blood collection, the needle holder 14 tightly attached to the human body is rotated to the vertical state, the blood collection needle 11 is pulled out from the vein of the human body by holding the needle holder 14 with hands, the needle seat 13 of the blood collection needle moves backwards, the needle cap 12 is covered on the needle seat 13, and the blood collection needle 11 is completely wrapped inside the needle cap 12. At this point, the venous blood collection needle assembly 1 can be discarded as required after the blood collection operation is completed.

The anti-ejection structure on the tail needle 3 can also be applied to transfusion needles.

What has been described above is only the preferred embodiments of the present invention, and it should be noted that, for those skilled in the art, without departing from the overall concept of the present invention, a plurality of changes and improvements can be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the effect of the present invention and the utility of the patent.

Claims

1. The utility model provides a novel prevent vein blood taking needle that pops out, includes vein blood taking needle subassembly, the continuous negative pressure vacuum test tube of blood taking needle subassembly adaptation, vein blood taking needle subassembly includes the pipe, pipe one end fixed connection vein blood taking needle, the other end fixed connection tail needle of pipe, its characterized in that: and the tail needle is provided with a bullet-proof structure.

2. A novel anti-pop lancet for intravenous blood of claim 1, wherein: the anti-ejection structure is characterized in that a groove is formed in the outer wall of the middle of a needle body of the tail needle.

3. The novel anti-ejection venous blood taking needle as claimed in claim 1, wherein the anti-ejection structure is that a bump is arranged on the outer wall of the middle part of the needle body of the tail needle.

4. The novel anti-ejection venous blood taking needle as claimed in claim 3, wherein the anti-ejection structure comprises a bump and a groove fixedly connected with the end of the bump.