CN213430130U

CN213430130U - Rubber buffer, tube cap and heparin tube of vacuum heparin tube

Info

Publication number: CN213430130U
Application number: CN202020619167.7U
Authority: CN
Inventors: 郭斌; 黄光成; 谢宁; 邢艳; 郭晓兰; 何皓宇
Original assignee: Affiliated Hospital of North Sichuan Medical College
Current assignee: Affiliated Hospital of North Sichuan Medical College
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-06-15
Anticipated expiration: 2030-04-22

Abstract

The utility model discloses a vacuum test tube's rubber buffer, tube cap and heparin tube, rubber buffer include the cock body and lower cock body, the diameter of going up the cock body is greater than lower cock body, a plurality of perforating holes have been seted up on the lateral wall of lower cock body, the upper and lower both ends of perforating hole all are located down on the cock body lateral wall and both ends are different to the distance of last cock body. Tube cap includes above-mentioned rubber buffer, and the heparin tube includes above-mentioned tube cap. The utility model discloses can solve among the prior art problem that the bubble can appear when extracting the rubber buffer in the vacuum test tube, simple structure, sealed effectual, the feature of environmental protection is good.

Description

Rubber buffer, tube cap and heparin tube of vacuum heparin tube

Technical Field

The utility model relates to the field of medical equipment, concretely relates to rubber buffer, tube cap and heparin tube of vacuum blood collection tube.

Background

Along with the improvement of the automation degree of sample detection in a clinical laboratory, a sample detection assembly line system integrating sample introduction, information acquisition, centrifugation and cover pulling and computer detection is widely applied to various laboratories, so that the speed of clinical sample detection is greatly improved. However, through long-time observation of the sample detection process of the assembly line system, negative pressure of a certain degree still exists in the tube after blood collection is usually completed, and when the rubber plug of the blood collection tube is pulled out after centrifugation, the gas outside the tube quickly enters the tube, so that obvious plasma (clear) liquid level surges, obvious bubbles are formed on the plasma (clear) liquid level, the sample suction of a sample adding needle of a follow-up instrument is inaccurate, the detection of a blood sample item is seriously interfered, and the follow-up analysis is interfered.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the above-mentioned among the prior art not enough, provide a can solve among the prior art vacuum test tube can appear the rubber buffer of the problem of bubble when extracting the rubber buffer, tube cap and heparin tube.

In order to solve the technical problem, the utility model discloses a following technical scheme:

first aspect provides a vacuum test tube's rubber buffer, and it includes cock body and lower cock body, the diameter of going up the cock body is greater than lower cock body, a plurality of perforating holes have been seted up on the lateral wall of lower cock body, the upper and lower both ends of perforating hole all are located down on the cock body lateral wall and both ends are different to the distance of last cock body.

In a second aspect, the utility model also provides a tube cap of vacuum test tube, it includes above-mentioned rubber buffer, and the tube cap includes lid and lower lid, goes up the lid and is provided with limit flange down between the lid, the last cock body of rubber buffer is located the lid, and the maximum diameter of going up the cock body is greater than limit flange's minimum diameter.

A third aspect, the utility model also provides a vacuum blood collection tube, it includes above-mentioned tube cap, and the upper end of blood collection tube is the mouth of pipe, orificial diameter is greater than the minimum diameter of rubber buffer just is less than the maximum diameter of rubber buffer.

The utility model provides a main beneficial effect of above-mentioned vacuum test tube's rubber buffer, tube cap and test tube lies in:

the utility model provides a rubber buffer, through setting up the perforating hole, at the in-process of extracting the rubber buffer from the heparin tube, the upper end of perforating hole at first with the outside air contact, and the lower extreme still seals in the heparin tube, because the perforating hole diameter is less, can play the effect of remaining negative pressure in inside and outside atmospheric pressure of intercommunication, the slow release pipe, can avoid the air to gush into fast again, lead to a large amount of air to get into, the gassing.

The utility model provides a tube cap is through setting up limiting flange, is fixed in the tube cap with the rubber buffer to just can extract the rubber buffer through extracting the tube cap, avoid with rubber buffer direct contact, cause the pollution.

The utility model provides a blood sampling tube, through setting up the mouth of pipe, can guarantee to cooperate with the rubber buffer, can guarantee again when extracting the upper end that the rubber buffer made the perforating hole and expose, guarantee with the lower plug body be connected, avoid blood sampling tube and rubber buffer to break away from, make the air directly gush into in the blood sampling tube, the gassing.

Drawings

Fig. 1 is a schematic structural view of the rubber stopper provided by the scheme.

Fig. 2 is a schematic structural diagram of the tube cover provided by the scheme.

Fig. 3 is a schematic structural view of the blood collection tube according to the present embodiment.

Wherein, 1, rubber buffer, 11, go up the cock body, 12, disengagement section, 13, central authorities groove, 14, butt section, 15, lower cock body, 16, buckle groove, 17, perforating hole, 2, tube cap, 21, upper cover body, 22, spacing flange, 23, lower cover body, 3, heparin tube, 31, mouth of pipe.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in figure 1, it is a vacuum vessel rubber stopper structure diagram.

The utility model discloses a vacuum blood sampling tube's rubber buffer 1 includes upper plug body 11 and lower plug body 15, and the diameter of upper plug body 11 is greater than lower plug body 15 to when upper plug body 11 and heparin tube 3 looks butt, lower plug body 15 is plugged in heparin tube 3, thereby guarantees sealed effect; the side wall of the lower plug body 15 is provided with a plurality of through holes 17, the upper end and the lower end of each through hole 17 are both positioned on the side wall of the lower plug body 15, and the distances from the two ends to the upper plug body 11 are different.

Specifically, the upper and lower ends of the through hole 17 are located in the same vertical plane. The upper end of perforating hole 17 is located stopper body 15 lateral wall upper portion down, and the lower extreme of perforating hole 17 is located stopper body 15 lateral wall bottom and bottom surface crossing position department down to the in-process that makes to pull out rubber buffer 1, perforating hole 17 upper end at first with outside air contact, the lower extreme just contacts with the air when rubber buffer 1 is pulled out completely, with the intercommunication that extension perforating hole 17 can play and the effect of balanced heparin tube inside and outside air pressure. The cross section of the through hole 17 is arc-shaped to improve the smoothness of air circulation.

Preferably, four through holes 17 are arranged and uniformly distributed on the side wall of the lower plug body 15, so as to ensure the balance of air flow when the through holes 17 exchange with the inside air and the outside air during the process of pulling out the rubber plug 1.

The crossing position of the upper end of the lower plug body 15 and the upper plug body 11 is provided with a buckling groove 16. Through setting up buckle groove 16, can with the mouth of pipe 31 joint of heparin tube 3 to the relative position of fixed heparin tube 3 and rubber buffer 1.

The lower plug body 15 is in a circular truncated cone-shaped structure, and the diameter of one end, close to the upper plug body 11, of the lower plug body 15 is larger than that of one end, deviating from the upper plug body 11, of the lower plug body 15. Preferably, the diameter of the end of lower plug 15 adjacent to upper plug 11 is larger than the diameter of nozzle 31 of blood collection tube 3, so that rubber plug 1 has elasticity, thereby ensuring sealing effect by its expansion characteristic.

Go up the upper end of cock body 11 and seted up central groove 13, the lower part of going up cock body 11 is butt section 14, and butt section 14 is cylindrical, and the upper portion of going up cock body 11 is disengagement section 12, and disengagement section 12 is the round platform shape. The abutting section 14 is arranged to abut against the tube cap 2, and the separating section 12 and the central groove 13 are arranged to enhance the deformation range of the upper part of the upper plug body 11, so that the rubber plug 1 can be easily pulled out of the tube cap 2.

Optionally, the diameter of the through hole 1 is 1mm, and the distance between the upper end of the through hole 17 and the fastening groove 16 is at least 3mm, so as to ensure that the through hole 1 does not suck a large amount of air rapidly to generate bubbles.

Through the fixed vacuum blood collection tube 3 of rubber buffer 1 that this scheme provided, when extracting rubber buffer 1, utilize perforating hole 17's intercommunication effect, can gush into blood collection tube 3 and produce the bubble with a large amount of air that leads to by direct separation between current rubber buffer 1 and blood collection tube 3, become to balance the inside and outside air pressure of blood collection tube 3 gradually through perforating hole 17 to prevent the production of bubble, guarantee the accuracy that blood sample project detected.

This scheme still provides a tube cap 2, as shown in fig. 2, it includes above-mentioned rubber buffer 1, and tube cap 2 includes lid 21 and lower lid 23, goes up and is provided with spacing flange 22 between lid 21 and the lower lid 22, and the last cock body 11 of rubber buffer 1 is located last lid 21, and the maximum diameter of going up cock body 11 is greater than the minimum diameter of spacing flange 22.

Preferably, the slope of the side of the position-defining flange 22 adjacent to the lower cap 22 with respect to the vertical plane is smaller than that of the side adjacent to the upper cap 21, so that the rubber stopper 1 can be effectively prevented from slipping out of the cap 2.

Optionally, the tube cover 2 is plastic to save costs.

Tube cap 2 that provides through this scheme is fixed in tube cap 2 with rubber buffer 1 to just can extract rubber buffer 1 through extracting tube cap 2, avoid with 2 direct contact of rubber buffer, pollute rubber buffer 1, and then pollute the sample in the heparin tube 3.

This scheme still provides a blood sampling tube 3, as shown in fig. 3, it includes above-mentioned tube cap 2, and the upper end of blood sampling tube 3 is mouth of pipe 31, and mouth of pipe 31's diameter is greater than rubber buffer 1's minimum diameter and is less than rubber buffer 1's maximum diameter to rubber buffer 1 cooperates and connects.

Specifically, the diameter of the tube opening 31 is smaller than the diameter of the middle part of the lower plug body 15 and larger than the minimum inner diameter formed by the clamping groove 16, so that the rubber plug 1 is kept fixedly connected.

The use method of the device provided by the scheme is as follows:

s1, the upper part of the lower plug 15 is pulled out and stays for 3 seconds, at this time, the upper end of the through hole 17 is in contact with the atmosphere, the lower end of the through hole 17 remains closed in the tube, and the gas inside and outside the tube is communicated through the through hole 17. The purposes of communicating the internal air pressure and the external air pressure and slowly releasing residual negative pressure in the tube are achieved.

Because the pressure of the air in the tube of the vacuum blood collection tube 3 is lower than that of the air outside the tube, the air outside the tube enters the tube through the through hole 1 under the action of pressure difference, the effect of balancing the air pressure inside and outside the tube is achieved, and the air pressure inside and outside the tube can be dynamically balanced in the subsequent cap pulling process. Because the lower extreme of perforating hole 17 is towards the lateral wall of heparin tube 3, the gas of admission pipe blows to the pipe wall and does not directly blow to plasma (clear) liquid level, and the gas of admission pipe gets into by a plurality of perforating holes 17 simultaneously, can disperse the impact force that the gas got into the intraductal, prevents that plasma (clear) liquid level from producing the bubble because of gas impact, billowing.

S2, the rubber stopper 1 was slowly and completely pulled out. At this time, the air pressure inside and outside the tube is balanced, and no air bubble is generated when the rubber plug 1 is pulled out.

The foregoing description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and those skilled in the art will be able to understand the present invention as long as various changes are made within the spirit and scope of the present invention as defined and defined by the appended claims, and all such changes are obvious and contemplated by the present invention.

Claims

1. A rubber stopper of a vacuum blood collection tube is characterized by comprising an upper stopper body and a lower stopper body, wherein the diameter of the upper stopper body is larger than that of the lower stopper body, a plurality of through holes are formed in the side wall of the lower stopper body, the upper end and the lower end of each through hole are both positioned on the side wall of the lower stopper body, and the distances from the two ends to the upper stopper body are different; the upper end and the lower end of the through hole are positioned in the same vertical plane; the upper end of the through hole is positioned at the upper part of the side wall of the lower plug body, and the lower end of the through hole is positioned at the intersection position of the bottom of the side wall of the lower plug body and the bottom surface.

2. The rubber stopper of vacuum blood collection tube according to claim 1, wherein the through hole has an arc-shaped cross section.

3. The rubber stopper of evacuated blood collection tube according to claim 2, wherein four through holes are provided and are uniformly distributed on the sidewall of the lower stopper.

4. The rubber stopper of vacuum blood collection tube according to claim 1, wherein a snap groove is provided at the intersection of the upper end of the lower stopper body and the upper stopper body.

5. The rubber stopper of vacuum blood collection tube of claim 1, wherein the lower stopper body has a truncated cone-shaped structure, and the diameter of the end of the lower stopper body adjacent to the upper stopper body is larger than the diameter of the end of the lower stopper body deviating from the upper stopper body.

6. The rubber stopper of vacuum blood collection tube according to claim 1, wherein the upper end of the upper plug body is provided with a central groove, the lower part of the upper plug body is an abutting section, the abutting section is cylindrical, the upper part of the upper plug body is a separating section, and the separating section is in a cone shape.

7. The utility model provides a tube cap of evacuated blood collection tube, characterized in that includes the rubber buffer of any of claims 1 to 6, the tube cap includes upper cover body and lower lid, is provided with limit flange between upper cover body and the lower lid, the last cock body of rubber buffer is located the upper cover body, and the maximum diameter of going up the cock body is greater than limit flange's minimum diameter.

8. An evacuated blood collection tube comprising the tube cap of claim 7, wherein the upper end of the blood collection tube is a nozzle having a diameter larger than the minimum diameter of the lower plug body and smaller than the maximum diameter of the lower plug body.