CN109199406A - A kind of adjustable vacuum blood collection tube of negative pressure - Google Patents
A kind of adjustable vacuum blood collection tube of negative pressure Download PDFInfo
- Publication number
- CN109199406A CN109199406A CN201810766772.4A CN201810766772A CN109199406A CN 109199406 A CN109199406 A CN 109199406A CN 201810766772 A CN201810766772 A CN 201810766772A CN 109199406 A CN109199406 A CN 109199406A
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- Prior art keywords
- negative pressure
- blood collection
- tube body
- piston
- cavity
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150236—Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Investigating Or Analysing Biological Materials (AREA)
Abstract
The invention discloses a kind of adjustable vacuum blood collection tubes of negative pressure, comprising: the sealing-plug of tube body and closure at the nozzle of the tube body, the tube body have the negative pressure cavity being isolated from the outside and the pressure regulating cavity being in communication with the outside；Wherein, the vacuum blood collection tube further include: be sealingly disposed in the intracorporal piston of the pipe, the tube body is separated into the negative pressure cavity and pressure regulating cavity；The sliding attacker for connecting the piston, for driving the piston to slide along the inboard wall of tube body to the pressure regulation cavity direction, to increase the volume of negative pressure cavity.Medical staff of the present invention can increase negative pressure manually in blood collection procedure, guarantee blood drawing amount, easy to operate.
Description
Technical field
The present invention relates to the field of medical instrument technology more particularly to a kind of adjustable vacuum blood collection tubes of negative pressure.
Background technique
Existing vacuum blood collection tube includes tube body and sealing-plug, and tube body and sealing-plug form closed vacuum tube chamber.Vacuum
Heparin tube shelves the vacuum degree that can be reduced in vacuum tube chamber for a long time, so that negative pressure reduces in vacuum blood collection tube, causes to adopt
Collect the consequence of sufficient amount blood sample.
Existing processing mode mainly include the following types: 1, abandon negative pressure reduction vacuum blood collection tube；Which causes to provide
Source waste and the waste of blood sample, the acceptable degree of patient are poor；2, blood samples of patients sample is extracted by syringe, then again
It is injected to vacuum blood collection tube；Which is cumbersome, is easy to happen needle and stabs, and patient needs to carry out venipuncture again, can
Acceptance is poor.
Summary of the invention
The object of the invention is to provide a kind of adjustable vacuum of negative pressure to overcome the above-mentioned problems of the prior art
Heparin tube, medical staff can increase negative pressure manually in blood collection procedure, guarantee blood drawing amount, easy to operate.
In order to realize above-mentioned purpose of the invention, the following technical schemes are provided:
A kind of adjustable vacuum blood collection tube of negative pressure, comprising: the sealing-plug of tube body and closure at the nozzle of the tube body, institute
Stating tube body has the negative pressure cavity being isolated from the outside and the pressure regulating cavity being in communication with the outside；Wherein, the vacuum blood collection tube further include: close
Envelope is arranged in the intracorporal piston of the pipe, and the tube body is separated into the negative pressure cavity and pressure regulating cavity；Connect the piston
Attacker is slided, for driving the piston to slide along the inboard wall of tube body to the pressure regulation cavity direction, to increase negative pressure cavity
Volume.
Preferably, the tube wall of the tube body comprising the pressure regulating cavity opens up sliding slot, and the pressure regulating cavity is by the sliding slot and outside
Boundary's connection.
Preferably, the sliding attacker includes: the attacker portion for support finger pulp, is located at outside the tube body；Can along institute
The sliding part for stating sliding slot sliding, is connected between the attacker portion and piston 3；Wherein, the sliding part passes through the sliding slot
Connect the attacker portion.
Preferably, the sliding slot at least two and be symmetrical arranged, the attacker portion is correspondingly arranged with the sliding slot.
Preferably, the range of the piston sliding is more than or equal to the length of the sliding slot.
Preferably, the piston is arranged far from the nozzle of the tube body.
Preferably, the attacker portion has arc compatible with finger pulp for the surface of support finger pulp.
The beneficial effects of the present invention are embodied in following aspect:
1) when vacuum blood collection tube of the invention can find that negative pressure is inadequate in blood collection procedure, come immediately to attacker portion force
Piston is pulled, reduces intracavitary air pressure by way of increasing negative pressure cavity volume, to achieve the purpose that increase negative pressure, guarantees to take out
Blood volume is enough, simple to operate, and patient is also without any discomfort；
2) symmetrical attacker portion is arranged in vacuum blood collection tube of the invention, facilitates two fingers of medical staff while grasping
Make, uniform force application, piston is mobile smoothly, avoids clamping stagnation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the adjustable vacuum blood collection tube embodiment one of negative pressure of the present invention；
Fig. 2 and Fig. 3 is the usage state diagram of the adjustable vacuum blood collection tube embodiment one of negative pressure of the present invention；
Fig. 4 is A-A cross-sectional view shown in FIG. 1；
Fig. 5 is the cross-sectional view of the adjustable vacuum blood collection tube embodiment two of negative pressure of the present invention.
Description of symbols: 1- tube body；1a- sliding slot；11- negative pressure cavity；12- pressure regulating cavity；2- sealing-plug；3- piston；4- is sliding
Dynamic attacker；41- attacker portion；42- sliding part；421- slide bar；422- connecting rod.
Specific embodiment
When using the present invention, blood was collected, when negative pressure can not enough continue blood sampling, medical staff can immediately manually
Increase negative pressure, it is ensured that blood sampling volume is enough, easy to operate quick.
As shown in Figure 1, the present invention provides a kind of adjustable vacuum blood collection tube of negative pressure, medical staff can hand in blood collection procedure
It is dynamic to increase negative pressure comprising: tube body 1；Block the sealing-plug 2 at the nozzle of tube body 1；Far from nozzle and it is sealingly disposed in tube body
Piston 3 in 1；Connect the sliding attacker 4 of piston 3.
Wherein, it is in communication with the outside far from 1 lower part of tube body of nozzle, by the piston 3 that is sealingly disposed in tube body 1 by tube body
1 is separated into the negative pressure cavity 11 and pressure regulating cavity 12 for being located at 3 two sides of piston, and negative pressure cavity 11 is isolated from the outside, pressure regulating cavity 12 and outer
Boundary's connection；When sliding attacker 4 slides along 1 inner wall of tube body to 12 direction of pressure regulating cavity with piston 3, negative pressure cavity 11 can be increased
Volume makes the reduction of 11 air pressure inside of negative pressure cavity, to increase the negative pressure of negative pressure cavity 11, realizes the mesh for continuing blood sampling using negative pressure
's.
Specific structure and working principle of the invention are described in detail with reference to the accompanying drawings and examples.
Embodiment one
As shown in Figures 1 to 4, the negative pressure cavity 11 of the present embodiment is located at 3 top of piston, by piston 3,1 top of tube body and sealing
2 sealing of plug is formed.
Pressure regulating cavity 12 is located at 3 lower section of piston, is formed by piston 3,1 lower part of tube body.Specifically, as shown in Figure 1, forming pressure regulation
The tube wall of 1 lower part of tube body of chamber 12 opens up sliding slot 1a, and pressure regulating cavity 12 is in communication with the outside by sliding slot 1a.
In addition, 1a is slided sliding attacker 4 along the chute, and sliding slot 1a buckles sliding when sliding attacker 4 with the movement of piston 3
Hand 4 plays limition orientation.As shown in Figure 1, sliding attacker 4 includes: the attacker portion 41 for support finger pulp, it is located at tube body 1
Outside；Can along the chute 1a sliding sliding part 42.Wherein, sliding part 42 is connected between attacker portion 41 and piston 3；When attacker portion 41
When moving down under the pressure of finger pulp, driving sliding part 42,1a is slided along the chute, and is moved with piston 3 along 1 inner wall of tube body
It is dynamic.
Specifically, the sliding slot 1a of the present embodiment penetrates tube wall setting, in order to which sliding part 42 extend out to tube body out of tube body 1
1 outer connection buckle hand 41.When implementation, sliding slot 1a can be the elongated shape being arranged from top to bottom, with limit slippage portion 42 from upper and
Lower slider.
When piston 3 moves down, the interaction force between piston and tube wall is uniformly distributed, and piston 3 can be made to glide
The phenomenon that being easy, avoiding the occurrence of downslide process clamping stagnation.When applying uniform downward pulling force to piston 3, piston 3 and pipe can be made
Interaction force between wall is uniformly distributed.Therefore, as shown in figs. 1 and 4, the present embodiment is symmetrical arranged two sliding slot 1a, and right
Two attacker portions 41 should be set.When exerting a force simultaneously to two symmetrically arranged attacker portions 41,3 uniform force of piston glides and holds
Easily.
When it is implemented, finger pulp exerts a force for convenience, the surface in attacker portion 41 is designed to compatible with finger pulp recessed
Arc；And the shape that lower concave arc shape is high in intermediate low both ends, it can avoid finger pulp to two side slips, influence to exert a force.
It should be noted that the range that piston 3 slides is greater than the length equal to sliding slot 1a, to avoid on piston 3
Blood leakage is caused when entering sliding slot 1 in end face.
Wherein, the sliding part 42 of the present embodiment includes: slide bar 421, and both ends are stretched out outside tube body 1 via two sliding slot 1a to be divided
It Lian Jie not two attacker portions 41；The connecting rod 422 for connecting slide bar 421 and piston 3, sets between two parties between slide bar 421 and piston 3
It sets, in order to make even piston stress.When implementation, 3 upper end of piston can be avoided by the way that the length of connecting rod 422 is rationally arranged
Face enters sliding slot 1.
As shown in Figure 1, the present embodiment is normal in pressure regulating cavity 12 since pressure regulating cavity 12 is in communication with the outside before not taking a blood sample
Atmospheric pressure, under atmospheric pressure, the top that the upper surface of slide bar 421 is resisted against sliding slot 1a will not slide.Once adopting
Find that negative pressure is inadequate, can operate attacker portion 41, making slide bar 421,1a is moved down along the chute when blood.
When Fig. 2 and Fig. 3 is that negative pressure is inadequate in negative pressure cavity 11, slide bar 421 (piston 3) is moved down to increase the mistake of negative pressure
Journey schematic diagram.When blood sampling can not be continued by finding negative pressure not enough in blood collection procedure, two finger pulps are clasped attacker portion by medical staff
41 apply lower pressure, and with moving down for piston 3,11 inner volume of negative pressure cavity increases, and air pressure inside will become smaller, and blood is being pressed
It is flowed into negative pressure cavity 11 again under the action of difference, when meeting blood sampling volume, can stop moving down piston 3.It can be by being arranged in tube wall
The mode of scale judges whether blood sampling volume is enough.It is acquisition blood when slide bar 421 is moved to sliding slot 1a middle and lower sections as shown in Figure 2
Liquid schematic diagram；It is acquisition blood schematic diagram when slide bar 421 is moved to the sliding slot bottom 1a shown in Fig. 3.
Embodiment two
In blood collection procedure, if two finger orientations of the position in two attacker portions 41 and medical staff deviate it is more
When, such as when with two fingers forward, just need that finger is made smoothly to ride over two by rotating tubular body or adjustment direction
In attacker portion 41.
In order to allow medical staff's more convenient operation smoothly, as shown in figure 5, the present embodiment opens up four sliding slots on tube body 1
1a, and it is symmetrical two-by-two.It is preferred that being spaced 90 ° between two adjacent sliding slot 1a；And it is correspondingly arranged four attacker portions 41.
In use, according to the position in each pair of attacker portion 41, by finger support in a pair of of attacker portion 41 smoothly.
Remaining structure of the present embodiment is as in the first embodiment, repeat no more.
Although above-mentioned elaborate the present invention, however, the present invention is not limited thereto, those skilled in the art can
It is modified with principle according to the present invention, therefore, the various modifications that all principles according to the invention carry out all should be understood as
Fall into protection scope of the present invention.
Claims (7)
1. a kind of adjustable vacuum blood collection tube of negative pressure, comprising: the sealing-plug of tube body and closure at the nozzle of the tube body, it is special
Sign is that the tube body has the negative pressure cavity being isolated from the outside and the pressure regulating cavity being in communication with the outside；
Wherein, the vacuum blood collection tube further include:
It is sealingly disposed in the intracorporal piston of the pipe, the tube body is separated into the negative pressure cavity and pressure regulating cavity；
The sliding attacker for connecting the piston, for driving the piston sliding to the pressure regulation cavity direction along the inboard wall of tube body
It is dynamic, to increase the volume of negative pressure cavity.
2. the adjustable vacuum blood collection tube of negative pressure according to claim 1, which is characterized in that the tube body comprising the pressure regulating cavity
Tube wall open up sliding slot, the pressure regulating cavity is in communication with the outside by the sliding slot.
3. the adjustable vacuum blood collection tube of negative pressure according to claim 2, which is characterized in that the sliding attacker includes:
For the attacker portion of support finger pulp, it is located at outside the tube body；
The sliding part that can be slided along the sliding slot, is connected between the attacker portion and piston 3；
Wherein, the sliding part passes through the sliding slot and connects the attacker portion.
4. the adjustable vacuum blood collection tube of negative pressure according to claim 3, which is characterized in that the sliding slot at least two and right
Claim setting, the attacker portion is correspondingly arranged with the sliding slot.
5. the adjustable vacuum blood collection tube of negative pressure according to claim 4, which is characterized in that the maximum row of the piston sliding
Journey is more than or equal to the length of the sliding slot.
6. the adjustable vacuum blood collection tube of negative pressure according to claim 1, which is characterized in that the piston is far from the tube body
Nozzle setting.
7. the adjustable vacuum blood collection tube of negative pressure according to claim 3, which is characterized in that the attacker portion refers to for support
The surface of abdomen has arc compatible with finger pulp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810766772.4A CN109199406B (en) | 2018-07-13 | 2018-07-13 | Vacuum blood collection tube with adjustable negative pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810766772.4A CN109199406B (en) | 2018-07-13 | 2018-07-13 | Vacuum blood collection tube with adjustable negative pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109199406A true CN109199406A (en) | 2019-01-15 |
| CN109199406B CN109199406B (en) | 2021-03-16 |
Family
ID=64990466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810766772.4A Active CN109199406B (en) | 2018-07-13 | 2018-07-13 | Vacuum blood collection tube with adjustable negative pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109199406B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547809A (en) * | 2019-09-23 | 2019-12-10 | 江苏科华医疗器械科技有限公司 | Telescopic blood collection tube |
| CN113397542A (en) * | 2021-05-21 | 2021-09-17 | 郴州市第一人民医院 | Side-suction vertical type hemolysis-preventing vacuum blood collection tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5277198A (en) * | 1992-07-27 | 1994-01-11 | Ryder International Corporation | Blood sampling syringe |
| CN205586286U (en) * | 2016-03-24 | 2016-09-21 | 青岛市市立医院 | Heparin tube for hemodialysis |
| CN205729378U (en) * | 2015-12-30 | 2016-11-30 | 三峡大学妇女儿童临床医学院 | A kind of child takes a blood sample the quantitative blood-taking device of special negative pressure |
| CN206463001U (en) * | 2016-11-02 | 2017-09-05 | 四川大学华西医院 | Vacuum blood collection tube |
| CN206729899U (en) * | 2017-01-05 | 2017-12-12 | 江西富尔康实业集团有限公司 | A kind of disposal vacuum blood taking needle |
| CN107677431A (en) * | 2017-10-20 | 2018-02-09 | 无锡飞述科技有限公司 | A kind of blood testing sampling pipe and its method |
-
2018
- 2018-07-13 CN CN201810766772.4A patent/CN109199406B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5277198A (en) * | 1992-07-27 | 1994-01-11 | Ryder International Corporation | Blood sampling syringe |
| CN205729378U (en) * | 2015-12-30 | 2016-11-30 | 三峡大学妇女儿童临床医学院 | A kind of child takes a blood sample the quantitative blood-taking device of special negative pressure |
| CN205586286U (en) * | 2016-03-24 | 2016-09-21 | 青岛市市立医院 | Heparin tube for hemodialysis |
| CN206463001U (en) * | 2016-11-02 | 2017-09-05 | 四川大学华西医院 | Vacuum blood collection tube |
| CN206729899U (en) * | 2017-01-05 | 2017-12-12 | 江西富尔康实业集团有限公司 | A kind of disposal vacuum blood taking needle |
| CN107677431A (en) * | 2017-10-20 | 2018-02-09 | 无锡飞述科技有限公司 | A kind of blood testing sampling pipe and its method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547809A (en) * | 2019-09-23 | 2019-12-10 | 江苏科华医疗器械科技有限公司 | Telescopic blood collection tube |
| CN113397542A (en) * | 2021-05-21 | 2021-09-17 | 郴州市第一人民医院 | Side-suction vertical type hemolysis-preventing vacuum blood collection tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109199406B (en) | 2021-03-16 |
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