CN213883229U - Splash-proof vacuum blood collection tube - Google Patents
Splash-proof vacuum blood collection tube Download PDFInfo
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- CN213883229U CN213883229U CN202022731796.1U CN202022731796U CN213883229U CN 213883229 U CN213883229 U CN 213883229U CN 202022731796 U CN202022731796 U CN 202022731796U CN 213883229 U CN213883229 U CN 213883229U
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Abstract
The utility model provides a splashproof vacuum test tube with function is prevented splashing by opening the stopper. The utility model provides a splashproof vacuum test tube, includes tube cap and vacuum tube body, and tube cap and vacuum tube body can dismantle the connection, the tube cap includes outer tube cap, interior tube cap and revolves the cap, is equipped with water conservancy diversion spare at the bottom of the outer tube cap, and the outer tube cap is equipped with the air flow way, and the air flow way bottom is equipped with the piece of ventilating that is used for controlling the inside intercommunication state and the separation state of air flow way and vacuum tube body, revolves the cap cover and locates on the outer tube cap and can rotate for the outer tube cap, revolves the cap inside wall and meets with the piece of ventilating. The utility model discloses a splashproof vacuum test tube, medical staff can realize the intraductal external pressure of vacuum blood sampling through the operation spiral cap when opening the stopper and handle, and the atmospheric pressure when avoiding opening the stopper pushes away the intraductal blood liquid level of vacuum blood sampling and causes the intraductal blood of vacuum blood sampling to splash the outside condition, reduces the blood specimen and stains and the risk of polluted environment, and the specially adapted is in the blood detection environment relevant with the epidemic situation.
Description
Technical Field
The utility model relates to a vacuum test tube, in particular to splashproof vacuum test tube.
Background
The vacuum blood collection tube for clinical application at present is a vacuum blood collection tube with negative pressure, and mainly comprises a blood collection tube body and a tube cap. Compared with the traditional blood sampling such as an injector and the like, the vacuum blood sampling tube is more convenient and safer because one person takes one needle and one towel and vacuum blood sampling avoids the phenomena of blood cross infection and blood pollution. At present, the vacuum blood collection tube has a wide application range in hospital clinical laboratory, and can be applied to the fields of biochemical projects of clinical laboratory, immune projects of clinical laboratory, ethanol content detection and the like.
In practical applications, the design of vacuum blood collection tubes also exposes some disadvantages. One of the significant problems is that, since the inside of the blood collection tube body storing blood is in a vacuum state of reduced pressure, the inside of the blood collection tube is in vacuum and the outside is at atmospheric pressure, and atmospheric pressure rapidly invades into the evacuated blood collection tube while the stopper is opened. Therefore, the blood liquid level in the blood sampling tube is pushed and pressed by the atmospheric pressure, the blood in the blood sampling tube splashes to the outside, the blood sample is easily polluted, the environment is polluted, particularly, the epidemic prevention protection of medical workers is extremely easily damaged in the blood detection environment related to epidemic situations, and the cross infection of the medical workers and high-risk people is caused.
At present, the unified understanding of hospital blood sampling infection risk factors and prevention and control measures at home and abroad is that when the operation that blood is possibly splashed is carried out, an operator needs to wear goggles and a mask so as to cut off a blood wave transmission path. However, such operation specifications only address the above problems, but not address the above problems, and even if the operator protects himself, the blood in the vacuum blood collection tube still splashes out to pollute the environment in the form of aerosol, which causes infection risk to other workers in the environment. Therefore, the research of preventing blood from splashing when the stopper of the vacuum blood collection tube is opened is fundamentally stopped, and the research direction is an important research direction of the medical appliance industry.
Ningbo state green forest medical instrument technical consultation limited company application number is 201210264614.1's utility model patent application, provides one kind and can supply medical staff under the prerequisite of plug not pulling out, only just can directly extract the blood sample from the vacuum blood sedimentation tube with ordinary syringe needle, guarantees medical staff's safe intubate formula splashproof vacuum blood sedimentation tube completely, solves the problem that the plug breaks away from the intraductal blood of test tube in the twinkling of an eye and outwards splashes.
Japanese Utility model IDS application No. 200810096731.5 provides a device and a method for removing a stopper of a vacuum blood collection tube, which can simply eliminate the internal blood splash and the like when the stopper of the vacuum blood collection tube is removed, and solve the problem of contamination.
The research attempts to solve the problem of blood splashing caused by the opening and the plugging of the vacuum blood collection tube in different schemes from different angles, and achieves certain progress, has certain effects, starts from external factors to attempt to solve the problem, and does not improve the structure of the vacuum blood collection tube to solve the problem.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a splashproof vacuum test tube with function is prevented splashing in opening stopper, solve the background art in the problem.
The utility model provides a technical scheme that its technical problem adopted is:
the utility model provides a splashproof vacuum test tube, includes tube cap and vacuum tube body, and tube cap and vacuum tube body can dismantle the connection, the tube cap includes outer tube cap, interior tube cap and revolves the cap, is equipped with water conservancy diversion spare at the bottom of the outer tube cap, and the outer tube cap is equipped with the air flow way, and the air flow way bottom is equipped with the piece of ventilating that is used for controlling the inside intercommunication state and the separation state of air flow way and vacuum tube body, revolves the cap cover and locates on the outer tube cap and can rotate for the outer tube cap, revolves the cap inside wall and meets with the piece of ventilating.
Preferably, the flow guide piece is a hollow cylindrical body, the end surface area of the top end of the hollow cylindrical body is larger than that of the bottom end of the hollow cylindrical body, the top end of the hollow cylindrical body is fixedly connected with the bottom of the outer pipe cap, and the height of the hollow cylindrical body is smaller than the distance from the necking piece to the bottom of the outer pipe cap.
Preferably, the surface of the flow guide piece is provided with a flow guide sheet which is in a spiral shape.
Preferably, the air flow channel comprises a vertical flow channel and a transverse flow channel which are communicated, the vertical flow channel is axially arranged in the outer pipe cap along the outer pipe cap, the transverse flow channel is radially arranged in the outer pipe cap along the outer pipe cap, one end of the transverse flow channel is communicated with the vertical flow channel, and the other end of the transverse flow channel is tangential to the inner side wall of the outer pipe cap.
Preferably, the vertical flow passages are distributed around the axis of the outer tube cap, and the horizontal flow passages are distributed around the axis of the outer tube cap in a clockwise direction or an anticlockwise direction.
Preferably, the ventilating piece comprises an elastic plugging body and a thorn-shaped body for puncturing the elastic plugging body, the elastic plugging body is arranged in the inner tube cap and used for plugging the bottom end of the air flow channel, the thorn-shaped body is arranged in the outer tube cap, the working end of the thorn-shaped body abuts against the elastic plugging body, and the non-working end of the thorn-shaped body is connected with the inner side wall of the screw cap.
Preferably, the inner side wall of the screw cap is provided with a plurality of lugs uniformly distributed along the inner side wall of the screw cap, a plurality of arc-shaped bulges opposite to the lugs are arranged at the joint of the outer side wall of the outer pipe cap and the inner side wall of the screw cap, and each lug is connected with one arc-shaped bulge.
Preferably, the vent comprises a vent hole and a movable flow passage, the vent hole is arranged in the inner pipe cap, the movable flow passage is arranged in the screw cap, and the movable flow passage is used for controlling the communication state and the blocking state of the air flow passage.
Preferably, the joint of the outer side wall of the outer pipe cap and the inner side wall of the screw cap is provided with a plurality of limiting blocks, the end face of one end of each limiting block is flush with the outer side wall surface of the outer pipe cap, and the end face of the other end of each limiting block is higher than the outer side wall surface of the outer pipe cap.
Preferably, a necking piece is arranged on the inner wall of the vacuum tube body, the inner diameter of the necking piece is larger than the outer diameter of the flow guide piece, and the necking piece is an annular body integrally formed with the vacuum tube body.
The utility model has the advantages that:
the utility model discloses a splashproof vacuum test tube, medical staff can realize the intraductal external pressure of vacuum blood sampling through the operation spiral cap when opening the stopper and handle, and the atmospheric pressure when avoiding opening the stopper pushes away the intraductal blood liquid level of vacuum blood sampling and causes the intraductal blood of vacuum blood sampling to splash the outside condition, reduces the blood specimen and stains and the risk of polluted environment, and the specially adapted is in the blood detection environment relevant with the epidemic situation.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic front view of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the air flow passage of the present invention;
fig. 3 is a schematic view of the structure of the convex block and the circular arc-shaped protrusion of the present invention;
fig. 4 is a schematic front view of embodiment 2 of the present invention;
fig. 5 is a schematic view of the internal structure of the outer tube cap and the inner tube cap according to embodiment 2 of the present invention.
In the figure: 1. the vacuum tube comprises a vacuum tube body, 2, an outer tube cap, 3, an inner tube cap, 4, a screw cap, 5, an air flow channel, 501, a vertical flow channel, 502, a transverse flow channel, 6, an elastic plugging body, 7, a thorn-shaped body, 8, a flow guide piece, 9, a convex block, 10, an arc-shaped bulge, 11, a necking piece, 12, a vent hole, 13, a movable flow channel, 14, a flow guide piece, 15, a protective cover, 16, a connecting piece, 17 and a limiting block.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings. It is to be understood that the practice of the present invention is not limited to the following examples, and that any modifications and/or changes in form made to the present invention are intended to fall within the scope of the present invention.
In the utility model, all parts and percentages are weight units, and the adopted equipment, raw materials and the like can be purchased from the market or commonly used in the field if not specified. The methods in the following examples are conventional in the art unless otherwise specified. The components or devices in the following examples are, unless otherwise specified, standard parts or parts known to those skilled in the art, the structure and principle of which are known to those skilled in the art through technical manuals or through routine experimentation.
Example 1:
an anti-splash vacuum blood collection tube as shown in fig. 1-3 comprises a tube cap and a vacuum tube body 1, wherein the tube cap and the vacuum tube body are detachably connected, and the tube cap comprises an outer tube cap 2, an inner tube cap 3 and a screw cap 4.
The outer tube cap is provided with an air flow channel 5, the air flow channel comprises a plurality of groups of vertical flow channels 501 and transverse flow channels 502 which are communicated, each vertical flow channel is uniformly distributed in the outer tube cap along the axial direction of the outer tube cap, each transverse flow channel is radially arranged in the outer tube cap along the radial direction of the outer tube cap, one end of each transverse flow channel is communicated with the vertical flow channel, and the other end of each transverse flow channel is tangential to the inner side wall of the outer tube cap. The vertical flow passages are distributed and arranged by taking the axis of the outer pipe cap as the center, and the horizontal flow passages are distributed and arranged in the clockwise direction by taking the axis of the outer pipe cap as the center. The purpose of the arrangement is that air enters the outer tube cap from the vertical flow channel and enters the vacuum tube body tangentially through the transverse flow channel, under the flow guiding effect of the flow guiding piece, the air forms a rotational flow taking the flow guiding piece as the center, and the rotational flow attenuates the kinetic energy of the air in the process of entering the vacuum tube body, so that the pushing and pressing of the air on the blood liquid level in the tube is reduced. It should be noted that, a plurality of transverse channels must be distributed and arranged in a clockwise or counterclockwise direction with the axis of the outer tube cap as the center, so as to ensure that the air flowing out of each transverse channel flows in the same direction and is collected to generate a rotational flow.
The bottom end of the air flow channel is provided with a ventilation piece used for controlling the communication state and the blocking state of the air flow channel and the interior of the vacuum tube body. The ventilating piece comprises an elastic plugging body 6 and a thorn-shaped body 7 for puncturing the elastic plugging body, the elastic plugging body is arranged in the inner pipe cap and used for plugging the bottom end of the air flow channel, the thorn-shaped body is arranged in the outer pipe cap, the working end of the thorn-shaped body is abutted against the elastic plugging body, and the non-working end of the thorn-shaped body is connected with the inner side wall of the screw cap. When the non-working end of the thorn-shaped body is stressed, the working end of the thorn-shaped body moves forwards to puncture the elastic plugging body, and the crevasse of the elastic plugging body keeps an air inlet state under the pressure difference of two sides until the pressure of two sides of the elastic plugging body is balanced.
The bottom of the outer tube cap is provided with a flow guide part 8 which is a hollow cylindrical body, the end surface area of the top end of the hollow cylindrical body is larger than that of the bottom end of the hollow cylindrical body, and the top end of the hollow cylindrical body is fixedly connected with the bottom of the outer tube cap. The structure of the flow guide piece not only enables gas to enter the vacuum tube body to form rotational flow, but also has the following function that the middle part of the flow guide piece is of a hollow structure, after the air enters the vacuum tube body, the air rapidly fills the space around the flow guide piece in a rotational flow state, the air pressure in the hollow structure of the flow guide piece is obviously smaller than the air pressure outside the flow guide piece, a part of air around the bottom of the flow guide piece becomes upward to move and enters the hollow structure of the flow guide piece, the kinetic energy of the air entering the vacuum tube body is further attenuated, and the pushing and pressing of the air on the blood liquid level in the tube is further reduced. In addition, the middle part of the flow guide part is of a hollow structure, so that the blood taking needle penetrates through the outer tube cap with smaller resistance to enter the vacuum tube body, and the blood taking operation is convenient.
The rotary cap is sleeved on the outer pipe cap and can rotate relative to the outer pipe cap, and the inner side wall of the rotary cap is connected with the ventilation piece. The inner side wall of the screw cap is provided with a plurality of convex blocks 9 uniformly distributed along the inner side wall of the screw cap, the joint of the outer side wall of the outer tube cap and the inner side wall of the screw cap is provided with a plurality of arc-shaped bulges 10 opposite to the convex blocks, and each convex block is connected with one arc-shaped bulge. The lug and circular-arc protruding cooperation play limiting displacement, only when the effect of exerting certain dynamics, revolve the cap and just can carry out single-way rotation for the outer tube cap to thereby make the lug oppress circular-arc protruding and make the thorn-shaped body advance and pierce through the elasticity shutoff body towards the elasticity shutoff body at rotatory in-process. This prevents on the one hand that the mistake from touching and makes the spiral cap rotate and open the breather and cause vacuum tube body to ventilate and become invalid, and on the other hand prevents to open to ventilate back spiral cap and back to the normal position and make splashproof vacuum blood sampling tube use with mixture.
The inner wall of the vacuum tube body is provided with a necking part 11, the inner diameter of the necking part is larger than the outer diameter of the flow guide part, the necking part is an annular body integrally formed with the vacuum tube body, and the height of a hollow cylindrical body serving as the flow guide part is smaller than the distance from the necking part to the bottom of the outer tube cap. The necking piece plays a role in further controlling the liquid level of blood in the tube, air enters the lower part in the vacuum tube body through a hole in the center of the necking piece after rotational flow movement and the flow diversion effect of the hollow structure of the flow guide piece, air pressure in the direction of the center of the liquid level of the blood is formed, the periphery of the liquid level of the blood is pushed up along the trend, but the periphery of the liquid level of the blood is blocked by the edge of the necking piece, and the blood can be blocked by the edge of the necking piece even though splashing is generated and falls back to the liquid level. In order to ensure the smooth flow of air, the height of the flow guide piece is less than the distance from the necking piece to the bottom of the outer pipe cap.
When the anti-splash vacuum blood collection tube is used, the screw cap is rotated to the limit position, so that air outside the outer tube cap enters the vacuum tube body through the air flow channel, the internal and external pressures of the anti-splash vacuum blood collection tube are pre-balanced, force is applied to separate the tube cap from the vacuum tube body, and plug opening is completed.
Example 2:
an anti-splash vacuum blood collection tube as shown in fig. 4-5 comprises a tube cap and a vacuum tube body 1, wherein the tube cap and the vacuum tube body are detachably connected, and the tube cap comprises an outer tube cap 2, an inner tube cap 3 and a screw cap 4.
The outer tube cap is provided with an air flow channel 5, the air flow channel comprises a plurality of groups of vertical flow channels 501 and transverse flow channels 502 which are communicated, each vertical flow channel is uniformly distributed in the outer tube cap along the axial direction of the outer tube cap, each transverse flow channel is radially arranged in the outer tube cap along the radial direction of the outer tube cap, one end of each transverse flow channel is communicated with the vertical flow channel, and the other end of each transverse flow channel is tangential to the inner side wall of the outer tube cap. The vertical flow passages are distributed and arranged by taking the axis of the outer pipe cap as the center, and the horizontal flow passages are distributed and arranged in the clockwise direction by taking the axis of the outer pipe cap as the center. The purpose of the arrangement is that air enters the outer tube cap from the vertical flow channel and enters the vacuum tube body tangentially through the transverse flow channel, under the flow guiding effect of the flow guiding piece, the air forms a rotational flow taking the flow guiding piece as the center, and the rotational flow attenuates the kinetic energy of the air in the process of entering the vacuum tube body, so that the pushing and pressing of the air on the blood liquid level in the tube is reduced. It should be noted that, a plurality of transverse channels must be distributed and arranged in a clockwise or counterclockwise direction with the axis of the outer tube cap as the center, so as to ensure that the air flowing out of each transverse channel flows in the same direction and is collected to generate a rotational flow.
The bottom end of the air flow channel is provided with a ventilation piece used for controlling the communication state and the blocking state of the air flow channel and the interior of the vacuum tube body. The ventilation piece comprises a ventilation opening 12 and a movable flow passage 13, the ventilation opening is arranged in the inner pipe cap, the movable flow passage is arranged in the screw cap, and the movable flow passage is used for controlling the communication state and the blocking state of the air flow passage. The number of the movable flow passages is the same as that of the air vents, when the vacuum tube is in a blocking state, the movable flow passages are not communicated with the air vents, and the air vents are blocked by the inner side walls of the screw caps, so that air outside the vacuum tube cannot enter the vacuum tube; when the vacuum tube is in a communicated state, the rotating cap rotates to the position, the moving flow channel in the rotating cap communicates the air flow channel with the air vent, and air enters the vacuum tube body.
The bottom of the outer tube cap is provided with a flow guide part 8 which is a hollow cylindrical body, the end surface area of the top end of the hollow cylindrical body is larger than that of the bottom end of the hollow cylindrical body, and the top end of the hollow cylindrical body is fixedly connected with the bottom of the outer tube cap. The structure of the flow guide piece not only enables gas to enter the vacuum tube body to form rotational flow, but also has the following function that the middle part of the flow guide piece is of a hollow structure, after the air enters the vacuum tube body, the air rapidly fills the space around the flow guide piece in a rotational flow state, the air pressure in the hollow structure of the flow guide piece is obviously smaller than the air pressure outside the flow guide piece, a part of air around the bottom of the flow guide piece becomes upward to move and enters the hollow structure of the flow guide piece, the kinetic energy of the air entering the vacuum tube body is further attenuated, and the pushing and pressing of the air on the blood liquid level in the tube is further reduced. In addition, the middle part of the flow guide part is of a hollow structure, so that the blood taking needle penetrates through the outer tube cap with smaller resistance to enter the vacuum tube body, and the blood taking operation is convenient. The surface of the flow guide part is provided with a flow guide sheet 14 which is in a spiral shape. The guide vanes can enhance the swirling effect of the air.
The rotary cap is sleeved on the outer pipe cap and can rotate relative to the outer pipe cap, and the inner side wall of the rotary cap is connected with the ventilation piece. The outer tube cap lateral wall is equipped with a plurality of stoppers 17 with the department that meets of cap inside wall soon, and stopper one end terminal surface flushes with outer tube cap outside wall, and stopper other end terminal surface is higher than outer tube cap outside wall. The stopper is used for restricting the position of cap soon for the outer tube cap, and only when applying the effect of certain dynamics, the cap soon can carry out unidirectional rotation for the outer tube cap, prevents on the one hand that the mistake from touching to make the cap soon rotate and open the piece of ventilating and cause the vacuum tube body to ventilate and become invalid, and on the other hand prevents to open and ventilate back cap soon normal position and makes splashproof vacuum blood collection tube use with mixture.
The inner wall of the vacuum tube body is provided with a necking part 11, the inner diameter of the necking part is larger than the outer diameter of the flow guide part, the necking part is an annular body integrally formed with the vacuum tube body, and the height of a hollow cylindrical body serving as the flow guide part is smaller than the distance from the necking part to the bottom of the outer tube cap. The necking piece plays a role in further controlling the liquid level of blood in the tube, air enters the lower part in the vacuum tube body through a hole in the center of the necking piece after rotational flow movement and the flow diversion effect of the hollow structure of the flow guide piece, air pressure in the direction of the center of the liquid level of the blood is formed, the periphery of the liquid level of the blood is pushed up along the trend, but the periphery of the liquid level of the blood is blocked by the edge of the necking piece, and the blood can be blocked by the edge of the necking piece even though splashing is generated and falls back to the liquid level. In order to ensure the smooth flow of air, the height of the flow guide piece is less than the distance from the necking piece to the bottom of the outer pipe cap.
In order to protect the smoothness of the vertical flow channel and prevent the top end of the vertical flow channel from entering ash, a protective cover 15 is further arranged at the top end of the outer tube cap and is connected with the top end of the outer tube cap through a plurality of spaced connecting pieces 16, so that air enters the vertical flow channel from the side part through a gap between the protective cover and the top end of the outer tube cap.
When the anti-splash vacuum blood collection tube is used, the screw cap is rotated to the limit position, so that air outside the outer tube cap enters the vacuum tube body through the air flow channel, the internal and external pressures of the anti-splash vacuum blood collection tube are pre-balanced, force is applied to separate the tube cap from the vacuum tube body, and plug opening is completed.
The above-described embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and other variations and modifications may be made without departing from the scope of the claims.
Claims (10)
1. The utility model provides a splashproof vacuum test tube, includes tube cap and vacuum tube body, and tube cap and vacuum tube body can dismantle the connection, its characterized in that: the pipe cap comprises an outer pipe cap, an inner pipe cap and a rotary cap, a flow guide part is arranged at the bottom of the outer pipe cap, an air flow channel is arranged on the outer pipe cap, an air breather used for controlling the communication state and the blocking state of the air flow channel and the interior of the vacuum pipe body is arranged at the bottom end of the air flow channel, the rotary cap is sleeved on the outer pipe cap and can rotate relative to the outer pipe cap, and the inner side wall of the rotary cap is connected with the air breather.
2. The splashproof vacuum test tube of claim 1, characterized in that: the flow guide piece is a hollow cylindrical body, the end surface area of the top end of the hollow cylindrical body is larger than that of the bottom end of the hollow cylindrical body, the top end of the hollow cylindrical body is fixedly connected with the bottom of the outer pipe cap, and the height of the hollow cylindrical body is smaller than the distance from the necking piece to the bottom of the outer pipe cap.
3. The splashproof vacuum test tube of claim 1 or 2, characterized in that: the surface of the flow guide piece is provided with a flow guide sheet which is in a spiral shape.
4. The splashproof vacuum test tube of claim 1, characterized in that: the air flow channel comprises a vertical flow channel and a transverse flow channel which are communicated, the vertical flow channel is axially arranged in the outer pipe cap along the outer pipe cap, the transverse flow channel is radially arranged in the outer pipe cap along the outer pipe cap, one end of the transverse flow channel is communicated with the vertical flow channel, and the other end of the transverse flow channel is tangential to the inner side wall of the outer pipe cap.
5. The splashproof vacuum test tube of claim 4, characterized in that: the vertical flow channel is distributed by taking the axis of the outer pipe cap as the center, and the horizontal flow channel is distributed by taking the axis of the outer pipe cap as the center in the clockwise direction or the anticlockwise direction.
6. The splashproof vacuum test tube of claim 1, characterized in that: the ventilating piece comprises an elastic plugging body and a thorn-shaped body used for puncturing the elastic plugging body, the elastic plugging body is arranged in the inner pipe cap and used for plugging the bottom end of the air flow channel, the thorn-shaped body is arranged in the outer pipe cap, the working end of the thorn-shaped body is abutted against the elastic plugging body, and the non-working end of the thorn-shaped body is connected with the inner side wall of the screw cap.
7. The splashproof vacuum test tube of claim 6, characterized in that: the inner side wall of the screw cap is provided with a plurality of convex blocks which are uniformly distributed along the inner side wall of the screw cap, the joint of the outer side wall of the outer tube cap and the inner side wall of the screw cap is provided with a plurality of arc-shaped bulges which are opposite to the convex blocks, and each convex block is connected with one arc-shaped bulge.
8. The splashproof vacuum test tube of claim 1, characterized in that: the ventilation piece comprises a ventilation opening and a movable flow passage, the ventilation opening is arranged in the inner pipe cap, the movable flow passage is arranged in the spiral cap, and the movable flow passage is used for controlling the communication state and the blocking state of the air flow passage.
9. The splashproof vacuum test tube of claim 8, characterized in that: the outer tube cap lateral wall is equipped with a plurality of stoppers with the department that meets of cap inside wall soon, and stopper one end terminal surface flushes with outer tube cap outside wall, and stopper other end terminal surface is higher than outer tube cap outside wall.
10. The splashproof vacuum test tube of claim 1, characterized in that: the inner wall of the vacuum tube body is provided with a necking piece, the inner diameter of the necking piece is larger than the outer diameter of the flow guide piece, and the necking piece is an annular body integrally formed with the vacuum tube body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022731796.1U CN213883229U (en) | 2020-11-23 | 2020-11-23 | Splash-proof vacuum blood collection tube |
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| CN202022731796.1U CN213883229U (en) | 2020-11-23 | 2020-11-23 | Splash-proof vacuum blood collection tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112274151A (en) * | 2020-11-23 | 2021-01-29 | 杭州市第一人民医院 | Splash-proof vacuum blood collection tube |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112274151A (en) * | 2020-11-23 | 2021-01-29 | 杭州市第一人民医院 | Splash-proof vacuum blood collection tube |
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