CN217186139U

CN217186139U - Blood sampling tube for central blood station

Info

Publication number: CN217186139U
Application number: CN202220081562.3U
Authority: CN
Inventors: 宋雪
Original assignee: Qingdao Blood Center
Current assignee: Qingdao Blood Center
Priority date: 2022-01-13
Filing date: 2022-01-13
Publication date: 2022-08-16
Anticipated expiration: 2032-01-13

Abstract

The utility model discloses a blood sampling tube of central blood station relates to blood sampling equipment technical field. The utility model discloses a top is open-ended pipe, the top inner wall structure of pipe has and is conical crown plate, the little one end of crown plate opening is down, the big one end inner wall of crown plate opening with the inner wall laminating of pipe, the open end surface thread bush of pipe is equipped with the sleeve pipe. The utility model discloses before gathering blood, the wrench movement sleeve pipe drives the piston and removes to the pipe open end, make the bottom of piston keep away from the crown plate, pierce the center of running through the recess with the blood taking needle along the centre of a circle of piston again and take a blood sample, after having gathered blood and take out from the blood taking needle, the wrench movement sleeve pipe drives the piston and is close to the crown plate, when the toper face of piston conflict crown plate, receive reducing of crown plate conical surface, the bottom of piston is close to and extrudees each other, thereby to seal with the pinhole of external intercommunication, thereby the holistic leakproofness of pipe has been improved, blood sample leakage has been avoided.

Description

Blood sampling tube for central blood station

Technical Field

The utility model relates to a blood sampling equipment technical field, concretely relates to central blood station heparin tube.

Background

The vacuum blood collection tube is a disposable negative pressure vacuum glass tube capable of realizing quantitative blood collection and needs to be matched with a venous blood collection needle for use, the principle of the vacuum blood collection tube is that a blood collection tube test tube with a head cover is pre-pumped into different vacuum degrees, venous blood is automatically and quantitatively collected by utilizing the negative pressure of the vacuum blood collection tube, and one end of the blood collection needle penetrates into a vein of a human body and then the other end of the blood collection tube is inserted into a rubber plug of the vacuum blood collection tube. Human venous blood is under the effect of the inside negative pressure of vacuum blood sampling pipe, in blood sampling pipe through the blood taking needle suction, current blood sampling pipe is after gathering good blood, after taking out from the blood taking needle, the needle hole that the blood taking needle pricked the plug and formed leads to the intraductal leakproofness of blood sampling relatively poor, leads to the sample of gathering to reveal easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an: for solving the problem in the above-mentioned background, the utility model provides a blood sampling tube of central blood station.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

the utility model provides a central blood station heparin tube, is the open-ended pipe including the top, the top inner wall of pipe is constructed and is conical crown plate, the little one end of crown plate opening is down, the big one end inner wall of crown plate opening with the inner wall laminating of pipe, the open end surface screw thread cover of pipe is equipped with the sleeve pipe, sheathed tube inner wall connection has and is the cylindrical piston, the bottom activity of piston is inserted and is established the laminating of the surface of just piston in the pipe the inner wall of pipe, the bottom of piston is seted up and is cross recess, the center of recess with the centre of a circle of piston is located same straight line.

Furthermore, the top of the piston is provided with a guide groove, and the circle center of the guide groove and the circle center of the piston are located on the same straight line.

Furthermore, the outer surface of the piston is provided with an annular sliding groove, an annular inserting plate is constructed on the inner wall of the top of the sleeve, and the annular inserting plate is slidably inserted into the annular sliding groove.

Further, the cross section of one end of the groove far away from the opening is smaller than that of the opening end of the groove.

Further, the outer surface of the sleeve is configured with anti-slip teeth.

The utility model has the advantages as follows:

1. before gathering blood, the wrench movement sleeve pipe drives the piston and removes to the guide tube open end, make the bottom of piston keep away from the ring plate, pierce the center that runs through the recess with the blood taking needle along the centre of a circle of piston again and take a blood sample, after gathering good blood and take out from the blood taking needle, the wrench movement sleeve pipe drives the piston and is close to the ring plate, when the conical surface of piston conflict ring plate, receive the reduction of ring plate conical surface, the bottom of piston is close to each other and extrudees, thereby the pinhole with external intercommunication is sealed, thereby the holistic leakproofness of pipe has been improved, blood sample leakage has been avoided.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an exploded perspective view of the present invention;

fig. 3 is a plan elevation view of the present invention;

fig. 4 is a sectional view taken along a line a-a of fig. 3 according to the present invention;

FIG. 5 is an enlarged view of the point B in FIG. 2 according to the present invention;

FIG. 6 is an enlarged view of the present invention at C in FIG. 4;

reference numerals: 1. a conduit; 2. a ring plate; 3. a sleeve; 4. a piston; 5. a groove; 6. a guide groove; 7. an annular chute; 8. an annular inserting plate; 9. and (4) anti-slip teeth.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

As shown in fig. 1, fig. 2, fig. 4 and fig. 5, a blood sampling tube for central blood station comprises a guide tube 1 with an open top, a conical ring plate 2 is constructed on the inner wall of the top of the guide tube 1, the end of the ring plate 2 with a small opening faces downwards, the inner wall of the end of the ring plate 2 with a large opening is attached to the inner wall of the guide tube 1, a sleeve 3 is sleeved on the outer surface of the open end of the guide tube 1 in a threaded manner, a cylindrical piston 4 is connected to the inner wall of the sleeve 3, the bottom end of the piston 4 is movably inserted into the guide tube 1, the outer surface of the piston 4 is attached to the inner wall of the guide tube 1, a cross-shaped groove 5 is formed in the bottom of the piston 4, the center of the groove 5 and the center of the piston 4 are located on the same straight line, preferably, the piston 4 is made of rubber material, and can deform when being subjected to external force, the groove 5 is used for dividing the bottom end of the piston 4 into four plug blocks connected with the upper end, before gathering blood, wrench movement sleeve pipe 3 drives piston 4 and removes to 1 open end of pipe, make piston 4's bottom keep away from ring plate 2, pierce the blood taking needle along piston 4's centre of a circle and run through the center of recess 5 and take a blood sample again, after having gathered blood and take out the blood taking needle, wrench movement sleeve pipe 3 drives four chock blocks of piston 4 and is close to ring plate 2, when four chock conflict ring plate 2's of piston 4 conical surface, receive the reduction of 2 conical surfaces of ring plate, four chock blocks of piston 4 are close to each other and extrude, thereby to seal with the pinhole of external intercommunication, thereby improved the holistic leakproofness of pipe 1, blood sample leakage has been avoided.

As shown in fig. 4, in some embodiments, the top of the piston 4 is provided with a guide groove 6, the center of the guide groove 6 and the center of the piston 4 are located on the same straight line, and the guide groove 6 is provided to facilitate medical personnel to accurately pierce a blood taking needle into the piston 4 and penetrate through the center of the groove 5, so that the needle hole can be more effectively closed after blood taking.

As shown in fig. 2 and 6, in some embodiments, an annular sliding groove 7 is formed in an outer surface of the piston 4, an annular inserting plate 8 is configured on an inner wall of the top of the sleeve 3, the annular inserting plate 8 is slidably inserted into the annular sliding groove 7, and through sliding fit between the annular inserting plate 8 and the annular sliding groove 7, when the sleeve 3 is twisted, the piston 4 cannot rotate, and the piston 4 can only vertically move along the conduit 1, so as to ensure that four plunger blocks of the piston 4 can be tightly extruded and attached, thereby more effectively sealing the needle hole.

As shown in fig. 4 and 5, in some embodiments, the cross section of one end of the groove 5 far away from the opening is smaller than that of the opening end of the groove 5, and by the cross section configuration of the groove 5, when four chock blocks are close to each other and press against each other, the abutting surfaces between two adjacent chock blocks are abutted more tightly, so that the sealing effect on the pinhole is better.

As shown in FIGS. 1 and 3, in some embodiments, the outer surface of the cannula 3 is configured with anti-slip teeth 9, the anti-slip teeth 9 being configured to facilitate twisting rotational movement of the cannula 3 by the medical practitioner.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a central blood station heparin tube, its characterized in that is open-ended pipe (1) including the top, the top inner wall of pipe (1) is constructed and is conical crown plate (2), the little one end down of crown plate (2) opening, the big one end inner wall of crown plate (2) opening with the inner wall laminating of pipe (1), the open end surface screw thread cover of pipe (1) is equipped with sleeve pipe (3), the inner wall of sleeve pipe (3) is connected with and is cylindrical piston (4), the bottom activity of piston (4) is inserted and is established just the surface laminating of piston (4) in pipe (1) the inner wall of pipe (1), be criss-cross recess (5) have been seted up to the bottom of piston (4), the center of recess (5) with the centre of a circle of piston (4) is located same straight line.

2. The blood collection tube for the central blood station according to claim 1, wherein a guide groove (6) is formed in the top of the piston (4), and the center of the guide groove (6) and the center of the piston (4) are located on the same straight line.

3. The blood collection tube for the central blood station according to claim 1, wherein an annular sliding groove (7) is formed in the outer surface of the piston (4), an annular insertion plate (8) is configured on the inner wall of the top of the sleeve (3), and the annular insertion plate (8) is slidably inserted into the annular sliding groove (7).

4. The blood collection tube of claim 1, wherein the cross section of the end of the groove (5) far away from the opening is smaller than the cross section of the opening end of the groove (5).

5. A central blood station cartridge according to claim 1, wherein the outer surface of the sleeve (3) is configured with anti-slip teeth (9).