CN113274015A - Formula blood sampling liquid-transfering device floats - Google Patents

Abstract

The invention discloses a floating adjustment type blood sampling and pipetting device, which comprises an adjusting mechanism; the structure of the traditional tube body is changed, the ventilation cover is driven to rotate through the rotation of the driving rod, the ventilation cover drives the external connecting sleeve to rotate, the external connecting sleeve drives the internal thread driving ring to rotate, the internal thread driving ring drives the external thread floating ring column to float up and down, so that the blood sampling tube is driven to move up and down in the bottom connecting tube, in addition, when liquid reaches the top of the blood sampling tube, redundant liquid can be discharged downwards from an annular overflow channel between the internal thread driving ring and the external connecting sleeve, and the accurate volume of the sucked liquid is ensured.

Description

Formula blood sampling liquid-transfering device floats

Technical Field

The invention relates to a floating adjustment type blood sampling and pipetting device.

Background

At present, the existing floating adjustment type blood sampling and pipetting device is a common tool used when medical departments such as hospitals analyze blood, and the structure generally comprises a top air bag, a lower connecting pipe and a blood sampling pipe, wherein the lower connecting pipe is installed at the lower end of the top air bag, then the blood sampling pipe is installed in the lower connecting pipe, the lower end of the blood sampling pipe extends to the outside of the lower end of the lower connecting pipe, a ventilation opening is arranged at one side of the lower end of the blood sampling pipe, the blood is contacted with the blood to be collected through the lower end of the blood sampling pipe, the blood automatically enters the lower end of the blood sampling pipe through capillary effect and reaches the ventilation opening to stop suction, blood sampling is realized, then the collected blood is squeezed into diluent through the air bag, then the diluent is sucked from the lower end of the blood sampling pipe and is filled in the whole blood sampling pipe through squeezing and loosening of the air bag, the suction of the diluent is realized, the air bag is squeezed again to realize the pipetting of the diluent, but the floating adjustment type blood sampling and pipetting device with the structure, its heparin tube is generally fixed connection inside the connecting tube down, so can not adjust the length of gathering according to actual container, and the lower extreme of heparin tube is exposed outside connecting tube lower extreme under in general, makes the lower extreme of heparin tube receive the damage easily moreover.

Disclosure of Invention

Aiming at the defects of the prior art, the invention solves the problems that: provides a floating adjustment type blood sampling and liquid transferring device capable of telescopically adjusting and protecting the lower end of a blood sampling tube.

In order to solve the problems, the technical scheme adopted by the invention is as follows:

a floating adjustment type blood sampling and liquid transferring device comprises a top air bag, an upper connecting pipe, a middle connecting pipe, a bottom connecting pipe, a blood sampling pipe and an adjusting mechanism; the lower end of the top airbag is connected with an upper connecting pipe; the lower end of the upper connecting pipe is connected with a middle connecting pipe; the lower end of the middle connecting pipe is connected with a bottom connecting pipe; a blood collection tube is vertically and slidably clamped and mounted in the bottom connecting tube; a backflow annular cavity is arranged between the outer side of the periphery of the blood collection tube and the inner wall of the periphery of the bottom connecting tube; the upper end of the blood collection tube extends into the middle connecting tube; the adjusting mechanism comprises a driving rod, a ventilation cover, an external connecting sleeve, a fixed rod, an internal thread driving ring and an external thread floating ring column; the driving rod is inserted from the middle of the upper end of the top airbag, the lower end of the driving rod penetrates through the top airbag and extends into the upper connecting pipe, the lower end of the driving rod is rotatably clamped and mounted around the inner part of the upper connecting pipe, and the upper end of the driving rod is positioned outside the upper end of the top airbag; the bottom of the driving rod is provided with a ventilation cover; the ventilation cover is of an annular cylinder structure, and vent holes are uniformly formed in the periphery of the ventilation cover; an external connecting sleeve is arranged below the ventilation cover; the longitudinal section of the external connecting sleeve is of an inverted U-shaped structure; the lower end of the ventilation cover is inserted into and fixed above the inner part of the external connecting sleeve from the middle of the upper end of the external connecting sleeve; the external connecting sleeve is positioned in the middle connecting pipe; an internal thread driving ring is arranged in the middle of the inside of the external connecting sleeve; the two outer sides of the internal thread driving ring are respectively and fixedly connected to the inner walls of the two sides of the external connecting sleeve through fixing rods; the outer sides of the periphery of the upper end of the blood collection tube are provided with external thread floating ring columns; the external thread floating ring column is in threaded rotary connection with the periphery of the inner side of the internal thread driving ring; an annular overflow channel is arranged between the external thread floating ring column and the external connecting sleeve; the longitudinal length of the external thread floating ring column is larger than that of the internal thread driving ring.

Furthermore, the outer side all around of the lower extreme of external screw thread floating collar post is equipped with spacing ring body.

Furthermore, annular clamping grooves are formed in the periphery of the inner part of the upper connecting pipe; two sides of the lower end of the driving rod are respectively provided with a rotary clamping and connecting rod; the driving rod is rotationally clamped on the annular clamping grooves on the periphery inside the upper connecting pipe through the rotary clamping connecting rods on the two sides of the lower end.

Furthermore, a vent pipe communicated with the blood collection pipe is arranged on one side below the blood collection pipe.

Furthermore, a sliding clamping groove is formed in one side inside the lower connecting pipe; the sliding clamping groove extends to the upper part of the inner part of the bottom connecting pipe from the lower end surface of the inner part of the bottom connecting pipe; a sliding clamping and connecting rod is arranged on one side of the outer part of the blood collection tube; the blood sampling tube is inserted from the lower end of the bottom connecting tube through the sliding clamping rod and is clamped on the sliding clamping groove on one side inside the lower connecting tube in a vertically sliding manner.

Further, a sealing assembly is also included; the sealing assembly comprises a connecting ring and a sealing rubber ring body; an opening is formed in the middle of the upper end of the top airbag; connecting rings are arranged around the opening; a sealing rubber ring body is arranged on the outer side of the periphery of the driving rod; the driving rod is connected to the inner side of the periphery of the connecting ring in a rotating and sealing mode through the sealing rubber ring body on the outer side of the periphery.

Furthermore, the upper connecting pipe, the middle connecting pipe and the bottom connecting pipe are all made of plastics.

Furthermore, a polytetrafluoroethylene coating is arranged in an annular clamping groove on the periphery inside the upper connecting pipe.

The invention has the advantages of

The structure of the traditional tube body is changed, the ventilation cover is driven to rotate through the rotation of the driving rod, the ventilation cover drives the external connecting sleeve to rotate, the external connecting sleeve drives the internal thread driving ring to rotate, the internal thread driving ring drives the external thread floating ring column to float up and down, and thus the blood collection tube is driven to move up and down in the bottom connecting tube, so that the lower end of the blood collection tube can be upwards arranged in the bottom connecting tube to be protected, or downwards extends out of the bottom connecting tube to collect blood, and meanwhile, the distance that the lower end of the blood collection tube downwards extends out of the bottom connecting tube can be adjusted, so that the device can be flexibly adjusted according to the depths of different containers, and the convenience of liquid collection is improved.

The top air bag is extruded after blood collection is finished, partial air flow enters the external connecting sleeve from the ventilation cover through the upper connecting pipe and is finally discharged from the lower end of the blood collection tube, when the top air bag is loosened, liquid is sucked upwards from the bottom of the blood collection tube, when the liquid reaches the top of the blood collection tube, redundant liquid is discharged downwards from an annular overflow channel between the external thread floating ring column and the external connecting sleeve and is discharged from a backflow annular cavity between the bottom connecting pipe and the blood collection tube, and the accurate volume of the collected liquid is ensured.

The blood sampling tube is convenient to disassemble, the external thread floating ring column moves downwards and is separated from the internal thread driving ring through the rotation of the driving rod, so that the blood sampling tube slides downwards and is separated from the sliding clamping groove of the bottom connecting tube through the sliding clamping rod, and the external thread floating ring column and the blood sampling tube are disassembled from the bottom connecting tube, and the blood sampling tube is convenient to clean and replace.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic view of the adjusting mechanism of the present invention.

Fig. 3 is a partially enlarged structural view of fig. 2 according to the present invention.

FIG. 4 is an enlarged schematic view of the blood collection tube and the bottom connection tube of the present invention.

Fig. 5 is an enlarged schematic view of the seal assembly of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, a floating adjustment type blood sampling and pipetting device comprises a top airbag 1, an upper connecting tube 2, a middle connecting tube 3, a bottom connecting tube 4, a blood sampling tube 5 and an adjusting mechanism 6; the lower end of the top airbag 1 is connected with an upper connecting pipe 2; the lower end of the upper connecting pipe 2 is connected with a middle connecting pipe 3; the lower end of the middle connecting pipe 3 is connected with a bottom connecting pipe 4; a blood collection tube 5 is vertically slidably clamped and mounted in the bottom connecting tube 4; a backflow annular cavity 42 is arranged between the outer side of the periphery of the blood collection tube 5 and the inner wall of the periphery of the bottom connecting tube 4; the upper end of the blood collection tube 5 extends into the middle connecting tube 3; the adjusting mechanism 6 comprises a driving rod 61, a ventilation cover 62, an external connecting sleeve 63, a fixing rod 66, an internal thread driving ring 65 and an external thread floating ring column 64; the driving rod 61 is inserted from the middle of the upper end of the top airbag 1, the lower end of the driving rod 61 penetrates through the top airbag 1 and extends into the upper connecting pipe 2, the lower end of the driving rod 61 is rotatably clamped and mounted on the periphery of the inner part of the upper connecting pipe 2, and the upper end of the driving rod 61 is positioned outside the upper end of the top airbag 1; a ventilation cover 62 is arranged at the bottom of the driving rod 61; the ventilation cover 62 is in an annular column structure, and vent holes are uniformly formed in the periphery of the ventilation cover 62; an external connecting sleeve 63 is arranged below the ventilation cover 62; the longitudinal section of the external connecting sleeve 63 is of an inverted U-shaped structure; the lower end of the ventilation cover 62 is inserted into and fixed above the inner part of the outer connecting sleeve 63 from the middle of the upper end of the outer connecting sleeve 63; the external connecting sleeve 63 is positioned in the middle connecting pipe 3; an internal thread driving ring 65 is arranged in the middle of the inner part of the external connecting sleeve 63; the two outer sides of the internal thread driving ring 65 are fixedly connected to the inner walls of the two sides of the outer connecting sleeve 63 through fixing rods 66 respectively; an external thread floating ring column 64 is arranged on the outer side of the periphery of the upper end of the blood collection tube 5; the external thread floating ring column 64 is in threaded rotary connection with the periphery of the inner side of the internal thread driving ring 65; an annular overflow channel 631 is arranged between the external thread floating ring column 64 and the external connecting sleeve 63; the longitudinal length of the externally threaded floating collar post 64 is greater than the longitudinal length of the internally threaded drive collar 65.

As shown in fig. 1 to 5, further, a limiting ring body 641 is disposed on the outer side of the periphery of the lower end of the external floating ring column 64. Preferably, the periphery of the inside of the upper connecting pipe 2 is provided with an annular clamping groove 21; two sides of the lower end of the driving rod 61 are respectively provided with a rotary clamping rod 611; the driving rod 61 is rotatably fastened to the annular fastening groove 21 formed around the inside of the upper connection pipe 2 by the rotary fastening rods 611 at both sides of the lower end. More preferably, a vent tube 51 communicating with the blood collection tube 5 is provided on the lower side thereof. Further, a sliding clamping groove 41 is formed in one side inside the lower connecting pipe 4; the sliding clamping groove 41 extends from the lower end surface of the inner part of the bottom connecting pipe 4 to the upper part of the inner part of the bottom connecting pipe 4; a sliding clamping and connecting rod 52 is arranged on one side of the outer part of the blood collection tube 5; the blood collection tube 5 is inserted from the lower end of the bottom connection tube 4 through a slide clamping rod 52 and is vertically slidably clamped in the slide clamping groove 41 on one side inside the lower connection tube 4. Further, a sealing assembly 7 is also included; the sealing assembly 7 comprises a connecting ring 71 and a sealing rubber ring body 72; an opening 11 is formed in the middle of the upper end of the top airbag 1; a connecting ring 71 is arranged around the opening 11; a sealing rubber ring body 72 is arranged on the outer side of the periphery of the driving rod 61; the driving rod 61 is rotatably and hermetically connected to the inner side of the periphery of the connecting ring 71 through a sealing rubber ring body 72 on the outer side of the periphery. Preferably, the upper connecting pipe 2, the middle connecting pipe 3 and the bottom connecting pipe 4 are made of plastic. Preferably, a polytetrafluoroethylene coating is disposed in the annular clamping groove 21 around the inside of the upper connecting pipe 2.

The structure of the traditional tube body is changed, the ventilation cover 62 is driven to rotate by the rotation of the driving rod 61, the ventilation cover 62 drives the external connecting sleeve 63 to rotate, the external connecting sleeve 63 drives the internal thread driving ring 65 to rotate, the internal thread driving ring 65 drives the external thread floating ring column 64 to float up and down, so that the blood sampling tube 5 is driven to move up and down in the bottom connecting tube 4, the lower end of the blood sampling tube 5 can be upwards arranged in the bottom connecting tube 4 to realize protection, or downwards extends out of the lower part of the bottom connecting tube 4 to perform blood sampling, meanwhile, the distance that the lower end of the blood sampling tube 4 downwards extends out of the lower part of the bottom connecting tube 4 can be adjusted, so that the device can be flexibly adjusted according to the depths of different containers, and the convenience of liquid collection is improved.

The invention squeezes the top air bag 1 after the blood collection is finished, part of air flow passes through the upper connecting tube 2, enters the outer connecting sleeve 63 from the ventilation hood 62, and is finally discharged from the lower end of the blood collection tube 5, when the top air bag 1 is loosened, liquid is sucked upwards from the bottom of the blood collection tube 42, when the liquid reaches the top of the blood collection tube 42, redundant liquid can be discharged downwards from an annular overflow channel 631 between the external thread floating ring column 64 and the outer connecting sleeve 63 and is discharged from a backflow annular cavity 42 between the bottom connecting tube 4 and the blood collection tube 5, and the volume accuracy of the collected liquid is ensured.

The blood sampling tube 5 of the invention is convenient to detach, the external thread floating ring column 64 moves downwards and is separated from the internal thread driving ring 65 by the rotation of the driving rod 61, so that the blood sampling tube 5 slides downwards and is separated from the sliding clamping groove 41 of the bottom connecting tube 4 by the sliding clamping rod 52, and the external thread floating ring column 64 and the blood sampling tube 5 are detached from the bottom connecting tube 4, thus being convenient to clean and replace.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (8)

1. A floating adjustment type blood sampling and liquid transferring device is characterized by comprising a top air bag, an upper connecting pipe, a middle connecting pipe, a bottom connecting pipe, a blood sampling pipe and an adjusting mechanism; the lower end of the top airbag is connected with an upper connecting pipe; the lower end of the upper connecting pipe is connected with a middle connecting pipe; the lower end of the middle connecting pipe is connected with a bottom connecting pipe; a blood collection tube is vertically and slidably clamped and mounted in the bottom connecting tube; a backflow annular cavity is arranged between the outer side of the periphery of the blood collection tube and the inner wall of the periphery of the bottom connecting tube; the upper end of the blood collection tube extends into the middle connecting tube; the adjusting mechanism comprises a driving rod, a ventilation cover, an external connecting sleeve, a fixed rod, an internal thread driving ring and an external thread floating ring column; the driving rod is inserted from the middle of the upper end of the top airbag, the lower end of the driving rod penetrates through the top airbag and extends into the upper connecting pipe, the lower end of the driving rod is rotatably clamped and mounted around the inner part of the upper connecting pipe, and the upper end of the driving rod is positioned outside the upper end of the top airbag; the bottom of the driving rod is provided with a ventilation cover; the ventilation cover is of an annular cylinder structure, and vent holes are uniformly formed in the periphery of the ventilation cover; an external connecting sleeve is arranged below the ventilation cover; the longitudinal section of the external connecting sleeve is of an inverted U-shaped structure; the lower end of the ventilation cover is inserted into and fixed above the inner part of the external connecting sleeve from the middle of the upper end of the external connecting sleeve; the external connecting sleeve is positioned in the middle connecting pipe; an internal thread driving ring is arranged in the middle of the inside of the external connecting sleeve; the two outer sides of the internal thread driving ring are respectively and fixedly connected to the inner walls of the two sides of the external connecting sleeve through fixing rods; the outer sides of the periphery of the upper end of the blood collection tube are provided with external thread floating ring columns; the external thread floating ring column is in threaded rotary connection with the periphery of the inner side of the internal thread driving ring; an annular overflow channel is arranged between the external thread floating ring column and the external connecting sleeve; the longitudinal length of the external thread floating ring column is larger than that of the internal thread driving ring.

2. The floating adjustment type blood sampling and pipetting device according to claim 1, wherein a limiting ring body is arranged on the outer side of the periphery of the lower end of the external thread floating ring column.

3. The floating adjustment type blood sampling and pipetting device according to claim 1, wherein the upper connecting tube is provided with an annular clamping groove around the inside; two sides of the lower end of the driving rod are respectively provided with a rotary clamping and connecting rod; the driving rod is rotationally clamped on the annular clamping grooves on the periphery inside the upper connecting pipe through the rotary clamping connecting rods on the two sides of the lower end.

4. The floating adjustable blood sampling pipetting device of claim 1 wherein the blood collection tube has a communicating vent tube on a lower side thereof.

5. The floating adjustment type blood sampling and pipetting device according to claim 1, wherein a sliding clamping groove is formed in one side of the inner part of the lower connecting pipe; the sliding clamping groove extends to the upper part of the inner part of the bottom connecting pipe from the lower end surface of the inner part of the bottom connecting pipe; a sliding clamping and connecting rod is arranged on one side of the outer part of the blood collection tube; the blood sampling tube is inserted from the lower end of the bottom connecting tube through the sliding clamping rod and is clamped on the sliding clamping groove on one side inside the lower connecting tube in a vertically sliding manner.

6. The floating regulated blood collection pipetting device of claim 1, further comprising a seal assembly; the sealing assembly comprises a connecting ring and a sealing rubber ring body; an opening is formed in the middle of the upper end of the top airbag; connecting rings are arranged around the opening; a sealing rubber ring body is arranged on the outer side of the periphery of the driving rod; the driving rod is connected to the inner side of the periphery of the connecting ring in a rotating and sealing mode through the sealing rubber ring body on the outer side of the periphery.

7. The floating adjustable blood collection and pipetting device of claim 1, wherein the upper, middle, and bottom connecting tubes are made of plastic.

8. The floating adjustable blood sampling and pipetting device of claim 3 wherein the annular snap-fit groove around the interior of the upper connector tube has a polytetrafluoroethylene coating.

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