CN113208589A - Blood sampling pipette - Google Patents
Blood sampling pipette Download PDFInfo
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- CN113208589A CN113208589A CN202110525486.0A CN202110525486A CN113208589A CN 113208589 A CN113208589 A CN 113208589A CN 202110525486 A CN202110525486 A CN 202110525486A CN 113208589 A CN113208589 A CN 113208589A
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- tube
- connecting pipe
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- blood collection
- driving
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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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Hematology (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a blood sampling pipette, which comprises a top air bag, an upper connecting pipe, a middle connecting pipe, a bottom connecting pipe, a blood sampling pipe and a driving assembly, wherein the top air bag is connected with the upper connecting pipe; 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 driving sleeve to rotate, the driving sleeve drives the floating external thread ring body to float up and down through the internal thread ring surface, the blood sampling tube is driven to move up and down in the bottom connecting tube, the lower end of the blood sampling tube can be upwards arranged in the bottom connecting tube to be protected, or the lower end of the blood sampling tube extends downwards to the lower part of the bottom connecting tube to be used for sampling blood, meanwhile, the distance that the lower end of the blood sampling tube extends downwards to the lower part of the bottom connecting tube can be adjusted, and therefore the convenience of liquid collection is improved.
Description
Technical Field
The invention relates to a blood sampling pipette.
Background
At present, the existing blood sampling pipette is a common tool used in medical departments such as hospitals to 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, 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 on one side of the lower end of the blood sampling pipe, the blood to be collected is contacted with 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 sucking, blood sampling is realized, the collected blood is extruded into diluent through an air bag, then the extruding and loosening of the air bag are realized, so that the diluent is sucked from the lower end of the blood sampling pipe and is filled in the whole blood sampling pipe, the suction of the diluent is realized, the air bag is extruded to realize the liquid transfer of the diluent, but the blood sampling pipette 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 blood sampling pipette which can telescopically adjust and protect 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 blood sampling pipette comprises a top air bag, an upper connecting pipe, a middle connecting pipe, a bottom connecting pipe, a blood sampling pipe and a driving assembly; 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 driving assembly comprises a driving rod, a ventilation cover, a driving sleeve and a floating external thread ring body; 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; a driving sleeve is arranged below the ventilation cover; the longitudinal section of the driving sleeve is of an inverted U-shaped structure; the lower end of the ventilation cover is inserted into the middle of the upper end of the driving sleeve and is fixed above the inner part of the driving sleeve; the driving sleeve is positioned in the middle connecting pipe; an internal thread ring surface is arranged inside the periphery of the driving sleeve; the outer sides of the periphery of the upper end of the blood collection tube are provided with floating external thread ring bodies; the floating external thread ring body is in threaded rotary connection with the internal thread ring surface inside the periphery of the driving sleeve; and liquid drainage channels penetrating through the upper part and the lower part of the floating external thread ring body are uniformly arranged on the periphery of the floating external thread 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 driving sleeve to rotate, the driving sleeve drives the floating external thread ring body to float up and down through the internal thread ring surface, the blood sampling tube is driven to move up and down in the bottom connecting tube, the lower end of the blood sampling tube can be upwards arranged in the bottom connecting tube to be protected, or the lower end of the blood sampling tube extends downwards to the lower part of the bottom connecting tube to be used for sampling blood, meanwhile, the distance that the lower end of the blood sampling tube extends downwards to the lower part of the bottom connecting tube can be adjusted, and therefore the convenience of liquid collection is improved.
The top air bag is extruded after blood collection is finished, partial air flow enters the driving 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 liquid discharge channels uniformly arranged around the floating external thread ring body and is discharged from a backflow annular cavity between the bottom connecting pipe and the blood collection tube, and the volume accuracy of the collected liquid is guaranteed.
The blood sampling tube is convenient to disassemble, the floating external thread ring body moves downwards and is separated from the internal thread ring surface of the driving sleeve 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 floating external thread ring body 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 structural view of the driving assembly of the present invention.
Fig. 3 is a schematic top view of the floating external thread ring body 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 blood collection pipette includes a top air bag 1, an upper connection tube 2, a middle connection tube 3, a bottom connection tube 4, a blood collection tube 5, and a driving assembly 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 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 driving assembly 6 comprises a driving rod 61, a ventilation cover 62, a driving sleeve 63 and a floating external thread ring body 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; a driving sleeve 63 is arranged below the ventilation cover 62; the longitudinal section of the driving sleeve 63 is of an inverted U-shaped structure; the lower end of the ventilation cover 62 is inserted into the middle of the upper end of the driving sleeve 63 and fixed above the inner part of the driving sleeve 63; the driving sleeve 63 is positioned in the middle connecting pipe 3; an internal thread ring surface is arranged inside the periphery of the driving sleeve 63; the outer sides of the periphery of the upper end of the blood collection tube 5 are provided with floating external thread ring bodies 64; the floating external thread ring body 64 is in threaded rotary connection with the internal thread ring surface inside the periphery of the driving sleeve 63; the periphery of the floating external thread ring body 64 is uniformly provided with a liquid discharge channel 641 which penetrates through the upper part and the lower part.
As shown in fig. 1 to 5, it is further preferable that an annular clamping groove 21 is formed around the inside of the upper connection pipe 2; 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 driving sleeve 63 to rotate, the driving sleeve 63 drives the floating external thread ring body 64 to float up and down through the internal thread ring surface, 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.
According to the invention, after blood collection is finished, the top air bag 1 is squeezed, part of air flow enters the driving sleeve 63 from the ventilation cover 62 through the upper connecting pipe 2, 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 the liquid discharge channels 641 uniformly arranged around the floating external thread ring body 64 and is discharged from the backflow annular cavity 42 between the bottom connecting pipe 4 and the blood collection tube 5, and the accurate volume of the collected liquid is ensured.
The blood sampling tube 5 of the invention is convenient to detach, the floating external thread ring body 64 moves downwards and is separated from the internal thread ring surface of the driving sleeve 63 through 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 through the sliding clamping rod 52, and the floating external thread ring body 64 and the blood sampling tube 5 are detached from the bottom connecting tube 4, thereby 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 (7)
1. A blood sampling pipette 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 a driving assembly; 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 driving assembly comprises a driving rod, a ventilation cover, a driving sleeve and a floating external thread ring body; 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; a driving sleeve is arranged below the ventilation cover; the longitudinal section of the driving sleeve is of an inverted U-shaped structure; the lower end of the ventilation cover is inserted into the middle of the upper end of the driving sleeve and is fixed above the inner part of the driving sleeve; the driving sleeve is positioned in the middle connecting pipe; an internal thread ring surface is arranged inside the periphery of the driving sleeve; the outer sides of the periphery of the upper end of the blood collection tube are provided with floating external thread ring bodies; the floating external thread ring body is in threaded rotary connection with the internal thread ring surface inside the periphery of the driving sleeve; and liquid drainage channels penetrating through the upper part and the lower part of the floating external thread ring body are uniformly arranged on the periphery of the floating external thread ring body.
2. The blood collection pipette of claim 1, wherein an annular snap groove is formed around the inside of the upper connection tube; 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.
3. The blood collection pipette of claim 1, wherein a communication vent tube is provided on a lower side of the blood collection tube.
4. The blood collection pipette of claim 1, wherein a slide notch is formed at one side of the inside of the lower connection tube; 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.
5. The blood collection pipette of claim 1, further comprising a sealing 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.
6. The blood collection pipette of claim 1, wherein the upper, middle, and bottom connection tubes are made of plastic.
7. The blood collection pipette of claim 2, wherein a teflon coating is disposed in an annular snap-fit groove around the inside of the upper connector tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110525486.0A CN113208589A (en) | 2021-05-14 | 2021-05-14 | Blood sampling pipette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110525486.0A CN113208589A (en) | 2021-05-14 | 2021-05-14 | Blood sampling pipette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113208589A true CN113208589A (en) | 2021-08-06 |
Family
ID=77095742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110525486.0A Withdrawn CN113208589A (en) | 2021-05-14 | 2021-05-14 | Blood sampling pipette |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113208589A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113996438A (en) * | 2021-10-20 | 2022-02-01 | 江苏耀鸿电子有限公司 | Glue solution cleaning mechanism for transverse floating staggered copper-clad plate |
| CN114602565A (en) * | 2022-04-01 | 2022-06-10 | 江苏科华医疗器械科技有限公司 | Built-in block adjusting type pipette |
-
2021
- 2021-05-14 CN CN202110525486.0A patent/CN113208589A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113996438A (en) * | 2021-10-20 | 2022-02-01 | 江苏耀鸿电子有限公司 | Glue solution cleaning mechanism for transverse floating staggered copper-clad plate |
| CN113996438B (en) * | 2021-10-20 | 2023-08-15 | 江苏耀鸿电子有限公司 | Glue solution cleaning mechanism for transverse floating staggered copper-clad plate |
| CN114602565A (en) * | 2022-04-01 | 2022-06-10 | 江苏科华医疗器械科技有限公司 | Built-in block adjusting type pipette |
| CN114602565B (en) * | 2022-04-01 | 2023-06-02 | 江苏科华医疗器械科技有限公司 | Built-in block body adjusting type pipette |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210806 |
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| WW01 | Invention patent application withdrawn after publication |