CN113208590B - Rotary liquid-discharging type blood-taking pipette - Google Patents
Rotary liquid-discharging type blood-taking pipette Download PDFInfo
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- CN113208590B CN113208590B CN202110525542.0A CN202110525542A CN113208590B CN 113208590 B CN113208590 B CN 113208590B CN 202110525542 A CN202110525542 A CN 202110525542A CN 113208590 B CN113208590 B CN 113208590B
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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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Abstract
The invention discloses a rotary liquid discharge type blood sampling pipette, which comprises a rotary liquid discharge mechanism; according to the invention, the periphery below the blood collection tube is hermetically connected to the periphery inside the bottom connecting tube through the telescopic connecting ring, so that liquid falling into a backflow annular cavity between the bottom connecting tube and the blood collection tube cannot be discharged downwards into a container to form dripping or pollution problems, after collection and liquid transfer are completed, the backflow liquid can be poured out from the annular liquid discharge port by rotating the opening and closing ring body when the lower end of the opening and closing ring body rotates upwards to be separated from the periphery outer side of the annular liquid discharge port, and after completion, the lower end of the opening and closing ring body rotates downwards to cover the periphery outer side connected with the annular liquid discharge port to form sealing.
Description
Technical Field
The invention relates to a rotary liquid-discharging type blood sampling pipette.
Background
At present, the existing blood sampling pipette is a common tool used when blood is analyzed by medical departments such as hospitals and the like, and the structure of the existing blood sampling pipette generally comprises a top air bag, a lower connecting pipe and a blood sampling pipe, wherein the lower connecting pipe is arranged at the lower end of the top air bag, the blood sampling pipe is arranged 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 formed in 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 sucking, blood sampling is realized, the collected blood is extruded into diluent through an air bag, then the extruding loosening is realized through the extrusion of the air bag, so that the diluent is sucked from the lower end of the blood sampling pipe and fills the whole blood sampling pipe, the suction of the diluent is realized, and the air bag is extruded to realize the liquid transfer of the diluent; in addition, the upper end of the blood collection tube is overflowed by redundant liquid collected by the blood collection tube in the existing blood collection pipette, and the liquid flows back to the container from the annular cavity between the blood collection tube and the bottom connecting tube, so that the liquid in the container is dripped and splashed, and the liquid is polluted by external dust, and the quality of the liquid to be collected is influenced and is not beneficial to detection.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: the rotary liquid-discharging type blood sampling pipette can avoid backflow and dripping of a sampling liquid, can be telescopically adjusted and can 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 rotary liquid-discharging type blood sampling pipette comprises a top air bag, an upper connecting pipe, a middle connecting pipe, a bottom connecting pipe, a blood sampling pipe, a driving assembly and a rotary liquid-discharging mechanism; the lower end of the top air bag 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 movably and hermetically connected with the bottom connecting pipe; a blood collection tube is vertically 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 periphery of the lower part of the blood collection tube is hermetically connected with the periphery of the inner part of the bottom connecting tube through a telescopic connecting ring; 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; 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; the rotary liquid discharge mechanism comprises a plurality of connecting rods and an opening and closing ring body; an annular liquid outlet is formed in the periphery of the middle connecting pipe, a plurality of connecting rods are uniformly arranged on the upper side and the lower side of the inner side of the annular liquid outlet respectively, and the upper end and the lower end of each connecting rod are connected to the inner wall of the middle connecting pipe on the upper side and the lower side of the annular liquid outlet respectively; a driving thread ring surface is arranged on the periphery of the middle connecting pipe above the outer side of the annular liquid discharge port; the periphery of the inner side of the upper end of the opening and closing ring body is in threaded rotary connection with the driving threaded ring surface, and the lower end of the opening and closing ring body is in downward rotary covering or upward rotary separation connection with the periphery of the annular liquid discharge port.
Further, outer-side internal thread connecting rings are arranged on the outer sides of the periphery of the upper end of the bottom connecting pipe; the periphery of the lower end of the middle connecting pipe is provided with an external thread ring surface; the bottom connecting pipe is rotatably connected to an external thread ring surface around the lower end of the middle connecting pipe through an external internal thread connecting ring outside the periphery of the upper end; a sealing ring is arranged around the upper end of the bottom connecting pipe; the sealing ring is in sealing and abutting connection between the upper end face of the bottom connecting pipe and the lower end face of the middle connecting pipe.
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 the middle of one side inside the lower 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 vertically clamped on the sliding clamping groove on one side inside the lower connecting tube in a sliding and clamping manner through the sliding clamping and connecting rod.
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 air bag; 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 of the inner part of the upper connecting pipe.
The invention has the advantages of
According to the invention, the periphery below the blood collection tube is hermetically connected to the periphery inside the bottom connecting tube through the telescopic connecting ring, so that liquid falling into a backflow annular cavity between the bottom connecting tube and the blood collection tube cannot be discharged downwards into a container to form dripping or pollution problems, after collection and liquid transfer are completed, the opening and closing ring body is rotated, and when the lower end of the opening and closing ring body is rotated upwards and separated from the periphery outer side of the annular liquid discharge port, the backflow liquid can be poured out from the annular liquid discharge port, and after completion, the lower end of the opening and closing ring body is rotated downwards to cover and connect the periphery outer side of the annular liquid discharge port to form sealing, so that the blood collection device can be rapidly put into next collection work, and is ingenious in structural design and convenient to operate.
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 the liquid discharge channels uniformly arranged on the periphery of the floating external thread ring body and falls into the backflow annular cavity between the bottom connecting pipe and the blood collection tube, and the accurate volume 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, then the bottom connecting tube is rotated, the external internal thread connecting ring on the outer side of the periphery of the upper end of the bottom connecting tube is rotated and is separated from the external thread ring surface on the periphery of the lower end of the middle connecting tube, and therefore the blood sampling tube and the bottom connecting tube can be cleaned and replaced.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural view of the lower end of the opening and closing ring body covering the annular liquid discharge port.
FIG. 3 is a schematic structural view showing the lower end of the opening and closing ring body of the present invention being separated from the annular liquid discharge port.
FIG. 4 is an enlarged view of the middle connection tube and the bottom connection tube according to the present invention.
FIG. 5 is an enlarged schematic view of the blood collection tube and the bottom connection tube of the present invention.
Fig. 6 is a schematic top view of the floating external thread ring body according to the present invention.
Fig. 7 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 7, a rotary liquid-discharging blood sampling pipette comprises a top air bag 1, an upper connecting tube 2, a middle connecting tube 3, a bottom connecting tube 4, a blood sampling tube 5, a driving assembly 6, and a rotary liquid discharging mechanism 8; 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 movably and hermetically 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 periphery of the lower part of the blood collection tube 5 is hermetically connected with the periphery of the inner part of the bottom connecting tube 4 through a telescopic connecting ring 53, and the telescopic connecting ring 53 can be a corrugated tube; 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; liquid drainage channels 641 penetrating through the upper part and the lower part are uniformly arranged on the periphery of the floating external thread ring body 64; the rotary liquid discharge mechanism 8 comprises a plurality of connecting rods 82 and an opening and closing ring body 81; an annular liquid discharge port 31 is formed in the periphery of the middle connecting pipe 3, a plurality of connecting rods 82 are uniformly arranged on the inner side of the annular liquid discharge port 31 from top to bottom, and the upper end and the lower end of each connecting rod 82 are connected to the inner wall of the middle connecting pipe 3 on the upper side and the lower side of the annular liquid discharge port 31 respectively; a driving thread ring surface 32 is arranged on the periphery of the middle connecting pipe 3 above the outer side of the annular liquid discharge port 31; the periphery of the inner side of the upper end of the opening and closing ring body 81 is in threaded rotary connection with the driving threaded ring surface 32, and the lower end of the opening and closing ring body 81 is in downward rotary covering or upward rotary separation connection with the periphery of the annular liquid discharge port 31.
As shown in fig. 1 to 7, further, an outer internal thread connecting ring 43 is arranged outside the periphery of the upper end of the bottom connecting pipe 4; the periphery of the lower end of the middle connecting pipe 3 is provided with an external thread ring surface; the bottom connecting pipe 4 is rotatably connected to an external thread ring surface on the periphery of the lower end of the middle connecting pipe 3 through an external internal thread connecting ring 43 on the outer side of the periphery of the upper end; a sealing ring 44 is arranged around the upper end of the bottom connecting pipe 4; the sealing ring 44 is in sealing contact with the upper end surface of the bottom connecting pipe 4 and the lower end surface of the middle connecting pipe 3. Preferably, the periphery of the inside of the upper connecting pipe 2 is provided with an annular clamping groove 21; two rotary clamping rods 611 are respectively arranged on two sides of the lower end of the driving rod 61; 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 the middle of one side inside the lower 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 vertically slidably engaged with the slide engaging groove 41 on one side inside the lower connection tube 4 by a slide engaging rod 52. 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.
According to the invention, the periphery below the blood collection tube 5 is hermetically connected to the periphery inside the bottom connecting tube 4 through the telescopic connecting ring 53, so that liquid falling into the backflow annular cavity 42 between the bottom connecting tube 4 and the blood collection tube 5 cannot be discharged downwards into a container to form a dripping or pollution problem, after collection and pipetting are finished, the opening and closing ring body 81 is rotated, when the lower end of the opening and closing ring body 81 is rotated upwards to be separated from the periphery outer side of the annular liquid discharge opening 31, the backflow liquid can be poured out from the annular liquid discharge opening 31, and after the completion, the lower end of the opening and closing ring body 81 is rotated downwards to cover the periphery outer side connected with the annular liquid discharge opening 31 to form a seal, so that the structure design is ingenious, and the operation is convenient.
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 is discharged downwards from the liquid discharge channels 641 uniformly arranged around the floating external thread ring body 64 and falls into 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 collection tube 5 is convenient to disassemble, 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 external internal thread connecting ring on the outer side of the periphery of the upper end of the bottom connecting tube 4 is rotated to be separated from the external thread ring surface on the periphery of the lower end of the middle connecting tube 3, the blood collection tube 5 and the bottom connecting tube 4 can be cleaned and replaced, and the like.
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 rotary liquid-discharging type 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, a driving assembly and a rotary liquid-discharging 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 movably and hermetically connected with the 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 periphery of the lower part of the blood collection tube is hermetically connected with the periphery of the inner part of the bottom connecting tube through a telescopic connecting ring; 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 hood; 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; 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; the rotary liquid discharge mechanism comprises a plurality of connecting rods and an opening and closing ring body; an annular liquid outlet is formed in the periphery of the middle connecting pipe, a plurality of connecting rods are uniformly arranged on the upper side and the lower side of the inner side of the annular liquid outlet respectively, and the upper end and the lower end of each connecting rod are connected to the inner wall of the middle connecting pipe on the upper side and the lower side of the annular liquid outlet respectively; a driving thread ring surface is arranged on the periphery of the middle connecting pipe above the outer side of the annular liquid discharge port; the periphery of the inner side of the upper end of the opening and closing ring body is in threaded rotary connection with the driving threaded ring surface, and the lower end of the opening and closing ring body is in downward rotary covering or upward rotary separation connection with the periphery of the annular liquid discharge port.
2. A rotary liquid discharge blood sampling pipette as recited in claim 1 wherein the bottom connecting tube is provided with an outer internal thread connecting ring around the outer side of the upper end; the periphery of the lower end of the middle connecting pipe is provided with an external thread ring surface; the bottom connecting pipe is rotatably connected to an external thread ring surface on the periphery of the lower end of the middle connecting pipe through an external internal thread connecting ring on the outer side of the periphery of the upper end; a sealing ring is arranged around the upper end of the bottom connecting pipe; the sealing ring is in sealing and abutting connection between the upper end face of the bottom connecting pipe and the lower end face of the middle connecting pipe.
3. A rotary liquid discharge blood collection pipette as recited in claim 1 wherein an annular snap groove is provided 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 rods on the two sides of the lower end.
4. A rotary liquid discharge blood collection pipette as defined in claim 1 wherein a communicating vent tube is provided on the lower side of the blood collection tube.
5. A rotary liquid discharge blood sampling pipette as claimed in claim 1 wherein a sliding slot is provided in the middle of one side of the inside of the bottom connecting tube; a sliding clamping and connecting rod is arranged on one side of the outer part of the blood collection tube; the blood collection tube is vertically clamped on the sliding clamping groove on one side inside the bottom connecting tube in a sliding and clamping manner through the sliding clamping and connecting rod.
6. The rotary liquid discharge lancing pipette 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 rotary liquid discharge blood collection pipette of claim 1, wherein the upper connection tube, the middle connection tube, and the bottom connection tube are all made of plastic.
8. A rotary liquid discharge blood collection pipette as described in claim 3 wherein a polytetrafluoroethylene coating is disposed in an annular snap groove around the inside of the upper connecting tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110525542.0A CN113208590B (en) | 2021-05-14 | 2021-05-14 | Rotary liquid-discharging type blood-taking pipette |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110525542.0A CN113208590B (en) | 2021-05-14 | 2021-05-14 | Rotary liquid-discharging type blood-taking pipette |
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| CN113208590A CN113208590A (en) | 2021-08-06 |
| CN113208590B true CN113208590B (en) | 2023-01-20 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206385153U (en) * | 2017-01-13 | 2017-08-08 | 天津迈基生物科技有限公司 | A kind of gene detection sampler |
| CN110575184A (en) * | 2019-09-24 | 2019-12-17 | 江苏科华医疗器械科技有限公司 | Stepless regulation type range blood sampling device |
| CN111562142A (en) * | 2020-05-25 | 2020-08-21 | 江苏科华医疗器械科技有限公司 | Rotation regulation formula micro-blood collection tube |
| CN111579299A (en) * | 2020-05-25 | 2020-08-25 | 江苏科华医疗器械科技有限公司 | Swift blood sampling device |
-
2021
- 2021-05-14 CN CN202110525542.0A patent/CN113208590B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206385153U (en) * | 2017-01-13 | 2017-08-08 | 天津迈基生物科技有限公司 | A kind of gene detection sampler |
| CN110575184A (en) * | 2019-09-24 | 2019-12-17 | 江苏科华医疗器械科技有限公司 | Stepless regulation type range blood sampling device |
| CN111562142A (en) * | 2020-05-25 | 2020-08-21 | 江苏科华医疗器械科技有限公司 | Rotation regulation formula micro-blood collection tube |
| CN111579299A (en) * | 2020-05-25 | 2020-08-25 | 江苏科华医疗器械科技有限公司 | Swift blood sampling device |
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| CN113208590A (en) | 2021-08-06 |
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