CN116369879A - Invasive pressure sensor convenient for closed blood sampling - Google Patents
Invasive pressure sensor convenient for closed blood sampling Download PDFInfo
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- CN116369879A CN116369879A CN202310514435.7A CN202310514435A CN116369879A CN 116369879 A CN116369879 A CN 116369879A CN 202310514435 A CN202310514435 A CN 202310514435A CN 116369879 A CN116369879 A CN 116369879A
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- 238000010241 blood sampling Methods 0.000 title claims abstract description 15
- 239000008280 blood Substances 0.000 claims abstract description 103
- 210000004369 blood Anatomy 0.000 claims abstract description 103
- 230000005540 biological transmission Effects 0.000 claims abstract description 57
- 238000002347 injection Methods 0.000 claims abstract description 32
- 239000007924 injection Substances 0.000 claims abstract description 32
- 238000001802 infusion Methods 0.000 claims abstract description 19
- 230000010412 perfusion Effects 0.000 claims abstract description 17
- 241001411320 Eriogonum inflatum Species 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 17
- 238000005192 partition Methods 0.000 claims description 7
- 230000036772 blood pressure Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000005259 measurement Methods 0.000 abstract description 3
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 4
- 229960002897 heparin Drugs 0.000 description 4
- 229920000669 heparin Polymers 0.000 description 4
- 230000004872 arterial blood pressure Effects 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 210000004204 blood vessel Anatomy 0.000 description 2
- 230000035487 diastolic blood pressure Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000035488 systolic blood pressure Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000747 cardiac effect Effects 0.000 description 1
- 230000008828 contractile function Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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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
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
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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
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Biophysics (AREA)
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- Engineering & Computer Science (AREA)
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- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Cardiology (AREA)
- Hematology (AREA)
- Physiology (AREA)
- Vascular Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention belongs to the technical field of infusion equipment, and particularly relates to a invasive pressure sensor convenient for closed blood sampling. A invasive pressure sensor convenient for closed blood sampling comprises a bottle stopper puncture outfit, a drip chamber, an infusion tube, a perfusion valve, a pressure sensor, a three-way valve A, a pressure transmission tube A, a blood storage device, a pressure transmission tube B, a needleless mixed injection tee joint and a pressure transmission tube C which are connected in sequence. The invasive pressure sensor convenient for closed blood sampling provided by the invention can realize the measurement of invasive blood pressure and sealed blood sampling in the injection process.
Description
Technical Field
The invention belongs to the technical field of infusion equipment, and particularly relates to a invasive pressure sensor convenient for closed blood sampling.
Background
The invasive blood pressure is a direct measurement method based on liquid pressure transmission and a pressure sensor, is a gold standard for measuring clinical blood pressure at present, can measure the pressure change of the whole cardiac cycle in a blood vessel through the sensor, continuously monitors the systolic pressure, the diastolic pressure and the mean arterial pressure, and displays the numerical value and the waveform of the systolic pressure, the diastolic pressure and the mean arterial pressure on a monitor screen. The invasive direct arterial pressure monitoring is a continuous dynamic change process, is not affected by manual pressurization, cuff width and tightness, is accurate and reliable, and can take values at any time. The contractile function of the cardiac muscle can also be judged and analyzed according to the change of the arterial waveform. An invasive blood pressure sensor is an important medical sensor, and with the development of invasive measurement technology, the sensor will be widely applied in hospitals.
In order to reduce human wounds and facilitate sealed blood collection of a human body when invasive blood pressure is measured, the invention hopes to provide an invasive pressure sensor which facilitates sealed blood collection. Compared with the common blood sampling device, the invention is not easy to infect, does not need repeated puncture, reduces the pain and clinical workload of patients, and solves the problems of waste of blood of patients, pollution of waste blood and the like.
Disclosure of Invention
The invention aims to provide an invasive pressure sensor which is convenient for sealing blood sampling and solves the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a invasive pressure sensor convenient for closed blood sampling comprises a bottle stopper puncture outfit, a drip chamber, an infusion tube, a perfusion valve, a pressure sensor, a three-way valve A, a pressure transmission tube A, a blood storage device, a pressure transmission tube B, a needleless mixed injection tee joint and a pressure transmission tube C which are connected in sequence;
the perfusion valve comprises a perfusion valve main pipeline, and two ends of the perfusion valve main pipeline are respectively connected with an infusion pipe and a pressure sensor; the main pipeline of the filling valve is provided with a main pipeline side branch of the filling valve, the main pipeline of the filling valve is provided with a fluid stop block, and the fluid stop block is positioned at the junction of the main pipeline of the filling valve and the main pipeline side branch of the filling valve; a T-shaped elastic plug is arranged in the perfusion valve main pipeline side branch, and comprises a disc and a traction section which are fixedly connected; the disc is positioned at the junction of the main pipeline of the filling valve and the side branch of the main pipeline of the filling valve, and the traction section passes through the side branch of the main pipeline of the filling valve; the root of the main pipeline side branch of the filling valve is provided with a hard elastic ring, the side wall of the hard elastic ring is provided with a root fixing hole and a traction Duan Guding hole, the root of the hard elastic ring passes through the root fixing hole, the traction section passes through the traction Duan Guding hole, the traction section is provided with an anti-falling protrusion, and the distance from the anti-falling protrusion to the root of the main pipeline side branch of the filling valve is smaller than the diameter of the hard elastic ring;
the pressure sensor comprises a pressure sensing main channel, two ends of the pressure sensing main channel are respectively connected with a filling valve and a three-way valve A, a pressure sensor is arranged at the inner wall of the pressure sensing main channel, and a device connecting wire is connected to the pressure sensor;
the three-way valve A comprises a three-way valve A main channel and a three-way valve A side branch, and two ends of the three-way valve A main channel are respectively connected with a pressure sensor and a pressure transmission pipe A; the tail end of the side branch of the three-way valve A is provided with an air pressure adjusting cover, and the air pressure adjusting cover is provided with a perforation; a rotary piston A is arranged at the junction of the main channel of the three-channel A and the side branch of the three-way valve A, and a T-shaped channel A is arranged in the rotary piston A;
the blood storage device comprises a blood storage device main channel, wherein two ends of the blood storage device main channel are respectively connected with a pressure transmission pipe A and a pressure transmission pipe B, a blood storage device side branch is arranged at the side wall of the blood storage device main channel, and a blood drawing cylinder is connected at the blood storage device side branch in a sealing manner; a rotary piston B is arranged at the junction of the main channel of the blood reservoir and the side branch of the blood reservoir, and a T-shaped channel B is arranged in the rotary piston B;
the needleless mixed injection tee joint comprises a needleless mixed injection tee joint main channel, and two ends of the needleless mixed injection tee joint main channel are respectively connected with a pressure transmission pipe B and a pressure transmission pipe C; a three-way valve side branch is arranged at the side wall of the needleless mixed injection three-way main channel, a rotary piston C is arranged at the junction of the needleless mixed injection three-way main channel and the needleless mixed injection three-way side branch, and an elastic sealing plug is arranged in the needleless mixed injection three-way side branch; the rotary piston C is internally provided with a fluid reserving groove, a partition plate is arranged between the fluid reserving grooves, the fluid reserving groove is uniformly divided into two parts by the partition plate, and a U-shaped channel is formed inside the rotary piston C.
Preferably, the bottle stopper puncture outfit is fixedly connected with the drip chamber, the bottle stopper puncture outfit comprises a drip chamber cover and a puncture needle tube, the puncture needle tube penetrates through the drip chamber cover, a plurality of guide holes are formed in the needle head of the puncture needle, and the guide holes, the puncture needle tube and the drip chamber are communicated.
Preferably, a flow regulator is arranged at the infusion tube.
Preferably, a plurality of crease grooves are formed in the inner wall of the hard elastic ring.
Preferably, the filling valve main pipeline side branch is provided with a fixed cover, the fixed cover is in threaded connection with the filling valve main pipeline side branch, the inner side of the fixed cover is provided with a plurality of fixed feet, the fixed feet penetrate into the filling valve main pipeline side branch, and further, the fixed feet prop against the disc.
Preferably, the blood storage device comprises a blood storage device fixing plate, the blood storage device fixing plate is fixedly connected with the blood storage device main channel, a blood drawing device fixing frame is arranged on the blood storage device fixing plate, and the blood drawing device fixing frame frames a blood drawing tube; the head of the blood drawing cylinder is provided with a connecting pipe, the inner wall of the connecting pipe is provided with connecting pipe threads, and the outer wall of the tail end of the blood storage device side branch is provided with side branch threads; the blood storage device comprises a blood storage device side branch, a connecting pipe, a blood storage device side branch and a connecting pipe.
Preferably, the pressure sensor is provided with fixing wings at both sides.
Preferably, both sides of the blood reservoir fixing plate are provided with fixing plate fixing wings.
Preferably, the blood drawing cylinder comprises a main cylinder, a pushing piston is arranged in the main cylinder, and a sealing sleeve is arranged between the main cylinder and the pushing piston.
Preferably, the inner diameter of the pressure transmission tube a, the inner diameter of the pressure transmission tube B and the inner diameter of the pressure transmission tube C are smaller than the inner diameter of the infusion tube, and the wall thickness of the pressure transmission tube a, the wall thickness of the pressure transmission tube B and the wall thickness of the pressure transmission tube C are larger than the wall thickness of the infusion tube.
Compared with the prior art, the invention has the beneficial effects that:
(1) The invasive pressure sensor convenient for closed blood sampling provided by the invention can realize the measurement of invasive blood pressure and sealed blood sampling in the injection process;
(2) The inner diameter of the pressure transmission pipe A, the inner diameter of the pressure transmission pipe B and the inner diameter of the pressure transmission pipe C are smaller than the inner diameter of the infusion pipe, the wall thickness of the pressure transmission pipe A, the wall thickness of the pressure transmission pipe B and the wall thickness of the pressure transmission pipe C are larger than the wall thickness of the infusion pipe, the pipe diameters and the wall thicknesses of the pressure transmission pipe A, the pressure transmission pipe B and the pressure transmission pipe C are smaller, the pressure transmission pipe A, the pressure transmission pipe B and the pressure transmission pipe C are made of harder materials, the pipe with thicker wall thickness is poor in deformation performance, and the pressure loss can be reduced in the pressure measuring process;
(3) The invention provides the invasive pressure sensor convenient for sealing blood collection, heparin can be temporarily stored by the arrangement of the blood storage device, and blood is led to the needleless mixed injection tee joint, so that the sealing blood collection by operators is convenient.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an exploded view of the bottle stopper piercer-drip chamber combination of the present invention;
FIG. 3 is an exploded view of the perfusion-pressure sensor-three-way valve A of the present invention;
FIG. 4 is a cross-sectional view of a filling valve according to the present invention;
FIG. 5 is an exploded view of the blood reservoir of the present invention;
FIG. 6 is an exploded view of the three-way valve C of the present invention;
in the figure: 1. a bottle stopper puncture outfit; 2. a dropping funnel; 3. an infusion tube; 4. a filling valve; 5. a pressure sensor; 6. a three-way valve A;7. a pressure transmission pipe A;8. a blood reservoir; 9. a pressure transmission pipe B;10. a needleless mixed injection tee joint; 11. a pressure transmission pipe C;12. a dropping funnel cover; 13. puncture needle tube; 14. a deflector aperture; 15. a flow regulator; 16. a main pipeline of the filling valve; 17. a main pipeline side branch of the filling valve; 18. a fluid stop; t-shaped elastic plug; 20. a disc; 21. a pulling section; 22. a fixed cover; 23. a fixed foot; 24. a hard elastic ring; 25. a root fixing hole; 26. a pulling section fixing hole; 27. an anti-falling protrusion; 28. crease grooves; 29. a pressure sensor; 30. a device connection line; 31. a main channel of the three-way valve A; 32. a side branch of the three-way valve A; 33. an air pressure adjusting cover; 34. perforating; 35. adjusting the rotary piston A; t-channel A;37. a fixed wing; 38. a main blood reservoir line; 39. a blood reservoir side branch; 40. a blood drawing tube; t-channel B;42. a blood reservoir fixing plate; 43. a hemospast fixing frame; 44. a connecting pipe; 45. connecting pipe threads; 46. a side branch thread; 47. a two-way connector; 48. a flow guiding pipe; 49. an adjusting ring; 50. external threads of the guide pipe; 51. fixing wings of the fixing plate; 52. a main barrel; 53. pushing the piston; 54. sealing sleeve; 55. needleless mixed injection tee joint main channel; 56. a three-way valve side branch; 57. rotating the piston C;58. an elastic sealing plug; 59. a fluid reserving groove; 60. a partition plate; u-shaped channel.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a technical scheme of an invasive pressure sensor which is convenient for closed blood sampling, comprising the following steps:
the utility model provides a be convenient for seal invasive pressure sensor of blood sampling, includes bottle plug puncture ware 1, drip chamber 2, infusion pipe 3, filling valve 4, pressure sensor 5, three-way valve A6, pressure transmission pipe A7, blood reservoir 8, pressure transmission pipe B9, needleless mixed injection tee bend 10 and pressure transmission pipe C11 that connect gradually. The parts are in threaded connection.
The bottle stopper puncture outfit 1 is fixedly connected with the drip chamber 2, the bottle stopper puncture outfit 1 comprises a drip chamber cover 12 and a puncture needle tube 13, the puncture needle tube 13 penetrates through the drip chamber cover 12, three guide holes 14 distributed in an annular array are formed in the needle head of the puncture needle tube 13, and the guide holes 14, the inside of the puncture needle tube 13 and the inside of the drip chamber 2 are communicated. A flow regulator 15 is provided on the infusion tube 3 for regulating the flow rate in the tubing. The perfusion valve 4, the pressure sensor 5 and the three-way valve A6 are designed into a whole, and the arrangement can reduce inaccuracy of blood pressure measurement values caused by deformation of a pipeline near the pressure sensor 5.
The filling valve 4 comprises a filling valve main pipeline 16, and two ends of the filling valve main pipeline 16 are respectively connected with the infusion tube A3 and the pressure sensor 5. The three are in threaded connection, so that the tightness of the three is ensured, and the disassembly and the assembly can be convenient. The filling valve main pipeline 16 is provided with a filling valve main pipeline side branch 17, the filling valve main pipeline side branch 17 is used for setting a filling valve 4 switch, the filling valve main pipeline 16 is provided with a fluid stop block 18, the flow stop block 18 is positioned at the junction of the filling valve main pipeline 16 and the filling valve main pipeline side branch 17, and the fluid stop block 18 is used for reducing the flow of the filling valve main pipeline 16. In order to realize the opening and closing of the filling valve main pipeline 16, a T-shaped elastic plug 19 is arranged in the filling valve main pipeline side branch 17, and the T-shaped elastic plug 19 comprises a disc 20 and a traction section 21, and the disc 20 is fixedly connected with the traction section 21. In order to facilitate the installation of the T-shaped elastic plug 19, the main filling valve pipeline side branch 17 is provided with a fixed cover 22, the fixed cover 22 is in threaded connection with the main filling valve pipeline side branch 17, the inner side of the fixed cover 22 is provided with four uniformly distributed fixed feet 23, the four fixed feet 23 penetrate into the main filling valve pipeline side branch 17, the disc 20 is positioned at the junction of the main filling valve pipeline 16 and the main filling valve pipeline side branch 17, and the traction section 21 penetrates through the main filling valve pipeline side branch 17, and further, the four fixed feet 23 are propped against the disc 20. When an operator pulls the pulling section 21, the T-shaped elastic plug 19 deforms, and fluid flows through the gap to realize the opening of the filling valve 4; when the operator releases the pulling section 21, the t-shaped elastic plug 19 returns to its original shape, allowing the filling valve 4 to close. In order to facilitate the traction of the traction section 21, a hard elastic ring 24 is arranged at the root of the main pipeline branch 17 of the perfusion valve, a root fixing hole 25 and a traction Duan Guding hole 26 are arranged on the side wall of the hard elastic ring 24, the traction section 21 passes through the traction Duan Guding hole 26, an anti-falling protrusion 27 is arranged on the traction section 21, the distance from the anti-falling protrusion 27 to the root of the main pipeline branch 17 of the perfusion valve is smaller than the diameter of the hard elastic ring 24, an operator pinches the hard elastic ring 24 to deform the hard elastic ring 24, and the traction section 21 is pulled to deform in the process. In order to realize directional deformation of the hard elastic ring 24 when the hard elastic ring 24 is subjected to external force, a plurality of crease grooves 28 are formed in the inner wall of the hard elastic ring 24, when the hard elastic ring is extruded by external force on two sides, the crease grooves 28 are preferentially deformed, and the stretching effect of the pulling section 21 is improved as much as possible.
The pressure sensor 5 comprises a pressure sensing main channel 28, two ends of the pressure sensing main channel 28 are respectively connected with the filling valve 4 and the three-way valve A3, a pressure sensor 29 is arranged at the inner wall of the pressure sensing main channel 28, and a device connecting wire 30 is connected to the pressure sensor 29. Through external equipment, an operator can read invasive blood pressure. The three-way valve A6 comprises a three-way valve A main channel 31 and a three-way valve A side branch 32, and two ends of the three-way valve A main channel 31 are respectively connected with the pressure sensor 5 and the pressure transmission pipe A7; the tail end of the side branch 32 of the three-way valve A is provided with an air pressure regulating cover 33, the air pressure regulating cover 33 is provided with a perforation 34, the diameter of the perforation 34 is smaller, the perforation 34 can be communicated with external atmospheric pressure, and the pressure at the pressure sensor 29 is zeroed, so that the blood pressure measurement value can be more accurate by the arrangement; the junction of the main channel 31 of the three-channel A and the side branch 32 of the three-way valve A is provided with a rotary piston A35, and a T-shaped channel A36 is arranged in the rotary piston A35. By adjusting the rotary piston A35, the opening and closing of the side branch 32 of the three-way valve A are realized, and whether the pressure is zeroed is further realized. In order to ensure the stability and the accuracy of the pressure sensor 5 during operation, the filling valve 4, the pressure sensor 5 and the three-way valve A6 are connected into a whole, and fixing wings 37 are arranged on two sides of the pressure sensor 5. The present device can be fixedly mounted to a designated position by the fixing wing 37.
The blood reservoir 8 comprises a main blood reservoir pipe 38, two ends of the main blood reservoir pipe 38 are respectively connected with a pressure transmission pipe A7 and a pressure transmission pipe B9, a side wall of the main blood reservoir pipe 38 is provided with a side blood reservoir branch 39, the side blood reservoir branch 39 is hermetically connected with a blood drawing cylinder 40, a rotary piston B40 is arranged at the junction of the main blood reservoir pipe 38 and the side blood reservoir branch 39, and a T-shaped channel B41 is arranged inside the rotary piston B40. Opening and closing of the reservoir side branch 39 is achieved by adjusting the rotary piston B40. In order to facilitate the fixation of the blood reservoir 8, the blood reservoir 8 comprises a blood reservoir fixing plate 42, the blood reservoir fixing plate 42 is fixedly connected with the blood reservoir main channel 38, a blood pump fixing frame 43 is arranged on the blood reservoir fixing plate 42, and the blood pump fixing frame 43 supports the blood pump 40; the head of the blood drawing tube 40 is provided with a connecting tube 44, the inner wall of the connecting tube 44 is provided with connecting tube threads 45, and the outer wall of the tail end of the blood reservoir side branch 39 is provided with side branch threads 46; the blood reservoir side branch 39 and the connecting pipe 44 are provided with a two-way connector 47, the two-way connector 47 comprises a flow guide pipe 48 and an adjusting ring 49, the flow guide pipe 48 is fixedly connected with the adjusting ring 49, one end of the flow guide pipe 48 is provided with a flow guide pipe external thread 50, the flow guide pipe external thread 50 is connected with the connecting pipe thread 45, and the other end of the flow guide pipe 48 is inserted into the blood reservoir side branch 39. To facilitate the fixation of the reservoir 8, fixation plate fixation wings 51 are provided on both sides of the reservoir fixation plate 42. To prevent infection at this point of the reservoir 8, the blood drawing cartridge 40 includes a main cartridge 52, a pushing piston 53 is provided inside the main cartridge 52, and a sealing sleeve 54 is provided between the main cartridge 52 and the pushing piston 53.
The needleless mixed injection tee 10 comprises a needleless mixed injection tee main channel 55, and two ends of the needleless mixed injection tee main channel 55 are respectively connected with a pressure transmission pipe B9 and a pressure transmission pipe C11; a three-way valve side branch 56 is arranged at the side wall of the needleless mixed injection three-way main channel 55, a rotary piston C57 is arranged at the junction of the needleless mixed injection three-way main channel 55 and the needleless mixed injection three-way side branch 56, and an elastic sealing plug 58 is arranged in the needleless mixed injection three-way side branch 56; the rotary piston C57 is provided with fluid reserving grooves 59 inside, a partition plate 60 is provided between the fluid reserving grooves 59, the partition plate 60 uniformly divides the fluid reserving grooves 59 into two parts, and a U-shaped channel 61 is formed inside the rotary piston C57. The provision of the U-shaped channel 61 enables the fluid path through the rotary piston C57 to be curved. When the central position of the U-shaped channel 61 is directed towards the elastic sealing plug 58, the fluid path through the rotary piston C57 passes the elastic sealing plug 58, and the liquid or residual blood trapped inside the elastic sealing plug 58 can be flushed. When the needleless mixed injection tee 10 is to be closed, the rotary piston C57 is only required to be turned over by 180 degrees.
When the device is used, the bottle stopper puncture outfit 1 is pricked into a heparin bottle, heparin is introduced into the device, and the device is flushed. The end-to-end connection disease of this device rotates three-way valve A6, communicates three-way valve A side branch 31 and pressure sensor 5, can carry out pressure zeroing to pressure sensor 5 this moment for the invasive blood pressure of survey is more accurate. After zeroing, the three-way valve A6 is turned to close the side branch 32 of the three-way valve A, and further, the pressure sensor 5 and the main channel 31 of the three-way valve A can perform invasive blood pressure measurement at the moment. When blood collection is needed, the T-shaped channel B41 is rotated, so that the pressure transmission tube B9 is communicated with the blood reservoir 8, the blood drawing cylinder 40 is drawn, heparin in the pressure transmission tube B9 is transferred into the blood drawing cylinder 40, blood is lifted to the needleless mixed injection tee 10 from a patient blood vessel, and an operator takes a needle cylinder to insert the elastic sealing plug 58 for blood collection. After the blood is taken out, the needle cylinder is pulled out.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An invasive pressure sensor convenient for closed blood sampling, which is characterized in that: comprises a bottle stopper puncture outfit, a dropping funnel, an infusion tube, a perfusion valve, a pressure sensor, a three-way valve A, a pressure transmission tube A, a blood storage device, a pressure transmission tube B, a needleless mixed injection three-way and a pressure transmission tube C which are connected in sequence;
the perfusion valve comprises a perfusion valve main pipeline, and two ends of the perfusion valve main pipeline are respectively connected with an infusion pipe and a pressure sensor; the main pipeline of the filling valve is provided with a main pipeline side branch of the filling valve, the main pipeline of the filling valve is provided with a fluid stop block, and the fluid stop block is positioned at the junction of the main pipeline of the filling valve and the main pipeline side branch of the filling valve; a T-shaped elastic plug is arranged in the perfusion valve main pipeline side branch, and comprises a disc and a traction section which are fixedly connected; the disc is positioned at the junction of the main pipeline of the filling valve and the side branch of the main pipeline of the filling valve, and the traction section passes through the side branch of the main pipeline of the filling valve; the root of the main pipeline side branch of the filling valve is provided with a hard elastic ring, the side wall of the hard elastic ring is provided with a root fixing hole and a traction Duan Guding hole, the root of the hard elastic ring passes through the root fixing hole, the traction section passes through the traction Duan Guding hole, the traction section is provided with an anti-falling protrusion, and the distance from the anti-falling protrusion to the root of the main pipeline side branch of the filling valve is smaller than the diameter of the hard elastic ring;
the pressure sensor comprises a pressure sensing main channel, two ends of the pressure sensing main channel are respectively connected with a filling valve and a three-way valve A, a pressure sensor is arranged at the inner wall of the pressure sensing main channel, and a device connecting wire is connected to the pressure sensor;
the three-way valve A comprises a three-way valve A main channel and a three-way valve A side branch, and two ends of the three-way valve A main channel are respectively connected with a pressure sensor and a pressure transmission pipe A; the tail end of the side branch of the three-way valve A is provided with an air pressure adjusting cover, and the air pressure adjusting cover is provided with a perforation; a rotary piston A is arranged at the junction of the main channel of the three-channel A and the side branch of the three-way valve A, and a T-shaped channel A is arranged in the rotary piston A;
the blood storage device comprises a blood storage device main channel, wherein two ends of the blood storage device main channel are respectively connected with a pressure transmission pipe A and a pressure transmission pipe B, a blood storage device side branch is arranged at the side wall of the blood storage device main channel, and a blood drawing cylinder is connected at the blood storage device side branch in a sealing manner; a rotary piston B is arranged at the junction of the main channel of the blood reservoir and the side branch of the blood reservoir, and a T-shaped channel B is arranged in the rotary piston B;
the needleless mixed injection tee joint comprises a needleless mixed injection tee joint main channel, and two ends of the needleless mixed injection tee joint main channel are respectively connected with a pressure transmission pipe B and a pressure transmission pipe C; a three-way valve side branch is arranged at the side wall of the needleless mixed injection three-way main channel, a rotary piston C is arranged at the junction of the needleless mixed injection three-way main channel and the needleless mixed injection three-way side branch, and an elastic sealing plug is arranged in the needleless mixed injection three-way side branch; the rotary piston C is internally provided with a fluid reserving groove, a partition plate is arranged between the fluid reserving grooves, the fluid reserving groove is uniformly divided into two parts by the partition plate, and a U-shaped channel is formed inside the rotary piston C.
2. A pressure sensor for facilitating closed blood collection as claimed in claim 1, wherein: the bottle stopper puncture outfit is fixedly connected with the drip chamber, the bottle stopper puncture outfit comprises a drip chamber cover and a puncture needle tube, the puncture needle tube penetrates through the drip chamber cover, a plurality of diversion holes are formed in the needle head of the puncture needle, and the diversion holes, the puncture needle tube and the drip chamber are communicated.
3. A pressure sensor for facilitating closed blood collection as claimed in claim 1, wherein: the infusion tube is provided with a flow regulator.
4. A pressure sensor for facilitating closed blood collection as claimed in claim 1, wherein: the inner wall of the hard elastic ring is provided with a plurality of crease grooves.
5. A pressure sensor for facilitating closed blood collection as claimed in claim 1, wherein: the perfusion valve main pipeline side branch is provided with a fixed cover, the fixed cover is in threaded connection with the perfusion valve main pipeline side branch, the inner side of the fixed cover is provided with a plurality of fixed feet, the fixed feet penetrate into the perfusion valve main pipeline side branch, and further, the fixed feet prop against the disc.
6. A pressure sensor for facilitating closed blood collection as claimed in claim 1, wherein: the blood storage device comprises a blood storage device fixing plate which is fixedly connected with a blood storage device main channel, a blood drawing device fixing frame is arranged on the blood storage device fixing plate, and a blood drawing tube is arranged on the blood drawing device fixing frame; the head of the blood drawing cylinder is provided with a connecting pipe, the inner wall of the connecting pipe is provided with connecting pipe threads, and the outer wall of the tail end of the blood storage device side branch is provided with side branch threads; the blood storage device comprises a blood storage device side branch, a connecting pipe, a blood storage device side branch and a connecting pipe.
7. A pressure sensor for facilitating closed blood collection as claimed in claim 1, wherein: and fixed wings are arranged on two sides of the pressure sensor.
8. The invasive pressure sensor for facilitating closed blood collection according to claim 6, wherein: and fixing wings of the fixing plate are arranged on two sides of the fixing plate.
9. A pressure sensor for facilitating closed blood collection as claimed in claim 1, wherein: the blood drawing cylinder comprises a main cylinder, a pushing piston is arranged in the main cylinder, and a sealing sleeve is arranged between the main cylinder and the pushing piston.
10. The invasive pressure sensor according to claim 1, wherein the inner diameter of the pressure transmission tube A, the inner diameter of the pressure transmission tube B and the inner diameter of the pressure transmission tube C are smaller than the inner diameter of the infusion tube, and the wall thickness of the pressure transmission tube A, the wall thickness of the pressure transmission tube B and the wall thickness of the pressure transmission tube C are larger than the wall thickness of the infusion tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310514435.7A CN116369879A (en) | 2023-05-09 | 2023-05-09 | Invasive pressure sensor convenient for closed blood sampling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310514435.7A CN116369879A (en) | 2023-05-09 | 2023-05-09 | Invasive pressure sensor convenient for closed blood sampling |
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| Publication Number | Publication Date |
|---|---|
| CN116369879A true CN116369879A (en) | 2023-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310514435.7A Pending CN116369879A (en) | 2023-05-09 | 2023-05-09 | Invasive pressure sensor convenient for closed blood sampling |
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| Country | Link |
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|---|---|---|---|---|
| CN202932907U (en) * | 2012-07-10 | 2013-05-15 | 北京迪玛克医药科技有限公司 | Invasive pressure sensor |
| US20170100577A1 (en) * | 2001-10-18 | 2017-04-13 | Bayer Healthcare Llc | Flow based pressure isolation and fluid delivery system including flow based pressure isolation and flow initiating mechanism |
| CN111202508A (en) * | 2020-01-14 | 2020-05-29 | 深圳安特医疗股份有限公司 | Invasive pressure sensor |
| CN112494023A (en) * | 2019-09-16 | 2021-03-16 | 深圳市惠心诺科技有限公司 | Closed invasive blood pressure monitoring equipment with blood sampling function |
| CN213465006U (en) * | 2020-05-23 | 2021-06-18 | 河南驼人医疗器械集团有限公司 | Invasive blood pressure monitoring blood sampling device of dosing |
| CN215687804U (en) * | 2021-09-08 | 2022-02-01 | 山东柏新医疗制品有限公司 | Perfusion valve of invasive blood pressure measurement pipeline |
-
2023
- 2023-05-09 CN CN202310514435.7A patent/CN116369879A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170100577A1 (en) * | 2001-10-18 | 2017-04-13 | Bayer Healthcare Llc | Flow based pressure isolation and fluid delivery system including flow based pressure isolation and flow initiating mechanism |
| CN202932907U (en) * | 2012-07-10 | 2013-05-15 | 北京迪玛克医药科技有限公司 | Invasive pressure sensor |
| CN112494023A (en) * | 2019-09-16 | 2021-03-16 | 深圳市惠心诺科技有限公司 | Closed invasive blood pressure monitoring equipment with blood sampling function |
| CN111202508A (en) * | 2020-01-14 | 2020-05-29 | 深圳安特医疗股份有限公司 | Invasive pressure sensor |
| CN213465006U (en) * | 2020-05-23 | 2021-06-18 | 河南驼人医疗器械集团有限公司 | Invasive blood pressure monitoring blood sampling device of dosing |
| CN215687804U (en) * | 2021-09-08 | 2022-02-01 | 山东柏新医疗制品有限公司 | Perfusion valve of invasive blood pressure measurement pipeline |
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