CN109621186B - Intensive care sampling device - Google Patents
Intensive care sampling device Download PDFInfo
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- CN109621186B CN109621186B CN201910081968.4A CN201910081968A CN109621186B CN 109621186 B CN109621186 B CN 109621186B CN 201910081968 A CN201910081968 A CN 201910081968A CN 109621186 B CN109621186 B CN 109621186B
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- 238000005070 sampling Methods 0.000 title claims abstract description 13
- 238000001802 infusion Methods 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 8
- 230000002265 prevention Effects 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000000844 anti-bacterial effect Effects 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 16
- 239000008280 blood Substances 0.000 abstract description 11
- 210000004369 blood Anatomy 0.000 abstract description 11
- 230000036772 blood pressure Effects 0.000 abstract description 8
- 238000010241 blood sampling Methods 0.000 abstract description 7
- 230000004872 arterial blood pressure Effects 0.000 abstract description 3
- 238000011010 flushing procedure Methods 0.000 description 7
- 210000001367 artery Anatomy 0.000 description 6
- 239000012530 fluid Substances 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 206010047139 Vasoconstriction Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004217 heart function Effects 0.000 description 1
- 238000001361 intraarterial administration Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 210000005245 right atrium Anatomy 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/22—Valves or arrangement of valves
- A61M39/223—Multiway valves
-
- 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
-
- 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
-
- 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
- A61B5/155—Devices specially adapted for continuous or multiple sampling, e.g. at predetermined intervals
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0208—Subcutaneous access sites for injecting or removing fluids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M2039/0202—Access sites for taking samples
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
- A61M2039/0258—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body for vascular access, e.g. blood stream access
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
- A61M2039/0264—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body with multiple inlets or multiple outlets
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Hematology (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Anesthesiology (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Cardiology (AREA)
- Gastroenterology & Hepatology (AREA)
- Vascular Medicine (AREA)
- Physiology (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The invention relates to an intensive care sampling device, which is characterized in that: the device comprises a switcher, an arterial catheter, a central venous catheter, a positive pressure joint and a medical pressure sensor, wherein the arterial catheter, the central venous catheter, the positive pressure joint and the medical pressure sensor are connected with the switcher; and blood sampling devices are arranged on the first infusion tube and the second infusion tube. The invention has the advantages that: a multi-channel switcher is adopted to be matched with an arterial catheter, a central venous catheter, a monitor and a positive pressure connector to form a multifunctional monitoring sampling device; the automatic blood pressure monitoring system can be used for carrying out switching monitoring on arterial blood pressure and central venous blood pressure and collecting blood samples, and more importantly, can avoid operation problems caused by multistage valves.
Description
Technical Field
The invention relates to an intensive care sampling device, in particular to an intensive care sampling device which has small pollution probability and can realize multi-catheter monitoring.
Background
Intensive care refers to intensive care treatment and care of various critical patients who are treated by modern monitoring and rescuing equipment by using various advanced medical technologies. To maximize the assurance of patient survival and subsequent quality of life. The indoor building and facility requirements in the intensive care unit are higher than those in the ordinary unit, so that critical patients can be monitored and rescuing in time to the greatest extent. In addition to the medical instruments necessary for the general ward, a plurality of monitoring instruments are often provided to monitor various vital signs of the patient in real time.
Blood pressure monitoring commonly used includes invasive arterial monitoring and central venous monitoring, wherein arterial blood pressure monitoring is a method for directly measuring intrA-Arterial blood pressure by placing an arterial catheter into an artery, and is suitable for monitoring shock, severe diseases, serious peripheral vasoconstriction, and patients with major surgery or life-threatening surgery in and after surgery, and other patients with high risk conditions; the central venous pressure monitoring is to monitor the pressure of the right atrium and the chest sections of the upper and lower vena cava, and can judge the comprehensive conditions of the blood volume, the cardiac function and the blood vessel tension of the patient.
In arterial or venous monitoring, a catheter is required to be placed in an artery or a central vein and connected to a related monitor to ensure the accuracy of data; meanwhile, a blood sampling device for collecting a blood gas sample of a patient is generally provided on the catheter.
At present, the conventional blood sampling device is carried out by connecting a plurality of three-way or four-way valves in series so as to carry out necessary operations such as blood sampling, air exhausting and the like, and has the advantages of difficult leakage of blood, safety and reliability, but can only meet the blood sampling requirement of a single catheter, and is limited in use; the number of the valves is more, more than two valves are usually used, the use is complex, and the technical requirements for puncture medical staff are very high; and some three-way valves also need to be used for sealing caps, so that the problem that the sealing caps fall off and pollute the environment easily occurs when the sealing caps are removed for corresponding operation, and the problem is troublesome.
Disclosure of Invention
The invention aims to provide an intensive care sampling device capable of reducing operation difficulty and realizing multi-catheter monitoring.
In order to solve the technical problems, the technical scheme of the invention is as follows: intensive care sampling device, its characterized in that: comprises a switcher, an arterial catheter, a central venous catheter, a positive pressure joint and a medical pressure sensor; the switcher comprises a shell, an inner core, a reset spring and an upper cover, wherein the shell is of a hollow cylindrical structure with an axis arranged vertically, a cylindrical accommodating cavity extending from the top end of the shell to the bottom of the shell along the vertical direction is arranged in the center of the shell, and a spring mounting column is arranged at the bottom of the cylindrical accommodating cavity; the outer circumferential surface of the shell is integrally formed with a first joint, a second joint, a third joint and a fourth joint which are communicated with the cylindrical accommodating cavity, and the first joint, the second joint, the third joint and the fourth joint are sequentially and uniformly distributed on the outer circumferential surface of the shell in an annular array; the inner core is arranged in a cylindrical accommodating cavity of the shell, the inner core is a cylinder which can be just embedded into the cylindrical accommodating cavity, a fifth joint is integrally formed in the center of the upper end face of the inner core, a positioning pit is formed in the center of the lower end face of the inner core, the inner core is provided with a horizontal first channel, a horizontal second channel and a horizontal third channel, the horizontal first channel and the horizontal second channel are positioned on the same horizontal plane, the axes of the horizontal first channel and the horizontal second channel are mutually perpendicular, the outer ends of the horizontal first channel and the horizontal second channel extend to the outer circumferential surface of the inner core, the inner ends of the horizontal first channel and the horizontal second channel are mutually communicated, the horizontal third channel is positioned right above the horizontal second channel, the axes of the horizontal third channel are mutually parallel, the outer end of the horizontal third channel extends to the outer circumferential surface of the inner core, and the inner end of the horizontal third channel is communicated with the fifth joint; the outer end of the horizontal third channel and the outer end of the horizontal second channel are reversely arranged on the outer circumferential surface of the inner core; the reset spring is arranged between the lower end face of the inner core and the shell, the upper end of the reset spring is embedded into the inner core positioning pit, and the lower end of the reset spring is sleeved on the spring mounting column; the upper cover is connected to the top end of the shell through threads, and the center of the upper cover is provided with a center hole through which the fifth joint passes; the inner core is respectively limited up and down in the shell through the upper cover and the spring mounting column, and when the inner core is limited up, the horizontal first channel and the horizontal second channel are positioned at the same height with the first joint, the second joint, the third joint and the fourth joint; when the inner core is positioned at the lower limit, the horizontal third channel, the first joint, the second joint, the third joint and the fourth joint are positioned at the same height; the first connector is communicated with the arterial catheter through a first infusion tube, the second connector is provided with a positive pressure connector for communication, the third connector is communicated with the central venous catheter through a second infusion tube, the fourth connector is directly connected with the medical pressure sensor, and the fifth connector is connected with the exhaust tube; and blood sampling devices are arranged on the first infusion tube and the second infusion tube.
The inner surface of the shell is provided with a layer of annular antibacterial sealing lining.
The upper and lower parts of the outer circumferential surface of the inner core are respectively provided with a sealing groove extending along the circumferential direction, and O-shaped sealing rings are embedded in the sealing grooves.
The positive pressure connector comprises a cover body, a seat body, an elastic plug and a lateral bending prevention spring; the cover body is of a hollow structure, the upper end of the cover body is of a luer female joint structure, the inner cavity of the cover body mainly comprises a small cylindrical upper cavity, a round table middle cavity and a large cylindrical lower cavity, the lower end face of the cover body is tightly attached to the upper end face of the base body and is fixedly connected with the base body, and a plurality of diversion trenches which extend along the axial direction of the cover body and are uniformly distributed are arranged on the inner wall of the large cylindrical lower cavity of the cover body; the device comprises a base body, wherein the center of the upper end of the base body is provided with a bulge extending into the lower cavity of the cover body, the side wall of the bulge is provided with a diversion hole, the upper end surface of the bulge is provided with a spring mounting part, the lower end of the base body is of a luer male base body structure, the center of an internal thread shell of the luer male base body is provided with an external conical sleeve, and a central channel of the external conical sleeve is communicated with the diversion hole of the bulge; the elastic plug mainly comprises a small cylindrical upper end, a circular truncated cone-shaped middle section and a hollow corrugated lower end, the elastic plug is arranged in the cover body, and the lower end of the elastic plug is arranged on a sleeve-shaped bulge in the center of the upper end of the seat body through an adhesive; and the lateral bending prevention spring is arranged on the convex spring installation part and is positioned in the elastic plug.
The invention has the advantages that: a multi-channel switcher is adopted to be matched with an arterial catheter, a central venous catheter, a monitor and a positive pressure connector to form a multifunctional monitoring sampling device; the automatic blood pressure monitoring system can not only switch and monitor arterial and central venous blood pressure, but also collect blood samples in the arteries or veins according to medical requirements, and more importantly, can avoid operation problems caused by multistage valves.
Drawings
Fig. 1 is a schematic diagram of an intensive care sampling device according to the present invention.
Fig. 2 is a schematic diagram of a switch structure according to the present invention.
Fig. 3 is a cross-sectional view taken along line A-A in fig. 2.
Fig. 4 is a cross-sectional view taken along line B-B in fig. 2.
Fig. 5 is a front view of a switch housing according to the present invention.
Fig. 6 is a top view of a switch housing according to the present invention.
Fig. 7 is a front view of the core of the switch of the present invention.
Fig. 8 is a cross-sectional view taken along line C-C in fig. 7.
Fig. 9 is a schematic view of the structure of the positive pressure joint in the present invention.
Description of the embodiments
The intensive care sampling device of the invention is shown in fig. 1, and comprises a switcher 1, an arterial catheter 2, a central venous catheter 3, a positive pressure joint 4 and a medical pressure sensor 10, wherein the arterial catheter 2, the central venous catheter 3, the positive pressure joint 4 and the medical pressure sensor 10 are connected with the switcher 1, the switcher 1 is provided with a first joint, a second joint, a third joint, a fourth joint and a fifth joint, the first joint is communicated with the arterial catheter 2 through a first infusion tube 5, the positive pressure joint 4 is arranged on the second joint, the third joint is communicated with the central venous catheter 3 through a second infusion tube 6, and the fifth joint is connected with an exhaust pipe 8; and blood collector 9 is installed on both the first infusion tube 5 and the second infusion tube 6. The medical pressure sensor 10 is provided with two interfaces which are communicated with each other and a signal output connector, one interface of the medical pressure sensor 10 is directly connected with a fourth connector, the other interface is connected with a continuous flushing device through a pressure flushing pipe 7, the connector signal output connector is connected with a monitor, and the interface connected with the fourth connector on the medical pressure sensor 10 is a female connector of a luer connector.
As shown in fig. 2, 3 and 4, the switch 1 comprises a housing 11, an inner core 12, a return spring 13 and an upper cover 14, and as shown in fig. 5 and 6, the housing 11 has a hollow cylindrical structure with an axis arranged vertically, the center of the housing has a cylindrical receiving cavity 115 extending from the top end of the housing to the bottom of the housing in the vertical direction, and the bottom of the cylindrical receiving cavity 115 has a spring mounting post 116; the outer circumferential surface of the shell 11 is integrally formed with a first joint 111, a second joint 112, a third joint 113 and a fourth joint 114 which are communicated with the cylindrical accommodating cavity, and the first joint 111, the second joint 112, the third joint 113 and the fourth joint 114 are sequentially and uniformly distributed on the outer circumferential surface of the shell 11 in an annular array; the inner surface of the housing 11 has an annular antimicrobial seal liner. In this embodiment, the fourth connector 114 is a male connector structure of a luer connector, so as to be directly connected with a female connector of the luer connector at one end of the medical pressure sensor.
As shown in fig. 7 and 8, the inner core 12 is disposed in the cylindrical accommodating cavity of the housing 11, the inner core 12 is a cylinder which can be just embedded in the cylindrical accommodating cavity, a fifth joint 124 is integrally formed in the center of the upper end face of the inner core, a positioning pit 125 is disposed in the center of the lower end face of the inner core 12, the inner core is provided with a horizontal first channel 121, a horizontal second channel 122 and a horizontal third channel 123, the horizontal first channel 121 and the horizontal second channel 122 are located on the same horizontal plane, the axes of the horizontal first channel 121 and the horizontal second channel 122 are perpendicular to each other, the outer ends of the horizontal first channel 121 and the horizontal second channel 122 extend to the outer circumferential face of the inner core, the inner ends of the horizontal first channel 121 and the horizontal second channel 122 are communicated with each other, the horizontal third channel 123 is located right above the horizontal second channel 122, the axes of the horizontal third channel 123 are parallel to each other, the outer end of the horizontal third channel 123 extends to the outer circumferential face of the inner core, and the inner end of the horizontal third channel 123 is communicated with the fifth joint 124; the outer end of the horizontal third passage 123 is disposed opposite to the outer end of the horizontal second passage 122 on the outer circumferential surface of the inner core 12; further, seal grooves 126 extending in the circumferential direction are formed in both the upper and lower portions of the outer circumferential surface of the core 12, and O-rings are fitted into the seal grooves 126.
The reset spring 13 is arranged between the lower end surface of the inner core 12 and the shell 11, the upper end of the reset spring 13 is embedded into the inner core positioning pit 125, and the lower end of the reset spring 13 is sleeved on the spring mounting column 116; the upper cover 14 is screwed to the top end of the housing 11, and the center of the upper cover 14 has a center hole through which the fifth joint 124 passes. In the invention, the inner core 12 is respectively limited up and down in the shell 11 through the upper cover 14 and the spring mounting column 116, and when the inner core 12 is limited up, the horizontal first channel 121 and the horizontal second channel 122 are positioned at the same height with the first joint 111, the second joint 112, the third joint 113 and the fourth joint 114; when the inner core 12 is positioned at the lower limit, the horizontal third channel 123 is positioned at the same height as the first joint 111, the second joint 112, the third joint 113 and the fourth joint 114.
In addition, in order to more conveniently adjust the position of the inner core 12, to realize the logical connection between each horizontal channel and each joint, an operation handle (not shown in the figure) is connected to the top fifth joint 124 of the inner core 12, and the operation handle may mark the positions of the horizontal first channel 121, the horizontal second channel 122, and the horizontal third channel 123 inside the inner core 12, and of course, the upper cover 14 may also be provided with indication contents corresponding to the marks on the operation handle.
As a more specific embodiment of the present invention, the positive pressure connector 4 in the present invention adopts an anti-deflection structure, so as to avoid abnormal operation caused by lateral bending when the elastic plug works: as shown in fig. 9, the positive pressure joint 4 includes a cover 41, a seat 42, an elastic plug 43, and a lateral bending prevention spring 44; the cover body 41 is of a hollow structure, the upper end of the cover body 41 is of a luer female joint structure, an inner cavity of the cover body 41 mainly comprises a small cylindrical upper cavity, a round table middle cavity and a large cylindrical lower cavity, the lower end face of the cover body 41 is tightly attached to the upper end face of the base body 42 and fixedly connected, and a plurality of diversion trenches which extend along the axial direction of the cover body and are uniformly distributed are arranged on the inner wall of the large cylindrical lower cavity of the cover body 41.
The seat body 42, the center of the upper end of the seat body 42 is provided with a bulge which stretches into the lower cavity of the cover body, the side wall of the bulge is provided with a diversion hole 45, the upper end face of the bulge is provided with a spring installation part, the lower end of the seat body is of a luer male seat body structure, the center of an internal thread shell of the luer male seat body is provided with an external conical sleeve, and a central channel 46 of the external conical sleeve is communicated with the bulge diversion hole 45.
The elastic plug 43 mainly comprises a small cylindrical upper end, a truncated cone-shaped middle section and a hollow bellows-shaped lower end, the elastic plug 43 is arranged in the cover 41, and the lower end of the elastic plug 43 is arranged on a bulge in the center of the upper end of the base 42 through an adhesive.
A lateral bending prevention spring 44, the lateral bending prevention spring 44 being mounted on the convex spring mounting portion and being located in the elastic plug 43.
Working principle:
before use, the medical pressure sensor needs to be zeroed, air in the first infusion tube 5 and the second infusion tube 6 is exhausted, in an initial state, the inner core 12 is in an upper limit under the action of the return spring 13, the position of the inner core 12 is adjusted by rotating and pressing the operating handle, so that the inner core 12 overcomes the elastic deformation force of the return spring 13 to move to a lower limit, the horizontal third channel 123 is communicated with the fourth connector 114, and the medical pressure sensor is zeroed through the fourth connector, the horizontal third channel, the fifth connector and the exhaust pipe; rotating the inner core 12 through the operating handle, so that the horizontal first channel 121 and the horizontal second channel 122 are respectively communicated with the first joint 111 and the fourth joint 114; then the continuous flushing device sequentially passes through the pressure flushing pipe 7, the medical pressure sensor 10, the fourth joint 114, the horizontal second channel 122, the horizontal first channel 121 and the first joint 111 to enter the first infusion pipe 5 at a certain pressure, so that air in the first infusion pipe 5 is discharged; correspondingly, the inner core 12 is rotated such that the horizontal first passage 121, the horizontal second passage 122 are respectively communicated with the fourth joint 114, the third joint 113; injecting the injection liquid through the flusher, and discharging the air in the second infusion tube 6; continuing to rotate the inner core 12 so that the horizontal first passage 121 and the horizontal second passage 122 are respectively communicated with the second joint 112 and the first joint 111, evacuating the air in the positive pressure joint 4 by using a syringe, and filling the syringe with the returned injection liquid; when the blood pressure is monitored, the inner core 12 is rotated according to the requirement, so that the first joint 111 and the fourth joint 114 are communicated or the fourth joint 114 and the third joint 113 are communicated, and the arterial blood pressure or the central venous blood pressure on the corresponding passage can be measured; when an artery is sampled, the inner core 12 is rotated to a corresponding position, the first connector 111 is communicated with the second connector 112, the arterial catheter, the first infusion tube, the switcher and the positive pressure connector are further communicated, a syringe is adopted to extract flushing fluid from the positive pressure connector, so that blood in the artery flows back to the first infusion tube until the blood flows back to the hemostix 9, the hemostix can be punctured by a syringe to sample blood, and after the blood sampling is finished, the extracted flushing fluid is injected again through the positive pressure connector, and the blood enters the artery under the action of the flushing fluid; when the central vein blood is collected, the inner core is correspondingly rotated, the second connector is communicated with the third connector, and the blood is collected in the same mode.
Claims (2)
1. An intensive care sampling device, characterized in that: comprises a switcher, an arterial catheter, a central venous catheter, a positive pressure joint and a medical pressure sensor; the switcher comprises a shell, an inner core, a reset spring and an upper cover,
the shell is of a hollow cylindrical structure with an axis arranged vertically, the center of the shell is provided with a cylindrical accommodating cavity extending from the top end of the shell to the bottom of the shell along the vertical direction, and the bottom of the cylindrical accommodating cavity is provided with a spring mounting column; the outer circumferential surface of the shell is integrally formed with a first joint, a second joint, a third joint and a fourth joint which are communicated with the cylindrical accommodating cavity, and the first joint, the second joint, the third joint and the fourth joint are sequentially and uniformly distributed on the outer circumferential surface of the shell in an annular array;
the inner core is arranged in a cylindrical accommodating cavity of the shell, the inner core is a cylinder which can be just embedded into the cylindrical accommodating cavity, a fifth joint is integrally formed in the center of the upper end face of the inner core, a positioning pit is formed in the center of the lower end face of the inner core, the inner core is provided with a horizontal first channel, a horizontal second channel and a horizontal third channel, the horizontal first channel and the horizontal second channel are positioned on the same horizontal plane, the axes of the horizontal first channel and the horizontal second channel are mutually perpendicular, the outer ends of the horizontal first channel and the horizontal second channel extend to the outer circumferential surface of the inner core, the inner ends of the horizontal first channel and the horizontal second channel are mutually communicated, the horizontal third channel is positioned right above the horizontal second channel, the axes of the horizontal third channel are mutually parallel, the outer end of the horizontal third channel extends to the outer circumferential surface of the inner core, and the inner end of the horizontal third channel is communicated with the fifth joint; the outer end of the horizontal third channel and the outer end of the horizontal second channel are reversely arranged on the outer circumferential surface of the inner core;
the reset spring is arranged between the lower end face of the inner core and the shell, the upper end of the reset spring is embedded into the inner core positioning pit, and the lower end of the reset spring is sleeved on the spring mounting column;
the upper cover is connected to the top end of the shell through threads, and the center of the upper cover is provided with a center hole through which the fifth joint passes;
the inner core is respectively limited up and down in the shell through the upper cover and the spring mounting column, and is positioned at the upper limit
When the first and second horizontal channels are positioned at the same height with the first, second, third and fourth joints; when the inner core is positioned at the lower limit, the horizontal third channel, the first joint, the second joint, the third joint and the fourth joint are positioned at the same height;
the first connector is communicated with the arterial catheter through a first infusion tube, the second connector is provided with a positive pressure connector for communication, the third connector is communicated with the central venous catheter through a second infusion tube, the fourth connector is directly connected with the medical pressure sensor, and the fifth connector is connected with the exhaust tube; the first infusion tube and the second infusion tube are respectively provided with a hemostix;
the inner surface of the shell is provided with a layer of annular antibacterial sealing lining;
the upper and lower parts of the outer circumferential surface of the inner core are respectively provided with a sealing groove extending along the circumferential direction, and O-shaped sealing rings are embedded in the sealing grooves.
2. The intensive care sampling device of claim 1, wherein: the positive pressure connector comprises a cover body, a seat body, an elastic plug and a lateral bending prevention spring;
the cover body is of a hollow structure, the upper end of the cover body is of a luer female joint structure, the inner cavity of the cover body mainly comprises a small cylindrical upper cavity, a round table middle cavity and a large cylindrical lower cavity, the lower end face of the cover body is tightly attached to the upper end face of the base body and is fixedly connected with the base body, and a plurality of diversion trenches which extend along the axial direction of the cover body and are uniformly distributed are arranged on the inner wall of the large cylindrical lower cavity of the cover body;
the device comprises a base body, wherein the center of the upper end of the base body is provided with a bulge extending into the lower cavity of the cover body, the side wall of the bulge is provided with a diversion hole, the upper end surface of the bulge is provided with a spring mounting part, the lower end of the base body is of a luer male base body structure, the center of an internal thread shell of the luer male base body is provided with an external conical sleeve, and a central channel of the external conical sleeve is communicated with the diversion hole of the bulge;
the elastic plug mainly comprises a small cylindrical upper end, a circular truncated cone-shaped middle section and a hollow corrugated lower end, the elastic plug is arranged in the cover body, and the lower end of the elastic plug is arranged on a sleeve-shaped bulge in the center of the upper end of the seat body through an adhesive; and the lateral bending prevention spring is arranged on the convex spring installation part and is positioned in the elastic plug.
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| CN109621186B true CN109621186B (en) | 2023-10-27 |
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| CN109907748B (en) * | 2019-05-20 | 2024-02-06 | 山东大学齐鲁医院 | Invasive blood pressure measuring device convenient for blood sample collection |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2002175A1 (en) * | 1988-12-30 | 1990-06-30 | John A.R. Kater | Blood sampling device |
| US5048537A (en) * | 1990-05-15 | 1991-09-17 | Medex, Inc. | Method and apparatus for sampling blood |
| US5425374A (en) * | 1992-06-03 | 1995-06-20 | Hideo Ueda | Device and method for expiratory air examination |
| CA2346043A1 (en) * | 1998-10-26 | 2000-05-04 | Jagmohanbir Singh Dillon | Sampling in blood collection |
| WO2001039826A1 (en) * | 1998-06-03 | 2001-06-07 | Nippon Sherwood Medical Industries Ltd. | Medical cock |
| CN202526157U (en) * | 2012-03-31 | 2012-11-14 | 深圳市库珀科技发展有限公司 | Pressure set with blood collection system |
| CN207412156U (en) * | 2017-03-07 | 2018-05-29 | 姜金花 | Improved invasive monitoring of blood pressure pipe valve |
| CN109237181A (en) * | 2017-07-11 | 2019-01-18 | 北京康斯特仪表科技股份有限公司 | adjustable connecting device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012141113A1 (en) * | 2011-04-11 | 2012-10-18 | 株式会社村田製作所 | Valve and fluid control device |
| CN209865029U (en) * | 2019-01-28 | 2019-12-31 | 黄智勇 | Intensive care sampling device |
-
2019
- 2019-01-28 CN CN201910081968.4A patent/CN109621186B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2002175A1 (en) * | 1988-12-30 | 1990-06-30 | John A.R. Kater | Blood sampling device |
| US5048537A (en) * | 1990-05-15 | 1991-09-17 | Medex, Inc. | Method and apparatus for sampling blood |
| US5425374A (en) * | 1992-06-03 | 1995-06-20 | Hideo Ueda | Device and method for expiratory air examination |
| WO2001039826A1 (en) * | 1998-06-03 | 2001-06-07 | Nippon Sherwood Medical Industries Ltd. | Medical cock |
| CA2346043A1 (en) * | 1998-10-26 | 2000-05-04 | Jagmohanbir Singh Dillon | Sampling in blood collection |
| CN202526157U (en) * | 2012-03-31 | 2012-11-14 | 深圳市库珀科技发展有限公司 | Pressure set with blood collection system |
| CN207412156U (en) * | 2017-03-07 | 2018-05-29 | 姜金花 | Improved invasive monitoring of blood pressure pipe valve |
| CN109237181A (en) * | 2017-07-11 | 2019-01-18 | 北京康斯特仪表科技股份有限公司 | adjustable connecting device |
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| CN109621186A (en) | 2019-04-16 |
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