阅读说明：本技术 采血阀和有创压力传感器 (Blood sampling valve and invasive pressure sensor ) 是由 王五星 于敬军 王德忍 于 2019-10-11 设计创作，主要内容包括：本发明公开一种采血阀和有创压力传感器,其中该采血阀用于有创压力传感器,所述有创压力传感器包括三通阀,该采血阀包括采血阀主体,所述采血阀主体内部形成有管路通道,所述采血阀主体于管路通道的入口处形成有用于与所述三通阀连接的第一连接头,于所述管路通道的出口处形成用于与被监测者血管连通的第二连接头,所述采血阀主体还设有采血端,所述采血端的端面设有连通所述管路通道的采血口；和密封胶塞,所述密封胶塞固定于所述采血端,并密封所述采血口,采血装置刺穿所述密封胶塞对被监测者采血。本发明技术方案旨在优化有创压力传感器的结构,可通过有创压力传感器对被监测者进行采血,减少被监测者的痛苦。(The invention discloses a blood sampling valve and an invasive pressure sensor, wherein the blood sampling valve is used for the invasive pressure sensor, the invasive pressure sensor comprises a three-way valve, the blood sampling valve comprises a blood sampling valve main body, a pipeline channel is formed in the blood sampling valve main body, a first connector used for being connected with the three-way valve is formed at the inlet of the pipeline channel of the blood sampling valve main body, a second connector used for being communicated with a blood vessel of a monitored person is formed at the outlet of the pipeline channel, the blood sampling valve main body is also provided with a blood sampling end, and the end surface of the blood sampling end is provided with a blood sampling port communicated with the pipeline channel; and the sealing rubber plug is fixed at the blood sampling end and seals the blood sampling port, and the blood sampling device pierces the sealing rubber plug to sample blood for a monitored person. The technical scheme of the invention aims to optimize the structure of the invasive pressure sensor, and the blood can be collected from the monitored person through the invasive pressure sensor, so that the pain of the monitored person is reduced.)

1. A blood collection valve for an invasive pressure sensor, the invasive pressure sensor comprising a three-way valve, the blood collection valve comprising:

the blood sampling valve comprises a blood sampling valve main body, a pipeline channel is formed in the blood sampling valve main body, a first connector used for being connected with a three-way valve is formed at the inlet of the pipeline channel of the blood sampling valve main body, a second connector used for being communicated with a blood vessel of a monitored person is formed at the outlet of the pipeline channel of the blood sampling valve main body, a blood sampling end is further arranged on the blood sampling valve main body, and a blood sampling port communicated with the pipeline channel is formed in the end face of the blood sampling end; and

the sealing rubber plug is fixed at the blood sampling end and seals the blood sampling port, and the blood sampling device pierces the sealing rubber plug to sample blood for a monitored person.

2. The blood collection valve of claim 1, wherein the blood collection end comprises a fixing portion, and the sealing rubber plug is fixedly connected with the fixing portion.

3. The blood collection valve according to claim 2, wherein a mounting cavity is formed inside the fixing portion, the blood collection port is formed in a cavity bottom wall of the mounting cavity, and a surface of the sealing rubber plug abuts against a cavity wall of the mounting cavity.

4. The blood collection valve of claim 3, wherein the blood collection end further comprises a limiting portion, the limiting portion and the fixing portion are connected at an end portion away from the blood collection valve main body, the limiting portion is bent towards the mounting cavity, and the limiting portion abuts against a surface, away from the blood collection port, of the sealing rubber plug so as to prevent the sealing rubber plug from being separated from the mounting cavity.

5. The blood collection valve of claim 3, wherein the inner diameter defining the mounting cavity is D1, the outer diameter of the sealing rubber plug is D2, and the relationship D2 > D1 is satisfied; and/or

The depth of the installation cavity is defined to be H1, the thickness of the sealing rubber plug is H2, and the relation H2 > H1 is met.

6. The blood collection valve of claim 4, wherein the sealing plug has a thickness in the range of 3mm to 5 mm.

7. The blood collection valve of any one of claims 1 to 6, further comprising a fixing base connected to a surface of the blood collection valve body facing away from the blood collection end, the fixing base being provided with a fixing hole, the blood collection valve being fixed by engagement of a connector with the fixing hole.

8. The blood collection valve of claim 7, wherein the retaining base further defines a retaining aperture recessed into a surface of the blood collection valve body facing away from the blood collection end.

9. The blood collection valve according to any one of claims 1 to 6, wherein the material of the blood collection valve is transparent plastic, and the material of the sealing rubber plug is silica gel.

10. An invasive pressure sensor, comprising a pressure testing assembly, a three-way valve and a blood sampling valve according to any one of claims 1 to 9, wherein the three-way valve connects the pressure testing assembly and a first connector of the blood sampling valve, respectively, and a second connector of the blood sampling valve communicates with a blood vessel to be monitored.

Technical Field

The invention relates to the technical field of medical treatment, in particular to a blood sampling valve and an invasive pressure sensor with the same.

Background

The invasive pressure sensor is connected with a blood vessel of a human body, so that pressure testing liquid in a catheter of the invasive pressure sensor is communicated with the blood vessel, the pressure of the blood vessel can be transmitted through fluid, the invasive pressure sensor detects the pressure change of the pressure testing liquid, converts the real-time pressure change into dynamic waveforms through specific calculation, and displays the dynamic waveforms on a monitoring device to obtain various physiological parameters of systolic pressure, diastolic pressure, mean arterial pressure and the like of the blood pressure of a tested person, thereby providing objective basis for clinical diagnosis, treatment and prognosis estimation of diseases. However, the existing invasive pressure sensor is not provided with a blood sampling valve, and if a patient needs to be bled, the blood vessel of the patient needs to be punctured, so that the pain of the monitored person is increased, the probability of infection of the monitored person is increased due to multiple puncturing, and the health of the monitored person is not facilitated.

The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.

Disclosure of Invention

The invention mainly aims to provide a blood sampling valve, aiming at optimizing the structure of an invasive pressure sensor, and reducing the pain of a monitored person by sampling blood for the monitored person through the invasive pressure sensor.

In order to achieve the above object, the present invention provides a blood sampling valve for an invasive pressure sensor, the invasive pressure sensor including a three-way valve, the blood sampling valve including:

the blood sampling valve comprises a blood sampling valve main body, a pipeline channel is formed in the blood sampling valve main body, a first connector used for being connected with a three-way valve is formed at the inlet of the pipeline channel of the blood sampling valve main body, a second connector used for being communicated with a blood vessel of a monitored person is formed at the outlet of the pipeline channel of the blood sampling valve main body, a blood sampling end is further arranged on the blood sampling valve main body, and a blood sampling port communicated with the pipeline channel is formed in the end face of the blood sampling end; and

the sealing rubber plug is fixed at the blood sampling end and seals the blood sampling port, and the blood sampling device pierces the sealing rubber plug to sample blood for a monitored person.

In an embodiment of the present invention, the blood sampling end includes a fixing portion, and the sealing rubber plug is fixedly connected to the fixing portion.

In an embodiment of the invention, an installation cavity is formed inside the fixing part, the blood sampling port is arranged on the cavity bottom wall of the installation cavity, and the surface of the sealing rubber plug is abutted against the cavity wall of the installation cavity.

In an embodiment of the invention, the blood sampling end further includes a limiting portion, the limiting portion is connected with an end portion of the fixing portion, which is away from the blood sampling valve main body, the limiting portion is bent towards the installation cavity, and the limiting portion is abutted against a surface, which is away from the blood sampling port, of the sealing rubber plug so as to prevent the sealing rubber plug from being separated from the installation cavity.

In an embodiment of the invention, the inner diameter of the installation cavity is defined as D1, the outer diameter of the sealing rubber plug is defined as D2, and the relation D2 > D1 is satisfied; and/or

The depth of the installation cavity is defined to be H1, the thickness of the sealing rubber plug is H2, and the relation H2 > H1 is met.

In an embodiment of the present invention, the thickness of the sealing rubber plug ranges from 3mm to 5 mm.

In an embodiment of the present invention, the blood sampling valve further includes a fixing seat, the fixing seat is connected to a surface of the blood sampling valve main body away from the blood sampling end, the fixing seat is provided with a fixing hole, and the blood sampling valve is fixed by matching of a connecting piece and the fixing hole.

In an embodiment of the present invention, the fixing seat is further concavely provided with a positioning hole on a surface of the blood sampling valve main body departing from the blood sampling end.

In an embodiment of the present invention, the blood sampling valve is made of transparent plastic, and the sealing rubber plug is made of silica gel.

The invention also provides an invasive pressure sensor which comprises a pressure testing component, a three-way valve and the blood sampling valve, wherein the three-way valve is respectively connected with the pressure testing component and a first connector of the blood sampling valve, and a second connector of the blood sampling valve is communicated with the monitored blood vessel.

According to the technical scheme, the blood sampling valve is arranged on the invasive pressure sensor, the blood sampling valve main body is provided with the pipeline channel, the inlet of the pipeline channel is communicated with other parts of the invasive pressure sensor, the outlet of the pipeline channel is communicated with the blood vessel of the monitored person, and the blood sampling end is communicated with the pipeline channel through the blood sampling port, so that the monitored person can perform blood sampling operation through the blood sampling port. And a sealing rubber plug is fixed at the blood sampling end to seal the blood sampling port. Under the normal condition, sealed plug seals the blood sampling mouth to isolated external air prevents that the atmospheric pressure from leaking outward, and impedance external thalli gets into in the pipeline passageway. When the blood sampling operation needs to be carried out, the blood sampling device pierces the sealing rubber plug through the puncture needle and extracts the blood of the monitored person through the pipeline channel, so that the blood vessel of the monitored person is prevented from being pierced again in the blood sampling process, and the pain of the monitored person is reduced. After the blood drawing is completed, the sealing rubber plug can be automatically sealed by the puncture position of the blood drawing device, the blood drawing port is continuously sealed, and the sealing rubber plug can be punctured for a plurality of times. By using the blood sampling valve in the technical scheme of the invention, repeated puncture on a monitored person can be avoided, the pain of the monitored person is reduced, and the infection problem caused by repeated puncture is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of one embodiment of a blood collection valve of the present invention;

FIG. 2 is a cross-sectional view of the blood collection valve of FIG. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Blood sampling valve	1511	Blood sampling port
10	Blood sampling valve body	1513	Limiting part
				11	First connector	17	Fixed seat
111	Pipeline channel	171	Fixing hole
				13	Second connector	173	Locating hole
15	Blood sampling end	30	Sealing rubber plug
				151	Fixing part

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B," including either the A or B arrangement, or both A and B satisfied arrangement. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a blood collection valve 100.

Referring to fig. 1 and 2, a blood collection valve 100 in one implementation of the present invention is for an invasive pressure sensor (not shown) including a three-way valve (not shown), the blood collection valve 100 including:

the blood sampling valve comprises a blood sampling valve main body 10, wherein a pipeline channel 111 is formed inside the blood sampling valve main body 10, a first connector 11 used for being connected with the three-way valve is formed at an inlet of the pipeline channel 111 of the blood sampling valve main body 10, a second connector 13 used for being communicated with a blood vessel of a monitored person is formed at an outlet of the pipeline channel 111, the blood sampling valve main body 10 is further provided with a blood sampling end 15, and a blood sampling port 1511 communicated with the pipeline channel 111 is formed in the end face of the blood sampling end 15; and a sealing rubber plug 30, wherein the sealing rubber plug 30 is fixed at the blood sampling end 15 and seals the blood sampling port 1511, and a blood sampling device (not shown) pierces the sealing rubber plug 30 to sample blood for a monitored person.

In the technical scheme of the invention, the blood sampling valve 100 is arranged on the invasive pressure sensor, the blood sampling valve main body 10 is provided with the pipeline channel 111, the inlet of the pipeline channel 111 is connected with other parts (three-way valves) of the invasive pressure sensor, the outlet of the pipeline channel 111 is communicated with the blood vessel of a monitored person, and the blood sampling end 15 is communicated with the pipeline channel 111 through the blood sampling port 1511. In this way, the monitored person who can be monitored through the blood collection port 1511 performs the blood collection operation. A sealing rubber plug 30 is further fixed to the blood collection end 15 to seal the blood collection port 1511. Under the normal condition, sealing plug 30 seals up blood taking port 1511 to isolated external air prevents that the atmospheric pressure from leaking outward, and impedance external thalli gets into in the pipeline passageway 111. When the blood sampling operation is required, the blood sampling device pierces the sealing rubber plug 30 through a puncture needle (not shown), and extracts the blood of the monitored person through the pipeline channel 111, so that the blood vessel of the monitored person is prevented from being pierced again in the blood sampling process, and the pain of the monitored person is reduced. After the blood drawing is completed, the sealing rubber plug 30 can be automatically sealed at the puncture position of the blood drawing device, the blood collection port 1511 is sealed, and the sealing rubber plug 30 can be punctured for a plurality of times. By using the blood sampling valve 100 in the technical scheme of the invention, repeated puncture on a monitored person can be avoided, the pain of the monitored person is reduced, and the infection problem caused by repeated puncture on the blood vessel of the monitored person is reduced.

It should be noted that, the sealing rubber plug 30 is arranged to seal the blood collection port 1511 of the blood collection valve 100, and when the blood collection operation is required, the puncture outfit on the blood collection device punctures the sealing rubber plug 30, so that the blood collection port 1511 is communicated with the blood collection device to realize the blood collection operation. The sealing rubber plug 30 can be punctured for a plurality of times, and after blood sampling is finished, the punctured sealing rubber plug 30 can heal automatically and continues to seal the blood sampling port 1511. The blood vessel puncture-proof monitoring device is simple in structure and convenient to operate, puncture of blood vessels of a monitored person can be avoided, and pain of the monitored person is reduced.

Referring to fig. 1 and 2, in an embodiment of the present invention, the blood collection end 15 includes a fixing portion 151, and the sealing rubber plug 30 is fixedly connected to the fixing portion 151.

In the technical solution of an embodiment of the present invention, the fixing portion 151 is disposed at an end of the blood collection end 15 away from the blood collection valve main body 10, and the fixing portion 151 may be a fixing buckle (not shown) protruding from a side wall of the blood collection end 15, a connecting thread (not shown) disposed on a side wall of the blood collection end 15, or another fixing structure. It can be understood that, the fixing portion 151 may be integrated with the blood sampling valve main body 10, or may not be an integrated structure, and the fixing portion 151 is used to fix the sealing rubber plug 30 at the blood sampling end 15, so as to ensure the sealing of the sealing rubber plug 30 to the blood sampling port 1511, and isolate the external air and germs from entering the pipeline channel 111 through the blood sampling port 1511.

Referring to fig. 1 and 2, in an embodiment of the present invention, a mounting cavity (not labeled) is formed inside the fixing portion 151, the blood collection port 1511 is disposed on a cavity bottom wall of the mounting cavity, and a surface of the sealing rubber plug 30 abuts against a cavity wall of the mounting cavity.

In the technical scheme of an embodiment of the present invention, the fixing portion 151 extends along an end surface of the blood sampling end 15 in a direction away from the blood sampling valve main body 10, and the fixing portion 151 and the blood sampling end 15 enclose to form an installation cavity with an opening, the opening of the installation cavity is arranged away from the blood sampling valve main body 10, and the blood sampling port 1511 is arranged on a cavity bottom wall of the installation cavity. The sealing rubber plug 30 is plugged into the mounting cavity from the opening of the mounting cavity and is abutted and fixed with the wall of the mounting cavity, so that the sealing rubber plug 30 is fixed.

In some embodiments, the sealing rubber plug 30 can be fixed to the wall of the installation cavity by an adhesive. In some embodiments, the surface of the sealing rubber plug 30 is further provided with a rib (not shown) or a bump (not shown) to increase the friction force between the sealing rubber plug 30 and the wall of the installation cavity, so as to increase the fixation firmness of the sealing rubber plug 30.

In some embodiments, the inner wall of the cavity of the mounting cavity may further be formed with a fixing structure (not shown), or may also be a structure such as a limiting convex rib (not shown) or a limiting convex point (not shown), and the limiting convex rib or the limiting convex point can improve the fixing stability of the sealing rubber plug 30, and prevent the sealing rubber plug 30 from sliding out of the mounting cavity.

In an embodiment of the present invention, the inner diameter of the installation cavity is defined as D1, the outer diameter of the sealing rubber plug 30 is defined as D2, and the relationship D2 > D1 is satisfied; and/or

The depth of the installation cavity is defined to be H1, the thickness of the sealing rubber plug 30 is H2, and the relation H2 > H1 is satisfied.

In the technical scheme of the embodiment of the invention, the thickness dimension of the sealing rubber plug 30 is larger than the depth dimension of the installation cavity, and the outer diameter dimension of the sealing rubber plug 30 is larger than the inner diameter dimension of the installation cavity. So, can ensure to be the state of butt by the wall of sealed plug 30 and installation cavity, prevent that the air from getting into the blood taking port 1511 from the assembly space between installation cavity and sealed plug 30 to pollute blood taking port 1511 and pipeline passageway 111. Generally, the thickness of the sealing rubber plug 30 is in a range of 3mm, 3.5mm, 4mm, 4.5mm or 5mm, and may be any size between 3mm and 5mm, and the sealing rubber plug 30 with the thickness in the range can satisfy the requirement of maintaining good sealing performance after being punctured for many times.

Referring to fig. 1 and 2, in an embodiment of the present invention, the blood collection end 15 further includes a limiting portion 1513, the limiting portion 1513 is connected to an end of the fixing portion 151 away from the blood collection valve main body 10, the limiting portion 1513 is bent toward the inner side of the mounting cavity, and the limiting portion 1513 abuts against a surface of the sealing rubber plug 30 away from the blood collection port 1511 to prevent the sealing rubber plug 30 from separating from the mounting cavity.

In the technical scheme of the embodiment of the invention, the blood sampling valve main body 10 and the fixing portion 151 of the blood sampling valve 100 are integrally formed, and the limiting portion 1513 is formed by hot-melting one end of the fixing portion 151, which is away from the blood sampling valve main body 10, after the sealing rubber plug 30 is mounted, and then fixing the hot-melted rubber to be bent towards the inside of the mounting cavity to form the limiting portion 1513, so that the sealing rubber plug 30 is blocked in the mounting cavity, and the fixing firmness of the sealing rubber plug 30 is further improved. In addition, the stopper 1513 is formed after molding, so that it is not necessary to adjust a mold for the blood collection valve 100, thereby simplifying the production. It should be noted that the outer surface of the limiting portion 1513 is arc-shaped, and the cross section of the inner surface is inclined, so that the limiting portion does not scratch the operator, and effective limiting can be achieved.

Referring to fig. 1 and 2, in an embodiment of the present invention, the blood collection valve 100 further includes a fixing base 17, the fixing base 17 is connected to a surface of the blood collection valve main body 10 facing away from the blood collection end 15, the fixing base 17 is provided with a fixing hole 171, and the blood collection valve 100 is fixed by a connector in cooperation with the fixing hole 171.

In the technical scheme of the embodiment of the invention, the fixing seat 17 is made of plastic, and the fixing seat 17 and the blood sampling valve main body 10 can be integrally formed by injection molding. The fixing seat 17 has a substantially square structure, and the blood collection valve body 10 is protruded from the surface of the fixing seat 17. The fixing holes 171 are formed at both sides of the blood collection valve body 10, and the entire blood collection valve 100 may be fixed to a test rack (not shown) or a wall using a coupling member in cooperation with the fixing.

The connecting member (not shown) may be a positioning plate (not shown) protruding from the test jig (not shown), or may have another positioning structure. Fixed orifices 171 are rectangular shape, also are rectangular shape with the locating plate of fixed orifices 171 adaptation, so, can guarantee the intensity of locating plate, improve fixed stability.

In some embodiments, the number of the fixing holes 171 is two, and the two fixing holes 171 are located at both sides of the lancet valve body 10, so that the balance of the lancet valve 100 can be improved. Each of the fixing holes 171 extends along the length direction of the fixing base 17 and is disposed at an angle to the pipe passage 111. It can be understood that the included angle between the length direction of the fixing hole 171 and the projection of the pipeline channel 111 on the fixing seat 17 is 90 degrees, so that the fixing seat 17 and the test jig can be conveniently fixed, the first connector 11 and the second connector 13 cannot be influenced in the fixing process, and the layout is reasonable.

Referring to fig. 2, in an embodiment of the present invention, the fixing seat 17 is further recessed with a positioning hole 173 on a surface of the blood collection valve body 10 facing away from the blood collection end 15.

In the technical solution of an embodiment of the present invention, the fixing base 17 is provided with the positioning hole 173, the opening of the positioning hole 173 is further provided with a guiding surface (not labeled), the guiding surface can be a rounded corner or a beveled corner, and the guiding surfaces are all gradually decreased from the opening of the positioning hole 173 to the inner side of the positioning hole 173, so as to guide the positioning structure on the test frame to be inserted into the positioning hole 173. When the blood sampling valve 100 is fixed, the blood sampling valve 100 and the positioning structure can be quickly positioned, and the fixing efficiency is improved. In addition, the thickness of the blood sampling valve main body 10 and one end of the fixing seat 17 can be effectively reduced due to the arrangement of the positioning hole 173, and the quality problem caused by a thick rubber area is avoided.

In an embodiment of the present invention, the blood sampling valve 100 is made of transparent plastic, so that it is convenient to observe the inside of the pipeline 111 during blood sampling operation.

The sealing rubber plug 30 is made of silica gel, and the silica gel has high strength, stable performance and no harm to human bodies.

The invention also provides an invasive pressure sensor which comprises a pressure testing component, a three-way valve and the blood sampling valve 100, wherein the three-way valve is respectively connected with the pressure testing component and the first connector 11 of the blood sampling valve 100, and the second connector 13 of the blood sampling valve 100 is communicated with the monitored blood vessel.

The invention further provides an invasive pressure sensor, which comprises a pressure testing component, a three-way valve and a blood sampling valve 100, the specific structure of the blood sampling valve 100 refers to the above embodiments, and the invasive pressure sensor adopts all technical solutions of all the above embodiments, so that the invasive pressure sensor at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.

The first connector 11 of the blood sampling valve 100 is connected to the three-way valve through a catheter, the second connector 13 of the blood sampling valve 100 is connected to an indwelling needle (not shown) which is communicated with the blood vessel of the monitored person, and the pressure testing component (not shown) is connected to one end of the three-way valve which is far away from the blood sampling valve 100. The pressure testing component is internally provided with a chip (not shown), and the chip converts the pressure change condition in the catheter into an electric signal and transmits the electric signal to a display terminal (not shown) so as to obtain various physiological parameters of the blood pressure of the monitored person. When a blood sampling operation is required, the three-way valve is operated to cut off the passage between the pressure testing unit and the blood sampling valve 100 to ensure that the blood sampling device collects blood.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.