CN201870633U - Arterial sclerosis detector with stable deflation system - Google Patents

Abstract

The utility model discloses an arterial sclerosis detector with a stable deflation system, which comprises a miniature pressurized inflatable pump, a blood pressure oversleeve, a gas pressure sensor, a slow exhaust valve and an electromagnetic gas escape valve. The pressure gas output by the miniature pressurized inflatable pump is respectively conveyed to the blood pressure oversleeve, the gas pressure sensor by four passages, the slow exhaust valve and the electromagnetic gas escape valve; the slow exhaust valve consists of a valve body, a valve inlet connection tube and a valve outlet connection tube, wherein the valve body is a capillary tube made of inorganic nonmetallic materials; and both the valve inlet connection tube and the valve outlet connection tube adopt medical hoses. With the adoption of the arterial sclerosis detector, the problem of unstable deflation of the deflation system of the arterial sclerosis detector is solved, so that the truth and the reliability of measuring results are greatly improved. The arterial sclerosis detector has a simple structure, is easy to produce and process and has strong practicability.

Description

Atherosclerosis detector with stable deflation system

Technical field

This utility model relates to a kind of atherosclerosis detector, particularly a kind of atherosclerosis detector with stable deflation system.

Background technology

In the prior art, atherosclerosis detector is by the blood pressure oversleeve is inflated to the certain pressure value, slowly venting then, in deflation course, measure the pulse wave of human body, calculate the arteriosclerosis parameter according to cardiovascular fluid dynamics theory, elastic cavity model theory, judge the arteriosclerotic degree of human body with this.The formation of atherosclerosis detector blow-off system comprises: blood pressure oversleeve, gas pressure sensor, the miniature inflator pump of pressurization, air bleeding valve and electromagnetism gas bleeder valve at a slow speed.In measuring process, because human pulse signal is very faint, be easy to be interfered, make the whole pulse wave of being surveyed complete, truly, during the venting of blood pressure oversleeve pressure change is just required at the uniform velocity stable, so require very high to blood pressure oversleeve venting velocity control accuracy, to the employed venting of air bleeding valve at a slow speed rate request in the blow-off system is about 4mmHg/s in atmospheric pressure change speed generally, whether the venting speed of air bleeding valve is stable at a slow speed, determine the stability of blow-off system venting speed, will directly influence the verity and the accuracy of atherosclerosis detector measurement result.

The air bleeding valve at a slow speed that is adopted in the atherosclerosis detector blow-off system is a mechanical type air bleeding valve at a slow speed at present, is also referred to as the rubber air bleeding valve, is commonly called as " gaseous core " its structure as shown in Figure 1; It comprises: cabinet 1, gum sleeve 2, threaded metal tube 3 and metal nuts 4 have an air vent 5 on the gum sleeve 2.Through checking repeatedly, find that it has the following disadvantages:

1.. mechanical type is the unstability of air bleeding valve (structural defect) at a slow speed, so measurement result is unstable sometimes;

2.. the mechanical type employed material of air bleeding valve at a slow speed is plastics, rubber and metal, and the size of the air vent in the valve body has determined its venting speed, but the size of air vent has configured before product export, and user can't change; Reasons such as big, the easy oxidation of coefficient of linear thermal expansion owing to valve body material, cause the air vent size to change, make venting speed very unstable, so the venting speed of whole atherosclerosis detector blow-off system is difficult to control, cause whole pulse wave to change, cause untrue, the inaccuracy of arteriosclerosis parameter, even can't measure.

In Fig. 2, shown when temperature is respectively 10 ℃ and 50 ℃, the venting curve of blow-off system in the prior art, shown this mechanical type at a slow speed the venting speed of air bleeding valve influenced by ambient temperature etc. bigger, change at double sometimes, almost can't use after by 100 ℃ of high temperature ageings, service life is short;

3.. the mechanical type production cost of air bleeding valve at a slow speed is higher, and maintenance cost is higher behind the product export, all in various degree interference that is subjected to the problems referred to above of like product.

Summary of the invention

The purpose of this utility model is intended to overcome deficiency of the prior art, and a kind of atherosclerosis detector with stable deflation system is provided.

The technical solution of the utility model is:

A kind of atherosclerosis detector with stable deflation system comprises pressurization miniature inflator pump, blood pressure oversleeve, gas pressure sensor, air bleeding valve and electromagnetism gas bleeder valve at a slow speed; The pressed gas of the miniature inflator pump of described pressurization output divides four the tunnel to be sent to blood pressure oversleeve, gas pressure sensor, air bleeding valve and electromagnetism gas bleeder valve at a slow speed respectively, described air bleeding valve at a slow speed is made up of valve body, valve inlet connecting branch and valve outlet port connection tube, described valve body is the capillary tube that Inorganic Non-metallic Materials is made, and described valve inlet connecting branch, valve outlet port connection tube are flexible pipe for medical purpose.

The capillary tube that described Inorganic Non-metallic Materials is made is capillary glass tube or ceramic capillary.

Described capillary glass tube is high-boron-silicon glass capillary tube or quartz glass capillary.

Described flexible pipe for medical purpose is latex tubing or silica gel tube.

The outlet of described air bleeding valve at a slow speed is connected with the electromagnetism gas bleeder valve.

Compared with prior art, the beneficial effects of the utility model are:

(1) adopted atherosclerosis detector of the present utility model, the venting speed of its blow-off system is very stable, under the prerequisite that satisfies performance and function, has improved the verity and the reliability of measurement result greatly, reduce production and maintenance cost simultaneously, improved the service life of product;

(2) increase in the outlet of air bleeding valve at a slow speed in this utility model and connect an electromagnetism gas bleeder valve, can control the work process of whole atherosclerosis detector more accurately, make that the data of measuring are more accurate and reliable;

(3) simple in structure, production and processing is easy, and is practical.

Description of drawings

Fig. 1 is fast at a slow speed exhaust structure figure in the prior art;

Fig. 2 is the venting curve chart of blow-off system when 10 ℃ and 50 ℃ in the prior art;

Fig. 3 is this utility model embodiment blow-off system block diagram;

Fig. 4 is an air bleeding valve sectional structure chart at a slow speed in this utility model;

Fig. 5 is the venting curve of blow-off system and an ideal venting curve comparison diagram in this utility model under the equal conditions;

Fig. 6 be in this utility model blow-off system at 10 ℃, 50 ℃ and 100 ℃ of high temperature ageings curve chart of exitting after 24 hours.

Code name implication among the figure: 1-cabinet, 2-gum sleeve, threaded metal tube of 3-, 4-metal nuts, 5-air vent, the 6-miniature inflator pump that pressurizes, the 7-gas pressure sensor, 8-electromagnetism gas bleeder valve, 9-blood pressure oversleeve, 10-is air bleeding valve at a slow speed, 11-electromagnetism gas bleeder valve, 12-valve inlet connecting branch, 13-valve body, 14-valve outlet port connection tube.

The specific embodiment

Below in conjunction with accompanying drawing this utility model is further described.

Referring to Fig. 3, Fig. 4: originally have the atherosclerosis detector of stable deflation system, comprise the miniature inflator pump 6 of pressurization, blood pressure oversleeve 9, gas pressure sensor 7, air bleeding valve 10 and electromagnetism gas bleeder valve 8 at a slow speed; The pressed gas of the miniature inflator pump of described pressurization 6 outputs divides four the tunnel to be sent to blood pressure oversleeve 9, gas pressure sensor 7, air bleeding valve 10 and electromagnetism gas bleeder valve 8 at a slow speed respectively, described air bleeding valve at a slow speed 10 is made up of valve body 13, valve inlet connecting branch 12 and valve outlet port connection tube 14, described valve body 13 is capillary glass tubies made from the very little high-boron-silicon glass of coefficient of linear thermal expansion, and described valve inlet connecting branch 12, valve outlet port connection tube 14 are silica gel tubes; The outlet of described air bleeding valve at a slow speed 10 is connected with electromagnetism gas bleeder valve 11.

Among Fig. 5, shown venting curve and the ideal venting curve comparison diagram of blow-off system in this utility model under equal conditions.In concrete enforcement, the valve body of employed air bleeding valve at a slow speed 10 13 finds by screening experiment, i.e. the capillary tube of being made by Inorganic Non-metallic Materials-high-boron-silicon glass.Because high-boron-silicon glass has stable material quality, coefficient of linear thermal expansion very little (near zero), temperature-resistant characteristics, be highly suitable for the requirement of the stable control of high accuracy, the capillary glass tube of this material is applied in the blow-off system of existing atherosclerosis detector, make that the venting speed of blow-off system of atherosclerosis detector is very stable, the venting curve is influenced by ambient temperature little, the blow off pressure curve is near perfect condition, and very level and smooth, without any interference.

Among Fig. 6, shown that the blow-off system in this utility model is at 10 ℃, 50 ℃ and 100 ℃ of high temperature ageings curve of exitting after 24 hours, show because high-boron-silicon glass material thermal expansion coefficient capillaceous is little, so the venting velocity variations of the blow-off system of whole atherosclerosis detector is very faint, exhaust airstream is stable, and temperature can be ignored to the influence of measurement result.

When measuring the arteriosclerosis index, at first require is to certain volumetrical blood pressure oversleeve inflation, setting pressure is 180mmHg, the venting rate request is controlled at about 4mmHg/s, according to the relation that suffered on-way resistance is directly proportional with its length in slick capillary glass tube of gas in the hydrodynamics, and to select internal diameter by experiment be 0.03mm, external diameter is 6mm, length be the capillary glass tube of 10mm as valve body, select two joint silica gel tubes to be enclosed within the two ends of capillary glass tube as valve inlet connecting branch 12, valve outlet port connection tube 14.The glass capillary process technology is very ripe, so 10 processing of air bleeding valve at a slow speed of using capillary glass tube to constitute also just are easy to realize.

In addition, for the venting of more accurate control atherosclerosis detector, be connected with electromagnetism gas bleeder valve 11 in the outlet of air bleeding valve 10 at a slow speed.

Operation principle of the present utility model: at first electromagnetism gas bleeder valve 8, electromagnetism gas bleeder valve 11 are closed, 6 pairs of blood pressure oversleeves 9 of miniature inflator pump stop inflation after being inflated to the certain pressure value, open electromagnetism gas bleeder valve 11 then, gas in the blood pressure oversleeve 9 is by air bleeding valve 10 and electromagnetism gas bleeder valve 11 are slowly emitted at a slow speed, while gas pressure sensor 7 acquired signal, data acquisition is finished when being deflated to the certain pressure value by the time, opens electromagnetism gas bleeder valve 8, bleed off the tail gas of blood pressure oversleeve 9 the insides, work finishes.

This utility model has solved existing atherosclerosis detector blow-off system venting problem of unstable, makes the accuracy of measurement result that large increase arranged, and making has also had large increase in service life of product.This blow-off system also is applicable to the electric sphygmomanometer of oscillographic method measurement blood pressure.

Claims (5)

1. atherosclerosis detector with stable deflation system comprises pressurization miniature inflator pump (6), blood pressure oversleeve (9), gas pressure sensor (7), air bleeding valve (10) and electromagnetism gas bleeder valve (8) at a slow speed; The pressed gas of the miniature inflator pump of described pressurization (6) output divides four the tunnel to be sent to blood pressure oversleeve (9), gas pressure sensor (7), air bleeding valve (10) and electromagnetism gas bleeder valve (8) at a slow speed respectively, it is characterized in that: described air bleeding valve at a slow speed (10) is made up of valve body (13), valve inlet connecting branch (12) and valve outlet port connection tube (14), described valve body (13) is the capillary tube that Inorganic Non-metallic Materials is made, and described valve inlet connecting branch (12), valve outlet port connection tube (14) are flexible pipe for medical purpose.

2. the atherosclerosis detector with stable deflation system according to claim 1 is characterized in that: the capillary tube that described Inorganic Non-metallic Materials is made is capillary glass tube or ceramic capillary.

3. the atherosclerosis detector with stable deflation system according to claim 2 is characterized in that: described capillary glass tube is high-boron-silicon glass capillary tube or quartz glass capillary.

4. the atherosclerosis detector with stable deflation system according to claim 1 is characterized in that: described flexible pipe for medical purpose is latex tubing or silica gel tube.

5. the atherosclerosis detector with stable deflation system according to claim 1 is characterized in that: the outlet of described air bleeding valve at a slow speed (10) is connected with electromagnetism gas bleeder valve (11).

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