CN210520960U - Radial artery blood pressure detection equipment - Google Patents

Abstract

The embodiment of the utility model discloses radial artery blood pressure check out test set, a serial communication port, radial artery blood pressure check out test set includes the wrist strap, the wrist strap is used for the cover to establish on waiting to detect person's wrist, the wrist strap is provided with the depressed part, wherein the depressed part is corresponding to the ulnar artery setting, and then avoids right in the testing process the ulnar artery produces and presses down, and the influence of the blood flow fluctuation of ulnar artery when pressing down the ulnar artery in the testing process to radial artery blood pressure check can be avoided from this, improves radial artery blood pressure check's exactness effectively.

Description

Radial artery blood pressure detection equipment

Technical Field

The embodiment of the utility model provides a biomedical engineering field especially relates to a radial artery blood pressure check out test set.

Background

The existing equipment for detecting arterial blood pressure is generally used for measuring the blood pressure of a finger artery, and compared with a finger, the equipment for detecting arterial blood pressure has a complicated wrist blood vessel structure and not only has a radial artery but also an ulnar artery.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a main technical problem who solves provides a radial artery blood pressure check out test set, presses radial artery and ulnar artery's problem simultaneously when can solving traditional arterial blood pressure check out test set and detect wrist radial artery blood pressure.

In order to solve the above technical problem, an embodiment of the present invention adopts a technical solution that: the utility model provides a radial artery blood pressure check out test set, this radial artery blood pressure check out test set include the wrist strap for the cover is established on waiting to detect person's wrist, and the wrist strap is provided with the depressed part, and wherein the depressed part sets up corresponding to the ulnar artery, and then avoids producing in the testing process and presses down the ulnar artery.

Wherein, radial artery blood pressure check out test set further includes the gasbag, and wherein the gasbag sets up in the local position that corresponds with the radial artery of wrist strap, and then carries out local the pressing to the radial artery in the testing process.

Wherein, the radial artery blood pressure detection device comprises a bracket, wherein the bracket is provided with a containing part which is used for allowing the back side of the wrist to be placed and supported in the containing part.

Wherein the accommodating portion is further provided to allow placement and support of a back side of a palm of the person to be detected within the accommodating portion.

Wherein the radial artery blood pressure detection device further comprises a photoelectric detection circuit which is arranged to detect the volume of the blood vessel of the radial artery at the pressing position of the air bag.

The photoelectric detection circuit is a reflection type photoelectric detection circuit and comprises an infrared light-emitting element, an infrared photosensitive element and a signal processing circuit, wherein the infrared light-emitting element is used for generating infrared detection light, the infrared photosensitive element is used for detecting the infrared detection light reflected by a wrist, and the optical signal processing circuit processes the infrared detection light detected by the infrared photosensitive element into a blood vessel volume.

The infrared light-emitting elements are distributed around the array of the infrared light-sensitive elements in a dispersed manner.

Wherein, radial artery blood pressure check out test set further includes air pump, intake pipe, outlet duct, first solenoid valve, second solenoid valve and pressure sensor, and wherein the air pump is through intake-tube connection gasbag, and first solenoid valve sets up in the intake pipe, and then adjusts the airflow in the intake pipe, and the gasbag is connected to the outlet duct, and the second solenoid valve sets up on the outlet duct, and then adjusts the airflow in the outlet duct, and pressure sensor is used for detecting the pressure in the gasbag.

Wherein, radial artery blood pressure check out test set further includes master control circuit, and master control circuit connects photoelectric detection circuit, air pump, first solenoid valve, second solenoid valve and pressure sensor respectively.

The main control circuit regulates the pressure in the air bag by controlling the first electromagnetic valve and the second electromagnetic valve, determines the volume of the blood vessel of the radial artery in the unloaded state according to the detection result of the photoelectric detection circuit, further controls the first electromagnetic valve and the second electromagnetic valve to track the target value by taking the volume of the blood vessel in the unloaded state as the target value, and outputs the pressure value in the air bag detected by the pressure sensor in the tracking process.

The embodiment of the utility model provides a beneficial effect is: the utility model discloses in the method, radial artery blood pressure check out test set includes the wrist strap for the cover is established on waiting to detect person's wrist, is provided with the depressed part on the wrist strap, and wherein the depressed part corresponds the ulnar artery setting, and then avoids pressing to the ulnar artery production in the testing process, and the influence of the blood flow fluctuation of ulnar artery when can avoiding pressing the ulnar artery in the testing process to radial artery blood pressure detection improves radial artery blood pressure detection's exactness effectively from this.

Drawings

Fig. 1 is a schematic structural view of a radial artery blood pressure detecting apparatus according to a first embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the wrist band of the detecting apparatus shown in FIG. 1;

FIG. 3 is a schematic diagram of the structure of an infrared photosensor and an infrared light-emitting element in the detecting device shown in FIG. 1;

fig. 4 is a schematic structural diagram of a radial artery blood pressure detecting apparatus according to a second embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, fig. 1 is a schematic structural view of a radial artery blood pressure detecting device according to a first embodiment of the present invention, and fig. 2 is a schematic cross-sectional view of a wrist band of the detecting device shown in fig. 1. Referring to fig. 1 and 2, a radial artery blood pressure detecting apparatus 10 according to a first embodiment of the present invention includes: wrist strap 101 for the cover is established and is waited to detect on person's the wrist, and wrist strap 101 is provided with depressed part 1011, and wherein depressed part 1011 is corresponding to the ulnar artery setting, and then avoids pressing to the ulnar artery production in the testing process.

Specifically, as shown in fig. 2, in one application example, the wrist band 101 may be a fixing band made of a flexible material and provided with a hook and loop fastener, and the recess 1011 may be made of a hard material and embedded in the wrist band 101 and disposed corresponding to the ulnar artery.

Referring further to fig. 2, the radial artery blood pressure detecting apparatus 10 further includes an air bag 102, wherein the air bag 102 is disposed at a local position of the wrist strap 101 corresponding to the radial artery, so as to locally press the radial artery during the detection process.

The lower section of the radial artery, namely the radial artery at the wrist part, is only covered by skin and fascia, belongs to a superficial artery, and is suitable for detecting the radial artery blood pressure at the wrist part by adopting a noninvasive method in clinic.

Specifically, as shown in fig. 2, in an application example, the wristband 101 may be made of a flexible material and provided with a fixing strap of a hook and loop fastener, and the air bag 102 is made of a transparent material and is disposed at a local position of the wristband 101; when the radial artery blood pressure is detected, firstly, the wrist of a person to be tested is turned outwards, the palm is upward, the wrist is exposed, the air bag 102 is placed at the local position corresponding to the radial artery, and then the magic tape on the binding band is pasted, so that the wrist strap 101 is sleeved on the wrist of the person to be tested. The corresponding local positions of the radial arteries of the left hand and the right hand are all at positions, close to the lower part of the thumb, of the wrist, and specifically, positions with obvious pulse beats can be found through manual pressing; the position of the ulnar artery on the wrist of the left hand and the wrist of the right hand are both located on the other side of the wrist relative to the radial artery, so that the concave portion 1011 is located on the other side of the air bag 102 on the wrist band 101, and the specific position thereof can be set according to the actual situation, and is not limited specifically here. Of course, in other application examples, the wrist band 101 may be fixed by a cloth strip or may be fixed by an elastic band, and is not limited herein.

In the detection process, when 102 is inflated into the air bag, the wrist strap 101 is tightened, the gap still exists between the skin at the position corresponding to the ulnar artery and the surface of the wrist strap 101 due to the sunken part 1011, and the surface of the wrist strap 101 cannot be in direct contact with the skin at the position corresponding to the ulnar artery, so that the ulnar artery is prevented from being pressed in the detection process, and the correctness of the radial artery blood pressure detection result is improved.

With further reference to fig. 1, the radial artery blood pressure detection device 10 further includes a photodetection circuit 103, the photodetection circuit 103 being arranged to detect a volume of a blood vessel of the radial artery at a pressing position of the balloon 101.

The detection of the volume of the blood vessel is mainly measured by means of transmission/reflection of infrared light. Based on the basic law of light absorption, when infrared light of a fixed wavelength irradiates a detection site, a part of the light is absorbed by hemoglobin in blood. The more hemoglobin in the blood, the more infrared light is absorbed and the less light reaches the receiver tube location. Because the photoelectric characteristics of tissues such as muscles, skin and the like are not obviously changed in the detection process, when the heart contracts, the blood flow of radial artery blood vessels is large, the hemoglobin content is high, more infrared light is absorbed, and the light intensity obtained by a receiving tube is weak; during diastole, the blood flow of the radial artery blood vessel is small, the hemoglobin content is low, the absorbed infrared light is less, and the light intensity obtained by the receiving tube is strong. Thus, the size of the cross-sectional area of the blood flow exiting the blood vessel can be characterized by the intensity of the infrared light obtained by the receiving tube. In addition, the structure of the wrist is more complex relative to the finger, bones and the like exist in the wrist part, infrared light is not easy to transmit, and therefore the wrist part can detect the volume of the blood vessel by adopting an infrared light reflection mode.

Specifically, as shown in fig. 1 and fig. 3, the photodetection circuit 103 is a reflective photodetection circuit, and includes an infrared light emitting element 1031, an infrared photosensor 1032 and a signal processing circuit 1033, wherein the infrared light emitting element 1031 is configured to generate infrared probe light, the infrared photosensor 1032 is configured to detect infrared probe light reflected by the wrist, and the optical signal processing circuit 1033 processes the infrared probe light detected by the infrared photosensor 1032 into a blood vessel volume.

As shown in fig. 3, in an application example, the infrared light emitting elements 1031 are constant current driven infrared light emitting diodes with fixed wavelengths, the infrared photosensitive elements 1032 are phototransistors, wherein the infrared photosensitive elements 1032 are multiple and arranged in an array manner, and the infrared light emitting elements 1031 are multiple and dispersedly arranged around the array of the infrared photosensitive elements 1032. Of course, in other application examples, the infrared light emitting element 1031 and the infrared photosensor 1032 may adopt other elements, and are not limited specifically herein.

Further referring to fig. 1, radial artery blood pressure detecting apparatus 10 further includes an air pump 104, an air inlet pipe 105, an air outlet pipe 106, a first electromagnetic valve 107, a second electromagnetic valve 108 and a pressure sensor 109, wherein air pump 104 is connected to air bag 102 through air inlet pipe 105, first electromagnetic valve 107 is disposed on air inlet pipe 105, and then the air flow in air inlet pipe 105 is adjusted, air outlet pipe 106 is connected to air bag 102, second electromagnetic valve 108 is disposed on air outlet pipe 106, and then the air flow in air outlet pipe 106 is adjusted, and pressure sensor 109 is used for detecting the pressure in air bag 102.

Specifically, in the above application example, the air pump 104 is connected to the air bag 102 through the air inlet pipe 105 and is used for inflating the air bag 102, the first electromagnetic valve 107 is disposed on the air inlet pipe 105, the inflation speed of the air pump 104 on the air bag 102 can be adjusted through the switch of the first electromagnetic valve 107, so as to adjust the air flow in the air inlet pipe 105, the air outlet pipe 106 is connected to the air bag 102, the second electromagnetic valve 108 is disposed on the air outlet pipe 106, the deflation speed of the air bag 102 can be adjusted through the switch of the second electromagnetic valve 108, so as to adjust the air flow in the air outlet pipe 106, and the adjustment of the pressure in the air bag 102 can be achieved; the pressure sensor 109 is provided at one end of the intake pipe 105 near the airbag 102, and detects the pressure inside the airbag 102.

As shown in fig. 1, the radial artery blood pressure detecting apparatus 10 further includes a main control circuit 110, and the main control circuit 110 is respectively connected to the photoelectric detection circuit 103, the air pump 104, the first electromagnetic valve 107, the second electromagnetic valve 108, and the pressure sensor 109.

The main control circuit 110 regulates the pressure in the air bag 102 by controlling the first electromagnetic valve 107 and the second electromagnetic valve 108, determines the volume of the blood vessel of the radial artery in the unloaded state according to the detection result of the photoelectric detection circuit 103, further controls the first electromagnetic valve 107 and the second electromagnetic valve 108 to track the target value by taking the volume of the blood vessel in the unloaded state as the target value, and outputs the pressure value in the air bag 102 detected by the pressure sensor 109 in the tracking process.

Specifically, in the initial stage of detecting the radial artery blood pressure, since the normal blood pressure value of the human body generally does not exceed 200mmHg, the blood pressure value of 200mmHg can be used as an initial threshold value; the main control circuit 110 controls the first electromagnetic valve 107 to open, the air pump 104 inflates the air bag 102 through the air inlet pipe 105, and controls the opening degrees of the first electromagnetic valve 107 and the second electromagnetic valve 108 through a proportional-derivative-integral control mode, namely a PID control mode, so that the pressure in the air bag 102 tends to an initial threshold value, wherein the larger the opening degree of the first electromagnetic valve 107 is, the larger the pressure in the air bag 102 is, and the larger the opening degree of the second electromagnetic valve 108 is, the smaller the pressure in the air bag 102 is; in the process of increasing the pressure in the balloon 102, the volume of the blood vessel detected by the photoelectric detection circuit 103 reaches a maximum value, at this time, the radial artery blood vessel is in an unloaded state, the main control circuit 110 records the pressure value of the pressure sensor 109 at this time, because the main control circuit 110 continuously controls the opening degrees of the first electromagnetic valve 107 and the second electromagnetic valve 108, at this time, the pressure value in the balloon 102 detected by the pressure sensor 109 has certain fluctuation, therefore, the main control circuit 110 takes the pressure average value in a preset range, for example, the pressure average value in 5 seconds, as the pressure target value in the radial artery unloaded state, wherein the preset range can be set according to actual requirements, and is not specifically limited herein; then, the main control circuit 110 controls the opening degrees of the first electromagnetic valve 107 and the second electromagnetic valve 108 to reduce the pressure in the balloon 102 from the initial threshold value to the pressure target value or below, and then controls the opening degrees of the first electromagnetic valve 107 and the second electromagnetic valve 108 in a PID control manner to make the pressure in the balloon 102 approach to the pressure target value, the main control circuit 110 records the volume of the blood vessel detected by the photoelectric detection circuit 103 at the time, and similarly, since the main control circuit 110 continuously controls the opening degrees of the first electromagnetic valve 107 and the second electromagnetic valve 108, the volume of the blood vessel detected by the photoelectric detection circuit 103 at the time has certain fluctuation, the main control circuit 110 takes the average value of the volume of the blood vessel in a preset range as the volume target value in the radial artery unloaded state.

In the detection stage of the radial artery blood pressure, the main control circuit 110 controls the opening degrees of the first electromagnetic valve 107 and the second electromagnetic valve 108 in a PID control manner according to the volume target value, so that the volume of the blood vessel detected by the photoelectric detection circuit 103 tends to the volume target value, and simultaneously, the pressure sensor 109 continuously records the pressure value in the detected air bag 102, namely, the detected radial artery blood pressure changing along with time.

In the above embodiment, the radial artery blood pressure detection device includes the wrist strap and the air bag, and the wrist strap is provided with the depression portion, wherein the depression portion is arranged corresponding to the ulnar artery, so as to avoid pressing the ulnar artery in the detection process, thereby avoiding the influence of blood flow fluctuation of the ulnar artery on the radial artery blood pressure detection when the ulnar artery is pressed in the detection process, and effectively improving the accuracy of the radial artery blood pressure detection; the gasbag sets up in the local position that corresponds with radial artery of wrist strap, and then carries out the part to radial artery and press at the testing process, can avoid directly pressing the ulnar artery when examining from this, further reduces the influence that the blood flow fluctuation of ulnar artery detected radial artery blood pressure.

In other embodiments, in order to ensure that the wrist is everted without being depressed, and further improve the accuracy of the radial artery blood pressure detection, a support can be arranged on the back side of the wrist to support the wrist.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a radial artery blood pressure detecting apparatus according to a third embodiment of the present invention. Fig. 4 is similar to fig. 1 in structure and will not be described herein, except that the radial artery blood pressure detecting device 20 further includes a stent 211.

As shown in fig. 4, the holder 211 is provided with a receiving portion 2111 for allowing the back side of the wrist to be placed and supported in the receiving portion 2111.

Specifically, when detecting the blood pressure of the radial artery of the wrist, if the wrist is sunken inwards, the radial artery is prone to sinking, which increases the error of the detection result of the blood pressure of the radial artery, and therefore, in order to improve the accuracy of the detection result, the wrist should be turned outwards. In this embodiment, the radial artery blood pressure detecting device 20 includes a bracket 211, the bracket 211 is made of hard material, and is provided with a receiving portion 2111, the receiving portion 2111 is protruded from the bracket 211, when detecting the radial artery blood pressure, the back side of the wrist is allowed to be placed and supported in the receiving portion 2111, so as to ensure that the wrist is turned outwards without being concaved inwards, and the accuracy of the radial artery blood pressure detection is improved.

Further, as shown in fig. 4, the accommodating portion 2111 is provided to allow the placement and support of the back side of the palm of the subject in the accommodating portion 2111, so that the palm and the wrist of the subject are placed on the holder 211 with ease, reducing discomfort to the subject due to long-time testing.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims (9)

1. The radial artery blood pressure detection device is characterized by comprising a wrist strap, wherein the wrist strap is used for being sleeved on a wrist of a person to be detected and provided with a sunken part, the sunken part is arranged corresponding to an ulnar artery so as to avoid pressing the ulnar artery in the detection process, the radial artery blood pressure detection device further comprises an air bag, the air bag is arranged at a local position of the wrist strap corresponding to the radial artery so as to locally press the radial artery in the detection process, the sunken part is arranged at an interval with the air bag along the circumferential direction of the wrist strap, the wrist strap is made of a flexible material, the sunken part is made of a hard material, is embedded in the wrist strap and corresponds to the ulnar artery, when the air bag is inflated, the wrist strap is tightened, and the sunken part enables a gap to exist between skin corresponding to the position of the ulnar artery and the surface of the wrist strap, the wristband surface does not directly contact the skin at the location of the corresponding ulnar artery.

2. The radial artery blood pressure detection device of claim 1, wherein the radial artery blood pressure detection device comprises a cradle, wherein the cradle is provided with a receptacle for allowing placement and support of the dorsal side of the wrist within the receptacle.

3. The radial artery blood pressure detection device of claim 2, wherein the receptacle is further configured to allow placement and support of a dorsal side of a palm of the person to be detected within the receptacle.

4. The radial artery blood pressure detection device of claim 1, further comprising a photo detection circuit configured to detect a volume of a blood vessel of the radial artery at a pressing position of the balloon.

5. The radial artery blood pressure detection device according to claim 4, wherein the photodetection circuit is a reflective photodetection circuit comprising an infrared light emitting element for generating infrared probe light, an infrared photosensor for detecting the infrared probe light reflected by the wrist, and a signal processing circuit for processing the infrared probe light detected by the infrared photosensor into the blood vessel volume.

6. The radial artery blood pressure detection device of claim 5, wherein the plurality of infrared photosensitive elements are arranged in an array, and the plurality of infrared light emitting elements are dispersedly arranged around the array of infrared photosensitive elements.

7. The radial artery blood pressure detection device according to claim 4, further comprising an air pump, an air inlet pipe, an air outlet pipe, a first electromagnetic valve, a second electromagnetic valve and a pressure sensor, wherein the air pump is connected to the air bag through the air inlet pipe, the first electromagnetic valve is disposed on the air inlet pipe to adjust the air flow in the air inlet pipe, the air outlet pipe is connected to the air bag, the second electromagnetic valve is disposed on the air outlet pipe to adjust the air flow in the air outlet pipe, and the pressure sensor is used for detecting the pressure in the air bag.

8. The radial artery blood pressure detection device according to claim 7, further comprising a main control circuit, wherein the main control circuit is respectively connected to the photoelectric detection circuit, the air pump, the first solenoid valve, the second solenoid valve, and the pressure sensor.

9. The radial artery blood pressure detection device according to claim 8, wherein the main control circuit adjusts the pressure in the balloon by controlling the first solenoid valve and the second solenoid valve, determines the blood vessel volume of the radial artery in the unloaded state according to the detection result of the photoelectric detection circuit, further controls the first solenoid valve and the second solenoid valve to track the target value by using the blood vessel volume in the unloaded state as the target value, and outputs the pressure value in the balloon detected by the pressure sensor during tracking.

Images