CN116421222A - Limb end microcirculation monitoring device - Google Patents

Limb end microcirculation monitoring device Download PDF

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Publication number
CN116421222A
CN116421222A CN202310695481.1A CN202310695481A CN116421222A CN 116421222 A CN116421222 A CN 116421222A CN 202310695481 A CN202310695481 A CN 202310695481A CN 116421222 A CN116421222 A CN 116421222A
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Prior art keywords
temperature
monitoring
finger
microcirculation
heat dissipation
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Granted
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CN202310695481.1A
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CN116421222B (en
Inventor
周然
秦瑶
尹万红
曾学英
张述蓉
吕操
刘俊廷
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Chengdu Huamu Chuanglian Technology Co ltd
West China Hospital of Sichuan University
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Chengdu Huamu Chuanglian Technology Co ltd
West China Hospital of Sichuan University
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/06—Measuring blood flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4272—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue
    • A61B8/4281—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue characterised by sound-transmitting media or devices for coupling the transducer to the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/44—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device
    • A61B8/4444—Constructional features of the ultrasonic, sonic or infrasonic diagnostic device related to the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/54—Control of the diagnostic device
    • A61B8/546—Control of the diagnostic device involving monitoring or regulation of device temperature
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Veterinary Medicine (AREA)
  • Medical Informatics (AREA)
  • Biophysics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Hematology (AREA)
  • Acoustics & Sound (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)

Abstract

The invention discloses an extremity microcirculation monitoring device, which belongs to the field of microcirculation monitoring, and comprises an ultrasonic probe and a fingerstall, wherein the output end of the ultrasonic probe extends into a containing cavity of the fingerstall; the temperature control assembly comprises a temperature sensor, a temperature control component and a heat dissipation assembly. According to the invention, the temperature sensor is used for detecting the monitoring temperature, the temperature control component is used for receiving the monitoring temperature sent by the temperature sensor, and the control signal is generated and sent to the heat dissipation component according to the monitoring temperature and the preset target temperature, so that the heat dissipation component works according to the control signal, thereby realizing the microcirculation monitoring of the limb end in the constant-temperature environment and improving the accuracy of the monitoring result.

Description

Limb end microcirculation monitoring device
Technical Field
The invention relates to the field of microcirculation monitoring, in particular to an acromioclavicular monitoring device.
Background
Currently, the means capable of directly visually assessing microcirculation are mainly to study microcirculation by microscopic video technology, which can directly observe the characteristics of microvascular perfusion and its changes, including Orthogonal Polarization Spectroscopy (OPS), lateral flow dark field (SDF) and Incident Dark Field (IDF) imaging techniques, etc. Since the camera of microscopic video technology can only be applied to thin epithelial surface covered organs, e.g., sublingual areas, it has limitations that make it difficult to use in routine clinical practice.
In recent years, noninvasive ultrasonic technology is gradually introduced into clinical application, so that serious doctors enter a more deeply understood level for disease evaluation of patients, and hemodynamic pathophysiological changes of the patients can be evaluated through evaluation of the ultrasonic technology and analysis of serious thinking. However, if the current ultrasonic monitoring device continuously monitors a local part, the local temperature will rise, so that the monitoring result cannot truly reflect the systemic circulation condition.
Disclosure of Invention
The main purpose of the invention is that: the utility model provides a tip microcirculation monitoring device, aims at solving among the prior art ultrasonic monitoring device and is used for the tip microcirculation monitoring to have the technical problem that monitoring result accuracy is low.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides an extremity microcirculation monitoring device which comprises an ultrasonic probe and a fingerstall, wherein the output end of the ultrasonic probe extends into a containing cavity of the fingerstall;
the temperature control assembly comprises a temperature sensor, a temperature control part and a heat dissipation assembly;
the temperature sensor is used for detecting and monitoring temperature;
the temperature control component is respectively connected with the temperature sensor and the heat dissipation component and is used for receiving the monitoring temperature sent by the temperature sensor, generating a control signal according to the monitoring temperature and a preset target temperature and sending the control signal to the heat dissipation component so that the heat dissipation component works according to the control signal.
Optionally, in the above-mentioned limb end microcirculation monitoring device, a radiation light source and a finger die are arranged in the finger stall, and the finger die is formed by solidifying a liquid coupling agent through irradiation of the radiation light source; the output end of the ultrasonic probe is abutted with the outer surface of the finger die, or the output end of the ultrasonic probe is positioned in the finger die; the heat dissipation assembly acts on the finger die.
Optionally, in the above-mentioned limb end microcirculation monitoring device, the heat dissipation assembly includes a water cooling pipe disposed in the finger die, and the water cooling pipe is connected with the water pump and the water tank respectively.
Optionally, in the above-mentioned acral microcirculation monitoring device, the whole of water-cooled tube is arc structure, and sets up around the circumference of finger.
Optionally, in the above-mentioned limb end microcirculation monitoring device, the water-cooled tubes are multiple, and multiple water-cooled tubes are arranged at intervals along the extending direction of the fingerstall.
Optionally, in the above-mentioned limb end microcirculation monitoring device, the device further includes a main controller, where the main controller is respectively connected with the temperature sensor and the ultrasonic probe, and is configured to receive a monitored temperature sent by the temperature sensor, and stop the operation of the ultrasonic probe when the monitored temperature is greater than a temperature upper limit value.
Optionally, in the above-mentioned limb end microcirculation monitoring device, the feed opening of the fingerstall is movably connected with a cover body.
Optionally, in the above-mentioned extremity microcirculation monitoring device, further include a fixing component, the fixing component includes a palm fixing piece and a restraint strap, two ends of the restraint strap are respectively connected with the palm fixing piece and the fingerstall.
The technical scheme provided by the invention has the following advantages or at least realizes the following technical effects:
according to the limb end microcirculation monitoring device, the temperature sensor is used for detecting the monitoring temperature, the temperature control component is used for receiving the monitoring temperature sent by the temperature sensor, and the control signal is generated and sent to the heat dissipation component according to the monitoring temperature and the preset target temperature, so that the heat dissipation component works according to the control signal, limb end microcirculation monitoring under a constant temperature environment is realized, and accuracy of a monitoring result is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of a first embodiment of an acromioclavicular monitoring device according to the present invention;
FIG. 2 is a cross-sectional view of a first embodiment of an acromioclavicular monitoring device according to the present invention;
FIG. 3 is a schematic diagram of a second embodiment of an apparatus for monitoring acral microcirculation according to the present invention;
reference numerals illustrate: 1. a finger stall; 2. an ultrasonic probe; 3. a radiation source; 4. a receiving chamber; 5. a heat dissipation assembly; 6. palm fixing piece; 7. restraining straps.
The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the embodiment of the present invention, all directional indications (such as up, down, left, right, front, and rear … …) are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a certain specific posture (as shown in the drawings), and if the specific posture is changed, the directional indication is changed accordingly.
In the present disclosure, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a device or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such device or system. Without further limitation, an element defined by the phrase "comprising … …" does not exclude that an additional identical element is present in a device or system comprising the element. The meaning of "and/or" as it appears throughout includes three parallel schemes, taking "a and/or B" as an example, including a scheme, or B scheme, or a scheme where a and B meet simultaneously.
In the present invention, unless explicitly specified and limited otherwise, the terms "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be either a fixed connection or a removable connection or integrated; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; the communication between the two elements can be realized, or the interaction relationship between the two elements can be realized.
The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present invention.
Example 1
Referring to fig. 1 to 2, fig. 1 is a schematic block diagram of a first embodiment of an apparatus for monitoring an acromioclavicular according to the present invention, and fig. 2 is a schematic structural diagram of the first embodiment of the apparatus for monitoring an acromioclavicular according to the present invention; the embodiment provides an acromioclavicular monitoring device. The acromioclavicular monitoring device may include: the ultrasonic probe 2 and the finger stall 1, wherein the output end of the ultrasonic probe 2 extends into the accommodating cavity 4 of the finger stall 1; the temperature control assembly comprises a temperature sensor, a temperature control part and a heat dissipation assembly 5; the temperature sensor is used for detecting and monitoring temperature; the temperature control component is respectively connected with the temperature sensor and the heat dissipation component 5, and is used for receiving the monitored temperature sent by the temperature sensor, generating a control signal according to the monitored temperature and a preset target temperature, and sending the control signal to the heat dissipation component 5 so that the heat dissipation component 5 works according to the control signal.
Specifically, the extremity is a finger or a toe, the finger stall 1 is a glove body with an opening for the finger to extend into, and when in use, a liquid couplant or a coupling pad is put into the finger stall 1, and the ultrasonic probe 2 is contacted with the finger through the liquid couplant or the coupling pad.
It can be appreciated that, in order to facilitate the fixation of the ultrasonic probe 2 and the recycling of the finger stall 1, the finger stall 1 is made of hard materials.
Specifically, the heat dissipation component 5 may be one of a semiconductor refrigeration sheet, an air-cooled heat dissipation component or a water-cooled heat dissipation component.
In one example, the heat sink 5 is a semiconductor refrigeration sheet with a refrigeration surface that acts on a liquid couplant or coupling pad.
In one example, the heat dissipating component 5 is an air-cooled heat dissipating component, for example, a heat dissipating opening is formed in the finger stall 1, a fan is built in, and heat is taken away through air flow, for example, a heat dissipating fin is arranged in the finger stall 1, and the heat dissipating fin is in contact with a liquid coupling agent or a coupling gasket.
In one example, the ultrasonic probe 2 is one of a low-frequency ultrasonic probe, a medium-frequency ultrasonic probe, a high-frequency ultrasonic probe, or an ultrasonic probe.
Preferably, the frequency of the ultrasonic probe is greater than 20MHz.
Preferably, the heat dissipation assembly 5 comprises a water cooling pipe arranged in the finger die, and the water cooling pipe is respectively connected with the water pump and the water tank.
It can be appreciated that the water cooling heat dissipation assembly has the advantage of high heat dissipation efficiency compared with the air cooling heat dissipation assembly, and does not affect the liquid coupling agent.
Specifically, the monitored temperature may be the temperature of the accommodating cavity 4 of the finger stall 1, and it is understood that, to directly obtain the local temperature of the limb end, the monitored temperature may also be the temperature of the finger, the couplant or the coupling pad.
According to the limb end microcirculation monitoring device, the temperature sensor is used for detecting the monitoring temperature, the temperature control component is used for receiving the monitoring temperature sent by the temperature sensor, and a control signal is generated and sent to the heat dissipation component 5 according to the monitoring temperature and the preset target temperature, so that the heat dissipation component 5 works according to the control signal, limb end microcirculation monitoring under a constant temperature environment is realized, and accuracy of a monitoring result, stability and reliability of a continuous monitoring result are improved.
Example two
Referring to fig. 2 and 3, fig. 3 is a schematic structural view of a second embodiment of an acromiocirculatory monitoring device according to the invention; on the basis of the first embodiment, the present embodiment further proposes an acromioclavicular monitoring device.
Further, a radiation light source 3 and a finger die are arranged in the finger stall 1, and the finger die is formed by irradiating and solidifying a liquid coupling agent through the radiation light source 3; the output end of the ultrasonic probe 2 is abutted with the outer surface of the finger die, or the output end of the ultrasonic probe 2 is positioned in the finger die; the heat dissipation assembly 5 acts on the finger die.
Specifically, the liquid coupling agent comprises an acoustic gel and a photoinitiator, wherein the photoinitiator is also called a photosensitizer or a photo-curing agent (photocuring agent), and is a compound capable of absorbing energy with a certain wavelength in an ultraviolet light region (250-420 nm) or a visible light region (400-800 nm) to generate free radicals, cations and the like so as to initiate polymerization, crosslinking and curing of the monomer. When the liquid couplant is in liquid state, the liquid couplant is added into the fingerstall 1, the radiation light source 3 provides energy, the liquid couplant is solidified to generate a fingerstall, and the fingers of a user and the ultrasonic probe 2 are wrapped together, or the outer edge surface of the fingerstall is abutted with the output end of the ultrasonic probe 2. Notably, when the finger die is wrapping the ultrasound probe 2 and the finger at the same time, the ultrasound probe 2 and the monitoring location are relatively stationary, which reduces interference of patient activity with the imaging effect, e.g., the finger die is separated from the ultrasound probe 2.
In one example, the radiation source 3 is an ultraviolet lamp.
In one example, the heat dissipation assembly 5 is a water-cooled heat dissipation assembly, and the water-cooled tube of the water-cooled heat dissipation assembly is abutted with the finger die, or the finger die wraps the water-cooled tube, so as to further improve the heat exchange efficiency.
In one example, the liquid couplant is introduced into the finger cuff 1 from an opening of the finger cuff 1 into which a finger is inserted.
In one example, the top of the fingerstall 1 is provided with a hole body, and after the finger stretches into the fingerstall 1, the liquid couplant can be led into the fingerstall 1 from the hole body, so that convenience is improved.
Preferably, the water-cooled tube is integrally in an arc-shaped structure and is arranged around the circumference of the finger.
Specifically, through the arc structural design of water-cooled tube, increase the heat exchange area of water-cooled tube and finger mould to reduce the distance of water-cooled tube and finger, in order to promote heat exchange effect, or radiating effect.
In one example, the cross section of the water-cooled tube is one of a box, a U, or a serpentine, further increasing the heat exchange area of the water-cooled tube and the finger die.
More preferably, the number of the water-cooling pipes is plural, and the plural water-cooling pipes are arranged at intervals along the extending direction of the fingerstall 1.
Specifically, a plurality of water cooling pipes can be communicated with each other, wherein one or two water cooling pipes are respectively connected with a water pump and a water tank; the plurality of water cooling pipes may be connected to the water pump and the water tank, respectively, and are not further limited in this embodiment.
Preferably, the ultrasonic probe further comprises a main controller, wherein the main controller is respectively connected with the temperature sensor and the ultrasonic probe 2, and is used for receiving the monitoring temperature sent by the temperature sensor, and stopping the operation of the ultrasonic probe 2 when the monitoring temperature is greater than the upper temperature limit value.
Specifically, when the heat exchange effect of the heat dissipation assembly 5 is poor or fails, the monitoring temperature will continuously rise, if the ultrasonic probe 2 is continuously started, not only the data of the systemic circulation condition which can truly react is not obtained, but also skin damage is possibly caused, the monitoring temperature sent by the temperature sensor is obtained by using the main controller, the monitoring temperature is judged, and when the monitoring temperature is greater than the upper limit value of the temperature, the operation of the ultrasonic probe 2 is stopped, so that the protection effect is achieved for a patient, and the acquisition of differential data can be avoided.
It can be understood that the body temperature of the patient is related to the physical constitution of the individual or the environment where the patient is located, and the like, and the upper limit value of the temperature can be 1-5 ℃ higher than the initial monitoring temperature so as to avoid the situation that the main controller judges wrongly, thereby stopping the monitoring.
Preferably, the feeding opening of the fingerstall 1 is movably connected with a cover body.
It will be appreciated that, in order to facilitate the removal of the fingerstall, a feed opening is formed in the fingerstall 1, where the feed opening may be formed at the top, the bottom, two sides or two ends of the fingerstall 1, and in this embodiment, the feed opening is movably connected with a cover body, and after the monitoring is completed, the cover body may be opened to remove the fingerstall.
Specifically, the cover body and the finger stall 1 can be clamped, falcon or connected through screws in a movable connection mode.
Preferably, the finger stall also comprises a fixing assembly, wherein the fixing assembly comprises a palm fixing piece 6 and a restraint strap 7, and two ends of the restraint strap 7 are respectively connected with the palm fixing piece 6 and the finger stall 1.
Specifically, the palm fixing piece 6 is used for fixing the palm of the patient, and can be a belt body or a sleeve body.
In one example, the palm fixing piece 6 is hollow, two ends of the palm fixing piece are provided with open sleeves, the sleeves are provided with limiting openings for at least one finger to pass through, and in order to improve comfort of a patient, the palm fixing piece 6 is made of elastic fabric.
Specifically, restraint strap 7 is used for assisting the fixation of dactylotheca 1, avoids the patient to drop at the in-process of activity, makes dactylotheca 1, leads to the monitoring to break off, for being applicable to most crowds, restraint strap 7 can adopt elastic material to make, can also adopt length adjustment subassembly to carry out length adjustment to restraint strap 7.
In one example, there are two restraint straps 7, and the two restraint straps 7 are respectively connected to two sides of the fingerstall 1, so as to balance the force applied to the fingerstall 1.
According to the limb end microcirculation monitoring device, the temperature sensor is used for detecting the monitoring temperature, the temperature control component is used for receiving the monitoring temperature sent by the temperature sensor, and a control signal is generated and sent to the heat dissipation component 5 according to the monitoring temperature and the preset target temperature, so that the heat dissipation component 5 works according to the control signal, limb end microcirculation monitoring under a constant temperature environment is achieved, and accuracy of monitoring results is improved. The ultrasonic probe 2 and the fingers are wrapped simultaneously through the finger die, the interference of the patient's activities to the imaging effect is reduced, the water-cooled tube is in butt joint with the finger die, or the finger die wraps the water-cooled tube, the heat exchange efficiency is further improved, the finger stall 1 is fixed in an auxiliary mode through the palm fixing piece 6 and the restraint belt 7, the patient is prevented from falling off in the process of the activities, and the monitoring is interrupted.
It should be noted that, the foregoing reference numerals of the embodiments of the present invention are merely for describing the embodiments, and do not represent the advantages and disadvantages of the embodiments. The foregoing description is only of the optional embodiments of the present invention, and is not intended to limit the scope of the invention, and all equivalent structural changes made by the description of the present invention and the accompanying drawings under the concept of the present invention, or direct or indirect application in other related technical fields, are included in the scope of the present invention.

Claims (8)

1. The limb end microcirculation monitoring device is characterized by comprising an ultrasonic probe and a fingerstall, wherein the output end of the ultrasonic probe extends into a containing cavity of the fingerstall;
the temperature control assembly comprises a temperature sensor, a temperature control part and a heat dissipation assembly;
the temperature sensor is used for detecting and monitoring temperature;
the temperature control component is respectively connected with the temperature sensor and the heat dissipation component and is used for receiving the monitoring temperature sent by the temperature sensor, generating a control signal according to the monitoring temperature and a preset target temperature and sending the control signal to the heat dissipation component so that the heat dissipation component works according to the control signal.
2. The device for monitoring the microcirculation of the extremities of claim 1, wherein a radiation light source and a finger die are arranged in the finger cuff, and the finger die is formed by solidifying a liquid coupling agent through irradiation of the radiation light source;
the output end of the ultrasonic probe is abutted with the outer surface of the finger die, or the output end of the ultrasonic probe is positioned in the finger die;
the heat dissipation assembly acts on the finger die.
3. The acral microcirculation monitoring device of claim 2, wherein the heat dissipation assembly includes a water cooled tube disposed within the finger die, the water cooled tube being connected to a water pump and a water tank, respectively.
4. The acral microcirculation monitoring device of claim 3, wherein the water-cooled tube is integrally arc-shaped and is disposed circumferentially around the finger.
5. The acral microcirculation monitoring device of claim 4, wherein the plurality of water-cooled tubes are arranged at intervals along the extending direction of the fingerstall.
6. The device for monitoring the microcirculation of the extremities of claim 1, further comprising a main controller, wherein the main controller is respectively connected with the temperature sensor and the ultrasonic probe, and is used for receiving the monitored temperature sent by the temperature sensor and stopping the operation of the ultrasonic probe when the monitored temperature is greater than a temperature upper limit value.
7. The device for monitoring microcirculation of extremities of claim 1, wherein the blanking mouth of the finger cuff is movably connected with a cover.
8. The acral microcirculation monitoring device of claim 1, further comprising a securing assembly including a palm securing member and a restraint strap having opposite ends connected to the palm securing member and the finger cuff, respectively.
CN202310695481.1A 2023-06-13 2023-06-13 Limb end microcirculation monitoring device Active CN116421222B (en)

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