Bmc Medical Co., Ltd.

Boe Technology Group Co., Ltd.

Beijing Boe Display Technology Co., Ltd.

Tsinghua University

University of Science and Technology Beijing

Jade Bird Fire Co., Ltd.

Beijing Jade Bird Universal Fire Protection System Software Service Co., Ltd.

Caremedi Technology Co.,ltd

Yajie Wang

Zhi Zhuang

Mingzhao Zhou

Lianjie Qu

Yaokun Zheng

Liyuan Jiang

Yanqi Jiang

Qiang Zhang

Hong Zhu

Chen Zhang

Rui Li

Pengju Zhang

Haiyan Sun

Mingxing Liu

Hao Miao

Huijun Chen

Erliang Li

Jingzhe Fang

Chunyao Wang

Haikun Qi

Haibin Zuo

Xuemei Jiang

Peng Zhu

Respiratory mask

Nasal mask

A cushion includes an accommodating cavity for accommodating a nose or oronasal part, which is defined by a contact portion, a connecting portion and an intermediate portion. The contact portion is configured to be in sealing contact with a patient's face. The connecting portion is configured to connect with a frame of the respiratory mask. The intermediate portion is connected between the contact portion and the connecting portion. The intermediate portion is formed with a recess portion recessed toward the accommodating cavity. The recess portion is formed into an arc or ring shape extending in a circumferential direction of the cushion, which includes a first connecting wall and a second connecting wall. A projection area Sof the first connecting wall on a vertical plane is smaller than a projection area Sof the second connecting wall.

Liner for breathing mask, breathing mask, and ventilation treatment device

The present disclosure provides an airflow detection circuit, wherein the airflow detection circuit includes: a first thermistor, one terminal of the first thermistor being coupled to a first resistor and a first switch, and the other terminal of the first thermistor being coupled to a first input terminal of a first operational amplifier; a second thermistor, one terminal of the second thermistor being coupled to the first resistor and the first switch, and the other terminal of the second thermistor being coupled to a second input terminal of the first operational amplifier; a voltage source, coupled to the first resistor and the first switch and configured to provide a supply voltage for the first thermistor and the second thermistor through a corresponding supply path based on ON or OFF of the first switch; and a controller, coupled to an output terminal of the first operational amplifier and configured to collect an output signal of the first operational amplifier and determine an airflow flow rate based on the output signal. The airflow detection circuit of the present disclosure senses a temperature through the first thermistor and the second thermistor and determines the airflow flow rate through the output signal of the first operational amplifier, thereby improving the stability, reliability and universality of airflow detection results.

Aspirated smoke fire detector, fire protection system, airflow detection circuit and method

Disclosed is a method for recycling a coal liquefaction residue. The method includes S1, drying a coal liquefaction residue and pulverizing to obtain a pulverized coal liquefaction residue; S2, subjecting the pulverized coal liquefaction residue to a solvothermal extraction in an autoclave to obtain an extract liquid and a residue; S3, distilling the extract liquid and recovering an organic solvent to obtain a solid extract.

Method for recycling coal liquefaction residue

The present disclosure provides a non-contact neck-based respiratory and pulse signal detection method and apparatus, and an imaging device. The method includes: acquiring 3D morphological information of a neck of a human body in real-time; and acquiring a respiratory signal and an electrocardiogram signal of the human body on the basis of the 3D morphological information of the neck.

Non-contact neck-based respiratory and pulse signal detection method, apparatus, and imaging device

A respiratory mask connector and a respiratory mask. The respiratory mask connector is configured to connect a frame to a connection pipe. The respiratory mask connector has a connection face and a spherical face, the connection face being configured to be connected to the frame, and the spherical face being configured to be in ball-socket connection with a pipe head of the connection pipe. The connection face and the spherical face are respectively configured as either the outer wall surface of the respiratory mask connector or the inner wall surface of the respiratory mask connector. The respiratory mask connector can be used for a respiratory mask.

Respiratory mask connector and respiratory mask

A liquid crystal composition and a display device are provided. The liquid crystal composition includes a compound having a structure represented by general formula (I) and a compound having a structure represented by general formula (II),  and L, L, Land Lare independently selected from  Zis selected from a single bond or &#x2014;C&#x2261;C&#x2014;; R, Rand Rare independently selected from alkyl, alkenyl, alkynyl, haloalkyl or OR; and Ris selected from alkyl, alkenyl, alkynyl or haloalkyl.

Liquid crystal composition and display device

A cushion for a breathing mask and a breathing mask. The cushion includes a connection portion for connecting to a frame or an elbow assembly of the breathing mask; a face contact portion for getting in contact with the face of a patient, wherein the face contact portion is formed by a thin membrane; and a support portion which is connected between the connection portion and the face contact portion, wherein the face contact portion has an outwardly extending portion which extends from the support portion to the exterior of the cushion and an inwardly extending portion which extends from the outer circumference side of the outwardly extending portion to the interior of the cushion in at least partial area.

Cushion for breathing mask and breathing mask

Patient interface

A method for cutting a substrate of irregular pattern comprises: forming a cutting line on the substrate, wherein the closed region enclosed by the cutting line is the irregular pattern that is required; forming a trough line at the cutting line; and applying an external force to the substrate so as to divide the substrate at the trough line. The method can remarkably improve accuracy and efficiency of cutting a substrate of irregular pattern.

Method for cutting substrate of irregular pattern and display device

A method for cutting a substrate of irregular pattern includes: forming a cutting line on the substrate, wherein the closed region enclosed by the cutting line is the irregular pattern that is required; forming a trough line at the cutting line; and applying an external force to the substrate so as to divide the substrate at the trough line. The method can remarkably improve accuracy and efficiency of cutting a substrate of irregular pattern.

Growing community of inventors

Beijing, China

Yajie Wang