Patent ID: 11937903
Assignee: MICROJET TECHNOLOGY CO., LTD.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 9:
10. A blood pressure device, provided for measuring a blood pressure of a cardiovascular system of a user, the blood pressure device comprising:
a first blood pressure measuring device having a first expander and a first sensor, wherein the first expander is capable of being worn on a first position of a wrist of the user and close-fitting the skin of the user in a non-invasive way, so that the first sensor is configured to close-fit against the skin of the user to obtain a first blood pressure information of the first position;
a second blood pressure measuring device having a second expander, and a second sensor, wherein the second expander is capable of being worn on a second position of the wrist of the user and close-fitting the skin of the user in a non-invasive way, so that the second sensor is configured to close-fit against the skin of the user to obtain a second blood pressure information of the second position; and
a controller electrically coupled to the first blood pressure measuring device and the second blood pressure measuring device so as to control the first expander to adjust tightness between the first expander and the skin of the user and to control the second expander to adjust tightness between the second expander and the skin of the user, and wherein the controller obtains a pulse transit time from the first blood pressure information and the second blood pressure information, and the controller generates at least one blood pressure value based on the pulse transit time;
wherein the first expander and the second expander respectively comprise an actuator, and wherein the actuator of the first expander controls the first expander to be inflated and expanded, and the actuator of the second expander controls the second expander to be inflated and expanded;
wherein each of the actuators comprise a valve device and at least one gas transmission device, and wherein the at least one gas transmission device is disposed on one side of the valve device;
wherein the valve device comprises:
a convergence plate having a convergence outlet and a guiding channel in communication with the convergence outlet, wherein a plurality of convergence plate assembly areas is defined on the convergence plate, and each of the convergence plate assembly areas has a convergence trough, a convergence plate convex portion, a discharge trough, and a discharge outlet, wherein the guiding channel communicates with the convergence trough in each of the plurality of convergence plate assembly areas, and the guiding channel is in communication between the convergence trough and the discharge trough in each of the plurality of convergence plate assembly areas, and wherein the convergence plate convex portion protrudes from the discharge trough, and is surrounded by the discharge trough, and wherein the discharge outlet is disposed at a central portion of the convergence plate convex portion;
at least one chamber plate, wherein the convergence plate is disposed on each of the at least one chamber plate, wherein a flow guiding chamber and a receiving trough are disposed in a portion of the at least one chamber plate corresponding to each of the plurality of convergence plate assembly areas of the convergence plate, wherein the flow guiding chamber and the receiving trough are respectively disposed on two opposite surfaces of the at least one chamber plate, and the flow guiding chamber corresponds to the convergence trough of the convergence plate and is in communication with the convergence trough, wherein a confluence chamber is disposed on a bottom of the receiving trough, and at least one communication hole is disposed on a bottom of the confluence chamber to communicate with the flow guiding chamber, and wherein a chamber plate convex portion is disposed in the flow guiding chamber and is surrounded by the at least one communication hole, and wherein a second communication hole is disposed on a portion of the at least one chamber plate corresponding to the discharge trough of each of the plurality of convergence plate assembly areas of the convergence plate, and the second communication hole is in communication with the confluence chamber; and
at least one valve sheet, wherein the at least one valve sheet is between the convergence plate and the at least one chamber plate, and the at least one valve sheet correspondingly abuts against the chamber plate convex portion in the at least one chamber plate, wherein a valve hole is disposed on the at least one valve sheet and corresponds to the chamber plate convex portion, and the valve hole is closed by the chamber plate convex portion, and wherein the at least one valve sheet abuts against the convergence plate convex portion in each of the plurality of convergence plate assembly area of the convergence plate to close the discharge outlet;
wherein the gas transmission device is positioned in the receiving trough of the at least one chamber plate so as to close the confluence chamber and so as to operate to transmit gas into the confluence chamber; and wherein when the gas transmission device operates, the gas transmission device guides the gas into the valve device from the confluence chamber of the at least one chamber plate so as to push the valve sheet to detach from the chamber plate convex portion, whereby the gas passes through the valve hole of the at least one valve sheet and flows into the convergence trough of the convergence plate in communication with the flow guiding chamber, and the gas is converged at the guiding channel and discharged out from the convergence outlet.