Method for measuring blood pressure, pulse and vas compliance without inserting vas cavity

Abstract

A method for measuring blood pressure, pulse and vascular compliance without invading a vascular cavity is provided. The blood flow of a vessel is blocked by using an artery clamp, a voltage-variable resistor-containing probe of a pressure transducer is implanted between the muscle layer and the inner membrane of the vessel at the distal end to the heart, followed by biogum sealing; or the voltage-variable resistor probe is closely attached to the outer membrane of the vessel, and then the probe and the vessel are fixed together inside a rigid cylindrical cover. When the artery clamp is released, the pressure inside the vascular cavity rises and is transferred to the voltage-variable resistor probe, resulting in the change in resistance, the resistance change is converted into a current change that is processed by a computer to produce a continuously-recorded blood pressure change, and simultaneously the computer calculates pulses according to the peak distance of the blood pressure and records the change in pulse. The cylindrical cover is provided thereon with a tension transducer that converts a change of vessel displacement into a change of resistance and then a change of vessel displacement again, representative of the change in vascular volume, and calculates continuously-varying vascular compliance. The invention doesn't block the blood flow at the distal end of the vessel to avoid the influence on blood supply to the dominant organs of the vessel to be detected.

Description

technical field [0001] The invention relates to a method for measuring blood pressure, pulse and blood vessel compliance, in particular to a method for measuring blood pressure, pulse and blood vessel compliance without inserting into a blood vessel cavity. technical background [0002] Blood pressure and pulse (heart rate) are important vital indicators [0003] In biological science experiments and clinical practice, vital indicators are the basic monitoring items, among which blood pressure and heart rate are the most important observation indicators. For a long time, in animal experiments for blood pressure measurement, the main animals commonly used are: rats, rabbits, dogs, etc. Invasive blood pressure monitoring is widely used in animal experiments, and has become more and more widely used in clinics and operations. It can monitor blood pressure continuously, accurately and in time. For complex operations and clinical critical illnesses, it is helpful to judge the b...

AI Technical Summary

Problems solved by technology

Its advantage is that it directly measures the intravascular pressure, eliminates the interference of anesthesia, surgery, and restraint, and can actually reflect the actual cardiovascular indicators of animals. The value is accurate and stable, and it can continuously observe blood pressure changes for a long time. Long-term insertion into the blood vessel lumen requires high anticoagulation and can also block or partially block blood. The equipment is expensive, the experimental operation is complicated, and the technology is difficult.

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