Carotid sinus pressure receptor stimulation device

Abstract

The invention relates to a carotid sinus pressure sensor stimulation device. The carotid sinus pressure sensor stimulation device comprises an electrode tip, an internal control system and an externalcontrol system. The electrode tip wraps the outer wall of a carotid sinus blood vessel and comprises an activation device and a sensing device, wherein the activation device emits electrical stimulation to activate a carotid sinus pressure sensor, and the sensing device monitors the heart rate and the blood pressure of an examinee by sensing stretching and pulsation of a blood vessel wall; the internal control system is implanted subcutaneously, and is connected with the sensing device and the activation device; the internal control system compares the heart rate and the blood pressure detected by the sensing device with predetermined thresholds, and decides whether to emit stimulation or change a stimulation voltage of the activation device based on the comparison result. The invention regulates blood pressure, autonomic nervous system activity, and neurohormone secretion by selectively activating a pressure receptor, thereby reducing adverse effects thereof on the heart, vasculature, and other organs and tissues.

Description

technical field [0001] The invention relates to the field of medical devices, and more specifically relates to a carotid sinus baroreceptor stimulating device. Background technique [0002] Direct activation of baroreceptors to induce changes in the baroreflex system to control blood pressure is described in published PCT Application No. WO 02 / 026314. US Pat. No. 6,073,048A discloses a baroreflex regulation method for stimulating baroreflex arcs based on various cardiovascular and pulmonary parameters. The existing implantable medical device for the treatment of heart failure and hypertension, BAROSTIM NEO, uses the patented technology of CVRx to activate baroreceptors through micro-current, induce changes in the baroreflex system, and help the body restore the natural mechanism of cardiovascular regulation to treat chronic In heart failure and hypertension, the device can decrease sympathetic activity and increase parasympathetic activity, ultimately restoring autonomic ne...

AI Technical Summary

Problems solved by technology

However, the stimulation mode of this device is to continuously stimulate the blood pressure reflex system with a constant voltage, and the stimulation mode cannot be changed according to the specific conditions of the patient. Sometimes the high voltage required for nerve stimulation may damage the carotid sinus nerve, which may increase the incidence of hypotensive events, and also There may be an increase in the patient's blood pressure

For example, a patient may be experiencing periods of reduced blood pressure or hypotension, and the device is still delivering current that stimulates the baroreceptors, causing the patient to become hypotensive

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