PC-based physiologic monitor and system for resolving apnea episodes during sedation

Abstract

An anesthesia delivery and monitoring system for use during outpatient surgery performed under sedation level anesthesia that includes a ventilatory system, a system for supplying sedation anesthesia, a respiratory sensor adapted to detect a respiration parameter of such a patient, and a system for supplying a timed back-up breath to such a patient through the ventilatory system. The timed back-up breaths are supplied in response to the respiration parameter falling outside a preset threshold and at a positive pressure exceeding a base operating pressure of the respiratory system. The system for supplying sedation anesthesia is an intravenous supply system for anesthesia, a ventilatory system coupled to the patient, a needle and syringe, or any combination thereof. The respiratory system includes a PC-based physiologic monitor with user modified feedback control signal.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority under 35 U.S.C. § 119(e) from provisional U.S. patent application No. 60 / 665,919 filed Mar. 28, 2005 the contents of which are incorporated herein by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates to resolving apnea episodes during sedentary anesthesia, and, in particular, to the use of a ventilator system that delivers timed back-up breaths to patients during sedentary anesthesia, and to a PC-based physiologic monitor used in such a system. [0004] 2. Description of the Related Art [0005] During surgery and other procedures in which the patient undergoes a light plane of anesthesia, also called sedation level anesthesia or sedentary anesthesia, the patent is given anesthesia, but an artificial airway and mechanical ventilation is not utilized, which is a procedure done during a more major surgery using a general anesthesia. Because the airway i...

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Benefits of technology

[0007] Accordingly, it is an object of the present invention to provide a monitor system that overcomes the shortcomings of conventional techniques for monitoring a patient, especially during sedation level anesthesia. This object is achieved, according to one embodiment of the present invention, by providing a personal computer (PC) based physiologic monitor system that includes a personal computer having a display and an input/output port for attachment to an external device. The PC based system also includes a physiologic sensor coupled to the personal computer through the input/output port so that a modified output of the physiologic sensor is graphically displayed on the display. A controller, a portion of which is disposed in the personal computer, modifies the output of the physiologic sensor and provides a feedback control signal for modifying the output of the physiologic sensor.

[0008] It is a further object of the present invention to provide a ventilatory system for use during outpatient surgery performed under sedation level anesthesia that overcomes the shortcomings of conventional pressure support systems used in this environment. This object is achieved, according to one embodiment of the present invention, by providing a ventilatory system for use during outpatient surgery performed under sedation level anesthesia that includes a pressure/flow generating system adapted to be coupled to a patient, a system fo

Problems solved by technology

Patients are also known to accidentally drift from a light plane of anesthesia to a deep plane.

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