Abstract: A cord retractor includes a support member, a first length of electrical cord, a spool, and a second length of electrical cord. The spool includes a helical groove on an outer surface of the spool. The helical groove has a width corresponding to a cross-sectional width of the first length of electrical cord, and the spool is rotatably mounted on the support member. The second length of electrical cord is electrically coupled to the first length of electrical cord. A first portion of the second length of electrical cord is secured at a rotating location, and a second portion of the second length of electrical cord is secured at a stationary location. The first length of electrical cord is selectively extendable from and retractable on the spool, and the second cord flexes to accommodate the movement of the rotating location with respect to the stationary location.

Abstract: A cord retractor includes a support member, a first length of electrical cord, a spool, and a second length of electrical cord. The spool includes a helical groove on an outer surface of the spool. The helical groove has a width corresponding to a cross-sectional width of the first length of electrical cord, and the spool is rotatably mounted on the support member. The second length of electrical cord is electrically coupled to the first length of electrical cord. A first portion of the second length of electrical cord is secured at a rotating location, and a second portion of the second length of electrical cord is secured at a stationary location. The first length of electrical cord is selectively extendable from and retractable on the spool, and the second cord flexes to accommodate the movement of the rotating location with respect to the stationary location.

Abstract: In various embodiments, an electronic flow selector of a fluid flow control system may be used to select a flow rate of a fluid. When the system is in an electronic mode, an encoder may electronically encode the fluid flow selection. A controller may receive the electronically encoded flow selection and transmit a corresponding control signal to an electronic valve to allow the fluid to flow at the selected flow rate. When the system is in a manual mode, backup manual flow selectors may be used to directly control the flow rate of a fluid. When the system is in a manual mode, the mechanical backup flow selectors may be in a deployed position. When the system is in an electronic mode, the mechanical backup flow selectors may be in a retracted position. Particular applications to gases and anesthesia delivery are disclosed herein.

Abstract: In various embodiments, an electronic flow selector of a fluid flow control system may be used to select a flow rate of a fluid. When the system is in an electronic mode, an encoder may electronically encode the fluid flow selection. A controller may receive the electronically encoded flow selection and transmit a corresponding control signal to an electronic valve to allow the fluid to flow at the selected flow rate. When the system is in a manual mode, backup manual flow selectors may be used to directly control the flow rate of a fluid. When the system is in a manual mode, the mechanical backup flow selectors may be in a deployed position. When the system is in an electronic mode, the mechanical backup flow selectors may be in a retracted position. Particular applications to gases and anesthesia delivery are disclosed herein.

Abstract: In various embodiments, two or more electronic flow selectors of an electronic fluid flow control system may be used to control the flow rates of multiple fluids. In a total flow control mode, a first electronic flow selector may be used to select a total flow rate of two or more fluids. A second electronic flow selector may be used to select a flow rate or ratio of a flow rate of one fluid to the total flow rate of the two or more fluids. In a direct flow control mode, each electronic flow selector may be used to select a flow rate of a unique fluid. One of the fluids may be oxygen, and the other fluid, a balance gas, may be selected as either nitrous oxide or air using an electronic balance gas selector.

Abstract: In various embodiments, an electronic flow selector of a fluid flow control system may be used to select a flow rate of a fluid. When the system is in an electronic mode, an encoder may electronically encode the fluid flow selection. A controller may receive the electronically encoded flow selection and transmit a corresponding control signal to an electronic valve to allow the fluid to flow at the selected flow rate. When the system is in a manual mode, backup manual flow selectors may be used to directly control the flow rate of a fluid. When the system is in a manual mode, the mechanical backup flow selectors may be in a deployed position. When the system is in an electronic mode, the mechanical backup flow selectors may be in a retracted position. Particular applications to gases and anesthesia delivery are disclosed herein.