초록 ▼

An improved patient temperature exchange system and method is disclosed for use with one or more interconnectable patient contact pads. In one embodiment, the system includes a circulating pump for drawing fluid through the interconnected pad(s) under negative pressure, and for pumping the fluid thr

An improved patient temperature exchange system and method is disclosed for use with one or more interconnectable patient contact pads. In one embodiment, the system includes a circulating pump for drawing fluid through the interconnected pad(s) under negative pressure, and for pumping the fluid through one of more heat exchange devices into a circulating reservoir. A make-up reservoir may be provided for gravity fluid flow into the circulating reservoir during the filling of the interconnectable pad(s) and for receiving fluid upon emptying of the interconnectable pad(s). During normal heating/cooling operations, the circulated fluid does not pass through the make-up reservoir, thereby yielding a highly responsive system. The make-up and circulatory reservoirs may be directly interconnected, with the make-up reservoir maintained at atmospheric pressure (e.g. via a non-spill vent). To reliably maintain the desired negative pressure in the interconnectable pad(s), the system may provide for fluid pressure sensing on the inlet side of the circulating pump. The sensed pressure may be utilized to control the speed of the circulating pump. The system may further provide for the positioning of pressure drop a componentry on the outlet side of the circulating pump, thereby further facilitating the maintenance of a desired negative pressure within the interconnected pad(s). A bypass fluid line may also be included to provide for fluid preconditioning prior to interconnection of and/or fluid flow through the pad(s). Multiple temperature sensors and an interface for an external patient temperature input may also be provided for enhanced fluid heating/cooling control.

대표청구항 ▼

An improved patient temperature exchange system and method is disclosed for use with one or more interconnectable patient contact pads. In one embodiment, the system includes a circulating pump for drawing fluid through the interconnected pad(s) under negative pressure, and for pumping the fluid thr

An improved patient temperature exchange system and method is disclosed for use with one or more interconnectable patient contact pads. In one embodiment, the system includes a circulating pump for drawing fluid through the interconnected pad(s) under negative pressure, and for pumping the fluid through one of more heat exchange devices into a circulating reservoir. A make-up reservoir may be provided for gravity fluid flow into the circulating reservoir during the filling of the interconnectable pad(s) and for receiving fluid upon emptying of the interconnectable pad(s). During normal heating/cooling operations, the circulated fluid does not pass through the make-up reservoir, thereby yielding a highly responsive system. The make-up and circulatory reservoirs may be directly interconnected, with the make-up reservoir maintained at atmospheric pressure (e.g. via a non-spill vent). To reliably maintain the desired negative pressure in the interconnectable pad(s), the system may provide for fluid pressure sensing on the inlet side of the circulating pump. The sensed pressure may be utilized to control the speed of the circulating pump. The system may further provide for the positioning of pressure drop a componentry on the outlet side of the circulating pump, thereby further facilitating the maintenance of a desired negative pressure within the interconnected pad(s). A bypass fluid line may also be included to provide for fluid preconditioning prior to interconnection of and/or fluid flow through the pad(s). Multiple temperature sensors and an interface for an external patient temperature input may also be provided for enhanced fluid heating/cooling control. est handpiece including measuring a flow rate of aspiration fluid and measuring a temperature difference between the irrigation fluid and the aspiration fluid using the test handpiece; calculating, in response to input from the steps of monitoring energy provided and energy removed by the test handpiece, a matrix of power levels and duty cycle combination that will not generate sufficient heat to create damage in eye tissue; using the matrix in order to alert a user of subsequent handpiece systems of selected power levels and duty cycle that would cause damage of eye tissue. 5. A method for regulating fluid flow and energy in a control console for providing irrigation fluid and energy to an ultrasonic phacoemulsification handpiece and aspirating fluid from an eye during ocular surgery, the method comprising the steps of: using a test handpiece to determine a matrix of power levels and duty cycle combinations that will not generate sufficient heat to create damage in eye tissue; and using the matrix in subsequent handpiece systems to prevent operation of the subsequent handpiece systems outside the matrix of power levels and duty cycle. 6. A method for regulating fluid flow and energy in a control console for providing irrigation fluid and energy to an cataract extraction handpiece and aspirating fluid from an eye during ocular surgery, the method comprising the steps of: using a test handpiece to determine a matrix of power levels and duty cycle combinations that will not generate sufficient heat to create damage in eye tissue; and using the matrix in order to alert a user of subsequent handpiece systems of selected power levels and duty cycles that would cause damage of eye tissue. d in the window opening before the system is filled with concrete or other hardenable materials, and the window assembly is covered with protective materials effective to prevent damage to the window during the filling of the system. 53. The system of claim 50 wherein a door opening is formed in opposing inner and outer panels, and a door buck is disposed in the door opening, the door buck having surfaces effective to inhibit the flow of concrete or other materials into the door opening and in the system, the door buck surfaces prefitted to a door assembly. 54. A tie rail for holding forming panels of a system for forming structures of concrete or other pourable, hardenable materials comprising: a first retaining section, a second retaining section spaced from the first retaining section, and at least one web member extending between the first and second retaining sections, the retaining sections engageable with at least one edge of a forming panel, the retaining sections having at least one engagement portion disposed to contact and extend over the surface of a forming panel edge and to extend generally a substantial length of vertical edges of the panel, the engagement portion having a weakened zone effective to permit the removal of at least a portion of the engagement portion from the retaining section along the weakened zone; and the engagement portion extending a distance effective to inhibit displacement of the panel edges from the retaining sections when the panel is subject to pressures from the concrete or other hardenable materials, and the tie rail web effective to maintain the spacing and relative position of the retaining sections. 55. The tie rail of claim 54 wherein tie rail extends generally continuously along a sub