초록 ▼

A fluid management pump system (30) for supplying sterile solution to a surgical site. The system includes an inflow tube (42) for supplying sterile solution to the surgical site. The solution is forced through the inflow tube by a pump (40). Fluid is drained from the surgical site in order to maint

A fluid management pump system (30) for supplying sterile solution to a surgical site. The system includes an inflow tube (42) for supplying sterile solution to the surgical site. The solution is forced through the inflow tube by a pump (40). Fluid is drained from the surgical site in order to maintain the pressure at the site through an outflow tube (44). Both the inflow and outflow tubes are attached to a cassette (52). The cassette is mounted to a control unit (50). Internal to the cassette are pinch valves (54, 56) for controlling fluid flow through, respectively, the inflow and outflow tubes. The open/closed states of the inflow and outflow tubes are controlled by solenoids (58, 60) internal to the control unit that act on the pinch valves. The control unit actuates the solenoids and supplies the energization current to the pump based on operator entered commands and indication that the pressure at the surgical site. A column of air representative of liquid-state fluid pressure at the surgical site is supplied to the control unit through the cassette.

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A fluid management pump system for supplying a liquid-state fluid from a container to a surgical site, said fluid management pump system including:a tube set, said tube set includi

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A fluid management pump system for supplying a liquid-state fluid from a container to a surgical site, said fluid management pump system including:a tube set, said tube set including:a cassette, said cassette having a back panel, a front panel spaced from said back panel and a coupling member;an inflow tube for providing a conduit for the fluid from the container to the surgical site, said inflow tube extending through said cassette;an outflow tube for providing a conduit through which fluid is drained from the surgical site, said outflow tube extending through said cassette;first and second fluid control valves attached to said cassette, wherein: said first fluid control valve is associated with said inflow tube for regulating fluid flow therethrough; and said second fluid control valve is associated with said outflow control valve for regulating fluid flow therethrough; anda pressure feedback assembly attached to said cassette and in fluid communication with the surgical site for forming a variable-pressure air column that is representative of liquid fluid pressure at the surgical site, said pressure feedback assembly having a port through which the variable-pressure air column is directed outwardly from the back panel of the cassette and a seal disposed around said port;an electrically actuatable pump connected between the container and said inflow tube of said tube set for forcing fluid from the container through said inflow tube, said pump being actuated in response to the application of an energization signal thereto; anda control unit, said control unit including:a housing, said housing having a surface against which said back panel of said cassette is positioned and including a locking mechanism for releasably securing said cassette to said housing;a pressure sensing assembly disposed in said housing, said pressure sensing assembly including a conduit disposed in said housing, said conduit having an opening in said surface of said housing against which said cassette is seated and positioned to be aligned with said port of said pressure feedback assembly so that the variable-pressure column flows into said conduit of said pressure sensing assembly and a pressure transducer in said conduit of said pressure sensing assembly, said pressure transducer being configured to generate a sensed-pressure signal representative of the pressure of the variable-pressure air column;first and second valve controllers mounted in said housing positioned to be adjacent said surface of said housing against which said cassette is seated, said first valve controller being positioned to open/close said first control valve of said tube set in response to a inflow control signal so as to control fluid flow through said inflow tube, and said second valve controller being positioned to open/close said second control valve of said tube set in response to an outflow control signal so as to control fluid flow through said outflow tube; anda pump controller disposed in said housing, said pump controller being connected to receive operator generated commands and said sensed-pressure signal, to generate said energization signal to said pump, to generate said inflow and outflow control signals to said first and second valve controllers and being configured to control the open/closed states of said first and second control valves in response to the operator-generated commands and said sensed-pressure signal.