초록 ▼

A medical pump comprising an intake/discharge nozzle, a fluid circulator, an elongate barrel extending between and joining the nozzle and circulator, a flushing path and an efflux path peripherally about the flushing path connecting the circulator and nozzle, non-return valves within the paths provi

A medical pump comprising an intake/discharge nozzle, a fluid circulator, an elongate barrel extending between and joining the nozzle and circulator, a flushing path and an efflux path peripherally about the flushing path connecting the circulator and nozzle, non-return valves within the paths providing for uni-directional flow from the nozzle through the efflux path to the circulator and from the circulator through the flushing path to the nozzle. A debris-collecting filter element is disposed within the efflux path within the barrel. The filter element and valves may be in the form of a replaceable cartridge. The valves may be constructed as a shuttle with joined oppositely operating valve plates. The valves may also comprise a resilient flap member with a flap formed therein, both the flap member and flap being independently operable and defining the two valves.

대표청구항 ▼

A pump for fluid recirculation and debris collection comprising a nozzle for both intake and discharge for connection by tube to a bodily or other cavity, and a fluid circulator for imposing on fluid within the tube cyclic changes of pressure to cause the fluid to flow alternately and repeatedly int

A pump for fluid recirculation and debris collection comprising a nozzle for both intake and discharge for connection by tube to a bodily or other cavity, and a fluid circulator for imposing on fluid within the tube cyclic changes of pressure to cause the fluid to flow alternately and repeatedly into and out of the cavity thereby to flush the cavity, an elongate barrel extending between and joining the circulator and the nozzle, two different fluid flow paths within said barrel and connecting said circulator and said nozzle, namely, an efflux path including a reservoir for flow of fluid away from the cavity into the reservoir of the device and thence to the circulator, and a flushing path for a flow of fluid from the circulator to the cavity, each of which paths including a non-return valve whereby, in use of the device, fluid flow is uni-directional from the circulator through the flushign path to the cavity, and thence from the cavity through the efflux path back to the circulator, the said efflux path and flushing path are disposed one within the other with one path peripherally surrounding the other path between the circulator and the nozzle, a hollow filter element is disposed within the efflux path with the barrel for removal of debris from the flow away from the cavity, the filter element having one open end seating around the circumference of the efflux path at the nozzle end of the path for free flow of the fluid therein from the cavity, the filter element extending along the efflux path from the seating towards the circulator end of the efflux path over a major part of the length of the efflux path, said filter element confining the debris while allowing passage of fluid flow through the filter element to the circulator, and the nonreturn valve of the efflux path being located between the filter element and the circulator and downstream of the confined debris, said filter element and said non-return valves comprising a replaceable cartridge within said barrel.