Abstract: The present invention provides a method of operating a reprocessor that has a chamber for receiving items to be sterilized. The reprocessor is filled with water that has passed through a first and a second filter element that both comprise a filtration system. A liquid sterilant is generated by mixing the water with dry chemical reagents. The liquid sterilant is circulated through a fluid circulation system and the filtration system wherein a portion of the liquid sterilant is directed through a bypass conduit and another portion is directed through the first and second filter elements. After a predetermined exposure time, the reprocessor is drained. Then the reprocessor is filled with water for rinsing that has passed through the first and the second filter elements. The water for rinsing is heated prior to being introduced into the reprocessor.

Abstract: A reprocessor having a circulation system for circulating a microbial deactivation fluid through a chamber that forms a part of the circulation system. The reprocessor includes a water filtration system for filtering water used in the reprocessor. The water filtration system includes a fluid feed line connectable to a source of pressurized water. A first filter and second filter elements are disposed in the fluid feed line for filtering fluids flowing therethrough. The second filter element is downstream from the first filter element and has the capacity to filter particles smaller than the first filter element. The fluid feed line forms a fluid path for water entering the reprocessor, and defines a portion of a path for microbial deactivation fluid circulated through the circulation system.

Abstract: A reprocessor for microbially deactivating items. The reprocessor has a circulation system for circulating a microbial deactivation fluid through a deactivation chamber that forms part of the circulation system. A container is provided for insertion into the deactivation chamber for holding items to be microbially deactivated. The container includes a tray and a lid. The tray and lid have interlocking, integrally formed, rigid seal elements formed thereon to form a seal between the tray and the lid.

Abstract: A system for sterilizing or microbially deactivating instruments and devices. The system includes a circulation system for circulating a microbial deactivation fluid through a chamber for containing the instruments and devices. The chamber forms a portion of the circulation system. The system further includes a fluid over-flow/make-up air assembly. The fluid over-flow/make-up air assembly includes a manifold having an inner cavity that is in fluid communication with the circulation system, an overflow port in the manifold, and an overflow valve assembly disposed in the manifold allowing fluid flow from the cavity to the overflow port when a pressure in the cavity exceeds a pressure in the overflow port by a predetermined amount. A filter assembly is attached to the manifold. The filter assembly has a filter valve assembly in communication with the cavity.

Abstract: A reprocessor for microbially deactivating items. The reprocessor has a circulation system for circulating a microbial deactivation fluid through a deactivation chamber that forms part of the circulation system. A container is provided for insertion into the deactivation chamber for holding items to be microbially deactivated. The container includes a tray and a lid. The tray and lid have interlocking, integrally formed, rigid seal elements formed thereon to form a seal between the tray and the lid.

Abstract: A reprocessor having a circulation system for circulating a microbial deactivation fluid through a chamber that forms a part of the circulation system. The reprocessor includes a water filtration system for filtering water used in the reprocessor. The water filtration system includes a fluid feed line connectable to a source of pressurized water. A first filter and second filter elements are disposed in the fluid feed line for filtering fluids flowing therethrough. The second filter element is downstream from the first filter element and has the capacity to filter particles smaller than the first filter element. The fluid feed line forms a fluid path for water entering the reprocessor, and defines a portion of a path for microbial deactivation fluid circulated through the circulation system.

Abstract: A method of microbially deactivating items and storing the same, comprising the steps of: a) placing items within a cavity in a sealable container having fluid access ports therein, the fluid access ports having a normally closed position and being moveable to an open position; b) placing the container having items to be microbially deactivated in the cavity into a reprocessor having a circulation system for circulating a microbial deactivation fluid during a deactivation cycle, wherein the fluid access ports in the container are moved to the open position by actuating means on the reprocessor to be in fluid communication with the circulation systems; c) circulating the microbial deactivation fluid through the cavity of the container; and d) removing the container from the reprocessor following a deactivation cycle, wherein removal of the container from the reprocessor causes the fluid access ports to assume the normally closed position.

Abstract: A monitoring system for monitoring a fluid circulation system in a reprocessor apparatus for microbially deactivating devices, wherein the fluid circulation system includes at least one connection. The monitoring system includes pressure sensing means for sensing the pressure of fluid flowing through the fluid circulation system. The pressure sensing means generates an electrical signal indicative of the sensed pressure. A controller, responsive to the electrical signal, is provided for determining whether the sensed pressure is indicative of an improper connection.

Abstract: A system for microbially deactivating items. The system includes a circulation system for circulating a microbial decontamination fluid through a deactivation chamber that forms a part of the circulation system. A container for holding items to be deactivated is provided. The container has a sealable cavity in which the items to be deactivated may be placed, and at least one valve element that is movable between an open and a closed position to regulate fluid flow into the cavity. An actuator in the deactivation chamber is operable to move the valve element to an open position when the container is disposed within the deactivation chamber, wherein the cavity within the container is in fluid communication with the circulation system when the valve element is in the open position.

Abstract: A system for sterilizing or microbially deactivating instruments and devices. The system includes a circulation system for circulating a microbial deactivation fluid through a chamber for containing the instruments and devices. The chamber forms a portion of the circulation system. The system further includes a fluid over-flow/make-up air assembly. The fluid over-flow/make-up air assembly includes a manifold having an inner cavity that is in fluid communication with the circulation system, an overflow port in the manifold, and an overflow valve assembly disposed in the manifold allowing fluid flow from the cavity to the overflow port when a pressure in the cavity exceeds a pressure in the overflow port by a predetermined amount. A filter assembly is attached to the manifold. The filter assembly has a filter valve assembly in communication with the cavity.

Abstract: A fluid delivery system (26) for an automated processor (A) delivers washing, microbial decontaminant, and rinse fluids to spray nozzles (102, 104, 106, 108, 110) in a chamber (12) for sequentially spraying the fluids over a lumened device (B), such as an endoscope. The fluid delivery system also delivers the fluids to connection ports (150, 152, 154) which connect with internal passages (187) of the device for delivering the fluids thereto. Leaking connectors (184) connect the automated processor connection ports with inlet ports (196) of the device and allow a portion of the washing, decontaminant, and rinsing solutions to leak from each inlet port. A computer control system (80) controls cleaning, decontamination, rinsing, and drying stages of a cycle, which are all carried out within the chamber, obviating the need for human contact with the device during processing.

Abstract: A fluid delivery system (20) for an automated processor (A) includes spray nozzles (102, 104, 106, 108, 110) for sequentially spraying washing, microbial decontaminant and rinsing solutions over a lumened device (B), such as an endoscope. The fluid delivery system also includes connection ports (150, 152, 154) for connecting with internal passages (187) of the device to deliver the washing and microbial decontaminant solutions thereto. A removable rack (21), specially configured for the particular device, positions the device within a chamber (12). The spray nozzles are located on rear and side walls (114, 116, 118) and on a door (18) of the chamber, such that the device is impinged with spray from all directions. Sets (102, 104) of the spray nozzles are pulsed in sequence so that the spray jets (122) do not cancel each other out.

Abstract: A method of washing, microbially decontaminating, and rinsing of a lumened device (B), such as an endoscope includes positioning the device in a chamber (12) of an automated processor (A). Spray nozzles (102, 104, 106, 108, 110) within the chamber sequentially spray washing, microbial decontaminant, and rinse fluids over the device. Fluid connection ports (150, 152, 154) connect with internal passages (187) of the device for delivering the fluids thereto. Leaking connectors (184) connect the automated processor connection ports with inlet ports (196) of the device and allow a portion of the washing, decontaminant, and rinse solutions to leak from each inlet port. A computer control system (80) controls leak testing, cleaning, decontamination, rinsing, and drying stages of a cycle, which are all carried out within the chamber, obviating the need for human contact with the device during processing.

Abstract: A flow-through rack assembly (14) includes porous hangers (44) which support items to be decontaminated within a decontamination chamber (12). A plurality of nozzles (16) spray a decontaminant fluid, such as peracetic acid, over the items. The rack assembly includes tubes (42) which convey a portion of the decontaminant fluid under pressure to internal channels (52) of the porous hangers. The fluid permeates the hanger surface, flowing over regions of the items which are in contact with the hangers. The rack assembly ensures decontamination of those regions which may be otherwise inaccessible to fluid sprayed from the nozzles.

Abstract: A sequential delivery assembly (30) sequentially releases three different treatment materials into a fluid flow path (24) to form a treatment fluid with a composition which varies throughout a cleaning and microbial decontamination cycle. A chamber (12) receives items to be cleaned and decontaminated. A pump (22) pumps the treatment fluid from the sequential delivery assembly along a fluid flow line (24) to nozzles (16, 18) disposed within the chamber. The nozzles spray the treatment fluid over the items to be cleaned and decontaminated. The delivery assembly includes a well (34) for receiving a three compartment cup (44). The cup contains a first compartment (70) which includes a cleaning material (76), such as a detergent. A second compartment (72) contains pre-treatment materials (78), such as buffers and corrosion inhibitors, which prepare the system for receiving a microbial decontaminant (80), such as a concentrated solution of peracetic acid, contained in the third compartment (74).

Abstract: In automated reprocessing system (B), a leak detection system (10) evaluates the integrity of a device, such as an endoscope (A), having an internal passage (66). The leak detection system includes an interior chamber (42) which is connected to the internal passage by quick connects (18, 20). A source of compressed air (22) supplies the chamber and internal passage with air to a suitable test pressure. A pressure sensor (50) and a temperature sensor (54), in communication with the chamber, detect the pressure and temperature within the chamber and hence in the endoscope passage. Pressure and temperature measurements made over time are used to determine changes in the gas volume, indicative of whether leaks are present in the endoscope. If the endoscope is determined to be free of leaks, the endoscope is washed and microbially decontaminated in the reprocessing system.

Abstract: A cleaning efficacy indicator system (20) includes a light source (50) and a light receiver (56). A light-transmitting optical indicator element (30) receives light from the source (50) and transmits the light to the receiver (56). The receiver (56) provides at an electrical output signal (82) which varies in accordance with light received from the light source (50). The light-transmitting optical indicator element (30) is purposefully soiled on its outer surface (48) with a soiling agent to inhibit or alter its light transmitting abilities. However, upon effective washing, the indicator element (30) is able to transmit an increased light intensity. The indicator element (30) is washed with a load of soiled articles. Either during washing operations or subsequently, the light transmission through the indicator element (30) is monitored using the light output signal (82) of the light receiver (56). A select change in light transmission is indicative of effective washing operations.