Device and system for sterilizing objects

• US 5,534,221 A
• Filed: 07/29/1994
• Issued: 07/09/1996
• Est. Priority Date: 03/13/1992
• Status: Expired due to Term

• Current Assignee: American Sterilizer Company (Steris Corporation)
• Original Assignee: American Sterilizer Company (Steris Corporation)
• Inventors: Little, William C., Hillebrenner, H. William, Shoff, David E., Stack, Joseph M., Petko, Robert S., Curtis, Charles T., Butler, Kevin H., Mielnik, Thaddeus, Zell, Peter, Sheth, Vipul B.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): NOT, DEFINED
• Application Number:
  US08/282,228
• Time in Patent Office: 711 Days
• Field of Search: 422/28, 422/33, 422/292, 422/295, 422/300, 422/297, 220/4.21, 220/4.27, 220/771, 206/363, 206/364, 206/370, 206/438, 206/524.8, 600/133, 604/283
• US Class Current: 422/33
• CPC Class Codes: A61B 1/125 using fluid circuits
• CPC Class Codes: A61L 2/26 Accessories or devices or components used for biocidal treatment

Abstract

A system for sterilizing an object including a hollow cassette for containing the object, a sealable opening in the cassette for ingress and egress of the object, a seal for forming a fluid-tight seal around the opening, input and output ports in the cassette for receiving and exhausting a sterilizing fluid and a sealing check valve in the input and output ports for providing a fluid-tight seal when no connections are made to the input and output ports such that when the object is sterilized within the cassette, the cassette will maintain a sterilized atmosphere for the object until the cassette is opened to allow use of the object.

Claims

1. A device utilizing a sterilizing agent to sterilize a lumened object, said lumened object having a part having a neck portion and an outer flange at the top of said neck portion, said device comprising:

a cassette for containing said lumened object, said cassette comprising;

a first container section;

a second container section engaged with said first container section;

a fluid-tight inner cavity formed between said first container section and said second container section; and

an input port in the casseette for receiving a sterilizing agent into said inner cavity;

an output port, separate from said input port, said output port connectable to a vacuum source and including a passage through which the sterilizing agent is expelled from said inner cavity; and

a connector having a first connecting portion connectable to said lumened object and a second connecting portion connectable to said output port;

said first connecting portion comprising a seal for creating a fluid-tight connection about said neck portion of said port of said lumened object;

whereby said lumened object is connected to said connector and said connector is connected to said outport port and the first container section is engaged with the second container section to form said fluid-tight inner cavity in which the lumened object is retained;

sterilizing agent is introduced through said input port into said inner cavity where it sterilizes the outside surface of the endoscope and a vacuum is applied to the output port and the sterilizing agent is expelled from the inner cavity by passing through a lumen of the lumened object, thereby sterilizing the lumen, and passing through the passage and out of said cassette.

2. A device as described in claim 1 wherein said first connecting portion defines a hollow cavity therein, said connector not including a projection or extension for insertion into said lumened object.

3. A device as defined in claim 1 wherein said input port further comprises a first valve for automatically opening and closing said input port, and said output port further comprises a second valve for automatically opening and closing said output port, each of said valves having an open position and a closed position, wherein said first valve moves from said closed to open position upon engagement of said input port with a source of sterilizing agent, said first valve returning to said closed position upon removal from said source of sterilizing agent, and said second valve moves from said closed to said open position upon engagement of said output port with a vacuum source, said second valve returning to said closed position upon removal from said vacuum source.

4. A method for sterilizing and storing endoscopes comprising the steps of:

a) providing one or more endoscopes, each of said endoscopes including an outer surface and at least one lumen;

b) providing a sealable cassette comprising;

i) a first container section;

ii) a second container section engagable with said first container section;

iii) an input port; and

iv) an output port; and

c) providing a connector for connecting the one or more endoscopes to said output port;

d) connecting an end of each of the endoscope(s) to said connector;

e) connecting said connector to said output port;

f) engaging said first container section with said second container section to create a fluid-tight inner cavity therebetween, said one or more endoscopes being enclosed within said fluid-tight inner cavity;

g) introducing a gaseous sterilizing agent into said inner cavity through said input port to sterilize the outer surface of said one or more endoscopes;

h) applying a vacuum to said output port and expelling the gaseous sterilizing agent within said inner cavity by drawing the gaseous sterilizing agent through the endoscope(s) lumen(s) at subatmospheric pressure and through said connector and through said output port and out of said inner cavity.

5. A method as defined in claim 4 wherein said input port further comprises a first valve for automatically opening and closing said input port, and said output port further comprises a second valve for automatically opening and closing said output port, each of said valves having an open position and a closed position, wherein said first valve moves from said closed position to said open position upon engagement with a source of sterilizing solution, said first valve returning to said closed position upon removal from said source of sterilizing solution, and said second valve moves from said closed position to said open position upon engagement with a vacuum source, said second valve returning to said closed position upon removal from said vacuum source connector and through the passage of said output port and out of said cassette.

6. A method for sterilizing and storing endoscopes comprising the steps of:

a) providing one or more endoscopes, each of said endoscopes including an outer surface and at least one lumen;

b) providing a sealable cassette comprising;

i) a first container section;

ii) a second container section engagable with said first container section;

iii) an input port;

iv) an output port comprising a connector; and

c) connecting an end of each of the endoscope(s) to said connector;

d) engaging said first container section with said second container section to create a fluid-tight inner cavity therebetween, said one or more endoscopes being enclosed within said fluid-tight inner cavity;

e) introducing a gaseous sterilizing agent into said inner cavity through said input port to sterilize the outer surface of said one or more endoscopes;

f) applying a vacuum to said output port and expelling the gaseous sterilizing agent within said inner cavity by drawing the gaseous sterilizing agent through the endoscope(s) lumen(s) at subatmospheric pressure and through said connector and through said output port and out of said inner cavity.

7. A method for sterilizing and storing a lumened object, said method comprising the step of:

a) providing a lumened object, said object including an outer surface and at least one lumen;

b) providing a sealable cassette comprising;

i) a first container section;

ii) a second container section engagable with said first container section;

iii) an input port;

iv) an output port comprising a connector; and

c) connecting an end of the lumened object to said connector;

d) engaging said first container section with said second container section to create a fluid-tight inner cavity therebetween, said lumened object being enclosed within said fluid-tight inner cavity;

e) introducing a gaseous sterilizing agent into said inner cavity through said input port to sterilize the outer surface of said lumened object; and

f) applying a vacuum to said output port and expelling the gaseous sterilizing agent within said inner cavity by drawing the gaseous sterilizing agent through the lumen(s) of the object at subatmospheric pressure and through said connector and through said output port and out of said inner cavity.