Wound treatment apparatus

• US 6,755,807 B2
• Filed: 11/29/2000
• Issued: 06/29/2004
• Est. Priority Date: 11/29/1999
• Status: Expired due to Term

• Current Assignee: KCI Licensing Incorporated (3M Company)
• Original Assignee: Hill-Rom Services Incorporated (Baxter International Inc.)
• Inventors: Henley, Alan Wayne, Sanderson, Ronald Leslie, Risk, James Robert Jr., Petrosenko, Robert
• Primary Examiner(s): Calvert, John J.
• Assistant Examiner(s): TRUONG, LINH T
• Application Number:
  US09/725,666
• Publication Number:
  US 20020161317A1
• Time in Patent Office: 1,308 Days
• Field of Search: 604/305-308, 604/319-323, 604/35, 604/118-121, 604/259, 604/315-316, 604/540-544, 604/902, 606/131
• US Class Current: 604/319
• CPC Class Codes: A61M 1/742 by changing the size of a vent A61M1/7411 takes precedence
• CPC Class Codes: A61M 1/743 by changing the cross-section of the line, e.g. flow regulating valves A61M1/7413 takes precedence
• CPC Class Codes: A61M 1/77 Suction-irrigation systems aspiration tips supplying fluids A61M1/85; specific for negative pressure wound therapy A61M1/92; combined with tracheal tubes A61M16/0463
• CPC Class Codes: A61M 1/784 by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
• CPC Class Codes: A61M 1/882 Draining devices provided with means for releasing antimicrobial or gelation agents in the drained fluid
• CPC Class Codes: A61M 1/918 for multiple suction locations
• CPC Class Codes: A61M 1/92 with liquid supply means
• CPC Class Codes: A61M 1/962 having pumping means on the suction site, e.g. miniature pump on dressing or dressing capable of exerting suction
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 27/00 Drainage appliance for wounds or the like , i.e. wound drains, implanted drains negative pressure wound therapy devices A61M1/90; implements for holding wound open A61B17/02 ; middle ear drainage A61F11/202
• CPC Class Codes: A61M 35/00 Devices for applying media, e.g. remedies, on the human body devices for handling toiletry or cosmetic substances A45D; absorbent pads, e.g. swabs, A61F13/15

Abstract

A control system for use with a vacuum bandage over a wound includes a vacuum pump, a waste canister operably coupled to the pump, and a fluid source. The canister is coupled to the bandage such that, when a vacuum is applied to the canister, the vacuum is applied to the bandage. The fluid source is coupled to the bandage to selectively introduce fluid into the wound.

Claims

1. Disposables, in combination with a housing, for use with a vacuum bandage of the type which covers a wound and wherein a vacuum is formed in the space above the wound,

the housing including a controller, a canister mount, a syringe mount configured to hold a syringe, and the controller configured to create the vacuum in the space above the wound,

the disposables comprising:

a waste canister mateable with the canister mount;

a tube set configured to be coupled to the waste canister, the syringe, and the bandage; and

the tube set connecting the vacuum to the bandage through the canister.

2. The disposables of claim 1, comprising a pair of waste canisters to be mated with a pair of canister mounts for use with a pair of bandages, and the tube set to be coupled to each of the waste canisters and each of the bandages.

3. A canister, in combination with a housing, for use with a vacuum wound bandage,

the housing including a control apparatus, the control apparatus connecting a vacuum to the bandage,

the canister comprising:

a container having an outer wall and an inlet port, the container insertable into a cavity in the control apparatus; and

wherein both the outer wall and inlet port of the container are substantially flush with an exterior wall of the housing when the container is inserted into the cavity.

4. The canister of claim 3, wherein the inlet port includes a valve to prevent fluid in the container from exiting the canister.

5. The canister of claim 4, wherein the valve is a check valve.

6. The canister of claim 3, wherein the outlet port includes a filter that prevents fluid in the container from exiting the canister.

7. The canister of claim 6, wherein the filter is a hydrophobic filter.

8. The canister of claim 3, wherein the vacuum is introduced to the bandage from the inlet port.

9. The canister of claim 6, wherein the inlet port is provided above the outlet port relative to a plane defined by the level of fluid collected in the container.

11. The canister of claim 3, further comprising a liquid solidifier material in the container.

12. The canister of claim 9, wherein the canister is a disposable canister.

14. The canister of claim 6, wherein the inlet port communicates with a tube coupled to the bandage, the tube being configured to receive fluid and exudate from the wound.

15. The canister of claim 3, in which the canister is further configured and shaped with a hand grip to selectively remove the canister from the cavity.

16. The canister of claim 3, in which the container is further configured and shaped to provide an air-tight seal between the container and the cavity.

10. For use with a control apparatus providing a vacuum source and a shaped cavity having a suction port leading to the vacuum, and a bandage of the type which covers a wound and within which a vacuum, generated by the control apparatus, is formed in a space above the wound, a canister comprising:

a container configured and shaped to be inserted into the shaped cavity;

the container having an inlet port configured to be in communication with the bandage, the inlet port configured to receive fluid and exudate from the wound and deposit the fluid and exudate in the container;

the container having an outlet port positioned to engage the suction port of the control apparatus, the outlet port being configured to introduce the vacuum from the control apparatus to the container, the outlet pod including a filter that prevents fluid in the container from exiting the canister;

the inlet port being provided above the outlet port relative to a plane defined by the level of fluid collected in the container; and

wherein when the level of fluid is positioned above the outlet port, the vacuum is caused to cease, indicating that the container is full.

13. The canister of claim 10, wherein the outlet port communicates with a vacuum pump in the control apparatus.