Seal for a rectal or ostomy appliance
AssigneeConvatec Technologies Inc.
InventorBret Weig
Life of this patent
Estimating the term…
Abstract
A rectal appliance with a tubular member defining a communication passage for body waste, and first and second inflatable chamber portions carried on the tubular member for forming internal and external seals with respect to the anus. One or both of the inflatable chamber portions have a partly flared shape. The second inflatable chamber portion has a low external profile, and a concave sealing surface. The inflatable chamber portions are defined at least partly by a common flexible membrane that is constrained near a middle region to define a narrow waist between the two inflatable chamber portions.
Claims21
A rectal appliance comprising:
- a tubular member defining a communication passage for body waste;
- a membrane carried on said tubular member, said membrane at least partly defining:
- (i) a first inflatable chamber portion for forming an internal seal against internal tissue of the anus;
- (ii) a second inflatable chamber portion for forming an external seal against perianal tissue;
- wherein at least a portion of the membrane is fixed relative to said tubular member at an intermediate position intermediate the ends of the tubular member to define a narrow waist region between the first and second inflatable chamber portions;
- and
- (iii) a plurality of corrugated inflatable columns intermediate the ends of the tubular member, defining passageways for inflation fluid and pathways for escape of flatus.
A rectal appliance comprising:
- a tubular member defining a communication passage for body waste;
- and
- an external inflatable chamber portion of closed loop shape located around the tubular member, for sealing against perianal skin, the external inflatable chamber portion being defined at least partly by a flexible membrane and a flexible or elastic rear wall that are mutually attached together along a seam of closed loop shape and, a plurality of inflatable columns intermediate the ends of the tubular member, defining passageways for inflation fluid and;
- an internal inflatable chamber portion of closed loop shape located around the tubular member, for sealing against internal tissue.
A rectal appliance comprising:
- a tubular member defining a communication passage for body waste, and carrying a flange at or near one end;
- an external inflatable chamber portion of closed-loop shape and located around the tubular member, for sealing against perianal skin, the external inflatable chamber portion having a shape defined at least partly by the flange and a plurality of corrugated inflatable columns intermediate the ends of the tubular member defining passageways for inflation fluid and pathways for escape of flatus and;
- an internal inflatable chamber portion of closed loop shape extending around the tubular member, for sealing against internal tissue.
Dependencies are inferred from the claim text.