Ostomy device with improved coupling system

• US 5,195,996 A
• Filed: 01/09/1991
• Issued: 03/23/1993
• Est. Priority Date: 05/30/1990
• Status: Expired due to Term

• Current Assignee: Convatec Incorporated (ConvaTec Group Plc)
• Original Assignee: E R Squibb & Sons Incorporated
• Inventors: Leise, Walter F. Jr., Edwards, John V., Cline, John B.
• Primary Examiner(s): Shay, Randy C.
• Assistant Examiner(s): GUALTIERI, GINA
• Application Number:
  US07/639,105
• Time in Patent Office: 804 Days
• Field of Search: 604/327-332, 604/335-339, 604/342
• US Class Current: 604/338
• CPC Class Codes: A61F 5/448 Means for attaching bag to seal ring

Abstract

In the first embodiment, the faceplate coupling ring is of conventional design and includes an axially extending rib with a radially outwardly extending rim and a radially inwardly extending deflectable sealing strip. The pouch coupling ring includes inner and outer spaced walls, forming a channel for receiving the rib. First and second protrusions extend inwardly from points on the interior surface of the walls proximate the ends thereof. The first protrusion cooperates with the rim and the second protrusion cooperates with the tip of the sealing strip, to securely retain the rib within the channel. The walls of the channel have reduced thickness and are easily deflectable as the rib is inserted into the channel, such that coupling of the rings is facilitated but decoupling requires the conventional amount of force due to the second protrusion. In the second embodiment, the deflectable sealing strip on the faceplate coupling ring is replaced by a rigid flange which cooperates with the second protrusion to substantially increase the decoupling force.

Claims

1. An ostomy device comprising waste collection means, faceplate means attachable to a peristomal surface and means for detachably mounting said collection means on said faceplate means, said mounting means comprising first and second coupling means affixed to said collection means and said faceplate means, respectively, one of said coupling means comprising substantially axially extending rib means comprising a body rim means extending in a substantially radial direction from and outwardly of said body, and sealing flange means extending in said substantially radial direction from and inwardly from said body, said body being substantially non-deformable in said radial direction, said other of said coupling means comprising channel means for removably receiving said rib means, said channel means comprising spaced inner and outer walls and a connecting wall, each having an interior surface, said outer wall and said inner wall comprising first and second protrusions, respectively, extending from points on said interior surfaces of said outer and inner walls proximate the ends of said walls remote from said connecting wall, said inner wall being formed of substantially deflectable material, said flange means causing said inner wall to deflect to a significant degree when said rib means is received in said channel means, said first protrusion cooperating with said rim means and said second protrusion cooperating with said flange means to securely retain said rib means within said channel means.

2. The device of claim 1 wherein said sealing flange means has a generally solid triangular cross-sectional configuration.

3. The device of claim 1 wherein said flange means is defined by a first surface extending substantially radially inwardly from a interior surface of said rib means and a second surface extending at an incline from a point proximate an edge of said first surface to a point on said interior surface of said rib means proximate the edge thereof.

4. The device of claim 1 further comprising reinforced pull tab means extending substantially radially outwardly from said channel means.

5. The device of claim 4 wherein said pull tab means comprises substantially radially extending spaced rib means.

6. The device of claim 1 wherein said body is substantially solid and non-grooved.

7. An ostomy device comprising waste collection means, faceplate means attachable to a peristomal surface, means for detachably coupling said collection means on said faceplate means, said coupling means comprising first and second coupling rings affixed to said collection means and said faceplate means, respectively, said first coupling means comprising substantially radially extending pull tab means, said pull tab means comprising a base and substantially triangular radially extending means for reinforcing said base to increase the strength thereof, said substantially triangular radially extending means having a first side and a second side, said first side being located adjacent and extending axially along said ring of said first coupling means, and said second side extending radially outward along said base of said pull tab means.

8. The device of claim 7 wherein said reinforcing means comprises spaced, substantially parallel reinforcing rib means.