Ostomy pouch coupling having continuous helical threads

• US 5,312,381 A
• Filed: 03/05/1993
• Issued: 05/17/1994
• Est. Priority Date: 03/05/1993
• Status: Expired due to Term

• Current Assignee: Patrick J. Brooks
• Original Assignee: James P. Brooks
• Inventors: Brooks, James P.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): CLARKE, ROBERT A
• Application Number:
  US08/027,020
• Time in Patent Office: 438 Days
• Field of Search: 604/332, 604/338, 604/339, 604/342, 604/345
• US Class Current: 604/338
• CPC Class Codes: A61F 5/448 Means for attaching bag to seal ring

Abstract

An ostomy coupling device comprises a faceplate for placing over the stoma including a neck having outwardly facing threads, and a generally cylindrically shaped screw coupling having threads on the inner surface thereof. The narrow portion of an ostomy pouch is placed over the neck, and the screw coupling is thereafter rotated onto the neck, whereby the aperture collar of the pouch is conformed to the space between the matching threads of the screw coupling and faceplate, thereby providing a seal between the pouch and the stomal aperture.

Claims

1. An ostomy coupling apparatus generally including a faceplate surrounding a stoma, an ostomy pouch for collecting digestive system drainage, and a coupling for securing the pouch to the faceplate, the improvement comprising:

a) a faceplate made from a resilient and deformable material, having an aperture extending through the center thereof for communication with the stoma and including a first surface provided with means for sealably contacting said faceplate against the patient'"'"'s skin surrounding the stoma, and an outwardly facing helically threaded neck extending from a second surface of said faceplate opposite the first surface and coaxial with the aperture, the threaded neck including an annular shoulder generally located where the threaded neck and said faceplate are joined and a top surface at the distal portion of the neck opposite said faceplate; and

b) a screw coupling, including a cylindrical wall having continuous helical threads formed on an inwardly facing surface thereof adapted to engage the threaded neck of said faceplate, a bottom surface located at the end of the cylindrical wall to engage the shoulder on the neck of said faceplate, and a lip extending radially inwardly from the end of the wall opposite the bottom surface to engage the top surface at the distal portion of the neck;

whereby the ostomy pouch, having an inner surface and an aperture collar adapted for connecting to said faceplate, may be secured to the faceplate by positioning the aperture collar of the pouch such that the inner surface is adjacent the threaded neck of said faceplate, and thereafter rotatably engaging the inwardly facing continuous helical threads of said screw coupling over the threaded neck of said faceplate, and such that the inner surface of the ostomy pouch is sealed by the engagement of the collar of the ostomy pouch between the top surface of the neck and the lip of the screw coupling, between the helical threads of said screw coupling and the helical threads of the neck, and between the bottom surface of said screw coupling and the shoulder of said faceplate and said continuous helical threads of said screw coupling continue at least 360 degrees around the cylindrical wall.

2. The ostomy coupling apparatus defined in claim 1 wherein said means for sealably contacting said faceplate against the patient'"'"'s skin includes an annular recess in the first surface of said faceplate and concentric with the aperture therethrough, adapted to receive a skin barrier adhesive wafer.

3. The ostomy coupling apparatus defined in claim 1 wherein said means for sealably contacting said faceplate against the patient'"'"'s skin includes an adhesive means applied to the first surface of said faceplate about said aperture whereby a removable seal is formed between said faceplate and the patient'"'"'s skin surrounding the stoma.

4. The ostomy coupling apparatus defined in claim 1 wherein said faceplate is formed of a material selected from the group consisting of low density polyethylene, polypropylene, and polyurethane;

and said screw coupling is formed of a material selected from the group consisting of polyvinylidine chloride, polyester, polycarbonate and polyurethane.

5. The ostomy coupling apparatus defined in claim 1 wherein the helical threads on said screw coupling have a slightly larger diameter than the helical threads on said neck to provide adequate space therebetween for the positioning and deformation of the aperture collar on the ostomy pouch.

6. An ostomy coupling apparatus generally including a faceplate surrounding a stoma, an ostomy pouch for collecting digestive system drainage, and a coupling for securing the pouch to the faceplate, the improvement comprising:

a) a faceplate made from a resilient and deformable material, having an aperture extending through the center thereof for communication with the stoma and including a first surface provided with means for sealably contacting said faceplate against the patient'"'"'s skin surrounding the stoma, a neck having an outward facing, continuous helical thread, the neck extending from a second surface of said faceplate opposite the first surface and coaxial with the aperture, the threaded neck including an annular shoulder generally located where the threaded neck and said faceplate are joined and a top surface at the distal portion of the neck opposite said faceplate; and

b) a screw coupling, including a cylindrical wall having continuous helical threads formed on an inwardly facing surface thereof, the threads of said screw coupling having a slightly larger diameter than the threads of the neck of said faceplate to facilitate the positioning and engagement of the ostomy pouch between the helical threads of the neck and said screw coupling, a bottom surface located at the end of the cylindrical wall to engage the shoulder on the neck of said faceplate, and a lip extending radially inwardly from the end of the wall opposite the bottom surface to engage the top surface at the distal portion of the neck;

whereby the ostomy pouch, having an inner surface and an aperture collar adapted for connecting to said faceplate, may be secured to the faceplate by positioning the aperture collar of the pouch such that the inner surface is adjacent the threaded neck of said faceplate, and thereafter rotatably engaging the inwardly facing helical threads of said screw coupling over the threaded neck of said faceplate, and such that the inner surface of the ostomy pouch is sealed by the engagement of the collar of the ostomy pouch between the top surface of the neck with the lip of the screw coupling, between the helical threads of said screw coupling and the helical threads of the neck, and between the bottom surface of said screw coupling and the shoulder of said faceplate and said continuous helical threads of said screw coupling continue at least 360 degrees around the cylindrical wall.