Ostomy appliance and convex pressure ring assembly therefor
First Claim
1. An ostomy appliance comprising a collection pouch formed of plastic film having a wall provided with a stoma opening;
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
adhesive means along said proximal surface for adhesively securing said faceplate to peristomal skin surfaces of a wearer;
connecting means connecting said distal surface of said faceplate to said wall of said pouch about said stoma opening;
wherein the improvement comprisesa pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions;
said inner wall portion having a central opening aligned with said openings of said faceplate and pouch and having a convex proximally-directed curvature;
means securing the outer wall portion of said support ring to the proximal surface of said faceplate about said faceplate opening;
an intermediate ring of resilient, moisture-impermeable, thermoformable material secured to and extending over the convex proximal surface of said support ring; and
a barrier ring composed of soft, formable, moisture-absorbing skin barrier material of dry and wet tack secured to and covering the proximal surface of said intermediate ring.
1 Assignment
0 Petitions
Accused Products
Abstract
A convex pressure ring assembly, and its combination with an ostomy appliance, for exerting peristomal pressure to cause protrusion of a stoma into the openings of a faceplate and pouch and thereby promote more effective operation of the collection appliance. The pressure ring assembly is applied to the proximal (patient-facing) surface of the faceplate and includes a distal support ring of convex configuration formed of relatively rigid plastic, an intermediate ring of resilient, thermoformable material, and a proximal ring of soft, deformable, moisture-absorbing skin barrier material having both dry and wet tack.
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Citations
25 Claims
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1. An ostomy appliance comprising a collection pouch formed of plastic film having a wall provided with a stoma opening;
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
adhesive means along said proximal surface for adhesively securing said faceplate to peristomal skin surfaces of a wearer;
connecting means connecting said distal surface of said faceplate to said wall of said pouch about said stoma opening;
wherein the improvement comprisesa pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions;
said inner wall portion having a central opening aligned with said openings of said faceplate and pouch and having a convex proximally-directed curvature;
means securing the outer wall portion of said support ring to the proximal surface of said faceplate about said faceplate opening;
an intermediate ring of resilient, moisture-impermeable, thermoformable material secured to and extending over the convex proximal surface of said support ring; and
a barrier ring composed of soft, formable, moisture-absorbing skin barrier material of dry and wet tack secured to and covering the proximal surface of said intermediate ring. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
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8. An ostomy appliance comprising a collection pouch formed of plastic film having a wall provided with a stoma opening;
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
adhesive means along said proximal surface for adhesively securing said faceplate to peristomal skin surfaces of a wearer;
connecting means connecting said distal surface of said wall of said pouch about said stoma opening;
wherein the improvement comprisesa pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions;
said inner wall portion having a central opening aligned with said openings of said faceplate and pouch and having a convex proximally-directed curvature;
means securing the outer wall portion of said support ring to the proximal surface of said faceplate about said faceplate opening;
an intermediate ring of resilient, moisture-impermeable, thermoformable material secured to an extending over the convex proximal surface of said support ring;
a barrier ring composed of soft, formable, moisture-absorbing skin barrier material of dry and wet tack secured to and covering the surface of said intermediate ring;
said intermediate ring being formed of soft, resilient, thermoplastic foam, each of said foam and barrier rings having outer border portions extending radially outwardly beyond the periphery of said support ring; and
means adhesively securing said border portions to said proximal surface of said faceplate. - View Dependent Claims (9)
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
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10. An ostomy appliance comprising a collection pouch formed of plastic film having a wall provided with a stoma opening;
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
adhesive means along said proximal surface for adhesively securing said faceplate to peristomal skin surfaces of a wearer;
connecting means connecting said distal surface of said wall of said pouch about said stoma opening;
wherein the improvement comprisesa pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions;
said inner wall portion having a central opening aligned with said openings of said faceplate and pouch and having a convex proximally-directed curvature;
means securing the outer wall portion of said support ring to the proximal surface of said faceplate about said faceplate opening;
an intermediate ring of resilient, moisture-impermeable, thermoformable material secured to and extending over the convex proximal surface of said support ring;
a barrier ring composed of soft, formable, moisture-absorbing skin barrier material of dry and wet tack secured to an covering the surface of said intermediate ring;
said faceplate comprising a layer of thin, microporous sheet material, a layer of soft, deformable, moisture-absorbing skin barrier material having dry and wet tack extending over at least a portion of the proximal surface of said microporous layer; and
a layer of soft, resilient, fluid-impermeable, plastic foam being interposed between and secured to both said layer of microporous sheet material and said skin-barrier layer. - View Dependent Claims (14)
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
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11. An ostomy appliance comprising a collection pouch formed of plastic film having a wall provided with a stoma opening;
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
adhesive means along said proximal surface for adhesively securing said faceplate to peristomal skin surfaces of a wearer;
connecting means connecting said distal surface of said wall of said pouch about said stoma opening;
wherein the improvement comprisesa pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions;
said inner wall portion having a central opening aligned with said openings of said faceplate and pouch and having a convex proximally-directed curvature;
means securing the outer wall portion of said support ring to the proximal surface of said faceplate about said faceplate opening;
an intermediate ring of resilient, moisture-impermeable, thermoformable material secured to and extending over the convex proximal surface of said support ring; and
a barrier ring composed of soft, formable, moisture-absorbing skin barrier material of dry and wet tack secured to and covering the surface of said intermediate ring;
said connecting means comprising a coupling ring assembly;
said coupling ring assembly including a faceplate coupling ring secured to said faceplate and a pouch coupling ring attached to said pouch;
each of said coupling rings having latching portions permitting selective detachment and attachment thereof. - View Dependent Claims (12, 13)
- a flexible and generally planar faceplate having proximal and distal surfaces and having an opening therethrough aligned with said stoma opening of said pouch;
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15. A pressure ring assembly for an ostomy appliance including a collection pouch having a stoma opening and equipped wit a flexible faceplate having an opening aligned with the stoma opening of said pouch;
- said faceplate having an adhesive proximal surface for peristomal attachment to a wearer;
said pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions;
said inner wall portion having a central opening alignable with the openings of a faceplate and pouch and having a convex curvature projecting in a proximal direction;
said outer wall portion being adapted for attachment to the proximal surface of a faceplate about the opening thereof;
an intermediate ring of soft, resilient, moisture-impermeable, thermoplastic material secured to and extending over the convex proximal surface of said support ring; and
a barrier ring composed of soft, deformable, moisture-absorbing skin barrier material of dry and wet tack secured to covering the proximal surface of said intermediate ring. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
- said faceplate having an adhesive proximal surface for peristomal attachment to a wearer;
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23. A pressure ring assembly for an ostomy appliance including a collection pouch having a stoma opening and equipped with a flexible faceplate having an opening aligned with the stoma opening of said pouch;
- said faceplate having an adhesive proximal surface for peristomal attachment to a wearer;
said pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions; and
inner wall portion having a central opening alignable with the openings of a faceplate and pouch and having convex curvature projecting in a proximal direction;
said outer wall portion being adapted for attachment to the proximal surface of a faceplate about the opening thereof; and
intermediate ring of soft, resilient, moisture-impermeable, thermoplastic material secured to and extending over the convex proximal surface of said support ring; and
a barrier ring composed of soft, deformable, moisture-absorbing skin barrier material of dry and wet tack secured to covering the proximal surface of said intermediate ring;
said assembly also including a faceplate as an element of said assembly;
means securing the outer wall portion of said support ring to a proximal surface of said faceplate;
said faceplate having its distal surface connected to a faceplate coupling ring adapted for detachable connection to a mating coupling ring of a collection pouch. - View Dependent Claims (25)
- said faceplate having an adhesive proximal surface for peristomal attachment to a wearer;
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24. A pressure ring assembly for an ostomy appliance including a collection pouch having a stoma opening and equipped with a flexible faceplate having an opening aligned with the stoma opening of said pouch;
- said faceplate having an adhesive proximal surface for peristomal attachment to a wearer;
said pressure ring assembly including a relatively rigid support ring having an annular wall with inner and outer wall portions;
said inner wall portion having a central pg,31 opening alignable with the openings of a faceplate and pouch and having convex curvature projecting in a proximal direction;
said outer wall portion being adapted for attachment to the proximal surface of a faceplate about the opening thereof;
an intermediate ring of soft, resilient, moisture-impermeable, thermoplastic material secured to an extending over the convex proximal surface of said support ring; and
a barrier ring composed of soft, deformable, moisture-absorbing skin barrier material of dry and wet tack secured to covering the proximal surface of said intermediate ring;
said wall of said rigid support ring including distally-projecting integral latching means for detachable coupling a collection pouch thereto;
said support ring having a distally-facing concave surface defining a cavity;
said latching means being located within said cavity.
- said faceplate having an adhesive proximal surface for peristomal attachment to a wearer;
Specification