Drainage bag assembly with flow control for body fluids

Claim 2

A drainage bag assembly adapted to contain body wastes received from the body of a patient, said bag comprising an outer envelope having a lower outlet opening and a receiving opening in an upper portion adapted to pass body wastes thereinto, and valve means for closing the outlet opening of the envelope to retain the wastes in said envelope, said valve means including a diaphragm traversing the lower outlet opening being biased to a position normally closing the opening and means for selectively flexing the diaphragm to an open position for removal of wastes from said envelope.

Claim 3

A drainage bag assembly as set forth in claim 1 wherein said outer envelope is generally oval-shaped.

Claim 4

A drainage bag assemblY as set forth in claim 2 wherein the longest dimension of the outer envelope is adapted to extend downwardly in a dependent manner from the body of the patient.

Claim 5

A drainage bag assembly as set forth in claim 1 including an inner envelope disposed within said outer envelope having front and rear walls connected along their outer top and side edges and having a downwardly convergent lower extension with opposed wall portions normally held flat against one another to define unidirectional flow means, there being an outlet opening along the bottom edge of said downwardly convergent lower extension of said inner envelope.

Claim 6

A drainage bag assembly as set forth in claim 4 wherein said outer and inner envelopes are composed of a thin film plastic material.

Claim 7

A drainage bag assembly as set forth in claim 1 wherein said outer envelope is transparent to permit visual inspection of the waste material contained therein.

Claim 8

A flexible drainage bag assembly adapted to contain a fluid received from the body of a patient, said bag assembly comprising an outer envelope having a narrowed lower extension with a bottom outlet opening, said outer envelope having a receiving opening in an upper portion adapted to pass body fluids thereinto, an inner envelope including unidirectional flow control means disposed in the outer envelope between the receiving opening and the outlet opening and arranged to divide the outer envelope into an upper receiving chamber and a lower storage chamber, said unidirectional flow control means permitting fluid flow delivered into said inlet opening into said lower storage chamber but inhibiting flow from the lower storage chamber back to the receiving opening, and valve means in the form of an upwardly concave resilient diaphragm traversing the outlet opening of the outer envelope and biased to a closed position across the outlet opening to retain the body fluids in the lower storage chamber of said outer envelope.

Claim 9

A flexible drainage bag assembly adapted to contain a fluid received from the body of a patient, said bag assembly comprising an outer envelope having a narrowed lower extension with a bottom outlet opening, said outer envelope having a receiving opening in an upper portion adapted to pass body fluids thereinto, an inner envelope including unidirectional flow control means disposed in the outer envelope between the receiving opening and the outlet opening and arranged to divide the outer envelope into an upper receiving chamber and a lower storage chamber, said unidirectional flow control means permitting fluid flow delivered into said inlet opening into said lower storage chamber but inhibiting flow from the lower storage chamber back to the receiving opening, and valve means in the form of an upwardly concave resilient diaphragm traversing the outlet opening of the outer envelope and biased to a closed position across the outlet opening to retain the body fluids in the lower storage chamber of said outer envelope.

Claim 10

A flexible drainage bag assembly as set forth in claim 7 wherein said valve means includes an integral outer hollow body having an opening, said resilient diaphragm traversing the lower end of the body, said body having an outlet opening in a side thereof, and an inner ring in the body adjacent to the outlet opening having an edge normally in engagement with the diaphragm to close off flow through the outlet opening, said diaphragm being selectively movable away from the inner ring to pass the body fluids contained in the outer envelope through said outlet opening.

Claim 11

A flexible drainage bag assembly as set forth in claim 8 wherein said diaphragm has a downwardly depending section, an arcuate section aligned with the outlet opening and a section connecting the depending and arcuate sections for the movement of the diaphragm to the open position.

Claim 12

A flexible drainage bag assembly adapted to be releasably mounted on a flanged holder shield positioned on the body of a patient comprising: a pair of first, generally oval-shaped front and rear walls connected at their outer edges along the top and side edge to define an outer fluid-containing envelope, said outer envelope having a narrowed lower extension with a bottom outlet opening, said rear wall having a receiving opening in an upper portion surrounded by a flexible sealing ring assembly adapted to releasably engage the flange of the holder shield in a sealed engagement to receive body fluids therethrough, a pair of second front and rear walls disposed within said outer envelope and connected at their outer edges along the top and side edges to define an inner envelope within said inner envelope and dividing the outer envelope into an upper receiving chamber and a lower storage chamber, said inner envelope having a downwardly convergent lower extension with a bottom opening defining a unidirectional flow control valve permitting fluid flow delivered into said receiving opening into said lower storage chamber but inhibiting fluid flow from the lower storage chamber baCk into the upper receiving chamber, the rear wall of said inner envelope being joined to the rear wall of said outer envelope to define a common peripheral edge of the receiving opening, and a resilient reinforcing ring disposed at the common peripheral edge of the opening adapted to be releasably mounted in an annular groove on the holder shield.

Claim 13

A flexible drainage bag assembly adapted to be releasably mounted on a flanged holder shield positioned on the body of a patient comprising: a pair of first, generally oval-shaped front and rear walls connected at their outer edges along the top and side edge to define an outer fluid-containing envelope, said outer envelope having a narrowed lower extension with a bottom outlet opening, said rear wall having a receiving opening in an upper portion surrounded by a flexible sealing ring assembly adapted to releasably engage the flange of the holder shield in a sealed engagement to receive body fluids therethrough, a pair of second front and rear walls disposed within said outer envelope and connected at their outer edges along the top and side edges to define an inner envelope within said inner envelope and dividing the outer envelope into an upper receiving chamber and a lower storage chamber, said inner envelope having a downwardly convergent lower extension with a bottom opening defining a unidirectional flow control valve permitting fluid flow delivered into said receiving opening into said lower storage chamber but inhibiting fluid flow from the lower storage chamber baCk into the upper receiving chamber, the rear wall of said inner envelope being joined to the rear wall of said outer envelope to define a common peripheral edge of the receiving opening, and a resilient reinforcing ring disposed at the common peripheral edge of the opening adapted to be releasably mounted in an annular groove on the holder shield.

Claim 14

A flexible drainage bag assembly as set forth in claim 10 wherein said receiving opening has its center approximately midway between the center of the oval shape and the upper edge of the envelope, the receiving opening terminating below said upper edge.

Claim 15

A drainage bag assembly as set forth in claim 10 wherein said closing means for the outlet opening of the envelope includes a narrow lower extension projecting downwardly from the bottom of the envelope and folded back on itself, and means to retain the lower extension in the folded position.

Claim 16

A drainage bag assembly as set forth in claim 10 wherein said resilient reinforcing ring is in the form of a flexible O-ring interposed between the inner peripheral edges of the inner and outer envelopes.

Claim 17

A drainage bag assembly as set forth in claim 10 wherein said resilient reinforcing ring is defined by a resilient band made integral with the outer envelope.