Peritoneal dialysis delivery unit using home-prepared dialysate

Claim 2

In combination, a container defining a fluid retention chamber therein, the wall of which container has a recess therein, the relatively distal end of which recess has a port therein that opens into the chamber of the container, and the edge of which port is spaced relatively radially inwardly from the inner peripheral wall of the recess, so as to define a seat about the edge of the port on said end; a spike pierceable sealing element which is capable of self-sealing with the spike piercing the same, and which is releasably engaged in the port, so as to close the same, the relatively proximal end portion of the sealing element having a flange connected therewith, in the recess, the diameter of which flange is greater than that of the port at its edge, but lesser that that of the recess at the inner peripheral wall thereof, so that the sealing element is disengageable from the port in the direction relatively toward the proximal end of the recess; and a keeper element which is releasably engaged in the recess and abutted against the sealing element, so as to clamp the flange of the sealing element between the keeper element and the seat, for retention of the sealing element in the port during the spike piercing operation, and which moreover, is annulated, so that the spike can be impaled therethrough for the piercing operation.

Claim 3

The combination according to claim 1 wherein the keeper element is reciprocably engaged in the recess, for insertion in and release from the recess through the proximal end thereof.

Claim 4

The combination according to claim 1 wherein the sealing element is elastomeric in nature, the flange is integral therewith, and the keeper element has an annular rib raised on the abutting, relatively distal end thereof, which is spaced relatively radially inwardly from the outer periphery of the flange, and interengaged with the sealing element, in the abutting, relatively proximal end portion thereof.

Claim 5

The combination according to claim 1 wherein the sealing element is elastomeric in nature, the flange is integral therEwith, and the relatively distal end portion of the sealing element has an interiorly stepped recess therein, extending toward the relatively proximal end of the sealing element, but terminating short of the latter end, so that a membraneous web remains thereacross, within the bounds of the flange.

Claim 6

The combination according to claim 1 wherein the container has means associated therewith for heating the fluid in the chamber.

Claim 7

The combination according to claim 1 wherein the keeper element is washer-like and threadedly engaged in the recess.

Claim 8

The combination according to claim 6 wherein the recess is defined by an interiorly threaded bushing on the wall of the container.

Claim 9

In a peritoneal dialysis delivery system, a pressure boiler having a liquid retention chamber therein, and means associated therewith for heating the liquid in the chamber, the wall of which boiler has a recess therein, the relatively distal end of which recess has a port therein that opens into the chamber of the boiler, and the edge of which port is spaced relatively radially inward from the inner peripheral wall of the recess, so as to define a seat about the port on said end; a spike pierceable sealing element which is capable of self-sealing with the spike piercing the same, and which is releasably engageable in the port, to close the same, the relatively proximal end portion of the sealing element having a flange connected therewith, the diameter of which flange is greater than that of the port at its edge, but lesser than that of the recess at the inner peripheral wall thereof, so that the flange is engageable with the seat when the sealing element is engaged in the port through the relatively proximal end of the recess; and a keeper element which is releasably engageable in the recess, for abutment against the flange, to clamp the flange between the keeper element and the seat, for retention of the sealing element in the port during the spike piercing operation, and which moreover, is annulated, so that the spike can be impaled therethrough for the piercing operation.

Claim 10

In a peritoneal dialysis delivery system, a pressure boiler having a liquid retention chamber therein, and means associated therewith for heating the liquid in the chamber, the wall of which boiler has a recess therein, the relatively distal end of which recess has a port therein that opens into the chamber of the boiler, and the edge of which port is spaced relatively radially inward from the inner peripheral wall of the recess, so as to define a seat about the port on said end; a spike pierceable sealing element which is capable of self-sealing with the spike piercing the same, and which is releasably engageable in the port, to close the same, the relatively proximal end portion of the sealing element having a flange connected therewith, the diameter of which flange is greater than that of the port at its edge, but lesser than that of the recess at the inner peripheral wall thereof, so that the flange is engageable with the seat when the sealing element is engaged in the port through the relatively proximal end of the recess; and a keeper element which is releasably engageable in the recess, for abutment against the flange, to clamp the flange between the keeper element and the seat, for retention of the sealing element in the port during the spike piercing operation, and which moreover, is annulated, so that the spike can be impaled therethrough for the piercing operation.

Claim 11

In combination, a pressure boiler having a liquid retention chamber therein, and means associated therewith for heating the liquid in the chamber, the wall of which boiler has a recess therein, the relatively distal end of which recess has a port therein that opens into the chamber of the boiler, and the edge of which port is spaced relatively radially inward from the inner peripheral wall of the recess, so as to define a seat about the port on said end; a spike pierceable sealing element which is capable of self-sealing with the spike piercing the same, and which is releasably engageable in the port, to close the same, the relatively proximal end portion of the sealing element having a flange connected therewith, the diameter of which flange is greater than that of the port at its edge, but lesser than that of the recess at the inner peripheral wall thereof, so that the flange is engageable with the seat when the sealing element is engaged in the port through the relatively proximal end of the recess; and a keeper element which is releasably engageable in the recess, for abutment against the flange, to clamp the flange between the keeper element and the seat, for retention of the sealing element in the port during the spike piercing operation, and which moreover, is annulated, so that the spike can be impaled therethrough for the piercing operation.

Claim 12

In combination, a pressure boiler having a liquid retention chamber therein, and means associated therewith for heating the liquid in the chamber, the wall of which boiler has a recess therein, the relatively distal end of which recess has a port therein that opens into the chamber of the boiler, and the edge of which port is spaced relatively radially inward from the inner peripheral wall of the recess, so as to define a seat about the port on said end; a spike pierceable sealing element which is capable of self-sealing with the spike piercing the same, and which is releasably engageable in the port, to close the same, the relatively proximal end portion of the sealing element having a flange connected therewith, the diameter of which flange is greater than that of the port at its edge, but lesser than that of the recess at the inner peripheral wall thereof, so that the flange is engageable with the seat when the sealing element is engaged in the port through the relatively proximal end of the recess; and a keeper element which is releasably engageable in the recess, for abutment against the flange, to clamp the flange between the keeper element and the seat, for retention of the sealing element in the port during the spike piercing operation, and which moreover, is annulated, so that the spike can be impaled therethrough for the piercing operation.

Claim 13

The combination according to claim 9 wherein the sealing element is elastomeric in nature, the flange is integral therewith, and the relatively distal end portion of the sealing element has an interiorly stepped recess therein, extending toward the relatively proximal end of the sealing element, but terminating short of the latter end, so that a membraneous web remains thereacross within the bounds of the flange.

Claim 14

The combination according to claim 10 wherein the keeper element has an annular rib raised on the relatively distal end thereof, which has a lesser diameter than that of the relatively proximal end of the sealing element, so as to interengage with the sealing element, in the relatively proximal end portion thereof.

Claim 15

In combination, a container defining a fluid retention chamber therein, the wall of which container has a recess therein, the relatively distal end of which recess has a port therein that opens into the chamber of the container, and the edge of which port is spaced relatively radially inwardly from the inner peripheral wall of the recess, so as to define a seat about the port on said end; a spiked-pierceable sealing element releasably engaged in the port, so as to close the same, the relatively proximal end portion of the sealing element having a flange connected therewith, in the recess, the diameter of which flange is greater than that of the port at its edge, but lesser than that of the recess at the inner peripheral wall thereof, so that the sealing element is disengageable from the port in the direction relatively toward the proximal end of the recess; an annulated keeper element which is releasably engaged in the recess and abutted against the sealing element, so as to clamp the flange of the sealing element between the keeper element and the seat; and a tubular spike impaled through the keeper element, and the sealing element, the bore of which is in communication with the chamber, and the tubular body of which is in sealed engagement with the sealing element.

Claim 16

In combination, a container defining a fluid retention chamber therein, the wall of which container has a recess therein, the relatively distal end of which recess has a port therein that opens into the chamber of the container, and the edge of which port is spaced relatively radially inwardly from the inner peripheral wall of the recess, so as to define a seat about the port on said end; a spiked-pierceable sealing element releasably engaged in the port, so as to close the same, the relatively proximal end portion of the sealing element having a flange connected therewith, in the recess, the diameter of which flange is greater than that of the port at its edge, but lesser than that of the recess at the inner peripheral wall thereof, so that the sealing element is disengageable from the port in the direction relatively toward the proximal end of the recess; an annulated keeper element which is releasably engaged in the recess and abutted against the sealing element, so as to clamp the flange of the sealing element between the keeper element and the seat; and a tubular spike impaled through the keeper element, and the sealing element, the bore of which is in communication with the chamber, and the tubular body of which is in sealed engagement with the sealing element.

Claim 17

The combination according to claim 12 wherein the sealing element is elastomeric in nature, the flange is integral therewith, and the relatively distal end portion of the sealing element has an interiorly stepped recess therein, extending toward the relatively proximal end of the sealing element, but terminating short of the latter end, so that a membraneous web remains thereacross, within the bounds of the flange; and wherein the spike pierces the web and extends through the recess in the sealing element, to a point at which the bore thereof communicates with the chamber, adjacent the relatively distal end of the sealing element.

Claim 18

The combination according to claim 12 wherein the spike has an ear thereon which is received within the opening of the keeper element, and there is a U-shaped retainer element releasably engaged in the recess, on the opposite side of the ear from the sealing element, to retain the spike in position in the various elements.