Accessory module for implantable fluid dispensing device

Claim 2

An implantable fluid dispensing device comprising: a sealed case having a smooth biocompatible curved surface; the case having an indentation inwardly diverging from the curved surface; and an accessory housing shaped to mount on the case in the indentation and shaped to conform generally to the curved surface.

Claim 5

The device of claim 2 further comprising filter means mounted in the accessory housing for filtering the fluid as it passes from the inlet means to the second outlet means.

Claim 6

The device of claim 2 further comprising: port means on the accessory housing for receiving fluid to be passed through the accessory housing and out the second outlet means.

Claim 7

The device of claim 4 wherein the port means includes a pierceable septum for receiving fluid from a hypodermic needle inserted through skin of the patient.

Claim 8

An implantable fluid dispensing device comprising: a sealed case having a fluid storage reservoir; fluid outlet means on the case for passing fluid from the reservoir to the exterior of the case; the case having a curved shape and having a shelf stepped in from the curved shape; an accessory housing shaped to mount in the shelf and to conform generally to the external curved surface; accessory fluid inlet means in the accessory housing for coupling to the fluid outlet means on the case and for passing fluid into the accessory housing; filter outlet means in the accessory housing for passing fluid from the accessory housing into a patient's body; and filter means mounted in the accessory housing for filtering fluid passing from the accessory fluid inlet to the accessory fluid outlet.

Claim 9

An implantable fluid dispensing device comprising: a sealed case having a fluid storage reservoir; fluid outlet means on the case for passing fluid from the reservoir to the exterior of the case; the case having a curved shape and having a shelf stepped in from the curved shape; an accessory housing shaped to mount in the shelf and to conform generally to the external curved surface; accessory fluid inlet means in the accessory housing for coupling to the fluid outlet means on the case and for passing fluid into the accessory housing; filter outlet means in the accessory housing for passing fluid from the accessory housing into a patient's body; and filter means mounted in the accessory housing for filtering fluid passing from the accessory fluid inlet to the accessory fluid outlet.

Claim 10

The device of claim 6 further comprising an inlet port in the accessory housing for receiving fluid from outside the patient's body.

Claim 11

The device of claim 7 wherein the inlet port includes a septum for receiving a hypodermic needle.

Claim 12

An implantable fluid dispensing device comprising: a sealed case having a fluid storage reservoir; fluid outlet means on the case for passing fluid from the reservoir to the exterior of the case; the case being shaped with a biocompatible curved perimeter and having a shelf stepped in from the curved perimeter; an accessory housing mounted on the shelf and shaped to conform to the curved perimeter; an inlet port mounted on the accessory housing for injecting fluid into the housing; and valve means for preventing fluid from the housing from passing into the sealed case.

Claim 13

An implantable fluid dispensing device comprising: a sealed case having a fluid storage reservoir; fluid outlet means on the case for passing fluid from the reservoir to the exterior of the case; the case being shaped with a biocompatible curved perimeter and having a shelf stepped in from the curved perimeter; an accessory housing mounted on the shelf and shaped to conform to the curved perimeter; an inlet port mounted on the accessory housing for injecting fluid into the housing; and valve means for preventing fluid from the housing from passing into the sealed case.

Claim 14

The device of claim 9 further comprising filter means mounted in the accessory housing for filtering fluid as it passes through the accessory housing.

Claim 15

An accessory module for mounting on an implantable fluid dispensing device comprising: an accessory housing formed of inert biocompatible plastic having one curved side shaped to contact the interior of the body in a non-irritating manner and a second side shaped to be inset in its fluid dispensing case; accessory fluid inlet means mounted on the accessory housing for receiving fluid; accessory outlet means mounted on the housing for dispensing fluid; and an accessory mounted within the housing for processing fluid.

Claim 16

An accessory module for mounting on an implantable fluid dispensing device comprising: an accessory housing formed of inert biocompatible plastic having one curved side shaped to contact the interior of the body in a non-irritating manner and a second side shaped to be inset in its fluid dispensing case; accessory fluid inlet means mounted on the accessory housing for receiving fluid; accessory outlet means mounted on the housing for dispensing fluid; and an accessory mounted within the housing for processing fluid.

Claim 17

The device of claim 11 wherein the accessory is a filter for filtering fluid as it passes through the housing.

Claim 18

The device of claim 11 wherein the accessory is a port for receiving fluid from a source external to a patient's body and a valve for preventing flow of fluid out of the accessory inlet port.