Implantable infusion pump
First Claim
1. An implantable infusion pump for the dosed administration of medications into the human body, comprising:
- a pumping chamber, which is formed by a lower chamber part; and
an upper chamber part connected thereto, whereina) the pumping chamber is divided by a gas impermeable flexible divider into two subchambers;
b) the first subchamber is delimited by the upper chamber part and the flexible partition and is designed as a reservoir for medicinal solutions, the upper part of the chamber has a refill opening which is sealed by at least one pierceable septum, and the reservoir for medicinal solutions is connected to an outlet catheter via an outlet opening, andc) the second subchamber is delimited by the lower chamber part and the flexible partition and is designed as a pressure chamber to accommodate a propellant, wherein the gas impermeable flexible divider is a convex metal foil following the contour of the inner form of the upper part of the chamber and is covered with a first polymer film on the side facing the medicinal solution.
6 Assignments
0 Petitions
Accused Products
Abstract
The invention refers to an implantable infusion pump for the dosed administration of medication into the human body comprising a pump chamber which is formed by a lower chamber part and an upper chamber part connected thereto, whereby the pumping chamber is divided into two subchambers by a gas impermeable flexible partition and provided as a reservoir for medicinal solutions, the upper chamber part has a refilling opening which is sealed by at least a pierceable septum and the reservoir for medicinal solutions is connected to an outlet catheter via an outlet opening and possibly an outlet reduction arrangement, and the second subchamber is delimited by the lower chamber part and the flexible partition to serve as a pressure chamber to accommodate a propellant, whereby the gas impermeable partition is a convex metal foil following the contour of the inner form of the upper part of the chamber. This metal foil may be covered on one or both sides with a polymer support film.
106 Citations
16 Claims
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1. An implantable infusion pump for the dosed administration of medications into the human body, comprising:
a pumping chamber, which is formed by a lower chamber part; and
an upper chamber part connected thereto, whereina) the pumping chamber is divided by a gas impermeable flexible divider into two subchambers; b) the first subchamber is delimited by the upper chamber part and the flexible partition and is designed as a reservoir for medicinal solutions, the upper part of the chamber has a refill opening which is sealed by at least one pierceable septum, and the reservoir for medicinal solutions is connected to an outlet catheter via an outlet opening, and c) the second subchamber is delimited by the lower chamber part and the flexible partition and is designed as a pressure chamber to accommodate a propellant, wherein the gas impermeable flexible divider is a convex metal foil following the contour of the inner form of the upper part of the chamber and is covered with a first polymer film on the side facing the medicinal solution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An implantable infusion pump for the dosed administration of medications into the human body, comprising:
a pump chamber, which is formed by a lower chamber part; and
an upper chamber part connected thereto, whereina) the pumping chamber is divided by a gas impermeable flexible divider into two subchambers, b) the first subchamber is delimited by the upper chamber part and the flexible partition and is designed as a reservoir for medicinal solutions, the upper part of the chamber has a refill opening which is sealed by at least one pierceable septum, and the reservoir for medicinal solutions is connected to an outlet catheter via an outlet opening, and c) the second subchamber is delimited by the lower chamber part and the flexible partition and is designed as a pressure chamber to accommodate a propellant, wherein the gas impermeable flexible divider is a convex metal foil following the contour of the inner form of the upper part of the chamber and is covered with a first polymer film on the side facing the medicinal solution and a second polymer film on the side facing the propellant. - View Dependent Claims (15, 16)
Specification