Implantable device for injecting medical substances
First Claim
1. An injection device for injecting medical substances and designed to be implanted in a subcutaneous zone of the body of a patient in order to inject said substances into the body, the device (1) comprising:
- a hollow rigid housing (2) comprising a distal wall (6) from which there extend side walls (7) whose free ends (8) define a proximal opening (9);
a membrane (3) which is situated on the free ends (8) of the side walls (7) to close the proximal opening (9) in substantially hermetic manner, thereby defining a chamber (12);
a duct (4) connected to the rigid body (2) and connecting the chamber (12) to the outside of the injection device (1);
the membrane (3) being designed during injection to be pierced by a needle for delivering a dose of said substance into the body of the patient via the chamber (12) and the duct (4);
the side walls (7) and the distal wall (6) of the rigid body (2) being non-pierceable by the needle so as to prevent the needle penetrating into the body of the patient while it is being inserted into the chamber (12); and
a casing (15) of elastomer material covering the housing (2), the membrane (3) forming an integral portion of the casing (15), and the grade of elastomer used for the membrane (3) is being different from that used for the casing (15).
1 Assignment
0 Petitions
Accused Products
Abstract
An injection device (1) for injecting medical substances and designed to be implanted in a subcutaneous zone of the body of a patient. The device includes a hollow rigid housing (2) having an opening which is closed hermetically by a membrane (3) so as to define a chamber (12). A duct (4) is connected to the housing to connect the chamber to the outside of the device. The device also has a casing (15) of elastomer material which covers the housing, and the membrane forms an integral portion of the casing. The implantable device is suitable for performing chemotherapy treatment.
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Citations
10 Claims
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1. An injection device for injecting medical substances and designed to be implanted in a subcutaneous zone of the body of a patient in order to inject said substances into the body, the device (1) comprising:
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a hollow rigid housing (2) comprising a distal wall (6) from which there extend side walls (7) whose free ends (8) define a proximal opening (9);
a membrane (3) which is situated on the free ends (8) of the side walls (7) to close the proximal opening (9) in substantially hermetic manner, thereby defining a chamber (12);
a duct (4) connected to the rigid body (2) and connecting the chamber (12) to the outside of the injection device (1);
the membrane (3) being designed during injection to be pierced by a needle for delivering a dose of said substance into the body of the patient via the chamber (12) and the duct (4);
the side walls (7) and the distal wall (6) of the rigid body (2) being non-pierceable by the needle so as to prevent the needle penetrating into the body of the patient while it is being inserted into the chamber (12); and
a casing (15) of elastomer material covering the housing (2), the membrane (3) forming an integral portion of the casing (15), and the grade of elastomer used for the membrane (3) is being different from that used for the casing (15). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification