Rechargeable implantable device for dosed and repeated self-injection of medicament
First Claim
1. Device for repeated injection of medicament (20) in unitary doses and at a frequency which is a function of therapeutic treatment needs, said device being implantable in a body of a patient and comprising:
- a site (5) for injection of the medicament (20) implantable below the skin (1) of the patient;
an external supplying means for supplying said site (5);
a catheter (13), implantable in a therapeutic action zone of the patient, for injecting each unitary dose of medicament;
a reservoir (6), made from a flexible plastic material, for storing the medicament, between two restocking operations, by means of said external supplying means and through said site (5);
a first connection tube (7), made from a flexible plastic material, for connecting said reservoir (6) to said site (5);
a pre-dosed balloon (10) made from a flexible plastic material;
a second tube (9) for connecting between said balloon (10) and said reservoir (6), said second tube (9) also being made from a flexible plastic material;
a capillary, for controlling the flowrate of a medicament disposed upstream of said balloon (10), positioned between said balloon (10) and said reservoir (6), so as to control the filling time of said balloon (10);
valve means (16), disposed between said balloon (10) and said catheter (13), responsive only to pressure exerted on said balloon (10), said balloon (10) having a volume which is a function of the unitary dose of medicament to be injected through said catheter (13) by pressure exerted upon said balloon (10) by cutaneous digital deformation and forming means for controlling the injection of medicament in cooperation with said valve means (16);
said valve means (16) comprising a valve rod, a clamping means for holding said valve rod and means for initiating slackening of said clamping means of said valve rod as a result of fluid pressure of medicament exerted by a cutaneous digital control of said balloon (10).
1 Assignment
0 Petitions
Accused Products
Abstract
The implantable device for the repeated injection of medicament (20) in unitary does in at a frequency which is a function of the therapeutical treatment needs comprises essentially: a flexible reservoir (6) for the storage of the medicament. A first flexible connection tube (7) connecting the reservoir to an injection site (5) a small flexible balloon for the predosing and controlling of the injection of the medicament, a second flexible connection tube (9) connecting the small balloon (10) and the reservoir (6), a valve fitted with valve means (16) of the type responsive only to the pressure exerted to small balloon means (11) for controlling the flow rate for filling the small balloon (10), and provided on said second connection tube (9), a non-return valve (21) provided immediately upstream of the control balloon (10). Application to therapeutic treatments.
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Citations
14 Claims
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1. Device for repeated injection of medicament (20) in unitary doses and at a frequency which is a function of therapeutic treatment needs, said device being implantable in a body of a patient and comprising:
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a site (5) for injection of the medicament (20) implantable below the skin (1) of the patient; an external supplying means for supplying said site (5); a catheter (13), implantable in a therapeutic action zone of the patient, for injecting each unitary dose of medicament; a reservoir (6), made from a flexible plastic material, for storing the medicament, between two restocking operations, by means of said external supplying means and through said site (5); a first connection tube (7), made from a flexible plastic material, for connecting said reservoir (6) to said site (5); a pre-dosed balloon (10) made from a flexible plastic material; a second tube (9) for connecting between said balloon (10) and said reservoir (6), said second tube (9) also being made from a flexible plastic material; a capillary, for controlling the flowrate of a medicament disposed upstream of said balloon (10), positioned between said balloon (10) and said reservoir (6), so as to control the filling time of said balloon (10); valve means (16), disposed between said balloon (10) and said catheter (13), responsive only to pressure exerted on said balloon (10), said balloon (10) having a volume which is a function of the unitary dose of medicament to be injected through said catheter (13) by pressure exerted upon said balloon (10) by cutaneous digital deformation and forming means for controlling the injection of medicament in cooperation with said valve means (16); said valve means (16) comprising a valve rod, a clamping means for holding said valve rod and means for initiating slackening of said clamping means of said valve rod as a result of fluid pressure of medicament exerted by a cutaneous digital control of said balloon (10). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification