Injection Arrangement for a Flowable Drug
First Claim
1. Injection arrangement comprising a replaceable container cartridge for a flowable drug, the container cartridge comprising a deformable bag arranged inside and sealed against a rigid outer casing, the deformable bag being arranged for holding the flowable drug and in fluid communication with an outlet, the rigid outer casing fillable by a displacement fluid for displacing the deformable bag the injection arrangement further comprising a reservoir holding the displacement fluid and a pump for pumping the displacement fluid from the reservoir into the rigid outer casing and/or from the rigid outer casing into the reservoir via a fluid channel, wherein the displacement fluid is a liquid.
1 Assignment
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Accused Products
Abstract
The invention refers to an injection arrangement (1) comprising a replaceable container cartridge (2) for a flowable drug (5), the container cartridge (2) comprising a deformable bag (4) arranged inside and sealed against a rigid outer casing (3), the deformable bag (4) being arranged for holding the flowable drug (5) and in fluid communication with an outlet (6), the rigid outer casing (3) fillable by a displacement fluid (7) for displacing the deformable bag (4), the injection arrangement (1) further comprising a reservoir (8) for the displacement fluid (7) and a pump (9) for pumping the displacement fluid (7) from the reservoir (8) into the rigid outer casing (3) and/or from the rigid outer casing (3) into the reservoir (8) via a fluid channel (10).
7 Citations
16 Claims
- 1. Injection arrangement comprising a replaceable container cartridge for a flowable drug, the container cartridge comprising a deformable bag arranged inside and sealed against a rigid outer casing, the deformable bag being arranged for holding the flowable drug and in fluid communication with an outlet, the rigid outer casing fillable by a displacement fluid for displacing the deformable bag the injection arrangement further comprising a reservoir holding the displacement fluid and a pump for pumping the displacement fluid from the reservoir into the rigid outer casing and/or from the rigid outer casing into the reservoir via a fluid channel, wherein the displacement fluid is a liquid.
- 14. Method for operating an injection arrangement, the injection arrangement comprising a replaceable container cartridge for a flowable drug, the container cartridge comprising a deformable bag arranged inside and sealed against a rigid outer casing, the deformable bag being arranged for holding the flowable drug and in fluid communication with an outlet, the rigid outer casing fillable by a displacement fluid for displacing the deformable bag, the injection arrangement further comprising a reservoir for the displacement fluid and a pump, the method comprising the step of pumping the displacement fluid from the reservoir into the rigid outer casing and/or from the rigid outer casing into the reservoir via a fluid channel, characterized in that the displacement fluid used is a liquid.
Specification