Sterile Syringe Comprising a Non-Sliding Seal
AssigneeBiosafe S.A.
InventorPau Mato Sabat
Life of this patent
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Abstract
The invention discloses a sterile syringe (100) comprising a barrel (1) having internal surfaces (2), a plunger (3) movable within the barrel, a non-sliding seal (7) between the barrel and the plunger defining a sealed volume (8) and at least one filter (9) allowing only filtered gases to enter the sealed volume such that the syringe maintains its sterility even after several uses. The filters could be positioned on different locations on the syringe like on the non-sliding seal, the barrel, the barrel flange or the plunger handle.
Claims12
A syringe comprising
- a barrel having internal surfaces;
- a plunger movable within the barrel;
- a non-sliding seal between the barrel and the plunger defining a sealed volume;
- and
- at least one filter allowing only filtered gases to enter the sealed volume.
A method of sterilizing a syringe, the syringe comprising
- a barrel having internal surfaces;
- a plunger movable within the barrel;
- a non-sliding seal defining a sealed volume between the barrel and the plunger;
- and
- a filter allowing only filtered gases to enter the sealed volume;
- wherein the method comprises exposing the internal surfaces to ethylene oxide gas wherein the said gas entering the sealed volume via the filter.
A method of maintaining sterility in a syringe wherein the syringe comprises
- a barrel having internal surfaces;
- a plunger movable within the barrel;
- a non-sliding seal defining a sealed volume between the barrel and the plunger;
- and
- a filter allowing only filtered gases to enter the sealed volume;
- wherein the method comprises operating the syringe multiple times and maintaining sterility by avoiding the exposure of the internal surfaces other than to syringed liquids and the said filtered gases.
Dependencies are inferred from the claim text.