Single-use syringe
OwnerThomas Hatchinventor
Life of this patent
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Abstract
Disclosed is a single-use syringe comprising a needle housing, a bore-containing fluid-delivery needle and a volume-containing element. The needle housing has a top surface to which the volume-containing element is attached, a needle attachment side to which the bore-containing needle is attached, and a fluid delivery channel in communication between the top surface and the needle attachment side. The volume-containing element is fluid-tight but for communication with the fluid-delivery and a filling port. Embodiments are disclosed which include vapor-permeable portions which facilitate lyophilization of materials in situ.
Claims4
A web comprising a linked plurality of individually rehydratable lyophilized material, the web being produced by a process comprising:
- a) providing a heat-sealable tube having a first end and a second end, a continuous portion of the heat-sealable tube extending from the first end to the second end being a vapor-permeable portion;
- b) filling the tube with a fluid containing a material to be lyophilized;
- c) introducing fluid tight seals in spaced-apart relations to form a plurality of individual chambers;
- d) lyophilizing the material in the fluid of step b);
- and
- e) sealing the vapor-permeable portion with a vapor impermeable material under anhydrous conditions.
A method for producing individually packaged, sub-gram to gram quantities of a lyophilized material, the method comprising,
- a) providing a heat-sealable tube having a first end and a second end, a continuous portion of the heat-sealable tube extending from the first end to the second end being a vapor-permeable portion;
- b) filling the tube with a fluid containing a material to be lyophilized;
- c) introducing fluid tight seals in spaced-apart relations to form a web comprising a plurality of individual chambers;
- d) lyophilizing the material in the fluid of step b);
- and
- e) sealing the vapor-permeable portion with a vapor impermeable material under anhydrous conditions.
Dependencies are inferred from the claim text.