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US 2025/0144299 A1Published application
Method and apparatus to reduce the deadspace in syringes and small-bore devices
OwnerThomas C. KURACINAinventor
Life of this patent
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Abstract
Methods and apparatus to reduce deadspace in syringes and other devices with the use of volume displacing members that occupy space within one or more interior spaces of such devices. The volume displacing members are also equipped with one or more internal flow passages that facilitate a flow of a fluid through it. The volume displacing members are also adapted to cooperate with features of the devices that house them to form air-tight and liquid-tight seals that at least partially determine a fluid pathway through the devices.
Claims5
A syringe comprising:
- a hollow barrel configured to store a liquid or gas in an interior cavity therein;
- a male nozzle extending distally from the hollow barrel and having an interior cavity with an inside diameter defined by an interior wall of the male nozzle;
- and
- a volume displacing member disposed inside at least a portion of the interior cavity of the male nozzle and configured to reduce the cubic volumetric capacity inside the interior cavity of the male nozzle available for accommodating the liquid or gas, the volume displacing member including a body with an exterior wall having an outside diameter sized to form a liquid-tight and air-tight seal with the interior wall of the male nozzle, having a through passage that includes a first opening and a second opening distal to the first opening, the first opening being in fluid communication through the flow path with the interior cavity of the hollow barrel, the first opening being located off-center in a proximal end of the volume displacing member.
1 more element
Dependencies are inferred from the claim text.