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Device for metered administration of an injectable product

  • US 6,290,679 B1
  • Filed: 05/14/1999
  • Issued: 09/18/2001
  • Est. Priority Date: 05/14/1999
  • Status: Expired due to Fees
First Claim
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1. A device for metered administration of an injectable product, comprising:

  • (a) a base section, (b) a container arranged in said base section, from which container a dose of the injectable product is dispensed through a needle by advancing in a forward direction at least one piston arranged in said container, (c) a drive unit comprising a driven member projecting into the container, said driven member advancing the piston in said forward direction upon actuation of the drive unit, and (d) a metering device for choosing a length over which the driven member is displaced in relation to the base section, said metering device comprising a first metering mechanism and a second metering mechanism, the second metering mechanism being adjustable in relation to the first metering mechanism, wherein the first and second metering mechanisms are arranged in said container and metering is effected by interaction of the first and the second metering mechanisms within said container, and wherein said first metering mechanism is formed by a recess in a cylindrical jacket surface, wherein said recess comprises two side walls extending in said forward direction, and a connection of these side walls comprising a wall section extending in circumferential direction and against said forward direction, said wall section serving as stop for said second metering mechanism.

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