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Drug delivery cartridge with protective cover

  • US 4,850,978 A
  • Filed: 10/29/1987
  • Issued: 07/25/1989
  • Est. Priority Date: 10/29/1987
  • Status: Expired due to Term
First Claim
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1. A cartridge for introducing a beneficial agent into a fluid conduit for delivery of the beneficial agent, said cartridge comprising;

  • (a) a rigid hollow tube;

    (b) a chamber having a beneficial agent therein, said chamber being mounted adjacent a first end of said hollow tube and being slidably mounted at least partially within said hollow tube from a first position to a second position, such that in said first position said chamber extends a greater distance from said hollow tube than in said second position;

    (c) at least one cannula mounted within said hollow tube, extending at least in a direction opposite said chamber; and

    (d) a protective cover selectively movable between a chamber protective position wherein said cover is securely but releasably mounted to said tube adjacent said first end thereof to cover said chamber and prevent movement of said chamber from said first position to said second position, and a cannula protective position wherein said protective cover is securely mounted about the other end of said hollow tube, covering said cannula.

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