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System for locking a dosing button in a device for the adminstration of a product to be injected

  • US 6,193,698 B1
  • Filed: 03/31/2000
  • Issued: 02/27/2001
  • Est. Priority Date: 07/18/1997
  • Status: Expired due to Fees
First Claim
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1. A system for locking a dosing button in a device for metered administration of an injectable product, the apparatus comprisinga) a housing, including an accommodation for said product, of which a selected dose for an injection is delivered from a container by means of a pumping member, b) a drive member for said pumping member, c) a dosing button coupled to said drive member, shiftably mounted in said housing, said dosing button, when shifted from a first position into a second position by actuation of said drive member, resulting in said selected dose being delivered, this dose being selected in said first position by rotation of said dosing button from a first rotation position for zero delivery into a second rotation position, d) a first indicator sleeve, affixed to said housing, and a second indicator sleeve, rotatable with said dosing button, said indicator sleeves comprising indicator members, permitting reading off said selected dose due to the rotation position of said indicator sleeves relative to each other, and e) an anti-shifting member, permitting shifting of said dosing button from said second position back into said first position only when said indicator sleeves are located in a zero position relative to each other indicating a “

  • zero”

    dose, characterized in that f) said anti-shifting member is released by pressing a trigger button, and g) said second indicator sleeve releases said trigger button for external access only in said zero position of said indicator sleeves.

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