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Elastomeric syringe actuation device

  • US 5,643,213 A
  • Filed: 02/14/1995
  • Issued: 07/01/1997
  • Est. Priority Date: 03/09/1994
  • Status: Expired due to Fees
First Claim
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1. A method for actuating a syringe having a barrel with a proximal end for containing a supply of fluid, an outlet tip at the proximal end of the barrel, and a plunger slidably disposed within the barrel for movement between a withdrawn position and an inserted position, the plunger having an actuation portion extending distally from the barrel to a distal end, the method comprising the steps of:

  • (a) providing a grommet assembly attached to first and second elastic straps, the first strap being attached to a first end cap and the second strap being attached to a second end cap, the first end cap having a distal end;

    (b) seating the grommet assembly around the outlet tip;

    (c) with the actuation portion in the withdrawn position, and with the flow of fluid from the outlet tip obstructed, stretching the first strap distally along the length of the barrel and the actuation portion, and engaging the first end cap against the distal end of the actuation portion;

    (d) stretching the second strap distally along the length of the barrel and the actuation portion, and engaging the second end cap against the distal end of the first end cap; and

    (e) removing the obstruction to fluid flow.

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