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Automatic injection device

  • US 6,917,828 B2
  • Filed: 09/27/2001
  • Issued: 07/12/2005
  • Est. Priority Date: 10/03/2000
  • Status: Active Grant
First Claim
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1. An automatic injection device comprising piston holders holding cylinder pistons and plural systems of heads having a drive mechanism for moving the piston holders forward and backward, whereby the device can hold a plurality of syringes and operates injection or suction in each syringe independently,said device comprising a ratchet and a ratchet pole, wherein when the piston holder of a first head is in a forward-moving state then said ratchet pole is engaged with said ratchet whereby the piston holder of a second head is in a stopped state and backward-moving of the second head is prohibited, and wherein the engagement is releasable in order to allow the second head to move in a backward-moving state.

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