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Retractable dental syringe

  • US 6,221,055 B1
  • Filed: 10/01/1999
  • Issued: 04/24/2001
  • Est. Priority Date: 03/04/1998
  • Status: Expired due to Term
First Claim
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1. A retractable dental syringe, comprising:

  • a carpule having a fluid chamber and a front seal and a rear seal for holding fluid in the chamber;

    a tubular housing which accepts the carpule, the tubular housing having a front end portion holding a retractably mounted needle in fluid communication with the fluid chamber for dispensing fluid contents of the carpule;

    a depressible plunger which presses against the rear seal to dispense fluid from the carpule; and

    the carpule being adapted to release and receive the retractably mounted needle once the fluid id dispensed as the plunger and the carpule are moving forward in response to depression of the plunger.

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