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Systems and methods for injecting flowable materials into bones

  • US 6,645,213 B2
  • Filed: 06/27/2001
  • Issued: 11/11/2003
  • Est. Priority Date: 08/13/1997
  • Status: Expired due to Fees
First Claim
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1. An assembly for injecting flowable material into bone comprisinga tubular body including an interior bore to carry a material flow, the tubular body having a longitudinal axis and including a dispensing end, an opening in the dispensing end communicating with the bore to dispense the material flow, a plunger located at least partially within the tubular body, the plunger adapted to be displaced along the longitudinal axis of the tubular body, an advancement mechanism attached to the plunger, a first advancement screw adapted to actuate the advancement mechanism to displace the plunger a first longitudinal displacement in a first direction in response to rotation of the first advancement screw in a first direction and to displace the plunger a first longitudinal displacement in a second direction in response to rotation of the first advancement screw in a second direction, and a second advancement screw adapted to actuate the advancement mechanism to displace the plunger a second longitudinal displacement in a first direction in response to rotation of the second advancement screw in a first direction and to displace the plunger a second longitudinal displacement in a second direction in response to rotation of the second advancement screw in a second direction.

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