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Cartridge apparatus for injecting fluids into bone

  • US 8,480,632 B2
  • Filed: 03/05/2010
  • Issued: 07/09/2013
  • Est. Priority Date: 05/31/2002
  • Status: Active Grant
First Claim
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1. A cartridge assembly for delivering a quantity of medication to bone marrow of a bone comprising:

  • a fluid reservoir having a first end and a second end;

    a hollow, bone penetrating needle engaged with the first end of the fluid reservoir;

    a plunger assembly including a piston and a plunger shaft attached to the piston;

    the piston slidably disposed in the fluid reservoir;

    a portion of the plunger shaft extending from the second end of the fluid reservoir;

    a drive connector attached to the second end of the fluid reservoir opposite from the bone penetrating needle; and

    the drive connector operable to rotate the cartridge assembly in response to rotation of the drive connector by an associated drive housing;

    where the cartridge assembly is configured to be removably coupled to a driver such that if the needle is disposed in a bone of a patient;

    (i) the cartridge assembly can be removed from the driver, and (ii) the needle can be disengaged from the reservoir.

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