Patents Assigned to DRS Infusion Systems, Inc.
  • Patent number: 4702735
    Abstract: An assembly of a breakaway needle and catheter is provided for injection by the user, using only one hand. The needle and catheter are inserted by the user, and the needle is then retracted from the puncture site leaving the catheter in place. As the needle is retracted, it breaks apart and separates from the catheter.The assembly includes adhesive coated taping wings to which the catheter is attached. Hence, when the taping wings are attached to the user's body following splitting of the needle, the catheter will be secured in place for long term use.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: October 27, 1987
    Assignee: DRS Infusion Systems, Inc.
    Inventors: Ronald B. Luther, Daniel R. Snyder, Craig M. Whitehouse
  • Patent number: 4559043
    Abstract: An assembly for connecting needles and catheters in I.V. applications, chemical analysis, etc., includes a leak proof, sterile, self-sealing septum from which the needle is inserted. When the needle is retracted from the septum, the septum will reseal and thus maintain a leak-proof, sterile seal. The assembly is therefore reuseable, and this represents a considerable cost saving for patients who require continuous therapy such as with diabetics, cancer patients, and the like.The assembly includes a distal end having an outlet bore through which a catheter is inserted. The proximal end of the assembly is connected to an external adaptor to which is attached a needle. The septum is positioned between the distal end and the proximal end to provide a self-sealing seal between the needle and the catheter. This external adaptor with needle may be part of a syringe or shaped to accommodate any standard connector such as a luer lock.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: December 17, 1985
    Assignees: DRS Infusion Systems, Inc., Luther Medical Products, Inc.
    Inventors: Craig M. Whitehouse, Daniel R. Snyder, Ronald B. Luther
  • Patent number: 4437859
    Abstract: A syringe driving unit comprising free pistons in interconnected cylindrical chambers, one of the pistons carrying a syringe plunger driver and being biased, directly or indirectly, in the driving direction, and one piston being movable to force both pistons into primed or loaded position, the connections between the chambers including a pressure regulator, flow regulator and a needle valve to regulate adjustably the return flow or hydraulic fluid corresponding to the movement of the driving piston. The priming piston may be moved mechanically or pneumatically, and fail-safe mechanism may be provided, if needed, to become effective in case of leakage. Bolus delivery, to augment optionally the adjusted flow, is also provided for.
    Type: Grant
    Filed: August 3, 1981
    Date of Patent: March 20, 1984
    Assignee: DRS Infusion Systems, Inc.
    Inventors: Craig M. Whitehouse, Nigel Cox, Allan G. Burt, Daniel R. Snyder