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    Syringe pump system
    9.
    发明专利
    Syringe pump system 未知

    公开(公告)号：NZ709295A

    公开(公告)日：2017-12-22

    申请号：NZ70929513

    申请日：2013-12-20

    Applicant: DEKA PRODUCTS LP

    Inventor： BAIER MICHAEL J ,  VAN DER MERWE DIRK A ,  PAWLOWSKI DANIEL F ,  NORRIS MICHAEL G ,  THERRIEN ALEXANDER R ,  KAMEN DEAN ,  KERWIN JOHN M ,  GRAY LARRY B ,  BODWELL JESSE T ,  FICHERA STEPHAN L ,  THURBER JONATHAN R ,  DESCH MARTIN D ,  SABIN ERIK N ,  COLLINS DAVID E ,  FARLOW JARED N ,  ZOBRO JONATHAN ,  FRIEDRICH THOMAS A ,  HEINZMANN RICHARD KURT ,  BLUMBERG JR DAVID ,  SLOSS JAMES L ,  LIM SIMON W ,  JANWAY JEFFREY M

    IPC: A61M1/10 ,  A61J7/00 ,  A61M5/145

    Abstract: A method for discharging fluid from a syringe and for mitigating occlusion conditions includes actuating the plunger of a syringe into a barrel. The method monitors fluid pressure within the barrel of the syringe and determines that an occlusion exists when the fluid pressure exceeds a predetermined threshold. The method actuates the plunger out of the barrel by a predetermined amount in response to the detected occlusion and actuates the plunger of the syringe into the barrel until a measured fluid pressure within the barrel of the syringe exceeds another predetermined threshold. A syringe pump for administering an agent to a patient comprises a housing; a lead screw; a linear cam; a half-nut assembly having first and second half-nut arms each having a first end and a second end, wherein the second ends of the first and second half-nut arms are configured to engage with the lead screw, the first and second half-nut arms are pivotally coupled together, the first ends of the first and second half-nut arms are configured to engage with the linear cam such that actuation of the linear cam toward the half-nut assembly causes the first ends of the first and second half-nut arms to pivotally approach each other, and the second ends of the first and second half-nut arms each includes threads configured to engage the lead screw when the first ends of the first and second half-nut arms approach each other caused by actuation of the linear cam; and a plunger head assembly coupled to said half-nut assembly and operative to drive a plunger of a syringe into a barrel of said syringe.

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