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SHORT THROW CENTERED HANDLE FOR STENT DELIVERY SYSTEM

  • US 20120221093A1
  • Filed: 02/21/2012
  • Published: 08/30/2012
  • Est. Priority Date: 02/28/2011
  • Status: Abandoned Application
First Claim
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1. A stent delivery system comprising:

  • an elongate outer tubular shaft including a proximal portion, a distal portion, and a stent attachment portion on the distal portion of the outer shaft, said stent attachment portion configured for attachment to a proximal stent end;

    an elongate inner shaft extending longitudinally, coaxially, slidably through the outer elongate tubular shaft including a proximal portion, a distal portion, and a stent receiving portion on the distal portion of the shaft, said stent receiving portion configured for attachment to a distal stent end;

    a fixed handle that is fixedly attached to a housing, which housing is configured to house a stent-deployment mechanism; and

    a stent deployment mechanism disposed in the housing, the mechanism comprising;

    a movable handle configured to be longitudinally slidable relative to the housing;

    a first rack member attached to a proximal portion of the inner shaft and comprising a first cog-engaging surface;

    a second rack member attached to the movable handle, attached to a proximal portion of the outer shaft, and comprising a second cog-engaging surface; and

    a cog rotatably attached to the housing in a manner configured to provide mechanical communication between the first and second cog-engaging surfaces of the first and second rack members;

    wherein the inner shaft and the outer shaft are configured to cooperatively apply opposing longitudinal tensile forces to at least a portion of a stent in the constrained configuration with the proximal and distal constraining members each in a first position corresponding to a first relative position of the movable handle, first rack member, and second rack member.

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