Stent delivery system with coaxial catheter handle
First Claim
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1. A stent delivery system comprising:
- a stent delivery catheter assembly having a delivery catheter, a handle housing coaxially positioned on a proximal end of said delivery catheter, a balloon portion on a distal end of said delivery catheter, a stent mounted on said balloon portion, and a sheath overlying said delivery catheter and adapted for relative axial movement with respect to said delivery catheter; and
a plunger assembly enclosed by said handle housing, said plunger assembly connected to said sheath, whereby movement of said plunger assembly proximally provides relative motion between said sheath and said delivery catheter, to retract said sheath proximally from overlying said stent on said balloon portion.
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Abstract
A stent delivery catheter handle for providing relative motion between the outer sheath of a stent delivery catheter and an underlying catheter, via a thumbswitch, to enable the outer sheath to withdraw from over the underlying catheter and expose a vascular prosthesis. The handle allows the annulus between the outer sheath and the underlying catheter to be filled with a purging fluid, to prevent blood from a patient'"'"'s vascular system from entering the annulus and coagulating. A flush port forms a dynamic seal in the catheter handle.
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Citations
19 Claims
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1. A stent delivery system comprising:
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a stent delivery catheter assembly having a delivery catheter, a handle housing coaxially positioned on a proximal end of said delivery catheter, a balloon portion on a distal end of said delivery catheter, a stent mounted on said balloon portion, and a sheath overlying said delivery catheter and adapted for relative axial movement with respect to said delivery catheter; and a plunger assembly enclosed by said handle housing, said plunger assembly connected to said sheath, whereby movement of said plunger assembly proximally provides relative motion between said sheath and said delivery catheter, to retract said sheath proximally from overlying said stent on said balloon portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A stent delivery system comprising:
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a stent delivery catheter assembly having a handle housing coaxially positioned on a proximal end of a delivery catheter, said delivery catheter having a balloon portion on a distal end, a stent mounted on said balloon portion, and a sheath overlying said delivery catheter and adapted for relative axial movement with respect to said delivery catheter; and a thumbswitch operably connected to said sheath and slidably retained in said handle housing, whereby retracting said thumbswitch proximally retracts said sheath proximally relative to said delivery catheter. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification