Steerable extendable guidewire with adjustable tip
First Claim
Patent Images
1. A steerable guidewire comprising:
- an elongate solid walled tubular shaft having a proximal end and a distal end;
an elongate flexible distal segment connected to and extending distally from the shaft, the distal segment being flexible;
a pull wire extending through the tubular shaft and into the flexible distal segment, the distal end of the pull wire being connected to the distal portion of the flexible segment in a manner such that when tension is applied to the pull wire, the distal end of the flexible distal segment will assume a curved configuration;
the shaft including a flexible stretchable tubular segment at a proximal portion distally of the proximal end of the shaft;
the pull wire extending through the flexible stretchable tubular segment and being attached to the shaft proximally of the flexible segment.
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Abstract
A small diameter steerable guidewire for cardiovascular catheterization procedures is provided with a means by which the curvature at the distal tip of the guidewire can be adjustable by control applied at the proximal end of the guidewire whereby the curve at the distal end of the guidewire can be adjusted without requiring removal of the guidewire from the patient. The proximal end of the guidewire is configured so that it can be attached to a guidewire extension so as to facilitate catheter exchanges.
323 Citations
19 Claims
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1. A steerable guidewire comprising:
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an elongate solid walled tubular shaft having a proximal end and a distal end; an elongate flexible distal segment connected to and extending distally from the shaft, the distal segment being flexible; a pull wire extending through the tubular shaft and into the flexible distal segment, the distal end of the pull wire being connected to the distal portion of the flexible segment in a manner such that when tension is applied to the pull wire, the distal end of the flexible distal segment will assume a curved configuration; the shaft including a flexible stretchable tubular segment at a proximal portion distally of the proximal end of the shaft; the pull wire extending through the flexible stretchable tubular segment and being attached to the shaft proximally of the flexible segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A steerable guidewire comprising:
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an elongate solid walled tubular shaft having a proximal end and a distal end; an elongate flexible distal segment connected to and extending distally from the shaft, the distal segment being flexible; a pull wire extending through the tubular shaft and into the flexible distal segment, the distal end of the pull wire being connected to the distal portion of the flexible segment in a manner such that when tension is applied to the pull wire, the distal end of the flexible distal segment will assume a curved configuration; the shaft including a flexible stretchable tubular segment at a proximal portion distally of the proximal end of the shaft, the flexible stretchable tubular segment having a proximal end and a distal end; the pull wire extending through the flexible stretchable tubular segment and being anchored with respect to the proximal end of the flexible stretchable tubular segment. - View Dependent Claims (19)
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Specification