Thrombus removal device
First Claim
Patent Images
1. A thrombi removal device comprising:
- a shaft including a distal end and a proximal end; and
a helical coil including a proximal end attached to the distal end of the shaft, a plurality of spaced apart body portions each having bends forming a helix, and a distal tip shaped as a loop, wherein first and second bends formed adjacent the loop orient the loop at an angle relative to a longitudinal axis extending through the helical coil, at least one body portion having an angle relative to the longitudinal axis that is substantially the same as the angle at which the loop is oriented, wherein the loop is oriented at an angle relative to the longitudinal axis such that the distal tip is spaced a distance from the longitudinal axis, the body portions having a substantially same diameter along an entire length of the helical coil.
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Abstract
A thrombi removal device includes a shaft with a distal end and a proximal end and a helical coil attached at one end to the distal end of the shaft and extending in the distal direction from the shaft. The coil has a plurality of body portions with turns or winding spaced apart longitudinally and laterally to facilitate screwing the coil into the thrombus and to provide a sufficient open area into which the thrombus can be captured. The distal end of the coil is provided with a loop. The angle of the loop relative to a longitudinal axis extending through the helical coil is about the same as the angle of at least one body portion.
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Citations
20 Claims
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1. A thrombi removal device comprising:
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a shaft including a distal end and a proximal end; and a helical coil including a proximal end attached to the distal end of the shaft, a plurality of spaced apart body portions each having bends forming a helix, and a distal tip shaped as a loop, wherein first and second bends formed adjacent the loop orient the loop at an angle relative to a longitudinal axis extending through the helical coil, at least one body portion having an angle relative to the longitudinal axis that is substantially the same as the angle at which the loop is oriented, wherein the loop is oriented at an angle relative to the longitudinal axis such that the distal tip is spaced a distance from the longitudinal axis, the body portions having a substantially same diameter along an entire length of the helical coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A thrombi removal device comprising:
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a shaft including a distal end and a proximal end; and a helical coil including a proximal coil end attached to the distal end of the shaft, a plurality of spaced apart body portions each having bends forming a helix, and a distal coil end shaped as a loop, the loop having a distal tip that defines a most distal part of the helical coil, wherein first and second bends formed adjacent the loop orient the loop at an angle relative to a longitudinal axis extending through the helical coil such that the distal tip is spaced a distance from the longitudinal axis, at least one body portion having an angle relative to the longitudinal axis that is substantially the same as the angle at which the loop is oriented, the body portions having substantially a same diameter along an entire length of the helical coil. - View Dependent Claims (18, 19, 20)
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Specification