Interventional medical device component having an interrupted spiral section and method of making the same
First Claim
1. A component of an interventional neurovascular implant medical device, the component being movable through a micro-catheter within a body neurovascular vessel, comprising:
- a generally hollow tubular portion including a spiral ribbon having adjacent turns, said ribbon being between a helically oriented pathway of a plurality of open sections alternating with bridge members in end-to-end fashion along the helically oriented pathway, each bridge member being out of axial alignment with each bridge member immediately adjacent thereto,wherein said spiral ribbon defines a relatively rigid region, a relatively flexible region, and a first transition region between the relatively rigid region and the relatively flexible region,wherein the helically oriented pathway has a first pitch in the relatively rigid region, a second pitch in the relatively flexible region, and a third pitch in the first transition region, the first pitch being greater than the third pitch and the third pitch being greater than the second pitch, andwherein each bridge member has an arcuate extent in a range of approximately 10° and
approximately 65°
, wherein each cut section has an arcuate extent in a range of approximately 45° and
approximately 270°
, and wherein for each bridge member, a sum of the arcuate extents of said bridge member and of a cut section adjacent to said bridge member in said end-to-end fashion is neither a whole number factor of 360°
nor a multiple of 90°
.
3 Assignments
0 Petitions
Accused Products
Abstract
A component for use as or for incorporation within a medical instrument navigable through body vessels of a human subject is provided. The component includes a tubular portion with an interrupted spiral defined by alternating cut and uncut sections. The sum of the arcuate extents of each bridge section and a cut section adjacent to the bridge section in end-to-end fashion is neither a whole number factor of 360 degrees nor a multiple of 90 degrees; this provides uniform rigidity, flexibility, and stretch resistance in all bending planes. The device further includes multiple sections, the pitch of the spiral varying from section to section in order to vary the sections'"'"' flexibilities.
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Citations
17 Claims
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1. A component of an interventional neurovascular implant medical device, the component being movable through a micro-catheter within a body neurovascular vessel, comprising:
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a generally hollow tubular portion including a spiral ribbon having adjacent turns, said ribbon being between a helically oriented pathway of a plurality of open sections alternating with bridge members in end-to-end fashion along the helically oriented pathway, each bridge member being out of axial alignment with each bridge member immediately adjacent thereto, wherein said spiral ribbon defines a relatively rigid region, a relatively flexible region, and a first transition region between the relatively rigid region and the relatively flexible region, wherein the helically oriented pathway has a first pitch in the relatively rigid region, a second pitch in the relatively flexible region, and a third pitch in the first transition region, the first pitch being greater than the third pitch and the third pitch being greater than the second pitch, and wherein each bridge member has an arcuate extent in a range of approximately 10° and
approximately 65°
, wherein each cut section has an arcuate extent in a range of approximately 45° and
approximately 270°
, and wherein for each bridge member, a sum of the arcuate extents of said bridge member and of a cut section adjacent to said bridge member in said end-to-end fashion is neither a whole number factor of 360°
nor a multiple of 90°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A neurovascular implant delivery system device movable through a microcatheter within a neurovascular vessel, comprising:
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a generally hollow tubular portion including a spiral ribbon having adjacent turns, said ribbon being between a helically oriented pathway of a plurality of open sections alternating with a plurality of bridge members in end-to-end fashion along the helically oriented pathway, wherein each bridge member is out of axial alignment with each bridge member of the helically oriented pathway that is immediately adjacent thereto, wherein said spiral ribbon defines a relatively rigid region, a relatively flexible region, and a first transition region between the relatively rigid region and the relatively flexible region, and wherein each bridge member has an arcuate extent in a range of approximately 10° and
approximately 65°
, wherein each cut section has an arcuate extent in a range of approximately 45° and
approximately 270°
, and wherein for each bridge member, a sum of the arcuate extents of said bridge member and of a cut section adjacent to said bridge member in said end-to-end fashion is neither a whole number factor of 360°
nor a multiple of 90°
. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification