Compression resistant sheath
AssigneeBoston Scientific Scimed, Inc.
InventorBenjamin Mihelich
Life of this patent
Estimating the term…
Abstract
An elongate tubular shaft having a lumen extending from a proximal portion to a distal portion may include an outer jacket forming an outer surface of the elongate tubular shaft, the outer jacket being formed from a first material having a first modulus of elasticity, a helical member extending from the proximal portion to the distal portion, a braided support member disposed about the helical member, and a strain relief layer formed from a second material having a second modulus of elasticity less than the first modulus of elasticity, wherein the strain relief layer is disposed about the helical member and radially inward of the outer jacket.
Claims11
An elongate tubular shaft having a lumen extending from a proximal portion to a distal portion, the elongate tubular shaft comprising:
- an outer jacket forming an outer surface of the elongate tubular shaft, the outer jacket being formed from a first material having a first modulus of elasticity;
- a helical member extending from the proximal portion to the distal portion, the helical member comprising a plurality of adjacent windings in physical contact with each other when the elongate tubular shaft is in a straightened configuration;
- a braided support member disposed about the helical member and in physical contact with the helical member, the helical member and braided support member providing column strength to the elongate tubular shaft;
- and
- a strain relief layer formed from a second material having a second modulus of elasticity less than the first modulus of elasticity;
- wherein the braided support member is embedded within the strain relief layer and the strain relief layer is disposed about the helical member.
An elongate tubular shaft having a lumen extending from a proximal portion to a distal portion, the elongate tubular shaft comprising:
- an outer jacket forming an outer surface of the elongate tubular shaft, the outer jacket being formed from a first material;
- a helical member extending axially about a central longitudinal axis of the elongate tubular shaft from the proximal portion to the distal portion, wherein a radially inward facing surface of the helical member defines the lumen;
- a braided support member disposed on and in physical contact with an outer surface of the helical member;
- and
- a strain relief layer formed from a second material different from the first material;
- wherein the strain relief layer is disposed about the helical member and radially inward of the outer jacket.
Dependencies are inferred from the claim text.