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Vaso-occlusive coil with curved sections

A segmented and curved technology, applied in the field of vaso-occlusive devices, can solve problems such as complex orientation

Active Publication Date: 2018-10-09
STRYKER CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This complicates orientation during delivery

Method used

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  • Vaso-occlusive coil with curved sections
  • Vaso-occlusive coil with curved sections
  • Vaso-occlusive coil with curved sections

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Embodiment Construction

[0021] For the following defined terms, unless a different definition is given in the claims or elsewhere in this specification, these definitions shall apply.

[0022] All numerical values ​​herein, whether expressly indicated or not, are considered to be modified by the term "about". The term "about" generally refers to a range of numbers that one would consider equivalent to the stated value (ie, having the same function or result). In many instances, the term "about" may include numbers that are rounded to the nearest significant figure.

[0023] The recitations of numerical ranges by endpoints include all numbers falling within that range (eg, 1 to 5 includes 1, 1.5, 2, 2.75, 3, 3.80, 4, and 5).

[0024] As used in this specification and the appended claims, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. As used in this specification and the appended claims, the term "or" generally includes "and / or" unless ...

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Abstract

A vaso-occlusive device (10) formed from a strand of elongated material (16) wound by a winding process into a helical coil having a length wherein the coil has one or more The mechanical stress or strain experienced by each discontinuous section (14) during the winding process is less than the stress or strain experienced by the remainder of the coil (12), such that the one or more discontinuous regions Each of the segments is less rigid and more flexible than the corresponding stiffness and flexibility of the rest of the coil, and such that when the coil is delivered into the aneurysm Each of the one or more discrete segments acts as a bend location along the length of the coil when within.

Description

technical field [0001] The technical field of the invention relates generally to vaso-occlusive devices for implantation in blood vessels of human or animal patients for embolization or vascular occlusion. More specifically, the present invention relates to vaso-occlusive coils having curved sections fabricated along their length. Background technique [0002] Vaso-occlusive devices or implants may be used for a variety of reasons, including the treatment of intravascular aneurysms. A commonly used vaso-occlusive device comprises a flexible, helically wound coil formed by winding a platinum (or platinum alloy) wire bundle or filament around a "master" mandrel. This coil is then wound around a larger "secondary" mandrel and heat-treated to form the secondary shape. For example, U.S. Patent No. 4,994,069 to Ritchart et al. describes a vaso-occlusive device that, when expanded for placement through the lumen of a delivery catheter, assumes a linear helical primary shape that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/12
CPCA61B17/12145A61B2017/00526A61B17/12154A61B17/12113A61B17/12031A61B17/1214
Inventor 克利福德·泰奥
Owner STRYKER CORP