Medical device with non-metallic reinforcing layer

Patent metadata

Field	Value
Publication number	US-11890427-B2
Application number	US-201815860759-A
Country	US
Kind code	B2
Filing date	Jan 3, 2018
Priority date	Jan 3, 2017
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A medical device, such as an electrophysiology catheter, has an elongate body including a wall. A reinforcing layer is encapsulated in the wall. The reinforcing layer includes one or more reinforcing fibers having glass cores and polymer claddings. In embodiments, the one or more reinforcing fibers are non-magnetically-susceptible and non-electrically-conductive, facilitating use of the medical device in connection with procedures such as magnetic resonance imaging (“MRI”).

First claim

What is claimed is:

1. A shaft for a medical device configured for use in a human vasculature, the shaft comprising:
an elongate structure comprising:
a tubular inner layer;
a braided reinforcing layer around an outer surface of the tubular inner layer, the reinforcing layer comprising a plurality of reinforcing fibers, wherein each reinforcing fiber of the plurality of reinforcing fibers comprises a glass core surrounded by a polymer cladding; and
an outer layer bonded to the inner layer such that the reinforcing layer is encapsulated between a material of the outer layer and a material of the inner layer.

2. The shaft according to claim 1 , wherein the polymer cladding comprises a polyimide cladding.

3. The shaft according to claim 1 , wherein the plurality of reinforcing fibers are non-magnetically-susceptible and non-electrically-conductive.

4. The shaft according to claim 1 , wherein the glass core comprises a doped glass core.

5. The shaft according to claim 1 , wherein an overall diameter of each reinforcing fiber of the plurality of reinforcing fibers does not exceed 65 μm.

6. The shaft according to claim 5 , wherein a diameter of the glass core is between 50 and 55 μm.

Assignees

• St Jude Medical Cardiology Div Inc

Inventors

• Tegg Troy T
• Just Dale E

Classifications

• A61M25/005 Primary

  with embedded materials for reinforcement, e.g. wires, coils, braids · CPC title

• A61M25/0012 Primary

  with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils · CPC title

• A61M25/0045

  multi-layered, e.g. coated (coating materials A61L29/08) · CPC title

• A61M25/0108

  using radio-opaque or ultrasound markers · CPC title

• B29C61/025

  for the production of hollow or tubular articles · CPC title