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US 11,957,847 B2Granted
Asymmetric catheter curve shapes
AssigneeSt. Jude Medical, Cardiology Division, Inc.
InventorAlexander Carson Houck
Life of this patent
Estimating the term…
Abstract
A deflectable catheter shaft with compression resistance coils configured to create different curve shapes when the catheter is steered or deflected in different directions. One or more compression resistance coils may include an elongated-pitch section. The compression resistance coils may be pull wire compression coils or body compression coils.
Claims20
A steerable catheter comprising
- a proximal catheter shaft section comprising a proximal end, a distal end, and a central lumen;
- a distal deflectable section adjacent to the distal end of the proximal catheter shaft section, the distal deflectable section comprising a proximal end and a distal end;
- a body compression coil surrounded by the proximal catheter shaft section and extending longitudinally through the central lumen from the proximal end of the proximal catheter shaft section to a first region at the proximal end of the distal deflectable section, the body compression coil comprising a central lumen;
- a first pull wire extending longitudinally through the central lumen of the body compression coil from the proximal end of the proximal catheter shaft section to a second region at the proximal end of the distal deflectable section, the second region being distal to the first region;
- a second pull wire extending longitudinally, parallel to the first pull wire, through the central lumen of the body compression coil from the proximal end of the proximal catheter shaft section to the second region at the proximal end of the distal deflectable section;
- and
- a first pull wire compression coil surrounding the first pull wire within the body compression coil, the first pull wire compression coil extending longitudinally from the proximal end of the proximal catheter shaft section to the second region at the proximal end of the distal deflectable section.
4 more elements
A method of manufacturing a steerable catheter comprising providing a proximal catheter shaft section comprising a proximal end, a distal end, and a central lumen;
- providing a distal deflectable section adjacent to the distal end of the proximal catheter shaft section, the distal deflectable section comprising a proximal end and a distal end;
- providing a body compression coil surrounded by the proximal catheter shaft section and extending longitudinally through the central lumen from the proximal end of the proximal catheter shaft section to a first region at the proximal end of the distal deflectable section, the body compression coil comprising a central lumen;
- providing a first pull wire extending longitudinally through the central lumen of the body compression coil from the proximal end of the proximal catheter shaft section to a second region at the proximal end of the distal deflectable section, the second region being distal to the first region;
- providing a second pull wire extending longitudinally, parallel to the first pull wire, through the central lumen of the body compression coil from the proximal end of the proximal catheter shaft section to the second region at the proximal end of the distal deflectable section;
- and
- providing a first pull wire compression coil surrounding the first pull wire within the body compression coil, the first pull wire compression coil extending longitudinally from the proximal end of the proximal catheter shaft section to the second region at the proximal end of the distal deflectable section.
3 more elements
Dependencies are inferred from the claim text.