Back to results
US 9,750,526 B2Granted
Rotational atherectomy device with exchangeable drive shaft and meshing gears
AssigneeCardiovascular Systems, Inc.
InventorsJoseph P. Higgins, Nicholas W. Rydberg
Life of this patent
Estimating the term…
Abstract
An atherectomy device with an exchangeable drive shaft is disclosed, having a drive shaft gear at a distal end of the exchangeable drive shaft for meshing engagement with a prime mover gear on the output shaft of the prime mover. The exchangeable drive shaft is inserted into an opening at the distal end of the handle housing and moved axially in a proximal direction. Surface features on at least the prime mover housing and the engageable drive shaft help to align the drive shaft gear with the prime mover gear for meshing engagement.
Claims30
A device, comprising:
- a handle, comprising:
- a proximal section;
- a distal section comprising a channel within an interior thereof, the channel extending proximally from an opening at a distal end of the handle;
- and
- an elongated hollow intermediate section between the proximal and the distal sections, the intermediate section comprising:
- an opening to the channel in the distal section;
- and
- an elongated slot through a wall of the handle, the slot extending into the hollow of the intermediate section;
- a prime mover carriage disposed within the hollow of the intermediate section, the prime mover carriage comprising:
- a prime mover;
- and
- a gear assembly, comprising:
- a prime mover gear fixedly attached to a shaft of the prime mover;
- and
- a drive shaft gear rotatably coupled with the prime mover gear;
- and
- a drive shaft cartridge, comprising:
- a nosecone, comprising:
- an opening at a proximal end thereof;
- and
- a hollow extending distally from the opening at the proximal end of the nosecone;
- a telescoping lumen extending proximally from an opening at a distal end of the nosecone and through the opening at the proximal end of the nosecone, the telescoping lumen comprising a proximal end configured for removable coupling with the drive shaft gear;
- an elongated support member coupled with at least a portion of the telescoping lumen, the support member comprising a distal section configured for insertion into the hollow of the nosecone and for removable coupling with the nosecone;
- and
- an elongated flexible drive shaft comprising a proximal end fixedly attached to the proximal end of the telescoping lumen and extending distally therefrom through the telescoping lumen and through the opening at the distal end of the nosecone;
- wherein, the hollow of the intermediate section and the prime mover carriage are configured for enabling longitudinal displacement of the prime mover carriage within the intermediate section.
23 more elements
A device, comprising:
- a handle, comprising:
- a proximal section;
- a distal section comprising a channel within an interior thereof, the channel extending proximally from an opening at a distal end of the handle;
- and
- an elongated hollow intermediate section between the proximal and the distal sections, the intermediate section comprising:
- an opening to the channel in the distal section;
- and
- an elongated slot through a wall of the handle, the slot extending into the hollow of the intermediate section;
- a prime mover carriage disposed within the hollow of the intermediate section, the prime mover carriage comprising:
- a prime mover;
- and
- a gear assembly, comprising:
- a prime mover gear fixedly attached to a shaft of the prime mover;
- and
- a drive shaft gear rotatably coupled with the prime mover gear;
- and
- a drive shaft cartridge, comprising:
- a nosecone, comprising:
- an opening at a proximal end thereof;
- and
- a hollow extending distally from the opening at the proximal end of the nosecone;
- a telescoping lumen extending proximally from an opening at a distal end of the nosecone and through the opening at the proximal end of the nosecone, the telescoping lumen comprising a proximal end configured for removable coupling with the drive shaft gear;
- and
- an elongated flexible drive shaft comprising a proximal end fixedly attached to the proximal end of the telescoping lumen and extending distally therefrom through the telescoping lumen and through the opening at the distal end of the nosecone;
- wherein, the hollow of the intermediate section and the prime mover carriage are configured for enabling longitudinal displacement of the prime mover carriage within the intermediate section.
22 more elements
A device, comprising:
- a handle, comprising:
- a proximal section;
- a distal section comprising a channel within an interior thereof, the channel extending proximally from an opening at a distal end of the handle;
- and
- an elongated hollow intermediate section between the proximal and the distal sections, the intermediate section comprising:
- an opening to the channel in the distal section;
- and
- an elongated slot through a wall of the handle, the slot extending into the hollow of the intermediate section;
- a prime mover carriage disposed within the hollow of the intermediate section, the prime mover carriage comprising:
- a prime mover;
- and
- a gear assembly, comprising:
- a prime mover gear fixedly attached to a shaft of the prime mover;
- a drive shaft gear rotatably coupled with the prime mover gear;
- and
- a lumen coupler;
- wherein, the drive shaft gear and the lumen coupler are coaxial;
- a drive shaft cartridge, comprising:
- a nosecone, comprising:
- an opening at a proximal end thereof;
- and
- a hollow extending distally from the opening at the proximal end of the nosecone;
- a telescoping lumen extending proximally from an opening at a distal end of the nosecone and through the opening at the proximal end of the nosecone;
- and
- an elongated flexible drive shaft comprising a proximal end extending proximally of a proximal end of the telescoping lumen, the drive shaft extending distally through the telescoping lumen and through the opening at the distal end of the nosecone;
- wherein:
- the hollow of the intermediate section and the prime mover carriage are configured for enabling longitudinal displacement of the prime mover carriage within the intermediate section;
- the lumen coupler and the proximal end of the telescoping lumen are configured for removable coupling;
- the drive shaft gear and the proximal end of the drive shaft are configured for removable coupling;
- a first connector for:
- releasably coupling the nosecone and at least a portion of the telescoping lumen;
- and
- inhibiting telescoping of the telescoping lumen;
- and
- a first release mechanism for uncoupling the. nosecone and the telescoping lumen.
32 more elements
Dependencies are inferred from the claim text.