Unlock instant, AI-driven research and patent intelligence for your innovation.

Rotational atherectomy device with keyed exchangeable drive shaft

A coronary artery and drive shaft technology, applied in the field of coronary atherectomy devices and atherosclerotic plaques, can solve problems such as device failures

Inactive Publication Date: 2012-07-11
CARDIOVASCULAR SYST INC
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This "recoil" can be forceful enough to loosen the friction fit, causing failure of the device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Rotational atherectomy device with keyed exchangeable drive shaft
  • Rotational atherectomy device with keyed exchangeable drive shaft
  • Rotational atherectomy device with keyed exchangeable drive shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The present invention discloses an atherectomy device with a replaceable drive shaft having a mechanical coupling that allows the drive shaft to translate axially while maintaining the drive shaft rotatably locked to a prime mover. The coupler is geometrically keyed, with one side of the coupler having an opening having a specific inner section and the other side of the coupler having an outer section matching all or part of the corresponding inner section. The bond shape can be a hexagon, square, n-sided polygon, star, or any other suitable shape. The bond may optionally include one or more rounded corners to simplify manufacturing. Option to lock axial translation around keyed coupling elements using two twist lock connections.

[0040] The preceding paragraph is only a summary and should not be construed as any limitation of the invention. A more detailed description follows.

[0041] figure 1 An existing atherectomy device with a replaceable drive shaft cartridg...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An atherectomy device with an exchangeable drive shaft is disclosed, having a mechanical coupling that can allow for axial translation of the drive shaft while keeping the drive shaft rotationally locked to the prime mover. The coupling is geometrically keyed, with one side of the coupling having an aperture with a particular internal cross-section, and the other side of the coupling having an external cross-section that matches all or a part of the corresponding internal cross-section. Key shapes may be hexagonal, square, n-sided polygonal, star-shaped, or any other suitable shape. The keys may optionally include one or more rounded corners to simplify manufacturing. Axial motion may be locked by an optional twist-lock connection of two elements that surround the keyed coupling.

Description

[0001] inventor [0002] R. D. Welty, U.S. citizen, residing in Blaine, Minnesota. [0003] Cross References to Related Applications [0004] No [0005] Statement Regarding Federally Sponsored Research or Development [0006] No technical field [0007] The present invention relates to devices and methods for ablation of tissue from a bodily passage, such as atherosclerotic plaque in a vascular artery using an atherectomy device. In particular, the invention relates to improvements in atherectomy devices having replaceable drive shafts. Background technique [0008] Various techniques and devices have been developed for removing or repairing tissue in arteries and similar body passages. A common purpose of such techniques and devices is to remove atherosclerotic plaque from a patient's arteries. Atherosclerosis is characterized by the accumulation of fatty deposits (atheroma) in the intimal layer (ie, subendothelium) of a patient's blood vessels. Initially deposited,...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22
CPCA61B17/320758A61B17/32A61B2017/0046A61B17/3207A61B2017/00486A61B2017/00477
Inventor R·D·韦尔蒂
Owner CARDIOVASCULAR SYST INC