Eccentric abrading and cutting head for high-speed rotational atherectomy devices

一种研磨头、旋切术的技术，应用在手术切割器械、内窥镜切割器械、研磨手术刀等方向

Active Publication Date: 2012-07-11
CARDIOVASCULAR SYST INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This configuration is limited, however, because, as Clement states in column 3, lines 53-55, the asymmetric burr rotates "at a lower speed than a high-speed atherectomy device" "to counteract heat and imbalance"

Method used

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  • Eccentric abrading and cutting head for high-speed rotational atherectomy devices
  • Eccentric abrading and cutting head for high-speed rotational atherectomy devices
  • Eccentric abrading and cutting head for high-speed rotational atherectomy devices

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Embodiment Construction

[0049] Since the present invention has various reasonable modifications or substitutions, the details of the present invention are presented herein by providing drawings and detailed descriptions. It should be noted, however, that the intention is not to limit the invention to the particular described embodiments. On the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present invention.

[0050] figure 1 One embodiment of the atherectomy device disclosed in commonly assigned US Patent Application No. US 11 / 761,128 is shown. The device includes a handle 10 , an elongated flexible drive shaft 20 having an eccentrically enlarged abrading head 28 , and an elongated catheter 13 extending distally from the handle 10 . As known to those skilled in the art, the drive shaft 20 is formed from a helically wound wire to which the grinding head 28 is secured. Further, for the various drive shaft embodiments ...

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PUM

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Abstract

The invention provides a rotational atherectomy device having, in various embodiments, a flexible, elongated, rotatable drive shaft with at least one flexible or inflexible eccentric enlarged abrading and cutting head attached thereto which comprises an abrasive surface. When placed against stenotic tissue and rotated at high speed, the eccentric nature of the abrading and cutting head moves along an orbital path, opening the lesion to a diameter larger than the resting diameter of the enlarged abrading and cutting head. Preferably the abrading and cutting head has a center of mass spaced radially from the rotational axis of the drive shaft, facilitating the ability of the device to travel along an orbital path. The abrading and cutting head comprises proximal and / or distal radiused surfaces that facilitate cutting difficult stenosis material while minimizing trauma to the vessel. In some cases, the abrading and cutting head is made from a relatively dense metal.

Description

[0001] inventor [0002] M.D. Ken Bruni, a U.S. citizen residing in Mounds View, Minnesota; [0003] C.A. Providey, a U.S. citizen, lives north of Hugo, Minnesota. [0004] Cross References to Related Applications [0005] This application references in part US application US 12 / 130,024, filed May 30, 2008. [0006] Statement Regarding Federally Sponsored Research or Development [0007] No technical field [0008] The present invention relates to devices and methods for removing tissue from passages in the body, such as atherosclerotic plaque from arteries using high-speed atherectomy devices. Background technique [0009] Various techniques and devices have been developed for removing or repairing tissue in arteries and similar body passages. A common purpose of this technique and device is to remove atherosclerotic plaque in a patient's arteries. Atherosclerosis is characterized by the accumulation of fatty deposits (atheromas) in the intimal layer (ie, subendotheli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22
CPCA61B2017/320766A61B17/32037A61B17/32002A61B2017/320004A61B17/3207
Inventor M·D·肯布鲁尼C·A·普罗维
Owner CARDIOVASCULAR SYST INC
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