Magnetically Guided Atherectomy

a magnetic guide and atherectomy technology, applied in the field of removing occlusive material from the lumen of the body, can solve the problems of vascular occlusion and the inability to guide the balloon

Inactive Publication Date: 2005-01-27
HALL ANDREW F +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] The application of external fields and gradients allows the physician to control the orientation and location of the distal tip of the catheter in the vessel at the treatment site. This permits the use of small and potentially single size catheters to treat either partial or total occlusions in the vasculature. In operation the device is moved to various treatment sites or locations in a vessel under the guidance of the MSS. The methods of the invention may be partially automated in the sense that the physician can image the current location of the device and program a desired location

Problems solved by technology

Although balloon angioplasty is probably the most common procedure, there are several drawbacks to this type of device.
One problem is that the vascular occlusion must first be crossed with a guide wire to position the balloon.
If the vessel is totally occluded the wire cannot cross the lesion and therefore cannot be used to guide the balloon.

Method used

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Examples

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Embodiment Construction

[0029]FIG. 1 shows a thermal catheter 10 in a vessel 12. The distal tip section 14 of the device is shown in a vessel while the proximal section 15 is illustrated as a fragment located outside of the vessel 12. In general, the construction of the proximal end of the device and configuration and power couplings are within the ordinary skill of this art and are illustrated schematically in FIG. 1. For clarity the detailed disclosure is directed to the distal tip structures. However it should be recognized that the devices are intended for use in coronary vessels, the overall length of devices in accordance with this invention are 30 or more inches long and typical are between 2 and 12 French in diameter. It should be understood that coronary use is merely illustrative and other vessels and body lumens may be addressed therapeutically using the invention. The proximal end will carry suitable hubs and connections for the wires and lumens discussed in connection with the distal tip.

[003...

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Abstract

Atherectomy devices are guided by and manipulated by externally applied magnetic fields to treat total or partial occlusions of a patient's vasculature.

Description

CROSS-REFERENCE TO RELATED CASES [0001] This application is a continuation patent application of U.S. patent application Ser. No. 09 / 352,161, filed Jul. 12, 1999, which is a continuation-in-part of U.S. patent application Ser. No. 09 / 281,241, filed Mar. 30, 1999, the disclosures of which are incorporated by reference.FIELD OF THE INVENTION [0002] The present invention relates generally to the removal of occlusive material from body lumens, and more particularly both methods and devices for magnetically guided atherectomy of totally occluded arterial vasculature. Catheters which employ thermal as well as other energy sources are disclosed along with complementary equipment for carrying out the procedures. DESCRIPTION OF THE PRIOR ART [0003] Arteriolosclerosis is a progressive disease marked by deposits within the lumen of arterial vessels. Removal of these deposits restores blood flow and is a preferred treatment for this disease. In instances where the vessel cannot be salvaged, byp...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/22A61B17/32A61B18/00A61B18/08A61B18/14A61B18/28A61B19/00A61M25/01
CPCA61B17/22A61M2025/0166A61B17/320758A61B18/08A61B18/1492A61B18/28A61B19/5244A61B2017/00061A61B2017/22042A61B2017/22094A61B2017/320004A61B2018/00011A61B2019/2253A61B2019/5251A61M25/0127A61B17/22012A61B34/73A61B34/20A61B2034/2051
Inventor HALL, ANDREW F.SELL, JONATHAN C.
Owner HALL ANDREW F
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