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Systems, methods and devices for removing obstructions from a blood vessel

a technology of obstruction and blood vessel, applied in the field of methods and devices for removing obstructions from blood vessels, can solve the problems that the interaction between the balloon catheter and the leading edge of the catheter may tend to shear off portions of the obstruction, and achieve the effects of reducing the likelihood of the obstruction, and reducing the risk of obstruction

Inactive Publication Date: 2005-03-03
STRYKER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides obstruction removal devices and methods for removing obstructions from blood vessels. The devices have an engagement element that can be expanded from a collapsed position to an expanded position to remove the obstruction. The engagement element can be a closed loop or a wound section with filaments that can be expanded and contracted. The devices can be advanced through a guide catheter and can be expanded to slow or stop blood flow when performing other procedures downstream of the guide catheter. The invention also provides a system that includes an obstruction engaging device and a capture element that work together to remove the obstruction. The capture element can be expanded and has a flexible cover attached to it. The invention can be used in various locations and for various purposes.

Problems solved by technology

A problem with the system of U.S. Pat. No. 5,102,415 is that the interaction between the balloon catheter and the leading edge of the catheter may tend to shear off portions of the obstruction.
This can cause obvious problems when working in sensitive vascular areas.

Method used

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  • Systems, methods and devices for removing obstructions from a blood vessel
  • Systems, methods and devices for removing obstructions from a blood vessel
  • Systems, methods and devices for removing obstructions from a blood vessel

Examples

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Embodiment Construction

[0081] Referring now to FIGS. 1-4, a system 2 for removing an obstruction is shown. A guide catheter 4 is advanced to a location proximal to an obstruction. When accessing the cerebral vasculature, for example, the guide catheter 4 is often positioned in the carotid or vertebral artery. Of course, the guide catheter 4 may not be necessary or may be positioned in any other suitable location depending upon the location of the obstruction. The guide catheter 4 preferably has a flow restricting element 6 which restricts or even stops blood flow through the vessel as described below. The flow restricting element 6 is preferably a balloon 5 coupled to a source of inflation fluid 7 which is used to inflate the balloon 5.

[0082] An obstruction removing device 8 is advanced through the guide catheter 4 to the obstruction. A microcatheter 10 may also be positioned within the guide catheter 4 to deliver the obstruction removing device 8 further into the vasculature. The obstruction removing de...

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PUM

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Abstract

A system for removing an obstruction from a blood vessel includes an obstruction engaging element and an expandable capture element. The capture element preferably has a flexible cover and an expandable support structure. The engaging element engages the obstruction and moves the obstruction into the capture element. The capture element protects the obstruction when the obstruction is moved into the catheter.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application is a continuation of application Ser. No. 09 / 891,141, filed Jun. 25, 2001 which is a continuation in part of application Ser. No. 09 / 756,476, filed Jan. 8, 2001, which is a continuation-in-part of application Ser. No. 09 / 605,143, filed Jun. 29, 2000. The full disclosures of each are incorporated herein by reference for all purposes.BACKGROUND OF THE INVENTION [0002] The present invention is directed to methods and devices for removing obstructions from blood vessels. The device may be used to retrieve and remove clots and other biological obstructions. The device may also be used to retrieve embolic coils and the like which have been misplaced or have migrated to an undesirable location. [0003] One such obstruction removal device is disclosed in U.S. Pat. No. 5,895,398 which is hereby incorporated by reference. The device has an expandable engaging member which is introduced into the blood vessel to engage the ob...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/22A61M25/00
CPCA61B17/22031A61F2230/0091A61B18/1492A61B2017/22034A61B2017/2212A61B2017/2215A61B2017/2217A61B2018/00214A61B2018/00898A61F2/013A61M25/0068A61M25/0074A61M25/008A61M25/0082A61F2002/016A61F2002/018A61B17/221
Inventor SEPETKA, IVANDIECK, MARTINGIA, SONMILLER, JOHNNGO, TIFFANY TRANPIERCE, RYAN
Owner STRYKER CORP
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