Blood flow maintaining stent delivery system

• US 20030220680A1
• Filed: 02/03/2003
• Published: 11/27/2003
• Est. Priority Date: 02/04/2002
• Status: Active Grant

• Current Assignee: Kashyap, Ravindra L.
• Original Assignee: Kashyap, Ravindra L.
• Inventors: Kashyap, Ravindra L.
• Granted Patent: US 7,156,870 B2
• Time in Patent Office: Days
• US Class Current: 623/1.11
• CPC Class Codes: A61F 2/95 Instruments specially adapted for placement or removal of stents or stent-grafts

Abstract

The present invention is directed to a Flow Maintaining Stent Delivery System, FMSDS, which can be used in many cardiovascular and surgical procedures, especially for placing stents into patients having stenosed and occluded arteries and other vascular lumens. It can also be used as an examination tool for the vascular surgical operations and to examine small orifice internal or external to the body. Most important, the advantage of the present stent delivery system is that it allows antegrade downstream blood flow to be maximally maintained during stenting procedures, angioplasty procedures or in any other vascular surgical operations that can use this system. The present invention also allows for uniform placement of the stent onto the artery.

Claims

1. A stent delivery system comprising:

a plate mechanism having a plurality of plates configured for forming a circular configuration;

a spring mechanism configured to maintain the plurality of plates in one of a plurality of configurations including the circular configuration;

a stent configured and dimensioned for being supported by a portion of each of the plurality of plates; and

an control mechanism for controlling the spring mechanism to position the plurality of plates in one of the plurality of configurations.

2. The stent delivery system according to claim 1, wherein the control mechanism enables the stent to be positioned against a wall of a body lumen while maintaining flow through the body lumen.

3. The stent delivery system according to claim 1, further comprising a catheter connected to the plate mechanism for guiding the plate mechanism within a body lumen.

4. The stent delivery system according to claim 1, wherein the control mechanism includes at least one control knob for controlling the spring mechanism.

5. The stent delivery system according to claim 4, wherein the at least one control knob includes locking structure for locking the at least one control knob in one of a plurality of positions.

6. The stent delivery system according to claim 1, wherein the spring mechanism includes at least one wire and the control mechanism controls the tensile strength of the at least one wire.