Perfusion lead and method of use
First Claim
1. A medical electrical lead for use in a body, comprising:
- an elongated lead body having a proximal end and a distal end; and
an inflatable member coupled to the distal end of the lead adapted to selectively engage a cardiac vein or coronary artery, wherein the inflatable member is formed of a bio-absorbable material.
1 Assignment
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Accused Products
Abstract
A medical electrical lead including an inflatable member at a distal tip section, and a system of use, are disclosed. The inflation member is adapted to engage the walls of a cardiac vein or coronary artery to occlude the vessel. According to one aspect of the invention, the inflation member is formed of a bio-absorbable material. In another embodiment, the inflation member is a micro-porous material. The lead of the current invention may include a port located distal to the inflation member to deliver radiopaque dye or any other substance to a vessel when the inflation member is in the inflated state. This allows a fluoroscopic image of a patient'"'"'s vascular system to be obtained while the lead is in place within a vessel. A perfusion lumen may be provided to allow a partial flow of blood to continue around the inflation member when the inflation member is occluding a vessel. In one embodiment, lead is provided with a lumen for receiving a stiffening member such as a stylet to aid in lead placement. According to one method of using the current invention, inflation member may be inflated after the lead is placed at a desired implant site to provide a temporary fixation mechanism during withdrawal of the stiffening member and/or a guide catheter or sheath used to place the lead at the implant site. This temporary fixation mechanism may also be employed to retain a desired lead location while thresholds are obtains. The inflation member may be retained in an inflated state for a longer predetermined period of time until tissue in-growth begins to occur around the lead.
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Citations
16 Claims
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1. A medical electrical lead for use in a body, comprising:
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an elongated lead body having a proximal end and a distal end; and
an inflatable member coupled to the distal end of the lead adapted to selectively engage a cardiac vein or coronary artery, wherein the inflatable member is formed of a bio-absorbable material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for placing a lead within a body, including the methods of:
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a.) placing a lead at a predetermined implant site within the body;
b.) inflating a inflation member carried on the lead to at least partially occlude a vessel of the body, and maintaining the inflation member in the inflated position for a predetermined period of time until tissue in-growth begins to occur;
c.) releasing fluoro-visible medium from a port located distal of the inflation member on the lead; and
d.) using the fluoro-visible medium to obtain data indicative of the body structure, wherein the method of maintaining the inflation member in the inflated position for a predetermined period of time is accomplished by allowing liquid inside the inflation member to diffuse into the body at a predetermined rate. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for placing a lead within a body, including the methods of:
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a.) placing a lead at a predetermined implant site within the body;
b.) inflating a inflation member carried on the lead to at least partially occlude a vessel of the body, and maintaining the inflation member in the inflated position for a predetermined period of time until tissue in-growth begins to occur;
c.) releasing fluoro-visible medium from a port located distal of the inflation member on the lead; and
d.) using the fluoro-visible medium to obtain data indicative of the body structure, wherein the method of maintaining the inflation member in the inflated position for a predetermined period of time is accomplished by providing an inflation member formed of bio-absorbable material that is absorbed by the body at a predetermined rate.
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Specification