US 2010/0168785 A1Published application

Embolic protection device and method of use

AssigneeCook Incorporated

InventorFred T. Parker

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Abstract

A medical device for embolic protection within a patient's body vessel is provided. The device comprises inner and outer tubular members each having proximal and distal ends and a lumen formed through the proximal and distal ends. A flexible everting filter portion includes a body having a first end attached to the distal end of the inner tubular member and a second end attached to the distal end of the outer tubular member. The inner and outer tubular members are movable relative to one another to position the filter portion within the body vessel. The filter portion is movable from a collapsed, everted delivery and removal configuration to an expanded, generally non-everted deployed configuration. The filter portion expands radially outward to engage the filter body with an enclosing vessel wall. The filter portion allows the passage of blood cells and prevents the passage of emboli or thrombi through the body vessel.

Claims20

Dependent claims

A medical device for embolic protection within a patient's body vessel, the medical device comprising:

an outer catheter having a proximal end and a distal end, the outer catheter having an outer lumen formed through the proximal and distal ends defining a proximal opening at the proximal end and a distal opening at the distal end of the outer catheter;
an inner catheter movable within the outer catheter and having a proximal end and a distal end, the inner catheter having an inner lumen formed through the proximal and distal ends defining a proximal opening at the proximal end and a distal opening at the distal end of the inner catheter;
and
a flexible filter portion having a body extending from a first end to a second end, the first end being attached to the distal end of the inner catheter and the second end being attached to the distal end of the outer catheter, the outer catheter and the inner catheter movable relative to one another to move the filter portion between a collapsed state for delivery and removal of the device and an expanded state for engaging the filter body with a body vessel wall, the distal end of the inner catheter being arranged proximal to the distal end of the outer catheter such that the filter body is everted and defines a distal cavity within the distal end of the outer catheter in the collapsed state, the distal end of the inner catheter being movable distal to the distal end of the outer catheter such that the filter body is generally non-everted and defines a cylindrical body extending distally from the distal end of the outer catheter in the expanded state, the distal ends of the outer catheter and the inner catheter being longitudinally separated by approximately the length of the filter body in the collapsed state and in the expanded state.

1 more element

A medical device for capturing emboli in a patient's body vessel, the medical device comprising:

an elongate outer tubular member and an elongate inner tubular member movable within the outer tubular member, each of the outer and inner tubular members having a proximal end and a distal end and a lumen formed through the proximal and distal ends defining a proximal opening at the proximal end and a distal opening at the distal end;
and
a flexible everting filter portion having a body extending from a first end to a second end, the first end being attached to the distal end of the inner tubular member and the second end being attached to the distal end of the outer tubular member, the filter portion movable between a collapsed insertion and removal configuration and an expanded deployed configuration, the filter portion being compressed in an everted state within the distal end of the outer tubular member in the collapsed configuration, the inner and outer tubular members being movable relative to one another to distally extend the filter portion from the outer tubular member, the filter portion being biased to expand radially outward to engage the filter body with an enclosing body vessel wall in the expanded configuration.

A method of embolic protection during a medical procedure in a patient's body vessel, comprising the steps of:

inserting a medical device into an operative position within the body vessel, the medical device including an outer tubular member and an inner tubular member movable within the outer tubular member, each of the outer and inner tubular members having a proximal end and a distal end and a lumen formed through the proximal and distal ends defining a proximal opening at the proximal end and a distal opening at the distal end, the medical device further comprising a flexible filter portion having a body extending from a first end to a second end, the first end being attached to the distal end of the inner tubular member and the second end being attached to the distal end of the outer tubular member, the filter portion being compressed in an everted state within the distal end of the outer tubular member defining a collapsed configuration during insertion of the medical device;
deploying the filter portion within the body vessel to an expanded configuration wherein the filter portion extends distally from the outer tubular member and is biased to expand radially outward to engage the filter body with an enclosing body vessel wall;
inserting an elongate medical instrument through the lumen of the inner tubular member to perform the medical procedure within the body vessel, wherein the filter portion allows the passage of blood cells to surrounding vessels and prevents emboli from entering surrounding vessels;
removing the elongate medical instrument from within the inner tubular member and the body vessel;
and
removing the medical device from within the body vessel.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/345,127Filed 29 Dec 2008
Published: 1 Jul 2010
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

A61F 2/014
Distal protection devices, i.e. devices placed distally in combination with another endovascular procedure, e.g. angioplasty or stenting:…
A61B 17/221
Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones;…
A61B 2017/2212
Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions: having a closed distal end, e.g. a loop
A61F 2002/016
Filters implantable into blood vessels: made from wire-like elements

Family

US 8,388,644 B2Related patent
US 2010/0168785 A1This patent

From the US filing history. Foreign family members aren’t listed.

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