Method of forming medical devices: intra-vascular occlusion devices
First Claim
1. A method of forming a medical device for deployment in a channel in a patient'"'"'s body, the device having a preset expanded configuration and a collapsed configuration enabling passage of the device through a catheter, comprising the steps of:
- a) providing a fabric formed of a plurality of strands having a first relative orientation with respect to one another, the strands being formed of a material which can be heat treated to substantially set a desired shape;
b) generally conforming the fabric to an internal surface of a molding element to substantially define the device'"'"'s expanded configuration;
c) treating the fabric while conformed to the internal surface of the molding element to substantially set the strands in their expanded configuration; and
d) removing the fabric from contact with the internal surface of the molding element, whereby the fabric defines a medical device which can be deformed into its collapsed configuration for passage through a catheter for deployment in a channel of a patient'"'"'s body, and which substantially resumes its preset expanded configuration in such channel.
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Accused Products
Abstract
The present invention provides a method of forming a medical device and medical devices which can be formed in accordance with the method. In one embodiment, the method includes the steps of a) providing a metal fabric formed of a plurality of strands formed of a metal which can be heat treated to substantially set a desired shape; b) deforming the metal fabric to generally conform to a surface of a molding element; c) heat treating the metal fabric in contact with the surface of the molding element to substantially set the shape of the fabric in its deformed state; and d) removing the metal fabric from contact with the molding element. The resulting metal fabric will define a medical device which can be collapsed for passage through a catheter or the like for deployment in a channel of a patient'"'"'s body. Medical devices made in accordance with this method can have varying structures.
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Citations
13 Claims
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1. A method of forming a medical device for deployment in a channel in a patient'"'"'s body, the device having a preset expanded configuration and a collapsed configuration enabling passage of the device through a catheter, comprising the steps of:
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a) providing a fabric formed of a plurality of strands having a first relative orientation with respect to one another, the strands being formed of a material which can be heat treated to substantially set a desired shape;
b) generally conforming the fabric to an internal surface of a molding element to substantially define the device'"'"'s expanded configuration;
c) treating the fabric while conformed to the internal surface of the molding element to substantially set the strands in their expanded configuration; and
d) removing the fabric from contact with the internal surface of the molding element, whereby the fabric defines a medical device which can be deformed into its collapsed configuration for passage through a catheter for deployment in a channel of a patient'"'"'s body, and which substantially resumes its preset expanded configuration in such channel. - View Dependent Claims (2, 3)
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4. A method of forming a medical device for deployment in a channel in a patient'"'"'s body, the device having a preset expanded configuration and a collapsed configuration enabling passage of the device through a catheter, comprising the steps of:
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a) providing a fabric formed of a plurality of strands having a first relative orientation with respect to one another, said strands each having a proximal end and a distal end, and said strands being formed of a material which can be heat treated to substantially set a desired shape;
b) securing at least one of the proximal end and distal end of said strands at a common endpoint;
c) generally conforming the fabric to a molding element to substantially define a shape of an expanded configuration of the device;
d) treating the fabric while conformed to the molding element to substantially set the strands in the shape of the expanded configuration of the device; and
e) removing the fabric from contact with the molding element, whereby the device formed thereby can be deformed into a collapsed configuration for passage through a catheter for deployment in a channel of a patient'"'"'s body, and which substantially resumes the expanded configuration in such channel. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification