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A marker band and medical devices such as catheters and guidewires that include a marker band. A marker band may include a generally cylindrical body portion having one or more slots or openings defined therein. The marker band is configured for being secured to a medical device. Methods of making a

A marker band and medical devices such as catheters and guidewires that include a marker band. A marker band may include a generally cylindrical body portion having one or more slots or openings defined therein. The marker band is configured for being secured to a medical device. Methods of making and using a marker band and a medical device having a marker band are also disclosed.

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What is claimed is: 1. A medical device, comprising: a tubular member having a proximal end region and a distal end region; a radiopaque marker band disposed over the tubular member, the marker band having an outer surface and an inner surface with one or more openings through the outer surface of

What is claimed is: 1. A medical device, comprising: a tubular member having a proximal end region and a distal end region; a radiopaque marker band disposed over the tubular member, the marker band having an outer surface and an inner surface with one or more openings through the outer surface of the marker band; and an outer layer disposed over the outer surface of the marker band, wherein the outer layer extends from the outer surface of the marker band into the openings in the marker band, completely fills the openings, and is at least partially disposed between the tubular member and the inner surface of the radiopaque marker. 2. The medical device of claim 1, wherein the openings are defined by generally circular holes formed in the marker band. 3. The medical device of claim 1, wherein the openings are defined by generally oval holes formed in the marker band. 4. The medical device of claim 1, wherein the marker band includes two or more holes. 5. The medical device of claim 4, wherein the holes are aligned on opposite sides of the marker band. 6. The medical device of claim 4, wherein on opposite sides of the marker band the holes are offset. 7. The medical device of claim 1, wherein the outer layer extends through the openings and under a portion of the inner surface of the marker band. 8. The medical device of claim 1, wherein the marker band includes a proximal end region and a distal end region, and wherein the openings are defined by one or more slits in the proximal end region, the distal end region, or both. 9. The medical device of claim 8, wherein the slits are in the proximal end region and the distal end region, and wherein the slits in the proximal end region are aligned with the slits in the distal end region. 10. The medical device of claim 8, wherein the slits are in the proximal end region and the distal end region, and wherein the slits in the proximal end region are staggered relative to the slits in the distal end region. 11. A medical device, comprising: a tubular member having a proximal end region and a distal end region; a radiopaque marker band disposed over the tubular member, the marker band having an outer surface and an inner surface with one or more openings through the outer surface of the marker band; an outer layer surrounding the marker band, wherein the outer layer extends from the outer surface of the marker band into the openings in the marker band, completely fills the openings, and is at least partially disposed between the tubular member and the inner surface of the radiopaque marker; and wherein the tubular member includes an outer surface, and wherein the outer surface is defined by a fluorocarbon polymer. 12. A medical device, comprising: an elongate core member having a proximal end region and a distal end region; a radiopaque marker band disposed over the core member, the marker band having one or more slits defined therein, the marker band having an inner surface and an outer surface; and a coating disposed over the outer surface of the marker band, wherein the coating extends from the outer surface of the marker band toward the core member and completely fills the one or more slits of the marker band; wherein the coating is at least partially disposed between the core member and the inner surface of the radiopaque marker. 13. The medical device of claim 12, wherein the core member forms a catheter shaft. 14. The medical device of claim 12, wherein the core member forms a guidewire. 15. The medical device of claim 12, wherein the coating extends through the slit of the marker band and along a portion of the inner surface of the marker band. 16. A guide catheter comprising: an inner tubular member having a proximal region and a distal region; a radiopaque marker band disposed over a portion of the inner tubular member at a selected location in the distal region, the radiopaque marker having an inner surface and an outer surface with at least one opening extending from the inner surface to the outer surface; and an outer layer extending over the marker band and at least a portion of the inner tubular member, wherein a portion of the outer layer extends through the at least one opening and is in contact with the inner tubular member and completely fills the at least one opening; wherein the outer layer is at least partially disposed between the inner tubular member and the inner surface of the radiopaque marker. 17. The guide catheter of claim 16, wherein the outer layer includes multiple segments of polymeric material having desired property variations. 18. The guide catheter of claim 16, wherein the portion of the outer layer extending through the at least one hole forms a bond to the inner tubular member.