Radiopaque markers for implantable medical leads, devices, and systems

Patent metadata

Field	Value
Publication number	US-11260222-B2
Application number	US-201916720324-A
Country	US
Kind code	B2
Filing date	Dec 19, 2019
Priority date	Apr 30, 2009
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

Radiopaque markers represent that a lead is suitable for a particular medical procedure such as a magnetic resonance image scan and are added to the lead or related device. The markers may be added after implantation of the lead in various ways including suturing, gluing, crimping, or clamping a radiopaque tag to the lead or to the device. The markers may be added by placing a radiopaque coil about the lead, and the radiopaque coil may radially contract against the lead to obtain a fixed position. The markers may be added by placing a polymer structure onto the lead where the polymer structure includes a radiopaque marker within it. The polymer structure may include a cylindrical aperture that contracts against the lead to fix the position of the polymer structure. The polymer structure may form a lead anchor that includes suture wings that can be sutured to the lead.

First claim

The invention claimed is:

1. An implantable medical system comprising:
an implantable medical device comprising a case;
a lead connected to the implantable medical device;
a radiopaque marker having an aperture with a shape indicating MRI safety; and
a structure that affixes the radiopaque marker in a fixed position relative to the implantable medical device on an outside surface of the implantable medical device.

2. The implantable medical system of claim 1 , wherein the lead includes a filar.

3. The implantable medical system of claim 2 , wherein the lead comprises a shield.

4. The implantable medical system of claim 1 , wherein the shape is a wave.

5. The implantable medical system of claim 1 , wherein the structure comprises glue.

6. The implantable medical system of claim 1 , wherein the structure comprises a clamp.

7. The implantable medical device of claim 1 , wherein the structure comprises a suture.

8. An implantable medical system comprising:
an implantable medical device comprising a case;
a lead connected to the implantable medical device;
a radiopaque marker including a feature indicating MRI safety, wherein the feature comprises an aperture with a shape indicating MRI safety; and
a structure that affixes the radiopaque marker in a fixed position relative to the implantable medical device on an outside surface of the implantable medical device, wherein the structure comprises at least one of a glue, a clamp, and a suture.

9. The implantable medical system of claim 8 , wherein the lead includes a filar.

10. The implantable medical system of claim 9 , wherein the lead comprises a shield.

11. The implantable medical system of claim 8 , wherein the shape is a wave.

Assignees

• Medtronic Inc

Inventors

• Olsen James M
• Klardie Michael R
• Stone Richard T
• Cai Chad Q
• Fodness-Bondhus Spencer
• Conroy Mark J
• Abraham Timothy R
• Mehdizadeh Bruce R
• Kern Michael J
• Lahti Jay K

Classifications

• A61N1/3718 Primary

  Monitoring of or protection against external electromagnetic fields or currents · CPC title

• Y10T29/49227

  Insulator making · CPC title

• A61N1/3752

  Details of casing-lead connections · CPC title

• A61N1/05

  for implantation or insertion into the body, e.g. heart electrode (A61N1/06 takes precedence) · CPC title

• Y10T29/49016

  Antenna or wave energy "plumbing" making · CPC title