CA2519166A1 - Medical devices - Google Patents

Medical devices Download PDF

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Publication number
CA2519166A1
CA2519166A1 CA002519166A CA2519166A CA2519166A1 CA 2519166 A1 CA2519166 A1 CA 2519166A1 CA 002519166 A CA002519166 A CA 002519166A CA 2519166 A CA2519166 A CA 2519166A CA 2519166 A1 CA2519166 A1 CA 2519166A1
Authority
CA
Canada
Prior art keywords
contrast agent
agent comprises
medical
contrast
magnetic resonance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002519166A
Other languages
French (fr)
Other versions
CA2519166C (en
Inventor
Sheng-Ping Zhong
Ronald A. Sahatjian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Boston Scientific Ltd Barbados
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2519166A1 publication Critical patent/CA2519166A1/en
Application granted granted Critical
Publication of CA2519166C publication Critical patent/CA2519166C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
    • G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
    • G01R33/285—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR
    • G01R33/286—Invasive instruments, e.g. catheters or biopsy needles, specially adapted for tracking, guiding or visualization by NMR involving passive visualization of interventional instruments, i.e. making the instrument visible as part of the normal MR process
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/0009—Making of catheters or other medical or surgical tubes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3933—Liquid markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3954—Markers, e.g. radio-opaque or breast lesions markers magnetic, e.g. NMR or MRI
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1079—Balloon catheters with special features or adapted for special applications having radio-opaque markers in the region of the balloon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0127—Magnetic means; Magnetic markers

Abstract

A medical device includes a body, a member in the body, and a contrast agent in the member. The device can be visible by magnetic resonance imaging.

Claims (40)

1. A medical device, comprising:
a body;
a member within the body; and a contrast agent within the member, wherein the device is visible by magnetic resonance imaging.
2. The device of claim 1, wherein the device has a contrast to noise ratio greater than about 4 under magnetic resonance imaging.
3. The device of claim 1, wherein the contrast agent comprises a liquid.
4. The device of claim 1, wherein the contrast agent comprises a solid.
5. The device of claim 1, wherein the contrast agent comprises a T1 relaxation time shortening agent.
6. The device of claim 1, wherein the contrast agent comprises water and a chemical agent.
7. The device of claim 1, wherein the contrast agent comprises a heavy metal complex.
8. The device of claim 7, wherein the heavy metal complex comprises Gd-DTPA.
9. The device of claim 1, wherein the contrast agent comprises glycerin.
10. The device of claim 1, wherein the contrast agent comprises a T2 relaxation time shortening agent.
11. The device of claim 1, wherein the member has an aspect ratio greater than about one.
12. The device of claim 1, wherein the member is a hollow fiber.
13. The device of claim 1, wherein the member comprises a polymer material.
14. The device of claim 13, wherein the polymer material is selected from a group consisting of polypropylene, polyethylene, Nylon, polyethyleneterephthalate, and polyacetonitrile.
15. The device of claim 1, wherein the member comprises a metal.
16. The device of claim 1, comprising a plurality of crisscrossing members in the body.
17. The device of claim 1, further comprising a solid chemical agent encapsulated by the member.
18. The device of claim 17, wherein the solid chemical agent is radiopaque.
19. The device of claim 18, wherein the solid chemical agent comprises a material selected from a group consisting of gold, tantalum, barium, bismuth, and tungsten.
20. The device of claim 1, wherein the member extends helically about the body.
21. The device of claim 1, wherein the member is sealed.
22. The device of claim 1, wherein the device is a guidewire.
23. The device of claim 1, wherein the device is a vascular graft.
24. The device of claim 1, wherein the device is a stent-graft.
25. The device of claim 1, wherein the device is a stent.
26. The device of claim 1, wherein the device is a medical balloon.
27. The device of claim 1, wherein the device is a balloon catheter.
28. A medical tubing, comprising:
a hollow body;
a member within the body; and a contrast agent within the member, wherein the device is visible by magnetic resonance imaging.
29. The tubing of claim 28, wherein the member is sealed.
30. The tubing of claim 28, in the form of a medical catheter.
31. A method of making a medical device, the method comprising:
extruding a body comprising a polymer, and a member having a contrast agent within the member, wherein the device is visible by magnetic resonance imaging.
32. The device of claim 31, wherein the device has a contrast to noise ratio greater than about 4 under magnetic resonance imaging.
33. The method of claim 31, wherein the body is a tubular member.
34. The method of claim 31, wherein the contrast agent comprises a liquid.
35. The method of claim 31, wherein the contrast agent comprises a solid.
36. A method of making a medical device, the method comprising:
forming a mixture comprising a polymer, and a member having a contrast agent within the member; and forming the mixture into the medical device.
37. The method of claim 36, further comprising injecting the mixture into a mold.
38. The method of claim 36, further comprising extruding the mixture.
39. The method of claim 36, wherein the contrast agent comprises a liquid.
40. The method of claim 36, wherein the contrast agent comprises a solid.
CA2519166A 2003-03-17 2004-03-16 Medical devices Expired - Fee Related CA2519166C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/390,202 2003-03-17
US10/390,202 US7792568B2 (en) 2003-03-17 2003-03-17 MRI-visible medical devices
PCT/US2004/008137 WO2004082632A2 (en) 2003-03-17 2004-03-16 Medical devices comprising contrast agent and method of manufacturing

Publications (2)

Publication Number Publication Date
CA2519166A1 true CA2519166A1 (en) 2004-09-30
CA2519166C CA2519166C (en) 2012-02-07

Family

ID=32987489

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2519166A Expired - Fee Related CA2519166C (en) 2003-03-17 2004-03-16 Medical devices

Country Status (7)

Country Link
US (1) US7792568B2 (en)
EP (1) EP1603622B1 (en)
JP (1) JP4741470B2 (en)
AT (1) ATE470470T1 (en)
CA (1) CA2519166C (en)
DE (1) DE602004027605D1 (en)
WO (1) WO2004082632A2 (en)

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