US20040211491A1 - Stent, method for processing stent, and method of stenting a patient - Google Patents
Stent, method for processing stent, and method of stenting a patient Download PDFInfo
- Publication number
- US20040211491A1 US20040211491A1 US10/851,931 US85193104A US2004211491A1 US 20040211491 A1 US20040211491 A1 US 20040211491A1 US 85193104 A US85193104 A US 85193104A US 2004211491 A1 US2004211491 A1 US 2004211491A1
- Authority
- US
- United States
- Prior art keywords
- stent
- nuclear spin
- artifacts
- spin tomography
- subject invention
- 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.)
- Abandoned
Links
- 238000000034 method Methods 0.000 title description 4
- 238000003325 tomography Methods 0.000 claims abstract description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 abstract description 7
- 208000037803 restenosis Diseases 0.000 abstract description 7
- 239000010936 titanium Substances 0.000 abstract description 6
- 229910052719 titanium Inorganic materials 0.000 abstract description 6
- 229910001069 Ti alloy Inorganic materials 0.000 abstract description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract description 4
- 238000003384 imaging method Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Inorganic materials [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
- 235000010333 potassium nitrate Nutrition 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003631 wet chemical etching Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L31/00—Materials for other surgical articles, e.g. stents, stent-grafts, shunts, surgical drapes, guide wires, materials for adhesion prevention, occluding devices, surgical gloves, tissue fixation devices
- A61L31/02—Inorganic materials
- A61L31/022—Metals or alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S148/00—Metal treatment
- Y10S148/051—Etching
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S623/00—Prosthesis, i.e. artificial body members, parts thereof, or aids and accessories therefor
- Y10S623/901—Method of manufacturing prosthetic device
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/4902—Electromagnet, transformer or inductor
- Y10T29/49021—Magnetic recording reproducing transducer [e.g., tape head, core, etc.]
- Y10T29/49032—Fabricating head structure or component thereof
- Y10T29/49034—Treating to affect magnetic properties
Definitions
- the subject invention relates to a stent which exhibits a low incidence of artifacts in nuclear spin tomography, and to a process for treating stents that are processed with tools containing magnetizing components such as iron.
- cardiovascular stents that are able to adequately prop open the vessel and that can be accurately positioned. It would be desirable to use stents that can be viewed with nuclear spin tomography.
- traditional stents are made of stainless steel and show distinct image distortions, or so called artifacts. These artifacts occur when materials with high magnetic susceptibility are used.
- the subject invention relates to a stent with respect to which the occurrence of artifacts in nuclear spin tomography can be reduced or avoided.
- the subject invention also pertains to the etching of stents, incorporating titanium and/or titanium alloys, that have been processed with tools containing magnetizing components.
- etching the stent in an etch solution that etches the magnetizing component materials of the tools can reduce the amount of the magnetizing component materials of the tools on the surface of the stent and, therefore, reduce the incidence of artifacts from the stent.
- the subject invention can also be useful for the control of in-stent-restenosis by allowing imaging under nuclear spin tomography to see in-stent-restenosis in the interior of the subject stent.
- the subject stent can incorporate an alloy of 3 percent aluminum by weight and 2.5 percent vanadium by weight, with the remainder being titanium, known as material TIAl3V2.5 or material No. 3.7194 or 253.7195 (ASTM Grade 9), where ASTM is the American Society for Testing and Materials.
- material TIAl3V2.5 also known as Ti3Al2.5V and ASTM Grade 9
- Table I TABLE I Content (weight %) C up to 0.08% N 2 up to 0.03% O 2 up to 0.15% V 2.0-3.0% Al 2.5-3.5% Fe up to 0.25% H 2 up to 0.015% Ti balance
- the subject stent can incorporate an alloy referred to as ASTM Grade 5 (also known as ISO 3.765 or 3.7165).
- ASTM Grade 9 is harder than an alloy according to ASTM Grade 5, which can have the following components: 90% titanium, 6% aluminum, and 4% vanadium.
- ASTM 5 the composition of titanium alloy known as ASTM 5 is shown in Table II. TABLE II Content (weight %) C up to 0.08% N 2 up to 0.05% O 2 up to 0.2% V 3.5-4.5% Al 5.5-6.75% Fe up to 0.4% H 2 up to 0.015% Ti balance
- the ASTM Grade 5 material is more flexible than the ASTM grade 9 material and is, therefore, more suitable for expanding a stent with the help of a balloon catheter.
- Stents incorporating materials that are made to be artifact free, that are created with tools containing magnetizing components typically show an increase in screen artifacts. This increase in artifacts is due to some amount of the tool material rubbing off the tool onto the stent during the processing of the stent with the tools.
- a reduction of surface magnetism of the stent can be achieved through dipping in etching solutions that etch the materials the tools are made of. The rub-off from the tools is eliminated by the wet chemical etching solution.
- such an etching solution that removes iron impurities can consist of, for example, 3 parts hydrochloric acid and 2 parts saltpeter acid. This etching solution can be further reduced with additional parts water in the etching process.
- Stents manufactured in accordance with the subject invention in the manner described herein, can be ideally observed in nuclear spin tomography units incorporating a magnetic flux density>1.0 Testa.
- unexpanded stent having a diameter of 1 mm was balloon expanded to a diameter of 4 mm, and it was possible to clearly see all the stent struts, or the so-called strats. It was also possible to get a good look inside the expanded stent.
- so-called in-stent-restenosis in the interior, or inner lumen, of the stent can be seen when a stent has been treated in accordance with the subject invention.
- the ability to see in-stent-restenosis in the interior of the stent can be useful for the control of in-stent-restenosis.
Abstract
The subject invention relates to a stent with respect to which the occurrence of artifacts in nuclear spin tomography can be reduced or avoided. The subject invention also pertains to the etching of stents, incorporating titanium and/or titanium alloys, that have been processed with tools containing magnetizing components. The subject invention can also be useful for the control of in-stent-restenosis by allowing imaging under nuclear spin tomography to see in-stent-restenosis in the interior of the subject stent.
Description
- This application is a divisional of U.S. patent application Ser. No. 10/091,988, filed Mar. 5, 2002, which claims the benefit of German Application Serial No. 20104145.6, filed Mar. 9, 2001.
- The subject invention relates to a stent which exhibits a low incidence of artifacts in nuclear spin tomography, and to a process for treating stents that are processed with tools containing magnetizing components such as iron.
- In today's stent technology it is desirable to use cardiovascular stents that are able to adequately prop open the vessel and that can be accurately positioned. It would be desirable to use stents that can be viewed with nuclear spin tomography. However, traditional stents are made of stainless steel and show distinct image distortions, or so called artifacts. These artifacts occur when materials with high magnetic susceptibility are used.
- The subject invention relates to a stent with respect to which the occurrence of artifacts in nuclear spin tomography can be reduced or avoided. The subject invention also pertains to the etching of stents, incorporating titanium and/or titanium alloys, that have been processed with tools containing magnetizing components. As processing the stents with tools containing magnetizing components can result in some amount of the tool material rubbing off the tools onto the stent, etching the stent in an etch solution that etches the magnetizing component materials of the tools can reduce the amount of the magnetizing component materials of the tools on the surface of the stent and, therefore, reduce the incidence of artifacts from the stent.
- The subject invention can also be useful for the control of in-stent-restenosis by allowing imaging under nuclear spin tomography to see in-stent-restenosis in the interior of the subject stent.
- In a specific embodiment, the subject stent can incorporate an alloy of 3 percent aluminum by weight and 2.5 percent vanadium by weight, with the remainder being titanium, known as material TIAl3V2.5 or material No. 3.7194 or 253.7195 (ASTM Grade 9), where ASTM is the American Society for Testing and Materials. As known in the art, the composition of titanium alloy TIAl3V2.5, also known as Ti3Al2.5V and ASTM Grade 9, is shown in Table I.
TABLE I Content (weight %) C up to 0.08% N2 up to 0.03% O2 up to 0.15% V 2.0-3.0% Al 2.5-3.5% Fe up to 0.25% H2 up to 0.015% Ti balance - The use of TIAl3V2.5 to produce this embodiment of the subject stent results in a stent that produces especially few image artifacts and has sufficient hardness to be suitable for interventional instruments used in nuclear spin tomography.
- In another specific embodiment, the subject stent can incorporate an alloy referred to as ASTM Grade 5 (also known as ISO 3.765 or 3.7165). The alloy according to ASTM Grade 9 is harder than an alloy according to ASTM Grade 5, which can have the following components: 90% titanium, 6% aluminum, and 4% vanadium. As known in the art, the composition of titanium alloy known as ASTM 5 is shown in Table II.
TABLE II Content (weight %) C up to 0.08% N2 up to 0.05% O2 up to 0.2% V 3.5-4.5% Al 5.5-6.75% Fe up to 0.4% H2 up to 0.015% Ti balance - The ASTM Grade 5 material is more flexible than the ASTM grade 9 material and is, therefore, more suitable for expanding a stent with the help of a balloon catheter.
- Stents, incorporating materials that are made to be artifact free, that are created with tools containing magnetizing components typically show an increase in screen artifacts. This increase in artifacts is due to some amount of the tool material rubbing off the tool onto the stent during the processing of the stent with the tools. A reduction of surface magnetism of the stent can be achieved through dipping in etching solutions that etch the materials the tools are made of. The rub-off from the tools is eliminated by the wet chemical etching solution. In a specific embodiment, such an etching solution, that removes iron impurities can consist of, for example, 3 parts hydrochloric acid and 2 parts saltpeter acid. This etching solution can be further reduced with additional parts water in the etching process.
- Stents manufactured in accordance with the subject invention, in the manner described herein, can be ideally observed in nuclear spin tomography units incorporating a magnetic flux density>1.0 Testa. In a specific embodiment, unexpanded stent having a diameter of 1 mm was balloon expanded to a diameter of 4 mm, and it was possible to clearly see all the stent struts, or the so-called strats. It was also possible to get a good look inside the expanded stent. Advantageously, so-called in-stent-restenosis in the interior, or inner lumen, of the stent can be seen when a stent has been treated in accordance with the subject invention. The ability to see in-stent-restenosis in the interior of the stent can be useful for the control of in-stent-restenosis.
Claims (11)
1-5. (canceled).
6. A stent, comprising:
TIAl3V2.5, wherein the TIAl3V2.5 exhibits a low incidence of artifacts in nuclear spin tomography.
7. The stent according to claim 1, wherein the stent consists essentially entirely of TIAl3V2.5.
8. The stent according to claim 1, wherein the stent is viewable in nuclear spin tomography.
9. The stent according to claim 1, wherein TIAl3V2.5 has the following composition by weight:
up to 0.08% C; up to 0.03% N2; up to 0.15% O2; 2.0% to 3.0% V; 2.5% to 3.5% Al; up to 0.25% Fe; less than 0.015% H2; and the balance Ti.
10. The stent according to claim 2, wherein TIAl3V2.5 has the following composition by weight:
up to 0.08% C; up to 0.03% N2; up to 0.15% O2; 2.0% to 3.0% V; 2.5% to 3.5% Al; up to 0.25% Fe; up to 0.015% H2; and the balance Ti.
11. A stent, comprising:
TIAl6V4, wherein the TIAl6V4 exhibits a low incidence of artifacts in nuclear spin tomography.
12. The stent according to claim 6 , wherein the stent is expandable with a balloon catheter.
13. The stent accrediting to claim 6 , wherein the stent consists essentially entirety of TIAl6V4.
14. The stent according to claim 6 , wherein the TIAl6V4 has the following composition by weight:
up to 0.08% C; up to 0.05% N2; up to 0.2% O2; 3.5% to 4.5% V; 5.5% to 6.75% Al; up to 0.4% Fe; up to 0.015% H2; and the balance Ti.
15. The stent according to claim 8 , wherein the TIAl6V4 has the following
up to 0.08% C; up to 0.05% N2; up to 0.2% O2; 3.5% to 4.5% V; 5.5% to 6.75% Al; up to 0.4% Fe; up to 0.015% H2; and the balance Ti.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/851,931 US20040211491A1 (en) | 2001-03-09 | 2004-05-21 | Stent, method for processing stent, and method of stenting a patient |
| US11/394,556 US20060276876A1 (en) | 2001-03-09 | 2006-03-31 | Stent, method for processing stent, and method of stenting a patient |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE20104145.6 | 2001-03-09 | ||
| DE20104145U DE20104145U1 (en) | 2001-03-09 | 2001-03-09 | Cardiovascular stent |
| US10/091,988 US6780338B2 (en) | 2001-03-09 | 2002-03-05 | Method for processing a stent processed with tools containing magnetizing components |
| US10/851,931 US20040211491A1 (en) | 2001-03-09 | 2004-05-21 | Stent, method for processing stent, and method of stenting a patient |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/091,988 Division US6780338B2 (en) | 2001-03-09 | 2002-03-05 | Method for processing a stent processed with tools containing magnetizing components |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/394,556 Division US20060276876A1 (en) | 2001-03-09 | 2006-03-31 | Stent, method for processing stent, and method of stenting a patient |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US20040211491A1 true US20040211491A1 (en) | 2004-10-28 |
Family
ID=7954090
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/091,988 Expired - Lifetime US6780338B2 (en) | 2001-03-09 | 2002-03-05 | Method for processing a stent processed with tools containing magnetizing components |
| US10/851,931 Abandoned US20040211491A1 (en) | 2001-03-09 | 2004-05-21 | Stent, method for processing stent, and method of stenting a patient |
| US11/394,556 Abandoned US20060276876A1 (en) | 2001-03-09 | 2006-03-31 | Stent, method for processing stent, and method of stenting a patient |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US10/091,988 Expired - Lifetime US6780338B2 (en) | 2001-03-09 | 2002-03-05 | Method for processing a stent processed with tools containing magnetizing components |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11/394,556 Abandoned US20060276876A1 (en) | 2001-03-09 | 2006-03-31 | Stent, method for processing stent, and method of stenting a patient |
Country Status (2)
| Country | Link |
|---|---|
| US (3) | US6780338B2 (en) |
| DE (1) | DE20104145U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008036076A (en) * | 2006-08-04 | 2008-02-21 | Japan Health Science Foundation | Balloon-expandable stent and its production method |
| US20080103543A1 (en) * | 2006-10-31 | 2008-05-01 | Medtronic, Inc. | Implantable medical device with titanium alloy housing |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006036786A2 (en) * | 2004-09-27 | 2006-04-06 | Cook Incorporated | Mri compatible metal devices |
| US20080249607A1 (en) * | 2005-09-20 | 2008-10-09 | Thomas Jay Webster | Biocompatable Nanophase Materials |
| US8380311B2 (en) * | 2006-10-31 | 2013-02-19 | Medtronic, Inc. | Housing for implantable medical device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5895401A (en) * | 1995-08-24 | 1999-04-20 | Daum Gmbh | Controlled-artifact magnetic resonance instruments |
| US6010445A (en) * | 1997-09-11 | 2000-01-04 | Implant Sciences Corporation | Radioactive medical device and process |
| US6183508B1 (en) * | 1996-02-08 | 2001-02-06 | Schneider Inc | Method for treating a vessel with a titanium alloy stent |
| US6183409B1 (en) * | 1998-02-10 | 2001-02-06 | Implant Sciences Corporation | Soft x-ray emitting radioactive stent |
| US6258182B1 (en) * | 1998-03-05 | 2001-07-10 | Memry Corporation | Pseudoelastic β titanium alloy and uses therefor |
| US6325824B2 (en) * | 1998-07-22 | 2001-12-04 | Advanced Cardiovascular Systems, Inc. | Crush resistant stent |
| US6527938B2 (en) * | 2001-06-21 | 2003-03-04 | Syntheon, Llc | Method for microporous surface modification of implantable metallic medical articles |
| US6551341B2 (en) * | 2001-06-14 | 2003-04-22 | Advanced Cardiovascular Systems, Inc. | Devices configured from strain hardened Ni Ti tubing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5733326A (en) * | 1996-05-28 | 1998-03-31 | Cordis Corporation | Composite material endoprosthesis |
-
2001
- 2001-03-09 DE DE20104145U patent/DE20104145U1/en not_active Expired - Lifetime
-
2002
- 2002-03-05 US US10/091,988 patent/US6780338B2/en not_active Expired - Lifetime
-
2004
- 2004-05-21 US US10/851,931 patent/US20040211491A1/en not_active Abandoned
-
2006
- 2006-03-31 US US11/394,556 patent/US20060276876A1/en not_active Abandoned
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5895401A (en) * | 1995-08-24 | 1999-04-20 | Daum Gmbh | Controlled-artifact magnetic resonance instruments |
| US6183508B1 (en) * | 1996-02-08 | 2001-02-06 | Schneider Inc | Method for treating a vessel with a titanium alloy stent |
| US6010445A (en) * | 1997-09-11 | 2000-01-04 | Implant Sciences Corporation | Radioactive medical device and process |
| US6183409B1 (en) * | 1998-02-10 | 2001-02-06 | Implant Sciences Corporation | Soft x-ray emitting radioactive stent |
| US6258182B1 (en) * | 1998-03-05 | 2001-07-10 | Memry Corporation | Pseudoelastic β titanium alloy and uses therefor |
| US6325824B2 (en) * | 1998-07-22 | 2001-12-04 | Advanced Cardiovascular Systems, Inc. | Crush resistant stent |
| US6551341B2 (en) * | 2001-06-14 | 2003-04-22 | Advanced Cardiovascular Systems, Inc. | Devices configured from strain hardened Ni Ti tubing |
| US6527938B2 (en) * | 2001-06-21 | 2003-03-04 | Syntheon, Llc | Method for microporous surface modification of implantable metallic medical articles |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008036076A (en) * | 2006-08-04 | 2008-02-21 | Japan Health Science Foundation | Balloon-expandable stent and its production method |
| US20080103543A1 (en) * | 2006-10-31 | 2008-05-01 | Medtronic, Inc. | Implantable medical device with titanium alloy housing |
Also Published As
| Publication number | Publication date |
|---|---|
| US20060276876A1 (en) | 2006-12-07 |
| DE20104145U1 (en) | 2002-10-31 |
| US20030078675A1 (en) | 2003-04-24 |
| US6780338B2 (en) | 2004-08-24 |
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Owner name: MRI DEVICES DAUM GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DAUM, WOLFGANG;REEL/FRAME:016588/0847 Effective date: 20020317 Owner name: INVIVO GERMANY GMBH, GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:MRI DEVICES DAUM GMBH;REEL/FRAME:016589/0048 Effective date: 20050713 |
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Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |