β-titanium alloy wire, method for its production and medical instruments made by said β-titanium alloy wire
First Claim
Patent Images
1. β
- -titanium alloy wire comprising a diameter of 0.01 to 2.0 mm is characterized in that an average crystal grain area A of β
-phase in cross section structure is 1 to 80 μ
m2, an average crystal grain length L of β
-phase in vertical section structure is 10 to 1000 μ
m and a ratio of L/{square root over ( )}A is 5 to 1000.
1 Assignment
0 Petitions
Accused Products
Abstract
The diamter of β-titanium alloy wire is reduced by cold wire-drawing and the β-titanium alloy wire is subjected to heat treatment. The heat treatment comprises the first aging process for precipitation strengthening and the second aging process for removing processing strain. β-titanium alloy wire is heat-treated under the supply of tension at the second aging process.
75 Citations
4 Claims
-
1. β
- -titanium alloy wire comprising a diameter of 0.01 to 2.0 mm is characterized in that an average crystal grain area A of β
-phase in cross section structure is 1 to 80 μ
m2, an average crystal grain length L of β
-phase in vertical section structure is 10 to 1000 μ
m and a ratio of L/{square root over ( )}A is 5 to 1000.
- -titanium alloy wire comprising a diameter of 0.01 to 2.0 mm is characterized in that an average crystal grain area A of β
-
2. A guide wire for medical treatment comprising β
- -titanium alloy wire that an average crystal grain area A of β
-phase in cross section structure is 1 to 80 μ
m2, an average crystal grain length L of β
-phase in vertical section structure is 10 to 1000 μ
m and a ratio of L/{square root over ( )}A is 5 to 1000.
- -titanium alloy wire that an average crystal grain area A of β
-
3. A catheter comprising β
- -titanium alloy wire that an average crystal grain area A of β
-phase in cross section structure is 1 to 80 μ
m2, an average crystal grain length L of β
-phase in vertical section structure is 10 to 100 μ
m and a ratio of L/{square root over ( )}A is 5 to 1000.
- -titanium alloy wire that an average crystal grain area A of β
-
4. A stent comprising β
- -titanium alloy wire that an average crystal grain area A of β
-phase in cross section structure is 1 to 80 μ
m2, an average crystal grain length L of β
-phase in vertical section structure is 10 to 1000 μ
m and a ratio of L/{square root over ( )}A is 5 to 1000.
- -titanium alloy wire that an average crystal grain area A of β
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeTokusen Kogyo Co., Ltd. (Kanai Juyo Kogyo Co., Ltd.), Terumo Corporation
-
Original AssigneeTerumo Corporation
-
InventorsSumimoto, Shin, Nagao, Ichiro, Ishii, Naoki, Yamamoto, Hideki, Kaneko, Takashi
-
Primary Examiner(s)Sheehan, John
-
Assistant Examiner(s)Oltmans, Andrew L.
-
Application NumberUS09/655,949Time in Patent Office643 DaysField of Search148/421, 420/417, 420/418, 420/419, 420/420, 420/421, 623/1.15, 623/1.18, 604/102.01, 604/523, 604/530US Class Current148/421CPC Class CodesA61L 29/02 Inorganic materialsA61L 31/022 Metals or alloysB21C 1/003 Drawing materials of specia...B21C 1/12 Regulating or controlling s...B21C 37/042 Manufacture of coated wire ...B21C 37/045 Manufacture of wire or bars...B21F 45/008 of medical instruments, e.g...B32B 15/017 one layer being formed of a...C22F 1/183 of titanium or alloys based...
