<12) United States Patent (10) Patent No.: US 6,475,237 B2 Drasler et al. (45) Date of Patent: Nov. 5, 2002 (54) INTRAVASCULAR HINGE STENT 5,133,732 A 7/1992 Wiktor ...................... .. 604/96 5,192,307 A 3/1993 Wall ............................ .. 623/1 (76) Inventors: William J . Drasler, 4200 Dynasty Dr., 5,527,354 A 6/1996 Forltflirle Minnetonka, MN (US) 55345; Joseph 5545311 A 8/1996 An ~~~~~ ~~ M. Thielen, 3027 Cameron Ave. SE., 2 3271115 623/1 1311111119’ MN (US) 55515 5:607:467 A 3/1997 Froix .......................... .. 623/1 ( * ) Notice: Subject to any disclaimer, the term of this (List continued on next page.) patent is extended or adjusted under 35 U_S'C' 154(b) by 33 days. FOREIGN PATENT DOCUMENTS WO W098/58600 of 1998 ........... .. A61F/2/06 (22) Filedr Aug- 8, 2001 US 5,035,707, 7/1991, Gianturco (withdrawn) (65) P1101‘ P1111110?-111011 D313 Primary Examiner—Corrine McDermott
US 2002/0002400 A1 Jan. 3, 2002
Related U.S. Application Data
(63) Continuation of application No. 09/780,145, filed on Feb. 9, 2001, now Pat. No. 6,312,460, which is a continuation of application No. 09/304,310, filed on May 3, 1999, now Pat.
(51) Int. Cl.7 ................................................. .. A61F 2/06 (52) U.S. Cl. ..................... .. 623/1.15; 623/1.18; 623/1.2 (58) Field of Search ............................. .. 623/1.15, 1.16, 623/1.17, 1.18, 1.19, 1.2, 1.21, 1.22, 606/198, 191
(56) References Cited
U.S. PATENT DOCUMENTS
3,868,956 A 3/1975 Alfidi . . . . . . .. 128/1 4,503,569 A 3/1985 Dotter .. 3/1 4,580,568 A 4/1986 Gianturco 128/345 4,655,771 A 4/1987 Wallsten .. 3/1.4 4,733,665 A 3/1988 Palmaz .. 128/343.4 4,800,882 A 1/1989 Gianturco 128/303 4,856,516 A 8/1989 Hillstead .. 623/1 4,886,062 A 12/1989 Wiktor .. 128/325 5,041,126 A 8/1991 Gianturco 128/341 5,061,275 A 10/1991 Wallsten . 623/1 5,102,417 A 4/1992 Palmaz .. 128/343 5,116,365 A 5/1992 Hillstead . 623/1
Assistant Examiner—Hieu Phan
(57) ABSTRACT
The hinge stent is a balloon-expandable or self-expandable intravascular endoprosthesis used for treatment of vascular injury. The hinge stent is formed of a single stent section or of multiple stent sections joined together. Each stent section has a node and strut structure extending throughout in order to uncouple expansion forces of the stent to hold a blood vessel outward from crush forces that resist the formation of an oval shape during a crush deformation. Each node includes a hinge Which is joined via a transition region to a strut. The hinge can bend in the direction of a uniformly curved surface of the stent but not in the radial direction. The strut can bend in the radial direction but not in the uniformly curved surface of the stent. The Widths, lengths, and radial dimensions of the hinges and struts provide a balloonexpandable hinge stent that is non-crushable. For a selfexpandable stent the hinge and strut dimensions provide expansion forces that are controlled independently from crush forces. The hinge stent can be formed of a high modulus metal With expansion properties being determined by the hinge dimensions and crush properties being determined independently: by the design of the strut dimensions. The node and strut structure of the hinge stent provides for flexibility in traversing along tortuous passages.
25 Claims, 35 Drawing Sheets
Page 2 U.S. PATENT DOCUMENTS 5,800,526 A 9/1998 Anderson .................... .. 623/1 5,827,321 A 10/1998 Roubin .... .. 606/191 5,613,981 A 3/1997 Boyle ....................... .. 606/195 5827 322 A 10/1998 Williams 909/1 536303829 A 5/1997 Lautelliung 606/195 578337707 A 11/1998 McIntyre ............... .. 606/151.6 536453514 A 7/1997 C“"P6“‘6‘ 625/1 5,843,164 A 12/1998 Frantzen ...................... .. 623/1 5,649,952 A 7/1997 Lam ....... .. 606/108 6,241,760 B1 * 6/2001 Jang ........... .. 623/1.12 5,681,346 A 10/1997 onn .... .. 606/198 . 6,245,101 B1 * 6/2001 Drasleretal. 623/1.15 5,695,516 A 12/1997 Fischell 606/198 . 6,299,635 B1 * 10/2001 Frantzen ......... .. 623/1.17 5,697,971 A 12/1997 Fischell 623/1 6912 459 B1 ,4 442991 H 1 623 4 45 5,728,150 A 3/1998 McDonald . 623/1 3 3 4 “mg 6‘ 6" """""""""""" "" 4 " 5,733,330 A 3/1998 Cox ........ .. 623/1 5,776,161 A 7/1998 Globerman ............... .. 606/194 * cited by examiner
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