Source: https://encrypted.google.com/patents/US9283094
Timestamp: 2018-03-17 06:31:55
Document Index: 290996780

Matched Legal Cases: ['application No. 10', 'Application No. 04725381', 'Application No. 04725381', 'Application No. 04725381', 'Application No. 04725381', 'Application No. 04725381', 'Application No. 04725381']

Patent US9283094 - Polymer-based stent assembly - Google Patents
Methods for preparing a polymer-based stent assembly comprising an inflatable balloon catheter and a polymer-based stent resistant to relaxation-related negative recoil are provided. The methods comprise heating a polymeric cylindrical device which is at a final predetermined shape and diameter to a...https://www.google.com/patents/US9283094?utm_source=gb-gplus-sharePatent US9283094 - Polymer-based stent assembly
Publication number US9283094 B2
Also published as CA2563023A1, CA2563023C, CN1960684A, CN1960684B, DE602004023237D1, EP1737387A1, EP1737387B1, US7731740, US20060058863, US20100204778, WO2005096992A1
Publication number 12764447, 764447, US 9283094 B2, US 9283094B2, US-B2-9283094, US9283094 B2, US9283094B2
Inventors Antoine Lafont, Serge Piranda, Patrick Sabaria, Tahmer Sharkawi, Michel Vert
Patent Citations (37), Non-Patent Citations (26), Classifications (11)
US 9283094 B2
1. A degradable and bioresorbable polymeric stent that is substantially resistant to relaxation-related negative recoil when expanded mechanically to a final predetermined diameter in a lumen of a tube, duct, or vessel of a mammalian subject, said polymeric stent being formed by the following steps:
(a) heating a polymeric stent, which is at the final predetermined diameter to a temperature sufficiently above the Tg of a polymeric material that forms said polymeric stent, for a time sufficient to erase memory of previous processing of said polymeric stent; and
wherein said polymeric stent has a wall defining a first open end, a second open end, and a channel connecting said first and second open ends;
wherein said polymeric stent is mounted on a solid support for maintaining said polymeric stent at the final predetermined diameter;
(b) rapidly cooling said polymeric stent at a temperature below the Tg of the polymeric material to quench said polymeric stent and provide a polymeric stent that lacks any former process-related memory and has a memory of the final predetermined diameter.
2. The polymeric stent of claim 1, further comprising the step of:
(c) forming slits, voids, or open spaces in the wall of said polymeric stent prior to step (a) or after step (b) to provide a polymeric stent that is substantially resistant to relaxation-related negative recoil when mechanically expanded to the final predetermined diameter by inflation of a balloon that has been inserted into said channel of said polymeric stent and implanted in the lumen of a tube, duct, or vessel of a mammalian subject or stored at 37° C. for 4 weeks or more.
3. The polymeric stent of claim 1, wherein said polymeric stent is prepared before it is mounted on a balloon catheter.
This application is a divisional application of and claims priority to U.S. patent application No. 10/508,739, filed on Dec. 30, 2004, titled “POLYMER-BASED STENT ASSEMBLY,” which in turn claims priority to International Patent Application No. PCT/EPO4/004133, filed Apr. 2, 2004, both of which are hereby incorporated by reference in their entirety.
1 Barbanti et al., "Effect of Salt Leaching on PCL and PLGA (50/50) Resorbable Scaffolds", Materials Research, vol. 11, No. 1, pp. 75-80 (2008).
2 Communication from European Application No. 04725381.0 dated Apr. 3, 2007.
3 Communication from European Application No. 04725381.0 dated Dec. 13, 2007.
4 Communication from European Application No. 04725381.0 dated Jun. 16, 2008.
5 Eberhart, et al., "Bioresorbable polymeric stents: current status and future promise", J. Biomater. Sci. Polymer Edn, vol. 14, No. 4, pp. 299-312 (2003).
6 Franco, et al., "Comparative Thermal Degradation Studies on Glycolide/Trimethylene Carbonate and Lactide/Trimethylene Carbonate Copolymers", J. of Applied Polymer Science, vol. 104, pp. 3539-3553 (2007).
7 International Search Report and Written Opinion from PCT/EP04/004133 dated Dec. 30, 2004.
8 LaFont, et al., "Restenosis After Experimental Angioplasty", Circulation Research, 76: 966-1002 (1995).
9 Lendlein, et al., "Biodegradable, Elastic Shape-Memory Polymers for Potential Biomedical Applications", Science, vol. 296 May 31, 2002, pp. 1673-1676.
10 Mark, J.E., ed., "Polymer Data Handbook," Oxford University Press, Inc., pp. 566-569; 627-633 (1999).
11 Notice of Allowance from U.S. Appl. No. 10/508,739 dated Jan. 27, 2010.
12 Odian, G., "Principles of Polymerization," Fourth Edition, Wiley-Interscience, p. 26 (2004).
13 Office action from U.S. Appl. No. 10/508,739 dated Dec. 13, 2007.
14 Office action from U.S. Appl. No. 10/508,739 dated Jul. 15, 2008.
15 Office action from U.S. Appl. No. 10/508,739 dated Mar. 26, 2009.
16 Response from European Application No. 04725381.0 dated Apr. 10, 2008.
17 Response from European Application No. 04725381.0 dated Dec. 9, 2008.
18 Response from European Application No. 04725381.0 dated Oct. 8, 2007.
19 Response from U.S. Appl. No. 10/508,739 dated Apr. 9, 2008.
20 Response from U.S. Appl. No. 10/508,739 dated Dec. 12, 2008.
21 Response from U.S. Appl. No. 10/508,739 dated Jun. 25, 2009.
22 Su, et al., "Expandable Bioresorbable Endovascular Stent. I. Fabrication and Properties", Annals of Biomedical Engineering, vol. 31, pp. 667-677, 2003.
23 Tsuji, et al., "Biodegradable Polymeric Stents", Curr. Interv. Cardiol. Rep., 3(1): 10-17 (2001).
24 Valimaa, et al., "Viscoelastic memory and self-expansion of self-reinforced bioabsorbable stents", Biomaterials, 23 (2002) 3575-3582.
25 Wache, et al., "Development of a polymer stent with shape memory effect as a drug delivery system", Journal of Materials Science: Materials in Medicine, 14 (2003) 109-112.
26 Zeltinger, et al., "Advances in the Development of Coronary Stents", Biomaterials Forum, (2004).
International Classification A61F2/82, A61F2/02, A61F2/95, A61F2/958, A61L31/06
Cooperative Classification A61F2/958, A61F2210/0004, A61F2002/9522, A61L31/06, A61F2/82, C08L67/04