Balloon catheter shaft having high strength and flexibility
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A61M-025/00
B29C-047/00
B29C-055/26
A61M-025/10
B29C-049/00
B29D-023/00
A61M-025/01
B29C-049/04
B29C-049/08
B29C-049/18
B29C-049/64
B29C-065/02
B29C-065/00
B29K-105/00
B29L-031/00
출원번호
US-0230581
(2014-03-31)
등록번호
US-9205223
(2015-12-08)
발명자
/ 주소
Wilson, Bruce M.
Durcan, Jonathan P.
Simpson, John A.
출원인 / 주소
ABBOTT CARDIOVASCULAR SYSTEMS INC
대리인 / 주소
Baker Botts L.L.P.
인용정보
피인용 횟수 :
3인용 특허 :
217
초록▼
Balloon catheter comprises an elongated shaft having a proximal end and a distal end, the elongated shaft including a biaxially oriented nonporous thermoplastic polymer tubular member having a Shore durometer hardness of less than about 75D with an inflation lumen defined therein. The balloon cathet
Balloon catheter comprises an elongated shaft having a proximal end and a distal end, the elongated shaft including a biaxially oriented nonporous thermoplastic polymer tubular member having a Shore durometer hardness of less than about 75D with an inflation lumen defined therein. The balloon catheter also comprises a balloon sealing secured proximate the distal end of the shaft and having an interior in fluid communication with the inflation lumen.
대표청구항▼
1. An elongated shaft for a catheter, comprising a tubular member consisting essentially of biaxially oriented nonporous thermoplastic polymer having a Shore durometer hardness of less than about 75 D and greater than or equal to 63 D. 2. The elongated shaft for a catheter of claim 1, wherein the bi
1. An elongated shaft for a catheter, comprising a tubular member consisting essentially of biaxially oriented nonporous thermoplastic polymer having a Shore durometer hardness of less than about 75 D and greater than or equal to 63 D. 2. The elongated shaft for a catheter of claim 1, wherein the biaxially oriented nonporous thermoplastic polymer has a Shore durometer hardness of about 63 D. 3. The elongated shaft for a catheter of claim 1, wherein the biaxially oriented nonporous thermoplastic polymer is a polyether block amide. 4. The elongated shall for a catheter of claim 1, wherein the tubular member has a first outer diameter of about 0.0325 to about 0.0335 inches and a first inner diameter of about 0.028 to about 0.029 inches. 5. The elongated shaft for a catheter of claim 1, wherein the tubular member has a Gurley bending stiffness of less than about 150 mg. 6. The elongated shall for a catheter of claim 1, wherein the tubular member has a tensile strength of at least about 1 to about 5 lbf. 7. The elongated shall for a catheter of claim 1, wherein the tubular member has a maximum blow-up-ratio and the tubular member is at least 80% of the maximum blow-up-ratio. 8. The elongated shaft for a catheter of claim 1, wherein the tubular member has a substantially uniform outer diameter along an entire length of the tubular member. 9. The elongated shaft for a catheter of claim 1, wherein the biaxial orientation of the nonporous thermoplastic polymer of the tubular member is substantially uniform along an entire length of the tubular member. 10. The elongated shaft for a catheter of claim 1, wherein the tubular member has a rupture pressure of at least about 20 to about 50 atm. 11. An elongated shaft for a catheter prepared by a process comprising: melt-extruding thermoplastic polymeric material having a Shore durometer hardness of less than about 75 D and greater than or equal to 63 D at an elevated temperature into an extruded tube having a first outer diameter, a first inner diameter, and a tube lumen defined therein, and cooling the extruded tube to a temperature less than the elevated temperature of the melt-extrusion;placing the extruded tube within a capture member and biaxially orienting the polymeric material of the extruded tube by radially expanding the extruded tube with pressurized media in the tube lumen and axially expanding the extruded tube with a load applied on at least one end of the tube; andcooling the biaxially-oriented expanded tube to room temperature to form a tubular member. 12. The elongated shaft for a catheter of claim 11, wherein the extruded tube is heated to an expansion elevated temperature with a heating nozzle traversing along a length of the extruded tube. 13. The elongated shalt for a catheter of claim 11, wherein the capture member comprises a metallic tube having a lubricious polymeric inner liner, and the pressurized media is a gas at an elevated pressure sufficient to radially expand the extruded tube into contact with an inner surface of the capture member without increasing an outer diameter of the capture member. 14. The elongated shaft for a catheter of claim 13, wherein the capture member has a uniform inner diameter configured to radially restrain the expanding extruded tube at a second outer diameter, such that the second outer diameter is uniform along the length of the expanded tube. 15. The elongated shaft for a catheter of claim 11, wherein the extruded tube is cooled to room temperature after extrusion and before the radial and axial expansion of the extruded tube. 16. The elongated shaft for a catheter of claim 11, including heat stabilizing the extruded tube before cooling by heating the extruded tube to a heat stabilizing temperature sufficient to stabilize the polymeric material of the extruded tube. 17. The elongated shaft for a catheter of claim 16, wherein the extruded tube is heat stabilized on a mandrel. 18. The elongated shaft for a catheter of claim 16, wherein the polymeric material is a polyether block amide, and the heat stabilization comprises heating the expanded tube at about 100 to about 140° C., for about 10 to about 15 minutes. 19. The elongated shaft for a catheter of claim 11, wherein the tubular member is extruded to the first outer diameter of about 0.021 to about 0.023 inches, and the first inner diameter of about 0.004 to about 0.006 inches. 20. The elongated shaft for a catheter of claim 11, wherein the tubular member has a Gurley bending stiffness of not greater than about 50 to about 150 mg, a rupture pressure of at least about 20 to about 50 atm, and a tensile strength of at least about 1 to about 5 lbf. 21. The elongated shaft for a catheter of claim 11, wherein the thermoplastic polymeric material has a Shore durometer hardness of about 63 D. 22. The elongated shaft for a catheter of claim 11, wherein the extruded tube has a maximum blow-up-ratio and the extruded tube is radially expanded to at least 80% of the maximum blow-up-ratio. 23. The elongated shall for a catheter of claim 11, wherein the extruded tube is radially expanded such that the expanded tube has a second inner diameter which is at least about 5 times greater than the first inner diameter of the extruded tube. 24. The elongated shall for a catheter of claim 11, wherein the extruded tube is simultaneously radially and axially expanded. 25. The elongated shaft for a catheter of claim 11, wherein the extruded tube is sequentially radially and axially expanded.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (217)
Wilson James C., Angiography catheter with sections having different mechanical properties.
Andreas Bernard H. (Fremont CA) Glynn Brian A. (Sunnyvale CA) Evans Michael A. (Palo Alto CA) Farley Brian E. (Los Altos CA), Atherectomy catheter having flexible nose cone.
Simpson, John A.; Delgado, Jessie; Wilson, Bruce; Barbod, Lenny; Torres, Ramon; Brown, Devon; Ritchie, Quan; Chin, William S., Balloon catheter having a shaft with a variable stiffness inner tubular member.
Sogard David J. (Edina MN) Hendrickson Gary L. (New Hope MN) Wang Lixiao (St. Paul MN) Keith Pete T. (Fridley MN), Balloon catheter having nonlinear compliance curve and method of using.
Simpson, John A.; Durcan, Jonathan P.; Wilson, Bruce M., Balloon catheter tapered shaft having high strength and flexibility and method of making same.
Rosenbluth Robert F. (24161 Cherry Hills Pl. Laguna Niguel CA 92677) Lenker Jay A. (996 Coast View Dr. Laguna Beach CA 92651) Greene George R. (3108 Sumatra Pl. Costa Mesa CA 92626) Calvarese Barry M, Balloon dilation catheter.
Peters Jeffrey J. (Golden Valley MN) Ren Brooke Q. (Brooklyn Park MN) Larson Christopher R. (St. Paul MN), Balloon dilation catheter with improved pushability, trackability and crossability.
Fugoso Mauricio L. ; Rowean Karen M. ; Fourmont Michelle E. ; Brahana Christopher Todd ; Schwab Sharon Ma ; Minas Maritess E., Balloonattachment at catheter tip.
Arana, Ramon; Brown, Daniel; Novak, Curt A.; Mann, Justin K.; Simpson, John A.; Wilson, Bruce M.; Barbod, Leonard D., Catheter having transitioning shaft segments.
Arana, Ramon; Brown, Daniel; Novak, Curt A.; Mann, Justin K.; Simpson, John A.; Wilson, Bruce M.; Barbod, Leonard D., Catheter having transitioning shaft segments.
Sirhan Motasim M. ; Fernando ; Sr. Jovito L. ; Thornton Troy L. ; Campbell Patrick K. ; Williams Eric ; Wasicek Lawrence D., Catheter shaft with an oblong transverse cross-section.
Wang James C. (Norton) Roberts George R. (Arlington) Pederson ; Sr. Brian A. (So. Attleboro MA), Co-extruded medical balloons and catheter using such balloons.
Donald G. Wallace ; George H. Chu ; Jacqueline Anne Schroeder, Compositions and systems for forming high strength medical sealants, and associated methods of preparation and use.
Ferrera, David A.; Sahatjian, Ronald a.; Campbell, Andrew J.; Michaels, George C., Dilatation catheter balloon made from PEN based homopolymer or random copolymer.
David A. Ferrera ; Ronald a. Sahatjian ; Andrew J. Campbell ; George C. Michaels, Dilatation catheter balloon made from pen based homopolymer or random copolymer.
Valley Kirsten L. ; Snow David W. ; Corvi Timothy C. ; Donlon Brian S. ; Boyd Stephen W. ; Fan Sylvia W. ; Roth Alex T. ; Peters William S. ; Mueller ; Jr. Richard J. ; Gifford ; III Hanson S., Endovascular system for arresting the heart.
Valley, Kirsten L.; Snow, David W.; Corvi, Timothy C.; Donlon, Brian S.; Boyd, Stephen W.; Fan, Sylvia W.; Roth, Alex T.; Peters, William S.; Mueller, Jr., Richard J.; Gifford, III, Hanson S., Endovascular system for arresting the heart.
Peters Jeffrey J. (Golden Valley MN) Vidlund Robert M. (Eden Prairie MN) Arney Michelle (Menlo Park CA), Innerless dilatation catheter with balloon stretch or manual valve.
Ainsworth Robert D. (Scotts Valley CA) Cheng Tai C. (Mountain View CA) Wasicek Lawrence D. (Sunnyvale CA), Intraluminal catheter with high strength proximal shaft.
Atkinson Robert (New Brighton MN) Keith Peter (Fridley MN) Ellis Louis G. (St. Anthony MN) Schmaltz Dale (St. Paul MN) Robinson David (Channassen MN), Intravascular catheter and method for use thereof.
Wang,Lixiao; Chen,John Jianhua; Lindquist,Jeffrey S.; Lee,Nao Pao; Devens,Douglas A., Medical device balloons with improved strength properties and processes for producing same.
Rosen Gerald M. ; Herzog ; Jr. William R. ; Pou Sovitj, Medical device with a surface adapted for exposure to a blood stream which is coated with a polymer containing a nitrosy.
Chin, Albert C. C.; Chen, John Jianhua; Wang, Yiqun; Lodin, David W.; Wang, Lixiao; Sahatjian, Ronald A.; Guler, Ismail; Burgmeier, Robert, Multilayer medical device.
Chen, Ziyun; Cheng, Tai; Muni, Ketan; Patel, Udayan; Saltman, Robert, Polymer blends for use in making medical devices including catheters and balloons for dilatation catheters.
Hostettler Fritz ; Rhum David ; Forman Michael R. ; Helmus Michael N. ; Ding Ni, Process for the preparation of slippery, tenaciously adhering, hydrophilic polyurethane hydrogel coatings, coated polymer and metal substrate materials, and coated medical devices.
Machold Timothy R. (Moss Beach CA) Mar Craig E. (Fremont CA) Mueller ; Jr. Richard L. (Mountain View CA) Shanahan John P. (San Jose CA), Vascular catheters.
Wheeler ; deceased Robert G. (late of Greenbank WA by Helen Wheeler ; legal representative) Hawley William D. (Angier NC), “Stress-softened elastometeric films, articles, and method and apparatus for making such films and articles.
Arana, Ramon; Brown, Daniel; Novak, Curt A.; Mann, Justin K.; Simpson, John A.; Wilson, Bruce M.; Barbod, Leonard D., Catheter having transitioning shaft segments.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.