US 12,318,564 B2
Catheter systems and methods for medical procedures using catheters
Adel M. Malek, Weston, MA (US); Carl Heilman, Wayland, MA (US); David A. Rezac, Westborough, MA (US); Jack Sattell, Boston, MA (US); and Alexander Bonin, Bellingham, MA (US)
Assigned to CereVasc, LLC, Charlestown, MA (US)
Filed by CereVasc, Inc., Auburndale, MA (US)
Filed on Jun. 9, 2023, as Appl. No. 18/207,843.
Application 18/207,843 is a continuation of application No. 16/489,624, granted, now 11,771,875, previously published as PCT/US2018/020667, filed on Mar. 2, 2018.
Application 16/489,624 is a continuation in part of application No. PCT/US2017/056227, filed on Oct. 11, 2017.
Claims priority of provisional application 62/473,729, filed on Mar. 20, 2017.
Claims priority of provisional application 62/466,272, filed on Mar. 2, 2017.
Prior Publication US 2024/0149026 A1, May 9, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 27/00 (2006.01); A61F 2/95 (2013.01); A61M 25/00 (2006.01)
CPC A61M 27/006 (2013.01) [A61M 25/0051 (2013.01); A61M 25/0053 (2013.01); A61M 25/0054 (2013.01); A61F 2002/9528 (2013.01); A61M 2025/0042 (2013.01); A61M 2025/0047 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A catheter device comprising:
a reinforcing member having a proximal end and a distal end and defining a central opening therebetween, the reinforcing member comprising:
a plurality of discrete longitudinally arranged sections disposed between the proximal end and the distal end and comprising, in order, a proximal section, a mid-transition section, a distal transition section, a distal section, and a distal structural region, wherein:
the proximal section is located at or near the proximal end and defines a first series of wall perforations at a first pitch that sets a first stiffness of the proximal section, wherein the first pitch does not vary within the proximal section;
the mid-transition section is located distally relative to the proximal section and defines a second series of wall perforations at a second pitch that sets a second stiffness of the mid-transition section that increases in stiffness from a distal-most end to a proximal-most end of the mid-transition section, wherein the second pitch varies from the distal-most end to the proximal-most end of the mid-transition section, and wherein the first stiffness of the proximal section is greater than the second stiffness of the mid-transition section;
the distal transition section is located distally relative to the mid-transition section and defines a third series of wall perforations at a third pitch that sets a third stiffness of the distal transition section, wherein the third stiffness increases in stiffness from a distal-most end to a proximal-most end of the distal transition section, wherein the third pitch varies from the distal-most end to the proximal-most end of the distal transition section, and wherein the second stiffness of the mid-transition section is greater than the third stiffness of the distal transition section;
the distal section is located distally relative to the distal transition section and defines a fourth series of wall perforations at a fourth pitch that sets a fourth stiffness of the distal section, wherein the fourth pitch does not vary within the distal section, wherein the third stiffness of the distal transition section is greater than the fourth stiffness of the distal section; and
a distal structural region substantially free of perforations and disposed distally relative to the distal section.