US 12,226,592 B2
Catheter designs for enhanced column strength
Pedro D. Pedroso, Parkland, FL (US); and Chadwin Hanna, Raynham, MA (US)
Assigned to DePuy Synthes Products, Inc., Raynham, MA (US)
Filed by DePuy Synthes Products, Inc., Raynham, MA (US)
Filed on Oct. 19, 2023, as Appl. No. 18/381,758.
Application 18/381,758 is a continuation of application No. 17/114,725, filed on Dec. 8, 2020, granted, now 11,826,520.
Prior Publication US 2024/0042171 A1, Feb. 8, 2024
Int. Cl. A61M 25/00 (2006.01)
CPC A61M 25/0052 (2013.01) [A61M 25/0068 (2013.01); A61M 2205/0222 (2013.01); A61M 2210/12 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A catheter comprising:
a proximal end, a distal end, and a longitudinal axis;
an inner liner;
a braided wire support structure disposed around the inner liner;
a metallic tubular reinforcing layer disposed around the braided wire support structure, the metallic tubular reinforcing layer extending an intermediate distance from the proximal end and comprising one or more axial segments configured to give different stiffness properties to at least a portion of the catheter;
a transition feature between a proximal-most ribbon cut segment and a distal-most axial segment of the one or more axial segments comprising one or more axial holes in a first axial hole pattern, the transition feature comprising one or more transition holes in a second axial hole pattern located between the ribbon cuts; and
a plurality of outer polymer jackets disposed around the metallic tubular reinforcing layer, the plurality of outer polymer jackets bonding the metallic tubular reinforcing layer to the braided wire support structure;
at least one of the one or more axial segments of the metallic tubular reinforcing layer comprising one or more ribbon cut segments configured in a continuous longitudinally extending spiral around the longitudinal axis; and
another of the at least one of the one or more axial segments of the metallic tubular reinforcing layer comprising one or more axial hole patterns cut from the metallic tubular reinforcing layer.
 
13. A catheter for vascular access, the catheter comprising:
a proximal end, a distal end, and a longitudinal axis;
a braided wire support structure disposed around an inner liner, the support structure extending from the proximal end of the catheter to a point approximate the distal end;
a metallic tubular reinforcing layer disposed around the braided wire support structure, the metallic tubular reinforcing layer extending an intermediate distance from the proximal end, the metallic tubular reinforcing layer comprising a portion with one or more axial hole patterns cut from the layer having a gradient of varying hole density and a portion with one or more ribbon cut segments configured in a continuous longitudinally extending spiral around the longitudinal axis;
a transition feature between a proximal-most ribbon cut segment of the one or more ribbon cut segments and a distal-most end of the portion comprising one or more axial holes in a first axial hole pattern, the transition feature comprising one or more transition holes in a second axial hole pattern located between the ribbon cuts; and
one or more outer polymer jackets disposed around the metallic tubular reinforcing layer, at least one of the one or more outer polymer jackets comprising a durometer hardness different than the durometer hardness of an adjacent polymer jacket.