US 12,239,764 B2
Urinary catheters with improved shape recovery and ease of use
Brent H. Sellers, Libertyville, IL (US); Paul Healy, Claremorris (IE); William K. Arnold, Gurnee, IL (US); and Horacio Montes De Oca Balderas, Ballina (IE)
Assigned to Hollister Incorporated, Libertyville, IL (US)
Appl. No. 17/906,038
Filed by Hollister Incorporated, Libertyville, IL (US)
PCT Filed Mar. 11, 2021, PCT No. PCT/US2021/021821
§ 371(c)(1), (2) Date Sep. 9, 2022,
PCT Pub. No. WO2021/183718, PCT Pub. Date Sep. 16, 2021.
Claims priority of provisional application 62/989,277, filed on Mar. 13, 2020.
Prior Publication US 2023/0138293 A1, May 4, 2023
Int. Cl. A61M 25/00 (2006.01); A61L 2/08 (2006.01); A61L 2/26 (2006.01); A61L 29/06 (2006.01)
CPC A61L 29/06 (2013.01) [A61L 2/087 (2013.01); A61L 2/26 (2013.01); A61M 25/0009 (2013.01); A61M 25/002 (2013.01); A61L 2202/18 (2013.01); A61L 2202/24 (2013.01); A61L 2400/10 (2013.01); A61L 2400/16 (2013.01); A61M 2205/0222 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A catheter product comprising:
a package defining a cavity;
a catheter including a thermoplastic polyurethane polymer tubing contained within the cavity of the package, wherein at least a portion of the polymer tubing is in a substantially arcuate configuration within the cavity, the portion of the polymer tubing being defined between a proximal location on the polymer tubing and a distal location on the polymer tubing;
wherein a percent shape recovery of the portion of the polymer tubing after about 1 month at room temperature is at least 35%;
wherein the percent shape recovery of the portion of the polymer tubing is calculated by the formula:
percent shape recovery=[1−(L0−L2)/(L0−L1)]×100
where L0=length of the portion of the polymer tubing as measured from the proximal location to the distal location when in a straight configuration;
L1=the diameter of curvature of the portion of the polymer tubing when in the arcuate configuration within the cavity; and
L2=the distance between the proximal location and distal location of the portion of the polymer tubing after removal from the arcuate configuration;
wherein the storage modulus (E′) of the polymer tubing is greater than or equal to 19 MPa and less than or equal to 50 MPa and the loss modulus (E″) of the polymer tubing is greater than or equal to 2.8 MPa and less than or equal to 8.9 MPa.