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US 10,946,120 B2Granted
Lubricious urinary catheters having varying flexibility
AssigneeHollister Incorporated
InventorHoracio Montes de Oca
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Abstract
A catheter having a shaft made from polyvinyl alcohol where in the shaft has a varying stiffness along the length of the shaft.
Claims14
A urinary catheter, comprising:
- a shaft consisting of polyvinyl alcohol and plasticizing agent, the shaft including a first section having a first stiffness and a second section having a second stiffness;
- wherein at least one of said sections is impregnated with the plasticizing agent, the plasticizing agent comprising propylene glycol.
A method of making a catheter of varying stiffness comprising:
- immersing a first section of a catheter consisting of polyvinyl alcohol in a first plasticizing agent;
- and
- immersing a second section of the catheter consisting of polyvinyl alcohol in a second plasticizing agent;
- wherein at least one of the first and second plasticizing agent comprises propylene glycol.
1 more element
Dependencies are inferred from the claim text.