Disclosed are embodiments for catheters and catheter liners including grooves on the inner surface of the liner. The grooves may improve the flexibility of the catheter while retaining a good stiffness profile. Also disclosed are methods for introducing the grooves on the inner surface of the liner.

A cannula assembly includes a cannula, polymeric support material and a hub. The cannula has a proximal end and a distal end. The polymeric support material substantially surrounds a portion of the cannula at or near the proximal end. The hub is configured to be attached to a syringe. The polymeric support material is located between the cannula and the hub. The cannula, the polymeric support material and the hub are adhesively attached.

A heating apparatus includes a heating element which converts electrical power to heat energy, a heatable element having a first surface and a second surface, and a dielectric laminate layer between the heating element and the first surface of the heatable element, wherein the dielectric laminate layer is thermally conductive to transfer heat energy from the heating element to the heatable element, and wherein the second surface of the heatable element is configured heat a liquid in a container.

An intermittent catheter that has a hollow polymeric tubular body comprising a polymer that is negatively charged or that becomes negatively charged when wetted with an aqueous medium having a pH greater than 2, said polymer being a derivative of at least one polyolefin material and/or at least one thermoplastic elastomeric material.

A catheter with a filter that is configured for use in treating vascular abnormalities. The filter element is configured to capture emboli within a patient's blood vessel and is expandable from a collapsed configuration and can have a stretchable proximal portion to accommodate insertion of an endovascular treatment device. The catheter is configured for radial expansion to thereby facilitate insertion of an endovascular treatment device into the catheter lumen, whereby the catheter is reconfigured from a normal configuration, in which the main lumen defines a first dimension, into an expanded configuration, in which the main lumen defines a second dimension larger than the first dimension.

A heating apparatus includes a heating element which converts electrical power to heat energy, a heatable element having a first surface and a second surface, and a dielectric laminate layer between the heating element and the first surface of the heatable element, wherein the dielectric laminate layer is thermally conductive to transfer heat energy from the heating element to the heatable element, and wherein the second surface of the heatable element is configured heat a liquid in a container.

An exhaust assembly, a frame assembly, a cushion assembly and a patient interface device are provided. The patient interface device includes: a cushion assembly including a nasal cushion to be in contact with a face of a patient, the nasal cushion is configured to be adaptively fitted around nostrils of the patient in response to the patient interface device being worn by the patient, and the nasal cushion is configured to, when being pressed against the basis nasi of the patient due to a pressurized gas to seal, apply no clamping effect on the ala nasi of the patient; a frame assembly with two sides being connected to the nasal cushion and a vent pipe, respectively; and a head strap connected to the frame, the head strap is configured to be fixed around the head of the patient in response to the patient interface device being worn by the patient.

A seal-forming structure for a patient interface includes a seal-forming region formed from a cushion material, wherein the cushion material has a patient-facing elastomeric nonwoven material.

A nano-scale device and method of manufacturing and use. The nano-scale device may be used in-vivo and may comprise a fluid path with an inlet microchannel, an outlet microchannel, and a nanochannel. The fluid path comprises a bio-robust material. In certain embodiments, the bio-robust material may be coated over a material that is not bio-robust.

An expandable introducer device includes an introducer hub and an introducer sheath coupled to the hub and extending distally therefrom. The introducer sheath includes a mesh tube, a liner disposed within the mesh tube, and an axial strip disposed between the mesh tube and the liner. The introducer sheath is radially-expandable from a first diameter to a second diameter larger than the first diameter in response to a device being advanced through the introducer sheath.