A medical device having a catheter and a fluid delivery conduit entirely disclosed within a portion of the catheter. The catheter may have a thermally transmissive region in fluid communication with the fluid delivery conduit and a rod disposed within at least a portion of the fluid delivery conduit. The medical device may control variable fluid flow with the ability to modify the effective cross-sectional area of the fluid delivery conduit available for fluid flow. Additional configurations provided herein may allow for the selective manipulation of a footprint or therapeutic pattern achievable with the medical device during a single procedure, negating the need for the removal and insertion of multiple devices to achieve the same variations in treatment geometry or characteristics.

A flexible, polymer sleeve is provided that is everted into a body passageway in such a manner as to exert minimal rubbing friction on the internal walls of such passageway. The sleeve is housed within a tube assembly comprising a posterior tube that telescopingly slides into an insertion tube. The sleeve everts over the insertion tube, upon forward pressure applied thereon, as it extends forward into a body passageway, and consequently, causes the posterior tube to retract into the insertion tube. Multiple tubes can be telescoped to support the polymer sleeve and to keep a passageway open for the expelling of urine or body fluids, the insertion of tools, sanitation/antibacterial substances, or for the flow of liquids through the sleeve. The insertion tube can be locked in reference to the sleeve to prevent unintended removal of catheter assembly. Sleeve and tubing are removed by reversing the insertion and eversion movements.

A catheter that includes an inner layer forming the inner surface of a tubular catheter main body having a lumen, an outer layer forming the outer surface of the catheter main body, and multiple reinforcements embedded between the inner surface and the outer surface. The inner diameter of the catheter main body is D1, the outer diameter is D2, the wall thickness is T1, a thickness of each reinforcement is T2, an effective width of each reinforcement is W, and a total number of the multiple reinforcements is N. The catheter satisfies Expressions (1), (2), and (3):
0.050 mm≤T1≤0.100 mm  Expression (1)
T2/T1≥0.25  Expression (2)
60,000≤(D1×D2×W×N)/(T1.sup.2×T2)<1,000,000  Expression (3).

In some examples, an implantable infusion device using a piezoelectric and/or electrostrictive mechanical pumping catheter includes a reservoir configured to retain for a fluid to be dispensed within a patient, at least one piezoelectric and/or electrostrictive mechanical pumping catheter for dispensing the fluid contained within the reservoir, a transceiver, and a processor to regulate control the operation of the piezoelectric and/or electrostrictive mechanical pumping catheter.

A single or multiple lumen catheter is disclosed which includes an expandable lumen. The expandable lumen is movable from a collapsed or sealed configuration to an open or expanded configuration. In the open configuration, the expandable lumen is dimensioned to receive a guidewire or stylet or facilitate the introduction of fluids into a patient.

A medical system includes an insertion device including a delivery shaft with an internal lumen, a coupling tube coupled to the delivery shaft and configured to receive a medical device, and a liner tube inserted through the internal lumen of the delivery shaft.

An oral medical apparatus includes a flexible tube with a first portion adjacent a proximal end of the tube and a second portion adjacent to the first portion. A support is located within the upper portion to prevent compression or collapse of the upper portion of the tube. The oral medical apparatus can accommodate a rigid connector that may be directly coupled to an anesthesia breathing circuit or a medical breathing device.

Disclosed herein is a catheter pump that includes an expandable cannula and an impeller system. The expandable cannula defines a blood flow channel and includes an impeller blade zone, an inlet zone, and an outlet zone. The catheter pump further includes an impeller system including an impeller body, the impeller system movable relative to the expandable cannula along a longitudinal axis of the catheter pump. The catheter pump is selectively transitionable between a separated configuration in which the impeller body is axially spaced from the expandable cannula along the longitudinal axis, and an operational configuration in which the impeller body is positioned within the impeller blade zone of the expandable cannula.

An oral medical apparatus includes a flexible tube with a first portion adjacent a proximal end of the tube and a second portion adjacent to the first portion. A support is located within the upper portion to prevent compression or collapse of the upper portion of the tube. The oral medical apparatus can accommodate a rigid connector that may be directly coupled to an anesthesia breathing circuit or a medical breathing device.

A urinary catheter drainage member (410), comprising: a body (417) having a proximal end, a distal end and a lumen extending therethrough, the proximal end being configured to be located at the distal end of a catheter such that the lumen of the body is in fluid communication with a drainage lumen of the catheter, the distal end of the body defining an opening for urine drainage; the body being configured to selectively restrict urine drainage from the opening