Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The methods may include delivering a first fluid out of one or more needles, and delivering a secondary fluid (which may be the same type of fluid as the first fluid, or a different type of fluid) from the device without delivering the secondary fluid through a needle.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The devices may include one or both of one or more spine securing members or one or more needle alignment members.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The devices may include one or both of one or more spine securing members or one or more needle alignment members.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The devices may include one or both of one or more spine securing members or one or more needle alignment members.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The devices may include one or both of one or more spine securing members or one or more needle alignment members.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The methods may include delivering a first fluid out of one or more needles, and delivering a secondary fluid (which may be the same type of fluid as the first fluid, or a different type of fluid) from the device without delivering the secondary fluid through a needle.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The methods may include delivering a first fluid out of one or more needles, and delivering a secondary fluid (which may be the same type of fluid as the first fluid, or a different type of fluid) from the device without delivering the secondary fluid through a needle.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The methods may include delivering a first fluid out of one or more needles, and delivering a secondary fluid (which may be the same type of fluid as the first fluid, or a different type of fluid) from the device without delivering the secondary fluid through a needle.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may optionally include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall. The methods may include delivering a first fluid out of one or more needles, and delivering a secondary fluid (which may be the same type of fluid as the first fluid, or a different type of fluid) from the device without delivering the secondary fluid through a needle.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall.

Abstract: Medical devices and methods for delivering fluid. The medical devices include one or more needles for delivering fluid. The methods may include expanding an expandable member such as an inflatable member to expand an expandable scaffold outward toward a lumen wall.

Abstract: A dilatation catheter is described wherein a plurality of oblong perfusion ports are provided in the catheter shaft to provide perfusion flow of blood through the distal section of the catheter. Oblong perfusion ports are preferably provided both proximal and distal to the inflatable dilatation balloon. Orienting the long dimensions of the oblong perfusion ports at an angle from the longitudinal axis of the catheter shaft minimizes kinking of the catheter shaft when passing through tortuous passageways.

Abstract: A balloon dilatation catheter having heating elements raise the temperature of the working surface of the balloon while the balloon is being inflated during an angioplasty procedure. In one embodiment, the balloon is provided with a thin electrically conductive layer in heat transfer relationship therewith preferably on the interior surface of the balloon. Electrical power at radio frequencies is preferred and a coaxial cable is employed to deliver such power to a conductive layer for heating the balloon. In another embodiment, the ballon itself is formed of electrically conductive material. A perfusion lumen may be provided through the balloon with one or more proximal inlet ports and one or more distal discharge ports in fluid communication with the lumen to allow blood to pass through the balloon when it is inflated during angioplasty procedures. This faciltiates the flow of oxygenated blood distally of the catheter when the balloon is inflated thus allowing for extended balloon inflations, e.g.

Abstract: A balloon dilatation catheter having means to raise the temperature of the working surface of the balloon while the balloon is being inflated during an angioplasty procedure. In one embodiment, the balloon is provided with a thin electrically conductive layer in heat transfer relationship therewith preferably on the interior surface of the balloon. Electrical power at radio frequencies is preferred and a coaxial cable is employed to deliver such power to a conductive layer for heating the balloon. In another embodiment, the balloon itself is formed of electrically conductive material. A perfusion lumen may be provided through the balloon with one or more proximal inlet ports and one or more distal discharge ports in fluid communication with the lumen to allow blood to pass through the balloon when it is inflated during angioplasty procedures. This facilitates the flow of oxygenated blood distally of the catheter when the balloon is inflated thus allowing for extended balloon inflations, e.g.