Abstract:
Medical devices and methods of making the devices are described. In some embodiments, the devices include multiple layers (24, 26, 28), and one or more layers (24) can include a nanocomposite material.
Abstract:
Catheters having an overmolded hub are disclosed. The overmolded catheter hubs may include one or more access hubs that are overmolded with an overmold material. The catheter hub may also be formed as a single piece from the overmold material. The overmolded construction can result in a stronger bond between the catheter body and the hub and can provide for access hubs having sufficient clarity for the observation of air bubbles in a contained fluid. The disclosed catheter hubs may also demonstrate improved balloon deflation rates when utilized with a catheter body having a distal balloon.
Abstract:
Catheters having an overmolded hub are disclosed. The overmolded catheter hubs may include one or more access hubs that are overmolded with an overmold material. The catheter hub may also be formed as a single piece from the overmold material. The overmolded construction can result in a stronger bond between the catheter body and the hub and can provide for access hubs having sufficient clarity for the observation of air bubbles in a contained fluid. The disclosed catheter hubs may also demonstrate improved balloon deflation rates when utilized with a catheter body having a distal balloon.
Abstract:
A medical device such as a tube or a balloon including wall structure with multiple layers. The wall structure can distribute stress, resulting in reduced defect propagation and failure.
Abstract:
A prostatic tissue expander can include a urethral catheter, a positioning balloon disposed about the urethral catheter, an expander balloon disposed about the urethral catheter, and a containment assembly disposed about the expander balloon, wherein the containment assembly limits a degree of distension of the expander balloon, and the fiber patterns of the containment assembly are exposed. Such a prostatic tissue expander can further include additional reinforcements and cuffs. The method for positioning a prostatic tissue expander can be used in a method for treating benign prostatic hypertrophy.
Abstract:
A balloon catheter used in PTCA (Percutaneous Translumin Coronary Angioplasty), a catheter shaft for the catheter and a method of production of a balloon. The balloon catheter includes a catheter shaft (1A) comprising a multi-lumen shaft inclusive of a dual lumen tube and a balloon (2) disposed at the remotest end of the catheter shaft (1A). The catheter shaft (1A) is equipped with at least a guide wire lumen (4A) and an inflation lumen (4B), and is made of a resin material having a bending modulus contributing to push force transmission property and curved route follow-up property. A resin material layer (tube (5)) having high lubrication property and surface energy of not greater than 50 dyn/cm is disposed on the inner surface of the guide wire lumen (4A).
Abstract:
An improved intra-aortic balloon catheter having an outer tube of a polymeric material and an inner tube of superelastic metal material with varying flexibility. The inner tube has a proximal end and a distal end. The inner tube is more flexible proximate the distal end than the proximal end.
Abstract:
An integral, single-piece, high-strength, thin-walled, inflatable catheter (8) is disclosed. The catheter (8) has one end (12) partially or entirely closed, and is at least uniaxially oriented along its entire length. The method and apparatus (50) for making the catheter (8) is also disclosed. The catheters of this invention have a tensile strength of about 10,000 psi or greater at every point along the catheter including the partially closed end (12).