Abstract in simplified Chinese:一种设备,用于在气球放气时折叠一气球导管之气球,包括一卡箍及许多附着至卡箍之细长指状物。卡箍形成有一凸片及一凹口,并且卡箍之长度对应于导管之直径。卡箍予以折叠成一环形体,以使凸片与凹口联锁。环形体予以附着至气球导管之导管,而指状物在气球上面在实际相同轴向延伸。在操作时,指状物可在气球放气时之未受应力构形与在气球充气时之受到应力构形之间移动。在受到应力构形,指状物驱使抵靠气球,并被向受到应力构形偏压,叫回至未受应力构形。
Abstract:
A catheter has a shaft that defines a delivery lumen, for example, to deliver an elongate medical device therethrough; a proximal section of the catheter includes a seal zone portion, a handle portion and a proximal port portion. A relatively thin wall section of the proximal port portion extends between the seal zone portion and a proximal edge that defines part of a perimeter of a proximal opening of the delivery lumen. The handle portion projects laterally from the seal zone portion, generally opposite the relatively thin wall section. An inflation subassembly of the catheter includes a compliant sleeve member and an inflation lumen extending from the sleeve member, proximally along the shaft, and into a connector port formed in the handle portion. The inflation lumen may be formed by fusing a section of a tube to the shaft and molding the handle portion around another section of the tube.
Abstract:
A medical device includes a polymer scaffold (10) crimped to a catheter having an expansion balloon (12). A sheath pair (20,30) is placed over the crimped scaffold after crimping to reduce recoil of the crimped polymer scaffold and maintain scaffold-balloon engagement relied on to hold the scaffold to the balloon when the scaffold is being delivered to a target in a body. The sheath pair is removed by a health professional before placing the scaffold within the body.
Abstract:
Balloon catheter and methods for making and using balloon catheters are disclosed. An example balloon catheter may include a proximal shaft. A midshaft may be attached to the proximal shaft. The midshaft may have an outer wall. A distal shaft may be attached to the midshaft. A balloon may be coupled to the distal shaft. An inflation lumen may be defined that extends from the proximal shaft, through the midshaft, and into the distal shaft. The inflation lumen may be in fluid communication with the balloon. A support member may be attached to the outer wall of the midshaft.
Abstract:
An elongate shaft of a medical catheter including a thermoset polymeric tubular member including a skived distal portion. The skived distal portion includes a distally extending trough having a convex surface and a concave surface. A thermoplastic tubular sleeve may be positioned over at least a portion of the skived distal portion of the thermoset polymeric tubular member. In some instances, the thermoplastic tubular sleeve includes a crescent-shaped tubular portion defining a crescent-shaped lumen. The trough of the skived distal portion may extend through the crescent-shaped lumen. The thermoplastic tubular sleeve is thermally bonded to the inner and outer tubular members of a distal section of the elongate shaft at a guidewire port joint.
Abstract:
A catheter (10) having an elongated shaft (11) with a tubular member (22) which forms at least a portion of the shaft and which is formed of a biaxially oriented thermoplastic polymeric material, and a method of forming the catheter shaft by radially and longitudinally expanding the tubular member to biaxially orient the polymeric material, and, in one embodiment, tapering the tubular member to form a bending stiffness transition. A catheter of the invention has an improved combination of low bending stiffness, high rupture pressure, and high tensile strength^ for improved catheter performance.
Abstract:
The medical devices of the present invention include self-reinforcing polymer materials, based on the rigid-rod paraphenylene copolymer chemistry. Accordingly, the materials of the present invention provide a unique combination of physical properties that are advantageous for use in various medical devices. The medical devices may include those for maneuvering through the body passages of a patient, such as for example the circulatory system, to a desired site for treatment.