摘要:
Method of forming a multiple balloon catheter includes extruding a tube and a plurality of ribs through a die to form a monolithic element that spans between first and second ends with the plurality of ribs extending along the length of the tube to define a corresponding number of a plurality of channels that extend along the length of the tube. Positioning a portion of the tube into a mold and constricting a proximal end portion and a distal end portion of the tube that is positioned in the mold. Inflating the tube to produce an inner balloon having a body portion that spans between proximal and distal end portions and cutting the inner balloon to separate the inner balloon from a remainder of the tube. Disposing an outer balloon including a plurality of holes around the inner balloon and aligning the plurality of holes with the plurality of channels.
摘要:
Devices and methods for balloon delivery of rapamycin and other hydrophobic compounds to the wall of blood vessels. Balloon catheters, such as those used for balloon angioplasty, are modified with the addition of a reservoir of dry micelles, disposed at a suitable location within the balloon or catheter. The reservoir may be installed within the angioplasty balloon, within a lumen in communication with the angioplasty balloon, either as a loose or packed powder or as a film coating. The micelle preparation is reconstituted and the micelles are mobilized when the aqueous solution used to inflate the balloons is injected into the catheter. The micelles are infused into tissue surrounding the balloon when pressurized fluid within the balloon leaks through the wall of the balloon.
摘要:
A device and system for thermally affecting tissue that includes a balloon catheter with a reduced distal length for ease of navigation and that also includes a balloon that is more resistant to bursting and delamination. The balloon may include a proximal neck generally attached to an elongate body and a distal neck generally attached to a shaft disposed within the elongate body. The distal neck is turned inward to extend within the balloon chamber and the proximal neck may either extend within the chamber or extend proximally away from the balloon chamber. Alternatively, the device may include an inner balloon and an outer balloon, the distal necks of both being turned inward and extending within the inner balloon chamber. The proximal necks may both also be turned inward to extend within the chamber or the proximal neck of the outer balloon may extend away from the balloon chamber.
摘要:
Systems and methods for treating a blood clot positioned within a blood vessel are disclosed. In one embodiment, a balloon member is positioned on a distal end region of a catheter and an ultrasound emitting element is positioned within the balloon member and arranged for actively emitting ultrasound. In some exemplary embodiments, the disclosure provides a multi-wall balloon member and a multi-lumen catheter with at least one and/or all cavities of the balloon member arranged for heat transfer with the ultrasound emitting element. The disclosure also provides catheter arrangements with an ultrasound emitting element arranged to heat tissue adjacent to the balloon member. Additionally, in some embodiments, at least one and/or all walls of the balloon member have apertures arranged to release a therapeutic agent such as a thrombolytic drug.
摘要:
A system for treatment target tissue comprises an ablation device and an energy delivery unit. The ablation device comprises an elongate tube with an expandable treatment element. The system delivers a thermal dose of energy to treat the target tissue. Methods of treating target tissue are also provided.
摘要:
The invention relates to a device for emptying stools from the rectum of a patient by means of a shaft body which is introduced into the bowel via the anus, is axially and radially compressable or foldable and is provided with a balloon in the shape of a dumbbell or hour glass for securing the trans-anal positioning of the device. The invention is further characterized by the special design and choice of material of the shaft body and the balloon sleeve and by the specific positioning of the balloon on the shaft body, wherein the axial deflection of the free front end of the shaft body is limited or an uncontrolled deflection of the shaft is prevented, and the probability of a perforation of the bowel wall under the effect of a force acting axially upon it from the shaft body is thus significantly reduced by the bowel tube according to the invention.
摘要:
The present invention relates to a balloon (1) for treating stenosis and the method for obtaining this balloon. The method comprises the steps of : bringing the balloon in the deployed configuration; placing a plurality of stylets (17) that are arranged in the axial direction along the outer wall (10) of the balloon; pushing the stylets towards the balloon core (11) in the radial direction such as to form a plurality of laps (12); laying the laps about the core in the tangential direction such as to lay each lap on an adjacent stylet; removing the stylets such as to form a plurality of cavities (13) comprised between each lap and the balloon core; filling the cavities with the drug.