255 results about "External catheter" patented technology

A method for implanting a prosthesis centrally within a curved lumen includes loading a prosthesis into a delivery sheath, advancing the sheath in a patient towards the curved lumen to place at least the proximal end of the prosthesis within the curved lumen, and centering the proximal end of the prosthesis and / or the distal end of the sheath within the curved lumen. In a first advancing step, the outer catheter containing the inner sheath is advanced together towards the curved lumen to a location proximal of the curved lumen and, in a second advancing step, the inner sheath containing the prosthesis is advanced into the curved lumen to place at least the proximal end within the curved lumen while the outer catheter substantially remains at the location. After centering, the proximal end of the prosthesis is deployed centered within the curved lumen.

A delivery system including an inner catheter with a reinforcing element and an outer catheter having a proximal end attached to a movable member. An abutment element may be attached to a distal end of the reinforcing element, configured to engage an implantable device disposed between the inner catheter and the outer catheter.

Stent delivery system and method of manufacturing same. In one embodiment, the stent delivery system comprises an inner catheter. A handle is disposed at the proximal end of the inner catheter, and an enlarged tip is disposed at the distal end thereof. A stent engaging sleeve coaxially surrounds and is secured to a portion of the inner catheter proximally contiguous to the tip. The stent engaging sleeve is used to frictionally engage a stent mounted thereover in such a way as to prevent the stent, during deployment, from sliding proximally relative to the inner catheter. The system additionally comprises a self-expandable stent of the type comprising a knitted mesh of nitinol wire flexible in both the radial and longitudinal axes. The stent is mounted over the stent engaging sleeve in a longitudinally stretched state and is maintained, until deployment, in the stretched state by a stent restraining sleeve. The stent restraining sleeve, which coaxially surrounds the stent and is appropriately sized to maintain the stent in its stretched state, is a braided tube formed directly over the stent. The system also includes an outer catheter that surrounds much of the distal end of the inner catheter up to its tip, the outer catheter being adapted for axial movement relative to the inner catheter. The distal end of the outer catheter, which is mechanically coupled to the distal end of the stent for axial movement, is provided with an increased inner diameter to accommodate those components positioned between the inner and outer catheters. To facilitate the advancement of the outer catheter over the stent restraining sleeve during the assembly of the system, the outer catheter is fabricated with a longitudinal split extending proximally from its distal end. After the outer catheter has been positioned over the stent restraining sleeve, the split is sealed.

A catheter assembly configured for retrieval of medical devices from vasculature. The catheter includes an outer catheter and an inner catheter. The inner and / or outer catheter can include a tapered terminal end portion. A mandrel can be provided to facilitate advancement of the assembly within vasculature.

The invention provides male external catheters having kink-resistant drainage stems as well as methods for making male external catheters having kink-resistant drainage stems. Specifically, the invention provides male external catheters having a drainage stem designed to reduce or prevent kinking that can occur during use when a drainage hose fitting and drainage hose are attached to the catheter. The invention also provides male external catheters having skin-friendly compounds and methods for making male external catheters having skin-friendly compounds. Specifically, the invention provides male external catheters designed to have skin-friendly compounds that contact the user's skin when the catheter is being used.

The present invention is primarily directed to a rapid exchange catheter that permits axial movement of an inner conduit within an outer conduit comprising: • an outer conduit; • an inner conduit, suitable for total or partial passage over a guide wire, wherein said inner conduit is movably disposed within the lumen of said outer conduit, wherein the proximal end of said inner conduit is angled such that it pierces the wall of said outer conduit; • means for permitting axial movement of said inner conduit within said outer conduit, such that said movement is not hindered by the passage of the angled proximal part of the inner conduit through said outer conduit; and • means, situated at the proximal end of the outer conduit, for causing axial pushing-pulling movements of said inner conduit.