The present invention relates to a stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient. Specifically, the present invention relates to an expandable stent for an endoprosthesis used in the treatment of a narrowing of a cardiac valve and/or a cardiac valve insufficiency. So as to ensure that no longitudinal displacement of a valvular prosthesis fastened to a stent will occur relative the stent in the implanted state of the stent, even given the peristaltic motion of the heart, the stent according to the invention comprises at least one fastening portion via which the valvular prosthesis is connectable to the stent. The stent further comprises positioning arches and retaining arches, whereby at least one positioning arch is connected to at least one retaining arch.

Stent for the positioning and anchoring of a valvular prosthesis in an implantation site in the heart of a patient

A medical device for treating a heart valve insufficiency, with an endoprosthesis which can be introduced into a patient's body and expanded to secure a heart valve prosthesis in the patient's aorta with a catheter. In an embodiment, the endoprosthesis has a plurality of positioning arches configured to be positioned with respect to a patient's aorta and a plurality of retaining arches to support a heart valve prosthesis. The endoprosthesis includes a collapsed mode during the process of introducing it into the patient's body and an expanded mode when it is implanted. The endoprosthesis may be introduced into a patient's body and expanded via a catheter. In an embodiment, the catheter has first and second slide mechanisms configured to independently manipulate first and second sleeve elements to sequentially expand the endoprosthesis from the collapsed mode to the expanded mode.

Medical Device for Treating A Heart Valve Insufficiency or Stenosis

Apparatus is provided that includes a valve prosthesis (130) for attachment to a native valve complex of a subject. The prosthesis is configured to assume a compressed delivery state and an uncompressed implantation state. The prosthesis includes a support frame (140), which is shaped so as to define an upstream inlet (131) having upstream-most portions that are tapered in an upstream direction toward a central longitudinal axis of the prosthesis when the prosthesis assumes the compressed delivery state. The prosthesis further includes a flexible prosthetic heart valve component (118), coupled to the support frame. Other embodiments are also described.

Prosthetic valve having tapered tip when compressed for delivery

Embodiments of the invention provide a system and method for resecting a tissue mass. The system for resecting a tissue mass includes a surgical instrument and a first sensor for measuring a signal corresponding to the position and orientation of the tissue mass. The first sensor is dimensioned to fit insider or next to the tissue mass. The system also includes a second sensor attached to the surgical instrument configured to measure the position and orientation of the surgical instrument. The second sensor is configured to receive the signal from the first sensor. A controller is in communication with the first sensor and/or the second sensor, and the controller executes a stored program to calculate a distance between the first sensor and the second sensor. Accordingly, visual, auditory, haptic or other feedback is provided to the clinician to guide the surgical instrument to the surgical margin.

System and method for a tissue resection margin measurement device

A prosthetic valve including a wire frame having a generally tubular body portion, an interior area, a longitudinal axis, a first end comprising a plurality of crowns, and a second end comprising a greater number of crowns than the first end. The wire frame includes a plurality of adjacent rows of modified diamond-shaped structures extending between the first and second ends. The prosthetic valve further includes a valve structure that includes a plurality of leaflets and that is attached within the interior area of the wire frame.

Stents for prosthetic heart valves

The position of a prosthesis (e.g., a stent-graft) is monitored using non-ionizing energy during deployment and/or sheath pull-back after the prosthesis has been positioned at a desired location in a vessel, i.e. using a sensor like an electromagnetic sensing coil, an optical LED, a radio frequency beacon, a pressure wave beacon, an optical reflector, an ultrasound beacon.

Prosthesis Deployment Apparatus and Methods

A marker implant apparatus (100) includes an electromagnetic marker (102) adapted for implantation in a human patient; and a fastener (104) secured to said electromagnetic marker and adapted to engage tissue, said fastener (104) having a helical configuration and a piercing end (104a) configured to pierce tissue. Furthermore, a bifurcated tubular prosthesis is provided which includes a bifurcated tubular member having a proximal end and first and second tubular leg portions that extend in a direction distal to said proximal end, each tubular leg portion having an open end; and an electromagnetic marker secured to one of the tubular leg portions in the vicinity of the open end of that portion.

Prosthesis deployment apparatus comprising an electromagnetic marker

PROBLEM TO BE SOLVED: To provide a prosthesis disposing device for use in a lumen or a blood vessel and a disposing method. SOLUTION: Prosthesis (e.g. a stent-graft) 200 is monitored using non-ionizing energy in disposing or drawing out a sheath after disposed in a desired position in the blood vessel. As the non-ionizing energy, electromagnetic energy, non-ionizing radiation, or pressure wave is used to monitor the position of prosthesis in real time at least during disposition after the prosthesis is disposed in a desired position in the blood vessel or during drawing out the sheath. COPYRIGHT: (C)2008,JPO&INPIT

Prosthesis disposing device and disposing method

A bifurcated tubular prosthesis includes a bifurcated tubular member having a proximal end and first and second tubular leg portions (402,404) that extend in a direction distal to said proximal end, each tubular leg portion having an open end; and an electromagnetic marker (424a,424b) secured to one of the tubular leg portions in the vicinity of the open end of that portion. Furthermore, a marker implant apparatus (100) is provided which includes an electromagnetic marker (102a,102b) adapted for implantation in a human patient; and a fastener secured to said electromagnetic marker and adapted to engage tissue, said fastener having a helical configuration and a piercing end configured to pierce tissue.

Greg Mciff

Papers

Prosthesis Deployment Apparatus and Methods

Prosthesis deployment apparatus comprising an electromagnetic marker

Prosthesis disposing device and disposing method

Bifurcated prosthesis comprising electromagnetic markers