Abstract: A prosthesis includes a tube with a proximal and distal flange around the tube. The distal and proximal flanges have a radial position, projecting radially outward to clamp tissue between the flanges. The flanges include distal flange feet and proximal flange feet. The distal and proximal flange feet bend from the radial position, against a pre-tension of the memory material, to an extended position, in which the distal and proximal flange feet extend in the longitudinal direction of the tube and are fixable there, returning when released to the radial position urged by the pre-tension. The flange feet have on inner sides a filling to increase the clamping force. The flange feet have a concave-curved part extending from the fixed ends of the flange feet. The hollow side of the concave faces the proximal and/or distal flange and the filling is provided in the hollow side of the concave.

Abstract: A prosthesis includes a tube with a proximal and distal flange around the tube. The distal and proximal flanges have a radial position, projecting radially outward to clamp tissue between the flanges. The flanges include distal flange feet and proximal flange feet. The distal and proximal flange feet bend from the radial position, against a pre-tension of the memory material, to an extended position, in which the distal and proximal flange feet extend in the longitudinal direction of the tube and are fixable there, returning when released to the radial position urged by the pre-tension. The flange feet have on inner sides a filling to increase the clamping force. The flange feet have a concave-curved part extending from the fixed ends of the flange feet. The hollow side of the concave faces the proximal and/or distal flange and the filling is provided in the hollow side of the concave.

Abstract: A horseman-securing device is configured in order to prevent a horseman sitting on the back of a four-legged animal from falling off, or being able to fall off the animal. It comprises securing device by means of which the horseman, in use, is releasably secured to the animal. The securing device is configured to secure the horseman secured to the animal in such a way that the horseman retains the freedom of movement to hinge his knee joints.

Abstract: A prosthesis for attachment in a passage surrounded by tissue, which includes a tubular element with a proximal and distal flange which extend around the tubular element. The distal and proximal flange have a radial position, in which they project in a radially outward direction in order to clamp tissue surrounding the passage between the distal and proximal flange. The distal flange and proximal flange consist of distal flange feet respectively proximal flange feet. The distal and proximal flange feet are bendable from the radial position, against a pre-tension created by the memory material, to an extended position, in which the distal and proximal flange feet extend in the longitudinal direction of the tubular element and are fixable in this extended position, in order to return to the radial position under the influence of the pre-tension once the fixing has been undone.

Abstract: The medical instrument includes: a first rod; a second rod which extends along the first rod; a longitudinal center line defined by the rods; and a manipulator. The manipulator includes a plurality of fingers, each with a first finger end and a second finger end. The second finger ends are free ends. The first finger ends are supported on the second rod in such a way that the fingers are operable, by moving the second rod in relation to the first rod, in order to be displaced from a first position to a second position. The distance from the free ends of the fingers to the longitudinal center line in the first position is different compared with the second position. A stent, a ring prosthesis and a prosthesis device are also described.

Abstract: A horseman-securing device is configured in order to prevent a horseman sitting on the back of a four-legged animal from falling off, or being able to fall off the animal. It comprises securing device by means of which the horseman, in use, is releasably secured to the animal. The securing device is configured to secure the horseman secured to the animal in such a way that the horseman retains the freedom of movement to hinge his knee joints.

Abstract: A constrictor for closing or constricting a passage through tissue of a hollow organ, includes: a ring having a thread-like body, which, viewed in the peripheral direction of the ring, extends in a wavy pattern; pins for fastening to tissue surrounding the passage to be closed or restricted; which pins are distributed over the periphery of the ring. Each pin has a fixed end rigidly attached to the ring, and a free pointed end. The constrictor is deformable from a first state into a second state, while a pretension is built up such that the constrictor, in the second state, is under a pretension acting in the direction of the first state. The pretension includes a torsional stress present in portions of the body at the fixed end of each pin, and inclined to want to pivot the respective pin back in the direction of the first state.

Abstract: An assembly having a stabiliser and an instrument to be positioned in or around a passage surrounded by body tissue, in particular vascular tissue. The stabiliser is provided with one or more suction mouths running in the shape of a loop, which suction mouths can be operationally connected to suction means in order to suck tightly to tissue close to and around said passage, which may still have to be made. The instrument has a head section for performing operations on vascular tissue. The stabiliser and the instrument are provided with, respectively, an instrument stop provided on the stabiliser and a stabiliser stop provided on the instrument, which, in the stop position when they are in contact with one another, unambiguously define the position of the head section with respect to the position of the loop shape. The instrument can be an applicator for positioning and fixing a fixing device in or around the passage, the head section being equipped for carrying and releasing the fixing device.

Abstract: The medical instrument includes: a first rod; a second rod which extends along the first rod; a longitudinal centre line defined by the rods; and a manipulator. The manipulator includes a plurality of fingers, each with a first finger end and a second finger end. The second finger ends are free ends. The first finger ends are supported on the second rod in such a way that the fingers are operable, by moving the second rod in relation to the first rod, in order to be displaced from a first position to a second position. The distance from the free ends of the fingers to the longitudinal centre line in the first position is different compared with the second position. A stent, a ring prosthesis and a prosthesis device are also described.

Abstract: An assembly includes a stabilizer and an instrument to be positioned in or around a passage surrounded by body tissue, in particular vascular tissue. The stabilizer is provided with a loop-shaped suction nozzle, which nozzle can be operationally connected to suction elements in order to suck tightly to tissue close to and around the passage. The instrument has a head section for performing operations on vascular tissue.

Abstract: The present invention relates to an assembly comprising: a ring having anchoring elements for attaching the ring in a passage surrounded by body tissue, in particular blood vessel tissue. an applicator for fitting the ring in the passage; in which the anchoring elements have an anchoring position in which they protrude with respect to the ring, and in which the anchoring elements comprise a memory material, such as a memory metal or memory polymer, and are designed so that they can be bent from an anchoring position counter to a spring force into a fitting position and can be frozen in this fitting position by a temperature treatment in order to bend the anchoring elements back from the fitting position by the effect of this spring force into the anchoring position when a predetermined threshold temperature is exceeded, and in which the applicator is provided distally with a carrier for carrying the ring.

Abstract: The present invention relates to an assembly comprising: a ring having anchoring elements for attaching the ring in a passage surrounded by body tissue, in particular blood vessel tissue. An applicator for fitting the ring in the passage; in which the anchoring elements have an anchoring position in which they protrude with respect to the ring, and in which the anchoring elements comprise a memory material, such as a memory metal or memory polymer, and are designed so that they can be bent from an anchoring position counter to a spring force into a fitting position and can be frozen in this fitting position by a temperature treatment in order to bend the anchoring elements back from the fitting position by the effect of this spring force into the anchoring position when a predetermined threshold temperature is exceeded, and in which the applicator is provided distally with a carrier for carrying the ring.

Abstract: An arrangement includes a first sleeve; a fixing device for fixing to vascular wall tissue; and a second sleeve. The fixing device includes a tubular element for accommodation within a passage surrounded by vascular wall tissue and is provided with fingers arranged distributed in the peripheral direction of the tubular element. The fingers have a first position in which they project radially outwards from the tubular element. The fingers are bent aside reversibly, against a resilient force, from the first position into a second position in which the projection of the fingers on a radial transverse surface of the tubular element is located essentially on and/or within the periphery of the tubular element. The fingers are fixed in the second position by the first sleeve in which the tubular element and fingers, which are in the second position, are accommodated to form a composite assembly.

Abstract: A device for narrowing the passage through surrounding vascular wall tissue, such as a ring prosthesis for reducing the size of the passage of a heart valve, includes a ring shaped element which is elastically contractile under influence of a resilient force for contracting the ring shaped element from an expanded, wide condition to a narrow condition to narrow the passage. A method of narrowing the passage through surrounding vascular wall tissue using such a device is also disclosed.

Abstract: A device for narrowing the passage through surrounding vascular wall tissue, such as a ring prosthesis for reducing the size of the passage of a heart valve, includes a ring shaped element which is elastically contractile under influence of a resilient force for contracting the ring shaped element from an expanded, wide condition to a narrow condition to narrow the passage. A method of narrowing the passage through surrounding vascular wall tissue using such a device is also disclosed.

Abstract: A cardiac prosthesis fixing device made up of a tubular element that can be accommodated inside a valve annulus of a heart and is provided with a bottom flange and top flange, between which the valve annulus can be accommodated. The bottom flange is bent, or can be bent, reversibly, against a resilient force, from a first outward-pointing position into a second position in which the projection of the bottom flange on a radial transverse surface of the tubular element is located essentially on and/or within the periphery of the tubular element and the bottom flange is fixed or can be fixed in the second position in such a way that the fixing can be released in order to bend back the bottom flange towards the first position under the influence of the resilient force.

Abstract: The present invention relates to an assembly comprising: a ring having anchoring elements for attaching the ring in a passage surrounded by body tissue, in particular blood vessel tissue. An applicator for fitting the ring in the passage; in which the anchoring elements have an anchoring position in which they protrude with respect to the ring, and in which the anchoring elements comprise a memory material, such as a memory metal or memory polymer, and are designed so that they can be bent from an anchoring position counter to a spring force into a fitting position and can be frozen in this fitting position by a temperature treatment in order to bend the anchoring elements back from the fitting position by the effect of this spring force into the anchoring position when a predetermined threshold temperature is exceeded, and in which the applicator is provided distally with a carrier for carrying the ring.

Abstract: The present invention relates to an applicator for a prosthesis of the type having a tubular element and distal and proximal flange fingers which are arranged distributed around the periphery of the tubular element and can be brought into a straightened position under spring tension for fitting the prosthesis. The applicator comprises a carrier tube with, at the distal end thereof, a supporting ring that fits in the tubular element; a movable release rod that is housed in the carrier tube and has a distal release ring at the distal end. The distal release ring is provided with an undercut that opens in the proximal direction, extends around the periphery and has an internal peripheral surface facing inwards. This internal peripheral surface lies within or on the outer contour of the external peripheral surface of the supporting ring.

Abstract: An assembly includes a stabiliser and an instrument to be positioned in or around a passage surrounded by body tissue, in particular vascular tissue. The stabiliser is provided with one or more suction nozzles running in the shape of a loop, which nozzles can be operationally connected to suction elements in order to suck tightly to tissue close to and around the passage, which may still have to be made. The instrument has a head section for performing operations on vascular tissue. The stabiliser and the instrument include, respectively, an instrument stop provided on the stabiliser and a stabiliser stop provided on the instrument, which, in the stop position when they are in contact with one another, unambiguously define the position of the head section with respect to the position of the loop shape.

Abstract: The present invention relates to an applicator for a prosthesis of the type having a tubular element and distal and proximal flange fingers which are arranged distributed around the periphery of the tubular element and can be brought into a straightened position under spring tension for fitting the prosthesis. The applicator comprises a carrier tube with, at the distal end thereof, a supporting ring that fits in the tubular element; a movable release rod that is housed in the carrier tube and has a distal release ring at the distal end. The distal release ring is provided with an undercut that opens in the proximal direction, extends around the periphery and has an internal peripheral surface facing inwards. This internal peripheral surface lies within or on the outer contour of the external peripheral surface of the supporting ring.