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Memory Metal Holland Bv

Petrus A Besselink

Rohit C Sachdeva

Hans Hanssen

Wouter Markus

Nicolaas D Brouwer

An intra-corporal medical device, a medical device and a method of making an intra-corporal medical device. In one form, the device is formed from one or more tubes with a non-axisymmetric cross-sectional profile such that tines formed in a relatively planar surface of such a device exhibit the ability to accept larger deformations that will have improved mechanical properties, including a lower tendency to buckle under bending forces. In one form, the tube or tubes are made from shape memory materials such as Nitinol that can be expanded or bent in various directions in order to take advantage of shape memory effect, linear and non-linear pseudoelasticity and strain hardened cold work.

Tubing for manufacturing expandable devices

An improved endoluminal device. The device includes at least a control element (such as a guide wire) connected to a surrounding sheath and an elastic bias section to control changes to a bias force formed between the control element and the sheath. By applying an external force at a proximal end of the device, the shape can change between varying degrees of deformed shapes and an undeformed shape. In this way, both ease of insertion into the body lumen and anchoring to the lumen is promoted. A distal end of the assembly can be made to change shape for improved steerability, anchoring or both. In a particular form, the anchoring section can work as a floating parachute-like device to pull the assembly by means of the flow in the body lumen, while in a more particular form, the floating parachute-like device may be modified to act as a filter for trapping emboli.

Self-activating endoluminal device

Release mechanism for releasing a door-spring blocked by a blocking device, which mechanism comprises a temperature-sensitive control element for direct thermal actuation, by means of which the mechanism intervenes in the blocking device at a predetermined temperature of that element such that the door-spring is released. The release mechanism comprises for instance a rod guided for movement in longitudinal direction between a first end position and a second end position under a first bias in the direction to this first end position, and a control element comprising an SME material which at the predetermined temperature encloses the rod under a second bias greater than the first and in opposite direction thereto, which rod is coupled to a control member of the blocking device, which control member keeps the blocking device in operation in the first end position of the rod and renders the blocking device inoperative in the second end position of the rod. The release mechanism may further comprise a control circuit.

Release mechanism for a door spring

A medical/dental apparatus utilizing the properties of shape memory materials to variably control the spatial relationship between two or more elements having portions which are proximately disposed and overlapping relative to one another. Another portion of each element is connectable to part of a patient's body.

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7534 AT Enschede, Netherlands

Petrus A Besselink