Mechanism for applying high radial force in less-elastic medical devices
AssigneeCook Medical Technologies LLC
InventorKasper Klausen
Life of this patent
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Abstract
A biodegradable device capable of producing a high radial force is described. Such a force will be created in devices made of relatively inelastic materials that are to be deployed to the vasculature or a body cavity in a patient. As the halves of the devices move together subject to a longitudinal force, at the point where they are in contact and unable to move closer together in the longitudinal direction, a radial force is created. The devices may have a tension element that assists in bringing the device halves together and which may partially and optionally remain within the body of the device.
Claims20
A medical device for implantation in a body vessel, the medical device having a proximal end and extending to a distal end and defining a longitudinal axis therebetween, the medical device comprising:
- a first device half comprising:
- a first collet comprising a first tube and defining a lumen therethrough;
- and
- a plurality of struts, each of the plurality of struts comprising a first arm and a second arm connected to the first arm, each first arm having a first end and extending angled away from the longitudinal axis to a second end, each second arm having a third end connected to the second end of the first arm and extending proximally and substantially parallel to the longitudinal axis to a fourth end, a locking element being disposed on at least one first arm, each of the first ends of the first arms being disposed within the lumen of the first tube;
- a second device half comprising:
- a second collet comprising a second tube defining a lumen therethrough;
- and
- a plurality of struts, each of the plurality of struts having a first arm and a second arm connected to the first arm, each first arm having a first end and extending angled away from the longitudinal axis to a second end, each second arm having a third end connected to the second end of the first arm and extending distally and substantially parallel to the longitudinal axis to a fourth end, a locking element being disposed on at least one first arm, each of the first ends of the first arms being disposed within the lumen of the second tube;
- and
- a tensioner having a first end and extending to a second end, the first end of the tensioner being attached to the first collet, the tensioner extending to the second end through the second collet;
- wherein the locking elements of the first and second device halves are configured to engage one another.
A medical device for implantation in a body vessel, the medical device having a proximal end and extending to a distal end and defining a longitudinal axis therebetween, the medical device comprising:
- a first device half comprising:
- a first collet comprising a first tube and defining a lumen therethrough;
- and
- a plurality of struts, each of the plurality of struts comprising a first arm and a second arm connected to the first arm, each first arm having a first end and extending angled away from the longitudinal axis to a second end, each second arm having a third end connected to the second end of the first arm and extending proximally and substantially parallel to the longitudinal axis to a fourth end, a locking element being disposed on at least one first arm, each of the first ends of the first arms being disposed within the lumen of the first tube;
- a second device half comprising:
- a second collet comprising a second tube defining a lumen therethrough;
- and
- a plurality of struts, each of the plurality of struts having a first arm and a second arm connected to the first arm, each first arm having a first end and extending angled away from the longitudinal axis to a second end, each second arm having a third end connected to the second end of the first arm and extending distally and substantially parallel to the longitudinal axis to a fourth end, a locking element being disposed on at least one first arm, each of the first ends of the first arms being disposed within the lumen of the second tube;
- and
- a tensioner having a first end and extending to a second end, the first end of the tensioner being attached to the first collet, the tensioner extending to the second end through the second collet;
- wherein the second collet further comprises a tensioner-retaining groove for retaining a portion of the tensioner.
A medical device for implantation in a body vessel, the medical device having a proximal end and extending to a distal end and defining a longitudinal axis therebetween, the medical device comprising:
- a first device half comprising:
- a first collet comprising a first tube and defining a lumen therethrough;
- and
- a plurality of struts, each of the plurality of struts comprising a first arm and a second arm connected to the first arm, each first arm having a first end and extending angled away from the longitudinal axis to a second end, each second arm having a third end connected to the second end of the first arm and extending proximally and substantially parallel to the longitudinal axis to a fourth end, a locking element being disposed on at least one first arm, each of the first ends of the first arms being disposed within the lumen of the first tube;
- a second device half comprising:
- a second collet comprising a second tube defining a lumen therethrough;
- and
- a plurality of struts, each of the plurality of struts having a first arm and a second arm connected to the first arm, each first arm having a first end and extending angled away from the longitudinal axis to a second end, each second arm having a third end connected to the second end of the first arm and extending distally and substantially parallel to the longitudinal axis to a fourth end, a locking element being disposed on at least one first arm, each of the first ends of the first arms being disposed within the lumen of the second tube;
- and
- a tensioner having a first end and extending to a second end, the first end of the tensioner being attached to the first collet, the tensioner extending to the second end through the second collet;
- wherein the first tube extends from a first tube end to a second tube end, the first collet comprises a first cap at the first tube end, and the first end of the tensioner is attached to the first cap.
Dependencies are inferred from the claim text.