THROMBUS REMOVAL SYSTEM AND PROCESS
First Claim
1. A medical device for removing a thrombus from a blood vessel, comprising a microcatheter lumen containing:
- a macrocoil thrombus engaging component having a length with a proximal end and a distal end, the length of the macrocoil comprised of microcoils that allow the length of the macrocoil to be extendable and flexible;
a first wire capable of providing force on the distal end of the macrocoil;
a second wire capable of providing force on the proximal end of the macrocoil;
wherein upon removal from the microcatheter lumen by tension on at least one of the first wire or second wire, the macrocoil expands and retains microcoils along a length of the macrocoil.
2 Assignments
0 Petitions
Accused Products
Abstract
A device capable of capturing and facilitating the removal of a thrombus in blood vessels (or stones in biliary or urinary ducts, or foreign bodies) uses a soft coil mesh with the aid of a pull wire or string to engage the surface of a thrombus, and remove the captured thrombus. The soft coil mesh is formed by an elongated microcoil element that forms the helical elements of a macrocoil element. The microcoil element provides a relatively elastic effect to the helical elements forming the macrocoil and allows for control of gripping forces on the thrombus while reducing non-rigid contact of the device with arterial walls. The use of multiple coil mesh elements, delivered through a single lumen or multiple lumens, preferably with separate control of at least one end of each coil, provides a firm grasp on a distal side of a thrombus, assisting in non-disruptive or minimally disrupted removal of the thrombus upon withdrawal of the device.
-
Citations
14 Claims
-
1. A medical device for removing a thrombus from a blood vessel, comprising a microcatheter lumen containing:
-
a macrocoil thrombus engaging component having a length with a proximal end and a distal end, the length of the macrocoil comprised of microcoils that allow the length of the macrocoil to be extendable and flexible; a first wire capable of providing force on the distal end of the macrocoil; a second wire capable of providing force on the proximal end of the macrocoil; wherein upon removal from the microcatheter lumen by tension on at least one of the first wire or second wire, the macrocoil expands and retains microcoils along a length of the macrocoil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification