Thrombus removal system and process
First Claim
1. A medical device for removing a thrombus from a blood vessel, comprising two microcatheter lumens, each 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;
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.
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Citations
18 Claims
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1. A medical device for removing a thrombus from a blood vessel, comprising two microcatheter lumens, each lumen containing:
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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;
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of providing a thrombogenic removal component into a patient comprising introducing at least two separate macrocoils into a vessel beyond a thrombus, maneuvering the at least two macrocoils so that they engage and connect with each other to form a thrombus capture system.
- 16. The method of claim 16 wherein the at least two macrocoils each comprise a collection of microcoil loops in a single strand.
Specification