Thrombectomy device
The invention relates to a thrombectomy device having a substantially cylindrical stent structure ( 1 ) comprised of a plurality of meshes ( 3, 4 ) and also two connectors ( 5, 5 ′) that are disposed at different meshes ( 3 ) at the proximal end of the stent structure ( 1 ). The device also has a guide wire ( 12 ), which comprises a coupling element ( 11 ) to which the connectors ( 5, 5 ′) are coupled, and a slit ( 7 ), which extends helically over the shell face ( 8 ) of the stent structure ( 1 ), and a tensioning clip ( 9 ) that spans the slit ( 7 ) at the proximal end.
1. A thrombectomy device comprising:
a substantially cylindrical stent structure ( 1 ) comprised of a shell face ( 8 ), a plurality of meshes ( 3 , 4 ) and two connectors ( 5 , 5 ′) that are disposed at different meshes ( 3 ) at the proximal end of the stent structure ( 1 ), and
a guide wire ( 12 ), which comprises a coupling element ( 11 ) to which the connectors ( 5 , 5 ′) are coupled,
wherein the stent structure is characterized by a continuous slit ( 7 ) open at a distal end thereof and which extends helically over and throughout the length of the shell face ( 8 ) of the stent structure ( 1 ), and a single tensioning clip ( 9 ) that continuously spans the slit ( 7 ) at the proximal end, the tensioning clip ( 9 ) being attached to combs at rims ( 10 , 10 ′) of the mesh structure,
wherein the tensioning clip forms an arch that points to the distal end of the stent structure, and
wherein the tensioning clip ( 9 ) and the connectors ( 5 , 5 ′) form a loop which converges in the coupling element ( 11 ).
2. A device according to claim 1 , characterized in that the stent structure comprises a shape-memory material.
3. The device of claim 2 , wherein the shape-memory material is Nitinol or a nickel-titanium-chromium alloy.
4. A device as defined in claim 1 , characterized in that the stent structure ( 1 ) is cut out of a tube and has rectangular or trapezoidal web cross-sections.
5. A device as defined in claim 4 , characterized in that the web cross-sections include a small side that forms the shell face ( 8 ) of the stent structure ( 1 ).
6. A device as defined in claim 1 , characterized in that the stent structure ( 1 ) is mechanically, hydraulically or electrochemically detachable from the guide wire ( 12 ).
7. A device as defined in claim 6 , characterized in that the coupling element ( 11 ) is configured as a detaching element.
8. A device as defined in claim 6 , characterized by two detaching spots.
9. The device of claim 8 , with an electrochemical detachment.
10. A device as defined in claim 1 , characterized in that the coupling element ( 11 ) is peripherally arranged to the connectors.
11. A device as defined in claim 1 , characterized in that the distal end of the stent structure ( 1 ) is widened-up in a conical or trumpet shape.
12. A device as defined in claim 1 characterized by marker elements.
13. A thrombectomy device comprising:
a substantially cylindrical stent structure ( 1 ) comprised of a plurality of meshes ( 3 , 4 ) and two connectors ( 5 , 5 ′) that are disposed at different meshes ( 3 ) at the proximal end of the stent structure ( 1 ), and
a guide wire ( 12 ), which comprises a coupling element ( 11 ) to which the connectors ( 5 , 5 ′) are coupled,
wherein the stent structure is characterized by a continuous slit ( 7 ) open at a distal end thereof and which extends helically over the shell face ( 8 ) of the stent structure ( 1 ), and a tensioning clip ( 9 ) that continuously spans the slit ( 7 ) at the proximal end, the tensioning clip ( 9 ) being attached to combs at rims ( 10 , 10 ′) of the mesh structure,
wherein the tensioning clip forms an arch that points to the distal end of the stent structure, and
wherein the tensioning clip ( 9 ) and the connectors ( 5 , 5 ′) form a loop which converges in the coupling element ( 11 ).