EP0442137B1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Atherectomy device
Assignee: Angiomed GmbH and Co Medizentechnik KG
•
Filing: 1990-12-22
•
Granted: 1996-02-14
•
Expires: 2010-12-22
Abstract
Abstract The invention proposes a new atherectomy device which has at least one rotatable part for the removal of deposits, occlusions or the like in a vessel, such as a blood vessel, and in which the rotating member (2, 3, 4) can be expanded radially from a position near the axis. <IMAGE>
Inventors
- 👤 Wolfram Schnepp-Pesch
- 👤 Josef Lindenberg
- 👤 Erhard Dr. Starck
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 17:54
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320725; A61B17/22; A61B2017/22038; A61B2017/22042; A61B2017/22044
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
152 words
Atherectomy device having a catheter and an elongated part formed by a hollow element passed through the same and a draw wire extending through the latter and at the proximal end of the hollow element is provided a rotary working element, the hollow element (1) being provided at its distal end to the rotary drive of the working element (2, 3, 4) connected thereto with a motor rotary drive (38), characterized in that the working element is an element (2, 3, 4) radially spreadable from an axially near position, that the draw wire (21) extending through the hollow element (1) engages on the spreadable element (2, 3, 4) for spreading the latter from the distal end of the draw wire (21), that the hollow element (1) is a helically wound hollow wire and that the rotary element (2, 3, 4) is constructed in one piece with the hollow wire parts (1, 9).
Claim 2
Dependent Claim
27 words
Device according to claim 1, characterized in that end regions of the rotary element (2, 3, 4) are movable axially towards one another in the radial spreading.
Claim 3
Dependent Claim
59 words
Device according to claim 1 or 2, characterized in that the rotary elements are wire portions (2, 3, 4), which are held together at spaced connection points (7, 8) and that the connection points (7, 8) can be moved axially towards one another, so that the wire portions (2, 3, 4) are spreadable in particular in their central regions.
Claim 4
Dependent Claim
35 words
Device according to claim 3, characterized in that the draw wire (21) is guided through the connection points (7, 8) and by the same the connection points (7, 8) can be drawn towards one another.
Claim 5
Dependent Claim
30 words
Device according to claim 3, characterized in that the wire portions (2, 3, 4) are held together by sleeves (11, 12) in the vicinity of the connection points (7, 8).
Claim 6
Dependent Claim
34 words
Device according to one of the claims 1 to 5, characterized in that a helically wound hollow wire extension (9) is proximally connected to the rotary element and/or the wire portions (2, 3, 4).
Claim 7
Dependent Claim
23 words
Device according to one of the claims 1 to 6, characterized in that the rotary elements (2, 3, 4) have cutting edges (16).
Claim 8
Dependent Claim
22 words
Device according to claim 7, characterized in that the cutting edges (16) are formed by grinding the individual wires (2, 3, 4).
Claim 9
Dependent Claim
27 words
Device according to claim 8, characterized in that the cutting edges (16) extend over only part (A) of the length of the individual wires (2, 3, 4).
Claim 10
Dependent Claim
49 words
Device according to one of the claims 1 to 9, characterized in that the draw wire (21) proximally projects over the cutting edges (16) and/or individual wires (2, 3, 4) and to its projecting end (at 13) a widened abutment (ball 22) is fixed against a distally exerted tension.
Claim 11
Dependent Claim
31 words
Device according to one of the claims 6 to 10, characterized in that the proximal hollow wire extension (9) is provided at its proximal end (13) with a reinforcement (sleeve 14).
Claim 12
Dependent Claim
18 words
Device according to claim 10 or 11, characterized in that the abutment is constructed as a ball (22).
Claim 13
Dependent Claim
18 words
Device according to one of the claims 10 to 12, characterized in that the abutment (22) is smooth.
Claim 14
Dependent Claim
18 words
Device according to one of the claims 10 to 12 characterized in that the abutment (22) is roughened.
Claim 15
Dependent Claim
21 words
Device according to one of the claims 10 to 14, characterized in that the abutment (22) is provided with cutting parts.
Claim 16
Dependent Claim
32 words
Device according to one of the claims 1 to 15, characterized in that the draw wire (21) and hollow wire (1) are axially adjustable and lockable relative to the motor drive (38).
Claim 17
Dependent Claim
32 words
Device according to one of the claims 1 to 16, characterized in that the draw wire (21) is constructed as a hollow wire and its cavity optionally extends through the abutment (22).
Claim 18
Dependent Claim
22 words
Device according to claim 7, characterized in that the cutting edge or edges (16) extend substantially axially in the axially near position.
Claim 19
Dependent Claim
16 words
Device according to claim 7, characterized in that the cutting edges (16) have a tong-like construction.
Claim 20
Dependent Claim
20 words
Device according to claim 19, characterized in that the cutting edges (16) are ground axial edges of the tong jaws.
Claim 21
Dependent Claim
39 words
Device according to one of the preceding claims, characterized in that the motor rotary drive (38) in the vicinity of the distal ends (at 34, 37) engages in non-rotary manner on the hollow wire (1) and/or draw wire (21).
Claim 22
Dependent Claim
38 words
Device according to one of the preceding claims, characterized in that a rotary connecting part of the spreadable element connected to the rotary drive can be moved backwards and forwards axially relative to the guide part receptacle (9).
Claim 23
Dependent Claim
22 words
Device according to claim 22, characterized in that the rotary connecting part can be moved axially backwards and forwards in manual manner.
Claim 24
Dependent Claim
22 words
Device according to claim 22, characterized in that the rotary connecting part can be axially moved backwards and forwards in motor manner.
Claim 25
Dependent Claim
68 words
Device according to claim 24, characterized by a sleeve connected in axially fixed, but rotary manner to the connecting part (10) and in non-rotary manner to the drive casing (2) and having a closed groove circumferentially guided in the form of a meander and in which engage the cams of a transfer part rotating at a lower angular speed than the angular speed of the connecting part (10).
Claim 26
Dependent Claim
21 words
Device according to one of the claims 22 to 25, characterized by a receptacle (16) formed on the connecting part (10).
Claim 27
Dependent Claim
37 words
Device according to one of the claims 22 to 26, characterized in that in the reception part for the guide part is formed a groove (13) bounded on its two sides by shoulders and receiving a flange.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.