US5725543A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical instrument for atherectomy
Assignee: Individual
•
Filing: 1994-03-09
•
Granted: 1998-03-10
•
Expires: 2014-03-09
Abstract
Abstract A medical instrument for removing deposits on the walls of arteries and/or veins having at least one partially hollow body that can be introduced into the arteries and/or veins and a plurality of cutting bodies with cutting edges for removal of the deposits. A base body protrudes at least partially into the partially hollow body and the cutting bodies and pivotally connected to the base body.
Inventors
- 👤 Falah Redha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:18
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/32075; A61B17/320725; A61B17/3209; A61B17/3211; A61B2017/32113
Claims Analysis
Total Claims: 48
Claim 1
Independent Claim
142 words
In a medical instrument for removing deposits on the walls of at least one of arteries and veins having at least one partially hollow body (10-14) that can be introduced into said at least one of said arteries and said veins, having at least one of a traction means and an actuation means (20) that are removable from said at least one of said arteries and said veins, and having a plurality of cutting bodies (21, 22), each of said cutting bodies (21, 22) having at least one cutting edge (24) that points in a traction direction and removes the deposits, the improvement comprising: a base body (26, 27) protruding at least partially into the at least partially hollow body (10-14), and said plurality of cutting bodies (21, 22) extending in the traction direction pivotally connected to said base body (26, 27).
Claim 2
Dependent Claim
142 words
In a medical instrument for removing deposits on the walls of at least one of arteries and veins having at least one partially hollow body (10-14) that can be introduced into said at least one of said arteries and said veins, having at least one of a traction means and an actuation means (20) that are removable from said at least one of said arteries and said veins, and having a plurality of cutting bodies (21, 22), each of said cutting bodies (21, 22) having at least one cutting edge (24) that points in a traction direction and removes the deposits, the improvement comprising: a base body (26, 27) protruding at least partially into the at least partially hollow body (10-14), and said plurality of cutting bodies (21, 22) extending in the traction direction pivotally connected to said base body (26, 27).
Claim 3
Dependent Claim
63 words
In a medical instrument in accordance with claim 1, wherein a portion (30) of the base body (26, 27) protruding into the at least partially hollow body (10-14) is embodied as a tubular portion in which a device (32, 34) for relative adjustment of the at least partially hollow body (10-14) with respect to said plurality of cutting bodies (21, 22) is disposed.
Claim 4
Dependent Claim
42 words
In a medical instrument in accordance with claim 2, wherein the device (32, 34) is embodied as a length of one of a tube and a wire that is actuatable from outside said at least one of said arteries and said veins.
Claim 5
Dependent Claim
46 words
In a medical instrument in accordance with claim 3, wherein said plurality of cutting bodies (21, 22) are pivotably connected to said base body (26, 27) by a pivot shaft (36) which extends transversely to the traction direction of said at least partially hollow body (10-14).
Claim 6
Dependent Claim
45 words
In a medical instrument of in accordance with claim 4, wherein said plurality of cutting bodies (21, 22) are embodied as one of one-and two-armed levers, which in their rest position are accommodated at least substantially completely within the at least partially hollow body (10-14).
Claim 7
Dependent Claim
56 words
In a medical instrument in accordance with claim 5, wherein the base body (26, 27) comprises a stop (38), which in the rest position of said plurality of cutting bodies (21, 22) is disposed virtually unspaced apart from an end face (40) of said at least partially hollow body (10-14) facing said base body (26, 27).
Claim 8
Dependent Claim
34 words
In a medical instrument in accordance with claim 6, wherein the at least partially hollow body (10-14) is embodied as a hollow cylinder which receives the cutting bodies (21, 22) in their rest position.
Claim 9
Dependent Claim
40 words
In a medical instrument in accordance with claim 7, wherein a remote face end (41) of the at least partially hollow body (10-14) facing away from said base body (26, 27) has an opening (42) extending in the traction direction.
Claim 10
Dependent Claim
29 words
In a medical instrument in accordance with claim 8, wherein said remote face end (41) of the at least partially hollow body (10-14) is convex and free of edges.
Claim 11
Dependent Claim
40 words
In a medical instrument in accordance with claim 9, wherein two of said cutting bodies (21, 22) are connected by a common said pivot shaft (36), each said cutting body having one force arm and one load arm (43, 44).
Claim 12
Dependent Claim
64 words
In a medical instrument in accordance with claim 10, wherein an inner wall of the at least partially hollow body (10, 11, 12) comprises a plurality of pressure bodies (46), which in their operating position are pressure-connected to a respective said force arm (43) and in their rest position are pressure-connected to a respective said load arm (44) of the cutting bodies (21, 22).
Claim 13
Dependent Claim
22 words
In a medical instrument in accordance with claim 11, wherein the pressure bodies (46) are embodied as radial protrusions having slide curves.
Claim 14
Dependent Claim
28 words
In a medical instrument in accordance with claim 12, wherein an external profile of a longitudinal section of each of said cutting body bodies (21, 22) is curved.
Claim 15
Dependent Claim
73 words
In a medical instrument in accordance with claim 13, wherein a plurality of clamping bodies (48, 49, 50), which, depending on the operating position of said plurality of cutting bodies (21, 22), cooperate with one of the force arm and the load arm (43, 44) of the respective cutting body (21, 22) are connected to said device (32, 34) embodied as a length of one of a cable, said tube and said wires.
Claim 16
Dependent Claim
31 words
In a medical instrument in accordance with claim 14, wherein the clamping bodies (48, 49, 50) are wedge-shaped in axial cross section and face one another with their tapered face ends.
Claim 17
Dependent Claim
33 words
In a medical instrument in accordance with claim 15, wherein two said damping bodies (48, 49, 50) are provided between which the pivot shaft (36) of the cutting bodies (21, 22) is disposed.
Claim 18
Dependent Claim
31 words
In a medical instrument in accordance with claim 16, wherein one of said plurality of clamping bodies (50) is connected to the base body (26) and comprises an elastically deformable material.
Claim 19
Dependent Claim
36 words
In a medical instrument in accordance with claim 17, wherein at least one of the at least partially hollow body (10-14) and the base body (26, 27) forms a transverse bore (60, 61) for guide means.
Claim 20
Dependent Claim
32 words
In a medical instrument in accordance with claim 18, wherein the plurality of cutting bodies (21, 22) define a hollow space (52) embodied as a chamber, through which the device 32 extends.
Claim 21
Dependent Claim
42 words
In a medical instrument in accordance with claim 19, wherein each of said cutting bodies (21, 22) comprises at least one flank (54, 55) adjoining each of the cutting edges (24), each said flank (54, 55) comprising at least one cutting portion.
Claim 22
Dependent Claim
35 words
In a medical instrument in accordance with claim 20, wherein each of the plurality of cutting bodies (21, 22) comprise one of at least one formed-on leaflet spring and one shape memory alloy metal (SME).
Claim 23
Dependent Claim
64 words
In a medical instrument in accordance with claim 21, wherein said plurality of cutting bodies (21, 22) extending in the traction direction are connected by at least one of screws, welding, hard soldering, and cold deformation, to said base body (26, 27) and theft operating and rest positions are definable by adjustment of the at least partially hollow body (10-14) in the traction direction.
Claim 24
Dependent Claim
33 words
In a medical instrument in accordance with claim 22, wherein the plurality of cutting bodies (21, 22) comprise an elastically deformable material selected from the group consisting of metal, ceramic, plastic, and alloys.
Claim 25
Dependent Claim
50 words
In a medical instrument in accordance with claim 23, wherein the at least partially hollow body (10-14), the base body (26, 27), and a portion of the plurality of cutting bodies (21, 22) comprise electrically conductive material and are coated with an insulator except for the sharp cutting edges (25).
Claim 26
Dependent Claim
26 words
In a medical instrument in accordance with claim 24, wherein at least two pairs of said plurality of cutting bodies (21, 22) are disposed in series.
Claim 27
Dependent Claim
73 words
In a medical instrument in accordance with claim 2, wherein a plurality of clamping bodies (48, 49, 50), which, depending on the operating position of said plurality of cutting bodies (21, 22), cooperate with one of the force arm and the load arm (43, 44) of the respective cutting body (21, 22) are connected to said device (32, 34) embodied as a length of one of a cable, said tube and said wires.
Claim 28
Dependent Claim
31 words
In a medical instrument in accordance with claim 26, wherein the clamping bodies (48, 49, 50) are wedge-shaped in axial cross section and face one another with their tapered face ends.
Claim 29
Dependent Claim
33 words
In a medical instrument in accordance with claim 26, wherein two said clamping bodies (48, 49, 50) are provided between which the pivot shaft (36) of the cutting bodies (21, 22) is disposed.
Claim 30
Dependent Claim
31 words
In a medical instrument in accordance with claim 26, wherein one of said plurality of clamping bodies (50) is connected to the base body (26) and comprises an elastically deformable material.
Claim 31
Dependent Claim
33 words
In a medical instrument in accordance with claim 26, wherein the plurality of cutting bodies (21, 22) define a hollow space (52) embodied as a chamber, through which the device (32, 34) extends.
Claim 32
Dependent Claim
46 words
In a medical instrument in accordance with claim 1, wherein said plurality of cutting bodies (21, 22) are pivotably connected to said base body (26, 27) by a pivot shaft (36) which extends transversely to the traction direction of said at least partially hollow body (10-14).
Claim 33
Dependent Claim
44 words
In a medical instrument in accordance with claim 1, wherein said plurality of cutting bodies (21, 22) are embodied as one of one-and two-armed levers, which in their rest position are accommodated at least substantially completely within the at least partially hollow body (10-14).
Claim 34
Dependent Claim
56 words
In a medical instrument in accordance with claim 1, wherein the base body (26, 27) comprises a stop (38), which in the rest position of said plurality of cutting bodies (21, 22) is disposed virtually unspaced apart from an end face (40) of said at least partially hollow body (10-14) facing said base body (26, 27).
Claim 35
Dependent Claim
34 words
In a medical instrument in accordance with claim 1, wherein the at least partially hollow body (10-14) is embodied as a hollow cylinder which receives the cutting bodies (21, 22) in their rest position.
Claim 36
Dependent Claim
40 words
In a medical instrument in accordance with claim 1, wherein a remote face end (41) of the at least partially hollow body (10-14) facing away from said base body (26, 27) has an opening (42) extending in the traction direction.
Claim 37
Dependent Claim
29 words
In a medical instrument in accordance with claim 35, wherein said remote face end (41) of the at least partially hollow body (10-14) is convex and free of edges.
Claim 38
Dependent Claim
40 words
In a medical instrument in accordance with claim 1, wherein two of said cutting bodies (21, 22) are connected by a common said pivot shaft (36), each said cutting body having one force arm and one load arm (43, 44).
Claim 39
Dependent Claim
64 words
In a medical instrument in accordance with claim 1, wherein an inner wall of the at least partially hollow body (10, 11, 12) comprises a plurality of pressure bodies (46), which in their operating position are pressure-connected to a respective said force arm (43) and in their rest position are pressure-connected to a respective said load arm (44) of the cutting bodies (21, 22).
Claim 40
Dependent Claim
22 words
In a medical instrument in accordance with claim 38, wherein the pressure bodies (46) are embodied as radial protrusions having slide curves.
Claim 41
Dependent Claim
28 words
In a medical instrument in accordance with claim 1, wherein an external profile of a longitudinal section of each of said cutting body bodies (21, 22) is curved.
Claim 42
Dependent Claim
36 words
In a medical instrument in accordance with claim 1, wherein at least one of the at least partially hollow body (10-14) and the base body (26, 27) forms a transverse bore (60, 61) for guide means.
Claim 43
Dependent Claim
42 words
In a medical instrument in accordance with claim 1, wherein each of said cutting bodies (21, 22) comprises at least one flank (54, 55) adjoining each of the cutting edges (24), each said flank (54, 55) comprising at least one cutting portion.
Claim 44
Dependent Claim
35 words
In a medical instrument in accordance with claim 1, wherein each of the plurality of cutting bodies (21, 22) comprise one of at least one formed-on leaflet spring and one shape memory alloy metal (SME).
Claim 45
Dependent Claim
64 words
In a medical instrument in accordance with claim 1, wherein said plurality of cutting bodies (21, 22) extending in the traction direction are connected by at least one of screws, welding, hard soldering, and cold deformation, to said base body (26, 27) and their operating and rest positions are definable by adjustment of the at least partially hollow body (10-14) in the traction direction.
Claim 46
Dependent Claim
33 words
In a medical instrument in accordance with claim 1, wherein the plurality of cutting bodies (21, 22) comprise an elastically deformable material selected from the group consisting of metal, ceramic, plastic, and alloys.
Claim 47
Dependent Claim
50 words
In a medical instrument in accordance with claim 1, wherein the at least partially hollow body (10-14), the base body (26, 27), and a portion of the plurality of cutting bodies (21, 22) comprise electrically conductive material and are coated with an insulator except for the sharp cutting edges (25).
Claim 48
Dependent Claim
26 words
In a medical instrument in accordance with claim 1, wherein at least two pairs of said plurality of cutting bodies (21, 22) are disposed in series.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-03-09 | 2001-09-08 | 2002-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-03-09 | 2005-09-08 | 2006-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-03-09 | 2009-09-08 | 2010-03-10 | $7700.00 | Window Closed / Lapsed |