EP0147192A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Recanalisation catheter with cutter head
Assignee: DSM Biomedical Inc
•
Filing: 1984-12-20
•
Granted: —
•
Expires: 2004-12-20
Abstract
Abstract A catheter (10, 10a, 100) to clear atherosclerotic blockages in a blood vessel (18) includes at its distal end a rotary cutting head (58, 58a, 162) which is driven by pressurised fluid fed up a passageway (26, 32a, 106) in the catheter and acting on a turbine part (76, 76a, 114) adjacent the cutting head. Passageways (32, 30a, 108) are provided to return the flow of fluid with cut away material. Any inflatable balloon (34, 200) may be present to seal the vessel.
Inventors
- 👤 Kenneth R. Kensey
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-22 22:33
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B17/22; A61B17/22031; A61B17/320016; A61B17/32002; A61B2017/00535; A61B2017/00553; A61M; A61M25/00; A61M25/10; A61M2025/1043; A61M2025/1097
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
72 words
A catheter having at a distal end means for opening a restriction within a blood or like vessel in a living body characterised in that the means comprises a cutting head (58, 58a, 162) to reduce the deposit (20) and in that passageways (26, 32a, 106) are provided in the catheter (10, 10a, 100) to supply means from the proximal end of the catheter to actuate the cutting head (58, 58a, 162).
Claim 2
Dependent Claim
72 words
A catheter having at a distal end means for opening a restriction within a blood or like vessel in a living body characterised in that the means comprises a cutting head (58, 58a, 162) to reduce the deposit (20) and in that passageways (26, 32a, 106) are provided in the catheter (10, 10a, 100) to supply means from the proximal end of the catheter to actuate the cutting head (58, 58a, 162).
Claim 3
Dependent Claim
52 words
A catheter according to Claim 1 characterised in that the cutting head (58, 58a, 162) is adapted to be rotated by the supply of pressurised fluid from the proximal end of the catheter and which is arranged to act on turbine means (76, 76a, 114) associated with cutting head (58, 58a, 106).
Claim 4
Dependent Claim
50 words
A catheter according to Claim 1 or 2, characterised in that the cutting head (58, 58a) is mounted for rotation about a shaft (46, 46a) projecting distally forward from a stationary body (36, 36a) which includes the passageways arranged to direct pressurised fluid on to the turbine means (76, 76a).
Claim 5
Dependent Claim
22 words
A catheter according to Claim 3 characterised in that the turbine means (76, 76a) is present in the stationary body (36, 36a).
Claim 6
Dependent Claim
19 words
A catheter according to Claim 3 characterised in that the turbine means (114, Figure 12), comprises a separate element.
Claim 7
Dependent Claim
58 words
A catheter according to any preceding Claim characterised in that there is a number of passageways (56a, Figures 5 and 6) arranged in compound angular relation to the major axis of the body (36a) in which they are present to impart a spinning motion to the pressurised fluid passed therethrough and directed on to the turbine means (76a).
Claim 8
Dependent Claim
40 words
A catheter according to any of Claims 1 to 5 . characterised in that the body (112, Figure 12) includes jet slots (132) arranged to direct pressurised fluid on to the turbine blades (142) to rotate the cutting head (162).
Claim 9
Dependent Claim
29 words
A catheter according to any preceding Claim characterised in that the cutting head (162) includes a plurality of cutting blades (172) having a negative or zero degree rake angle.
Claim 10
Dependent Claim
48 words
A catheter according to any preceding Claim characterised in that the catheter includes passageways (32, 30a, 108) arranged to transport restrictive material (20) removed from the inside wall of the vessel by the cutting head (58, 58a, 162) to the proximal end of the catheter (10, 10a, 100).
Claim 11
Dependent Claim
27 words
A catheter according to Claim 9 characterised in that inducer passages (146) are present to induce reverse flow, of fluid toward the proximal end of the catheter.
Claim 12
Dependent Claim
38 words
A catheter according to any preceding Claim characterised in that the body (112) and the turbine part (114) are housed in a manifold (110) and in that the cutting head (162) is mounted on the turbine part (114).
Claim 13
Dependent Claim
23 words
A catheter according to any preceding Claim characterised in that fluid constraining means (111) are present to retain pressurised fluid within the catheter.
Claim 14
Dependent Claim
47 words
A catheter according to Claim 12, characterised in that the cutter blade (174) is dimensioned relative to the fluid restraining means (111) to form a slight space between the vessel wall and the entrance to the interface between the cutter and the end of the shroud (150).
Claim 15
Dependent Claim
34 words
A catheter according to any preceding Claim characterised in that an annular flexible member (34, Figure 1 or 200, Figure 8) is present to be inflated to engage the inside of the vessel (18).
Claim 16
Dependent Claim
44 words
A catheter according to any preceding Claim characterised in that a tube (218, Figure 9) is present and extends through the catheter (100) and beyond the distal end thereof for the flow of profusion fluid into the artery (18) distally of the restriction (20).
Claim 17
Dependent Claim
31 words
A catheter according to any of Claims 1 and 7 to 10, 14 or 15 characterised in that the power means comprises a notary wire extending the length of the catheter.
Claim 18
Independent Claim
70 words
A method of opening a restriction in a blood or like vessel in a living body characterised by inserting a catheter according to any preceding Claim into a blood vessel of the living body, locating the distal end of the cutting head (58, 58a, 162) at the site of the restriction (20) and supplying power from the proximal end of the catheter to actuate the cutting head (58, 58a, 162).
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.