EP0310285A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Surgical cutting instrument with end and side openings
Assignee: Baxter International Inc
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Filing: 1988-09-20
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Granted: —
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Expires: 2008-09-20
Abstract
Abstract A surgical cutting instrument (11) comprising: an outer tube (14) sized for insertion through an opening in a patient, the outer tube (14) having a distal end wall (52), a peripheral wall (51) and a longitudinal axis (64), the outer tube (14) having first and second openings (16, 17), the first opening (16) being located at least primarily in the distal end wall (52) and the second opening (17) being located at least primarily in the peripheral wall (51), each of the openings (16, 17) having first and second cutting edges (58, 60, 66, 70, 73) defining portions of the periphery of such openings (16, 17); and an inner cutting member (18) rotatable within the outer tube (14), the inner cutting member (18) having at least one cutting edge (74, 76) cooperable with the first and second cutting edges (58, 60, 66, 70, 73) of the openings (16, 17) of the outer tube (14) for cutting material from within the patient with a shearing action that progresses along the first and second cutting edges (66, 70) as the inner cutting (18) member rotates.
Inventors
- 👤 James Albert Thimsen
- 👤 Terry Lane Whipple
- 👤 Richard Bernard Caspari
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 03:32
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/00736; A61F9/00763; A61B; A61B17/00; A61B17/32; A61B17/320016; A61B17/32002; A61B2017/00681; A61B2017/00685
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
141 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a distal end wall, a peripheral wall, a longitudinal axis and first and second openings, said first opening being located at least primarily in said distal end wall and said second opening being located at least primarily in said peripheral wall, each of said openings having first and second cutting edges defining portions of the periphery of such openings; and an inner cutting member rotatable within said outer tube, said inner cutting member having at least one cutting edge cooperable with said first and second cutting edges of said openings of said outer tube for cutting material from within the patient with a shearing action that progresses along said first and second cutting edges as said inner cutting member rotates.
Claim 2
Dependent Claim
141 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a distal end wall, a peripheral wall, a longitudinal axis and first and second openings, said first opening being located at least primarily in said distal end wall and said second opening being located at least primarily in said peripheral wall, each of said openings having first and second cutting edges defining portions of the periphery of such openings; and an inner cutting member rotatable within said outer tube, said inner cutting member having at least one cutting edge cooperable with said first and second cutting edges of said openings of said outer tube for cutting material from within the patient with a shearing action that progresses along said first and second cutting edges as said inner cutting member rotates.
Claim 3
Dependent Claim
17 words
An instrument as defined in claim 1 wherein said inner cutting member is a helical cutter blade.
Claim 4
Dependent Claim
34 words
An instrument as defined in either of claim 1 or 2 wherein said first edge of said second opening extends circumferentially of said outer tube at an acute angle relative to a radial plane.
Claim 5
Dependent Claim
49 words
An instrument as defined in claims 1, 2 or 3 wherein the peripheral wall of said outer tube is generally cylindrical and has an outside diameter and the ratio of the length of the periphery of said second opening to said diameter is at least about 1.5 to 1.
Claim 6
Dependent Claim
62 words
An instrument as defined in claims 1, 2, 3 or 4 wherein said first edge of the second opening includes a proximal edge and the second opening has a distal edge parallel to the proximal edge, each of the distal and proximal edges is oriented at an acute angle relative to a line perpendicular to said longitudinal axis of said outer tube.
Claim 7
Dependent Claim
71 words
An instrument as defined in any preceding claim wherein the first and second cutting edges of the second opening intersect at an angle of at least about 90 degrees to define a corner and the cutting edge of the inner cutting member cooperates with said intersecting edges for cutting material with a cutting action that progresses along both of the intersecting edges toward said corner as the inner cutting member rotates.
Claim 8
Dependent Claim
35 words
An instrument as defined in any preceding claim wherein said end wall is generally hemispherical, said first and second cutting edges of the first opening extend proximally, are parallel and are joined by end edges.
Claim 9
Dependent Claim
130 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a distal end portion; said outer tube having an opening in said distal end portion; said outer tube having first and second cutting edges defining portions of the periphery of the opening and substantially intersecting at an angle of at least about 90 degrees to define a corner; an inner cutting member rotatable within said outer tube; and said inner cutting member having a cutting edge cooperable with both said first and second cutting edges of the outer tube for cutting material from within the patient with a shearing action that progresses along both said first and second cutting edges toward said corner as the inner cutting member rotates.
Claim 10
Dependent Claim
130 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a distal end portion; said outer tube having an opening in said distal end portion; said outer tube having first and second cutting edges defining portions of the periphery of the opening and substantially intersecting at an angle of at least about 90 degrees to define a corner; an inner cutting member rotatable within said outer tube; and said inner cutting member having a cutting edge cooperable with both said first and second cutting edges of the outer tube for cutting material from within the patient with a shearing action that progresses along both said first and second cutting edges toward said corner as the inner cutting member rotates.
Claim 11
Dependent Claim
117 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a peripheral wall and a longitudinal axis; at least one opening located at least primarily in said peripheral wall having at least one of a distal edge and a proximal edge positioned at an angle relative to a radial plane, said at least one edge being a cutting edge; and an inner cutting member rotatable within said outer tube and having a cutting edge cooperable with said at least one edge for cutting material from within the patient with a shearing action that progresses along said at least one edge as said inner cutting member rotates.
Claim 12
Dependent Claim
117 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a peripheral wall and a longitudinal axis; at least one opening located at least primarily in said peripheral wall having at least one of a distal edge and a proximal edge positioned at an angle relative to a radial plane, said at least one edge being a cutting edge; and an inner cutting member rotatable within said outer tube and having a cutting edge cooperable with said at least one edge for cutting material from within the patient with a shearing action that progresses along said at least one edge as said inner cutting member rotates.
Claim 13
Dependent Claim
83 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a peripheral wall, a curved end wall and a longitudinal axis; at least one opening in said end wall, said opening having proximally extending edges joined by end edges; and a helical cutting member rotatable within said outer tube and having a cutting edge cooperable with at least the proximally extending edges of said opening for cutting material from within the patient.
Claim 14
Dependent Claim
83 words
A surgical cutting instrument comprising: an outer tube sized for insertion through an opening in a patient, said outer tube having a peripheral wall, a curved end wall and a longitudinal axis; at least one opening in said end wall, said opening having proximally extending edges joined by end edges; and a helical cutting member rotatable within said outer tube and having a cutting edge cooperable with at least the proximally extending edges of said opening for cutting material from within the patient.
References Cited (Backward Citations)
No citation records indexed.
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