Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
120 words
In a tissue macerating instrument of the type having a rotatable rod with a cutter member at one end, said rod being disposed in a tube which itself is disposed in an extension of a handle, the improvement comprising: a frusto-conical member attached at its small end to said extension, the large end being a tissue engaging edge, at least one aperture in said extension adjacent said frusto-conical member; an annular intermediate wall extending longitudinally between the small end of said frusto-conical member and one end of said and having an inflow aperture in sid intermediate wall in communication with said at least one aperture in said extension; the interior of said tube being in communication with an outflow passageway.
Claim 2
Dependent Claim
120 words
In a tissue macerating instrument of the type having a rotatable rod with a cutter member at one end, said rod being disposed in a tube which itself is disposed in an extension of a handle, the improvement comprising: a frusto-conical member attached at its small end to said extension, the large end being a tissue engaging edge, at least one aperture in said extension adjacent said frusto-conical member; an annular intermediate wall extending longitudinally between the small end of said frusto-conical member and one end of said and having an inflow aperture in sid intermediate wall in communication with said at least one aperture in said extension; the interior of said tube being in communication with an outflow passageway.
Claim 3
Dependent Claim
20 words
The instrument of claim 1 wherein said annular intermediate wall is an extension of said frusto-conical member into said extension.
Claim 4
Dependent Claim
20 words
The instrument of claim 1 wherein radially inwardly extending fins are disposed on the inner surface of said frusto-conical member.
Claim 5
Dependent Claim
35 words
The instrument of claim 3 wherein said fins increase in height in a direction away from said tissue engaging edge of said frusto-conical member, and are then of constant height for a substantial longitudinal distance.
Claim 6
Dependent Claim
29 words
The instrument of claim 1 wherein said tissue engaging edge of said frusto-conical member lies in a plane which is an angle to the axis of the rotatable rod.
Claim 7
Dependent Claim
40 words
The instrument of claim 1 wherein said tissue engaging edge of said frusto-conical member is at an angle to the axis of said rotatable rod and is conformed to lie closely on the surface of a generally spherical shaped object.
Claim 8
Dependent Claim
38 words
The instrument of claim 1 wherein an aperture is provided in said intermediate wall to redirect said fluid in the space between said tube and said extension to the interior of said tube to mix with macerated material.
Claim 9
Dependent Claim
17 words
The instrument of claim 1 wherein the aperture end of said rod is a tapered archimedes screw.
Claim 10
Dependent Claim
20 words
The instrument of claim 1 wherein said at least one aperture in said extension comprises a plurality of longitudinal slots.
Claim 11
Dependent Claim
11 words
The instrument of claim 1 wherein said rod is longitudinally adjustable.
Claim 12
Dependent Claim
24 words
The instrument of claim 1 wherein a portion of said inflow passageway is formed by said extension, said annular intermediate wall and said tube.
Claim 13
Dependent Claim
45 words
The instrument of claim 1 wherein said inflow passageway has a total cross-sectional area such that the total pressure drop of the inflow is low, said outflow passageway being substantially smaller than said inflow passageway to prevent sudden reduction of pressure at the operative site.
Claim 14
Dependent Claim
15 words
The instrument of claim 1 wherein said inflow passageway comprises a plurality of parallel passageways.