Working tool for accurate lateral resection of biological tissue and a method for use thereof
First Claim
1. A working tool for a resectoscope for side-to-side resection of biological tissue using predetermined lateral movement, said working tool having a distal end which is inserted into a body cavity, a proximal end which is adjacent to a user, and a longitudinal axis, and wherein said tool includes:
- a rotation mechanism which includes;
a handle assembly located at said proximal end of said tool, which includes at least two handles, at least one handle being movable in the longitudinal direction of the tool;
and a drive screw in communication via a cam element with said handle assembly, said drive screw positioned along the longitudinal axis and rotatable there around upon a predetermined translation of said at least one movable handle, the translation transformed to a rotation by said cam element;
and at least one cutting member assembly positioned at said distal end of said tool, and each of said at least one assembly includes;
a cutting member axle connected by at least one connecting element to said drive screw, said cutting member axle thereby being rotatable upon rotation of said drive screw;
and at least one cutting member connected to said cutting member axle and positioned at an end of said cutting member axle distal from said drive screw, said cutting member, when held in a predetermined position with respect to tissue to be resected, being operable to rotate and resect tissue to a predetermined depth in a substantially side-to-side manner upon rotation of said cutting member axle.
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Accused Products
Abstract
The present invention provides a novel and most useful working tool for a resectoscope, adapted to side-to-side resection of biological tissue using predetermined lateral movement. Said resectoscope is adapted to either cold or hot resection and is either flexible or rigid. The present invention also provides for a suitable cutting member assembly and to a method useful for lateral resection.
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Citations
67 Claims
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1. A working tool for a resectoscope for side-to-side resection of biological tissue using predetermined lateral movement, said working tool having a distal end which is inserted into a body cavity, a proximal end which is adjacent to a user, and a longitudinal axis, and wherein said tool includes:
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a rotation mechanism which includes;
a handle assembly located at said proximal end of said tool, which includes at least two handles, at least one handle being movable in the longitudinal direction of the tool;
and a drive screw in communication via a cam element with said handle assembly, said drive screw positioned along the longitudinal axis and rotatable there around upon a predetermined translation of said at least one movable handle, the translation transformed to a rotation by said cam element;
and at least one cutting member assembly positioned at said distal end of said tool, and each of said at least one assembly includes;
a cutting member axle connected by at least one connecting element to said drive screw, said cutting member axle thereby being rotatable upon rotation of said drive screw;
and at least one cutting member connected to said cutting member axle and positioned at an end of said cutting member axle distal from said drive screw, said cutting member, when held in a predetermined position with respect to tissue to be resected, being operable to rotate and resect tissue to a predetermined depth in a substantially side-to-side manner upon rotation of said cutting member axle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 37, 38, 67)
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34. A working tool for a resectoscope for side-to-side resection of biological tissue using predetermined lateral movement, said working tool including a distal end which is inserted into a body cavity, a proximal end which is adjacent to a user, and a longitudinal axis, and wherein said tool includes:
- a rotation mechanism which includes;
a handle assembly located at said proximal end of said tool, which includes at least two handles, at least one of which is movable in the longitudinal direction of said tool;
and a drive screw in communication via a cam element with said handle assembly, said drive screw positioned along the longitudinal axis and rotatable there around upon a predetermined translation of said at least one movable handle, the translation transformed to a rotation by said cam element;
and at least one cutting member assembly positioned at said distal end of said tool, and each of said at least one assembly includes;
a cutting member axle connected by at least one connecting element to said drive screw, said cutting member axle thereby being rotatable upon rotation of said drive screw;
and at least one cutting member connected to said cutting member axle and positioned at an end of said cutting member axle distal from said drive screw, said cutting member being operable to rotate and resect tissue to a predetermined depth in a substantially side-to-side manner upon rotation of said cutting member axle;
and at least one vibrator in communication with said cutting member assembly, said vibrator producing vibrations in said cutting member assembly while said cutting member is rotating, thereby abetting resection of tissue in a substantially side-to-side manner.
- a rotation mechanism which includes;
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39. A cutting member assembly for resecting biological tissue wherein said assembly includes a cutting member axle and a cutting member affixed to said axle, said cutting member having a shape chosen from the following group of shapes:
- a concave shape, a triangular shape, a polygonal shape, an irregular shape, a saw-tooth shape, a V-shape, a square-like shape, a U-like shape, a grid-like shape and a rake-like shape.
- View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A method for lateral resection of biological tissue comprising:
- inserting the distal end of a working tool of a resectoscope into a body cavity and positioning at least one cutting member of the working tool adjacent to the biological tissue to be resected;
operating a handle assembly of the working tool, thereby imparting rotational motion to the at least one cutting member of the working tool;
and resecting said biological tissue to a predetermined depth by using the rotational motion of the cutting member for lateral side-to-side resection of the tissue. - View Dependent Claims (53, 54, 55, 56, 57)
- inserting the distal end of a working tool of a resectoscope into a body cavity and positioning at least one cutting member of the working tool adjacent to the biological tissue to be resected;
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58-66. -66. (canceled)
Specification