Surgical instrument
First Claim
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1. A surgical instrument for crushing and severing material from an object comprising:
- first and second elongated members, one of said members being tubular with an open end and having a cutting surface formed at least partially around said open end thereof,said first and second members being telescopically mounted relative to each other,the other of said members having a gripping implement thereon which is shaped with a hook having an end which terminates in an acute angle for gripping the material of the object, the face of said gripping implement opposing said cutting surface having a portion which opposes and overlies a portion of said cutting surface so that the two can be brought into an abutting relationship without moving said gripping implement into the open end of said one member,means for moving said first and second members longitudinally relative to each other so that the gripping element moves the material against the cutting surface to crush the material against said cutting surface and to sever it with at least a part of the severed material being moved into said open end of said one member.
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Abstract
A surgical instrument for removing objects from the body of a human or animal in vitro in which a hook type implement is utilized to grasp a portion of the object to be removed and to bring it into a relationship with a cutting surface of another portion of the instrument to provide a combined crushing and cutting action. In the preferred embodiment of the invention, suction pressure and irrigation fluid is supplied through the instrument with the cut material being removed from the area by the suction pressure.
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Citations
20 Claims
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1. A surgical instrument for crushing and severing material from an object comprising:
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first and second elongated members, one of said members being tubular with an open end and having a cutting surface formed at least partially around said open end thereof, said first and second members being telescopically mounted relative to each other, the other of said members having a gripping implement thereon which is shaped with a hook having an end which terminates in an acute angle for gripping the material of the object, the face of said gripping implement opposing said cutting surface having a portion which opposes and overlies a portion of said cutting surface so that the two can be brought into an abutting relationship without moving said gripping implement into the open end of said one member, means for moving said first and second members longitudinally relative to each other so that the gripping element moves the material against the cutting surface to crush the material against said cutting surface and to sever it with at least a part of the severed material being moved into said open end of said one member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A surgical instrument for crushing and severing material from an object comprising:
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first and second elongated members, one of said members having an open end and having a cutting surface formed at least partially around said open end thereof, the other of said members having a hook shaped gripping implement thereon for gripping the material of the object, said first and second members being tubular and coaxially and telescopically mounted relative to each other with the other member on the outside so that said implement extends forwardly of said one member, the face of said gripping implement opposing said cutting surface having a portion which at least partially overlies said cutting surface but always leaving a part of the open end of said one member open, and means for moving said first and second members longitudinally relative to each other so that the gripping element moves the material against the cutting surface to crush the material against said cutting surface and to sever it with at least a part of the severed material being moved into said open end of said one member. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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20. A surgical instrument for crushing and severing material from an object comprising:
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first and second elonated members, one of said members being tubular with an open end and having a cutting surface formed at least partially around said open end thereof at an angle of less than 90°
with respect to the longitudinal axis of said one member,said first and second members being telescopically mounted relative to each other, the other of said members having a gripping implement thereon for gripping the material of the object, the face of said gripping implement opposing said cutting surface being generally parallel to said cutting surface and having a portion which overlies a portion of said cutting surface, means for moving said first and second members longitudinally relative to each other so that the gripping element moves the material against the cutting surface to crush the material against said cutting surface and to sever it with at least a part of the severed material being moved into said open end of said one member.
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Specification