Disposable battery powered rotary tissue cutting instruments and methods therefor
First Claim
1. A disposable battery powered rotary tissue cutting instrument for soft tissue removal comprising a blade comprising an elongate tubular outer member and an elongate tubular inner member rotatably disposed within said outer member, said outer member extending distally from an outer member hub to a distal end having a side-facing opening, said outer member having a cutting edge extending along a peripheral edge of said opening, said inner member extending distally from an inner member hub to a distal end having a side-facing opening adjacent said opening in said outer member, said inner member including a cutting edge extending along a peripheral edge of said opening in said inner member and cooperable with said cutting edge of said outer member to cut soft anatomical tissue adjacent said opening in said outer member when said inner member is rotated relative to and within said outer member;
- and a powered surgical handpiece comprising a housing fixedly mounting said outer member hub and rotatably mounting said inner member hub, a motor within said housing for rotating said inner member, a battery unit within said housing for powering said motor, and a control unit disposed along an external surface of said housing for controlling operation of said motor, said motor having a drive shaft in driving engagement with said inner member hub, said battery unit including at least one battery electrically connected with said motor, said control unit being electrically connected with said battery unit and being operable to selectively allow electric current to flow from said at least one battery to said motor to start and stop rotation of said drive shaft, said instrument being disposable upon completion of a surgical procedure performed with said instrument on a single patient.
1 Assignment
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Accused Products
Abstract
A disposable battery powered rotary tissue cutting instrument for soft tissue removal includes a blade attached to a powered surgical handpiece. The blade comprises an elongate tubular outer member and an inner member rotatably disposed within the outer member to cut anatomical tissue. The handpiece contains a motor having a drive shaft coupled in driving engagement with the inner member and a battery unit for supplying electric current to rotate the drive shaft to effect rotation of the inner member within the outer member. The inner member is continuously rotated in one direction or is continuously oscillatorily rotated in forward and reverse directions. The instrument is disposable after single patient use and may include a use-limiting unit for automatically disabling the instrument to prevent its reuse after completion of a surgical procedure performed using the instrument on a single patient. The blade may be used for electric cautery.
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Citations
61 Claims
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1. A disposable battery powered rotary tissue cutting instrument for soft tissue removal comprising
a blade comprising an elongate tubular outer member and an elongate tubular inner member rotatably disposed within said outer member, said outer member extending distally from an outer member hub to a distal end having a side-facing opening, said outer member having a cutting edge extending along a peripheral edge of said opening, said inner member extending distally from an inner member hub to a distal end having a side-facing opening adjacent said opening in said outer member, said inner member including a cutting edge extending along a peripheral edge of said opening in said inner member and cooperable with said cutting edge of said outer member to cut soft anatomical tissue adjacent said opening in said outer member when said inner member is rotated relative to and within said outer member; - and
a powered surgical handpiece comprising a housing fixedly mounting said outer member hub and rotatably mounting said inner member hub, a motor within said housing for rotating said inner member, a battery unit within said housing for powering said motor, and a control unit disposed along an external surface of said housing for controlling operation of said motor, said motor having a drive shaft in driving engagement with said inner member hub, said battery unit including at least one battery electrically connected with said motor, said control unit being electrically connected with said battery unit and being operable to selectively allow electric current to flow from said at least one battery to said motor to start and stop rotation of said drive shaft, said instrument being disposable upon completion of a surgical procedure performed with said instrument on a single patient. - 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)
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30. A disposable battery powered rotary tissue cutting instrument for removal of anatomical tissue comprising
a blade comprising an elongate tubular outer member and an elongate inner member rotatably disposed within said outer member, said outer member extending distally from a proximal end to a distal end having an opening, said inner member extending distally from a proximal end to a distal end having a cutting edge exposed by said opening for cutting anatomical tissue when said inner member is rotated within said outer member; - and
a powered surgical handpiece comprising a housing fixedly mounting said proximal end of said outer member and rotatably mounting said proximal end of said inner member, a motor disposed within said housing and having a drive shaft coupled in driving engagement with said proximal end of said inner member, a battery unit in said housing for supplying electric current to said motor to rotate said drive shaft, and a use-limiting unit in said housing for automatically preventing the electric current from being supplied to said motor after a predetermined amount of use of said instrument, whereby said instrument is automatically disabled subsequent to a surgical procedure performed with said instrument on a single patient. - View Dependent Claims (31, 32)
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33. A disposable battery powered rotary tissue cutting instrument for removal of anatomical tissue comprising
a blade comprising an elongate tubular outer member and an elongate inner member rotatably disposed within said outer member, said outer member extending distally from a proximal end to a distal end having an opening, said inner member extending distally from a proximal end to a distal end having a cutting edge exposed by said opening for cutting anatomical tissue when said inner member is rotated within said outer member; - and
a powered surgical handpiece comprising a housing fixedly mounting said proximal end of said outer member and rotatably mounting said proximal end of said inner member, a motor disposed within said housing and having a drive shaft coupled in driving engagement with said proximal end of said inner member, a battery unit in said housing for supplying electric current to said motor to rotate said drive shaft, and a pulse generator in said housing for supplying the electric current from said battery unit to said motor in timed pulses to rotate said drive shaft continuously oscillatorily in forward and rearward directions, said instrument being disposable upon completion of a surgical procedure performed with said instrument on a single patient. - View Dependent Claims (34, 35)
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36. A method of performing a surgical procedure on a patient comprising the steps of
grasping a surgical handpiece of a sterile rotary tissue cutting instrument comprising an elongate tubular outer member extending distally from a proximal end fixedly mounted to the handpiece and an elongate inner member rotatably disposed in the outer member and extending distally from a proximal end coupled in driving engagement with a drive shaft of a motor disposed in the handpiece; -
positioning a distal end of the outer member at an operative site in the patient'"'"'s body such that an opening in the distal end of the outer member is positioned adjacent anatomical tissue to be removed;
causing electric current to flow to the motor from a battery unit within the handpiece;
continuously rotating the drive shaft to rotate the inner member relative to and within the outer member in response to the flow of electric current to the motor;
cutting the anatomical tissue adjacent the opening with a cutting edge of the inner member that is exposed from the opening as the inner member is continuously rotated within the outer member;
terminating the flow of electric current from the battery to the motor;
stopping rotation of the drive shaft to stop rotation of the inner member in response to the termination of electric current flow to the motor;
withdrawing the instrument from the patient'"'"'s body; and
automatically disabling the instrument subsequent to completion of the surgical procedure on the patient such that the instrument cannot be reused. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A method of performing a surgical procedure on a patient including an adenoidectomy comprising the steps of
introducing a distal end of a blade of a rotary tissue cutting instrument in the patient'"'"'s nasopharynx, the blade comprising an elongate tubular outer member and an elongate tubular inner member rotatably disposed in the outer member, the outer member having a proximal end fixedly secured to a powered surgical handpiece of the rotary tissue cutting instrument, a distal end having a side-facing opening, and a cutting edge extending along a peripheral edge of the opening, the inner member having a proximal end coupled with a drive shaft of a motor disposed in the handpiece, a distal end with a side-facing opening adjacent the opening in the outer member and a cutting edge extending along a peripheral edge of the opening in the inner member; -
positioning the opening in the outer member adjacent an adenoid;
causing electric current to flow to the motor from a battery unit within the handpiece;
continuously rotating the drive shaft to rotate the inner member relative to and within the outer member in response to the flow of electric current to the motor;
cutting anatomical tissue of the adenoid as the cutting edge of the inner member moves past the cutting edge of the outer member as the inner member is rotated within the outer member;
terminating the flow of electric current from the battery unit to the motor;
stopping rotation of the drive shaft to stop rotation of the inner member in response to the termination of electric current flow to the motor;
withdrawing the blade from the nasopharynx; and
disposing of the instrument upon completion of the surgical procedure on the patient. - View Dependent Claims (47, 48, 49, 50, 51, 52, 53, 54)
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55. A method of performing a surgical procedure on a patient including a tonsillectomy comprising the steps of
introducing a distal end of a blade of a rotary tissue cutting instrument in the patient'"'"'s mouth, the blade comprising an elongate tubular outer member and an elongate tubular inner member rotatably disposed in the outer member, the outer member having a proximal end fixedly secured to a powered surgical handpiece of the rotary tissue cutting instrument, a distal end having a side-facing opening, and a cutting edge extending along a peripheral edge of the opening, the inner member having a proximal end coupled with a drive shaft of a motor disposed in the handpiece, a distal end with a side-facing opening adjacent the opening in the outer member and a cutting edge along a peripheral edge of the opening in the inner member; -
positioning the opening in the outer member adjacent a tonsil;
causing electric current to flow to the motor from a battery unit within the handpiece;
continuously rotating the drive shaft to rotate the inner member relative to and within the outer member in response to the flow of electric current to the motor;
cutting anatomical tissue of the tonsil as the cutting edge of the inner member moves past the cutting edge of the outer member as the inner member is rotated within the outer member;
terminating the flow of electric current from the battery unit to the motor;
stopping rotation of the drive shaft to stop rotation of the inner member in response to the termination of electric current flow to the motor;
withdrawing the blade from the patient'"'"'s mouth; and
disposing of the instrument upon completion of the surgical procedure on the patient. - View Dependent Claims (56, 57, 58, 59, 60, 61)
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Specification