Ultrasonic surgical instrument with cooling system
First Claim
Patent Images
1. An ultrasonic surgical instrument, comprising:
- a handle assembly;
an outer tube extending distally from the handle assembly, the outer tube defining a first passage along a longitudinal axis;
a middle tube positioned along the longitudinal axis coaxial with the outer tube within the first passage, the middle tube defining a second passage;
a waveguide positioned along the longitudinal axis within the second passage of the middle tube;
a blade supported by a distal end of the waveguide and configured to oscillate with respect to the middle and outer tubes to ultrasonically treat tissue; and
a blade cooling system including a blade conduit extending at least partially through the blade, the blade conduit including;
a blade inlet defined in a proximal portion of the blade and disposed in fluid communication with the second passage to receive a fluid from the second passage;
a blade outlet defined in the proximal portion of the blade and in fluid communication with the first passage to expel the fluid into the first passage;
a first segment defined and extending distally within the blade from the blade inlet to a distal portion of the blade; and
a second segment defined within the blade and disposed in fluid communication with the first segment, and extending proximally from a distal portion of the blade to the blade outlet.
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Accused Products
Abstract
An ultrasonic surgical instrument includes a cooling system having a blade conduit disposed within the blade and a cooling fluid. The cooling fluid configured to absorb heat from the blade as the cooling fluid flows through the blade conduit. A surgical system having an ultrasonic surgical instrument and a cooling system is also disclosed. The cooling system can include a fluid control system that automatically pumps a cooling fluid through a blade conduit disposed within the blade of the surgical instrument based on feedback received from sensors.
99 Citations
20 Claims
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1. An ultrasonic surgical instrument, comprising:
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a handle assembly; an outer tube extending distally from the handle assembly, the outer tube defining a first passage along a longitudinal axis; a middle tube positioned along the longitudinal axis coaxial with the outer tube within the first passage, the middle tube defining a second passage; a waveguide positioned along the longitudinal axis within the second passage of the middle tube; a blade supported by a distal end of the waveguide and configured to oscillate with respect to the middle and outer tubes to ultrasonically treat tissue; and a blade cooling system including a blade conduit extending at least partially through the blade, the blade conduit including; a blade inlet defined in a proximal portion of the blade and disposed in fluid communication with the second passage to receive a fluid from the second passage; a blade outlet defined in the proximal portion of the blade and in fluid communication with the first passage to expel the fluid into the first passage; a first segment defined and extending distally within the blade from the blade inlet to a distal portion of the blade; and a second segment defined within the blade and disposed in fluid communication with the first segment, and extending proximally from a distal portion of the blade to the blade outlet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A surgical system, comprising:
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an ultrasonic instrument including; a handle assembly; an outer tube extending distally from the handle assembly, the outer tube defining a first passage along a longitudinal axis; a middle tube positioned along the longitudinal axis coaxial with the outer tube within the first passage, the middle tube defining a second passage; a waveguide positioned along the longitudinal axis within the second passage of the middle tube; a blade supported by a distal portion of the waveguide and configured to oscillate with respect to the middle and outer tubes to ultrasonically treat tissue; a blade cooling system including a blade conduit extending at least partially through the blade, the blade conduit including; a blade inlet defined in a proximal portion of the blade and disposed in fluid communication with the second passage to receive a fluid from the second passage; a blade outlet defined in the proximal portion of the blade such that the blade outlet is positioned beyond a distal end of the waveguide and in fluid communication with the first passage to expel fluid into the first passage; a first segment defined and extending distally within the blade from the blade inlet to a distal portion of the blade; and a second segment defined within the blade and disposed in fluid communication with the first segment and extending proximally from a distal portion of the blade to the blade outlet; and a fluid control system including a pump configured to pump a cooling fluid through the blade conduit. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An ultrasonic surgical instrument, comprising:
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a handle assembly; an outer tube extending distally from the handle assembly, the outer tube defining a first passage along a longitudinal axis; a middle tube positioned along the longitudinal axis coaxial with the outer tube within the first passage, the middle tube defining a second passage; a waveguide positioned along the longitudinal axis within the second passage of the middle tube; a blade supported by a distal portion of the waveguide and configured to oscillate with respect to the middle and outer tubes to ultrasonically treat tissue; and a closed loop blade cooling system including a blade conduit extending at least partially through the blade, the blade conduit including; a blade inlet defined in a proximal portion of the blade and disposed in fluid communication with the second passage to receive a fluid from the second passage; a blade outlet defined in the proximal portion of the blade and in fluid communication with the first passage to expel the fluid into the first passage; a first segment defined and extending distally within the blade from the blade inlet to a distal portion of the blade; and a second segment defined within the blade and disposed in fluid communication with the first segment, and extending proximally from a distal portion of the blade to the blade outlet.
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Specification