摘要:
A balanced ultrasonic surgical instrument according to the present invention includes an ultrasonic transmission rod which is connected to a blade or end effector by a balance portion, which includes first and second balance asymmetries designed to compensate for the imbalances induced by the blade.
摘要:
A balanced ultrasonic surgical instrument is described wherein the balanced ultrasonic surgical instrument includes an ultrasonic transmission rod and an ultrasonically actuated blade attached to the distal end of the ultrasonic transmission rod. According to the present invention, the ultrasonically actuated blade includes a treatment portion and a balance portion. The treatment portion has a functional feature such as, for example, a curved blade which makes the treatment portion asymrnetric. The balance portion includes at least first and second asymmetric balance features designed and positioned to balance out any undesirable torque generated by the treatment portion. The balance portion further extends generally from a node point on the ultrasonic transmission rod to the proximal end of the treatment portion.
摘要:
An ultrasonic surgical blade includes an ultrasonic-surgical-blade body having a longitudinal axis, a distal tip, a proximal end adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node, a treatment portion extending from the distal tip toward the most-distal longitudinal vibration node, and a functional asymmetry. The functional asymmetry is asymmetric about the longitudinal axis and translates longitudinal ultrasonic vibrational movement of the proximal end into a combination of a longitudinal ultrasonic vibration and a transverse ultrasonic vibration in at least some of the treatment portion of the ultrasonic-surgical-blade body. An amplitude of the transverse ultrasonic vibration at the distal tip is less than substantially ten percent of a maximum amplitude of the transverse ultrasonic vibration of the treatment portion of the ultrasonic-surgical-blade body. An alternate embodiment of the ultrasonic surgical blade includes at least one functional asymmetry and at least one balance asymmetry.
摘要:
A laminated ultrasonic waveguide and a method of fabrication thereof which comprises stamping at least two pieces of sheet stock to form stamped parts of the laminated ultrasonic waveguide. The stamped parts are then laminated together to form a laminated ultrasonic waveguide for transferring ultrasonic acoustic energy along a longitudinal axis of the laminated ultrasonic waveguide. In several disclosed embodiments, the laminated ultrasonic waveguide is part of an ultrasonic surgical instrument having an active tip end-effector which is placed in contact with tissue of a patient to couple ultrasonic energy transferred along the laminated ultrasonic waveguide to the tissue. The stamped pieces of sheet stock can also be stamped to form one or more channels extending along the length of the laminated ultrasonic waveguide. The laminated ultrasonic waveguide can also define a connector at a proximal end thereof to transfer ultrasonic energy into the laminated ultrasonic waveguide. In different embodiments, the laminated ultrasonic waveguide comprises first and second (and third or more) stamped pieces of sheet stock which are laminated together.
摘要:
A connection union and method for securing together first and second components of an ultrasonic waveguide or blade. The first and second components of the ultrasonic waveguide or blade are formed as complementary components which engage each other with a complementary fitting. Then a compressed fit over the connection union is formed by an electromagnetic metal forming operation which compressively deforms a female coupling member over the connection union. The female coupling member can comprise a separate sleeve which is compressed over the connection union by the electromagnetic metal forming operation. Alternatively, the female coupling member can comprise a terminal end of one of the first and second components which includes a longitudinally extending recess which forms an outer circumferentially extending sleeve which is compressed over the connection union by the electromagnetic metal forming operation. In several embodiments, the first and second components are butted together, and each butted end of the first and second components includes at least one circumferentially extending ridge, around which the female coupling member is deformed during the electromagnetic metal forming operation to form an undercut in the female coupling member. In disclosed embodiments, the first component comprises the shaft of an ultrasonic waveguide or blade and the second component comprises a distal tip end of the ultrasonic waveguide such as an end-effector.
摘要:
An ultrasonic surgical blade includes an ultrasonic-surgical-blade body having a longitudinal axis, a distal tip, a proximal end adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node, a treatment portion extending from the distal tip toward the most-distal longitudinal vibration node, and a functional asymmetry. The functional asymmetry is asymmetric about the longitudinal axis and translates longitudinal ultrasonic vibrational movement of the proximal end into a combination of a longitudinal ultrasonic vibration and a transverse ultrasonic vibration in at least some of the treatment portion of the ultrasonic-surgical-blade body. An amplitude of the transverse ultrasonic vibration at the distal tip is less than substantially ten percent of a maximum amplitude of the transverse ultrasonic vibration of the treatment portion of the ultrasonic-surgical-blade body. An alternate embodiment of the ultrasonic surgical blade includes at least one functional asymmetry and at least one balance asymmetry.
摘要:
A curved ultrasonic waveguide, as used in an ultrasonic surgical instrument, includes two curved half-wave sections, having similar vibratory motion at their respective distal tips, which are integrally or compressively joined at the distal tips to create a single waveguide with a sharper bend radius than is conventionally possible. The resulting waveguide does not produce parasitic motion or generate excessive heat at the input or output portions of the waveguide.
摘要:
A balanced ultrasonic surgical instrument is described wherein the balanced ultrasonic surgical instrument includes an ultrasonic transmission rod and an ultrasonically actuated blade attached to the distal end of the ultrasonic transmission rod. According to the present invention, the ultrasonically actuated blade includes a treatment portion and a balance portion. The treatment portion has a functional feature such as, for example, a curved blade which makes the treatment portion asymmetric. The balance portion includes at least first and second asymmetric balance features designed and positioned to balance out any undesirable torque generated by the treatment portion. The balance portion further extends generally from a node point on the ultrasonic transmission rod to the proximal end of the treatment portion.
摘要:
A method of manufacturing high power sandwich type ultrasonic transducers and, more particularly, a new method of tuning high power sandwich type ultrasonic transducers without the need for a trimming process. A method in accordance with the present invention includes the steps of assembling a sandwich type ultrasonic transducer, measuring the resonant frequency of the ultrasonic transducer, and selecting from a plurality of tuning elements, whereby a dimension or material property of a selected tuning element alters the measured resonant frequency of the ultrasonic transducer to a desired resonant frequency after the tuning element is attached to the ultrasonic transducer.
摘要:
A balanced ultrasonic surgical instrument according to the present invention includes an ultrasonic transmission rod which is connected to a blade or end effector by a balance portion, which includes first and second balance asymmetries designed to compensate for the imbalances induced by the blade.