Ultrasonic surgical blade having transverse and longitudinal vibration

a technology of longitudinal vibration and surgical blade, applied in the field of ultrasonic surgical blade, can solve the problem that the blade is not considered useful beyond its effective cutting length, and achieve the effect of partial tissu

Inactive Publication Date: 2005-10-20
CILAG GMBH INT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about an ultrasonic-surgical blade that has a unique design that allows for both transverse and longitudinal ultrasonic vibration in the treatment portion of the blade. This results in a more uniform and larger amplitude of ultrasonic vibration over a longer distance of the blade from the distal tip. This design offers advantages for certain surgical applications and allows for a more precise tissue effect.

Problems solved by technology

The technical problem addressed in this patent text is to improve ultrasonic surgical blades by designing them to provide better longitudinal ultrasonic vibration along the blade, with a more uniform amplitude of at least 50% of the maximum amplitude at the distal tip of the blade, to enhance their effectiveness in cutting and coagulation of patient tissue.

Method used

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  • Ultrasonic surgical blade having transverse and longitudinal vibration
  • Ultrasonic surgical blade having transverse and longitudinal vibration
  • Ultrasonic surgical blade having transverse and longitudinal vibration

Examples

Experimental program
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first embodiment

[0016] Referring now to the Figures, FIG. 1 illustrates an ultrasonic surgical blade 10 of the invention. The ultrasonic surgical blade 10 includes an ultrasonic-surgical-blade body 12. The ultrasonic-surgical-blade body 12 has a longitudinal axis 14, a distal tip 16, a proximal end 18 adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node 20, a treatment portion 22 extending from the distal tip 16 toward the most-distal vibration node 20, and a functional asymmetry 24 which is asymmetric about the longitudinal axis 14 and which translates longitudinal ultrasonic vibrational movement of the proximal end 18 into a combination of a longitudinal ultrasonic vibration and a transverse ultrasonic vibration in at least some of the treatment portion 22 of the ultrasonic-surgical-blade body 12, wherein an amplitude of the transverse ultrasonic vibration at the distal tip 16 is less than substantially ten percent of a maximum amplitude of the tra...

second embodiment

[0022]FIG. 2 illustrates the invention. A first expression of the embodiment of FIG. 2 is for an ultrasonic surgical blade 30 having an ultrasonic-surgical-blade body 32. The ultrasonic-surgical-blade body 32 has a distal tip 34, a proximal end 36 adapted for longitudinal ultrasonic vibrational excitation, a most-distal longitudinal vibration node 38, a second-most-distal longitudinal vibration node 40, a treatment portion 42 extending from the distal tip 34 toward the second most-distal vibration node 40, at least one functional asymmetry 44, and at least one balance asymmetry 46. The at-least-one functional asymmetry 44 and the at-least-one balance asymmetry 46 create a balance point 48. Longitudinal ultrasonic vibrational movement of the proximal end 36 creates ultrasonic vibration of the ultrasonic-surgical-blade body 32 which is substantially purely longitudinal ultrasonic vibration proximal the balance point 48 and which is a combination of longitudinal and transverse ultrason...

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Abstract

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.

Description

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Claims

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Application Information

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Owner CILAG GMBH INT
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