GB2425480A - Ultrasonic surgical tool having retro-facing cutting edge - Google Patents

Ultrasonic surgical tool having retro-facing cutting edge Download PDF

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Publication number
GB2425480A
GB2425480A GB0508505A GB0508505A GB2425480A GB 2425480 A GB2425480 A GB 2425480A GB 0508505 A GB0508505 A GB 0508505A GB 0508505 A GB0508505 A GB 0508505A GB 2425480 A GB2425480 A GB 2425480A
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United Kingdom
Prior art keywords
waveguide
output
longitudinal axis
degrees
angle
Prior art date
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Granted
Application number
GB0508505A
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GB2425480B (en
GB0508505D0 (en
Inventor
Michael John Radley Young
Stephen Michael Radley Young
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SRA Developments Ltd
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SRA Developments Ltd
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Priority to GB0508505A priority Critical patent/GB2425480B/en
Publication of GB0508505D0 publication Critical patent/GB0508505D0/en
Publication of GB2425480A publication Critical patent/GB2425480A/en
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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320069Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic for ablating tissue
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072Working tips with special features, e.g. extending parts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32Surgical cutting instruments
    • A61B17/320068Surgical cutting instruments using mechanical vibrations, e.g. ultrasonic
    • A61B2017/320072Working tips with special features, e.g. extending parts
    • A61B2017/320074Working tips with special features, e.g. extending parts blade

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Mechanical Engineering (AREA)
  • Biomedical Technology (AREA)
  • Dentistry (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

An output for an ultrasonic surgical tool vibratable in torsional mode comprises a generally cylindrical waveguide 1 provided with a radially extending protrusion 3 having two grooves 6 which converge to define at their intersection a retro-facing cutting edge 7. Each groove is part cylindrical, and the two grooves may be aligned to converge at an angle, with respect to a longitudinal axis of the waveguide, of 7 to 15 degrees. The grooves may be aligned to diverge in a proximal direction from the longitudinal axis of the waveguide by 11.5 to 20 degrees. The radial extremity 4 of the tool may be used to subject tissue to high amplitude compression waves for welding and/or ablation.

Description

1 2425480 IMPROVED ULTRASONIC SURGiCAL TOOL The present invention relates
to an improved waveguide output for torsionally vibratable ultrasonic surgical tools, particularly but not exclusively, such as are known from British :.:. Patent number 2333709B. * S **** *.SS
* * The above patent describes a surgical tool comprising means to generate ultrasonic torsional *** mode vibrations, a waveguide operatively connected at a proximal end to the generating S..
: . means and extending a distance therefrom of fl2T'2 (where ?T is the wavelength of ultrasonic vibration in the material of the waveguide) to a distal end provided with an output.
Surgical tools having outputs purely for cutting purposes have been described in our British Patent No. 2365775B. However, these are not always easy to use and are not adapted to carry out welding and/or ablation procedures.
It has now been found that further improvements in the configurations of the output of such tools may be made.
It is an object of the present invention to provide an improved waveguide output for such a tool.
According to a first aspect of the present invention there is provided an output means for use with an ultrasonic surgical tool vibratable in torsional mode, said output comprising a generally cylindrical waveguide provided at a distal end with a radially extending protrusion having two groove means so converging in a proximal direction as to define at their intersection a retro- facing cutting edge.
Preferably each said groove means is part cylindrical. * S. * S S S.. S *. .. * S
* .. S The two groove means may each be aligned to converge at an angle, with respect to a S...
: longitudinal axis of the waveguide, of less than 15 degrees. S.. S..
Ideally, the two groove means may each be aligned to converge at an angle, with respect to a longitudinal axis of the waveguide, of less than 10 degrees.
In a preferred embodiment, the two groove means may each be aligned to converge at an angle, with respect to a longitudinal axis of the waveguide, in the region of 7 degrees.
In any event, both said groove means may diverge in a proximal direction from the longitudinal axis of the waveguide by an angle less than 20 degrees.
Preferably, both said groove means may diverge in a proximal direction from the longitudinal axis of the waveguide by an angle less than 15 degrees.
Optionally, both said groove means may diverge in a proximal direction from the longitudinal axis of the waveguide by an angle in the region of 11.5 degrees.
According to a second aspect of the present invention, there is provided a surgical tool comprising means to generate torsional mode ultrasonic vibrations, and a waveguide output as described above operatively connected thereto.
An embodiment of the present invention will now be more particularly described by way of example and with reference to the accompanying drawings, in which:- * : * Figure 1 is a side elevation of a hook-type output; I..
Figure 2 is an end view of the output shown in Figure 1; and S...
: Figure 3 is a view from below of the output. S.
S * S*
A torsional mode vibration provides concentric motion about the axis of the waveguide.
* Sections of the blade non-parallel with the motion provide vibrating faces capable of imparting energy directly into tissue brought to bear on such a face rather than cause friction as in conventional, parallel motion devices.
The greater the distance of a point from the longitudinal axis, the greater will be the amplitude of the vibration.
Referring now to the drawings, Figure 1 is a side elevation of a "hooktype" output at a distal end of a waveguide 1, torsionally vibratable about its longitudinal axis 2.
A single asymmetric extension 3 projects radially outwardly at a distal end from this generally cylindrical waveguide 1 and is able to generate high angular vibrational displacements at its radial extremity 4. The waveguide and the radial extension 3 are machined at their distal end to have a smoothly rounded nose 5 which continues around to the radial extremity 4 of the extension 3.
Two part cylindrical grooves 6 are milled or otherwise formed in the extension 3, and extend along lines which converge in a proximal direction, each at an angle in the region of 7 from the longitudinal axis 2 of the waveguide 1 so as to form a cutting edge 7 at their convergence.
*: :* Since the part cylindrical grooves 6 converge at an angle in the region of 7 with respect to * * the longitudinal axis 2, they will define at the edge 7 an included angle of 14 . In the normal S...
* SI direction, both part cylindrical grooves 6 diverge in a proximal direction from the I..
longitudinal axis by an angle in the region of 11.5 . S.. * * S S. S *. I * S I S **
Figure 2 shows an end elevation of the hook shaped output from the distal end, illustrating the angled grooves 6 extending beyond the curved surface 5 of the tool. These features are illustrated thore fully in Figure 3, the view from below.
Use of the output offers several critical features.
Firstly there is a high rotational displacement at the extremity 4 radially distant from the axis of vibration about axis 2, giving vibrations of increased amplitude. * 5
* Secondly, a sharp blade 7 is formed which can be used by retro-action of the waveguide for cutting tissue by pulling the hook backwardly having engaged the tissue in close proximity with the cutting edge 7.
The thickness of the web 8 formed between the hook extremity 4 and main axial body I of the waveguide represents a region of maximum displacement due to its cross section variation, having a minimum thickness along thc cutting edge 7, and greater thicknesses towards the generally cylindrical waveguide 1 and towards the radial extremity 4.
Welding and/or ablation of tissue or blood vessels may be achieved by turning the tool and *: * pressing the transverse face of the radial extremity 4 onto the target tissue so subjecting it to S... * * *
high amplitude compression waves. *5*S * S... * S..
S S.. * S S
S S
SS S * * S S 55

Claims (9)

1. An output means for use with an ultrasonic surgical tool vibratable in torsional mode, said output comprising a generally cylindrical waveguide provided at a distal end with a radially extending protrusion having two groove means so converging in a proximal direction as to define at their intersection a retro- facing cutting edge.
2. An output as claimed in claim 1, wherein each said groove means is part cylindrical.
3. An output as claimed in either claim I or claim 2, wherein two groove means may each be aligned to converge at an angle, with respect to a longitudinal axis of the waveguide, of less than 15 degrees.
4. An output as claimed in claim 3, wherein the two groove means one each aligned to converge at an angle, with respect to a longitudinal axis of the waveguide, of less than degrees.
5. An output as claimed in claim 4, wherein the two groove means are each aligned to converge at an angle, with respect to a longitudinal axis of the waveguide, in the region of 7 degrees.
6. An output as claimed in either claim I or claim 2, wherein said groove means diverge in a proximal direction from the longitudinal axis of the waveguide by an angle less than 20 degrees.
7. An output as claimed in claim 6, wherein said groove means diverge in a proximal direction from the longitudinal axis of the waveguide by an angle less than 15 degrees.
8. An output as claimed in claim 7, wherein said groove means diverge in a proximal direction from the longitudinal axis of the waveguide by an angle in the region of 11.5 degrees.
9. An output for a surgical tool comprising means to generate torsional mode ultrasonic vibrations, and a waveguide output and as claimed in any one of the preceding claims operatively connected thereto.
GB0508505A 2005-04-27 2005-04-27 Improved ultrasonic surgical tool Active GB2425480B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0508505A GB2425480B (en) 2005-04-27 2005-04-27 Improved ultrasonic surgical tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0508505A GB2425480B (en) 2005-04-27 2005-04-27 Improved ultrasonic surgical tool

Publications (3)

Publication Number Publication Date
GB0508505D0 GB0508505D0 (en) 2005-06-01
GB2425480A true GB2425480A (en) 2006-11-01
GB2425480B GB2425480B (en) 2010-04-21

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GB (1) GB2425480B (en)

Cited By (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2442137A (en) * 2006-09-19 2008-03-26 Sra Dev Ltd Twin bladed ultrasonic surgical tool head
US8242398B2 (en) 2007-06-11 2012-08-14 Sra Developments Limited Switch for ultrasonic surgical tool
US8668710B2 (en) 2008-05-21 2014-03-11 Sra Developments Limited Ultrasonic tissue dissector
CN104066389A (en) * 2011-10-07 2014-09-24 米松尼克斯股份有限公司 Ultrasonic osteotome
US9173672B2 (en) 2006-05-31 2015-11-03 Sra Developments Limited Ultrasonic surgical tool
US9387004B2 (en) 2005-03-03 2016-07-12 Sra Developments Limited Ultrasonic cutting tool
WO2017004366A3 (en) * 2015-07-01 2017-02-16 Ethicon Endo-Surgery, Llc Ultrasonic surgical blade with improved cutting and coagulation features
US10226273B2 (en) 2013-03-14 2019-03-12 Ethicon Llc Mechanical fasteners for use with surgical energy devices
US10245064B2 (en) 2016-07-12 2019-04-02 Ethicon Llc Ultrasonic surgical instrument with piezoelectric central lumen transducer
US10245065B2 (en) 2007-11-30 2019-04-02 Ethicon Llc Ultrasonic surgical blades
USD847990S1 (en) 2016-08-16 2019-05-07 Ethicon Llc Surgical instrument
US10285723B2 (en) 2016-08-09 2019-05-14 Ethicon Llc Ultrasonic surgical blade with improved heel portion
US10357303B2 (en) 2015-06-30 2019-07-23 Ethicon Llc Translatable outer tube for sealing using shielded lap chole dissector
US10398466B2 (en) 2007-07-27 2019-09-03 Ethicon Llc Ultrasonic end effectors with increased active length
US10420579B2 (en) 2007-07-31 2019-09-24 Ethicon Llc Surgical instruments
US10420580B2 (en) 2016-08-25 2019-09-24 Ethicon Llc Ultrasonic transducer for surgical instrument
US10426507B2 (en) 2007-07-31 2019-10-01 Ethicon Llc Ultrasonic surgical instruments
US10441308B2 (en) 2007-11-30 2019-10-15 Ethicon Llc Ultrasonic surgical instrument blades
US10531910B2 (en) 2007-07-27 2020-01-14 Ethicon Llc Surgical instruments
US10537352B2 (en) 2004-10-08 2020-01-21 Ethicon Llc Tissue pads for use with surgical instruments
US10603064B2 (en) 2016-11-28 2020-03-31 Ethicon Llc Ultrasonic transducer
US10709906B2 (en) 2009-05-20 2020-07-14 Ethicon Llc Coupling arrangements and methods for attaching tools to ultrasonic surgical instruments
US10722261B2 (en) 2007-03-22 2020-07-28 Ethicon Llc Surgical instruments
US10779848B2 (en) 2006-01-20 2020-09-22 Ethicon Llc Ultrasound medical instrument having a medical ultrasonic blade
US10820920B2 (en) 2017-07-05 2020-11-03 Ethicon Llc Reusable ultrasonic medical devices and methods of their use
US10828057B2 (en) 2007-03-22 2020-11-10 Ethicon Llc Ultrasonic surgical instruments
US10828059B2 (en) 2007-10-05 2020-11-10 Ethicon Llc Ergonomic surgical instruments
US10835768B2 (en) 2010-02-11 2020-11-17 Ethicon Llc Dual purpose surgical instrument for cutting and coagulating tissue
US10842522B2 (en) 2016-07-15 2020-11-24 Ethicon Llc Ultrasonic surgical instruments having offset blades
US10842580B2 (en) 2012-06-29 2020-11-24 Ethicon Llc Ultrasonic surgical instruments with control mechanisms
US10856896B2 (en) 2005-10-14 2020-12-08 Ethicon Llc Ultrasonic device for cutting and coagulating
US10874418B2 (en) 2004-02-27 2020-12-29 Ethicon Llc Ultrasonic surgical shears and method for sealing a blood vessel using same
US10893883B2 (en) 2016-07-13 2021-01-19 Ethicon Llc Ultrasonic assembly for use with ultrasonic surgical instruments
US10952759B2 (en) 2016-08-25 2021-03-23 Ethicon Llc Tissue loading of a surgical instrument
US11020140B2 (en) 2015-06-17 2021-06-01 Cilag Gmbh International Ultrasonic surgical blade for use with ultrasonic surgical instruments
US11033292B2 (en) 2013-12-16 2021-06-15 Cilag Gmbh International Medical device
US11058447B2 (en) 2007-07-31 2021-07-13 Cilag Gmbh International Temperature controlled ultrasonic surgical instruments
US11369402B2 (en) 2010-02-11 2022-06-28 Cilag Gmbh International Control systems for ultrasonically powered surgical instruments

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5324299A (en) * 1992-02-03 1994-06-28 Ultracision, Inc. Ultrasonic scalpel blade and methods of application
US6254622B1 (en) * 1996-02-20 2001-07-03 Larry Hood Blade for ultrasonically assisted cutting and hemostasis
GB2365775A (en) * 1999-04-21 2002-02-27 Michael John Radley Young Waveguide output for a torsionally vibratable ultrasonic cutting/coagulating tool having a proximally facing hook shaped or re-entrant cutting edge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5324299A (en) * 1992-02-03 1994-06-28 Ultracision, Inc. Ultrasonic scalpel blade and methods of application
US6254622B1 (en) * 1996-02-20 2001-07-03 Larry Hood Blade for ultrasonically assisted cutting and hemostasis
GB2365775A (en) * 1999-04-21 2002-02-27 Michael John Radley Young Waveguide output for a torsionally vibratable ultrasonic cutting/coagulating tool having a proximally facing hook shaped or re-entrant cutting edge

Cited By (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11730507B2 (en) 2004-02-27 2023-08-22 Cilag Gmbh International Ultrasonic surgical shears and method for sealing a blood vessel using same
US10874418B2 (en) 2004-02-27 2020-12-29 Ethicon Llc Ultrasonic surgical shears and method for sealing a blood vessel using same
US11006971B2 (en) 2004-10-08 2021-05-18 Ethicon Llc Actuation mechanism for use with an ultrasonic surgical instrument
US10537352B2 (en) 2004-10-08 2020-01-21 Ethicon Llc Tissue pads for use with surgical instruments
US9387004B2 (en) 2005-03-03 2016-07-12 Sra Developments Limited Ultrasonic cutting tool
US11998229B2 (en) 2005-10-14 2024-06-04 Cilag Gmbh International Ultrasonic device for cutting and coagulating
US10856896B2 (en) 2005-10-14 2020-12-08 Ethicon Llc Ultrasonic device for cutting and coagulating
US10779848B2 (en) 2006-01-20 2020-09-22 Ethicon Llc Ultrasound medical instrument having a medical ultrasonic blade
US9173672B2 (en) 2006-05-31 2015-11-03 Sra Developments Limited Ultrasonic surgical tool
GB2442137A (en) * 2006-09-19 2008-03-26 Sra Dev Ltd Twin bladed ultrasonic surgical tool head
US9358030B2 (en) 2006-09-19 2016-06-07 Sra Developments Limited Ultrasonic surgical tool
US10722261B2 (en) 2007-03-22 2020-07-28 Ethicon Llc Surgical instruments
US10828057B2 (en) 2007-03-22 2020-11-10 Ethicon Llc Ultrasonic surgical instruments
US8242398B2 (en) 2007-06-11 2012-08-14 Sra Developments Limited Switch for ultrasonic surgical tool
US10531910B2 (en) 2007-07-27 2020-01-14 Ethicon Llc Surgical instruments
US10398466B2 (en) 2007-07-27 2019-09-03 Ethicon Llc Ultrasonic end effectors with increased active length
US11690641B2 (en) 2007-07-27 2023-07-04 Cilag Gmbh International Ultrasonic end effectors with increased active length
US11607268B2 (en) 2007-07-27 2023-03-21 Cilag Gmbh International Surgical instruments
US11877734B2 (en) 2007-07-31 2024-01-23 Cilag Gmbh International Ultrasonic surgical instruments
US11058447B2 (en) 2007-07-31 2021-07-13 Cilag Gmbh International Temperature controlled ultrasonic surgical instruments
US10426507B2 (en) 2007-07-31 2019-10-01 Ethicon Llc Ultrasonic surgical instruments
US11666784B2 (en) 2007-07-31 2023-06-06 Cilag Gmbh International Surgical instruments
US10420579B2 (en) 2007-07-31 2019-09-24 Ethicon Llc Surgical instruments
US10828059B2 (en) 2007-10-05 2020-11-10 Ethicon Llc Ergonomic surgical instruments
US11766276B2 (en) 2007-11-30 2023-09-26 Cilag Gmbh International Ultrasonic surgical blades
US10245065B2 (en) 2007-11-30 2019-04-02 Ethicon Llc Ultrasonic surgical blades
US10433865B2 (en) 2007-11-30 2019-10-08 Ethicon Llc Ultrasonic surgical blades
US10441308B2 (en) 2007-11-30 2019-10-15 Ethicon Llc Ultrasonic surgical instrument blades
US10463887B2 (en) 2007-11-30 2019-11-05 Ethicon Llc Ultrasonic surgical blades
US11690643B2 (en) 2007-11-30 2023-07-04 Cilag Gmbh International Ultrasonic surgical blades
US10265094B2 (en) 2007-11-30 2019-04-23 Ethicon Llc Ultrasonic surgical blades
US10433866B2 (en) 2007-11-30 2019-10-08 Ethicon Llc Ultrasonic surgical blades
US11266433B2 (en) 2007-11-30 2022-03-08 Cilag Gmbh International Ultrasonic surgical instrument blades
US10888347B2 (en) 2007-11-30 2021-01-12 Ethicon Llc Ultrasonic surgical blades
US11253288B2 (en) 2007-11-30 2022-02-22 Cilag Gmbh International Ultrasonic surgical instrument blades
US11439426B2 (en) 2007-11-30 2022-09-13 Cilag Gmbh International Ultrasonic surgical blades
US9474542B2 (en) 2008-05-21 2016-10-25 Sra Developments Ltd. Ultrasonic transducer system
US8668710B2 (en) 2008-05-21 2014-03-11 Sra Developments Limited Ultrasonic tissue dissector
US10709906B2 (en) 2009-05-20 2020-07-14 Ethicon Llc Coupling arrangements and methods for attaching tools to ultrasonic surgical instruments
US11369402B2 (en) 2010-02-11 2022-06-28 Cilag Gmbh International Control systems for ultrasonically powered surgical instruments
US10835768B2 (en) 2010-02-11 2020-11-17 Ethicon Llc Dual purpose surgical instrument for cutting and coagulating tissue
CN104066389A (en) * 2011-10-07 2014-09-24 米松尼克斯股份有限公司 Ultrasonic osteotome
US9421028B2 (en) 2011-10-07 2016-08-23 Misonix, Incorporated Ultrasonic osteotome
EP2763603A4 (en) * 2011-10-07 2015-09-23 Misonix Inc Ultrasonic osteotome
US11602371B2 (en) 2012-06-29 2023-03-14 Cilag Gmbh International Ultrasonic surgical instruments with control mechanisms
US10842580B2 (en) 2012-06-29 2020-11-24 Ethicon Llc Ultrasonic surgical instruments with control mechanisms
US11272952B2 (en) 2013-03-14 2022-03-15 Cilag Gmbh International Mechanical fasteners for use with surgical energy devices
US10226273B2 (en) 2013-03-14 2019-03-12 Ethicon Llc Mechanical fasteners for use with surgical energy devices
US11033292B2 (en) 2013-12-16 2021-06-15 Cilag Gmbh International Medical device
US11020140B2 (en) 2015-06-17 2021-06-01 Cilag Gmbh International Ultrasonic surgical blade for use with ultrasonic surgical instruments
US10357303B2 (en) 2015-06-30 2019-07-23 Ethicon Llc Translatable outer tube for sealing using shielded lap chole dissector
US11553954B2 (en) 2015-06-30 2023-01-17 Cilag Gmbh International Translatable outer tube for sealing using shielded lap chole dissector
EP3539489A1 (en) * 2015-07-01 2019-09-18 Ethicon LLC Ultrasonic surgical blade with improved cutting and coagulation features
WO2017004366A3 (en) * 2015-07-01 2017-02-16 Ethicon Endo-Surgery, Llc Ultrasonic surgical blade with improved cutting and coagulation features
US10154852B2 (en) 2015-07-01 2018-12-18 Ethicon Llc Ultrasonic surgical blade with improved cutting and coagulation features
CN107735036B (en) * 2015-07-01 2021-05-28 伊西康有限责任公司 Ultrasonic surgical blade with improved cutting and coagulation characteristics
EP3539488A1 (en) * 2015-07-01 2019-09-18 Ethicon LLC Ultrasonic surgical blade with improved cutting and coagulation features
US10966744B2 (en) 2016-07-12 2021-04-06 Ethicon Llc Ultrasonic surgical instrument with piezoelectric central lumen transducer
US11883055B2 (en) 2016-07-12 2024-01-30 Cilag Gmbh International Ultrasonic surgical instrument with piezoelectric central lumen transducer
US10245064B2 (en) 2016-07-12 2019-04-02 Ethicon Llc Ultrasonic surgical instrument with piezoelectric central lumen transducer
US10893883B2 (en) 2016-07-13 2021-01-19 Ethicon Llc Ultrasonic assembly for use with ultrasonic surgical instruments
US10842522B2 (en) 2016-07-15 2020-11-24 Ethicon Llc Ultrasonic surgical instruments having offset blades
US10285723B2 (en) 2016-08-09 2019-05-14 Ethicon Llc Ultrasonic surgical blade with improved heel portion
USD847990S1 (en) 2016-08-16 2019-05-07 Ethicon Llc Surgical instrument
USD924400S1 (en) 2016-08-16 2021-07-06 Cilag Gmbh International Surgical instrument
US10420580B2 (en) 2016-08-25 2019-09-24 Ethicon Llc Ultrasonic transducer for surgical instrument
US10779847B2 (en) 2016-08-25 2020-09-22 Ethicon Llc Ultrasonic transducer to waveguide joining
US11350959B2 (en) 2016-08-25 2022-06-07 Cilag Gmbh International Ultrasonic transducer techniques for ultrasonic surgical instrument
US10952759B2 (en) 2016-08-25 2021-03-23 Ethicon Llc Tissue loading of a surgical instrument
US11925378B2 (en) 2016-08-25 2024-03-12 Cilag Gmbh International Ultrasonic transducer for surgical instrument
US10603064B2 (en) 2016-11-28 2020-03-31 Ethicon Llc Ultrasonic transducer
US10820920B2 (en) 2017-07-05 2020-11-03 Ethicon Llc Reusable ultrasonic medical devices and methods of their use

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Publication number Publication date
GB2425480B (en) 2010-04-21
GB0508505D0 (en) 2005-06-01

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