GB2022974A - Improved electrically heated apparatus and method and material - Google Patents
Improved electrically heated apparatus and method and materialInfo
- Publication number
- GB2022974A GB2022974A GB7911705A GB7911705A GB2022974A GB 2022974 A GB2022974 A GB 2022974A GB 7911705 A GB7911705 A GB 7911705A GB 7911705 A GB7911705 A GB 7911705A GB 2022974 A GB2022974 A GB 2022974A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- current
- permeability
- ferromagnetic
- laminate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/08—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Otolaryngology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- General Induction Heating (AREA)
- Laser Surgery Devices (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
Abstract
A self-regulating resistive electric heating element consists of a two- layer laminate, the first layer having high electrical conductivity and low magnetic permeability and being itself, as described a laminate comprising a sandwich of cutting steel 21, Fig. 2, between two layers of metal 23 such as silver or copper, and the second layer 25 having a high permeability and a low conductivity and being of ferromagnetic material. If an r.f. current is passed through such an element using an additional conductive layer 29 insulated 27 from the element as the return conductor, at low temperatures the majority of the current will pass, owing to the skin effect, through the thin ferromagnetic layer and thereby cause heating, but as the temperature rises towards the Curie point of the ferromagnetic layer, its permeability falls, the skin depth increases, and as a consequence less current is carried by the ferromagnetic layer and more by the other layer 21, 23, which results in a net drop in the rate of generation of heat. As described the composite heating element is sharpened to a cutting edge 15 and forms part of a surgical scalpel. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US89838878A | 1978-04-20 | 1978-04-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB2022974A true GB2022974A (en) | 1979-12-19 |
Family
ID=25409375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7911705A Withdrawn GB2022974A (en) | 1978-04-20 | 1979-04-04 | Improved electrically heated apparatus and method and material |
Country Status (6)
Country | Link |
---|---|
JP (2) | JPS54164389A (en) |
BR (1) | BR7902444A (en) |
DE (1) | DE2914401A1 (en) |
FR (1) | FR2428279A1 (en) |
GB (1) | GB2022974A (en) |
NL (1) | NL7903018A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8292879B2 (en) | 2009-04-17 | 2012-10-23 | Domain Surgical, Inc. | Method of treatment with adjustable ferromagnetic coated conductor thermal surgical tool |
US8617151B2 (en) | 2009-04-17 | 2013-12-31 | Domain Surgical, Inc. | System and method of controlling power delivery to a surgical instrument |
US8858544B2 (en) | 2011-05-16 | 2014-10-14 | Domain Surgical, Inc. | Surgical instrument guide |
US8915909B2 (en) | 2011-04-08 | 2014-12-23 | Domain Surgical, Inc. | Impedance matching circuit |
US8932279B2 (en) | 2011-04-08 | 2015-01-13 | Domain Surgical, Inc. | System and method for cooling of a heated surgical instrument and/or surgical site and treating tissue |
US9078655B2 (en) | 2009-04-17 | 2015-07-14 | Domain Surgical, Inc. | Heated balloon catheter |
US9107666B2 (en) | 2009-04-17 | 2015-08-18 | Domain Surgical, Inc. | Thermal resecting loop |
US9131977B2 (en) | 2009-04-17 | 2015-09-15 | Domain Surgical, Inc. | Layered ferromagnetic coated conductor thermal surgical tool |
US9265556B2 (en) | 2009-04-17 | 2016-02-23 | Domain Surgical, Inc. | Thermally adjustable surgical tool, balloon catheters and sculpting of biologic materials |
US9526558B2 (en) | 2011-09-13 | 2016-12-27 | Domain Surgical, Inc. | Sealing and/or cutting instrument |
US10357306B2 (en) | 2014-05-14 | 2019-07-23 | Domain Surgical, Inc. | Planar ferromagnetic coated surgical tip and method for making |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4481057A (en) * | 1980-10-28 | 1984-11-06 | Oximetrix, Inc. | Cutting device and method of manufacture |
JPH0320664U (en) * | 1989-07-06 | 1991-02-28 | ||
EP0578771B1 (en) * | 1991-04-05 | 1999-12-29 | Metcal, Inc. | Instrument for cutting, coagulating and ablating tissue |
US6230603B1 (en) * | 1996-04-29 | 2001-05-15 | Zbigniew Kubala | Cutting blade for resistance-heated elastomer cutters |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA761133B (en) * | 1975-03-14 | 1977-02-23 | R Shaw | Surgical instrument having self-regulated electrical skin-depth heating of its cutting edge and method of using the same |
US4091813A (en) * | 1975-03-14 | 1978-05-30 | Robert F. Shaw | Surgical instrument having self-regulated electrical proximity heating of its cutting edge and method of using the same |
-
1979
- 1979-04-04 GB GB7911705A patent/GB2022974A/en not_active Withdrawn
- 1979-04-10 DE DE19792914401 patent/DE2914401A1/en not_active Withdrawn
- 1979-04-18 NL NL7903018A patent/NL7903018A/en not_active Application Discontinuation
- 1979-04-18 FR FR7909724A patent/FR2428279A1/en not_active Withdrawn
- 1979-04-19 BR BR7902444A patent/BR7902444A/en unknown
- 1979-04-20 JP JP4887079A patent/JPS54164389A/en active Granted
-
1986
- 1986-10-15 JP JP61245140A patent/JPS62129048A/en active Granted
Cited By (38)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9131977B2 (en) | 2009-04-17 | 2015-09-15 | Domain Surgical, Inc. | Layered ferromagnetic coated conductor thermal surgical tool |
US9730749B2 (en) | 2009-04-17 | 2017-08-15 | Domain Surgical, Inc. | Surgical scalpel with inductively heated regions |
US8377052B2 (en) | 2009-04-17 | 2013-02-19 | Domain Surgical, Inc. | Surgical tool with inductively heated regions |
US8414569B2 (en) | 2009-04-17 | 2013-04-09 | Domain Surgical, Inc. | Method of treatment with multi-mode surgical tool |
US8419724B2 (en) | 2009-04-17 | 2013-04-16 | Domain Surgical, Inc. | Adjustable ferromagnetic coated conductor thermal surgical tool |
US8425503B2 (en) | 2009-04-17 | 2013-04-23 | Domain Surgical, Inc. | Adjustable ferromagnetic coated conductor thermal surgical tool |
US8430870B2 (en) | 2009-04-17 | 2013-04-30 | Domain Surgical, Inc. | Inductively heated snare |
US8491578B2 (en) | 2009-04-17 | 2013-07-23 | Domain Surgical, Inc. | Inductively heated multi-mode bipolar surgical tool |
US8292879B2 (en) | 2009-04-17 | 2012-10-23 | Domain Surgical, Inc. | Method of treatment with adjustable ferromagnetic coated conductor thermal surgical tool |
US8523851B2 (en) | 2009-04-17 | 2013-09-03 | Domain Surgical, Inc. | Inductively heated multi-mode ultrasonic surgical tool |
US8523852B2 (en) | 2009-04-17 | 2013-09-03 | Domain Surgical, Inc. | Thermally adjustable surgical tool system |
US8523850B2 (en) | 2009-04-17 | 2013-09-03 | Domain Surgical, Inc. | Method for heating a surgical implement |
US8617151B2 (en) | 2009-04-17 | 2013-12-31 | Domain Surgical, Inc. | System and method of controlling power delivery to a surgical instrument |
US11123127B2 (en) | 2009-04-17 | 2021-09-21 | Domain Surgical, Inc. | System and method of controlling power delivery to a surgical instrument |
US10639089B2 (en) | 2009-04-17 | 2020-05-05 | Domain Surgical, Inc. | Thermal surgical tool |
US10441342B2 (en) | 2009-04-17 | 2019-10-15 | Domain Surgical, Inc. | Multi-mode surgical tool |
US9078655B2 (en) | 2009-04-17 | 2015-07-14 | Domain Surgical, Inc. | Heated balloon catheter |
US9107666B2 (en) | 2009-04-17 | 2015-08-18 | Domain Surgical, Inc. | Thermal resecting loop |
US8506561B2 (en) | 2009-04-17 | 2013-08-13 | Domain Surgical, Inc. | Catheter with inductively heated regions |
US10405914B2 (en) | 2009-04-17 | 2019-09-10 | Domain Surgical, Inc. | Thermally adjustable surgical system and method |
US9320560B2 (en) | 2009-04-17 | 2016-04-26 | Domain Surgical, Inc. | Method for treating tissue with a ferromagnetic thermal surgical tool |
US9265553B2 (en) | 2009-04-17 | 2016-02-23 | Domain Surgical, Inc. | Inductively heated multi-mode surgical tool |
US9265555B2 (en) | 2009-04-17 | 2016-02-23 | Domain Surgical, Inc. | Multi-mode surgical tool |
US9265554B2 (en) | 2009-04-17 | 2016-02-23 | Domain Surgical, Inc. | Thermally adjustable surgical system and method |
US9265556B2 (en) | 2009-04-17 | 2016-02-23 | Domain Surgical, Inc. | Thermally adjustable surgical tool, balloon catheters and sculpting of biologic materials |
US9220557B2 (en) | 2009-04-17 | 2015-12-29 | Domain Surgical, Inc. | Thermal surgical tool |
US10213247B2 (en) | 2009-04-17 | 2019-02-26 | Domain Surgical, Inc. | Thermal resecting loop |
US9549774B2 (en) | 2009-04-17 | 2017-01-24 | Domain Surgical, Inc. | System and method of controlling power delivery to a surgical instrument |
US8372066B2 (en) | 2009-04-17 | 2013-02-12 | Domain Surgical, Inc. | Inductively heated multi-mode surgical tool |
US10149712B2 (en) | 2009-04-17 | 2018-12-11 | Domain Surgical, Inc. | Layered ferromagnetic coated conductor thermal surgical tool |
US8932279B2 (en) | 2011-04-08 | 2015-01-13 | Domain Surgical, Inc. | System and method for cooling of a heated surgical instrument and/or surgical site and treating tissue |
US8915909B2 (en) | 2011-04-08 | 2014-12-23 | Domain Surgical, Inc. | Impedance matching circuit |
US9149321B2 (en) | 2011-04-08 | 2015-10-06 | Domain Surgical, Inc. | System and method for cooling of a heated surgical instrument and/or surgical site and treating tissue |
US8858544B2 (en) | 2011-05-16 | 2014-10-14 | Domain Surgical, Inc. | Surgical instrument guide |
US9526558B2 (en) | 2011-09-13 | 2016-12-27 | Domain Surgical, Inc. | Sealing and/or cutting instrument |
US11266459B2 (en) | 2011-09-13 | 2022-03-08 | Domain Surgical, Inc. | Sealing and/or cutting instrument |
US10357306B2 (en) | 2014-05-14 | 2019-07-23 | Domain Surgical, Inc. | Planar ferromagnetic coated surgical tip and method for making |
US11701160B2 (en) | 2014-05-14 | 2023-07-18 | Domain Surgical, Inc. | Planar ferromagnetic coated surgical tip and method for making |
Also Published As
Publication number | Publication date |
---|---|
BR7902444A (en) | 1979-10-23 |
JPH0351179B2 (en) | 1991-08-06 |
JPS6232938B2 (en) | 1987-07-17 |
DE2914401A1 (en) | 1979-10-31 |
JPS62129048A (en) | 1987-06-11 |
NL7903018A (en) | 1979-10-23 |
FR2428279A1 (en) | 1980-01-04 |
JPS54164389A (en) | 1979-12-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |