CA2443246A1 - Electrosurgical instrument reducing thermal spread - Google Patents
Electrosurgical instrument reducing thermal spread Download PDFInfo
- Publication number
- CA2443246A1 CA2443246A1 CA002443246A CA2443246A CA2443246A1 CA 2443246 A1 CA2443246 A1 CA 2443246A1 CA 002443246 A CA002443246 A CA 002443246A CA 2443246 A CA2443246 A CA 2443246A CA 2443246 A1 CA2443246 A1 CA 2443246A1
- Authority
- CA
- Canada
- Prior art keywords
- insulating substrate
- electrically conductive
- electrosurgical instrument
- conductive surface
- volts
- 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.)
- Granted
Links
Landscapes
- Surgical Instruments (AREA)
Abstract
An electrosurgical instrument which includes opposing end effectors and a handle for effecting movement of the end effectors relative to one another.
The instrument includes a housing and a pair of electrodes. Each electode preferably includes an electrically conductive surface (e.g., which can be dimensioned for sealing, clamping and/or cutting) and an insulating substrate which is dimensioned to be engageable with the end effectors such that the electrodes reside in opposing relation relative to one another. The dimensions of the insulating substrate are different from the dimensions of the electrically conductive surface to reduce thermal spread to adjacent tissue structures. The insulating substrate is made from a material having a Comparative Tracking Index of about 300 volts to about 600 volts to reduce the incidence of flashover.
The instrument includes a housing and a pair of electrodes. Each electode preferably includes an electrically conductive surface (e.g., which can be dimensioned for sealing, clamping and/or cutting) and an insulating substrate which is dimensioned to be engageable with the end effectors such that the electrodes reside in opposing relation relative to one another. The dimensions of the insulating substrate are different from the dimensions of the electrically conductive surface to reduce thermal spread to adjacent tissue structures. The insulating substrate is made from a material having a Comparative Tracking Index of about 300 volts to about 600 volts to reduce the incidence of flashover.
Claims (10)
1. An electrosurgical instrument having opposing end effectors and a handle for effecting movement of the end effectors relative to one another, comprising:
a housing;
a pair of electrodes each including an electrically conductive surface and an insulating substrate, the dimensions of the insulating substrate are different from the dimensions of the electrically conductive surface to reduce thermal spread to adjacent tissue structures and the insulating substrate is made from a material having a Comparative Tracking Index of about 300 volts to about 600 volts to reduce the incidence of flashover.
a housing;
a pair of electrodes each including an electrically conductive surface and an insulating substrate, the dimensions of the insulating substrate are different from the dimensions of the electrically conductive surface to reduce thermal spread to adjacent tissue structures and the insulating substrate is made from a material having a Comparative Tracking Index of about 300 volts to about 600 volts to reduce the incidence of flashover.
2. An electrosurgical instrument according to claim 1 wherein the insulating substrate is made from a material having Comparative Tracking Index of about 300 volts to about 600 volts.
3. An electrosurgical instrument according to claim 1 wherein the insulating substrate is selected from the group consisting of nylon, syndiotactic-polystryrene, polybutylene terephthalate, polycarbonate, acrylonitrile butadiene styrene, polyphthalamide, polymide, polyethylene terephthalate, polyamide-imide, acrylic, polystyrene, polyether sulfone, aliphatic polyketone, acetal copolymer, polyurethane, nylon with polyphenylene-oxide dispersion and acrylonitrile styrene acrylate.
4. An electrosurgical instrument according to claim 1 wherein the insulating substrate is mounted to the electrically conductive surface by overmolding a stamped plate.
5. An electrosurgical instrument according to claim 1 wherein the insulating substrate is mounted to the electrically conductive surface by overmolding a metal injection molded plate.
6. An electrosurgical instrument according to claim 1 wherein the electrically conductive surface of at least one electrode includes a pinch trim and the insulating substrate extends beyond a periphery of the electrically conductive surface.
7. An electrosurgical instrument according to claim 1 wherein the insulating substrate of each of the electrodes includes at least one mechanical interface for engaging a complimentary mechanical interface disposed on the corresponding end effector of the instrument.
8. An electrosurgical instrument according to claim 1 wherein the electrically conductive surfaces of the opposing jaw members cooperate to seal tissue.
9. An electrosurgical instrument according to claim 1 wherein the electrically conductive surfaces of the opposing jaw members include shearing surfaces which cooperate to cut tissue.
10. An electrosurgical instrument having a handle and at least one shaft for effecting movement of a pair of opposing end effectors relative to one another, comprising:
a housing;
a pair of electrodes each having an electrically conductive surface having a first geometric shape and an insulating substrate having a second geometric shape, the electrodes being integrally associated with the end effectors of the instrument such that the electrodes reside in opposing relation relative to one another;
wherein the second geometric shape of the insulating substrate is different than the first geometric shape of the electrically conductive surface to reduce thermal spread to adjacent tissue structures;
and the insulating substrate is made from a material having a Comparative Tracking Index of about 300 volts to about 600 volts to reduce the incidence of flashover.
a housing;
a pair of electrodes each having an electrically conductive surface having a first geometric shape and an insulating substrate having a second geometric shape, the electrodes being integrally associated with the end effectors of the instrument such that the electrodes reside in opposing relation relative to one another;
wherein the second geometric shape of the insulating substrate is different than the first geometric shape of the electrically conductive surface to reduce thermal spread to adjacent tissue structures;
and the insulating substrate is made from a material having a Comparative Tracking Index of about 300 volts to about 600 volts to reduce the incidence of flashover.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2001/011230 WO2002080784A1 (en) | 1999-09-01 | 2001-04-06 | Electrosurgical instrument reducing thermal spread |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2443246A1 true CA2443246A1 (en) | 2002-10-17 |
| CA2443246C CA2443246C (en) | 2012-01-24 |
Family
ID=30769010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2443246A Expired - Fee Related CA2443246C (en) | 2001-04-06 | 2001-04-06 | Electrosurgical instrument reducing thermal spread |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4394880B2 (en) |
| AU (1) | AU2001249912B9 (en) |
| CA (1) | CA2443246C (en) |
| DE (1) | DE60121050T2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7789883B2 (en) * | 2007-02-14 | 2010-09-07 | Olympus Medical Systems Corp. | Curative treatment system, curative treatment device, and treatment method for living tissue using energy |
| US7935114B2 (en) * | 2007-02-14 | 2011-05-03 | Olympus Medical Systems Corp. | Curative treatment system, curative treatment device, and treatment method for living tissue using energy |
| DE102019121035A1 (en) * | 2019-08-05 | 2021-02-11 | Karl Storz Se & Co. Kg | Endoscopic device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5951549A (en) * | 1996-12-20 | 1999-09-14 | Enable Medical Corporation | Bipolar electrosurgical scissors |
| US6050996A (en) * | 1997-11-12 | 2000-04-18 | Sherwood Services Ag | Bipolar electrosurgical instrument with replaceable electrodes |
| US6086586A (en) * | 1998-09-14 | 2000-07-11 | Enable Medical Corporation | Bipolar tissue grasping apparatus and tissue welding method |
-
2001
- 2001-04-06 AU AU2001249912A patent/AU2001249912B9/en not_active Ceased
- 2001-04-06 DE DE60121050T patent/DE60121050T2/en not_active Expired - Lifetime
- 2001-04-06 CA CA2443246A patent/CA2443246C/en not_active Expired - Fee Related
- 2001-04-06 JP JP2002578823A patent/JP4394880B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| AU2001249912B2 (en) | 2006-06-29 |
| AU2001249912B9 (en) | 2006-11-09 |
| DE60121050D1 (en) | 2006-08-03 |
| JP4394880B2 (en) | 2010-01-06 |
| JP2004524919A (en) | 2004-08-19 |
| DE60121050T2 (en) | 2007-01-04 |
| CA2443246C (en) | 2012-01-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20170406 |
|
| MKLA | Lapsed |
Effective date: 20170406 |