CA2733133A1 - Electrosurgical instrument jaw structure with cutting tip - Google Patents

Electrosurgical instrument jaw structure with cutting tip Download PDF

Info

Publication number
CA2733133A1
CA2733133A1 CA2733133A CA2733133A CA2733133A1 CA 2733133 A1 CA2733133 A1 CA 2733133A1 CA 2733133 A CA2733133 A CA 2733133A CA 2733133 A CA2733133 A CA 2733133A CA 2733133 A1 CA2733133 A1 CA 2733133A1
Authority
CA
Canada
Prior art keywords
electrosurgical instrument
openable
closeable
electrosurgical
scoring
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.)
Abandoned
Application number
CA2733133A
Other languages
French (fr)
Inventor
Al Mirel
Robert J. Laird
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ethicon Endo Surgery Inc
Original Assignee
SurgRx Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SurgRx Inc filed Critical SurgRx Inc
Publication of CA2733133A1 publication Critical patent/CA2733133A1/en
Abandoned legal-status Critical Current

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
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1442—Probes having pivoting end effectors, e.g. forceps
    • A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
    • 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
    • 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
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00059—Material properties
    • A61B2018/00071—Electrical conductivity
    • A61B2018/00083—Electrical conductivity low, i.e. electrically insulating
    • 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
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00404—Blood vessels other than those in or around the heart
    • 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
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00601—Cutting
    • 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
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00619—Welding
    • 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
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1405—Electrodes having a specific shape
    • A61B2018/144—Wire
    • 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
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1497—Electrodes covering only part of the probe circumference

Abstract

An electrosurgical instrument for scoring, welding and transecting tissue is provided. The electrosurgical instrument comprises first and second openable-closeable jaws and at least one scoring electrode extending from a distal end of at least one of the first and second openable-closeable jaws. The first and second openable-closeable jaws comprises first and second conductive tissue engaging surfaces, respectively, and first and second insulating members, respectively. The scoring electrode is coupled with at least one of the first and second insulating members.
The at least one scoring electrode can be activated independently from the first and second openable-closeable jaws so that the electrosurgical instrument can independent score tissue and weld tissue.

Claims (25)

1. An electrosurgical instrument for scoring, welding, and transecting tissue, the electrosurgical instrument comprising:
first and second openable-closeable jaws, the first and second openable-closeable jaws comprising first and second conductive tissue engaging surfaces, respectively, and first and second insulating members, respectively; and at least one scoring electrode extending from a distal end of at least one of the first and second openable-closeable jaws, the scoring electrode coupled with at least one of the first and second insulating members.
2. The electrosurgical instrument of claim 1, wherein the at least one scoring electrode comprises a wire.
3. The electrosurgical instrument of claim 2, wherein the wire comprises a Tungsten wire.
4. The electrosurgical instrument of claim 2, wherein the wire is disposed at least partially within at least one of the first and second insulating members.
5. The electrosurgical instrument of claim 2, wherein a distal portion of the wire extends distally from a distal end of at least one of the first and second insulating members.
6. The electrosurgical instrument of claim 5, wherein the distal portion of the wire loops back into the distal end of at least one of the first and second insulating members and terminates therein.
7. The electrosurgical instrument of claim 1, wherein the at least one scoring electrode is electrically isolated from the first and second conductive tissue engaging surfaces.
8. The electrosurgical instrument of claim 1, wherein a distal portion of at least one of the first and second insulating members extends distally from a distal end of the first and second openable-closeable jaws, respectively.
9. The electrosurgical instrument of claim 1, wherein the first and second insulating members are made of at least one of the materials selected from the group consisting of zirconia, partially stabilized zirconia, aluminum oxide, silicon nitride, alumina-chromia, hydroxyapatite, other non-conductive glass materials, other non-conductive ceramic materials, and other non-conductive glass-ceramic materials.
10. The electrosurgical instrument of claim 1, wherein the at least one scoring electrode is adapted to be activated to apply electrosurgical energy to score tissue.
11. The electrosurgical instrument of claim 10, wherein the first and second openable-closeable jaws are adapted to be activated to apply electrosurgical energy to weld tissue.
12. The electrosurgical instrument of claim 11, wherein the at least one scoring electrode can be activated independently from the first and second openable-closeable jaws.
13. The electrosurgical instrument of claim 11, wherein the applied electrosurgical energy comprises radiofrequency (RF) energy.
14. The electrosurgical instrument of claim 1, wherein the first and second conductive tissue engaging surfaces are coupled to a radiofrequency (RF) energy source.
15. The electrosurgical instrument of claim 1, further comprising:
a proximal handle portion; and an elongate shaft having a proximal end and a distal end, the proximal end coupled to the proximal handle portion and the distal end coupled to the first and second openable-closeable jaws, wherein the first and second openable-closeable jaws are adapted to be rotatable about a longitudinal axis of the elongate shaft.
16. The electrosurgical instrument of claim 1, further comprising an axially-extending element actuable from a retracted position to an extended position in an axial channel defined by the first and second openable-closeable jaws, a distal portion of the axially-extending element having a cutting member adapted to transect tissue.
17. The electrosurgical instrument of claim 1, wherein the first and second openable-closeable jaws further comprise first and second positive temperature coefficient (PTC) bodies, respectively.
18. The electrosurgical instrument of claim 1, wherein the first conductive tissue engaging surface has a plurality opposite of a polarity of the second conductive tissue engaging surface.
19. The electrosurgical instrument of claim 1, wherein the first conductive tissue engaging surface comprises a peripheral portion and a non-peripheral portion, the peripheral portion having a polarity opposite of a polarity of non-peripheral portion.
20. The electrosurgical instrument of claim 1, wherein the second conductive tissue engaging surface comprises a peripheral portion and a non-peripheral portion, the peripheral portion having a polarity opposite of a polarity of non-peripheral portion.
21. A method for scoring, welding, and transecting a target tissue volume using a electrosurgical jaw, the method comprising:
scoring a tissue structure adjacent the target tissue volume with a scoring electrode extending distally from at least one of a first openable-closeable jaw and a second openable-closeable jaw;
clamping the target tissue volume between a first tissue engaging surface and a second tissue engaging surface of the first openable-closeable jaw and second openable-closeable jaw, respectively;
delivering RF energy to the target tissue volume to weld at least a portion of the target tissue volume.
22. The method of claim 21, further comprising transecting the target tissue volume with the electrosurgical jaw.
23. The method of claim 21, wherein the first openable-closeable jaws and second openable-closeable jaws each comprise a first positive temperature coefficient (PTC) body portion and a second positive temperature coefficient (PTC) body portion, respectively.
24. The method of claim 23, wherein delivering RF energy to the target tissue volume comprises utilizing at least one of the first PTC body portion and the second PTC body portion to reduce tissue desiccation and charring in the target tissue volume.
25. The method of claim 23, wherein delivering RF energy to the target tissue volume comprises utilizing at least one of the first PTC body portion and the second PTC body portion to modulate a progression of ohmic heating.
CA2733133A 2008-08-07 2009-08-05 Electrosurgical instrument jaw structure with cutting tip Abandoned CA2733133A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US8700108P 2008-08-07 2008-08-07
US61/087,001 2008-08-07
US12/534,934 US20100036370A1 (en) 2008-08-07 2009-08-04 Electrosurgical instrument jaw structure with cutting tip
US12/534,934 2009-08-04
PCT/US2009/052797 WO2010017266A1 (en) 2008-08-07 2009-08-05 Electrosurgical instrument jaw structure with cutting tip

Publications (1)

Publication Number Publication Date
CA2733133A1 true CA2733133A1 (en) 2010-02-11

Family

ID=41653615

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2733133A Abandoned CA2733133A1 (en) 2008-08-07 2009-08-05 Electrosurgical instrument jaw structure with cutting tip

Country Status (6)

Country Link
US (1) US20100036370A1 (en)
EP (1) EP2349042A1 (en)
JP (1) JP2011530333A (en)
CN (1) CN102119010A (en)
CA (1) CA2733133A1 (en)
WO (1) WO2010017266A1 (en)

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