WO2002047568A9 - Electrosurgical electrode shroud - Google Patents

Electrosurgical electrode shroud

Info

Publication number
WO2002047568A9
WO2002047568A9 PCT/US2001/044544 US0144544W WO0247568A9 WO 2002047568 A9 WO2002047568 A9 WO 2002047568A9 US 0144544 W US0144544 W US 0144544W WO 0247568 A9 WO0247568 A9 WO 0247568A9
Authority
WO
WIPO (PCT)
Prior art keywords
electrosurgical
end portion
shroud
recited
electrode
Prior art date
Application number
PCT/US2001/044544
Other languages
French (fr)
Other versions
WO2002047568A1 (en
Inventor
Charles Allen
Joe Sartor
Original Assignee
Sherwood Serv Ag
Allen Charles R
Joe Sartor
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 Sherwood Serv Ag, Allen Charles R, Joe Sartor filed Critical Sherwood Serv Ag
Priority to EP01270283A priority Critical patent/EP1341462B1/en
Priority to AU1791902A priority patent/AU1791902A/en
Priority to JP2002549146A priority patent/JP4067403B2/en
Priority to AU2002217919A priority patent/AU2002217919B2/en
Priority to CA2420663A priority patent/CA2420663C/en
Priority to DE60113150T priority patent/DE60113150T2/en
Publication of WO2002047568A1 publication Critical patent/WO2002047568A1/en
Priority to US10/358,450 priority patent/US6986768B2/en
Publication of WO2002047568A9 publication Critical patent/WO2002047568A9/en
Priority to US11/405,746 priority patent/US7582244B2/en

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
    • A61B18/1402—Probes for open surgery
    • 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
    • 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
    • A61B18/1477—Needle-like 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
    • A61B2018/00172—Connectors and adapters therefor
    • A61B2018/00178—Electrical connectors
    • 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
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00696—Controlled or regulated parameters
    • A61B2018/00738—Depth, e.g. depth of ablation
    • 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
    • A61B2018/1425—Needle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
    • A61B2090/034—Abutting means, stops, e.g. abutting on tissue or skin abutting on parts of the device itself
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06—Measuring instruments not otherwise provided for
    • A61B2090/062—Measuring instruments not otherwise provided for penetration depth

Definitions

  • the present disclosure relates to an electrode shroud and, more particularly, to
  • an electrosurgical electrode shroud which facilitates correct insertion of the electrode
  • wire loops round or diamond shape, for planing and contouring tissue, balls for
  • an electrosurgical electrode tip adapted for a nail matrisectomy procedure.
  • first end and a second end.
  • the first or distal end is an active exposed
  • the second or proximal end is configured for connection to an electrosurgical
  • the second end is configured to be inserted into the end
  • the prior art includes provisions for assisting electrode connection to the
  • electrosurgical pencils available from Valleylab, Boulder, Colorado, include a flange on the distal end of the pencil which assists in securing the electrode to the pencil.
  • shroud is to minimize electrical arcing between the electrode and surrounding objects
  • electrodes with opaque shrouds include model numbers E1510 through E1513 single
  • the electrode is fully seated within the electrosurgical apparatus.
  • An electrosurgical electrode shroud including a hollow substantially
  • cylindrical member having a first end portion and a second end portion; the first end
  • portion defining an opening which is configured and dimensioned to receive an
  • electrosurgical electrode assembly therein; and the second end portion defining an opening which is configured and dimensioned to receive an electrode mounting
  • inside diameter of the opening defined by the first end portion is preferably configured
  • the inside diameter of the opening defined by the second end portion is substantially
  • shroud is preferably formed of an elastomeric material to enable the shroud to be
  • an electrosurgical electrode shroud comprising a hollow substantially
  • cylindrical member having a first end portion and a second end portion; the first end
  • portion defining an opening which is configured and dimensioned to receive the
  • electrosurgical electrode assembly therein; and the second end portion defining an opening which is configured and dimensioned to receive an electrode mounting
  • the electrosurgical electrode assembly is formed of a substantially translucent material.
  • the electrically-conductive material may also include at least one layer of insulating material formed on the electrically-conductive material.
  • FIG. 1 is a side view illustrating an electrosurgical electrode diagrammatically
  • FIG. 2 is a side view illustrating an electrosurgical electrode having a needle-
  • FIG. 3 is a side view illustrating an electrosurgical electrode with tip protectors
  • FIG. 4 is a top view illustrating an electrosurgical electrode having an electrode
  • the present disclosure describes an electrosurgical electrode shroud including
  • a hollow substantially cylindrical member having a first end portion and a second end
  • the first end portion defines an opening which is configured and
  • end portion defines an opening which is configured and dimensioned to receive an
  • end portion is formed of a substantially translucent material.
  • FIG. 1 one embodiment of an electrosurgical electrode utilized in
  • Electrosurgical electrode 10 includes an elongate electrically-conductive shaft
  • Distal end 14 is configured to
  • the tip of distal end 14 is rounded.
  • the center region of electrosurgical electrode 10 is coated with first and
  • first layer of electrically-styrene resin plastic which may be of any desired thickness.
  • first layer of electrically-styrene resin plastic which may be of any desired thickness.
  • insulating coating 20 is a PTFE coating and second layer of electrically-insulating
  • Second layer of electrically-insulating coating 20 is
  • FIG. 2 another embodiment of an electrosurgical electrode
  • Electrosurgical electrode 30 also includes
  • distal end 34 may be formed in any shape known to one
  • distal end 34 illustrated in FIG. 2 terminates in a
  • Distal end 34 is preferably coated with a silicon
  • FIG. 3 illustrates electrosurgical electrode 30 having a tip protector 44
  • Tip and shank protectors 44 and 46 protect the proximal and distal ends of
  • electrosurgical electrode 30 during shipping and storage.
  • electrode shroud 50 is illustrated mounted on an electrosurgical electrode 30.
  • Shroud 50 Is formed as a hollow substantially cylindrical member having a first
  • First end portion 52 defines an opening
  • electrode 30 from a pencil.
  • gripping is enhanced by a roughened or
  • Second end portion 54 defines an opening which is configured and
  • First end portion 52 and second end portion 54 are preferably joined by a
  • the opening 54 is preferably in the range of about .030 inches to about .050 inches.
  • second end portion 54 is preferably molded to an angle in the range of about 5 to
  • shroud 50 is approximately 0.80 inches with first end portion 52 being
  • transition portion 53 being approximately 0.10 inches
  • second end portion 54 being approximately 0.30 inches long.
  • shroud 50 is preferably formed of an elastomeric material. In a preferred embodiment, shroud 50 is preferably formed of an elastomeric material.
  • the elastomeric material is a blue tinted thermoplastic material such as a
  • the resin compound is preferably formed of 49.875% GLS Dynaflex G270I
  • Clariant CPE 06539 TPR Royal Blue available from Clariant Masterbatches Division
  • the shroud is molded over an
  • shroud may be
  • Fig. 6 illustrates an electrode 70 positioned
  • Electrode 70 is restrained from over-insertion into the
  • shroud 76 is forced through ports within clamshell mold 74 to form shroud 76 on
  • a mandrel 72 is provided within the mold assembly to form the inner
  • ejector 79 a stripper plate, function as a pusher to push the shroud 76 and electrode
  • one purpose of the shroud 50 is to prevent
  • At least the second end portion 54 is preferably
  • second end portion 54 may be formed of a clear material, it is preferred that
  • second end portion 54 is formed of a tinted translucent material.
  • the electrosurgical electrode shroud may further include a visual or tactile
  • portion 54 may include a circumferential indicator line 56 scribed thereon to provide
  • Indicator line 56 is preferably set off by arrow 57 formed on transition
  • a tactile indicator may be added in the shape of a
  • electrosurgical instrument is inserted into second end portion 54, the electrosurgical

Abstract

An electrosurgical electrode shroud including a hollow substantially cylindrical member having a first end portion and a second end portion; the first end portion defining an opening which is configured and dimensioned to receive an electrosurgical electrode assembly therein; the second end portion defining an opening which is configured and dimensioned to receive an electrode mounting portion of an electrosurgical instrument, wherein at least the second end portion is formed of a substantially translucent material. The electrosurgical electrode shroud may further include visual or tactile indicator on the second end portion for indicating a depth of penetration of the electrosurgical instrument within the second end portion when viewed by the surgeon through the translucent material.

Description

ELECTROSURGICAL ELECTRODE SHROUD
BACKGROUND
1. Field of the Invention
The present disclosure relates to an electrode shroud and, more particularly, to
an electrosurgical electrode shroud which facilitates correct insertion of the electrode
into an electrosurgical instrument.
2. Description of the Related Art
As surgical knowledge and techniques have progressed, there has been a
corresponding trend toward size reduction of surgical incisions and invasive
instruments, thus decreasing patient trauma and contributing to rapidity of patient
recovery. This has led to the practice of laparoscopic and other surgical procedures
using small medical electrodes. When using medical electrodes during the
performance of a surgical procedure, different types of currents can be employed for
different procedures. For example, fully rectified, fully filtered currents can be used for
cutting tissue; for cutting with coagulation; and for hemostasis. Spark gap currents
can be used for fulguration and dessication techniques. Various electrode
configurations are also available; for example, metal needles for making incisions,
wire loops, round or diamond shape, for planing and contouring tissue, balls for
coagulation and hemostasis, and scalpel shapes for incision and excision of tissue. In all these known electrode configurations, the working end of the electrode is
electrically conductive, usually metallic,
and is fully exposed, so that all sides of the electrode working end are capable of
transmitting the high frequency currents to the tissue.
Thus, electrosurgical electrodes are known in the art and are used for a variety
of surgical procedures. For example, U.S. Patent No. 6,004,318 to Garito et al.
discloses an electrosurgical coagulation electrode to accomplish direct
cyclocoagulation for treating glaucoma. U.S. Patent No. 4,517,975 to Garito et al.
discloses an electrosurgical electrode tip adapted for a nail matrisectomy procedure.
Each of the electrosurgical electrodes discussed above and known in the prior
art include a first end and a second end. The first or distal end is an active exposed
tip which is used for applying the electrical signal to the patient. The active exposed
tip of the first end is supported by structure that is completely electrically insulated to
avoid damage to surrounding tissue, and to allow the physician to use these inactive
insulated parts to help position and guide the active tip, which is the only part capable
of treating tissue, during the surgical procedure.
The second or proximal end is configured for connection to an electrosurgical
apparatus. More specifically, the second end is configured to be inserted into the end
of an electrosurgical apparatus which provides the electrical input to the electrode.
Moreover, the prior art includes provisions for assisting electrode connection to the
electrosurgical apparatus. For example, the Model E2100 and Model E2550 reusable
electrosurgical pencils, available from Valleylab, Boulder, Colorado, include a flange on the distal end of the pencil which assists in securing the electrode to the pencil.
Furthermore, the prior art includes insulated electrodes having a hard elongated
opaque or solid colored boot-type shroud mounted on the end of the electrode which
is configured for insertion into an electrosurgical apparatus. A function of the prior art
shroud is to minimize electrical arcing between the electrode and surrounding objects
at the point of connection to the electrosurgical apparatus. Examples of the prior art
electrodes with opaque shrouds include model numbers E1510 through E1513 single
use stainless steel electrodes which are available from Valleylab, Boulder, Colorado.
The prior art opaque shrouds may also include a circumferential seal formed on an
inner surface of the shroud for forming a seal around the electrosurgical apparatus as
it is inserted into the shroud. In another prior art technique, a section of an opaque
rubber catheter having a flared end is separately fitted over the junction of the
electrode and the pencil.
One advantage of the present invention over the prior art electrode shrouds is
that the present invention provides the surgeon with the ability to visually confirm that
the electrode is fully seated within the electrosurgical apparatus.
SUMMARY
An electrosurgical electrode shroud is provided including a hollow substantially
cylindrical member having a first end portion and a second end portion; the first end
portion defining an opening which is configured and dimensioned to receive an
electrosurgical electrode assembly therein; and the second end portion defining an opening which is configured and dimensioned to receive an electrode mounting
portion of an electrosurgical instrument, wherein at least the second end portion is
formed of a substantially translucent material. The electrosurgical electrode shroud
may further include a visual or tactile indicator on the second end portion for indicating
a depth of penetration of the electrosurgical instrument within the second end portion
when viewed by the surgeon through the translucent material.
The electrosurgical electrode shroud may further include a frustoconical
transition portion between the first end portion and the second end portion. The
inside diameter of the opening defined by the first end portion is preferably configured
to fit an outside diameter of the electrosurgical electrode assembly received therein.
The inside diameter of the opening defined by the second end portion is substantially
equal to an outside diameter of the electrosurgical instrument received therein. The
shroud is preferably formed of an elastomeric material to enable the shroud to be
stretched to fit over the electrosurgical electrode and the electrosurgical instrument
thereby ensuring a tight fit.
An electrosurgical electrode assembly is also provided having an elongate
electrically- conductive shaft member with a proximal end for receiving electrosurgical
currents from an electrosurgical instrument and a distal end, wherein the improvement
includes an electrosurgical electrode shroud comprising a hollow substantially
cylindrical member having a first end portion and a second end portion; the first end
portion defining an opening which is configured and dimensioned to receive the
electrosurgical electrode assembly therein; and the second end portion defining an opening which is configured and dimensioned to receive an electrode mounting
portion of the electrosurgical instrument, wherein the at least second end portion is
formed of a substantially translucent material. The electrosurgical electrode assembly
may also include at least one layer of insulating material formed on the electrically-
conductive shaft.
These features and advantages of the present disclosure will become apparent
from the following detailed description of illustrative embodiments, which is to be read
in connection with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
For a better understanding of the invention, reference is made to the following
description of exemplary embodiments thereof, and to the accompanying drawings,
wherein:
FIG. 1 is a side view illustrating an electrosurgical electrode diagrammatically
connected to an electrosurgical apparatus;
FIG. 2 is a side view illustrating an electrosurgical electrode having a needle-
shaped active tip;
FIG. 3 is a side view illustrating an electrosurgical electrode with tip protectors;
FIG. 4 is a top view illustrating an electrosurgical electrode having an electrode
shroud installed thereon in accordance with the present invention; FIG. 5 is a side cross-sectional view illustrating an electrosurgical electrode
having an electrode shroud installed thereon in accordance with the present invention;
and
FIG. 6 is a side cross-sectional view illustrating a mold for forming a safety
sleeve on an electrosurgical electrode.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
The present disclosure describes an electrosurgical electrode shroud including
a hollow substantially cylindrical member having a first end portion and a second end
portion. The first end portion defines an opening which is configured and
dimensioned to receive an electrosurgical electrode assembly therein. The second
end portion defines an opening which is configured and dimensioned to receive an
electrode mounting portion of an electrosurgical instrument, and at least the second
end portion is formed of a substantially translucent material. As used herein,
translucent is intended to encompass clear or tinted material as well as material
capable of transmitting light while having sufficient diffusion to prevent perception of
distinct images.
Referring now in specific detail to the drawings in which like reference
numerals identify similar or identical elements throughout the several views, and
initially to FIG. 1 , one embodiment of an electrosurgical electrode utilized in
conjunction with the electrode shroud of the present disclosure is shown generally as
electrosurgical electrode 10. Electrosurgical electrode 10 includes an elongate electrically-conductive shaft
member 12 with a distal end 14 and a proximal end 16. Distal end 14 is configured to
receive electrosurgical currents from an electrosurgical apparatus 18. Although distal
end 14 may be formed in any shape known to one having ordinary skill in the art,
distal end 14 illustrated in FIG. 1 is flattened to form a thin, flat, slightly-flexible strip.
The tip of distal end 14 is rounded.
The center region of electrosurgical electrode 10 is coated with first and
second layers of electrically-insulating coatings 20 and 22, for example of rubber or
plastic, which may be of any desired thickness. Preferably, first layer of electrically-
insulating coating 20 is a PTFE coating and second layer of electrically-insulating
coating 22 is a polyolefin coating. Second layer of electrically-insulating coating 20 is
configured to at least partially overlap first layer of electrically-insulating coating 20.
Referring now to FIG. 2, another embodiment of an electrosurgical electrode
utilized in conjunction with the electrode shroud of the present disclosure is shown
generally as electrosurgical electrode 30. Electrosurgical electrode 30 also includes
an elongate electrically- conductive shaft member 32 with a distal end 34 and a
proximal end 36. Although distal end 34 may be formed in any shape known to one
having ordinary skill in the art, distal end 34 illustrated in FIG. 2 terminates in a
pointed tip similar to a needle. Distal end 34 is preferably coated with a silicon
coating such as disclosed in U.S. Patent No. 5, 702,387 to Arts et al. and assigned to
Valleylab Inc., Boulder, Colorado. FIG. 3 illustrates electrosurgical electrode 30 having a tip protector 44
positioned over distal end 34 and a shank protector 46 positioned over proximal end
36. Tip and shank protectors 44 and 46 protect the proximal and distal ends of
electrosurgical electrode 30 during shipping and storage.
Referring now to FIGS. 4 and 5, an embodiment of an electrosurgical electrode
shroud 50 in accordance with the present disclosure is illustrated. Electrosurgical
electrode shroud 50 is illustrated mounted on an electrosurgical electrode 30.
Shroud 50 Is formed as a hollow substantially cylindrical member having a first
end portion 52 and a second end portion 54. First end portion 52 defines an opening
which is configured and dimensioned to receive electrosurgical electrode assembly 30
therein. Reduced diameter section 63 and enlarged section 65 of first portion 52
facilitate gripping by the fingers of an operator during insertion and withdrawal of the
electrode 30 from a pencil. Preferably gripping is enhanced by a roughened or
textured surface 67 of section 63.
Second end portion 54 defines an opening which is configured and
dimensioned to receive an electrode mounting portion of an electrosurgical apparatus
(not shown). First end portion 52 and second end portion 54 are preferably joined by a
frustoconically shaped transition portion 53. The wall thickness of second end portion
54 is preferably in the range of about .030 inches to about .050 inches. The opening
in second end portion 54 is preferably molded to an angle in the range of about 5 to
about 10 degrees to facilitate smoother insertion of an electrosurgical apparatus into
the opening formed by second end portion 54. On a four inch electrode, a preferred length of shroud 50 is approximately 0.80 inches with first end portion 52 being
approximately 0.40 inches long, transition portion 53 being approximately 0.10 inches
long, and second end portion 54 being approximately 0.30 inches long.
To ensure a tight fit over the electrode assembly and over the electrosurgical
apparatus, shroud 50 is preferably formed of an elastomeric material. In a preferred
embodiment, the elastomeric material is a blue tinted thermoplastic material such as a
blue 73 shore A WCPC Dynaflex resin compound available from West Coast
Polymers. The resin compound is preferably formed of 49.875% GLS Dynaflex G270I
TR65 Shore A, 49.875% GLS Dynaflex G2780 TR82 Shore A (each available from
GLS Corporation - Thermoplastic Elastomers Division, McHenry, Illinois) and 0.25%
Clariant CPE 06539 TPR Royal Blue (available from Clariant Masterbatches Division,
Albion, Michigan). In a preferred embodiment, the shroud is molded over an
electrode, as illustrated in Fig. 6. It is also contemplated that the shroud may be
molded separately from the electrode. Fig. 6 illustrates an electrode 70 positioned
within a clamshell mold 74. Electrode 70 is restrained from over-insertion into the
mold by stop or alignment pin 78. A predetermined quantity of material for forming
shroud 76 is forced through ports within clamshell mold 74 to form shroud 76 on
electrode 70. A mandrel 72 is provided within the mold assembly to form the inner
surface of one end portion of shroud 76 such that the end portion has an inner
diameter which is greater than the outer diameter of electrode 70. Pin 78 and sleeve
ejector 79, a stripper plate, function as a pusher to push the shroud 76 and electrode
70 out of the mold assembly once the molding process is complete. Referring again to Figs. 4 and 5, one purpose of the shroud 50 is to prevent
over- insertion of the electrode into an electrosurgical instrument while also providing
the surgeon with the ability to visually confirm that the electrode is fully seated within
the electrosurgical apparatus. Thus, at least the second end portion 54 is preferably
formed of a substantially translucent material which will allow the surgeon to visually
confirm that the electrode is fully seated within the electrosurgical apparatus.
Although second end portion 54 may be formed of a clear material, it is preferred that
second end portion 54 is formed of a tinted translucent material.
The electrosurgical electrode shroud may further include a visual or tactile
indicator on the second end portion for indicating a depth of penetration of the
electrosurgical instrument within the second end portion. For example, second end
portion 54 may include a circumferential indicator line 56 scribed thereon to provide
the surgeon with a reference point against which the surgeon can gauge the depth of
penetration of the electrosurgical instrument within the second end portion 54 when
the electrosurgical instrument is viewed by the surgeon through the translucent
material. Indicator line 56 is preferably set off by arrow 57 formed on transition
portion 53. In addition, a tactile indicator may be added in the shape of a
circumferential ring formed on an inner surface of second end portion 54. As the
electrosurgical instrument is inserted into second end portion 54, the electrosurgical
instrument will contact ring thereby providing the surgeon with an indication as to the
depth of penetration.
Although the illustrative embodiments of the present invention have been described herein with reference to the accompanying drawings, it is to be understood
that the invention is not limited to those precise embodiments, and that various other
changes and modifications may be affected therein by one having ordinary skill in the
art without departing from the scope or spirit of the invention. All such changes and
modifications are intended to be included within the scope of the invention as defined
by the appended claims.

Claims

WHAT IS CLAIMED IS:
1. An electrosurgical electrode shroud comprising:
a hollow substantially cylindrical member having a first end
portion and a second end portion; said first end portion defining an opening which is
configured and dimensioned to receive an electrosurgical electrode assembly therein;
said second end portion defining an opening which is configured and dimensioned to
receive an electrode mounting portion of an electrosurgical instrument, wherein at
least said second end portion is formed of a substantially translucent material.
2. The electrosurgical electrode shroud as recited in claim 1 wherein an
inside diameter of the opening defined by the first end portion is configured to fit an
outside diameter of the electrosurgical electrode assembly received therein.
3. The electrosurgical electrode shroud as recited in claim 1 further
comprising a transition portion between said first end portion and said second end
portion.
4. The electrosurgical electrode shroud as recited in claim 3 wherein said
transition portion is frustoconical in shape.
5. The electrosurgical electrode shroud as recited in claim 1 further
comprising a visual indicator on said second end portion for indicating a depth of
penetration of the electrosurgical instrument within said second end portion.
6. The electrosurgical electrode shroud as recited in claim 1 further
comprising a tactile indicator on said second end portion for indicating a depth of
penetration of the electrosurgical instrument within said second end portion.
7. The electrosurgical electrode shroud as recited in claim 1 wherein an
inside diameter of the opening defined by the second end portion is substantially
equal to an outside diameter of the electrosurgical instrument received therein.
8. The electrosurgical electrode shroud as recited in claim 1 wherein the
shroud is formed of an elastomeric material.
9. The electrosurgical electrode shroud as recited in claim 1 wherein the
translucent material is substantially clear .
10. The electrosurgical electrode shroud as recited in claim 1 wherein the
translucent material is tinted.
11. In an electrosurgical electrode assembly having an elongate electrically-
conductive shaft member with a proximal end for receiving electrosurgical currents
from an electrosurgical instrument and a distal end, wherein the improvement
comprises:
an electrosurgical electrode shroud comprising a hollow
substantially cylindrical member having a first end portion and a second end portion;
said first end portion defining an opening which is configured and dimensioned to
receive the electrosurgical electrode assembly therein; said second end portion
defining an opening which is configured and dimensioned to receive an electrode
mounting portion of the electrosurgical instrument, wherein said second end portion is
formed of a substantially translucent material.
12. The electrosurgical electrode assembly as recited in claim 11 further
comprising at least one layer of insulating material formed on said electrically-
conductive shaft.
13. The electrosurgical electrode assembly as recited in claim 12 further
comprising a second layer of insulating material formed on said electrically-conductive
shaft and at least partially covering said at least one layer of insulating material,
wherein said second layer of insulating material includes a substantially conical
shaped portion to prevent over insertion of the shaft member into a source of
electrosurgical currents.
14. The electrosurgical electrode assembly as recited in claim 11 wherein
said distal end includes a needle-shaped tip portion capable of penetrating the skin of
a patient and exposed electrically for applying electrosurgical currents when said shaft
member is connected to a source of electrosurgical currents.
15. The electrosurgical electrode as recited in claim 11 wherein the
electrode shroud is co-axial with a longitudinal axis of said shaft member.
16. The electrosurgical electrode as recited in claim 11 wherein said distal
end is spade-shaped.
PCT/US2001/044544 2000-12-15 2001-11-28 Electrosurgical electrode shroud WO2002047568A1 (en)

Priority Applications (8)

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EP01270283A EP1341462B1 (en) 2000-12-15 2001-11-28 Electrosurgical electrode shroud
AU1791902A AU1791902A (en) 2000-12-15 2001-11-28 Electrosurgical electrode shroud
JP2002549146A JP4067403B2 (en) 2000-12-15 2001-11-28 Electrosurgical electrode shroud
AU2002217919A AU2002217919B2 (en) 2000-12-15 2001-11-28 Electrosurgical electrode shroud
CA2420663A CA2420663C (en) 2000-12-15 2001-11-28 Electrosurgical electrode shroud
DE60113150T DE60113150T2 (en) 2000-12-15 2001-11-28 ELECTRO-SURGICAL ELECTRODE PROTECTION COLLAR
US10/358,450 US6986768B2 (en) 2000-12-15 2003-02-04 Electrosurgical electrode shroud
US11/405,746 US7582244B2 (en) 2000-12-15 2006-04-18 Electrosurgical electrode shroud

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JP4509078B2 (en) 2010-07-21
US20050273098A1 (en) 2005-12-08
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CA2420663C (en) 2011-06-07
US6986768B2 (en) 2006-01-17
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AU1791902A (en) 2002-06-24
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US7582244B2 (en) 2009-09-01
JP4067403B2 (en) 2008-03-26
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DE60113150D1 (en) 2005-10-06
AU2002217919B2 (en) 2005-12-01
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US7060064B2 (en) 2006-06-13
US20040153055A1 (en) 2004-08-05
EP1607060B1 (en) 2007-06-06
ES2244551T3 (en) 2005-12-16
EP1341462B1 (en) 2005-08-31
DE60113150T2 (en) 2006-06-29
EP1341462A1 (en) 2003-09-10
US20060189977A1 (en) 2006-08-24
DE60128841T2 (en) 2008-02-07

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