EP3897432A1 - Electrode device for an electrosurgical instrument, electrosurgical instrument and method for producing an electrode device for an electrosurgical instrument - Google Patents
Electrode device for an electrosurgical instrument, electrosurgical instrument and method for producing an electrode device for an electrosurgical instrumentInfo
- Publication number
- EP3897432A1 EP3897432A1 EP19816664.7A EP19816664A EP3897432A1 EP 3897432 A1 EP3897432 A1 EP 3897432A1 EP 19816664 A EP19816664 A EP 19816664A EP 3897432 A1 EP3897432 A1 EP 3897432A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- electrosurgical instrument
- oxide
- electrode device
- platinum wire
- 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- Withdrawn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
- A61B18/12—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
- A61B18/042—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating using additional gas becoming plasma
-
- 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
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00526—Methods of manufacturing
-
- 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
- A61B2018/00089—Thermal conductivity
-
- 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
- A61B2018/00577—Ablation
- A61B2018/00583—Coblation, i.e. ablation using a cold plasma
-
- 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
- A61B2018/00589—Coagulation
-
- 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
- A61B2018/1407—Loop
-
- 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
- A61B2018/1412—Blade
-
- 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
- A61B2218/00—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2218/001—Details of surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body having means for irrigation and/or aspiration of substances to and/or from the surgical site
- A61B2218/002—Irrigation
Definitions
- Electrode device for an electrosurgical instrument
- the invention is based on a device or a method according to the type of the independent claims.
- High-frequency electrical alternating current can be used in electrosurgery in order to produce a thermal effect in a targeted manner. This is done by means of an electrode by generating Joule heat as a result of the HF current flowing through the tissue. In this way, for example, bleeding in surgical
- Tissue cuts can be stopped or prevented.
- US6013076 describes an electrosurgical instrument for producing the thermal effect in tissue.
- Electrode touches the tissue US2004054366 describes such a plasma surgical instrument.
- Electrode device for an electrosurgical instrument a electrosurgical instrument, using an oxide reinforced
- an electrode which is formed from an oxide-reinforced platinum wire is advantageous for electrosurgical applications due to its mechanical strength, its temperature resistance, its connection properties and its oxidation resistance.
- the mechanical strength of the oxide-reinforced platinum wire advantageously enables high wire strength, and thus deformation without resetting.
- the oxidation resistance of the platinum wire is also advantageous with regard to erosion of the electrode, which advantageously increases the service life of the electrode, which means, for example, that no replacement of the electrode is required during a surgical procedure.
- the electrode device for an electrosurgical instrument.
- the electrode device comprises an electrode for producing a thermal effect in a tissue.
- the electrode is formed from an oxide-reinforced platinum wire.
- electrosurgery can be understood as high-frequency surgery, with plasma surgery as a sub-area of electrosurgery.
- the electrosurgical instrument can be, for example
- Loop electrode for tissue resection, or a probe for argon plasma coagulation can be used as
- electrosurgical instrument or as an electrosurgical
- Instrument component can be realized.
- the thermal tissue effect that can be achieved by means of the electrode can have a thermal bandwidth of one Coagulation at temperatures above approx. 60 degrees Celsius, via a separation at temperatures greater than 100 degrees Celsius up to evaporation
- oxide-reinforced platinum wire can also be referred to as oxide dispersion-hardened platinum wire.
- the electrode device can be a
- a cavity can be formed in the insulation element.
- a first end of the electrode can be in the cavity
- the insulation element can, for example, be formed from a ceramic material such as aluminum oxide, zirconium oxide or a mixed form thereof. Ceramic components are proven as
- the cavity can be formed in a ceramic green body, for example by means of injection molding, 3D printing or pressing.
- Platinum wire by means of the oxide reinforcement can advantageously avoid cracks and unwanted loosening of the components at changing operating temperatures. This enables a stable connection of the ceramic insulation element to the electrode and thereby advantageously increases safety when using the electrode device.
- the insulation element and the electrode can be non-positively connected. If the insulation element is formed from ceramic, for example, the cavity can have an inner diameter in a green state of the ceramic insulation element, which is around one
- Isolation element is increased. By shrinking the ceramic
- the insulation element on the first end of the platinum wire after the thermal manufacturing process can be non-positively connected to the electrode.
- the frictional connection can, for example, be additionally supported cohesively by placing an order
- a binder component of the platinum paste can be compatible with a binder component of the ceramic insulation element in the green state.
- the electrode can be a ceramic
- the ceramic matrix reinforcement can not only be a local reinforcement, but the electrode can have an entire length via the matrix reinforcement.
- oxide-ceramic particles for example made of zirconium oxide
- the oxide-strengthened platinum wire can, for example, consist of over 90 percent, for example 95 percent or 99 percent, of platinum or a platinum alloy, for example with rhodium, gold or palladium.
- the remaining mass fraction of the oxide-strengthened platinum wire can consist of one or more metals oxidized with oxygen, for example of cerium (Ce), zirconium (Zr), scandium (Sc) or yttrium (Y).
- Ceramic solidification is advantageous for mechanical solidification of the platinum wire and thus the electrode.
- the ceramic matrix reinforcement advantageously increases one
- the diameter of the electrode can be smaller than one millimeter, in particular smaller than 0.6 millimeters.
- the electrode can have a uniform diameter.
- the diameter can be, for example, 0.2 millimeters, or 0.3 millimeters or 0.4 millimeters or 0.5 millimeters.
- the electrode can advantageously be designed as a miniaturized instrument or as a miniaturized instrument component for the field of electrosurgery and plasma surgery.
- the electrode can be designed as a loop electrode or as a needle electrode or as a leaf electrode or as a knife electrode or as a coagulation electrode.
- the electrode can thus advantageously be shaped differently depending on the use of the electrode for the electrosurgical instrument.
- the electrosurgical instrument can be designed, for example, as a resectoscope or as an electrosurgical unit for monopolar or bipolar coagulation be.
- the electrosurgical can be used as a plasma surgical instrument
- Instrument can be designed, for example, as a probe for argon plasma coagulation.
- the plasma device can be used to ignite the plasma without contacting the tissue, thereby causing an undesired
- Support element can be realized due to the increased strength of the oxide-reinforced platinum wire of the electrode.
- a method for producing an electrode device for an electrosurgical instrument has at least one step of providing an electrode formed from an oxide-reinforced platinum wire for producing a thermal effect in a tissue. Furthermore, the method has a step of providing an insulation element in which a cavity is formed. The method also includes a step of inserting a first end of the electrode into the cavity. In the insertion step, the electrode is non-positively connected to the insulation element around the electrosurgical instrument
- Figure 1 is a schematic representation of an electrode device for an electrosurgical instrument according to an embodiment.
- FIG. 2 shows a schematic illustration of a part of an electrode made of oxide-reinforced platinum wire according to an exemplary embodiment
- FIG. 3 shows a schematic illustration of an electrosurgical instrument with an electrode device according to an exemplary embodiment
- Fig. 4 is a flowchart of a method for manufacturing a
- Electrode device for an electrosurgical instrument according to an embodiment.
- advantageous exemplary embodiments of the present invention are shown in the various figures
- the electrode device 100 comprises an electrode 105 for producing a thermal effect in a tissue.
- the electrode 105 is formed from an oxide-reinforced platinum wire.
- the electrode 105 shown here with the oxide-reinforced platinum wire can be used as in electrosurgery and in plasma surgery.
- the length of the electrode 105 shown here is an example, the length and the shape of the electrode 105 can be shaped depending on the use of the electrode 105.
- An exemplary material composition is described with reference to FIG. 2, which shows a section 112 of the electrode 105.
- the electrode device 100 also has an insulation element 110.
- a cavity 115 is formed in the insulation element 110.
- a first end of the electrode 105 is received in the cavity 115.
- the insulation element 110 is formed here from a ceramic material, for example from aluminum oxide, zirconium oxide or a mixed form from the two ceramics mentioned.
- the oxide-reinforced platinum wire of the electrode 105 has advantageous connection properties with respect to a connection to the ceramic materials from which the
- Isolation element 110 is formed according to an embodiment.
- the oxide reinforcement of the platinum wire makes it possible to use a thermal
- the outer shape of the Isolation element 110 is exemplary and is used depending on the use of the
- Electrode 105 and molded the electrosurgical instrument are Electrode 105 and molded the electrosurgical instrument.
- the use of the oxide-reinforced platinum wire for the electrode 105 is advantageous in electrosurgery or plasma surgery.
- the use of the electrode 105 shown here made of oxide-reinforced platinum has the advantage of increased high-temperature resistance and increased oxidation resistance. This is particularly advantageous when the electrode device 100 is used in plasma surgery: the resistance to oxidation leads to an improved plasma ignition property, as a result of which tissue contact can be avoided when plasma is ignited, which prevents unwanted tissue damage.
- the plasma is stable plasma and not pulsating or interrupted, which enables homogeneous operation with the electrode device 100.
- the oxidation resistance of the platinum reduces erosion, which is advantageous with regard to the period of use of the electrode 105 and helps to avoid changing the electrode 105 during an operation.
- the electrode 105 can be connected stably to a ceramic component, such as the insulation element 110 formed, for example, from ceramic.
- the insulation element 110 and the electrode 105 are non-positively connected.
- the insulation element 110 to connect the insulation element 110 to the electrode in a force-locking manner
- Ceramic green body produced as the basis for the insulation element 110 is ceramic green body produced as the basis for the insulation element 110.
- ceramic powder is mixed with binder components in order to obtain a plasticizable mass.
- the cavity 115 is then formed in the green body, for example by means of pressing, injection molding or 3D printing.
- the inside diameter of the cavity 115 has a dimension which is increased by a shrinkage factor compared to the dimension of the cavity 115 in the sintered state.
- the dimension of the inner diameter of the cavity 115 in the sintered state is smaller by a certain value than the dimension of the diameter of the electrode formed from the oxide-reinforced platinum wire at room temperature.
- the electrode 105 has a diameter that is less than one millimeter, in particular less than 0.6 millimeter.
- the oxide-reinforced platinum wire of the electrode 105 has, for example, a uniform diameter throughout.
- the diameter can be 0.2 millimeters, or 0.3 millimeters, or 0.4 millimeters or 0.5 millimeters. This dimension of the diameter advantageously enables the
- miniaturized instrument or as a miniaturized instrument component for the field of electrical and plasma surgery.
- the electrode 105 is designed as a needle electrode.
- the electrode 105 can also be designed as a loop electrode or as a leaf electrode or as a knife electrode.
- the oxide-reinforced platinum wire is shaped in the appropriate shape to form electrode 105.
- FIG. 2 shows a schematic illustration of a part of an electrode 105 made of oxide-reinforced platinum wire according to an exemplary embodiment.
- the section 112 of the oxide-reinforced platinum wire marked in FIG. 1 is shown as part of the electrode 105.
- the electrode 105 has a ceramic matrix reinforcement. The ceramic
- Matrix reinforcement is shown here by way of example using the cutout 112, but can extend over the entire length of the electrode 105.
- a mechanical solidification is achieved by admixing oxide-ceramic particles in the platinum matrix, as a result of which the electrode 105 has a high wire strength having. This is advantageous in terms of deformation of the oxide-reinforced platinum wire without resetting.
- the ceramic matrix reinforcement of the electrode 105 is achieved by admixing oxide particles 205 into a platinum matrix 210.
- the platinum matrix 210 for example, is admixed with zirconium oxide as oxide particles 205.
- the electrode 105 consists, for example, of over 90 percent, that is to say 95 percent or 97 percent or 99 percent of platinum or a platinum alloy, for example with rhodium, gold or palladium. This is the mass fraction of the platinum matrix 210.
- the remaining mass fraction of the electrode 105 consists of the oxide particles 205, that is to say of one or more metals oxidized with oxygen, for example of cerium (Ce), zirconium (Zr), scandium (Sc) or yttrium (Y) ).
- the admixing of oxide-ceramic particles 205 into the platinum matrix 210 also results in mechanical strengthening
- the ceramic matrix reinforcement of the platinum matrix 210 is also advantageous for coupling (adherence) of reaction solders, soft and hard solders of different metals to oxide and non-oxide ceramics and the oxide-ceramic-reinforced platinum wire of the electrode 105.
- Fig. 3 shows a schematic representation of an electrosurgical
- Instruments 300 with an electrode device 100 according to one
- the electrode device 100 shown here is similar or corresponds to the exemplary embodiment described with reference to FIG. 1 and accordingly also includes this in addition to the electrode 105
- the electrosurgical instrument 300 shown here can also be implemented as a plasma surgical instrument.
- the electrode 105 is surrounded by a sleeve 320 for conducting a fluid, for example argon.
- the electrosurgical instrument 300 can also be implemented with the electrode 105 without a further support element, due to the increased strength of the oxide-reinforced platinum wire of the electrode 105.
- the electrosurgical instrument 300 shown here is also available as
- the electrosurgical instrument 300 has a housing 330 with electrical connections and optionally a connection for supplying a fluid that can be used for plasma-surgical surgery.
- 4 shows a flowchart of a method 400 for producing a
- Electrode device for an electrosurgical instrument according to an embodiment.
- the method 400 described here is a
- Embodiment of the above-mentioned electrode device can be produced.
- the method 400 comprises a step 405 of providing an electrode formed from an oxide-reinforced platinum wire for producing a thermal effect in a tissue.
- the method 400 comprises a step 410 of providing an insulation element in which a cavity is formed, and a step 415 of inserting a first end of the electrode into the cavity.
- the electrode is non-positively connected to the insulation element in order to make the electrosurgical
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Otolaryngology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Plasma & Fusion (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (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
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018222342.4A DE102018222342A1 (en) | 2018-12-19 | 2018-12-19 | Electrode device for an electrosurgical instrument, electrosurgical instrument and method for manufacturing an electrode device for an electrosurgical instrument |
PCT/EP2019/083939 WO2020126540A1 (en) | 2018-12-19 | 2019-12-06 | Electrode device for an electrosurgical instrument, electrosurgical instrument and method for producing an electrode device for an electrosurgical instrument |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3897432A1 true EP3897432A1 (en) | 2021-10-27 |
Family
ID=68808384
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19816664.7A Withdrawn EP3897432A1 (en) | 2018-12-19 | 2019-12-06 | Electrode device for an electrosurgical instrument, electrosurgical instrument and method for producing an electrode device for an electrosurgical instrument |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3897432A1 (en) |
DE (1) | DE102018222342A1 (en) |
WO (1) | WO2020126540A1 (en) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6013076A (en) | 1996-01-09 | 2000-01-11 | Gyrus Medical Limited | Electrosurgical instrument |
US5925039A (en) * | 1996-06-12 | 1999-07-20 | Iti Medical Technologies, Inc. | Electrosurgical instrument with conductive ceramic or cermet and method of making same |
US7276063B2 (en) | 1998-08-11 | 2007-10-02 | Arthrocare Corporation | Instrument for electrosurgical tissue treatment |
US7073246B2 (en) * | 1999-10-04 | 2006-07-11 | Roche Diagnostics Operations, Inc. | Method of making a biosensor |
EP1259183B1 (en) * | 2000-02-28 | 2009-09-16 | Conmed Corporation | Electrosurgical blade with direct adhesion of silicone coating |
US6475214B1 (en) * | 2000-05-01 | 2002-11-05 | Biosense Webster, Inc. | Catheter with enhanced ablation electrode |
US10045761B2 (en) * | 2012-12-31 | 2018-08-14 | Tdm Surgitech, Inc. | Systems, apparatus and methods for tissue dissection |
-
2018
- 2018-12-19 DE DE102018222342.4A patent/DE102018222342A1/en not_active Withdrawn
-
2019
- 2019-12-06 WO PCT/EP2019/083939 patent/WO2020126540A1/en unknown
- 2019-12-06 EP EP19816664.7A patent/EP3897432A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
DE102018222342A1 (en) | 2020-06-25 |
WO2020126540A1 (en) | 2020-06-25 |
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