WO2010137920A2 - Electrode needle of radio frequency ablation device - Google Patents

Electrode needle of radio frequency ablation device Download PDF

Info

Publication number
WO2010137920A2
WO2010137920A2 PCT/KR2010/003430 KR2010003430W WO2010137920A2 WO 2010137920 A2 WO2010137920 A2 WO 2010137920A2 KR 2010003430 W KR2010003430 W KR 2010003430W WO 2010137920 A2 WO2010137920 A2 WO 2010137920A2
Authority
WO
WIPO (PCT)
Prior art keywords
electrode
markers
electrode needle
guide tube
electrode pin
Prior art date
Application number
PCT/KR2010/003430
Other languages
French (fr)
Other versions
WO2010137920A3 (en
Inventor
Kyong-Min Shin
Kyung-Hoon Shin
Kil-Soo Kim
Min-Woo Lee
Original Assignee
Taewoong Medical Co., Ltd.
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 Taewoong Medical Co., Ltd. filed Critical Taewoong Medical Co., Ltd.
Publication of WO2010137920A2 publication Critical patent/WO2010137920A2/en
Publication of WO2010137920A3 publication Critical patent/WO2010137920A3/en

Links

Images

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
    • A61B18/1477—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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H39/00—Devices for locating or stimulating specific reflex points of the body for physical therapy, e.g. acupuncture
    • A61H39/04—Devices for pressing such points, e.g. Shiatsu or Acupressure
    • 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
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • 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
    • A61B2018/00595—Cauterization
    • 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
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A61B2090/3925—Markers, e.g. radio-opaque or breast lesions markers ultrasonic
    • 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
    • A61B90/39—Markers, e.g. radio-opaque or breast lesions markers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/06—Electrodes for high-frequency therapy

Definitions

  • the present invention relates to an electrode needle of a radio frequency ablation
  • thermotherapy including a high frequency thermotherapy device and a micro ablation device
  • RFA radio frequency
  • an electrode needle of an RFA device which is inserted into a human body to cauterize a lesion portion by using RF (including high frequency and microwave) heat, capable of easily checking the position or depth of the electrode needle for a medical operation within the human body.
  • a general RFA device is used to heat a lesion portion such as cancerous tissue, or the like, with RF to cauterize it to death.
  • TACE Transarterial chemoembolization
  • PEIT Percutaneous Ethanol Injection
  • PEIT Percutaneous Ethanol Injection
  • Systemic chemotherapy partial heat treatment
  • partial heat treatment is reported to be the most effective.
  • Partial heat treatment includes RFA (including microwave ablation), laser ablation, and the like, and among them, thermal treatment using RF (including high frequency and microwave) is favored by doctors or patients because it is considered to be the most effective treatment.
  • RFA including microwave ablation
  • RF including high frequency and microwave
  • the electrode device for RFA is configured such that an electrode needle radiating
  • RF is assembled to have a grip body (i.e., a body to be gripped), a cooling line for cir- culatively supplying cooling water into the interior of the grip body and the electrode needle, and an insulating portion is formed on an outer circumferential surface of the electrode needle. Accordingly, the electrode needle passes through the skin of a human body so as to be inserted into the lesion portion.
  • the electrode needle inserted into the lesion portion is heated to radiate RF, and the lesion portion, such as the cancerous tissue or the like, is cauterized and coagulated to death by the RF radiated from the electrode needle and heat.
  • a method for accurately recognizing the position of a medical (or surgical) operation by using imaging equipment for example, an ultrasound imaging device, or by irradiating X-rays allowing for the ascertaining of degree of insertion of the electrode needle when the electrode needle is inserted for a medical operation, and an improved electrode needle having a marker attached to facilitate indicating the position of a guide tube capable of variably adjusting the length of an energized portion (exposed part) of an electrode pin at an electrode having the guide tube.
  • An aspect of the present invention provides an electrode needle of a radio frequency ablation (RFA) device capable of allowing the position of a medical operation of an electrode pin with markers formed thereon and a guide tube to be easily recognized according to a radiation non-transmissive operation and diffused-reflection operation of ultrasonic waves when X-rays are applied or ultrasonic waves are radiated by using ultrasound imaging equipment from the exterior of a human body.
  • RFID radio frequency ablation
  • Another aspect of the present invention is to form a marker by bending a thin plate in a band- like shape or winding a wire to thus increase the utilization of the marker according to its usage conditions.
  • Another aspect of the present invention is to attach a marker to a guide tube to facilitate the indication of the position of the guide tube, which is configured such that the length of an energized portion of an electrode pin can be variably adjusted, thus allowing for the easy recognition of an operational depth of the electrode needle and the range of energization.
  • an electrode needle of an RFA device which is inserted into a lesion portion to cauterize the lesion portion by using RF radiated from the RFA device, wherein an electrode pin having a tip end is coupled to one end of an electrode main body that can be held or grasped by a user's hand, one or more markers coated or plated with a radiation non-transmissive material thereon are inserted into or wound around an outer circumferential surface of the electrode pin and then fixedly bonded by using a polymer adhesive, regions, excluding an end portion, of the electrode pin are wrapped (or covered), along with the markers, with an insulating tube, and heat is then applied thereto to allow the insulating tube to be contracted to fixedly compress the markers, whereby the position of the electrode pin can be easily recognized according to a non-transmissive operation when X-rays are irradiated to the marker or according to a diffused-reflection operation of ultrasonic waves when the marker is observed
  • the position of a medical operation of an electrode pin and a guide tube with markers formed thereon can be easily recognized according to a radiation non-transmissive operation and diffused-reflection operation of ultrasonic waves when X-rays are applied or ultrasonic waves are radiated by using ultrasound imaging equipment from the exterior of a human body.
  • the marker is formed by bending a thin plate in a band- like shape or winding a wire, utilization of the marker can be increased according to its usage conditions.
  • the marker is attached to a guide tube to facilitate the indication of the position of the guide tube, which is configured such that the length of an energized portion of an electrode pin can be variably adjusted, an operational depth of the electrode needle and the range of energization can be easily recognized.
  • FIG. 1 is an overall perspective view of an electrode needle connected to a radio frequency ablation (RFA) device according to an exemplary embodiment of the present invention
  • FIG. 2 is an overall front view of the electrode needle with a guide tube connected to the RFA device according to an exemplary embodiment of the present invention
  • FIG. 3 is an enlarged perspective view of the electrode needle of FIG. 1 ;
  • FIG. 4a is a view showing the process of bonding a marker in a band- like shape to an electrode pin of the electrode needle of FIG. 1 ;
  • FIG. 4b is a sectional view taken along line A-A in FIG. 4a;
  • FIG. 5a is a view showing the process of fixing the marker in the coil-like shape to the electrode pin of the electrode needle of FIG. 1 by using an insulating tube;
  • FIG. 5b is a sectional view taken along line B-B in FIG. 5a;
  • FIG. 6 is a partially enlarged front view of the guide tube of FIG. 2;
  • FIG. 7a is a view showing the process of fixing the marker in the band-like shape to the guide tube by using a polymer adhesive
  • FIG. 7b is a sectional view taken along line C-C in FIG. 7a;
  • FIG. 8a is a view showing the process of fixing the marker in a coil-like shape to the guide tube by using a polymer adhesive
  • FIG. 8b is a sectional view taken along line D-D in FIG. 8a;
  • FIG. 9a is a view showing the process of fixing the marker in the band-like shape to the guide tube by using an insulating tube
  • FIG. 9b is a sectional view taken along line E-E in FIG. 9a;
  • Fig. 10a is a view showing the process of fixing the marker in the coil-like shape to the guide tube by using an insulating tube;
  • FIG. 10b is a sectional view taken along line F-F in FIG. 10a;
  • FIG. 11 is a view showing how the electrode needle of FIG. 1 is used for a medical operation.
  • FIG. 12 is a view showing how the electrode needle of FIG. 2 is used by using a guide tube for a medical operation. Best Mode for Carrying out the Invention
  • RFA radio frequency radiated radiated from the RFA device
  • RFA radio frequency radiated radiated from the RFA device
  • an electrode main body 11 an electrode pin 12
  • markers 20 fixedly inserted to or wound around an outer circumferential surface of the electrode pin 12
  • an insulating tube 13 coupled to wrap the outer circumferential surface of the electrode pin 12 and the markers 20 therein.
  • the electrode main body 11 is configured to allow a user to hold it with his hand and connected to the RFA device (not shown) by using an electrode line 11a through which RF and cooling water are supplied.
  • one end of the electrode line 1 Ia is connected to the electrode main body 11, and a connector 1 Ib, which is connected to an RF generator, is connected to the other end of the electrode line 11a.
  • the electrode pin 12 having a tip end (i.e., having such a form that its end is acute), is connected to be coupled to one end of the electrode main body 11 such that it can be provided with RF and cooling water.
  • the electrode pin 12 has a hollow therein to allow cooling water to circulate therein to reduce heat when RF heat is generated.
  • One or more markers 20, coated with a non-transmissive (or opaque) material on its surface, are formed to be inserted into or wound around the outer circumferential surface of the electrode pin 12.
  • the markers 20 are configured by bending a thin plate coated or plated with a radiation non-transmissive material thereon in the shape of a band and inserting it into the outer circumferential surface of the electrode pin 12.
  • the marker 20 may also be configured by winding a wire 21 coated or plated with a radiation non-transmissive material thereon on the outer circumferential surface of the electrode pin 12.
  • the marker 20 formed on the electrode pin 12 is fixed to the electrode pin 12 by using a polymer adhesive (P) in order to prevent the marker 20 from moving on the electrode pin 12.
  • P polymer adhesive
  • An insulating tube 13 wraps the regions, excluding an end portion, of the outer circumferential surface of the electrode pin 12 and the markers 20 to insulate them.
  • the insulating tube 13 is configured to prevent human body tissues, other than the lesion portion, from being cauterized when RF is transmitted to the electrode pin 12.
  • the electrode needle 100 of the RFA device which is to be inserted into a lesion portion to cauterize the lesion portion by using RF radiated from the RFA device, includes the electrode main body 11, the electrode pin 12, a guide tube 14 formed as a polymer tube or a metal pipe and inserted into the outer circumferential surface of the electrode pin 12 such that it moves up and down on the outer circumferential surface of the electrode pin 12, and the markers 20 inserted into or wound around the outer circumferential surface of the guide tube 14.
  • the electrode main body 11 is configured to allow a user to hold it with his hand and connected to the RFA device (not shown) by using an electrode line 11a through which RF and cooling water are supplied.
  • one end of the electrode line 1 Ia is connected to the electrode main body 11, and a connector 1 Ib, which is connected to an RF generator, is connected to the other end of the electrode line 11a.
  • the electrode pin 12 having a tip end (i.e., having such a form that its end is acute), is connected to be coupled to one end of the electrode main body 11 such that it can be provided with RF and cooling water.
  • the electrode pin 12 has a hollow therein to allow cooling water to circulate therein to reduce heat when RF heat is generated.
  • the guide tube 14 wraps the regions, excluding an end portion, of the electrode pin
  • the guide tube 14 is drawn out of the electrode main body 11 or inserted into the electrode main body 11 to adjust the length of an energized portion of an electrode pin 12.
  • the markers 20 coated or plated with a radiation non-transmissive material on its surface is formed on the outer circumferential surface of the guide tube 14.
  • One or more markers 20 may be inserted into or wound around the outer circumferential surface of the guide tube 14.
  • the markers 20 are configured by bending a thin plate coated or plated with a radiation non-transmissive material thereon in the shape of a band and inserting it into the outer circumferential surface of the guide tube 14.
  • the marker 20 may also be configured by winding a wire 21 coated or plated with a radiation non-transmissive material thereon on the outer circumferential surface of the guide tube 14.
  • the marker 20 when the guide tube 14 is a polymer tube, the marker 20 may be fixedly bonded to the guide tube 20 with a polymer adhesive (P) which is harmless to the human body, and when the guide tube 14 is manufactured as the polymer tube, it can provide an insulating function, the same function as that of the insulating tube 13.
  • P polymer adhesive
  • the electrode needle 100 is configured to facilitate recognition of the position of the electrode pin 12 or the guide tube 14 according to a non-transmissive operation when X-ray is irradiated to the marker 20 or according to a diffused-reflection operation of ultrasonic waves when the marker 20 is observed by using ultrasound imaging equipment, in a state in which the electrode needle 100 is inserted for a medical operation.
  • the connector 1 Ib connected to the electrode line 1 Ia is connected to an RF generator (not shown), a sort of RFA device.
  • cooling water is circulatively supplied into the interior of the electrode pin 12, the position of a lesion portion 200 is checked, and the electrode pin 12 of the electrode needle 100 is inserted into the interior of the human body such that the electrode pin 12 protruded from the end of the insulating tube 13 is inserted into the lesion portion 200 such as a cancerous tissue.
  • the marker 20 is positioned at the inner side of the human body as the insulating tube 13 is inserted in the process of the medical procedure of the electrode needle 100.
  • the insertion depth or position of the electrode pin 12 or the insulating tube 13 can be simply checked by irradiating X-rays thereupon.
  • the electrode pin 12 is inserted along with the guide tube 14, and in this case, the length of an energized portion of the electrode pin 12 can be adjusted by adjusting the length of an exposed portion of the guide tube 14 by operating the switch l ie according to the area or depth degree of the lesion portion 200, in order to adjust the range of cauterization and, because the position of the marker 20 formed on the guide tube 14 can be accurately recognized, whether or not the insertion is precisely performed for cauterization can be recognized.

Abstract

There is provided an electrode needle of an RFA device, which is inserted into a lesion portion to cauterize the lesion portion by using RF radiated from the RFA device, wherein an electrode pin having a tip end is coupled to one end of an electrode main body that can be held or grasped by a user's hand, one or more markers coated or plated with a radiation non-transmissive material thereon are inserted into or wound around an outer circumferential surface of the electrode pin, regions, excluding an end portion, of the electrode pin are wrapped, along with the markers, with an insulating tube, and heat is then applied thereto to allow the insulating tube to be contracted to fixedly compress the markers, whereby the position of the electrode pin can be easily recognized in a state in which the electrode needle is inserted for a medical operation.

Description

ELECTRODE NEEDLE OF RADIO FREQUENCY ABLATION DEVICE
The present invention relates to an electrode needle of a radio frequency ablation (RFA) device (including a high frequency thermotherapy device and a micro ablation device) and, more particularly, to an electrode needle of an RFA device, which is inserted into a human body to cauterize a lesion portion by using RF (including high frequency and microwave) heat, capable of easily checking the position or depth of the electrode needle for a medical operation within the human body.
A general RFA device is used to heat a lesion portion such as cancerous tissue, or the like, with RF to cauterize it to death.
When cancerous tissue, or the like, is generated in organs such as the liver or the thyroid gland, it is treated with a surgical operation method and a non-surgical operation method.
Recently, the non-surgical operation method has been commonly used. Transarterial chemoembolization (TACE), Percutaneous Ethanol Injection (PEIT), Systemic chemotherapy, partial heat treatment (local thermotherapy), and the like, are known as common non-surgical operation methods, and among them, partial heat treatment is reported to be the most effective.
Partial heat treatment includes RFA (including microwave ablation), laser ablation, and the like, and among them, thermal treatment using RF (including high frequency and microwave) is favored by doctors or patients because it is considered to be the most effective treatment.
The electrode device for RFA is configured such that an electrode needle radiating RF is assembled to have a grip body (i.e., a body to be gripped), a cooling line for circulatively supplying cooling water into the interior of the grip body and the electrode needle, and an insulating portion is formed on an outer circumferential surface of the electrode needle. Accordingly, the electrode needle passes through the skin of a human body so as to be inserted into the lesion portion.
Then, as power is applied to the electrode needle from an external source, the electrode needle inserted into the lesion portion is heated to radiate RF, and the lesion portion, such as the cancerous tissue or the like, is cauterized and coagulated to death by the RF radiated from the electrode needle and heat.
However, when the related art electrode needle for RFA is inserted into the lesion portion while being observed by imaging equipment, for example, an ultrasound imaging device or X-ray, an operator (i.e., a person who provides a medical treatment or performs a medical operation) cannot accurately recognize how deep the electrode needle has been inserted, being exposed to the possibility that he or she will insert the electrode needle either too deeply or too shallowly, as well as the possibility that he or she will even insert the electrode needle into the lesion portion several times, depending on his or her experience or know-how. That is, the operation is not smoothly performed.
Thus, a method for accurately recognizing the position of a medical (or surgical) operation by using imaging equipment, for example, an ultrasound imaging device, or by irradiating X-rays allowing for the ascertaining of degree of insertion of the electrode needle when the electrode needle is inserted for a medical operation, and an improved electrode needle having a marker attached to facilitate indicating the position of a guide tube capable of variably adjusting the length of an energized portion (exposed part) of an electrode pin at an electrode having the guide tube.
An aspect of the present invention provides an electrode needle of a radio frequency ablation (RFA) device capable of allowing the position of a medical operation of an electrode pin with markers formed thereon and a guide tube to be easily recognized according to a radiation non-transmissive operation and diffused-reflection operation of ultrasonic waves when X-rays are applied or ultrasonic waves are radiated by using ultrasound imaging equipment from the exterior of a human body.
Another aspect of the present invention is to form a marker by bending a thin plate in a band-like shape or winding a wire to thus increase the utilization of the marker according to its usage conditions.
Another aspect of the present invention is to attach a marker to a guide tube to facilitate the indication of the position of the guide tube, which is configured such that the length of an energized portion of an electrode pin can be variably adjusted, thus allowing for the easy recognition of an operational depth of the electrode needle and the range of energization.
According to an aspect of the present invention, there is provided an electrode needle of an RFA device, which is inserted into a lesion portion to cauterize the lesion portion by using RF radiated from the RFA device, wherein an electrode pin having a tip end is coupled to one end of an electrode main body that can be held or grasped by a user's hand, one or more markers coated or plated with a radiation non-transmissive material thereon are inserted into or wound around an outer circumferential surface of the electrode pin and then fixedly bonded by using a polymer adhesive, regions, excluding an end portion, of the electrode pin are wrapped (or covered), along with the markers, with an insulating tube, and heat is then applied thereto to allow the insulating tube to be contracted to fixedly compress the markers, whereby the position of the electrode pin can be easily recognized according to a non-transmissive operation when X-rays are irradiated to the marker or according to a diffused-reflection operation of ultrasonic waves when the marker is observed by using ultrasound imaging equipment in a state in which the electrode needle is inserted for a medical operation.
As described above, the position of a medical operation of an electrode pin and a guide tube with markers formed thereon can be easily recognized according to a radiation non-transmissive operation and diffused-reflection operation of ultrasonic waves when X-rays are applied or ultrasonic waves are radiated by using ultrasound imaging equipment from the exterior of a human body.
Because the marker is formed by bending a thin plate in a band-like shape or winding a wire, utilization of the marker can be increased according to its usage conditions.
Also, because the marker is attached to a guide tube to facilitate the indication of the position of the guide tube, which is configured such that the length of an energized portion of an electrode pin can be variably adjusted, an operational depth of the electrode needle and the range of energization can be easily recognized.
FIG. 1 is an overall perspective view of an electrode needle connected to a radio frequency ablation (RFA) device according to an exemplary embodiment of the present invention;
FIG. 2 is an overall front view of the electrode needle with a guide tube connected to the RFA device according to an exemplary embodiment of the present invention;
FIG. 3 is an enlarged perspective view of the electrode needle of FIG. 1;
FIG. 4a is a view showing the process of bonding a marker in a band-like shape to an electrode pin of the electrode needle of FIG. 1;
FIG. 4b is a sectional view taken along line A-A in FIG. 4a;
FIG. 5a is a view showing the process of fixing the marker in the coil-like shape to the electrode pin of the electrode needle of FIG. 1 by using an insulating tube;
FIG. 5b is a sectional view taken along line B-B in FIG. 5a;
FIG. 6 is a partially enlarged front view of the guide tube of FIG. 2;
FIG. 7a is a view showing the process of fixing the marker in the band-like shape to the guide tube by using a polymer adhesive;
FIG. 7b is a sectional view taken along line C-C in FIG. 7a;
FIG. 8a is a view showing the process of fixing the marker in a coil-like shape to the guide tube by using a polymer adhesive;
FIG. 8b is a sectional view taken along line D-D in FIG. 8a;
FIG. 9a is a view showing the process of fixing the marker in the band-like shape to the guide tube by using an insulating tube;
FIG. 9b is a sectional view taken along line E-E in FIG. 9a;
Fig. 10a is a view showing the process of fixing the marker in the coil-like shape to the guide tube by using an insulating tube;
FIG. 10b is a sectional view taken along line F-F in FIG. 10a;
FIG. 11 is a view showing how the electrode needle of FIG. 1 is used for a medical operation; and
FIG. 12 is a view showing how the electrode needle of FIG. 2 is used by using a guide tube for a medical operation.
Hereinafter, an exemplary embodiment of the present invention will now be described with reference to the accompanying drawings.
As shown in FIGS. 1 and 3, an electrode needle 100 of a radio frequency ablation (RFA) device according to an exemplary embodiment of the present invention, which is to be inserted into a lesion portion to cauterize the lesion portion by using RF radiated from the RFA device, includes an electrode main body 11, an electrode pin 12, markers 20 fixedly inserted to or wound around an outer circumferential surface of the electrode pin 12, and an insulating tube 13 coupled to wrap the outer circumferential surface of the electrode pin 12 and the markers 20 therein.
The electrode main body 11 is configured to allow a user to hold it with his hand and connected to the RFA device (not shown) by using an electrode line 11a through which RF and cooling water are supplied.
Here, one end of the electrode line 11a is connected to the electrode main body 11, and a connector 11b, which is connected to an RF generator, is connected to the other end of the electrode line 11a.
The electrode pin 12, having a tip end (i.e., having such a form that its end is acute), is connected to be coupled to one end of the electrode main body 11 such that it can be provided with RF and cooling water.
The electrode pin 12 has a hollow therein to allow cooling water to circulate therein to reduce heat when RF heat is generated.
One or more markers 20, coated with a non-transmissive (or opaque) material on its surface, are formed to be inserted into or wound around the outer circumferential surface of the electrode pin 12.
As shown in FIGS. 4a and 4b, the markers 20 are configured by bending a thin plate coated or plated with a radiation non-transmissive material thereon in the shape of a band and inserting it into the outer circumferential surface of the electrode pin 12.
As shown in FIGS. 5a and 5b, in another example, the marker 20 may also be configured by winding a wire 21 coated or plated with a radiation non-transmissive material thereon on the outer circumferential surface of the electrode pin 12.
The marker 20 formed on the electrode pin 12 is fixed to the electrode pin 12 by using a polymer adhesive (P) in order to prevent the marker 20 from moving on the electrode pin 12.
An insulating tube 13 wraps the regions, excluding an end portion, of the outer circumferential surface of the electrode pin 12 and the markers 20 to insulate them.
Namely, the insulating tube 13 is configured to prevent human body tissues, other than the lesion portion, from being cauterized when RF is transmitted to the electrode pin 12.
When heat is applied to the insulating tube 13 covering the electrode pin 12 and the markers 20, the insulating tube 13 is contracted, allowing the marker 20 to be fixedly compressed.
As shown in FIGS. 2 and 6, the electrode needle 100 of the RFA device according to an exemplary embodiment of the present invention, which is to be inserted into a lesion portion to cauterize the lesion portion by using RF radiated from the RFA device, includes the electrode main body 11, the electrode pin 12, a guide tube 14 formed as a polymer tube or a metal pipe and inserted into the outer circumferential surface of the electrode pin 12 such that it moves up and down on the outer circumferential surface of the electrode pin 12, and the markers 20 inserted into or wound around the outer circumferential surface of the guide tube 14.
The electrode main body 11 is configured to allow a user to hold it with his hand and connected to the RFA device (not shown) by using an electrode line 11a through which RF and cooling water are supplied.
Here, one end of the electrode line 11a is connected to the electrode main body 11, and a connector 11b, which is connected to an RF generator, is connected to the other end of the electrode line 11a.
The electrode pin 12, having a tip end (i.e., having such a form that its end is acute), is connected to be coupled to one end of the electrode main body 11 such that it can be provided with RF and cooling water.
The electrode pin 12 has a hollow therein to allow cooling water to circulate therein to reduce heat when RF heat is generated.
The guide tube 14 wraps the regions, excluding an end portion, of the electrode pin 12 therein and is formed as a polymer tube or a metal pipe. When a switch 11c formed on the electrode main body 11 is operated, the guide tube 14 is drawn out of the electrode main body 11 or inserted into the electrode main body 11 to adjust the length of an energized portion of an electrode pin 12.
Namely, how the markers 20 are fixed varies depending on the material of the guide tube 14.
The markers 20 coated or plated with a radiation non-transmissive material on its surface is formed on the outer circumferential surface of the guide tube 14. One or more markers 20 may be inserted into or wound around the outer circumferential surface of the guide tube 14.
As shown in FIGS. 7a and 7b, the markers 20 are configured by bending a thin plate coated or plated with a radiation non-transmissive material thereon in the shape of a band and inserting it into the outer circumferential surface of the guide tube 14.
As shown in FIGS. 8a and 8b, in another example, the marker 20 may also be configured by winding a wire 21 coated or plated with a radiation non-transmissive material thereon on the outer circumferential surface of the guide tube 14.
As shown in FIGS. 7a to 8b, when the guide tube 14 is a polymer tube, the marker 20 may be fixedly bonded to the guide tube 20 with a polymer adhesive (P) which is harmless to the human body, and when the guide tube 14 is manufactured as the polymer tube, it can provide an insulating function, the same function as that of the insulating tube 13.
As shown in FIGS. 9a to 10b, when the guide tube 14 is a metal pipe, the outer side of the marker 20 bonded by the polymer adhesive (P) is wrapped with the insulating tube 13, and heat is applied thereto. Then, the insulating tube 13 is contracted to allow the marker to be fixedly compressed.
The electrode needle 100 is configured to facilitate recognition of the position of the electrode pin 12 or the guide tube 14 according to a non-transmissive operation when X-ray is irradiated to the marker 20 or according to a diffused-reflection operation of ultrasonic waves when the marker 20 is observed by using ultrasound imaging equipment, in a state in which the electrode needle 100 is inserted for a medical operation.
The operation and effect of the electrode needle of an RFA device configured as described above according to an exemplary embodiment of the present invention will now be described.
As shown in FIG. 11, in order to use the electrode needle, first, the connector 11b connected to the electrode line 11a is connected to an RF generator (not shown), a sort of RFA device.
Next, cooling water is circulatively supplied into the interior of the electrode pin 12, the position of a lesion portion 200 is checked, and the electrode pin 12 of the electrode needle 100 is inserted into the interior of the human body such that the electrode pin 12 protruded from the end of the insulating tube 13 is inserted into the lesion portion 200 such as a cancerous tissue.
And then, when the RF generator is operated to oscillate RF, the oscillated RF is transferred in the order, starting from the connector 11b the electrode line 11a the electrode main body 11 the electrode pin 12.
In this state, when RF is supplied to the electrode pin 12 of the electrode needle 100 by manipulating the RF generator, RF is energized through the end of the electrode pin 12 not wrapped up by the insulating tube 13 to cauterize the lesion portion 200 with RF heat.
At this time, because the outer surface of the electrode pin 12 positioned within the insulating tube 13 is insulated as it is wrapped up by the insulating tube 13, so that the RF cannot affect other normal human body tissues.
The marker 20 is positioned at the inner side of the human body as the insulating tube 13 is inserted in the process of the medical procedure of the electrode needle 100.
Also, while the electrode needle 100 is being operated, because the marker 20 is coated or plated with the radiation non-transmissive material, the insertion depth or position of the electrode pin 12 or the insulating tube 13 can be simply checked by irradiating X-rays thereupon.
As shown in FIG. 12, in another example, the guide tube 14 of the electrode needle 100 is formed as a polymer tube. The electrode pin 12 is inserted along with the guide tube 14, and in this case, the length of an energized portion of the electrode pin 12 can be adjusted by adjusting the length of an exposed portion of the guide tube 14 by operating the switch 11c according to the area or depth degree of the lesion portion 200, in order to adjust the range of cauterization and, because the position of the marker 20 formed on the guide tube 14 can be accurately recognized, whether or not the insertion is precisely performed for cauterization can be recognized.
While the present invention has been shown and described in connection with the exemplary embodiments, it will be apparent to those skilled in the art that modifications and variations can be made without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

  1. An electrode needle of a radio frequency ablation (RFA) device, which is inserted into a lesion portion to cauterize the lesion portion by using RF radiated from the RFA device,
    wherein an electrode pin having a tip end is coupled to one end of an electrode main body that can be held or grasped by a user's hand,
    one or more markers coated or plated with a radiation non-transmissive material thereon are inserted into or wound around an outer circumferential surface of the electrode pin,
    regions, excluding an end portion, of the electrode pin are wrapped, along with the markers, with an insulating tube, and heat is then applied thereto to allow the insulating tube to be contracted to fixedly compress the markers, whereby the position of the electrode pin can be easily recognized according to a non-transmissive operation when X-rays are irradiated to the marker or according to a diffused-reflection operation of ultrasonic waves when the marker is observed by using ultrasound imaging equipment in a state in which the electrode needle is inserted for a medical operation.
  2. The electrode needle of claim 1, wherein the markers are configured by bending a thin plate with a radiation non-transmissive material coated or plated thereon in a band-like shape and inserting the same to the outer circumferential surface of the electrode pin.
  3. The electrode needle of claim 1, wherein the markers are configured by winding a wire with a radiation non-transmissive material coated or plated thereon on the outer circumferential surface of the electrode pin.
  4. The electrode needle of any one of claim 1 to claim 3, wherein the markers are fixedly bonded with a polymer adhesive harmless to a human body.
  5. An electrode needle of a radio frequency ablation (RFA) device, which is inserted into a guide tube allowing for adjusting the length of an energized portion in a medical operation in order to cauterize a lesion portion by using RF radiated from the RFA device,
    wherein an electrode pin having a tip end is coupled to one end of an electrode main body that can be held or grasped by a user's hand,
    a guide tube covering regions, excluding an end portion, of the electrode pin to insulate the regions, and formed as a polymer tube or a metal pipe, and
    one or more markers with a radiation non-transmissive material coated or plated thereon are inserted into or wound around an outer circumferential surface of the guide tube, whereby the position of the guide tube can be easily recognized according to a non-transmissive operation when X-ray is irradiated to the marker or according to a diffused-reflection operation of ultrasonic waves when the marker is observed by using ultrasound imaging equipment in a state in which the electrode needle is inserted for a medical operation.
  6. The electrode needle of claim 5, wherein the markers are configured by bending a thin plate with a radiation non-transmissive material coated or plated thereon in a band-like shape and inserting the same to the outer circumferential surface of the guide tube.
  7. The electrode needle of claim 5, wherein the markers are configured by winding a wire with a radiation non-transmissive material coated or plated thereon on the outer circumferential surface of the guide tube.
  8. The electrode needle of any one of claim 5 to claim 7, wherein when the guide tube is a polymer tube, the markers are fixedly bonded with a polymer adhesive harmless to a human body.
  9. The electrode needle of any one of claim 5 to claim 7, wherein when the guide tube is a metal pipe, the markers bonded with the polymer adhesive are wrapped up by an insulating tube and heat is then applied to the insulating tube to allow the marker to be fixedly compressed as the insulating tube is contracted.
PCT/KR2010/003430 2009-05-28 2010-05-28 Electrode needle of radio frequency ablation device WO2010137920A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020090047103A KR20100128608A (en) 2009-05-28 2009-05-28 Electrode saliva of a high frequency generation of heat treatment device
KR10-2009-0047103 2009-05-28

Publications (2)

Publication Number Publication Date
WO2010137920A2 true WO2010137920A2 (en) 2010-12-02
WO2010137920A3 WO2010137920A3 (en) 2011-04-14

Family

ID=43223280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2010/003430 WO2010137920A2 (en) 2009-05-28 2010-05-28 Electrode needle of radio frequency ablation device

Country Status (2)

Country Link
KR (1) KR20100128608A (en)
WO (1) WO2010137920A2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397099A (en) * 2011-08-30 2012-04-04 北京工业大学 Aneurysm interventional thermotherapy device
TWI626035B (en) * 2016-01-28 2018-06-11 財團法人工業技術研究院 Radiofrequency ablation electrode needle
CN110974690A (en) * 2019-11-22 2020-04-10 中国科学院电子学研究所 Bidirectional electric needle, accurate acupuncture point stimulation device and system suitable for animals
US11432870B2 (en) 2016-10-04 2022-09-06 Avent, Inc. Cooled RF probes
CN116570363A (en) * 2023-07-14 2023-08-11 北京先瑞达医疗科技有限公司 Radio frequency catheter

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101304423B1 (en) * 2011-11-07 2013-09-05 광주과학기술원 Electrode needle, Manufacturing method thereof, and Deep-heating apparatus having the same
KR101449965B1 (en) * 2012-02-10 2014-10-15 (주)알에프메디컬 Electrode tip for radiofrequency tissue ablation and electrode having the same
CN104546120A (en) * 2015-01-14 2015-04-29 浙江伽奈维医疗科技有限公司 Bleeding stop needle core and biopsy needle
GB2557813B (en) * 2015-10-20 2020-10-28 Gyrus Acmi Inc Ablation device
KR102081033B1 (en) * 2019-11-14 2020-02-24 최은숙 Herbal needle for improved invasion length precision, hybrid device for needle, and herbal needle control system for improved invasion length precision

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200287997Y1 (en) * 2002-05-29 2002-09-09 이태권 Electronic operation needle for cosmetic surgery
US20040106891A1 (en) * 2002-08-30 2004-06-03 Inrad, Inc. Localizing needle with fluid delivery
KR20060025293A (en) * 2004-09-15 2006-03-21 임현철 Electrode device for radiofrequency thermal ablation
KR20080111824A (en) * 2007-06-20 2008-12-24 김근식 Acuneedle with patterns

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200287997Y1 (en) * 2002-05-29 2002-09-09 이태권 Electronic operation needle for cosmetic surgery
US20040106891A1 (en) * 2002-08-30 2004-06-03 Inrad, Inc. Localizing needle with fluid delivery
KR20060025293A (en) * 2004-09-15 2006-03-21 임현철 Electrode device for radiofrequency thermal ablation
KR20080111824A (en) * 2007-06-20 2008-12-24 김근식 Acuneedle with patterns

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397099A (en) * 2011-08-30 2012-04-04 北京工业大学 Aneurysm interventional thermotherapy device
TWI626035B (en) * 2016-01-28 2018-06-11 財團法人工業技術研究院 Radiofrequency ablation electrode needle
US10888372B2 (en) 2016-01-28 2021-01-12 Industrial Technology Research Institute Radiofrequency ablation electrode needle
US11432870B2 (en) 2016-10-04 2022-09-06 Avent, Inc. Cooled RF probes
CN110974690A (en) * 2019-11-22 2020-04-10 中国科学院电子学研究所 Bidirectional electric needle, accurate acupuncture point stimulation device and system suitable for animals
CN110974690B (en) * 2019-11-22 2021-05-11 中国科学院电子学研究所 Bidirectional electric needle, accurate acupuncture point stimulation device and system suitable for animals
CN116570363A (en) * 2023-07-14 2023-08-11 北京先瑞达医疗科技有限公司 Radio frequency catheter
CN116570363B (en) * 2023-07-14 2024-04-02 北京先瑞达医疗科技有限公司 Radio frequency catheter

Also Published As

Publication number Publication date
WO2010137920A3 (en) 2011-04-14
KR20100128608A (en) 2010-12-08

Similar Documents

Publication Publication Date Title
WO2010137920A2 (en) Electrode needle of radio frequency ablation device
JP6803902B2 (en) Electrosurgical equipment that supplies RF and / or microwave energy into living tissue
WO2011093622A2 (en) Electrode needle and hemostatic device including the same
JP7280626B2 (en) electrosurgical cautery instrument
WO2013172599A1 (en) Combined cauterization and stent operation device
JP7282381B2 (en) ablation probe
JP7469824B2 (en) Electrosurgical device for delivering RF and/or microwave energy into biological tissue - Patents.com
US8628521B2 (en) Device for cauterising tissue and uses thereof
KR20200073205A (en) Electrosurgical device
WO2015080411A1 (en) Electrode apparatus for radiofrequency ablation
EP1768591B1 (en) Flexible endoscope for endo luminal access radio frequency tumor ablation
JP2022531099A (en) Electrosurgical system
EP3199118B1 (en) Catheter and manufacturing method therefor
KR20200016832A (en) Electrosurgical instruments to perform ablation or electroporation of biological tissue
JP6559889B2 (en) Retractable tissue cutting device
WO2015023075A1 (en) High frequency cauterization apparatus having catheter
JP2528223B2 (en) High Frequency Incision Tool for Endoscope
JP2023523858A (en) Electrode assembly for endoscopic surgery
WO2020022556A1 (en) Apparatus for minimally invasive surgery
JPWO2020221749A5 (en)
CN114222607B (en) Light therapeutic equipment
WO2022025616A1 (en) Bipolar catheter for vascular treatment
JP2001505454A (en) Ultrasound-labeled catheters for electrotherapy and systems using the catheters
CN2167727Y (en) Melting-injection catheter
JP2001061855A (en) Cauterization apparatus for endoscope

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10780831

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10780831

Country of ref document: EP

Kind code of ref document: A2