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EP1569571A2 - Appareil permettant de traiter les d fauts des vaisseaux - Google Patents

Appareil permettant de traiter les d fauts des vaisseaux

Info

Publication number
EP1569571A2
EP1569571A2 EP03788816A EP03788816A EP1569571A2 EP 1569571 A2 EP1569571 A2 EP 1569571A2 EP 03788816 A EP03788816 A EP 03788816A EP 03788816 A EP03788816 A EP 03788816A EP 1569571 A2 EP1569571 A2 EP 1569571A2
Authority
EP
European Patent Office
Prior art keywords
catheter
probe
working
endoscopy
vessel
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Withdrawn
Application number
EP03788816A
Other languages
German (de)
English (en)
Inventor
Martina Grosspointner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1569571A2 publication Critical patent/EP1569571A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0051—Flexible endoscopes with controlled bending of insertion part
    • 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
    • A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart 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
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00345—Vascular system
    • A61B2018/00404—Blood vessels other than those in or around the heart
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00636—Sensing and controlling the application of energy
    • A61B2018/00773—Sensed parameters
    • A61B2018/00791—Temperature
    • A61B2018/00797—Temperature measured by multiple temperature sensors
    • 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
    • A61B2018/1472—Probes or electrodes therefor for use with liquid electrolyte, e.g. virtual electrodes
    • 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
    • A61B90/30—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure
    • A61B2090/306—Devices for illuminating a surgical field, the devices having an interrelation with other surgical devices or with a surgical procedure using optical fibres

Definitions

  • the invention relates to a device for the treatment of vascular defects, in particular narices, using high-frequency energy, with the further features of the preamble of the respective patent claim 1 or 24.
  • the device known from DE 197 37 965 C1 for the treatment of vascular defects, in particular narices has a high-frequency generator and a probe to be inserted into the vessel, which is connected to the high-frequency generator and with which the treatment can be carried out on the vessel.
  • the probe comprises an elongated, flexible probe body and a probe head located at its front end for the application of high-frequency energy to the vessel.
  • the positioning of the probe tip is difficult to carry out, since the attending physician must determine the position of the tip by means of light to be applied from the outside, which is relatively difficult and complex.
  • the present invention is therefore based on the object of facilitating the positioning of the probe or the high-frequency range.
  • a catheter to be placed in advance is provided for introducing the working probe into the vessel. Because the catheter is already positioned at the desired location in the vessel, the insertion of the working probe into the location to be treated can be carried out particularly easily.
  • the working probe is expediently inserted into the catheter which has already been placed and is therefore automatically correctly positioned.
  • the catheter can be used with particular advantage by means of an endoscopy probe, which can be removed again after insertion.
  • the catheter is thus brought to the desired location in a simple manner. By removing the endoscopy probe, space is created for the working probe to be subsequently used.
  • an optic and / or a light source in the front area of the endoscopy probe in order to facilitate the positioning of the endoscopy probe or the catheter.
  • the optics or the light source it can be determined exactly where the end of the endoscopy probe and thus the catheter is located.
  • An additional lighting device from the outside or the like is no longer necessary.
  • the endoscopy probe can advantageously run at least in regions within the catheter 5, so that it is optimally positioned. If the endoscopy probe is removed after the catheter has been inserted, the working probe can be inserted into the catheter. This ensures the exact positioning of the working probe.
  • the endoscopy probe can protrude from the front of the catheter. This means that the light source or optics is also relatively free and is not covered by the catheter wall.
  • the front end of the endoscopy probe which has a smaller diameter than the catheter, can be used to clear the way through the vessel.
  • the endoscopy probe can rest on the inner wall of the catheter, so that: 5 that the catheter can be positioned exactly.
  • the endoscopy probe can be controllable from the outside and can be positioned together with the catheter at a specific location in the vessel.
  • the endoscopy probe and / or the catheter essentially consist of a flexible plastic material.
  • the flexibility of the endoscopy probe and / or the catheter and / or the working probe is expediently set in such a way that it is inserted into the vessel
  • the working probe can be insertable into the catheter instead of the endoscopy probe.
  • the working probe like the endoscopic probe, should be the inner one
  • the working probe can protrude from the front of the catheter.
  • High-frequency energy can thus be released into the vessel from the probe head in almost all directions.
  • an infusion solution e.g. B. a physiological saline
  • the working probe can have spacer elements which bear against the inner wall of the catheter.
  • the spacer elements can be formed in the form of spacer wings on the working probe (for example only in the front area of the catheter), the spacer wings advantageously being arranged uniformly around the working probe.
  • At least one temperature sensor can be provided in the front area of the catheter.
  • the temperature sensor can be used to measure and regulate the temperature during the treatment. Too high a temperature in the work area would result in too much tissue being exposed to the radio frequency energy even outside the vessel to be treated. A temperature that is too low, on the other hand, would have no effect and would therefore not result in the vessel being closed.
  • the treatment temperature is in a range of about 50 ° C - 90 ° C.
  • the electrical lines of the temperature sensors can advantageously run along or within the wall of the catheter up to its rear end and from there to the outside.
  • the catheter can have a constriction in the front region or can be tapered, the spacer elements or the working probe and / or the endoscopy probe being in contact with the constriction.
  • This has the advantage that the working probe and the endoscopy probe are automatically positioned exactly and the insertability is limited. This is particularly advantageous when inserting the working probe, since the catheter is already in the vessel and the working probe can be inserted into the catheter until it or its spacer elements encounter the constriction.
  • An infusion connection can also be provided on the catheter, to which an infusion tube can be connected in order to introduce an infusion solution into the catheter.
  • the working probe is spaced from the inner wall of the catheter so that the infusion solution can emerge again at the tip of the catheter.
  • a flexible opening for adaptation to probes of different diameters can be provided on the back of the catheter. This flexible opening stabilizes the rear end of the endoscopy or working probe and securely closes off the entire device from the outside.
  • the adaptation of the flexible opening to the working probe also serves to ensure that the Infection solution does not exit to the rear, but only to the front.
  • the flexible opening can also be fully closable by itself, i.e. H. it also closes when there is no probe, i.e. neither an endoscopy probe nor a working probe, in the catheter. This is particularly advantageous when changing the probes, so that no blood or infusion solution can escape and no air can enter the catheter.
  • the length of the catheter can expediently be in a range from approximately 20 cm to 150 cm, depending on the length of the varices to be treated or on the distance of the varices from the puncture area.
  • the catheter and / or the working probe can be provided as disposable parts, while the endoscopy probe, which has an optic or a light source and is therefore comparatively complex, can be reusable.
  • the device for the treatment of vascular defects, in particular varices, broom tears and the like, using high-frequency energy is equipped with a high-frequency generator and a high-frequency range which is connected to the high-frequency generator and with which the treatment is started the vessel can be carried out, the high-frequency generator comprising a transmitter and a receiver and at least the receiver being provided on a catheter to be placed in the vessel.
  • the entire high-frequency range that is to say the transmitter and receiver, is provided on the catheter, in particular integrated on the catheter outer wall or in the catheter.
  • This has the advantage that either a very narrow working probe can be inserted into the catheter, at the tip of which there is only the transmitter.
  • Another advantage is that if the entire high-frequency range is arranged on the catheter, no additional working probe is required at all.
  • the device can be used for many applications, such as B. vein occlusion, vein shrinking, treatment of broom tear, surgical cutting, coagulation, collagen shrinking of the skin.
  • the high-frequency generator can be designed to be tunable or switchable to different HF frequencies between 0.5 and 5.0 MHz in order to be able to set the optimum frequency for the respective vessel size (diameter) or the respective treatment.
  • An endoscopy probe can be provided in the catheter, which can either be replaced by a working probe or remains in the catheter during the entire treatment.
  • the endoscopy probe can be equipped with an optical system (or camera) and / or a light source, which are preferably located in the front area of the endoscopy probe.
  • the endoscopy probe guided in the catheter enables the catheter or the treatment head integrated thereon to be moved to the desired location. There is thus the possibility of occluding so-called side branches or inadequate connecting nerves to the deep venous system. If these connecting nerves are not blocked, there is a high risk of recurrence of the venous disease.
  • the front area or the head area of the endoscopy probe and the catheter can preferably be so flexible that a 360 ° rotation and bending possibility is realized.
  • the catheter can follow all movements of the endoscopy probe, so to speak.
  • the catheter can be firmly connected to the endoscopy probe at the end away from the body using an adapter.
  • the front end of the catheter can be at least partially closed and covers at least the front end of the endoscopy probe.
  • the front of the catheter is completely closed.
  • the endoscopy probe therefore does not come into contact with the blood and can be reused as often as required. Since the endoscopy probe is very expensive, this is a major advantage.
  • the front closed end of the catheter is made transparent so that the light from the endoscopy probe can exit to the outside or the view is clear for the optics.
  • the endoscopy probe can rest against the inner wall of the catheter, at least in some areas, so that its position is stabilized.
  • the catheter and endoscopy probe can be connected as one unit. They can form a permanent unit and are disposed of together after use.
  • the endoscopy probe can be exchangeable.
  • the endoscopic probe can either remain in the catheter during the entire treatment or can be completely replaced by the working probe.
  • At least one temperature sensor can be provided on the catheter, with which one temperature-related control is possible.
  • the device can advantageously emit a warning tone if the temperature is too hot or too cold or if it is operated incorrectly.
  • the temperature sensor can be arranged between the transmitter and receiver in order to be able to measure and control the temperature directly in the active area of the treatment.
  • At least one further temperature sensor can be provided behind the high-frequency range or behind the receiver.
  • An electronic control as a safety module means that heating cannot take place beyond the work area despite incorrect operation by the user. For example, a stay of the probe at one point is counteracted, as well as an actuation of the working mechanism in the interval, with the result that the radius of the heating zone increases more and more and, as a result, adjacent tissue structures could be destroyed. If, in fact, the aforementioned thermal sensor leaves the vein when it is withdrawn in front of the catheter tip, the temperature decreases and this decrease in temperature serves as a signal that the catheter tip has already been withdrawn very far from the vein. Damage to the skin is prevented by interrupting the application at this moment.
  • At least one longitudinal chamber for the supply of liquid, for. B. rinsing liquid and / or for guiding electrical lines (wires) z. B. for transmitter, receiver and temperature sensors.
  • these chambers like the catheter itself, are designed to be flexible, so that the chambers can also participate in the flexible movements.
  • a working probe can be inserted into the catheter, the tip of which protrudes forward.
  • the transmitter can be arranged at the front tip of the working probe.
  • the associated receiver can be arranged on the catheter.
  • a defined heating of the vein wall is possible. The heating can be controlled by a temperature sensor arranged between the transmitter and the receiver.
  • the catheter-probe combination can then be slowly withdrawn until the vein to be treated has been fully heated. By destroying the inner wall of the vein, the vessel becomes inoperative and subsequently sticks together.
  • shrinking of the vein wall can also be carried out, with the result that the diameter of the vein is normalized (ie reduced) and the function of the venous valves and thus the vein is restored.
  • a physiological electrolyte fluid can be introduced into the vein through the catheter so that the heating of this fluid takes place at the tip of the probe.
  • the fluid can leak out of an opening at the front of the catheter. In accordance with the laws of physics, this is largely uniformly circular, without the working probe or the catheter having to have direct vein wall contact.
  • Another advantage of this method is that the blood comes into contact with the electrodes only slightly.
  • Burn-in of the blood on the electrodes (corresponds to the effect of insulation) is therefore significantly delayed or does not occur.
  • the effectiveness of this procedure is further increased if a so-called tumescent solution is infiltrated in the area of the vein to be treated after the catheter-probe combination has been placed.
  • the vessel is largely bloodless and an optimal effect of the procedure is possible.
  • the receiver arranged on the catheter can be designed in various variations.
  • the receiver can be arranged in a ring around the catheter or integrated therein. It is also possible to carry out a metal coating of the catheter over a certain area.
  • the catheter can also be completely metal-coated. The coating represents another possible variant of the receiver.
  • the outer diameter of the catheter can be between 0.8 mm and 4.0 mm, depending on the design variant.
  • the catheter can be a marker, e.g. B. have a colored marking.
  • a marking can be provided on the last ten centimeters of the catheter, so that when the catheter is pulled out it can be immediately recognized how much of the catheter is still in the vein. This prevents the skin from being damaged if the catheter or the active high-frequency range has already been pulled very far out of the vein.
  • Figure 1 is a sectional view of the catheter with endoscopic probe.
  • FIG. 2 shows a sectional illustration of the endoscopy probe according to FIG. 1;
  • 3 shows a sectional illustration of the catheter according to FIG. 1;
  • FIG. 5 shows a sectional illustration of the working probe according to FIG. 4;
  • FIG. 6 shows a cross-sectional illustration of the working probe along the line VI-VI from FIG. 5;
  • FIG. 8 shows a longitudinal section of the catheter according to FIG. 7 with an endoscopy probe
  • FIG. 9 shows a longitudinal section of the catheter according to FIG. 7 with working probe
  • FIG. 10 shows a longitudinal section through a further variant of a catheter
  • FIG. 11 shows a cross-sectional illustration along line 1 according to FIG. 10 with variants A and B;
  • FIG. 12 shows a cross-sectional illustration along line 2 according to FIG. 10 with variants A and B;
  • FIG. 13 shows a cross-sectional illustration along line 3 according to FIG. 10 with variants A and B;
  • FIG. 14 shows a cross-sectional illustration along line 4 according to FIG. 10 with variants A and B as well
  • 15 shows a cross-sectional illustration of an alternative embodiment variant of a catheter with an endoscopy probe.
  • the device shown in the drawing figures is used to treat vascular defects, in particular varices, using high-frequency energy.
  • the device comprises a high-frequency generator 1 and a working probe 2, which is connected to the high-frequency generator 1 and with which the treatment on the vessel can be carried out (see FIG. 4).
  • a catheter 3 to be placed in advance is provided for inserting the working probe 2 into the vessel. The positioning of the working probe 2 or its tip, which emits the high-frequency energy, can thus be carried out simply and precisely. Further, functional elements that contribute to an improved and controlled treatment of the vessels can also be provided on the catheter 3.
  • the catheter 3 can be inserted by means of an endoscopy probe 4, which is inserted again after the insertion is removable.
  • An endoscopy probe 4 inserted into the catheter 3 is shown in FIG. 1, the endoscopy probe 4 alone is shown in FIG.
  • the endoscopy probe 4 has a light source 5 in the front area, which can be a laser light, a light diode or a cold light.
  • the light source can be used to check exactly where the end of the endoscopy probe 4 and thus the catheter 3 are located. Exact positioning of the catheter 3 without further checking by means of light or ultrasound systems to be applied from the outside is possible.
  • optics can also be provided, which transmit the recorded image to a monitor.
  • the endoscopy probe 4 extends at least over a large part within the catheter 3 and protrudes from the catheter 3 at the front. In this way, the endoscopy probe 4 can position the catheter 3 exactly.
  • the light source 5 is arranged in the tip of the endoscopy probe 4, so that there is a small distance between the light source 4 and the front end of the catheter 3.
  • the endoscopy probe 4 lies against the inner wall 6 of the catheter 3, so that an optimal guidance of the catheter 3 by means of the endoscopy probe 4 is possible.
  • the endoscopy probe 4 can also be controlled from the outside and can thus be inserted following the course of the vessel.
  • the endoscopy probe 4 and the catheter 3 are designed to be flexible, the two components essentially consisting of a flexible plastic material.
  • the working probe 2 can be inserted into the catheter 3 instead of the endoscopic probe 4.
  • the catheter 3 is already positioned exactly by means of the endoscopic probe 4, so that the working probe 2 only has to be inserted into the catheter 3.
  • the working probe 2 protrudes from the front of the catheter 3, so that a free application of high-frequency energy to the vessel, ie without obstructing the catheter 3, can be carried out.
  • the working probe 2 is not in direct contact with the catheter 3, but is spaced apart from the inner wall 6 of the catheter 3 by a small space.
  • the working probe 2 has spacer elements 8 which bear against the inner wall 6 of the catheter 3.
  • An infection solution (for example a physiological saline solution) can thus be introduced via an infusion connection 9, which emerges at the tip of the catheter 3 and prevents the formation of adhesions with blood in this area.
  • the spacer elements 8 or spacer wings are arranged in a circle around the working probe 2 (see FIG. 6) and accordingly ensure that the working probe 2 runs centrally or in the central axis of the catheter 3.
  • Temperature sensors 7 are provided in the front area of the catheter 3.
  • the temperature sensors 7 are connected via an electrical connection or electrical lines 12 to an evaluation unit or control and regulation unit.
  • the electrical lines 12 run in the wall or on the wall of the catheter 3.
  • a temperature measurement or control is necessary because if the temperature at the probe head is too high, the tissue outside the blood vessel, ie the varicose vein, can be destroyed. If the temperature is too low, the varices will not be closed as desired.
  • the treatment temperature interval is in a range from approx. 50 to 90 ° C, in particular in a range from 60 to 80 ° C.
  • the catheter 3 has a narrowing 11 in the front area, against which the spacer elements 8 of the working probe 2 (see FIG. 4) and the endoscopic probe 4 (see FIG. 1) rest. This prevents the working probe 2 or the endoscopy probe 4 from being inserted too far.
  • the working probe 2 is coated except for the tip area, so that the high-frequency energy is released only in the non-coated part to the surrounding tissue.
  • a flexible opening 10 is provided on the back of the catheter 3 for adaptation to probes of different diameters.
  • the back of the catheter 3 is thus sealed both when using the endoscope probe 4, which is wider in diameter, and the narrower working probe 2, so that no contamination or the like can occur.
  • the flexible opening 10 can also be closed completely by itself, that is, when no probe is inserted. This is particularly advantageous when changing the probes.
  • the length of the catheter 3 is in a range from approximately 20 cm to 150 cm, depending on the length of the varices to be treated or on the distance of the varices from the puncture area of the catheter 3.
  • the catheter 3 and the working probe 2 are provided as disposable parts, while the endoscopy probe 4 with its light source 5 can be reused.
  • FIGS. 7 to 9 A further variant of a device for treating vascular defects, in particular varices, broom tearers and the like, is shown in FIGS. 7 to 9.
  • the receiver 15 of the high-frequency range is arranged on the catheter 3 in the form of a ring running around the catheter 3.
  • FIG. 8 shows the catheter according to FIG. 7 with an endoscopy probe 4 with which the catheter 3 is placed.
  • the endoscopy probe 4 is connected to a light source 5 (e.g. Cold light, laser light), which encases the entire endoscopy probe 4, so to speak.
  • the entire course of the inserted catheter 3 can thus be followed from the outside.
  • endoscopy probe 4 can also be equipped with optics so that the interior of the treated vessel can be seen on a monitor. Endoscopy probe 4 and catheter 3 are extremely flexible.
  • the transmitter 14 required for the high-frequency range is arranged on the front tip 19 of the working probe 2.
  • the catheter 3 according to FIG. 10 is closed at its front end 17, so that an endoscopy probe 4 (not shown) inserted therein cannot come into contact with the blood or an introduced liquid.
  • the endoscopy probe 4 is thus reusable.
  • the front end of the catheter 3 is transparent, so that a clear view into the vessel to be treated is ensured for the optics arranged on the endoscopy probe 4.
  • the endoscopy probe 4 can rest against the inner wall 6 of the catheter 3 at least in regions.
  • the catheter 3 and the endoscopy probe 4 can be connected to one another as an inseparable unit. As already mentioned above, the endoscopy probe 4 can also be exchangeable. In any case, the endoscopy probe 4 is arranged in the catheter 3 during the treatment, so that the vessel can always be illuminated by means of a light source 5 arranged on the endoscopy probe 4 or the vessel to be treated can be monitored by means of optics.
  • a temperature sensor 7 is arranged between the transmitter 14 and the receiver 15, which enables constant temperature monitoring in the treatment area.
  • the thermocouple connected to the temperature sensor 7 is provided with reference number 21.
  • a further temperature sensor 7 is provided behind the receiver 15, which leaves the vein when the catheter 3 is withdrawn in front of the catheter tip and thus prevents damage to the skin by measuring a drop in temperature and thus interrupting the application at this moment.
  • the temperature sensors 7 are arranged in a ring around the catheter 3. Instead of the temperature sensor 7 or also additionally, sensors can be provided which measure the impedance, that is to say the resistance to the body.
  • At least one longitudinal chamber 18 for the supply of irrigation fluid can be provided on the inner wall 6 of the catheter 3.
  • a plurality of such chambers 18 for the rinsing liquid are arranged around the wall.
  • chambers (also called lumens) 18 are provided for guiding electrical lines 12 for the transmitter 14, the receiver 15 and the temperature sensors 7.
  • Transmitter 14 and receiver 15, like the temperature sensors 7, are arranged in ring form around the catheter 3 or integrated therein.
  • the receiver 15 can also be arranged on the catheter 3 in the form of a large-area coating. This coating can of course also be provided in the embodiment variants according to FIGS. 7 to 9.
  • the outer diameter of the catheter 3 can vary between approximately 0.8 mm and 4.0 mm, depending on the design variant.
  • the catheter 3 in FIG. 7 has a marking 16 with which the treating physician can estimate how far the catheter 3 has already been led out of the vein to be treated and can thus avoid burning the skin.
  • FIG. 15 shows a further possible embodiment variant of a cross section at a specific point on a catheter 3, the metal ring running around the outside representing the impedance measuring contact 20.
  • the different lumens in which the connecting wires and the optical fiber or the endoscopy probe 4 are arranged can also be clearly seen in this illustration.

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Abstract

Appareil permettant de traiter les défauts des vaisseaux, en particulier les varices, à l'aide de l'énergie à haute fréquence. Ledit appareil comporte un générateur de haute fréquence ainsi qu'une sonde de travail ou plus précisément une zone de haute fréquence connectée au générateur de haute fréquence, à l'aide de laquelle le traitement sur un vaisseau peut être effectué. Un cathéter à poser préalablement permet l'introduction de la sonde de travail dans le vaisseau, ou alors le récepteur au moins est fixé sur le cathéter à introduire dans le vaisseau.
EP03788816A 2002-11-22 2003-11-24 Appareil permettant de traiter les d fauts des vaisseaux Withdrawn EP1569571A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10254668 2002-11-22
DE10254668A DE10254668A1 (de) 2002-11-22 2002-11-22 Gerät zur Behandlung von Gefäßdefekten
PCT/DE2003/003881 WO2004047647A2 (fr) 2002-11-22 2003-11-24 Appareil permettant de traiter les défauts des vaisseaux

Publications (1)

Publication Number Publication Date
EP1569571A2 true EP1569571A2 (fr) 2005-09-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03788816A Withdrawn EP1569571A2 (fr) 2002-11-22 2003-11-24 Appareil permettant de traiter les d fauts des vaisseaux

Country Status (4)

Country Link
EP (1) EP1569571A2 (fr)
AU (1) AU2003292981A1 (fr)
DE (1) DE10254668A1 (fr)
WO (1) WO2004047647A2 (fr)

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US8747400B2 (en) 2008-08-13 2014-06-10 Arthrocare Corporation Systems and methods for screen electrode securement
US8355799B2 (en) 2008-12-12 2013-01-15 Arthrocare Corporation Systems and methods for limiting joint temperature
US8323279B2 (en) 2009-09-25 2012-12-04 Arthocare Corporation System, method and apparatus for electrosurgical instrument with movable fluid delivery sheath
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DE10254668A1 (de) 2004-06-09
AU2003292981A1 (en) 2004-06-18
WO2004047647A2 (fr) 2004-06-10
WO2004047647A3 (fr) 2004-12-09
AU2003292981A8 (en) 2004-06-18

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