[go: up one dir, main page]

WO1991000118A1 - Catheter a ballonet pour canalisation de vaisseaux sanguins occlus - Google Patents

Catheter a ballonet pour canalisation de vaisseaux sanguins occlus Download PDF

Info

Publication number
WO1991000118A1
WO1991000118A1 PCT/SE1990/000297 SE9000297W WO9100118A1 WO 1991000118 A1 WO1991000118 A1 WO 1991000118A1 SE 9000297 W SE9000297 W SE 9000297W WO 9100118 A1 WO9100118 A1 WO 9100118A1
Authority
WO
WIPO (PCT)
Prior art keywords
balloon
catheter
unit
distal
balloon unit
Prior art date
Application number
PCT/SE1990/000297
Other languages
English (en)
Inventor
Lars-Erik LÖRELIUS
Original Assignee
Medical Innovation I Uppsala Ab
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 Medical Innovation I Uppsala Ab filed Critical Medical Innovation I Uppsala Ab
Publication of WO1991000118A1 publication Critical patent/WO1991000118A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/104—Balloon catheters used for angioplasty
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1034—Joining of shaft and balloon
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1038—Wrapping or folding devices for use with balloon catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
    • A61B2017/22051—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation
    • A61B2017/22062—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation to be filled with liquid
    • 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
    • A61B2018/00101—Thermal conductivity low, i.e. thermally insulating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B2018/044—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating the surgical action being effected by a circulating hot fluid
    • A61B2018/046—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating the surgical action being effected by a circulating hot fluid in liquid form
    • 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
    • A61B2090/3933—Liquid markers
    • 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
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F2007/0054—Heating or cooling appliances for medical or therapeutic treatment of the human body with a closed fluid circuit, e.g. hot water
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M25/1027—Making of balloon catheters
    • A61M25/1029—Production methods of the balloon members, e.g. blow-moulding, extruding, deposition or by wrapping a plurality of layers of balloon material around a mandril
    • A61M2025/1031—Surface processing of balloon members, e.g. coating or deposition; Mounting additional parts onto the balloon member's surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/10—Balloon catheters
    • A61M2025/1043—Balloon catheters with special features or adapted for special applications
    • A61M2025/1086—Balloon catheters with special features or adapted for special applications having a special balloon surface topography, e.g. pores, protuberances, spikes or grooves

Definitions

  • the present invention relates to a balloon catheter for ca ⁇ nalization of occluded blood vessels.
  • Occluded blood vessels are opened, i.e. canalized, by using several different methods.
  • One of these methods is balloon dilatation combined with laser irradiation. Compare, for example, EP-A-182 689 (corresponding to US-A-4 799 479 ) in the name of Spears.
  • the process comprises introduc ⁇ tion of a so called guide wire into the vessel system to be subsequently guided to and through the occluded vessel portion. Thereafter a balloon catheter is threaded over the guide wire and is fed over by the guide wire to the occluded portion. Thereafter, the balloon unit is pressurized by liquid causing the vessel to expand and a canalization effect to take place.
  • the vessel is coagulated by irradiation with laser light from an argon laser.
  • the laser light is conducted into the balloon unit by means of a light conductor and is spread radially towards the walls of the vessel.
  • This known technique is subject to several disadvantages.
  • the laser unit is expensive and limits the field of use of the method.
  • the laser irradia ⁇ tion involves high energy and, for this reason, the known process is hampered by a number of security rules such as the requirement that all persons within the operation room includ ⁇ ing the patient have to wear protective glasses.
  • the operation room must be well ventilated and no persons are pe itted to enter the operation room while the operation is being per ⁇ formed.
  • Another purpose of the invention is to provide a balloon cathether which thermally acts on the wall of the blood vessel but does not cause the blood in the blood vessel to coagulate.
  • the heat insulating means of the balloon unit are a reflecting layer provided on the end surfaces of the balloon unit, in particular the insides of the end surfaces.
  • an air- filled chamber serving as heat insulation is provided at both the proximal and the distal ends of the balloon unit.
  • An additional advantage of the invention is obtained by adding an X-ray contrast material to the hot liquid. This enables the surgeon to exactly detect the postion of the balloon catheter in the vessel.
  • Figure 1 is a longitudinal section of a balloon catheter according to a first embodiment of the invention
  • Figure 2 is a transverse sectional view along the line II-II in Figure 1,
  • Figure 3 is a longitudinal section a second embodiment of the balloon catheter according to the present invention.
  • Figure 4 is a cross-sectional view along the line IV-IV in Figure 3,
  • Figure 5 is a longitudinal section of a third embodiment of the balloon catheter in accordance with the present invention.
  • Figure 6 shows a cross-section of the balloon catheter according to Figure 4 in a non-pressurized condition
  • Figure 7 shows a cross-section of the balloon catheter according to Figure 1 in pressurized condition.
  • Figure 1 shows a balloon catheter comprising a catheter tube 1 and a longitudinally extending balloon unit 2 provided at the distal end of the catheter. Axially of the catheter tube extends a lumen 3 which via an opening 4 in the wall surface of the catheter tube communicates with the inner space 3 of the balloon unit.
  • Figures 1 and 7 show the balloon unit in extended, i.e. pressurized, position subsequently designated as working position, while Figure 6 shows the balloon unit in a non-pressurized evacuated position i.e. the condition adopted by the balloon unit during its insertion into the blood vessel 6, the occluded portion 7 of which is to be opened.
  • a guide wire 8 has been guided to the occluded portion 7 and thereafter the balloon catheter has been slipped on to the guide wire and manually fed forward to the occluded portion through the blood vessel system of the patient.
  • the distal portion of the catheter tube 1 has a conical front portion 9.
  • the balloon unit 2 In the dilated state, the balloon unit 2 has an axially extended cylindrical section 10, a distal end section 11 and a proximal end setion 12.
  • the evacuated inner space 5 is to be filled with hot, possibly pressurized liquid through lumen 3.
  • the cylindrical section 10 in the working position of the balloon catheter has a flat outward surface and is manufactured of heat-conducting material so that an intimate heat-transferring contact is obtained between the cylindrical section 10 and the inner surface of the blood vessel 6.
  • the heat content of the hot liquid causes the wall surface of the blood vessel to thermally coagulate with the result that the heat treatment provides for the wall surface of the blood vessel to smooth out, thus promoting the circulation.
  • heat insulating means are provided in the form of a reflective layer 13 and a reflective layer 14 provided at the respective distal and proximal end sections 11, 12 of the balloon unit.
  • the reflective layer provided on the inner surface of the balloon unit serves as a heat insulation by exploiting the so-called thermo effect.
  • the thermo effect may be intensified by providing also the outer surface of the end sections 11 and 12 with a reflective coating as indicated by the brooken lines 15, 16.
  • the reflective coating may for example be silver, aluminium or gold applied for example by painting, vacuum deposition, glueing or welding.
  • FIG 3 there is shown another embodiment of the balloon catheter according to the invention.
  • the embodiment is distin ⁇ guished from the embodiment shown in Figure 1 by the fact that the heat insulating means are in the form of an air- filled distal chamber 17 and an air-filled proximal chamber 18.
  • the distal chamber 17 is formed by a concentric wall 19 sloping in relation to the longitudinal axis of the catheter tube and having an annular distal edge surface 20 sealingly anchored at a distal portion 21 of the catheter tube.
  • This distal portion 21 is situated ahead of, e.g. distally in relation to a first portion 22 situated ahead of the distal end section 11 of the balloon unit.
  • An annular proximal end surface 23 of the wall 19 is sealingly anchored at a radially outer portion 24 of the distal end section 11 of the balloon unit.
  • the proximal chamber 18 is formed by a concentric wall 25 inclined in relation to the longitudinal axis of the catheter tube having an annular proximal edge surface 26 sealingly anchored around a portion 27 of the catheter tube.
  • This proximal portion 27 is situated at the proximal end of the portion 28 situated behind the proximal end section 12 of the balloon unit.
  • An annular distal end surface 29 of the wall 25 is sealingly anchored at a radially outer portion 30 of the proximal end section 12 of the balloon unit.
  • a lumen 31 is in communicating connection with chambers 17 and 18.
  • a lumen 3 is in communicating connection with an air source and a lumen 31 communicates with a source of hot liquid.
  • Figure 5 shows a modification of the embodiment according to Figure 1.
  • the lumen 3 for supplying hot water to the inner space 5 extends to the distal portion of the space where it passes through the wall of the catheter tube at a wall opening 34.
  • the hot liquid supplied in this way flows in a backward direction and is discharged through a wall opening 35 at the proximal end of the balloon unit 2.
  • An additional lumen 36 is connected to this wall opening 35 to discharge the hot liquid. Thanks to this embodiment hot liquid may be circulated through the inner space 5 of the balloon unit exposing the vessel to a particularly effective thermal action.
  • This embodiment is suitable for thermo-coagulation and the volume 5 is small and the liquid is cooled by the human body.
  • X-ray contrast substance is added to the hot liquid enabling the operator to control easily the position of the balloon catheter in the blood vessel.
  • the hot liquid is preferably an X-ray contrast solution having a temperature in an approximative range from 50° to 90°C.
  • the hot liquid may be a salt solution, a blood substitute such as dextran, or other bio-compatible liquids.
  • hydrogen or nitrogen gas or mixtures thereof may be used.
  • the distal and proximal end sections 11, 12 may comprise particles of heat insulating material mixed into the end sections 11, 12.
  • end sections 11, 12 may be manufactured of a flexible material having heat insulating properties.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Pulmonology (AREA)
  • Hematology (AREA)
  • Anesthesiology (AREA)
  • Biophysics (AREA)
  • Child & Adolescent Psychology (AREA)
  • Vascular Medicine (AREA)
  • Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Media Introduction/Drainage Providing Device (AREA)

Abstract

Le cathéter à ballonet permettant de canaliser des vaisseaux sanguins occlus, comprend un tube de cathéter (1) et une unité à ballonet s'étendant longtitudinalement (2). Ladite unité à ballonet est dotée d'une partie cylindrique s'étendant longitudinalement (10) ainsi que de deux parties terminales (11, 12). L'invention se caractérise par le fait qu'elle comprend des moyens calorifuges (13-16) disposés dans lesdites parties terminales (11, 12) de l'unité à ballonet ainsi que par le fait que ladite partie cylindrique (10) est fabriquée à partir d'une matière calorifuge. L'introduction, à travers ledit passage, de liquide chaud dans l'espace interne, permet d'exposer la paroi superficielle d'un vaisseau sanguin (6) à un procédé thermique, l'addition d'une matière de contraste à rayons X étant éventuellement possible.
PCT/SE1990/000297 1989-06-26 1990-05-07 Catheter a ballonet pour canalisation de vaisseaux sanguins occlus WO1991000118A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8902307A SE463960B (sv) 1989-06-26 1989-06-26 Ballongkateter foer kanalisering av ockluderade blodkaerl
SE8902307-1 1989-06-26

Publications (1)

Publication Number Publication Date
WO1991000118A1 true WO1991000118A1 (fr) 1991-01-10

Family

ID=20376395

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1990/000297 WO1991000118A1 (fr) 1989-06-26 1990-05-07 Catheter a ballonet pour canalisation de vaisseaux sanguins occlus

Country Status (3)

Country Link
AU (1) AU5844090A (fr)
SE (1) SE463960B (fr)
WO (1) WO1991000118A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993004727A1 (fr) * 1991-08-30 1993-03-18 American Medical Systems Catheter a ballonnet
WO1994019046A1 (fr) * 1993-02-26 1994-09-01 Leif Nilsson Catheter entierement ou partiellement compose d'un materiau synthetique electroconducteur
EP0678006A4 (fr) * 1991-05-03 1994-10-24 Milton H Goldrath Appareil de coagulation de l'endometre et procede chirurgical de destruction thermique dudit endometre.
WO1996026695A3 (fr) * 1995-03-01 1996-10-10 Atos Medical Ab Dispositif de traitement par hyperthermie
US6402720B1 (en) * 1997-12-22 2002-06-11 Cordis Corporation Balloon catheter with elongated flexible tip
EP1207801A4 (fr) * 1999-08-20 2003-05-02 Radiant Medical Inc Catheter d'echange thermique comportant des elements d'echange thermique distincts
DE102013104020A1 (de) * 2013-04-22 2014-10-23 Acandis Gmbh & Co. Kg Medizinischer Katheter, insbesondere zur Zufuhr von medizinischen Instrumenten, und Behandlungssystem mit einem derartigen Katheter
WO2018028805A1 (fr) 2016-08-12 2018-02-15 Medical Development Technologies S.A. Dispositif d'interruption de flux sanguin pour isolation d'un dispositif d'implant pour ablation
DE102013104021B4 (de) 2013-04-22 2022-01-20 Adceris Gmbh & Co. Kg Medizinischer Katheter zum endovaskulären Temperieren von Blut, Behandlungssystem und Herstellungsverfahren
WO2022147611A1 (fr) * 2021-01-05 2022-07-14 Cosm Medical Corp. Méthodes et systèmes pour l'ajustement d'un dispositif thérapeutique vaginal

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182689A2 (fr) * 1984-10-24 1986-05-28 The Beth Israel Hospital Association Appareillage pour "angioplasty"
EP0205851A1 (fr) * 1985-05-10 1986-12-30 Max Dr. Hubmann Cathéter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0182689A2 (fr) * 1984-10-24 1986-05-28 The Beth Israel Hospital Association Appareillage pour "angioplasty"
EP0205851A1 (fr) * 1985-05-10 1986-12-30 Max Dr. Hubmann Cathéter

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0678006A4 (fr) * 1991-05-03 1994-10-24 Milton H Goldrath Appareil de coagulation de l'endometre et procede chirurgical de destruction thermique dudit endometre.
WO1993004727A1 (fr) * 1991-08-30 1993-03-18 American Medical Systems Catheter a ballonnet
US5707367A (en) * 1993-02-26 1998-01-13 Nilsson; Leif Catheter comprised of or including electrically conductive synthetic material
WO1994019046A1 (fr) * 1993-02-26 1994-09-01 Leif Nilsson Catheter entierement ou partiellement compose d'un materiau synthetique electroconducteur
AU681381B2 (en) * 1993-02-26 1997-08-28 Leif Nilsson A catheter comprised of or including electrically conductive synthetic material
US6224591B1 (en) 1995-03-01 2001-05-01 Atos Medical Ab Device and method for hyperthermia treatment
WO1996026695A3 (fr) * 1995-03-01 1996-10-10 Atos Medical Ab Dispositif de traitement par hyperthermie
US6402720B1 (en) * 1997-12-22 2002-06-11 Cordis Corporation Balloon catheter with elongated flexible tip
EP1207801A4 (fr) * 1999-08-20 2003-05-02 Radiant Medical Inc Catheter d'echange thermique comportant des elements d'echange thermique distincts
DE102013104020A1 (de) * 2013-04-22 2014-10-23 Acandis Gmbh & Co. Kg Medizinischer Katheter, insbesondere zur Zufuhr von medizinischen Instrumenten, und Behandlungssystem mit einem derartigen Katheter
DE102013104021B4 (de) 2013-04-22 2022-01-20 Adceris Gmbh & Co. Kg Medizinischer Katheter zum endovaskulären Temperieren von Blut, Behandlungssystem und Herstellungsverfahren
DE102013104020B4 (de) 2013-04-22 2022-01-20 Acandis Gmbh Medizinischer Katheter zur Zufuhr von medizinischen Instrumenten und Behandlungssystem mit einem derartigen Katheter
WO2018028805A1 (fr) 2016-08-12 2018-02-15 Medical Development Technologies S.A. Dispositif d'interruption de flux sanguin pour isolation d'un dispositif d'implant pour ablation
WO2022147611A1 (fr) * 2021-01-05 2022-07-14 Cosm Medical Corp. Méthodes et systèmes pour l'ajustement d'un dispositif thérapeutique vaginal

Also Published As

Publication number Publication date
SE8902307L (sv) 1990-12-27
SE8902307D0 (sv) 1989-06-26
SE463960B (sv) 1991-02-18
AU5844090A (en) 1991-01-17

Similar Documents

Publication Publication Date Title
US5045056A (en) Method and device for thermal ablation of hollow body organs
AU734265B2 (en) Urethral warming catheter
US4754752A (en) Vascular catheter
CA1253216A (fr) Appareil medical pour appliquer de la chaleur localement
US5222938A (en) Method for thermal ablation of hollow body organs
US5100388A (en) Method and device for thermal ablation of hollow body organs
US6579285B2 (en) Photoablation with infrared radiation
US5861021A (en) Microwave thermal therapy of cardiac tissue
US6017338A (en) Fluid cooled and perfused tip for a catheter
AU655262B2 (en) Method and device for thermal ablation having improved heat transfer
US5776176A (en) Microwave antenna for arterial for arterial microwave applicator
US5409483A (en) Direct visualization surgical probe
US4848339A (en) Laser heated intravascular cautery cap assembly
US20040167503A1 (en) Malleable surgical ablation instruments
US5344398A (en) Heated balloon catheter
CA2230890A1 (fr) Procede et systeme pour chauffer directement une solution fluidique a l'interieur d'un organe creux de l'organisme
EP0597463A2 (fr) Sonde de thermothérapie
JP4116882B2 (ja) 哺乳類の管または腔を圧力または熱によって治療するためのバルーンカテーテルおよび方法
JPH04505569A (ja) 加熱されたバルーン要素を有する拡張カテーテル
EP2292170A3 (fr) Alimentation de fluide cryochirurgical
JPS62268552A (ja) レ−ザ光線を放射するためのカテ−テル
WO2005120379A2 (fr) Procedes et dispositifs d'application d'energie d'ablation
WO1991000118A1 (fr) Catheter a ballonet pour canalisation de vaisseaux sanguins occlus
WO1999005996A1 (fr) Procede et appareil permettant de maintenir la temperature corporelle lors d'une intervention chirurgicale
JPH06233779A (ja) 医療用融除カテーテル

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB IT LU NL SE

NENP Non-entry into the national phase

Ref country code: CA