WO2003051215A1 - Catheter for ablation of resected parts - Google Patents

Catheter for ablation of resected parts Download PDF

Info

Publication number
WO2003051215A1
WO2003051215A1 PCT/IT2002/000765 IT0200765W WO03051215A1 WO 2003051215 A1 WO2003051215 A1 WO 2003051215A1 IT 0200765 W IT0200765 W IT 0200765W WO 03051215 A1 WO03051215 A1 WO 03051215A1
Authority
WO
WIPO (PCT)
Prior art keywords
tubular element
catheter
radio
parts
frequency
Prior art date
Application number
PCT/IT2002/000765
Other languages
French (fr)
Inventor
Luigi Venturelli
Original Assignee
Fogazzi Di Venturelli Andrea & C. S.N.C.
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 Fogazzi Di Venturelli Andrea & C. S.N.C. filed Critical Fogazzi Di Venturelli Andrea & C. S.N.C.
Priority to AU2002361496A priority Critical patent/AU2002361496A1/en
Publication of WO2003051215A1 publication Critical patent/WO2003051215A1/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B18/1492—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
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—Ablation
    • 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
    • A61B2018/00815—Temperature measured by a thermistor

Definitions

  • This invention concerns in general the catheters for surgical use and refers in particular to a catheter for a radio-frequency ablation of resected parts.
  • One object of the invention is to propose and provide a new and original catheter specifically designed for radio-frequency treatment of resected parts.
  • a further object of the invention is to provide a catheter with a particular ablation and treatment head for the resected parts and which the lead of a probe for measuring the temperature of the parts being treated can pass through.
  • catheter for the ablation of resected parts which includes a tubular radio- frequency conductor element, enveloped in an insulating sheath and having a proximal and a distal end, a fitting connected to the proximal end of the tubular element and which can be connected to a radio-frequency generator, and a treatment head attached to the distal end of said tubular element.
  • the catheter for ablation includes a probe lead passing longitudinally inside the tubular element and connectable to a thermistor to measure the temperature in the vicinity of the treatment head.
  • Fig. 1 shows a comprehensive view of a catheter for ablation Fig. 2. shows an enlarged cross-section according to arrows A - A in Fig.
  • Fig. 3 shows an enlarged partial cross-section of the proximal end of the catheter, circled and specified with the letter P in Fig. 1;
  • Fig. 4 shows an enlarged partial cross-section of the of the distal end with treatment head circled and specified with the letter D in Fig. 1 ;
  • Fig. 5 shows the catheter in Fig.l complete with thermistor to measure the temperature.
  • the catheter is made up of a tubular element (11) and a treatment head (12).
  • the tubular element (11) is made of a radio-frequency conductor material, enveloped in an external insulating sheath (13) and has a longitudinal duct (14). It has a proximal end P and with a distal end D.
  • the proximal end P is inserted in a grip (14') and is connectable, at point (15), to a lead (16) which terminates in a connector (17) which can be coupled to a radio-frequency generator.
  • the distal end D has attached the treatment head (12).
  • This head (12) is basically mushroom shaped and the size can be chosen according to the type of treatment to be carried out. It has a front functional surface (18) which is convex and, on the underside, a dorsal surface and a stem with a covered by an insulating coating (19) reaching as far as the insulating sheath (13) covering the tubular element (11).
  • the head (12) of the catheter described above is useful in particular for ablation and in general for treating resected parts.
  • the longitudinal duct (14) of the tubular element (11) can be threaded, from the proximal end exiting at the distal end - see Fig. 5 - with a thermistor lead (20) to read and measure the temperature level of the treatment head, that is of the area surrounding the resected part and being treated by the catheter.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Medical Informatics (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Cardiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Media Introduction/Drainage Providing Device (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention concerns a catheter for treatment in particular of resected parts, characterised by a radio-frequency conductor tubular element (11), covered externally by an insulating sheath (13) and having a proximal (P) and a distal end (D), a connector (17) attached to the proximal end of the tubular element (11) connectable to a radio-frequency generator, and a functional head (12) attached and in contact with the distal end of said tubular element and forming a surface for radio-frequency treatment of the required parts.

Description

"CATHETERFORABLATIONOFRESECTED PARTS"
* * *
Technical Field
This invention concerns in general the catheters for surgical use and refers in particular to a catheter for a radio-frequency ablation of resected parts.
The operation of resection of parts or organs of the body requires particular and accurate ablation treatment in order to remove what is necessary and appropriate to favour ulosis. Summary of the Invention
One object of the invention is to propose and provide a new and original catheter specifically designed for radio-frequency treatment of resected parts. A further object of the invention is to provide a catheter with a particular ablation and treatment head for the resected parts and which the lead of a probe for measuring the temperature of the parts being treated can pass through.
These objects have been achieved in compliance with the invention by catheter for the ablation of resected parts which includes a tubular radio- frequency conductor element, enveloped in an insulating sheath and having a proximal and a distal end, a fitting connected to the proximal end of the tubular element and which can be connected to a radio-frequency generator, and a treatment head attached to the distal end of said tubular element.
In addition, the catheter for ablation includes a probe lead passing longitudinally inside the tubular element and connectable to a thermistor to measure the temperature in the vicinity of the treatment head. Brief Description of the Drawings The catheter according to the invention will moreover be described in detail making reference to the enclosed indicative and not limitative drawings, in which:
Fig. 1 shows a comprehensive view of a catheter for ablation Fig. 2. shows an enlarged cross-section according to arrows A - A in Fig.
1;
Fig. 3 shows an enlarged partial cross-section of the proximal end of the catheter, circled and specified with the letter P in Fig. 1;
Fig. 4 shows an enlarged partial cross-section of the of the distal end with treatment head circled and specified with the letter D in Fig. 1 ; and
Fig. 5 shows the catheter in Fig.l complete with thermistor to measure the temperature. Detailed Description of the Invention
As represented in the drawings, the catheter is made up of a tubular element (11) and a treatment head (12). The tubular element (11) is made of a radio-frequency conductor material, enveloped in an external insulating sheath (13) and has a longitudinal duct (14). It has a proximal end P and with a distal end D. The proximal end P is inserted in a grip (14') and is connectable, at point (15), to a lead (16) which terminates in a connector (17) which can be coupled to a radio-frequency generator. The distal end D has attached the treatment head (12).
This head (12) is basically mushroom shaped and the size can be chosen according to the type of treatment to be carried out. It has a front functional surface (18) which is convex and, on the underside, a dorsal surface and a stem with a covered by an insulating coating (19) reaching as far as the insulating sheath (13) covering the tubular element (11). When connected to the radio-frequency generator, the head (12) of the catheter described above is useful in particular for ablation and in general for treating resected parts.
Moreover, the longitudinal duct (14) of the tubular element (11) can be threaded, from the proximal end exiting at the distal end - see Fig. 5 - with a thermistor lead (20) to read and measure the temperature level of the treatment head, that is of the area surrounding the resected part and being treated by the catheter.

Claims

"CATHETER FOR ABLATION OF RESECTED PARTS"C L A I M S
1. A catheter for treatment in particular of resected parts, characterised by a radio-frequency conductor tubular element (11), covered externally by an insulating sheath (13) and having a proximal (P) and a distal end (D), a connector (17) coupled to the proximal end of the tubular element (11) and connectable to a radio-frequency generator, and a functional head (12) attached and in contact with the distal end of said tubular element and forming a surface for radio-frequency treatment of the required parts.
2. The catheter according to claim 1, in which the functional head (12) has a convex front surface (18) and on the underside, a dorsal surface and a stem with an insulating coating leading on from the sheath covering the tubular element (11), said coating preferably being an insulating paint.
3. The catheter according to claims 1 and 2, in which the tubular element
(11) surrounds a longitudinal duct for the passage of a thermistor lead exiting from the distal end to take the temperature in the parts treated with the functional head (12).
4. The use of a catheter according to the previous claims for radio- frequency ablation of resected parts.
PCT/IT2002/000765 2001-12-17 2002-12-06 Catheter for ablation of resected parts WO2003051215A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002361496A AU2002361496A1 (en) 2001-12-17 2002-12-06 Catheter for ablation of resected parts

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBS01A000108 2001-12-17
ITBS20010108 ITBS20010108A1 (en) 2001-12-17 2001-12-17 CATHETER FOR THE ABLATION OF RESECATED AREAS

Publications (1)

Publication Number Publication Date
WO2003051215A1 true WO2003051215A1 (en) 2003-06-26

Family

ID=11440806

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2002/000765 WO2003051215A1 (en) 2001-12-17 2002-12-06 Catheter for ablation of resected parts

Country Status (3)

Country Link
AU (1) AU2002361496A1 (en)
IT (1) ITBS20010108A1 (en)
WO (1) WO2003051215A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4643186A (en) * 1985-10-30 1987-02-17 Rca Corporation Percutaneous transluminal microwave catheter angioplasty
GB2308979A (en) * 1996-01-09 1997-07-16 Gyrus Medical Ltd An electrosurgical instrument and electrode assembly
US5685839A (en) * 1982-08-12 1997-11-11 Edwards; Stuart D. Ultrasound probe with thermal sensing
US6030380A (en) * 1996-12-09 2000-02-29 Bsc Northwest Technology Center, Inc. Radio frequency transmyocardial revascularization

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5685839A (en) * 1982-08-12 1997-11-11 Edwards; Stuart D. Ultrasound probe with thermal sensing
US4643186A (en) * 1985-10-30 1987-02-17 Rca Corporation Percutaneous transluminal microwave catheter angioplasty
GB2308979A (en) * 1996-01-09 1997-07-16 Gyrus Medical Ltd An electrosurgical instrument and electrode assembly
US6030380A (en) * 1996-12-09 2000-02-29 Bsc Northwest Technology Center, Inc. Radio frequency transmyocardial revascularization

Also Published As

Publication number Publication date
ITBS20010108A1 (en) 2003-06-17
AU2002361496A1 (en) 2003-06-30

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