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GB2271932A - Electrode for tissue coagulation - Google Patents

Electrode for tissue coagulation Download PDF

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Publication number
GB2271932A
GB2271932A GB9223003A GB9223003A GB2271932A GB 2271932 A GB2271932 A GB 2271932A GB 9223003 A GB9223003 A GB 9223003A GB 9223003 A GB9223003 A GB 9223003A GB 2271932 A GB2271932 A GB 2271932A
Authority
GB
United Kingdom
Prior art keywords
electrode
basket
gall
bladder
coagulation
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.)
Granted
Application number
GB9223003A
Other versions
GB9223003D0 (en
GB2271932B (en
Inventor
George Thomas Watts
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
Priority to GB9223003A priority Critical patent/GB2271932B/en
Publication of GB9223003D0 publication Critical patent/GB9223003D0/en
Publication of GB2271932A publication Critical patent/GB2271932A/en
Application granted granted Critical
Publication of GB2271932B publication Critical patent/GB2271932B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • 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
    • A61B18/1485—Probes or electrodes therefor having a short rigid shaft for accessing the inner body through natural openings
    • 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
    • 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
    • A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
    • A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00053—Mechanical features of the instrument of device
    • A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
    • 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
    • A61B2018/00214—Expandable means emitting energy, e.g. by elements carried thereon
    • A61B2018/00267—Expandable means emitting energy, e.g. by elements carried thereon having a basket shaped structure
    • 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
    • A61B2018/00505—Urinary tract

Landscapes

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

Abstract

A collapsible electrode for coagulation of tissue without damage to adjacent structures increases the safety of surgery on the gall-bladder. It is carried in an insulating sheath to protect other structures and allow insertion into the organ whose interior surface is to be coagulated. The electrode is in the form of a basket or cage formed of spiral wires of springy metal. <IMAGE>

Description

SURGICAL INSTRUMENT for TISSUE COAGULATION The commonest major abdominal surgical operation is removal of the gall-bladder. This prevents the formation of gall-stones and infection in this backwater of the biliary tree. This operation has as its greatest and sometimes fatal complication, damage to the main ducts between liver and intestines and also to adjacent blood-vessels when the duct ( cystic duct joining gall-bladder and main duct is disssected to remove the organ. The risk is doubled in some more modern operations designed to be done endoscopically (i.e. using special telescopes through small incisions with the object of avoiding conventional large ones ).
The object of the operation is to close off the backwater of the gall-bladder by removing it, but a procedure to close it off by fibrosis ( scarring ) has the same effect. This can be done by coagulating the lining electrically or by other means. This removes the need to dissect the vessels and duct in the danger area.
fig. 3 at A ). To be effective however, the whole of the lining ( mucous membrane ) of the gall-bladder must be coagulated to destroy it. This instrument makes this possible from within the organ. Further, since it is easier to perform, it also reduces the time needed for surgery with further advantage in safety and with financial savings from this.
The device is a cage of spiral wires of springy metal joined at both ends as shown in Fig.1.This cage is joined at one end to another thicker wire which is used to pass electrical current to the basket and thence to the mucous membrane of the gall-bladder. This wire can also be used to withdraw the basket into an insulated sheath. It can equally be used to protrude the basket from the sheath as in fig.2. . This sheath prevents electrical current from reaching other structures such as the abdominal wall. By virtue of the springy nature of the basket and its shape, it is able to collapse to allow it to enter the sheath.
The basket can be made in various sizes to allow for various sizes of gall-bladder.
In use, the sheath with the basket retracted, is passed through the wall of the organ as in fig 3a. The basket is then passed to the end of the organ by pushing on the larger wire. As it is pushed out it expands again to make contact with the wall of the gall-bladder as in fig.3b. An electrical current is then passed to the basket which is drawn back at an appropriate rate for the current used until the basket reaches the proximal end of the organ again when it once more enters the insulated sheath and the current flow is stopped. The spiral shape of the basket wires ensures that the whole surface of the lining is coagulated as the wires lie in a diagonal to the line of movement of the basket (fig.4). After the whole of the mucous membrane has been destroyed, the basket can be fully retracted into the sheath and withdrawn from the body.
This instrument can also be used in open surgery as well as in endoscopic methods and would have the same merits. It can be used on other hollow organs where the size would be adjusted to the size of the organ.

Claims (4)

Claims
1.An electrode is described which simplifies operations on the gall-bladder or other organs by substituting coagulation with subsequent scar obliteration for removal removes the need for dangerous dissection.
2.By avoiding such risks in dissection the operation is made safer and quicker.
3.The design of the electrode makes possible coagulation of the entire surface of the lining of the organ so ensuring full destruction of the lining.
4.The instrument can be used on other organs for similar purposes.
GB9223003A 1992-11-03 1992-11-03 Surgical instrument for tissue coagulation Expired - Fee Related GB2271932B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9223003A GB2271932B (en) 1992-11-03 1992-11-03 Surgical instrument for tissue coagulation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9223003A GB2271932B (en) 1992-11-03 1992-11-03 Surgical instrument for tissue coagulation

Publications (3)

Publication Number Publication Date
GB9223003D0 GB9223003D0 (en) 1992-12-16
GB2271932A true GB2271932A (en) 1994-05-04
GB2271932B GB2271932B (en) 1996-05-08

Family

ID=10724449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9223003A Expired - Fee Related GB2271932B (en) 1992-11-03 1992-11-03 Surgical instrument for tissue coagulation

Country Status (1)

Country Link
GB (1) GB2271932B (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999023961A1 (en) * 1997-11-12 1999-05-20 Vnus Medical Technologies, Inc. Catheter having expandable electrodes and adjustable stent
WO1999060933A1 (en) * 1998-05-22 1999-12-02 Scimed Life Systems, Inc. Medical retrieval basket
US6315778B1 (en) 1999-09-10 2001-11-13 C. R. Bard, Inc. Apparatus for creating a continuous annular lesion
US6800080B1 (en) 1996-05-03 2004-10-05 Scimed Life Systems, Inc. Medical retrieval device
US6837886B2 (en) 2000-05-03 2005-01-04 C.R. Bard, Inc. Apparatus and methods for mapping and ablation in electrophysiology procedures
US7255695B2 (en) 2001-04-27 2007-08-14 C.R. Bard, Inc. Systems and methods for three-dimensional mapping of electrical activity
US7722604B2 (en) 2003-03-28 2010-05-25 C.R. Bard, Inc. Braided mesh catheter
US7727229B2 (en) 2001-05-01 2010-06-01 C.R. Bard, Inc. Method and apparatus for altering conduction properties in the heart and in adjacent vessels
US8249685B2 (en) 2004-05-17 2012-08-21 C.R. Bard, Inc. Method and apparatus for mapping and/or ablation of cardiac tissue
US10022178B2 (en) 2013-02-20 2018-07-17 Cook Medical Technologies Llc Expandable mesh platform for large area ablation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392837A2 (en) * 1989-04-13 1990-10-17 Leslie Alexander Geddes Apparatus for thermally destroying tissue
EP0472368A2 (en) * 1990-08-21 1992-02-26 Med Institute, Inc. Ablation catheter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0392837A2 (en) * 1989-04-13 1990-10-17 Leslie Alexander Geddes Apparatus for thermally destroying tissue
EP0472368A2 (en) * 1990-08-21 1992-02-26 Med Institute, Inc. Ablation catheter

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6096053A (en) * 1996-05-03 2000-08-01 Scimed Life Systems, Inc. Medical retrieval basket
US6800080B1 (en) 1996-05-03 2004-10-05 Scimed Life Systems, Inc. Medical retrieval device
US7717924B2 (en) 1996-05-03 2010-05-18 Boston Scientific Scimed, Inc. Medical retrieval device
WO1999023961A1 (en) * 1997-11-12 1999-05-20 Vnus Medical Technologies, Inc. Catheter having expandable electrodes and adjustable stent
US6263248B1 (en) 1997-11-12 2001-07-17 Vnus Medical Technologies, Inc. Catheter having expandable electrodes and adjustable stent
WO1999060933A1 (en) * 1998-05-22 1999-12-02 Scimed Life Systems, Inc. Medical retrieval basket
US6315778B1 (en) 1999-09-10 2001-11-13 C. R. Bard, Inc. Apparatus for creating a continuous annular lesion
US7306594B2 (en) 2000-05-03 2007-12-11 C.R. Bard, Inc. Apparatus and methods for mapping and ablation in electrophysiology procedures
US6837886B2 (en) 2000-05-03 2005-01-04 C.R. Bard, Inc. Apparatus and methods for mapping and ablation in electrophysiology procedures
US8157796B2 (en) 2000-05-03 2012-04-17 C.R. Bard, Inc. Apparatus and methods for mapping and ablation in electrophysiology procedures
US9028486B2 (en) 2000-05-03 2015-05-12 Boston Scientific Scimed Inc. Methods of using a catheter having a braided conductive member
US7255695B2 (en) 2001-04-27 2007-08-14 C.R. Bard, Inc. Systems and methods for three-dimensional mapping of electrical activity
US7727229B2 (en) 2001-05-01 2010-06-01 C.R. Bard, Inc. Method and apparatus for altering conduction properties in the heart and in adjacent vessels
US8951247B2 (en) 2001-05-01 2015-02-10 Boston Scientific Scimed, Inc. Methods and apparatus for forming cardiac lesions and assessing lesion quality
US7722604B2 (en) 2003-03-28 2010-05-25 C.R. Bard, Inc. Braided mesh catheter
US8249685B2 (en) 2004-05-17 2012-08-21 C.R. Bard, Inc. Method and apparatus for mapping and/or ablation of cardiac tissue
US8527027B2 (en) 2004-05-17 2013-09-03 C.R. Bard, Inc. Method and apparatus for mapping and/or ablation of cardiac tissue
US10022178B2 (en) 2013-02-20 2018-07-17 Cook Medical Technologies Llc Expandable mesh platform for large area ablation

Also Published As

Publication number Publication date
GB9223003D0 (en) 1992-12-16
GB2271932B (en) 1996-05-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19971103