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WO1999051154A2 - Catheter de longueur et de forme variables - Google Patents

Catheter de longueur et de forme variables Download PDF

Info

Publication number
WO1999051154A2
WO1999051154A2 PCT/BG1999/000008 BG9900008W WO9951154A2 WO 1999051154 A2 WO1999051154 A2 WO 1999051154A2 BG 9900008 W BG9900008 W BG 9900008W WO 9951154 A2 WO9951154 A2 WO 9951154A2
Authority
WO
WIPO (PCT)
Prior art keywords
bands
cannula
movement
respect
strokes
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.)
Ceased
Application number
PCT/BG1999/000008
Other languages
English (en)
Other versions
WO1999051154A3 (fr
Inventor
Alexander R. Stefanow
Ivan R. Stefanow
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 AU31331/99A priority Critical patent/AU3133199A/en
Priority to AU31330/99A priority patent/AU3133099A/en
Priority to JP54983599A priority patent/JP2002500547A/ja
Priority to EP99913030A priority patent/EP1032317A2/fr
Publication of WO1999051154A2 publication Critical patent/WO1999051154A2/fr
Publication of WO1999051154A3 publication Critical patent/WO1999051154A3/fr
Anticipated expiration legal-status Critical
Ceased 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
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • 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
    • A61B1/00064—Constructional details of the endoscope body
    • A61B1/00071—Insertion part of the endoscope body
    • 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
    • A61B1/00147—Holding or positioning arrangements
    • A61B1/00154—Holding or positioning arrangements using guiding arrangements for insertion
    • 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
    • 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0116—Steering means as part of the catheter or advancing means; Markers for positioning self-propelled, e.g. autonomous robots
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A61B17/3439—Cannulas with means for changing the inner diameter of the cannula, e.g. expandable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/34—Trocars; Puncturing needles
    • A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B17/3421—Cannulas
    • A61B2017/3443—Cannulas with means for adjusting the length of a cannula
    • 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
    • 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
    • A61M25/0043—Catheters; Hollow probes characterised by structural features
    • 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
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0119—Eversible catheters

Definitions

  • the invention refers to a cannula of changeable length and shape, which can be used in medical application during the penetration of various devices, e.g. endoscopes, into the living systems as well as other activities, which necessitate the penetration into a medium, vulnerable to mechanical intervention and/or is without well-shaped confining walls.
  • various devices e.g. endoscopes
  • tubes, tubular elements (1-7) and devices e.g. endoscopes, including tubes and tubular elements (8, 9), which are characterised by the fact that after penetrating into the body along the existing lumens - oesophagus, blood vessels, etc. - they ensure some protection from mechanical traumas to the surrounding tissues during the operation of the devices.
  • a disadvantage of the existing tubes, tubular elements and devices containing tubes and tubular elements is the fact that during their penetration into the living system as well as during their removal, they cause considerable traumas due to the friction between their outside surface and the medium of penetration and particularly to the side pressure exerted by the sections where there are curves.
  • the patent /13/ proposes a new principle of action of a three-dimensional controllable cannula according to which the leading instrument is placed in a lumen of the cannula itself.
  • the lumen is formed during the penetration into the body without having to use ready natural ways and operates on the principle of snail horns - protruding and retracting
  • the patents does not propose a construction working on this principle, neither the moving force which will open and close the cannula.
  • the aim of the invention is to create a cannula of changeable length and shape, which is to penetrate the living system not only through the existing orifices, and which is to reduce to a minimum the traumas to the surrounding medium e.g. the human body.
  • the task is solved by a device in which the cannula is formed at entering the working medium only by lengthening the front end, which takes the turns in any direction only through growing in the same direction and which is taken out of the surrounding medium only by shortening of the front ends, keeping static all the time and keeping stable its shape.
  • the task of the invention is to create a cannula, which is to penetrate into the surrounding medium and to be taken out of it along a predetermined trajectory, keeping its shape in the sections, in which It has penetrated.
  • a cannula 1 has been created, built up of parallel to its axis bands 2, which are linked laterally with each other with links, which allow their sliding in respect to each other.
  • the bands 2 At the end of the cannula 1, with which it penetrates into the surrounding medium, the bands 2 have ledges, covered by caps 4, and these ledges allow each of them to slide past its neighbours only to a definite limited distance.
  • the penetration or the removal of the cannula 1 is effected by abrupt strokes upon one separate band 2 in the direction of the movement of cannula 1 as a whole, whereat this band 2 slides to a certain distance in respect to the bands it touches and by consecutive as abrupt strokes upon each of the remaining bands, each of them slides irrespective of the others in respect to its neighbours, until all the bands 2 move in the desired direction, and the cannula 1 as a whole is moved too.
  • the remaining bands keep their position between each other and in this way the cannula 1 keeps the shape, obtained before in each section. That is why after moving the cannula 1 in one or another direction, it keeps its shape in each of the sections of the space it has penetrated.
  • the direction of the penetration of the cannula 1 in the new sections of spaces hence the shape of the cannula 1 in the new section can be changed when from the exterior side of the turn the bands 2 move at a higher degree than the bands 2 from the internal side of the turn, and the stage of movement of the intermediate bands smoothly changes between two extreme vales. Since the ends of the bands 2 are covered by their common cap 4, which has a fixed diameter, the unequal movement of the bands results in forming a turn with an exterior side from the side of the bands, which are moved at a higher degree.
  • the advantages of the cannula 1 consist of: During the penetration and the removal of the cannula 1, its friction with the surrounding medium is minimum, as at each separate moment only one of its numerous narrow bands 2 moves only a short distance. After that this band remains static until all the remaining bands 2 move. This makes possible the relaxation of even minimal tensions created in any point of the surrounding medium, which is in contact with this band.
  • the wall of the cannula is free from any additional parts, devices and instruments, therefore the diameter of the lumen of this cannula is maximal.
  • Example 1 A cannula for movement along determined trajectory shown in fig. 1, whose wall is built up of bands 2, which are located parallelly to its axis and are linked laterally with each other by meshing a male and a female part, located respectively on each side of the band.
  • bands 2 At the end of the bands, from the end of the cannula by which it penetrates into the surrounding medium, from the external wall of the cannula, the bands have limiting ledges 3, covered by a cap 4.
  • the penetration into or the removal from the surrounding medium is effected by abrupt strokes in the direction of the cannula movement as a whole upon one of all bands of this cannula, whereat this band slides a short distance in respect to its neighbouring bands, the distance being determined by the limiting ledges at the end of each band covered by the cap.
  • Analogous, consecutive in time strokes follow upon each of the remaining bands, whereby the movement of the cannula as a whole is achieved. The repeated repetition of this cycle results in the penetration of the cannula as a whole at the desired distance in the surrounding medium.
  • the remaining bands ensure the mechanical memory of the cannula and it keeps its shape without alterations in the sections, it has already penetrated, although it still continues to penetrate or is being removed from the surrounding medium.
  • the sequence of alternating the movement of the separate bands is arbitrary within each cycle, but in order to achieve maximum relaxation of the tensions- a result of the friction with the surrounding medium and between the bands, it is better to alternate bands opposite to the cannula diameter.
  • the end of the cannula moves along a straight line when all bands move the same distance within each consecutive cycle, and it turns in the desired direction, forming a turn, when from the external side of the turn the movement of the bands is greater than the movement from the internal side of the turn and the necessary deformation of the bands is ensured by the cap in the same end.
  • Patent PF RU 2022518 Cl 13.02.91

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Pulmonology (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Robotics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Endoscopes (AREA)
  • Surgical Instruments (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)

Abstract

Cette invention a trait à un cathéter devant se déplacer le long d'un trajet déterminé, lequel cathéter est constitué de plusieurs bandes longitudinales, reliées par des articulations en croix, ce qui leur permet de coulisser relativement les unes aux autres. Le mouvement du cathéter est occasionné par une poussée brusque exercée longitudinalement sur une bande séparée, ce qui la fait glisser sur une distance déterminée relativement aux autres bandes voisines, les bandes restantes demeurant liées et immobiles. Cette première poussée est suivie d'autres poussées identiques exercées successivement sur chacune des bandes restantes, le cycle étant répété jusqu'à ce que la distance désirée soit franchie. Le fait de maintenir immobiles les bandes à l'exception d'une seule assure la mémoire mécanique du cathéter pour ce qui est de son positionnement dans les différents segments d'espace et de son déplacement le long d'un trajet déterminé.
PCT/BG1999/000008 1998-04-02 1999-04-01 Catheter de longueur et de forme variables Ceased WO1999051154A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU31331/99A AU3133199A (en) 1998-04-02 1999-04-01 A cannula of changeable length and shape
AU31330/99A AU3133099A (en) 1998-04-02 1999-04-01 A cannula of changeable length and shape
JP54983599A JP2002500547A (ja) 1998-04-02 1999-04-01 可変的長さと形状を有するカニューレ
EP99913030A EP1032317A2 (fr) 1998-04-02 1999-04-01 Catheter de longueur et de forme variables

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG102366A BG102366A (en) 1998-04-02 1998-04-02 Canal with alternating length and form
BG102368 1998-04-02

Publications (2)

Publication Number Publication Date
WO1999051154A2 true WO1999051154A2 (fr) 1999-10-14
WO1999051154A3 WO1999051154A3 (fr) 1999-11-18

Family

ID=3927410

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/BG1999/000006 Ceased WO1999051152A2 (fr) 1998-04-02 1999-04-01 Catheter de longueur et de forme variables
PCT/BG1999/000008 Ceased WO1999051154A2 (fr) 1998-04-02 1999-04-01 Catheter de longueur et de forme variables

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/BG1999/000006 Ceased WO1999051152A2 (fr) 1998-04-02 1999-04-01 Catheter de longueur et de forme variables

Country Status (4)

Country Link
EP (2) EP1032317A2 (fr)
AU (2) AU3133199A (fr)
BG (1) BG102366A (fr)
WO (2) WO1999051152A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010011348A1 (fr) * 2008-07-23 2010-01-28 Alphatec Spine, Inc. Procédé et dispositif d'accès à la colonne vertébrale curviligne

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1477371A1 (ru) 1987-04-07 1989-05-07 Киевский Филиал Ленинградского Специального Конструкторского Бюро По Проектированию Кожгалантерейных, Обувных, Меховых Машин И Средств Автоматизации Машина дл креплени деталей низа обуви по контуру, например ранта
SU1480806A1 (ru) 1987-07-06 1989-05-23 Научно-Исследовательский Институт Лазерной Хирургии Гибка управл ема трубка
US5448989A (en) 1993-02-22 1995-09-12 Richard Wolf Gmbh Medical instrument shaft capable of positive and non-positive linking of segments
US5558665A (en) 1994-06-24 1996-09-24 Archimedes Surgical, Inc. Surgical instrument and method for intraluminal retraction of an anatomic structure
US5620408A (en) 1995-04-14 1997-04-15 Vennes; Jack A. Endoscopic over-tube
US5643174A (en) 1993-08-18 1997-07-01 Sumitomo Bakelite Company Limited Endoscopic guide tube with embedded coil spring
US5645520A (en) 1994-10-12 1997-07-08 Computer Motion, Inc. Shape memory alloy actuated rod for endoscopic instruments

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799152A (en) * 1972-08-21 1974-03-26 S Kim Flexible and expandable esophagoscope
DE3329176C1 (de) * 1983-08-12 1984-11-22 Sterimed Gesellschaft für medizinischen Bedarf mbH, 6600 Saarbrücken Medizinisches Gerät mit Einführungshilfe
DE3943872B4 (de) * 1989-08-01 2005-08-25 Stm Medizintechnik Starnberg Gmbh Vorrichtung zum Einführen eines medizinischen Endoskops in einen Körperkanal
US5312417A (en) * 1992-07-29 1994-05-17 Wilk Peter J Laparoscopic cannula assembly and associated method
US5658309A (en) * 1995-05-01 1997-08-19 C. R. Bard, Inc. Guidewire/inflation tube locking apparatus and method of use
DE19729499A1 (de) * 1997-07-10 1999-01-14 Friedrich Schiller Uni Jena Bu Vorrichtung zum Erleichtern der Vorschubbewegung von flexiblen Endoskopen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1477371A1 (ru) 1987-04-07 1989-05-07 Киевский Филиал Ленинградского Специального Конструкторского Бюро По Проектированию Кожгалантерейных, Обувных, Меховых Машин И Средств Автоматизации Машина дл креплени деталей низа обуви по контуру, например ранта
SU1480806A1 (ru) 1987-07-06 1989-05-23 Научно-Исследовательский Институт Лазерной Хирургии Гибка управл ема трубка
US5448989A (en) 1993-02-22 1995-09-12 Richard Wolf Gmbh Medical instrument shaft capable of positive and non-positive linking of segments
US5643174A (en) 1993-08-18 1997-07-01 Sumitomo Bakelite Company Limited Endoscopic guide tube with embedded coil spring
US5558665A (en) 1994-06-24 1996-09-24 Archimedes Surgical, Inc. Surgical instrument and method for intraluminal retraction of an anatomic structure
US5645520A (en) 1994-10-12 1997-07-08 Computer Motion, Inc. Shape memory alloy actuated rod for endoscopic instruments
US5620408A (en) 1995-04-14 1997-04-15 Vennes; Jack A. Endoscopic over-tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010011348A1 (fr) * 2008-07-23 2010-01-28 Alphatec Spine, Inc. Procédé et dispositif d'accès à la colonne vertébrale curviligne

Also Published As

Publication number Publication date
AU3133099A (en) 1999-10-25
AU3133199A (en) 1999-10-25
WO1999051152A8 (fr) 1999-12-29
EP1006901A2 (fr) 2000-06-14
WO1999051154A3 (fr) 1999-11-18
WO1999051152A2 (fr) 1999-10-14
BG102366A (en) 1999-10-29
WO1999051152A3 (fr) 1999-11-18
EP1032317A2 (fr) 2000-09-06

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