[go: up one dir, main page]

WO2005016133A1 - Endoscope souple a fibres optiques - Google Patents

Endoscope souple a fibres optiques Download PDF

Info

Publication number
WO2005016133A1
WO2005016133A1 PCT/GB2004/003317 GB2004003317W WO2005016133A1 WO 2005016133 A1 WO2005016133 A1 WO 2005016133A1 GB 2004003317 W GB2004003317 W GB 2004003317W WO 2005016133 A1 WO2005016133 A1 WO 2005016133A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibreoptic
endoscope
flexible
fibreoptic endoscope
combined assembly
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/GB2004/003317
Other languages
English (en)
Inventor
Paul Orr
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 WO2005016133A1 publication Critical patent/WO2005016133A1/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
    • 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
    • A61B1/00073—Insertion part of the endoscope body with externally grooved shaft
    • 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
    • A61B1/00131—Accessories for endoscopes
    • A61B1/00135—Oversleeves mounted on the endoscope prior to 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
    • A61B1/00142—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 with means for preventing contamination, e.g. by using a sanitary sheath

Definitions

  • the present invention relates to fibreoptic endoscopes and in particular to a flexible fibreoptic endoscope whose design significantly reduces the sterilisation requirements on the device.
  • Flexible fibreoptic endoscopes are frequently used within the medical field for a range of medical procedures e.g. gastroscopy, bronchoscopy, laryngoscopy, colonoscopy, cystoscopy.
  • a typical fibreoptic endoscope 1 employed in the prior art is presented in Figure 1.
  • the fibreoptic endoscope 1 comprises a flexible shaft 2 that completely encloses a number of fibreoptic image transmitting illumination fibres 3, and a lens 4.
  • Fibreoptic endoscopes are expensive to manufacture and therefore are used in the course of their lifetime for a number of medical procedures carried out on a number of different patients .
  • the repeated employment of fibreoptic endoscopes places a strict requirement for stringent sterilisation of the device between medical procedures due to the existence of bacterial endospores .
  • Prions are cellular glyco- proteins which are responsible for diseases such as varient Creutzfeldt-Jakob Disease (vCJD) and Bovine Spongieform Encephalitis (BSE) . They have been found in large quantities in tissues such as tonsils, other lymphoid tissue and in the bowel (particularly the appendix) . They bind readily to the surfaces of metal and plastic objects without losing their infectivity, and they are known to be resistant to the normal sterilisation procedures described above.
  • vCJD varient Creutzfeldt-Jakob Disease
  • BSE Bovine Spongieform Encephalitis
  • the hollow tube 5 in particular is known to those skilled in the art to be a source of cross contamination as this feature tends to be extremely difficult to sterilise and/or monitor.
  • a fibreoptic endoscope comprising a flexible shaft, one or more instrumentation conduits that locates with the flexible shaft so as to form a combined assembly and a disposable sheath suitable for attachment to a distal end of the combined assembly.
  • the disposable sheath comprises an end cap and a flexible sheath.
  • the end cap comprises a substantially circular cross section.
  • the end cap comprises a substantially crescent shaped cross section.
  • the end cap further comprises one or more exit apertures so that when the end cap is attached to the combined assembly the exit apertures locates with a distal ends of the one or more instrumentation conduits.
  • the end cap further comprises a lens cover that provides a transparent physical barrier for the distal end of the combined assembly.
  • the end cap comprises one or more sockets suitable for receiving the one or more instrumentation conduits.
  • the flexible sheath comprises a polyurethane material, for example Tactylon®.
  • the flexible shaft comprises one or more channels located on an outer surface of the shaft and extending longitudinally along the length of the shaft and at least one internal shaft conduit.
  • the flexible shaft comprises a standard fibreoptic endoscope.
  • a plurality of fibreoptic image transmitting illumination fibres and a lens are housed within the internal conduit.
  • the one or more instrumentation conduits comprises an off axis instrument entrance conduit.
  • the one or more instrumentation conduits comprises a cylindrical tube suitable for locating within the one or more channels of the flexible shaft so that the combined assembly has a substantially circular cross section.
  • the one or more instrumentation conduits comprises a flexible body having a substantially crescent shaped cross-section so that the combined assembly has a substantially circular cross section.
  • a method of assembling a fibreoptic endoscope comprising the steps of: 1) Locating one or more instrumentation conduits with a flexible shaft so as to form a combined assembly; 2) Attaching a disposable sheath to a distal end of the combined assembly; and 3) Expanding the disposable sheath so as to provide the combined assembly with a physical barrier.
  • Figure 1 presents a schematic representation of a standard fibreoptic endoscope as described in the prior art
  • Figure 2 presents an exploded view of a fibreoptic endoscope in accordance with an aspect of the present invention
  • Figure 3 presents a schematic representation of the fibreoptic endoscope of Figure 2
  • Figure 4 presents a schematic representation of the fibreoptic endoscope of Figure 2 in conjunction with a standard fibreoptic endoscope adapter
  • Figure 5 presents an alternative embodiment of the fibreoptic endoscope suitable for retro fitting with the standard fibreoptic endoscope presented in Figure 1.
  • the fibreoptic endoscope 6 comprises a flexible shaft 7, an instrumentation tube 8 and a disposable sheath 9.
  • the flexible shaft 7 comprises a shaft conduit 10 that extends internally along its length and which is employed to house a plurality of flexible fibre optic image transmitting illumination fibres 11. At the distal end of the shaft conduit 10 is located a lens 12 employed to focus the light provided by the illumination fibres 11.
  • the flexible shaft 7 further comprises a channel 13 located on its outer surface and extending longitudinally along its length.
  • the channel is suitable for receiving the instrumentation tube 8 that is of a substantially circular cross section.
  • the instrumentation tube 8 comprises an instrument entrance conduit 14, located off axis, and an exit aperture 15 at the distal end of the hollow tube 8.
  • the instrumentation tube 8 is of sufficient rigidity so as to prevent its inward collapse. Therefore, the instrumentation tube 8 provides an isolated passage for surgical instruments to be passed via the entrance conduit 14 to the exit aperture 15.
  • the disposable sheath 9 comprises a solid end cap 16 which contains a translucent perspex (or similar material) lens cover 17, an aperture 18 and a flexible sheath 19.
  • the flexible sheath 19 is attached to the solid end cap 16 and comprises a latex-free polyurethane material (for example Tactylon®) and is normally stored in a rolled up position.
  • the solid end cap 1 is cresent shaped rather than circular in cross section.
  • the fibreoptic endoscope 6 is assembled by locating the instrumentation tube 8 within the channel 13. When so located the combination of the instrumentation tube 8 and the flexible shaft 7 provide an assembly that exhibits a substantially circular cross section, as shown in Figure 3.
  • the solid end cap 16 is attached to the distal end of the assembly so that the lens cover 17 protects the lens 12 while the aperture 18 locates in front of the exit aperture 15 of the hollow tube 8.
  • the solid end cap 16 fits tightly over the distal end of the combined hollow tube 8 and flexible shaft 7 assembly so that it does not become displaced during any subsequent medical procedure. Thereafter, the flexible sheath 19 is unrolled such that it covers the length of the combined hollow tube 8 and the flexible shaft 7 assembly.
  • the fibreoptic endoscope 6 is simply required to be connected at its proximal end to a standard fibreoptic endoscope adapter 20, as shown in Figure 4. Therefore, with the present design the entrance conduit 21 of the adapter 22 is rendered redundant .
  • instrumentation tube 8 is further secured to the flexible shaft 7 by temporary fixing means (not shown) .
  • the temporary fixing means comprise either ties or adhesive tape.
  • instrumentation tube 8 is further secured by fixing it to the solid end cap 16. This can be achieved by employing an adhesive, tape or by forming a threaded end on the hollow tube 8 suitable for screwing into a threaded socket formed on the inside surface of the solid end cap 16.
  • FIG 5 presents a further alternative embodiment of the fibreoptic endoscope 22 suitable for retro fitting with the fibreoptic endoscope 1 presented in Figure 1.
  • the instrumentation tube 8 comprises a crescent shaped flexible body 23 that is employed to locate around the fibreoptic endoscope 1, as shown.
  • a disposable sheath 9 is then connected to the distel end of the device as described above so that when the flexible sheath is unrolled there is provided a physical barrier for the instrumentation tube 8 and flexible fibreoptic endoscope 1 assembly.
  • the fibreoptic endoscope 6 comprises two or more instrumentation tubes to allow additional surgical instruments to be passed along the length of the device.
  • the employment of the flexible sheath 19 provides the flexible fibreoptic endoscopes 6 with a physical barrier so as to minimise the contact of the device with human tissue and so reducing the opportunity of contamination by bacterial endospores, prions and the like.
  • the disposable sheath 9 and the instrumentation tube 8 can be removed and disposed of, as appropriate.
  • a new uncontaminated disposable sheaths 9 and instrumentation tube 8 can then be employed.
  • the entrance conduit 14 the sterilisation requirements on the adapter 20 are also reduced.
  • the fibreoptic endoscope exhibits significant advantages over those systems described in the prior art.
  • the incorporation of the disposable sheath and the instrumentation tube provide a cheap and simple way of significantly reducing the sterilisation requirements on these devices.
  • the employment of the crescent shaped flexible body allows the device to be retro fitted with existing fibreoptic endoscopes. As the opportunity of contact with human tissue is significantly reduced the chances of cross contamination between patients on which the endoscope is employed are similarly reduced.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biomedical Technology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biophysics (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Endoscopes (AREA)

Abstract

Endoscope souple à fibres optiques adapté pour des procédures médicales. Ledit endoscope comporte une tige souple associée à un conduit jetable pour instruments, et une chambre d'éclairage à fibres optiques qui s'étend sur la longueur de l'endoscope. Une gaine jetable est attachée à une extrémité distale de l'endoscope. La gaine jetable comporte une fenêtre translucide destinée à permettre l'éclairage requis et une ouverture pour permettre le passage d'un ou plusieurs instruments médicaux. La combinaison du conduit jetable pour instruments et de la gaine contribue à réduire de manière significative le risque d'infection du patient et d'intercontamination.
PCT/GB2004/003317 2003-08-09 2004-08-02 Endoscope souple a fibres optiques Ceased WO2005016133A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0318740.8 2003-08-09
GB0318740A GB0318740D0 (en) 2003-08-09 2003-08-09 Flexible fibreoptic endoscope

Publications (1)

Publication Number Publication Date
WO2005016133A1 true WO2005016133A1 (fr) 2005-02-24

Family

ID=27839945

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2004/003317 Ceased WO2005016133A1 (fr) 2003-08-09 2004-08-02 Endoscope souple a fibres optiques

Country Status (2)

Country Link
GB (1) GB0318740D0 (fr)
WO (1) WO2005016133A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7976501B2 (en) 2007-12-07 2011-07-12 Ethicon Endo-Surgery, Inc. Trocar seal with reduced contact area
US7981092B2 (en) 2008-05-08 2011-07-19 Ethicon Endo-Surgery, Inc. Vibratory trocar
US8100929B2 (en) 2007-06-29 2012-01-24 Ethicon Endo-Surgery, Inc. Duckbill seal with fluid drainage feature
US8273060B2 (en) 2008-04-28 2012-09-25 Ethicon Endo-Surgery, Inc. Fluid removal in a surgical access device
WO2013101994A1 (fr) * 2011-12-29 2013-07-04 Cook Medical Technologies Llc Cathéter de visualisation à encombrement optimisé
US8568362B2 (en) 2008-04-28 2013-10-29 Ethicon Endo-Surgery, Inc. Surgical access device with sorbents
US8579807B2 (en) 2008-04-28 2013-11-12 Ethicon Endo-Surgery, Inc. Absorbing fluids in a surgical access device
US8636686B2 (en) 2008-04-28 2014-01-28 Ethicon Endo-Surgery, Inc. Surgical access device
USD700326S1 (en) 2008-04-28 2014-02-25 Ethicon Endo-Surgery, Inc. Trocar housing
US8690831B2 (en) 2008-04-25 2014-04-08 Ethicon Endo-Surgery, Inc. Gas jet fluid removal in a trocar
US8870747B2 (en) 2008-04-28 2014-10-28 Ethicon Endo-Surgery, Inc. Scraping fluid removal in a surgical access device
US9307893B2 (en) 2011-12-29 2016-04-12 Cook Medical Technologies Llc Space-optimized visualization catheter with camera train holder in a catheter with off-centered lumens
US9358041B2 (en) 2008-04-28 2016-06-07 Ethicon Endo-Surgery, Llc Wicking fluid management in a surgical access device
US9668643B2 (en) 2011-12-29 2017-06-06 Cook Medical Technologies Llc Space-optimized visualization catheter with oblong shape
US10244927B2 (en) 2011-12-29 2019-04-02 Cook Medical Technologies Llc Space-optimized visualization catheter with camera train holder
US11235111B2 (en) 2008-04-28 2022-02-01 Ethicon Llc Surgical access device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646722A (en) * 1984-12-10 1987-03-03 Opielab, Inc. Protective endoscope sheath and method of installing same
US5489256A (en) * 1992-09-01 1996-02-06 Adair; Edwin L. Sterilizable endoscope with separable disposable tube assembly
US20020013511A1 (en) * 1999-01-21 2002-01-31 Robert Ailinger Apparatus and method for forming thin-walled elastic components from an elastomeric material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646722A (en) * 1984-12-10 1987-03-03 Opielab, Inc. Protective endoscope sheath and method of installing same
US5489256A (en) * 1992-09-01 1996-02-06 Adair; Edwin L. Sterilizable endoscope with separable disposable tube assembly
US20020013511A1 (en) * 1999-01-21 2002-01-31 Robert Ailinger Apparatus and method for forming thin-walled elastic components from an elastomeric material

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8771307B2 (en) 2007-06-29 2014-07-08 Ethicon Endo-Surgery, Inc. Duckbill seal with fluid drainage feature
US8100929B2 (en) 2007-06-29 2012-01-24 Ethicon Endo-Surgery, Inc. Duckbill seal with fluid drainage feature
US7976501B2 (en) 2007-12-07 2011-07-12 Ethicon Endo-Surgery, Inc. Trocar seal with reduced contact area
US8672890B2 (en) 2007-12-07 2014-03-18 Ethicon Endo-Surgery, Inc. Trocar seal with reduced contact area
US8690831B2 (en) 2008-04-25 2014-04-08 Ethicon Endo-Surgery, Inc. Gas jet fluid removal in a trocar
US8568362B2 (en) 2008-04-28 2013-10-29 Ethicon Endo-Surgery, Inc. Surgical access device with sorbents
USD735852S1 (en) 2008-04-28 2015-08-04 Ethicon Endo-Surgery, Inc. Fluid remover
US8636686B2 (en) 2008-04-28 2014-01-28 Ethicon Endo-Surgery, Inc. Surgical access device
USD700326S1 (en) 2008-04-28 2014-02-25 Ethicon Endo-Surgery, Inc. Trocar housing
US11235111B2 (en) 2008-04-28 2022-02-01 Ethicon Llc Surgical access device
US8273060B2 (en) 2008-04-28 2012-09-25 Ethicon Endo-Surgery, Inc. Fluid removal in a surgical access device
US9827383B2 (en) 2008-04-28 2017-11-28 Ethicon Llc Surgical access device
US8870747B2 (en) 2008-04-28 2014-10-28 Ethicon Endo-Surgery, Inc. Scraping fluid removal in a surgical access device
US9033929B2 (en) 2008-04-28 2015-05-19 Ethicon Endo-Surgery, Inc. Fluid removal in a surgical access device
US8579807B2 (en) 2008-04-28 2013-11-12 Ethicon Endo-Surgery, Inc. Absorbing fluids in a surgical access device
USD736926S1 (en) 2008-04-28 2015-08-18 Ethicon Endo-Sugery, Inc. Trocar housing
US9358041B2 (en) 2008-04-28 2016-06-07 Ethicon Endo-Surgery, Llc Wicking fluid management in a surgical access device
US7981092B2 (en) 2008-05-08 2011-07-19 Ethicon Endo-Surgery, Inc. Vibratory trocar
US9307893B2 (en) 2011-12-29 2016-04-12 Cook Medical Technologies Llc Space-optimized visualization catheter with camera train holder in a catheter with off-centered lumens
US9668643B2 (en) 2011-12-29 2017-06-06 Cook Medical Technologies Llc Space-optimized visualization catheter with oblong shape
US10244927B2 (en) 2011-12-29 2019-04-02 Cook Medical Technologies Llc Space-optimized visualization catheter with camera train holder
WO2013101994A1 (fr) * 2011-12-29 2013-07-04 Cook Medical Technologies Llc Cathéter de visualisation à encombrement optimisé

Also Published As

Publication number Publication date
GB0318740D0 (en) 2003-09-10

Similar Documents

Publication Publication Date Title
WO2005016133A1 (fr) Endoscope souple a fibres optiques
US5496259A (en) Sterile protective sheath and drape for video laparoscope and method of use
EP0813384B1 (fr) Endoscope sterilisable a ensemble auxiliaire separable
EP0456761B1 (fr) Endoscope video rigide comportant une gaine sterilisable par la chaleur
US4646722A (en) Protective endoscope sheath and method of installing same
US5702348A (en) Disposable endoscopic sheath support and positioning assembly
USRE33854E (en) sterilizable sheathpe with .[.heat.].
US5704892A (en) Endoscope with reusable core and disposable sheath with passageways
US5402768A (en) Endoscope with reusable core and disposable sheath with passageways
US4869238A (en) Endoscope for use with a disposable sheath
US5168863A (en) Sterile endoscopic system
US4809678A (en) Endoscope for preventing patient contamination
JP5702737B2 (ja) 画像形成システムで使用する使い捨て式シース
EP0520743B1 (fr) Enveloppe pour un endoscope
USRE34110E (en) Endoscope for use with a disposable sheath
US5591119A (en) Sterile surgical coupler and drape
US5779625A (en) Endoscope system including endoscope and protection cover
ES2336774T3 (es) Endoscopio en miniatura con sistema de formacion de imagenes por fibra optica.
ES2958856T3 (es) Endoscopio
US8944994B2 (en) Device for sterilization check
US20230398245A1 (en) Improved medical tube
JP2013172843A (ja) 内視鏡
EP1989991A1 (fr) Dispositif de protection pour appareil endoscopique
JPH0410806B2 (fr)
JPH0584220A (ja) 内視鏡

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase