WO2003077735A1 - Dispositif permettant un deplacement le long d'un passage, accompagne d'un deplacement progressif d'une chambre gonflable annulaire - Google Patents

Dispositif permettant un deplacement le long d'un passage, accompagne d'un deplacement progressif d'une chambre gonflable annulaire Download PDF

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Publication number
WO2003077735A1
WO2003077735A1 PCT/CA2002/000358 CA0200358W WO03077735A1 WO 2003077735 A1 WO2003077735 A1 WO 2003077735A1 CA 0200358 W CA0200358 W CA 0200358W WO 03077735 A1 WO03077735 A1 WO 03077735A1
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WO
WIPO (PCT)
Prior art keywords
sheath
region
tool
annular
inflatable
Prior art date
Application number
PCT/CA2002/000358
Other languages
English (en)
Inventor
Leonard Kelly
Original Assignee
KELLY, Charlotte, Margaret
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 KELLY, Charlotte, Margaret filed Critical KELLY, Charlotte, Margaret
Priority to PCT/CA2002/000358 priority Critical patent/WO2003077735A1/fr
Priority to AU2002242532A priority patent/AU2002242532A1/en
Publication of WO2003077735A1 publication Critical patent/WO2003077735A1/fr

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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
    • A61B1/00147—Holding or positioning arrangements
    • A61B1/00151—Holding or positioning arrangements using everted tubes
    • 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
    • A61B1/00148—Holding or positioning arrangements using anchoring means
    • 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
    • A61B1/31—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 for the rectum, e.g. proctoscopes, sigmoidoscopes, colonoscopes

Definitions

  • This invention relates to devices for movement along passages.
  • passages e.g. passages which require examination or certain treatments.
  • devices are made which are intended for use in medical procedures, i.e. , when the devices are for movement along passages of humans and animals.
  • such devices may include, for instance, a sound, a colonoscope, catheter or endoscope.
  • colonoscope procedures are performed under a light anaesthetic which includes an 25 amnesiac component. This results firstly in the patient being able to report pain during the procedure, when he feels it, while ideally not feeling the pain sensations afterwards. Secondly, it warns medical staff of impending difficulties.
  • the present invention seeks to provide a device for movement along a passage which lessens the above problems in use.
  • the device of the invention seeks to avoid injury to the patient while enabling completion of procedures in a safe and speedy manner and in a predictable time.
  • a device for movement 30 along a passage comprising: - an elongate tool having a major axis, distal and proximal end regions, and a sheath abutment element at the distal end region of the tool; an elongate inflatable sheath surrounding the tool, the sheath having an annular inflatable region disposed between the abutment element and the proximal end region of
  • annular extension region for the annular inflatable region
  • the annular extension region having a plurality of sequentially interconnected sheath parts extending from the inflatable region, the sheath parts being relatively oriented to face each, other to locate the annular extension region around the distal end region of the tool with the annular extension region movable forwardly together with the distal end region of .the tool; an annular inflation chamber defined between the inflatable region and the outer surface of the tool; and means for introducing pressurized fluid into the chamber to inflate the inflatable region of the sheath, when inside the passage, and to cause inflationary pressure then to act against the sheath abutment element to move the tool forwardly along the passage accompanied by sequential reorientation of the sheath parts and their sequential movement into, and lengthen, the inflatable region.
  • the device of the invention defined above When the device of the invention defined above is to be used within passages provided by inanimate matter, these passages would normally be expected to be provided with a rigid wall, e.g. in the case of metal or plastic pipes. In such a case, the radially outwards expansion of the inflatable region of the sheath would be constrained by the rigid wall and the sheath would have to expand axially, upon continued introduction of the pressurized fluid, so that the tool was moved along the passage. Where, however, the device is to be used upon living beings, particularly humans, then the sheath should have limited radial expansion, i.e., to a desired maximum.
  • the sheath may be formed from an inelastic material, such as an inelastic polymer, e.g.
  • the sheath may include a plurality of longitudinally inextensible fibers which are oriented in at least one particular direction for the purpose of limiting radial expansion .
  • the sheath should be designed so as not to apply undue pressure to the wall of the passage, e.g. a colon, but may apply sufficient pressure either merely to engage the passage wall or with a small acceptable radial enlargement of the passage.
  • the sheath will grip the passage wall and then expand progressively along its length while, simultaneously, the tool, e.g. a colonoscope, is moved forwardly by the inflationary pressure.
  • the limit to radial expansion of the sheath thus may help to lessen any discomfort and anxiety of a patient. Sudden increases and decreases of inflationary pressure at localized regions of the passage are avoided, such as must be provided by devices having inflatable bags inflated and deflated in specified order to move a tool incrementally along the passage.
  • a structure of the above invention has, instead, the annular extension region which moves forwardly along the passage together with and at the same rate as the tool.
  • the sheath parts of the extension region are deployed from the distal end of the tool.
  • the annular extension region is connected to the inflatable region by a distal end fold of the sheath.
  • the distal end fold preferably engages the sheath abutment element and under inflation pressure, the sheath everses by the distal end fold rolling forwardly under inflation forces acting against the abutment element thereby urging the tool forwardly.
  • the annular extension region progressively moves through the distal end fold, as it rolls forwardly, to progressively become part of the axially lengthening inflatable region of the sheath.
  • the annular extension region in this arrangement may be supported radially inwards upon the tool, and may be contained within a cylindrical housing secured around the tool.
  • the sheath has a minimum radius of collapse whereby the annular extension region is disposed at a larger diameter than a region of the tool which is located radially within the extension region.
  • means is required to maintain the extension region spaced by an annular gap from that region of the tool. It is convenient if this spacing-maintaining means comprises an axially extending part of the abutment element and which is itself spaced from the above region of the tool. In a practical structure, this part of the abutment element contains and supports the extension region to restrain it from radial outward expansion under inflation pressure, and until each sheath part of the extension region moves into and becomes part of the inflatable region of the sheath as forward movement proceeds.
  • the extension region is thus located forwardly of the inflatable region of the sheath with a radially extending interconnecting sheath portion located intermediate the inflatable region and the extension region.
  • the sheath parts move sequentially radially outwardly into the inflatable region.
  • inflation pressure acts, not only to inflate the inflatable region, but also directly through an annular gap between the extension region of the sheath and the tool to be applied directly against the abutment element to move the tool forwardly.
  • inflation forces do not act against the abutment element through the intermediary of a distal end fold as in the arrangement of the invention previously discussed. Hence, creation of any friction forces which may be caused by sliding of such a fold against the abutment element during sheath eversion is avoided.
  • the annular extension region may have its sheath parts provided by a plurality of sequentially interconnected annular folded portions positioned around the distal end region of the tool.
  • the folded trartions are caused to sequentially unfold as inflationary pressure acts against the sheath abutment element so as to move the folded portions into and progressively lengthen the inflated inflatable region.
  • the annular extension region is crumpled to form the sheath parts. Crumpling is progressively removed as inflationary pressure acts against the sheath abutment element to move the sheath parts into the inflated inflatable region.
  • the extension region is provided by annular folded portions, these are preferably positioned radially outside of, and are superimposed upon, one another.
  • the folded portions In the above arrangement employing a distal end fold and where the extension region has annular folded portions superposed upon one another, it is preferable for the folded portions to unfold sequentially, during eversion, radially inwardly from the radially outermost folded region. Hence, no slippage of the sheath upon the tool occurs during unfolding and unnecessary frictional resistance to movement of the tool is avoided.
  • a device for movement along a passage comprising :- an elongate tool having a major axis, distal and proximal end regions, and an inflatable sheath abutment element at the distal end region of the tool; an elongate inflatable sheath surrounding the tool, the sheath having an annular inflatable region disposed between the abutment element and the proximal end region of the tool and an annular extension region interconnected with the annular inflatable region; an annular inflation chamber defined within the annular inflatable region of the sheath; and means for introducing pressurized fluid both into the chamber to inflate the inflatable region of the sheath and the sheath abutment element, when inside the passage, and, with the abutment element inflated, to cause inflationary pressure to act against the sheath abutment element to draw the tool forwardly along the passage accompanied by progressive movement of the annular extension region of the sheath into the inflated region so as to increase the length of
  • the sheath and the abutment element are preferably both inflatable by limited amounts, which conveniently are to. approximately equal outside diameters.
  • both the sheath and the abutment element may be deflated for easy removal.
  • the inflatable sheath abutment element is of a flexible nature and may deform somewhat according to change in shape of the passage. This provides a cushioning effect when contacting the wall of the passage, e.g. colon, so as to comply, at least to a degree, to the shape of the wall, thereby reducing resistance to forward movement along the passage while minimizing pain such as may be caused by colon distortion.
  • Figure .1 is a side elevational view of a device for medical use, and according to a first embodiment
  • Figures 2 and 3 are cross-sectional views in side elevation, to a larger scale than Figure 1, and showing two stages in operation of the device of the first embodiment;
  • Figure 4 is a cross-sectional view, in side elevation, and to a much larger scale, of part of a device according to a second embodiment
  • Figure 5 is a cross-sectional view in side elevation of a device for medical use according to a third embodiment.
  • Figure 6 is a view similar to Figure 3 showing one stage in use of the device of the third embodiment.
  • a device for movement along a passage comprises a colonoscopy device 10.
  • This device has a flexible elongate tool in the form of a colonoscope 12 and an elongate, inflatable sheath 14.
  • the sheath 14 has an annular inflatable region 16 surrounding the colonoscope 12.
  • the annular inflatable region is disposed axially between a proximal end region 22 ( Figure 2) of the device and a sheath abutment element 18 disposed at a distal end region 20 of the device.
  • the inflatable region 16 is connected to an annular extension region 24 by a distal end fold 26 of the sheath so as to render the sheath eversible.
  • the extension region 24 comprises a plurality of sequentially interconnected sheath parts extending from the inflatable region 16. These sheath parts are in the form of axially extending folded portions 28 positioned radially outside of, and superposed upon, one another. The folded portions 28 are carried upon the surface of the colonoscope 12.
  • the sheath is necessarily of a material which is compatible with the wellbeing of a patient, e.g. a polymeric material, such as p.olyurethane film of suitable thickness for its purposes. This material is inelastic and is transparent.
  • the sheath may have a thickness of 5 mil or less (e.g. down to 1 mil) is envisaged.
  • the non-inflated sheath occupies a very small space ( Figures 1 and 2) .
  • the material of the sheath of 2 mil thickness having a 1 inch maximum inflatable diameter and 36 inches long would occupy approximately 0.216 cubic inches.
  • the extension region 24 is contained within a cylindrical housing 30 surrounding the colonoscope 12 adjacent the abutment element 18.
  • the housing 30 has an opening 32 at its distal end for release of the folded portions 28.
  • the other end of the housing 30 is secured by an end wall 34 to the colonoscope 12.
  • the housing is flexible and moveable in conjunction with the colonoscope.
  • the inflatable region 16 of the sheath 14 is sealingly secured at its proximal end at a position 35 to a radially extending wall 36 of a large diameter housing 38 of a smooth surfaced and rigid structure 40.
  • This structure also includes a smaller diameter rectal insert 42 of cylindrical shape which extends towards the distal end of, but is radially spaced from, the colonoscope 12.
  • the sleeve has a pressure seal 46 sealingly engaging the colonoscope 12 while allowing for axial movement of the colonoscope.
  • the housing 38 has an inlet 48 for pressurized fluid for inflating the sheath 14.
  • the pressurized fluid may be any suitable for the particular purpose in use of the device, e.g. air, water or an oil which is harmless to the patient should a leakage occur.
  • the abutment element 18 is itself inflatable and is formed by a non-elastic transparent material wall which may also be polyurethane of minimal thickness.
  • the abutment element 18 is sealingly attached to the outer wall of the colonoscope 12 at upstream and downstream positions 50 and 52.
  • the radially innermost folded portion 28 of the sheath also is sealingly attached to the colonoscope at position 52.
  • the abutment element 18 is inflatable simultaneously with the sheath 14 through a passage 53 defined between the cylindrical housing 30 and the colonoscope 12.
  • the colonoscope 12 is in a withdrawn position with its distal end located substantially completely within the rectal insert 42 and with the sheath 14 and the abutment element 18 collapsed and also within the rectal insert.
  • the rectal insert is inserted into the rectum 54 of a patient and expands the walls of the rectum, as shown in Figure 2, to the diameter of the insert (approximately 1 inch).
  • Pressurized fluid is then passed through the inlet 48.
  • This fluid flows inside the annular inflatable region 16 of the sheath, i.e. into an inflation chamber 56 ( Figure 3) defined between the inflatable region 16 and the surface of the colonoscope 12.
  • Pressurized fluid also flows along the passage 53 to inflate the abutment element 18.
  • the distal end fold 26 is moved by the inflation pressure in the distal direction to contact the abutment element 18 which by now has been inflated into contact with the rectal insert 42.
  • the distal end fold then forces the abutment element 18 into the colon 55 and away from the rectal insert 42, the abutment element 18 drawing the colonoscope 12 with it.
  • the leading folded portion 28 of the inflating sheath then emerges from the housing 30, followed in turn by the other folded portions, and each inflates to its maximum diameter of approximatelv 1 inch to srip and slightly expand the colon wall, while avoiding undue stress to the patient ( Figure 3).
  • the distal end fold 26 then continues to move downstream under the inflation pressure so as to push the abutment element 18 progressively in front
  • the colonoscope is pulled along the colon by the abutment element.
  • the inflated inflatable region of the sheath 16 progressively increases in length along the colon as the .folded portions 28 unfold sequentially, from the radially outermost folded portion.
  • the material of the folded portions 28 passes through the distal end fold to become part of the inflated inflatable region 16.
  • the distal end fold 26 thus slides upon the abutment element 18 as it moves it and the colon along the passage.
  • the distal end region 20 of the colonoscope is held away from the colon wall by the sheath 14 so that it cannot contact the colon wall to cause injury or discomfort to the patient.
  • the inflatable region 16 As the inflatable region 16 is being progressively lengthened, it continuously increases its length of contact with the colon wall with a rolling action by sheath material passing through the distal end fold 26. Consequently, there is no sliding action upon the colon wall, the colon wall being progressively expanded slightly as sheath movement continues. Thus, sliding of the sheath along the colon wall, together with rubbing action, is avoided, thereby reducing pain and discomfort to the patient.
  • the results achieved with the inflation chamber being defined between the sheath 14 and the colonoscope surface are the results achieved with the inflation chamber being defined between the sheath 14 and the colonoscope surface.
  • the sheath does not have an inner wall for providing material to lengthen the inflatable region of the sheath and which would frictionally slidably engage the colonoscope 12 as it causes it to move forwards at the same speed as that of the distal end fold 26.
  • Such frictional engagement would render the movement of the device along the colon unduly difficult when it is realized that the frictional sliding engagement of any inner wall of the sheath upon the colonoscope would be increased by the inflation pressure upon the wall.
  • annular extension region 24 moves distally together with the colonoscope 12 as the folded portions are being unfolded. This allows the device to move along the colon with maximized ease and to successfully negotiate any turns and curved regions of the colon.
  • the device 10 of this embodiment may be traversable to the caecum with minimal discomfort and pain to the patient.
  • the inflation medium may, for instance, be air or water or even an oil suitable for this particular purpose. Where oil is used., it would provide a welcome lubricant to facilitate movement of the colonoscope, the unfolding of the folded portions 28 of the sheath and the sliding of the distal end fold 26 upon the abutment 18.
  • the inflatable abutment element 18 has multiple functions including, in addition to the above, holding the sheath in position behind it during inflation, while preventing the sheath from expanding ahead of it. Also the element 18 increases ease and speed of operation while reducing resistance to forward movement along the passage while minimizing pain and discomfort.
  • This element is inflatable to its maximum diameter approximately equal to that of the sheath 14. While the abutment element 18 assists in increasing the diameter of the colon, as it moves along it, it has a flexibility which enables the element to be deformed to a certain degree by the surface shape of the colon wall.
  • any changes to this shape as the abutment element moves along the colon may be accommodated by some corresponding change in shape of the abutment element. Painful contact with certain regions of the colon is thus minimized.
  • the flexibility of the abutment element also assists it in traversing corners or turns in the colon. Potentially maximizing speed of operation serves to minimize stress both to the patient and to the medical staff, while making it possible to reduce, perhaps significantly, the average cost of colonoscopy procedures and maximizing efficiency in use of medical staff.
  • the abutment element may be coated with a friction reducing material, e.g. it may be coated with polytetrafluoroethylene ("Teflon").
  • Teflon polytetrafluoroethylene
  • Such a low friction material will also reduce frictional resistance to the movement of the distal end fold 26 upon the abutment element 18. It is estimated that a modest 6 pounds per square inch inflation pressure will create a forward thrust of 3 pounds force upon the abutment element which is sufficient to draw the colonoscope 12 through the colon.
  • the sheath 14 and abutment element 18 are both deflated down onto the surface of the colonoscope 12 to allow for ease of withdrawal of the device while further minimizing discomfort or damage to the patient.
  • normal colonoscopic operation i.e. video and instrument operation
  • video and instrument operation may be fully operational with the above device.
  • a colonoscope device 61 is basically of the same construction as the device of the first embodiment and like reference numbers are used for similar parts.
  • the structure differs from that of the first embodiment in that the sheath 14 has an annular extension region 63 which is scrunched up, i.e. crumpled, in the axial direction so as to axially shorten the sheath material in the extension region whereby it lies within the housing 30.
  • the crumpling action forms sequentially interconnected sheath parts 65 which are relatively oriented to face each other within the housing 30.
  • These sheath parts 65 are of random size, shape and direction such as is provided by a crumpling action.
  • the crumpled structure is shown in Figure 4, more open, for clarity, than would be expected in practice.
  • fluid pressure acts against the distal end fold 26, as in the first embodiment, to cause the fold to roll upon the inflated abutment element 18 and urge the colonoscope 12 along colon 55.
  • the sheath parts 65 are moved sequentially out of the housing to become relatively reoriented by uncrimpling of sheath material, the sheath parts then moving through the distal end field to become parts of the lengthening inflated inflatable region 16.
  • a colonoscopic device 60 comprises a rigid structure 62 comprising a rectal insert 64.
  • the insert 64 has an outer cylindrical surface and is received within the proximal end section of an inflatable region 66 of a sheath 68.
  • the sheath 68 is sealingly secured to the outer surface of the insert 64.
  • the sheath has a annular extension region 70 comprising sequentially interconnected sheath parts in the form of a plurality of axially extending and overlying folded portions 72.
  • the material of the sheath is similar to that of the sheath of the first embodiment and, while being inelastic, the folded portions 72 lie at a minimum diameter which is greater than the diameter of the colonoscope 74.
  • Means is provided for maintaining the folded portions 72 spaced by an annular gap ⁇
  • This space-maintaining means comprises an axially extending cylindrical part 78 of an abutment element 80 which holds the folded regions coaxially spaced around the colonoscope 74.
  • the cyhndrical part 78 extends rearwardly of a head 82 of the abutment element, the head extending radially inwardly to contact the surface of the colonoscope 74.
  • the head is secured to the colonoscope by a locking collar 84 and a pressure seal 86 is disposed between the head and the colonoscope.
  • the abutment element 80 may be approximately 7 centimetres in length and is of a flexible and pliable plastic so as to be able to follow the turns and negotiate corners of a colon.
  • the sheath may be coated with a low friction material, e.g. "Teflon".
  • the colonoscope 74 extends through a proximal end or handle 88 of the rigid structure 62 and is sealed therein by a pressure seal 90 which allows for axial movement of the colonoscope within the structure.
  • An inlet 92 is provided in the rigid structure for supplying a pressurized fluid into an inflation chamber 94 between the inflatable region
  • the device of the third embodiment has the advantages obtained in the first and second embodiments with regard to the inflation chamber being partly defined by the surface of the colonoscope.
  • the inflation chamber being partly defined by the surface of the colonoscope.
  • frictional resistance to movement of the colonoscope along a colon is minimized with the fluid directly contacting the colonoscope.
  • the inflatable region 66 of the sheath progressively increases in axial length along the colon while minimizing pain or discomfort to the patient.
  • the sheath of the third embodiment operates differently from that of the first and second embodiments to increase the length of the inflatable region.
  • the method of applying inflation pressure to the abutment element is different.
  • pressurized fluid is introduced into the chamber 94 through the inlet 92.
  • This fluid inflates the inflatable region 66 of the sheath to its maximum diameter so that it expands the colon 97 slightly.
  • Continued inflation pressure then acts against a downstream end surface 98 of the head 82 of the abutment element to urge the abutment element along the colon.
  • This pressure is applied through the gap 76 between the folded portions 72 and the colonoscope 74, the gap providing part of the chamber 94.
  • the inflation pressure is applied directly against the abutment element 18 and not through the medium of the sheath itself.
  • the structure therefore avoids the use of a distal end region of the sheath which moves relative to an abutment member during movement along the colon, and thus avoids any resulting frictional resistance to movement.
  • the folded portions 72 of the sheath are spaced axially from the inflatable region 66.
  • the inflatable region 66 of the sheath is increased in length by material from the folded portions. This increase in length is progressive and takes place by the sequential removal of the folded portions 72 from the abutment element 80, commencing with the radially innermost portion.
  • the annular extension region of the sheath does not have sequentially interconnected and axially extending overlying folded portions. Instead, in the modification the annular extension region is crumpled similar to the crumpled annular extension region of the second embodiment. This provides sequentially interconnected sheath parts of random size, shape and direction, these sheath parts being held within cylindrical part 78 of the abutment element. During movement of the colonoscope device along a colon, the sheath parts move sequentially through the interconnecting sheath portion 100 to become parts of the lengthening inflated inflatable region of the sheath.

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Abstract

La présente invention concerne un dispositif pour déplacer un outil le long d'un passage, notamment conçu pour être utilisé au cours d'opérations médicales. Selon un aspect, un outil, par exemple un coloscope, est entouré d'une gaine qui présente une région gonflable conçue pour s'engager dans la paroi du passage, par exemple un colon. Une région d'allongement annulaire de la gaine devient partie de la région gonflable gonflée, ce qui permet d'augmenter sa longueur lorsque la pression fluidique s'exerce contre une tête d'un outil pour tirer l'outil le long du passage. La région d'allongement annulaire présente des parties de gaine qui se font face par leur orientation relative, à cause d'un plissage de la région d'allongement, ou les parties de gaine sont assurées par des sections pliées. La région d'allongement se déplace en même temps que l'outil lorsque les parties de gaine se déplacent de manière séquentielle dans la région gonflable gonflée. Cette structure permet d'éviter l'utilisation d'une paroi interne de la gaine qui se déplacerait sur l'outil et viendrait en contact avec celui-ci lors de son utilisation, produisant une résistance au mouvement du dispositif le long du passage. Selon un autre aspect, après gonflage de la région gonflable de la gaine, une pression de gonflage s'exerce sur une tête gonflable portée à la région d'extrémité distale de l'outil afin de tirer l'outil le long du passage. Cette tête gonflable, en cas d'usage médical, peut réduire l'inconfort et peut être dégonflée afin d'être retirée aisément du dispositif.
PCT/CA2002/000358 2002-03-15 2002-03-15 Dispositif permettant un deplacement le long d'un passage, accompagne d'un deplacement progressif d'une chambre gonflable annulaire WO2003077735A1 (fr)

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PCT/CA2002/000358 WO2003077735A1 (fr) 2002-03-15 2002-03-15 Dispositif permettant un deplacement le long d'un passage, accompagne d'un deplacement progressif d'une chambre gonflable annulaire
AU2002242532A AU2002242532A1 (en) 2002-03-15 2002-03-15 A device for movement along a passage accompagnied by progressive movement of an annular inflatable chamber

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PCT/CA2002/000358 WO2003077735A1 (fr) 2002-03-15 2002-03-15 Dispositif permettant un deplacement le long d'un passage, accompagne d'un deplacement progressif d'une chambre gonflable annulaire

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
DE10353957A1 (de) * 2003-11-18 2005-06-23 Böttger, Hans-Christian, Dr. med. Vorrichtung zum Transport eines länglichen Instrumentes, insbesondere eines Endoskopes, in einen länglichen Hohlraum
WO2006085311A1 (fr) * 2005-02-14 2006-08-17 Stryker Gi Ltd. Endoscope a maniabilite amelioree
CN106235993A (zh) * 2004-02-09 2016-12-21 智能医疗系统有限公司 内窥镜组件

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US4148307A (en) * 1975-12-26 1979-04-10 Olympus Optical Company Limited Tubular medical instrument having a flexible sheath driven by a plurality of cuffs
US5259364A (en) * 1989-08-01 1993-11-09 Stm Medizintechnik Starnberg Gmbh Endoscope device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4148307A (en) * 1975-12-26 1979-04-10 Olympus Optical Company Limited Tubular medical instrument having a flexible sheath driven by a plurality of cuffs
US5259364A (en) * 1989-08-01 1993-11-09 Stm Medizintechnik Starnberg Gmbh Endoscope device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10353957A1 (de) * 2003-11-18 2005-06-23 Böttger, Hans-Christian, Dr. med. Vorrichtung zum Transport eines länglichen Instrumentes, insbesondere eines Endoskopes, in einen länglichen Hohlraum
CN106235993A (zh) * 2004-02-09 2016-12-21 智能医疗系统有限公司 内窥镜组件
WO2006085311A1 (fr) * 2005-02-14 2006-08-17 Stryker Gi Ltd. Endoscope a maniabilite amelioree

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