GB2130885A - Flexible distal end portion for endoscope - Google Patents

Flexible distal end portion for endoscope Download PDF

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Publication number
GB2130885A
GB2130885A GB8232673A GB8232673A GB2130885A GB 2130885 A GB2130885 A GB 2130885A GB 8232673 A GB8232673 A GB 8232673A GB 8232673 A GB8232673 A GB 8232673A GB 2130885 A GB2130885 A GB 2130885A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
end portion
distal end
elongate member
endoscope
thickness
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.)
Withdrawn
Application number
GB8232673A
Inventor
F A Coulston-Iles
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.)
ELVEN PRECISION Ltd
Original Assignee
* ELVEN PRECISION LIMITED
ELVEN PRECISION LIMITED
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

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00Instruments 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
    • A61B1/005Flexible endoscopes
    • A61B1/0051Flexible endoscopes with controlled bending of insertion part
    • A61B1/0055Constructional details of insertion parts, e.g. vertebral elements
    • A61B1/0056Constructional details of insertion parts, e.g. vertebral elements the insertion parts being asymmetric, e.g. for unilateral bending mechanisms

Abstract

A distal end portion for an endoscope, comprises an elongate member (3) integrally formed with discrete apertured members (2) extending transversely of and spaced along the elongate member such that the apertures define a cavity, extending longitudinally for receiving a light guide, the thickness of the elongate member and/or the distance between the discrete apertured members varying along the length of the end portion, such that, in use, the end portion may be flexed, the angle through which it may be flexed varying from the length thereof in dependence on the thickness and/or the distance between the discrete apertured members. <IMAGE>

Description

SPECIFICATION Improvements in or relating to flexible distal end portions for endoscopes This invention relates to flexible distal end portions for endoscopes, in particular for nephroscopes.

According to the present invention there is provided a distal end portion for an endoscope, the end portion comprising an elongate member integrally formed with a plurality of discrete apertured members extending transversely of and spaced along the elongate member such that the apertures define a cavity extending longitudinally of the elongate member for receiving a light guide, the thickness of the elongate member and/or the distance between the discrete apertured members varying along the length of the elongate member, the arrangement being such that, in use, the end portion may be flexed, the angle through which the distal end portion may be flexed varying along the length of the distal end portion in dependence on the thickness of the elongate member and/or the distance between the discrete apertured members.

Preferably, the thickness of the elongate member decreases toward the ends of the distal end portion to prevent undue flexing thereof.

Conveniently, a hole is formed through each discrete apertured member, the holes being aligned to provide a guide channel for a steering cable.

In a preferred embodiment, the distal end portion is formed integrally with an end cap for the endoscope and usually the distal end portion is made of a plastics material.

For a better understanding of the present invention and to show how the same may be put into effect, reference will now be made, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a longitudinal sectional view of a first flexible end portion in accordance with the invention; Figure 2 is an enlarged longitudinal sectional view of a distal end of the flexible end portion shown in Figure 1; Figure 3 shows the flexible end portion of Figures 1 and 2 connected via a length of flexible tubing to a main body (not shown) of a nephroscope and illustrates the operation of the end portion; Figure 4 is a longitudinal sectional view of a second flexible end portion in accordance with the invention; and Figure 5 is a longitudinal sectional view of a third flexible end portion in accordance with the invention.

Figure 1 is a longitudinal sectional view of a first flexible end portion in accordance with the invention. The flexible distal end portion comprises a tubular body 1 formed with a plurality of transversely extending slots so that the tubular body 1 has the form of a plurality of discrete apertured members in the form of ringshaped elements or vertebrae 2 connected by an elongate member or spine 3 extending along the length of the tubular body 1. A hole 4 is formed through each of the ring-shaped elements 2 to provide a guide channel 5 extending longitudinally of the tubular body 1 to accept a steering cable 6 (Figure 2). Preferably, the tubular body 1 is moulded in a plastics material.

In use, the distal end of the tubular body 1 is connected to a transparent end cap 7 and the proximal end is connected via a length of flexible tubing 8 (Figure 3) to the main body of the endoscope (not shown). Although not shown, light guides for example optical fibres, flushing and biopsy channels etc. run through the flexible tubing 8 and the tubular body 1 to the end cap 7, passages 9 being provided in the end cap 7 for connection to the flushing and biopsy channels.

The steering cable 6 is secured in a caple nipple 10 and a plastics sleeve 1 1 covers the tubular body 1. The plastics sleeve 11 is held in place by binding 12.

By use of steering controls in the main body (not shown) of the endoscope, the tension in the steering cable can be increased causing the distal end portion to flex about the spine 3 drawing the rings 2 together as shown in Figure 3. At maximum curvature, the outermost portions of the rings 2 abut.

Alteration of the depth and/or width of the slots will change the maximum degree of curvature obtainable for the distal end portion.

Thus, by altering the depth and/or width of the slots along the length of the tubular body 1 ,the angle through which the distal end portion can be flexed can be varied along its length. Moreover, the regions of the tubular body 1 where the spine 3 is thinnest, that is where the slots are deepest, will flex first. The arrangement of slots shown In Figure 1 will prevent undue flexing of the ends of the distal end portion.

Figures 4 and 5 show in longitudinal section two further embodiments of the invention wherein the end cap 7 is formed integrally with the tubular body 1. In the embodiment shown in Figure 5, a separate guide channel is not provided, the presence of light guides, flushing channels etc. in the tubular body 1 being relied on to align the steering cable 6.

Claims (10)

Claims
1. A distal end portion for an endoscope, the end portion comprising an elongate member integrally formed with a plurality of discrete apertured members extending transversely of and spaced along the elongate member such that the apertures define a cavity extending longitudinally of the elongate member for receiving a light guide, the thickness of the elongate member and/or the distance between the discrete apertured members varying along the length of the elongate member, the arrangement being such that, in use, the end portion may be flexed, the angle through which the distal end portion may be flexed varying along the length of the distal end portion in dependence on the thickness of the elongate member and/or the distance between the discrete apertured members.
2. A distal end portion according to claim 1, wherein the thickness of the elongate member decreases toward the ends of the distal end portion to prevent undue flexing thereof.
3. A distal end portion according to claims 1 or 2, wherein a hole is formed through each discrete apertured member, the holes being aligned to provide a guide channel for a steering cable.
4. A distal end portion according to claim 1, 2 or 3, wherein the distal end portion is formed integrally with an end cap for the endoscope.
5. A distal end portion according to claim 1, 2, 3 or 4, wherein the distal end portion is made of a plastics material.
6. A distal end portion for an endoscope substantially as hereinbefore described with reference to and as illustrated in Figures 1 to 3 of the accompanying drawings.
7. A distal end portion for an endoscope substantially as hereinbefore described with reference to and as illustrated in Figure 4 of the accompanying drawings.
8. A distal end portion for an endoscope substantially as hereinbefore described with reference to and as illustrated in Figure 5 of the accompanying drawings.
9. A nephroscope incorporating a distal end portion according to any one of the preceding claims.
10. Any novel feature or combination of features described herein.
GB8232673A 1982-11-16 1982-11-16 Flexible distal end portion for endoscope Withdrawn GB2130885A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8232673A GB2130885A (en) 1982-11-16 1982-11-16 Flexible distal end portion for endoscope

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8232673A GB2130885A (en) 1982-11-16 1982-11-16 Flexible distal end portion for endoscope

Publications (1)

Publication Number Publication Date
GB2130885A true true GB2130885A (en) 1984-06-13

Family

ID=10534291

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8232673A Withdrawn GB2130885A (en) 1982-11-16 1982-11-16 Flexible distal end portion for endoscope

Country Status (1)

Country Link
GB (1) GB2130885A (en)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0183585A2 (en) * 1984-11-02 1986-06-04 Warner-Lambert Technologies, Inc. Flexible plastic tube for endoscopes and the like
US4672680A (en) * 1984-06-19 1987-06-09 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Raster image manipulator
EP0247371A1 (en) * 1986-05-23 1987-12-02 Sarcem Sa Catheter guide
EP0254885A1 (en) * 1986-07-29 1988-02-03 Sarcem Sa Remote controlled catheter guide
WO1992003964A1 (en) * 1990-09-12 1992-03-19 Adair Edwin Lloyd Deflectable sheath for optical catheter
EP0521595A2 (en) * 1991-02-15 1993-01-07 Ingemar H. Lundquist Torquable catheter and method
EP0543539A1 (en) * 1991-11-18 1993-05-26 Intelliwire, Inc. Steerable flexible elongate device and method for use therewith
EP0552429A1 (en) * 1992-01-18 1993-07-28 Richard Wolf GmbH Endoscope with a steerable distal end portion
US5304131A (en) * 1991-07-15 1994-04-19 Paskar Larry D Catheter
US5318526A (en) * 1992-09-29 1994-06-07 Neuro Navigational Corporation Flexible endoscope with hypotube activating wire support
US5562619A (en) 1993-08-19 1996-10-08 Boston Scientific Corporation Deflectable catheter
DE19534112A1 (en) * 1995-09-14 1997-03-20 Wolf Gmbh Richard Endoscopic instrument with steerable distal end
WO1999044489A1 (en) * 1998-03-06 1999-09-10 Forschungszentrum Karlsruhe Gmbh Pivotable part at the distal end of an instrument for endoscopic use
US6485411B1 (en) 2000-04-12 2002-11-26 Circon Corporation Endoscope shaft with superelastic alloy spiral frame and braid
US6749560B1 (en) 1999-10-26 2004-06-15 Circon Corporation Endoscope shaft with slotted tube
US6780151B2 (en) 1999-10-26 2004-08-24 Acmi Corporation Flexible ureteropyeloscope
GB2456165A (en) * 2008-01-04 2009-07-08 Gyrus Medical Ltd Slotted, flexible shaft for an endoscopic instrument
WO2010030508A1 (en) * 2008-09-10 2010-03-18 Boston Scientific Scimed, Inc. Medical devices and tapered tubular members for use in medical devices
DE102010034345A1 (en) * 2010-08-14 2012-02-16 Richard Wolf Gmbh Endoscopic instrument comprises handle and shaft which is provided with bent section, where tubular support body is arranged in shaft, and tubular support body is divided in segments

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672680A (en) * 1984-06-19 1987-06-09 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Raster image manipulator
EP0183585A2 (en) * 1984-11-02 1986-06-04 Warner-Lambert Technologies, Inc. Flexible plastic tube for endoscopes and the like
EP0183585A3 (en) * 1984-11-02 1988-06-01 Warner-Lambert Technologies, Inc. Flexible plastic tube for endoscopes and the like
EP0247371A1 (en) * 1986-05-23 1987-12-02 Sarcem Sa Catheter guide
US4798598A (en) * 1986-05-23 1989-01-17 Sarcem S.A. Guide for a catheter
EP0254885A1 (en) * 1986-07-29 1988-02-03 Sarcem Sa Remote controlled catheter guide
US4787399A (en) * 1986-07-29 1988-11-29 Sarcem S.A. Remote controlled catheter guide
WO1992003964A1 (en) * 1990-09-12 1992-03-19 Adair Edwin Lloyd Deflectable sheath for optical catheter
US5125395A (en) * 1990-09-12 1992-06-30 Adair Edwin Lloyd Deflectable sheath for optical catheter
EP0521595A2 (en) * 1991-02-15 1993-01-07 Ingemar H. Lundquist Torquable catheter and method
EP0521595A3 (en) * 1991-02-15 1993-03-03 Ingemar H. Lundquist Torquable catheter and method
US5304131A (en) * 1991-07-15 1994-04-19 Paskar Larry D Catheter
EP0543539A1 (en) * 1991-11-18 1993-05-26 Intelliwire, Inc. Steerable flexible elongate device and method for use therewith
US5520644A (en) * 1991-11-18 1996-05-28 Intelliwire, Inc. Flexible elongate device having steerable distal extremity and apparatus for use therewith and method
EP0552429A1 (en) * 1992-01-18 1993-07-28 Richard Wolf GmbH Endoscope with a steerable distal end portion
US5299562A (en) * 1992-01-18 1994-04-05 Richard Wolf Gmbh Endoscope having a controllable distal end piece
US5318526A (en) * 1992-09-29 1994-06-07 Neuro Navigational Corporation Flexible endoscope with hypotube activating wire support
US5562619A (en) 1993-08-19 1996-10-08 Boston Scientific Corporation Deflectable catheter
US5865800A (en) 1993-08-19 1999-02-02 Boston Scientific Corporation Deflectable catheter
DE19534112A1 (en) * 1995-09-14 1997-03-20 Wolf Gmbh Richard Endoscopic instrument with steerable distal end
US5772578A (en) * 1995-09-14 1998-06-30 Richard Wolf Gmbh Endoscopic instrument
WO1999044489A1 (en) * 1998-03-06 1999-09-10 Forschungszentrum Karlsruhe Gmbh Pivotable part at the distal end of an instrument for endoscopic use
USRE41475E1 (en) * 1999-10-26 2010-08-03 Gyrus Acmi, Inc. Flexible ureteropyeloscope
US6749560B1 (en) 1999-10-26 2004-06-15 Circon Corporation Endoscope shaft with slotted tube
US6780151B2 (en) 1999-10-26 2004-08-24 Acmi Corporation Flexible ureteropyeloscope
US6485411B1 (en) 2000-04-12 2002-11-26 Circon Corporation Endoscope shaft with superelastic alloy spiral frame and braid
DE10308902B4 (en) * 2002-03-01 2013-07-18 Gyrus ACMI, Inc. (n.d.Ges.d. Staates Delaware) flexible Ureteropyeloskop
GB2456165A (en) * 2008-01-04 2009-07-08 Gyrus Medical Ltd Slotted, flexible shaft for an endoscopic instrument
WO2010030508A1 (en) * 2008-09-10 2010-03-18 Boston Scientific Scimed, Inc. Medical devices and tapered tubular members for use in medical devices
US8535243B2 (en) 2008-09-10 2013-09-17 Boston Scientific Scimed, Inc. Medical devices and tapered tubular members for use in medical devices
DE102010034345A1 (en) * 2010-08-14 2012-02-16 Richard Wolf Gmbh Endoscopic instrument comprises handle and shaft which is provided with bent section, where tubular support body is arranged in shaft, and tubular support body is divided in segments

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)