GB2130885A - Flexible distal end portion for endoscope - Google Patents
Flexible distal end portion for endoscope Download PDFInfo
- Publication number
- GB2130885A GB2130885A GB08232673A GB8232673A GB2130885A GB 2130885 A GB2130885 A GB 2130885A GB 08232673 A GB08232673 A GB 08232673A GB 8232673 A GB8232673 A GB 8232673A GB 2130885 A GB2130885 A GB 2130885A
- Authority
- GB
- United Kingdom
- 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- Withdrawn
Links
- 229920003023 plastic Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 description 3
- 238000001574 biopsy Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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
- A61B1/005—Flexible endoscopes
- A61B1/0051—Flexible endoscopes with controlled bending of insertion part
- A61B1/0055—Constructional details of insertion parts, e.g. vertebral elements
- A61B1/0056—Constructional details of insertion parts, e.g. vertebral elements the insertion parts being asymmetric, e.g. for unilateral bending mechanisms
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
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)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08232673A 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 |
|---|---|---|---|
| GB08232673A GB2130885A (en) | 1982-11-16 | 1982-11-16 | Flexible distal end portion for endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2130885A true GB2130885A (en) | 1984-06-13 |
Family
ID=10534291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08232673A 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)
| 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 |
| 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 |
| EP0183585A3 (en) * | 1984-11-02 | 1988-06-01 | Warner-Lambert Technologies, Inc. | Flexible plastic tube for endoscopes and the like |
| WO1992003964A1 (en) * | 1990-09-12 | 1992-03-19 | Adair Edwin Lloyd | Deflectable sheath for optical catheter |
| EP0521595A3 (en) * | 1991-02-15 | 1993-03-03 | 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 |
-
1982
- 1982-11-16 GB GB08232673A patent/GB2130885A/en not_active Withdrawn
Cited By (29)
| 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 |
| 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 |
| 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 |
| US5520644A (en) * | 1991-11-18 | 1996-05-28 | Intelliwire, Inc. | Flexible elongate device having steerable distal extremity and apparatus for use therewith and method |
| EP0543539A1 (en) * | 1991-11-18 | 1993-05-26 | Intelliwire, Inc. | Steerable flexible elongate device and method for use therewith |
| US5299562A (en) * | 1992-01-18 | 1994-04-05 | Richard Wolf Gmbh | Endoscope having a controllable distal end piece |
| EP0552429A1 (en) * | 1992-01-18 | 1993-07-28 | Richard Wolf GmbH | Endoscope with a steerable distal end portion |
| 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 |
| 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 |
| USRE41475E1 (en) * | 1999-10-26 | 2010-08-03 | Gyrus Acmi, Inc. | 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 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 |
| 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) |