Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3805770 A
Publication typeGrant
Publication dateApr 23, 1974
Filing dateJul 18, 1972
Priority dateJul 22, 1971
Also published asDE2235786A1, DE2235786B2
Publication numberUS 3805770 A, US 3805770A, US-A-3805770, US3805770 A, US3805770A
InventorsOkada T
Original AssigneeOlympus Optical Co
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Endoscope guide and lubricating means
US 3805770 A
Abstract
An endoscope guide comprising a cylindrical spongy member and a cylindrical support fitted to the rear end of said spongy member so as to hold it tightly.
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent 1191 Okada Apr. 23, 1974 ENDOSCOPE GUIDE AND LUBRICATING MEANS [56] References Cited [75] Inventor: Takeshi Okada, Tokyo, Japan UNITED STATES PATENTS [73] Assignee: Olympus Optical Co., Ltd., Tokyo, 2,482,622 9/1949 Kahn 128/348 Japan 3,402,710 9/1968 Paleschuck 3,663,965 5/1972 Lee, Jr. et al 128/1 R [22] Filed: July 18, 1972 [21] App]. No.: 272,740 Primary Examiner-Lucie H. Laudenslager Attorney, Agent, or Firm-Flynn 8L Frishauf [30] Foreign Application Priority Data July 22, 1971 Japan 46-65098 [57] ABSTRACT An endoscope guide comprising a cylindrical spongy U. S. Cl. R member and a cylindrical suppgrt fitted to the rear lnt. end of said spgngy member so as to it Field of Search 128/3, 4, 5, 6, 7, 8, 9, 1 l28/1R,2H

6 Claims, 4 Drawing Figures e 1 ENDOSCOPE GUIDE AND LUBRICATING MEANS BACKGROUND OF THE INVENTION tine, it is generally considered necessary to insert the endoscope into the large intestine through the anus.

However, insertion of the endoscope into the anus is accompanied with great difficulties due to the contraction of the anus sphincter and friction between the anus and endoscope. Therefore, there have heretofore been made attempts to effect the smooth insertion of an endoscope into the anus by coating a lubricant in advance on the outer peripheral surface of the flexible portion of the endoscope. In this case, however, the endoscope is oppressed by the contracting action of the anus sphincter, causing the lubricant applied on the outside of the endoscope to be almost wiped off with the resultant obstruction of its free insertion. Most of the patients whose large intestine has to be examined have hemorrhoids and other infirmities around the anus and would, therefore, suffer a tremendous pain ifan endoscope is forcefully inserted into the anus.

It is accordingly the object of this invention to provide an endoscope guide permitting the smooth insertion of an endoscope into a body cavity without imparting a great stimulus to the inner walls of the body cavity.

SUMMARY OF THE INVENTION According to an aspect of this invention, there is provided an endoscope guide comprising a soft liquidabsorptive cylindrical member provided inside with a passageway for an endoscope and a cylindrical support connected to the rear end of said cylindrical member so as to support it securely.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view of an endoscope guide according to an embodiment of this invention;

FIG. 2 is a longitudinal sectional view of the endoscope guide of FIG. 1;

FIG. 3 is a cross sectional view on line III-Ill of FIG. 2; and

FIG. 4 is a similar cross sectional view of an endoscope guide according to another embodiment of the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS There will now be described by reference to the appended drawing an endoscope guide according to an embodiment of this invention. Referring to FIG. 1, the endoscope guide comprises a cylindrical member 1 formed of a soft liquid-absorptive material, for example, spongy rubber, or natural sponge;,a cylindrical support 4 made of harder material, for example, synthetic resin and comprising an annular head 2 fixed to the rear end of said cylindrical spongy member and an inlet opening 3; and a cylindrical casing 5 surrounding the support 4 and part of said cylindrical spongy member 1. The cylindrical spongy member 1 has a plurality of integral projections 1a formed on the inner walls of a passageway 6 for an endoscope 8, each projection Ia extending in the axial direction thereof. The projections 1a of spongy material enable an endoscope to be freely conducted through said passageway 6, whether it may have a large or small diameter.

There is now described the case where an endoscope fitted with the aforementioned guide is inserted into the large intestine through the anus. Prior to said insertion, the cylindrical spongy member 1 of the endoscope guide is impregnated with a lubricant, for example, Vaseline or petrolatum. Then the cylindrical spongy member 1 and part of the support 4 are inserted into the anus to set the endoscope guide in place. When the endoscope 8 is introduced into the cylindrical spongy member 1 through the inlet opening 3 and annular head 2, the outer periphery of the flexible tube of the endoscope 8 contacts the plural projections la of the cylindrical spongy member 1. At this time, there arises the contracting action of the anus sphincter, which oppresses the cylindrical spongy member 1 lying between the anus walls and endoscope 8. Said oppression causes the lubricant impregnated in the cylindrical spongy member 1 to ooze out so as to be coated on the outside of the flexible tube of the endoscope. Accordingly, friction between said flexible tube and the anus walls is reduced to allow for easy insertion of the endoscope into the large intestine.

As is apparent from the foregoing description, the present invention prevents a lubricant applied on the outside of the flexible tube of an endoscope from being wiped off by the contraction of the anus sphincter as is often the case with the prior art endoscope and permits the smooth insertion of an endoscope into the body cavity. Further at the time of said insertion, the soft cylindrical spongy member 1 protects any inflammation around the anus. Since the endoscope can be inserted into the body cavity without directly touching the anus walls, patients afflicted with anus diseases are prominently saved from strong pangs which might otherwise be experienced.

An endoscope guide according to another embodiment of this invention includes a plurality of core rods 7 made of elastic material which is harder than that of the cylindrical spongy member 1., for example, solid rubber. The solid rubber rods 7 are inserted into the cylindrical member 1 in its axial direction, facilitating the setting of the endoscope guide in the anus or other body cavities.

This invention is not limited to the aforementioned embodiments, but encompasses various modifications. Though the foregoing embodiments included a casing 5 for securely fixing the cylindrical spongy member I to the support 4 so as to provide the rigid construction of the endoscope guide, yet the endoscope guide carries out its function even in the absence of said casing 5. Further, if there are eliminated the plural projections 1a of the cylindrical spongy member 1 which were provided for the smooth insertion of an endoscope regardless of its diameter, the endoscope guide will still attain the object.

What is claimed is:

1. An endoscope guide and lubricating means comprising:

a soft liquid-absorptive generally cylindrical spongy member having a passageway therethrough in the axial direction thereof for allowing the insertion of an endoscope through said passageway;

a plurality of projections on the inner walls of said passageway, each of said projections extending in the axial direction of said passageway; and

a generally cylindrical support formed of harder material than that of the cylindrical spongy member and connected to said cylindrical spongy member to securely support same.

2. The endoscope guide according to claim 1 wherein the cylindrical spongy member has a plurality of rods made of harder material than that of said cylindrical spongy member, each of said rods being inserted into said cylindrical spongy member and extending in the axial direction thereof.

3. The endoscope guide according to claim 1 which further comprises a casing surrounding the cylindrical support and at least part of the cylindrical spongy memher.

4. The endoscope guide according to claim 1 wherein said cylindrical support comprises a first cylindrical portion and a second cylindrical portion of smaller diameter than said first cylindrical portion and connected to said first cylindrical portion, said cylindrical portions being coaxial with each other, said second cylindrical portion extending interior of said cylindrical spongy member.

5. The endoscope guide according to claim 4 further comprising a casing surrounding the cylindrical support and extending over the outer periphery of said cylindrical spongy member in the vicinity of said second cylindrical portion of said cylindrical support, said cylindrical spongy member being interposed between a portion of said casing and said second portion of said cylindrical support.

6. The endoscope guide according to claim 1 wherein said cylindrical spongy member is impregnated with a lubricant.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2482622 *Oct 11, 1948Sep 20, 1949Kahn EdwardSelf-retaining uterine cannula
US3402710 *Jun 27, 1966Sep 24, 1968Hydra Power CorpSelf-closing valve device for implantation in the human body
US3663965 *Jun 8, 1970May 23, 1972Gordon W CulpBacteria-resistant percutaneous conduit device
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4332242 *Mar 31, 1980Jun 1, 1982Machida Endoscope Co., Ltd.Guide tube assembly
US4461281 *Jun 15, 1977Jul 24, 1984Carson Robert WArthroscopic surgical apparatus and method
US4784117 *Feb 13, 1987Nov 15, 1988Olympus Optical Co., Ltd.Endoscope insertion assisting device
US4993406 *Sep 14, 1989Feb 19, 1991Reynolds William VDevice for dampening uncontrolled movement of surgical instruments
US5209219 *Mar 18, 1991May 11, 1993Laser Medical Research FoundationEndoscope adaptor
US5728103 *Aug 23, 1996Mar 17, 1998Applied Medical Technology, Inc.Implantable subcutaneous access device and method of using same
US5779624 *Dec 5, 1996Jul 14, 1998Boston Scientific CorporationSigmoid splint device for endoscopy
US5941815 *Jul 10, 1998Aug 24, 1999Helix Medical, Inc.Sigmoid splint device for endoscopy
US6315713 *Nov 22, 1999Nov 13, 2001Masazumi TakadaPropellant support apparatus for self-propelled colonoscope
US6315714 *Nov 29, 1999Nov 13, 2001Fuji Photo Optical Co., Ltd.Endoscope insertion guide pipe
US6454702 *Oct 14, 1999Sep 24, 2002Scimed Life Systems, Inc.Endoscope and endoscopic instrument system having reduced backlash when moving the endoscopic instrument within a working channel of the endoscope
US6503192 *May 17, 2000Jan 7, 2003Pentax CorporationInsertion facilitating device for intestinal endoscope
US6530881 *Jul 7, 2000Mar 11, 2003Vision Sciences, Inc.Sheath apparatus for endoscopes and methods for forming same
US6537205 *Nov 20, 2000Mar 25, 2003Scimed Life Systems, Inc.Endoscopic instrument system having reduced backlash control wire action
US6733440Aug 14, 2001May 11, 2004Vision Sciences, Inc.Apparatus and method for forming thin-walled elastic components from an elastomeric material
US6761717May 24, 2002Jul 13, 2004Scimed Life Systems, Inc.Multifilar flexible rotary shaft and medical instruments incorporating the same
US6793621 *Mar 8, 2002Sep 21, 2004Atropos LimitedColonic overtube
US6840900Dec 4, 2002Jan 11, 2005Scimed Life Systems, Inc.Endoscopic instrument system having reduced backlash control wire action
US6881186Aug 7, 2002Apr 19, 2005Scimed Life Systems, Inc.Endoscope and endoscopic instrument system having reduced backlash when moving the endoscopic instrument within a working channel of the endoscope
US7033315Oct 21, 2004Apr 25, 2006Scimed Life Systems, Inc.Endoscope and endoscopic instrument system having reduced backlash when moving the endoscopic instrument within a working channel of the endoscope
US7276067May 27, 2004Oct 2, 2007Boston Scientific Scimed, Inc.Multifilar flexible rotary shaft and medical instruments incorporating the same
US7341564Apr 24, 2002Mar 11, 2008Boston Scientific Scimed, Inc.Biopsy forceps device with transparent outer sheath
US7918783Mar 22, 2006Apr 5, 2011Boston Scientific Scimed, Inc.Endoscope working channel with multiple functionality
US7963908 *Oct 29, 2007Jun 21, 2011Kevin LindbergDevice to lubricate a penis or medical apparatus
US8216260Aug 25, 2008Jul 10, 2012Usgi Medical, Inc.Apparatus and methods for forming and securing gastrointestinal tissue folds
US8241280Sep 12, 2007Aug 14, 2012Boston Scientific Scimed, Inc.Multifilar flexible rotary shaft and medical instruments incorporating the same
US8366634 *Jun 16, 2009Feb 5, 2013Devicor Medical Products, Inc.Biopsy targeting cube with elastomeric body
US8652028Dec 2, 2004Feb 18, 2014Boston Scientific Scimed, Inc.Endoscopic instrument system having reduced backlash control wire action
US20100317991 *Jun 16, 2009Dec 16, 2010Leimbach Jessica PBiopsy Targeting Cube with Elastomeric Body
DE20015388U1 *Sep 6, 2000Mar 15, 2001Storm GeraldVorrichtung zur Abdichtung und Schmierung von in Trokarhülsen geführten Instrumenten
EP2386241A2 *May 6, 2011Nov 16, 2011Fujifilm CorporationGuide assembly for endoscope
WO1998024359A1 *Dec 3, 1997Jun 11, 1998Stanley F ChangSigmoid splint device for endoscopy
WO2000032118A1Dec 1, 1999Jun 8, 2000Atropos LimitedA medical device comprising an evertable sleeve
WO2000032119A1Dec 1, 1999Jun 8, 2000Atropos LimitedA medical device comprising an evertable sleeve
Classifications
U.S. Classification600/114, D24/138
International ClassificationA61M37/00, A61B1/00, A61B19/00, A61B1/31
Cooperative ClassificationA61B1/31
European ClassificationA61B1/31