US5944654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Endoscope with replaceable irrigation tube
Assignee: Vista Medical Technologies Inc
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Filing: 1996-11-14
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Granted: 1999-08-31
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Expires: 2016-11-14
Abstract
Abstract An endoscope apparatus includes a handle assembly and an outer tube having a distal end and a proximal end, the latter being fixed to the handle assembly. The outer tube is provided with a groove in an outermost surface of the outer tube and extending lengthwise of the outer tube. The apparatus further includes an irrigation tube for disposal in the groove for conducting fluid in a direction from the proximal end to the distal end.
Inventors
- 👤 John O. Crawford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:55
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/00073; A61B1/12; A61B1/127
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
216 words
An endoscope apparatus comprising: a handle assembly; an endoscope tube having a distal end and a proximal end, said proximal end being fixed to said handle assembly, said endoscope tube having a groove in an outermost surface thereof that extends lengthwise between said distal and proximal ends, said groove having in cross-section a first relatively narrow portion at said outermost surface and a second relatively wide portion at a point removed from said first relatively narrow portion; an irrigation tube that is made of a flexible, resilient material and is formed with an outer diameter greater than the width of said first relatively narrow portion of said groove, said irrigation tube being removably disposed in and extending lengthwise of said groove, with at least a major portion of said irrigation tube residing in said relatively wide portion of said groove and being gripped by said endoscope tube, and said irrigation tube having a distal end with a discharge opening adjacent said distal end of said endoscope tube; and a deflector fixed to said distal end of said endoscope tube and at least in part aligned with said groove, so as to deflect fluid discharged from said discharge opening, said deflector being provided with a recess to facilitate axial insertion of said irrigation tube into said groove.
Claim 2
Dependent Claim
216 words
An endoscope apparatus comprising: a handle assembly; an endoscope tube having a distal end and a proximal end, said proximal end being fixed to said handle assembly, said endoscope tube having a groove in an outermost surface thereof that extends lengthwise between said distal and proximal ends, said groove having in cross-section a first relatively narrow portion at said outermost surface and a second relatively wide portion at a point removed from said first relatively narrow portion; an irrigation tube that is made of a flexible, resilient material and is formed with an outer diameter greater than the width of said first relatively narrow portion of said groove, said irrigation tube being removably disposed in and extending lengthwise of said groove, with at least a major portion of said irrigation tube residing in said relatively wide portion of said groove and being gripped by said endoscope tube, and said irrigation tube having a distal end with a discharge opening adjacent said distal end of said endoscope tube; and a deflector fixed to said distal end of said endoscope tube and at least in part aligned with said groove, so as to deflect fluid discharged from said discharge opening, said deflector being provided with a recess to facilitate axial insertion of said irrigation tube into said groove.
Claim 3
Dependent Claim
262 words
An endoscope apparatus comprising: a handle; an endoscope tube having a distal end and a proximal end, with said distal end having an end face and said proximal end being fixed to said handle, said endoscope tube having a groove in an outermost surface thereof that extends lengthwise between said distal and proximal ends, said groove having in cross-section a first relatively narrow portion at said outermost surface and a second relatively wide portion at a point removed from said first relatively narrow portion; an irrigation tube that is made of a flexible, resilient material and is formed with an outer diameter greater than the width of said first relatively narrow portion of said groove, said irrigation tube being removably disposed in and extending lengthwise of said groove, with at least a major portion of said irrigation tube residing in said relatively wide portion of said groove and being gripped by said endoscope tube, and said irrigation tube having a distal end with a discharge opening adjacent said distal end of said endoscope tube; and a deflector attached to said distal end of said irrigation tube with said deflector extending beyond the distal end of said irrigation tube and angled inwardly toward the longitudinal axis of said endoscope tube, whereby to direct fluid passing out of said discharge opening toward said end face of said distal end of said endoscope tube; said groove having an enlarged portion at said distal end of said endoscope tube and at least a portion of said deflector being disposed in said enlarged portion of said groove.
Claim 4
Dependent Claim
262 words
An endoscope apparatus comprising: a handle; an endoscope tube having a distal end and a proximal end, with said distal end having an end face and said proximal end being fixed to said handle, said endoscope tube having a groove in an outermost surface thereof that extends lengthwise between said distal and proximal ends, said groove having in cross-section a first relatively narrow portion at said outermost surface and a second relatively wide portion at a point removed from said first relatively narrow portion; an irrigation tube that is made of a flexible, resilient material and is formed with an outer diameter greater than the width of said first relatively narrow portion of said groove, said irrigation tube being removably disposed in and extending lengthwise of said groove, with at least a major portion of said irrigation tube residing in said relatively wide portion of said groove and being gripped by said endoscope tube, and said irrigation tube having a distal end with a discharge opening adjacent said distal end of said endoscope tube; and a deflector attached to said distal end of said irrigation tube with said deflector extending beyond the distal end of said irrigation tube and angled inwardly toward the longitudinal axis of said endoscope tube, whereby to direct fluid passing out of said discharge opening toward said end face of said distal end of said endoscope tube; said groove having an enlarged portion at said distal end of said endoscope tube and at least a portion of said deflector being disposed in said enlarged portion of said groove.
References Cited (Backward Citations)
US34110A
Cited
US4616631A
Cited
US4826280A
Cited
USRE34110E
Cited
WO1991004703A1
Cited
US4947827A
Cited
US5257617A
Cited
US5154164A
Cited
US5630795A
Cited
US5667472A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |