US5755730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for use in cutting threads
Assignee: University College London
•
Filing: 1995-03-23
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Granted: 1998-05-26
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Expires: 2015-03-23
Abstract
Abstract A device is provided for cutting threads, particularly curing surgery carried out using an endoscope. The device has a cutting member having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a thread-cutting edge. In use, the cutting member is located at the distal end of an endoscope.
Inventors
- 👤 Paul Swain
- 👤 Feng Gong
- 👤 Timothy N. Mills
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:22
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/04; A61B17/0469; A61B17/0467
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
79 words
A device for endoscopically cutting a surgical thread, which comprises a cutting member having proximal and distal ends and having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a proximally facing thread-cutting edge and the cutting member being movably mounted with respect to the distal end of an endoscope whereby the surgical thread is cut by proximal movement of the cutting member relative to the thread.
Claim 2
Independent Claim
79 words
A device for endoscopically cutting a surgical thread, which comprises a cutting member having proximal and distal ends and having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a proximally facing thread-cutting edge and the cutting member being movably mounted with respect to the distal end of an endoscope whereby the surgical thread is cut by proximal movement of the cutting member relative to the thread.
Claim 3
Dependent Claim
12 words
A device according to claim 1, wherein the thread-cutting edge is arcuate.
Claim 4
Dependent Claim
25 words
A device according to claim 2, wherein the said aperture meets a curved outer surface of the cutting member to define the said thread-cutting edge.
Claim 5
Dependent Claim
32 words
A device according to claim 3, wherein the cutting member is cylindrical and has at least one said aperture extending therethrough from a forward end face thereof to the cylindrical surface thereof.
Claim 6
Dependent Claim
14 words
A device according to claim 4, wherein a pair of said apertures is provided.
Claim 7
Dependent Claim
14 words
A device according to claim 5, wherein the apertures are diametrically opposite one another.
Claim 8
Dependent Claim
37 words
A device according to claim 1, wherein the said enabling means comprises an elongate member connected at one end to the cutting member and at the other end to a mounting member for operation by the user.
Claim 9
Dependent Claim
38 words
A device according to claim 7, wherein the said elongate member is surrounded by a sheath in which the said elongate member is slidable, the sheath being connected neither to the cutting member nor to the mounting member.
Claim 10
Dependent Claim
49 words
A device as recited in claim 1 wherein the distal end of the endoscope has a distal face and the thread is cut between the distal face and the proximally facing thread-cutting edges as the cuffing member is moved proximally with respect to the distal end of the endoscope.
Claim 11
Independent Claim
150 words
A method of cutting a surgical thread at a suture site within a patient comprising: providing an endoscope having proximal and distal ends; providing a cutting member having proximal arid distal ends and having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a proximally facing thread-cutting edge, and the cutting member being movably mounted with respect to the distal end of an endoscope, inserting the cutting member into and through the endoscope such that the cutting member protrudes at least slightly from the distal end of the endoscope; inserting the surgical thread through the aperture(s) of the cutting member then holding the surgical thread in tension while advancing the cutting member and endoscope into the patient to the suture site; withdrawing the cutting member proximally relative to the thread to cut the thread with the thread-cutting edge.
Claim 12
Independent Claim
150 words
A method of cutting a surgical thread at a suture site within a patient comprising: providing an endoscope having proximal and distal ends; providing a cutting member having proximal arid distal ends and having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a proximally facing thread-cutting edge, and the cutting member being movably mounted with respect to the distal end of an endoscope, inserting the cutting member into and through the endoscope such that the cutting member protrudes at least slightly from the distal end of the endoscope; inserting the surgical thread through the aperture(s) of the cutting member then holding the surgical thread in tension while advancing the cutting member and endoscope into the patient to the suture site; withdrawing the cutting member proximally relative to the thread to cut the thread with the thread-cutting edge.
Claim 13
Independent Claim
98 words
A method of cutting a surgical thread at a suture site within a patient comprising: providing an endoscope having proximal and distal ends; providing a cutting member having at least one thread-cutting edge and being movably mounted with respect to the distal end of the endoscope; placing the surgical thread in tension; moving the thread cutting member proximally relative to the distal end of the endoscope to cause the angle between the longitudinal axis of the thread and axis of movement of the cutting member to increase such that the thread becomes cut against the thread cutting edge.
Claim 14
Independent Claim
98 words
A method of cutting a surgical thread at a suture site within a patient comprising: providing an endoscope having proximal and distal ends; providing a cutting member having at least one thread-cutting edge and being movably mounted with respect to the distal end of the endoscope; placing the surgical thread in tension; moving the thread cutting member proximally relative to the distal end of the endoscope to cause the angle between the longitudinal axis of the thread and axis of movement of the cutting member to increase such that the thread becomes cut against the thread cutting edge.
Claim 15
Independent Claim
65 words
A device for endoscopically cutting a surgical thread, which comprises a cutting member having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a single thread-cuffing edge that is the sole means for cutting the thread and the cutting member being movably mounted with respect to the distal end of a flexible endoscope.
Claim 16
Independent Claim
65 words
A device for endoscopically cutting a surgical thread, which comprises a cutting member having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a single thread-cuffing edge that is the sole means for cutting the thread and the cutting member being movably mounted with respect to the distal end of a flexible endoscope.
Claim 17
Independent Claim
87 words
A device for cutting a surgical thread within a patient, which comprises a cutting member having proximal and distal ends and having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a proximally facing thread-cutting edge, and the cutting member being slidably receivable in a tubular shaft that is positionable to introduce the cutting member into the patient whereby the surgical thread is cut by proximal movement of the cutting member relative to the thread.
Claim 18
Independent Claim
87 words
A device for cutting a surgical thread within a patient, which comprises a cutting member having proximal and distal ends and having at least one aperture extending therethrough of a size sufficient to permit the surgical thread to slide therethrough, the aperture having a proximally facing thread-cutting edge, and the cutting member being slidably receivable in a tubular shaft that is positionable to introduce the cutting member into the patient whereby the surgical thread is cut by proximal movement of the cutting member relative to the thread.
References Cited (Backward Citations)
US2521161A
Cited
US4038988A
Cited
US5112299A
Cited
US5100415A
Cited
US4961741A
Cited
US5133723A
Cited
US5087263A
Cited
US5163946A
Cited
US5084058A
Cited
GB2247841A
Cited
US5176691A
Cited
US5320629A
Cited
US5320629B1
Cited
US5192287A
Cited
US5217471A
Cited
US5234444A
Cited
US5403330A
Cited
WO1994005220A1
Cited
US5292327A
Cited
US5439470A
Cited
US5269791A
Cited
US5324298A
Cited
US5334200A
Cited
US5397326A
Cited
US5423837A
Cited
US5549618A
Cited
US5601576A
Cited
EP0706779A1
Cited
US5562684A
Cited
US5571117A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-05-25 | 2001-11-24 | 2002-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-05-25 | 2005-11-24 | 2006-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-05-25 | 2009-11-24 | 2010-05-26 | $7700.00 | Window Closed / Lapsed |