Patent US4887610A successfully refreshed from Google Patents.
US4887610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to measure electrical and mechanical events in the human sphincters
Assignee: UVA Licensing and Ventures Group
•
Filing: 1988-10-19
•
Granted: 1989-12-19
•
Expires: 2008-10-19
Abstract
Abstract A manometric catheter which includes a sleeve device segment and attached to this sleeve device segment are two metal electrodes. This design of the manometric catheter has the capability of measuring simultaneous mechanical and electrical events in the human sphincters.
Inventors
- 👤 Ravinder K. Mittal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:17
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/24; A61B5/316; A61B5/389; A61B5/391; A61B5/03; A61B5/036
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
80 words
A device for measuring physical pressure charges and electrical changes in a sphincter comprising a catheter which has a pressure sensing means for sensing pressure changes and electrical sensing means for sensing electrical changes, wherein the pressure sensing means and the electrical sensing means are located in a same area on the catheter, but on different sides of the catheter so that the measuring of physical changes and electrical changes take place simultaneously at a given point of the sphincter.
Claim 2
Independent Claim
80 words
A device for measuring physical pressure charges and electrical changes in a sphincter comprising a catheter which has a pressure sensing means for sensing pressure changes and electrical sensing means for sensing electrical changes, wherein the pressure sensing means and the electrical sensing means are located in a same area on the catheter, but on different sides of the catheter so that the measuring of physical changes and electrical changes take place simultaneously at a given point of the sphincter.
Claim 3
Dependent Claim
14 words
The device of claim 1, wherein the pressure sensing means is a sleeve device.
Claim 4
Dependent Claim
36 words
The device of claim 2, wherein the electrical sensing means is bipolar electrodes which are placed 1 cm apart and wherein a first electrode is spaced 1 cm from a proximal margin of the sleeve device.
Claim 5
Dependent Claim
78 words
The device of claim 3, wherein the bipolar electrodes are metal foil squares, and wherein two Teflon-coated, insulated metal wires are guided through a side hole of a manometric catheter wherein proximal ends of the wires are externalized at a proximal end of the catheter and distal ends of the wires have the insulation removed up to 0.5 cm from tips of the wire and the uninsulated tips are attached to an undersurface of the metal foil squares.
Claim 6
Dependent Claim
18 words
The device of claim 4, wherein the metal used for the foil squares and the wires is platinum.
Claim 7
Dependent Claim
18 words
The device of claim 4, wherein the wires are arc-welded to the undersurface of the metal foil squares.
Claim 8
Dependent Claim
32 words
The device of claim 3, wherein the bipolar electrodes consist of uninsulated metal wire wound around the catheter wherein each electrode has a surface area of at least 1 cm 2 .
Claim 9
Dependent Claim
46 words
The device of claim 2, wherein the electrical sensing means consists of two long parallel electrodes which are at least as long as the sleeve device and are made up of an uninsulated metal wire coil and are attached to outside walls of the sleeve device.
Claim 10
Dependent Claim
13 words
The device of claim 1, wherein the electrical sensing means is bipolar electrodes.
Claim 11
Independent Claim
100 words
A device for measuring physical pressure changes and electrical changes in a sphincter, comprising: a catheter having a pressure sensing means for sensing pressure changes and an electrical sensing means for sensing electrical changes; wherein the pressure sensing means and the electrical sensing means are located in a same area of the catheter, and wherein further the pressure sensing means occupies one-fourth of a circumference of the catheter and the electrical sensing means occupies a remaining three-fourths of the circumference of the catheter so that the catheter simultaneously measures pressure and electrical changes at a given point of the sphincter.
Claim 12
Independent Claim
100 words
A device for measuring physical pressure changes and electrical changes in a sphincter, comprising: a catheter having a pressure sensing means for sensing pressure changes and an electrical sensing means for sensing electrical changes; wherein the pressure sensing means and the electrical sensing means are located in a same area of the catheter, and wherein further the pressure sensing means occupies one-fourth of a circumference of the catheter and the electrical sensing means occupies a remaining three-fourths of the circumference of the catheter so that the catheter simultaneously measures pressure and electrical changes at a given point of the sphincter.
Claim 13
Dependent Claim
14 words
The device of claim 10, wherein the pressure sensing means is a sleeve device.
Claim 14
Dependent Claim
36 words
The device of claim 11, wherein the electrical sensing means is bipolar electrodes which are placed 1 cm. apart and wherein a first electrode is spaced 1 cm. from a proximal margin of the sleeve device.
Claim 15
Dependent Claim
78 words
The device of claim 12, wherein the bipolar electrodes are metal foil squares, and wherein two Teflon-coated, insulated metal wires are guided through a side hole of a manometic catheter wherein proximal ends of the wires are externalized at a proximal end of the catheter and distal ends of the wires have the insulation removed up to 0.5 cm. from tips of the wire and the uninsulated tips are attached to an undersurface of the metal foil squares.
Claim 16
Dependent Claim
18 words
The device of claim 13, wherein the metal used for the foil squares and the wires is platinum.
Claim 17
Dependent Claim
18 words
The device of claim 13, wherein the wires are arc-welded to the undersurface of the metal foil squares.
Claim 18
Dependent Claim
32 words
The device of claim 12, wherein the bipolar electrodes consist of uninsulated metal wire wound around the catheter wherein each electrode has a surface area of at least 1 cm 2 .
Claim 19
Dependent Claim
46 words
The device of claim 11, wherein the electrical sensing means consists of two long parallel electrodes which are at least as long as the sleeve device and are made up of an uninsulated metal wire coil and are attached to outside walls of the sleeve device.
Claim 20
Dependent Claim
13 words
The device of claim 10, wherein the electrical sensing means is bipolar electrodes.
References Cited (Backward Citations)
US31377A
Cited
US3480003A
Cited
US3734094A
Cited
US3939823A
Cited
US4063548A
Cited
US4191196A
Cited
US4168703A
Cited
US4224949A
Cited
USRE31377E
Cited
US4364239A
Cited
US4630611A
Cited
US4706688A
Cited
US4444195A
Cited
US4776349A
Cited
US4785823A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-12-18 | 1993-06-19 | 1993-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-12-18 | 1997-06-19 | 1997-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-12-18 | 2001-06-19 | 2001-12-19 | $7700.00 | Window Closed / Lapsed |