US4727866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Intrauterine device detection and removal system
Assignee: Ortho Pharmaceutical Canada Ltd
•
Filing: 1985-09-03
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Granted: 1988-03-01
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Expires: 2005-09-03
Abstract
Abstract A system for the detection, location and extraction of an intrauterine device ("IUD") including a magnetic IUD, a locator probe to be used intravaginally and an extractor probe to be used intrauterinally, both containing at least one Hall effect generator. The probe is inserted into the patient and an indicator means is provided to communicate the presence of the IUD, in the case of the locator, or the distance of the IUD from the probe, in the case of the extractor. After positioning the extractor next to the IUD using the indicator for guidance, grasping means in the extractor is actuated to effect temporary attachment of the IUD to the extractor which is then withdrawn from the uterus.
Inventors
- 👤 Billy R. Livesay
- 👤 Howard J. Tatum
- 👤 Melvin R. Toews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:49
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/50; A61B17/52; A61B5/00; A61B5/06; A61B5/061; A61B5/062; A61F; A61F6/00; A61F6/06; A61F6/14; A61F6/18
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
64 words
A device for the detection, location and translocation of a non-spherical magnet which comprises three Hall effect generators disposed perpendicularly to each other, a three-dimensional display indicator means indicating distance to the magnet which responds to the output voltage of all of the Hall effect generators in electrical connection with said generators, and grasping means for temporary attachment of the magnet to the device.
Claim 2
Independent Claim
64 words
A device for the detection, location and translocation of a non-spherical magnet which comprises three Hall effect generators disposed perpendicularly to each other, a three-dimensional display indicator means indicating distance to the magnet which responds to the output voltage of all of the Hall effect generators in electrical connection with said generators, and grasping means for temporary attachment of the magnet to the device.
Claim 3
Dependent Claim
22 words
The device of claim 1, wherein said device comprises a probe portion adapted to be inserted into the uterus of a patient.
Claim 4
Dependent Claim
19 words
The device of claim 1, wherein said probe portion is constructed of materials incapable of holding a magnetic dipole.
Claim 5
Dependent Claim
20 words
The device of claim 1, wherein said grasping means comprises at least two opposing finger members which separate when actuated.
Claim 6
Dependent Claim
29 words
The device of claim 1, wherein the said Hall effect generators and said grasping means are contained within a probe which is in electrical connection with said indicator means.
Claim 7
Dependent Claim
23 words
The device of claim 5, wherein said probe is of a diameter to allow passage through the cervical os of a human female.
Claim 8
Dependent Claim
18 words
The device of claim 1, wherein said Hall effect generators and said grasping means are in close proximity.
Claim 9
Dependent Claim
14 words
The device of claim 7, wherein said grasping means surrounds said Hall effect generators.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |