US4677978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency cricothyrotomy system and cricothyrotomy kit
Assignee: University of Florida
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Filing: 1984-09-27
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Granted: 1987-07-07
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Expires: 2004-09-27
Abstract
Abstract A method for performing emergency cricothyrotomy ventilation comprising palpating the cricothyroid membrane between the thyroid and cricoid cartilages and thereafter inserting an over-the-needle catheter, needle and syringe into the patient's airway through the incision. Determining that the needle is in the airway by applying gentle back pressure on the plunger of the syringe and, once the catheter, needle and syringe are determined to be in the airway, the needle and the syringe are removed. A guide-wire is fed through the over-the-needle catheter into the airway and, thereafter, the over-the-needle catheter is removed and the cricothyroid membrane is dilated. An air passage catheter is introduced into the dilated membrane along the guide-wire and the guide-wire is thereafter removed and the air passage catheter is secured in its position.
Inventors
- 👤 Richard J. Melker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:41
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0465; A61M16/0472; A61M2209/00; A61M2209/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A method for performing emergency cricothyrotomy ventilation permitting spontaneous inspiration and complete exhalation between inspirations comprising the steps: palpatating the cricothyroid membrane between the thyroid and cricoid cartilages; making an incision in the membrane between the thyroid and cricoid cartilages; placing an over-the-needle catheter over a hollow needle; inserting an over-the-needle catheter and needle into the airway between the thyroid and cricoid cartilages through the incision with an attached syringe remaining outside of the airway; determining that the needle is in the airway by applying gentle back pressure on the syringe; removing the needle and syringe; feeding a guide-wire through the over-the-needle catheter into the airway; removing the over-the-needle catheter; dilating the cricothyroid membrane to receive an air passage catheter having an internal diameter of about 5.5 mm thereby permitting spontaneous inspiration and complete exhalation between inspirations; introducing an air passage catheter having an internal diameter of about 5.5 mm along the guide-wire into the airway; removing the guide-wire and securing the air passage catheter in the airway.
Claim 2
Independent Claim
168 words
A method for performing emergency cricothyrotomy ventilation permitting spontaneous inspiration and complete exhalation between inspirations comprising the steps: palpatating the cricothyroid membrane between the thyroid and cricoid cartilages; making an incision in the membrane between the thyroid and cricoid cartilages; placing an over-the-needle catheter over a hollow needle; inserting an over-the-needle catheter and needle into the airway between the thyroid and cricoid cartilages through the incision with an attached syringe remaining outside of the airway; determining that the needle is in the airway by applying gentle back pressure on the syringe; removing the needle and syringe; feeding a guide-wire through the over-the-needle catheter into the airway; removing the over-the-needle catheter; dilating the cricothyroid membrane to receive an air passage catheter having an internal diameter of about 5.5 mm thereby permitting spontaneous inspiration and complete exhalation between inspirations; introducing an air passage catheter having an internal diameter of about 5.5 mm along the guide-wire into the airway; removing the guide-wire and securing the air passage catheter in the airway.
References Cited (Backward Citations)
US2786469A
Cited
US2873742A
Cited
US2991787A
Cited
US3334631A
Cited
US3511243A
Cited
US3688773A
Cited
US3704529A
Cited
US3754554A
Cited
US3811449A
Cited
US3941119A
Cited
US4351333A
Cited
US4306562A
Cited
US4331138A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-06 | 1991-01-05 | 1991-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-06 | 1995-01-05 | 1995-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-06 | 1999-01-05 | 1999-07-07 | $7700.00 | Window Closed / Lapsed |