US3646938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Postpartum blood loss receptacle
Assignee: Individual
•
Filing: 1970-07-27
•
Granted: 1972-03-07
•
Expires: 1990-07-27
Abstract
Abstract A thin pliable sheet having concentric graduations for receiving and measuring postpartum blood loss.
Inventors
- 👤 John N Haswell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
A; A61; A61M; A61M27/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
84 words
The method of collecting and measuring postpartum blood loss which comprises the steps of: a. placing graduations on a thin impervious substantially flat pliable sheet; b. placing The sheet under the buttocks of a patient; c. collecting the blood in a semisolid gelatinous type mass on the sheet; d. grasping the sheet at predetermined support points adjacent the outer periphery of the sheet; e. holding the sheet pendantly at said support points; f. and reading the blood loss directly by aid of said graduations.
Claim 2
Independent Claim
84 words
The method of collecting and measuring postpartum blood loss which comprises the steps of: a. placing graduations on a thin impervious substantially flat pliable sheet; b. placing The sheet under the buttocks of a patient; c. collecting the blood in a semisolid gelatinous type mass on the sheet; d. grasping the sheet at predetermined support points adjacent the outer periphery of the sheet; e. holding the sheet pendantly at said support points; f. and reading the blood loss directly by aid of said graduations.
Claim 3
Dependent Claim
36 words
The method of claim 1 comprising the additional step of: g. estimating blood loss, prior to said grasping and after said collecting, by observing the amount of blood on said sheet in its substantially flat condition.
Claim 4
Independent Claim
82 words
The method of collecting and measuring postpartum blood loss which comprises the steps of: a. placing a thin impervious substantially flat pliable sheet having graduations thereon under the buttocks of the patient; b. collecting the blood in a semisolid gelatinous type mass on the sheet; c. grasping the sheet at predetermined support points adjacent to the outer periphery of the sheet; d. holding the sheet pendantly at said support points; e. and reading the blood loss directly by aid of said graduations.
Claim 5
Independent Claim
82 words
The method of collecting and measuring postpartum blood loss which comprises the steps of: a. placing a thin impervious substantially flat pliable sheet having graduations thereon under the buttocks of the patient; b. collecting the blood in a semisolid gelatinous type mass on the sheet; c. grasping the sheet at predetermined support points adjacent to the outer periphery of the sheet; d. holding the sheet pendantly at said support points; e. and reading the blood loss directly by aid of said graduations.
References Cited (Backward Citations)
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Cited
US1033717A
Cited
US2669720A
Cited
GB1026786A
Cited
US3199507A
Cited
US3371897A
Cited
US3452750A
Cited
US3386444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |