US3908652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical infusion apparatus
Assignee: Individual
•
Filing: 1973-09-10
•
Granted: 1975-09-30
•
Expires: 1993-09-10
Abstract
Abstract A medical infusion apparatus has an infusion flask an infusion tube fastened to the flask and lying in a two part casing provided with an electrical control system and a drip valve or infusion pump, the flask being exchangeably fastened to the casing and the valve or pump being exchangeably disposed at the bottom of the casing. Heating means is provided to heat the liquid being infused.
Inventors
- 👤 Hermann Weissinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:15
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/168; A61M5/172; A61M39/00; A61M39/22; A61M39/26; A61M5/142; A61M5/44; A61M2205/00; A61M2205/36; A61M2205/3653; Y; Y10; Y10S; Y10S128/00; Y10S128/13
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
157 words
Infusion apparatus comprising: a. a pair of laterally spaced, hollow casing sections having top and bottom ends and defining a space between them, b. an infusion flask mounting flange at the top end of the casing sections spanning the space between them, c. an infusion flask mounted on the mounting flange in inverted position, d. drop sensor means mounted on the casing sections adjacent the top end thereof and operatively spanning the space between the casing sections, e. a drip chamber communicating with the infusion flask and positioned freely in the space between the casing sections for sensing by the drop sensor means, f. infusion outfeed control means mounted on the casing sections adjacent the bottom end thereof and operatively spanning the space between the casing sections, and g. an infusion tube communicating with the drip chamber and extending downward therefrom freely through the space between the casing sections and operatively connected to the outfeed control means.
Claim 2
Dependent Claim
157 words
Infusion apparatus comprising: a. a pair of laterally spaced, hollow casing sections having top and bottom ends and defining a space between them, b. an infusion flask mounting flange at the top end of the casing sections spanning the space between them, c. an infusion flask mounted on the mounting flange in inverted position, d. drop sensor means mounted on the casing sections adjacent the top end thereof and operatively spanning the space between the casing sections, e. a drip chamber communicating with the infusion flask and positioned freely in the space between the casing sections for sensing by the drop sensor means, f. infusion outfeed control means mounted on the casing sections adjacent the bottom end thereof and operatively spanning the space between the casing sections, and g. an infusion tube communicating with the drip chamber and extending downward therefrom freely through the space between the casing sections and operatively connected to the outfeed control means.
Claim 3
Dependent Claim
83 words
The infusion apparatus of claim 1 wherein the infusion tube is provided at its outfeed end with a valve body housing a spring-loaded ball valve, an injection needle adapted for removable attachment to the valve body, and valve operator means operatively associated with the needle independently of the infeed end of the needle for engaging and unseating the ball valve when the needle is attached to the valve body, for the unobstructed flow of infusion liquid into the infeed end of the needle.
Claim 4
Dependent Claim
23 words
The infusion apparatus of claim 2 wherein the valve operator means comprises an arcuate segment extension of the wall of the injection needle.
Claim 5
Dependent Claim
58 words
The infusion apparatus of claim 1 wherein the infusion outfeed control means comprises a drip valve including two clamp jaws of which at least one is connected to one end of an elongated lever provided with a pivot adjacent said end, and a control electro magnet engages the lever adjacent the opposite end thereof for pivoting the lever.
Claim 6
Dependent Claim
59 words
The infusion apparatus of claim 4 wherein the other of said two clamp jaws is connected to one end of a second elongated lever provided adjacent said end with the same pivot as the first named lever, and an eccentric adjusting pin engages the second lever adjacent the opposite end thereof for adjusting the position of the second jaw.
Claim 7
Dependent Claim
21 words
The infusion apparatus of claim 4 including spring means engaging the lever for returning the associated clamp jaw to unclamping position.
References Cited (Backward Citations)
US1534913A
Cited
US2254833A
Cited
US2999499A
Cited
US3105490A
Cited
US3247851A
Cited
US3390577A
Cited
US3425415A
Cited
US3832998A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |