US4892279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fully portable medical I.V. equipment stand/pole
Assignee: Polymedical Technologies Inc
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Filing: 1987-05-04
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Granted: 1990-01-09
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Expires: 2007-05-04
Abstract
Abstract Disclosed is a fully portable medical I.V. equipment stand/pole (12). This invention is a triple sectioned telescoping mast assembly (13),(14),(15), with each section able to be locked into the other by means of an internal rotary cam-clutch (16),(17),(18),(19), which maintains a desired height of I.V. fluid or feeding solution above the patient regardless if the patient is ambulatory or in bed. Opening or closing of the I.V. equipment stand/pole is accomplished with a single movement of a control handle(24) which controls the mast assembly support legs(23). Fluids and feeding solutions are hung from the hanger rod assembly (30,),(31),(32). A control knob (32) frees or restricts horizontal movement of the hanger rods (30), and the circular rotation of the entire assembly (30),(31),(32).
Inventors
- 👤 William G. Lafferty
- 👤 Robert E. Howard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:58
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/1414; A61M5/1415; F; F16; F16M; F16M11/00; F16M11/02; F16M11/04; F16M11/043; F16M11/046; F16M11/20; F16M11/24; F16M11/242; F16M11/245; F16M11/42
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
246 words
A collapsible and fully portable medical I.V. equipment stand/pole of a character described above which comprises: a. a many sectioned mast assembly made from hollow tubes, with each being of a slightly larger diameter and the smallest being the uppermost tube and the largest being the lowermost, and each being able to slide smoothly within one another in a telescoping fashion; b. an internal pneumatic safety device built within the lower section of said tube mast assembly which acts to compress air as the upper sections of said mast assembly are lowered accidentally or on purpose thereby limiting the downward force and speed of said upper sections, but allowing movement of upper sections in both directions; c. a slidable control handle assembly which is mounted on the lower section of said mast assembly to which the lower leg supports a plurality of legs which support said mast assembly are connected via vertical rods and which allow for opening or closing of square tubular leg supports in one continuous motion; d. a hanger rod assembly which is permanently attached to the top of the uppermost said tubular section of said mast allowing independent inward and outward movement of each hanger rod and which rotates freely in either direction 360 degrees around the circumference of said uppermost tubular section and both movements of said hanger rod asembly which are free or able to be locked into position with the loosening or tightening of a vertically positioned control knob.
Claim 2
Dependent Claim
246 words
A collapsible and fully portable medical I.V. equipment stand/pole of a character described above which comprises: a. a many sectioned mast assembly made from hollow tubes, with each being of a slightly larger diameter and the smallest being the uppermost tube and the largest being the lowermost, and each being able to slide smoothly within one another in a telescoping fashion; b. an internal pneumatic safety device built within the lower section of said tube mast assembly which acts to compress air as the upper sections of said mast assembly are lowered accidentally or on purpose thereby limiting the downward force and speed of said upper sections, but allowing movement of upper sections in both directions; c. a slidable control handle assembly which is mounted on the lower section of said mast assembly to which the lower leg supports a plurality of legs which support said mast assembly are connected via vertical rods and which allow for opening or closing of square tubular leg supports in one continuous motion; d. a hanger rod assembly which is permanently attached to the top of the uppermost said tubular section of said mast allowing independent inward and outward movement of each hanger rod and which rotates freely in either direction 360 degrees around the circumference of said uppermost tubular section and both movements of said hanger rod asembly which are free or able to be locked into position with the loosening or tightening of a vertically positioned control knob.
Claim 3
Dependent Claim
33 words
The invention described in claim 1 characterized in that a fixed upper leg support to which each upper leg is attached and allowed hinge movement, is permanently attached to the lower mast section.
Claim 4
Dependent Claim
127 words
An assembly as claimed in claim 1 wherein the control handle is a tubular sleeve long enough to accomodate a surrounding human hand, and which in a single motion is able to slide along the lowest section of said mast assembly while connected to four vertical rods whose other ends are attached to a floating lower collar to which is attached a lower leg support assembly, and which when moved downwardly in one continuous motion, causes said lower leg support assembly, including legs, to open outwardly and away from their closed position along the length of the lower mast section, with the horizontal leg supports achieving a negative incline which prohibits inward or collapsing movement of legs without intentional initiation of upward movement on said control handle.
Claim 5
Dependent Claim
100 words
An internal safety device built into lower section of said mast assembly as claimed in claim 1 comprising: a. a flexible seal mounted to the base of each of said upper sections which said sections telescope into said lower mast section; b. a check valve assembly permanently attached to the bottom of said lower mast section which allows air to pass into said mast assembly as the upper sections are extended, but which slowly bleeds air out of said lower section when the upper sections of said mast assembly are spontaneously lowered into the lower section of said mast assembly.
References Cited (Backward Citations)
US2303978A
Cited
US2706653A
Cited
US2957187A
Cited
FR1224721A
Cited
US3143332A
Cited
US4332378A
Cited
US4360281A
Cited
US4383252A
Cited
US4511157A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-01-08 | 1993-07-10 | 1994-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-01-08 | 1997-07-10 | 1998-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-01-08 | 2001-07-10 | 2002-01-09 | $7700.00 | Window Closed / Lapsed |