US3670926A - Intravenous feeding apparatus - Google Patents

Intravenous feeding apparatus Download PDF

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US3670926A
US3670926A US857151A US3670926DA US3670926A US 3670926 A US3670926 A US 3670926A US 857151 A US857151 A US 857151A US 3670926D A US3670926D A US 3670926DA US 3670926 A US3670926 A US 3670926A
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drum
base
track
spring
contents
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US857151A
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Charles C Hill
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POWER Tech CORP
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POWER Tech CORP
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/148—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons flexible, e.g. independent bags

Definitions

  • An intravenous feeding device comprising a base, a drum ⁇ 5! ⁇ 1m, (I B67d 5/22 movable along a track on said base and a constant tension [58] Field 61 Search ..222/47, 99, 96, 100, 101, 95, coiled p ng having n n thereof fix t0 he drum and the 222/23; 128/214, 214.1; 116/129 AB other to the base so that when a collapsible container is positioned, the drum acts upon the collapsible container to 5 References cu dispense the contents of the container.
  • a latch is provided for locking the drum with the spring 1n its extended position and UNITED STATES PATENTS acceleration and position responsive means are provided for locking the drum in the event that the drum is released during L616 10,1964 loading or in the event that the material is dispensed at exces- 2'198'666 4/1940 sive speed or in the event that one end of the base is elevated 15321297 4/1925 beyond a predetermined angle.
  • Gauge means are provided for indicating the rate at which fluid is dispensed.
  • This invention relates to an intravenous feeding apparatus.
  • an intravenous feeding apparatus which will effectively dispense fluids and drugs from a collapsible container through a tube for feeding a patient intravenously; which can be readily loaded; which is operable upon excessive acceleration or dispensing to lock and prevent further dispensing; and which is operable upon being moved to a position that might tend to cause air to move toward the patient to prevent further dispensing; which can be readily manufactured and serviced; and which requires a minimum of maintenance.
  • An intravenous feeding device comprising a base, a drum movable along a track on said base and a constant tension coiled spring having one end thereof fixed to the drum and the other to the base so that when a collapsible container is positioned, the drum acts upon the collapsible container to dispense the contents of the container.
  • a latch is provided for locking the drum with the spring in its extended position and acceleration and position responsive means are provided for locking the drum in the event that the material is dispensed at excessive speed or in the event that the end of the base is elevated beyond a predetermined angle.
  • Gauge means are provided for indicating the rate at which fluid is dispensed.
  • FIG. 1 is a longitudinal sectional view of an apparatus embodying the invention.
  • FIG. 2 is a sectional view taken along the line 2-2 in FIG. I.
  • FIG. 3 is an end view of the apparatus shown in FIG. 1, taken from the right.
  • FIG. 4 is a fragmentary sectional view taken along the line 44 in FIG. 2.
  • FIG. 5 is a part sectional view of a portion of the apparatus.
  • FIG. 6 is a fragmentary partly diagrammatic view of a portion of the apparatus.
  • FIG. 7 is a fragmentary sectional view taken along the line 7-7 in FIG. 1.
  • FIG. 8 is a fragmentary transverse sectional view of a portion of the apparatus shown in FIG. 1.
  • the intravenous feeding apparatus embodying the invention comprises a base 10 that includes a bottom wall 11 and side walls 12.
  • the base is preferably made of a one piece aluminum extrusion.
  • Each side wall 12 includes an integral track portion 13 defining track surfaces l4, 15.
  • a drum 16 including end members 17 and a body 18 is rotatably mounted in tracks 13 by pins 18a in openings in rectangular slide blocks 19 of low friction material such as nylon.
  • a coiled constant tension spring 20 has one end thereof wrapped around the drum and the other end thereof clamped between a strip 21 and the bottom wall 11 of the base 10. Rivet assemblies 22 fix the plate in position.
  • a movable handle 24 extends between the slides 19 and is fixed thereto by pins. Handle 24 serves as a means for retracting the drum 16 against the action of the spring 20.
  • a latch 25 is pivoted to the bottom wall 11 at the end of the wall opposite the strip 21 and is yieldingly urged upwardly by helical torsion springs 26 at opposite ends thereof that function about pivot pins 27. In the solid line position shown in FIG. I, the latch 25 engages the handle 24 to prevent forward movement of the drum I6. By grasping the handle 24 and depressing the latch 25 by means of the fingers, the latch 25 will be moved out of the way of the handle 24 permitting the handle 24 and, in turn, the drum 16 to move forwardly.
  • rivet 22 are enlarged as at 28 for receiving holes in the tabs T of a collapsible plastic bag B such as is conventionally used for dispensing fluid, drugs and blood plasma.
  • the handle 24 is pulled backwardly to pull the drum against the action of the spring unwinding the spring, then depressing the latch until the latch 25 springs up into position forwardly of the handle 24 to hold the handle 24 and, in turn, the drum in rearward retracted position.
  • a fixed handle 39 is provided at the one end so that one hand can grasp fixed handle 39. and the other hand can grasp movable handle 24 for loading.
  • the plastic bag B is then placed in position with the openings therein engaging the enlargements 28.
  • the drum 16 rolls forwardly pulling the slides 19 along the tracks and causing the periphery of the convolutions of spring 20 to engage the bag and squeeze the bag to dispense its contents through the tube 0.
  • the rate at which the contents are dispensed is controlled by means of a manually operated clamp (not shown) such as is conventionally used.
  • each block 19 is provided as shown in FIG. 4 with an upwardly facing groove 30 that has an inclined surface 31.
  • Surface 31 is inclined upwardly and rearwardly with respect to the general movement of the drum 16 to dispense material.
  • a ball or roller 32 is positioned in each groove 30.
  • the elevation of the rear end of the base or even the suspending of the apparatus from the rear end of the base does not interfere in any way with the action of the apparatus.
  • indicator means are providedfor indicating the rate of dispensing.
  • a graduated scale 33 is provided on the upper surface of one wall 12 and comprises contrasting markings stripes 34 of equal width extending at an angle to the longitudinal and transverse axes.
  • An indicator 35 which is generally U-shaped is supported between a block 19 and handle 24 and comprises a horizontal portion 36 which overlies the scale 33. Portion 36 has markings 37.
  • the relative displacement of the scale and indicator causes the intersection" of the sloped lines on the scale and the perpendicular edge of the indicator to change and thus indicates displacement.
  • the graduations on the indicator can be numbered if desired as can those on the scale.
  • nAa The relationship of the stripes 34 and markings 37 can be represented by the expression nAa where The following example is given to indicate the application of the geometry described above to a particular problem. Say displacements of 0.010 inch A a) are to be observed with major increments of 0.100 inch (a) and n l0. Say the Ab (indicator graduation) is desired to be 0.05 inch for ease of observation with the naked eye (this corresponds to a magnification of 5).
  • the scale width (b) is:
  • handle 39 comprises an extrusion which includes portions 40 that slidingly engage the track portions 13. Pins 41 extend through the track portions 13 and portions 40 to hold the handle in position. The portion of the handle thus serves as a stop for the drum 16.
  • an adjustable stop 42 is provided along one of the track portions 13 and comprises a C-shaped clamp 43 slidably engaging the upper flange of the track.
  • a thumb screw 44 is threaded through the C-shaped clamp 43 and engages a pressure member 45 that is forced against the top of the channel 13.
  • the pressure member 45 has its ends turned upwardly as at 46 to retain the member 45 with relationship to the C-shaped clamp.
  • said drum having portions thereof engaging said track
  • a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended,
  • said drum having portions thereof engaging said track
  • a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended,
  • said drum having portions thereof engaging said track
  • a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended,
  • an intravenous feeding apparatus comprising a base including a bottom wall and integral side walls,
  • each said side wall having portions defining an inwardly facing track
  • an intravenous feeding apparatus comprising a base including a bottom wall and integral side walls,
  • each said side wall having portions defining an inwardly facing track
  • a constant tension spring having one end thereof fixed to said base, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to elevation of said one end of said base beyond the predetermined point to prevent movement of said drum toward said one end of said base.
  • each said side wall having portions defining an inwardly facing track
  • said roller being operable to move up said inclined surface upon acceleration of said drum beyond a certain rate to engage said track.
  • said drum having portions thereof engaging said track
  • said drum having portions thereof engaging said track

Abstract

An intravenous feeding device comprising a base, a drum movable along a track on said base and a constant tension coiled spring having one end thereof fixed to the drum and the other to the base so that when a collapsible container is positioned, the drum acts upon the collapsible container to dispense the contents of the container. A latch is provided for locking the drum with the spring in its extended position and acceleration and position responsive means are provided for locking the drum in the event that the drum is released during loading or in the event that the material is dispensed at excessive speed or in the event that one end of the base is elevated beyond a predetermined angle. Gauge means are provided for indicating the rate at which fluid is dispensed.

Description

United States Patent Hill 1 1 June 20, 1972 54] INTRAVENOUS FEEDING APPARATUS 3,259,276 7/1966 Chase ..222/100 [72] Inventor: Charles C. Hill, Ann Arbor, Mich. FQREIGN PATENTS OR APPLICATIONS 1 1 Assignw gg g ir ay Corporation. n 353,572 7/1931 Great Britain ..1 16/229 r, 1c 2 9 Primary Examiner-Robert B. Reeves [22] Filed Sept. 196 Assistant Examiner-James M. Slattery [21] Appl. No.: 857,151 Attomey-Bames, Kisselle, Raisch & Choate [52] US. Cl. ..222/47, 222/99, 222/101, [57] CT 222/95, 128/214 An intravenous feeding device comprising a base, a drum {5!} 1m, (I B67d 5/22 movable along a track on said base and a constant tension [58] Field 61 Search ..222/47, 99, 96, 100, 101, 95, coiled p ng having n n thereof fix t0 he drum and the 222/23; 128/214, 214.1; 116/129 AB other to the base so that when a collapsible container is positioned, the drum acts upon the collapsible container to 5 References cu dispense the contents of the container. A latch is provided for locking the drum with the spring 1n its extended position and UNITED STATES PATENTS acceleration and position responsive means are provided for locking the drum in the event that the drum is released during L616 10,1964 loading or in the event that the material is dispensed at exces- 2'198'666 4/1940 sive speed or in the event that one end of the base is elevated 15321297 4/1925 beyond a predetermined angle. Gauge means are provided for indicating the rate at which fluid is dispensed.
2,848,141 8/1958 lntagliata ..222/101 18 Claims, 8 Drawing figures PATENTEDJUHZO 1972 SHEET 10F 2 mu m T/ N M V. s @M M 5% w 4 m B M 907 AN MN \X L N PATENTEnJmo m2 SHEET 2 OF 2 FIG.5
/Z INVENTOR CHAPZZS C H/ZZ BY fi bILQQ/ ATTOR N EYS INTRAVENOUS FEEDING APPARATUS This invention relates to an intravenous feeding apparatus.
Among the objects of the invention are to provide an intravenous feeding apparatus which will effectively dispense fluids and drugs from a collapsible container through a tube for feeding a patient intravenously; which can be readily loaded; which is operable upon excessive acceleration or dispensing to lock and prevent further dispensing; and which is operable upon being moved to a position that might tend to cause air to move toward the patient to prevent further dispensing; which can be readily manufactured and serviced; and which requires a minimum of maintenance.
SUMMARY OF THE INVENTION An intravenous feeding device comprising a base, a drum movable along a track on said base and a constant tension coiled spring having one end thereof fixed to the drum and the other to the base so that when a collapsible container is positioned, the drum acts upon the collapsible container to dispense the contents of the container. A latch is provided for locking the drum with the spring in its extended position and acceleration and position responsive means are provided for locking the drum in the event that the material is dispensed at excessive speed or in the event that the end of the base is elevated beyond a predetermined angle. Gauge means are provided for indicating the rate at which fluid is dispensed.
DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view of an apparatus embodying the invention.
FIG. 2 is a sectional view taken along the line 2-2 in FIG. I.
FIG. 3 is an end view of the apparatus shown in FIG. 1, taken from the right.
FIG. 4 is a fragmentary sectional view taken along the line 44 in FIG. 2.
' FIG. 5 is a part sectional view of a portion of the apparatus.
FIG. 6 is a fragmentary partly diagrammatic view of a portion of the apparatus.
FIG. 7 is a fragmentary sectional view taken along the line 7-7 in FIG. 1.
FIG. 8 is a fragmentary transverse sectional view of a portion of the apparatus shown in FIG. 1.
DESCRIPTION Referring to FIGS. 1 and 2, the intravenous feeding apparatus embodying the invention comprises a base 10 that includes a bottom wall 11 and side walls 12. The base is preferably made of a one piece aluminum extrusion. Each side wall 12 includes an integral track portion 13 defining track surfaces l4, 15.
A drum 16 including end members 17 and a body 18 is rotatably mounted in tracks 13 by pins 18a in openings in rectangular slide blocks 19 of low friction material such as nylon. A coiled constant tension spring 20 has one end thereof wrapped around the drum and the other end thereof clamped between a strip 21 and the bottom wall 11 of the base 10. Rivet assemblies 22 fix the plate in position.
A movable handle 24 extends between the slides 19 and is fixed thereto by pins. Handle 24 serves as a means for retracting the drum 16 against the action of the spring 20. A latch 25 is pivoted to the bottom wall 11 at the end of the wall opposite the strip 21 and is yieldingly urged upwardly by helical torsion springs 26 at opposite ends thereof that function about pivot pins 27. In the solid line position shown in FIG. I, the latch 25 engages the handle 24 to prevent forward movement of the drum I6. By grasping the handle 24 and depressing the latch 25 by means of the fingers, the latch 25 will be moved out of the way of the handle 24 permitting the handle 24 and, in turn, the drum 16 to move forwardly.
The upper ends of rivet 22 are enlarged as at 28 for receiving holes in the tabs T of a collapsible plastic bag B such as is conventionally used for dispensing fluid, drugs and blood plasma.
In practice, the handle 24 is pulled backwardly to pull the drum against the action of the spring unwinding the spring, then depressing the latch until the latch 25 springs up into position forwardly of the handle 24 to hold the handle 24 and, in turn, the drum in rearward retracted position. A fixed handle 39 is provided at the one end so that one hand can grasp fixed handle 39. and the other hand can grasp movable handle 24 for loading.
The plastic bag B is then placed in position with the openings therein engaging the enlargements 28.
Upon gradual release of the handle 24 in the manner described above, the drum 16 rolls forwardly pulling the slides 19 along the tracks and causing the periphery of the convolutions of spring 20 to engage the bag and squeeze the bag to dispense its contents through the tube 0. The rate at which the contents are dispensed is controlled by means of a manually operated clamp (not shown) such as is conventionally used.
In order to prevent feeding or acceleration of the drum at an excessive rate, each block 19 is provided as shown in FIG. 4 with an upwardly facing groove 30 that has an inclined surface 31. Surface 31 is inclined upwardly and rearwardly with respect to the general movement of the drum 16 to dispense material. A ball or roller 32 is positioned in each groove 30.
In operation, nonnal forward movement of the slides 19 and in turn the drum 16 forwardly carries the ball 32 in the bottom of the groove 30. If, however, the slide moves for some reason at an excessive rate, such as may occur if inadvertently released without a bag in place or air bubbles or the like in the plastic bag, the inertia of the ball 32 will cause it to move less rapidly than the slide 19 thereby moving up the inclined surfaces 31 and jamming or wedging against the upper surface 15 of the track to lock the drum I6 against any further movement.
The same action will occur in the event that the forward end of the base 10 is elevated. This prevents any air bubbles in the bag from moving toward the outlet end of the bag which could be dangerous in the event that excessive air bubbles entered the patient.
On the other hand, the elevation of the rear end of the base or even the suspending of the apparatus from the rear end of the base does not interfere in any way with the action of the apparatus.
As shown in FIG. 6, indicator means are providedfor indicating the rate of dispensing. A graduated scale 33 is provided on the upper surface of one wall 12 and comprises contrasting markings stripes 34 of equal width extending at an angle to the longitudinal and transverse axes. An indicator 35, which is generally U-shaped is supported between a block 19 and handle 24 and comprises a horizontal portion 36 which overlies the scale 33. Portion 36 has markings 37.
The relative displacement of the scale and indicator causes the intersection" of the sloped lines on the scale and the perpendicular edge of the indicator to change and thus indicates displacement. The graduations on the indicator can be numbered if desired as can those on the scale.
The relationship of the stripes 34 and markings 37 can be represented by the expression nAa where The following example is given to indicate the application of the geometry described above to a particular problem. Say displacements of 0.010 inch A a) are to be observed with major increments of 0.100 inch (a) and n l0. Say the Ab (indicator graduation) is desired to be 0.05 inch for ease of observation with the naked eye (this corresponds to a magnification of 5). The scale width (b) is:
As shown in FIGS. 1 and 7, handle 39 comprises an extrusion which includes portions 40 that slidingly engage the track portions 13. Pins 41 extend through the track portions 13 and portions 40 to hold the handle in position. The portion of the handle thus serves as a stop for the drum 16.
In order to permit feeding of a predetermined quantity of liquid from the bag B, an adjustable stop 42 is provided along one of the track portions 13 and comprises a C-shaped clamp 43 slidably engaging the upper flange of the track. A thumb screw 44 is threaded through the C-shaped clamp 43 and engages a pressure member 45 that is forced against the top of the channel 13. The pressure member 45 has its ends turned upwardly as at 46 to retain the member 45 with relationship to the C-shaped clamp.
I claim:
1. In an intravenous feeding apparatus, the combination comprising a base,
means on said base defining a track,
a drum,
said drum having portions thereof engaging said track,
a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended,
means for releasing said locking means, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof,
means responsive to acceleration of said drum beyond a predetermined rate to lock said movement of said drum and thereby prevent further dispensing of the contents of a collapsible container in position.
2. In an intravenous feeding apparatus, the combination comprising a base,
means on said base defining a track,
a drum,
said drum having portions thereof engaging said track,
a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended,
means for releasing said locking means, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof,
means responsive to elevation of said one end of said base beyond the predetermined point to prevent movement of said drum toward said one end of said base.
3. In an intravenous feeding apparatus, the combination comprising a base,
means on said base defining a track,
a drum,
said drum having portions thereof engaging said track,
a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended,
means for releasing said locking means, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof,
means movable with said drum and responsive to the acceleration thereof and operable to engage said track when the acceleration exceeds a predetermined amount to thereby lock said drum to said track.
4. In an intravenous feeding apparatus, the combination comprising a base including a bottom wall and integral side walls,
each said side wall having portions defining an inwardly facing track,
low friction members slidable in said track,
a drum rotatably mounted on said members,
a constant tension spring having one end thereof fixed to said base,
whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof,
means responsive to movement of said drum beyond a predetermined rate to lock said movement of said drum and thereby prevent further dispensing of the contents of a flexible container in position or motion of the drum.
5. In an intravenous feeding apparatus, the combination comprising a base including a bottom wall and integral side walls,
each said side wall having portions defining an inwardly facing track,
low friction members slidable in said track,
a drum rotatably mounted on said members,
a constant tension spring having one end thereof fixed to said base, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to elevation of said one end of said base beyond the predetermined point to prevent movement of said drum toward said one end of said base. 6. In an intravenous feeding apparatus, the combination comprising a base including a bottom wall and integral side walls,
each said side wall having portions defining an inwardly facing track,
low friction members slidable in said track,
a drum rotatably mounted on said members,
a constant tension spring having one end thereof fixed to said base,
whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof,
means movable with said drum and responsive to the acceleration thereof and operable to engage said track when the acceleration exceeds a predetermined amount to thereby lock said drum to said track.
7. The combination set forth in claim 3 wherein said lastmentioned means comprises a member slidable in said track and having an upwardly and rearwardly inclined slot,
a roller in said slot,
said roller being operable to move up said inclined surface upon acceleration of said drum beyond a certain rate to engage said track.
8. The combination set forth in claim 7 wherein said member comprises a block of low friction material.
of said major increments is a multiple of said minor increments.
11. The combination set forth in claim 9 wherein said indicator is perpendicular to the longitudinal axis of said scale.
12. The combination set forth in claim 9 wherein said markings on said scale comprise contrasting stripes having a width equal to one said major increment.
13. The combination set forth in claim 9 wherein the angle which said markings of said scale make with a perpendicular to the longitudinal axis of said scale has the relationship of Major increment Least indicated increment The number of least indicated increments in a major increment nAa Observed intersection" movement for least indicated increment nAb Slope of major increment lines.
upon acceleration of said drum beyond a certain rate to engage said track.
17. in an intravenous feeding apparatus the combination comprising a base,
means on said base defining a track,
a drum,
said drum having portions thereof engaging said track,
a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base,
whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof,
means responsive to movement of said drum beyond a predetermined rate to lock said movement of said drum and thereby prevent further movement or dispensing of the contents of a flexible container in position.
18. In an intravenous feeding apparatus, the combination comprising a base,
means on said base defining a track,
a drum,
said drum having portions thereof engaging said track,
a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base,
whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to the position of said base operable to lock movement of the drum when the forward end of the base is elevated.

Claims (18)

1. In an intravenous feeding apparatus, the combination comprising a base, means on said base defining a track, a drum, said drum having portions thereof engaging said track, a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended, means for releasing said locking means, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to acceleration of said drum beyond a predetermined rate to lock said movement of said drum and thereby prevent further dispensing of the contents of a collapsible container in position.
2. In an intravenous feeding apparatus, the combination comprising a base, means on said base defining a track, a drum, said drum having portions thereof engaging said track, a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended, means for releasing said locking means, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to elevation of said one end of said base beyond the predetermined point to prevent movement of said drum toward said one end of said base.
3. In an intravenous feeding apparatus, the combinatioN comprising a base, means on said base defining a track, a drum, said drum having portions thereof engaging said track, a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, means at one end of said base for locking said drum in position with said spring extended, means for releasing said locking means, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means movable with said drum and responsive to the acceleration thereof and operable to engage said track when the acceleration exceeds a predetermined amount to thereby lock said drum to said track.
4. In an intravenous feeding apparatus, the combination comprising a base including a bottom wall and integral side walls, each said side wall having portions defining an inwardly facing track, low friction members slidable in said track, a drum rotatably mounted on said members, a constant tension spring having one end thereof fixed to said base, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to movement of said drum beyond a predetermined rate to lock said movement of said drum and thereby prevent further dispensing of the contents of a flexible container in position or motion of the drum.
5. In an intravenous feeding apparatus, the combination comprising a base including a bottom wall and integral side walls, each said side wall having portions defining an inwardly facing track, low friction members slidable in said track, a drum rotatably mounted on said members, a constant tension spring having one end thereof fixed to said base, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to elevation of said one end of said base beyond the predetermined point to prevent movement of said drum toward said one end of said base.
6. In an intravenous feeding apparatus, the combination comprising a base including a bottom wall and integral side walls, each said side wall having portions defining an inwardly facing track, low friction members slidable in said track, a drum rotatably mounted on said members, a constant tension spring having one end thereof fixed to said base, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means movable with said drum and responsive to the acceleration thereof and operable to engage said track when the acceleration exceeds a predetermined amount to thereby lock said drum to said track.
7. The combination set forth in claim 3 wherein said last-mentioned means comprises a member slidable in said track and having an upwardly and rearwardly inclined slot, a roller in said slot, said roller being operable to move up said inclined surface upon acceleration of said drum beyond a certain rate to engage said track.
8. The combination set forth in claim 7 wherein said member comprises a block of low friction material.
9. The combination set forth in claim 1 including a scale extending longitudinally along said base, said scale including a plurality of markings thereon, said markings extending at an angle to a perpendicular to the longitudinal axis of said scale and comprising equally spaced major increments, and an indicator movable with said drum extending transversely of said scale and comprising a plurality of markings spaced at minor increments thereon.
10. The combination set forth in claim 9 wherein the width of said major incremEnts is a multiple of said minor increments.
11. The combination set forth in claim 9 wherein said indicator is perpendicular to the longitudinal axis of said scale.
12. The combination set forth in claim 9 wherein said markings on said scale comprise contrasting stripes having a width equal to one said major increment.
13. The combination set forth in claim 9 wherein the angle which said markings of said scale make with a perpendicular to the longitudinal axis of said scale has the relationship of where a Major increment Delta a Least indicated increment n The number of least indicated increments in a major increment a n Delta a Delta b Observed ''''intersection'''' movement for least indicated increment b n Delta b Alpha Slope of major increment lines.
14. The combination set forth in claim 9 wherein said indicator overlies said scale.
15. The combination set forth in claim 9 wherein said indicator is mounted on a member slidable in the track with the drum.
16. The combination set forth in claim 6 wherein said last-mentioned means comprises an upwardly and forwardly inclined slot in said member slidable in said track, a roller in said slot, said roller being operable to move up said inclined surface upon acceleration of said drum beyond a certain rate to engage said track.
17. In an intravenous feeding apparatus, the combination comprising a base, means on said base defining a track, a drum, said drum having portions thereof engaging said track, a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to movement of said drum beyond a predetermined rate to lock said movement of said drum and thereby prevent further movement or dispensing of the contents of a flexible container in position.
18. In an intravenous feeding apparatus, the combination comprising a base, means on said base defining a track, a drum, said drum having portions thereof engaging said track, a constant tension spring having one end thereof connected to said drum and the other end thereof fixed to said base, whereby a collapsible container interposed between said drum and said base is progressively squeezed by the convolutions of said spring to dispense the contents thereof, means responsive to the position of said base operable to lock movement of the drum when the forward end of the base is elevated.
US857151A 1969-09-11 1969-09-11 Intravenous feeding apparatus Expired - Lifetime US3670926A (en)

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Cited By (36)

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US4381006A (en) * 1980-11-10 1983-04-26 Abbott Laboratories Continuous low flow rate fluid dispenser
US4382753A (en) * 1979-03-09 1983-05-10 Avi, Inc. Nonpulsating IV pump and disposable pump chamber
US4391600A (en) * 1979-03-09 1983-07-05 Avi, Inc. Nonpulsating IV pump and disposable pump chamber
US4410322A (en) * 1979-03-09 1983-10-18 Avi, Inc. Nonpulsating TV pump and disposable pump chamber
US4413988A (en) * 1982-04-28 1983-11-08 Handt Alan E Short-tubing set gravity powered peritoneal cycler
US4470520A (en) * 1979-01-12 1984-09-11 Corning Glass Works Storage and dispensing of blood gas quality control reagent from a pressurized container
FR2561923A1 (en) * 1982-05-21 1985-10-04 Repro Med Systems Inc LIQUID DISTRIBUTOR DEVICE ACTUATED BY A SPRING
US4636197A (en) * 1985-02-15 1987-01-13 Ping Chu Intravenous fluid infusion device
EP0248538A1 (en) * 1986-05-06 1987-12-09 David P. Colvin Improved infusion method and means
US4741736A (en) * 1986-12-10 1988-05-03 I-Flow Corporation Programmable infusion pump
US4765512A (en) * 1979-05-22 1988-08-23 Bull Jr Glen C Self-dispensing spring biased thin film container
US4842576A (en) * 1986-10-15 1989-06-27 Baxter International Inc. System for generating substantially constant fluid pressure
US4850971A (en) * 1986-05-06 1989-07-25 Triangle Research And Development Corporation Infusion method and means
US4857048A (en) * 1987-05-29 1989-08-15 Hewlett-Packard Company IV pump and disposable flow chamber with flow control
US4911703A (en) * 1986-10-15 1990-03-27 Baxter International Inc. Mobile, self-contained blood collection system and method
US5154704A (en) * 1990-10-31 1992-10-13 Kent Archibald G IV clamp with tube clip
US5211626A (en) * 1987-05-01 1993-05-18 Product Innovation Holdings Ltd. Medical infusion apparatus
US5232437A (en) * 1986-10-15 1993-08-03 Baxter International Inc. Mobile, self-contained blood collection system and method
US5320503A (en) * 1988-05-17 1994-06-14 Patient Solutions Inc. Infusion device with disposable elements
US5330431A (en) * 1993-03-12 1994-07-19 Glenn Herskowitz Infusion pump
WO1995004561A1 (en) * 1993-08-06 1995-02-16 The Spring Consortium Limited Apparatus for varying the quantity of contents in a receptacle
US5421486A (en) * 1994-07-22 1995-06-06 Simmons; J. V. Apparatus for dispensing flowable products from tube-type containers
US5584667A (en) * 1988-05-17 1996-12-17 Davis; David L. Method of providing uniform flow from an infusion device
US5803712A (en) * 1988-05-17 1998-09-08 Patient Solutions, Inc. Method of measuring an occlusion in an infusion device with disposable elements
US5911716A (en) * 1992-01-24 1999-06-15 I-Flow Corporation Platen pump
US6074366A (en) * 1998-01-16 2000-06-13 Tandem Medical Inc. Medication delivery apparatus
US6251098B1 (en) 1992-01-24 2001-06-26 I-Flow, Corp. Fluid container for use with platen pump
US6358239B1 (en) 1992-01-24 2002-03-19 I-Flow Corporation Platen pump
US6726655B1 (en) 1999-11-05 2004-04-27 Tandem Medical Medication delivery system
FR2887458A1 (en) * 2005-06-28 2006-12-29 Michel Boisson Physiological solution e.g. nutrient solution, perfusion device for use in e.g. hospital environment, has unit exerting pressure on pouch and comprising extension spring body that permits to exert constant force to squeezing drum and case
US20080215029A1 (en) * 1993-01-22 2008-09-04 I-Flow Corporation Platen pump
US20100108717A1 (en) * 2007-05-07 2010-05-06 Marek Szymanski Liquid dispensing apparatus
US20100137832A1 (en) * 2008-11-25 2010-06-03 Meridian Medical Technologies, Inc. Auto-Injector Apparatus
WO2016192728A1 (en) * 2014-11-26 2016-12-08 Ahmed Abdullah Hessam Iv bag pump
US20170087856A1 (en) * 2015-09-30 2017-03-30 Brother Kogyo Kabushiki Kaisha Cartridge case
USD847209S1 (en) 2018-01-26 2019-04-30 Osaa Innovation Aps Bag pump

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Cited By (52)

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Publication number Priority date Publication date Assignee Title
US4470520A (en) * 1979-01-12 1984-09-11 Corning Glass Works Storage and dispensing of blood gas quality control reagent from a pressurized container
US4382753A (en) * 1979-03-09 1983-05-10 Avi, Inc. Nonpulsating IV pump and disposable pump chamber
US4391600A (en) * 1979-03-09 1983-07-05 Avi, Inc. Nonpulsating IV pump and disposable pump chamber
US4410322A (en) * 1979-03-09 1983-10-18 Avi, Inc. Nonpulsating TV pump and disposable pump chamber
US4765512A (en) * 1979-05-22 1988-08-23 Bull Jr Glen C Self-dispensing spring biased thin film container
US4381006A (en) * 1980-11-10 1983-04-26 Abbott Laboratories Continuous low flow rate fluid dispenser
US4413988A (en) * 1982-04-28 1983-11-08 Handt Alan E Short-tubing set gravity powered peritoneal cycler
FR2561923A1 (en) * 1982-05-21 1985-10-04 Repro Med Systems Inc LIQUID DISTRIBUTOR DEVICE ACTUATED BY A SPRING
US4636197A (en) * 1985-02-15 1987-01-13 Ping Chu Intravenous fluid infusion device
US4850971A (en) * 1986-05-06 1989-07-25 Triangle Research And Development Corporation Infusion method and means
EP0248538A1 (en) * 1986-05-06 1987-12-09 David P. Colvin Improved infusion method and means
US5232437A (en) * 1986-10-15 1993-08-03 Baxter International Inc. Mobile, self-contained blood collection system and method
US4842576A (en) * 1986-10-15 1989-06-27 Baxter International Inc. System for generating substantially constant fluid pressure
US4911703A (en) * 1986-10-15 1990-03-27 Baxter International Inc. Mobile, self-contained blood collection system and method
US4741736A (en) * 1986-12-10 1988-05-03 I-Flow Corporation Programmable infusion pump
US5211626A (en) * 1987-05-01 1993-05-18 Product Innovation Holdings Ltd. Medical infusion apparatus
US4857048A (en) * 1987-05-29 1989-08-15 Hewlett-Packard Company IV pump and disposable flow chamber with flow control
US5320503A (en) * 1988-05-17 1994-06-14 Patient Solutions Inc. Infusion device with disposable elements
US20080015506A1 (en) * 1988-05-17 2008-01-17 Davis David L Infusion device with disposable elements
US6146109A (en) * 1988-05-17 2000-11-14 Alaris Medical Systems, Inc. Infusion device with disposable elements
US20050013698A1 (en) * 1988-05-17 2005-01-20 Davis David Lyle Infusion device with disposable elements
US5584667A (en) * 1988-05-17 1996-12-17 Davis; David L. Method of providing uniform flow from an infusion device
US5803712A (en) * 1988-05-17 1998-09-08 Patient Solutions, Inc. Method of measuring an occlusion in an infusion device with disposable elements
US6742992B2 (en) 1988-05-17 2004-06-01 I-Flow Corporation Infusion device with disposable elements
US6312227B1 (en) 1988-05-17 2001-11-06 I-Flow Corp. Infusion device with disposable elements
US5154704A (en) * 1990-10-31 1992-10-13 Kent Archibald G IV clamp with tube clip
US7083068B2 (en) 1992-01-24 2006-08-01 I-Flow Corporation Platen pump
US5911716A (en) * 1992-01-24 1999-06-15 I-Flow Corporation Platen pump
US6251098B1 (en) 1992-01-24 2001-06-26 I-Flow, Corp. Fluid container for use with platen pump
US7337922B2 (en) 1992-01-24 2008-03-04 I-Flow Corporation Platen pump
US6358239B1 (en) 1992-01-24 2002-03-19 I-Flow Corporation Platen pump
US20050211725A1 (en) * 1992-01-24 2005-09-29 Rake Kenneth W Platen pump
US6871759B2 (en) 1992-01-24 2005-03-29 I-Flow Corporation Platen pump
US20040108333A1 (en) * 1992-01-24 2004-06-10 Rake Kenneth W. Platen pump
US20080215029A1 (en) * 1993-01-22 2008-09-04 I-Flow Corporation Platen pump
US5330431A (en) * 1993-03-12 1994-07-19 Glenn Herskowitz Infusion pump
WO1995004561A1 (en) * 1993-08-06 1995-02-16 The Spring Consortium Limited Apparatus for varying the quantity of contents in a receptacle
US5421486A (en) * 1994-07-22 1995-06-06 Simmons; J. V. Apparatus for dispensing flowable products from tube-type containers
US6416496B1 (en) 1998-01-16 2002-07-09 Tandem Medical, Inc. Medication delivery apparatus
US6146360A (en) * 1998-01-16 2000-11-14 Tandem Medical, Inc. Medication delivery apparatus
US6074366A (en) * 1998-01-16 2000-06-13 Tandem Medical Inc. Medication delivery apparatus
US6726655B1 (en) 1999-11-05 2004-04-27 Tandem Medical Medication delivery system
FR2887458A1 (en) * 2005-06-28 2006-12-29 Michel Boisson Physiological solution e.g. nutrient solution, perfusion device for use in e.g. hospital environment, has unit exerting pressure on pouch and comprising extension spring body that permits to exert constant force to squeezing drum and case
US20100108717A1 (en) * 2007-05-07 2010-05-06 Marek Szymanski Liquid dispensing apparatus
US8550301B2 (en) * 2007-05-07 2013-10-08 Marek Szymanski Liquid dispensing apparatus
US20100137832A1 (en) * 2008-11-25 2010-06-03 Meridian Medical Technologies, Inc. Auto-Injector Apparatus
US20100137808A1 (en) * 2008-11-25 2010-06-03 Meridian Medical Technologies, Inc. Cartridge For Auto-Injector Apparatus
US8690836B2 (en) 2008-11-25 2014-04-08 Meridian Medical Technologies, Inc. Auto-injector apparatus
WO2016192728A1 (en) * 2014-11-26 2016-12-08 Ahmed Abdullah Hessam Iv bag pump
US20170087856A1 (en) * 2015-09-30 2017-03-30 Brother Kogyo Kabushiki Kaisha Cartridge case
US9862197B2 (en) * 2015-09-30 2018-01-09 Brother Kogyo Kabushiki Kaisha Cartridge case
USD847209S1 (en) 2018-01-26 2019-04-30 Osaa Innovation Aps Bag pump

Also Published As

Publication number Publication date
NL7013427A (en) 1971-03-15
JPS507875B1 (en) 1975-03-29

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