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GB2376191A - A portable venal pump activator - Google Patents

A portable venal pump activator Download PDF

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Publication number
GB2376191A
GB2376191A GB0113935A GB0113935A GB2376191A GB 2376191 A GB2376191 A GB 2376191A GB 0113935 A GB0113935 A GB 0113935A GB 0113935 A GB0113935 A GB 0113935A GB 2376191 A GB2376191 A GB 2376191A
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GB
Grant status
Application
Patent type
Prior art keywords
plate
bearing
base
exercise
device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB0113935A
Other versions
GB0113935D0 (en )
Inventor
Francis Michael Russell
Original Assignee
Francis Michael Russell
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B23/00Exercising apparatus specially adapted for particular parts of the body
    • A63B23/035Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously
    • A63B23/04Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs
    • A63B23/08Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs for ankle joints
    • A63B23/085Exercising apparatus specially adapted for particular parts of the body for limbs, i.e. upper or lower limbs, e.g. simultaneously for lower limbs for ankle joints by rotational movement of the joint in a plane substantially parallel to the body-symmetrical-plane
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61HPHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
    • A61H2209/00Devices for avoiding blood stagnation, e.g. Deep Vein Thrombosis [DVT] devices
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B21/00Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices
    • A63B21/012Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using frictional force-resisters
    • A63B21/015Exercising apparatus for developing or strengthening the muscles or joints of the body by working against a counterforce, with or without measuring devices using frictional force-resisters including rotating or oscillating elements rubbing against fixed elements
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2208/00Characteristics or parameters related to the user or player
    • A63B2208/02Characteristics or parameters related to the user or player posture
    • A63B2208/0228Sitting on the buttocks
    • A63B2208/0233Sitting on the buttocks in 90/90 position, like on a chair
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/17Counting, e.g. counting periodical movements, revolutions or cycles, or including further data processing to determine distances or speed
    • AHUMAN NECESSITIES
    • A63SPORTS; GAMES; AMUSEMENTS
    • A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B2220/00Measuring of physical parameters relating to sporting activity
    • A63B2220/30Speed
    • A63B2220/34Angular speed

Abstract

A device to exercise the lower legs of a seated user comprises a plate 2 mounted on a base 1 and a bearing 3, such that in use, the feet can be placed on the plate and cause the plate to rock about a bearing 3 providing the exercise. The feet may be positioned on the plate 2 with the heels touching a raised lip 17 at the rear edge of the plate so that the bearing 3, ankle and knee joints lie in a plane when the feet are in their un-flexed middle position. The bearing may be formed of an inner member (24 figure 3) and surrounding pads (25) of high friction material, such that the pads (25) can be pressed against the inner member (24) by a predetermined amount using an adjustment knob (14) to provide a resistance force against which exercise is performed. The device may be provided with pivoting struts 4 and guide 9 with a releasable stop 11 so that the height of the plate above the base can be adjusted. The device may be attached to a travel bag.

Description

<Desc/Clms Page number 1>

A portable venal pump activator.

This invention relates to a machine to exercise the skeletal muscles of the lower legs to drive the venal peristaltic pumps of a person when seated.

It is well known that immobility of people in a seated position for prolonged periods of time increases the risk of deep vein thrombosis (DVT) in the legs due to slow or reduced flow of blood through the veins. DVT is a serious risk for people undertaking medium to long-haul flights and, to a lesser degree, in other situations where immobility may last as short as four hours.

Walking minimises the risk of developing a DVT. This is due to the pumping action of the venal peristaltic pumps in the legs, which are driven by the periodic contraction and relaxation of the skeletal muscles of the lower legs during walking. The work done in walking also causes a rise in pulse rate, which increases the venal blood flow in the legs.

However, walking is a restricted option for travellers on aircraft due to the lack of available space and possible inconvenience to both airline staff and other passengers. Unfortunately, slow walking with small steps only poorly activates the peristaltic pumps.

What is required is a compact, lightweight device that enables a seated person to activate strongly the peristaltic pumps in the legs for extended periods of time without creating a hazard or nuisance to others.

One approach in the prior art relating to this problem uses inflatable plastic bags that are placed on the floor directly in front of the seat. The feet are placed on these bags and a regime of stepping is commenced. The effectiveness of this approach in minimising DVT is arbitrary as there is no internal monitoring of the performance of the device. Such bags can easily move on the floor to create a potential risk to the free and safe movement of other passengers in the confined space of aircraft cabins. Moreover, the pronounced movement of the legs caused by the stepping action, and the reaction to this motion that occurs in the seat, is a potential source of annoyance to nearby passengers.

The present invention meets the requirements stated above and avoids the limitations of the airbag approach. In use it both activates the peristaltic pumps in the lower legs and increases blood flow by raising the pulse rate. The present invention consists of a plate, on which the feet are placed side by side, that can be rocked relative to a base. This plate rocks about an axis parallel to a line passing through both ankles. In operation the feet create torque that rotates the plate on a dissipative bearing mounted on the plate, causing work to be done. This bearing consists of a cylindrical rod attached to the base, surrounded by a material of high coefficient of friction that is bonded to the plate. The rocking motion of the feet on the plate mimics the muscular actions of walking, thereby driving the peristaltic pumps in the lower legs. An increase in the pulse rate results from the work done in rocking the plate.

A raised lip on the rear edge of the plate locates the ankles relative to the dissipative bearing such that the bearing, ankles and knees lie in a plane when the feet are in their un-flexed middle position. When the feet are flexed the ankles move short distances alternately forward and then backward in circular arcs centred on the bearing, which results in minimal vertical motion of the knees. Moreover, as both feet move in unison there is no differential motion of the knees, which would be more noticeable, thereby minimising possible visual annoyance to nearby persons. This minimal movement of the knees causes negligible vibration of the seat that might otherwise be a source of annoyance to a person sitting on a connected seat structure.

<Desc/Clms Page number 2>

For efficient operation of the venal peristaltic pumps the skeletal muscles of the lower legs must be adequately exercised, which requires that two conditions be met. Firstly, the feet must be flexed strongly, especially in the forward direction. To ensure correct flexure is achieved in operation a detector is imbedded in the device that gives a visual signal when a preset flexure is reached. Secondly, via the feet the skeletal muscles must do work against a resisting force arising from the dissipative bearing. To maintain the designed stiffness of the dissipative bearing and to <img class="EMIRef" id="024175087-00020001" />

compensate for any wear in the bearing means is provided to adjust the stiffness. This control of stiffness allows it to be adjusted as desired to meet persona needs. Means is provided for a visual output signal when the stiffness is set to the designed value.

As one application of the present invention is for use in aircraft cabins the device must be of low weight and compact. It can be used as a stand-alone item or when attached to a bag of total size such that it can be stored temporarily under the seat in front or when permanently incorporated into the seat as a foot rest when not is use. Also, for physiological reasons to do with avoiding excessive stress to the knees when the legs are bent at nearly a right angle, the device should be operated with the rocking plate as low as possible to the floor. The present invention meets these requirements. Moreover, it is provided with means for adjusting the angle of the base relative to the floor so that the device can be used in any location from directly in front of the seat, with the legs bent, to under the seat in front, with the legs nearly straight.

One embodiment of the present invention is now described by way of example with reference to the accompanying drawings in which :- Figure 1 shows in perspective the device with the rocker plate raised in an operational position; Figure 2 shows in perspective the rear of the device when closed; and Figure 3 is a cross-section through the dissipative bearing.

Referring to Figure 1 the device consists of a base 1 that supports the rocker plate 2 with the dissipative bearing assembly 3 attached to the bottom of the plate 2. The outer member of this bearing is fixed to the plate 2 and the inner member is fixed at both ends by means of struts 4 and 5 to the base. The struts 4 are attached to the base by the pivots 6. The struts 5 are attached to the inner member of the bearing by pivots 7 and to the base 1 by a rod 8 that can slide in the guide ways 9. The rod 8 moves freely in the guide ways as the plate 1 is pulled up, by means of the inset handle 10, from its closed position near the base. The guide ways 9 are provided with stops that securely locate the rod 8 to support the plate 2 in either fully open or half way open positions.

The push button 11 operates a mechanism that allows the rod 8 to be released from the stops so the plate 2 can be raised, lowered or closed on the base 1. To prepare the device for use a switch 12 on the central instrument panel 13 is closed to activate the electronics. The knob 14 then is rotated to adjust the stiffness of the bearing 3. At the design stiffness the plate 2 just does not move as the spring loaded button 15 moves downward to close an electrical switch, which briefly activates the light 16 on the central instrument panel 13. With the base 1 resting on the floor and the plate 2 in either the half way or fully open positions the feet are placed on the plate 2 with the heels just touching the lip 17. The plate 2 then is rocked forward and backward on the bearing 3 by the feet. To ensure the correct motion of the feet in operation a switch 18 mounted on the underside of the plate 2 closes when the front edge the plate 2 just touches the base 1.

Closure of the switch 18 sends a signal to an electronic monitoring system under the panel 13, which creates a digital output on the liquid crystal display 19. The number of closures of switch <RTI>18 since the power switch 12 was switched on is used to calculate the equivalent distance walked and the frequency of closure is used to calculate the rate of doing work. When the exercise</RTI>

<Desc/Clms Page number 3>

programme is completed the button 11 is held in as the plate 2 is closed on to the base I and then the power switch 12 is turned off.

If the device is used in a forward position from the passenger seat then the adjustable bar 19 in Figure 2 can be swung down so as to raise the front edge of the base 1 from the floor and so tilt the base 1 backwards. This compensates for the change in the angle of the legs when the device is used in a forward position. To resist slipping of the device on the floor soft rubber pads 20 are mounted at the comers of the base 1. Also shown in Figure 2 are four slots 21 in the base 1 through which straps 22 can be passed for holding or mounting the device on the side of a travel bag for convenience of transport. Alternatively, the device can be attached to a travel bag or case by means of Velcro pads 29.

Figure 3 shows a cross-section through the dissipative bearing, which is mounted on the underneath of the plate 2. The inner member 24 of the bearing presses against the surrounding material 25 of high coefficient of friction. This material is bonded to the underside of plate 2 and the top of the sub-plate 26, which extends nearly the full width of the plate 2. The sub-plate 26 is attached to the plate 2 by means of formed clips 27 which act as a pivot and locate the sub-plate 26 relative to the plate 2. Turning the knob 14 with the attached screw changes the distance between the sub-plate 26 and the plate 2, which changes the pressure applied to the bearing material 25. Changes in this applied pressure change the stiffness of the bearing. The top face of the plate 2 is covered with a non-slip sheet 28 of foam-backed material for both comfort and safety.

Claims (12)

1. A machine to exercise the skeletal muscles of the lower legs to drive the venal peristaltic pumps of a person when seated comprising a plate mounted on a bearing that is attached to a static base, the <RTI>piate</RTI> being cyciicaiiy rocked on the bearing by the <RTI>person's feei posiiioned side</RTI> by side on the plate with the heels touching a raised lip at the rear edge so positioned that the bearing, ankle and knee joints lie in a plane when the feet are in their un-flexed middle position.
2. A machine to exercise the skeletal muscles as claimed in Claim 1 where the bearing consists of a cylindrical rod extending the width of the plate that is attached to the base, surrounded by a material of high coefficient of friction that is bonded to the plate.
3. A machine to exercise the skeletal muscles as claimed in Claim 1 and Claim 2 where struts fixed to the ends of the inner member of the bearing are attached to the base by pivots so that the plate can be moved relative to the base.
4. A machine to exercise the skeletal muscles as claimed in Claims 1 to 3 where struts are attached to the ends of the bearing by pivots with the other ends of the struts moving in guideways attached to the base, with provision to lock the struts in the guide-ways to fix the position of the bearing relative to the base.
5. A machine to exercise the skeletal muscles as claimed in Claims I to 4 with means to adjust the stiffness of the bearing so that it can be reset to a predetermined value.
6. A machine to exercise the skeletal muscles as claimed in Claims I to 5 where a bar attached to the bottom of the base by pivots at both ends can be lowered to tilt the base backwards when placed on the floor.
7. A machine to exercise the skeletal muscles as claimed in Claims 1 to 6 where means is provided to detect the forward rotation of the plate to a predetermined position and give a visible confirmatory signal.
8. A machine to exercise the skeletal muscles as claimed in Claims 1 to 7 where means is provided to compute both the equivalent distance walked from the accumulated number of forward rotations of the plate and the actual amount of work expended in the exercise.
9. A machine to exercise the skeletal muscles as claimed in Claims 1 to 8 wherein means is provided to attach the machine to a bag by straps passing through attachments fitted to the base or by Velcro pads.
10. A machine to exercise the skeletal muscles as claimed in Claims 1 to 8, which is permanently incorporated into one side of a travel bag.
11. A machine to exercise the skeletal muscles as claimed in Claims 1, 2,5, 7 and 8 wherein said machine forms part of a chair or cabin seat and can also be used as a footrest.
12. A machine to exercise the skeletal muscles substantially as described herein with reference to Figures 1 to 3 of the accompanying drawing.
GB0113935A 2001-06-08 2001-06-08 A portable venal pump activator Withdrawn GB0113935D0 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0113935A GB0113935D0 (en) 2001-06-08 2001-06-08 A portable venal pump activator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0113935A GB0113935D0 (en) 2001-06-08 2001-06-08 A portable venal pump activator

Publications (2)

Publication Number Publication Date
GB0113935D0 GB0113935D0 (en) 2001-08-01
GB2376191A true true GB2376191A (en) 2002-12-11

Family

ID=9916153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0113935A Withdrawn GB0113935D0 (en) 2001-06-08 2001-06-08 A portable venal pump activator

Country Status (1)

Country Link
GB (1) GB0113935D0 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295847A (en) * 1964-07-07 1967-01-03 Sr Albert R Matt Exercising device
US4422635A (en) * 1982-01-27 1983-12-27 Herod James V Portable multiple use exerciser
US4501421A (en) * 1982-08-18 1985-02-26 Kane James G Foot and leg exercising device
US5433684A (en) * 1994-05-02 1995-07-18 Carrillo; Adrian P. Calf workout devices
DE29808202U1 (en) * 1997-05-17 1998-11-05 Beyer Gerhard footrest
US5851166A (en) * 1995-07-31 1998-12-22 Bernardson; Peter S. Lower extremity rehabilitation and toning exercise apparatus and method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295847A (en) * 1964-07-07 1967-01-03 Sr Albert R Matt Exercising device
US4422635A (en) * 1982-01-27 1983-12-27 Herod James V Portable multiple use exerciser
US4501421A (en) * 1982-08-18 1985-02-26 Kane James G Foot and leg exercising device
US5433684A (en) * 1994-05-02 1995-07-18 Carrillo; Adrian P. Calf workout devices
US5851166A (en) * 1995-07-31 1998-12-22 Bernardson; Peter S. Lower extremity rehabilitation and toning exercise apparatus and method
DE29808202U1 (en) * 1997-05-17 1998-11-05 Beyer Gerhard footrest

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Publication number Publication date Type
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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)