U.S. patent number 3,774,598 [Application Number 05/099,843] was granted by the patent office on 1973-11-27 for orthopedic exerciser.
This patent grant is currently assigned to SAID Wilson, by said Morgan. Invention is credited to William L. Morgan, Donald R. Wilson.
United States Patent |
3,774,598 |
Wilson , et al. |
November 27, 1973 |
ORTHOPEDIC EXERCISER
Abstract
A device for applying successive blows to joints of the human
body and particularly the food for orthopedic purposes. The device
has spring driven reciprocating pistons with control over the rate
and quantity of energy released per blow and the rapidity of piston
operation.
Inventors: |
Wilson; Donald R. (Stockton,
CA), Morgan; William L. (Redwood City, CA) |
Assignee: |
SAID Wilson, by said Morgan
(Stockton, CA)
|
Family
ID: |
26796539 |
Appl.
No.: |
05/099,843 |
Filed: |
December 21, 1970 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
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700490 |
Jan 25, 1968 |
3548811 |
|
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Current U.S.
Class: |
601/27; 601/104;
601/108 |
Current CPC
Class: |
A61H
1/006 (20130101) |
Current International
Class: |
A61H
1/00 (20060101); A61h 007/00 () |
Field of
Search: |
;128/25B,26,55,51,52,64 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Trapp; Lawrence W.
Parent Case Text
This a continuation-in-part of U.S. patent application Ser. No.
700,490, filed in the U.S. Patent Office on Jan. 25, 1968 for "Leg
Stimulator and Exerciser" and now U.S. Pat. No. 3,548,811.
Claims
What is claimed is:
1. An orthopedic exercising device comprising a housing having an
opening in the front thereof, a casing having a resilient top
within said housing with the top of the casing disposed at the
bottom of said housing opening, means mounting said casing in said
housing for adjustable tilting of the casing laterally of the
housing opening, and drive means in said casing including a pair of
striking members spaced longitudinally of the casing from the
housing opening and mounted for reciprocation to successively
strike the underside of the casing top for applying blows to the
bottom of a foot placed on the top of the casing in the
housing.
2. The device of claim 1 further defined by adjustable tilting
means disposed between said casing and said housing at the opposite
end of said housing from the opening in the front thereof, said
tilting means having an adjustable length and engaging both said
casing and said housing whereby said casing is longitudinally
adjustable as to inclination with respect to said housing.
3. An orthopedic exerciser having a casing thereabout and
comprising
a flexible resilient cover over an open top of said casing,
a pair of reciprocally mounted pistons within said casing,
a pair of striking members mounted one on each of said pistons
beneath said cover,
a pair of springs disposed one beneath each piston and compressed
between the piston and an end plate,
drive means, and
camming means rotated by said drive means and disposed to engage
said pistons to alternately move said pistons away from said cover
to compress said springs and to release said pistons,
whereby said striking members alternately strike the underside of
said cover.
4. The exerciser of claim 3 further defined by said end plates
being adjustably mounted for controlled movement toward and away
from said pistons to thereby control the amount of energy stored in
said springs upon each rotation of said camming means.
5. The exerciser of claim 3 further defined by each of said pistons
being mounted in sealing relation to piston chambers for movement
therein, a control valve connected to each of said piston chambers
atop same, and means controlling each of said valves for adjusting
the rate of air exit from said piston chambers as the piston
thereof is driven upwardly therein by the piston spring.
6. The exerciser of claim 3 further defined by each of siad pistons
being reciprocally mounted in sealing relation to a piston
chamber,
valving means communicating with said chambers above said pistons
therein for inlet of air to the chambers and controlled outlet of
air from the chambers for establishing the rate of energy release
stored in said springs, and
means adjusting the position of said end plates to thereby control
the amount of energy stored in said springs for each operation of
said camming means.
7. The exerciser of claim 6 further defined by means controlling
the speed of said drive means for adjusting the repetition rate of
said striking members engaging said cover.
Description
BACKGROUND OF THE INVENTION
In the field of orthopedics it has been determined that bone growth
is stimulated by the application of pressure and particularly
successive applications of pressure as in the form of blows. This
is particularly useful in the treatment of underdeveloped heels,
for example, as occur in sufferers of cerebral palsy and also in
hastening the mending of bone fractures.
It has been proposed to apply successive blows to the human body
particularly at joints thereof by the use of suspended sandbags
swung to and fro. Although very promising results have been
obtained in this manner, it is believed evident that such a
procedure is at best a rather primitive approach to the application
of pressure or force. It is furthermore noted that in the
application of blows to the body as at joints thereof for
orthopedic purposes, it is necessary to carefully limit the force
of the blows and it has been determined to be highly advantageous
to be able to control the repetition rate.
The present invention provides an extensive control over the
application of force in blows applied to the body for orthopedic
purposes. In accordance herewith the blows applied, for example, to
the heel and foot are controlled as to the rate of release of
energy, the quantity of energy released in each blow, and the speed
of repetition of blows.
SUMMARY OF INVENTION
The invention may be employed for the application of blows to any
desired portion of the human body and particularly the joints
hereof but is hereinafter described with respect to operations upon
the human foot. The invention is preferably comprised as a small
portable unit upon which a foot is placed and strapped so that the
operating surface of the unit engages the sole of the foot.
Provision is made for adjusting the position of this operating
surface so that the device may be employed by a person sitting in a
chair, for example, or lying in bed. Furthermore it may be employed
by a person lying on their side, for example. In this respect it is
particularly noted that the invention is adapted for use in
hospitals by bed-ridden patients and in many instances such
patients may be forced to lie on their side rather than on their
back. The invention is readily applicable for use with patients in
substantially any position.
The invention provides a pair of reciprocally mounted pistons
disposed in separate airtight chambers and each having enlarged
striking means extending from the pistons for forcibly engaging the
underside of a resilient cover forming the operating surface of the
invention. Each of the pistons is spring actuated with camming
means operating the spring and a small electric motor may be
provided for driving the camming means. Controlled mechanical
movement is provided for adjusting the degree of spring
compressions for each blow. Furthermore, adjustable valving means
is provided for controlling the exit of air above the piston in the
chamber during each blow to thus adjustably control the rate of
release of energy.
DESCRIPTION OF FIGURES
The present invention is illustrated as to a single preferred
embodiment thereof in the accompanying drawings wherein:
FIG. 1 is a perspective view of a preferred embodiment of the
present invention;
FIG. 2 is a partial sectional view taken in the plane 2--2 of FIG.
1; and
FIG. 3 is a partial sectional view taken in the plane 3--3 of FIG.
1.
DESCRIPTION OF PREFERRED EMBODIMENT
Referring now to the drawings there will be seen to be provided a
housing 11 having an opening 12 in the front thereof. Within the
housing there is provided an operating unit 13 enclosed in a casing
14 having a resilient flexible top 16 forming an operating surface
of the device. The casing 14 is mounted within the housing 11 with
the upper surface 16 of the casing extending inwardly of the
housing from the bottom of the opening 12 therein. The casing is
mounted for lateral tilting within the housing as, for example, by
attachment to a ring 17 mounted by ball bearings or the like 18 on
the inner rim of the housing opening. The casing may be fixed in
adjustable tilted position as, for example, by a spring loaded
plunger 19 adapted to fit into a plurality of small holes 21 in the
housing.
Within the casing 14 there are provided first and second pistons 22
and 23 which may be substantially identical in structure and
connection, and thus only the piston 22 is illustrated and
described. A piston chamber 24 contains the piston 22 with a piston
rod 26 extending to the bottom of the chamber and having a lateral
cam pin 27 at the bottom thereof. A spring 28 is disposed about the
piston rod 26 in compression between the underside of the piston 22
and an end plate 31. A cam 32 driven by a small electric motor 33
rotates in engagement with the cam pin 27 to thus draw the piston
downwardly against the compressive force of the spring 28. The end
plate 31 is vertically adjustable for reasons noted below and such
adjustment is only schematically illustrated as including upright
guide pins 34 with one of such pins being threaded and a traveling
nut being disposed thereon beneath the plate.
A striking member 36 is disposed beneath the cover 16 with a shaft
extending downwardly from the member through a seal in the top of
the piston chamber into engagement with the top of the piston 22.
This member 36 will thus be seen to reciprocate with the piston,
with the upward movement of the member being under the influence of
the spring 28 as it is released by the cam 32.
The piston 22 tightly fits the interior walls of the piston chamber
24 so that the piston compresses air trapped in the chamber as the
piston rises. Provision is made for controlling escape of air from
the chamber above the piston and in this respect there is shown a
needle valve 41 extending through the wall of the piston chamber at
the top of the chamber. This valve is controllable as to setting
thereof from the exterior of the casing, as indicated by the dashed
line extending from the valve. There is also provided a check valve
42 extending through the wall of the piston chamber at the top of
the chamber so that air may re-enter the chamber as the piston is
drawn downwardly therein.
There is also provided a heel rest 43 mounted atop the casing 14
as, for example, between side rails 44 for adjustable positioning
longitudinally of the top of the casing. This adjustment may, for
example, be provided by slotting the side rails and providing wing
nuts or the like on threaded portions of the heel rest extending
through the rail slots.
Considering now operation of the present invention, particularly
with regard to the application of blows to the underside of the
resilient flexible top 16 of the casing 14, it is first noted that
energization of the electric motor 33 will cause rotation of the
cam 32. The cam 32 bears upon the cam pin 27 of the piston rod 26
so as to force the rod and attached piston downwardly as the cam
rotates to thereby compress the spring 28 between the piston and
end plate 31. As the cam rotates to the point of reduced diameter
the piston is freed to be forced upwardly into the force of the
compressed spring 28. As the piston rises in the piston chamber it
compresses air above the piston and the rate at which this air is
allowed to escape from the chamber is controlled by the needle
valve 41. As the piston rapidly rises it carries the striking
number 36 with it so that this member 36 thus strikes the underside
of the resilient cover 16 to force it upwardly. Continued rotation
of the cam 32 then forces the piston downwardly to again compress
the spring 28 for the next blow of the member 36.
Adjustment of the position of the end plate 31 will be seen to set
the amount of compression of the spring 28 as the piston is drawn
downwardly and thus the total mount of energy stored in the spring
for release to move the piston. Adjustment of the needle valve 41
controls the escape of air from the chamber above the piston and
consequently the rate of release to the striking member 36. The
check valve 42 is required to allow air to re-enter the chamber
above the piston when it is drawn downwardly for the next blow. It
is also noted that means are provided for controlling the speed of
the motor 33 as, for example, by means of a rheostat or the like so
that the rapidity with which the blows are struck is
controllable.
It is to be noted that in general the device illustrated in the
drawings is adapted to strike successive blows by the two pistons
for the purpose of alternately hitting the ball and heel of a foot
disposed in the upper surface of the casing. Consequently it is
normally preferable to employ but a single electric motor 33 and to
drive the cams for both pistons therefrom with such cams being
properly oriented to alternately release the two pistons to drive
the striking members thereof upwardly into engagement with the
underside of the resilient cover 16. Such connection is
schematically illustrated by the shaft or the like 46 extending
laterally from the motor 33. Suitable mechanical means may be
provided for transmitting this drive however, it is preferred that
the overall device be maintained as simple as possible so that in
practice the axes of the cams would be rotated 90.degree. from the
illustration of FIG. 2 with the motor located between the two
cams.
There may also be provided means for longitudinally tilting the
casing 14 in the housing. This may be provided by simple mechanical
means such as illustrated at 47 including a threaded stud extending
from the bottom of the casing and engaged by a sleeve threaded
thereon and in turn engaging a curved inner surface of the housing
11. Control over the adjustments described above particularly with
regard to location of the end plate, speed of the electric motor
and setting of the needle valve may be provided upon the exterior
of the housing 11. No attempt is made to show actual connections of
adjusting means but instead these are schematically illustrated by
dashed lines in FIG. 2.
It will be appreciated that the present invention provides a simple
device for the application of blows to the bottom of a foot, for
example, and furthermore provides a high degree of control over
this operation. Not only is the device adjustable as to position
but also the amount of energy and rate of release of energy in each
blow as well as the rapidity of blows are all readily controllable.
This is highly advantageous in the field of orthopedics for it will
be appreciated that different applications of the present invention
and application of the invention to different patients require the
capability of careful adjustments so as to accomplish the
therapeutic purposes of the invention. Although the invention has
been described with respect to a single preferred embodiment
thereof it is not intended to limit the invention to the details of
illustration of description.
* * * * *