U.S. patent number 3,645,283 [Application Number 04/864,101] was granted by the patent office on 1972-02-29 for apparatus for cleaning bedpans.
This patent grant is currently assigned to Castan Limited. Invention is credited to Raymond John Naismith Cassells.
United States Patent |
3,645,283 |
Cassells |
February 29, 1972 |
APPARATUS FOR CLEANING BEDPANS
Abstract
This invention is an automatic cleaning unit for emptying,
cleaning and sterilizing bedpans in hospitals. The nurse puts the
full bedpan straight into the cabinet and an automatic cleaning
cycle is initiated by the closing of the door, which first turns
the pan over so that the contents falls into a collecting chamber
from which it runs to sewage. Then cold water is sprayed on to the
surfaces of the pan and it is turned upright and sterilizing fluid
is directed at its surfaces for sterilizing it and drying it.
Inventors: |
Cassells; Raymond John Naismith
(Portsmouth, EN) |
Assignee: |
Castan Limited (Portsmouth,
EN)
|
Family
ID: |
10444933 |
Appl.
No.: |
04/864,101 |
Filed: |
October 6, 1969 |
Foreign Application Priority Data
|
|
|
|
|
Oct 7, 1968 [GB] |
|
|
47,427/68 |
|
Current U.S.
Class: |
134/58DL;
134/95.3; 134/143; 134/152; 134/171 |
Current CPC
Class: |
A61G
9/02 (20130101) |
Current International
Class: |
A61G
9/00 (20060101); A61G 9/02 (20060101); B08b
003/02 (); B08b 009/08 () |
Field of
Search: |
;134/143,152,171,57DL,58R,58DL,94,95,99 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Bleutge; Robert L.
Claims
What I claim as my invention and desire to secure by Letters Patent
is:
1. Apparatus for emptying and cleaning bedpans including a casing,
a tray, bearings mounting the tray for rotation about a horizontal
axis through more than 90.degree. between its upright and its
inverted positions, clips on said tray for retaining the bedpan
thereon in all positions of said tray, a motor operatively
connected with said tray for rotating same, a collecting chamber in
said casing for receiving the contents of the bedpan when inverted
with said tray, a fluid jet system disposed in alignment with said
tray when inverted to direct cleaning fluid at the bedpan in its
inverted position, a fluid system disposed above the tray in its
upright position for directing a drying fluid at the bedpan in its
upright position, and cyclic means controlling a cleaning cycle and
operatively interconnected with said motor, said fluid jet system
and said fluid system for automatically inverting said tray and
bedpan, cleaning the bedpan with the cleaning fluid, returning said
tray and bedpan to the upright position and drying the bedpan with
the drying fluid.
2. Apparatus as claimed in claim 1 including a door in the casing
and means responsive to closing of the door to start the cycle.
3. Apparatus as claimed in claim 1 including a pipe for leading the
emptied contents of the receptacle from the collecting chamber to a
sewage system.
Description
This invention relates to the cleaning of bedpans or other
receptacles, for example those used in hospitals and other places
in which clean and sterile containers are used and have to be
reused.
According to the present invention apparatus for emptying and
cleaning receptacles includes a casing, a holder in the casing for
a receptacle and mounted in a manner to be at least partly inverted
to empty the receptacle into a collecting chamber in the casing and
a fluid jet system arranged to thereafter direct cleaning fluid at
the receptacle.
The receptacle may therefore be placed within the casing and
emptied, cleaned and sterilized in a single operation without the
need for any intermediate handling.
Preferably the apparatus includes a pivoted tray inside the
receptacle on which the receptacle may be placed, the tray being
arranged to be tilted in order to empty the container.
The cycle of operations, e.g., emptying, cleaning and sterilizing,
may be controlled automatically from outside the apparatus and the
different stages in the cycle may be timed so that the stages in
the cycle may take different times depending on the type of
container which is being used.
The invention may be carried into practice in various ways and one
embodiment will be described by way of example with reference to
the accompanying drawings, of which;
FIG. 1 is an elevation of apparatus embodying the invention showing
the interior; and
FIG. 2 is an elevation of the outside from the opposite side.
The bedpan cleaning unit is in a cabinet 11 having a front door 12
near the top through which the bedpan 13 can be placed on a tray
14. The tray is arranged to pivot about a horizontal axis 15
through an angle of about 130.degree. to a position shown in chain
lines in FIG. 1 against stops 16. In this position the contents of
the bedpan can fall out into a lower chamber 17 from which it flows
through a bend pipe 18 to the sewage system. Clips 19 on the tray
14 prevent the bedpan 13 from falling from the tray when it is
inverted.
In the inverted position any residue in the bedpan can be swilled
out and the surfaces of the bedpan and the inner surfaces of the
lower chamber 17 can be swilled with cold water directed from
nozzles 21. These nozzles are supplied with water from a pump 22
drawing water from the water mains at 23 and supplying water
through pipes 24, 25, 26 and 27 by way of an electrically operated
valve 28. A further nozzle 29 is supplied with water from the pump
by way of pipes 31 and a similar valve 30.
After this operation the tray 14 with the bedpan is turned back to
its upwardly open position and then sterilizing fluid is pumped
from the blower 34 into the upper chamber 35 at 36 from which it is
directed on to the bedpan to sterilize it, dry it and warm it.
Further sterilizing fluid can come through the jet 37 by way of the
pipe 38.
After a time interval determined by a clock 39, the blower is
switched off and a lamp is operated to indicate that the bedpan is
cleaned and sterilized and ready for use. The operator can then
open the door 12 by use of a foot pedal 41 and a conventional link
42 and remove the bedpan for further use leaving the upper
compartment of the tray ready for cleaning another bedpan.
The various operations are automatically initiated in sequence in a
cleaning cycle which is started when the door 12 is closed. This
operates a switch in a bank of switches and relays indicated
generally at 43 which controls in an appropriate sequence
operation, the pump 22, controls 44 and 45 for the water valves 28
and 30, and the blower 34. The relay bank 43 includes the clock 39
which determines the time interval between successive stages in the
cycle of operation.
Inversion of the tray 14 is by means of a hydraulic actuator 46
which can be operated in one direction or the other by means of
water from lines 47 and 48 tapped off the pipes 25 and 31.
Operation of this actuator turns a gearwheel 51 on a shaft on the
axis 15 by means of a chain 52 pulling against a spring 49. Thus,
as the water starts to flow into the lower chamber 17, the gear 51
is turned to invert the tray while the bedpan remains in the lower
compartment being swilled with cold water for a time determined by
the clock 39, after which the actuator 46 returns the tray to the
initial position and the water supply to the nozzles 21 and 29 is
cutoff. Then the next contact closes to energize the blower 34 for
a preset time determined by the clock 39 and when this has expired
the blower is turned off and the indicating lamp is operated.
It will be clear that such apparatus is easy to use and enables
laborious and unpleasant work in hospitals to be avoided and also
reduces the danger of cross infection from different patients using
the same bedpan in succession.
Although in the embodiment described the tray 14 holds a single
bedpan it would also be possible to empty and sterilize a number of
bedpans in one operating cycle.
* * * * *