Patient support apparatus

• US 4,694,520 A
• Filed: 01/15/1986
• Issued: 09/22/1987
• Est. Priority Date: 01/15/1986
• Status: Expired due to Term

• Current Assignee: Hill-Rom Services Incorporated (Baxter International Inc.)
• Original Assignee: SSI Medical Services, Inc.
• Inventors: Price, James H., Paul, Patrick R. D.
• Primary Examiner(s): Pate, III, William F.
• Assistant Examiner(s): Safavi, Michael
• Application Number:
  US06/819,119
• Time in Patent Office: 615 Days
• Field of Search: 5/449, 5/455, 5/453, 5/469, 5/454, 340/540, 340/568, 52/2
• US Class Current: 5/706
• CPC Class Codes: A61G 2203/34 for pressure
• CPC Class Codes: A61G 7/05769 with inflatable chambers
• CPC Class Codes: G05D 16/2066 using controlling means acting on the pressure source
• CPC Class Codes: Y10S 5/94 with alarm means

Abstract

An improved patient support system including a fluid inflatable support for receiving a patient thereon; a fluid supply source in communication with said fluid support, a detector associated with said fluid support means for monitoring the degree of inflation of said support, and control valving, switching or the like operatively associated with said fluid supply and said detector to actuate said fluid supply responsive to predetermined input from said detector.

Claims

1. An improved fluid support system comprising:

(a) a support frame;

(b) an inflatable patient support means support by said frame;

(c) means for supplying fluid to said inflatable support means for support of a patient in a supine position thereon;

(d) detector means associated with said support means for determining inadequate inflation of said support means when a patient is residing thereon;

(e) timer means operatively associated with said detector means whereby said timer means is actuated simultaneously with said detector means and is deactuated upon cessation of operation of said fluid supply means; and

(f) control means operatively associated with said fluid supply means and said detector means for receiving input from said detector means that said support means is inadequately inflated and admitting fluid supply to said support means responsive to said input.

2. An improved fluid support system as defined in claim 1 wherein the inflatable patient support means is an inflatable envelope.

3. An improved fluid support system as defined in claim 2 wherein said detector means is a pressure sensor.

4. An improved fluid support system as defined in claim 2 further comprising alarm means operatively associated with said timer means, said timer means actuating said alarm after a predetermined period of operation of said fluid supply means.

5. An improved fluid patient support as defined in claim 1 wherein said inflatable patient support means comprises a plurality of juxtaposed inflatable air bags.

6. An improved fluid support system for a patient comprising:

(a) a support frame;

(b) an inflatable support envelope;

(c) fluid supply means in communication with said envelope;

(d) control means operatively associated with said fluid supply means for actuation and deactuation of said supply of fluid to said envelope;

(e) detector means operatively associated with said envelope for determination of inadequate fluid within said envelope and operatively associated with said fluid supply control means, whereby upon detection of inadequate fluid within said envelope, said control means actuates said fluid supply means to cause fluid to be supplied to said envelope for a predetermined period of time ;

and

alarm means operatively associated with said control means, said alarm means becoming actuated after a predetermined period of time.

7. An improved fluid patient support as defined in claim 6 wherein said control means maintains said supply means in a state of actuation so long as said detector means remains actuated.

8. An improved fluid patient support system as defined in claim 6 further comprising timer means operatively associated with said detector means and said control means, said timer means causing continued actuation of said fluid supply means for a predetermined period of time following deactuation of said detector means.