Automatic urine disposal device and urine receptacle used therefor

Abstract

In a urine receptacle of an automatic urine disposal device, a urine backflow prevention sheet, with no water permeability, and having funnel-shaped pores, is placed between a top sheet and a urine absorbing sheet. A pair of rectangular electrodes, constituting a urine detection sensor, is glued onto an electrode support sheet and is placed between the top sheet and the urine backflow prevention sheet. A plurality of funnel-shaped pores is formed on the urine backflow prevention sheet.

1 . An automatic urine disposal device, comprising: 
 a urine receptacle for absorbing urine discharged by a wearer,    a urine tank for storing urine collected by the urine receptacle, and    a urine drainage tube for directing urine from the urine receptacle into the urine tank, characterized in that,    a vacuum pump for lowering pressuring inside said urine tank is provided,    said urine receptacle has a top sheet to be placed in contact with the wearer, a urine absorbing sheet for absorbing urine that has passed through the top sheet, a urine backflow prevention sheet having a plurality of pores placed between the top sheet and the urine absorbing sheet, and a urine detection sensor with a pair of electrodes placed between said top sheet and said urine backflow prevention sheet, and    said urine tank is sealed.    
   
   
       2 . The automatic urine disposal device according to  claim 1 , characterized in that 
 the plurality of pores formed on said urine backflow prevention sheet are funnel-shaped.    
   
   
       3 . The automatic urine disposal device according to  claim 2 , characterized in that 
 said urine backflow prevention sheet does not have water permeability,    the urine backflow prevention sheet is placed between the top sheet with water permeability and the urine absorbing sheet for absorbing urine,    said electrodes are rectangular-shaped and become electrically conductive when in contact with urine, and    said vacuum pump becomes activated when said urine detection sensor detects urine and lowers pressure inside said urine tank.    
   
   
       4 . The automatic urine disposal device according to  claim 3 , characterized in that 
 said top sheet has water permeability,    said urine tank houses a sealed urine pack, and    a urine swaying motion control means is contained in the urine pack for controlling swaying motions of urine that flows into the urine pack.    
   
   
       5 . The automatic urine disposal device according to  claim 1 , characterized in that 
 said urine receptacle has a support sheet with a urine drainage port formed thereon, the support sheet having no water permeability, and    said urine absorbing sheet is held by this support sheet.    
   
   
       6 . The automatic urine disposal device according to  claim 5 , characterized in that 
 a urine absorbing space forming material is placed between said support sheet and said urine absorbing sheet.    
   
   
       7 . The automatic urine disposal device according to  claim 4 , characterized in that 
 said urine drainage tube consists of a first urine drainage tube on the urine pack side and a second urine drainage tube on the urine receptacle side, and    a joint for connecting the first and second urine drainage tubes is provided such that the first and second urine drainage tubes can be freely detached from/attached to each other.    
   
   
       8 . The automatic urine disposal device according to  claim 3 , characterized in that 
 the electrodes of said urine detection sensor are placed between the cushion sheet and said urine backflow prevention sheet.    
   
   
       9 . A urine receptacle for absorbing urine discharged from the urinating part of a wearer, to be used with an automatic urine disposal device, comprising: 
 a support sheet with a urine drainage port formed thereon, the support sheet having no water permeability,    a urine absorbing sheet for absorbing urine held by said support sheet,    a urine backflow prevention sheet with funnel-shaped pores, the urine backflow prevention sheet being located between said urine absorbing sheet and a top sheet, and    a urine detection sensor having two electrodes, the urine detection sensor being placed between said top sheet and said urine backflow prevention sheet.    
   
   
       10 . The urine receptacle according to  claim 9 , characterized in that 
 a urine absorbing space forming material is placed between said support sheet and said urine absorbing sheet.    
   
   
       11 . The urine receptacle according to  claim 10 , characterized in that 
 a plurality of funnel-shaped pores are formed on said urine backflow prevention sheet, and    said electrodes are rectangular-shaped.    
   
   
       12 . The urine receptacle according to  claim 9 , characterized in that 
 a cushion sheet is placed between said top sheet and said urine backflow prevention sheet, and    said electrodes are placed between the cushion sheet and said urine backflow prevention sheet.