Infusion apparatus with alarm means

• US 5,003,296 A
• Filed: 06/08/1990
• Issued: 03/26/1991
• Est. Priority Date: 06/08/1990
• Status: Expired due to Fees

• Current Assignee: Horng-Shu Lee
• Original Assignee: Horng-Shu Lee
• Inventors: Lee, Horng-Shu
• Primary Examiner(s): Orsino, Joseph A.
• Assistant Examiner(s): Jackson, Jill
• Application Number:
  US07/535,909
• Time in Patent Office: 291 Days
• Field of Search: 128/DIG. 13, 340/618, 604/31
• US Class Current: 340/618
• CPC Class Codes: A61M 5/1684 by detecting the amount of infusate remaining, e.g. signalling end of infusion
• CPC Class Codes: Y10S 128/13 Infusion monitoring

Abstract

An infusion alarm includes an infusion bag formed between an infusion bottle and a needle or cannula insertable in a patient body, and an exhausting sensor having two leaves pivotally connected with each other for resiliently clamping the infusion bag having two contactors respectively connected to two poles of a power source connected to an alarm, whereby when the infusion liquid is being dripped to be almost exhausted as injected to a patient'"'"'s body, the two leaves of the sensor originally separated by the clamped infusion bag may be restored to close the two contactors for sounding the alarm and alerting a nurse for renewing the infusion liquid.

Claims

1. An infusion apparatus comprising:

an infusion bottle filed with infusion liquid hanged on a stand;

an inflatable infusion bag connected between said infusion bottle and an injection needle or cannula inserted into a patient'"'"'s body;

an exhaustion sensor including two clamping leaves pivotally connected with each other and resiliently restored for normally clamping said infusion bag therebetween when said bag receives the dripping liquid dripped from said infusion bottle to expand the bag, having a pair of electric contactors respectively formed in two inner portions of said two leaves normally separated with each other, each said electric contactor electrically connected to anyone pole of two poles of a power source; and

an alarm means having an alarm circuit provided with a buzzer connected between said two poles of said power source, said alarm means being actuated when the infusion bag is exhausted to close the two leaves and the two electric contactors for closing the alarm ciruit fo sounding the alarm means for alerting an exhaustion of said infusion bag, the improvement which comprises;

said exhaustion sensor including said two clamping leaves pivotally connected by a pin or bolt passing through a plurality of lugs protuding inwardly from said two leaves, a first conducting plate having a first electric contactor formed thereon secured on lower lug of two first lugs of the first clamping leaf, and a second conducting plate having a second electric contactor formed on said second plate secured to an upper lug of two second lugs of the second clamping leaf, said two conducting plates and electric contactors normally opened when said two leaves are separated by an expanded infusion bag clamped by two said leaves, and operatively closed to close said alarm circuit when said infusion bag is shrinked by exhausting its dripping liquid to close said two leaves, and

said infusion bag clamped on one said leaf by a clip secured on said leaf.