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Enclosed ambulatory pump

  • US 5,897,530 A
  • Filed: 12/24/1997
  • Issued: 04/27/1999
  • Est. Priority Date: 12/24/1997
  • Status: Expired due to Fees
First Claim
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1. An ambulatory pump for dispensing a liquid under pressure at a predetermined flow rate comprising:

  • a housing;

    first and second fixed end caps positioned on the housing and enclosing the housing, each of the end caps having a port formed therein;

    a pressurizable bladder defining an interior storage volume, the bladder being carried by the housing for receiving and dispensing the liquid, the bladder being expandable between an unexpanded condition and an expanded condition, the bladder having a free end defining an opening in flow communication with the second end cap port and a fixed end defining an opening in flow communication with the first end cap port; and

    flexible tubing carried by the housing, the flexible tubing extending between and in flow communication with the bladder free end opening and an opening for filling the bladder with liquid.

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