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Eyedrop delivery system

  • US 5,171,306 A
  • Filed: 03/13/1991
  • Issued: 12/15/1992
  • Est. Priority Date: 03/13/1991
  • Status: Expired due to Fees
First Claim
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1. An eyedrop delivery system for administering eyedrops to at least one eye of a user, said system comprising:

  • a fluid reservoir for holding a supply of eyedrop fluid;

    tubing means for conducting eyedrop fluid from said fluid reservoir to at least one eye of the user, said tubing means comprising at least one distal end portion adapted to terminate adjacent the at least one eye of the user;

    fluid driving means for continuously urging eyedrop fluid from said fluid reservoir through said tubing means toward said at least one distal end portion of said tubing means; and

    fluid control means for successively;

    (1) permitting eyedrop fluid to flow freely through said tubing means so that eyedrop fluid can begin to exit said at least one distal end portion of said tubing means,(2) interfering with the flow of eyedrop fluid through said tubing means so as to prohibit any further eyedrop fluid from exiting said at least one distal end portion of said tubing means, and so as to cause the eyedrop fluid beginning to exit said at least one distal end portion of said tubing means to exit said at least one distal end portion of said tubing means as a discrete eyedrop, and(3) withdrawing the eyedrop fluid remaining in said tubing means away from said at least one distal end portion of said tubing means so that the distal-most portion of the eyedrop fluid is disposed within, and is substantially engulfed by, said tubing means so the distal-most portion of the eyedrop fluid may create a super-saturated vapor condition at that point in said tubing means.

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