Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
1994-08-05
2004-10-05
Le, Thien M. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S462250
Reexamination Certificate
active
06799725
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a pill on which is applied a micro barcode containing identification and/or medical information concerning the pill. Such identification and/or medical information is scanned and then either enunciated or displayed to a medical or health care professional handling the pill or to a patient planning to digest the pill.
Generic drugs in pill form become more common every day. The pills are in a variety of shapes and colors. Indeed, pills of one manufacturer containing one type of medication may have a confusingly similar color and shape of another containing a different medication. A mix-up between pills containing different medications is potentially dangerous for the patient relying on receiving the correct medication.
Standardizing the color and shape of every kind of pill containing the same medication may be one answer to resolving the mix-up problem, but is not commercially viable in a freely competitive marketplace, where pill manufacturers seek proprietary rights in the trade dress of their pills. Indeed, such a practice may do a disservice to the public, who may come to rely on the quality of pills from a particular manufacturer but, under standardization of shape and color, has no way of knowing whether the pill itself actually originated from that manufacturer or was substituted by a generic copy. So called tamperproof bottles help curtail unauthorized substitution of medication, but they are not completely reliable.
Even if the tamperproof bottles were to effectively prevent unauthorized pill substitution, a patient taking multiple medications, especially if the person is visually impaired or has trouble thinking clearly, may mix up the different medications and thereby take one type of medication at the wrong time. For instance, an elderly patient taking heart medicine may be trying to follow a prescribed treatment by taking various doses of medication throughout the day. Mixing one type of medication for another could prove fatal (e.g., a prescription could be: take exactly five tablets of pill X every 3 hours and take exactly two tablets of pill Y every 5 hours. Mistaking X for Y and vice versa could be disastrous).
Another problem is potency. Medication may lose its potency over time or when exposed to the elements such as sunlight. A patient may not be aware that the potency of a pill being taken is no longer viable, due to a long-shelf life in the store or in the home.
Pharmacists and other health care personnel responsible for providing the patient with medication will continue to find it increasingly difficult to distinguish one type of pill from another as pills of different sources appear similar in shape and color. Other than relying on what is printed on the bottle containing the pills, there is no way to verify that a pill's potency expiration date has not already expired, absent independent testing. With medication passing through many different distributors before reaching the patient, the unscrupulous practice of fraudulent switching of new medication for old may become increasingly the norm. Such switching may become particularly hazardous, not only because pills with diminished potency are unknowingly being taken by patients, but also if the unscrupulous merchant doing the switching mixes up one type of medication for another because of their similar shape and color.
In addition, health care professionals, such as nurses in hospitals, may be responsible each day for distributing medication to patients under their care. For convenience, they may sort the medication for the entire day as one of their first tasks in the morning. This task may be assigned to one or a few nurses on the floor to free the other nurses for other duties. If a mistake is made in sorting the medication, the mistake may not be noticed unless the nurse distributing the medication realizes upon close scrutiny that the medication is wrong. The potential for human error, therefore, is ever present.
It would therefore be desirable to provide a system to identify each individual pill before it is taken by a user as to its source, the type of medication it contains and the potency expiration date and thereby safeguard against unauthorized switching of medication or the taking of medication whose potency has lapsed.
Standard barcode typically found on packaging is too large to be imprinted on pills. It is therefore not feasible to use this technology in connection with labeling individual pills.
SUMMARY OF THE INVENTION
One aspect of the invention relates to a pill on which is applied a non-toxic, pharmaceutically inert (to the contents of the pill) label in micro barcode form. The micro barcode is coded with a pattern that, when read, is interpreted as identification and/or medical information pertaining to the pill. The identification may include information concerning the type of medication contained in the pill, the manufacturer or source identification such as the distributor and country of origin, and production lot number. The medical information may include information concerning frequency and quantity of dosages for different kinds of treatments, medically related warnings concerning the medication, and the potency expiration date.
Another aspect of the invention relates to a scanner of micro barcode that preferably is equipped with a computer program that indicates the information contained in the micro barcode to the patient or other viewer of the information. Preferably, the computer program has an internal clock and is programmed to keep track of when medications should be taken and the proper dosages.
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“Automatic Identification: Serving The Service Industries”, ID Systems, Scan—Tech 87 Preview, vol. 7 No. 8, Oct. 1987.*
“Imprinting of Solid Oral Dosage Form Drug Products for Human Use”, vol. 58, No. 175, Sep. 1993.*
The New York Times, Barnaby J. Feder, “For Bar Codes, an Added Dimension—The Bar Code Is Getting More Sophisticated”, Wednesday, Apr. 24, 1991, First Business Page and p. D9 (2 sheets).
New Barcode World of Tomorrow presented by NEOREX.
Hess Robert J.
Sullivan Scott L.
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