Device and method for the chemical testing and microscopic examination of liquid specimens
First Claim
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1. A device for facilitating the microscopic viewing of liquid specimens, said device comprising:
- an elongated strip having a sampling and viewing chamber at the lower extremity thereof, said chamber being formed by two generally parallel transparent flat members which are spaced close enough together to be filled by capillary action and said chamber being sufficiently open to permit it to be filled when immersed in a liquid;
a strip supporting member having an opening formed therein for insertion of the lower extremity of said elongated strip, said opening being small enough so that the strip supporting member is firmly held by said strip after the strip is inserted therein; and
test tube means having means for limiting the downward movement of the strip supporting member formed near the bottom thereof, said test tube means being large enough to permit the insertion of the strip and strip supporting member therein and said means for limiting being large enough to permit the insertion of the lower end of the strip but being configured to prevent the passage of the strip supporting member past the shoulder and instead to hold the strip supporting member thereon and to form a generally waterproof barrier between the inner wall of the test tube means and the strip supporting member, whereby liquid located below said strip supporting member will be held in said test tube means when said strip supporting member is held in its lowermost position in said test tube means; and
means preventing liquid flow into said sampling and viewing chamber until said strip supporting member contacts said means for limiting the downward movement.
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Abstract
A device for facilitating the microscopic and/or spectrophotometric viewing of liquid specimens. The device is an elongated strip having a chamber at one end. The chamber is formed by two generally parallel transparent flat sheets. The device is held by a supporting disc or plug which has a slot or chamber formed for insertion of the strip. The strip with its surrounding disc or plug is inserted in a test tube which has a disc-supporting shoulder formed near the bottom thereof. The disc or plug traps a certain amount of liquid below the shoulder near the bottom of the test tube.
60 Citations
29 Claims
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1. A device for facilitating the microscopic viewing of liquid specimens, said device comprising:
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an elongated strip having a sampling and viewing chamber at the lower extremity thereof, said chamber being formed by two generally parallel transparent flat members which are spaced close enough together to be filled by capillary action and said chamber being sufficiently open to permit it to be filled when immersed in a liquid; a strip supporting member having an opening formed therein for insertion of the lower extremity of said elongated strip, said opening being small enough so that the strip supporting member is firmly held by said strip after the strip is inserted therein; and test tube means having means for limiting the downward movement of the strip supporting member formed near the bottom thereof, said test tube means being large enough to permit the insertion of the strip and strip supporting member therein and said means for limiting being large enough to permit the insertion of the lower end of the strip but being configured to prevent the passage of the strip supporting member past the shoulder and instead to hold the strip supporting member thereon and to form a generally waterproof barrier between the inner wall of the test tube means and the strip supporting member, whereby liquid located below said strip supporting member will be held in said test tube means when said strip supporting member is held in its lowermost position in said test tube means; and
means preventing liquid flow into said sampling and viewing chamber until said strip supporting member contacts said means for limiting the downward movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 29)
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24. A method for performing a urinalysis test on a specimen of urine comprising the steps of:
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placing a specimen in a test tube having an inner stop means positioned near the bottom thereof; centrifuging the specimen; placing an elongated strip having a chamber formed by two generally parallel transparent flat members at the lower extremity thereof, said flat members being close enough together to be filled by capillary action and said chamber being sufficiently open to permit it to be filled when immersed in a liquid, through a strip supporting member having a recess formed therein, said strip being small enough to fit to the bottom of said test tube and said strip supporting member being of a size and shape to permit entry into said test tube but to be held by the stop means of said test tube; inserting said strip and strip supporting member into said centrifuged sample until said strip supporting member rests on said stop means, said chamber not being open to the contents of the test tube at this time; decanting that portion of the specimen held above said strip supporting member while maintaining that portion of the specimen held below said strip supporting member; agitating the remaining liquid in the test tube to suspend any solid particles contained therein; pushing downwardly on said strip and opening said chamber to the contents of the test tube held below the strip supporting member until the bottom of said strip is positioned near the bottom of the test tube; and removing said strip from said test tube and viewing the sample held within the chamber of said strip. - View Dependent Claims (27, 28)
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Specification