US RE35,539 EGranted

Disposable blood collection device

AssigneeCare Medical Devices, Inc.

InventorJean M. Bonaldo

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Abstract

A blood collection device wherein a double-ended cannula is retracted within the barrel of the device for storage and disposal. The cannula is attached to the device immediately prior to use by being threaded into an aperture formed in a movable disc disposed within the barrel and rotated to a locked operating position for attachment of the cannula and use. After use, the disc is counter-rotated to permit the cannula, mounted to the disc, to be longitudinally retracted completely within the barrel to a position in which the cannula is permanently locked by stopping the disc against further movement. The disc aperture is threaded in the same direction as it is rotated to the operating position to avoid moving the disc out of the locked position during attachment of the cannula to the device.

Claims18

Dependent claims

A blood collection device comprising:

a cylindrical barrel formed of a resilient material and closed at one end with an axially disposed aperture formed therein so as permit the extension and retraction through said barrel aperture of one end of a double-ended cannula, said cylindrical barrel being open at the other end to permit insertion of a sample collection container into the other end of said cannula and the removal thereof therethrough;
a disc transversely disposed within the barrel and adapted to receive the double-ended cannula by the threaded engagement of threads formed on a boss on the cannula with threads formed in an aperture in the disc so that said one end of the cannula is disposed to one side of the disc and said other end of the cannula is disposed to the other side thereof, said cannula thereby being axially aligned with the barrel;
a longitudinal passage formed in the surface of said barrel so as to extend parallel to the barrel axis from immediately adjacent the barrel closed end through the barrel open end;
a stem connected to the disc within the barrel so as to extend externally of the barrel and generally transverse thereto and operable to initiate longitudinal movement of the disc relative to the barrel to an operating position adjacent barrel closed end, in which, when said cannula is fixed to said disc, one end of the cannula extends out of the barrel aperture, and in which, when the disc is moved longitudinally away from the barrel closed end to a preselected disposal position between the barrel open end and the barrel closed end, both ends of the cannula are disposed within the barrel;
locking means for locking the disc in said disposal position;
closing means selectively operable to close the open end of the barrel;
and in which said longitudinal, passage includes a slot portion adjacent the barrel closed end and terminating thereat offset opening so disposed that the disc stem can be rotated thereinto when the disc is adjacent the barrel closed end to lock the disc against longitudinal movement, and a disposal position locking aperture formed in a portion of the longitudinal passage between the barrel open end and the barrel closed end in a portion thereof comprised by a longitudinal slit, said slot portion narrowing into said slit portion by means of a first camming surface formed on the barrel between the offset opening and the locking aperture.

4 more elements

A blood collection device comprising:

a cylindrical barrel formed of a resilient material and closed at one end with an axially disposed aperture formed therein so as permit the extension and retraction through said barrel aperture of one end of a double-ended cannula, said cylindrical barrel being open at the other end to permit insertion of a sample collection container onto the other end of said cannula and the removal thereof therethrough;
a disc transversely disposed within the barrel and to which the double-ended cannula is fixed so that said one end of the cannula is disposed to one side of the disc and said other end of the cannula is disposed to the other side thereof, said cannula thereby being axially aligned with the barrel;
a longitudinal passage formed in the surface of said barrel so as to extend parallel to the barrel axis from immediately adjacent the barrel closed end through the barrel open end;
a stem connected to the disc within the barrel so as to extend externally of the barrel and generally transverse thereto and operable to initiate longitudinal movement of the disc relative to the barrel to an operating position adjacent barrel closed end, in which one end of the cannula extends out of the barrel aperture, and in which, when the disc moved longitudinally away from the barrel closed end to a pre-selected disposal position between the barrel open end and the barrel closed end, both ends of the cannula are disposed within the barrel;
locking means for locking the disc in said disposal position;
closing means selectively operable to close the open end of the barrel;
and in which said longitudinal passage includes a slot portion adjacent the barrel closed end and terminating thereat in an offset opening so disposed that the disc stem can be rotated thereinto when the disc is adjacent the barrel closed end to lock the disc against longitudinal movements, and a disposal position locking aperture formed in a portion of the longitudinal passage between the barrel open end and the barrel closed end in a portion thereof comprised by a longitudinal slit, said slot portion narrowing into said slit portion by means of a first camming surface formed on the barrel between the offset opening and the locking aperture.

4 more elements

In a medical device, the combination of:

a cylindrical barrel formed of a resilient material and having a first end and a second end, said second end being open to permit insertion of a container into said second end;
disc means transversely disposed within the barrel so as normally to be positioned adjacent to said first end and having an aperture adapted to receive a cannula in axial alignment with the barrel by the threaded engagement of threads formed on a boss on the cannula with threads formed on the disc means;
a longitudinal passage formed in the peripheral surface of said barrel so as to extend parallel to the barrel axis from immediately adjacent the barrel first end through the barrel second end;
a stem connected to the disc means within the barrel so as to extend externally of the barrel and generally transverse thereto and operable to initiate longitudinal movement of the disc means relative to the barrel to an operating position adjacent barrel first end, in which, when said cannula is fixed to said disc means, one end of the cannula extends out of the barrel first end, and in which, when the disc means is moved longitudinally away from the barrel first end to a pre-selected disposal position between the barrel second end and the barrel first end, the cannula is completely disposed within the barrel;
and
locking means for locking the disc means in said disposal position;
and in which said longitudinal passage includes a slot portion adjacent the barrel first end and terminating in an offset opening disposed at the first end so that the disc stem can be rotated thereinto when the disc means is adjacent the barrel first end to lock the disc means against longitudinal movement, and a disposal position locking aperture formed in a portion of the longitudinal passage between the barrel second end and the barrel first end in a portion thereof comprised by a longitudinal slit, said slot portion narrowing into said slit portion by means of a first camming surface formed on the barrel between the offset opening and the locking aperture.

4 more elements

In a medical device, the combination of:

a cylindrical barrel having a first end and a second end, said second end being open to permit insertion of a container into said second end;
disc means transversely disposed within the barrel so as normally to be positioned adjacent to said first end and having an aperture adapted to receive a cannula in axial alignment with the barrel by the engagement of a boss on the cannula with the disc means at the aperture;
a longitudinal passage formed in the peripheral surface of said barrel so as to extend parallel to the barrel axis from immediately adjacent the barrel first end through the barrel second end;
a stem connected to the disc means within the barrel so as to extend externally of the barrel and generally transverse thereto and operable to initiate longitudinal movement of the disc means relative to the barrel to an operating position adjacent barrel first end, in which, when said cannula is fixed to said disc means, one end of the cannula extends out of the barrel first end, and in which, when the disc means is moved longitudinally away from the barrel first end to a pre-selected disposal position between the barrel second end and the barrel first end, the cannula is completely disposed within the barrel;
and
locking means for locking the disc means in said disposal position;
and in which said longitudinal passage includes a slot portion adjacent the barrel first end and terminating in an offset opening disposed at the first end so that the disc stem can be rotated thereinto when the disc means is adjacent the barrel first end to lock the disc means against longitudinal movement, and a disposal position locking aperture formed in a portion of the longitudinal passage between the barrel second end and the barrel first end in a portion thereof comprised by a longitudinal slit, said slot portion narrowing into said slit portion by means of a first camming surface formed on the barrel between the offset opening and the locking aperture.

4 more elements

Dependencies are inferred from the claim text.

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Abstract

A blood collection device comprising:

a cylindrical barrel formed of a resilient material and closed at one end with an axially disposed aperture formed therein so as permit the extension and retraction through said barrel aperture of one end of a double-ended cannula, said cylindrical barrel being open at the other end to permit insertion of a sample collection container into the other end of said cannula and the removal thereof therethrough;
a disc transversely disposed within the barrel and adapted to receive the double-ended cannula by the threaded engagement of threads formed on a boss on the cannula with threads formed in an aperture in the disc so that said one end of the cannula is disposed to one side of the disc and said other end of the cannula is disposed to the other side thereof, said cannula thereby being axially aligned with the barrel;
a longitudinal passage formed in the surface of said barrel so as to extend parallel to the barrel axis from immediately adjacent the barrel closed end through the barrel open end;
a stem connected to the disc within the barrel so as to extend externally of the barrel and generally transverse thereto and operable to initiate longitudinal movement of the disc relative to the barrel to an operating position adjacent barrel closed end, in which, when said cannula is fixed to said disc, one end of the cannula extends out of the barrel aperture, and in which, when the disc is moved longitudinally away from the barrel closed end to a preselected disposal position between the barrel open end and the barrel closed end, both ends of the cannula are disposed within the barrel;
locking means for locking the disc in said disposal position;
closing means selectively operable to close the open end of the barrel;
and in which said longitudinal, passage includes a slot portion adjacent the barrel closed end and terminating thereat offset opening so disposed that the disc stem can be rotated thereinto when the disc is adjacent the barrel closed end to lock the disc against longitudinal movement, and a disposal position locking aperture formed in a portion of the longitudinal passage between the barrel open end and the barrel closed end in a portion thereof comprised by a longitudinal slit, said slot portion narrowing into said slit portion by means of a first camming surface formed on the barrel between the offset opening and the locking aperture.

4 more elements