Handheld apparatus for creating a puncture wound
First Claim
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1. A handheld apparatus for creating a puncture wound in a body part having a layer of skin with an epidermis, the apparatus comprising:
- a puncture element;
a drive for moving the puncture element toward and away from the skin;
a housing adapted to contact a body part and having an opening by which the puncture element can puncture the body part;
a control unit configured to automatically control movement of the puncture element, the control unit configured to automatically;
move the puncture element in a skin opening step a first distance toward the skin with the drive, whereby a skin opening may be created;
completely withdraw the puncture element from the body part at the end of the skin opening step; and
thenmove the puncture element with the drive in a sample collection step toward the skin a second distance that is as great or greater than the first distance, whereby a puncture wound for collecting a sample may be created;
wherein, the movement of the puncture element in the skin opening step and the movement of the puncture element in the sample collection step comprise consecutive movements;
further wherein, the time interval between the time at which the puncture element is completely withdrawn from the body part at the end of the skin opening step and the time at which the puncture element first enters the body part during the sample collection step is 1 millisecond to 1 second, to thereby allow the epidermis at the skin opening to relax.
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Abstract
The invention relates to a method for creating a puncture wound for obtaining a sample of a body fluid from a body part in which a skin opening is created at a puncture site in the epidermis in a skin-opening step. Then, in a sample collection step a sample collection puncture is executed by using a puncture element with which the skin opening is deepened with the puncture element, thereby creating a puncture wound for obtaining the sample. The invention also relates to a handheld apparatus for implementing this method.
17 Citations
18 Claims
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1. A handheld apparatus for creating a puncture wound in a body part having a layer of skin with an epidermis, the apparatus comprising:
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a puncture element; a drive for moving the puncture element toward and away from the skin; a housing adapted to contact a body part and having an opening by which the puncture element can puncture the body part; a control unit configured to automatically control movement of the puncture element, the control unit configured to automatically; move the puncture element in a skin opening step a first distance toward the skin with the drive, whereby a skin opening may be created; completely withdraw the puncture element from the body part at the end of the skin opening step; and
thenmove the puncture element with the drive in a sample collection step toward the skin a second distance that is as great or greater than the first distance, whereby a puncture wound for collecting a sample may be created; wherein, the movement of the puncture element in the skin opening step and the movement of the puncture element in the sample collection step comprise consecutive movements; further wherein, the time interval between the time at which the puncture element is completely withdrawn from the body part at the end of the skin opening step and the time at which the puncture element first enters the body part during the sample collection step is 1 millisecond to 1 second, to thereby allow the epidermis at the skin opening to relax. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification