Magnetic drive device
First Claim
Patent Images
1. A device, comprising:
- a guide tube that is hollow and includes a driving end, a penetrating end, and a longitudinal axis extending from the driving end of the guide tube to the penetrating end of the guide tube;
a first driving magnet immovably fixed along a length of the longitudinal axis of the guide tube, the first driving magnet including a first magnetic axis extending from a first pole of the first driving magnet to a second pole of the first driving magnet, the first pole being disposed more proximate to the guide tube relative to the second pole, and the first magnetic axis being generally perpendicular to the longitudinal axis of the guide tube; and
a carrier magnet positioned within the guide tube, the carrier magnet including a carrier magnetic axis extending from a first pole of the carrier magnet to a second pole of the carrier magnet, the first pole of the carrier magnet and the first pole of the first driving magnet being like poles, the carrier magnetic axis of the carrier magnet oriented generally parallel to the longitudinal axis of the guide tube and perpendicular to the first magnetic axis of first driving magnet,wherein the first pole of the first driving magnet exerts a repulsive force on the first pole of the carrier magnet in a direction towards the driving end of the guide tube to magnetically hold the carrier magnet in an engaged position when the first pole of the carrier magnet is disposed between the driving end of the guide tube and the first pole of the first driving magnet;
wherein the first pole of the first driving magnet exerts a repulsive force on the first pole of the carrier magnet toward the penetrating end of the guide tube when the first pole of the carrier magnet is positioned between the first pole of the first driving magnet and the penetrating end of the guide tube.
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Abstract
Embodiments of the present invention provide magnetic lancet devices and methods for driving a lancet. For example, a magnetic lancet device may include a driving mechanism having a plurality of magnets and a lancet coupled to the driving mechanism. A magnetic interaction between the plurality of magnets is configured to drive the lancet from an engaged position to a penetrating position.
25 Citations
20 Claims
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1. A device, comprising:
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a guide tube that is hollow and includes a driving end, a penetrating end, and a longitudinal axis extending from the driving end of the guide tube to the penetrating end of the guide tube; a first driving magnet immovably fixed along a length of the longitudinal axis of the guide tube, the first driving magnet including a first magnetic axis extending from a first pole of the first driving magnet to a second pole of the first driving magnet, the first pole being disposed more proximate to the guide tube relative to the second pole, and the first magnetic axis being generally perpendicular to the longitudinal axis of the guide tube; and a carrier magnet positioned within the guide tube, the carrier magnet including a carrier magnetic axis extending from a first pole of the carrier magnet to a second pole of the carrier magnet, the first pole of the carrier magnet and the first pole of the first driving magnet being like poles, the carrier magnetic axis of the carrier magnet oriented generally parallel to the longitudinal axis of the guide tube and perpendicular to the first magnetic axis of first driving magnet, wherein the first pole of the first driving magnet exerts a repulsive force on the first pole of the carrier magnet in a direction towards the driving end of the guide tube to magnetically hold the carrier magnet in an engaged position when the first pole of the carrier magnet is disposed between the driving end of the guide tube and the first pole of the first driving magnet; wherein the first pole of the first driving magnet exerts a repulsive force on the first pole of the carrier magnet toward the penetrating end of the guide tube when the first pole of the carrier magnet is positioned between the first pole of the first driving magnet and the penetrating end of the guide tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A device, comprising:
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a guide tube that is hollow and includes a driving end, a penetrating end, and a longitudinal axis extending from the driving end of the guide tube to the penetrating end of the guide tube; a first driving magnet immovably fixed along a length of the longitudinal axis of the guide tube, the first driving magnet including a first pole and a second pole, the first pole being disposed more proximate to the guide tube relative to the second pole; a carrier magnet positioned within the guide tube, the carrier magnet including a first pole and a second pole, the carrier magnet having a carrier magnetic axis extending from the first pole to the second pole of the carrier magnet, the carrier magnetic axis of the carrier magnet oriented generally parallel to the longitudinal axis of the guide tube, the first pole of the carrier magnet and the first pole of the first driving magnet being like poles, the first pole of the carrier magnet being disposed more proximate to the penetrating end of the guide tube relative to the second pole of the carrier magnet; and a magnetic stop positioned towards the penetrating end of the guide tube relative to the carrier magnet that is configured to exert a repulsive magnetic force on the carrier magnet to stop the carrier magnet at a predetermined position, wherein the first pole of the first driving magnet exerts a repulsive force on the carrier magnet in a direction towards the driving end of the guide tube to magnetically hold the carrier magnet in an engaged position when the first pole of the carrier magnet is disposed between the driving end of the guide tube and the first pole of the first driving magnet; wherein the first pole of the first driving magnet exerts a repulsive force on the first pole of the carrier magnet toward the penetrating end of the guide tube when the first pole of the carrier magnet is positioned between the first pole of the first driving magnet and the penetrating end of the guide tube.
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18. A device, comprising:
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a guide tube that is hollow and includes a driving end, a penetrating end, and a longitudinal axis extending from the driving end of the guide tube to the penetrating end of the guide tube; a first driving magnet and a second driving magnet positioned on opposite sides along a length of the longitudinal axis of the guide tube, each driving magnet having a magnetic axis extending from a first pole to a second pole of each driving magnet, the magnetic axis of each driving magnet being generally perpendicular to the longitudinal axis of the guide tube, wherein the first pole of the first driving magnet and the first pole of the second driving magnet are like poles and are configured to face one another in a repulsive interaction to create a magnetic repulse field between the first driving magnet and the second driving magnet; a carrier magnet positioned within the guide tube, the carrier magnet including a carrier magnetic axis extending from a first pole of the carrier magnet to a second pole of the carrier magnet, the carrier magnetic axis of the carrier magnet oriented generally parallel to the longitudinal axis of the guide tube; and a stop within the guide tube that is disposed more proximate the driving end of the guide tube relative to the first driving magnet and the second driving magnet; wherein the magnetic repulse field between the first driving magnet and the second driving magnet holds the carrier magnet in an engaged position against the stop absent any mechanical force when the carrier magnet is disposed between the driving end of the guide tube and the first driving magnet and the second driving magnet; wherein, when a force is applied to the carrier magnet at the driving end of the guide tube to move the carrier magnet towards the penetrating end of the guide tube, the magnetic repulse field between the first driving magnet and the second driving magnet propels the carrier magnet toward the penetrating end of the guide tube. - View Dependent Claims (19, 20)
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Specification