Infusion medium delivery system, device and method with needle inserter and needle inserter device and method
First Claim
1. A needle injector device for connection in fluid-flow communication with the inlet or outlet port of a reservoir, the needle injector comprising:
- a base structure for arranging adjacent a user'"'"'s skin;
a moveable carriage for supporting a hollow cannula for movement between a retracted position and an extended position;
at least one pivotal arm supported on the moveable carriage for pivotal motion relative to the base, between a first pivot position and a second pivot position;
a moveable needle supported by the base structure for movement between a retracted position and an extended position, the moveable needle having a shaft, the needle shaft having a piercing end for piercing the user'"'"'s skin when the base structure is arranged adjacent the user'"'"'s skin and the moveable needle is moved to the extended position, wherein the needle shaft has a sufficient length to extend through the cannula to extend the piercing end of the needle out one end of the cannula and move with the cannula between the retracted position and the extended position;
a first spring arranged to provide a first bias force at least when the needle is in the retracted position, the first bias force directed to bias the needle toward the extended position;
a second spring arranged to be held in a compressed state by the at least one pivotal arm, when the at least one pivotal arm is in the first pivot position and the moveable needle is moved to the extended position and, from that state, to be released to expand toward its natural state of uncompression upon the at least one pivotal arm moving to the second pivot position;
wherein, when (i) the base structure is arranged adjacent the user'"'"'s skin, (ii) the moveable needle and cannula are in the extended position and (iii) the second spring is released from its compressed state and expands toward its natural state of uncompression, a second bias force is provided on the needle by the second spring to move the needle from an extended position to a retracted position, while leaving the cannula in the user'"'"'s skin.
1 Assignment
0 Petitions
Accused Products
Abstract
An infusion medium delivery system, device and method for delivering an infusion medium to a patient-user, includes a needle inserter device and method for inserting a needle and/or cannula into a patient-user to convey the infusion medium to the patient-user. The needle inserter device and method operate to insert a needle and cannula into a patient-user'"'"'s skin and automatically withdraw the needle from the patient-user, leaving the cannula in place and in fluid flow communication with a reservoir. The delivery device may include a base portion and a durable portion connectable to the base portion, and wherein the base portion can be separated from the durable portion and disposed of after one or more specified number of uses. The base portion supports the reservoir and the needle inserter device, while the durable portion supports a drive device for selectively driving the infusion medium out of the reservoir and into the needle and/or cannula.
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Citations
32 Claims
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1. A needle injector device for connection in fluid-flow communication with the inlet or outlet port of a reservoir, the needle injector comprising:
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a base structure for arranging adjacent a user'"'"'s skin; a moveable carriage for supporting a hollow cannula for movement between a retracted position and an extended position; at least one pivotal arm supported on the moveable carriage for pivotal motion relative to the base, between a first pivot position and a second pivot position; a moveable needle supported by the base structure for movement between a retracted position and an extended position, the moveable needle having a shaft, the needle shaft having a piercing end for piercing the user'"'"'s skin when the base structure is arranged adjacent the user'"'"'s skin and the moveable needle is moved to the extended position, wherein the needle shaft has a sufficient length to extend through the cannula to extend the piercing end of the needle out one end of the cannula and move with the cannula between the retracted position and the extended position; a first spring arranged to provide a first bias force at least when the needle is in the retracted position, the first bias force directed to bias the needle toward the extended position; a second spring arranged to be held in a compressed state by the at least one pivotal arm, when the at least one pivotal arm is in the first pivot position and the moveable needle is moved to the extended position and, from that state, to be released to expand toward its natural state of uncompression upon the at least one pivotal arm moving to the second pivot position; wherein, when (i) the base structure is arranged adjacent the user'"'"'s skin, (ii) the moveable needle and cannula are in the extended position and (iii) the second spring is released from its compressed state and expands toward its natural state of uncompression, a second bias force is provided on the needle by the second spring to move the needle from an extended position to a retracted position, while leaving the cannula in the user'"'"'s skin. - View Dependent Claims (2, 3, 4, 5, 6, 23, 24, 25, 29)
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7. A needle injector device for connection in fluid-flow communication with the inlet or outlet port of a reservoir, the needle injector comprising:
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a base structure for arranging adjacent a user'"'"'s skin; a moveable carriage for supporting a hollow cannula for movement between a retracted position and an extended position; at least one moveable locking member supported on the moveable carriage for motion relative to the base, between at least one first position and at least one second position; a moveable needle supported by the base structure for movement with the moveable carriage between a retracted position and an extended position, the moveable needle having a shaft, the needle shaft having a piercing end for piercing the user'"'"'s skin when the base structure is arranged adjacent the user'"'"'s skin and the moveable needle is moved to the extended position, a first bias member arranged to provide a first bias force on the needle at least when the needle is in the retracted position, the first bias force directed to bias the needle toward the extended position; a second bias member arranged to be held by the at least one moveable locking member in a state at which the second bias member stores a bias energy when the moveable needle is moved to the extended position and the at least one moveable locking member is in one of the first positions and, from that state, to a state at which the stored bias energy is released to apply a force on the needle to move the needle toward the retracted position, when the at least one moveable locking member is moved to one of the second positions; and the second bias member being held by the at least one moveable locking member in a state at which the second bias member stores a bias energy when the moveable needle and the carriage are both in the retracted position. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 26, 27, 28, 30, 32)
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18. A delivery device for delivering an infusion medium to a user, the delivery device comprising:
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a housing structure, the housing structure having an injection site portion; a reservoir supported by the housing structure, the reservoir having an interior for containing an infusion medium, a needle injector supported by the injection site portion of the housing structure and connected in fluid flow communication with the interior of the reservoir, the needle injector comprising; a base structure for arranging adjacent a user'"'"'s skin; a moveable carriage for supporting a hollow cannula for movement between a retracted position and an extended position; at least one moveable locking member supported on the moveable carriage for motion relative to the base, between at least one first position and at least one second position; a moveable needle supported by the base structure for movement with the moveable carriage between a retracted position and an extended position, the moveable needle having a shaft, the needle shaft having a piercing end for piercing the user'"'"'s skin when the base structure is arranged adjacent the user'"'"'s skin and the moveable needle is moved to the extended position, a first bias member arranged to provide a first bias force on the needle at least when the needle is in the retracted position, the first bias force directed to bias the needle toward the extended position; a second bias member arranged to be held by the at least one moveable locking member in a state at which the second bias member stores a bias energy when the moveable needle is moved to the extended position and the at least one moveable locking member is in one of the first positions and, from that state, to a state at which the stored bias energy is released to apply a force on the needle to move the needle toward the retracted position, when the at least one moveable locking member is moved to one of the second positions; and the second bias member being held by the at least one moveable locking member in a state at which the second bias member stores a bias energy when the moveable needle and the carriage are both in the retracted position. - View Dependent Claims (19, 20, 21, 22, 31)
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Specification