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 housing structure;
a moveable needle supported by the housing structure for movement between a retracted position and an extended position;
a needle carriage supported for movement by the housing structure with the moveable needle, between the retracted position and the extended position, the needle carriage having a needle passage through which the moveable needle extends when the moveable needle and needle carriage are in the retracted position and moving toward the extended position;
a hollow needle or cannula attached to the needle carriage and moveable with the needle carriage between the retracted position and the extended position, the hollow needle or cannula having a central passage through which the moveable needle extends when the moveable needle, needle carriage and hollow needle or cannula are in the retracted position and moving toward the extended position;
a locking structure for locking the needle carriage and hollow needle or cannula in the extended position, upon the needle carriage and hollow needle or cannula being moved to the extended position;
a bias member operatively coupled to the moveable needle, for withdrawing the moveable needle from at least a portion of the hollow needle or cannula, once the needle carriage and hollow needle or cannula are locked in the extended position by the locking structure.
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.
334 Citations
30 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 housing structure; a moveable needle supported by the housing structure for movement between a retracted position and an extended position; a needle carriage supported for movement by the housing structure with the moveable needle, between the retracted position and the extended position, the needle carriage having a needle passage through which the moveable needle extends when the moveable needle and needle carriage are in the retracted position and moving toward the extended position; a hollow needle or cannula attached to the needle carriage and moveable with the needle carriage between the retracted position and the extended position, the hollow needle or cannula having a central passage through which the moveable needle extends when the moveable needle, needle carriage and hollow needle or cannula are in the retracted position and moving toward the extended position; a locking structure for locking the needle carriage and hollow needle or cannula in the extended position, upon the needle carriage and hollow needle or cannula being moved to the extended position; a bias member operatively coupled to the moveable needle, for withdrawing the moveable needle from at least a portion of the hollow needle or cannula, once the needle carriage and hollow needle or cannula are locked in the extended position by the locking structure. - 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, 24, 25)
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26. A delivery device for delivering an infusion medium to a user, the device comprising:
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a housing structure adapted to be secured to a user'"'"'s skin; a reservoir having an interior for containing a fluidic medium, the reservoir having an outlet port and being operatively coupled to a drive device to selectively drive fluid out the outlet port, from the reservoir interior; a channel having a longitudinal axis extending through the housing structure and having a first end open toward the user'"'"'s skin when the housing structure is secured to the user'"'"'s skin, the channel having a second end that may be open to operate with a needle injector; at least one flexible pawl arranged adjacent the channel and spaced from the channel axis; a cannula and cannula nest having, an engagement surface, the cannula and cannula nest having a size and shape capable of insertion into the channel to an extended position, wherein the cannula extends into the user'"'"'s skin upon the cannula and cannula nest being in the extended position and the housing structure being secured to the user'"'"'s skin and wherein the engagement surface of the cannula and cannula nest is arranged to be engaged by the flexible pawl, upon the cannula and cannula nest being in the extended position, to hold the cannula and cannula nest in the extended position. - View Dependent Claims (27, 28, 29)
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30. A delivery device for delivering an infusion medium to a user, the device comprising:
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a housing structure adapted to be secured to a user'"'"'s skin; a reservoir having an interior for containing a fluidic medium, the reservoir having an outlet port and being operatively coupled to a drive device to selectively drive fluid out the outlet port, from the reservoir interior; a needle injector device coupled in fluid-flow communication with the outlet port of the reservoir, for inserting a hollow needle or cannula into the user'"'"'s skin, upon the housing structure being secured to the user'"'"'s skin, the needle injector device comprising; a moveable needle supported by the housing structure for movement between a retracted position and an extended position; a needle carriage supported for movement by the housing structure with the moveable needle, between the retracted position and the extended position, the needle carriage having a passage through which the moveable needle extends when the moveable needle and needle carriage are in the retracted position and moving toward the extended position; a hollow needle or cannula attached to the needle carriage and moveable with the needle carriage between the retracted position and the extended position, the hollow needle or cannula having a central passage through which the moveable needle extends when the moveable needle, needle carriage and hollow needle or cannula are in the retracted position and moving toward the extended position; a locking structure for locking the needle carriage and hollow needle or cannula in the extended position, upon the needle carriage and hollow needle or cannula being moved to the extended position; a bias member operatively coupled to the moveable needle, for withdrawing the moveable needle from at least a portion of the hollow needle or cannula, once the needle carriage and hollow needle or cannula are locked in the extended position by the locking structure.
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Specification