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 having an interior surface surrounding a generally hollow interior volume that is in a generally cylindrical shape having a first end and a second end, the interior surface having a central axis that passes through the first end and the second end of the generally cylindrical shaped interior volume, the interior surface having an inner circumference, a first groove forming a generally spiral path around at least a portion of the inner circumference and a second groove extending in a generally linear path that is generally parallel to the central axis;
a moveable cam member supported for movement within the interior volume of the housing between a retracted position and an extended position, the cam member having a projection for extending into the first and second grooves, the cam member for supporting a needle for movement with the cam member between the retracted position and extended position;
wherein when the moveable cam is in the retracted position the needle is within the generally hollow interior volume of the housing;
wherein when the moveable cam is in the extended position a portion of the needle extends out of the housing;
at least one bias member for imparting on the moveable cam member, a rotary force around the central axis, and a linear force in a direction parallel to the central axis, the rotary force is applied on the moveable cam member and moves the moveable cam member along the spiral path and the linear force is applied in a direction toward the retracted position;
a stop structure for engaging and holding the moveable cam member in the retracted position;
wherein, when the moveable cam member is held in the retracted position by the stop surface, the moveable cam member that selectively disengages from the stop structure and moves from the retracted position to the extended position, in a rotary direction around the central axis and simultaneously in a direction generally parallel to the central axis, while the cam projection follows the spiral path of the first groove;
wherein the projection of the cam member engages the spiral path of the first groove due to the rotary force of the at least one bias member when the cam member is pushed toward the extended position; and
wherein, when the moveable cam member is in the extended position, the moveable cam member moves from the extended position toward the retracted position, in a generally linear direction that is generally parallel to the central axis, while the cam projection follows the generally linear path of the second groove due to the linear force applied by the at least one bias member.
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.
206 Citations
26 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 having an interior surface surrounding a generally hollow interior volume that is in a generally cylindrical shape having a first end and a second end, the interior surface having a central axis that passes through the first end and the second end of the generally cylindrical shaped interior volume, the interior surface having an inner circumference, a first groove forming a generally spiral path around at least a portion of the inner circumference and a second groove extending in a generally linear path that is generally parallel to the central axis; a moveable cam member supported for movement within the interior volume of the housing between a retracted position and an extended position, the cam member having a projection for extending into the first and second grooves, the cam member for supporting a needle for movement with the cam member between the retracted position and extended position; wherein when the moveable cam is in the retracted position the needle is within the generally hollow interior volume of the housing; wherein when the moveable cam is in the extended position a portion of the needle extends out of the housing; at least one bias member for imparting on the moveable cam member, a rotary force around the central axis, and a linear force in a direction parallel to the central axis, the rotary force is applied on the moveable cam member and moves the moveable cam member along the spiral path and the linear force is applied in a direction toward the retracted position; a stop structure for engaging and holding the moveable cam member in the retracted position; wherein, when the moveable cam member is held in the retracted position by the stop surface, the moveable cam member that selectively disengages from the stop structure and moves from the retracted position to the extended position, in a rotary direction around the central axis and simultaneously in a direction generally parallel to the central axis, while the cam projection follows the spiral path of the first groove; wherein the projection of the cam member engages the spiral path of the first groove due to the rotary force of the at least one bias member when the cam member is pushed toward the extended position; and wherein, when the moveable cam member is in the extended position, the moveable cam member moves from the extended position toward the retracted position, in a generally linear direction that is generally parallel to the central axis, while the cam projection follows the generally linear path of the second groove due to the linear force applied by the at least one bias member. - View Dependent Claims (2, 3, 4, 5, 6, 19, 20, 23, 24, 25, 26)
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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 housing having a generally cylindrical interior surface surrounding a generally cylindrical hollow interior volume having a first end and a second end, the generally cylindrical interior surface having a central axis that passes through the first and second ends of the generally cylindrical shaped interior volume, the interior surface having and an inner circumference; a moveable cam member supported for movement within the interior volume of the housing between a retracted position and an extended position, wherein either one of the interior surface of the housing or the cam member has a groove and the other has a projection for extending within the groove, and wherein the groove or projection on the interior surface of the housing forms a generally spiral first path around at least a portion of the inner circumference of the interior surface of the housing and a generally linear second path that is generally parallel to the central axis; wherein when the moveable cam is in the retracted position the needle occupies the generally hollow interior volume of the housing; wherein when the moveable cam is in the extended position portions of the needle extend out of the housing; at least one bias member for imparting on the moveable cam member, a rotary force around the central axis and a linear force in a direction parallel to the central axis, the rotary force applied on the moveable cam member to move the moveable cam member along the spiral path and the linear force is applied in a direction toward the retracted position; a stop structure for engaging and holding the moveable cam member in the retracted position; wherein, when the moveable cam member is held in the retracted position by the stop surface, the moveable cam member that selectively disengages from the stop structure and moves from the retracted position to the extended position, in a rotary direction around the central axis and simultaneously in a direction generally parallel to the central axis, while the groove or projection on the cam member follows the spiral first path; wherein the projection is configured to engage the spiral path of the first groove due to the rotary force of the at least one bias member when the cam member is pushed toward the extended position; and wherein, when the moveable cam member is in the extended position, the moveable cam member moves from the extended position toward the retracted position, in a generally linear direction that is generally parallel to the central axis, while the groove or projection on the cam member follows the generally linear second path. - View Dependent Claims (8, 9, 11, 12, 13, 21, 22)
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10. 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 having a generally cylindrical interior surface surrounding a generally cylindrical hollow interior volume having a first end and a second end, the generally cylindrical interior surface having a central axis that passes through the first end and the second end of the generally cylindrical interior volume, the interior surface having and an inner circumference; a moveable cam member supported for movement within the interior volume of the housing between a retracted position and an extended position, wherein either one of the interior surface of the housing or the cam member has a groove and the other has a projection for extending within the groove, and wherein the groove or projection on the interior surface of the housing forms a generally spiral first path around at least a portion of the inner circumference of the interior surface of the housing and a generally continuous linear second path that is generally parallel to the central axis; wherein when the moveable cam is in the retracted position the needle is within the generally hollow interior volume of the housing; wherein when the moveable cam is in the extended position portions of the needle extend out of the housing; at least one bias member for imparting on the moveable cam member, a rotary force around the central axis, the rotary force is applied on the moveable cam member to move the moveable cam member along the spiral path and a linear force in a direction parallel to the central axis, the linear force is applied in a direction toward the retracted position; a stop structure for engaging and holding the moveable cam member in the retracted position; wherein, when the moveable cam member is held in the retracted position by the stop surface, the moveable cam member that selectively disengages from the stop structure and moves from the retracted position to the extended position, in a rotary direction around the central axis and simultaneously in a direction generally parallel to the central axis, while the groove or projection on the cam member follows the spiral first path; wherein the projection of the cam member is configured to engage the spiral path of the first groove due to the rotary force of the at least one bias member when the cam member when the cam member is pushed toward the extended position; and wherein, when the moveable cam member is in the extended position, the moveable cam member moves from the extended position toward the retracted position, in a generally linear direction that is generally parallel to the central axis, while the groove or projection on the cam member follows the generally continuous linear second path; and wherein the generally continuous linear second path connects to the generally spiral first path adjacent each end of the housing.
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14. 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 having a generally hollow interior volume and a generally linear channel; a rotary cam member supported for rotary movement about an axis of rotation within the interior volume of the housing, the rotary cam member having a cam surface that is at an obtuse angle relative to the axis of rotation; a needle carriage supported for movement within the housing between a retracted position and an extended position; a cannula secured to the needle carriage for movement with the needle carriage between the retracted position and the extended position of the needle carriage; a needle having a shaft that extends through the cannula and provided with a piercing end and a second, opposite end, the second end of the needle is attached to the cam surface, during rotary movement of the cam member about the central axis, for moving the needle carriage and cannula from the retracted position to the extended position upon rotation of the rotary cam member; a coupler for coupling the needle carriage in the extended position, upon movement of the needle carriage and cannula to the extended position; and a bias member operatively connected to the rotary cam member, to impart a rotational force on the rotary cam, to selectively move the needle between the retracted position and the extended position. - View Dependent Claims (15, 16, 17, 18)
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Specification