Retention systems and methods

A system for retaining a fluid delivery device in a housing, the fluid delivery device comprising a reservoir and a plunger arm operatively connected to a plunger head arranged for movement in an axial direction within the reservoir, the plunger arm having an arm portion operatively engageable with a drive member configured to move the plunger arm and the plunger head in the axial direction when the plunger arm and the plunger head are connected to the drive member, the system comprising:

• a rigid member arranged for movement;
• and
• a bias member configured to move the rigid member to bias the plunger arm in a first direction against the drive member to operatively engage the drive member for movement by the drive member in the axial direction;
• wherein the first direction is transverse to the axial direction;
• and
• wherein the bias member is further configured to urge the rigid member such that the rigid member provides a force against the casing in a first direction to cause the casing to urge the plunger arm against the drive member, and in a second direction to urge the casing against a surface of the housing, the second direction being transverse to the first direction.

A system for retaining a fluid delivery device in a housing, the fluid delivery device comprising a reservoir, the system comprising:

• a plunger arm operatively connected to a plunger head arranged for movement in an axial direction within the reservoir, the plunger arm having an arm portion operatively engageable with a drive member configured to move the plunger arm and the plunger head in the axial direction when the plunger arm and the plunger head are connected to the drive member;
• a casing arranged between the plunger arm and the drive member, the casing configured to support the plunger arm and to envelop at least a portion of the plunger arm,
• a rigid member arranged for movement;
• and
• a bias member configured to move the rigid member to bias the plunger arm in a first direction against the drive member to operatively engage the drive member for movement by the drive member in the axial direction;
• wherein the first direction is transverse to the axial direction;
• wherein the rigid member has a contact surface for engaging the casing;
• and
• wherein the contact surface is substantially flat.

A method of manufacturing a system for retaining a fluid delivery device in a housing, the fluid delivery device comprising a reservoir, the method comprising:

• connecting a plunger arm to a plunger head arranged for movement in an axial direction within the reservoir, the plunger arm having an arm portion operatively engageable with a drive member configured to move the plunger arm and the plunger head in the axial direction when the plunger arm and the plunger head are connected to the drive member;
• arranging a casing between the plunger arm and the drive member, the casing configured to support the plunger arm and to envelop at least a portion of the plunger arm, the casing having an opening for allowing the arm portion of the plunger arm to operatively engage the drive member;
• arranging a rigid member for movement;
• and
• configuring a bias member to move the rigid member to bias the plunger arm in a first direction against the drive member to operatively engage the drive member for movement by the drive member in the axial direction;
• wherein the first direction is transverse to the axial direction.

A system for retaining a fluid delivery device, the fluid delivery device comprising a reservoir and a plunger arm operatively connectable to a plunger head that is moveable within the reservoir, the plunger arm having an arm portion that is configured for operative engagement to a drive member configured to move the arm portion and the plunger head when the arm portion of the plunger arm is operatively engaged to the drive, the system comprising:

• a housing configured to support the plunger arm and the reservoir, the housing having a recess for receiving the plunger arm;
• the housing having a pair of protrusions arranged around the recess, the protrusions separated by a gap though which the plunger arm is received into the recess;
• the protrusions configured to allow the plunger arm to be forced between the protrusions and received into the recess from a position outside of the recess when a first amount of force is applied on the plunger arm toward the recess;
• the protrusions configured to prevent the plunger arm from being removed from the recess using the first amount of force when the plunger arm is in the recess;
• the protrusions configured to allow the plunger arm to be removed from the recess through the gap between the protrusions to a position outside of the recess when a second amount of force is applied on the plunger arm away from the recess, the second amount of force being greater than the first amount of force.

A method of manufacturing a system for retaining a fluid delivery device, the fluid delivery device comprising a reservoir and a plunger arm operatively connectable to a plunger head that is moveable within the reservoir, the plunger arm having an arm portion that is configured for operative engagement to a drive member configured to move the arm portion and the plunger head when the arm portion of the plunger arm is operatively engaged to the drive, the method comprising:

• configuring a housing to support the plunger arm and the reservoir, the housing having a recess for receiving the plunger arm;
• and
• arranging in the housing a pair of protrusions around the recess, the protrusions separated by a gap through which the plunger arm is received into the recess;
• the protrusions configured to allow the plunger arm to be forced between the protrusions and received into the recess from a position outside of the recess when a first amount of force is applied on the plunger arm toward the recess;
• the protrusions configured to prevent the plunger arm from being removed from the recess using the first amount of force when the plunger arm is in the recess;
• the protrusions configured to allow the plunger arm to be removed from the recess through the gap between the protrusions to a position outside of the recess when a second amount of force is applied on the plunger arm away from the recess, the second amount of force being greater than the first amount of force.

A delivery system for delivering fluidic media to a user, the delivery system comprising:

• a first housing portion adapted to be carried by a user;
• a second housing portion configured to be selectively operatively engaged with and disengaged from the first housing portion, one of the first housing portion and the second housing portion supporting a reservoir having an interior volume for containing fluidic media and a plunger head moveable within the interior volume of the reservoir along an axial direction of the reservoir, the plunger head operatively connected to a plunger arm;
• a drive device supported by the other of the first housing portion and the second housing portion relative to the one of the first housing portion and the second housing portion supporting the reservoir such that upon the first housing portion and the second housing portion being operatively engaged, the reservoir is operatively coupled to the drive device to allow the drive device to move the plunger head via the plunger arm within the interior volume of the reservoir;
• a pair of interactive elements including a first interactive element supported on the first housing portion and a second interactive element supported on the second housing portion at a location to be interactable with the first interactive element, the first interactive element comprising a protruding member arranged for movement by the drive device along with the plunger arm and the plunger head, the protruding member for interacting with the second interactive element in a case where the first housing portion and the second housing portion are operatively engaged;
• and
• electronic circuitry configured to provide a signal or a change in state in response to the protruding member interacting with the second interactive element when the first housing portion and the second housing portion are operatively engaged.

A method of manufacturing a delivery system for delivering fluidic media to a user, the method comprising:

• adapting a first housing portion to be carried by a user;
• configuring a second housing portion to be selectively operatively engaged with and disengaged from the first housing portion, one of the first housing portion and the second housing portion supporting a reservoir having an interior volume for containing fluidic media and a plunger head moveable within the interior volume of the reservoir along an axial direction of the reservoir, the plunger head operatively connected to a plunger arm;
• supporting a drive device by the other of the first housing portion and the second housing portion relative to the one of the first housing portion and the second housing portion supporting the reservoir such that upon the first housing portion and the second housing portion being operatively engaged, the reservoir is operatively coupled to the drive device to allow the drive device to move the plunger head via the plunger arm within the interior volume of the reservoir;
• supporting a pair of interactive elements including a first interactive element supported on the first housing portion and a second interactive element supported on the second housing portion at a location to be interactable with the first interactive element, the first interactive element comprising a protruding member arranged for movement by the drive device along with the plunger arm and the plunger head, the protruding member for interacting with the second interactive element in a case where the first housing portion and the second housing portion are operatively engaged;
• and
• configuring electronic circuitry to provide a signal or a change in state in response to the protruding member interacting with the second interactive element when the first housing portion and the second housing portion are operatively engaged.