Low profile inlet valve for a piston pump therapeutic substance delivery device

An implantable therapeutic substance delivery device with a low profile inlet valve, comprising:

• a housing;
• a therapeutic substance reservoir coupled to the housing, the therapeutic substance reservoir having a reservoir outlet;
• a power source carried in the housing;
• electronics carried in the housing and coupled to the power source;
• means for pumping coupled to the electronics and coupled to the reservoir outlet, the means for pumping configured to pump a therapeutic substance from the therapeutic substance reservoir through an infusion outlet at a programmed rate;
• and,
• means for inlet valving configured to control the flow of therapeutic substance from the reservoir outlet into a pumping chamber, wherein the means for inlet valving is configured to control the flow of therapeutic substance from an inlet chamber into a pumping chamber.

An implantable therapeutic substance delivery device with a low profile inlet valve, comprising:

• a housing;
• a therapeutic substance reservoir coupled to the housing, the therapeutic substance reservoir having a reservoir outlet;
• a power source carried in the housing;
• electronics carried in the housing and coupled to the power source;
• means for pumping coupled to the electronics and coupled to the reservoir outlet, the means for pumping configured to pump a therapeutic substance from the therapeutic substance reservoir through an infusion outlet at a programmed rate;
• and,
• means for inlet valving configured to control the flow of therapeutic substance from the reservoir outlet into a pumping chamber, wherein the means for inlet valving is configured to facilitate the means for pumping's ability to pass air.

An implantable therapeutic substance delivery device with a low profile inlet valve, comprising:

• a housing;
• a therapeutic substance reservoir coupled to the housing, the therapeutic substance reservoir having a reservoir outlet;
• a power source carried in the housing;
• electronics carried in the housing and coupled to the power source;
• means for pumping coupled to the electronics and coupled to the reservoir outlet, the means for pumping configured to pump a therapeutic substance from the therapeutic substance reservoir through an infusion outlet at a programmed rate;
• and,
• means for inlet valving configured to control the flow of therapeutic substance from the reservoir outlet into a pumping chamber, wherein the means for inlet valving is configured to be mechanically held closed when the means for pumping is in an actuated position to substantially prevent unintended infusion of therapeutic substance.