Implantable penile prosthesis pump

1. A pump for transferring fluid between a fluid reservoir and at least one inflatable penile prosthesis, the pump comprising:

a pump housing having a fluid passageway;

first and second fluid ports in fluid communication with the fluid passageway and operatively connectable to a fluid reservoir and at least one inflatable penile prosthesis, respectively;

a pump bulb in fluid communication with the fluid passageway that can be operated to transfer fluid between the first and second fluid ports through the fluid passageway;

a poppet positioned within the fluid passageway, the poppet having an extending portion extending away from a body portion of the poppet, the extending portion having a sealing surface biased toward a valve seat within the fluid passageway;

a flange extending from a surface of the fluid passageway and toward the interior of the fluid passageway and spaced from the valve seat within the fluid passageway; and

a fluid path between the extending portion of the poppet and the flange when the extending portion of poppet is in contact with the flange wherein the fluid path can allow fluid to pass from one side of the flange to the other.

2. The pump of claim 1 , wherein the extending portion of the poppet is annular.

3. The pump of claim 2 , wherein an end of the extending portion of the poppet comprises a chamfer.

4. The pump of claim 1 , wherein the flange is annular.

5. The pump of claim 1 , wherein the flange comprises one or more projections extending from a surface of the flange that provide at least a portion of the fluid path between the extending portion of the poppet and the flange when the extending portion of the poppet is in contact with the flange.

6. The pump of claim 1 , comprising first and second poppets positioned within the fluid passageway aligned along a valve axis and biased toward first and second valve seats within the fluid passageway, respectively.

7. The pump of claim 6 , wherein the first poppet comprises an end slidingly engaged with an end of the second poppet.

8. The pump of claim 6 , further comprising a bypass chamber fluidly connected by a bypass input channel to the fluid passageway at a first location and fluidly connected by a bypass output channel to the fluid passageway at a second location, the bypass chamber comprising a bypass check valve biased toward a closed position along a check valve axis.

9. The pump of claim 8 , wherein the check valve axis is oriented in a non-parallel manner with respect to the valve axis of the first and second poppets.

10. The pump of claim 1 , in combination with at least one of a reservoir and at least one inflatable penile prosthesis.

11. A pump for transferring fluid between a fluid reservoir and at least one inflatable penile prosthesis, the pump comprising:

a pump housing having a fluid passageway;

first and second fluid ports in fluid communication with the fluid passageway and operatively connectable to a fluid reservoir and at least one inflatable penile prosthesis, respectively;

a pump bulb in fluid communication with the fluid passageway that can be operated to transfer fluid between the first and second fluid ports through the fluid passageway; and

first and second poppets positioned within the fluid passageway and biased toward first and second valve seats within the fluid passageway, respectively, the first poppet having an end slidingly engaged with an end of the second poppet.

12. The pump of claim 11 , wherein the first and second poppets are provided along a valve axis.

13. The pump of claim 12 , wherein the end of the first poppet comprises an extension portion that extends along the valve axis.

14. The pump of claim 13 , wherein the extension portion of the first poppet is slidingly positioned in a receiver at the end of the second poppet.

15. The pump of claim 12 , further comprising a bypass chamber fluidly connected by a bypass input channel to the fluid passageway at a first location and fluidly connected by a bypass output channel to the fluid passageway at a second location, the bypass chamber comprising a bypass check valve biased toward a closed position along a check valve axis.

16. The pump of claim 15 , wherein the check valve axis is oriented in a non-parallel manner with respect to the valve axis of the first and second poppets.

17. A pump for transferring fluid between a fluid reservoir and at least one inflatable penile prosthesis, the pump comprising:

a pump housing having a fluid passageway;

first and second fluid ports in fluid communication with the fluid passageway and operatively connectable to a fluid reservoir and at least one inflatable penile prosthesis, respectively;

a pump bulb in fluid communication with the fluid passageway that can be operated to transfer fluid between the first and second fluid ports through the fluid passageway; and

first and second poppets positioned within the fluid passageway, aligned along a valve axis, and biased toward first and second valve seats within the fluid passageway, respectively; and

a bypass chamber fluidly connected by a bypass input channel to the fluid passageway at a first location and fluidly connected by a bypass output channel to the fluid passageway at a second location, the bypass chamber comprising a bypass check valve biased toward a closed position along a check valve axis and wherein the check valve axis is oriented in a generally perpendicular manner with respect to the valve axis of the first and second poppets.

18. The pump of claim 17 , wherein pump housing comprises a short axis perpendicular to a long axis and wherein the valve axis is parallel to the short axis.

19. The pump of claim 17 , wherein the housing comprises a pad provided on the valve axis and aligned with the first poppet for manipulating the first poppet.