Inflatable penile prosthesis with volume displacement materials and devices

1. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and at least one volume-displacing member occupying at least a portion of the cavity and comprising a bladder containing a volume of fluid, wherein the at least one volume-displacing member is smaller in at least one dimension than the dimensions of the cavity to provide an internal chamber at least partially surrounding the at least one volume-displacing member and adjacent to the inner wall of the cavity; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber;

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

2. The penile prosthesis device of claim 1 , wherein the device in its flaccid condition comprises the internal chamber having a first volume and the device in its rigid condition comprises the internal chamber having a second volume that is larger than the first volume, and wherein a volume of the cavity is the same when the device is in its flaccid condition and in its rigid condition.

3. The penile prosthesis device of claim 1 , wherein the internal chamber is annular.

4. The penile prosthesis device of claim 1 , wherein the bladder is at least partially compressible when a volume of fluid is transferred into the internal chamber.

5. The penile prosthesis device of claim 1 , wherein the at least one volume-displacing member further comprises a plurality of particles.

6. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and at least one volume-displacing member occupying at least a portion of the cavity, wherein the at least one volume-displacing member is smaller in at least one dimension than the dimensions of the cavity to provide an internal chamber at least partially surrounding the at least one volume-displacing member and adjacent to the inner wall of the cavity and wherein the volume-displacing member comprises a closed cylinder containing at least two elongated members extending along at least a portion of the length of the closed cylinder and positioned relative to each other within the cylinder to provide a predetermined flexibility, rigidity and strength to the body portion; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber;

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

7. The penile prosthesis device of claim 6 , wherein the at least one volume-displacing member comprises a closed cylinder containing at least three elongated members extending along at least a portion of the length of the closed cylinder.

8. The penile prosthesis device of claim 6 , wherein the closed cylinder comprises an outer wall that is collapsible to generally conform to the at least one elongated member contained within the closed cylinder when a sufficient amount of fluid is added to the internal chamber.

9. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and at least one volume-displacing member occupying at least a portion of the cavity and comprising a bladder containing a plurality of particles, wherein the at least one volume-displacing member is smaller in at least one dimension than the dimensions of the cavity to provide an internal chamber at least partially surrounding the at least one volume-displacing member and adjacent to the inner wall of the cavity; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber;

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

10. The penile prosthesis device of claim 9 , wherein the bladder further comprises a suspension material in which the plurality of particles is dispersed.

11. The penile prosthesis device of claim 9 , wherein the bladder comprises an outer wall that is collapsible to generally conform to the plurality of particles within bladder when a sufficient amount of fluid is added to the internal chamber.

12. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and at least one volume-displacing member occupying at least a portion of the cavity, wherein the at least one volume-displacing member is smaller in at least one dimension than the dimensions of the cavity to provide an internal chamber at least partially surrounding the at least one volume-displacing member and adjacent to the inner wall of the cavity and wherein the cavity comprises a first cavity portion separated from a second cavity portion by a divider that is moveable between the proximal end and distal end of the cavity to change the ratio of a volumetric capacity of the first cavity portion relative to a volumetric capacity of the second cavity portion; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber;

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

13. The penile prosthesis device of claim 12 , wherein the first cavity portion comprises at least one material that is at least partially compressible.

14. The penile prosthesis device of claim 12 , wherein the divider provides a fluid-tight seal between the first cavity portion and the second cavity portion.

15. The penile prosthesis device of claim 12 , wherein the divider is moveable toward the first cavity portion in response to the addition of material to the second cavity portion.

16. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and at least one volume-displacing member occupying at least a portion of the cavity, wherein the at least one volume-displacing member is smaller in at least one dimension than the dimensions of the cavity to provide an internal chamber at least partially surrounding the at least one volume-displacing member and adjacent to the inner wall of the cavity, and wherein the at least one volume-displacing member comprises an elongated member having a defined area of weakness with a lower strength than the rest of the elongated member to provide increased flexibility for the body portion adjacent the defined area of weakness; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber;

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

17. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and at least one volume-displacing member occupying at least a portion of the cavity, wherein the at least one volume-displacing member is smaller in at least one dimension than the dimensions of the cavity to provide an internal chamber at least partially surrounding the at least one volume-displacing member and adjacent to the inner wall of the cavity, and wherein the at least one volume-displacing member comprises an elongated member having a stiffening segment that is less flexible than the rest of the elongated member to provide less flexibility for the body portion adjacent the stiffening segment; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

18. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and at least one volume-displacing member occupying at least a portion of the cavity, wherein the at least one volume-displacing member is smaller in at least one dimension than the dimensions of the cavity to provide an internal chamber at least partially surrounding the at least one volume-displacing member and adjacent to the inner wall of the cavity, and wherein the volume-displacing member comprises a first hollow segment extending along at least a portion of the length of the cavity and a second segment extending along at least a portion of the length of the cavity, and wherein the second segment is at least partially inserted into the first segment and slideable relative to the first segment; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber;

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

19. A penile prosthesis device comprising:

a generally cylindrical body portion comprising a cavity with an inner wall, a proximal end, a distal end, and a particle chamber occupying at least a portion of the cavity, at least partially surrounding an internal chamber, and adjacent to the inner wall of the cavity, wherein the particle chamber contains a plurality of distinct particles dispersed throughout at least a portion of the length of the particle chamber; and

a fluid transfer tube extending from the body portion for transferring fluid to and from the internal chamber;

wherein the device is convertible from a flaccid condition to a rigid condition when a sufficient volume of fluid is transferred into the internal chamber to substantially fill the internal chamber.

20. The penile prosthesis device of claim 19 , wherein the particle chamber is a hollow cylindrical compartment that extends along at least a portion of the length of the cavity.

21. The penile prosthesis device of claim 19 , wherein the device in its flaccid condition includes the internal chamber having a first volume and the device in its rigid condition includes the internal chamber having a second volume that is larger than the first volume.