Implant and delivery tool therefor
An implant system including a transurethral prostatic implant positioned in a prostate and including a lumen with an inner perimeter that surrounds an outer perimeter of a urethra at the prostate. The implant system may include a delivery tool including a shaft having a distal portion and an implant-holding portion proximal to the distal portion, the distal portion being sized for entry into a urethra, and the implant-holding portion being thicker than the distal portion, and an implant positioned on the implant-holding portion.
1. A method, comprising:
advancing a delivery tool through a urethra of a patient;
from within the urethra, with the delivery tool, opening a portion of the urethra from a constricted diameter thereof to an opened diameter thereof; and
while the portion of the urethra is at the opened diameter, maintaining an area for urine to pass through the urethra, by implanting in tissue of a prostate, outside of the portion of the urethra, at least one implant advanced thereto by the delivery tool.
2. The method according to claim 1 , further comprising enlarging the area for urine to pass through the urethra in conjunction with implanting the implant in the tissue of the prostate outside of the portion of the urethra.
3. The method according to claim 1 , wherein implanting the implant in the tissue of the prostate outside of the portion of the urethra comprises supporting the tissue of the prostate outside of the portion of the urethra.
4. The method according to claim 1 , wherein maintaining the area for urine to pass through the urethra comprises supporting the tissue of the prostate outside of the portion of the urethra.
5. The method according to claim 1 , wherein opening the portion of the urethra comprises pushing radially against the portion of the urethra, and wherein maintaining the area for urine to pass through comprises supporting the tissue of the prostate outside of the portion of the urethra.
6. The method according to claim 5 , wherein supporting the tissue of the prostate outside of the portion of the urethra comprises maintaining the opened diameter of the portion of the urethra.
7. Apparatus, comprising:
at least one transurethrally-deliverable prostatic implant;
a delivery tool advanceable through a urethra of a patient, the tool comprising:
an implant-holding portion configured to hold the implant during advancement of the delivery tool through the urethra; and
a urethra-opening portion thereof configured to open a portion of the urethra from a constricted diameter thereof to an opened diameter thereof,
the delivery tool being configured to implant the at least one implant in tissue of a prostate, outside of the portion of the urethra while the portion of the urethra is at the opened diameter, and
the implant being configured to maintain an area for urine to pass through the urethra.
8. The apparatus according to claim 7 , wherein the implant-holding portion has a longest dimension measured at its cross-section that is different from a longest dimension measured at a cross-section of the urethra-opening portion.
9. The apparatus according to claim 7 , wherein the implant comprises a plurality of coils configured to corkscrew into the tissue of the prostate.
10. The apparatus according to claim 9 , wherein the plurality of coils define a lumen with an inner perimeter sized to surround an outer perimeter of the portion of the urethra.
11. The apparatus according to claim 7 , wherein the urethra-opening portion is configured to push radially against at least the portion of the urethra, and wherein the implant is configured to maintain the area for urine to pass through by supporting the tissue of the prostate outside of the portion of the urethra.
12. The method according to claim 11 , wherein the implant is configured to maintain the opened diameter of the portion of the urethra.