# US 2008/0188811 A1 · Apparatus and method for prostatic tissue removal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2008/0188811 A1 - Document ID: US20080188811A1 - Status: Published application - Kind: A1 - Application number: 11/969,587 - Filed: 2008-01-04 - Published: 2008-08-07 - Earliest claimed: 2007-01-05 - Assignees: Urokinetics Inc. - Inventors: Daniel H. Kim - Web page: https://patentgrep.com/patent/US20080188811A1 ## CPC - A61B 17/320725: {with radially expandable cutting or abrading elements (A61B17/32075 takes precedence)} - A61B 17/320758: {with a rotating cutting instrument, e.g. motor driven (A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002)} - A61B 18/1485: {having a short rigid shaft for accessing the inner body through natural openings} - A61B 18/20: using laser - A61B 2017/00274: {Prostate operation, e.g. prostatectomy, turp, bhp treatment} - A61B 2017/00685: {Archimedes screw} - A61B 2017/00867: {shape memory effect} - A61B 2017/22077: {with a part piercing the tissue (A61B2017/22044 takes precedence)} - A61B 2017/320775: {Morcellators, impeller or propeller like means} - A61B 2018/00547: {Prostate} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Methods and apparatus for medical treating prostatic tissues are provided. In one embodiment, the method includes removing prostatic tissues adjacent the urethra and enlarging the lumen of the urethra, whereby the treatment conserves a natural wall of the urethra. ## Claims ### Claim 1 A method of removing a tissue of a prostate proximate a urethra having an inner lining, comprising: positioning a catheter in the urethra; inserting a mechanical debrider through the catheter positioning the mechanical debrider in the prostate proximate the tissue to be removed; rotating the mechanical debrider against the tissue; and removing the prostatic tissue, thereby forming a cavity adjacent the inner lining of the urethra. ### Claim 2 (depends on 1) The method of claim 1, further comprising expanding an expandable member in the urethra. ### Claim 3 (depends on 2) The method of claim 2, wherein the expandable member is expanded during rotation of the mechanical debrider. ### Claim 4 (depends on 2) The method of claim 2, wherein the expandable member comprises an inflatable balloon. ### Claim 5 (depends on 1) The method of claim 1, wherein further comprising re-positioning mechanical debrider and forming a second cavity adjacent the urethra. ### Claim 6 (depends on 5) The method of claim 5, wherein the first cavity and the second cavity are in fluid communication. ### Claim 7 (depends on 1) The method of claim 1, further comprising inserting a guide member through the catheter and into the prostate. ### Claim 8 (depends on 7) The method of claim 7, wherein the mechanical debrider is inserted through the guide member. ### Claim 9 (depends on 7) The method of claim 7, further comprising expanding an expandable member in the urethra during rotation of the debrider. ### Claim 10 (depends on 1) The method of claim 1, wherein removing the tissue is achieved via rotation of the debrider. ### Claim 11 (depends on 10) The method of claim 10, wherein the debrider comprises an auger portion for removing the tissue. ### Claim 12 (depends on 1) The method of claim 1, further comprising applying thermal energy to the tissue. ### Claim 13 (depends on 1) The method of claim 1, further comprising adjusting a diameter of the debrider. ### Claim 14 (depends on 1) The method of claim 1, further comprising enlarging a lumen of the urethra. ### Claim 15 (depends on 14) The method of claim 14, further comprising positioning a stent in the enlarged lumen. ### Claim 16 (depends on 15) The method of claim 15, further comprising enlarging the stent. ### Claim 17 The method of clam 16, wherein an expandable member is used to enlarge the lumen. ### Claim 18 (depends on 15) The method of claim 15, further comprising removing the stent. ### Claim 19 (depends on 18) The method of claim 18, wherein removing the stent comprises inflating a first expandable member before the stent and a second expandable member after the stent. ### Claim 20 A medical device, comprising: a catheter having a first channel and a second channel; a first medical tool positioned in the first channel; a mechanical debrider positioned in the second channel, wherein the debrider includes an outer tube and a tissue removal member. ### Claim 21 (depends on 20) The medical device of claim 20, further comprising a cannula positioned in the second channel and at least partially housing the mechanical debrider. ### Claim 22 (depends on 21) The medical device of claim 21, wherein the cannula includes a guide member. ### Claim 23 (depends on 22) The medical device of claim of claim 22, wherein the guide member includes an angled tip. ### Claim 24 (depends on 21) The medical device of claim 21, wherein the cannula is rotatable. ### Claim 25 (depends on 20) The medical device of claim 20, further comprising an expandable member. ### Claim 26 (depends on 20) The medical device of claim 20, wherein the debrider further includes an auger portion. ### Claim 27 (depends on 20) The medical device of claim 20, wherein the tissue removal member comprises a blade. ### Claim 28 (depends on 27) The medical device of claim 27, wherein the blade comprises memory metal. ### Claim 29 (depends on 20) The medical device of claim 20, wherein a diameter of the tissue removal member is adjustable. ### Claim 30 (depends on 20) The medical device of claim 20, wherein the debrider is connected to a thermal energy source. ### Claim 31 A medical device, comprising: a catheter; an endoscope positioned in the catheter; and a mechanical debrider extending out of the catheter, wherein the debrider includes an outer tube and a tissue removal member.