# US 10,869,710 B2 · Treatment device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,869,710 B2 - Document ID: US10869710B2 - Status: Granted - Kind: B2 - Application number: 15/445,803 - Filed: 2017-02-28 - Published: 2017-08-31 - Granted: 2020-12-22 - Earliest claimed: 2016-02-29 - Assignees: Terumo Kabushiki Kaisha - Applicants: Terumo Kabushiki Kaisha - Inventors: Makoto Jinno - Web page: https://patentgrep.com/patent/US10869710B2 ## CPC - A61B 18/082: {Probes or electrodes therefor} - A61B 17/00008: {Vein tendon strippers (tube strippers A61M1/83)} - A61B 17/32: Surgical cutting instruments ({A61B18/042 takes precedence; suture cutters A61B17/0467;} implements for ligaturing and cutting {A61B17/122, A61B17/12; instruments for rupturing the amniotic membrane A61B17/4208; specially adapted knives for eye surgery A61F9/0133}) - A61B 18/1482: {having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy} - A61B 2017/00778: {Operations on blood vessels (A61B2017/22097, A61B2017/320741 take precedence)} - A61B 2018/00404: {Blood vessels other than those in or around the heart} - A61B 2018/00428: {Severing} - A61B 2018/00595: {Cauterization} - A61B 2018/00601: {Cutting} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract A treatment device is disclosed, which includes a dissecting section main body which is configured to dissect tissue in a living body when inserted into the living body along a blood vessel, and which has a slit permitting a branch vessel branched from the blood vessel to enter into the slit, a stanching section which is disposed at the slit and which presses and cauterizes the branch vessel introduced into the slit, and a cutting section which is disposed at the slit and which cuts the cauterized branch vessel. ## Claims ### Claim 1 A treatment device comprising: a dissecting section main body which is configured to dissect tissue in a living body when inserted into the living body along a blood vessel, and which has a slit permitting a branch vessel branched from the blood vessel to enter into the slit; a stanching section which is disposed at the slit and which presses and cauterizes the branch vessel introduced into the slit, at least a part of the stanching section configured to be displaceable in a separating direction of a first inner surface and a second inner surface, wherein the first inner surface and the second inner surface face each other and define the slit, and the stanching section includes a stationary section fixed on one of the first inner surface and the second inner surface, and a pressing section disposed between the first inner surface and the second inner surface and which constitutes a free end on a proximal side of the stationary section, and wherein the free end on the proximal side of the stationary section is configured to contact the blood vessel; and a cutting section which is disposed at the slit and which cuts the cauterized branch vessel. ### Claim 2 (depends on 1) The treatment device according to claim 1, wherein the stanching section has, between the stationary section and the pressing section, an inclined portion inclined toward one of the first inner surface and the second inner surface. ### Claim 3 (depends on 1) The treatment device according to claim 1, wherein the stanching section includes a first electrode and a second electrode, which constitute bipolar electrodes. ### Claim 4 (depends on 3) The treatment device according to claim 3, wherein the cutting section comprises two cutter pieces, one of the two cutter pieces provided on the first electrode and another of the two cutter pieces provided on the second electrode. ### Claim 5 (depends on 4) The treatment device according to claim 4, wherein the two cutter pieces project from the first and the second electrodes toward a side of the first inner surface and a side of the second inner surface onto which the first electrode and the second electrode are not fixed, respectively. ### Claim 6 (depends on 1) The treatment device according to claim 1, wherein the cutting section is projectingly provided at the stanching section. ### Claim 7 (depends on 1) The treatment device according to claim 1, comprising: a pressing member configured to be displaceably disposed in the slit and which, attendant on displacement of the pressing member, presses the stanching section in a direction for the stanching section to contact the branch vessel. ### Claim 8 (depends on 7) The treatment device according to claim 7, wherein the cutting section is provided in the pressing member and is displaced together with the pressing member when the pressing member is displaced. ### Claim 9 A treatment device comprising: a dissecting section main body which is configured to dissect tissue in a living body when inserted into the living body along a blood vessel, and which has a slit permitting a branch vessel branched from the blood vessel to enter into the slit; a stanching section which is disposed at the slit and which presses and cauterizes the branch vessel introduced into the slit, wherein at least a part of the stanching section is configured to be displaceable in a separating direction of a first inner surface and a second inner surface, wherein the first inner surface and the second inner surface face each other and define the slit, and wherein the stanching section includes a first electrode and a second electrode which constitute bipolar electrodes, and wherein the stanching section includes a stationary section fixed on one of the first inner surface and the second inner surface, and a pressing section disposed between the first inner surface and the second inner surface and having a free end on a proximal side of the stationary section and configured to contact the blood vessel; and a cutting section which is disposed at the slit and which cuts the cauterized branch vessel. ### Claim 10 (depends on 9) The treatment device according to claim 9, wherein the stanching section has, between the stationary section and the pressing section, an inclined portion inclined toward one of the first inner surface and the second inner surface. ### Claim 11 (depends on 9) The treatment device according to claim 9, wherein the cutting section is projectingly provided at the stanching section. ### Claim 12 (depends on 9) The treatment device according to claim 9, further comprising: a pressing member configured to be displaceably disposed in the slit and which, attendant on displacement of the pressing member, presses the stanching section in a direction for the stanching section to contact the branch vessel. ### Claim 13 (depends on 12) The treatment device according to claim 12, wherein the cutting section is provided in the pressing member and is displaced together with the pressing member when the pressing member is displaced. ### Claim 14 (depends on 9) The treatment device according to claim 9, wherein the cutting section comprises a first cutter piece provided on the first electrode and a second cutter piece provided on the second electrode. ### Claim 15 A method for dissecting tissue, the method comprising: introducing a dissecting device having a dissecting section main body which is configured to dissect tissue into a living body along a blood vessel, the dissecting device having a slit, which permits a branch vessel branched from the blood vessel to enter into the slit; cauterizing the branch vessel introduced into the slit in a stanching section which is disposed at the slit, and wherein at least a part of the stanching section is configured to be displaceable in a separating direction of a first inner surface and a second inner surface, wherein the first inner surface and the second inner surface face each other and define the slit, the stanching section including a stationary section fixed on one of the first inner surface and the second inner surface; contacting the blood vessel with a pressing section disposed between the first inner surface and the second inner surface and which constitutes a free end on a proximal side of the stationary section; and cutting the cauterized branch vessel with a cutting section which is disposed at the slit. ### Claim 16 (depends on 15) The method according to claim 15, wherein the stanching section has, between the stationary section and the pressing section, an inclined portion inclined toward one of the first inner surface and the second inner surface, and the stanching section including a first electrode and a second electrode which constitute bipolar electrodes. ### Claim 17 (depends on 16) The method according to claim 16, wherein the cutting section comprises two cutter pieces, one of the two cutter pieces provided on the first electrode and another of the two cutter pieces provided on the second electrode. ### Claim 18 (depends on 15) The method according to claim 15, wherein the cutting section is projectingly provided at the stanching section. ### Claim 19 (depends on 15) The method according to claim 15, comprising: pressing the stanching section in a direction for the stanching section to contact the branch vessel with a pressing member which is displaceably disposed in the slit and which, attendant on displacement of the pressing member. ### Claim 20 (depends on 19) The method according to claim 19, comprising: displacing the cutting section in the pressing member together with the pressing member when the pressing member is displaced.