# US 11,298,152 B2 · Trocar retaining mechanism including band support > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,152 B2 - Document ID: US11298152B2 - Status: Granted - Kind: B2 - Application number: 16/804,367 - Filed: 2020-02-28 - Published: 2021-09-02 - Granted: 2022-04-12 - Earliest claimed: 2020-02-28 - Assignees: Covidien LP - Applicants: Covidien LP - Inventors: Ramiro Cabrera; David E. Valentine - Web page: https://patentgrep.com/patent/US11298152B2 ## CPC - A61B 17/3417: {Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating (syringe needles A61M5/32; dilators A61M29/00)} - A61B 17/1155: {Circular staplers comprising a plurality of staples} - A61B 2017/00486: {Adaptors for coupling parts with incompatible geometries} - A61B 2017/3419: {Sealing means between cannula and body} - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract An adapter assembly for connecting a loading unit to a handle assembly includes a sleeve, a trocar assembly releasably securable with the sleeve, a drive assembly including at least one flexible band, and a trocar retaining mechanism configured to releasably secure the trocar assembly within the sleeve. The trocar retaining mechanism includes a band support configured to prevent buckling of at least one flexible band. ## Claims ### Claim 1 An adapter assembly for connecting a loading unit to a handle assembly, the adapter assembly comprising: a sleeve; a trocar assembly releasably securable with the sleeve; a drive assembly including at least one flexible band extending at least partially within the sleeve; and a trocar retaining mechanism configured to releasably secure the trocar assembly within the sleeve, the trocar retaining mechanism including a retaining block for receiving the trocar assembly therethrough and a band support disposed outward of the retaining block, the band support positioned in engagement with the at least one flexible band to prevent buckling of the at least one flexible band. ### Claim 2 (depends on 1) The adapter assembly of claim 1, wherein the band support includes a bottom surface in engagement with the at least one flexible band. ### Claim 3 (depends on 1) The adapter assembly of claim 1, wherein the band support includes first and second support members in engagement with the at least one flexible band. ### Claim 4 (depends on 1) The adapter assembly of claim 1, wherein the band support includes a cutout for accommodating the at least one flexible band. ### Claim 5 (depends on 1) The adapter assembly of claim 1, further including a wire harness extending at least partially through the sleeve, wherein the band support defines a channel for receiving the wire harness. ### Claim 6 (depends on 5) The adapter assembly of claim 5, wherein the band support includes a lip on either side of the channel for maintaining the wire harness within the channel. ### Claim 7 (depends on 1) The adapter assembly of claim 1, wherein the trocar retaining mechanism further includes a band guide defining a cutout for receiving the at least one flexible band. ### Claim 8 (depends on 7) The adapter assembly of claim 7, wherein the band guide defines a central opening for receiving the band support. ### Claim 9 (depends on 7) The adapter assembly of claim 7, wherein the trocar retaining mechanism further includes a retaining block defining a longitudinal passage for receiving the trocar assembly. ### Claim 10 (depends on 1) The adapter assembly of claim 1, wherein the trocar assembly includes a housing and a trocar member slidably disposed within the trocar assembly. ### Claim 11 A surgical stapling device comprising: a handle assembly; and an adapter assembly secured to the handle assembly, the adapter assembly including, a drive assembly including at least one flexible band extending at least partially through the adapter assembly; and a trocar retaining mechanism configured to releasably secure the trocar assembly within the sleeve, the trocar retaining mechanism including a retaining block for receiving the trocar assembly therethrough and a band support disposed outward of the retaining block, the band support positioned in engagement with the at least one flexible band to prevent buckling of the at least one flexible band. ### Claim 12 (depends on 11) The surgical stapling device of claim 11, wherein the band support includes a bottom surface in engagement with the at least one flexible band. ### Claim 13 (depends on 11) The surgical stapling device of claim 11, wherein the band support includes first and second support members in engagement with the at least one flexible band. ### Claim 14 (depends on 11) The surgical stapling device of claim 11, wherein the band support includes a cutout for accommodating the at least one flexible band. ### Claim 15 (depends on 11) The surgical stapling device of claim 11, further including a wire harness extending at least partially through the adapter assembly, wherein the band support defines a channel for receiving the wire harness. ### Claim 16 (depends on 15) The surgical stapling device of claim 15, wherein the band support includes a lip on either side of the channel for maintaining the wire harness within the channel. ### Claim 17 (depends on 11) The surgical stapling device of claim 11, wherein the retaining mechanism further includes a band guide defining a cutout for receiving the at least one flexible band. ### Claim 18 (depends on 17) The surgical stapling device of claim 17, wherein the band guide defines a central opening for receiving the band support. ### Claim 19 (depends on 17) The surgical stapling device of claim 17, further including a trocar assembly, wherein the retaining mechanism includes a retaining block defining a longitudinal passage for receiving the trocar assembly. ### Claim 20 (depends on 11) The surgical stapling device of claim 11, wherein the trocar assembly includes a housing and a trocar member slidably disposed within the trocar assembly.