# US 9,039,413 B2 · Dental tools for guided surgery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,413 B2 - Document ID: US9039413B2 - Status: Granted - Kind: B2 - Application number: 12/969,055 - Filed: 2010-12-15 - Published: 2011-07-21 - Granted: 2015-05-26 - Earliest claimed: 2009-12-17 - Assignees: Straumann Holding AG - Applicants: Edmund Suter; Stephane Courvoisier - Inventors: Edmund Suter; Stephane Courvoisier - Web page: https://patentgrep.com/patent/US9039413B2 ## CPC - A61C 8/0089: {Implanting tools or instruments} - A61B 90/11: with guides for needles or instruments, e.g. arcuate slides or ball joints - A61B 2090/062: {penetration depth} - A61B 2090/3937: {Visible markers} - A61C 1/084: {of implanting tools} - A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract Surgical tool for use in guided surgery having a distal end portion having a functional element, a shank on the opposite end of the tool, and a substantially circular cylindrical guide portion. The guide portion is located between the functional element and the shank and has at least one visual marker. The at least one marker has at least one recess which is finite in the circumferential direction such that, at the axial location of the recess a section of guide portion having outer radius r is maintained. ## Claims ### Claim 1 Surgical tool for use in guided surgery with a longitudinal axis comprising: a functional element at a distal end of the tool, a shank on the opposite end of the tool, and a cylindrical guide portion having an outer radius r which defines a guide surface for cooperation with a guide element, the guide portion being located on the longitudinal axis between the functional element and the shank and having a plurality of markers lying in different axial planes, each marker comprising a plurality of recesses located in the same axial plane and having the same distance to the distal end of the tool, forming a set, said recesses being finite in the circumferential direction and separated from each other by sections of the guide surface such that, at the axial location of the marker, sections of the guide surface are maintained, wherein the plurality of recesses in each marker are positioned in such a way that at least one recess is visible from any viewing angle about the longitudinal axis. ### Claim 2 (depends on 1) Surgical tool according to claim 1, wherein said at least one marker is a visual marker. ### Claim 3 (depends on 2) Surgical tool according to claim 2, wherein the at least one recess contains a mark. ### Claim 4 (depends on 3) Surgical tool according to claim 3, wherein said mark is made by laser-marking. ### Claim 5 (depends on 3) Surgical tool according to claim 3, wherein the mark lies completely within the distance r from the longitudinal axis of the surgical. ### Claim 6 (depends on 2) Surgical tool according to claim 2, wherein said at least one recess is a finite groove. ### Claim 7 (depends on 6) Surgical tool according to claim 6, wherein said groove comprises a ground. ### Claim 8 (depends on 7) Surgical tool according to claim 7, wherein the at least one groove contains a mark on the ground of the groove. ### Claim 9 (depends on 7) Surgical tool according to claim 7, wherein the ground is planar. ### Claim 10 (depends on 2) Surgical tool according to claim 2, wherein the axial width of the at least one recess is between 0.4 and 2.5 mm. ### Claim 11 (depends on 10) Surgical tool according to claim 10, wherein the axial width is between 0.5 and 2.0 mm. ### Claim 12 (depends on 2) Surgical tool according to claim 2, wherein the tool is a dental tool. ### Claim 13 (depends on 12) Surgical tool according to claim 12, wherein the dental tool comprises a punch, a milling cutter, a tap, a profile drill, a drill or a transfer piece. ### Claim 14 (depends on 1) Surgical tool according to claim 1, wherein the number of recesses per set is 2 to 9. ### Claim 15 (depends on 1) Surgical tool according to claim 1, wherein the ratio of the combined length of the recesses in a set to the combined length of the remaining sections of the guide surface in the same axial plane is between 1 and 3. ### Claim 16 (depends on 15) Surgical tool according to claim 15, wherein the ratio is between 1.4 and 2.7. ### Claim 17 (depends on 1) Surgical tool according to claim 1, wherein the plurality is 2 to 5. ### Claim 18 Kit comprising a surgical tool and a guide element, the surgical tool comprising a longitudinal axis, a functional element at a distal end of the tool, a shank on the opposite end of the tool, and a cylindrical guide portion having an outer radius r which defines a guide surface for cooperation with the guide element, the guide portion being located on the longitudinal axis between the functional element and the shank and having at least one marker, the at least one marker comprising a plurality of recesses, said plurality of recesses being finite in the circumferential direction such that, at the axial location of the recess, a section of the guide surface is maintained, wherein the plurality of recesses in each marker are positioned in such a way that at least one recess is visible from any viewing angle about the longitudinal axis. ### Claim 19 (depends on 18) Kit as claimed in claim 18 wherein the at least one marker of the surgical tool is arranged to indicate, in cooperation with the guide element, the depth of the functional element of the tool.