# US 8,747,112 B2 · Abutment position locator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,747,112 B2 - Document ID: US8747112B2 - Status: Granted - Kind: B2 - Application number: 13/341,328 - Filed: 2011-12-30 - Published: 2013-07-04 - Granted: 2014-06-10 - Earliest claimed: 2011-12-30 - Assignees: Nobel Biocare Services AG - Applicants: Philipp Brun - Inventors: Philipp Brun - Web page: https://patentgrep.com/patent/US8747112B2 ## CPC - A61C 8/0089: {Implanting tools or instruments} - A61C 8/0001: {Impression means for implants, e.g. impression coping} - A61C 8/0028: {Pins, needles; Head structures therefor (A61C8/0004, A61C8/0009 take precedence)} - A61C 8/0057: {with elastic means} - A61C 8/0062: {Catch or snap type connection} - A61C 8/0066: {with positioning means (A61C8/006 takes precedence)} - A61C 2008/0084: {Provisional implants or abutments} - 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) ## Abstract The present application relates to a fitting for insertion into a dental implant in an insertion orientation defining a central insertion axis (X) and an insertion direction (D) of the fitting. The fitting includes at least one resilient spring member being expandable perpendicularly to the insertion axis (X) of the fitting for impeding a movement of the fitting relative to the dental implant along the insertion axis (X) when inserted into the dental implant. It further includes an alignment feature for rotationally aligning the fitting relative to the dental implant about the insertion axis (X). The fitting is characterized in that the alignment feature extends further in the insertion direction (D) than the spring member. ## Claims ### Claim 1 Fitting for insertion into a dental implant in an insertion orientation defining a central insertion axis (X) and an insertion direction (D) of the fitting, comprising at least one resilient spring member being expandable perpendicularly to the insertion axis (X) of the fitting, for impeding a movement of the fitting relative to the dental implant along the insertion axis (X) when inserted into the dental implant, and an inelastic alignment feature, for rotationally aligning the fitting relative to the dental implant about the insertion axis (X), the inelastic alignment feature including a circumferentially closed structure and at least one recess opening in a peripheral portion of the alignment feature; characterized in that the circumferentially closed structure of the alignment feature is at an axial position further in the insertion direction (D) than the axial position of the at least one spring member, wherein one of the at least one spring member comprises a resilient finger disposed in the at least one opening of the alignment feature. ### Claim 2 (depends on 1) Fitting according to claim 1, wherein the at least one spring member comprises a plurality of spring members. ### Claim 3 (depends on 2) Fitting according to claim 2, wherein the plurality of spring members is symmetrically arranged around the insertion axis (X). ### Claim 4 (depends on 3) Fitting according to claim 3, wherein the plurality of spring members are arranged around the insertion axis (X) such that an angular distance with respect to the insertion axis (X) between two adjacent spring members of the plurality is the same for all spring members of the plurality. ### Claim 5 (depends on 1) Fitting according to claim 1, wherein each one of the at least one spring member is disposed in one respective opening. ### Claim 6 (depends on 1) Fitting according to claim 1, wherein the alignment feature comprises a plurality of rods extending parallel to the insertion axis (X) and being circumferentially distributed about the insertion axis (X). ### Claim 7 (depends on 6) Fitting according to claim 6, wherein the circumferentially closed structure comprises the distal ends of adjacent rods and at least one connection between the adjacent rods. ### Claim 8 (depends on 1) Fitting according to claim 1, further comprising a conical seating surface at an axial position less far in the insertion direction (D) than the axial position of the at least one spring member. ### Claim 9 (depends on 1) Fitting according to claim 1, being made of a metallic material. ### Claim 10 (depends on 9) Fitting according to claim 9, being made of alloyed titanium. ### Claim 11 (depends on 1) Fitting according to claim 1, being made of a polymeric material. ### Claim 12 (depends on 11) Fitting according to claim 11, being made of polyether-ether-ketone (PEEK). ### Claim 13 (depends on 1) A fitting according to claim 1 in combination with an abutment for use with a dental implant. ### Claim 14 (depends on 1) A fitting according to claim 1 in combination with a dental prosthesis for use with a dental implant. ### Claim 15 (depends on 1) Fitting according to claim 1, wherein the circumferentially closed structure includes a distal opening. ### Claim 16 (depends on 1) Fitting according to claim 1, wherein the distal opening of the circumferentially closed structure is substantially circular. ### Claim 17 Dental implant system, comprising a dental implant for installation in the bone and an abutment to be introduced into the dental implant, wherein the dental implant comprises a proximal end being located near an exterior surface of the bone and an interior bore extending distally from the proximal end, the interior bore being configured for an introduction of the abutment, and wherein the abutment comprises a fitting for distally insertion into the dental implant in an insertion orientation defining a central insertion axis (X) of the abutment, the fitting comprising at least one resilient spring member being expandable perpendicularly to the insertion axis (X) of the abutment, for impeding a movement of the abutment relative to the dental implant along the insertion axis (X) when inserted into the dental implant, and an inelastic alignment feature, for rotationally aligning the abutment relative to the dental implant about the insertion axis (X), the inelastic alignment feature including a circumferentially closed structure at a distal end of the inelastic alignment feature, characterized in that the circumferentially closed structure of the alignment feature is distal the spring member, wherein one of the at least one spring member comprises a resilient finger disposed in an opening in a peripheral portion of the alignment feature. ### Claim 18 (depends on 17) Dental implant system according to claim 17, wherein the fitting comprises the at least one resilient spring member being expandable perpendicularly to the insertion axis (X) of the dental prosthesis, symmetrically arranged around the insertion axis (X), for impeding a movement of the dental prosthesis relative to the dental implant along the insertion axis (X) when inserted into the dental implant. ### Claim 19 (depends on 17) Dental implant system according to claim 17, wherein the circumferentially closed structure includes a distal opening. ### Claim 20 (depends on 17) Dental implant system according to claim 17, wherein the distal opening circumferentially closed structure is substantially circular.