# US 2016/0250040 A1 · Medical instrumentation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2016/0250040 A1 - Document ID: US20160250040A1 - Status: Published application - Kind: A1 - Application number: 15/149,295 - Filed: 2016-05-09 - Published: 2016-09-01 - Earliest claimed: 2013-11-13 - Assignees: Aesculap AG - Applicants: Aesculap AG - Inventors: Thomas Hermle; Berna Richter - Web page: https://patentgrep.com/patent/US20160250040A1 ## CPC - A61F 2/4609: {of acetabular cups} - A61B 17/1746: {for the acetabulum} - A61B 34/10: Computer-aided planning, simulation or modelling of surgical operations - A61F 2/4657: {Measuring instruments used for implanting artificial joints (for surgical instruments A61B90/06)} - A61B 2017/568: {produced with shape and dimensions specific for an individual patient} - A61B 2034/108: {Computer aided selection or customisation of medical implants or cutting guides} - A61F 2/30942: {for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques} - A61F 2002/4668: {for measuring angles} - A61F 2002/4687: {Mechanical guides for implantation instruments} - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) ## Abstract The present invention relates to a medical instrumentation, in particular, for implanting an acetabular cup, comprising a medical alignment instrument with a shaped body, which has a patient-specific bone abutment surface facing away from the shaped body and deviating from a spherical surface section, the bone abutment surface being shaped so as to correspond to a bone surface of the patient, wherein the shaped body has at least one viewing edge with a viewing height, and wherein the viewing edge adjoins the patient-specific bone abutment surface, and wherein a transition between the viewing edge and the patient-specific bone abutment surface is tangentially discontinuous. ## Claims ### Claim 1 Medical instrumentation, in particular, for implanting an acetabular cup, comprising a medical alignment instrument with a shaped body, which has a patient-specific bone abutment surface facing away from the shaped body and deviating from a spherical surface section, the bone abutment surface being shaped so as to correspond to a bone surface of the patient, wherein the shaped body has at least one viewing edge with a viewing height, and wherein the viewing edge adjoins the patient-specific bone abutment surface, and wherein a transition between the viewing edge and the patient-specific bone abutment surface is tangentially discontinuous. ### Claim 2 (depends on 1) Medical instrumentation in accordance with claim 1, wherein the at least one viewing edge has a width or height which corresponds at least to a minimum thickness of the shaped body. ### Claim 3 (depends on 2) Medical instrumentation in accordance with claim 2, wherein the at least one viewing edge has a width or height which corresponds at most to three times a minimum thickness of the shaped body. ### Claim 4 (depends on 1) Medical instrumentation in accordance with claim 1, wherein the at least one viewing edge forms a flat or substantially flat surface area or forms a boundary surface of a recess of the shaped body, which recess at least partially penetrates the bone abutment surface. ### Claim 5 (depends on 4) Medical instrumentation in accordance with claim 4, wherein the at least one recess is constructed in the form of a through-opening, and wherein the at least one viewing edge forms an inner surface of the through-opening. ### Claim 6 (depends on 5) Medical instrumentation in accordance with claim 5, wherein at least one of the alignment instrument defines an instrument longitudinal axis, and a longitudinal axis of the through-opening runs parallel or substantially parallel to the instrument longitudinal axis and the through-opening is constructed in the form of a borehole. ### Claim 7 (depends on 4) Medical instrumentation in accordance with claim 4, comprising two, three, four or more recesses. ### Claim 8 (depends on 1) Medical instrumentation in accordance with a claim 1, wherein the bone abutment surface at least one of is at least partially adapted to a contour of the acetabulum of the patient and has a contour which corresponds at least to a portion of the fossa and/or to a portion of the acetabular notch. ### Claim 9 (depends on 1) Medical instrumentation in accordance with claim 1, wherein at least one of at least one attachment element receptacle is arranged or formed on the shaped body and the shaped body is of dish-shaped construction and has a constant or substantially constant thickness. ### Claim 10 (depends on 1) Medical instrumentation in accordance with claim 1, wherein at least one of at least one of the bone abutment surface and the shaped body are manufactured by molding or 3-D printing and the bone abutment surface of the shaped body defines bone abutment surface contour data which correspond or substantially correspond to noninvasively determined bone contour data of the patient, in particular, bone contour data of the patient from X-ray or magnetic resonance images. ### Claim 11 (depends on 1) Medical instrumentation in accordance with claim 1, characterized by a grip element. ### Claim 12 (depends on 11) Medical instrumentation in accordance with claim 11, wherein the grip element is constructed so as to be releasably connectable to the shaped body. ### Claim 13 (depends on 1) Medical instrumentation in accordance with claim 1, characterized by a coupling device for temporarily coupling the shaped body to the grip element. ### Claim 14 (depends on 13) Medical instrumentation in accordance with claim 13, wherein the coupling device comprises at least one first coupling element and at least one second coupling element, and wherein the at least one first and second coupling elements are constructed so that they correspond to each other and are in engagement in a coupling position and in disengagement in a release position. ### Claim 15 (depends on 14) Medical instrumentation in accordance with claim 14, wherein the at least one first coupling element at least one of is constructed in the form of a coupling receptacle and the at least one second coupling element in the form of a coupling projection and has an internal thread section and the at least one second coupling element has a corresponding external thread section and is arranged or constructed on the shaped body, and wherein the at least one second coupling element is arranged or constructed on the grip element. ### Claim 16 (depends on 11) Medical instrumentation in accordance with claim 11, wherein the grip element has an elongate shaft, and wherein a gripping area is arranged or formed at a proximal end area of the shaft. ### Claim 17 (depends on 16) Medical instrumentation in accordance with claim 16, wherein the shaft defines a longitudinal axis, and wherein a proximal end face of the shaft is constructed in the form of an impact surface for an impactor tool. ### Claim 18 (depends on 17) Medical instrumentation in accordance with claim 17, wherein the impact surface is at least partially flat and defines a plane extending perpendicularly to the longitudinal axis. ### Claim 19 (depends on 16) Medical instrumentation in accordance with claim 16, wherein the shaft is of at least two-part construction and comprises a shaft sleeve and an inner shaft guided in the shaft sleeve, and wherein the second coupling element is arranged or formed at a distal end of the inner shaft or at a distal end of the shaft sleeve. ### Claim 20 (depends on 1) Medical instrumentation in accordance with claim 1, characterized by an impactor tool.