Patents Assigned to MatOrtho Limited
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Patent number: 11969358Abstract: An impactor head (10) for releasably holding an outer surface (12) of a cup implant (14), comprises a head body (16), at least one rotatable implant-engagement arm (20) which is also at least in part linearly translatable, and an actuation mechanism (18) which moves the implant-engagement arm (20) to an implant-engagement condition and an implant-release condition.Type: GrantFiled: July 10, 2019Date of Patent: April 30, 2024Assignee: MATORTHO LIMITEDInventors: Michael Antony Tuke, Charles Jonas Ambrose Cullum, Simon Nicholas Collins
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Patent number: 11540923Abstract: A ceramic acetabular cup devoid of a separate liner comprises a part-spherical inner articulating surface and an outer surface. An inner radius at or adjacent to a rim of the cup extends to or adjacent to a surface edge of the inner articulating surface. An inner radius of the inner articulating surface defines an active arc, and an uppermost portion of the rim defines an offset datum plane. An offset is provided between an equatorial centre of the inner articulating surface and the offset datum plane. The active arc extends in a range from around 150 degrees to less than 180 degrees, and a distance between the inner articulating surface and outer surface on a straight line from the said equatorial centre and passing through the surface edge is equal to or less than 4 mm.Type: GrantFiled: May 8, 2018Date of Patent: January 3, 2023Assignee: MATORTHO LIMITEDInventors: Carolina Avila Carrasco, Simon Collins, Andrew Clive Taylor, Michael Antony Tuke
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Publication number: 20220110755Abstract: A ceramic femoral resurfacing head prosthesis (110) comprises a ceramic convex outer contact surface (112) engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface (114) having an inner-land portion (128), the ceramic convex outer contact surface (112) and the concave inner fixation surface (114) extending to intersect each other at a rim (116). A ceramic stem (120) projects from the concave inner fixation surface (114), and is adapted to be received by a stem bore. The concave inner fixation surface (114) includes a skirt (134) which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess (136) at the skirt (134).Type: ApplicationFiled: December 24, 2021Publication date: April 14, 2022Applicant: MatOrtho LimitedInventors: Simon COLLINS, Andrew Clive TAYLOR, Michael Antony TUKE, Carolina Avila CARRASCO
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Patent number: 11278414Abstract: A ceramic femoral resurfacing head prosthesis (110) comprises a ceramic convex outer contact surface (112) engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface (114) having an inner-land portion (128), the ceramic convex outer contact surface (112) and the concave inner fixation surface (114) extending to intersect each other at a rim (116). A ceramic stem (120) projects from the concave inner fixation surface (114), and is adapted to be received by a stem bore. The concave inner fixation surface (114) includes a skirt (134) which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess (136) at the skirt (134).Type: GrantFiled: November 1, 2018Date of Patent: March 22, 2022Assignee: MatOrtho LimitedInventors: Simon Collins, Andrew Clive Taylor, Michael Antony Tuke, Carolina Avila Carrasco
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Publication number: 20220079765Abstract: A ceramic femoral resurfacing head prosthesis (110) comprises a ceramic convex outer contact surface (112) engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface (114) having an inner-land portion (128), the ceramic convex outer contact surface (112) and the concave inner fixation surface (114) extending to intersect each other at a rim (116). A ceramic stem (120) projects from the concave inner fixation surface (114), and is adapted to be received by a stem bore. The concave inner fixation surface (114) includes a skirt (134) which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess (136) at the skirt (134).Type: ApplicationFiled: November 23, 2021Publication date: March 17, 2022Applicant: MatOrtho LimitedInventors: Simon COLLINS, Andrew Clive TAYLOR, Michael Antony TUKE, Carolina Avila CARRASCO
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Publication number: 20220047394Abstract: A ceramic femoral resurfacing head prosthesis (110) comprises a ceramic convex outer contact surface (112) engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface (114) having an inner-land portion (128), the ceramic convex outer contact surface (112) and the concave inner fixation surface (114) extending to intersect each other at a rim (116). A ceramic stem (120) projects from the concave inner fixation surface (114), and is adapted to be received by a stem bore. The concave inner fixation surface (114) includes a skirt (134) which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess (136) at the skirt (134).Type: ApplicationFiled: October 28, 2021Publication date: February 17, 2022Applicant: MatOrtho LimitedInventors: Simon COLLINS, Andrew Clive TAYLOR, Michael Antony TUKE, Carolina Avila CARRASCO
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Publication number: 20200323639Abstract: A ceramic femoral resurfacing head prosthesis (110) comprises a ceramic convex outer contact surface (112) engagable with an acetabulum of a patient or an acetabular cup prosthesis and a concave inner fixation surface (114) having an inner-land portion (128), the ceramic convex outer contact surface (112) and the concave inner fixation surface (114) extending to intersect each other at a rim (116). A ceramic stem (120) projects from the concave inner fixation surface (114), and is adapted to be received by a stem bore. The concave inner fixation surface (114) includes a skirt (134) which is cylindrical or substantially cylindrical, or frusto-conical or substantially frusto-conical, and at least one circumferentially elongate recess (136) at the skirt (134).Type: ApplicationFiled: November 1, 2018Publication date: October 15, 2020Applicant: MatOrtho LimitedInventors: Simon COLLINS, Andrew Clive TAYLOR, Michael Antony TUKE, Carolina Avila CARRASCO
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Publication number: 20200085582Abstract: A ceramic acetabular cup (10) devoid of a separate liner comprises a part-spherical inner articulating surface (12) for non-captively receiving a femoral head, and an outer surface (14) for enabling direct to bone fixation. An inner radius at or adjacent to a rim (22) of the cup (10) extends to or adjacent to a surface edge of the inner articulating surface (12) to prevent or reduce undesirable effects of impingement of an associated femoral head and/or neck. An inner radius of the inner articulating surface (12) defines an active arc (A) over which an in use femoral head can articulate, and an uppermost portion of the rim (22) defines an offset datum plane (D). An offset (O) between an equatorial centre (E) of the inner articulating surface (12) and the offset datum plane (D) is in a range of around 1 mm towards a pole (24) of the inner articulating surface (12) and around 3.5 mm away from the said pole (24).Type: ApplicationFiled: May 8, 2018Publication date: March 19, 2020Applicant: MATORTHO LIMITEDInventors: Carolina Avila Carrasco, Simon Collins, Andrew Clive Taylor, Michael Antony Tuke
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Publication number: 20190151004Abstract: A redressing device (100) for redressing a tapered portion (12) of an orthopaedic implant (10) comprising: a grinding member (110) adapted to engage the tapered portion (12); an adjustable guide element (130) for defining, at least in part, the degree of redressing required for said tapered portion (12) by a user; and a drive shaft (120) for driving movement of said grinding member (110). A device for retaining debris produced during redressing a tapered portion (12) of an orthopaedic implant (12), a surgical kit for redressing a tapered portion (12) of an orthopaedic implant (10) and a method of redressing a tapered portion (12) of an orthopaedic implant (10) are also provided.Type: ApplicationFiled: June 7, 2017Publication date: May 23, 2019Applicant: MatOrtho LimitedInventors: Ronald Mark Gillies, Simon Collins
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Publication number: 20130211411Abstract: A jig for use in knee surgery has a component shaped to represent the overall profile of a femoral prosthetic component of a specific side and size. Extending from the jig is an anterior reference arm having at least one of a cutting guide located thereon and means for attaching a cutting guide thereto. Also disclosed is a tibial replacement thickness spacer having a set of leaves. A tibial jig for use in knee surgery has a component having a tibial plate and tibial posts extending downwardly from the tibial plate, and an anterior reference arm. The arm has a cutting guide located thereon. Kits comprising these components are also described.Type: ApplicationFiled: February 8, 2013Publication date: August 15, 2013Applicant: MatOrtho LimitedInventor: MatOrtho Limited