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Jason D. Meridew, Warsaw US

Jason D. Meridew, Warsaw, IN US

Patent application numberDescriptionPublished
20090210067Acetabular Cup Fixation - An acetabular cup system includes an acetabular cup having a wall with an inner surface and an outer surface. The acetabular cup includes a fixation opening through the wall, the fixation opening including a first wall portion adjacent to the inner surface and a second wall portion adjacent to the outer surface. The acetabular cup system also includes a fixation fastener including a head and a shaft with a bone-anchoring portion. The fastener can be inserted though the fixation opening. The head includes a first head portion engageable with the first wall portion and a second head portion engageable with the second wall portion.08-20-2009
20090254093Patient-Specific Alignment Guide - An orthopedic apparatus includes an alignment guide attachable to one of a femoral joint surface of a femur of a patient. The alignment guide has a patient-specific three-dimensional engagement surface, and at least one guiding portion defining a guiding passage. The engagement surface anatomically matches a corresponding portion of the femoral joint surface.10-08-2009
20090265014Method And Apparatus For Attaching Soft Tissue To An Implant - A system and method for attaching soft tissue to a prosthetic implant can include a prosthetic component that defines a soft tissue attachment region having an attachment surface thereon. A first construct can be formed of porous metal and be removably coupled to the attachment surface. A second construct can be positioned outboard of the soft tissue. A fastener can be engaged to the second construct capturing the soft tissue against the first construct. The fastener can be coupled on a distal end to the first prosthetic component.10-22-2009
20090299386Soft Tissue Rivet and Method of Use - A method and apparatus for reattaching soft tissue to a selected boney structure using a rivet. Generally, a rivet having first portion and a second portion is provided to fully secure a soft tissue in the boney structure. The first portion of the rivet retains the soft tissue via a suture which is threaded through the first portion. The second portion of the rivet has at least one expanding member which engages the boney structure upon contact with the first portion of the rivet. Thus, the soft tissue is fully secured to the boney structure, ensuring proper healing.12-03-2009
20100222830Apparatus and Method for Manipulating a Flexible Strand and Soft Tissue Replacement During Surgery - An apparatus and method is disclosed for performing a surgery, such as an orthopedic surgery. The apparatus can include a guide portion and an alignment portion. The guide portion can assist in positioning the alignment portion to assist in aligning an implant. The implant can be aligned and positioned to hold a graft relative to a bone portion.09-02-2010
20100286789Acetabular Cup System - A system for replacing a hip joint can include a first acetabular cup formed of a first material and having a first inner diameter and a first thickness. A second acetabular cup can be formed of a second material and having a second inner diameter and a second thickness. A first femoral hip prosthesis can include a first femoral head that is alternately accommodated by either of the first or second acetabular cups. A bearing can be adapted to be interposed between the first femoral head and one of the first or second acetabular cups. The first and second inner diameters can be the same. The first thickness can be less than the second thickness. The first material can be distinct from the second material.11-11-2010
20110015639Femoral Acetabular Impingement Guide - An orthopedic device for correcting a femoral bone abnormality includes a patient-specific three-dimensional shell and a patient-specific guiding feature. The shell has an outer surface and an inner bone engagement surface customized in a pre-operating planning stage by computer imaging to closely mate and conform to and substantially cover a femoral head of a patient in only one position. The guiding feature is pre-operatively planned relative to the shell such that when the shell is fitted over the femoral head, the guiding feature can guide a removal tool for removing an abnormality portion of the proximal femur of the patient.01-20-2011
20110015752System and Method for Acetabular Cup - An acetabular implant assembly for replacing a portion of the anatomy is provided. The acetabular implant assembly can include a fiber-reinforced polymeric cup having an exterior surface that engages the anatomy and an interior surface. The acetabular implant assembly can also include a metal or ceramic bearing liner, which can be coupled to the interior surface of the with an acetabular implant assembly cup via a taper lock connection. The metal or ceramic bearing liner can have an interior bearing surface. The acetabular implant assembly can include a metal articulating member, which can be movable within the interior bearing surface to replace the articulating portion of the anatomy.01-20-2011
20110015753Multiple Bearing Acetabular Prosthesis - An acetabular prosthesis assembly can include an acetabular cup and a first liner. The acetabular cup can have an outer surface, an inner surface and an upper rim extending between the outer surface and the inner surface. The acetabular cup can have a cup connection portion including a groove formed on an upper face of the upper rim. The first liner can have an outer cup engaging surface and a liner connection portion that extends from a flange of the first liner. The liner connection portion can have a finger that is received by the groove formed on the upper face of the acetabular cup that selectively couples the liner connection portion with the cup connection portion in an assembled position.01-20-2011
20110093086Patient-Specific Hip Joint Devices - A patient-specific acetabular resection guide includes a dome-shaped surface bounded by a periphery. The dome-shaped surface is a three-dimensional patient-specific surface designed to anatomically match and be received into an acetabulum of the patient, based on a three-dimensional image of a hip joint of the patient reconstructed from a medical scan of the hip joint. The resection guide includes a plurality of guiding formations defined on the resection guide and having patient-specific shapes and orientations for guiding corresponding osteotomies relative to the acetabulum for correcting hip dysplasia.04-21-2011
20110153018Method and Apparatus for Graft Fixation - An apparatus and method for performing a surgery, especially an ACL replacement surgery, where a flexible strand insertion rod co-operates with a U-Guide apparatus to insert a flexible strand into a tunnel formed in a bone portion and to guide a pair of drill points to form a pair of tunnels transversely to the tunnel of the insertion rod. The drill points are guided through the insertion rod and the flexible strand is held over the drill points as the transverse tunnels are formed. The insertion rod is then removed from the tunnels formed in the bone and the flexible strand is held looped over the second drill point. Subsequently, a soft tissue replacement is affixed to one end of the flexible strand and pulled over up to the first drill point with the other end of the flexible strand. The first drill point is then used to pull a cross pin through the transverse tunnel to hold the looped end of the soft tissue replacement in place. Finally, the two free ends of the soft tissue replacement are affixed to the bone completing the implantation of a soft tissue replacement.06-23-2011
20110160736PATIENT-SPECIFIC FEMORAL GUIDE - A medical device for preparing an elongated bone, such as a proximal femoral bone, for receiving an implant includes a patient-specific femoral guide and an elongated alignment element. The femoral guide has a patient-specific three-dimensional bone-engaging surface configured according to a preoperative plan based on a three-dimensional image model of the femoral bone to mate complementarily with the surface of the proximal femoral bone extending between the greater trochanter, the femoral neck and the femoral shaft of the proximal femur. The femoral guide includes a first guide end forming a planar guide configured for guiding a neck resection. The alignment member can be removably attached to the femoral guide and defines a reference axis for guiding a cutting tool into the femoral bone through a resected surface of the femoral neck.06-30-2011
20110160867PATIENT-SPECIFIC TOOLS AND IMPLANTS - A method for preparing a femoral neck for receiving a neck implant includes obtaining image data of a proximal femoral bone and femoral neck of a patient by a medical imaging method and constructing a three-dimensional image model of the proximal femoral bone and neck of the patient using the image data. The method further includes identifying a three-dimensional cortical boundary surface at an interface between cortical and cancellous bone of the patient using the image model. A patient-specific broach having a three-dimensional cutting surface closely matching and complementary to the cortical boundary surface of the patient using the image model is designed and manufactured.06-30-2011

Patent applications by Jason D. Meridew, Warsaw, IN US