Body for distributing bone cement for the anchoring of implants

Abstract

A body (2) for distributing bone cement (8) rests by an elastic collar (4) against the outer edge of a hollow (1) in the bone and has a passage (5) through into the hollow (1) in the bone, into which a syringe (6) for bone cement may be inserted. In the hollow (1) in the bone the body (2) is made as a displacement body of the shape (3) of the implant which is to be inserted later. During injection into the space between the body and the hollow in the bone a designed pressure is maintained until the viscosity of the bone cement (8) is adequate for taking the body (2) out of the hollow (1) in the bone without bone cement (8) flowing back. Subsequently the actual implant may be pressed into the thus prepared but still plastically deformable countermould of bone cement (8) .

Claims

We claim: 1. A removable mold for distributing bone cement from a hand-held bone cement syringe and into a hip joint cavity prepared in a bone, the hip joint cavity for receiving and anchoring a hip joint implant, the mold for distributing the bone cement in the hip joint cavity so that the bone cement corresponds in shape with an outer geometry of the implant, the mold comprising: a solid rubber-like body having a molding surface that is fashioned to correspond in shape to the outer geometry of the hip joint implant, and wherein the body defines a central channel, the channel being sized to receive and position the bone cement syringe near the molding surface to allow the hope cement to be delivered through the channel with minimal travel and with minimal loss of pressure so that the cement may be evenly distributed between the bone and the molding surface upon hand operation of the syringe; and wherein the mold further includes an elastic collar integrally formed about the periphery of the body, the collar being sized to rest against the bone and to hold the molding surface spaced-apart from the bone, and wherein the elasticity of the mold allows the mold to be removed from the hip joint cavity without substantial removal of the cement when the cement reaches a desired viscosity and the hip joint implant placed therein. 2. A mold as in claim 1, wherein the body is sufficiently stable to be able to be sterilized by steam at 134° C. 3. A mold as in claim 1, wherein the collar is constructed of silicone rubber. 4. A mold as in claim 1, further comprising a release agent for wetting the body. 5. A mold as in claim 4, wherein the release agent comprises a sterile physiological cooking-salt solution. 6. A hip joint implantation system for anchoring a hip joint implant into a hip joint cavity prepared in a bone, the system comprising: a hand-held bone cement syringe for injecting bone cement; and a removable mold for receiving the bone cement syringe and for distributing the bone cement into the hip joint cavity so that the bone cement corresponds in shape with an outer geometry of the implant, the mold comprising: a solid rubber-like body having a molding surface that is sized to correspond in shape to the outer geometry of the hip joint implant, and wherein the body defines a channel, the channel being sized to receive and position the bone cement syringe near the molding surface to allow the bone cement to be delivered through the channel with minimal travel and with minimal loss of pressure so that the cement may be evenly distributed between the bone and the molding surface upon hand operation of the syringe; and wherein the mold further includes an elastic collar integrally formed about the periphery of the body, the collar being sized to rest against the bone and to hold the molding surface spaced-apart from the bone, and wherein the elasticity of the mold allows the mold to be removed from the hip joint cavity without substantial removal of the cement when the cement reaches a determined viscosity and the hip joint implant placed therein.
The invention deals with a body for distributing bone cement for the anchoring of implants in a prepared hollow in bone corresponding with the outer geometry of the implant, as well as an associated method. From the patent CH 639549 a cap is known which may be mounted on a cement syringe and ends in an elastic conical mouthpiece for pressing against the outer edge of a hollow in the bone during injection of the cement. One disadvantage of this arrangement is that large amounts of the cement which sets in dependence upon time and heats up in dependence upon the amount, is moved into the hollow in the bone in order to achieve a compression and that subsequently upon inserting the implant still larger amounts of cement are forced out of the hollow in the bone into the surrounding field of operation. Another possibility consists in the employment of hollow implants with a distributor system which may be fed from outside as described in the patent U.S. Pat. No. 4,274,163. One disadvantage of this arrangement consists in that a weakening of the implant arises from the distributor system, that in relation to the relatively small cross-sections of passage long paths of flow arise with surfaces flowing together, and that the production of the implant becomes more costly through a distributor system integrated in that fashion. The invention takes these circumstances into account. It has the problem, without impairment of the structure of the implant, of bringing the bone cement into its final position with respect to the hollow in the bone. It solves this problem by the characterizing portions as described in the following summaries: A body is provided for distributing bone cement for the anchoring of implants in a hollow prepared in a bone to correspond with the outer geometry of the implant, characterized in that the body exhibits a mould which is copied from the outer shape of an implant which is to be inserted, especially a hipjoint socket, the mould being provided at the edge with a collar which closes off the hollow in the bone, whilst the body exhibits a passage through to the volume so enclosed, against which a bone cement syringe may be fitted, and that the body consists at least in the region of the collar of an elastic plastics which fits tightly against the hollow in the bone in the region of the collar. A method of distributing bone cement in a hollow in a bone by a body is provided and is characterized in that in a first step the body which is copied from the outer shape of the implant which is to be inserted, is pressed by a collar against the hollow in the bone; in a second step bone cement is injected via a passage in the body and distributed under after-pressure well into the microstructure of the surface of the hollow in the bone; in a third step the body is removed from the hollow in the bone, the bone cement remaining preshaped in the hollow in the bone with a view to the actual implant; in a fourth step the actual implant is inserted in the hollow in the bone and the excess bone cement swelling out at the edge is removed; and in a fifth step the implant is held in an aligned position until the bone cement has set. The invention has the advantage that large cross-sections are possible for feeding the space between the implant and the hollow in the bone, that only as much bone cement as is necessary for the setting and connection is introduced into the hollow in the bone, and that because of the large cross-sections of feed a designed application pressure may be maintained very exactly during filling of the hollow in the bone. A body for distributing bone cement rests by an elastic collar against the outer edge of a hollow in the bone and has a passage through into the hollow in the bone, into which a syringe for bone cement may be inserted. In the hollow in the bone the body is made as a displacement body having the shape of the implant to be inserted later. During injection into the space between the body and the hollow in the bone a designed pressure is maintained until the viscosity of the bone cement is adequate for taking the body out of the hollow in the bone without bone cement flowing back. Subsequently the actual implant may be pressed into the thus prepared but still plastically deformable countermould of bone cement. Advantageous further developments of the invention are set forth as follows. In one aspect, the body is characterized in that at high temperature the plastics is sufficiently stable to be able to be sterilized by the steam at 134° C. In another aspect, the body is characterized in that at least its surface in the region of the collar consists of silicone rubber. In a further aspect, the body is wetted with a release agent. In yet a further aspect, the release agent comprises a sterile physiological cooking-salt solution. The invention is described below with the aid of embodiments. There is shown in: FIG. 1--a longitudinal section through a body designed for a hip joint socket and inserted in a hollow in a bone, after the injection of bone cement; FIG. 2--a plan of the body in FIG. 1; FIG. 3--a longitudinal section corresponding with the arrangement in FIG. 1 before the injection of bone cement, in which the body rests by a collar against the endface of the hollow in the bone and is centred by lugs inside the hollow in the bone; and FIG. 4--a plan of the body in FIG. 3. In FIGS. 1 and 2 a body 2 with a collar 4 in the form of a bead 12 of elastic plastics 7 such, for example, as silicone rubber 9, rests against the edge of a hollow 1 in the bone. The mould 3 projecting into the hollow 1 in the bone corresponds in shape with that of a hip joint socket which is to be inserted later. The body 2 has a passage 5 against which a bone cement syringe 6 is pressed in order to compensate the hydrostatic upthrust while bone cement 8 is being pressed in. Through the large cross-section of passage 5 and the short paths of flow scarcely any loss of pressure results until the bone cement has reached the space between the mould 3 and the hollow 1 in the bone. A pressure deemed an optimum at which the bone tissue 11 in the hollow 1 in the bone does not become overcharged with bone cement 8, may be maintained very exactly. When in accordance with the time pattern the bone cement has reached a viscosity at which it no longer flows under gravity into thin layers such as into the space between the mould 3 and the hollow in the bone, the body 2 may be loosened. It has been found that in doing so a separating agent such, for example, as a physiological cooking-salt solution, is of advantage if it has been applied before the injection of the bone cement 8 into the body 2. After the loosening of the mould 3 the actual implant is pressed into the still plastically deformable bone cement. Because of the fine microstructure of the bone tissue 11 and the now higher viscosity of the bone cement 8, overcharging of the former with bone cement is scarcely still possible. The body 2 is reusable. But it must be sufficiently stable at high temperature to be able like, for example, silicone rubber, to be sterilized by steam at 134° C. In FIG. 3 and 4 a body 2 for a hip joint socket is fitted to a prepared hollow 1 in the bone and by a collar 4 which projects sideways over the hollow in the bone, bears against the outer bone tissue. The sealing part of the collar 4 is coated with silicone rubber 4 in order to equalize unevennesses in the bone tissue. The sealing action is limited to the extent that enclosed air can escape during injection of the bone cement. For better centreing of the body 2 lugs 13 fitted below the collar 4, bear inside the hollow 1 in the bone against the bone tissue 11.

Description

Topics

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Patent Citations (9)

    Publication numberPublication dateAssigneeTitle
    US-3866248-AFebruary 18, 1975Abcor IncCement restrictor for total hip operations
    US-4274163-AJune 23, 1981The Regents Of The University Of CaliforniaProsthetic fixation technique
    US-4399814-AAugust 23, 1983Massachusetts Institute Of TechnologyMethod and apparatus for pressure-coated bones
    US-4488549-ADecember 18, 1984University Of ExeterPressurization of cement in bones
    US-4815454-AMarch 28, 1989Dozier Jr John KApparatus and method for injecting bone cement
    US-4892550-AJanuary 09, 1990Huebsch Donald LEndoprosthesis device and method
    US-4896662-AJanuary 30, 1990Pfizer Hospital Products Group, Inc.Sealing device for introducing cement into a bone canal
    US-5078746-AJanuary 07, 1992Richards Medical CompanyFemoral stem distal centralizer
    US-5116377-AMay 26, 1992Bristol-Myers Squibb CompanyCementable hip prosthesis

NO-Patent Citations (0)

    Title

Cited By (242)

    Publication numberPublication dateAssigneeTitle
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    US-8657827-B2February 25, 2014Conformis, Inc.Surgical tools for arthroplasty
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    WO-2013135361-A1September 19, 2013Montanaro DanieleDevice for bone cement application, particularly for arthroprosthesis implants
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    US-2011238073-A1September 29, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-2008195216-A1August 14, 2008Conformis, Inc.Implant Device and Method for Manufacture
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    US-8306601-B2November 06, 2012The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and devising treatment
    US-8634617-B2January 21, 2014Conformis, Inc.Methods for determining meniscal size and shape and for devising treatment
    US-6273891-B1August 14, 2001Medidea LlcMethod and apparatus for aligning a prosthetic element
    US-6610079-B1August 26, 2003Linvatec CorporationFixation system and method
    US-8690945-B2April 08, 2014Conformis, Inc.Patient selectable knee arthroplasty devices
    US-2004068267-A1April 08, 2004Fraser Harvie, Graham Smith, Sample Philip B., Mccarthy Gary R., Adam James, Peter RichardsonSurgical procedures and instruments
    US-2010281678-A1November 11, 2010Conformis, Inc.Surgical Tools Facilitating Increased Accuracy, Speed and Simplicity in Performing Joint Arthroplasty
    US-7229478-B2June 12, 2007Medidea, LlcShoulder prosthesis with anatomic reattachment features
    US-9113914-B2August 25, 2015Microport Orthopedics Holdings Inc.Method for forming a patient specific surgical guide mount
    US-8551102-B2October 08, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-7025771-B2April 11, 2006Spineology, Inc.Tool to direct bone replacement material
    US-9314256-B2April 19, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-9125673-B2September 08, 2015Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-9675471-B2June 13, 2017Conformis, Inc.Devices, techniques and methods for assessing joint spacing, balancing soft tissues and obtaining desired kinematics for joint implant components
    US-8568479-B2October 29, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-9295482-B2March 29, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2011213427-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-2011213373-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-8768028-B2July 01, 2014Conformis, Inc.Methods and compositions for articular repair
    US-9216025-B2December 22, 2015Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-2010298894-A1November 25, 2010Conformis, Inc.Patient-Specific Joint Arthroplasty Devices for Ligament Repair
    US-8882847-B2November 11, 2014Conformis, Inc.Patient selectable knee joint arthroplasty devices
    WO-0230339-A1April 18, 2002Cemvac System AbArrangement in a seal used for fixing a hip joint prosthesis
    US-2010297276-A1November 25, 2010Zimmer, Inc.Spacer Mold and Methods Therefor
    US-8561278-B2October 22, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-9775680-B2October 03, 2017Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-9408615-B2August 09, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-9603711-B2March 28, 2017Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-2007016214-A1January 18, 2007Spineology, Inc.Tool to direct bone graft
    US-2011213430-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-8529630-B2September 10, 2013Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2009175978-A1July 09, 2009Biomet Manufacturing Corp.Modular Articulating Cement Spacer
    US-5741265-AApril 21, 1998Chan; Kwan-HoBone canal pressurizer
    US-2011071581-A1March 24, 2011Conformis, Inc.Surgical Tools for Arthroplasty
    US-8617242-B2December 31, 2013Conformis, Inc.Implant device and method for manufacture
    US-2011071645-A1March 24, 2011Ray Bojarski, Nam Chao, John Slamin, Philipp Lang, Wolfgang Fitz, Daniel SteinesPatient-adapted and improved articular implants, designs and related guide tools
    US-9286686-B2March 15, 2016The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and assessing cartilage loss
    US-2010305574-A1December 02, 2010Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-9308053-B2April 12, 2016Conformis, Inc.Patient-specific joint arthroplasty devices for ligament repair
    WO-2005107826-A3March 16, 2006Degradable Solutions Ag, Fabrizio Alexandro Maspero, Kurt RuffieuxInitially plastically deformable bone implant compositions
    US-7717956-B2May 18, 2010Conformis, Inc.Joint arthroplasty devices formed in situ
    US-2008243127-A1October 02, 2008Conformis, Inc.Surgical Tools for Arthroplasty
    US-9642632-B2May 09, 2017Microport Orthopedics Holdings Inc.Orthopedic surgical guide
    US-9017334-B2April 28, 2015Microport Orthopedics Holdings Inc.Patient specific surgical guide locator and mount
    US-9020788-B2April 28, 2015Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-9220516-B2December 29, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-9326780-B2May 03, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools incorporating anatomical relief
    US-9486226-B2November 08, 2016Conformis, Inc.Tibial guides, tools, and techniques for resecting the tibial plateau
    US-8265730-B2September 11, 2012The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and preventing damage
    US-8926706-B2January 06, 2015Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-8945230-B2February 03, 2015Conformis, Inc.Patient selectable knee joint arthroplasty devices
    US-2008281328-A1November 13, 2008Conformis, Inc.Surgical Tools for Arthroplasty
    US-7534263-B2May 19, 2009Conformis, Inc.Surgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty
    US-9089342-B2July 28, 2015Microport Orthopedics Holdings Inc.Patient specific surgical guide locator and mount
    US-2011029091-A1February 03, 2011Conformis, Inc.Patient-Adapted and Improved Orthopedic Implants, Designs, and Related Tools
    US-9387079-B2July 12, 2016Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-5954728-ASeptember 21, 1999Sulzer Orthopaedie AgFilling apparatus for bone cement
    US-9308005-B2April 12, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2011218584-A1September 08, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-8112142-B2February 07, 2012The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and devising treatment
    US-9333085-B2May 10, 2016Conformis, Inc.Patient selectable knee arthroplasty devices
    US-8551103-B2October 08, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-2005143748-A1June 30, 2005Carlos Negroni, Henniges Bruce D., Tague Christopher M.Pressurizer
    US-8562611-B2October 22, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-8337507-B2December 25, 2012Conformis, Inc.Methods and compositions for articular repair
    US-8343218-B2January 01, 2013Conformis, Inc.Methods and compositions for articular repair
    US-8377129-B2February 19, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-8900322-B2December 02, 2014Brian C. de BeaubienAntibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis
    US-9180015-B2November 10, 2015Conformis, Inc.Implants for altering wear patterns of articular surfaces
    US-9358018-B2June 07, 2016Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-9308091-B2April 12, 2016Conformis, Inc.Devices and methods for treatment of facet and other joints
    US-8906107-B2December 09, 2014Conformis, Inc.Patient-adapted and improved orthopedic implants, designs and related tools
    US-2011230888-A1September 22, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    EP-1575460-A2September 21, 2005Conformis, Inc.Patient selectable total and partial joint arthroplasty devices and surgical tools
    US-5976149-ANovember 02, 1999Medidea, LlcMethod and apparatus for aligning a prosthetic element
    US-7799077-B2September 21, 2010Conformis, Inc.Minimally invasive joint implant with 3-dimensional geometry matching the articular surfaces
    US-7981158-B2July 19, 2011Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-6821300-B2November 23, 2004Medidea LlcApparatus for positioning prosthetic component prior to cement injection
    US-2010329530-A1December 30, 2010Conformis, Inc.Patient Selectable Knee Joint Arthroplasty Devices
    US-8562618-B2October 22, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-2007276224-A1November 29, 2007The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the Condition of a Joint and Devising Treatment
    US-2005267584-A1December 01, 2005Burdulis Albert G Jr, Wolfgang Fitz, Philipp Lang, Daniel Steines, Konstantinos Tsougarakis, Rene Vargas-Voracek, Hacene Bouadi, O'regan Cecily A, David MillerPatient selectable knee joint arthroplasty devices
    US-2010274534-A1October 28, 2010Conformis, Inc.Automated Systems for Manufacturing Patient-Specific Orthopedic Implants and Instrumentation
    US-8556971-B2October 15, 2013Conformis, Inc.Joint arthroplasty devices formed in situ
    US-9700971-B2July 11, 2017Conformis, Inc.Implant device and method for manufacture
    US-2005251266-A1November 10, 2005Maspero Fabrizio A, Kurt RuffieuxBiocompatible bone implant compositions and methods for repairing a bone defect
    US-2011144760-A1June 16, 2011Conformis, Inc.Patient-Specific and Patient-Engineered Orthopedic Implants
    US-6361731-B1March 26, 2002Biomet, Inc.Method of forming a temporary implant
    US-8551169-B2October 08, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-2006235534-A1October 19, 2006Gertzman Arthur A, Merboth Barbara L, Michael Schuler, Steiner Anton J, Semlar Eric J, Yannariello-Brown Judith IVertebral disc repair
    US-8153148-B2April 10, 2012Degradable Solutions AgPorous biocompatible implant material and method for its fabrication
    US-8337501-B2December 25, 2012Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2011213428-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-2010217401-A1August 26, 2010De Beaubien Brian CAntibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis
    US-2008015433-A1January 17, 2008The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the Condition of a Joint and Devising Treatment
    US-2013206626-A1August 15, 2013Ralf Schindel, Reto Artusi, Ronald BauerMethod and device for fabricating a patient-specific implant
    US-8900323-B2December 02, 2014Brian C. de BeaubienAntibiotic delivery system for treating an infected synovial joint during re-implantation of an orthopedic prosthesis
    US-8940046-B2January 27, 2015Maxx Orthopedics, Inc.Method of implanting a prosthesis device using bone cement in liquid form
    US-8480754-B2July 09, 2013Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-2003216669-A1November 20, 2003Imaging Therapeutics, Inc.Methods and compositions for articular repair
    US-2007100462-A1May 03, 2007Conformis, IncJoint Arthroplasty Devices
    US-2010305573-A1December 02, 2010Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-6379391-B1April 30, 2002Medidea, LlcMethod and apparatus for positioning a prosthetic element relative to a bone to achieve a desired orientation
    US-2010174376-A1July 08, 2010Conformis, Inc.Joint Arthroplasty Devices Formed In Situ
    US-6155812-ADecember 05, 2000Biomet, IncCement mold for a temporary implant
    US-9241725-B2January 26, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-8932363-B2January 13, 2015Conformis, Inc.Methods for determining meniscal size and shape and for devising treatment
    US-8965088-B2February 24, 2015Conformis, Inc.Methods for determining meniscal size and shape and for devising treatment
    US-8439926-B2May 14, 2013Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-8998915-B2April 07, 2015Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-RE43282-EMarch 27, 2012The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and devising treatment
    US-8682052-B2March 25, 2014Conformis, Inc.Implants for altering wear patterns of articular surfaces
    US-2008027546-A1January 31, 2008Semler Eric J, Yannariello-Brown Judith I, Jacobs Morris LPacked demineralized cancellous tissue forms for disc nucleus augmentation, restoration, or replacement and methods of implantation
    US-2005209704-A1September 22, 2005Maspero Fabrizio A, Kurt RuffieuxPorous biocompatible implant material and method for its fabrication
    US-8641716-B2February 04, 2014Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-9107679-B2August 18, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-9675365-B2June 13, 2017Microport Orthopedics Holdings Inc.System and method for anterior approach for installing tibial stem
    US-2011213431-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-8460304-B2June 11, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-7468075-B2December 23, 2008Conformis, Inc.Methods and compositions for articular repair
    US-8771365-B2July 08, 2014Conformis, Inc.Patient-adapted and improved orthopedic implants, designs, and related tools
    US-7881768-B2February 01, 2011The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and devising treatment
    US-2010168754-A1July 01, 2010Conformis, Inc.Joint Arthroplasty Devices and Surgical Tools
    US-9084617-B2July 21, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-8899959-B2December 02, 2014Zimmer Orthopaedic Surgical Products, Inc.Spacer molds with releasable securement
    US-8568480-B2October 29, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-2013144301-A1June 06, 2013Zimmer, Inc.Shroud for use with prosthetic implant
    US-9125672-B2September 08, 2015Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-2011213374-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-9883870-B2February 06, 2018Microport Orthopedics Holdings Inc.Method for forming a patient specific surgical guide mount
    US-8556906-B2October 15, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-2004204760-A1October 14, 2004Imaging Therapeutics, Inc.Patient selectable knee arthroplasty devices
    US-8617172-B2December 31, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-9283017-B2March 15, 2016Zimmer, Inc.Shroud for use with prosthetic implant
    US-8551099-B2October 08, 2013Conformis, Inc.Surgical tools for arthroplasty
    US-9278002-B2March 08, 2016Gregory Merrell, Jeffrey Michael BradleyElbow antibiotic spacer implant
    US-9023050-B2May 05, 2015Conformis, Inc.Surgical tools for arthroplasty
    US-9700420-B2July 11, 2017Conformis, Inc.Implants for altering wear patterns of articular surfaces
    US-9381025-B2July 05, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2011071802-A1March 24, 2011Ray Bojarski, Nam Chao, John Slamin, Philipp Lang, Wolfgang Fitz, Daniel SteinesPatient-adapted and improved articular implants, designs and related guide tools
    US-6019766-AFebruary 01, 2000Stryker Technologies CorporationAcetabular cup cement pressurization device
    US-8066708-B2November 29, 2011Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-9220517-B2December 29, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2011213429-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-8500740-B2August 06, 2013Conformis, Inc.Patient-specific joint arthroplasty devices for ligament repair
    US-8077950-B2December 13, 2011Conformis, Inc.Methods for determining meniscal size and shape and for devising treatment
    US-2008113008-A1May 15, 2008Karen RocheAbsorbent fabric implant
    US-8480389-B2July 09, 2013Zimmer Orthopedic Surgical Products, Inc.Spacer mold and methods therefor
    WO-9834557-A1August 13, 1998Medidea, L.L.C.Procede et appareil d'alignement d'un element prothetique
    US-2014364954-A1December 11, 2014Gregory Merrell, Jeffrey Michael BradleyElbow antibiotic spacer implant
    US-2011139761-A1June 16, 2011Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Flux-cored wire for stainless steel arc welding
    US-2009228113-A1September 10, 2009Comformis, Inc.Edge-Matched Articular Implant
    US-2008275452-A1November 06, 2008Conformis, Inc.Surgical Cutting Guide
    US-2011066193-A1March 17, 2011Conformis, Inc.Surgical Tools for Arthroplasty
    US-8083745-B2December 27, 2011Conformis, Inc.Surgical tools for arthroplasty
    US-8226727-B2July 24, 2012Vot, LlcFemoral prosthesis
    US-8862202-B2October 14, 2014The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and preventing damage
    US-2010217338-A1August 26, 2010Wright Medical Technology, Inc.Patient Specific Surgical Guide Locator and Mount
    US-2011213368-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-8920152-B2December 30, 2014Biomet Manufacturing, LlcModular articulating cement spacer
    US-8369926-B2February 05, 2013The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and devising treatment
    US-2010212138-A1August 26, 2010Wright Medical Technology, Inc.Method For Forming A Patient Specific Surgical Guide Mount
    US-8951259-B2February 10, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-9566075-B2February 14, 2017Microport Orthopedics Holdings Inc.Patient specific surgical guide locator and mount
    US-8234097-B2July 31, 2012Conformis, Inc.Automated systems for manufacturing patient-specific orthopedic implants and instrumentation
    US-8801983-B2August 12, 2014Zimmer Orthopaedic Surgical Products, Inc.Spacer mold and methods therefor
    US-2005234461-A1October 20, 2005Burdulis Albert G Jr, Wolfgang Fitz, Rene Vargas-VoracekSurgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty
    US-2003187513-A1October 02, 2003Durniak Todd D.System and method for delivering biological materials to a prosthesis implantation site
    US-9579110-B2February 28, 2017Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2005249773-A1November 10, 2005Maspero Fabrizio A, Kurt RuffieuxBiocompatible bone implant compositions and methods for repairing a bone defect
    US-8974539-B2March 10, 2015Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-2004138754-A1July 15, 2004Imaging Therapeutics, Inc.Minimally invasive joint implant with 3-Dimensional geometry matching the articular surfaces
    US-9649117-B2May 16, 2017Microport Orthopedics Holdings, Inc.Orthopedic surgical guide
    US-8206143-B2June 26, 2012Biomet Manufacturing Corp.Modular articulating cement spacer
    US-9375222-B2June 28, 2016Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-8414286-B2April 09, 2013Zimmer Orthopaedic Surgical Products, Inc.Spacer molds with releasable securement
    US-6017350-AJanuary 25, 2000Depuy Orthopaedics, Inc.Pressurizer apparatus
    US-8951260-B2February 10, 2015Conformis, Inc.Surgical cutting guide
    US-2004147927-A1July 29, 2004Imaging Therapeutics, Inc.Methods for determining meniscal size and shape and for devising treatment
    US-2013211369-A1August 15, 2013Brian C. de BeaubienAntibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis
    US-8709089-B2April 29, 2014Conformis, Inc.Minimally invasive joint implant with 3-dimensional geometry matching the articular surfaces
    US-8585708-B2November 19, 2013Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-RE46669-EJanuary 16, 2018Joint Purification Systems LlcAntibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis
    US-8545569-B2October 01, 2013Conformis, Inc.Patient selectable knee arthroplasty devices
    US-2003055502-A1March 20, 2003Philipp Lang, Barry Linder, Daniel SteinesMethods and compositions for articular resurfacing
    US-2011087332-A1April 14, 2011Ray Bojarski, Nam Chao, John Slamin, Philipp Lang, Wolfgang Fitz, Daniel SteinesPatient-adapted and improved articular implants, designs and related guide tools
    US-7618451-B2November 17, 2009Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools facilitating increased accuracy, speed and simplicity in performing total and partial joint arthroplasty
    US-2004167390-A1August 26, 2004Alexander Eugene J., Andriacchi Thomas P., Philipp Lang, Daniel SteinesAssessing the condition of a joint and devising treatment
    US-8735773-B2May 27, 2014Conformis, Inc.Implant device and method for manufacture
    US-7144414-B2December 05, 2006Smith & Nephew, Inc.Surgical procedures and instruments
    US-9186161-B2November 17, 2015Conformis, Inc.Surgical tools for arthroplasty
    US-9113921-B2August 25, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-2007083266-A1April 12, 2007Vertegen, Inc.Devices and methods for treating facet joints, uncovertebral joints, costovertebral joints and other joints
    US-8556907-B2October 15, 2013Conformis, Inc.Joint arthroplasty devices and surgical tools
    US-7879103-B2February 01, 2011Musculoskeletal Transplant FoundationVertebral disc repair
    US-2011213377-A1September 01, 2011Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-6267785-B1July 31, 2001Medidea, LlcApparatus for positioning a prosthetic element to achieve a desired orientation for cementation
    US-8366771-B2February 05, 2013Conformis, Inc.Surgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty
    US-8062302-B2November 22, 2011Conformis, Inc.Surgical tools for arthroplasty
    US-2011066245-A1March 17, 2011Conformis, Inc.Minimally Invasive Joint Implant with 3-Dimensional Geometry Matching the Articular Surfaces
    US-2007203430-A1August 30, 2007The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the Condition of a Joint and Assessing Cartilage Loss
    US-2009228114-A1September 10, 2009Ron Clark, David Blakemore, Ross MackFemoral Prosthesis
    US-6979336-B2December 27, 2005Depuy Orthopaedics, Inc.System and method for delivering biological materials to a prosthesis implantation site
    US-2002010472-A1January 24, 2002Kuslich Stephen D., Francis Peterson, Ahern James W.Tool to direct bone replacement material
    US-2010303317-A1December 02, 2010Conformis, Inc.Methods for Determining Meniscal Size and Shape and for Devising Treatment
    US-2009222014-A1September 03, 2009Conformis, Inc.Patient Selectable Joint Arthroplasty Devices and Surgical Tools
    US-8036729-B2October 11, 2011The Board Of Trustees Of The Leland Stanford Junior UniversityAssessing the condition of a joint and devising treatment
    US-2009306676-A1December 10, 2009Conformis, Inc.Methods and compositions for articular repair
    US-9186254-B2November 17, 2015Conformis, Inc.Patient selectable knee arthroplasty devices
    US-RE46283-EJanuary 24, 2017Joint Purification Systems LlcAntibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis
    US-8454706-B2June 04, 2013Brian C. de BeaubienAntibiotic delivery system and method for treating an infected synovial joint during re-implantation of an orthopedic prosthesis
    US-7959683-B2June 14, 2011Musculoskeletal Transplant Foundation, Spineology, Inc.Packed demineralized cancellous tissue forms for disc nucleus augmentation, restoration, or replacement and methods of implantation
    US-8163030-B2April 24, 2012Degradable Solutions AgBiocompatible bone implant compositions and methods for repairing a bone defect
    US-9495483-B2November 15, 2016Conformis, Inc.Automated Systems for manufacturing patient-specific orthopedic implants and instrumentation
    US-2009276045-A1November 05, 2009Conformis, Inc.Devices and Methods for Treatment of Facet and Other Joints
    US-8623026-B2January 07, 2014Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools incorporating anatomical relief
    US-2004153079-A1August 05, 2004Imaging Therapeutics, Inc.Methods for determining meniscal size and shape and for devising treatment
    US-9055953-B2June 16, 2015Conformis, Inc.Methods and compositions for articular repair
    US-2010102484-A1April 29, 2010Sean Haney, Sporer Scott MSpacer molds with releasable securement
    US-2009222103-A1September 03, 2009Conformis, Inc.Articular Implants Providing Lower Adjacent Cartilage Wear
    US-9439767-B2September 13, 2016Conformis, Inc.Patient-adapted and improved articular implants, designs and related guide tools
    US-7796791-B2September 14, 2010Conformis, Inc.Methods for determining meniscal size and shape and for devising treatment
    US-9066728-B2June 30, 2015Conformis, Inc.Surgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty
    US-9107680-B2August 18, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-8122582-B2February 28, 2012Conformis, Inc.Surgical tools facilitating increased accuracy, speed and simplicity in performing joint arthroplasty
    US-2010305708-A1December 02, 2010Conformis, Inc.Patient Selectable Knee Joint Arthroplasty Devices
    US-9072531-B2July 07, 2015Conformis, Inc.Patient selectable joint arthroplasty devices and surgical tools
    US-8808303-B2August 19, 2014Microport Orthopedics Holdings Inc.Orthopedic surgical guide