Abstract: A medical implant comprising a plurality of biocomposite layers, each layer comprising a polymer and a plurality of uni-directionally aligned continuous reinforcement fibers. The medical implant is suitable for load-bearing orthopedic implant applications and comprises one or more biocomposite materials where sustained mechanical strength and stiffness are critical for proper implant function.

Abstract: A customizable implant made of plastic including a thermoplastic which is reinforced with long fibers arranged multidirectionally in a targeted manner and has a modulus of elasticity E of 10-70 GPa is provided. A system for producing a customizable implant including a device for collecting patient data regarding the environment into which an implant is to be inserted, a computer program for creating a model for a customized implant based on the patient data collected, and a device for producing the customized implant based on the calculated model by means of 3D printing and/or laser sintering is also provided.

Abstract: A load dissipating arthroplasty prosthesis comprising a shell, an articular device extending into the shell through a collar defined in the sell, a head and neck portion of the articular device extending from the collar, a shaft portion of the articular device extending into the shell, and a plurality of shock absorbing arcuate linkers spacing and allowing limited movement between the shell and the articular device.

Abstract: This invention describes a partially absorbable, fiber-reinforced composite in the form of a ring, or a suture-like thread, with modified terminals for use as a controlled delivery system of at least one bioactive agent, wherein said composite comprising an absorbable fiber construct capable of providing time-dependent mechanical properties of a biostable elastomeric matrix containing an absorbable microparticulate ion-exchanger to modulate the release of the bioactive agent(s) for a desired period(s) of time at a specific biological site; this can be a vaginal canal, peritoneal cavity, scrotum, prostate gland, an ear loop or subcutaneous tissue. Such drug delivery systems can be used for the local administration of at least one bioactive agent, including those used as contraceptive, antimicrobial, anti-inflammatory and/or antiviral agents as well as for cancer treatment.

Abstract: An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes a metallic foam shell and a metallic core. The metallic core includes a neck configured to receive a femoral head component and a stem extending through the metallic foam shell.

Abstract: An orthopaedic prosthesis for use in a hip replacement surgery. The orthopaedic prosthesis includes a metallic foam shell and a metallic core. The metallic core includes a neck configured to receive a femoral head component and a stem extending through the metallic foam shell.

Abstract: A stem 8 has the following elements made from FRP: an upper outer shell 4U, a main structure upper half 3U, a main structure lower half 3L, and a lower outer shell 4L when the stem is placed in a flat state. The elements are integrated into one piece by stacking the elements and applying heat and pressure to melt resins impregnated in the FRP structural elements. Each outer shell is a curved prepreg sheet formed by impregnating carbon fibers arranged at angle of ±45 degrees with a thermoplastic resin, and each upper and lower halve is an evenly stacked part in which prepreg sheets are stacked. Overlapping section 5 of the upper and lower outer shells are formed such that the left and right portions of a main structure 3 formed by integrating the upper and lower halves 3U, 3L does not have a stepped outer surface.

Abstract: A composition, a medical implant constructed from the composition, and a method of making the composition are described. The composition is a composite material, comprising a porous, reticulated, open cell network having at least part of its surface coated with blue-black or black oxidized zirconium.

Abstract: A femoral stem for canines or humans is made bone-compliant by use of a thick sintered titanium body in a proximal bone contacting region and a polymeric or ceramic body in a distal bone contacting region of the femoral stem. An elastic modulus is thereby engineered to match that of bone tissue. The porous sintered titanium body is created by sintering spheres of titanium. It is bonded to a central solid biocompatible metallic body by diffusion bonding. The distal region has a biocompatible polymeric body or biocompatible cement body. When compression molded the distal region develops an elastic modulus matching that of bone tissue. The proximal region has a porosity designed to encourage bone ingrowth.

Abstract: An artificial bone includes a bone-shaped hollow metal body confining a sealed space and having two opposite closed ends, and a porous structure disposed in the sealed space. A method for making the artificial bone includes the steps of: positioning a metal tube in a bone-shaped mold cavity of a mold, hydro-forming the metal tube into a bone-shaped hollow tube in the bone-shaped mold cavity by injecting a high pressure fluid into the metal tube, disposing a crumple of metal wire into the bone-shaped hollow tube, depositing a metal coating on the metal wire and an inner surface of the bone-shaped hollow tube to form a porous structure in the bone-shaped hollow tube, and sealing the bone-shaped hollow tube.

Abstract: A human or animal implant device including a first, inner sealed silicone sheet sac, a second, intermediate sealed silicone sheet sac completely surrounding the first, inner sac, and a third, outer sealed silicone sheet sac completely surrounding the second sac. Each sac has a coating of beeswax on inner and outer walls thereof, and the first, inner sac is filled with a substantially sterile liquid material, preferably of viscosity at least 15 cp. The second, intermediate sac and the third, outer sac are filled with aqueous saline solution.

Abstract: Arthroplasty devices having improved bone in growth to provide a more secure connection within the body. Different embodiments disclosed include devices having threaded intramedullary components, devices configured to receive bone growth promoting substances, devices with resorbable components, and devices configured to reduce shear stress.

Abstract: A prosthetic device and method of using the device is disclosed. The device may include a busing insert, a femoral head component, a neck component that may be either integral or modular, and a stem component having a proximal body portion and a distal portion. The proximal body portion may include such features as a recess for receiving a portion of the modular neck, a proximal conical flare having a bottom surface with a rounded contour, an anterior metaphyseal tapering flare, as well as other features. The distal portion may include a coronal slot, a sagittal slot, a helical slot, or a combination thereof. The above features may be provided for increasing the intrinsic stability of the device and for resisting torsional loads placed on the device.

Abstract: A cement jacket for a cemented artificial joint stem, the cement jacket including a main body with a hollow interior and an open upper end for receiving and enclosing at least a part of a stem of an artificial joint, the cement jacket being shaped and adapted for longitudinal insertion in an opening formed in a bone canal of a human body, the cement jacket being made of cement and reinforced by imbedded wire or fiber and having an inner surface coated with a plastic film having a high resistance to abrasion, and the outer surface of the cement jacket is formed with discharging paths in the longitudinal direction so that excessive cement paste previously poured into the bone canal for the surgical purpose can be easily discharged upward at the time of inserting the jacket.

Abstract: The present invention provides an improved method and apparatus for preparing a femur to receive a modular prosthetic femoral component. A distal reamer having a plurality of sets of depth marks is utilized to prepare the distal femoral canal. The sets of depth marks on the distal reamer correspond in number to the number of distal femoral stems available for use with the particular modular prosthetic femoral implant set. Each set of depth marks comprises a plurality of indicator rings corresponding in number to the number of proximal bodies adapted for utilization with the prosthetic femoral component set. Prior to distal reaming, the appropriate set of depth marks and indicator ring is chosen corresponding to the modular components the surgeon wishes to utilize. Reaming then takes place until the chosen indicator ring is aligned with a reference point (e.g., the top of the greater trochanter). Upon reaching the appropriate reaming depth, the distal reamer is left in place in the femoral canal.

Abstract: An implant is formed of an expandable material. An opening is formed in a bone in a patient's body. At least a portion of the implant is positioned in the opening in the bone in the patient's body. The implant is retained against movement relative to the bone in the patient's body by absorbing body fluid with the implant and expanding the implant while the implant is disposed in the opening in the bone in the patient's body. The implant may be a hip replacement member.

Abstract: A strong, porous article useful as a bone substitute material. The article comprises a continuous strong framework structure having struts defining interstices which interconnect throughout the bulk volume, and may have ceramic or osteoconductive material occupying at least a portion of the same bulk volume as the framework structure. Either as a coating on the strong framework struts or between the framework struts and the ceramic or osteoconductive-osteoinductive materials is a resilient material which serves to distribute stresses within the article.

Abstract: The present invention discloses a side-dependent prosthetic device. The side-dependent prosthetic device is a composite prosthetic device with a longitudinal direction. The composite prosthetic device includes a plurality of plies wherein each ply being composed of a plurality of reinforced fibers aligned in a ply orientational angle &thgr;i relative to the longitudinal direction of the prosthetic device, where i=1,2,3, . . . ,N and N being the number of the plies. The plurality of plies are laminated together for forming the prosthetic device wherein the ply orientational angles being arranged such that &thgr;1+&thgr;2+&thgr;3+ . . . +&thgr;N−0 thus forming an unbalanced composite prosthetic device.