Class 623/23.3 - Porous

Subclass of Class 623 - Prosthesis (i.e., artificial body members), parts thereof, or aids and accessories therefor
Definition: Subject matter wherein the outside surface of the artificial
No. of patents: 29
Last issue date: 02/26/2008

Number	Title	Issue Date
7335314	Method of making an implantable medical device An implantable medical device, such as a stent or graft, having asperities on a designated region of its outer surface is disclosed. The asperities can serve to improve retention of one or more layers of a coating on the device and to increase the amount of coating ...	02/26/2008
7261741	Prosthesis with resorbable collar A articulating hemiarthroplasty prosthesis (10) for use in arthroplasty is provided. The prosthesis includes a stem (12) for implantation at least partially within the medullary canal (14) of a long bone (16) and a collar (20). The...	08/28/2007
7211113	Hip prosthesis An endoprosthesis utilizes a biomechanical structure based on the lever model of first degree. Contrary to the widespread practice, the inventive structure has a stem placed inside the femur bone, which is not rigidly attached to this bone. Accordingly, the bone, fo...	05/01/2007
7182784	Prosthetic devices employing oxidized zirconium and other abrasion resistant surfaces contacting surfaces of cross-linked polyethylene Orthopedic implants which include the components of zirconium or zirconium-based alloys having surfaces coated with oxidized zirconium or alternatively, other orthopedic implants comprising abrasion resistant surfaces contacting surfaces of cross-linked polyethylene...	02/27/2007
7147813	Neovascularization promoting membrane for bioimplants A method of addressing a condition of a living body comprising the steps of using an energy beam to form a set of pores in a work piece biocompatible membrane. The pores should have a mean area of less than 500 μm through the biocompatible membrane, thereby produci...	12/12/2006
6994731	Prosthetic implant A highly polished femoral implant (1) has a proximal neck portion (10), a distal tip portion (30), and an elongate stem portion (20) that extends from the neck portion to the tip portion. The stem portion (20) has a proximal or met...	02/07/2006
6953477	Laterally expandable cage A laterally expandable spinal implant includes a central body and two wings that are adapted to be received within an inner chamber formed within the central body. The wings have guide rails that fit into grooves defined in the central body. To ensure that the impla...	10/11/2005
6945448	Method for attaching a porous metal layer to a metal substrate A method for attaching a porous metal layer to a dense metal substrate, wherein the method is particularly useful in forming orthopedic implants such as femoral knee components or acetabular cups. The method, in one embodiment thereof, comprises providing a structur...	09/20/2005
6913623	Two piecefused femoral hip stem An orthopedic implant includes a metal core having a first end, a second end, a first elastic modulus, and a first porosity. A proximal body is fused directly onto the metal core between the first and second ends. The proximal body has a second elastic modulus, whic...	07/05/2005
6875386	Neovascularization promoting membrane for bioimplants A method of producing a biocompatible microporous membrane comprising the steps of providing a biocompatible membrane and using an energy beam to form a set of pores having a minor axis of less than 15 μm through the biocompatible membrane. One embodiment includes ...	04/05/2005
6514288	Prosthetic stem with strengthening rib The present invention provides an improved prosthetic stem for implantation in a bone. Specifically, the present invention provides a prosthetic femoral stem having a strengthening rib protruding from the substrate thereof and being flush with a porous co...	02/04/2003
6494916	Apparatus for replacing musculo-skeletal parts A prosthetic implant that contains a stem integrally connected to a neck, a head that sits on top of the neck, and a porous assembly disposed around them stem. The porous assembly contains a first porous tube and a second porous tube, wherein the second p...	12/17/2002
6312473	Orthopedic implant system It is an object of the present invention to provide an improved orthopedic implant system with satisfied biological, mechanical and morphological compatibilities. Solid metal femoral stem and solid metal acetabular head are covered with diffusion-bonded f...	11/06/2001
6085476	Transportable building form A transportable form structure for use in making a building. In accordance with the invention modular interlocking form blocks are stacked on a base frame and then secured so that the blocks do not become dislodged when encountering stresses during transp...	07/11/2000
6007581	Asymmetric hip stem An improved asymmetric femoral hip stem component for use in cementless hip replacement procedures is described. The stem comprises a proximal region having a novel three-dimensional configuration to allow for better fit and stability of the stem within t...	12/28/1999
6008431	Bone prosthesis with protected coating for penetrating bone intergrowth A bone prosthesis has a growth enhancement coating recessed in and protected by its surface topography. The topographic features define gaps under a few millimeters which are readily spanned by new bone growth, while the features protect the coating from ...	12/28/1999
6008432	Metallic texture coated prosthetic implants A layer of material is interposed between a metallic texture coating and the substrate of a component of a prosthetic implant, the layer being bonded to the substrate and, in turn, receiving the metallic texture coating so as to deter propagation of fatig...	12/28/1999
5672284	Method of making orthopaedic implant by welding A method of forming an orthopaedic implant having a porous surface, the method including the steps of providing a porous surface including a porous layer attached to a substantially solid layer; positioning the porous layer on the orthopaedic implant; pro...	09/30/1997
5514184	Artificial joint having porous portion A total hip replacement type artificial joint comprising a stem and a socket, the stem being provided with a head at the upper end thereof and comprising a porous portion as an upper portion, a protector located under and along the porous portion and at t...	05/07/1996
5507833	Hip replacement system and method for implanting the same A joint replacement system particularly useful in total hip arthroplasty includes a prosthesis presenting a macrotextured dimpled surface thereon for promoting biological fixation of the prosthesis to the surrounding bone. The prosthesis may be, for examp...	04/16/1996
5258034	Femoral prosthesis The present invention provides a prosthesis having a stem and upper body part. The upper body part is coated in a material to promote the ingrowth of bone therein and the lower portion of the stem is coated by a material which will be absorbed during the ...	11/02/1993
5013324	Prosthetic implant with wrapped porous surface A prosthetic implant including a porous pad separate from the stem of the implant and in which the pad is adapted to be wrapped around the stem for attachment thereto. The pad is first precontoured into a preliminary shape and is then wrapped about the st...	05/07/1991
5007931	Porous coated prosthesis An artificial implant includes an elongated stem member which is intended for cementless fixation in the medullary canal of a long bone. The stem member is provided with one or more longitudinally extending channels. A porous medium for enabling and encou...	04/16/1991
5004476	Porous coated total hip replacement system Hip joint prosthesis for replacing diseased or defective joints including a femoral stem, vacuum cast of cobalt-chromium-molybdenum and hot isostatically pressed (HIP'd) both before and after porous coating to provide an additional 50% greater strength in...	04/02/1991
4919665	Implantation of articulating joint prosthesis An intramedullary prosthesis, particularly but not exclusively a hip prosthesis, is provided comprising an articulating member at one end and a stem at the other. The stem is shaped to conform substantially to the transverse sections of the medullary cana...	04/24/1990
4636219	Prosthesis device fabrication A process is disclosed for fabricating a biocompatible mesh screen structure for bonding to a prosthetic substrate. The process comprises providing from four to eight layers of a mesh comprising a titanium alloy and subjecting the layered structure to a t...	01/13/1987
4589883	Femoral hip prosthesis A femoral hip prosthesis comprises a stem component generally divided into a proximal portion and a substantially longer distal portion. The stem has a slight posterior bow along its length. The proximal portion includes a slight twist of from about 5° t...	05/20/1986
4536894	Hip prosthesis with flared porous bony ingrowth pads A femoral hip prosthesis is provided with porous bony ingrowth material on each of the anterior and posterior sides. The bone ingrowth materials on each side flare or expand outwardly in the proximal direction with respect to the sides of the prosthesis, ...	08/27/1985
4038703	Prosthetic devices having a region of controlled porosity An improved prosthetic device having its exterior surface formed to provide a region of controlled porosity to promote the ingrowth of bone and/or tissue. A metal coil spring is secured to a metal substrate at a plurality of points, as by being disposed i...	08/02/1977

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Class 623/23.3 - Porous