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Howmedica, Inc. Patents
Assignee:
Howmedica, Inc.
Address:
New York, NY
No. of patents:
123
Patents:


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Patent Number Title Of Patent Date Issued
D284889 Combined acetabulum sizer and drill guide July 29, 1986
D283731 Femoral hip prosthesis May 6, 1986
D282277 Guide for femoral neck osteotomy January 21, 1986
D282238 Rasp handle January 21, 1986
D274162 Distal femoral cutting jig for the implantation of a prosthetic knee June 5, 1984
D274161 Distal femoral cutting jig for the implantation of a prosthetic knee June 5, 1984
D274095 Femoral drill jig for the implantation of a prosthetic knee May 29, 1984
D274094 Tibial positioning/fixation jig for the implanation of a prosthetic knee May 29, 1984
D274093 Femoral spacer/tensor jig for the implantation of a prosthetic knee May 29, 1984
D274092 Femoral chamfer cutting jig for the implantation of a prosthetic knee May 29, 1984
D274091 Femoral chamfer cutting jig for the implantation of a prosthetic knee May 29, 1984
D274090 Transverse tibial cutting jig for the implantation of a prosthetic knee May 29, 1984
D273895 Femoral cutting jig for the implantation of a prosthetic knee May 15, 1984
D273894 Pin holder alignment guide for the implantation of a prosthetic knee May 15, 1984
D255937 Pleural cavity drainage container July 15, 1980
D253128 Container for injectable substance October 9, 1979
6106495 Methods and apparatus for delivering antibiotic powders into the femoral canal for the reduction August 22, 2000
Methods and apparatus of the present invention include encapsulating the antibiotic in fine particles of bioabsorbable polymer which will yield a constant dissolution of the antibiotic over a predefined dosing period (such as a 7-10 day period), with residual antibiotic being thereafter
6099532 Disposable monomer dispenser and vial breaker August 8, 2000
A monomer dispenser and vial breaker includes a base portion and a cap portion which is attachable to the base portion. The base portion is substantially cylindrical, has an inner seat for supporting the shoulder of an ampoule, a knurled outer gripping surface, an exteriorally threaded
5964809 Polyetheretherketone (PEEK) retaining ring for an acetabular cup assembly October 12, 1999
A prosthetic acetabular cup assembly, for receiving a ball attached to a femur, including components interlocked via a locking mechanism that includes a retaining ring fabricated at least in part using a polyaryletherketone material, such as PEEK. The locking mechanism is designed to
5954727 Acetabular cup positioning tool and method of positioning an acetabular cup September 21, 1999
A positioning tool has an elongated cylindrical section for reversibly engaging an acetabular cup which is insertable through a posterior opening in the cup. The outer diameter of a proximal portion of the cylindrical section is expandable to engage the inner wall of the cup in an in
5908423 Flexible medullary reaming system June 1, 1999
An apparatus for reaming a bone canal, such as the medullary canal of a femur, has a flexible shaft (12, 92) with a proximal end (16) for engaging a rotary transmission source. A first reamer (14, 61) is coupled to the distal end of the flexible shaft for rotation therewith to prepare th
5855581 Awls January 5, 1999
An awl suitable for both opening up a bone canal and for sizing that bone canal so as to obviate the use of a Charnley awl and the use of 4 to 5 distal reamers comprises (a) a tapered distal cutting head having a pointed first end, and a second end; and (b) a shaft attached to the se
5846245 Bone-adjusting device December 8, 1998
A method of performing angular distraction osteogenesis by drilling bone-pin holes into the first and second sides of a segmented bone, inserting bone-pins into the bone-pin holes, attaching the bone-pins in each side of the segmented bone to a distraction device and adjusting the di
5814070 Suture anchor and driver September 29, 1998
A suture anchor and driver device is described that is designed to secure a suture anchor to a bone in a patient to allow soft tissue or the like to be secured to the bone. The suture anchor itself engages the suture along the length of a passage that passes through the diameter of the d
5810830 Machining assembly and methods for preparing the medullary cavity of a femur in hip arthroplasty September 22, 1998
A machining assembly, including a of the disclosure novel broach design, are disclosed for preparing a femoral medullary cavity for receipt of a femoral prosthetic stem, wherein the configuration of the implantation site allows for the neutral alignment of the prothesis within the me
5800559 Coated femoral stem prosthesis September 1, 1998
A femoral hip component for use in hip arthroplasty has a stem portion for contact with bone cement. The stem portion is formed from a biocompatible material having a surface finish of less than about four microinches. This surface is coated with a uniform layer of material selected from
5800549 Method and apparatus for injecting an elastic spinal implant September 1, 1998
A method and apparatus for injecting an elastic spinal implant into a cavity in a spinal disc so as to treat disc degeneration are given. The method and apparatus can be used in a variety of surgical approaches with respect to the patient. An elastic spinal nucleus prosthesis is very
5792142 Cutting tip August 11, 1998
A new cutting tip and a very simple method for making the tip are given. The tip has no flutes but has a built-in chip clearance. It is self-drilling, self-tapping, and self-locating and can be positioned on a threaded or unthreaded member. When it is the tip on a suture anchor, it m
5782925 Knee implant rotational alignment apparatus July 21, 1998
A knee implant rotational alignment apparatus comprising a non-implantable femoral trial component having substantially the same configuration as a femoral implant, a cooperating tibial articulating trial component having two parallel guide rails protruding from the upper surface thereof
5776204 Asymmetric hip stem July 7, 1998
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 the femoral intramedullary canal w
5772662 Femoral fixation system June 30, 1998
A modular femoral internal implant system for use in the treatment of femoral disorders resulting from injury, disease or congenital defect includes at least three interconnectable components: 1) an elongated epiphyseal/metaphyseal implant, 2) an intramedullary rod and 3) an angled s
5728748 Non oxidizing polymeric medical implant March 17, 1998
A medical implant made of polymeric material having an increased oxidation resistance is formed by a method including the steps of placing a resin powder in a sealed container. A substantial portion of the oxygen is removed from the sealed container by either a vacuum, an oxygen absorben
5716362 Patella milling instrument February 10, 1998
A patella milling instrument has a planar base with a fixed patellar clamping element formed thereon. A movable patellar milling element is slidably mounted on the base and is movable towards and away from the fixed clamping element. A drive element is operable between the base and t
5705780 Dehydration of hydrogels January 6, 1998
A method of dehydration of bulky hydrogel samples of polyvinyl alcohol (i.e., PVA) and a method of preparation of prosthetic nuclei for vertebral discs are given. A method of gamma irradiation sterilization of PVA gel samples which does not incur the side effects of discoloration and of
5665091 Surgical broach September 9, 1997
An improved surgical broach for preparing an intramedullary canal of a bone for receiving a prosthesis is described, wherein the broach comprises a plurality of cutting teeth having different configurations and placement upon the broach for optimizing cutting efficiency and speed for imp
5658351 Intramedullary centralizer August 19, 1997
A centralizer for the stem of a cementable prosthetic orthopedic implant that is implanted into the medullary canal of a bone has a hollow annular body with a tapered interior surface for receiving a tapered stem of the implant. The centralizer has four fins spaced around the exterior su
5650485 Non-oxidizing polymeric medical implant July 22, 1997
A medical implant made of polymeric material having an increased oxidation resistance is formed by a method including the steps of placing a resin powder in a sealed container. A substantial portion of the oxygen is removed from the sealed container by either a vacuum, an oxygen absorben
5628752 Ratcheting compression device May 13, 1997
A ratcheting compression device is provided which is very strong, which can be customized in length, which can be retightened periodically to maintain compression, which allows precise placement and alignment of bones with both grossly tuned compression and finely tuned compression, and
5607431 Prosthetic hip implantation method and apparatus March 4, 1997
A surgical instrument system for preparing the medullary canal of the femur for implanting a prosthetic femoral component includes a template to be used in determining osteotomy position from an x-ray. A gauge is provided to locate and mark this position on the anterior femur. A distal r
5601567 Method of sizing a femoral canal using a modular femoral trial hip replacement system February 11, 1997
A multi-piece trial femoral component kit for use in sizing a femoral cavity prior to implantation of a prosthetic femoral implant. The trial femoral component kit has at least two distal trial components of different size and two proximal trial components of different size and matin
5593452 Coated femoral stem prosthesis January 14, 1997
A femoral hip component for use in hip arthroplasty has a stem portion for contact with bone cement. The stem portion is formed from a biocompatible material having a surface finish of less than about four microinches. This surface is coated with a uniform layer of material selected from
5572899 Bending method using cooperating jaws having angled planar faces November 12, 1996
A device for bending a plate with an offset distance L and two angles simultaneously is provided, the device comprising special jaws which are replaceably attachable to the jaws of a pliers. A kit of a plurality of sets of bending jaws having a variety of offset lengths is provided.
5562673 Awls for sizing bone canals October 8, 1996
An awl suitable for both opening up a bone canal and for sizing that bone canal so as to obviate the use of a Charnley awl and the use of 4 to 5 distal reamers comprises (a) a tapered distal cutting head having a pointed first end, and a second end; and (b) a shaft attached to the se
5549706 Modular hip prosthesis August 27, 1996
A femoral hip prosthesis comprises a main member, a modular member and a means for connecting the two. The main member has a stem portion and a body portion which are adapted for insertion into the intramedullary canal. The body portion has lateral, posterior, and anterior sides adapted
5549705 Prosthesis with integral proximal spacer August 27, 1996
A prosthesis with an integral proximal spacer is described. The prosthesis has a base element with a textured surface to aid in adhesion to bone cement. The integral spacer has a generally tripod shape. A top circumferential portion at least partially surrounds the proximal end of th
5545460 Methods and apparatus for preparing and delivering bone cement August 13, 1996
Methods and apparatus are set forth for preparing and delivering bone cement from a powdered polymer component and a liquid monomer component by simultaneously injecting the powdered and liquid components, stored in separate component chambers, into an evacuated mixing chamber under the
5543471 Non-oxidizing polymeric medical implant August 6, 1996
A medical implant made of polymeric material having an increased oxidation resistance is formed by a method including the steps of placing a resin powder in a sealed container. A substantial portion of the oxygen is removed from the sealed container by either a vacuum, an oxygen absorben
5540695 Osteotomy cutting guide July 30, 1996
An osteotomy cutting guide is disclosed. The cutting guide utilities an angle cutting block which is removably and adjustably attached to a stabilizing base. Also utilized is a distal hole drill block which is removably and adjustably attached to the stabilizing base. The stabilizing
5534028 Hydrogel intervertebral disc nucleus with diminished lateral bulging July 9, 1996
A prosthetic nucleus for a vertebral disc is made of a hydrogel material. The hydrogel prosthetic nucleus has a shape generally conforming to the natural nucleus pulposus, and it exhibits diminished lateral bulging under high compressive loads. The hydrogel has a water content of from 30
5524695 Cast bone ingrowth surface June 11, 1996
An orthopaedic implant comprising a cast metal base member having an outer surface and an ingrowth surface comprising a plurality of attachment spacer elements of unequal lengths integrally cast with said base member and a metal attachment element integrally cast with said spacer element
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