| Patent Number |
Title Of Patent |
Date Issued |
| 5007931 |
Porous coated prosthesis |
April 16, 1991 |
| 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 encouraging bone ingrowth fixation is |
| 5002577 |
Variable position acetabular cup |
March 26, 1991 |
| A variable position acetabular cup assembly for replacing a natural hip socket includes a symmetrical base cup, a symmetrical polymer bearing, and a nonsymmetrical adapter ring situated between the base cup and the bearing. The base cup is designed to be affixed to the acetabulum to |
| 4999632 |
Analog to digital conversion with noise reduction |
March 12, 1991 |
| An analog-to-digital converter employs a capacitor circuit for integrating a sample of an input signal during a predetermined interval of time and, thereafter, the capacitor is discharged at a predetermined rate until the integration voltage is equal to that of a reference. The discharge |
| 4997932 |
Method and kit for purifying nucleic acids |
March 5, 1991 |
| The invention teaches a method and kit for purifying nucleic acid, such as DNA, from a sample, such as lysed cell or tissue sample. A sample is applied to an anionic exchange matrix column uniformly distributing the sample therein. The column bed is then washed with a weak ionic salt |
| 4986834 |
Load sharing femoral hip implant |
January 22, 1991 |
| A controlled stiffness elongated implant for use in the hip or other appropriate body joint. In the instance of the hip, a ball member fixed to the femur is rotatably engaged with a cup-shaped socket member fixed to the acetabulum of the pelvic bone. The ball member is mounted on one end |
| 4971918 |
Reducible indicator compositions containing pyrogallol derivatives |
November 20, 1990 |
| The invention relates to a composition useful in determining an analyte in a sample. The composition contains an indicator system which forms a detectable signal in the presence of said analyte, and which is not a coupling system, as well as a pyrogallol derivative. The pyrogallol de |
| 4966509 |
Power broach system |
October 30, 1990 |
| A transmission for converting rotary motion to simultaneous reciprocating motion of a tool in two mutually transverse directions. A driver is selectively attached to one end of an input shaft and the opposite end of the input shaft terminates at an eccentric cam. An output shaft extends |
| 4963814 |
Regulated bifurcated power supply |
October 16, 1990 |
| A regulated power supply employs two separate sources of power which are serially connected by a variable impedance element, such as a transistor, connected between the two power sources. Output voltage of the power supply is equal to the sum of the individual power supply voltages minus |
| 4959064 |
Dynamic tension bone screw |
September 25, 1990 |
| A dynamic bone fixation screw for rejoining fracture fragments of a bone to their approximate original mutual dispositions. It includes a threaded distal end member for threaded engagement with one of the bone fragments and a head member at a proximal end for engagement with another of t |
| 4955910 |
Fixation system for an elongated prosthesis |
September 11, 1990 |
| A fixation system is disclosed for an elongated prosthesis such as a prosthetic ligament. Opposed ends of the ligament are attached to spaced apart bones such that the connections are external of the bones so as to permit a maximum of relative movement between the ligament and the bones |
| 4952213 |
Tibial cutting guide |
August 28, 1990 |
| An apparatus for placing a bone cutting saw cutting guide adjacent a proximal surface of a human tibia bone having an elongated rod inserted into the tibia for clampingly supporting a rotating bar on the central longitudinal axis of the tibia bone. The bar being extended from the rod |
| 4950270 |
Cannulated self-tapping bone screw |
August 21, 1990 |
| A fluted and cannulated self-tapping bone screw which can be guided into proper position using a guide pin that slidably fits in the cannula of the bone screw. The flutes have cutting edges centered on axial centerline of the cannula. |
| 4947502 |
Method of making a dynamic tension bone screw |
August 14, 1990 |
| A dynamic bone fixation screw for rejoining fracture fragments of a bone to their approximate original mutual dispostion. It includes a threaded distal end member for threaded engagment with one of the bone fragments and a head member at a proximal end for engagement with another of the |
| 4936844 |
Bone fixation system |
June 26, 1990 |
| A fixation system for drawing together into engaging relationship mutually opposed fracture surfaces of a pair of bone fragments at a fracture site. An elongated blade with a sharpened leading end is driven into a first bone fragment generally parallel to and spaced from a fracture surfa |
| 4929545 |
Method and reagent for determination of an analyte via enzymatic means using a ferricyanide/ferr |
May 29, 1990 |
| A composition useful in determining analytes, such as glucose or cholesterol, is disclosed. The composition contains an enzyme which specifically reacts with the analyte to be determined, a soluble ferricyanide compound which is reducible to form a ferrocyanide, a soluble ferric comp |
| 4927422 |
Elbow arthroplasty instrumentation and surgical procedure |
May 22, 1990 |
| A method and apparatus for modifying the distal end of the humerus deformed by injury or disease in preparation for fixation of an elbow joint replacement. A through hole is first formed in the superior aspect of the olecranon fossa communicating with the humeral canal. A stem member whi |
| 4923513 |
Titanium alloy treatment process and resulting article |
May 8, 1990 |
| A carefully controlled amount of hydrogen is diffused into titanium or its alloys at an elevated temperature above the transformation temperature. After the elevated temperature is maintained for an approprate duration of time, eutectoid transformation is performed in an inert atmosphere |
| 4917530 |
Structural joint |
April 17, 1990 |
| A structural joint which may be for orthopedic use is effective to simultaneously resist bending and torsional loading. It includes a female member formed with a cone shaped bore and a mouth defining entry into the bore. A male member matingly engageable with the female member has a |
| 4904265 |
Cementless acetabular implant |
February 27, 1990 |
| A cementless acetabular implant intended for use in instances of a bony defect in the pelvis at the acetabular cavity requiring substantial rebuilding of the acetabulum by use of bone graft material. It includes a substantially rigid metallic hemispherically shaped support cup for co |
| 4896663 |
Self centering femoral drill jig |
January 30, 1990 |
| A hand-held drill jig is utilized to locate and maintain a central axis through a head and an associated neck of a femur enabling a blind hole to be drilled into the femoral head oriented to the central axis. The drill jig is adjustable to accommodate a broad range of sizes of femurs and |
| 4871258 |
Color test meter |
October 3, 1989 |
| A colorimeter comprises a case, a liquid crystal display (LCD) mounted on the case, a color chart provided on the case to permit holding of a specimen to be compared in close proximity to the color chart, and switches for indicating which color on the color chart the color of the spe |
| 4834081 |
Tool for removing modular joint prosthesis |
May 30, 1989 |
| A tool for removal of a joint prosthesis intended for implantation in a body. The prosthesis includes a component adapted to be fixed to a long bone having an intramedullary canal and further includes an elongated male stem having a uniformly tapered outer surface. In order to accommodat |
| 4822368 |
Sugical method of attaching enclosure member for prosthetic joint |
April 18, 1989 |
| A flexible enclosure is applied to a prosthetic joint to isolate wear particles which are produced by interengagement between the components of the joint. The enclosure overlies the joint, and is sealingly affixed to the respective joint components proximate to its ends. The enclosure ma |
| 4822366 |
Modular knee prosthesis |
April 18, 1989 |
| A modular knee prosthesis assembly for the replacement of a portion of the knee joint is provided. The assembly has a femoral component that is formed to include first bearing surfaces and first means for demountably receiving an optional femoral stem member. The assembly also has a tibi |
| 4808186 |
Controlled stiffness femoral hip implant |
February 28, 1989 |
| A controlled stiffness elongated implant for use in the hip or other appropriate body joint. In the instance of the hip, a ball member fixed to the femur is rotatably engaged with a cup-shaped socket member fixed to the acetabulum of the pelvic bone. The ball member is mounted on one end |
| 4805607 |
Modular intramedullary nail system |
February 21, 1989 |
| A modular intramedullary nail system for the repair of long bone fractures. The system comprises several base nails of different lengths and diameters, each of which may be anatomically curved, and several extension members of different lengths and diameters. By selection of various |
| 4797256 |
Registration device for blood test strips |
January 10, 1989 |
| A ring-shaped registration device for receiving and holding an activated test strip having a reagent area adapted to receive a blood sample. The registration device is slidably received on the outer peripheral surface of a cylindrical vial on which markings to indicate a range of possibl |
| 4786063 |
Bone vise |
November 22, 1988 |
| A bone vise for holding a bone or bone fragment immobile during surgery to enable a surgeon to perform desired sculpting or other operations thereon. The vise includes a planar base member with an integral threaded post upstanding from its central portion and a platform threadedly receiv |
| 4765344 |
Blood transfer assembly |
August 23, 1988 |
| An apparatus for forming a blood droplet of a controlled, generally uniform size from a finger which has been pricked to draw blood includes a "funnel" member providing an upper edge across which the finger is drawn to deposit blood on a surface down which the blood flows under the i |
| 4755185 |
Prosthetic joint |
July 5, 1988 |
| A three-component prosthetic joint comprising a first bone-attachable component having a planar articular surface and a second bone-attachable component having an arcuate articular surface and a substantially congruent bearing component held therebetween, avoids extrusion of the bear |
| 4710075 |
Adjustable drill gauge |
December 1, 1987 |
| A drill stop apparatus for use with an elongated drill bit is provided. The drill bit has a drilling end that is used to drill a hole of a specified, predetermined depth. The bit also has a plurality of circumferentially extending, axially spaced grooves formed on its outer surface. The |
| 4687443 |
Submergible post-type dental implant system and method of using same |
August 18, 1987 |
| A submergible, post-type dental implant system for anchoring an artificial crown or bridge in a row of teeth or edentulous or partially edentulous area includes a root structure which is surgically implanted transgingivally and into the bone therebeneath, an implant head which is com |
| 4558112 |
Low oiling gel filled articles, siloxane gels and liquids therefor, and methods for producing sa |
December 10, 1985 |
| A low oiling gel filled article comprising a polydiorganosiloxane gel contained within a polysiloxane rubber envelope. The gel is characterized as being the addition product of a first prepolymer having silicon-bonded additional radicals on a terminal silicon atom, and a second prepolyme |
| 4328185 |
Automated chemical testing apparatus |
May 4, 1982 |
| An automated chemical testing apparatus which includes a continuous flow front end portion and a discrete flow back end portion. Also provided is a collecting means for separately collecting these sample segments and the intersample segments, means for analyzing these sample segments, an |
