Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 5616144 | Osteosynthesis plate system An osteosynthesis plate system is particularly well adapted to securely fuse adjacent cervical vertebrae. The plates are for mounting upon the anterior or posterior surfaces of the vertebrae. Plates for mounting on the anterior vertebral surfaces have a c... | 04/01/1997 |
| 5549612 | Osteosynthesis plate system An osteosynthesis plate system is particularly well adapted to securely fuse adjacent cervical vertebrae. The plates are adapted for mounting upon the anterior or posterior surfaces of the vertebrae. Plates for mounting on the anterior vertebral surfaces ... | 08/27/1996 |
| 5417690 | Surgical cable A multistrand surgical cerclage cable having a multistrand leader is disclosed. The cable is very flexible and the leader is more malleable and stiffer than the cable allowing the leader to be shaped to be fed or directed around and between tissue in the ... | 05/23/1995 |
| 5380333 | Surgical drill A surgical drill assembly is provided having a clutch mechanism that requires a sufficient axial load on cutting surfaces of the drill to enable rotation of the drill. Rotation of the drill ceases almost immediately upon the axial load falling below the p... | 01/10/1995 |
| 5375481 | Multi-position ratchet mechanism A multi-position ratchet mechanism for holding a surgical retractor blade which permits a retractor blade to be rotated into the wound and retracted at the same time to duplicate the natural "toe-in" method of retraction achieved with the hand. The ratche... | 12/27/1994 |
| 5330480 | Surgical drill A surgical drill assembly is provided having a clutch mechanism that requires a sufficient axial load on cutting surfaces of the drill to enable rotation of the drill. Rotation of the drill ceases almost immediately upon the axial load falling below the p... | 07/19/1994 |
| 5318509 | Head clamp safety locking pin A surgical head clamp having two arms, one with a single head engaging pin and the second with two head engaging pins mounted on a bracket. The bracket is capable of being rotated to reposition the head. The operating knob which releases the bracket to al... | 06/07/1994 |
| 5284129 | Swivel ring surgical retractor A swivel ring surgical retractor in a generally circular form is disclosed. The retractor has a fixed portion which is attached to the operating table or other support and a portion which can swivel in relationship to the fixed portion. The swivel portion... | 02/08/1994 |
| 5254079 | Head clamp A head clamp which includes a frame with two arms, a bracket on one of the arms capable of rotation to adjust the position of head engaging pins affixed at the ends of the arms. The bracket is rotatable but held in position by a plurality of index pins fi... | 10/19/1993 |
| 5214815 | Surgical headrest with removable foam pad A surgical headrest which comprises two arcuate base segments and a pad affixed to each of the base segments. Each of the pads has a cavity in the surface which is affixed to the base in a shape to accept the base segment, thereby securing the pad to the ... | 06/01/1993 |
| 5207692 | Surgical clip applier with reciprocating clip sleeve and dual ratchet mechanism A surgical clip applier includes a pair of pivotal housing sections on which are provided a pair of clip actuating jaws. An elongated clip sleeve which receives a plurality of surgical clips arranged front to back in a row is mounted for longitudinal reci... | 05/04/1993 |
| 5197965 | Skull clamp pin assembly A pin assembly for use in a skull clamp having a cylindrical non-metallic housing and a metallic rigid pin with a conical point fitted in the non-metallic housing. The non-metallic housing has fingers extending from a cavity in the surface of the housing ... | 03/30/1993 |
| 5104397 | Multi-position latching mechanism for forceps A latching mechanism for forceps including first latch portion on one forcep handle and a second latch portion on the other forceps handle and a bias spring for placing the handles, and thus the jaws, in a first predetermined spacing. The first latch port... | 04/14/1992 |
| 5067477 | Low wear bearing for a surgical retractor A low wear bearing system for a surgical retractor including usually four bearings recessed in the retractor housing, each bearing having a generally rectangular projection extending into a corresponding slot in the rack of the rack and pinion type retrac... | 11/26/1991 |
| 5040676 | Container and dispenser for an aneurysm clip A container and dispenser for an aneurysm clip adapted to receive many different sizes of aneurysm clips and to hold them in a position which facilitates easy removal of the clip from the container. The holder has a generally rectangular body, a detent pr... | 08/20/1991 |
| 4990148 | Thin footplate rongeur A rongeur with special features applied to the footplate area to prevent the intersection of stress fields to allow the rongeur to be reduced in size and mass without materially reducing the strength of the rongeur. A transverse groove is used at the inte... | 02/05/1991 |
| 4961743 | Torsion spring A torsion spring with a coil portion having extensions extending from the ends of the coil for receiving forces for torquing the spring. The spring provides a more balanced stress distribution about the coil which in the preferred embodiment include a reg... | 10/09/1990 |
| 4938353 | Container and dispenser for aneurysm clips A container and dispenser for aneurysm clips is shown which allows the aneurysm clips to be magnified as they are displayed to the user to facilitate easy removal of the clip from the container. The container includes a base preferably made of silicone or... | 07/03/1990 |
| 4850955 | Body fluid transfer device A biomedical implantable shunt is provided having an enlarged generally circular pump body and a perforated distal and proximal catheter attached to said body. The catheters are intended to have excess length so they can be cut to proper length as necessa... | 07/25/1989 |
| 4830001 | Assembly sleeve for cranial drill A cranial perforator with an internal clutch which is engaged when the drill is placed against a bone surface for drilling and which will automatically release when the drill penetrates the skull. The components of the drill are held together by a plastic... | 05/16/1989 |
| 4827930 | Reinforcing closer for aneurysm clip A device for closing jaws of an aneurysm clip. The device includes a central spring portion. Body members are mounted on the central spring portion to be urged toward a closed position by the central spring portion. Heads carried by the body members are p... | 05/09/1989 |
| 4796625 | Aneurysm clip A one-piece aneurysm clip having an elongated flat ribbon body. The body includes a central helical portion joining first connecting portions, second connecting portions extending from the first connecting portions transversely of the first connecting por... | 01/10/1989 |
| 4693254 | Transcutaneous nerve stimulation device using a common controller for pulse production and parameter display A transcutaneous nerve stimulation device is provided using a common controller for both output pulse production and treatment parameter display. The common controller, which preferentially takes the form of a programmed microprocessor, is connected by si... | 09/15/1987 |
| 4646734 | Laser instrument A surgical tool for intercepting laser energy after it has energized a target site but before it energizes adjacent tissue. The instrument includes substrate of material having a high thermal conductivity for transmitting laser energy away from the surgic... | 03/03/1987 |
| 4610242 | Endoscope insertion cannula assembly An endoscope insertion cannula assembly including an endoscope housing and axially projecting body having an endoscope tip. An adapter is affixed about the endoscope housing, and a guide is affixed about the adapter. A spring and a seal are also affixed a... | 09/09/1986 |
| 4604089 | Pressure regulated irrigation system for arthroscopy A pressure regulated system for an irrigation system including a reservoir of irrigation fluid, a pump, catheters for providing access to and egress from the irrigation site and a pressure regulation circuit, all connected in series with one another. The ... | 08/05/1986 |
| 4582063 | Transcutaneous nerve stimulation device with sentinel A sentinel system is provided for a transcutaneous nerve stimulation device in which a sentinel pulse of known characteristics is produced at the device output prior to the production of a stimulation pulse. The output response is measured during the time... | 04/15/1986 |
| 4580558 | Laser instrument A surgical tool for intercepting laser energy after it has energized a target site but before it energizes adjacent tissue. The instrument includes substrate of material having a high thermal conductivity for transmitting laser energy away from the surgic... | 04/08/1986 |
| 4576589 | Trocar A trocar apparatus and method for introducing a drainage catheter into a drainage area of the body. The trocar includes a hollow cannula and a rod. The rod has a closed distal end and is longer than the cannula so that it can slide into the cannula and, w... | 03/18/1986 |
| 4550715 | Endoscope insertion cannula assembly A cannula including a guide and a cam housing rotatably supported about the guide into which a trocar obtuator and an endoscopy instrument may be inserted. A tapered proximal surface of the guide and a cooperating pin on the instrument rotate the instrume... | 11/05/1985 |
| 4530577 | Mounting assembly for synchronized adjustment of multiple microscope housing A mounting assembly for twin microscope housings to permit synchronized tilting of the microscopes including a central spindle whose outside surface is threaded to accommodate an annular collar whose inside surface has corresponding threads. A fixed brack... | 07/23/1985 |
| 4520818 | High dielectric output circuit for electrosurgical power source A transformer circuit including a primary coil with first and second voltage divider segments arranged in phase with equal inductances and a plurality of taps on the second segment. A switch is used to selectably ground one of the taps for varying the vol... | 06/04/1985 |
| 4518223 | Automatic magnification changer for a surgical microscope A solenoid driven magnification changer shaft for a microscope with positive index stops. The solenoid shaft that both translates and rotates when the solenoid is activated. A coupler couples the solenoid shaft to the magnification changer shaft so as to ... | 05/21/1985 |
| 4500832 | Electrical transformer A coaxially aligned transformer having a secondary coil wrapped with a high dielectric insulating material wrapped on a support member and slidably supported between a lock block and a support base to permit the transformer electrical parameters to be adj... | 02/19/1985 |
| 4494653 | Container for surgical patties A container for a plurality of surgical patties having a recess for receiving a number of surgical patties and a plurality of count slots for receiving locating strings attached to the patties so that each pattie may be readily counted by surgical personn... | 01/22/1985 |
| 4467791 | Surgical retractor holder A quick-release ratcheting holder for a surgical retractor which includes a spring detent to keep the holder from coming off the ring member when the retractor is relaxed.... | 08/28/1984 |
| 4456010 | Cranial drill A completely disposable, permanently assembled drill for perforating bone structures, which includes a generally annular drill body. A primary drill member is slidably and rotatably received in the distal end of the drill body. A driver is slidably and ro... | 06/26/1984 |
| 4424724 | Multi-position ratchet mechanism A multi-position ratchet mechanism for holding a surgical retractor blade which permits a retractor blade to be rotated into the wound and retracted at the same time to duplicate the natural "toe-in" method of retraction achieved with the hand. The ratche... | 01/10/1984 |
| 4421108 | Surgical retractor holder A quick-release ratcheting holder for a surgical retractor which includes a spring detent to keep the holder from coming off the ring member when the retractor is relaxed.... | 12/20/1983 |
| 4362161 | Cranial drill A completely disposable, permanently assembled drill for perforating bone structures, which includes a generally annular drill body. A primary drill member is slidably and rotatably received in the distal end of the drill body. A driver is slidably and ro... | 12/07/1982 |
