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519 results about "Mechanical advantage" patented technology
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Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. The device preserves the input power and simply trades off forces against movement to obtain a desired amplification in the output force. The model for this is the law of the lever. Machine components designed to manage forces and movement in this way are called mechanisms. An ideal mechanism transmits power without adding to or subtracting from it. This means the ideal mechanism does not include a power source, is frictionless, and is constructed from rigid bodies that do not deflect or wear. The performance of a real system relative to this ideal is expressed in terms of efficiency factors that take into account departures from the ideal.
Rotary hydraulic pump actuated multi-stroke surgical instrument
A surgical instrument (e.g., endocutter, grasper, cutter, staplers, clip applier, access device, drug / gene therapy delivery device, and energy device using ultrasound, RF, laser, etc.) may benefit from having a plurality of hydraulically actuated subsystems (e.g., severing, stapling, articulation, locking / unlocking, lockout enabling / disabling, grasping, etc.) supplied with hydraulic power from a trigger actuated rotary pump (e.g., lobe pump, rotary gear pump, internal rotating gear pump, flexible vane rotor pump, rotary vane pump). Thereby, an available amount of mechanical advantage available at a firing trigger may be optimally distributed to various end effector components, perhaps sequenced by an electroactive polymer or piezoelelectrically actuated function switch block.
Owner:ETHICON ENDO SURGERY INC
Surgical stapling instrument incorporating an uneven multistroke firing mechanism having a rotary transmission
A surgical stapling and severing instrument particularly suited to endoscopic procedures incorporates a handle that produces separate closing and firing motions to actuate an end effector. In particular, the handle produces multiple firing strokes in order to reduce the required amount of force required to fire (i.e., staple and sever) the end effector. Varying the center of rotation, circumferential length, and depth of cam lobes in a cam disk that interacts with the firing trigger via a drive wedge allows optimization. In particular, mechanical advantages during specific firing strokes mitigates increased force to fire at the end effector, enabling a more uniform tactile force at the firing trigger.
Owner:CILAG GMBH INT
Laparoscopic surgical instrument
A laparoscopic surgical instrument configured to be ergonomic and anthropometrically correct, the laparoscopic surgical instrument comprising: (a) an ergonomic handle configured to orient a hand of a surgeon in a functional position, the handle comprising a handle grip; (b) an actuating mechanism actuatable by a finger and supported by the handle, the actuating mechanism comprising an actuator shaft and a gearing assembly operable to displace the actuator shaft with a mechanical advantage upon actuation of a trigger by the surgeon; (c) a locking mechanism configured to lock the actuating mechanism in one of a plurality of positions, the locking mechanism comprising a release located in an anthropometrically correct position; and (d) a working shaft having a proximal end coupled to and operable with the actuator shaft, the working shaft having an elongate configuration and a distal working end configured to couple a surgical tool to be manipulated by the surgeon via the handle and the actuating mechanism to perform a surgical function.
Owner:SHORTI RAMI +1
Injection device with secondary reservoir
A method and apparatus for injecting fluid into areas having high density tissue that creates a high backpressure resistance on the injection device is disclosed. The high backpressure resistance is overcome through a mechanical advantage achieved by using a secondary reservoir having a cross-sectional area smaller than the cross-sectional area of a primary reservoir. Exemplary injection device reservoir housings may comprise a primary reservoir, a secondary reservoir, a check valve, a septum penetrating cannula, travel limits, a pen needle connecting portion, sliding seal guide ribs, a sliding seal, a pen needle assembly, a needle stop, and a patient needle.
Owner:EMBECTA CORP
Surgical stapling instrument incorporating an uneven multistroke firing mechanism having a rotary transmission
A surgical stapling and severing instrument particularly suited to endoscopic procedures incorporates a handle that produces separate closing and firing motions to actuate an end effector. In particular, the handle produces multiple firing strokes in order to reduce the required amount of force required to fire (i.e., staple and sever) the end effector. Varying the center of rotation, circumferential length, and depth of cam lobes in a cam disk that interacts with the firing trigger via a drive wedge allows optimization. In particular, mechanical advantages during specific firing strokes mitigates increased force to fire at the end effector, enabling a more uniform tactile force at the firing trigger.
Owner:CILAG GMBH INT
Medication dispensing apparatus with triple screw threads for mechanical advantage
A medication dispensing apparatus that provides a mechanical advantage. During dose preparing, a nut rotating element (410) and a screw element (368) are in a first axial arrangement such that a screwing motion of the nut rotating element and screw element relative to the apparatus housing that moves the elements a first axial distance from a home position screws a nut (364) along a drive member threaded shaft (362) a second axial distance different than the first axial distance. During dose dispensing, the nut rotating element and the screw element are in a second axial arrangement, whereby a screwing motion of the screw element relative to the housing back toward the home position advances a plunger (366) in the distal direction to axially advance the nut and thereby the drive member and a fluid container piston to dispense medicine.
Owner:ELI LILLY & CO
Ratcheting mechanical driver for cannulated surgical systems
InactiveUS20090254094A1Control lengthPermit useProsthesisOsteosynthesis devicesCouplingMechanical advantage
A device for rotatably driving a cannulated tool along a guide wire. In one aspect, the device includes a coupling assembly for receiving the tool and guide wire as well as a ratchet mechanism permitting selective rotation between the device and the tool. The device further includes an elongate gripping portion extending transversely to the coupling assembly to provide a levered mechanical advantage while positioning the gripping portion out of the path of the guide wire. In another aspect, the device includes a handle having a through bore shorter than a predetermined length of a connection assembly through bore so that only a short portion of the guide wire is covered by the device. A method of driving a cannulated tool along a guide wire is also provided that includes rotating a gripping portion of a handle assembly about the tool in an arcuate path spaced from the tool.
Owner:PIONEER SURGICAL TECH INC
Hand-held instruments that access interior body regions
InactiveUS7081122B1Simplifies interior access protocolReliable transmissionInfusion syringesDiagnosticsReliable transmissionHand held
A composite instrument is provided comprising a first functional instrument and a second functional instrument when the first functional instrument is coupled with the second functional instrument. A composite handle for the composite instrument is provided comprising a first handle and a second handle when the first handle is coupled with the second handle. The handle makes possible the reliable transmission, with increased mechanical advantage, of both torsional and longitudinal loads by the physician to the composite instrument, while resisting relative rotation between the first and second instruments. The instrument is sterilization sensitive, changing physical appearance after sterilization.
Owner:ORTHOPHOENIX
Rotary hydraulic pump actuated multi-stroke surgical instrument
A surgical instrument (e.g., endocutter, grasper, cutter, staplers, clip applier, access device, drug / gene therapy delivery device, and energy device using ultrasound, RF, laser, etc.) may benefit from having a plurality of hydraulically actuated subsystems (e.g., severing, stapling, articulation, locking / unlocking, lockout enabling / disabling, grasping, etc.) supplied with hydraulic power from a trigger actuated rotary pump (e.g., lobe pump, rotary gear pump, internal rotating gear pump, flexible vane rotor pump, rotary vane pump). Thereby, an available amount of mechanical advantage available at a firing trigger may be optimally distributed to various end effector components, perhaps sequenced by an electroactive polymer or piezoelectrically actuated function switch block.
Owner:ETHICON ENDO SURGERY INC
Medication dispensing apparatus with gear set for mechanical advantage
InactiveUS20050165363A1Mechanically efficientEasy plungingAmpoule syringesMedical devicesGear wheelPinion
A medication dispensing apparatus having a gear set (64) to provide a mechanical advantage to the plunging of the apparatus plunger (66). The gear set (64) has a first pinion (114) in meshed engagement with a rack of the plunger (102), and a second pinion (126) in meshed engagement with a rack of a drive member (80) of the apparatus. The gear set (64) operatively interconnects the plunger (66) and the drive member (62) such that after the plunger (66) is moved relative to the housing in a proximal direction to prepare the apparatus for injection, the plunger (66), when manually pushed back toward the housing, causes the drive member (62) to advance in a distal direction to force medication through an outlet, typically provided with an injection needle, at the distal end of the apparatus.
Owner:ELI LILLY & CO
Medication dispensing apparatus with gear set for mechanical advantage
InactiveUS7678084B2Mechanically efficientEasy plungingAmpoule syringesMedical devicesGear wheelEngineering
A medication dispensing apparatus having a gear set (64) to provide a mechanical advantage to the plunging of the apparatus plunger (66). The gear set (64) has a first pinion (114) in meshed engagement with a rack of the plunger (102), and a second pinion (126) in meshed engagement with a rack of a drive member (80) of the apparatus. The gear set (64) operatively interconnects the plunger (66) and the drive member (62) such that after the plunger (66) is moved relative to the housing in a proximal direction to prepare the apparatus for injection, the plunger (66), when manually pushed back toward the housing, causes the drive member (62) to advance in a distal direction to force medication through an outlet, typically provided with an injection needle, at the distal end of the apparatus.
Owner:ELI LILLY & CO
Custom fitted orthotic device
InactiveUS6213968B1Patient compliance is goodEasily and rapidly adjustedOrthopedic corsetsProtective garmentOrthotic deviceMechanical advantage
An orthotic device is provided, including an orthosis body adapted to be wrapped around the torso of a wearer of the device, the orthosis body having at least two segments in juxtaposed relationship. Means are provided at free end portions of the at least two segments to releasably secure the free end portions to one another. At least two cables are provided, each cable operatively connected to the at least two segments. At least two sets of pulleys are mounted on the at least two segments with each cable operatively connected to the at least two segments running through a pulley on each of the at least two segments in alteration, shortening of each cable pulling the at least two segments together and tightening the orthotic device with the aid of a mechanical advantage dependent upon the number of pulleys mounted on each of the at least two segments.
Owner:BIO CYBERNETICS INT INC
Delivery mechanism for implantable stent
A delivery mechanism for an implantable stent which provides a high mechanical advantage to the surgeon and convenient operation so as to facilitate smooth withdrawal of an outer catheter sheath following placement of the stent in the desired location within the patient's vessel. Preferred embodiments include a moving rail actuated by a V-shaped lever, a hydraulic actuator, a rack and pinion drive, and a power screw system. The delivery mechanism has a movable member that is attached to the outer catheter sheath so that actuating the mechanism results in an incremental movement of the moveable member, which in turn results in an incremental movement of the outer catheter sheath. Once the outer catheter sheath is retracted from the stent, the stent is deployed into the patient's vessel and the remaining parts of the mechanism, including an inner tube, an atraumatic tip, and a stabilizing element, are easily removed.
Owner:BARD PERIPHERAL VASCULAR
Injection device with secondary reservoir
A method and apparatus for injecting fluid into areas having high density tissue that creates a high backpressure resistance on the injection device is disclosed. The high backpressure resistance is overcome through a mechanical advantage achieved by using a secondary reservoir having a cross-sectional area smaller than the cross-sectional area of a primary reservoir. Exemplary injection device reservoir housings may comprise a primary reservoir, a secondary reservoir, a check valve, a septum penetrating cannula, travel limits, a pen needle connecting portion, sliding seal guide ribs, a sliding seal, a pen needle assembly, a needle stop, and a patient needle.
Owner:EMBECTA CORP
Fluid collecting device
ActiveUS20050155757A1Increased mechanical advantageEnhanced advantageDrilling rodsConstructionsActuatorMechanical advantage
An adjustable fluid collecting device with two shells pivotally movable relative to each other wherein the fluid collecting device is movable between an open position in which the shells are distanced from each other and a closed position in which the shells touch, an actuator and a lever assembly wherein the operation of the actuator results in equal but opposite movement of the shells and the mechanical advantage increases as the shells move toward the closed position. A rigid frame which substantially surrounds the two shells, actuator and lever assembly is provided. Optionally, the apparatus can be equipped with an integral pipe spinner.
Owner:SUB DRILL SUPPLY
Laparoscopic surgical instrument
A laparoscopic surgical instrument configured to be ergonomic and anthropometrically correct, the laparoscopic surgical instrument comprising: (a) an ergonomic handle configured to orient a hand of a surgeon in a functional position, the handle comprising a handle grip; (b) an actuating mechanism actuatable by a finger and supported by the handle, the actuating mechanism comprising an actuator shaft and a gearing assembly operable to displace the actuator shaft with a mechanical advantage upon actuation of a trigger by the surgeon; (c) a locking mechanism configured to lock the actuating mechanism in one of a plurality of positions, the locking mechanism comprising a release located in an anthropometrically correct position; and (d) a working shaft having a proximal end coupled to and operable with the actuator shaft, the working shaft having an elongate configuration and a distal working end configured to couple a surgical tool to be manipulated by the surgeon via the handle and the actuating mechanism to perform a surgical function.
Owner:SHORTI RAMI +1
Medication dispensing apparatus with triple screw threads for mechanical advantage
ActiveUS20060206057A1Easy plungingHigh mechanical advantageAmpoule syringesMedical devicesEngineeringAxial distance
A medication dispensing apparatus that provides a mechanical advantage. During dose preparing, a nut rotating element (410) and a screw element (368) are in a first axial arrangement such that a screwing motion of the nut rotating element and screw element relative to the apparatus housing that moves the elements a first axial distance from a home position screws a nut (364) along a drive member threaded shaft (362) a second axial distance different than the first axial distance. During dose dispensing, the nut rotating element and the screw element are in a second axial arrangement, whereby a screwing motion of the screw element relative to the housing back toward the home position advances a plunger (366) in the distal direction to axially advance the nut and thereby the drive member and a fluid container piston to dispense medicine.
Owner:ELI LILLY & CO
Low-mounted powered opening system and control mechanism
A power-operated system for actuating the rear doors or liftgates of motor vehicles is disclosed. The system includes an articulating strut mounted between a vehicle frame and the rear door. A motor assembly is operatively coupled between the articulating strut and the vehicle frame for changing the angular orientation and, in turn, mechanical advantage provided by the articulating strut. The articulating strut is moved into angular orientations of greater mechanical advantage in order to effect opening of the rear door and lesser mechanical advantage to effect closing of the rear door.
Owner:LITENS AUTOMOTIVE INC
Delivery system with variable delivery rate for deploying a medical device
InactiveUS20100036472A1Less torqueReduce the amount requiredStentsBlood vesselsStatic frictionEngineering
A delivery system utilizes a handle assembly including an actuating mechanism capable of initially providing sufficient mechanical advantage to overcome static friction when initiating deployment of the medical device. The actuating mechanism includes components which help to increase the speed of deployment as the physician continues to manipulate the actuating mechanism.
Owner:ABBOTT CARDIOVASCULAR
Rotary handle for controlled sequential deployment device
ActiveUS20070255390A1Restrict distancePrevent movementStentsCatheterStent graftingMechanical advantage
A stent graft introducer actuation assembly (1) having a fixed handle (3) and at least one sliding handle (5, 7), the sliding handle or handles telescoping within the fixed handle, and a winch arrangement (9) to retract the sliding handle into the fixed handle. There may be provided arrangements to give a mechanical advantage to the winch arrangement.
Owner:COOK MEDICAL TECH LLC +1
Manual roller shade having clutch mechanism, chain guide and universal mounting
A manual roller shade includes a clutch mechanism having a gear train transferring rotation of an input sprocket to rotation of an output member engaging a roller tube. The gear train includes a sun gear, planet gears supported by a carrier and engaging the sun gear, and a ring gear engaging the planet gears. According to one embodiment, the carrier does not rotate. The ratio between the diameters of the input sprocket and the roller tube is selected to offset mechanical advantage of the gear train to provide an effective gear train ratio of approximately 2:1. A drive chain guide system includes spaced guide wheels controlling where a drive chain is suspended from the manual shade. A roller shade mounting system includes a bracket receiving either an input assembly of the manual roller shade or a motor of a motorized roller shade to facilitate conversion.
Owner:LUTRON TECH CO LLC
Orientation preserving angular swivel joint
InactiveUS6871563B2Light and compactEasy to controlProgramme-controlled manipulatorJointsRobotic armGear wheel
An orientation preserving angular swivel joint suitable for mechanical robotic arms and in particular snake robots, the joint comprising two members and an angular bevel gear train that connects the two members of the joint. The gear train allows an actuator to be positioned along the axis of the joint while transferring forces to the periphery of the mechanism, thus creating a high mechanical advantage proportional to the radius of the robot. The gear train is capable of transferring rotational motion between the two members with a constant ratio. Relative rotation between two bays of the joint does not take place, thereby preventing electrical wires running through the body of the snake from being twisted, and thus avoiding failure.
Owner:CHOSET HOWIE +1
Device for manually controlling delivery rate of a hypodermic syringe and syringe having same
ActiveUS7611495B1Reduce manufacturing costAmpoule syringesMedical devicesHand heldMechanical advantage
An injection retarder for mechanically / manually reducing the rate of delivery of a hand-held hypodermic syringe and a syringe having same are provided. The injection retarder and syringe include means for selectively slowing a rate of progress of the plunger into the barrel. For example, a thumb tip rest is provided against which the thumb may be braced, thereby providing additional mechanical advantage and much finer manual control of the rate of injection. Alternatively, a set of teeth and an opposing mating tooth or pawl are provided which increase friction and slow the progress of the plunger.
Owner:GIANTURCO MICHAEL C
Jumper sleeve for connecting and disconnecting male f connector to and from female f connector
ActiveUS20100233902A1Firmly connectedElectrically conductive connectionsTwo pole connectionsEngineeringMechanical advantage
A jumper sleeve for connecting and disconnecting a male F connector to and from a female F connector includes a wrench portion and a grip portion. The wrench portion has a leading end, a trailing end, and a hollow main body located between the leading end and the trailing end. The main body of the wrench portion internally has a hexagonally shaped portion corresponding to a shaped outer surface of a rotatable connecting ring of the male F connector. The grip portion has a rear end and a front end connected to the trailing end of the wrench portion, and has a plurality of circumferentially spaced externally convex sections, each of which has a radially inward key formed near the rear end thereof. The jumper sleeve provides greater mechanical advantage to produce sufficient torsion force, enabling easy installation and removal of the male F connector.
Owner:PHOENIX COMM TECH INTIOAL
Orthotic trauma device
InactiveUS6602214B2Stabilizes broken boneReduce relative motionNon-surgical orthopedic devicesKnee orthosisEngineering
An orthotic trauma device is provided including an elongated orthosis body adapted to be wrapped around a portion of a body, the orthosis body being formed of a pliant material be easily cut with cloth-cutting scissors; a detachable fastening device provided at distal ends of the elongated orthosis body to releasably secure the distal ends to one another; and means for adjusting the tightness of the orthosis body operatively associated with the detachable fastening device. A pulley system for use in an orthotic device includes a pair of pulley banks arranged in a first and second of the pair of pulley banks detachably connected to a first distal end and a second distal end of the orthosis body respectively, a first bank of which is adapted to be detachably disposed on a first distal end of an elongated orthosis body and a second bank of pulleys adapted to be detachably disposed on a second distal end of the elongated orthosis body; and a cable interconnecting the two pulley banks and running through a pulley on each of the pulley banks in alteration, such that shortening of the cable pulls the pulley banks together and tightens the orthotic device with the aid of a mechanical advantage.
Owner:PYNG MEDICAL CORP
Orthotic trauma device
InactiveUS20020148461A1Stabilizes broken boneBlood lossNon-surgical orthopedic devicesKnee orthosisBlock and tackle
An orthotic trauma device is provided including an elongated orthosis body adapted to be wrapped around a portion of a body of a wearer of the device, the orthosis body being formed of a pliant material which is adapted to be easily cut with cloth-cutting scissors; a detachable fastening device provided at distal ends of the elongated orthosis body to releasably secure the distal ends to one another; and means for adjusting the tightness of the orthosis body operatively associated with the detachable fastening device. A pulley system for use in an orthotic device is also provided including a pair of pulley banks arranged in juxtaposed relationship, a first bank of which is adapted to be detachably disposed on a first distal end of an elongated orthosis body and a second bank of pulleys adapted to be detachably disposed on a second distal end of the elongated orthosis body; and a cable interconnecting the two pulley banks and running through a pulley on each of the pulley banks in alteration, such that shortening of the cable pulling the pulley banks together and tightening the orthotic device with the aid of a mechanical advantage dependent upon the number of pulleys mounted on each of the pulley banks.
Owner:PYNG MEDICAL CORP
Portable catapult launcher for small aircraft
An apparatus for launching an aircraft having a multiplicity of interconnected elongated tracks of rigid material forming a track system and wherein each elongated track has a predetermined elongated track cross-sectional design, a winch system connected to the track system wherein the winch system has a variable mechanical advantage, one or more elongated elastic members wherein one end of each of the one or more elongated elastic members is adjustably connected to the track system, and a carrier slidably mounted to the track system wherein the carrier is connected to the winch system and to the other end of each of the one or more elongated elastic members.
Owner:U S GOVERNMENT AS REPRESENTED BY THE ADMINISTATOR OF NAT AERONAUTICS & SPACE ADMINSTRATION
Geared spinal implant inserter-distractor
ActiveUS8114088B2Efficient and accurate deliveryGreat control and feedbackSpinal implantsOsteosynthesis devicesLinear motionPosterior approach
Owner:ZIMMER BIOMET SPINE INC
Back orthosis and orthotic method
ActiveUS20100168630A1The process is simple and effectiveReduce and eliminate back painRestraining devicesOrthopedic corsetsKnee orthosisEngineering
A lumbar orthosis that includes first and second, separate, opposing and mating front attachment panels; and a separate, laterally adjustable, rigid lumbar compression piece configured for positioning only at the rear of a wearer, wherein pulling of a cord causes the brace both circumferentially to tighten and to concentrate compression and pressure of the separate, laterally adjustable, rigid lumbar compression piece directly and especially upon a spinal region of a wearer's back with the aid of a mechanical advantage dependant upon a number of apertures through which the cord or cords pass. An orthosis and method for correcting lumbar and thoracic back pain and disorders is also disclosed.
Owner:CROPPER DEAN +1
Mechanical advantage tourniquet
InactiveUS20050113866A1Quick and easy applicationEfficiently and effectively compressTourniquetsElectric power systemTourniquet time
A pressure control apparatus for restricting a flow of blood through or from a body part includes at least one arcuate member for attaching to the body part. The at least one arcuate member has a first end and an opposite second end. The first end includes a hook for fastening to a buckle mounted at the opposite second end. A mechanical advantage power system includes a turnkey and is connected to the at least one arcuate member and serves to adjusting a pressure of the apparatus on the body part by turning the turnkey. An elongated strap is disposed on at least a circumferential portion of the arcuate member for circumferentially tightening the apparatus around the body part. A locking device closes the apparatus around the body part and is attached to the at least one arcuate member. A cover or shroud is disposed on an outer perimeter of the at least one arcuate member for enclosing a portion of the mechanical advantage power system.
Owner:PYNG MEDICAL CORP
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