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25829results about How to "Increase stiffness" patented technology
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A surgical sealing device
A surgical sealing device (405), suitable for use during a surgical procedure such as a laparoscopic procedure or a hand-assisted laparoscopic procedure, comprises a first sealing member (5) and a second sealing member (6). A thin slit is defined between the sealing members (5, 6). In a closed configuration, the first sealing member (5) overlaps the distal end opening of a passageway (2) through the second sealing member (6) to prevent leakage of insufflation gases out of an abdomen (4). In an open configuration, the first sealing member (5) is retracted to reveal the distal end opening of the passageway (2) and thus facilitate passage of an object, such as a surgeon's hand or forearm (3), into the abdomen (4). The device (405) comprises a planar support element (406) fixedly attached to the proximal exterior surface (408) of the first sealing member (5). The first sealing member (5) is fixedly attached to the second sealing member (6) at an attached region (409), with a detached region (407) remaining detached from the second sealing member (6). The support element (406) acts as a stiffening element to increase the stiffness of the detached region (407) of the first sealing member (5) to minimise the deformation of the detached region (407) of the first sealing member (5) when the surgeon's hand / forearm (3) is pushed through the passageway (2). It is thus easier for the surgeon to retract the first sealing member (5) laterally to reveal the distal end opening of the passageway (2) by pushing the hand / forearm (3) through the passageway (2) and easier for the surgeon to pass the hand / forearm (3) through the device (405) and gain access to the abdomen (4).
Owner:ATROPOS LTD
Spine stabilization system
InactiveUS6989011B2Relief the painPrevent rotationInternal osteosythesisJoint implantsEngineeringImage stabilization
The invention generally concerns a spine stabilization system having one or more flexible elements having an opening or slit. The flexible element may be integrally formed in a rod having ends capable of receiving fasteners. The flexible element may limit rotation, flexion-extension, or lateral bending of the spine. The slit or opening may form helical pattern on the rod, and more than one slit or opening may be provided. The flexible element may be conformable to the natural spinal movement.
Owner:GLOBUS MEDICAL INC
Spine stabilization system
InactiveUS6986771B2Relief the painPrevent rotationInternal osteosythesisJoint implantsLocking mechanismImage stabilization
A spine stabilization system having one or more flexible elements with tubular structures with openings or slits. The flexible elements may limit rotation, flexion-extension, or lateral bending of the spine. The system also may have a locking mechanism that secures one or more flexible elements in a rigid configuration. A flexible element may be disposed within another flexible element, and the slits may form helical patterns on the tubular structures. The flexible element may be conformable to the natural spinal movement.
Owner:GLOBUS MEDICAL INC
Nano graphene reinforced nanocomposite particles for lithium battery electrodes
ActiveUS20100143798A1Increase stiffnessHigh strengthActive material electrodesSecondary cellsLithium metalNanocomposite
A solid nanocomposite particle composition for lithium metal or lithium ion battery electrode applications. The composition comprises: (A) an electrode active material in a form of fine particles, rods, wires, fibers, or tubes with a dimension smaller than 1 μm; (B) nano graphene platelets (NGPs); and (C) a protective matrix material reinforced by the NGPs; wherein the graphene platelets and the electrode active material are dispersed in the matrix material and the NGPs occupy a weight fraction wg of 1% to 90% of the total nanocomposite weight, the electrode active material occupies a weight fraction wa of 1% to 90% of the total nanocomposite weight, and the matrix material occupies a weight fraction wm of at least 2% of the total nanocomposite weight with wg+wa+wm=1. For a lithium ion battery anode application, the matrix material is preferably amorphous carbon, polymeric carbon, or meso-phase carbon. Such a solid nanocomposite composition provides a high anode capacity and good cycling stability. For a cathode application, the resulting lithium metal or lithium ion battery exhibits an exceptionally high cycle life.
Owner:SAMSUNG ELECTRONICS CO LTD
Adhesive composite having distinct phases
InactiveUS6927315B1Increase stiffnessHigh tensile strengthPlastersAdhesive dressingsMoisture vapor transmission rateEngineering
A conformable adhesive article for use as a sterile medical dressing is described. The article includes a breathable polymeric matrix, a plurality of phases, and an adhesive composition positioned on the polymeric matrix. The plurality of phases preferably provide reinforcement and stiffness to the article. The article permits transport of moisture across the breathable polymeric matrix, preferably at an Inverted water moisture vapor transmission rate of at least 300 g / m2 / 24 hours.
Owner:3M INNOVATIVE PROPERTIES CO
Medication delivery device with bended piston rod
InactiveUS6537251B2Improve accuracyImprove stabilityLiquid surface applicatorsAutomatic syringesDrive wheelSelf-treatment
Owner:NOVO NORDISK AS
Process for producing nano graphene reinforced composite particles for lithium battery electrodes
ActiveUS20100176337A1Increase stiffnessHigh strengthCell electrodesLi-accumulatorsFiberLithium metal
Owner:SAMSUNG ELECTRONICS CO LTD
Freeform fabrication method using extrusion of non-cross-linking reactive prepolymers
InactiveUS20020113331A1Fast formingDifficult to prepareProgramme controlComputer controlCross-linkThermoplastic
An extrusion-based freeform fabrication method for making a three-dimensional object from a design created on a computer, including (a) providing a support member; (b) operating a dispensing head having at least one dispensing nozzle with a discharge orifice for dispensing continuous strands of a material composition in a fluent state at a first temperature onto the support member, the material composition including a reactive prepolymer with a melting point above 23° C. and the first temperature being greater than the prepolymer melting point; (c) operating material treatment devices for causing the dispensed strands of material composition to rapidly achieve a rigid state in which the material composition is substantially solidified to build up the 3-D object, the material treatment devices also working to convert the reactive prepolymer to a higher molecular weight thermoplastic resin; and (d) operating control devices for generating control signals in response to coordinates of the object design to control the movement of the dispensing nozzle relative to the support member and for controlling the strand dispensing of the material composition to construct the 3-D object.
Owner:ZHANG TAN +3
Spine stabilization system
ActiveUS20060041259A1More rigidIncrease stiffnessInternal osteosythesisJoint implantsFastenerLateral bending
The invention generally concerns a spine stabilization system having one or more flexible elements having an opening or slit. The flexible element may be integrally formed in a rod having ends capable of receiving fasteners. The flexible element may limit rotation, flexion-extension, or lateral bending of the spine. The slit or opening may form helical pattern on the rod, and more than one slit or opening may be provided. The flexible element may be conformable to the natural spinal movement.
Owner:GLOBUS MEDICAL INC
Advanced endovascular graft
This invention is a system for the treatment of body passageways; in particular, vessels with vascular disease. The system includes an endovascular graft with a low-profile delivery configuration and a deployed configuration in which it conforms to the morphology of the vessel or body passageway to be treated as well as various connector members and stents. The graft is made from an inflatable graft body section and may be bifurcated. One or more inflatable cuffs may be disposed at either end of the graft body section. At least one inflatable channel is disposed between and in fluid communication with the inflatable cuffs.
Owner:BOSTON SCI CORP
Emitter driver for noninvasive patient monitor
ActiveUS8688183B2Raise the possibilityIncreased complexityDiagnostics using lightOptical sensorsElectrical conductorEngineering
Embodiments of the present disclosure include an emitter driver configured to be capable of addressing substantially 2N nodes with N cable conductors configured to carry activation instructions from a processor. In an embodiment, an address controller outputs an activation instruction to a latch decoder configured to supply switch controls to activate particular LEDs of a light source.
Owner:MASIMO CORP
Devices, systems and methods for material fixation
A material fixation system is particularly adapted to improve the tendon-to-bone fixation of hamstring autografts, as well as other soft tissue ACL reconstruction techniques. The system is easy to use, requires no additional accessories, uses only a single drill hole, and can be implanted by one person. Additionally, it replicates the native ACL by compressing the tendons against the aperture of the tibial tunnel, which leads to a shorter graft and increased graft stiffness. It is adapted to accommodate single or double tendon bundle autografts or allografts. It also provides pull out strength measured to be greater than 1000 N.
Owner:CAYENNE MEDICAL INC
Sliding shell package for smoking articles
InactiveUS7014039B2Increase stiffnessMaximum engagementContainers for flexible articlesPackaging cigaretteAbutmentBiomedical engineering
Smoking articles, such as filter cigarettes, are packaged in a metal box which is curved to a shape that conforms to the curvature of the human body so that the box can be comfortably carried in a shirt or pant pocket. The metal box comprises a lid and a four sided tray. The lid and the tray have rolled lips which interengage to mechanically and slidably retain the lid to the tray. The lid covers the open front of the tray and is slidable along an arcuate path corresponding to the radius of curvature of the lid to selectively open or close the front of the tray. The lid of the box includes an abutment that prevents the lid of the box from being completely removed unless additional force is applied to push the abutment past the rear wall of the tray.
Owner:R J REYNOLDS TOBACCO COMPANY
Bendable catheter arms having varied flexibility
ActiveUS20110213231A1Length of may varyIncrease flexibilityElectrocardiographyCatheterCatheter deviceElectrode
In various embodiments, a catheter comprising an expandable electrode assembly or basket is provided. In specific embodiments, the basket is particularly useful for mapping electrical activity at one or more locations within the heart. The basket can comprise a plurality of bendable or deflectable arms. At least one of the arms may have varied flexibility over its length in the form of one or more discontinuities of stiffness or flexibility at an elbow region or other variances in flexibility over the arm's length. Such variance in flexibility may allow the arm to assume a different bent configuration or respond to external factors more positively than possible with an arm having a static or near static flexibility or stiffness over its length.
Owner:ST JUDE MEDICAL ATRIAL FIBRILLATION DIV
Poly(arylene ether)-containing thermoset composition, method for the preparation thereof, and articles derived therefrom
InactiveUS6627704B2Fast curingReduce sensitivitySynthetic resin layered productsPolyether coatingsHeat resistanceEther
Owner:SABIC INNOVATIVE PLASTICS IP BV
Catheher system having connectable distal and proximal portions
InactiveUS6050949AEnhanced hoop strengthBending stiffnessUltrasonic/sonic/infrasonic diagnosticsSurgeryPlastic materialsUltrasonic imaging
A vascular catheter system comprises a catheter body having a proximal and distal portion and a single common lumen therebetween. The catheter body includes a first connector secured to the distal end of the proximal portion and a second connector secured to the proximal end of the distal portion. The connectors can be selectively connected to each other to join the lumens of the proximal and distal portions together in a continuous, axially fixed relationship. Disposed within the lumens, when the proximal and distal portions are joined together, is a drive cable. The drive cable may be movably, rotatable about its own longitudinal axis and carries at its distal end, a work element, which is typically an ultrasonic imaging transducer or interventional device. The lumen carrying the cable will be sufficiently large along a proximal portion to permit preferential collapse of the cable should rotation of the distal end become impeded. The catheter body may be made of a polymer or plastic material, such as polyetheretherketone (PEEK), which provides adequate bonding stiffness and resistance to kinking from large hoop stresses.
Owner:BOSTON SCI SCIMED INC
Vascular device for emboli and thrombi removal and methods of use
InactiveUS7306618B2Permit useFacilitate percutaneous introductionBalloon catheterInfusion syringesThrombusVascular device
Apparatus and methods are provided for use in filtering emboli from a vessel and / or performing thrombectomy and embolectomy, wherein a vascular device disposed on a guidewire comprises a support hoop disposed from a suspension strut. Alternately, a support hoop having an articulation region may be directly connected to a region proximate the distal end of the guidewire. A blood permeable sac is affixed to the support hoop to form a mouth of the blood permeable sac. The support hoop is disposed obliquely relative to the longitudinal axis of the guidewire and is capable of being properly used in a wide range of vessel diameters. The vascular device collapses during removal to prevent material from escaping from the sac. A delivery sheath and introducer sheath for use with the vascular device of the present invention are also provided.
Owner:INCEPT LLC
Methods and systems for material fixation
ActiveUS20080183290A1Easy to useHigh fixation of tendon-boneSuture equipmentsLigamentsTissue materialKnee Joint
A soft tissue fixation system, most typically applicable to orthopedic joint repairs, such as anterior cruciate ligament (ACL) knee repair procedures, comprises an implant which is placeable in a tunnel disposed in a portion of bone, wherein the tunnel is defined by walls comprised of bone. A first member is deployable outwardly to engage the tunnel walls for anchoring the implant in place in the tunnel, and a second member is deployable outwardly to engage tissue material to be fixed within the tunnel. The second member also functions to move the tissue material outwardly into contact with the tunnel walls to promote tendon-bone fixation. Extra graft length is eliminated by compression of the tendon against the bone at the aperture of the femoral tunnel, which more closely replicates the native ACL and increases graft stiffness. The inventive device provides high fixation of tendon to bone and active tendon-bone compression. Graft strength has been found to be greater than 1,000 N (Newtons), which is desirable for ACL reconstruction systems.
Owner:CAYENNE MEDICAL INC
Eversion resistant sleeves
ActiveUS20060161187A1Reduce coefficient of frictionIncrease stiffnessOesophagiIntravenous devicesThin walledDigestive tract
The invention relates to improved means for preventing eversion and subsequent obstruction of thin-walled, floppy gastrointestinal liners implanted in the digestive tract of an animal. The implantable devices include an anchor adapted for attachment within a natural body lumen and a thin-walled, floppy sleeve open at both ends and defining a lumen therebetween. A substantial length of the sleeve has material characteristics that result in the sleeve being prone to eversion in the presence of retrograde pressures. Exemplary eversion-resistant features provide an increased stiffness and / or an increased friction coefficient between the anchor and the proximal end of the sleeve to resist eversion. In some embodiments, the eversion-resistant feature includes an anti-buckling element, such as a wire coupled along the substantial length of the sleeve.
Owner:GI DYNAMICS
Adjustable stiffness catheter
Medical devices such as catheters can include structure or provision that permit a physician or other health care professional to adjust the stiffness of at least a portion of the medical device. In some instances, the medical device may be adjusted prior to inserting the medical device into a patient. In some cases, the medical device may be adjusted while in use within the patient.
Owner:BOSTON SCI SCIMED INC
Anti-buckling sleeve
The invention relates to improved means for preventing buckling and therefore eversion of thin-walled, flexible, floppy gastrointestinal liners implanted in the digestive tract of an animal. The implantable devices include an anchor adapted for attachment within a natural body lumen and a thin-walled, floppy sleeve open at both ends and defining a lumen therebetween. A substantial length of the sleeve has material characteristics that result in the sleeve being prone to buckling and therefore eversion in the presence of retrograde pressures. Exemplary anti-buckling mechanisms provide an increased stiffness and / or an increased friction coefficient between the anchor and the proximal end of the sleeve to resist buckling and therefore eversion. In some embodiments, the anti-buckling mechanism is as a wire coupled along the substantial length of the sleeve.
Owner:GI DYNAMICS
Golf Club Heads or Other Ball Striking Devices Having Distributed Impact Response
A ball striking device, such as a golf club head, includes a face having a ball striking surface configured for striking a ball and a body connected to the face and extending rearwardly from the face. The body has an impact-influencing structure positioned adjacent at least one peripheral edge of the face. A majority of a force generated by impact with a ball is absorbed by the impact-influencing structure, and a majority of a response force generated by the head upon impact with the ball is generated by the impact-influencing structure. The face may have increased stiffness as compared to existing faces, and may include a stiffening structure to create the increased stiffness. In one embodiment, the face may have a stiffness proximate the geometric center that is from about 4,600-5,600 lb-in2.
Owner:NIKE INC
Soft Exosuit for Assistance with Human Motion
ActiveUS20160107309A1Beneficial reduction in metabolic consumption of energyReduce loadProgramme-controlled manipulatorChiropractic devicesControl systemHuman motion
A motion control system includes an actuator having an actuation member, the actuation member having a proximal end attached to the actuator on a first side of a joint and a distal end attached to an anchor element attachment point on a second side of the joint. A first sensor is configured to output signals defining a gait cycle and a second sensor is configured to output signals representing a tensile force in the at least one actuation member. A controller receives the output signals from the sensors and actuates the actuator, during a first portion of the gait cycle, to apply a force greater than a predetermined threshold tensile force to the anchor element attachment point via the actuation member to generate a beneficial moment about the joint and to automatically actuate the actuator.
Owner:PRESIDENT & FELLOWS OF HARVARD COLLEGE
Combination sensor guidewire and methods of use
ActiveUS20060074318A1Improve accuracyImprove consistencyBlood flow measurement devicesCatheterUltrasonic sensorTransducer
The present invention provides for an improved combination sensor tip that includes an ultrasound transducer and a pressure sensor both disposed at or in close proximity to the distal end of the combination sensor tip. The present invention also provides for an improved connector to couple a guide wire to a physiology monitor that reduces torsional resistance when maneuvering the guide wire.
Owner:VOLCANO CORP
Variable stiffness catheter assembly
InactiveUS20070250036A1Variable stiffnessIncrease thrustStentsMulti-lumen catheterVariable stiffnessActive polymer
Owner:BOSTON SCI SCIMED INC
Remote centre of motion positioner
An apparatus having a member that revolves about a remote center of motion (RCM) and a base link coupled to a mounting fixture. A first and second link are pivotably coupled to the member at respective distances from the RCM and are translatable relative to the base link along a first direction, at a fixed ratio of displacement. The ratio of respective distances equals a fixed ratio of displacement. The apparatus has a translational motion generator for a first and second element along parallel opposing directions. The translational motion generator is disposed on the first link and enables motion parallel to the first direction. The base link is fixed in position, the first element is fixed to the base link and the second element is fixed to the second link, such that the first and second link may translate relative to the base link with fixed ratio of displacement.
Owner:KATHOLIEKE UNIV LEUVEN
Patent foramen ovale (PFO) closure device with radial and circumferential support
The present invention provides a device for occluding an anatomical aperture, such as a septal defect or patent foramen ovale (PFO). The occluder includes two sides connected by an intermediate joint. Each of the sides includes at least one elongate element, which is arranged to form non-overlapping loops. Each loop has at least one radially-extending segment that is adjacent to a radially-extending segment of another loop. In at least some embodiments, at least one pair of adjacent radially-extending segments is connected. The loops of the device may be of various shapes, sizes, and configurations, and, in at least some embodiments, the loops have rounded peripheries. In some embodiments, at least one of the sides includes a tissue scaffold. When the occluder is deployed in vivo, the two sides are disposed on opposite sides of the septal tissue surrounding the aperture, thereby exerting a compressive force on the septal tissue that is distributed along both the outer periphery of the occluder and the radially-extending segments.
Owner:NMT MEDICAL +1
Plasticized hetero-phase polyolefin blends
InactiveUS20080045638A1Increase stiffnessImprove impact toughnessPigment pastesPolyolefinHigh stiffness
This invention relates to hetero-phase polyolefin compositions comprising: a) 30 to 99.7 wt % of a polypropylene-based TPO comprising at least 50 wt % propylene and at least 10 wt % ethylene, and b) 0.1 to 20 wt % of one or more non-functionalized plasticizer, and c) 0.2 to 50 wt % of one or more filler; based upon the weight of the composition, and having: i) an MFR of 5 dg / min or more, and ii) a flexural modulus of 500 MPa or more, and iii) a notched Charpy impact strength at −30° C. of 1 kJ / m2 or more or a notched Izod impact strength at −18° C. of 50 J / m or more.These compositions are especially useful in applications such as automotive parts that demand both high stiffness and high impact toughness, as well as good processibility during fabrication.
Owner:EXXONMOBIL CHEM PAT INC
Metal salts of hexahydrophthalic acid as nucleating additives for crystalline thermoplastics
InactiveUS6599971B2Excellent calcium stearate compatibilityExcellent high peak crystallization temperatureOrganic compound preparationFibre treatmentThermoplasticScavenger
Compounds and compositions comprising specific metal salts of hexahydrophthalic acid (HHPA) in order to provide highly desirable properties within thermoplastic articles are provided. The inventive HHPA derivatives are useful as nucleating and / or clarifying agents for such thermoplastics, are practical and easy to handle. Such compounds provide excellent crystallization temperatures, stiffness, and acid scavenger compatibility within target polyolefins. Also, such compounds exhibit very low hygroscopicity and therefore excellent shelf stability as powdered or granular formulations. Thermoplastic additive compositions and methods of producing polymers with such compounds are also contemplated within this invention.
Owner:MILLIKEN & CO
Mechanical manipulator for surgical instruments
ActiveUS20130304084A1Solve the lack of stiffnessSolve the lack of precisionDiagnosticsSurgical manipulatorsConventional laparoscopyEngineering
A novel mechanical system, based on a new cable driven mechanical transmission, able to provide sufficient dexterity, stiffness, speed, precision and payload capacity to actuate multi-DOF micro-manipulators. Besides the possibility of being used in several articulated surgical instruments and robotic systems for surgery or other applications involving remote manipulation, it enables the design of a novel fully mechanical surgical instrument, which offer the advantages of conventional laparoscopy (low cost, tactile feedback, high payload capacity) combined with the advantages of single port surgery (single incision, scarless surgery, navigation through several quadrants of the abdominal cavity) and robotic surgery (greater degrees of freedom, short learning curve, high stiffness, high precision, increased intuition). The unique design of the proposed system provides an intuitive user interface to achieve such enhanced manoeuvrability, allowing each joint of a teleoperated slave system to be driven by controlling the position of a mechanically connected master unit.
Owner:ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL)
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