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74 results about "Cruciated ligament" patented technology
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Method and suture-button construct for stabilization of cranial cruciate ligament deficient stifle
Owner:ARTHREX
Adjustable suture-button construct for knotless stabilization of cranial cruciate deficient ligament stifle
Owner:ARTHREX
Total Knee Prosthesis and Method for Total Knee Arthroplasty
A prosthetic knee implant for implantation into a mammal, which accommodates an anterior cruciate ligament substitute to provide stability to the knee implant. The prosthetic knee implant includes a femoral component having a pair of condylar surfaces and a tibial component having a surface portion adapted to slidably engage the femoral component upon rotation of the same. The femoral component further includes a central femoral recess between the condyles providing access to the femur for drilling a channel through which a cruciate ligament substitute may be integrated into the femur. The tibial component further includes a center portion defining an aperture through which the ligament substitute maybe threaded through the tibia and integrated therein, or anchored upon its surface. Also disclosed is a method used to replace the total knee joint in a mammal with the improved prosthetic knee implant of the present invention.
Owner:BLUM MICHAEL F
Extracapsular surgical procedure
Owner:WHITE RALPH RICHARD
Femoral Guide and Methods of Precisely Forming Bone Tunnels in Cruciate Ligament Reconstruction of the Knee
InactiveUS20010016746A1Precise positioningShorten the timeJoint implantsLigamentsBone tunnelCruciate ligament
<heading lvl="0">Abstract of Disclosure< / heading> A femoral guide for precisely positioning a guide wire on a bone surface of the femur includes a body having a lumen for receiving a guide wire and a tongue protruding from the body for engaging an edge or reference point on the bone surface with the tongue being spaced a predetermined distance from a longitudinal axis of the lumen. The lumen includes an opening allowing a guide wire extending through the lumen to contact the bone surface at a location spaced from the edge substantially the predetermined distance with the tongue engaging the edge. A stylus on the body can be driven into the bone to secure and stabilize the femoral guide prior to driving the guide wire into the bone through the lumen. With the guide wire driven into the bone, a bone tunnel can be formed substantially concentrically or coaxially along the guide wire such that a longitudinal axis of the bone tunnel will be disposed from the edge substantially the predetermined distance. Methods of precisely forming bone tunnels include the steps of engaging an edge of a bone surface with a tongue of the femoral guide, inserting a guide wire through a lumen of the femoral guide, driving the guide wire into the bone through the lumen and forming a bone tunnel in the bone along the guide wire such that a longitudinal axis of the bone tunnel will be disposed from the edge engaged by the tongue a distance substantially equal to the distance that the tongue is disposed from a longitudinal axis of the lumen.
Owner:MCGUIRE DAVID A +1
Organism implant, components thereof and preparation method thereof
The invention relates to an organism implant, components thereof and a preparation method thereof. The organism implant is made of degradable magnesium alloy, and is particularly suitable for being used as a fixing buckle for fixing cruciate ligaments, the total mass of the components of the degradable magnesium alloy is 100%, the content of magnesium accounts for 96.49%-98.9%, the content of calcium accounts for 0.1%-0.5%, the content of zinc accounts for 1-3%, and the sum of the content of other impurities accounts for not more than 0.01%; and the degradable magnesium alloy is obtained by preparation methods of vacuum smelting, solid solution heat treatment, extrusion process and rotary forging process. According to the organism implant, the components thereof and the preparation methodthereof, the biological implant has the characteristics of high strength and low degradation rate, and is suitable for being used as a material of the organism implant.
Owner:西安卓恰新材料科技有限公司
Cruciate ligament repairing structure and method
The invention relates to the technical field of medical apparatuses, and provides a cruciate ligament repairing structure and method. The cruciate ligament repairing structure comprises a fixed plateand two suture lines, and two line holes are formed in the fixed plate; the suture lines penetrate through one line hole, are wound into line loops, penetrate out of the other line hole, and finally return back to penetrate through the first penetrated line hole; the line holes which the two suture lines penetrate through are different, and after winding to form line loops, the end portions of thetwo suture lines are connected. According to the cruciate ligament repairing structure, after the two suture lines are wound into the line loops, the lengths of the line loops can be adjusted, it isavoided that the problems of hole drilling and the length of a transplant influence the fixing effect of a belt carrier titanium plate, and the cruciate ligament repairing structure and method have the advantages that the cost is low, and the safety is high.
Owner:STAR SPORTS MEDICINE CO LTD
Bionic tumor type knee joint prosthesis
ActiveCN109662809APrevent premature looseningPrevent refurbishmentJoint implantsIncreasing energy efficiencyKnee JointFEMORAL CONDYLE
The invention relates to a bionic tumor type knee joint prosthesis, which comprises a femoral assembly, a tibial assembly and an artificial ligament; the femoral assembly comprises a femoral condyle prosthesis; the tibial assembly comprises a tibial prosthesis, a tibial tray and a tibial pad, wherein the tibial pad is arranged on the upper part of the tibial tray for bearing the femoral condyle prosthesis, and the lower part of the tibial tray is formed with a tibial marrow needle for inserting a marrow cavity of the tibial prosthesis; cross channels are formed in the femoral condyle prosthesis, the tibial pad, the tibial tray, and the tibial prosthesis; artificial ligaments for reconstructing the cruciate cruciate ligament and the lateral collateral ligament are arranged in the cross channels formed by the femoral condyle prosthesis, the tibial pad, the tibial tray and the tibial prosthesis as well as on the inner and outer sides of the femoral condyle prosthesis and the tibial prosthesis. According to the bionic tumor type knee joint prosthesis, based on the bionics principle, the design of changing the rigid fixation into the flexible fixation is adopted, so that the defect thatthe stress of the hinged knee joint prosthesis to the femur and the tibia is large is solved while knee joint reconstruction is achieved, the possibility of loosening the prosthesis in advance and refurbishing again is effectively prevented, and the service life of the prosthesis is prolonged.
Owner:PEOPLES HOSPITAL PEKING UNIV
Knee joint driven by flexible driver
The invention discloses a knee joint driven by a flexible driver, and belongs to the technical field of biomimetic robots. According to the knee joint driven by the flexible driver, a biomimetic femurand a biomimetic tibia are arranged up and down, a simulated cruciate ligament is positioned between a biomimetic femoral condyle of the biomimetic femur and a biomimetic tibial condyle of the biomimetic tibia, and the biomimetic femur and the biomimetic tibia are separately provided with two bionic muscle pairs. Bionic muscle is attached to a biomimetic tendon and is fixed to a fixed ring. According to the knee joint driven by the flexible driver, super-spiral silver-plated nylon fibers are integrated into one driving unit to be applied to the knee joint, the spiral silver-plated nylon fibers are driven by electric heat to contract, and high-response, lag-free and easily-controlled linear contraction can be achieved; meanwhile, the rapid refrigeration effect of deionized water and semiconductor refrigeration is adopted, and high-frequency driving of the flexible driver can be achieved; and according to the knee joint driven by the flexible driver, the spiral silver-plated nylon fibers, the deionized water and semiconductor refrigeration equipment are integrated in one small silica gel, the deionized water is sealed by magnetofluid sealing equipment, so that the flexible driver iswell applied to the knee joint.
Owner:JILIN UNIV
Knee joint cruciate ligament brace and production method thereof
ActiveCN108378968AFlexible adjustment of bending angleLimit flexion and extensionMedical scienceAgainst vector-borne diseasesThighPhysical medicine and rehabilitation
The invention relates to a knee joint cruciate ligament brace. The knee joint cruciate ligament brace comprises a first curved plate, a second curved plate and an adjusting chuck, wherein bandages arerespectively arranged at the end parts of the first curved plate and the second curved plate; the inner side cambered surface of the first curved plate is matched with the front side of a thigh of auser; the inner side cambered surface of the second curved plate is matched with the rear side of a shank of the user; the first curved plate is rotationally connected with the second curved plate bythe adjusting chuck. According to the brace provided by the invention, a bending angle of the knee joint can be flexibly adjusted, and flexion-extension activities of the knee joint within a certain range is limited; in addition, the first curved plate and the second curved plate of the brace are arranged on the opposite sides of a leg and the interference on the activities of the user due to mutual collision during movement is avoided. The invention also provides a production method of the knee joint cruciate ligament brace. The production method is used for producing the knee joint cruciateligament brace according to individuation of the user; the brace can be well matched with the leg of the user.
Owner:PEKING UNIV THIRD HOSPITAL +2
Tension-reducing line for cruciate ligament reconstruction and knitting method thereof
The invention relates to a tension-reducing suture for cruciate ligament reconstruction and a knitting method thereof and belongs to the technical field of anterior and posterior cruciate ligament reconstruction. The knitting method comprises five major steps of suture preparation, suture fixing, initial knitting, medium-term knitting and ending knitting. According to the tension-reducing suture for the cruciate ligament reconstruction and the knitting method thereof, a single suture is placed in the middle of a transplanted tendon after the suture is knitted. The knitting method can not only improve the intensity and overcome the disadvantage that a tension-reducing suture is prone to breakage at the early stage, but also play the role of internal fixation of the tension-reducing suture. During the period of ligament shaping and reconstruction, excessive stress simulation is prevented from being applied to constructed ligaments to prevent the constructed ligaments from being pulled long, so that constructed ligament healing is facilitated. Moreover, the diameter of the reconstructed ACL or PCL can be moderately increased to enable the ACL or PCL to be attached to the internal surface of a bone tunnel as much as possible to allow bone-tendon to be healed well as soon as possible.
Owner:李彦林
Paraglider-shaped fixed plate device for cruciate ligament reconstruction
The invention discloses a paraglider-shaped fixed plate device for cruciate ligament reconstruction and aims at providing a paraglider-shaped fixed plate device for cruciate ligament reconstruction of knee joints. The paraglider-shaped fixed plate device comprises an elastic fixed plate and is characterized in that the elastic fixed plate is shaped like a conical umbrella; two ends of the elastic fixed plate are connected with a suspension loop; a standby extension loop is suspended on the suspension loop; a dragging loop connected with the dragging wire is suspended at the upper part of the elastic fixed plate; and a restraint loop provided with a restraint wire is suspended at the lower part of the elastic fixed plate. The dragging wire is a double-strand semi-loop type dragging wire with the length of 250-350mm. The elastic fixed plate is an elastic titanium alloy fixed plate with the length of 9-15mm, the width of 3-4mm and the thickness of 1.2-2mm after being strutted. The paraglider-shaped fixed plate device is mainly used for knee arthroscopic cruciate ligament reconstruction.
Owner:施晓明
Cruciate-retaining knee prosthesis
ActiveCN102821717AIncrease stiffnessHigh torsional rigidityJoint implantsSkullCruciate retainingTibia
Certain versions generally provide an improved tibial base member (for example, but not limited to, 10) comprising keel portions (for example, but not limited to, 14a, 14b, 14c) that allow one or both cruciate ligaments to be preserved. Other versions provide improved lateral and / or medial inserts (for example, but not limited to, 110, 210) having a mesial lip (for example, but not limited to, 118, 128) that helps relieve and / or prevent impingement between the femoral component (for example, but not limited to, 400) and the tibial eminence. Other versions provide improved femoral components (for example, but not limited to, 400) having various chamfers (for example, but not limited to, 404, 410, 470) to provide additional clearance with respect to the tibial eminence and posterior cruciate ligament without decreasing bone coverage.
Owner:SMITH & NEPHEW INC
Rotary pressurizing fixation steel plate for posterior cruciate ligament avulsion fracture
InactiveCN106955148AAvoid tension relaxationEffective tensionBone platesPosterior cruciate ligamentSelf locking
The utility model relates to a rotationally pressurized and fixed steel plate for posterior cruciate ligament avulsion fracture, which belongs to the technical field of orthopedic medical devices and is used for tensioning a pulling wire. The technical solution is: the steel plate is circular, and there are four circular holes on the surface of the circular steel plate, the four circular holes are uniformly distributed on the steel plate surface, and the distance between the center of the four circular holes and the center of the circular steel plate is equal, wherein The center line of the two round holes is perpendicular to the center line of the other two round holes. There is a circle of pawls along the edge of the steel plate on one side of the steel plate. The braking direction of the multiple pawls is to surround the plate surface of the steel plate. same direction of the circle. The invention has the advantages of simple structure, convenient use and good self-locking effect, can effectively tighten the pulling wire, avoid the tension relaxation of the posterior cruciate ligament, and prevent the failure of the fixation operation due to the decrease of the tension of the posterior cruciate ligament.
Owner:THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV
Flexible drive knee joint exoskeleton
The invention discloses a flexible drive knee joint exoskeleton, and belongs to the technical field of robots. The knee joint exoskeleton comprises an exoskeleton body, a series elastic driver and parallel springs. The exoskeleton body comprises an output rod, a transmission connecting rod and a multi-connecting-rod mechanism. The multi-connecting-rod mechanism comprises an exoskeleton thigh connecting rod, a long crank, a short crank and a connecting rod piece, and a knee instantaneous center fitting four-rod mechanism is formed. All the components are in revolute pair connection with one another through knee coronal shafts. The exoskeleton thigh connecting rod is connected with the series elastic driver. The parallel springs are arranged on the front side and the rear side of the exoskeleton thigh connecting rod in a cruciate ligament imitating mode. A motor in the series elastic driver provides a torque, and the torque is transferred to the output rod, the transmission connecting rod and the multi-connecting-rod mechanism through the output shaft to drive the instantaneous center fitting four-rod mechanism to start so as to carry out bending motion with the knee joint of the human body at the same time and assist the knee joint of the human body in moving. According to the invention, the required torque of the motor is reduced, and the force output is stable.
Owner:BEIHANG UNIV
Knee joint cruciate ligament reconstruction fixer
The invention discloses a knee joint cruciate ligament reconstruction fixer, which comprises a nail sheath for being mounted into a tibial tunnel, wherein the nail sheath is provided with at least four elastic sheath walls, and the knee joint cruciate ligament reconstruction fixer further comprises a driven nail for being inserted into the nail sheath to radially expand the sheath walls; the sheath walls include at least one pair of oppositely arranged first sheath walls and at least one pair of oppositely arranged second sheath walls, each first sheath wall is provided with pointed lugs for being fixed in the tibial tunnel, each second sheath wall is provided with tendon-admitting holes in which a tendon can be embedded after being squeezed, and the first sheath walls and the second sheath walls are alternately arranged at intervals. During use, squeezed by the driven nail, the pointed lugs can be pressed into the wall of the tibial tunnel, so that the nail sheath is securely fixed; and under the action of own elasticity, a transplanted tendon can be automatically embedded into the tendon-admitting holes and a gap between every two adjacent sheath walls. The fixer can prevent a cutting effect on the transplanted tendon, and moreover, the fixer has a good fixing effect, and ensures the healing of the transplanted tendon in the tibial tunnel.
Owner:CHANGCHUN SINOBIOMATERIALS
System and method for side insertion of a bicondylar mini knee implant
InactiveUS20170290669A1Improve accuracyImprove precisionSurgical navigation systemsJoint implantsTibial boneArticular surfaces
Owner:JOINT INNOVATION TECH LLC
Reconstruction-type belt carrier fixing plate
Owner:YUNYI BEIJING MEDICAL INSTR CO LTD
Novel belt carrier fixing plate
PendingCN107951596AImprove stabilityGood for postoperative recoveryLigamentsMusclesCruciate ligamentReconstruction surgery
The invention discloses a novel belt carrier fixing plate, and belongs to the technical field of cruciate ligament reconstruction surgery. The novel belt carrier fixing plate comprises a belt carrierplate body, and a first threading hole and a second threading hole are formed in the belt carrier plate body. The side, away from the second threading hole, of the first threading hole is provided with a first penetrating part, and the side, away from the first threading hole, of the second threading hole is provided with a second penetrating part. The back surface of the belt carrier plate body is also provided with a protrusion part. By means of the novel belt carrier fixing plate, a variety of options are provided for tool type selection in the cruciate ligament reconstruction surgery, notonly can belt carrier fixing plates be selected and used at the two ends of a transplant, but also the belt carrier fixing plate can be selected and used at one end of the transplant, and an interfacescrew is selected and used at the other end of the transplant; through the arrangement of the protrusion part, the belt carrier fixing plate can be prevented from moving on the cortical bone back andforth, the installation stability is improved, and postoperative recovery of a patient is facilitated; an adjustable connecting line can be installed, type selection does not need to be calculated during the surgery, and the surgical time is shortened.
Owner:YUNYI BEIJING MEDICAL INSTR CO LTD
Method and Apparatus for Treating Cranial Cruciate Ligament Disease in Canines
ActiveUS20210052311A1Balanced permanent stabilityReduce instabilityLigamentsMusclesTibial boneCranium bone
A surgical guidance system (SGS) for performing a cruciate pivot osteotomy in canines to treat cranial cruciate ligament disease. The SGS comprises a guide, a jig, and a plate. The guide is first placed over the tibia until it interacts with specific anatomical features of the tibia, thereby marking the proper position for the jig to be placed. After the jig has been secured, a blade defines an osteotomy within a proximal portion of the tibia. A portion of the jig is then cranially rotated providing a rotational correction of the proximal tibia. A compressive force is then applied to the osteotomy by the jig. Next the multiplane locking plate is placed over the osteotomy as dictated by the features of the jig. After initially securing the plate into its correct position, the jig is removed and the plate is then secured to the cranial surface of the tibia.
Owner:FITCH RANDALL +1
Positioning device
PendingCN107080563ASolve the problem of blocking, that is, the problem of insufficient positioning depth of the high locator of the intercondylar ridgeSolve the problem of insufficient positioning depthBone drill guidesSurgical operationTibia
The invention provides a positioning device which is used for positioning a knee joint cruciate ligament. The positioning device comprises a connecting part, a fixing part and a guide part, wherein the fixing part and the guide part are positioned at the two ends of the connecting part; when positioning is performed in a knee joint tunnel, a hook part is directly propped against a first side of the tunnel without passing through the inside of the tunnel; the guide part is propped against a second side of the tunnel; the connecting part coats the outer side surface of a shank bone, so that the positioning device coats the shank bone from the outside of the tunnel, namely when positioning is performed in the tunnel, a medial arthroscopic approach is established; the positioning device enters through the posterior medial arthroscopic approach to position, so that the problem of insufficient depth of condylar concave tissue blocking, namely intercondylar crest higher positioner positioning, is solved, further, the surgical operation is simpler, and the surgical time is shortened.
Owner:NANJING BENQ HOSPITAL CO LTD
Tibial Plateau Leveling Osteotomy Plate with Offset
The device is a tibial plateau leveling osteotomy (TPLO) plate is used to stabilize a stifle joint in an animal in veterinary surgery after a torn cranial cruciate ligament. The TPLO plate has a proximal portion and a distal portion, connected by an offset portion.
Owner:NEW GENERATION DEVICES
Absorbable fixing loop for treating back cross ligament avulsion fracture
InactiveCN106983550AEliminate the "seesaw" phenomenonFit tightlyTissue regenerationBone platesHardnessArthroscopy
An absorbable fixation loop for treating avulsion fracture of posterior cruciate ligament belongs to the technical field of orthopedic medical devices and is used for treating avulsion fracture of posterior cruciate ligament under arthroscopy. The technical solution is: the two ends of the fixed loop are parallel and opposite fixed flat plates, the middle of the fixed loop is an upward arch, the arch is composed of a pressing plate and an arc-shaped plate, the pressing plate is a flat plate, and the upper ends of the two arc-shaped plates are respectively connected At both ends of the pressing plate, threading holes are respectively arranged on the fixing plates at the two ends of the fixing loop, and the material of the fixing loop is absorbable material. The present invention can make the fracture surface fit more closely, which is beneficial to healing; the present invention can be completely degraded and absorbed in the body, avoiding the risk of foreign bodies remaining in the joint cavity after surgery, and solving the problem of taking out the internal fixation in the second operation; the present invention can Provides optimal hardness, reducing the risk of internal fixation fracture after surgery. The invention has the advantages of simple structure, convenient use and excellent effect, and can obtain optimal prognosis curative effect in the treatment of posterior cruciate ligament avulsion fracture.
Owner:THE THIRD HOSPITAL OF HEBEI MEDICAL UNIV
Button plate and cruciate ligament reconstruction system and construction method thereof
The invention provides a button plate comprising a convex part and a ring plate part, wherein the convex part and the ring plate part are integrally formed or tightly connected; the two end faces of the ring plate portion along the thickness extending direction respectively form a first end face and a second end face; the convex part is convex with respect to the first end surface, and the convexpart is formed with an outer arc surface and an inner arc surface in the convex direction. The first end face and the second end face are respectively connected to the outer arc face and the inner arcface; the button plate is provided with a first seam hole; a first suture hole is formed on the protrusion; alternatively, the first suture hole is simultaneously provided on the protrusion and the ring plate portion. The invention also provides a cruciate ligament reconstruction system comprising the button plate and a construction method thereof. The invention can improve the fixation strengthand rotational stability of the graft on the tibia end in the ligament reconstruction operation, reduce the stress of the graft on the bone tissue, and improve the operation safety and the operation curative effect.
Owner:SHANGHAI LIGETAI BIOTECH CO LTD
Knee joint prosthesis and tibial component and femoral component thereof
The invention discloses an artificial knee joint and its tibia component and femur component. The tibial component includes an upper surface, an inferior surface opposite the upper surface, and a first groove. The first groove runs through the upper surface and the lower surface and is used for accommodating the cruciate ligament. The tibial component is provided with at least one first protrusion on the lower surface. The first protrusion has a plurality of first through holes. The tibial component carries the femoral component. The femoral component includes a second groove. The second groove is also used to accommodate the cruciate ligament, and the femoral component is provided with at least one second protrusion on a surface away from the tibial component. The second protrusion has a plurality of second through holes. The present invention can stably install the artificial knee joint after implantation without using bone nails, and can adopt cruciate ligament-retaining surgery to maintain the stability of the joint and reduce the wear and tear of the new joint.
Owner:花世源 +1
Belt carrier fixing plate
PendingCN107837131AIncrease contact areaReduce cuttingLigamentsMusclesCruciate ligamentMechanical engineering
The invention discloses a fixing plate, in particular to a belt carrier fixing plate, and belongs to the technical field of rebuilding of cruciate ligaments. The belt carrier fixing plate comprises afirst fixing plate, a second fixing plate and a connecting line; the first fixing plate and the second fixing plate are connected through the connecting line, wherein a first side face and a second side face of the first fixing plate are symmetrical to each other, the front end of the first side face is provided with a side face hole A1; the front end of the second side face is provided with a side face hole A2, the side faced hole A1 and the side face hole A2 are symmetrically arranged and penetrated to each other; the back end of the first side face is provided with a side face hole B1, andthe back end of the second side face is provided with a side face hole B2; the side face hole B1 and the side face hole B2 are symmetrically arranged and penetrated to each other; a back end face holeis arranged on the back end face of the first fixing plate, and the back end face hole is connected with the side face hole B1; the back end face hole is further connected with the side face hole B2.The belt carrier fixing plate has the advantages of effectively increasing contact area with a transplant, reducing the cutting of the transplant by the connecting line, and increasing the service life of the product.
Owner:YUNYI BEIJING MEDICAL INSTR CO LTD
A method for visual reconstruction of the cruciate ligament of the knee joint
Owner:WEST CHINA HOSPITAL SICHUAN UNIV
A bionic knee joint with variable transmission ratio for robots
ActiveCN110666834BHigh speedReduced torque requirementsProgramme-controlled manipulatorJointsPhysical medicine and rehabilitationKnee Joint
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
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