摘要:
Apparatus is provided including a radially-expandable percutaneous implant shaped so as to define a tension-distributing element. A flexible longitudinal member is coupled at a first portion thereof to at least a portion of the percutaneous implant via the tension-distributing element. The tension-distributing element is configured to distribute tension applied by the flexible longitudinal member along a longitudinal length of the percutaneous implant.
摘要:
Apparatus is provided, including a radially-expandable percutaneous implant, a tissue anchor, and a connecting element shaped so as to provide an annular loop surrounding a proximal portion of the tissue anchor in a manner which enables rotation of the anchor about a central longitudinal axis thereof when surrounded by the annular loop. The apparatus also includes a flexible longitudinal member coupled at a first portion thereof to at least a portion of the percutaneous implant and at a second portion to the connecting element. The annular loop of the connecting element facilitates rotation of the tissue anchor about the central longitudinal axis such that the anchor can rotate about the central longitudinal axis with respect to the annular loop, the flexible longitudinal member, and the percutaneous implant. Other applications are also described.
摘要:
Apparatus is provided including a stent, which is configured to assume compressed and expanded states. The stent includes one or more elongated members, and two or more rings, which are coupled together by the one or more elongated members and by no other elements of the stent. The rings define respective planes that are generally perpendicular to the elongated members when the stent is in its expanded state. A longitudinal member, having a proximal end and a distal end, is coupled to the stent at the proximal end of the longitudinal member. A tissue anchor is coupled to the distal end of the longitudinal member. Other applications are also described.
摘要:
Techniques are described for use with one or more sutures. For some applications, techniques are described for fixedly-coupling two or more sutures to each other. For some applications, such techniques are used for treating a heart valve of a subject. Techniques are also described for treating a heart valve of a subject by coupling leaflets of the heart valve to a support using tissue-piercing elements. Other embodiments are also described.
摘要:
Apparatus for removing a dental periapical lesion at an apex of a root canal in a tooth, includes: an ablating device sized and constructed for (a) introduction through a cavity in the tooth into the root canal; (b) movement therethrough to protrude through the apex into contact with the dental periapical lesion; and (c) rotation while in contact with the dental periapical lesion in order to remove same by ablation. In some described embodiments, the ablating device includes a sleeve and a filament moveable therein to define a protruding curved end to be brought into contact with the dental periapical lesion for ablation thereof by rotation of the filament. In another described embodiment, the ablating device includes a sleeve and a filament within the sleeve and secured at one end to one end of the sleeve, the sleeve being formed with a plurality of slits such that, displacing the sleeve towards its secured end, produces outwardly-bowed surfaces along the slits effective to ablate the dental periapical lesion tissues upon rotation of the sleeve.
摘要:
Systems and methods for directing a device to a target region within a body cavity are provided. One embodiment includes a first catheter having a handle, an expandable cage, and a lumen therethrough, the expandable cage having a plurality of members that expand to engage a wall of the body cavity, a second catheter within the first catheter lumen having a hub at a distal end, and a plurality of pairs of wires secured at a first end within the handle of the first catheter and secured at a second end to the hub of the second catheter, each pair of wires being movable in conjunction with each other by manipulation of the handle so as to move the hub, a first pair of wires movable to move the hub in a first direction and a second pair of wires movable to move the hub in a second direction.
摘要:
The invention provides a ligament or tendon prosthesis. The prosthesis has at least two load bearing elements (6a, 6b) arranged in series and having different mechanical properties. The invention also provides a method for producing the prosthesis of the invention, as well as a method for replacing a torn or damaged ligament or tendon.
摘要:
The invention provides a tendon or ligament prosthesis having an undeployed configuration and a deployed configuration. The prosthesis has a resistance to tension in the undeployed configuration that is less than its resistance to tension in the deployed configuration. In the deployed configuration, the prosthesis is capable of twisting and bending. In one embodiment, the prosthesis has a meshwork of filaments woven, knitted or braided into a slender cylinder. In this embodiment, the prosthesis attains the deployed configuration by stretching the prosthesis from its undeployed configuration. The prosthesis may be used, for example, to replace an anterior or posterior cruciate ligament or to treat acromioclavicular joint separation, a rotator cuff tear, lateral collateral ligament tears, medial collateral ligament tears, or medial patello-femoral ligament tears. The invention also provides a method for replacing a tendon or ligament using the prosthesis of the invention.
摘要:
A method of treating a dental periapical lesion at an apex of a tooth root canal, by accessing the dental periapical lesion via the root canal; and removing the dental periapical lesion via the root canal. In the described preferred embodiments, the dental periapical lesion is accessed via an opening made in the tooth crown leading to the root canal; and the dental periapical lesion is removed by passing a rotary ablating device through the tooth crown, the root canal, and the apex, into engagement with the periapical lesion, rotating the ablating device to ablate the dental periapical lesion, and removing debris produced by the ablation of the periapical lesion via the root canal.
摘要:
Systems and methods for directing a device to a target region within a body cavity are provided. One embodiment includes a first catheter having a handle, an expandable cage, and a lumen therethrough, the expandable cage having a plurality of members that expand to engage a wall of the body cavity, a second catheter within the first catheter lumen having a hub at a distal end, and a plurality of pairs of wires secured at a first end within the handle of the first catheter and secured at a second end to the hub of the second catheter, each pair of wires being movable in conjunction with each other by manipulation of the handle so as to move the hub, a first pair of wires movable to move the hub in a first direction and a second pair of wires movable to move the hub in a second direction.