Abstract:
Apparatus is provided, including first and second longitudinal members coupled at respective first portions thereof to tissue surrounding the ventricle. The first portion of at least the first longitudinal member is coupled to a tissue anchor, and respective second portions of the first and second longitudinal members are coupled to respective first and second leaflets of a cardiac valve. The longitudinal members are arranged with respect to the tissue anchor and the portion of tissue surrounding the ventricle in a manner which facilitates adjustment of a degree of tension of the first and second longitudinal members to draw the first and second leaflets together. A longitudinal-member-coupling device is coupled to the first and second longitudinal members, and is advanceable toward a ventricular surface of the first and second leaflets, and responsively to draw together the first and second longitudinal members. Other applications are also described.
Abstract:
A steering tool including an internal tube disposed inside an external tube, the internal and external tubes being arranged for longitudinal axial movement relative to one another, wherein a distal end of the internal tube is fixedly joined to a distal end of the external tube, and at least one of the internal and external tubes is slotted near the distal end thereof, and wherein the longitudinal axial movement causes bending of the distal ends of the tubes.
Abstract:
Apparatus is provided, including a locking mechanism, an implant, and a flexible strip within the implant having a plurality of recesses. A perimeter of the strip shortens and expands when the first end of the strip is advanced bidirectionally with respect to a second end of the strip. The locking mechanism includes a moveable recess-engaging portion, a mechanical support removably coupled to the recess-engaging portion, and a force applicator which maintains the recess-engaging portion in a position in which the recess-engaging portion is not disposed in any of the recesses. Upon decoupling of the mechanical support from the recess-engaging portion, the force applicator restricts motion of the plurality of recesses of the strip with respect to the second end of the strip, by facilitating positioning of the recess-engaging portion in one of the plurality of recesses. Other embodiments are also described.
Abstract:
A needle assembly adapted for fluid communication with a vial containing a substance to be delivered to a subject, the needle assembly including a needle held in a needle holder, the needle holder confined to move in a housing, and an activation mechanism for activating delivery of the substance through the needle, the activation mechanism including a safety latch that initially impedes movement of the needle holder, wherein when the safety latch is placed on the subject, the safety latch moves to a position that permits moving the needle holder to cause the needle to protrude outwards of the housing to pierce the subject to allow administration of the substance to the subject, characterized by a biasing device arranged to apply a biasing force on the needle to cause the needle to protrude outwards of the housing to pierce the subject, and needle release apparatus including a needle arrestor that initially blocks movement of the biasing device and which releases the biasing device when the safety latch moves to the position that permits moving the needle holder to cause the needle to protrude outwards of the housing.
Abstract:
A method is provided, including coupling, to a first portion of tissue of a patient, a distal tissue coupling element of a tissue anchor. The tissue anchor further includes (a) an implant -coupling element, and (b) a cord, which is removably coupled to the implant-coupling element. The method comprises advancing an implant over the cord until the implant reaches and is coupled to the implant-coupling element. The method further includes restraining the implant from separating from the implant-coupling element, with an implant-restraining element of the implant-coupling element. Other applications are also described.
Abstract:
A cartridge insertion assembly including apparatus with a pathway formed therein, a cartridge insertable into the pathway, the cartridge including a cartridge coupling element connectable to an activation mechanism disposed in the apparatus operative to cause a substance contained in the cartridge to be metered out of the cartridge, and a door pivoted to the apparatus that includes a door coupling element arranged with respect to the cartridge such that when the door is in a fully closed position, the door coupling element couples the cartridge coupling element with a coupling element of the activation mechanism.
Abstract:
A method is provided including coupling a tissue-engaging element to a first portion of cardiac tissue of a heart of a patient and advancing toward the tissue-engaging element an adjustment mechanism along at least one guide member that is removably coupled to the tissue-engaging element. The adjustment mechanism engages a first portion of a first flexible longitudinal member. A second portion of the first flexible longitudinal member is coupled to a second portion of cardiac tissue. Following the coupling of the second portion of the first flexible longitudinal member to the second portion of cardiac tissue, the adjustment mechanism is slid further along the guide member and coupled to the tissue-engaging element. Using the adjustment mechanism, a length of the first flexible longitudinal member is adjusted between the first and second portions of cardiac tissue. Other applications are also described.
Abstract:
Apparatus is provided, including an artificial-chordeae-tendineae-adjustment mechanism and at least one primary artificial chordea tendinea coupled at a distal portion thereof to the artificial-chordeae-tendineae-adjustment mechanism. A degree of tension of the at least one primary artificial chordea tendinea is adjustable by the artificial-chordeae-tendineae-adjustment mechanism. One or more loops are coupled at a proximal portion of the at least one primary artificial chordea tendinea. The one or more loops are configured to facilitate suturing of the one or more loops to respective portions of a leaflet of an atrioventricular valve of a patient. Other applications are also described.
Abstract:
A cartridge interface assembly including a driving plunger including an outer shaft, and a driver including an inner shaft, the inner shaft mating with an intermediate shaft, the intermediate shaft mating with the outer shaft, so that the shafts are movable telescopically with respect to one another, wherein rotation of the driver causes the driving plunger to advance in a direction away from the driver.
Abstract:
Apparatus (10) is provided for use with a biologically-compatible-fluid pressure source (16), the apparatus (10) including an elongate carrier (26), adapted to be inserted through a proximal opening (18) of a body lumen (20), and a piston head (30) coupled to a distal portion of the carrier (26). The piston head (30) is adapted to form a pressure seal with a wall of the lumen (20) after the carrier (26) has been inserted into the lumen (20), and to be advanced distally through the body lumen (20) in response to pressure from the fluid pressure source (16). The apparatus (10) is configured to facilitate distal advancement of the piston head (30) by facilitating passage of fluid out of the lumen (20) from a site within the lumen (20) distal to the piston head (30). The apparatus (10) additionally includes an optical system (32), coupled to the carrier (26) in a vicinity of the distal portion, the optical system (32) having distal and proximal ends. The optical system (32) includes an image sensor (232), positioned at the proximal end of the optical system (32); an optical member (234) having distal and proximal ends, and shaped so as to define a lateral surface, at least a distal portion of which is curved, configured to provide omnidirectional lateral viewing; and a convex mirror (240), coupled to the distal end of the optical member (234), wherein the optical member (234) and the mirror (240) have respective rotational shapes about a common rotation axis.