摘要:
The present invention provides methods and devices (100) for grasping (106), and optional repositioning and fixation of the valve leaflets (LF) to treat cardiac valve regurgitation, particularly mitral valve regurgitation. Such grasping will typically be atraumatic providing a number of benefits. For example, atraumatic grasping may allow repositioning of the devices relative to the leaflets and repositioning of the leaflets themselves without damage to the leaflets. However, in some cases it may be necessary or desired to include grasping which pierces or otherwise permanently affects the leaflets. In some of these cases, the grasping step includes fixation (115).
摘要:
The methods, devices, and systems are provided for performing endovascular repair of atrioventricular and other cardiac valves in the heart. Regurgitation of an atrioventricular valve, particularly a mitral valve, can be repaired by modifying a tissue structure selected from the valve leaflets, the valve annulus, the valve chordae, and the papillary muscles. These structures may be modified by suturing, stapling, snaring, or shortening, using interventional tools which are introduced to a heart chamber. The tissue structures can be temporarily modified prior to permanent modification. For example, opposed valve leaflets may be temporarily grasped and held into position prior to permanent attachment. In one aspect, a structure is deployed in a gutter region of the valve annulus to modify the shape of the valve.
摘要:
A multi-clip device for hemostasis includes an introducing tube (outer sheath) insertable into a body cavity. An operating wire is disposed within the introducing tube and is advanceable and retractable within the introducing tube. A plurality of detachable clips are arranged in a serial fashion within the introducing tube. Each clip has an engagement portion at the proximal end thereof and a plurality of arms extending towards the distal end thereof. The distal end of the operating wire engages the engagement portion of the proximal most clip, and the arms of the proximal most clip engage the engagement portion of the adjacent distally located clip. An expandable collar is slidably disposed about the arms of the clip and is configured such that when the collar is moved distally over the arms it closes and holds them in a closed position. The expandable collar has an expanding portion that is engaged by the distal end of t introducing tube so that the introducing tube can be used to advance the collar distally relative to the clip.
摘要:
A fixation device (10) for engaging tissue (LF) comprising: a pair of fixation elements (16,18) each having a first end, a free end opposite the first end, and an engagement surface therebetween for engaging the tissue, the first ends being movably coupled together such that the fixation elements are moveable between a closed position wherein the engagement surfaces face each other to an inverted position wherein the engagement surfaces face away from each other; and an actuation mechanism (12) coupled to the fixation elements adapted to move the fixation elements between the closed position and the inverted position.
摘要:
An implantable band for placement around an anatomical passageway, such as the stomach or other lumen, includes a first end portion with an opening configured to receive part of a second end portion, with a retaining part included as part of the first or second end portion.
摘要:
A wound closure device for closing a surgical wound is provided. The device includes a flexible base sheet and at least one flexible hemostatic clip for applying pressure to a patient's tissue. The flexible base sheet includes at least a first end and a second end, as well as an aperture extending through the base sheet longitudinally from proximate to the first end toward the second end. The aperture has a first and a second longitudinally extending edge. The clip has a first end, a second end, a top, a bottom, and at least a first and a second clamping member. Each clamping member has a distal edge. The clip is attachable to the base sheet.
摘要:
A tensioning system (10) for restricting the available volume of a gastric cavity includes a base material (12) that is shaped and dimensioned for surgical attachment to surfaces (14, 15) on or within the body. Multiple tensioning members (18) are incorporated into the base material, each of the tensioning members including a first end (22) and a second end (24), wherein pulling upon the tensioning member will cause edges of the base material to be drawn together. The method for restricting the available volume of a gastric cavity includes securing edges of a tensioning system to the gastric cavity and drawing the edges of the tissue together to create a fold in the tissue.
摘要:
The methods, devices, and systems are provided for performing endovascular repair of atrioventricular and other cardiac valves in the heart. Regurgitation of an atrioventricular valve, particularly a mitral valve, can be repaired by modifying a tissue structure selected from the valve leaflets, the valve annulus, the valve chordae, and the papillary muscles. These structures may be modified by suturing, stapling, snaring, or shortening, using interventional tools (30, 36, 56) which are introduced to a heart chamber. Preferably, the tissue structures will be temporarily modified prior to permanent modification. For example, opposed valve leaflets may be temporarily grasped and held into position prior to permanent attachment.