摘要:
In one embodiment, an access device is inserted through an incision in skin of a patient. The access device is expanded from a first configuration to a second configuration, the second configuration having an enlarged cross-sectional area at a distal portion of said access device such that the distal portion extends across at least a portion of the interbody space. A prosthetic spinal disc implant is then delivered through the access device.
摘要:
A device for provides access to a surgical location within a patient. The device has an elongate body that has a proximal portion, a distal portion, a first slot segment, and a second slot segment that is angled relative to said first slot segment. The elongate body defines a passage for accessing the surgical location with surgical instruments. The elongate body has a contracted configuration for insertion into the patient and an expanded configuration for providing access to the surgical location. The cross-sectional area of the passage at a first location of the elongate body is greater than the cross-sectional area of said passage at a second location of the elongate body. A movable tab is configured to extend into the second slot segment when the elongate body is in the expanded configuration to retain the elongate body in the expanded configuration.
摘要:
One embodiment is directed to a system for providing surgical access across a wall of a tissue structure, comprising a delivery member having proximal and distal ends; a first helical member having proximal and distal ends and a helical shape, the proximal end coupled to the delivery member distal end, the distal end extending distally of the delivery member distal end; an anchor member removably coupled to the helical member distal end; and a suture member coupled distally to a portion of the anchor member and extending proximally to a position wherein at least a portion of it may be freely manipulated by an operator; wherein upon rotation of the delivery member in a first direction, the first helical member and coupled anchor member are advanced across at least a portion of the wall of the tissue structure, pulling along the distal portion of the suture member in a deployed suture pattern which remains coupled to the anchor member, the deployed suture pattern being characterized in that it is substantially helical and represents a number of helical loops encapsulated by the wall of the tissue structure that is greater than about one helical loop, and is less than about three helical loops.
摘要:
A cannula (10) for receiving surgical instruments for performing a surgical procedure on a body includes a tubular structure (12) defining a passage (16) through which the surgical instruments are inserted into the body. The tubular structure (12) includes an expandable portion (40) for enabling an increase in the cross-sectional area of the passage (16). The expandable portion (40) of the tubular structure (12) has a slot (100) and a guide member (114) disposed in the slot. The guide member (114) is movable from a first end (102) of the slot (100) toward a second end (104) of the slot to enable the cross-sectional area of the passage (16) to increase. The expandable portion (40) has a stop (106) between the first and second ends (102 and 104) of the slot (100) engageable with the guide member (114) to retain the guide member in a position relative to the slot and resist movement of the guide member from the position relative to the slot.
摘要:
A surgical instrument extendable through a cannula for moving a first bone portion relative to a second bone portion includes a first portion having a longitudinal axis engageable with a first member connected with to the first bone portion. A second portion is engageable with a second member connected with the second bone portion. The second portion is movable relative to the first portion from a first position toward a second position to move the first and second bone portions away from each other. An actuator connected with the second portion moves the second portion relative to the first portion in a direction extending transverse to the longitudinal axis.
摘要:
One embodiment is directed to a method for providing surgical access across a wall of a tissue structure, comprising: installing a guiding member into the wall of the tissue structure to a desired guiding depth; using the installed guiding member as a positional guide, advancing a helical member into the wall of the tissue to a desired helical member depth, the helical member comprising a helical member distal end removably coupled to an anchor member which is coupled to a distal end of a suture member, such that advancing the helical member into the wall causes the anchor member to be advanced into the wall and to pull a distal portion of the suture member along with the anchor member into the wall to substantially encapsulate a number of helical loops of suture member that is greater than about 1 loop and less than about 3 loops; withdrawing the helical member from the wall of the tissue structure, leaving the anchor member in a deployed configuration decoupled from the helical member and coupled to at least a portion of the wall of the tissue structure; and tensioning the suture member to apply a load to the deployed anchor member.
摘要:
One embodiment is directed to a method for tensioning a suture member that crosses a portion of a wall of a tissue structure, comprising: advancing a distal portion of the suture member across at least a portion of a wall of the tissue structure; advancing a tensioning assembly, through which the suture member is threaded, toward the wall of the tissue structure; manipulating a elongate compressive loading member to adjust the physical relationship between the tensioning assembly, suture member, and tissue structure wall by modulating the position of the tensioning member base relative to the suture member and tissue structure wall with the tensioning mode switching member in the first mode; and controllably switching the tensioning mode switching member to the second mode.
摘要:
Embodiments are described for creating and closing tissue access ports, such as transapical access ports, which involve placement of an introducer across the subject tissue structure, and deployment of a controllable port closure device assembly configured to remain in place with a ratcheting mechanism, and to hold the tissue surrounding the previous access port location closed against a sealing disc with proximal and distal strut assemblies, after the introducer has been removed.
摘要:
One embodiment is directed to a system for tensioning a suture member that crosses a portion of a tissue structure, comprising: a tensioning member base having a tissue interface surface configured to engage a portion of the tissue structure when coupled to a suture member that may be threaded through the tensioning member base and into the tissue structure; a suture clamping member configured to be switched from a first mode, wherein a suture may be tensioned back and forth through a space defined at least in part by the clamping member, to a second mode, wherein a suture may only be tensioned in one direction relative to the suture clamping member; and a mode switching member movably coupled to the suture clamping member and configured to be operable to switch the suture clamping member from the first mode to the second mode.
摘要:
One embodiment is directed to a system for providing surgical access across a wall of a tissue structure, comprising: a delivery member having proximal and distal ends; a plurality of helical members, each having proximal and distal ends and a helical shape, each proximal end coupled to the delivery member distal end, each distal end extending distally of the delivery member distal end; a plurality of anchor members removably coupled to the helical member distal ends; and a plurality of suture members coupled distally to a portion of one of the anchor members and extending proximally to a position wherein at least a portion of each may be freely manipulated by an operator; wherein upon rotation of the delivery member in a first direction, the helical members and coupled anchor members are advanced across at least a portion of the wall of the tissue structure, pulling along the distal portions of the suture members in a deployed suture pattern which remains coupled to the anchor member.