摘要:
An overtube for use with an endoscopic surgical instrument. In various embodiments, the overtube may comprise a hollow tubular member that has an implantable tip detachably affixed to a distal end thereof. The implantable tip may have at least one retention member formed thereon to retain the tip within an organ wall. The implantable tip may further have a lumen extending therethrough to form a passageway through the organ wall. A plug member may be provided to selectively seal off the lumen within the implantable tip.
摘要:
An integrated securement and closure apparatus uses mechanical fasteners disposed in access lumens located radially outwardly from a centrally disposed opening for an endoscope. The mechanical fasteners are used to secure the distal end of an overtube against and isolate a target area of tissue inside a patient. An incision is made in the isolated target and the mechanical fasteners are used to approximate the tissue of the incision following and surgical intervention.
摘要:
Methods and devices are provided for deploying and applying a suture anchor. In one embodiment, a surgical device is provided having a shaft configured to be introduced into a body and to deliver a suture anchor with a coil of suture attached thereto to tissue. The shaft can be configured to deploy the suture anchor through tissue and to deliver the coil of suture into a body cavity such that the suture extending from the coil extends through the tissue to allow the anchor to engage the tissue. The coil can remain in the body cavity for subsequent use.
摘要:
An overtube for use with an endoscopic surgical instrument. In various embodiments, the overtube may comprise a hollow tubular member that has an implantable tip detachably affixed to a distal end thereof. The implantable tip may have at least one retention member formed thereon to retain the tip within an organ wall. The implantable tip may further have a lumen extending therethrough to form a passageway through the organ wall. A plug member may be provided to selectively seal off the lumen within the implantable tip.
摘要:
An integrated securement and closure apparatus uses mechanical fasteners disposed in access lumens located radially outwardly from a centrally disposed opening for an endoscope. The mechanical fasteners are used to secure the distal end of an overtube against and isolate a target area of tissue inside a patient. An incision is made in the isolated target and the mechanical fasteners are used to approximate the tissue of the incision following and surgical intervention.
摘要:
Apparatus, system, and method for use with an endoscope are disclosed. A flexible overtube having a proximal end and a distal end defines a hollow lumen therebetween to receive a flexible shaft portion of an endoscope therein. The proximal end of the flexible overtube is configured to remain outside of a patient and the distal end is configured to enter the patient through a natural orifice. At least one fluid tight seal is located at the proximal end of the flexible overtube to prevent leakage of fluids around the flexible shaft of the endoscope when the flexible shaft of the endoscope is positioned within the flexible overtube. The system further includes a flexible endoscope. The method includes introducing the system into a patient though a natural orifice of the patient and performing an endoscopic translumenal procedure.
摘要:
Various methods and devices are provided for cutting an opening through tissue. In one embodiment, a tissue-penetrating device is provided and includes a flexible elongate needle shaft that has a distal end with a circumferentially extending tissue-cutting edge formed thereon. A proximal end of the elongate needle shaft interfaces with a rotary control member for selectively applying a rotary motion to the elongate needle shaft. When the rotating tissue-cutting edge is brought into contact with target tissue, the tissue-cutting edge cuts an opening through the tissue. The device may have a stylet that has a blunt end that can be adjusted to protrude out of the distal end of the elongate needle shaft out beyond the tissue-cutting edge and is biased inward into the elongate needle shaft when the blunt end is brought into contact with the tissue to expose the tissue-cutting edge to the tissue. The stylet may be used as a guide wire after the hole has been cut through the tissue. An outer sheath may be provided to selectively cover the distal end of the elongate needle shaft and blunt end of the stylet. The outer sheath may have a selectively expandable member thereon that may be used to expand the cut hole
摘要:
Various devices and methods for dissecting and/or coagulating tissue are provided. In one embodiment, a surgical device is provided that includes an elongate member having proximal and distal ends, an energy emitter coupled to the distal end of the elongate member, and an insulating element that is disposed around the energy emitter. The insulating element can have an opening for receiving energy from the energy emitter, and the opening can be shaped to control a direction of energy emitted from the energy emitter.
摘要:
A guidewire structure includes a medical guidewire and an overtube. The medical guidewire includes a first segment and a lengthwise-adjoining second segment. The overtube is adapted to slidably cover the first segment and to slidably expose the first segment. A minimum force required to slide the exposed first segment over patient tissue is greater than a minimum force required to slide the covered first segment over the patient tissue. A method for using a guidewire structure includes extending at least a portion of the second segment beyond a distal end of an insertion tube of an endoscope, extending at least a portion of the first segment beyond the distal end with the overtube covering the extended first segment, sliding the overtube off the extended first segment exposing the first segment, and advancing the insertion tube along the exposed and extended first segment further into a body lumen of a patient.
摘要:
A first guidewire structure includes a medical guidewire having a working portion which is extendable beyond a distal end of a medical instrument. The working portion has a length, and the working portion is tapered for substantially one-hundred percent of the length. A second guidewire structure includes a medical guidewire having a working portion, wherein the working portion has a length, and wherein the working portion includes a tapered portion for over fifty percent of the length. A third guidewire structure includes a medical guidewire having a working portion. The working portion has a length, and the working portion includes a plurality of lengthwise-adjoining segment pairs for over fifty percent of the length. Each segment pair consists essentially of a non-tapered segment having a substantially constant cross section and a tapered segment lengthwise adjoining the non-tapered segment. Methods are described for using medical instruments having the guidewire structures.