摘要:
A catheter for inserting into a bodily structure. The catheter includes a primary lumen for passing a device. One or more flaps or circumferential anchors protrude from a front tip of the catheter. The flaps or circumferential anchors engage with an inter-mural mucosa of the bodily structure.
摘要:
A method and apparatus for mucosal biopsy including a stationary base clevis component, upon which an open frame jaw is actuated rotationally to engage tissue and retract samples. A rack and pinion mechanism drives the jaw motion, which can be controlled axially by the physician. A metal retriever component captures tissue from the open frame jaw, and advances the samples proximally into the collection chamber, where they are maintained as the retriever is returned to its most distal position. Furthermore, the open frame design employs a reliable and compact means for actuation that can be decoupled from sample transfer and storage functions.
摘要:
A catheter sleeve assembly with a zipper-like locking structure is positioned on the outer cylindrical surface of an endoscope at a position outside the body while the endoscope is in viewing position inside the body. The zipper-like locking structure is split and the catheter-sleeve assembly is positioned about the endoscope body and locked into place. The catheter-sleeve assembly is then shuttled into and out of the distal viewing site along the body of the endoscope by manual manipulation while the endoscope remains in viewing position. Surgical stapling and tissue removal procedures can be performed with endoscopic surgical instruments passed down a lumen provided in the catheter-sleeve assembly.
摘要:
A system and method for gaining access to an internal bodily structure, such as the ampullae. The system includes an elongate catheter having a lumen extending there through. An elongate wire including distal coil is movably extendable from the distal end of the catheter and is configured to engage the inner surface of the bodily structure. Proximal movement of the elongate wire flattens the inner surface of the bodily structure and aligns the passageway thereof with the longitudinal axis of the catheter.
摘要:
Disclosed is an introducer apparatus comprising an sleeve fixation mechanism or introducer member, such as a catheter, introducer, or ring-like structure, which is attached to a protective sleeve comprising a thin flexible material such a polymeric film. The sleeve is inverted into the passageway of a second member, such as a catheter, feeding tube, introducer, etc., that is advanced through the passageway of the introducer member and is introduced into a bodily passage of a patient, such as the bile duct, nasal passages, colon, etc. The sleeve everts from the passageway of the second member during its advancement to lay down a friction-reducing surface. The sleeve prevents frictional contact between the second member and delicate or sensitive tissues.
摘要:
A material-fastening device and related fastener and methods for use, and more particularly, a device with segments of the fastener capable of being independently exposed from a holding mechanism and independently attached to or placed in proximity to the material.
摘要:
A medical device, such as a nasal-jejunal feeding tube, having an arrangement of flaps cut from the outer surface of the catheter and configured so as to not readily adhere to the catheter outer surface. The arrangement of flaps are configured to resist egress so as to permit peristaltic contractions of the body to propel the device forward, yet will allow the device to be removed from the body without the flaps causing significant trauma to the tissues of the body canal.
摘要:
This invention provides novel instrumentation surface structure for catheters, guide wires and other instrumentation for entering body canals to an internal body work site. This instrumentation is structured with a bi-directional surface friction for engaging tissue within the cavities and canals that they navigate. In this manner the naturally occurring peristalatic contractions are employed to advantageously grasp and carry the instrumentation toward its desired work site, significantly decreasing the risks of puncture and significantly decreasing the surgeon's time for entry of instruments to desired work sites in such procedures as small bowel enteroscopy where an endoscope enters the esophagus to be dynamically moved to work sites in the small intestine or colonoscopy where an endoscope enters the anal canal to be moved through the entire colon and gradually into the terminal ileum.
摘要:
A method and apparatus for mucosal biopsy including a stationary base clevis component, upon which an open frame jaw is actuated rotationally to engage tissue and retract samples. A rack and pinion mechanism drives the jaw motion, which can be controlled axially by the physician. A metal retriever component captures tissue from the open frame jaw, and advances the samples proximally into the collection chamber, where they are maintained as the retriever is returned to its most distal position. Furthermore, the open frame design employs a reliable and compact means for actuation that can be decoupled from sample transfer and storage functions.
摘要:
Disclosed is an introducer apparatus comprising an sleeve fixation mechanism or introducer member, such as a catheter, introducer, or ring-like structure, which is attached to a protective sleeve comprising a thin flexible material such a polymeric film. The sleeve is inverted into the passageway of a second member, such as a catheter, feeding tube, introducer, etc., that is advanced through the passageway of the introducer member and is introduced into a bodily passage of a patient, such as the bile duct, nasal passages, colon, etc. The sleeve everts from the passageway of the second member during its advancement to lay down a friction-reducing surface. The sleeve prevents frictional contact between the second member and delicate or sensitive tissues.