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Tube (fluid conveyance)

About: Tube (fluid conveyance) is a research topic. Over the lifetime, 135345 publications have been published within this topic receiving 663251 citations. The topic is also known as: tubing.


Papers
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Patent
02 May 1985
TL;DR: A catheter is provided with a coil section at the distal end which is stretched initially into a generally linear insertion position for moving inwardly a vessel, such as a blood vessel, to an operative location at which the coil section is re-formed with a larger diameter, preferably in the form of a hollow conical scoop to scoop clot material from the blood vessel as discussed by the authors.
Abstract: A catheter is provided with a coil section at the distal end which is stretched initially into a generally linear insertion position for moving inwardly a vessel, such as a blood vessel, to an operative location at which the coil section is re-formed with a larger diameter, preferably in the form of a hollow conical scoop to scoop clot material from the blood vessel. The coil section is stretched into the general linear insertion configuration by an internal wire which may be removed leaving a hollow passageway in the tube which can be stiffened by the application of fluid pressure such as a liquid to stiffen the coils. This assists in pulling the clot material from the vessel as the elastomeric material of the coils slides across the blood vessel walls without damaging the same. The preferred embodiment has two separate wire members associated with the flexible elastomeric tube of the catheter.

464 citations

Patent
21 Aug 1995
TL;DR: In this article, a therapeutic apparatus for stimulating healing of a wound in mammals is described. The apparatus comprises a porous foamed pad (36) connected by a tube (37, 38) to a canister (19), which is located within a housing having a recess for receiving the canister.
Abstract: A therapeutic apparatus is disclosed for stimulating healing of a wound in mammals. The apparatus comprises a porous foamed pad (36) connected by a tube (37, 38) to a canister (19). A vacuum pump is located within a housing having a recess (18) for receiving the canister. A bacterial filter (46) positioned over the outlet of the canister protects the vacuum pump from contamination by wound drainage fluids sucked into the canister.

463 citations

Patent
26 Oct 1999
TL;DR: In this article, an endoscope consisting of a control section and a shaft extending from the control section is presented, and the shaft has a frame with a one-piece tube along a majority of a length of the shaft.
Abstract: An endoscope comprising a control section and a shaft extending from the control section. The shaft has a frame with a one-piece tube along a majority of a length of the shaft. The tube comprises a superelastic alloy and slots into the tube along at least one-section of the tube. Superelastic properties of the superelastic alloy allow the tube to bend proximate the slots without substantial permanent deformation of the tube. The superelastic alloy provides the shaft with adequate stiffness and torque resistance to be inserted into a patient's body.

439 citations

Patent
26 Mar 1991
TL;DR: In this paper, an endoscope with a plurality of potential channels is described, where the tube is expanded by placing a tapered rod or fluid under pressure along the length of the insertion tube, or by elevating a flat coil into a cylindrical coil.
Abstract: An apparatus and method for providing an endoscope with a plurality of potential channels is disclosed. A tubing (54) having a radially flexible wall is positioned adjacent the endoscope insertion tube (34). The tubing (54) is collapsed prior to inserting the insertion tube (34) into the patient's body. After the insertion tube (34) is within the patient's body, the tubing (54) is expanded to create a channel. A medical apparatus may pass through the channel for performing a medical procedure. The tubing (54) is expanded by placing a tapered rod therethrough, by placing a fluid under pressure within the tubing (54), or by elevating a flat coiled wire into a cylindrical coil. A radially rigid tubing is placed within the expanded flexible tubing (54) to permit medical devices to extend from a position outside of the patient's body to the distal end of the insertion tube (34). A plurality of tubings (54) are provided circumferentially spaced from each other around the insertion tube (34) to permit a combination of medical devices to be used in cooperation with each other to perform a medical procedure. A stiffening member, such as a rod or fluid under pressure may extend partially along the length of the insertion tube (34) to vary the flexibility characteristics of the insertion tube (34) while it is within the patient's body.

421 citations

Patent
18 Sep 1990
TL;DR: A stone retrieval basket with superelastic metallic wires attached to the distal end of an inner elongated member tube for retrieving calculi and crushing them against an outer introducer tube percutaneously inserted into a patient is described in this article.
Abstract: A stone retrieval basket having superelastic metallic alloy wires attached to the distal end of an inner elongaged member tube for retrieving calculi and crushing them against an outer introducer tube percutaneously inserted into a patient. The basket comprises kink-resistant superelastic metallic alloy wires such as nitinol forming a bulbous shape for capturing calculi therein. The ends of the superelastic wires of the basket are attached to the distal end of a inner elongated member tube with the aid of sleeves crimped thereon, which are soldered or spot welded in recesses about the distal end of the inner tube. The outer tube is percutaneously inserted into the biliary or urinary system in which the basket is then inserted to capture large-sized stones. A peel-away sheath is also included to introduce the basket and inner elongatged member tube into the outer introducer tube. A dilator member, which is extendable through the passageway of the inner tube, removes any residual debris from the tube that may be left during the stone removal procedure.

407 citations


Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202224
20211,165
20202,947
20194,490
20185,707
20175,607