Abstract:
Apparatus for sterilisation of a female mammal comprising at least one separation member for separation of a fallopian tube from a uterine cavity of the female mammal, a circulation assembly which is operatively connected to said at least one separation member, and at least one sterilisation lumen which is operatively connected to said circulation assembly and debouching at a distal side of said at least one separation member, said at least one sterilisation lumen being adapted for injection in use of a tissue necrotising fluid capable of necrotising a lining of at least a part of said fallopian tube, wherein said circulation assembly is adapted to circulate said tissue necrotising fluid within said sterilisation lumen and said fallopian tube. The apparatus allows quick, simple, safe and reliable sterilisation.
Abstract:
The invention relates to balloon catheters (1) and methods of treatment for exerting internal pressure on surrounding tissue of a mammalian duct or cavity in a section thereof having a substantially circular cylindrical configuration. The elongate rigid distal section and the intermediate section of the catheter contain a central tube (3), whose distal part is provided with at least one outlet (23) for medium within the balloon, and whose intermediate part is surrounded by an axially displaceable tube (4), onto whose distal end the proximal end of the balloon is attached. The balloon has an envelope which is constituted by at least one substantially gas- and liquid-impermeable and elastic internal layer and an external layer of limited radial expansion, said expansion being substantially independent of the axial length of said balloon. The balloon may he encompassed by a radially expandible stent (40), or can be equipped with means for supplementing treatment using pressure with heat treatment.
Abstract:
An apparatus for effecting hyperthermia in a narrow body cavity or duct including: a disposable first part (1) having an elongate distal section (5) intended to be inserted into the cavity or duct having a centrally located, heat-releasing element (22), which is either surrounded by an elongate housing (24) or is itself constituted by an elongate housing, and a flexible and/or elastic enclosure (23) surrounding the housing in a liquid-tight manner, further including a device for supplying energy to the heat-releasing element (22) and an axially operating first inlet (135) at the proximal part of the housing, an outlet (133) from the housing being arranged for the supply of heat-transmitting medium under pressure for expansion of the flexible enclosure (23) to accommodate and to exert a controlled pressure on surrounding walls of the cavity or duct, a second inlet (131) to the housing (24), and medium-actuating device (13, 19) for the expansion of the flexible enclosure (23) and for internal circulation of the medium through the housing (24); and a permanent non-disposable second part (51) having a drive (55, 75) for the device (13, 19) for expansion and for internal circulation, and a connection (43, 59; 41, 81) for releasably interconnecting the drive (55, 75) and the device means (13, 19) for expansion and internal circulation.
Abstract:
The present invention is directed to an arrangement of cascade arc plasma torches in a process for plasma polymerization. The arrangement is utilized in low temperature plasma polymerization coating and utilizes a plasma reactor with concentric electroconductive rings separated by insulator rings. The rings are positioned between electrode connectors and form a central passage through the plasma reactor. A voltage supply source provides a voltage across the plasma reactor so as to initiate and continue the polymerization coating process. Downstream of the plasma reactor, an arrangement is provided by which monomeric gas is fed into a passage at a downstream end of the reactor so as to enable plasma polymerization.
Abstract:
A device for transluminal implantation of a substantially tubular, radially expansible prosthesis (2), comprising in combination such prosthesis (2) and concentric therewith a flexible probe (1) with means (200) for maintaining said prosthesis (2) in a radially contracted state and for releasing same at the desired location, said means for maintaining and releasing the prothesis comprising a hose (5) concentrically surrounding said probe (1), one end of said hose being connected to the probe (1), and the hose (5) being folded inside itself to form a double-walled section (51, 52) radially surrounding the prothesis (2), the latter being releasable by axial relative movement of the ends of the hose, characterized by inflatable balloon means (30) positioned between said probe (1) and said prosthesis (2) and substantially coextensive with the latter, whereby after releasing the prosthesis at the desired location in the lumen controlled expansion of the prosthesis and the surrounding lumen wall can be achieved by inflating the balloon means; and a method of transluminal implantation using such device.
Abstract:
A device and method for implantation of a prosthesis provides for insertion of the prosthesis in a location which is difficult to access. The prosthesis is held in a radially contracted state by the device. An expandable chamber within the device permits relative movements between elements of the devices as to permit the prosthesis to be inserted and radially expanded in the location.
Abstract:
There is disclosed a method of and apparatus for producing a wear-resistant coating on a thin metallic strip, for example for the manufacture of coating scrapers for paper webs. After preparatory surface treatment the strip is passed longitudinally through a coating zone in which coating material in a molten state is sprayed onto the strip by a coating unit as the strip passes. The wear-resistant coating is built up in steps by the application of several coating layers one on top of the other, each being applied during a respective pass of the strip through the coating zone. The strip speed and the capacity of the coating unit are adjusted in relation to each other so that the heat supplied to the carrier material by each coating layer applied will be so slight in relation to the thermal capacity of the carrier material that the temperature increase in the carrier material does not cause any change in the physical properties of the carrier material. After each pass of the strip, the strip is caused or allowed to cool so that the heat applied to the carrier material by the spraying on of each layer of coating is substantially removed therefrom before a new coating layer is applied. In a preferred method the strip is fed from one reel, over a roller to pass the coating unit, to be taken up on another reel and the apparatus is reversed after each pass so that the strip passes back and forth through the coating zone for successive coating steps.
Abstract:
Device comprising a helically shaped spiral spring and means for bringing the spring to expand from a first state of a certain diameter to a second state of larger diameter and vice versa, characterized thereby that said means are arranged to rotate the ends of the spring relative to each other with maintained length of the spring so that the transition from said first state to said second state takes place by reducing the number of spring turns within said length and the corresponding increase of the pitch of the spring, or to supply to a given length of the spring further spring material at at least one end of the said length of the spring so that the transition from said first state to said second state takes place independent of pitch and number of spring turns within the said length; and a method for transluminal implantation of an intravascular prosthesis using the said device.
Abstract:
A unit containing sorbent material intended for use as a thermal accumulator in a heat storage or refrigeration system operating under low pressure is manufactured by tightly enclosing sorbent material in a flexible, relatively thin casing (2,13,57,58,75,84,95,96). The casing is brought into close contact with the sorbent material in the casing by maintaining the pressure within the casing at a much lower level than the ambient pressure. This provides a rigid body and achieves satisfactory thermal conductivity. The casing is also designed to be sealingly connected to at least one inlet and/or outlet (3,15,16,37,61,82,83,106,107) for a gaseous substance cooperating with said sorbent material. The sorbent can be hermetically enclosed in a common casing composed of several casing parts, the wall parts of adjacent casing parts being joined in zones (97) in which internal passages (103-105) are arranged. As well as this, spaces (109) may be arranged between adjacent units forming through-flow channels for an external gaseous or liquid medium for the supply or removal of heat. The spaces (109,112,115) are provided, for instance, by means of spacers (110) arranged between adjacent casing parts ( 96,96a), some of said spacers also communicating with the inside of adjacent casing parts and thus also cooperating with spacer (116) for the gas to be absorbed or released, arranged in the casing parts.
Abstract:
Apparatus selectively convertible to perform one or more coating operations on a web of paper or the like comprises a fixed rotatable roller, a coating blade movable into and out of coating relation with the surface of the fixed roller and cooperating with a dam of coating material to coat a web as it passes through the nip between the coating blade and the fixed roller, and a second movable roller movable into and out of nip forming relation with the fixed roller with provision for adjustment of pressure in the nip and adapted to cooperate with a dam of coating material to coat a web as it passes through the nip between said rollers, said movable roller also being adapted alternatively to receive coating material and to transfer it to the fixed roller to coat one side of a web as it runs over the latter.