RU2005499C1 - Device for spraying powdered substances, for example, x-ray contrast materials during bronchoscopy - Google Patents

Abstract

FIELD: medical engineering. SUBSTANCE: device comprises air pressure unit, casing 1 with dismountable cylindrical chamber 6 containing powdered material and with conical adapter 7 with gate 8, hollow handle 2 mounted eccentrically on casing and provided with hole 10 in side wall to control air stream through L-shaped spiral channel 9 in upper portion 4 of chamber 6. Conical end-piece is connected with powder delivery tube 3 whose distal end 14 has two opposed holes 15 in side wall and end-piece 16 made from X-ray contrast material. EFFECT: improved functional and operating characteristics. 2 dwg

Description

 The invention relates to medical equipment and can be used for spraying medicinal and radiopaque powdery substances on the inner walls of hollow organs, in particular of a bronchial tree in pulmonology.

 A device for introducing medicinal powdered substances, comprising an air injection unit, a housing with a cylindrical powder chamber with inlet and outlet openings, and a tube for supplying the powdered substance to the spraying zone.

 However, this device does not provide accurate summing and uniform distribution of the powdery substance on the inner walls of the hollow organ, especially radiopaque substances during contour bronchography.

 The purpose of the invention is to improve the accuracy of the summing and uniformity of the distribution of powdered substances on the inner walls of a hollow organ.

 Achieving this goal is ensured by a device for spraying powdery substances, for example, radiopaque during bronchography or bronchoscopy, containing a unit for pumping air, a housing with a cylindrical chamber for a powdery substance with inlet and outlet openings and a tube for supplying powder to the spraying zone. In the device, a hollow handle with an opening in the side wall for adjustment and a nozzle for connecting the air injection unit is eccentrically installed, the camera is detachable, connected to the handle cavity with an L-shaped spiral channel and separated by a valve from the conical adapter connected to the tube for supplying the powder substance , the distal end of which is made with two oppositely located holes in the side wall and a tip of radiopaque material.

 In FIG. 1 shows a device, a General view; in FIG. 2 is a section AA in FIG. 1 (shown L-shaped channel in the upper part of the camera).

 The device comprises a housing 1, a hollow handle 2 and a flexible tube 3 for supplying a powdery, for example, radiopaque, substance into the spraying zone.

 The housing 1 is made in the form of a detachable (having upper 4 and lower 5 parts) cylindrical chamber 6 and a conical adapter 7, separated from the chamber 6 by a valve 8. In the upper part 4 of the housing 1, the chamber 6 is connected to the cavity of the handle 2, eccentrically mounted on the housing, by an L-shaped spiral channel 9, opening on the inner generatrix of the chamber with an elliptical hole.

 An adjustment hole 10 is made in the side wall of the hollow handle 2, and its free end 11 is equipped with a pipe 12 for connecting the air duct 13 to the air injection unit (not shown).

 The conical adapter 7 is connected to a flexible tube 3, the distal end 14 of which is made with at least two oppositely located holes 15 in the side wall for the release of the powdered substance into the spraying zone and a tip 16 of radiopaque material.

 The device is used as follows. The chamber 6 is opened by disconnecting the parts 4 and 5 of the housing 1. The upper part 4 of the housing is exposed in connection (if it is detachable) with the arm 2 so that the hole 10 in its side wall is in the same plane with the outlet of the L-shaped spiral channel 9 in chamber 6. In the lower part 5 of chamber 6 with a closed gate 8, a diagnostic or medicinal powder substance, for example, radiopaque, is poured, and chamber 6 is collected. The device is connected through an air duct 13 to the air injection unit, a tube 3 is drawn into the cavity of the organ under study, for example, the bronchus, and under the control of bronchoscopy or fluoroscopy, the holes 15 of its distal end 14 are precisely set in the spraying zone of the substance on the inner wall of the hollow organ. The housing 1 and the hollow handle 2 connected to it are moved to a horizontal position with the adjustment hole 10 in the upper position and the powder is shaken placed positionally in the lower part 5 of the chamber 6 and moving to the side wall of the chamber opposite the inlet of the L-shaped channel 9 entering the chamber. Turn on the air supply (up to 98 MPa), which enters the cavity of the handle 2 and is discharged into the atmosphere through the hole 10 in its side wall. Open the valve 8 and use your finger to close the hole 10, which acts as a valve, for 2-3 s, while turning the device around its axis. In this case, air from the cavity of the handle 2 is directed into the cavity of the chamber 6 through the L-shaped spiral channel 9 and, leaving the formed stream through its ellipse hole, moves along the inner generatrix of the chamber, creating a vortex air flow. Due to the swirling of the air flow, a surface layer-by-layer powder selection takes place without residue, which enters the spraying zone through the conical adapter 7, the tube 3 and the holes 15 of its distal end 14. Excess air from the organ cavity is discharged into the atmosphere through the organ’s natural lumen or formed channel.

 Dosed spraying of a powdery substance on the inner walls of a hollow organ in a given area throughout is carried out by repeatedly overlapping the hole 10 in the side wall of the hollow handle 2 and moving the distal end 14 of the tube 3 along the clearance of the organ in a given direction, with the device turning around its axis, and also when charging the chamber 6 with another portion of the powder and installing the distal end 14 of the tube 3 in a predetermined location.

 The device is disconnected from the duct 13 and removed from the lumen of the hollow organ.

 After spraying a radiopaque substance for diagnostic purposes, polyposition radiography is performed.

 The powdered drug substance deposited on the inner walls of the hollow organ primarily has a local therapeutic effect, and the diagnostic substance is easily removed naturally from the bronchial tree by coughing.

 This design of the device for spraying powdered substances allows you to accurately and evenly spray them on the walls of the hollow organs and obtain data on early relief and topographic and anatomical changes, for example, the bronchus wall, both its inner surface and indirectly the entire wall. (56) Copyright certificate of the USSR N 1503827, cl. A 61 M 15/00, 1989.

Claims (1)

 A device for spraying powdered substances, for example, radiopaque, during bronchoscopy, containing a block for pumping air, a housing with a cylindrical chamber for powder with inlet and outlet openings and a tube for supplying the powdered substance into the spraying zone, characterized in that, in order to increase the accuracy of the supply and uniform distribution of the powdery substance on the inner walls of the hollow organ, a hollow handle with an opening in the side wall for regulation and a tube for connecting the air injection unit, the chamber is detachable, connected to the handle cavity with an L-shaped spiral channel and separated by a valve from a conical adapter connected to a powder supply pipe, the distal end of which is made with two oppositely located holes in the side wall and a radiopaque tip material.

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