SU1593662A1 - Device for injecting preparations in lymphatic vessels - Google Patents

Abstract

The aim of the invention is to improve usability by providing periodic visual monitoring of the flow rate of the fluid. The indicator 4, the flow velocity of the fluid, using two four-way valves with hermetic cavities through the overlapping flow channels, connects the transparent tube 6 with the capsule 9 to the flow of fluid from the elastic chamber 2 into the catheter 5 so that either the reciprocating movement of the capsule 9 in the tube 6 is provided or the movement of fluid, mine transparent tube 6. 4 Il.

Description

The invention relates to medical technology, in particular to devices for B1we-Atenium fluids into lymphatic vessels for diagnostic, therapeutic or research purposes.

The aim of the invention is to improve the user-friendliness by ensuring that the fluid flow velocity is periodically and visually monitored.

Figure 1 shows the proposed device; figure 2 - indicator of the flow rate of the fluid; on fig.z section aa in figure 2; on fig.4 - section bb in Fig.2.

The device comprises a housing 1 in which an elastic chamber 2 is placed. Connected to the fluid flow regulator 3, a fluid flow velocity indicator 4 and a catheter with a needle 5. The fluid flow velocity indicator 4 has a transparent tube 6, on which the measuring section 7 is highlighted. Section 7 is selected from the average expected flow rate of the fluid and the internal diameter of the tube. The test liquid 8 flows inside the tube b, which acts on the capsule 9 in the forward and reverse direction. Capsule 9 can be made in the form of a non-deformable floating body (a bubble, a thin-layer shell with air, an elastic sphere, etc.). The forward and reverse movement of the capsule 9 is provided by the indicator 4, which also consists of two four-way valves 10 and 11 mounted on the same shaft 12 and in the same housing 13. The shaft 12 has two hermetic chambers 14 and 15 from different sides, at the end which have two radial distribution holes 16 and 17, made on the same generator. On the shaft 12, there are a switching handle 18, as well as outlet radial holes 19, opposite to which a groove 20 is made in the housing 13. A fitting 21 for exiting the liquid is also located there. At the opposite end of the housing 18, there is an inlet fitting 22. At the location of the distribution openings 16 and 17 in the housing 13 there are three pairs of mutually perpendicular flow paths 23 and 24, 25 and 26, 27 and 28 with fittings for connecting pipes. The flow channels 23 and 24 have a diameter less than the diameter of the capsule 9. They are connected by a transparent tube 6 and have branches 29 m 30 with fittings. The tube 31 is intended for direct flow of fluid, i.e. The measuring section connects flow channels 25 and 26. There are also tubes 32 and 33 for backflow of fluid that connect flow channels 27 and 28, and branches 29 and 30.

The device works as follows,.

Elastic chamber 2 is filled with a therapeutic or diagnostic drug under pressure. The fluid flow regulator 3 is set to the position corresponding to the expected flow rate, at the same time the fluid fills all connecting piping and begins to flow from the needle 0-5. The fluid flow rate indicator 4 has four switching positions. In the first position, the switch acts as a stop valve and serves to stop the injection both in the operating mode and in the preparatory procedures. The second position is the measurement position of the flow velocity of the fluid in the forward direction. The test fluid 8 enters the inlet fitting 22 and through the hermetic chamber 14, 0 the distribution opening 16 and the flow channel 23 with the fitting adjacent to it enters the tube 6, where in the measuring section 7 it moves the capsule 9. Then the fluid 8 flows into the flow through a channel 24, a distribution hole 17, a sealed chamber 15 and through radial holes 19, a bore 20, an outlet nipple 21 and a connecting pipe into the needle 5. After the passage of 0-thrust 9 of the measuring section 7, the switch is turned into the first or Retie position. In the third position, the test liquid, mine measuring section 7, through tube 31 enters 5 directly into needle 5, namely through distribution hole 16, flow channel 25, tube 31 for direct fluid flow, flow channel 26 into distribution hole 17 and further into needle 5. 0 For the subsequent indication of fluid flow and injection speed, knob 18 is moved to the fourth position, and fluid 8 flows through distribution hole 16, flow channel 27, tube 33 for 5 back flow of fluid, branch 30, flow through the anal 24 into the tube 6, where in the measuring section 7 advances the capsule 9 in the opposite direction and enters through the flow channel 23, the branch 29, the tube 50 32 for the reverse flow of fluid and the flow channel 28 into the distribution hole 17 and further into the needle 5. After measuring handle 18 is transferred to either the first or the third position.

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F o rmula of the invention

Device for administering drugs to the lymphatic vessels, comprising a housing with an elastic chamber placed therein

For a drug and a fluid flow controller, as well as a catheter with a needle, the fluid flow controller is connected to an elastic chamber, characterized in that, in order to improve ease of use by providing periodic visual monitoring of the flow rate of the fluid, a current speed indicator is added to it fluids connected to the catheter and fluid flow controller and

consisting of two four-way valves mounted on one shaft, inside of which two sealed chambers and overlapping flow channels are made, and a transparent tube with a capsule installed with the possibility of reciprocating movement in the tube, while the transparent tube is connected to the cranes through overlapped flow channels and corresponding sealed chambers.

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Claims (1)

Claim A device for injecting drugs into the lymphatic vessels, comprising a housing with an elastic chamber for the drug and a fluid flow regulator, and a catheter with a needle, the fluid flow regulator connected to the elastic chamber, characterized in that, in order to improve usability by providing periodic visual monitoring of the fluid flow rate, an additional fluid flow rate indicator is connected to it, connected to a catheter and fluid flow regulator and 10 consisting of two four-way of canals mounted on one shaft, inside of which there are two sealed chambers and overlapping flow channels, and a transparent tube with a capsule mounted with the possibility of reciprocating movement in the tube, while the transparent tube is connected to the taps through overlapping flow channels and corresponding tight chambers . Fig.Z