FR2493708A1 - Appts. for preparing solns. for physiological injection - to automate mixing and transfer from remote control - Google Patents

Abstract

Equipment for blending and transferring fluids for surgical insemination incorporates separate reservoirs for concentrated reagents, diluents and mixts. derived therefrom, the transfers from one reservoir to another and to an injection nozzle which may also serve as a drain. Transfers are effected by pneumatic pressure from a suitable bottle or pump, the relevant valves being controlled from an integral switchboard. Pref. the mixts. can be prepd. or moved using a portable slave switchboard which can be adjacent to the patient. Opt. the reservoirs are equipped with means for heating, cooling and/or stirring. Used for convenience of preparing e.g. barium soups of suitable concn. for direct flooding or coating of internal organs prior to radiographic scanning. Avoids direct manual manipulation.

Description

 The present invention relates to an apparatus for preparing a treatment product intended for injection into the body of a patient.

 It is often necessary to inject a treatment product into the body of a patient. For example, to perform a radioscopic or radiographic examination of the intestine of a patient, it may give this organ a certain opacity to X-rays to allow this organ to be distinguished on the background of the screen or x-ray.

 For this, we use a liquid which is usually a barium solution, which is relatively opaque to them X-rays.

This barite solution is injected into gravity by dane @@@ nt @tin.

 At the end of the @adiography, this liquid is natively evacuated from the @@@ ri @@ e.

 However, recent @ radiography and x-ray radiography consist of patient preparation so as to allow a more precise analysis. @@ uses the process known as @@ do @ sle coniraste ". According to this process, a baryte p @@@@@@ tel @@@ is injected into the testan, and we leave product @@ deposit @ @@@@ an @ @@ @@@ a long time on the walls of the in @ est @@. @@@@ on @@@@@@@ l @ @@@@ id @ and we inject a gas under pr @@@@@ @@@ ns intes @@@@ @@@ give it its shape. This process of @ na @@ @ @@@ par @ i @@ @@ a @@@@ in @@@@ essant but lss operations de @@@ @@ ation. @@ @@@@@ @@ @@@@@@ ely delicate and complex because of @@ @@@ trè @@@@ té ut @ lisés a @ tuellement.

 The present invention @ aims to create a device allows @@ ant to prepare @@ pa @@@@ nt @t @@ inject a treatment liquid which is recovered, with simple means, and by recovering almost all liquid, without loss requiring cleaning, etc.

 To this end, the invention relates to an apparatus for the preparation of a treatment sol intended for injection into the body of a patient, an apparatus characterized in that it comprises one or more @uves of product to be diluted, one or more openings of diluent and u @ e or several mixing vessels @@@ if @@ a vessel intended for collecting @ the discharges, these differents being @@@@@@@ being connected @ s between alles and to the injection probe '@@@ as well as to the @uve la r @@@@, @@@ @@ i @ d de @@ mande centrale @@@@@ e to a control and @@@ @@@ @@@ as well as a pressurized gas circuit provided with a controlled distributor, capable of supplying pressurized gas selectively to one or more of the hermetic tanks, depending mixtures or products to be injected.

 With this device, the operator can prepare the organ (intestine) to be treated, using a washing liquid and then aspirate again, then inject the treatment liquid, either in the form of a diluted mixture, or under the form of the pure or almost pure product.

 Finally, the operator can, depending on the reactions of the organia @ e, and in particular during muscle contrac @ ions or spasms, introduce via the intermediary of the probe, calming or other products.

 The operator no longer has to @@@@@@@ liquids @ those @ @ i are for the most part contained in hermetically sealed tanks, @@@ mées, and the reject liquids are collected in a tank intended for this purpose.

 Finally, the source of gas which propels liquids both to make melanses and to injure them, is also @@ i @ isized to inflate the intestine of the patient, after having d @ p @@ é su @ the wall of the intestine the opacifying product or more generally the treatment product.

 The different dosages can be calculated using the @@@@ @ @ @ @@@@, e @ function of the @@ rasteries of the products @ @@ des mé @@@@ itities of treatment, @u of preparation to @@@ ectu @@.

 The @@ seems of the cycle can also be done automatically. when it comes to a standardized treatment or which must @@ separate from several patients @ @ the defined program @@ mainly the concentrations and the volumes of the products @ @ to inject as well as the moment of the injection the duration of stay of the product in the organi @ me.

 The central control unit 12 can also store certain inst @ uctions, to keep them for the duration app @ o @@ iee. @ 'is thus that if the operator plans to carry out the same processing, partoulier in s @ i, on several successive patien @@, he will be able to record the data of s @ n program in unit 12 and by simple command , as @ u @@@ the deseulenent of @@ even ms p @@@@@@@ of treatment for ch @@@@ @@@ @@ tenante @@ ccessifs.

For a series of following patients, he can modify the program or the concentration of the products and carry out by a simple order, each time, the corresponding treatment
The present invention will be described in more detail with the aid of the accompanying drawings, in which
- Figure 1 is an overall diagram of the installation
- Figure 2 is a perspective view of a first embodiment of an apparatus according to the invention;
- the. FIG. 3 is a simplified diagram of the apparatus showing the phase of preparation of the treatment liquid
- Figure 4 is a simplified diagram similar to the previous one, showing the patient preparation phase
- Figure 5 is a simplified diagram similar to the previous one, showing the product injection phase
- Figure 6 is a simplified diagram similar to the previous one, showing the rinsing phase of the piping;
- Figure 7 is a diagram similar to the previous showing the emptying phase of the machine.

 According to FIG. 1, the apparatus for preparing the injection of a treatment liquid consists of a tank I containing undiluted or slightly diluted treatment liquid, a tank 3 containing the diluent and a tank 2 intended to receive liquid to be diluted and diluent to prepare the treatment product.

 The device also includes a tank 4 receiving the discharge liquids.

 The passage of liquids from one tank to another or to the probe 7 is carried out by a pressurized gas introduced into the tanks 1, 2, 3, which are sealed. This pressurized gas, for example carbon dioxide, is supplied by a source of carbon dioxide 6 such as a reservoir, to be distributed between the various tanks and as required by a distributor 5 controlled from the control unit 12 , itself connected to a control 13 fixed on the device or to a remote control 14 for controlling the device remotely.

 This device comprises a probe 7 represented diagrammatically and a device 8 making it possible to optionally inject an additional product, such as a painkiller or the like, depending on the reactions of the patient or the body during the injection.

 The tanks 1, 2, 3 are based on preparation devices 9, 10, 11 which can be heating or cooling and include a magnetic stirrer drive device placed inside the tanks.

 The tanks are connected to each other, to the distributor 5 and to the probe 7 by various pipes.

 Line L1 connects tank 1 and tank 2 and allows the introduction of liquid from tank 1 into the mixing tank 2.

Line L2 performs the same function between the diluent tank 3 and the mixing tank 2; it allows the introduction of diluent into the mixing tank 2.

 The pipe S1 is the outlet pipe from the tank 1, which goes to the probe 7. The same applies to the pipe S2 corresponding to the tank 2 and to the pipe S3 corresponding to the tank 3.

 These pipes come together in a pipe S4 connected to the probe 7. The pipe S4 is also connected to the injection device 8.

 Finally, the tanks I, 2, 3 are connected to the rejection tank 4 by the lines R1, R21 R3. The probe 7 is connected to the tank 4 by the line R4.

 Finally, the distributor 5 is connected respectively to the tanks 1, 2, 3 by lines G1, G2, G3. The distributor 5 also includes a line G4 going directly to the probe 7 to allow the injection of gas.

 The command 13 includes various keys 131 - 137 for controlling the different functions or cycles of the processing device according to the invention.

 The button 131 controls the passage of the liquid from the tank 1 to the mixing tank 2.

 The button 132 controls the passage of the diluent from the tank 3 to the tank 2.

 The button 133 controls the agitator of the mixing tank 2.

 Key 134 controls filling by diluting from tank 3.

 Key 134 controls the filling of product with tank 1.

 The button 135 controls the injection of the diluent from the tank 3 to the probe 7.

 The key 136 controls the suction of the liquid from the probe 7 to the rejection tank 4.

 The key 136 controls the injection of the product from tank 2 to the probe.

 Key 137 controls the injection of product from tank 1 to probe 7.

 The remote control 14 makes it possible to use the treatment device according to the invention, which must be in the vicinity of the patient, for example during an radiographic or radioscopic analysis of the patient. For this, the operator uses the remote control 14.

 Figure 2 is a perspective view of an embodiment of a machine according to the invention, as described above in Figure @, The apparatus according to Figure 2 consists of a frame in the form of C, 20, having a base 21, a projecting upper part 22, as well as a vertical wall 23. The tanks l, 2 are placed in the opening delimited between the upper part 22 and the base 21. The front face of the upper part 22 carries pressure gauges 24 @ indicating the pressure prevailing in some of the tubes, a display panel 25 as well as the control 13 constituted, for example, by an alpha-numeric keyboard.

 The assembly described above @ essus rests on the tray of a low piece of furniture 26 containing the tanks 3 and 4. In fact, these tanks must have a certain dimension, one because the diluent such as water, for example, is used for all kinds of patient treatment and cleaning of the installation between two patients; the rejection or evacuation tank must have a capacity substantially equal to that of the diluent tank, since the diluent with or without addition of product is recovered at the end of each treatment.

 According to Figure 3, the apparatus 20 shown partially allows to perform the preparation of the barium suspension. This preparation is carried out by dosing 3'water in tank 2 for this, we start the transfer from tank 3 to tank 2 by pressing the button 132. We also dose the contrast agent in tank 2; the transfer from the tank 1 to the tank 2 is controlled by the button 131. Finally, the stirring is controlled using the button 33.

 According to Figure 4, the patient is prepared, that is to say the enema. Water is injected from the tank 3 to the probe 7 by pressing the button 135. It is also possible to optionally inject an additional product via the device 8. In a second step, it is sucked in by carrying out the transfer of the probe 7 towards the tank 4 by pressing the key 136 of the command 13. It is possible to repeat this cycle of operations as many times as is necessary to take the radiographic images.

 According to FIG. 5, the diluted contrast product is injected from the tank 2 to the probe 7, this transfer being controlled by the button 136. It is also possible to control the transfer of the liquid from the tank 1 to the probe 7 by controlling the button 137. In a second step, the suction of the superfluous contrast product is controlled, by transferring the probe 7 to the rejection tank 4 by acting on the button 136.

 According to FIG. 6, the tubing is rinsed between each patient. Thus, the passage of the liquid from the tank 3 to the probe 7 is controlled by pressing the button 135, then the transfer of the liquid from the probe 7 to the rejection tank 4 by acting on the button 136.

 Using a key on the remote control 14, the injection of gas is controlled (FIG. 6). Remote control 14 is used because this operation is only carried out under the control of the televised radioscopl @.

 Finally, according to FIG. 7, the machine is emptied; for this, the automatic draining of the tank 1 is carried out by transferring the liquid from the tank 3 to the tank 1, then from the tank 1 to the tank 4. The tank is then automatically emptied by transferring the tank 3 to tank 2, then from tank 2 to tank 4. Finally, automatic draining of tank 3 is carried out by transfer from tank 3 to tank 4.

 The various pipes connecting the mixing or evacuation tanks to each other or to the various other organs of the device are provided with non-return valve to prevent the backflow of liquid or gas towards unsuitable elements.

Claims (2)

 1) Apparatus for preparing a treatment solution intended to be injected into the body of a patient, apparatus characterized in that it comprises one or more tanks of product (1) to be diluted, one or more tanks of diluent (3) and one or more mixing tanks (2) as well as a tank (4) intended to collect the rejects, these different tanks being interconnected 1L1, L2) and to the injection probe (7, Sil S2, S3) as well as the reject tank (Rç, R2, R3), a central control unit (t2) connected to a control (13) and to a remote control (14) as well as a gas circuit under pressure (6, G1, G2, G3) fitted with a control distributor (5) capable of supplying pressurized gas selectively to one or more of the hermetic tanks (1, 2, 3), depending on the mixtures or products to inject.  2) Apparatus according to claim 1, characterized in that each of the tanks (1, 2, 3) containing the products to be injected, is equipped with a device (9, 10, 11) for stirring and heating and / or cooling.