Pressure injection apparatus

[Detailed Description of the Invention]

(Field of the Invention) The present invention relates to a pressure pouring device provided with Borda holding an injector, and the advance means that pushes out the contents from an injector. (Conventional technology) In the case of the pressure pouring device used in order to carry an injection into a patient's inside of the body, from the injector containing a fluid, the contents are pushed out continuously and the pushed-out fluid is supplied to a patient via a hose. A publicly known pressure pouring device (Japan patent No. 1,407,402) about a pressure pouring device provided with the holder holding an injector, and the advance means which pushes out the contents of the injector, It has the housing of the shape of a long and slender dupe to which the 1st holder for holding Sorinda of an injector was fixed. This housing had axis driving and is prolonged in accordance with an axis of a housing from that end in a slide part which can move. the slide part -- a piston lot of an injector -- Work -- it has the 2nd holder attached like 11'1 Mellow. By rotating the axis arranged in a housing, a slide part is linearly moved to a housing. Thereby, the contents should be pushed out from the injector attached to the pressure pouring device. The drive of an advance system should be made with an electric motor. Thing Are known by which a limit switch or early alarm Suzothi was attached to the pressure pouring device. responding, if such a switch arrives at a predetermined advance position, and generating alarm Or -- or an injector -- empty -- or a device is made to turn off when it almost becomes empty However, excessive cost starts such a limit switch and periodical Dieck of whether these are functioning completely is still more nearly required. Since the cent of the whole operation is beforehand carried out so that it may happen without surveillance, the publicly known pressure pouring device must accept the demand of the high correctness about an advance means and an electric actuator. so, the pouring rate set once should be correctly Holding(ed) also in future operations -- it must be guaranteed in things. Moreover, the variation and individual specificity by deviation at the time of manufacture should not exist. The object of the present invention is to provide pre Ambur of the 1st paragraph of a claim with a pressure pouring device of a model of a statement. The whole pouring operation is supervised and controlled by ensuring strict observation of a pouring state. The feature of the present invention indicated in the 1st paragraph of the range of the application for patent is solved in the above-mentioned problem. In the pressure pouring device of the present invention, course sensor Monitoring of the moving trucking of the advance means by the contents being pushed out from an injector or the whole movable holder is carried out. The signal of position data is sent to the control means which performs position control according to a predetermined program or external measurement data. and -- the extrusion state of the contents of the injector is supervised in every stage -- So -- it detects whether the value which shows the position of that is adapted for the position of a request of the moment, and is sent to the control means which amends as a signal, and if required, forward speed is increased or decreased temporarily. then, the pouring rate of following the set-up schedule by the method of time control or quantity control -- for example, decrease continuously -- it becomes possible to change a primary high injection rate. On the other hand, advance may be controlled again in response to the external measurement data determined, for example according to the effect of grouting chemicals. When an antihypertensive is prescribed for the patient, the pouring rate is based on a patient's moment blood pressure, and is changed. A specific pouring rate or the thing to which it is set beforehand and for which it does not excel and come out, maintenance of the above-mentioned pouring rate is supervised correctly, and the signal of the pouring rate is sent to a control means is an especially advantageous point. The variation which may happen is amended by the known control standard. Preferably, a course sensor is an absolute value type and it detects the position of the 2nd holder to which it is decided and an injector piston rod is moved about 1 This reference position. Since the nil state position of the 2nd holder in which each absolute position of the 2nd Borda is detected, and the contents of the injector are pushed out completely is a prescribed position, the limit switch for [ for early alarm generating ] limit cutting of an actuator is unnecessary. The nil state position to the type of each injector is inputted into the input means of a control means by hand. It may be attached to a pressure pouring device by a nil state, and a nil state position may be inputted. Depression of a Bunyu button will store each position of the 2nd holder in a control means. Then, it is full of an injector by a piston being pulled from a cylinder. The consequential position of the 2nd holder gives the information about the volume of the fluid which it is full of with (being related with the sectional view of an injector), and an injector. A control means may supervise an injector, in order to detect the stop of pouring operation. Still the tube attached to the injector Reach ' Is that this becomes later than advance of an injector or a predetermined value, supposing future advance is forbidden, in spite of not having carried out, it is detected [ it bends, for example, and ] by the nil state position, and searches for the operation of alarm. For this reason, a load measuring means is not required because of detection of a stop of pouring. Hereinafter, with reference to an attached drawing, the example of the present invention is described in more detail. An attached drawing shows the outline section of the direction of an axis of a pressure pouring device. The above-mentioned pressure pouring device contains housing IO which stores motor gear unit 11 which drives GIF 14 joined to the end part of spindle 16 with a screw thread by gear 12.13 via bonding link 15. Near the above-mentioned end part, spindle 16 with the above-mentioned screw thread is supported by bearing 17 provided in the wall of housing IO. Spindle 16 with a screw thread is projected to a way outside housing 10. An end of the side opposite [ the ] to is supported by bearing 18 of block part 19 united with housing 10 by bridge (not shown). Slide part 20 which has a form of spindle Nut is guided at spindle 16 with a screw thread. It carries out in the inner side, and a part screws with the outside screw part of spindle 16 with a screw thread. Since the above-mentioned slide part 20 is supported so that it may not rotate, if spindle 16 with a screw thread rotates, slide part 20 will move in the back direction of an axis. instead of above, element ll~20 should be designed like the pressure pouring device according to the Japan patent No. 1,407,402 again -- the advance means may be formed. The 1st holder 21 is fixed to housing 10, and necklike part 27 of cylinder 23 of injector 22 is fixed to it with the 1st holder 21. The end of injector lot 24 is placed into the 2nd holder 25 attached to slide part 20 at one. Into notes and cylinder 23 of Elbow, injector 22 adheres to the above-mentioned rod 24, and is provided with piston 26 which pushes out the fluid contained inside an injector to the tube which may be connected from outlet 27. According to the present invention, course sensor 28 should be formed in order to detect the position on the axis of Schley r' part 20 about housing IO or the 1st holder 21. The above-mentioned course sensor 28 consists of scan head 3o which can move along with rail 29 and is completely attached to the 2nd holder 25 simultaneously with housing 10 and coding rail 29 prolonged between block parts 19. Scan head 30 has a plurality of sensors to which it enabled it to move each along the signal track of signal rail 29. Signal rail 29 has a signal track scanned magnetically or optically. The information about the position of scan head 30 of the direction of an axis of signal rail 29 is acquired from the combination of the signal of the sensor in scan head 30. - Knee" In more detail, position sensing device 28 is equivalent to model 500 by Mitoyo factory incorporated company, and there is. The resolution of such a position sensing device is 0.01.mm. the appearance Horn signal of scan head 30 which shows the position signal of the 2nd holder 25 is supplied to control means 3I provided with the microprocessor which reacts and appears in a position signal and controls the motor of motor gear unit 11. The internal cross-sectional area [ in / by keyboard 31a of control means 31 / pouring operation ] of Fringe 23 of an injector, Various parameters like [ as that of above-mentioned Borda 25 when pushed out completely, the volume of the fluid in an injector, and the nil state position of an injector, i.e., the contents of the injector, ] [pi are inputted into the above-mentioned microprocessor. A desired pouring rate, i.e., the fluid volume pushed out per unit time, is inputted, and a different pouring rate of some continuous in one and the same distance can also be inputted. A microprocessor calculates each pouring rate from input data. It should be detected whether by timing, they are each actual pouring rate or a desired value. Motor speed should be corrected according to the variation which arises as a result. be carried out by control device 31 -- control is inputted and is performed based on either of the volume data which is the products of the course data or the course given by scan head 30, and the cross-sectional area of Fringe 23 of an injector. Displaying means 31b of control means 31 shows the fluid volume already pushed out from the injector, or the volume which remains in the injector again. Still effective Victim size time may be displayed. The nil state position shown with scan head 30 or the 2nd holder 25 when the contents of injector 22 are pushed out completely, be made to insert in in Borda 21 and 25 with the piston advanced to the injector of the empty which carries out and does not contain fluid at all which may be inputted into keyboard 31a by hand -- it may be inputted in the state. The position of Borda 25 in such a state is pressing each key, and is stored in control means 31. Then, a pressure pouring device is used for slide part 20 pulling rod 24 and filling a fluid in injector 22. And the control means has the command about the volume of the fluid filled in the injector. on the other hand, be stored in control means 31 under instructions -- use for pushing out the contents from the injector of a known size -- things are possible. Since it will be exchanged in a new injector if required if a piston arrives at the position where only a specific distance preceded the nil state position of the injector, alarm is operated by control means 31 and it warns the work staff of pouring distance being completed soon. Since early alarm can make it able to operate and a To be position can be chosen, it decides on the remaining specific pouring time. In this case, the position where early alarm should be emitted changes with forward speed. Control device 31 is controlled so that forward speed or a pouring rate does not become smaller than the predetermined minimum. For example, if the latter does not reach a predetermined value since the tube connected to injector 22 is twisted for other reasons or blockades, the minimum speed with an insufficient control means is detected, and alarm is operated. It may be connected to a plurality of pressure pouring devices which have course sensor 28, respectively, and only one control means may be operated. This method can harmonize mutually and can operate each pressure dE person device. This method is suitable when some pourings must carry out to a one person in the quantity of a specific rate simultaneous. When one pressure pouring device does not operate well, all the pressure pouring devices stop. However, it is also possible for pouring solution or a patient to be medicated by operating all the pressure pouring devices and protecting the rate of specific predetermined Electricity correctly. one of some pressure pouring devices -- it uses as a parent device -- having -- the good device remaining on the other hand, It can align with a generating To shake course signal by the course sensor of a parent device, and can also use the fluid of electricity-receiving for medication for very exact 1 time even from a lot of volume of 7 colors of duties however about the pressure pouring device of the present invention which may be used as a child device. Since the high accuracy of this Nostem is obtained from a course sensor, the demand of the correctness concerning advance and a driving means is natural.

[Brief Description of the Drawings]

An attached drawing is a schematic structure figure showing the example of the pressure pouring device of the present invention. 11~20 ... The component of an advance means, 21 ... Holder, 22 - Injector, 28 - course sensor, 31 and a control means. Applicant for a patent Hay Brown Melzengen Aktiengesellschaft