JP6379033B2 - Automatic rapid infusion or blood transfusion device - Google Patents

Description

  The present invention relates to an automatic rapid infusion or blood transfusion device into a living body. More specifically, a synchronous alternating type two-cylinder parallel type syringe type pump or a multiple parallel type syringe type pump composed of three or more syringe type pumps, each of which is divided into each of the branched parts. The pump in which each non-branched portion of a Y-shaped branch tube having a reverse one-way valve is connected, and an extension tube having a Y-shaped branch tube or a branch tube having three or more branches at the end Is an automatic rapid infusion or blood transfusion device composed of a circuit comprising an infusion or blood pack connected to each other, and a transfusion or blood transport tube connected to a terminal having a Y-shaped branch tube or a branch tube having three or more branches. Always infuse fluid or blood into the living body in the circuit in one direction toward the living body with precise control of flow rate and fluid pressure. Can, in particular, at the time of hypotension and shock in sudden bleeding and emergency department of surgery, an automatic rapid infusion or transfusion apparatus enables automatic rapid infusion or transfusion.

In medical practice, especially in operating rooms and emergency departments, we often encounter situations where the circulating blood volume is deficient due to sudden bleeding, trauma, etc., resulting in a shock state with decreased blood pressure. In such an emergency, it is necessary to improve the circulatory dynamics by infusing fluids and blood transfusions for a while.
In such a situation, it is most common to perform infusion or blood transfusion while turning a three-way stopcock and moving a slightly larger syringe with human power, so-called pumping (non-patent literature). 1).
However, by continuing this pumping, other important medical activities such as heart massage and tracheal intubation cannot be performed at the same time. Therefore, personnel dedicated to pumping are taken, and other actions require a separate doctor. In order to improve such a situation, a device for automatically performing pumping has been proposed (Patent Document 1).

  As another method, for example, a device for automatically transfusion by pressing a transfusion bag with a positive pressure from the outside has already been put into practical use (Non-patent Document 2). However, the device is large and difficult to operate and move. Furthermore, there is a drawback that putting the transfusion pack into the pressurizing apparatus is a rather complicated operation. Therefore, a smaller device that is smaller and easier to set up is desired.

JP 2004-24476 A

Infusion pump basics and practice, Clinical Engineering Vol.11, No.5, 2000, 371-377 Risk Management for Rapid Transfusion Devices, Medical Instrumentation, Vol. 77, No. 9 (2007), 564-568

  Therefore, the problem to be solved by the present invention is that the operation and movement are easy, the flow rate of the infusion and blood transfusion can be accurately controlled, and the infusion that enables rapid infusion or rapid infusion into the living body automatically. To provide an apparatus.

The present inventor can accurately control the flow rate and fluid pressure of infusions and blood transfusions, and does not require complicated operations such as switching of three-way stopcocks, enabling automatic infusion or rapid transfusion automatically into the living body. As a result of earnest research for the purpose of providing an injecting device, a synchronous alternating two-cylinder parallel type syringe pump capable of repeating reciprocating motion alternately in the opposite direction at the same time, the two-cylinder parallel type syringe Synchronous alternation type two-cylinder parallel type syringe pump in which each non-branched portion of a Y-shaped branch tube having a one-way valve in the opposite direction that is paired with each branched portion is connected to each of the branched pumps, Combines an infusion or blood pack with an extension tube having a Y-shaped branch tube at the end, and an infusion or blood transport tube with a Y-shaped branch tube connected to the end It has been found that an infusion device composed of a circuit can accurately control the flow rate and fluid pressure of infusion and blood transfusion, and is effective for automatically performing rapid infusion or blood transfusion into a living body. Completed.
Also, in order to realize more stable injection, it is composed of three or more syringe-type pumps, each of which is a multiple parallel type syringe-type pump capable of repeating the reciprocating motion while shifting the phase. The pump in which each non-branched portion of the Y-shaped branch tube having a reverse one-way valve paired with each branched portion is connected, and has a branch tube having three or more branches at the end. An infusion device composed of a circuit in which an infusion solution or blood pack to which an extension tube is connected and an infusion solution or blood transport tube to which a branch tube having three or more branches is connected is connected to three or more syringe-type pumps We found that by shifting the phase of the movement cycle, we can ensure more uniform and stable infusion and blood flow and fluid pressure. Akira was completed.
Therefore, the present invention
[1]. Synchronous alternation type two-cylinder parallel type syringe pump that can repeat reciprocating motion alternately in the opposite direction at the same time, and is paired with each branched part of the two-cylinder parallel type syringe type pump Synchronous alternating two-cylinder parallel type syringe pump connected to each non-branched portion of the Y-shaped branch tube having a one-way valve in the reverse direction, an infusion solution connected with an extension tube having a Y-shaped branch tube at the end Or an automatic rapid infusion or blood transfusion device comprising a blood pack and a circuit comprising an infusion or blood transport tube with a Y-shaped branch tube connected to the end,
Each of the branch portions of the Y-shaped branch tube connected to each of the synchronously alternating two-cylinder parallel type syringe pumps has a branch portion of each of the terminal Y-shaped branch tubes connected to the infusion solution or blood pack. Alternatively, it is alternately connected to each of the branch portions of the terminal Y-shaped branch tube connected to the blood transport tube,
When the infusion or blood is injected into the living body through the infusion or blood transport tube from one of the synchronous alternating two-cylinder parallel syringe pumps, at the same time, from the other pump moving in the opposite direction When an infusion or blood is inhaled from an infusion or blood pack and conversely, from one pump, infusion or blood is inhaled from an infusion or blood pack, the infusion from the other pump moving in the opposite direction at the same time Alternatively, infusion or blood can be injected into the living body via a blood transport tube, and the infusion or blood can always be injected into the living body in one direction in the circuit.
An automatic rapid infusion or automatic rapid blood transfusion device into a living body,
[2]. It is composed of three or more syringe-type pumps, each of which is a multi-parallel syringe pump capable of repeating the reciprocating motion while shifting the phase. A plurality of parallel type syringe pumps connected to each non-branched portion of a Y-shaped branch tube having a one-way valve in the opposite direction as a pair, and an extension tube having a branch tube having three or more branches at the end An automatic rapid infusion or blood transfusion device composed of a circuit including a connected infusion or blood pack and an infusion or blood transport tube connected to a branch tube having three or more branches at the end,
Each of the branch portions of the Y-shaped branch tube connected to each of the plurality of parallel type syringe pumps has a branch portion of a branch tube having three or more branches connected to an infusion solution or blood pack, and an infusion solution or It is alternately connected to each of the branch portions of the branch tube having three or more ends connected to the blood transport tube,
The infusion or blood is injected into the living body via the infusion or blood transport tube from any of the multiple parallel type syringe pumps, and the infusion or blood is inhaled from the infusion or blood pack from other pumps by shifting the phase. On the contrary, from one of the pumps, the infusion or blood is inhaled from the infusion or blood pack, and the phase is shifted from the other pump and the infusion or blood is injected into the living body via the infusion or blood transport tube. Or blood can always be injected into the body in one direction in the circuit,
An automatic rapid infusion or blood transfusion device into a living body;
[3]. A heating device for bringing the infusion solution or blood to an appropriate temperature outside the outer cylinder portion of the syringe type pump or in the circuit of the portion before the infusion solution or blood is sucked into any of the syringe type pumps Or an automatic rapid infusion or blood transfusion device according to the above [1] or [2], which is provided with a cooling device;
[4]. Any one of [1] to [3] above, wherein two or more disks are attached to the syringe inner cylinder portion of the syringe-type pump in order to prevent the infusion or blood injected into the living body from coming into direct contact with the outside air. Automatic rapid infusion or blood transfusion device as described in
[5]. The automatic rapid infusion or blood transfusion according to any one of the above [1] to [4], wherein a compliance chamber for preventing problems caused by applying an excessive negative pressure is attached in front of the suction part of the syringe pump. An apparatus; and [6]. The present invention relates to an automatic rapid infusion or blood transfusion device according to any one of [1] to [5], wherein a bubble detection sensor for preventing bubble feeding is provided outside the syringe pump.

An automatic rapid infusion or blood transfusion device according to the present invention is a synchronous alternating two-cylinder parallel type syringe pump, and each of the two-cylinder parallel type syringe type pump has a reverse direction paired with each branched part. Synchronous alternating type two-tube parallel type syringe pump in which each non-branched portion of the Y-shaped branch tube having a directional valve is connected, an infusion or blood pack in which an extension tube having a Y-shaped branch tube is connected to the end, When injecting infusion or blood from one pump of a synchronous alternating two-cylinder parallel syringe pump by combining an infusion or blood transport tube with a Y-shaped branch tube connected to the end At the same time, infusion or blood is sucked from the infusion or blood pack from the other pump moving in the opposite direction, and conversely, one pump When you are inhaling Luo infusion or blood, at the same time, issues Note the other infusion or blood from the pump to move in the opposite direction, always the infusion or blood can flow in the direction of the body. Therefore, the fluid pressure of the infusion or blood, that is, the internal pressure, the flow rate can be accurately and strictly controlled. For example, the internal pressure can be continuously monitored by monitoring the pressure applied to the syringe pusher, Rapid injection is possible at high flow pressure without requiring complicated operations such as switching the three-way stopcock. In addition, the device of the present invention can be miniaturized and can move with the patient. Furthermore, it is possible to automate infusion or rapid infusion of blood by automatically operating a synchronous alternation type two-cylinder parallel type syringe pump without requiring a person to monitor the apparatus.
Further, it is composed of three or more syringe-type pumps, each of which is a plurality of parallel-type syringe-type pumps capable of repeating reciprocating movements with different phases, and each of the pumps is provided with a pair of reverse one-way valves. The Y-shaped branch tube having the pump connected thereto, the transfusion or blood pack having the extension tube having the branch tube having three or more branches at the end, and the branch tube having three or more branches at the end were connected. An automatic rapid infusion or blood transfusion device composed of a circuit combining infusion or blood transport tubes is more uniform and stable infusion by shifting the phase of movement of three or more syringe pumps to prevent pulsating flow Or blood flow and fluid pressure can be secured.

FIG. 1 shows a synchronous alternation type two-cylinder parallel type syringe pump (1 and 2), and each of the two-cylinder parallel type syringe type pump (1 and 2) has a reverse pair that is paired with each branched part. Synchronous alternating two-cylinder parallel syringe pump (1 and 2) connected to each non-branched part of the Y-shaped branch tube (3 and 4) having a one-way valve in the direction, Y-shaped branch at the end Schematic showing an automatic rapid infusion or blood transfusion device of the present invention, which combines an infusion or blood pack 13 to which an extension tube 11 having a tube 9 is connected, and an infusion or blood transport tube 12 to which a Y-shaped branch tube 10 is connected at the end. FIG. In FIG. 1, an infusion or blood is poured from one pump 1 of a synchronous alternating two-cylinder parallel syringe pump toward a patient 14, and at the same time, an infusion or blood is infused from the other pump 2 that moves in the opposite direction. Or the state which inhales from the blood pack 13 is shown. FIG. 2 is a schematic view showing the automatic rapid infusion or blood transfusion device of the present invention as in FIG. In FIG. 2, infusion or blood is poured from one pump 2 of a synchronous alternating two-cylinder parallel syringe pump toward the patient 14, and at the same time, infusion or blood is infused from the other pump 1 that moves in the opposite direction. Or the state which inhales from the blood pack 13 is shown. FIG. 3 is a schematic diagram showing the function of a one-way valve in a Y-shaped branch tube having a reverse one-way valve paired with each branched portion used in the automatic rapid infusion or blood transfusion device of the present invention. is there. FIG. 4 shows a plurality of syringe-type pumps (15, 16 and 17), each of which is a multiple parallel type syringe-type pump capable of repeating the reciprocating motion while shifting the phase. The pump connected with a Y-shaped branch tube (18, 19 and 20) having a reverse one-way valve, an infusion solution or blood pack connected with an extension tube 11 having a branch tube 22 having a trifurcated branch at the end 13 is a schematic view showing an automatic rapid infusion or blood transfusion device according to the present invention, which is composed of a circuit in which an infusion solution or a blood transport tube 12 connected with a branch tube 21 having a branching branch having three branches at the end and 13 is connected. FIG. 5 shows a plurality of syringe-type pumps (23, 24, 25 and 26), each of which is a multi-parallel syringe-type pump capable of repeating the reciprocating motion while shifting the phase. The pump connected with a Y-shaped branch tube (27, 28, 29 and 30) having a counter-directional one-way valve connected thereto, and the extension tube 11 having a branch tube 32 having four branches at the end were connected. It is a schematic diagram showing an automatic rapid infusion or blood transfusion device of the present invention, which is composed of a circuit combining an infusion or blood pack 13 and an infusion or blood transport tube 12 to which a branch tube 31 having four branches at the end is connected. is there. FIG. 6 is a schematic view showing that the heating device 33 or the cooling device 33 is provided outside the outer cylinder portion of the syringe of the syringe type pump of the automatic rapid infusion or blood transfusion device of the present invention. FIG. 7 is a schematic view showing that the gasket 34 of the syringe type pump of the automatic rapid infusion or blood transfusion device of the present invention, that is, the disk portion 34 of the inner cylinder is arranged in a double manner. FIG. 8 is a schematic view showing that the compliance chamber 35 is arranged on the suction side to the syringe type pump in the intermediate portion of the extension tube 11 connected to the blood pack 13 in the automatic rapid infusion or transfusion device of the present invention. It is. FIG. 9 shows an automatic rapid infusion or blood transfusion device according to the present invention, in which a laser light generator or ultrasonic generator 36 and a detector 37 are provided outside the outer cylinder portion of a syringe-type pump on the infusion or blood injection side. It is a schematic diagram which shows.

Hereinafter, the automatic rapid infusion or blood transfusion device of the present invention will be described in detail with reference to the drawings.
1 and 2 are schematic views showing an automatic rapid infusion or blood transfusion device of the present invention. 1 and 2 in FIG. 1 and FIG. 2 show one pump of the synchronous alternation type two-cylinder parallel type syringe pump and the other pump. The synchronous alternating two-cylinder parallel type syringe pump used in the present invention is composed of two syringe-type pumps arranged in the same casing or two or more individual casings, and each syringe-type pump operates individually. Each of which can be moved forward and backward independently, can measure and monitor pressure, and is controlled to perform synchronous motion when they are needed. A synchronous alternation type two-cylinder parallel syringe pump that can reciprocate in the opposite direction is preferable.
3 and 4 show the Y-shaped branch tube which has a reverse direction one-way valve paired with each branched part connected to the syringe pump. Reference numerals 5, 6, 7 and 8 denote one-way valves provided at the branched portions of the Y-shaped branch tubes 3 and 4, respectively. Reference numerals 9 and 10 denote Y-shaped branch tubes having no valve such as a one-way valve. Reference numeral 13 denotes an infusion or blood pack, and 11 denotes an extension tube connected to the infusion or blood pack. The extension tube has a Y-shaped branch tube 9 having no valve such as a one-way valve at the end. Reference numeral 12 denotes an infusion or blood transport tube, and the infusion or blood transport tube has a Y-shaped branch tube 10 having no valve such as a one-way valve at the end. The branch portions of the Y-shaped branch tubes 9 and 10 are alternately connected to the branch portions of the Y-shaped branch tubes 3 and 4 each having a one-way valve connected to the syringe pump.

  As shown in FIG. 3, the one-way valve in the Y-shaped branch tube connected to the syringe-type pump and having a reverse one-way valve at each branched portion is a one-way valve of A. However, infusion or blood can pass in the direction from a to b, but infusion or blood in the direction from b to a cannot pass. In the case of the one-way valve B, infusion or blood can pass in the direction from b to a, but infusion or blood in the direction from a to b cannot be made.

  In FIG. 1, the piston of the pump 1 is pushed to push infusion or blood, while the piston of the pump 2 is pulled at the same time to draw infusion or blood from the infusion or blood pack 13. At this time, the one-way valves 6 and 7 are opened, the one-way valves 4 and 5 are closed, and infusion or blood flows out from the pump 1 in the direction of the arrow toward the patient 14, while at the same time, the pump 2 in the opposite direction. Infusion or blood flows from the direction of the arrow. In contrast, in FIG. 2, the piston of the pump 2 is pushed to push out the infusion or blood, while the piston of the pump 1 is pulled in the opposite direction at the same time to draw in the infusion or blood. At this time, the one-way valves 4 and 5 are opened, the one-way valves 6 and 7 are closed, and the infusion or blood flows from the pump 2 toward the patient 14 in the direction of the arrow, whereas at the same time, the infusion or blood pack 13 Infusion or blood flows in the direction of the arrow toward the pump 1.

By adopting the configuration shown in FIGS. 1 and 2, infusion or blood can always be injected in the direction of the patient in the circuit. By synchronizing the pumps 1 and 2 of the synchronous alternation type two-cylinder parallel-type syringe pump while moving them in opposite directions, and controlling the pressing and pulling pressures of the pumps 1 and 2, The flow pressure, that is, the internal pressure and the flow rate can be strictly defined, and a high flow pressure can be ensured even when the resistance of the circuit is high.
As shown in FIGS. 1 and 2, the two syringe pumps reciprocate in the opposite directions, so that rapid infusion or blood transfusion can be continued almost continuously, not intermittently. In addition, the apparatus of the present invention can variably set the flow rate, and can automatically reciprocate quite a large syringe-type pump, for example, two syringe-type pumps of about 100 ml to 300 ml. It is. The force and pressure applied to the syringe-type pump can be continuously monitored. Even if air is mixed in the circuit, the syringe-type pump is set up as shown in FIGS. By delivering or blood, it is possible to trap air in a syringe type pump and prevent air from being sent into the living body.

  As the synchronous alternating type two-cylinder parallel type syringe pump used in the present invention, two ordinary syringe-type pumps are arranged in parallel, and each pump is controlled by a computer system so as to repeat reciprocating motion in the opposite direction. For example, a two-cylinder parallel syringe pump described in Japanese Patent No. 4053129, Japanese Patent No. 4233854, Japanese Patent No. 4397140, and Japanese Patent Application Laid-Open No. 2004-290455 can be used. As the infusion solution or transfusion pack, an infusion pack used for normal infusion can be used. Plastic tubes such as vinyl chloride can be used for the Y-shaped branch tube, extension tube, and transport tube. A normal injection needle or catheter used for infusion can be attached to the end of the transport tube on the living body side. These infusions or blood transfusion packs, Y-shaped branch tubes, extension tubes, and transport tubes can be integrally molded.

  The automatic rapid infusion or blood transfusion device of the present invention is composed of three or more syringe-type pumps, each of which is a multi-parallel syringe-type pump capable of repeating reciprocating motion while shifting the phase, and the multi-parallel syringe-type pump A multi-parallel syringe pump with each non-branched part of a Y-shaped branch tube having a reverse one-way valve paired with each branched part connected to each of the pumps. Automatic infusion or blood transfusion composed of a circuit comprising an infusion solution or blood pack connected with an extension tube having a branch tube having two branches, and an infusion solution or blood transport tube connected with a branch tube having three or more branches at the end It may be a device.

  FIG. 4 shows an automatic rapid infusion or blood transfusion device of the present invention composed of three plural parallel type syringe pumps (15, 16 and 17). Each branch portion of a Y-shaped branch tube (18, 19 and 20) having a pair of oppositely directed one-way valves connected to each of three multiple parallel syringe pumps (15, 16 and 17) Are alternately connected to each of the branch portions of the trifurcated branch tube 22 connected to the infusion or blood pack 13 and not having a one-way valve at the end, and further to one end of the end connected to the infusion or blood transport tube 12 Each of the branched portions of the three-branch branch tube 21 that does not have a valve is alternately connected to each other, and the infusion solution or blood is supplied from one of the plurality of parallel-type syringe pumps to the patient 14 via the infusion solution or blood transport tube 12 Infusion, out of phase, infusion or blood from another pump, inhaled from infusion or blood pack 13, and conversely from either pump Alternatively, blood is inhaled from the infusion or blood pack 13, and the phase is shifted from another pump, and the infusion or blood is injected into the patient 14 via the infusion or blood transport tube 12, and the infusion or blood is always unidirectional in the circuit. Can be injected into the patient.

  FIG. 5 shows an automatic rapid infusion or blood transfusion device of the present invention composed of four parallel syringe pumps (23, 24, 25 and 26). Of a Y-shaped branch tube (27, 28, 29 and 30) having a pair of oppositely oriented one-way valves connected to each of four multiple parallel type syringe pumps (23, 24, 25 and 26) Each branch portion is alternately connected to each of the branch portions of the four-forked branch tube 32 having no one-way valve at the end connected to the infusion solution or blood pack 13, and further connected to the infusion solution or blood transport tube 12. It is alternately connected to each of the branch portions of the four-forked branch tube 31 that does not have a one-way valve at the end, and can be used for infusion or blood from any of the plurality of parallel-type syringe pumps (23, 24, 25, and 26). An infusion or blood is injected into the patient 14 via the transport tube 12, and the infusion or blood is infused from another pump out of phase with the infusion or blood pack 13 Conversely, the infusion or blood is inhaled from one of the pumps from the infusion or blood pack 13, and the phase is shifted from the other pump to infuse or infuse blood or blood via the infusion or blood transport tube 12. And infusion or blood can always be injected into the patient in one direction in the circuit.

In this way, it is composed of three or more syringe-type pumps, and each of the syringe-type pumps is moved by shifting the phase by using a plurality of parallel-type syringe-type pumps each capable of repeating the reciprocating motion while shifting the phase. Uniform and stable rapid infusion or rapid transfusion is possible.
As the pumps of the above-described multiple parallel syringe type pumps, the same pumps as the above-mentioned synchronous alternating type two cylinder parallel type syringe pumps can be used. Three or more syringe-type pumps can be arranged in parallel, and each pump can be controlled by a computer system so that the pumps repeat reciprocating motions at the same speed cycle and are appropriately shifted in phase. .

In the automatic rapid infusion or blood transfusion device of the present invention, the infusion or blood is placed outside the outer cylinder portion of the syringe-type pump or in the circuit of the portion before the infusion or blood is inhaled into any of the syringe-type pumps. It is preferable to provide a heating device or a cooling device for setting the temperature to an appropriate temperature. FIG. 6 shows a heating device 33 or a cooling device 33 provided outside the outer cylinder portion of the syringe of the syringe type pump. By providing such a warming device or cooling device, it becomes possible to send the infusion or blood to be injected into the living body after approaching the appropriate temperature. In addition, the heat exchanger that is usually placed in the circuit can be omitted by providing it outside the outer cylinder portion of the syringe, leading to cost savings, a simpler circuit configuration, and complicated in use. This also leads to omission of the instruction, and is provided for the user's convenience.
The heating device 33 provided outside the outer cylinder portion of the syringe may be any device that can heat, for example, a semiconductor heater (PTC heater), a sheathed heater, a rubber heater, or the like. The cooling device 33 may be any device as long as it can cool, for example, a semiconductor such as a Peltier element, a device using a cooling gas, or the like.

  In the automatic rapid infusion or blood transfusion device of the present invention, as shown in FIG. 7, it is preferable to dispose the gasket 34 of the syringe pump, that is, the disk portion 34 of the inner cylinder in double or more. By limiting the width of the reciprocating motion of the inner cylinder to half or more in this way, the infusion solution or blood to be injected does not come into direct contact with the outside air, and it can be expected to reduce contamination of bacteria and the like.

  When the automatic rapid infusion or blood transfusion device of the present invention is used particularly for blood transfusion, there is a risk of causing destruction of red blood cells whose negative pressure in the circuit exceeds −150 mmHg and accompanying hemolysis. Therefore, in order to prevent this, as shown in FIG. 8, it is preferable to dispose the compliance chamber 35 in the middle portion of the extension tube 11 connected to the blood pack 13 and on the suction side to the syringe type pump. The compliance chamber may be, for example, a small reservoir of soft plastic. By arranging this in the middle of the extension tube, it is possible to alleviate the application of excessive negative pressure.

In the automatic rapid infusion or blood transfusion device of the present invention, it is preferable to equip the outside of the syringe type pump with a bubble detection sensor that prevents the bubble from being fed. Specifically, as shown in FIG. 9, a laser light generator or ultrasonic generator 36 and a detector 37 are provided outside the outer cylinder portion of the syringe-type pump on the infusion or blood injection side, and the optical sensor or By using an ultrasonic sensor to monitor the level of infusion or blood in the syringe of a syringe-type pump, the risk of feeding air or bubbles can be reduced. In addition to using these optical sensors and ultrasonic sensors, any device can be used as long as it can detect the liquid level.
Further, in the automatic rapid infusion or blood transfusion device of the present invention, air or bubbles are mixed in the syringe by standing the syringe-type pump vertically to the ground and directing the inhalation or extraction portion of the infusion or blood downward. Even so, it is possible to collect bubbles on the opposite side of the inhalation or extraction portion by utilizing the influence of gravity. In addition, when injecting an infusion or blood into a living body, an optical sensor is used to monitor the liquid level in the syringe. By switching the movement of the syringe from push-out to pull-in immediately before reaching the dispensing portion, it becomes possible to repeat the reciprocating motion without injecting the gas into the living body and inject blood or blood.

  As described in detail above, the automatic rapid infusion or blood transfusion device of the present invention includes a synchronous alternating two-cylinder parallel syringe pump and a Y-shaped branch tube having a one-way valve at each branched portion. By combining them, infusion or blood can always be injected into the living body in one direction in the circuit without requiring a complicated operation such as switching of the three-way stopcock. In addition, the fluid pressure and flow rate of the infusion or blood can be accurately controlled, and even when the resistance of the circuit is high, a high fluid pressure can be secured, and the infusion or blood can be injected into the living body at a constant flow rate. Furthermore, the device of the present invention can be miniaturized and can move with the patient. Furthermore, it is possible to automate infusion or blood injection by automatically operating the synchronous alternating two-tube parallel type syringe pump without requiring a person to monitor the apparatus. Moreover, in the apparatus of the present invention, by using a plurality of parallel type syringe pumps composed of three or more pumps, each pump is moved at the same speed while being interlocked, and its phase is shifted. In addition, by controlling the pressure and pulling pressure of each pump, the fluid pressure of the infusion or blood, that is, the internal pressure and flow rate can be more strictly defined, and even when the resistance of the circuit is high, the fluid pressure is high. Can be ensured, and the flow pressure can always be kept constant.

DESCRIPTION OF SYMBOLS 1 One pump of a synchronous alternation type 2 cylinder parallel type syringe type pump 2 The other pump of a synchronous alternation type 2 cylinder parallel type syringe type pump 3 The Y-shaped branch tube which has a one-way valve opposite to each branched part 4 Y-shaped branch tube having a one-way valve opposite to each branched portion 5 One-way valve 6 One-way valve 7 One-way valve 8 One-way valve 9 Y-shaped branch tube at the end of the extension tube 10 Infusion or Y-shaped branch tube at the end of the blood transport tube 11 Extension tube 12 Infusion or blood transport tube 13 Infusion or blood pack 14 Patient 15 Parallel syringe pump 16 Parallel syringe pump 17 Parallel syringe pump 18 Each of the branched branches Y-shaped branch tube with one-way valve in the reverse direction at the part 19 Reverse direction at each branched part Y-shaped branch tube having a one-way valve 20 Y-shaped branch tube having a one-way valve in the opposite direction at each branched portion 21 Trifurcated branch tube at the end of the infusion or blood transport tube 22 End of the extension tube Three-branch branch tube 23 Parallel syringe-type pump 24 Parallel syringe-type pump 25 Parallel syringe-type pump 26 Parallel-type syringe pump 27 Y-shaped branch tube having a one-way valve opposite to each branched portion 28 Branch Y-shaped branch tube having a one-way valve in the opposite direction in each part 29 Y-shaped branch tube having a one-way valve in the opposite direction in each branched part 30 One-way in the opposite direction in each branched part Y-shaped branch tube having a valve 31 Four-branch branch tube at the end of an infusion or blood transport tube 32 4 crotch branch tubes 33 heating device or cooling device 34 syringe pump gaskets 35 compliance chamber 36 laser light generator or ultrasound generator 37 detector end of the tube

Claims (5)

It is composed of three or more syringe-type pumps, each of which is a multi-parallel syringe pump capable of repeating the reciprocating motion while shifting the phase. A plurality of parallel type syringe pumps connected to each non-branched portion of a Y-shaped branch tube having a one-way valve in the opposite direction as a pair, and an extension tube having a branch tube having three or more branches at the end An automatic rapid infusion or blood transfusion device composed of a circuit including a connected infusion or blood pack and an infusion or blood transport tube connected to a branch tube having three or more branches at the end,
Each of the branch portions of the Y-shaped branch tube connected to each of the plurality of parallel type syringe pumps has a branch portion of a branch tube having three or more branches connected to an infusion solution or blood pack, and an infusion solution or It is alternately connected to each of the branch portions of the branch tube having three or more ends connected to the blood transport tube,
The infusion or blood is injected into the living body via the infusion or blood transport tube from any of the multiple parallel type syringe pumps, and the infusion or blood is inhaled from the infusion or blood pack from other pumps by shifting the phase. On the contrary, from one of the pumps, the infusion or blood is inhaled from the infusion or blood pack, and the phase is shifted from the other pump and the infusion or blood is injected into the living body via the infusion or blood transport tube. Or blood can always be injected into the body in one direction in the circuit,
Each of the multiple parallel syringe pumps repeats reciprocating motion at the same speed so as to inject infusion or blood at a constant flow rate when repeating reciprocating motion with a phase shift.
An automatic rapid infusion or blood transfusion device into a living body.   A heating device for bringing the infusion solution or blood to an appropriate temperature outside the outer cylinder portion of the syringe type pump or in the circuit of the portion before the infusion solution or blood is sucked into any of the syringe type pumps Or the automatic rapid infusion or blood transfusion apparatus of Claim 1 which provided the cooling device.   The two or more discs spaced apart from each other so that the infusion or blood injected into the living body is not in direct contact with the outside air is attached to the syringe inner cylinder portion of the syringe type pump. Automatic rapid infusion or transfusion device.   The automatic rapid infusion or blood transfusion device according to any one of claims 1 to 3, wherein a soft compliance chamber for relieving the application of excessive negative pressure is attached in front of the suction part of the syringe pump.   The automatic rapid infusion or blood transfusion device according to any one of claims 1 to 4, wherein an air bubble detection sensor for preventing air bubble feeding is provided outside the syringe pump.

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