JPH06319806A - Automatic injecting device - Google Patents

Abstract

PURPOSE:To provide the automatic injecting device for liquid constituted to inject liquid in medical apparatus to be used in hospitals, etc., and more particularly to safely and easily inject a contrast medium in image diagnosis by irradiation with X-rays. CONSTITUTION:This automatic injecting device is composed of a holding means 2 which consists of a holder for fixing inserted and clamped with plural injectors 1, a turning and stopping means which rotates this holding means 2 at a required angle by a hook 26 and a ratchet and stops the means, a pressing means 4 which consists of a rack and pinion 15 for advancing and retreating a slide bar for pressing the injectors 1 and a control means which consists of various switches and relays for controlling the advance, retreat and speed of this pressing means 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic liquid injection device for medical equipment used in hospitals and the like, and more particularly, an automatic liquid injection device capable of safely and easily injecting a contrast agent in image diagnosis by X-ray irradiation. It relates to the device.

[0002]

2. Description of the Related Art In general, various kinds of diagnosis by X-ray irradiation are performed in hospitals and the like. Among them, there is image diagnosis by X-ray irradiation of a contrast agent. The contrast agent for this purpose is directly swallowed or locally injected. Conventionally, in image diagnosis by X-ray irradiation of a contrast agent by local injection, two persons, an intubation operator who inserts a tube into the affected part of the examiner and an injecter of the contrast agent, cooperate to perform the injection. It was done by manually pressing the vessel.

[Problems to be solved by the device]

However, in such manual pressing of the injector by the injector, the injection amount and the injection pressure of the contrast medium are determined by the injector while judging whether or not the injection pressure is adjusted, and care should be taken not to become an excessive amount and pressure. However, this requires an injector with experience and skill. In addition, when injecting a liquid into a medical examiner, it is required to inject it at a constant amount and a constant pressure, and the injection pressure also becomes a considerable pressing force, which causes finger pain. Was needed. Furthermore, the intubator and the injector are in the same room as the examiner in the radiation room to intubate the tube and inject the liquid into the affected area, so that they are exposed to the radiation by the X-ray irradiation, resulting in repeated radiation. A-bombing will adversely affect the body of the injector.

[Means for solving the problem]

The present invention is intended to provide an automatic injection device capable of effectively solving the above-mentioned problems, and a holding means for inserting and holding a plurality of injectors, and a holding means for mounting the holding means at a required angle. Rotating and stopping means for rotating and stopping, pressing means for advancing and retracting to press the injector, and control means for controlling advancing, retracting and speed of the pressing means. And

[Action]

By pressing the injector attached to the holding means by advancing / retracting the pressing means controlled by operating the switch of the control means at the required speed, the liquid is automatically injected and the required amount and the required amount are used. The liquid under pressure is easily injected, and a plurality of injectors mounted on the holding means are pressed and rotated by advancing / retracting the pressing means, thereby facilitating injection of a large amount of liquid by the required pressure.

【Example】

An embodiment according to the present invention will be described below with reference to FIGS. 1 to 5. FIG. 1 is a side view showing an automatic injection device according to the present invention, FIG. 2 is a perspective view showing a structure of a holding means for mounting an injector, and FIG. 3 is a rotary / stop means for rotating the holding means and an injector. FIG. 4 is a perspective view showing the structure of the pressing means for pressing, FIG. 4 is a block diagram showing the control means, and FIG. 6 is an operation chart. The automatic injecting device of this embodiment shown in FIGS. 1 to 5 has a holding means 2 into which a plurality of injectors 1 are inserted, clamped, and mounted, and a rotation and stop for rotating the holding means 2 by a required angle and stopping it. A basic part is constituted by the means 3, the pushing means 4 which moves forward and backward to push the injector 1, and the control means 5 which controls the forward movement, backward movement and speed of the pushing means 4. The automatic injection device is set on the base 6 as shown in FIG.

The holding means 2 will be described in detail. As shown in FIG. 2, the fixing holder 7 for holding the injector 1 has holes 8 into which the injection ports 1a of the injector 1 are inserted at regular intervals. A plurality of circular plates 9 and two holding plates 11 around which a semi-circular cutout 10 into which the cylinder 1b of the injector 1 is inserted is provided at a position facing the hole 8 at a required interval. And is fixed in front of a long shaft 12 which is rotatably supported. The holding plate 11 is adjustably screwed so as to sandwich the collar portion 1c of the injector 1.

Pressing means 4 for pressing the injector 1
Is a slide having a rack 13 on its upper surface, which is axially supported so as to be movable back and forth in parallel with a shaft 12 at the rear opposite to one of the notches 10 provided in the holding plate 11 of the fixing holder 7 as shown in FIG. It is composed of a bar 14 and an electric motor 16 having a pinion 15 fixed to the tip of a shaft that meshes with the rack 13. The rotation of the electric motor 16 moves the slide bar 14 back and forth. 17 is an adjusting plate and a slide bar 14
Is screwed to the tip of. The dogs 18 and 19 are moved to the respective limit switches 20 and 19 by the movement of the slide bar 14.
21 is fixed to the position where the slide bar 1 operates.
4 is the most retracted position and the dog 18 is in contact with the limit switch 20. This is the initial state of the apparatus. Further, the slide bar 14 is provided with a cam 22 having a gentle slope and a flat surface, and a roller 23 that comes into contact with the cam 22 and rolls is supported by an arm 24 that is rotatably supported in the horizontal direction. The cam 22 is constantly pressed by the spring 25. A hook 26 is fixed to the tip of the arm 24.

Rotation for rotating and stopping the holding means 2,
The stopping means 3 is fixed to the rear of the shaft 12 and is provided around the ratchet 2 with the same number of pawls 27 as the holes 8 of the disk 9 of the fixing holder 7 and the notches 10 of the holding plate 11 at equal intervals.
8, a positioning plate 30 around which the same number of recesses 29 as the claws 27 of the ratchet 28 are provided at equal intervals, and a positioning stopper 32 made of an elastic material having a projection 31 fitted into the recess 29 of the positioning plate 30. The hook 26 engages with the claw 27 of the ratchet 28, and the projection 31 always engages with one of the recesses 29 of the positioning plate 30 to restrict the rotation of the positioning plate 30, that is, the rotation of the shaft 12, The fixing holder 7 is held at a predetermined angle. Above, rotation,
The stop means 3 and the pressing means 4 are covered by the control box 33.

The control means 5 for controlling the rotation and stop means 3 for rotating and stopping the holding means 2 and the pressing means for the injector 1 has a circuit configuration as shown in FIG. The power switch 34 provided on the front surface, the continuous operation switch 35, the inching switch 36, the return switch 37,
It is composed of a stop switch 38, a speed adjusting knob 39, and a relay 40 incorporated in a control box 33 which is operated by each of these switches 35, 36, 37 and 38, and is combined with the limit switches 20 and 21. Switch 4 for controlling the outside
1 is connected. The continuous operation switch 35 continuously operates the rotation / stop of the holding means 2 and the forward / backward movement of the pressing means 3 until the stop switch 38 is pressed. The inching switch 36 freely advances the slide bar 14 to a desired position. The return switch 37 returns the slide bar 14 to the initial state. The speed adjustment knob 39 changes the rotation speed of the electric motor 16 to adjust the forward / backward speed of the slide bar 14.

Next, the operation of this injection device will be described. FIG. 5 shows an operation chart. The pressure of the injector 1 is
When the power switch 34 of the control box 33 device is turned on and the continuous operation switch 35 is activated, the relay 40 is activated, and the forward rotation of the electric motor 16 causes the rack 13 meshed with the pinion 15 to move the slide bar 14 forward. At this time, the slide bar 14 is behind the piston 1d of the injector 1 and does not press it. With the forward movement of the slide bar 14, the roller 23 rotates along the gentle slope of the cam 22, the arm 24 is rotated in the horizontal direction, and the hook 26 attached to the tip is moved. Along with the rotation of the arm 24, the hook 26 moves while engaging with the claw 27 of the ratchet 28 to rotate the ratchet 28. By this rotation operation, the protrusion fitted into the recess of the positioning plate is pushed down against the elastic force of the positioning stopper to rotate the positioning plate, and the regulation of the rotation of the fixing holder is released. Further, when the slide bar 14 advances, the hook 26 moves with the rotation of the arm 24 to rotate the ratchet 28, and the horizontally moving hook 26 rotates the ratchet 28.
The engagement with the claw 27 of the
When the hook 26 and the pawl 27 of the ratchet 28 are disengaged from each other, the hooks 26 and the pawls 27 of the ratchet 28 are completely separated from each other, and the protrusions 31 of the positioning stoppers 32 are fitted into the recesses 29 of the rotated positioning plate 30. The rotation of 7 is restricted to a predetermined position. The slide bar 14 is a holder 7 for fixing.
During the operation of starting and stopping the rotation of the piston 1 of the injector 1
It is behind d and does not press it. Then, when the slide bar 14 further advances, it abuts on the piston 1d of the injector 1 and continues to press the piston 1c of the injector at a constant speed set by the speed adjusting knob 39 of the control box 33. During this time, the roller 23 is the cam 22.
Of the arm 24 is kept rolling, and the arm 24 is not rotated. Then, when the dog 19 comes into contact with the limit switch 21, the slide bar 14 that has moved forward operates the relay 40 of the connected control means 5 to rotate the electric motor 16 in the reverse direction and retract the slide bar 14. Slide bar 14
The roller 23 attached to the arm 24 rolls along the flat surface and the gentle slope surface of the cam 22 by the retreat of the arm 24, the arm 24 is rotated by the spring 25, the hook 26 is moved, and the pawl 27 of the ratchet 28 is moved. To prepare for the next rotation operation of the fixed holder 7. When the slide bar 14 is further retracted, the dog 18 contacts the limit switch 20, the rotation of the electric motor 16 is stopped, and the slide bar 14 returns to the initial state.

Next, a method of using this automatic injection device will be described. First, the injection port 1a of the injector 1 is inserted into the hole 8 provided in the disk 9 of the fixing holder 7, and the cylinder 1b is inserted into the notch 10 of the holding plate 11 to clamp the collar portion 1c. Next, the power switch 34 of the control box 33 is turned on, and the slide bar 14 is advanced to the maximum by the inching switch 36, so that the maximum advance position and the maximum movement position of the piston 1b of the injector 1 coincide with each other. After the adjustment plate 17 at the tip is rotated and adjusted, the return switch 37 is pressed to move the slide bar 14 to the initial state and stop. Then, a required number of injectors 1 are attached to the holder 7, and the tube 42 is connected to the inlet 1a of the injector 1 that first presses, and the preparation for injection is completed. After that, the slide bar 1 is pressed by the continuous operation switch 35 of the control means 5.
4 is advanced to automatically inject the liquid in the injector 1, and the tube 41 is returned when the slide bar 14 returns to the initial state.
Is removed, the inlet is connected to the inlet 1a of the next injector 1, and the operation of pressing the continuous operation switch 35 is repeated, so that a desired number of liquids can be continuously injected.

In this embodiment, the injection port 1 of the injector 1
For connection of the tube 42 to a, one tube 42 is connected and disconnected for each injector 1, but a tube 42 branched into a plurality of tubes is connected to the injection port 1a of each injector 1. You may do it. Further, various sensor elements may be used instead of the limit switches 18 and 19 in the control means 5, and a memory may be used instead of the relay 40.
It goes without saying that a CPU having a reading means or the like may be used.

[Effect of device]

As described above, the automatic injection apparatus according to the present invention has a holding step 2 into which a plurality of injectors 1 are inserted, clamped and mounted, and a rotating means for rotating the holding means 2 by a required angle and stopping it. It is characterized by comprising a moving and stopping means 3, a pushing means 4 for moving forward and backward to push the injector 1, and a controlling means 5 for controlling the forward movement, backward movement and speed of the pushing means 4. It has the following excellent effects. Since the liquid can be injected into the examiner automatically and continuously at a desired injection amount and pressure, the pressure of the injector 1 is adjusted so that the injector does not have an excessive amount and pressure as in the conventional case. It is not necessary to perform it while making a decision, and it has an advantage that it can be easily performed even by an injecter who does not have the skill and experience for injection. In addition, since the pressing of the injector 1 is automatically performed by the mechanical pressing means, it is not necessary to manually press the injector 1 as in the conventional case, the hands and fingers are not hurt, and when injecting a large amount of liquid. A plurality of injectors 1 into which liquid has been previously inserted are mounted and placed on the rotating holding means 2,
Since the holding means 2 can be rotated and the liquid can be sequentially injected after each injection, there is an advantage of reducing the labor and time of the injector. Furthermore, the injection / stop of the liquid in the injector 1 is controlled by the control box 3
Since the pressing and stopping of the injector can be remotely controlled by the foot switch 41 attached to 3, it is possible for one person to concurrently intubate and inject the liquid into the affected area of the examiner, which is advantageous in securing labor force. Become. Furthermore, it is not necessary for the intubation operator and the injector to share the same room with the examiner in the radiation room as in the conventional case, and it is sufficient for any one of the intubation operator and the injector to enter the radiation room. It has the greatest advantage that the amount of exposure due to X-ray irradiation is halved.

[Brief description of drawings]

1 a side view of an embodiment of the device according to the invention, FIG.

FIG. 2 is a perspective view of an embodiment showing a structure of a holding means for mounting an injector.

FIG. 3 is a perspective view of an embodiment showing a configuration of rotation / stop means for rotating the holding means and pressing means for pressing the injector.

FIG. 4 is a block diagram of an embodiment showing a control means.

FIG. 5 is an operation chart of an embodiment of the device according to the present invention.

[Explanation of symbols]

1 injector 2 holding means 3 turning / stopping means
4 Pressing means 5 Control means 6 Base 7 Fixing holder
13 rack 14 slide bar 15 pinion 16 electric motor 20, 21 limit switch 22 cam 23
Roller 26 Hook 28 Ratchet 35 Continuous operation switch 40 Relay 41 Foot switch 42 Tube

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] November 17, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 5

[Correction method] Delete

Claims (3)

[Claims] 1. A holding means for inserting and sandwiching and mounting a plurality of injectors, a rotating and stopping means for rotating the holding means by a predetermined angle and stopping it, and advancing and retracting to press the injectors. An automatic injecting device, comprising: a pressing unit that controls the pressing unit, and a control unit that controls the forward movement, the backward movement, and the speed of the pressing unit. 2. The automatic injecting device according to claim 1, wherein the means for rotating the holding means equipped with the injector is a ratchet mechanism including a hook and a ratchet wheel. 3. The automatic injection device according to claim 1, wherein the pressing means for pressing the injector comprises a rack and a pinion.