KR101949677B1 - Device for mixing injection - Google Patents

Abstract

The present invention relates to a device for mixing injections. When an operation switch (125) provided on a handle part (120) is operated in a state where an injection mixing syringe (10) is placed on a syringe mounting part (110) and fixed, a motor (121) is operated to rotate a conveying screw (210) so that a piston rod carrier (230) screwed to the conveying screw (210) moves linearly to move a rear end lug (14) of a piston rod (15) forward or backward. Then, two or more injections are mixed by sucking injections into a barrel (13) or discharging the injections sucked into the barrel (13) into another injection container.

Description

[0001] The present invention relates to a device for mixing injection,

TECHNICAL FIELD The present invention relates to a device for injecting a liquid containing at least two injections.

In most cases, the injectable medicine to be administered to a patient is a combination of two or more injectable drugs. For example, the first injection agent contained in the first container is extracted with a syringe and injected into the second container in which the second injection liquid is stored, thereby mixing the first injection agent and the second injection agent in the second container, The patient is injected, or the compounding agent is mixed again with the third injection agent contained in the third container, and the compounded injection solution is injected into the injector and injected into the patient.

However, when the injection liquid container is an ampoule made of glass, the tip of the ampoule is broken to form an injection solution, and the injection needle is inserted into the ampoule through the tip of the broken ampoule to extract the injection liquid. When breaking up the tip of the ampule, if minute pieces or debris of the ampule enters into the ampule, when the injection liquid in the ampule is extracted with a syringe, minute pieces of the ampule and debris are injected into the syringe and injected into the patient, causing serious accidents. As described above, a filter is installed inside the tip of the syringe so that minute fragments or debris of the ampoule, which is generated when the tip of the ampoule is broken and mixed into the injection medicine in the ampoule, does not enter into the syringe.

When injecting an injection into a syringe equipped with a filter, the filter increases the inflow resistance of the injection, which makes it easier to operate the syringe when mixing the injections. Particularly, when a lot of injections to be injected to a large number of patients are repeated a number of times, there is a problem that such injections contain a great deal of effort.

Patent Document 1 discloses an injection medicine mixing apparatus that solves the aforementioned inconvenience of the conventional method of manually mixing an injection medicine and mechanically mixes the injection medicine by operating the compounding syringe.

However, in the injection medicine mixing device of Patent Document 1 below, the mechanism for pushing and pulling the piston rod of the syringe is a crank mechanism operated by a motor. Backward movement of the piston rod can not be precisely controlled because the rotation center of the cam of the circular disk is determined by the distance between the connecting rods (the distance between the links 6, 6 '), There is a problem in that the amount of the injection liquid sucked into the syringe or discharged from the syringe can not be accurately controlled and the amount of the injection liquid can not be adjusted as needed .

In particular, there is a disadvantage in that it is inconvenient to attach or detach the syringe to or from the apparatus, inconvenient to use because it is cumbersome, and bulky and inconvenient to handle.

KR20-0232549Y1

The present invention was conceived to solve the disadvantages of the conventional injection liquid mixing apparatus described above. It is possible to mix a large amount of injection liquid without difficulty, to mix the injection liquid at a proper mixing ratio, and to mount and separate the compound syringe It is an object of the present invention to provide an injection preparation device which can be easily carried out, is compact in size, is portable, is easy to move to a position to be injected, and is easy to store and store.

According to an aspect of the present invention,

A needle connected to the front end of the barrel, a barrel having a needle coupling at a front end thereof and having a lug at a rear end thereof, a piston rod moving back and forth inside the barrel and having a lug at a rear end thereof, A syringe with a needle;

A body having a handle portion and a syringe mounting portion extending longitudinally from a front end of the handle portion and detachably supporting the syringe;

A motor provided inside the rear end of the handle portion and having a shaft extending in the longitudinal direction of the handle portion; And

A piston rod of a syringe mounted on the syringe mounting part is detachably coupled to the piston rod of the syringe, and the piston rod of the syringe is moved forward or backward along the central axis direction of the piston rod by rotation of the motor, And an actuator for driving the actuator.

The present invention is characterized in that the syringe-

A bottom extending forwardly along the body longitudinal direction at a lower front end of the handle so that the left, right, and upper regions open outward;

A barrel shearing support provided at a front end of the bottom so as to support the front end of the barrel such that the syringe is coaxially disposed on the central axis of the motor and the barrel of the syringe does not move back and forth in the longitudinal direction, And a barrel rear end support portion having a coupling groove for fixing a rear end of the barrel with a lug at the rear end thereof.

Further, according to the present invention,

A conveying screw coupled to the shaft of the motor in a coaxial direction and rotated by rotation of the shaft of the motor; And

The piston rod is fixed by engaging a rear end lug of the piston rod of the syringe when the syringe is mounted on the syringe mounting part and the piston rod is moved forward and backward in the direction of the central axis of the feed screw in accordance with the rotation of the feed screw, A piston rod carrier for moving the piston rod,

The piston rod carrier

A center screw hole through which the transport screw is threadedly engaged; A piston rod engaging groove which engages a lower half of a lug of the piston rod of the syringe to fix the piston rod in the longitudinal direction when the syringe is mounted on the syringe mounting portion; And at least one guide piece for guiding the movement of the conveying screw in a linear direction while the conveying screw does not rotate together when the conveying screw rotates.

The present invention is also characterized in that it further comprises release means for releasing the syringe mounted on the syringe mounting portion and pushing out the syringe from the fixed position.

In addition,

The syringe releasing means comprises:

A hook moving between a fixed position for holding and fixing the rear end of the barrel of the syringe and a release position for releasing the rear end of the barrel,

A spring for resiliently pushing the hook to a fixed position,

A release button for retracting the hook against the force of the spring from the fixed position to the fixed release position, and

When the syringe is mounted on the syringe mounting portion, the pusher spring is pressed down on the bottom surface of the rear end of the barrel of the syringe so as to be lowered while compressing the pusher spring, And a pusher for pushing the barrel of the syringe at a fixed position while being raised by the restoring force of the pusher spring when the barrel of the syringe is retracted.

According to the present invention,

An advance limit position sensor for sensing the maximum advance position of the piston rod,

A backward limit position sensing sensor for sensing a maximum backward position of the piston rod, and

An operation switch for operating the motor in a normal rotation or reverse rotation direction; and a controller for applying power to the motor in response to an operation signal of the motor operation switch to forwardly or reversely rotate the motor, And a motor control unit for stopping the operation of the motor by interrupting power supply to the motor by the detected forward / backward limit position arrival signal.

Meanwhile, the present invention provides the above-described injection-drug combination device; And

And a cradle having a support groove for receiving and supporting the injection preparation device, and a battery for supplying the injection preparation preparation device to the motor of the injection preparation preparation device.

According to the present invention, since the piston rod of the syringe for injecting the injected liquid is operated by an actuator mechanically operated by a motor to form an injection liquid, the mixing operation can be performed quickly and without difficulty .

Particularly, even when a filter is attached to the inlet of a syringe to filter foreign matters such as minute glass pieces in the ampoule when an injection liquid is sucked into a syringe, the pump operates as an actuator operated by a motor, The operation of mixing the injection liquid can be repeated.

According to the present invention, since the mounting portion for mounting the injecting solution dispensing device is opened at the front end and the syringe is pushed only from the top to the bottom, it is easy to mount, and even when the syringe is separated, the release button provided on the bottom of the handle portion is pushed The separation operation can be performed quickly without difficulty.

On the other hand, the injection device of the present invention can precisely and precisely control the forward and backward movement of the piston rod, so that the mixing of the injection liquid can be accurately and precisely performed.

In addition, since the injecting device of the present invention performs a mixing operation in a clean chamber having a sterilized space, it is possible to prevent the injection liquid from being contaminated during the injecting process.

Fig. 1 is a perspective view of the injection-compounding apparatus of the present invention, in which the syringe for compounding is separated. Fig.
Fig. 2 is a longitudinal cross-sectional view of the injection-drug compounding apparatus of Fig. 1, showing a state in which the carrier is moved to the forward limit.
FIG. 2A is a plan view of the injecting agent mixing apparatus according to the present invention. FIG.
Fig. 3 is a longitudinal sectional view of the syringe for syringe compounding in the state of Fig. 2 in which the carrier is moved to the forward limit.
FIG. 4 is an enlarged detail view of the 'A' portion of FIG. 3, showing the enlarged detail of the state in which the syringe is mounted on the syringe mounting portion.
FIG. 5 is a view showing a state in which the piston rod is moved backward by moving the carrier coupled with the piston rod of the syringe to a transfer screw.
6 is an enlarged detail view of the portion 'B' in FIG.
Fig. 7 is a perspective view showing the actuator and the release means separately. Fig.
8 is a side view showing the actuator and the release means separated from each other.
9A is a partially enlarged sectional view showing a state in which a release button is pulled in order to separate a syringe mounted on a syringe mounting portion.
9B is a partially enlarged cross-sectional view showing the operating state in which the release means pushes the syringe out of the syringe mount when the release button is retracted.
10 is a perspective view of a kit including a cradle and an injection device of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a liquid preparation device according to the present invention will be described in detail with reference to the accompanying drawings.

In the present specification, "front", "back", "left", "right", "upper" and "lower" denote directions shown in FIG. It is to be understood that the same is by way of illustration only and is not intended to limit the scope of the invention.

FIG. 1 is a partially exploded perspective view of the injecting medicine mixing apparatus according to the present invention, which is a perspective view showing the syringe 10 for injecting liquid preparation separated from the body 100. 2 is a longitudinal cross-sectional view of the body 100 of the injection liquid mixing apparatus in which the syringe 10 is separated.

1 and 2, the injection device of the present invention includes a body 100, a handle 120 provided at the rear of the body 100, and a handle 120 provided at the front of the body 100, An actuator 200 for moving the piston rod 15 in the forward and backward directions while the syringe 10 for injecting the injection liquid is mounted on the syringe mounting portion 110 and a syringe 10 mounted on the syringe mounting portion 110 And releasing means 300 for releasing it in a fixed state.

(10) (hereinafter referred to as "syringe"):

1 and 2 and 2A, the syringe 10 is provided with a needle engaging portion 11 to which a needle assembly (not shown) is detachably coupled at a front end thereof and has a lug 12 A piston rod 15 moving back and forth inside the barrel 13 and having a lug 14 at the rear end thereof and a piston 16 coupled to the front end of the piston rod 15, Respectively. The piston rod 15 has a rear end 17 for fixing to the syringe mounting part 110.

In the body 100,

1, 2 and 2A, the body 100 includes a handle 120 having an inner space, a syringe 120 extending forwardly along the longitudinal direction at the front end of the handle 120, And has a mounting portion 110. A motor 121 and a piston rod 15 of the syringe 10 mounted on the syringe mounting part 110 are moved forward or backward along the longitudinal direction by a motor 121 An actuator 200 is provided.

1, 2, 2A, and 3, the syringe mounting portion 110 includes a bottom portion 111 extending forward from the lower end of the front end of the handle 120 along the longitudinal direction of the body 100, A barrel front end supporting portion 112 for supporting the front end of the barrel 13 at the front end of the bottom portion 111 and a rear end supporting portion 112 for supporting the rear end of the barrel 13 at the rear end of the bottom portion 111, And a barrel rear end support portion 114 having an engagement groove 113 for fixing the front end portion 12 of the barrel.

The syringe 10 is disposed coaxially with the shaft 122 of the motor 121 and the barrel 13 has a front end surface abutted against the inner surface of the front end support portion 112 and a rear end lug 12 Is fitted and fixed in the engaging groove 113 of the barrel rear end support portion 114 so as not to move back and forth in the longitudinal direction. The piston rod 15 of the syringe 10 has a lug 14 at a rear end thereof and is fitted and fixed to the piston rod fixing groove 232 provided in the piston rod carrier 230 of the actuator 200 .

In the actuator 200,

The actuator 200 is installed in the inner space of the handle 120, as shown in FIGS. 1, 2, 7, and 8.

The actuator 200 includes a feed screw 210 coupled to the shaft 122 of the motor 121 in a coaxial direction and rotated by rotation of the shaft 122 of the motor, The piston rod 15 is fixed by engaging the rear end lug 14 of the piston rod 15 of the syringe 10 when the syringe 10 is mounted and the transfer screw And a piston rod carrier (230) moving the piston rod (15) back and forth while moving back and forth in the direction of the central axis of the piston rod (210).

4, the piston rod carrier 230 includes a center threaded hole 231 through which the feed screw 210 passes in a threaded manner, and a syringe 10 mounted on the syringe mount 110 A piston rod engaging groove 232 for engaging the lower half of the lug 14 of the piston rod 15 of the syringe 10 to fix the piston rod 15 in the longitudinal direction when the piston rod 15 is mounted, And at least one guide piece 233 guiding the handle 210 to linearly move along the guide groove 124 formed in the longitudinal direction when the screw 210 rotates.

The syringe releasing means (300)

The present invention includes release means 300 for releasing the syringe 10 mounted on the syringe mount 110 of the body 100.

The release means 300 is shown in Figures 2, 3, 4, 7 to 8, 9A and 9B.

The release means 300 includes a release button 301 slidably moved in the longitudinal direction on the bottom surface of the body 100; A release button spring 303 which resiliently biases the release button 301 in a forward direction; The release button 301 is moved to the front fixed position by the release button spring 303 to catch and fix the barrel rear end 17 of the syringe 10 and to move the release button 301 backward against the force of the release button spring 303 , A hook (302) for retracting to the release position and releasing the barrel rear end (17); When the syringe 10 is mounted on the syringe mounting portion 110, the pusher spring 311 is pressed by the bottom surface of the rear end of the barrel of the syringe 10 to compress the pusher spring 311 And then the hook 302 is retracted to the release position by the release button 301 to release the barrel 13 of the syringe 10 and the syringe 10 is lifted by the pusher spring 311, And a pusher 310 for pushing the rear end of the barrel 13 of the main body 10 from the fixed position.

The operation of releasing the syringe 10 will be described step by step with reference to Figs. 9A and 9B. The release button 301 is moved in the direction (the direction of the thick white arrow in Fig. 9A) against the force of the release button spring 303 When the piston rod 15 is retracted, the hook 302 is retracted to release the rear end 17 of the piston rod 15 (see Fig. 9A).

The pusher 310 pressed by the rear end bottom of the barrel 13 of the syringe 10 pushes the rear end of the barrel 13 upward due to the elastic restoring force of the pusher spring 311, The rear lug 14 of the barrel 13 is pushed out of the engaging groove 113 of the barrel rear end support portion 114 to release the syringe 10 (see Fig. 9B).

Motor and motor control

In the present invention, a DC motor is used as the motor 121, and the control unit of the motor 121 adjusts the speed of the motor according to the load applied to the piston rod 15 of the syringe.

The motor control unit includes: a speed detecting unit for detecting a speed of the motor; A comparison unit comparing the reference speed of the motor and the speed of the motor detected by the speed detection unit; And a motor load calculation unit for calculating a motor load based on a comparison value of the comparison unit; And a motor speed control section for applying a stop signal to the motor when the motor load calculated by the motor load calculating section is equal to or higher than the upper limit reference value and applying a signal for increasing the speed of the motor when the motor load is equal to or lower than the lower limit reference value.

Injection dosage form

The injection liquid mixing apparatus of the present invention and the liquid mixing apparatus of claim 1; And

And a cradle (500) having a support groove (501) for receiving and supporting the body (100) of the injection medicine mixing device and supplying a battery to the motor of the injection medicine mixing device .

It is also possible that the kit is housed in a sterilized clean chamber, and a user puts his / her hand into the clean chamber to perform an injection preparation operation in the clean chamber. In this case, since the mixing operation is performed in the clean chamber having the sterilized space, it is possible to prevent the injection liquid from being contaminated during the injection liquid preparation process.

10: syringe 11: needle coupling part
12: Barrel lug 13: Barrel
14: Piston rod lug 15: Piston rod
16: piston 17: rear end of the barrel
100: Body 110: Syringe mounting part
111: bottom part 112: barrel shearing support part
113: barrel lug engagement groove 114; Barrel rear end support
120: Handle 121: Motor
122: motor shaft 124: guide groove
125: Operation switch 200: Actuator
210: Feed screw 230: Piston rod carrier
231: Screw hole 232: Piston rod coupling groove
233: Guide 300: Syringe release means
301: Release Button 302: Hook
303: release button spring 310: pusher
311: Pusher spring

Claims (8)

In the injecting device,
A barrel 13 having a needle engaging portion 11 to which a needle assembly is detachably coupled to a front end thereof and having a lug 12 at the rear end thereof and a barrel 13 moving forward and backward in the barrel 13, A piston rod (15) having a piston rod (14); a syringe (10) having a piston (16) coupled to the front end of the piston rod (15); A body (100) having a handle (120), a syringe mount (110) extending in the longitudinal direction at a front end of the handle (120) and detachably supporting the syringe (10); A motor 121 installed inside the rear end of the handle 120 and having a shaft extending in the longitudinal direction of the handle 120; The rear end of the piston rod 15 of the syringe 10 mounted on the syringe mounting part 110 is detachably coupled to the rear end of the syringe mounting part 110 so as to move forward or backward along the center axis direction of the piston rod 15 by rotation of the motor 121 An actuator (200) for advancing or retracting the piston rod (15) of the syringe (10) in the central axis direction while moving backward; And syringe releasing means 300 for releasing and releasing the syringe 10 mounted on the syringe mounting portion 110 from the fixed position,
The syringe releasing means (300)
A release button 301 provided to be biased forward by the release button spring 303; The release button 301 is moved to the front fixed position by the release button spring 303 to catch and fix the barrel rear end 17 of the syringe 10 and to move the release button 301 backward against the force of the release button spring 303 , A hook (302) for moving to the rear fixed release position and releasing the barrel rear end (17); When the syringe 10 is mounted on the syringe mounting portion 110, the pusher spring 311 is pressed by the bottom surface of the rear end of the barrel of the syringe 10 to compress the pusher spring 311 And then the hook 302 is retracted to the release position by the release button 301 to release the barrel 13 of the syringe 10 and the syringe 10 is lifted by the pusher spring 311, And a pusher (310) pushing the rear end of the barrel (13) of the container (10) from a fixed position. The method according to claim 1,
The syringe mounting portion 110 includes:
A bottom portion 111 extending forwardly along the longitudinal direction of the body 100 at a lower front end of the handle 120;
The syringe 10 is disposed coaxially with the shaft 122 of the motor 121 and the barrel 13 of the syringe 10 is moved from the front end of the bottom part 111 to the front end of the barrel 13, A barrel shearing support 112 for supporting the front end of the barrel 13; And
And a barrel rear end support part (114) having an engagement groove (113) for fixing the rear end of the bottom part (111) by fitting the lug (12) at the rear end of the barrel (13) . The method according to claim 1,
The actuator (200)
A conveying screw 210 coupled to the shaft 121 of the motor 121 in a coaxial direction and rotated by rotation of the shaft 122 of the motor; And
The rear end lug 14 of the piston rod 15 of the syringe 10 is engaged to fix the piston rod 15 when the syringe 10 is mounted on the syringe mounting part 110, And a piston rod carrier (230) moving the piston rod (15) back and forth while moving back and forth in the direction of the center axis of the transfer screw in accordance with the rotation of the piston rod
The piston rod carrier (230)
A center screw hole (231) through which the feed screw (210) passes in a threaded manner; When the syringe 10 is mounted on the syringe mounting portion 110, the piston rod 15 is fixedly fixed in the longitudinal direction by fitting the lower half portion of the lug 14 of the piston rod 15 of the syringe 10, A piston rod engaging groove 232 which is formed in the piston rod; And at least one guide piece (233) for guiding a linear movement along the guide groove (124) formed in the longitudinal direction to the handle (120) when the conveyance screw (210) rotates Injecting device. delete delete The method according to claim 1,
An advance limit position sensor for sensing the maximum advance position of the piston rod,
A reverse limit position sensing sensor for sensing the maximum reverse position of the piston rod,
An operation switch for operating the motor in a normal rotation or reverse rotation direction,
And a controller for receiving the operation signal of the motor operation switch and applying power to the motor to forward or reverse the motor so that power is supplied to the motor by the forward / backward limit position detection signal detected by the forward / Further comprising a motor control unit for stopping the operation of the motor by shutting off the motor. The method according to claim 1,
The load of the motor is detected, the rotation speed of the motor is increased when the load of the motor is smaller than a predetermined upper limit value,
Further comprising a motor control unit for controlling the motor to stop the operation when the load of the motor reaches a predetermined upper limit value. An injection device according to claim 1, And
And a cradle having a support groove for receiving and supporting the injector, and a battery for supplying the injector to the motor of the injectate preparation apparatus.

Images