KR20170004117A - Liquid medicine supplying device - Google Patents

Liquid medicine supplying device Download PDF

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Publication number
KR20170004117A
KR20170004117A KR1020150094025A KR20150094025A KR20170004117A KR 20170004117 A KR20170004117 A KR 20170004117A KR 1020150094025 A KR1020150094025 A KR 1020150094025A KR 20150094025 A KR20150094025 A KR 20150094025A KR 20170004117 A KR20170004117 A KR 20170004117A
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KR
South Korea
Prior art keywords
piston
syringe
chemical liquid
nozzle
backflow prevention
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Application number
KR1020150094025A
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Korean (ko)
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KR101715692B1 (en
Inventor
이종우
Original Assignee
에이스메디칼 주식회사
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Priority to KR1020150094025A priority Critical patent/KR101715692B1/en
Publication of KR20170004117A publication Critical patent/KR20170004117A/en
Application granted granted Critical
Publication of KR101715692B1 publication Critical patent/KR101715692B1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A61M5/16881—Regulating valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/165—Filtering accessories, e.g. blood filters, filters for infusion liquids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The present invention relates to a chemical liquid supply device for injecting a chemical liquid into a patient, more specifically, one or more syringes are connected in parallel between an injection nozzle and a discharge nozzle which are separated from each other, and a piston is mounted inside the syringe And a first backflow prevention filter and a second backflow prevention filter are installed between the syringe and the nozzle so as to allow the chemical solution to pass in opposite directions to each other. When the piston is pulled by the driving unit, A predetermined amount of the chemical solution is faded in the space inside the syringe through the first backflow prevention filter, and when the piston is pushed by the driving unit, the fading solution passes through the second backflow prevention filter, So that a predetermined amount of the chemical liquid is discharged.

Description

Liquid medicine supplying device < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drug solution supply device for injecting a drug solution into a patient, and more particularly, to a drug solution supply device for continuously injecting a predetermined amount of drug solution by a piston method.

In general, hospitalized patients are injected with various kinds of medicines depending on the results of their medical treatment. Particularly, patients suffering from surgery or suffering from a serious accident are exposed to dangerous drugs such as analgesics and anesthetics The patient is injected with the drug and observes the progress of the patient.

In this case, when the drug is injected into the patient at a set amount or less, or when the drug is injected more than the predetermined amount, the patient is often put in a dangerous state,

Nurses have been required to check the amount of drug injected periodically, and a drug solution supply device for automatically injecting a set amount of drug solution to prevent such inconvenience and medical accident has been developed.

In order to meet these demands, an injection nozzle and a discharge nozzle are formed on one side and the other side, and a connection hose made of elastic silicone material is connected between the nozzles. After the connection hose is seated on the curved surface inside the inside part, There is provided a drive unit in which a roller that rotates with a pair of rotary plates interposed therebetween,

A plurality of rollers pushes the outer diameter of the connection hose while pushing the chemical solution accommodated in the connection hose from one side to the other side when the rotation of the rotation disc rotates.

However, such a chemical liquid supply device can control the chemical liquid to be injected according to the rotating speed of the rotating plate,

Since the flexible connecting hose made of silicon material is an injection molded product and the diameter of the connecting hose is changed when a certain amount or more is produced, when the connecting hose is used, there is a problem that the injected chemical solution is injected into the patient more than the set amount ,

In particular, when the roller is used for a long period of time, the roller provided on the rotary plate repeatedly presses the soft connecting hose made of silicone, so that the elastic restoring force of the connecting hose is lowered below the reference value, There is a problem that a certain amount of the drug solution is left at the end when the drug is injected into the patient less than the drug solution.

Domestic application number: 10-2014-0059284 (filing date: 2014.05.16)

Accordingly, the present invention aims to provide a chemical liquid supply device capable of injecting a predetermined amount of a chemical liquid even if the chemical liquid is used for a long period of time, without leaving the chemical liquid to be injected into the patient.

To this end, in the present invention, at least one syringe having an injection port and a discharge port is connected in parallel between the injection nozzle and the discharge nozzle 45,

A piston is mounted inside the syringe,

A first backflow prevention filter and a second backflow prevention filter are respectively installed between the syringe and the nozzle so as to allow the chemical solution to pass in opposite directions,

When the piston is pulled by the driving unit, the chemical solution injected through the injection nozzle passes through the first backflow prevention filter so that a certain amount of the chemical solution fills the receiving space 41c on the inner side of the syringe,

On the contrary, when the piston is pushed by the driving unit, the fading fluid passes through the second backflow prevention filter and is discharged outside the discharge exposure, thereby discharging a fixed amount of the chemical solution.

Further, according to the present invention, there is provided a fixing table provided with a plurality of inner portions into which a plurality of piston rear ends are fitted, and a rotary gear rotating around the inner portion,

A piston having protrusions formed at regular intervals on one side or the other side of the inner portion of the fixing table is inserted

When the piston located on one side is pulled by the driving portion, the other piston is pushed in the opposite direction by the rotating gear engaged with the piston,

And a pair of the adjacent cylinders are repeatedly crossed with each other to perform the process of injecting the chemical liquid and the process of discharging the chemical liquid simultaneously.

In the present invention, a first backflow prevention filter and a second backflow prevention filter are connected to a syringe having an inlet and an outlet, respectively, and connected to the respective injection nozzles and the exhaust nozzle, As the chemical solution is discharged constantly, the chemical solution is left, or conversely, there is no shortage.

Further, the present invention is characterized in that a plurality of innersections are formed in a fixed base, and a rotary gear is provided between the innersections so that the one piston and the other piston are engaged with the rotary gear so that when one piston is pulled, So that the operation of injecting the chemical liquid and the operation of discharging the chemical liquid can be performed simultaneously and the chemical liquid can be continuously discharged.

1 is a perspective view of a chemical liquid supply apparatus according to an embodiment of the present invention;
2 is an exploded perspective view of a chemical liquid supply apparatus according to an embodiment of the present invention.
FIG. 3 is a view showing the state of use of the chemical liquid supply apparatus according to the embodiment of the present invention
4 is a perspective view of a mounting portion of a chemical liquid supply apparatus according to an embodiment of the present invention.
5 is a perspective view of an injection section of a chemical liquid supply apparatus according to an embodiment of the present invention.
6 is a cross-sectional view of the chemical liquid supply apparatus according to the embodiment of the present invention
7 is a longitudinal sectional view of a chemical liquid supply apparatus according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a state of a chemical liquid injecting apparatus according to an embodiment of the present invention, FIG. 2 is a view showing a state in which the chemical liquid pack and an injecting unit are separated while the cover body of FIG. 1 is opened, And shows the state where the chemical solution pack and the injection part are mounted. FIGS. 4 and 5 are views showing the mounting part and the injection part, and FIGS. 6 and 7 are sectional views showing the operation state of the syringe in the longitudinal direction and the transverse direction.

As shown in the figure, a transparent cover body 20 is hinged to an upper end of a housing 10 having a predetermined inner space 11, and the lower end of the housing 10 is provided with an amount of injected drug, A display device for displaying status and a plurality of operation buttons are formed.

An inner space 11 for accommodating the liquid or liquid medicine pack 1 is formed on the inner side of the housing 10 when the cover body 20 is rotated.

A mounting portion (30) is provided at the lower end of the inner space (11)

One end of the mounting portion 30 is connected to the liquid or liquid medicine pack 1 and the other end of the mounting portion 30 is connected to the injection portion 40 connected to the discharge hose 2.

The injection unit 40 at this time has an injection port 41a and an outlet port 41b formed in the syringe 41 having a constant accommodation space 41c in the upper case and the lower case,

The first backflow prevention filter 42 and the second backflow prevention filter 43 are connected to the injection port 41a and the discharge port 41b of the syringe 41,

The first check valve 42 and the second check valve 43 are connected to the nozzle inlet of the injection nozzle 44 and the nozzle outlet of the discharge nozzle 45, respectively.

At this time, the first and second check valves 42 and 43 connected to each other are installed in opposite directions so that the chemical solution is injected to one side and the chemical solution is discharged to the other side

When the piston 48 of the syringe 41 is pulled out, the chemical liquid injected through the injection nozzle 44 passes through the first backflow prevention filter 42 and flows into the accommodating space 41c inside the syringe 41 To be accepted

Conversely, when the piston 48 is pushed, the chemical solution in the accommodation space 41c is discharged through the second backflow prevention filter 43 to the outside of the discharge exposure, .

The piston 48 inserted in the syringe 41 is formed with a receiving portion 48b at the lower end thereof. The receiving portion 48b is provided with a retaining plate 31 or a retaining plate Fitted,

The engaging plate 31 or the engaging piece is slid and moved by the drive motor 33 built in the inside of the housing 10 to move the piston 48 forward or backward.

The syringe 41 of the other side is discharged while the other syringe 41 is injected. When the syringe 41 of the other side is injected, So that the syringe 41 of the syringe 41 is injected repeatedly.

That is, a plurality of inner portions 49a for assembling the upper assembled case and the lower assembled case into which the rear end of the piston 48 is inserted, and a piston 48 inserted in the inner portion 49a are guided There is provided a fixing table 49 on which a guide piece 49c and a rotary gear 49b that rotates with the inside portion 49a interposed therebetween,

When the piston 48 having the protrusion 48a formed at one side or the other side at a constant interval is inserted into the inner portion 49a of the fixing table 49,

When the piston 48 located on one side is pulled by the driving portion, the piston 48 on the other side is pushed in the opposite direction by the engaged rotary gear 49b,

The pair of neighbors cross-reciprocates between the pistons 48 to perform the process of injecting the chemical liquid and the process of discharging the chemical liquid.

Therefore, after the chemical liquid of the one syringe 41 is injected, the chemical liquid continuously injected into the syringe 41 of the other syringe 41 can be continuously injected, so that a constant amount of the chemical liquid can be supplied will be.

The injection unit 40 may form a chemical liquid injection port extending outwardly from the injection nozzle 44, and a nozzle filter 46 may be installed in the chemical liquid injection port.

At this time, the nozzle filter 46 is a filter for injecting the chemical solution only in one direction. When the chemical solution contained in the chemical solution pack 1 is consumed by a predetermined amount or more, the nozzle filter 46 contains the same kind of chemical solution When the needle of the syringe is inserted into the nozzle filter 46 and injected, the chemical solution of the syringe may be refilled when it is inserted into the chemical liquid pack through the injection nozzle 44.

In addition, the discharge nozzle 45 is also provided with one or more medicament outlets protruded outwardly. In the medicament outlets, a discharge hole 47a is formed in the contact plate 47b, and on the outer side of the discharge hole 47a, A tapered region 47 to which a bonding film is adhered may be mounted.

When the pair of pistons 48 are reciprocatingly reciprocated, one side is pushed inside the syringe 41, and when the closed state is maintained, the other side is pulled to maintain the opened state, Of the air is flowing into the space. Therefore, at this time, the tapered region 47 is formed to form a separate chemical solution discharge hole in the discharge sidewall so as to discharge the air that the syringe 41 had to accommodate through the tapered region 47 to the outside.

At this time, a bonding film having elasticity such as silicone is bonded to the rim on the fastening plate 47b of the tenter strip 47, so that the bonding film peels out through the holes formed in the discharging of the chemical solution,

At this time, the sensing unit 32 of the mounting unit 30 located inside is touched to report that the syringe 41 has discharged the chemical liquid.

The driving part is formed at the lower end of the mounting part 30. The driving part is cut at one side of the bottom surface of the mounting part 30 to form a sliding groove 34 opened to the left and right direction, And the lower end of the retaining plate 31 is fitted in the rotating shaft of the drive motor 33 mounted inside the housing 10. [

In this case, the magnetic substance is installed in the lower end of the mounting portion 30 and the magnetic substance is also built in the injection portion 40 so that only the injection portion 40 is easily separated from the mounting portion 30, After the connection, the injection unit 40 is fixed to the inside of the mounting unit 30 by the magnetic force by putting it into the mounting unit 30 again.

Hereinafter, the operation of the chemical liquid supply apparatus according to the embodiment of the present invention will be described. First, after the cover body 20 is opened, the injection unit 40 attached to the mounting unit 30 is separated.

The chemical solution pack 1 is connected to the injection nozzle 44 of the separated injection part 40 or the new injection part 40 and the chemical solution pack 1 are inserted into the mounting part 30.

At this time, the injection part 40 fitted in the mounting part 30 is fixed to the inside of the mounting part 30 by the magnetic force, and the setting is completed by touching the power button and the operation button.

At this time, the driving motor 33 begins to rotate and starts to move the latching plate 31 from one side to the other side,

The piston 48 which receives the upper end of the retaining plate 31 is pulled from one side to the other side by the retaining plate 31 so that the chemical liquid passes through the first backflow prevention filter 42 through the injection nozzle 44 And is accommodated in the inside of the syringe 41 inside the accommodating space 41c.

When the drive motor 33 completes the movement to one end, the syringe 41 receives the set amount of the chemical solution.

At this time, when the drive motor 33 starts rotating in the opposite direction, the latch plate 31 is moved from one side to the other side, and the piston 48 accommodating the upper end of the latch plate 31 is pushed, The chemical solution accommodated in the inner wall 41c is sent out through the second backflow prevention filter 43 to the outside of the discharge nozzle 45. [

At this time, when the chemical liquid is discharged, the air contained in the syringe 41 is discharged to the most sensitive region 47. At this time, The sensing unit 32 located at the lower end of the mounting unit 30 is touched to report to the control unit that the chemical liquid has been injected.

The piston 48 of the adjacent syringe 41 is rotated by the rotary gear 49b when the syringe 41 is composed of a plurality of the syringes 41 and is mounted on the fixed table 49 engaged with the rotary gear 49b The one syringe 41 moves from one side to the other side while the other syringe 41 is moved from one side to the other side while simultaneously moving the operation of supplying the chemical solution and the operation of sucking the chemical solution, It is possible to supply a certain amount of drug to the patient.

1: chemical pack 2: discharge hose
10: Housing 11: Interior space
20: cover body 30:
31: latching plate 32: sensing unit
33: drive motor 34: sliding groove
40: injection part 41: syringe
41a: Inlet port 41b: Outlet port
41c: accommodation space 42: first backflow prevention filter
43: second backflow prevention filter 44: injection nozzle
45: exhaust nozzle 46: nozzle filter
47: Sensing region 47a: Discharge hole
47b:
48: piston 48a:
48b:
49:
49a: Inner part 49b: Rotary gear
49c: guide piece 49d: opening

Claims (6)

One or more syringes are connected in parallel between the injection nozzle and the discharge nozzle which are separated from each other,
A piston is mounted inside the syringe,
A first backflow prevention filter and a second backflow prevention filter are respectively installed between the syringe and the nozzle so as to allow the chemical solution to pass in opposite directions,
When the piston is pulled by the driving unit, the chemical liquid injected through the injection nozzle passes through the first backflow prevention filter so that a certain amount of chemical solution fills the receiving space inside the syringe,
When the piston is pushed by the driving unit, the fugitive liquid medicine is discharged through the second backflow prevention filter to the outside of the discharge exposure so that a predetermined amount of the chemical liquid is discharged. The method according to claim 1,
A plurality of inner portions in which the rear ends of the respective pistons are fitted and a fixed base provided with a rotary gear that rotates with the inner portion interposed therebetween,
A piston having protrusions formed at regular intervals on one side or the other side of the inner portion of the fixing table is inserted
When the piston located on one side is pulled by the driving unit, the other piston is pushed in the opposite direction by the rotating gear engaged with the piston. Characterized in that 3. The method according to claim 1 or 2,
Wherein the injection nozzle is formed with one or more chemical solution injection ports protruding outwardly, and a nozzle filter is mounted on the chemical solution injection port The method according to claim 1,
The discharge nozzle is provided with one or more outwardly projecting medicament outlets. The medicament outlets are provided with a discharge hole in the contact plate, and a tapered region having a bonding film attached is mounted on the outer side of the discharge hole.
When the chemical liquid is discharged, the bonding film attached to the outside through the through hole is swollen to touch the sensing part formed on the mounting part to report that the syringe has discharged the chemical liquid 3. The method of claim 2,
The driving unit includes a sliding groove formed at one side of the mounting portion to cut the bottom surface of the mounting portion. A hanging ramp is mounted on the sliding groove. The lower end of the holding plate is mounted on a rotary shaft of the driving motor. Characterized in that the groove is moved forward or backward 6. The method of claim 5,
An opening 49d is formed at one side of the fixed base, and a piston having a receiving portion formed at one end of the opening is seated on the inside of the opening. The holding plate of the mounting portion is fitted into the receiving portion of the receiving portion of the piston Featured
KR1020150094025A 2015-07-01 2015-07-01 Liquid medicine supplying device KR101715692B1 (en)

Priority Applications (1)

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KR1020150094025A KR101715692B1 (en) 2015-07-01 2015-07-01 Liquid medicine supplying device

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Application Number Priority Date Filing Date Title
KR1020150094025A KR101715692B1 (en) 2015-07-01 2015-07-01 Liquid medicine supplying device

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KR101715692B1 KR101715692B1 (en) 2017-03-14

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102464481B1 (en) * 2020-05-26 2022-11-08 고려대학교 산학협력단 Extendable modulized contrast agent syringe automatic injector

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100784760B1 (en) * 2006-10-31 2007-12-14 주식회사 려암 Injector for animals
KR20110012571A (en) * 2009-07-31 2011-02-09 국립암센터 Drug filling device for body fluids compensated drug infusion device
KR20120035260A (en) * 2010-10-05 2012-04-16 김정재 The injection set
KR20140059284A (en) 2011-09-09 2014-05-15 도요타지도샤가부시키가이샤 Secondary cell inspecting method
KR20160068356A (en) * 2014-12-05 2016-06-15 백정흔 Medical fluid supplying apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100784760B1 (en) * 2006-10-31 2007-12-14 주식회사 려암 Injector for animals
KR20110012571A (en) * 2009-07-31 2011-02-09 국립암센터 Drug filling device for body fluids compensated drug infusion device
KR20120035260A (en) * 2010-10-05 2012-04-16 김정재 The injection set
KR20140059284A (en) 2011-09-09 2014-05-15 도요타지도샤가부시키가이샤 Secondary cell inspecting method
KR20160068356A (en) * 2014-12-05 2016-06-15 백정흔 Medical fluid supplying apparatus

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