KR101744291B1 - Filering apparatus of liquid medicinal for medical treatment - Google Patents

Filering apparatus of liquid medicinal for medical treatment Download PDF

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Publication number
KR101744291B1
KR101744291B1 KR1020160022801A KR20160022801A KR101744291B1 KR 101744291 B1 KR101744291 B1 KR 101744291B1 KR 1020160022801 A KR1020160022801 A KR 1020160022801A KR 20160022801 A KR20160022801 A KR 20160022801A KR 101744291 B1 KR101744291 B1 KR 101744291B1
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South Korea
Prior art keywords
chemical liquid
hollow
syringe body
filter
discharge
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KR1020160022801A
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Korean (ko)
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임성구
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임성구
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Priority to KR1020160022801A priority Critical patent/KR101744291B1/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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/3145—Filters incorporated in syringes
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • 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
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/3129—Syringe barrels
    • A61M5/3134—Syringe barrels characterised by constructional features of the distal end, i.e. end closest to the tip of the needle cannula
    • 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
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/75—General characteristics of the apparatus with filters

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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)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical fluid filtering device for filtering foreign substances that may be contained in a medical fluid, and more particularly to a medical fluid filtration device for filtering medical fluids such as a syringe, The present invention relates to a medical fluid filtration device which is installed in a scanning device and filters out foreign substances generated when a chemical liquid container storing a chemical liquid is opened to prevent the foreign substance from being administered to a patient together with a chemical liquid.
In addition, the present invention is capable of filtering foreign matters again by filtering the foreign substances contained in the chemical solution sucked into the syringe body through the multiple filter members and then discharging the chemical solution from the syringe body with the injection needle; The chemical liquid discharged from the syringe body is prevented from flowing back to the suction filter that sucks the chemical liquid into the syringe body so that the effect that the foreign matter filtered in the suction filter may be administered to the patient can be solved.

Description

[0001] The present invention relates to a filtering apparatus for liquid medicinal solution,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical fluid filtering device for filtering foreign substances that may be contained in a medical fluid, and more particularly to a medical fluid filtration device for filtering medical fluids such as a syringe, The present invention relates to a medical fluid filtration device which is installed in a scanning device and filters out foreign substances generated when a chemical liquid container storing a chemical liquid is opened to prevent the foreign substance from being administered to a patient together with a chemical liquid.

Usually, a syringe and a needle are used for the method of using the chemical solution. The material of the chemical liquid container for storing the chemical liquid is harmless to the human body and does not react with the chemical liquid. It is sealed to avoid infection, and is used in combination with glass, synthetic resin, silicone rubber or the like.

Also, since the foreign substance is mixed with the chemical liquid in the process of releasing the seal of the chemical liquid container and sucking the chemical liquid, the chemical liquid is administered to the patient in a state where the foreign substance is not visually recognized, The potential health of the patient is threatened.

Recently, a number of products equipped with filters capable of filtering the foreign substances contained in the above chemical solution have been proposed. However, since the hollow of the injection needle head is narrow, the size of the filter can not be increased indefinitely. In order to solve this problem, the structure of the injection needle head was changed to increase the volume.

The following is a representative prior art related to a medical liquid filter device.

Korean Patent Registration No. 10-1591436 relates to a safety filter syringe, comprising: a needle holder including a support for supporting a needle and a sleeve coupled to the support; A cylinder surrounding the outer periphery of the sleeve of the needle holder and having a chamber in which an injection liquid is received; A plunger provided with a piston and axially movable in the cylinder; Wherein the plunger is formed with a protruding end in a radial direction; Wherein an inner circumferential surface of the sleeve of the needle holder is formed with an annular engaging protrusion selectively engageable with rotation of the engaging end in the circumferential direction; And a filter unit for filtering the foreign substances of the injection liquid is provided in the support.

In addition, the above-described technique has the effect of minimizing the component parts and minimizing the manufacturing cost and lowering the manufacturing cost as compared with the conventional technique. However, when the injection liquid (the liquid medicine of the present invention) It is troublesome to change the direction of the flow of the injection liquid. Therefore, there is a need for continuous research and development for solving the problem.

Korean Registered Patent No. 10-1591436 (Jan. 28, 2016) Korean Patent Publication No. 10-2015-0065980 (Jun. Korean Registered Patent No. 10-1560150 (Oct. Korean Utility Model Publication No. 20-2015-0000096 (2015.01.07.)

SUMMARY OF THE INVENTION [0005] The present invention has been made in order to solve the problems of the prior art medical fluid filtering apparatus. The conventional medical fluid filtering apparatus merely extracts foreign substances contained in the medical fluid only when the medical fluid is sucked into the syringe body, As a result, the filtering effect of the foreign matter is somewhat insufficient;

Even if foreign substances can be filtered when the chemical liquid is sucked into the syringe body or discharged, the discharge pressure generated in the discharge space is generally larger than the suction pressure generated when the chemical liquid is sucked. Therefore, The present invention is directed to providing a solution to the problem that the foreign matter filtered in the suction filter can be administered to the patient by flowing backward into the suction filter.

The present invention has been made to solve the above-

A plurality of filter elements for filtering the foreign substances contained in the chemical liquid when the chemical liquid is sucked from the injection needle to the syringe body and when the chemical liquid is discharged from the syringe body by the injection needle, And a medical liquid filtering device.

The medical chemical filtering apparatus according to the present invention as described above filters the foreign substances contained in the chemical liquid sucked into the syringe body through the multiple filter members and filters the foreign substances again when the chemical liquid is discharged from the syringe body with the injection needle. An effect can be obtained;

The chemical liquid discharged from the syringe body is prevented from flowing back to the suction filter that sucks the chemical liquid into the syringe body so that the effect that the foreign matter filtered in the suction filter may be administered to the patient can be solved.

1 is a cross-sectional view showing a multi-directional valve equipped with a medical chemical filtering device according to a preferred embodiment of the present invention;
BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical chemical filtering apparatus, and more particularly,
3 is an exploded cross-sectional view showing a syringe and an injection needle equipped with a medical liquid filtering device according to a preferred embodiment of the present invention.
4 is a partial sectional view showing a part of a syringe and a needle having a medical chemical filtering device according to a preferred embodiment of the present invention.
5A is an exploded perspective view showing a medical liquid filtering apparatus according to a preferred embodiment of the present invention.
5B and 5C are exploded perspective views showing a medical chemical filtering apparatus according to a preferred embodiment of the present invention.
6A is an exploded perspective view showing a medical chemical filtering apparatus according to another preferred embodiment of the present invention.
FIG. 6B is an exploded perspective view showing a medical chemical filtering apparatus according to another preferred embodiment of the present invention; FIG.
FIGS. 7 to 10 are partial cross-sectional views illustrating flows of a chemical liquid and a foreign substance in a medical liquid filtering apparatus according to another preferred embodiment of the present invention. FIG.

The present invention relates to a medicinal liquid filtering apparatus for filtering a foreign substance that may be contained in a chemical liquid and is inserted into the hollow of the needle needle 111 inserted into the distal end portion 101 of the syringe body 100, And a multifilter member (1) for filtering the foreign substances contained in the chemical liquid when the chemical liquid is sucked into the syringe body (100) from the syringe body (100) and the chemical liquid is discharged from the syringe body To a medical liquid filter for medical use.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown.

First, the medical liquid filtering device according to the present invention is installed in a medical scanning device in which a liquid medicine flows, such as a syringe, a liquid medicine hose for use in liquid medicine or a valve connected to the liquid medicine hose, a multi-directional valve 200, Filter.

Here, the medical scanning device may be a general one. Hereinafter, a detailed description of the present invention will be given of a syringe having the injection needle 110 as a preferred embodiment.

The injection needle, which is generally referred to as an 'injection needle', comprises an injection needle 110 to be inserted into a human body as shown in FIG. 2 and a injection needle head 111 connected to a rear end of the injection needle 110, A hollow communicating with the hollow of the injection needle 110 is formed in the injection needle head 111 so that the distal end portion 101 of the syringe body 100 is inserted.

In addition, the syringe includes a syringe body (100, syringe) in the form of a cylinder in which a hollow is formed to receive a chemical liquid, and a syringe body (100) which discharges a suction pressure and a chemical liquid to be sucked into the hollow of the syringe body And a plunger 120 in the form of a piston for forming a discharge pressure.

A distal end portion 101 communicating with the hollow of the syringe body 100 and fitted to the injection needle head 111 is protruded from the distal end of the syringe body 100.

Specifically, the medical liquid filter for medical use according to the present invention comprises a multiple filter element (1). That is, the multiple filter element 1 is inserted into the hollow of the injection needle head 111 fitted in the distal end portion 101 of the syringe body 100, and the drug solution is injected from the injection needle 110 into the syringe body 100 The foreign substance contained in the chemical liquid is filtered when the chemical liquid is sucked and the chemical liquid is discharged from the syringe body 100 to the injection needle 110. [

3, the multifilter member 1 is inserted into the hollow of the injection needle head 111, and the multifilter member 1 is inserted into the hollow of the injection needle head 111 into which the syringe body 100 The needle 101 is fixed to the hollow of the injection needle head 111.

At this time, the multiple filter member 1 is sucked through the injection needle 110 by the negative pressure (negative pressure) of the syringe body 100 formed by pulling the plunger 120 to the syringe body 100 (Positive pressure) received in the hollow of the syringe body 100 formed by the pushing of the plunger 120 relative to the syringe body 100 when the drug solution is administered to the patient, And foreign matter that can remain in the chemical liquid discharged into the injection needle 110 is secondly filtered.

In addition, the multifilter member 1 may be configured in various forms as long as it can double filter the chemical liquid sucked into the syringe body 100 and the chemical liquid discharged after being sucked into the syringe body 100, The multifilter member 1 includes a suction / discharge regulator 10 for regulating the flow of the chemical liquid flowing between the hollow of the injection needle 110 and the hollow of the syringe body 100; A suction filter 20 provided on the other side of the suction / discharge regulator 10 for filtering foreign substances contained in the chemical liquid sucked into the hollow of the syringe body 100 from the hollow of the injection needle 110; And a discharge filter (30) provided on the other side of the suction / discharge regulator (10) to filter foreign substances contained in the chemical liquid discharged from the hollow of the syringe body (100) into the hollow needle have.

The suction / discharge regulator 10 controls the flow of the chemical liquid flowing between the hollow of the injection needle 110 and the hollow of the syringe body 100, The liquid can be allowed to flow through the suction filter 20 when the liquid is sucked into the hollow of the syringe body 100 in the hollow (concept including the hollow portion of the injection needle head 111) When the liquid is discharged from the hollow of the syringe body 100 to the injection needle 110, the chemical liquid can flow through the discharge filter 30.

The suction filter 20 is provided on the other side of the suction and discharge regulator 10 so that the foreign substance contained in the chemical solution sucked into the hollow of the syringe body 100 from the hollow of the injection needle 110 As a configuration for filtering, a foreign substance mixed in the chemical liquid at the time of opening the chemical liquid container is prevented from flowing into the hollow of the syringe body 100 together with the chemical liquid.

That is, the suction filter 20 is provided on the other side of the suction / discharge control port 10 corresponding to the portion where the syringe body 100 is located when the portion where the injection needle 110 is located is referred to as one side, The foreign substance contained in the chemical liquid flowing toward the syringe body 100 from the injection needle 110 side is primarily filtered. At this time, the suction / discharge regulating opening 10 is opened so that the chemical liquid flowing in the hollow of the injection needle 110 from the hollow of the syringe body 100 can flow only to the suction filter 20 without flowing into the discharge filter 30 do.

The discharge filter 30 is disposed on the other side of the suction / discharge control valve 10 to filter foreign substances contained in the chemical liquid discharged from the hollow of the syringe body 100 into the hollow needle 110 , And the foreign substance that may remain in the chemical liquid is filtered again when the chemical liquid sucked and stored in the hollow of the syringe body 100 is administered to the human body through the hollow of the injection needle 110.

At this time, the suction / discharge control valve 10 is opened so that the chemical liquid flowing in the hollow of the injection needle 110 from the hollow of the syringe body 100 can flow only to the discharge filter 30 without flowing into the suction filter 20 do.

That is, when the chemical liquid is sucked into the hollow of the syringe body 100 from the hollow of the injection needle 110, the suction / discharge regulator 10 cuts off the flow of the chemical liquid to the discharge filter 30, The foreign substance contained in the chemical liquid sucked by the filter 20 can be filtered through the suction filter 20 and the foreign substance contained in the chemical solution sucked into the hollow of the syringe body 100 The flow of the chemical liquid to the suction filter 20 is blocked so that the chemical liquid can flow only to the discharge filter 30 so that the foreign substances contained in the discharged chemical liquid are filtered through the discharge filter 30, .

In addition, the discharge filter 30 may be formed of a filter capable of filtering foreign substances smaller in size than the suction filter 20. [ That is, a foreign substance having a relatively large particle size contained in the chemical liquid sucked into the hollow of the syringe body 100 through the needle 110 is first filtered by the suction filter 20, Foreign matter having a relatively small particle size included in the chemical liquid discharged from the hollow of the main body 100 into the hollow needle of the needle 110 may be secondarily filtered by the discharge filter 30. [

In this case, as described above, foreign substances having different particle sizes can be filtered by the suction filter 20 and the discharge filter 30, so that it is possible to filter foreign matter having a small particle size from the suction filter 20, It is possible to reduce the amount of the filtered foreign matter to the syringe body 20, thereby increasing the suction speed of the chemical liquid from the hollow syringe needle 110 to the hollow syringe body 100.

In addition, the suction / discharge regulator 10 may be configured in various forms as long as it can control the flow of the chemical liquid flowing between the hollow of the injection needle 110 and the hollow of the syringe body 100 as described above, The suction and discharge regulator 10 is provided with a suction film 11a which is detachably attached to the outer circumference of the hollow sidewall of the injection needle head 111, A drug solution adjusting membrane 11 for sucking the drug solution from the syringe body 100 in the direction of the injection needle 110 with a discharge incision hole 11b formed at the center thereof to be opened and closed; A protruding protrusion 12 protruding from one side of the liquid medicament regulating membrane 11 and forming a chemical liquid flow path 13 between a hollow one side of the needle needle 111 and one side of the liquid medicament regulating membrane 11, And; Is provided on the other side of the liquid medicament regulating membrane 11 so as to be sucked from the injection needle 110 toward the syringe body 100 through the suction membrane 11a while being interposed between the suction membrane 11a and the discharge cut- And a chemical liquid discharge path 16 for discharging the chemical liquid discharged in the direction of the needle 110 from the syringe body 100 is formed on the inner side of the chemical liquid suction path 15, 14). ≪ / RTI >

The suction and discharge regulator 10 having the structure described above is connected to the syringe body 100 through the chemical liquid suction path 15 which is the flow path of the chemical liquid sucked into the hollow of the syringe body 100 from the hollow of the injection needle 110, The chemical solution discharge path 16, which is the flow path of the chemical solution discharged into the hollow of the injection needle 110, is separated from the hollow.

That is, the liquid medicament controlling membrane 11 is provided with a suction membrane 11a, which is detachably attached to the outer circumference of the hollow one side of the injection needle head 111, at its outer circumference to suck the chemical liquid from the injection needle 110 toward the syringe body 100 And a discharging cut-off hole 11b is formed at the center so as to be openable so that the chemical liquid is discharged from the syringe body 100 in the direction of the injection needle 110. [

4, the suction membrane 11a is provided on the outer periphery of the medicament-regulating membrane 11 so as to be attachable to and detachable from the outer circumference of the hollow one side surface of the injection needle head 111, The suction needle head 111 is bent toward the other side by the suction pressure (negative pressure) formed in the hollow of the syringe body 100, so that a part of the outer periphery of the hollow needle side of the injection needle head 111 and the suction membrane 11a are opened So that the chemical solution can flow toward the suction filter 20.

9, when the chemical liquid is discharged from the hollow of the syringe body 100 to the hollow of the injection needle 110, the suction film 11a is discharged to the discharge pressure (positive pressure) formed in the hollow of the syringe body 100, (Returning to the other side from the other side), and the suction film 11a is brought into close contact with a part of the outer periphery of the hollow one side surface of the injection needle head 111 so that the hollow one side of the injection needle head 111 and the suction side The film 11a is in a closed state so that the chemical liquid can flow only toward the discharge filter 30. [

At this time, a step 111a may be formed on the outer circumference of the hollow one side surface of the injection needle head 111 so that it can be easily adhered to one side surface of the suction film 11a.

7, the chemical solution flows from the hollow of the injection needle 110 toward the suction membrane 11a, and the hollow portion of the syringe body 100 When the chemical liquid is discharged into the hollow of the needle 110 from the hollow of the syringe body 100 as shown in FIG. 9, the open state is maintained and the chemical liquid is supplied to the needle 110 To the hollow side of the ink jet recording head.

At this time, when the suction pressure (negative pressure) is formed in the hollow of the syringe body 100, the discharge incision hole 11b maintains the closed state and the discharge pressure (positive pressure) is formed in the hollow of the syringe body 100 9, the central portion 11c of the medicament-regulating film 11 is radially formed around the center of the medicinal-solution adjusting membrane 11 as shown in FIG. 9, When a certain discharge pressure is formed, the drug solution can be discharged in the hollow direction of the injection needle 110 to be discharged. On the other hand, when a predetermined suction pressure is formed, The center portion 11c of the medicament adjusting membrane 11 interrupted by the support body is not opened to the other side so as not to be sucked into the syringe body 100 in the hollow direction.

At this time, the support may be separately provided on the other side of the medicament adjusting membrane 11 to prevent the central portion 11c of the medicament adjusting membrane 11 forming the discharging cutout hole 11b from being opened in the other direction, One side of the discharge filter 30 located on the other side of the chemical liquid control film 11 may serve as the support body and the second discharge filter 40 may serve as the support body.

4, the protruding jaw 12 is protruded from one side surface of the liquid medicament regulating membrane 11 to form a chemical liquid flow between the one side of the hollow needle of the injection needle head 111 and one side of the liquid medicament regulating membrane 11. [ (The same concept as the hollow one side of the injection needle head 111) located at one side of the central portion of the liquid medicament adjusting membrane 11 when the chemical liquid is sucked in. Liquid flow path from the syringe main body 100 to the suction membrane 11a provided on the outer periphery of the medicament-regulating membrane 11 is formed.

In this case, it is preferable that the protruding protuberances 12 have the same protruding height as the protuberance 111a formed on the outer circumference of the hollow one side of the injection needle head 111, If it is constructed, it may be formed as a recessed shape and a certain depth-wise shape.

5A and 5B, a plurality of protruding jaws 12 are provided at the center of the medicament-regulating membrane 11, and one side surface of the medicament-regulating membrane 11 and one side surface of the hollow needle- It is preferable that the chemical liquid flow path 13 formed therebetween is configured to be able to maintain a constant width.

The separation tube 14 is provided on the other side of the chemical liquid control membrane 11 and is interposed between the suction membrane 11a and the discharge cut-off hole 11b and is connected to the needle 110 through the suction membrane 11a. A chemical solution suction path 15 for flowing the chemical solution sucked in the direction of the syringe body 100 is formed on the outer side and a chemical solution discharge path 15 for flowing the chemical solution discharged from the syringe body 100 in the direction of the injection needle 110 16 are formed.

4, the separation pipe 14 may be integrally formed with the chemical liquid control film 11 and may have a tube shape projecting from the other side of the chemical liquid control film 11 toward the other side, And may be configured separately from the other side of the medicament-regulating film 11 so as to be separated and fastened.

At this time, the hollow of the separation pipe 14 communicates with the discharge cutout hole 11b formed in the chemical liquid control film 11 to form the chemical liquid discharge passage 16, and the outer surface of the separation pipe 14, The space formed between the hollow surfaces of the head 111 forms the chemical liquid suction path 15. [

The separation pipe 14 is formed to be equal to or longer than the length of the discharge filter 30 so that the discharge filter 30 is connected to the hollow chemical liquid discharge passage 16 of the separation pipe 14, The length of the discharge filter 30 may be shorter than the length of the discharge filter 30 as shown in FIG. 4 so that only a certain portion of one side of the discharge filter 30 is inserted into the chemical liquid discharge path 16 of the separation tube 14 So as to be fastened.

In this case, the discharge filter 30 may be formed of a block having a circular, elliptic or polygonal cross section, and the chemical liquid discharge path 16 may be formed in a circular shape so that the outer circumference of the discharge filter 30 can be closely fitted, , Elliptical or polygonal cross-section.

In addition, the discharge filter 30 having the above-described structure is formed in the shape of a block body, and an opening groove 33 may be formed at the center of one side or in the middle of the other side in the longitudinal direction. 4, when the opening groove 33 is formed at the center of one side of the discharge filter 30, the area of the discharge surface of the discharge filter 30 through which the chemical liquid passes can be widened, When the opening groove 33 is formed at the center of the other side of the discharge filter 30, the flow rate of the chemical liquid discharged in the hollow direction of the injection needle 110 can be increased, The area of the inflow surface with respect to the inflow chemical liquid can be widened so that the foreign matter can be further filtered on the inflow surface.

When the suction / discharge regulator 10 includes the liquid medicament adjusting membrane 11, the protruding jaw 12 and the separating tube 14 as described above, the suction filter 20 is connected to the chemical liquid suction path 15 .

At this time, the suction filter 20 provided in the chemical liquid suction path 15 is formed in a cylinder shape, and the hollow surface formed in the hollow is fitted to the outer peripheral surface of the other side of the separation tube 14 or the outer peripheral surface of the other side of the discharge filter 30, It is preferable that the outer circumferential surface is configured to be in contact with the hollow inner circumferential surface of the needle head 111 so that the chemical liquid flowing into the chemical liquid suction path 15 can be sucked only through the suction filter 20 and into the hollow of the syringe body 100 Do.

In addition, one end surface 21 of the suction filter 20, which is formed in the cylindrical shape as described above, is inclined so that foreign substances contained in the chemical liquid flowing into the suction filter 20 from the chemical liquid suction path 15 Can be configured to be filtered at one end face (21, inlet face) of a larger area.

In addition, when the suction filter 20 is formed in the shape of a cylinder as described above, the discharge filter 30 is inserted into the hollow of the suction filter 20 in the form of a cylinder, (31); And a support part 32 protruding from the outer circumference of the other side of the cylinder part 31 and supporting the other side of the suction filter 20 fitted to the cylinder part 31.

That is, the cylinder 31 filters the foreign substances contained in the chemical liquid discharged from the hollow of the syringe body 100 into the hollow needle 110 and one side thereof is fastened to the separation tube 14, (30) to the suction / discharge regulator (10) and serves to fasten a cylindrical suction filter (20) to the outer periphery.

At this time, the cylinder 31 may include only a filter capable of filtering foreign substances contained in the chemical liquid, and includes a filter and a case in the form of a cylinder for inserting the filter into the hollow. The cylinder 31, May be formed of a structure capable of further enhancing the supporting force of the substrate.

The support portion 32 is formed to protrude from the outer periphery of the other side of the cylinder portion 31 and supports the other side of the suction filter 20 fitted to the cylinder portion 31. The support portion 32 is provided on the outer periphery of the cylinder portion 31 And the suction filter 20 to be fitted is prevented from being released to the other side.

That is, when the chemical liquid is sucked into the hollow of the syringe body 100 from the hollow of the injection needle 110, the suction filter 20 receives the suction pressure in the direction of the syringe body 100 (i.e., the other direction) The support portion 32 supports the other side of the suction filter 20 so that the suction filter 20 can be moved to the other side of the cylinder portion 31. [ So that it can be prevented from being deviated to the other side.

The support portion 32 may be formed in various shapes when it protrudes from the outer circumference of the other side of the cylinder portion 31. The support portion 32 may be formed in a plurality of shapes such as a plurality of vent holes 32b, And a protruding section 32a of the protruding section 32a.

At this time, the vent holes 32b formed between the plurality of projecting segments 32a serve as a flow path for a chemical solution flowing into the hollow of the syringe body 100 through the suction filter 20, So that the liquid medicine can be smoothly introduced into the hollow of the syringe body 100.

In addition, when the cylinder 31 is composed of a filter and a case, the support portion 32 may be formed on the outer circumference of the other side of the case. The support portion 32 may be made of the same material as the case.

When the discharge filter 30 is formed of a block and is fastened to the chemical liquid discharge path of the separation pipe 14, the chemical liquid control film 11 of the suction / discharge control valve 10 and the discharge filter 30 And a second discharge filter 40 is further provided in the chemical liquid discharge passage 16 of the separation pipe 14 between the first discharge filter 40 and the second discharge filter 40, The central portion 11c of the regulating film 11 may be configured so as not to open to the other side.

That is, the second discharge filter (40) is configured to re-filter the foreign matter that may remain in the chemical liquid that has passed through the discharge filter (30), and can filter out foreign matter having a particle size smaller than that of the discharge filter And the like.

At this time, the second discharge filter 40 is configured to seal the chemical liquid discharge path 16 of the separation pipe 14 and have a diameter that can be inserted therethrough. When the chemical liquid is sucked into the hollow of the syringe body 100 The central portion 11c of the chemical liquid control film 11 forming the discharge cut-out hole 11b by the low suction pressure has a supporting force enough not to be opened in one direction of the second discharge filter 40. [

That is, when the suction pressure is formed in the hollow of the syringe body 100, the central portion 11c of the cut chemical liquid adjusting membrane 11 is interfered with one side of the second discharge filter 40 so as not to open to the other side So that the chemical liquid can only flow toward the suction filter 20 and be sucked in; When the discharge pressure is formed in the hollow of the syringe body 100, the chemical solution which has passed through the discharge filter 30 and the second discharge filter 40 sequentially flows into the center portion of the cut chemical solution adjusting membrane 11 (11c) is pressed in one direction so that the discharge incision hole (11b) can be opened so that the chemical solution can flow into the hollow needle (110).

A preferred embodiment in which a medical chemical filtering apparatus according to the present invention is mounted on a syringe will be described with reference to FIGS. 7 to 10. FIG.

First, the medical liquid filtering apparatus according to the present invention is inserted into the hollow of the injection needle head 111, and the medical person inserts the distal end portion 101 of the syringe body 100 into the injection needle head 111 and fastens the injection needle head 111.

Then, the medical person cuts the head portion of the glass ampoule (chemical liquid container). At this time, the ampoule contains fine glass powder generated at the time of cutting the head portion into the chemical liquid contained in the ampoule.

Then, the medical person inserts the injection needle 110 into the ampoule, and then pulls the plunger 120 of the syringe to form a suction pressure in the hollow of the syringe body 100. The suction force causes the injection needle 110 to hollow into the ampule The received chemical liquid is sucked.

7, the central portion 11c of the chemical liquid regulating film 11 forming the discharge cut-out hole 11b is connected to the discharge filter 30 through the discharge filter 30, The suction pressure of the chemical solution sucked into the hollow needle of the injection needle 110 does not reach the suction filter 20 because the suction force is interrupted by one side of the second discharge filter 40 provided at one side of the suction needle 30, Is sucked into the suction filter 20 after sequentially passing through the chemical liquid flow passage 13, the suction film 11a of the chemical liquid control film 11 (opened by the suction pressure) and the chemical liquid suction passage 15 And is introduced into the hollow of the syringe body 100.

Further, the glass powder contained in the chemical liquid is primarily filtered while passing through the suction filter 20 as shown in FIG.

Thereafter, when a predetermined amount of the medicament to be administered to the patient is filled in the hollow of the syringe body 100, the medical practitioner doses the medicament to the patient. At this time, the clinician inserts the needle 110 into the patient, So that the liquid medicine contained in the hollow of the syringe body 100 by the discharge pressure is discharged into the hollow of the injection needle 110. [

9, the suction membrane 11a provided in the medicament-regulating membrane 11 is connected to the hollow needle of the injection needle head 111, The chemical liquid discharged from the hollow of the syringe body 100 is discharged to the outside through the discharge filter 30 and the second discharge filter 30 40 and an ejection cut-out hole 11b, and is then administered to the patient through the hollow needle 110.

The fine glass powder contained in the chemical liquid discharged from the hollow of the syringe body 100 is completely filtered while passing through the discharge filter 30 and the second discharge filter 40 as shown in FIG. 10, Is administered to the patient.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It is possible to carry out various changes in the present invention.

1: Multiplex filter member 10: Suction / discharge regulator
11: chemical liquid control film 11a: suction film
11b: Discharge cut-out hole 11c: A central portion of the chemical control film
12: protruding jaw 13: chemical liquid flow path
14: Separator tube 15: Chemical liquid suction path
16: chemical liquid discharge path 20: suction filter
21: one end surface 30 of the suction filter; Discharge filter
31: cylinder part 32: support part
32a: projecting piece 32b: vent hole
33: opening groove 40: second discharge filter
100: syringe body 101: distal end of syringe body
110: injection needle 111: injection needle head
111a: step 120: plunger
200: Multidirectional valve

Claims (7)

Is inserted into the hollow of the injection needle head 111 fitted in the distal end portion 101 of the syringe body 100 and is sucked into the syringe body 100 from the injection needle 110 to the syringe body 100, And a multifilter member (1) for filtering the foreign substances contained in the chemical liquid when the chemical liquid is discharged into the needle (110), the apparatus comprising:
The multi-filter element (1)
A suction film 11a is provided on the outer circumference of the needle head 111 so as to be detachable from the outer circumference of the hollow one side of the needle head 111 so that the chemical solution is sucked from the needle 110 toward the syringe body 100, A liquid medicament adjusting film 11 formed on the side surface of the liquid medicament adjusting membrane 11 so as to discharge the liquid medicament from the syringe body 100 in the direction of the injection needle 110, (12) for forming a chemical liquid flow path (13) between a hollow one side surface of the chemical solution regulating membrane (11) and one side surface of the chemical liquid regulating membrane (11) A drug solution suction path 15 for flowing the drug solution sucked in the direction of the syringe body 100 from the injection needle 110 through the suction membrane 11a is formed on the outer side, The drug solution discharged in the direction of the needle 110 from the syringe body 100 flows Separation tube, to form a drug solution discharge (16) (14); a suction and discharge control is configured to include a port 10;
A suction filter 20 which is formed in a hollow cylindrical shape and which is provided on the chemical liquid suction path 15 and filters foreign substances contained in the chemical liquid sucked into the hollow of the syringe body 100 from the hollow of the injection needle 110, ; And
One side of the syringe body 100 is inserted into the separation tube 14 and the other side thereof is inserted into the hollow of the suction filter 20 and the opening groove 33 is formed in the longitudinal direction, A discharge filter (30) for filtering the foreign substances contained in the chemical liquid discharged into the discharge port;
And a second discharge filter (40) provided in the chemical liquid discharge path (16) of the separation pipe (14) between the chemical liquid control film (11) and the discharge filter (30) Medical fluid filtering device.
delete delete delete The method according to claim 1,
The discharge filter (30)
A cylinder part 31 inserted into the hollow of the suction filter 20 in the form of a cylinder, one side of which is engaged with the separation pipe 14;
And a support part 32 protruding from the outer circumference of the other side of the cylinder part 31 and supporting the other side of the suction filter 20 fitted to the cylinder part 31. [ .
The method according to claim 1,
The discharge filter (30)
And is configured to be fastened to the chemical liquid discharge path (16) of the separation pipe (14).
The method according to claim 1,
The second discharge filter (40)
And a central portion (11c) of the medicament-regulating membrane (11) forming the ejection cut-out hole (11b) is configured so as not to open to the other side.
KR1020160022801A 2016-02-25 2016-02-25 Filering apparatus of liquid medicinal for medical treatment KR101744291B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110353991A (en) * 2019-07-25 2019-10-22 江苏苏云医疗器材有限公司 A kind of injection precise filtering device and its filter method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101354451B1 (en) * 2012-12-03 2014-01-28 김근배 A filter syringe
KR101358936B1 (en) * 2013-07-23 2014-02-11 주식회사 아이엠티코리아 Connector type filter for a syringe, syringe with a filter and manufacturing method thereof
KR101419839B1 (en) 2013-12-16 2014-07-15 송태섭 Filter unit for syringe and syringe having the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101354451B1 (en) * 2012-12-03 2014-01-28 김근배 A filter syringe
KR101358936B1 (en) * 2013-07-23 2014-02-11 주식회사 아이엠티코리아 Connector type filter for a syringe, syringe with a filter and manufacturing method thereof
KR101419839B1 (en) 2013-12-16 2014-07-15 송태섭 Filter unit for syringe and syringe having the same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110353991A (en) * 2019-07-25 2019-10-22 江苏苏云医疗器材有限公司 A kind of injection precise filtering device and its filter method
CN110353991B (en) * 2019-07-25 2024-05-14 江苏苏云医疗器材有限公司 Precise filtering device for injection and filtering method thereof

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