KR20080104487A - Filter device and medicine injection apparatus comprising the same - Google Patents

Filter device and medicine injection apparatus comprising the same Download PDF

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Publication number
KR20080104487A
KR20080104487A KR1020070051334A KR20070051334A KR20080104487A KR 20080104487 A KR20080104487 A KR 20080104487A KR 1020070051334 A KR1020070051334 A KR 1020070051334A KR 20070051334 A KR20070051334 A KR 20070051334A KR 20080104487 A KR20080104487 A KR 20080104487A
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South Korea
Prior art keywords
opening
fluid
closing member
filter
filter device
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KR1020070051334A
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Korean (ko)
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KR100902784B1 (en
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김용무
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김용무
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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

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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)
  • Filtration Of Liquid (AREA)

Abstract

A filter device, and an injection injecting device containing the filter device are provided to allow the impurities to be filtered completely by forming vortex with passing the fluid through with a constant velocity irrespective of the kind and viscosity of fluid. A filter device(300) comprises an inlet pipe(312) which has an inlet hole(311) connected with a fluid supply line and flows the fluid flown through the inlet hole into the filter device; a filter housing(320) which is connected with the inlet pipe and goes through the outside; and an opening/closing member(313) which is located inside the filter housing, forms a trap space part(319) and opens/closes the inlet pipe, wherein the opening/closing member converts the fluid into the direction other than the inflow direction from the inlet pipe when the inlet pipe is opened by the inflow of fluid so as to guide it to the trap space part, and the fluid is flown into the filter housing after the impurities contained in the fluid is removed in the trap space part.

Description

Filter device and injection liquid injection device having the same {FILTER DEVICE AND MEDICINE INJECTION APPARATUS COMPRISING THE SAME}

1 is a cross-sectional view illustrating a filler device of a conventional injection liquid injector.

Figure 2 is a perspective view showing a schematic appearance of the filter device according to the present invention.

3 is a perspective view showing the internal structure of the filter device according to the present invention after cutting it in the horizontal direction, showing the main components of the filter device.

4 is an exploded perspective view of the filter device shown in FIG.

5 (a) of FIG. 5 is a planar cross-sectional view viewed from above after cutting the filter device according to the present invention along the line A-A ', Figure 5 (b) shows the line B-B' filter device It is a side sectional view seen from the side after cutting along.

6 (a) of Figure 6 is a perspective view of the inlet module of the filter device according to the present invention, Figure 6 (b) is a front view of the inlet module.

7A is a perspective view of a housing portion of the filter apparatus according to the present invention, and FIG. 7B is a sectional view taken from the front after cutting the housing portion along the line CC ′.

* Explanation of symbols for the main parts of the drawings

300: filter device

310: inlet module 311: inlet

312: inlet pipe 313: semi-monthly opening and closing means

319: trap space portion 320: filter housing

322: gas discharge hole 323: gas-friendly filter

330: outlet module 331: outlet

332: outlet pipe 333: cross-shaped opening and closing means

410: adapter 412: capillary

414: outflow injection liquid supply line

The present invention relates to a filter device, and more particularly, a filter that does not block air or impurities in the fluid itself, and filters out impurities while reliably filtering the fluid at a constant rate regardless of the type and viscosity of the fluid. Relates to a device. In addition, the present invention relates to a filter device that is configured as a detachable part or module, which is simple to manufacture, flexibly adjusts to manufacturing tolerance problems, and which is easy to maintain. In addition, the present invention relates to an injection liquid injection device comprising such a filter device.

In general, patients often need to be constantly injected with injections. At this time, the injection liquid injection device is used, the injection liquid injection device includes a filter device for removing foreign matter and air contained in the injection liquid.

The conventional filter device is composed of a liquid-friendly filter and a gas-friendly filter to remove foreign substances and air in the injection liquid. And, these filters are configured to block the passage of the injection liquid so that the injection liquid passes directly through the filters. Therefore, in the conventional filter device, when the viscosity of the injection liquid flowing in is high, the flow rate and flow rate of the injection liquid flowing out of the filter device are greatly reduced.

This causes delivery rate problems for drugs that need to be injected at a constant rate, such as analgesics and antibiotics, and consequently problems at the proper dosage of the drug. Therefore, the conventional filter device has a problem in that it is not applicable to an injection liquid having a relatively high viscosity or a particle having a relatively large size dissolved in the injection liquid.

In addition, the conventional filter device has a problem that the injection of the injection is interrupted because the injection solution passes directly through the air or impurities contained in the injection block the filter itself.

In order to overcome this problem, the present inventor has proposed an end connector including a filter device of a new configuration (see Fig. 1). This new device omits the liquid-friendly filter to solve the problems described above and is not a way of injecting liquid directly through the filter. An example of such a new device is disclosed in Korean Patent Application No. 10-2006-33027. Nevertheless, as with any good technology, constant improvements can be made.

As shown in Fig. 1, in the filter device of the new configuration, the flow rate increases when the injection liquid flows into the communication hole 206a and then passes through the inlet 214 having a smaller diameter than the communication hole. The injection solution with an increased flow rate is suddenly introduced into the internal space of the filter function 210 which is widened. The injection solution, excluding foreign matter and air, passes straight through the outlet 218a of the internal protrusion pipe 218 by a high flow rate. On the other hand, the injection liquid containing foreign matter and air moves to the outside of the inner space by the difference in weight and specific gravity. On the other hand, the injection liquid containing the foreign matter and air moved to the outside of the inner space portion passes between the guide portion 218c and the guide portion 216 corresponding to the tip of the inner protruding tube 218 and moves to the left and right inner space portion Then, it flows into the trap space 219 past the blocking projection 218d. At this time, the injection liquid forms a vortex in the closed trap space portion 219 while foreign matter contained in the injection liquid is collected in the trap space portion 219. In addition, the air contained in the injection liquid moved to the left and right inner space is first passed through the gas-friendly filter and then discharged to the outside through the gas discharge hole is removed. As a result, the injection solution from which foreign substances and air are removed is continuously supplied.

However, although the conventional filter device devised by the present inventors has an excellent function, there is a problem to be improved as follows.

First, the filter device guides the injection liquid flowing through the inlet 214 into the internal space portion to the trap space portion, forms a vortex to collect and remove foreign substances or air contained in the injection liquid, but proceeds straight to the internal protrusion pipe 218. Some injection solution passing through the outlet (218a) of the) had a problem that may contain foreign matter or air.

Second, in the filter device, since the guide shape part, the guide shape part, and the blocking protrusion part forming the trap space part must be molded integrally with the filter device, it is not easy to manufacture and cannot flexibly cope with the problem of manufacturing tolerances. There was a problem that the manufacturing cost is increased.

The present invention was devised to solve the above problems, and air or impurities in the fluid do not block the filter itself, and impurities are reliably filtered while passing the fluid at a constant speed regardless of the type and viscosity of the fluid. The purpose is to provide a filter device.

In addition, the present invention is to provide a filter device that is configured as a separate separate component or module is easy to manufacture and flexibly adjust the manufacturing tolerance problem, the cost is reduced at the time of manufacture and easy to maintain.

Specifically, the present invention prevents the fluid from flowing directly from the inlet to the inner space of the filter device by the opening and closing member, the fluid is formed through the trap space portion structure formed by the opening and closing member to collect the impurities after It is an object of the present invention to provide a filter device having a significantly improved performance in collecting and removing foreign substances by allowing them to enter the interior space of the housing.

In addition, the present invention has a modular configuration consisting of the inlet module, the filter housing and the outlet module, it is possible to repair the device through the replacement and repair of the corresponding module only if there is damage to the device to maintain the device The purpose is to provide a filter device that can provide convenience and cost savings.

In addition, an object of the present invention is to provide an injection liquid injecting device having a filter device having the features as described above.

The above objects and various advantages of the present invention will become more apparent from the embodiments of the invention described below with reference to the accompanying drawings by those skilled in the art.

The filter device of the present invention is connected to the fluid supply line to filter the fluid flowed in and out,

An inlet pipe having an inlet communicated with the fluid supply line and flowing fluid introduced through the inlet port into an internal space of a filter device;

A filter housing connected to the inlet pipe and communicating with the outside;

An opening and closing member positioned inside the filter housing to form a trap space and opening and closing the inlet pipe, and when the inlet pipe is opened by the inflow of the fluid, the fluid is switched in a direction different from the inflow direction from the inlet pipe. And an opening / closing member for guiding to the trap space part and flowing the fluid into the inner space of the filter housing after the foreign matter contained in the fluid is collected in the trap space part.

In one embodiment of the present invention, the opening and closing member includes a guide shaft slidably coupled to the inlet pipe and an extension portion extending from the guide shaft extending in an arc shape.

In one embodiment of the present invention, the opening and closing member is characterized in that the guide shaft is guided by the inlet pipe to open and close the inlet pipe by moving back and forth with respect to the inflow direction of the fluid.

Specifically, the opening and closing member is formed through the space between the inlet pipe and the guide shaft after forming a first gap between the front end of the inlet pipe and the extension when the fluid is moved forward by the force of the inflow The incoming fluid is guided to the trap space through the first gap. Then, the fluid exiting through the first gap is changed in the flow direction by the arc-shaped extension part to form a vortex in the trap space part.

In addition, the opening and closing member forms a second gap between the end portion of the arc-shaped extension part and the inner wall of the filter housing, and the filter housing collects the fluid collected in the trap space through the second gap. It will be spilled into the internal space of the.

In one embodiment of the present invention, the inlet pipe has a separation prevention jaw is formed on the inner wall of the front end portion, the guide shaft of the opening and closing member may be a stepped portion formed at its distal end. In detail, the stepped portion is coupled to the release preventing jaw in a manner that it can be coupled to limit the size of the first gap when the opening and closing member moves forward and can prevent the opening and closing member from being separated from the inlet pipe.

In one embodiment of the present invention, the opening and closing member is preferably formed of a silicon material.

In another embodiment of the present invention, the filter housing further comprises an outlet tube communicating with the filter housing and disposed at a position opposite to the inlet tube to transfer the fluid escaped from the trap space to the outside. It is preferable.

In addition, according to another embodiment of the present invention, the opening and closing member which is located inside the filter housing to open and close the outlet pipe, the opening and closing member for opening the outlet tube by the flow of fluid from the trap space portion It is more preferable to further include.

According to another embodiment of the present invention, the opening and closing member may include a guide shaft slidably coupled to the outlet pipe and an extension portion extending from the guide shaft to cross shape. The opening and closing member may open and close the outlet pipe by guiding the guide shaft by the outlet pipe and moving forward and backward with respect to the inflow direction of the fluid. Specifically, the opening and closing member forms a gap between the distal end of the outlet pipe and the extension part when the opening and closing member is moved to the rear by the flow of the fluid exiting from the trap space portion, the fluid through the gap through the outlet pipe Can be introduced.

Additionally, in another embodiment of the present invention, a passage is formed in the center of the guide shaft of the opening and closing member in a longitudinal direction thereof, and the fluid may be introduced into the outlet pipe through the passage.

In another embodiment of the present invention, the outlet pipe is formed with a separation prevention jaw on the inner wall of the distal end portion, the guide shaft of the opening and closing member may be formed with a stepped portion at its tip. In detail, the stepped portion is coupled to the release prevention jaw in a manner that it can be coupled to limit the size of the gap when the opening and closing member is moved to the rear and can prevent the opening and closing member from being separated from the outlet pipe.

In another embodiment of the present invention, the opening and closing member is preferably formed of a silicon material.

In another embodiment of the present invention, it may further include a gas-friendly filter located in the filter housing. In another embodiment of the present invention, at least one gas discharge hole may be provided in the filter housing of the portion where the gas-friendly filter is located.

In a preferred embodiment of the present invention, the inlet pipe, the filter housing and the outlet pipe may be formed as individual components or modules and then detachably coupled.

In addition, the injection liquid injection device of the present invention is characterized by comprising a filter device as described above.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings without limiting the present invention by way of example only.

As shown in Figure 2, the filter device 300 of one embodiment of the present invention is connected to a ringer bottle and the like extending, and the terminal connection port that is detachably coupled to the needle or catheter inserted into the patient side or It is installed between the extension tube.

As shown in FIGS. 2 to 7, the filter device 300 is largely composed of an inlet module 310, a filter housing 320, and an outlet module 330.

3 to 6, the inlet module 300 has an inlet 311 at one end thereof in communication with the inlet side injection liquid supply line, and at the other end of the inlet module 311 for the injection liquid introduced through the inlet 311. It has an inlet pipe 312 for flowing into the filter device. 3 to 6, the inlet pipe 312 illustrated in FIG. 3 protrudes toward the inner space 321 of the filter housing 320 when assembled with the filter housing 320, but the present invention is not limited thereto. no.

As shown in FIGS. 3 to 5 and 7, the filter housing 320 forms its exterior by an upper plate and a lower plate having a gently convex shape, and the inside in which fluid flows through the upper plate and the lower plate. The space part 321 is formed.

3 to 5, the outlet module 330 has an outlet port 331 communicating at one end thereof with the outlet side injection solution supply line 414, and at the other end thereof, the injection solution introduced into the filter device. The outflow pipe 332 which transfers this to the outlet 331 is provided. The outlet pipe 332 is disposed to face the inlet pipe 312 in the inner space portion 321 of the filter housing 320 when assembled together with the filter housing 320.

One end of the filter housing 320 is detachably hermetically coupled to the inlet module 310, and the other end is detachably hermetically coupled to the outlet module 330 (see FIGS. 2 and 3).

As shown in FIG. 4, the inlet module 310, the filter housing 320, and the outlet module 330 are provided as separate modules that can be separated from each other, and are introduced from the oil inlet 311 of the inlet module 310 as a whole. The injection liquid is configured to flow through the outlet 331 of the outlet module 330 via the inner space portion 321 formed by the filter housing 320.

The inlet module 310 includes an inlet port 311 communicated with an inlet side injection solution supply line (not shown), and the injection solution introduced through the inlet port 311 through an inlet pipe 312 communicating with the inlet port. It flows into the filter device 300.

At the distal end of the inlet pipe 312, the injected injection liquid does not flow directly into the inner space portion 321 of the filter housing 320 and at the same time the track space together with the inlet pipe 312 and the filter housing 320 Half moon type opening and closing means 313 forming a portion 319 is coupled (see Figs. 3 and 4).

In addition, the half moon type opening and closing means 313 is composed of a guide shaft 313b slidably coupled to the inlet pipe 312 and an extension 313a branching from the guide shaft and extending in an arc shape (Fig. 4). Reference). Among them, the extension part 313a is disposed such that its outer side line faces the outflow module 330, and the protruding guide shaft 313b of the half moon type opening and closing means 313 in the direction toward the inflow module 310. It is formed in the center. The protruding guide shaft 313b is fitted to the inlet pipe 312, but an injection liquid is provided between the largest outer diameter of the guide shaft (protruded in the left and right directions) and the inner wall of the inlet pipe 312. There is enough space to flow a small amount. The opening and closing means 313 is slightly lifted by the hydraulic pressure of the injected injection liquid when the injection liquid flows from the inlet 311 to form a predetermined gap.

In this regard, the inlet pipe 312 is formed with a separation prevention jaw 3121 on the inner wall of the tip end, and the guide shaft 313b of the opening and closing member has a step 3131 is formed at the distal end thereof (see Fig. 5). . The stepped portion 3131 is engaged with the release preventing jaw 3121 by engaging, so that the opening and closing member 313 moves forward to limit the size of the predetermined gap and the opening and closing member 313 is separated from the inlet pipe 312. Prevent deviations.

The half moon type opening and closing means 313 is preferably large enough to block most of the passage through which the injection liquid passes between the inflow module 310 and the filter housing 320. By inserting the half moon type opening and closing means 313 in the inlet pipe 312, the flow of the injection liquid from the inlet module 310 in a straight direction is blocked, while between the inlet module 310 and the filter housing 320 A trap space portion 319 is formed along the inner arc of the extension portion 313a of the half moon type opening and closing means 313 (see FIG. 3). Therefore, the injected injection liquid does not flow directly into the inner space 321 of the filter housing 320 through the inlet pipe 312, but little by little through a gap formed between the opening and closing means 313 and the tip of the inlet pipe 312. As it exits, it is guided along the inner arc of the meniscus opening and closing means 313, wherein foreign matter contained in the injection liquid is collected in the trap space 319 by the difference in weight and specific gravity.

In addition, the reverse flow of the injection liquid is firstly blocked by the half moon type opening and closing means 313, and the back flow of the injection liquid is prevented once again by the trap space portion 319 formed by the half moon type opening and closing means 313.

Filter housing 320 has a gas-friendly filter 323 to be fixed to the upper or lower plate, the air contained in the injection solution passed through the track space portion 319 by the gas-friendly filter 323 Removed (see FIGS. 5 and 7). One or more gas discharge holes 322 are provided in the filter housing 320 provided with the gas-friendly filter 323 to discharge the air collected by the gas-friendly filter 323 to the outside (FIG. 2 and FIG. 2). 7).

As shown in Figures 3 to 5, the cross-shaped opening and closing means 333 is coupled to the distal end of the outlet pipe 332 of the outlet module 330. The cross-shaped opening and closing means 333 includes a guide shaft 333a slidably coupled to the outlet pipe 332 and an extension portion 333b extending from the guide shaft in a cross shape to form a cross consisting of four protrusions. It takes the shape (refer FIG. 4). One of the four protrusions of the cross-shaped opening and closing means 333 is coupled in a fitting manner while forming a gap through which the injection liquid can be introduced between the outlet pipe 332. In the center of the guide shaft of the cross-shaped opening and closing means 333, a narrow passage 333c is formed in the longitudinal direction thereof, through which a small amount of fluid passes and flows into the outlet pipe 332 (see FIG. 4). Since the passage 333c is small in diameter, it is possible to filter out impurities having a relatively large size (see FIG. 3).

In addition, the cross-shaped opening and closing means 333 may be moved to the rear slightly by the flow of the fluid exiting from the trap space 319, wherein a predetermined distance between the end of the outlet pipe 332 and the extension portion 333b. A gap is formed (see Fig. 3). As a result, most of the injection liquid that has passed through the trap space 319 is further blocked by the cross-shaped opening and closing means 333 to the outlet pipe 332, and flows along the outer surface of the cross-shaped opening and closing means 333. After being guided by flowing along both sides of the inner space part 321 of the filter housing 320, it is introduced into the outlet pipe 332 through a gap formed between the cross-shaped opening and closing means 333 and the outlet pipe 332. Then, the injection liquid introduced into the gap between the cross-shaped opening and closing means 333 and the outflow pipe 332 is transferred to the outlet port 331 of the outflow module 330 communicated with the outflow pipe 332, and eventually outflow. Injection liquid is supplied through the side injection liquid supply line 414.

In this regard, the outflow pipe 332 has a separation prevention jaw 3321 formed on the inner wall of the distal end portion, and the stepped portion 3331 is formed at the distal end of the guide shaft 333a of the cross-shaped opening / closing member (see FIG. 5). ). The stepped portion 3331 is engaged with the release preventing jaw 3321 in such a way that when the cross-shaped opening and closing member 333 moves backward, the size of the predetermined gap is restricted and the cross-shaped opening and closing member 333 is an outlet pipe 332. To prevent deviation from

Meanwhile, the adapter 410 may be selectively coupled to the outlet 331, and the filter device 300 and the outlet side injection solution supply line 414 may be connected to each other through the adapter 410. Optionally, a capillary tube 412 may be provided between the adapter 410 and the outlet injection liquid supply line 410 to further remove impurities in the injection liquid.

Hereinafter, the operation of the filter device according to the present invention having the configuration as described above will be described.

The injection liquid is introduced into the inlet tube 312 of the inlet module 310 by passing through the inlet port 311 of the filter device 300 connected to the inlet injection solution supply line along an extension tube from an injection solution storage place such as Ringer's bottle.

The introduced injection liquid slightly advances the half-moon opening and closing means 313 coupled in a fitting manner to the distal end of the inflow pipe 312 in the inflow direction of the injection liquid, and extends the tip of the inflow pipe 312 and the half moon opening and closing means 313. A predetermined gap is formed between the portions 313a. The injection liquid flows into the filter housing 320 through the gap formed in this way, but the injected injection liquid flows out by the half moon type opening and closing means 313 which mostly blocks a passage between the inflow module 310 and the filter housing 320. Direct flow to module 330 is blocked. That is, the injected injection liquid does not flow directly into the inner space portion 321 of the filter housing 320 after passing through the inflow pipe 312, but instead of the arcuate extension 313a and the inflow pipe 312 of the half moon opening and closing means 313. It is guided along the arced inner arc of the half moon type opening and closing means 313 while gradually exiting through the gap formed between the tips.

The inner arc of the extension portion 313a of the half moon type opening and closing means 313 itself forms a trap space portion 319 inside the filter housing 320. The injection liquid guided along the arched inner line while gradually exiting through the gap flows into the trap space portion 319 formed as described above to form a vortex, and the foreign matter contained in the injected injection liquid has a difference in weight and specific gravity. By the trap space portion 319.

The injection solution from which the foreign matter is removed from the trap space 319 is formed inside the filter housing 320 through small passages formed between both ends of the arcuate extension part 313a of the half moon opening / closing means 313 and the inner wall of the filter housing 320. It flows into the space 321. At least one gas discharge hole 322 is formed at a predetermined position of the upper or lower plate of the filter housing 320, and a gas-friendly filter 323 is provided for the gas discharge holes 322 (FIG. 2, FIG. 5 and FIG. 7). Therefore, the air contained in the injection liquid flowing to the inner space portion 321 of the filter housing 320 is first passed through the gas-friendly filter 323 and then discharged to the outside through one or more gas discharge hole 322 Removed.

On the other hand, the cross-shaped opening and closing means 333 is attached to the end of the outlet pipe 332 of the outflow module 330 by fitting while forming a gap between the outlet pipe 332. The cross-shaped opening and closing means 333 may be moved to the rear slightly by the flow of the injection liquid introduced into the inner space 321, wherein the predetermined opening between the end of the outlet pipe 332 and the extension portion 333b of the cross-shaped opening and closing means. A gap is formed. Most of the injection solution is further blocked by the cross-shaped opening and closing means 333 to the outflow pipe 332, and flows along the outer surface of the cross-shaped opening and closing means 333 or the inner space portion 321 of the filter housing 320. After being guided along the both sides of the), it is introduced into the outlet pipe 332 through a gap formed between the cross-shaped opening and closing means 333 and the end of the outlet pipe 332.

The injection liquid introduced into the gap between the cross-shaped opening and closing means 333 and the distal end of the outlet pipe 332 is transferred to the outlet port 331 of the outlet module 330 in communication with the outlet pipe 332, and eventually, the outlet injection liquid Injection fluid is supplied to the patient via a supply line 414.

Therefore, the filter device of the present invention can form a trap space portion 319 to form a vortex simply by providing a semi-wall type opening and closing means 313 manufactured as a separate component to the filter device, thereby collecting and removing foreign substances. In addition, it can provide excellent performance to completely remove foreign substances and air that should not be injected into the patient.

In addition, the filter device according to the present invention has a modular configuration consisting of inlet module, filter housing and outlet module, it is possible to repair the device through the replacement and repair of the corresponding module only if there is damage to the device It can provide convenience and cost saving in maintenance.

As mentioned above, although this invention was demonstrated to the said Example, this invention is not limited to this. Those skilled in the art can make modifications and changes without departing from the spirit and scope of the present invention, and it will be appreciated that such modifications and changes also belong to the present invention.

According to the present invention, air or impurities in the fluid do not block the filter itself, and impurities can be reliably filtered out while the fluid passes at a constant rate regardless of the type and viscosity of the fluid.

Specifically, the filter device of the present invention prevents the fluid from flowing directly from the inlet port into the housing interior of the filter device by the opening and closing member, and forms a vortex through the trap space portion structure formed by the opening and closing member to form impurities. By being collected and then introduced into the interior space of the housing, it shows a much improved performance in collecting and removing foreign matter.

In addition, the filter device of the present invention forms a trap space structure only by attaching a half-wall type opening and closing member to collect and remove foreign substances, thus eliminating the need to form a unitary body as in the prior art, thereby making manufacturing easier and reducing manufacturing costs. While being able to solve the problem of manufacturing tolerances due to integral molding.

In addition, the present invention has a modular structure having an inflow module, a filter housing and an outflow module, and can be easily maintained by replacing and repairing only a corresponding module in case of damage to the device, thereby providing convenience in maintenance. It can have the effect of providing cost reduction.

Claims (22)

In the filter device that is connected to the fluid supply line to filter the introduced fluid outflow, An inlet pipe having an inlet communicated with the fluid supply line and flowing fluid introduced through the inlet port into an internal space of a filter device; A filter housing connected to the inlet pipe and communicating with the outside; An opening and closing member positioned inside the filter housing to form a trap space and opening and closing the inlet pipe, and when the inlet pipe is opened by the inflow of the fluid, the fluid is switched in a direction different from the inflow direction from the inlet pipe. And an opening / closing member for guiding to the trap space part and for flowing the fluid into an inner space of the filter housing after the foreign matter contained in the fluid is collected in the trap space part. The method of claim 1, And the opening and closing member includes a guide shaft slidably coupled to the inlet pipe and an extension part branching from the guide shaft and extending in an arc shape. The method of claim 2, The opening and closing member is a filter device, characterized in that the guide shaft is guided by the inlet pipe to open and close the inlet pipe by moving in the front and rear direction with respect to the inflow direction of the fluid. The method according to claim 2 or 3, The opening / closing member forms a first gap between the front end of the inflow pipe and the extension part when the fluid moves forward by the inflow force, and then the fluid flows through the space between the inflow pipe and the guide shaft. Filter apparatus for guiding the trap space through the first gap. The method of claim 4, wherein And a fluid flowing out through the first gap is changed in flow direction by the arc-shaped extension part to form a vortex in the trap space part. The method of claim 5, The opening and closing member forms a second gap between the distal end of the arc-shaped extension part and the inner wall of the filter housing, and the fluid trapped with foreign matter in the trap space is formed inside the filter housing through the second gap. A filter device, characterized in that outflow to the space. The method of claim 4, wherein The inlet pipe has a separation prevention jaw is formed on the inner wall of the distal end portion, and the guide shaft of the opening and closing member is characterized in that the stepped portion is formed at its distal end. The method of claim 7, wherein The stepped portion is coupled to the release preventing jaw is coupled to the filter device, characterized in that to limit the size of the first gap when the opening and closing member moves forward and to prevent the opening and closing member is separated from the inlet pipe. The method according to any one of claims 1 to 3, The opening and closing member is a filter device, characterized in that formed of silicon material. The method according to any one of claims 1 to 3, And an outlet tube having an outlet port communicating with the filter housing, the outlet tube being disposed at a position opposite to the inlet tube to transfer the fluid exiting from the trap space to the outside. The method of claim 10, And an opening and closing member positioned inside the filter housing to open and close the outlet pipe, the opening and closing member opening the outlet pipe by the flow of fluid exiting from the trap space. The method of claim 11, And the opening and closing member includes a guide shaft slidably coupled to the outlet pipe and an extension part branched from the guide shaft and extending in a cross shape. The method of claim 12, The opening and closing member is a filter device, characterized in that the guide shaft is guided by the outlet pipe to open and close the outlet pipe by moving in the front and rear direction with respect to the inflow direction of the fluid. The method of claim 13, The opening / closing member forms a gap between the distal end of the outlet pipe and the extension part when moved back by the flow of the fluid exiting from the trap space, and then introduces the fluid into the outlet pipe through the gap. Filter device, characterized in that. The method of claim 12, Filter unit, characterized in that the passage in the longitudinal direction in the center of the guide shaft of the opening and closing member. The method of claim 14, The outflow pipe has a separation preventing jaw is formed on the inner wall of the distal end portion, and the guide shaft of the opening and closing member is a filter device, characterized in that the stepped portion is formed at the tip end. The method of claim 16, The stepped portion is coupled to the release preventing jaw is coupled to the filter device, characterized in that for limiting the size of the gap when the opening and closing member moves to the rear and prevents the opening and closing member is separated from the outlet pipe. The method of claim 13, The opening and closing member is a filter device, characterized in that formed of silicon material. The method according to any one of claims 1 to 3, Filter device further comprising a gas-friendly filter located in the filter housing. The method of claim 19, At least one gas discharge hole is provided in the filter housing of the portion where the gas-friendly filter is located. The method of claim 10, The inlet pipe, the filter housing and the outlet pipe is configured as a module, characterized in that the filter device is detachably coupled. An injection liquid injection device comprising a filter device as defined in any one of claims 1 to 21.
KR1020070051334A 2007-05-28 2007-05-28 Filter device and medicine injection apparatus comprising the same KR100902784B1 (en)

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KR101301932B1 (en) 2011-08-11 2013-08-30 이재신 A filter syringe with valve
KR101247145B1 (en) 2012-10-08 2013-04-02 천진호 Safety filter for syringe and syringe with the same
KR101335979B1 (en) 2013-04-08 2013-12-03 천진호 Filter hub assembly for aspirating and injecting liquid medicine
KR101680514B1 (en) 2016-03-22 2016-11-28 라용국 Filtering syringe

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US4332249A (en) 1980-08-01 1982-06-01 Sherwood Medical Industries, Inc. Filter and valve assembly for hypodermic syringe
JPH05503236A (en) * 1990-08-29 1993-06-03 バトラー，ジョン・ヘンリィ・アダム valve for syringe
CA2503156A1 (en) * 2002-10-29 2004-05-13 Vasogen Ireland Limited Device and method for controlled expression of gases from medical fluids delivery systems
KR100893365B1 (en) * 2006-04-12 2009-04-17 김용무 Needle connecting device, filter device and medicine injection apparatus comprising the filter device

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