KR20240017188A - Cerebrospinal fluid drainage apparatus - Google Patents

Abstract

The present invention relates to an extraventricular drainage device, and in particular, to an extraventricular drainage device that not only facilitates securing and measuring a certain amount of cerebrospinal fluid drainage depending on the patient, but also facilitates controlling the discharge rate of cerebrospinal fluid.
The extraventricular drainage device (1000) of the present invention includes a clamp means (1100) that can be inserted into the pillar of the infusion holding stand (1) and fixed in a certain position, and is fixed to the infusion holding stand via the clamp means, while T An uneven scale ratchet 1230 is formed on the front surface where the type chamber lifting and lowering guide groove 1220 is formed, while a scale 1200 is provided with a scale 1240 next to the scale ratchet to indicate the height. And, it is provided to form the upper part of the chamber at a predetermined position of the chamber guide 1311, which is inserted into the T-type chamber lifting and lowering guide groove 1220 and assembled to move up and down, and protrudes from one side of the chamber guide. It is assembled on the upper part of the chamber 1300, which indicates the height position and can check the state of cerebrospinal fluid inflow, and the chamber guide that constitutes the chamber, so that the chamber 1300 can be raised and lowered to the top and bottom of the scale. It includes a chamber guide fixing means (1400) and a drainage bag fixing means (1500) whose upper part is inserted into the lower part of the chamber and is capable of fixing the drainage bag (2) to the lower part.

Description

{Cerebrospinal fluid drainage apparatus}

The present invention relates to an extraventricular drainage device for discharging cerebrospinal fluid within the brain parenchyma to the outside of the body. More specifically, the present invention relates to an extraventricular drainage device that not only facilitates securing and measuring a certain amount of cerebrospinal fluid drainage depending on the patient, but also facilitates controlling the discharge rate of cerebrospinal fluid. It relates to an extraventricular drainage device.

In general, there is a condition called hydrocephalus, in which cerebrospinal fluid abnormally accumulates within the skull faster than it can be withdrawn by the body. Patients with this condition suffer from excessive accumulation of cerebrospinal fluid, which puts pressure on brain tissue. Ultimately, it causes brain damage.

Hydrocephalus is typically treated by implanting a shunt in fluid communication with the ventricle within the brain to withdraw cerebrospinal fluid at a desired rate. Typically, the rate of withdrawal of cerebrospinal fluid, also referred to as “CSF,” is controlled by a valve with various pressure settings that the clinician adjusts prior to surgery.

These external CSF drainage systems are typically used in clinical settings when it is desirable to drain CSF via a catheter into an external "closed" collection system to prevent infection of the CSF during management of intracranial pressure. Removal of too much CSF through a catheter, or “over-drainage,” is undesirable and can cause severe headaches or collapse of one or more ventricular cavities within the brain. To reduce the risk of over-drainage, doctors typically drain CSF at a rate of 10 to 50 ml per hour.

Excessive withdrawal of CSF can also result in “over-filling” of the external drainage system. A variety of problems can result from over-filling, including leakage of fluid from the system and infection through the pathways provided by the leaking fluid.

Many conventional drainage systems roughly control the rate of CSF flow by adjusting the height above the patient's head or spine at which the system is positioned. In other words, gravity and fluid pressure generated within the patient and within the system affect the flow rate into the collection chamber. If the height of the system is lowered in relation to the height of the catheter entering the patient, for example when the patient is sitting up from prone, the flow may increase unexpectedly.

Therefore, the height of the CSF drainage system must be adjusted according to the patient's condition. Not only is it not easy to fix the CSF drainage system, but medical personnel such as doctors and nurses are required when adjusting the height of the CSF drainage system to control the discharge rate of cerebrospinal fluid. On the one hand, it was inaccurate because it was controlled with the eye, and on the other hand, there were various problems that made it difficult to measure the small amount of cerebrospinal fluid discharged because the lower part of the chamber was sharp.

Reference: Republic of Korea Patent Publication No. 10-2015-0113924 Title of invention “External volume limited CF drainage system”.

The present invention was developed to solve the above-mentioned requirements, and provides an extraventricular drainage device that not only facilitates securing and measuring a certain amount of cerebrospinal fluid drainage depending on the patient, but also facilitates controlling the discharge rate of cerebrospinal fluid. There is a purpose to it.

The extraventricular drainage device according to the present invention for achieving the above object includes a clamp means consisting of a plurality of clamps and a fastening member that can be fixed in a certain position by inserting it into the pillar of the infusion holding stand, and the clamp means. A plurality of T-shaped coupling protrusions formed in a direction perpendicular to the pillar on the back surface to be inserted into the T-shaped coupling groove of the clamp, a T-shaped chamber lifting and lowering guide groove formed at a certain length from the top to the bottom, and this T-shaped chamber lifting and lowering guide groove. A scale ratchet in the form of an uneven shape is formed on the front surface of this formation, while a scale equipped with a scale provided to indicate the height is placed next to this scale ratchet, and a scale is inserted into the T-type chamber lifting and lowering guide groove so that it can move up and down. In addition to being provided to configure the upper part of the chamber at a predetermined position of the chamber guide, a chamber that protrudes from one side of the chamber guide to indicate the height position and to check the state of cerebrospinal fluid flowing in, and a chamber that constitutes the chamber When it is assembled on the top of the chamber guide and the fixing cap fixing screw is fastened, the fixing cap is inserted into the scale ratchet and fixed. When the fixing cap fixing screw is loosened, the fixing cap is separated from the scale ratchet and the chamber is raised and lowered to the top and bottom of the scale. It includes a chamber guide fixing means that allows the chamber guide to be fixed to the lower part of the chamber, and a drainage bag fixing means that has the upper part inserted into the lower part of the chamber and allows the drainage bag to be fixed to the lower part via a 3-way valve for discharge and a maillure lock.

Here, the chamber includes a chamber guide that is inserted into the chamber lifting and lowering guide groove and assembled to move up and down, a chamber cap provided at a predetermined position of the chamber guide to form the upper part of the chamber, and a chamber cap installed on one side of the chamber guide. a chamber upper guide member having an indicator protruding to indicate the height position; a transparent chamber cylinder assembled with adhesive or the like so as to be inserted into the lower portion of the chamber cap and sealed; It is characterized by being equipped with a chamber cylinder lower cap that is assembled with adhesive or the like to fit and seal the lower part of the chamber cylinder.

And the drainage bag fixing means includes a coupling part in which a groove is formed so that the upper part is inserted into the chamber cylindrical lower cap, an extension part bent at the coupling part and formed to a certain length on the lower surface, and protruding at a predetermined position on the front of the extension part. It is characterized by being equipped with a 3-way holder part formed to seat a 3-way valve for discharge, and a drainage bag fixing part capable of fixing a drainage bag equipped with a drainage tube to the lower part of the extension part.

In addition, a laser holder assembly is provided at a predetermined position on one side of the scale, a laser holder is rotatably assembled by being inserted into the laser holder assembly, and is inserted into the laser holder from the top so that the horizontal assembly state of the laser holder can be checked. It is characterized in that it is further provided with a level indicator and a height display means including a laser point that is inserted and assembled into the laser holder.

Meanwhile, a 3-way holder assembly groove is formed at a predetermined position on the other side of the scale, and a 3-way valve holder is inserted and assembled into the 3-way holder assembly groove, and the 3-way valve holder is installed at a predetermined position on the other side of the scale. It is characterized in that it includes a hook that is inserted into the 3-way holder assembly groove formed in, a base that extends integrally with the hook, and a 3-way valve seating portion that protrudes from the front of the base and allows the 3-way valve to be inserted and seated. .

As described above, the extraventricular drainage device according to the present invention not only makes it easy to secure and measure a certain amount of cerebrospinal fluid drainage depending on the patient, but also makes it easy to control the discharge rate of cerebrospinal fluid.

As described above, according to the extraventricular drainage device according to the present invention, manufacturing of the chamber is facilitated by separately constructing and assembling the chamber upper guide member, chamber cylinder, and chamber cylinder lower cap constituting the chamber. There is an effect that the guide member can be easily manufactured by assembling the chamber cap to a member consisting of a chamber guide and an indicator.

Figure 1 is a perspective view illustrating the state in which the extraventricular drainage device according to an embodiment of the present invention is used while mounted on a transfusion stand;
Figure 2 is a perspective view showing the extraventricular drainage device of the present invention;
Figure 3 is an exploded perspective view of Figure 2;
Figure 4 is a perspective view showing the extraventricular discharge control means, which is the main part of Figure 2;
Figure 5 is a front view of Figure 4;
Figure 6 is a right side view of Figure 5;
Figure 7 is a bottom view of Figure 5;
Figure 8 is a rear view of Figure 5;
Figure 9 is a cross-sectional view taken along line A-A of Figure 5;
Figure 10 is a perspective view of the scale constituting the extraventricular discharge control means of the present invention;
Figure 11 is a rear perspective view of Figure 10.

Hereinafter, an extraventricular drainage device according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

In adding quotation marks to the components of the drawings, the same components are given the same symbols as much as possible even if they are shown in different drawings, a known function that is judged to unnecessarily obscure the gist of the present invention. and detailed description of the configuration is omitted. Additionally, directional terms such as 'top', 'bottom', 'front', 'back', 'front', 'front', 'back', etc. are used in connection with the orientation of the disclosed drawing(s). Since components of embodiments of the present invention can be positioned in various orientations, the term directional is used for illustrative purposes and is not limiting.

As shown in FIGS. 1 to 11, the extraventricular drainage device 1000 according to an embodiment of the present invention includes a clamp means 1100, a scale 1200, a chamber 1300, and a chamber guide fixing means 1400. ), drainage bag fixing means (1500), 3-way valve for discharge (1600), height display means (1700), and 3-way valve holder (1800).

Here, the clamp means 1100 includes a plurality of clamps 1110 that can be fixed in a certain position by inserting them into the pillar 1a of the infusion holding stand 1 used in the hospital, and is fastened to these clamps to form the pillar 1a ) It consists of a fastening member 1120 that can be fixed to.

Therefore, when the clamp 1110 is inserted into the predetermined position of the pillar 1a and fastened with the fastening member 1120, the fastening member 1120 tightens the clamp 1110 to the pillar 1a, thereby creating an extraventricular drainage device ( 1000) can be easily and reliably fixed to the desired location.

The clamp 1110 includes a T-shaped coupling groove 1111a formed to be inserted into and fixed to the back of the scale, a pillar fitting groove 1111b formed to fit into the pillar 1a, and a screw portion 1111c formed at the end. ) and a clamp body 1111 formed; A clamp piece 1112 is rotatably installed on the clamp body and is inserted into the pillar 1a, and a fastening member 1120 is inserted and fastened to the screw portion 1111c to pressurize and fix the pillar 1a. It consists of

Therefore, the clamp piece 1112 is spread out and inserted into the pillar 1a corresponding to a certain height of the infusion holding stand 1, and the fastening member 1120 is inserted from the clamp piece 1112 side to secure the screw portion of the clamp body 1111. When fastened to (1111c), the clamp 1110 is fixed at a predetermined position on the pillar 1a, and the scale 1200 to which the clamp 1110 is fixed is also easily fixed at a predetermined position, while the fastening member Of course, it is also possible that (1120) is inserted from the threaded portion (1111c) and fastened to the clamp piece (1112).

And the scale 1200 has a plurality of T-shaped coupling protrusions formed in a direction perpendicular to the pillar 1a on the rear surface to be inserted into the T-shaped coupling groove 1111a of the clamp 1110 constituting the clamp means 1100. (1210), a T-type chamber lifting and lowering guide groove 1220 formed at a certain length from the top to the bottom, and a scale ratchet 1230 in the form of unevenness is formed on the front surface of the T-type chamber lifting and lowering guide groove 1220. Meanwhile, next to the scale ratchet, there is a scale unit 1240 provided to indicate the height, a laser holder assembly unit 1250 provided at a predetermined position on one side of the scale 1200, and the other side of the scale 1200. There is a 3-way holder assembly groove 1260 formed at a predetermined position on the side.

Reference numeral 1211 is a slide core groove for molding the T-shaped coupling groove 1111a using an injection mold.

Therefore, the T-shaped coupling groove 1111a of the clamp 1110 constituting the clamp means 1100 is inserted into the T-shaped coupling protrusion 1210, and the clamp 1110 is assembled on the scale 1200. The scale 1200 is fixed at a predetermined position in (1), and the chamber upper guide member 1310 constituting the chamber 1300 is inserted into the T-type chamber lifting and lowering guide groove 1220 and moves up and down to raise and lower the chamber ( 1300) can be lifted up and down, while the fixing cap 1420 constituting the chamber guide fixing means 1400 is selectively seated on the scale ratchet 1230 to selectively fix the chamber 1300 at a predetermined position. Not only can this be done, but the chamber upper guide member 1310 indicates a scale to the scale 1240 to measure a more accurate height position and adjust the height. In addition, the laser holder assembly 1250 A height indicating means 1700 including a laser point 1730 can be installed, and a 3-way valve 1900 is assembled in the 3-way holder assembly groove 1260 via a 3-way valve holder 1800.

In addition, the chamber 1300 is provided to form the upper part of the chamber at a predetermined position of the chamber guide 1311, which is inserted into the chamber raising and lowering guide groove 1220 and assembled to move up and down. It protrudes to one side to indicate the height position, while also checking the inflow of cerebrospinal fluid.

Here, to describe the chamber 1300 in more detail, the chamber guide 1311 is inserted into the chamber raising and lowering guide groove 1220 and assembled to move up and down, and the upper part of the chamber is placed at a predetermined position of the chamber guide. In addition, the chamber cap 1312 is provided with a vent filter (not shown) installed to prevent an increase in internal pressure when drainage flows in, and a chamber cap 1312 protrudes from one side of the chamber guide and is positioned high. a chamber upper guide member 1310 equipped with an indicator 1313 configured to indicate; A chamber upper guide member including a chamber cap 1312 provided to form the upper part of the chamber at a predetermined position of the chamber guide, and an indicator 1313 protruding from one side of the chamber guide to indicate the height position. (1310) and; a chamber cylinder (1320) with a plurality of graduations marked on its transparent outer circumferential surface, which is assembled with an adhesive or the like to fit and seal the lower portion of the chamber cap; It is equipped with a chamber cylinder lower cap 1330 that is assembled with adhesive to fit and seal the lower part of the chamber cylinder and has a flat bottom.

Therefore, the chamber cylinder 1320 is assembled to the chamber cap 1312 of the chamber upper guide member 1310, and the chamber cylinder lower cap 1330 is assembled to the lower part of the chamber cylinder 1320, making it transparent when the cerebrospinal fluid is drained. It is easy to accurately check the amount of drainage fluid discharged through the scale displayed on the chamber cylinder 1320, and in addition to being guided up and down by the chamber guide 1311, the indicator part 1313 is the scale part of the scale 1200. Not only can the height be checked by indicating (1240), but the chamber cylinder lower cap (1330) is flat, making it easier for patients with a small amount of drainage to measure the amount of drainage, as well as reducing material costs when molding with an injection mold. This not only reduces the volume but also makes injection molding easier.

In addition, by constructing and assembling the chamber upper guide member 1310, chamber cylinder 1320, and chamber cylinder lower cap 1330, which constitute the chamber 1300, separately, manufacturing of the chamber 1300 is facilitated. The chamber upper guide member 1310 can be easily manufactured by assembling the chamber cap 1312 to a member consisting of the chamber guide 1311 and the indicating portion 1313.

Meanwhile, the chamber guide fixing means 1400 includes the fixing cap fixing screw 1410 and a chamber guide ( 1311), when the fixing cap fixing screw 1410 is fastened, the lower surface is inserted into and fixed to the scale ratchet 1230 of the scale 1200, and when the fixing cap fixing screw 1410 is loosened, the lower surface is A fixing cap 1420 that is separated from the scale ratchet 1230 to enable the chamber 1300 to be raised and lowered to the top and bottom of the scale 1200, and a fixing cap fixing screw 1410 that is accommodated inside the fixing cap. ) and includes an elastic member 1430 that is inserted into the chamber guide 1311 and is in close contact with the upper part of the chamber guide 1311.

Therefore, when the fixing cap fixing screw 1410 is loosened, the scale ratchet provided on the lower surface of the fixing cap 1420 is separated from the scale ratchet 1230 of the scale 1200 by the elastic force of the elastic member 1430, and the scale ( 1200) can be moved up and down, and the fixing cap 1420 is placed on the scale ratchet 1230 at a predetermined position of the scale 1200 and the fixing cap fixing screw 1410 is adjusted by the elastic force of the elastic member 1430. When fastened against , the chamber guide 1311 is fixed at a certain position and the chamber 1300 can be fixed at a predetermined height position.

In addition, the drainage bag fixing means 1500 includes a chamber cylindrical lower cap 1330 provided at the lower part of the chamber 1300, which is inserted into the upper part, and a 3-way valve for discharge 1600 and a mail luer lock 1610. It is configured to fix the drainage bag (2) to the lower part.

Here, if the drainage bag fixing means 1500 is described in more detail, it includes a coupling portion 1510 in which a groove 1511 is formed so that the upper portion is fitted into the chamber cylindrical lower cap 1330, and the coupling portion is bent at 90 degrees. an extension part 1520 formed to a certain length on the lower surface, a 3-way holder part 1530 that protrudes at a predetermined position on the front of the extension part to seat the 3-way valve 1600 for discharge, and a 3-way holder part 1530 of the extension part It has a structure equipped with a drainage bag fixing part 1540 that can fix a drainage bag 2 equipped with a drainage tube 2a and a vent filter (not shown) at the bottom.

Therefore, the outer peripheral surface of the chamber cylindrical lower cap 1330 is fitted into the groove 1511 of the coupling portion 1510 and is seated in the coupling portion 1510, while the discharge device is inserted into the lower center of the chamber cylindrical lower cap 1330. By connecting the drainage tube (2a) of the drainage bag (2) via the 3-way valve (1600) and the mailluor lock (1610), the cerebrospinal fluid flowing into the chamber (1300) flows through the 3-way valve (1600) for discharge. It moves to the drainage bag (2) by selectively manipulating the maillure lock (1610).

In addition, the discharge 3-way valve 1600 is assembled by inserting one end of it into the chamber cylindrical lower cap 1330 of the chamber 1300 from the bottom, and is seated and assembled on the drainage bag fixing means 1500. It is inserted into the lower part of the drainage tube (2a) connected to the drainage bag (2), and is formed to have an extra port at the other end.

Therefore, not only can the cerebrospinal fluid collected in the chamber 1300 be moved to the drainage bag 2 via the discharge 3-way valve 1600, but it can also be connected to a device for a separate test.

In addition, the height display means 1700 includes a laser holder 1710 that is rotatably assembled by being inserted into a laser holder assembly 1250 provided at a predetermined position on one side of the scale 1200, and the laser holder 1710 ) includes a level 1720 that is inserted from the top to check the horizontal assembly state of the laser holder, and a laser point 1730 that is inserted and assembled in the laser holder 1710.

Therefore, with the level 1720 and the laser point 1730 assembled in the laser holder 1710, the chamber 1300 and the chamber guide fixing means 1400 are manipulated to place the height display means 1700 at the height where the patient's ear is located. After fixing and leveling the laser holder 1710 while looking at the level 1720, it is easy to accurately set the height of the chamber 1300 by aligning the point of the laser point 1730 with the patient's ear. It is also easy to use when adjusting.

Meanwhile, the 3-way valve holder 1800 includes a hook 1810 fitted into the 3-way holder assembly groove 1260 formed at a predetermined position on the other side of the scale 1200, and a base extended integrally with the hook. It includes (1820) and a three-way valve seating portion (1830) that protrudes from the front of the base and allows the three-way valve (1900) to be inserted and seated.

Therefore, the hook 1810 of the 3-way valve holder 1800 is assembled into the 3-way holder assembly groove 1260 of the scale 1200, and then the 3-way valve 1900 is seated on the 3-way valve seating portion 1830. It can be assembled, and at this time, it is easy to use by connecting a test device or syringe using the remaining port on the 3-way valve (1900).

The embodiments of the present invention described above and shown in the drawings should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is limited only by the matters stated in the claims, and those skilled in the art can improve and change the technical idea of the present invention into various forms. Therefore, if such improvements and changes are obvious to a person of ordinary skill in the art, they will fall within the scope of protection of the present invention.

1000: Extraventricular drainage device 1100: Clamp means
1110: Clamp 1120: Fastening member
1200: Scale 1210: T-shaped coupling protrusion
1220: T-type chamber lifting and lowering guide groove 1230: Scale ratchet
1240: Graduation section 1250: Laser holder assembly section
1260: 3-way holder assembly groove 1300: Chamber
1310: Chamber upper guide member 1320: Chamber cylinder
1330: Chamber cylindrical lower cap 1400: Chamber guide fixing means
1410: fixing cap fixing screw 1420: fixing cap
1430: elastic member 1500: drainage bag fixing means
1510: coupling part 1520: extension part
1530: 3-way holder unit 1540: Drainage bag fixing unit
1600: 3-way valve for discharge 1610: Maillure lock
1700: Height display means 1710: Laser holder
1720: Level 1730: Laserpoint
1800: 3-way valve holder 1810: Hook
1820: Base 1830: 3-way valve seat
1900: 3 way valve

Claims (5)

In the extraventricular drainage device that is used by fixing the infusion stand (1) at a certain height and adjusting the height of the chamber,
A clamp means (1100) consisting of a plurality of clamps and fastening members that can be inserted into the pillar of the infusion stand and fixed in a certain position,
A plurality of T-shaped coupling protrusions (1210) formed in a direction perpendicular to the pillar (1a) on the rear surface to be inserted into the T-shaped coupling groove (1111a) of the clamp (1110) constituting the clamp means (1100), and A T-type chamber lifting and lowering guide groove 1220 is formed at a certain length at the bottom, and a scale ratchet 1230 in the form of an uneven shape is formed on the front surface of the T-type chamber lifting and lowering guide groove 1220, and on the side of this scale ratchet. There is a scale 1200 provided with a scale 1240 provided to display the height,
It is provided to form the upper part of the chamber at a predetermined position of the chamber guide 1311, which is inserted into the T-type chamber lifting and lowering guide groove 1220 and assembled to move up and down, and is positioned at a height by protruding from one side of the chamber guide. A chamber 1300 capable of indicating and checking the inflow of cerebrospinal fluid,
When assembled on the upper part of the chamber guide 1311 constituting the chamber 1300 and fastening the fixing cap fixing screw 1410, the fixing cap 1420 is inserted into the scale ratchet 1220 and fixed, and the fixing cap fixing screw A chamber guide fixing means (1400) that allows the chamber (1300) to be raised and lowered to the top and bottom of the scale (1200) by unscrewing (1410) to separate the fixing cap (1420) from the scale ratchet (1220);
An extraventricular drainage device, characterized in that it includes a drainage bag fixing means (1500) that is fitted in the upper part of the lower part of the chamber (1300) and is capable of fixing the drainage bag (2) to the lower part. According to clause 1,
The chamber 1300 is,
A chamber guide 1311 assembled to fit into the chamber raising and lowering guide groove 1220 and move up and down, and a chamber cap ( 1312), and a chamber upper guide member 1310 having an indicator 1313 that protrudes from one side of the chamber guide and indicates the height position;
a transparent chamber cylinder 1320 that is assembled to be fitted and sealed in the lower part of the chamber cap;
An extraventricular drainage device, characterized in that it is equipped with a chamber cylinder lower cap (1330) that is fitted to the lower part of the chamber cylinder and assembled to be sealed. According to clause 2,
The drainage bag fixing means (1500) is,
A coupling portion 1510 in which a groove 1511 is formed so that the upper portion is inserted into the chamber cylindrical lower cap 1330,
An extension portion 1520 bent at the coupling portion and formed at a certain length on the lower surface,
A 3-way holder portion (1530) protruding from a predetermined position on the front of the extension portion to seat the 3-way valve (1600) for discharge,
An extraventricular drainage device, characterized in that it is equipped with a drainage bag fixing part (1540) capable of fixing a drainage bag (2) equipped with a drainage tube (2a) at the lower part of the extension part. According to clause 1,
A laser holder assembly unit 1250 is provided at a predetermined position on one side of the scale 1200,
A laser holder (1710) that is inserted into the laser holder assembly part (1250) and rotatably assembled,
A level (1720) fitted at the top of the laser holder (1710) to check the horizontal assembly state of the laser holder,
An extraventricular drainage device, characterized in that it further includes a height indicating means (1700) including a laser point (1730) that is inserted into and assembled into the laser holder (1710). According to clause 1,
A 3-way holder assembly groove 1260 is formed at a predetermined position on the other side of the scale 1200,
In addition to the 3-way valve holder (1800) being inserted and assembled into the 3-way holder assembly groove (1260),
The 3-way valve holder (1800),
A hook 1810 fitted into the 3-way holder assembly groove 1260 formed at a predetermined position on the other side of the scale 1200,
A base (1820) extended integrally with the hook,
An extraventricular drainage device comprising a three-way valve seating portion (1830) that protrudes from the front of the base and allows the three-way valve (1900) to be inserted and seated.

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