JP6675469B1 - Drain funnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drainage funnel capable of smoothly draining a large amount of liquid and facilitating daily cleaning work. A drainage funnel (1) comprising an inner funnel (2) for receiving drainage, an outer funnel (3), and a holder (4) for holding the inner funnel inside the outer funnel, wherein the inner funnel is a drainage funnel. Inner pipe portion for discharging the inner pipe portion, an inner body portion having a diameter larger than the inner pipe portion, and an inner diameter expansion connecting the inner pipe portion and the inner body portion while expanding the diameter from the inner pipe portion toward the inner body portion. And an outer funnel having an outer pipe portion, an outer body portion having a diameter larger than that of the outer pipe portion, and an outer pipe portion and an outer body portion while increasing in diameter from the outer pipe portion toward the outer body portion. A drainage funnel characterized in that a gap is formed between an inner body portion and an outer body portion, the drainage funnel being formed of an outer diameter-enlarged portion that connects the inner body portion and the outer body portion. [Selection diagram] Fig. 1

Description

  The present invention relates to a drainage funnel connected to a tube or the like of a drainage line of a hemodialysis apparatus.

  Before starting a blood purification treatment, a step called "priming" is performed by medical staff. Priming is an operation of assembling a blood purifier (dialyzer) and a blood circuit for a patient to be treated and filling the priming liquid. The main purpose of this priming step is to wash the foreign substances inside the blood purifier and the blood circuit with the priming liquid, and then further fill the priming liquid to remove air. There is also an effect that it is possible to confirm that there is no abnormality in the circuit before starting treatment.

  For example, as described in Patent Document 1, a hemodialysis apparatus may be equipped with a “priming funnel” for draining a priming solution used for washing in a priming step. The priming funnel branches off from the main drain line of the facility through a check valve to prevent backflow from the main drain line, and ends at the end of a separate drain line tube that extends to each dialyzer. Connected. In addition, a silicon tube having an inner diameter of about 10 to 20 mm is often used for an individual drainage line, and the priming funnel main body is fixed to a side pole of a dialysis machine at a height with good operability.

  Conventionally, about 1000 mL of saline solution contained in a bag was used as the priming solution. In recent years, a large amount of filtered dialysate has been used to improve washing efficiency, reduce costs, and reduce the burden on medical staff. The method used for is spreading.

  Since the priming funnel is connected to the drainage tube, the amount of drainage increases, so the air inside the tube is not exhausted smoothly, and the liquid blocks the tube like a stopper, and the liquid flows from the funnel. There was a risk of overflow. Therefore, it is necessary to ensure drainage of the air by ensuring an air discharge path.

  In addition, the use of dialysate in place of physiological saline has raised concerns about the propagation of various bacteria on the components of the drainage line and the deposition of calcium carbonate, etc., resulting from the components of the dialysate. Frequent routine maintenance such as cleaning is required.

  Regarding general funnels, various proposals have been made for ensuring drainage smoothly by securing an air discharge path. For example, Patent Literature 2 discloses a funnel in which air is prevented from being sealed by a conduit for venting air, and the flow of liquid is smooth. Patent Document 3 discloses an inner / outer double funnel in consideration of air discharge.

JP 2014050509 A JP-A-06-080121 Japanese Utility Model Publication No. 55-041389

  When the funnel disclosed in Patent Literature 2 is connected to the drainage tube in the priming step, the liquid that runs down the inner wall of the tube easily blocks the lower end of the air release conduit, and does not perform the air release function. , The drainage of the funnel may be impaired. Further, with the funnel disclosed in Patent Literature 3, it is considered that it is difficult to perform a cleaning work of the funnel itself, which is required daily in blood purification treatment.

  Therefore, an object of the present invention is to provide a drainage funnel that can smoothly discharge a large amount of liquid and can easily perform a daily cleaning operation.

The drainage funnel according to the present invention is a drainage funnel including an inner funnel that receives drainage, an outer funnel, and a holder that holds the inner funnel inside the outer funnel,
The inner funnel has an inner pipe part for discharging the drainage liquid, an inner body part having a larger diameter than the inner pipe part, and the inner pipe part expanding from the inner pipe part toward the inner body part. Part and an inner enlarged diameter part connecting the inner body part,
The outer funnel has an outer tube portion, an outer body portion having a diameter larger than the outer tube portion, and the outer tube portion and the outer body portion increasing in diameter from the outer tube portion toward the outer body portion. And an outside enlarged diameter part that connects
A gap is formed between the inner trunk and the outer trunk.

  According to such a drainage funnel, an air discharge path can be secured with a simple structure including the inner and outer funnels and the holder, and the drainage can be performed smoothly.

  In the drainage funnel, it is preferable that the holder is configured to cover a cross section of the gap. That is, by making the holder function as an upper lid that covers the gap between the inner trunk and the outer trunk, it is possible to prevent contaminants from being mixed through the gap.

  In the drainage funnel, it is preferable that a vent hole is provided in the outer body. By providing such a vent, not only the air discharge path is ensured, but also the main drain line and individual drain lines are blocked due to some trouble, and the liquid level rises to the inside of the drain funnel. In such a case, since the liquid overflows from the vent hole, the outer peripheral surface of the drainage introduction pipe (mainly the open end of the blood circuit for priming) held inside the inner funnel should be in contact with the drainage. Can be prevented.

  In the drainage funnel, preferably, the inner funnel is held by engagement of the outer funnel with the holder. Preferably, the inner funnel is detachably held inside the outer funnel. By releasing the engagement, the inner funnel, which requires daily maintenance, can be easily removed and washed without separating the funnel and the drainage pipe, and the workability when assembling the funnel again can be improved. improves.

  In the drainage funnel, it is preferable that a plurality of protrusions are provided between the inner tube and the outer tube. By providing such projections, the drainage discharged from the inner pipe portion can be dropped to a desired position. For example, in order to cause the drainage to drop near the center of the tube constituting the drainage discharge pipe, a plurality of projections are provided on the outer wall surface of the inner funnel or the inner wall surface of the outer funnel, and the inner pipe part and the outer pipe part are concentric. The protrusions can be arranged as follows.

  In the drainage funnel, it is preferable that the holding tool holds a drainage introduction pipe for introducing the drainage inside the inner funnel. By holding the drainage introduction pipe in this way, the drainage can be dropped to a desired position on the inner funnel.

  In the drainage funnel, it is preferable that a flange (collar) is provided on an inner peripheral side of a tip of the inner pipe portion. The drainage liquid drops while accelerating when it does not touch the inner wall of the drainage discharge pipe, but falls slowly at a constant speed once it reaches the state where it touches the inner wall of the drainage discharge pipe and falls. Therefore, by providing a circumferential flange on the inner end of the tube portion of the inner funnel, it is possible to prevent the drain water flow from spreading at the drain port of the inner funnel and to drop without touching the inner wall of the drain discharge tube. Since the section becomes long, the drainage at the time of drainage becomes good. Further, since part of the drainage adheres to the flange due to the action of surface tension and functions as a stopper for liquid-sealing the inside of the inner tube portion, even if the drainage is intermittently introduced into the inner funnel, A trap effect that leaves drainage in the part can be easily obtained. By utilizing this trapping effect, it is possible to effectively prevent the occurrence of turbulence in the inner pipe even when the drainage is introduced into the inner funnel at the next timing, and to discharge the drainage smoothly. Can be.

  In the drainage funnel, it is preferable that a partition plate for partitioning a cross section of the inner pipe portion is provided. As in the case where the flange is provided, the drainage can be adhered to the partition plate by the action of surface tension, so that the drainage remains in the inner pipe even when the inner diameter of the inner pipe is relatively large. The trap effect can be maintained. Conventionally, a dust catcher is provided at the bottom of the funnel because foreign matter falls into the tube when the foreign matter falls into the drainage funnel. However, by providing a partition plate, the dust catcher can also serve as a dust catcher.

  The drainage funnel is preferably used for a priming step of a hemodialysis device, for example, the drainage is a priming drainage discharged in a priming step of a hemodialysis device, and the inner pipe portion It is preferable that the drainage discharged from the dialysis unit joins a main drainage line of the hemodialysis apparatus.

  ADVANTAGE OF THE INVENTION According to the drainage funnel which concerns on this invention, a discharge path of air is ensured by a simple structure, and a drainage can be performed smoothly.

It is an outline longitudinal section of a drainage funnel concerning one embodiment of the present invention. FIG. 2 is a cross-sectional view of a tube portion of the drainage funnel of FIG. 1, (A) shows an example in which a protrusion is provided on an outer wall of a tube portion of an inner funnel, and (B) shows an example in which a protrusion is provided on an inner wall of a tube portion of an outer funnel. Show. 2A and 2B show an appearance of the drainage funnel of FIG. 1, wherein FIG. 1A is a front view, FIG. 1B is a right side view, and FIG. FIG. 2 is an exploded view showing a disassembled state of the drainage funnel of FIG. 1, wherein (A) is a holder, (B) is an inner funnel, and (C) is an outer funnel. It is a schematic diagram which shows the state which fixed the drainage funnel of FIG. 1 to the dialysis device, (A) is a front view, (B) is a left view. It is the partial expansion schematic longitudinal section which expanded the pipe part vicinity of the drainage funnel which concerns on other embodiment of this invention. FIG. 7 is a cross-sectional view of a tube part of the drainage funnel of FIG. 6, (A) shows an example in which a flange is provided on an inner wall of the tube part of the inner funnel, and (B) further provides a partition plate on an inner wall of a tip part of the tube part of the inner funnel. Here is an example. FIG. 7 is a schematic longitudinal sectional view of the drainage funnel of FIG. 6, (A) showing a section viewed from a direction parallel to the partition plate, and (B) showing a section viewed from a direction perpendicular to the partition plate. It is a schematic longitudinal section of the conventional drainage funnel.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic longitudinal sectional view of a drainage funnel according to one embodiment of the present invention. The drainage funnel 1 includes an inner funnel 2, an outer funnel 3, and a holder 4. The inner funnel 2 is configured to be detachably attached to the outer funnel 3 with a single touch by an engaging portion 5 between the outer funnel 3 and the holder 4. ing.

  The inner funnel 2 and the outer funnel 3 connect the pipe part 6 and the body part 7 while expanding the diameter from the pipe part 6 to the body part 7, the large-diameter body part 7, and the body part 7. Each has an enlarged diameter portion 8, and the tip of the tube portion 6 is inserted into a drainage discharge tube 9. A vent 10 is provided on the wall of the body 7 of the outer funnel 3.

  Drainage is introduced into the inside of the inner funnel 2 from a drainage introduction pipe 11 held by the holder 4, and usually falls on the inner surface of the enlarged diameter portion 8 of the inner funnel 2 and then flows along the enlarged diameter portion 8. And flow down toward the pipe portion 6. Then, the drainage flows into the drainage discharge pipe 9 from the pipe 6 of the inner funnel 2. At this time, since the space between the pipe 6 and the drainage discharge pipe 9 is sealed, the drainage is discharged by the inflow of the drainage. The air in the pipe 9 is expelled by the gap between the inner funnel 2 and the outer funnel 3, and is discharged from the ventilation hole 10 via the pipe part 6 and the enlarged diameter part 8. By discharging air from the drainage pipe 9 in this manner, the drainage can be smoothly dropped from the drainage pipe 9.

  2A and 2B are cross-sectional views of a tube portion of the drainage funnel of FIG. 1, wherein FIG. 2A shows an example in which a protrusion 12 is provided on a tube outer wall 2 a of an inner funnel 2, and FIG. The example provided on the inner wall 3a of the tube part is shown. Since both the projections 12 and 13 are arranged on the concentric circle of the pipe portion 6, the drainage liquid easily falls near the center of the drainage discharge pipe 9. The flow path cross-sectional area of the gap between the inner funnel 2 and the outer funnel 3 in the pipe part 6 is designed to be substantially equal to the flow path cross-sectional area of the inner funnel 2 in the pipe part 6.

  3A and 3B show the appearance of the drainage funnel of FIG. 1, wherein FIG. 3A is a front view, FIG. 3B is a right side view, and FIG. 3C is a plan view. FIG. 4 is an exploded view showing a disassembled state of the drainage funnel of FIG. 1, wherein (A) is an outer funnel, (B) is an inner funnel, and (C) is a holder. At the time of drainage funnel cleaning, the engagement part 5 is disassembled into components as shown in FIG.

  5A and 5B are schematic diagrams showing a state in which the drainage funnel of FIG. 1 is fixed to a dialysis device, wherein FIG. 5A is a front view and FIG. 5B is a left side view. The drainage funnel 1 is attached to a side pole 22 of the dialysis device 21, and the drainage discharged from the drainage funnel 1 is mainly discharged through a drainage discharge pipe 9 constituting a branch drainage line 23 of the dialysis device 21. It joins the liquid line 24. A check valve 25 is provided between the main drainage line 24 and the branch drainage line 23 to prevent the drainage flowing through the main drainage line from flowing back through the branch drainage line 23.

  FIG. 6 is a partially enlarged schematic longitudinal sectional view in which the vicinity of a pipe portion of a drainage funnel according to another embodiment of the present invention is enlarged. An annular flange 6 a is provided along the inner periphery of the tip of the tube portion 6 of the inner funnel 2, and a part of the drainage introduced from the drainage introduction pipe 11 forms a liquid stopper here. Thus, even if the intermittent drainage stops and the amount of drainage accumulated in the inner funnel 2 becomes small, it is possible to prevent the drainage from splashing from the pipe portion 6. Further, even when a large amount of drainage is accumulated in the inner funnel 2, the discharge amount of the drainage is appropriately controlled at the portion where the diameter is narrowed by the flange 6 a. The drainage can be dropped vertically to form a shaped flow.

  FIGS. 7A and 7B are cross-sectional views of the tube part of the drainage funnel of FIG. 6, wherein FIG. 7A shows an example in which a flange 6a is provided on the inner wall of the tube part of the inner funnel 2, and FIG. The example provided on the inner wall of the tube part is shown. By the trapping effect due to the surface tension promoted by the provision of the flange 6a and the effect of the partition plate 6b suppressing the vortex generated at the time of drainage, the water drained from the tip of the inner funnel is prevented from spreading and scattering. be able to.

  8A and 8B are schematic vertical sectional views of the drainage funnel of FIG. 6, wherein FIG. 8A is a cross section viewed from a direction parallel to the partition plate, and FIG. 8B is a cross section viewed from a direction perpendicular to the partition plate. By providing a gap 26 between the partition plate 6b and the flange 6a provided at the end of the inner wall of the inner funnel 2, the water diverted by the partition plate is re-merged, and a rectifying action can be realized by the trap effect. It is. Due to such rectification, when the air in the tube connected to the lower part of the funnel is discharged through the double funnel, the water discharged from the tip of the inner funnel is scattered and is wound up by the air. It is possible to prevent crystallization by attaching to the outer wall of the funnel or the inner wall of the outer funnel.

  FIG. 9 is a schematic longitudinal sectional view of a conventional drainage funnel. In the conventional drainage funnel, by attaching a wire spiral dust catcher 27 to the inner wall of the enlarged diameter portion 8, it is possible to prevent foreign matters falling into the drainage funnel 31 from entering the tube and closing the tube. Although it was necessary to prevent it, the provision of the partition plate 6b as shown in FIG. 8 makes it possible to omit the mounting of the dust catcher 27.

  INDUSTRIAL APPLICABILITY The drainage funnel according to the present invention can be widely used for receiving various types of drainage such as priming drainage of a hemodialysis apparatus and flowing the same into a drainage line.

1, 31 Drainage funnel 2 Inner funnel 2a Inner funnel outer wall 3 Outer funnel 3a Inner funnel inner wall 4 Retainer 5 Engagement part 6 Tube part 6a Flange 6b Partition plate 7 Body 8 Large diameter part 9 Drain Liquid discharge pipe 10 Vent hole 11 Drainage introduction pipes 12 and 13 Projection 21 Dialyzer 22 Side pole 23 Branch drainage line 24 Main drainage line 25 Check valve 26 Gap 27 Dust catcher

Claims (10)

An inner funnel for receiving drainage, an outer funnel, and a drainage funnel including a holding tool that holds the inner funnel inside the outer funnel,
The inner funnel has an inner pipe part for discharging the drainage liquid, an inner body part having a diameter larger than the inner pipe part, and the inner pipe part expanding from the inner pipe part toward the inner body part. Part and an inner enlarged diameter part connecting the inner body part,
The outer funnel has an outer tube portion, an outer body portion having a diameter larger than the outer tube portion, and the outer tube portion and the outer body portion increasing in diameter from the outer tube portion toward the outer body portion. And an outside enlarged diameter part that connects
A gap is formed between the inner trunk and the outer trunk ,
Drainage funnel the retainer, characterized that you hold the drainage inlet pipe for introducing the effluent to the inside of the inner funnel. An inner funnel for receiving drainage, an outer funnel, and a drainage funnel including a holding tool that holds the inner funnel inside the outer funnel,
The inner funnel has an inner pipe part for discharging the drainage liquid, an inner body part having a diameter larger than the inner pipe part, and the inner pipe part expanding from the inner pipe part toward the inner body part. Part and an inner enlarged diameter part connecting the inner body part,
The outer funnel has an outer tube portion, an outer body portion having a diameter larger than the outer tube portion, and the outer tube portion and the outer body portion increasing in diameter from the outer tube portion toward the outer body portion. And an outside enlarged diameter part that connects
A gap is formed between the inner trunk and the outer trunk ,
Drainage funnel characterized that you have a partition plate is provided for partitioning a cross-section of the inner tube portion. The drainage funnel according to claim 2 , wherein a flange is provided on an inner peripheral side of a tip of the inner tube portion, and a gap is provided between the partition plate and the flange. The drainage funnel according to any one of claims 1 to 3 , wherein the holder covers a cross section of the gap. The drainage funnel according to any one of claims 1 to 4 , wherein a ventilation hole is provided in the outer body. The drainage funnel according to any one of claims 1 to 5 , wherein the inner funnel is held by engagement between the outer funnel and the holder. The drainage funnel according to any one of claims 1 to 6 , wherein the inner funnel is detachably held inside the outer funnel. The drainage funnel according to any one of claims 1 to 7 , wherein a plurality of protrusions are provided between the inner pipe portion and the outer pipe portion. The drainage funnel according to any one of claims 1 to 8 , wherein a flange is provided on an inner peripheral side of a tip of the inner tube portion. The effluent is a priming effluent discharged in a priming step of a hemodialysis device, and the effluent discharged from the inner pipe portion joins a main drainage line of the hemodialysis device. 10. The drainage funnel according to any one of 9 above.

Images