CN219579541U

CN219579541U - Hemodialysis adds pipeline switch that perfusion was used

Info

Publication number: CN219579541U
Application number: CN202320892044.4U
Authority: CN
Inventors: 商亚莉; 孙荣江
Original assignee: Xinchang Hospital Of Traditional Chinese Medicine Hang Brand Of Medical Community General Hospital Of Xinchang Hospital Of Traditional Chinese Medicine
Current assignee: Xinchang Hospital Of Traditional Chinese Medicine Hang Brand Of Medical Community General Hospital Of Xinchang Hospital Of Traditional Chinese Medicine
Priority date: 2023-04-20
Filing date: 2023-04-20
Publication date: 2023-08-25
Anticipated expiration: 2033-04-20

Abstract

The utility model discloses a pipeline switcher for hemodialysis and perfusion, which comprises a body, wherein the body is a circular pipe, a first pipe interface for flowing arterial blood is arranged at the outer wall of the body, a second pipe interface for outputting arterial blood to a dialyzer is arranged at the outer wall of the body, a third pipe interface for flowing arterial blood to the perfuser is also arranged at the outer wall of the body, and the first pipe interface and the third pipe interface are positioned on the same circular section of the body; the device can be connected between the perfusion device and the dialyzer, blood can be selected to need or not need to pass through the perfusion device, the adjustment is carried out only by sliding the piston rod, the operation is simple and convenient, the switching process is not required to adjust the established pipeline, the operation of medical staff is convenient, when the perfusion device is not needed to be switched to blood, the perfusion device can be flushed and maintained through the device, and the device is particularly suitable for popularization and use for patients with poor blood state.

Description

Hemodialysis adds pipeline switch that perfusion was used

Technical Field

The utility model relates to a pipeline switcher for hemodialysis and perfusion.

Background

Hemodialysis (hemofiltration), also known as artificial kidney and kidney washing, is a blood purification technology, and utilizes the semi-permeable membrane principle to remove various harmful and redundant metabolic wastes and excessive electrolytes in a fluid from the body by dispersing, removing the substances from the body, so as to achieve the purpose of purifying the blood and correcting the balance of water electrolyte and acid and alkali.

The semipermeable membrane used in hemodialysis has a thickness of 10-20 microns and an average pore diameter of 3 nanometers, so that only small molecules with a molecular weight of less than 1.5 ten thousand and partial medium molecular substances can pass through, but macromolecular substances with a molecular weight of more than 3.5 ten thousand can not pass through. Therefore, proteins, pyrogens, viruses, bacteria, blood cells and the like are not permeable, most of urine components are water, a large amount of water is required to be discharged from blood in order to replace kidneys with artificial kidneys, and the artificial kidneys can only remove excessive water by osmotic pressure and ultrafiltration pressure. The artificial kidney, i.e., the hemodialysis apparatus, used has the above functions, and the quality and quantity of blood are adjusted so as to be close to the physiological state.

Dialysis treatment in the prior art is mature, but because the pipelines are arranged before dialysis, and later perfusion is needed (blood perfusion refers to the process that blood passes through an adsorbent device with a broad-spectrum detoxification effect or immobilized specific ligand by means of extracorporeal circulation so as to remove endogenous or exogenous pathogenic substances in the blood to achieve the purpose of blood purification. The dialysis equipment needs to be shut down, and then the perfusion vessel is added after the pipeline is modified.

In this way, although blood can be allowed to enter the dialyzer again through the perfusion device, in actual operation, we find that the above connection mode needs to stop the operation of the whole device and re-dock the modified pipeline when the perfusion device needs to be subjected to emergency flushing treatment, so that the dialysis can be continued. There is inconvenience in operation.

Therefore, we design a line switcher for connecting a perfusion device and a dialyzer, which can realize rapid switching without modifying hemodialysis of a line in the switching process and being used for perfusion.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a pipeline switcher for connecting a perfusion device and a dialyzer, which can realize rapid switching, and does not need to modify hemodialysis of a pipeline in the switching process and is used for perfusion.

In order to solve the problems, the utility model adopts the following technical scheme:

a line switcher for hemodialysis and perfusion comprises,

the body is a pipe, is provided with the first pipe interface that flows in arterial blood usefulness in the outer wall department of body to and be used for exporting arterial blood to the second pipe interface of dialyser. A third pipe interface for flowing arterial blood to the perfusion device is arranged at the outer wall of the body, the first pipe interface and the third pipe interface are positioned on the same circular section of the body,

the end cover is in threaded connection with the right end of the body, a fourth pipe interface for flowing in blood after being irrigated by the irrigator is arranged at the end face of the end cover, a waste discharge pipe for flowing out waste liquid after flushing the irrigator is arranged at the outer wall of the end cover, a pipe cover is detachably arranged at the waste discharge pipe,

the piston rod is coaxially arranged with the body, a piston head is arranged outside the piston rod in a clamping way, the piston head is contacted with the inner wall of the body to form a seal, an annular flow channel is arranged at the outer wall of the piston head, when the flow channel corresponds to the space between the first pipe joint and the third pipe joint, blood flowing in from the first pipe joint flows out from the third pipe joint after passing through the body, the right end of the piston rod is in threaded connection with a rod cap, a plug is fixed at the outer wall of the rod cap, a cavity is arranged inside the piston rod, the right end of the cavity is closed, an outflow hole is arranged at the outer wall of the piston rod and positioned at the right side of the piston head, an inflow hole is arranged at the left side of the piston head, an arc-shaped sealing block is arranged at the outer wall of the piston rod, the sealing block corresponds to the inflow hole, when the piston rod is pushed to the space between the first pipe joint and the second pipe joint, the inflow hole corresponds to the first pipe joint, the plug is positioned between the second pipe joint, and the outflow hole flows out from the first pipe joint to the output port after passing through the first arterial inflow hole and the second arterial inflow hole;

the check valve is arranged at the joint of the third pipe, a connecting pipe is matched with the check valve, the perfusion device is connected in a butt joint mode through the connecting pipe, a liquid inlet pipe is arranged at the outer wall of the connecting pipe, and a first pipe cover is arranged at the pipe orifice of the liquid inlet pipe.

Preferably, the left end of the body is provided with a compression ring, a folding pipe is fixed through the compression ring, the left end of the piston rod is in threaded connection with an end part, the outer wall of the piston rod is provided with a pressing plate, and the end of the folding pipe, which is far away from the compression ring, is clamped between the end part and the pressing plate.

Preferably, a rubber column is clamped at the left end of the piston rod, a stepped hole is formed in the end face of the end portion, penetrates through the end portion, and corresponds to the rubber column.

Preferably, a sealing ring is matched between the end cover and the body.

Preferably, the body is transparent.

The operation mode of the equipment is as follows:

firstly, according to a conventional connection mode, the dialyzer is connected with the artery and vein of a patient, when the connection is carried out, a piston rod in the device is pushed to the right side, arterial blood at the moment is sent into the dialyzer from a second pipe joint through a first pipe joint and then through the piston rod. This is a conventional dialysis operation.

When perfusion is added in the process of dialysis, the perfusion device is connected with the third pipe joint, and the piston rod is moved to the left side, so that the first pipe joint and the third pipe joint are conducted under the action of the flow channel, blood is limited to flow through the flow channel only under the sealing action of the piston head, the blood led out from the position of the third pipe joint flows into the perfusion device for perfusion, and the perfused blood is input from the position of the fourth pipe joint and is output to the dialyzer from the third pipe joint.

When the perfusion device needs to be cleaned or materials are added in an emergency mode, the piston rod is pushed to the right side, blood is directly conveyed to the second pipe interface through the first pipe interface, the perfusion device does not introduce blood at the moment, maintenance or medicine addition is carried out on the perfusion device, when the perfusion device needs to be cleaned and maintained, a pipe cover at a waste discharge pipe is required to be opened, the perfusion device is cleaned, normal operation of the dialyzer is not affected, waste which is cleaned is discharged through the waste discharge pipe, and after the flushing is finished, the piston rod is reset to the first pipe interface and the third pipe interface corresponding to the flow channel.

The beneficial effects of the utility model are as follows:

the device can be connected between the perfusion device and the dialyzer, blood can be selected to need or not need to pass through the perfusion device, the adjustment is carried out only by sliding the piston rod, the operation is simple and convenient, the switching process is not required to adjust the established pipeline, the operation of medical staff is convenient, when the perfusion device is not needed to be switched to blood, the perfusion device can be flushed and maintained through the device, and the device is particularly suitable for popularization and use for patients with poor blood state.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of the connection of a perfusion apparatus and a dialyzer of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a cross-sectional view of the present utility model in a state where blood flows into a perfusion apparatus;

FIG. 4 is a cross-sectional view of the present utility model in a state where blood does not flow into the perfusion apparatus;

FIG. 5 is a cross-sectional view of the piston rod at the inflow orifice;

fig. 6 is an enlarged view at a.

Description of the embodiments

All of the features disclosed in this specification, or all of the steps in a method or process disclosed, may be combined in any combination, except for mutually exclusive features and/or steps.

Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise. That is, each feature is one example only of a generic series of equivalent or similar features, unless expressly stated otherwise.

In the description of the present utility model, it should be understood that the terms "one end," "the other end," "the outer side," "the upper," "the inner side," "the horizontal," "coaxial," "the center," "the end," "the length," "the outer end," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, in the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "disposed," "coupled," "connected," "plugged," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Example 1

Referring to fig. 1, 2, 3, 4, 5 and 6, the device comprises a body 1, the body 1 is a circular tube, a first tube interface 11 for flowing arterial blood is arranged at the outer wall of the body 1, a second tube interface 12 for outputting arterial blood to a dialyzer is arranged at the outer wall of the body 1, a third tube interface 13 for flowing arterial blood to a perfusion device is also arranged at the outer wall of the body 1, the first tube interface 11 and the third tube interface 13 are positioned on the same circular section of the body 1, in the embodiment, the first tube interface 11 and the third tube interface 13 are positioned on the same circular section and the same diameter line,

an end cover 2, the end cover 2 is connected with the right end of the body 1 in a threaded manner, a fourth pipe interface 21 for flowing in blood after being irrigated by the irrigator is arranged at the end face of the end cover 2, a waste pipe 22 for flowing out waste liquid after flushing the irrigator is arranged at the outer wall of the end cover 2, a pipe cover 23 is detachably arranged at the waste pipe 22,

the piston rod 3 is coaxially arranged with the body 1, a piston head 31 is clamped outside the piston rod 3, a seal is formed after the piston head 31 contacts with the inner wall of the body 1, an annular flow channel 32 is arranged at the outer wall of the piston head 31, when the flow channel 32 corresponds to the space between the first pipe interface 11 and the third pipe interface 13, blood flowing in from the first pipe interface 11 flows out from the third pipe interface 13 after passing through the body 1, the right end of the piston rod 3 is in threaded connection with a rod cap 33, a plug 34 is fixed at the outer wall of the rod cap 33, a cavity 35 is arranged inside the piston rod 3, the right end of the cavity 35 is closed, an outflow hole 311 is arranged at the right side of the piston head 31, an outflow hole 312 is arranged at the outer wall of the piston rod 3, an inflow hole 313 is arranged at the left side of the piston head 31, an arc-shaped sealing block 313 is arranged at the outer wall of the piston rod 3, when the piston rod 3 is pushed to the right side until the piston head 31 is positioned between the first pipe interface 11 and the second pipe interface 12, the sealing block 313 simultaneously enters the space between the first pipe interface 11 and the second pipe interface 12, and the outflow hole 312 corresponds to the space between the first pipe interface 12 and the second pipe interface 12, and the outflow hole 311 is simultaneously connected to the outflow hole 312 through the first pipe interface 12 and the outlet hole 312;

the check valve 4, the check valve 4 install in third pipe interface 13 department has connecting pipe 41 through the check valve 4 cooperation, dock the perfusion apparatus through connecting pipe 41, and the outer wall department of connecting pipe 41 is provided with feed liquor pipe 42, and the mouth of pipe department of feed liquor pipe 42 installs first tube cover 43. The first tube cover 43 is made of rubber, when the perfusion device needs to be flushed, the first tube cover 43 is pulled out, and when the medicine needs to be replenished in the perfusion process, the medicine is pushed into the perfusion device after penetrating the first tube cover 43 by adopting the injector.

Example 2

Referring to fig. 3 and 6, a compression ring 121 is disposed at the left end of the body 1, a folded tube 131 is fixed through the compression ring 121, an end 331 is screwed at the left end of the piston rod 3, a pressing plate 332 is disposed at the outer wall of the piston rod 3, and the end of the folded tube 131 away from the compression ring 121 is sandwiched between the end 331 and the pressing plate 332.

In the above technical solution, the folding tube 131 is used to protect the part of the piston rod 3 exposed outside the body 1 from dust and bacteria.

Example 3

Referring to fig. 3 and 6, a rubber column 333 is clamped at the left end of the piston rod 3, a stepped hole 334 is provided at the end face of the end 331, and the stepped hole 334 penetrates the end 331 and corresponds to the rubber column 333.

When blood which does not pass through the dialyzer needs to be assayed, a syringe can be used, and the blood in the piston rod 3 is drawn after the needle of the syringe passes through the rubber column 333, so that rapid blood sampling is realized.

Example 4

Referring to fig. 3, a sealing ring 222 is fitted between the end cap 2 and the body 1.

The seal ring 222 may increase the tightness between the end cap 2 and the body 1.

The body is transparent.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

Spatially relative terms, such as "above," "upper" and "upper surface," "above" and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above" may include both orientations of "above" and "below. The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A hemodialysis adds a line switch for perfusion characterized by: comprising the steps of (a) a step of,

the body is a round tube, a first tube interface for flowing into arterial blood and a second tube interface for outputting arterial blood to a dialyzer are arranged at the outer wall of the body, a third tube interface for flowing out arterial blood to a perfusion device is also arranged at the outer wall of the body, the first tube interface and the third tube interface are positioned on the same circular section of the body,

2. The hemodialysis access line switch for perfusion according to claim 1, wherein: the left end of body is provided with the clamping ring, through the clamping ring is fixed with a folding pipe the left end threaded connection of piston rod has an tip, the outer wall department of piston rod is provided with the clamp plate, the folding pipe keep away from the end of clamping ring is pressed from both sides and locates the tip with between the clamp plate.

3. The hemodialysis access line switch for perfusion according to claim 2, wherein: the left end of the piston rod is clamped with a rubber column, a stepped hole is formed in the end face of the end portion, penetrates through the end portion, and corresponds to the rubber column.

4. The hemodialysis access line switch for perfusion according to claim 1, wherein: and a sealing ring is matched between the end cover and the body.

5. The hemodialysis access line switch for perfusion according to claim 1, wherein: the body is transparent.