CN220293914U - Blood perfusion device - Google Patents

Abstract

The utility model discloses a blood perfusion device, which comprises a barrel body, wherein a first blood port and a second blood port are arranged on the barrel body, a first end cap and a second end cap are respectively arranged on the two blood ports, plungers are fixedly arranged at the two blood ports, a partition piece is arranged in the barrel body and divides the interior of the barrel body into an upper cavity and a lower cavity, the upper cavity and the lower cavity are mutually communicated, a filter screen is arranged at the communication position of the upper cavity and the lower cavity, a first adsorption medium and a second adsorption medium are respectively filled in the upper cavity and the lower cavity, the apertures of the two adsorption mediums are different, the aperture of the first adsorption medium is larger than the aperture of the second adsorption medium, a cover body is fixedly sealed at the opening at the top of the barrel body, the first blood port is arranged on the cover body, a baffle piece is arranged in the upper cavity and is used for enabling the upper cavity to form a roundabout flow passage, the baffle piece comprises a plurality of sleeves with openings, the sleeves are sequentially nested from outside to inside, and the openings of the two adjacent sleeves are reversely arranged.

Description

Blood perfusion device

Technical Field

The utility model relates to a medical apparatus, in particular to a blood perfusion device.

Background

With the improvement of the blood purification technology level, blood perfusion has been widely used as a method for treating dialysis diseases. Blood perfusion treatment is a treatment method in which patient's blood is introduced into a perfusion apparatus containing a solid adsorbent by extracorporeal circulation to remove some exogenous or endogenous toxins and metabolites, and clean blood is returned to the body.

The blood perfusion device is composed of multiple components, including a middle tube, a gland, a small cap of a blood nozzle, a filter screen and the like, wherein a cavity for storing adsorption media is arranged in the middle tube, in order to prevent the adsorption media from flowing into blood in the perfusion process, the two ends of the middle tube are respectively provided with the filter screen, the corresponding aperture of the filter screen is smaller than the diameter of the adsorption media, the filter screen is pressed and sealed by a sealing ring, the end cap is compacted, and the gland is sealed by threads or an ultrasonic welding mode. The gland is of a hollow structure, blood nozzles communicated with the hollow cavity of the middle cylinder are exposed, and the blood nozzles are mutually sealed in a threaded mode through the blood nozzle small caps.

At present, only one cavity is arranged in the blood perfusion device and is used for storing one adsorption medium, so that compound adsorption cannot be realized, and the blood purification efficiency is poor.

Disclosure of Invention

The present utility model is directed to a blood perfusion device, which solves the above-mentioned problems.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a blood perfusion device, includes the barrel, sets up first blood mouth and second blood mouth on the barrel, sets up first end cap and second end cap on two blood mouths respectively, two equal fixed mounting in blood mouth department has the plunger, install the separator in the barrel, separate into upper chamber and lower chamber in the separator will the barrel, communicate each other between upper chamber and the lower chamber, upper chamber and lower chamber's intercommunication department is provided with the filter screen, upper chamber with it has first adsorption medium, second adsorption medium to fill respectively in the lower chamber, the aperture of two kinds of adsorption medium is different.

As a further scheme of the utility model: the first adsorption media pore size is greater than the second adsorption media pore size.

As a further scheme of the utility model: the top opening of the cylinder body is fixedly sealed with a cover body, and the first blood port is formed in the cover body.

As a further scheme of the utility model: and a baffle piece is arranged in the upper cavity and is used for enabling the upper cavity to form a circuitous flow channel.

As a further scheme of the utility model: the baffle piece comprises a plurality of sleeves with openings, the sleeves are sequentially nested from outside to inside, the openings of two adjacent sleeves are reversely arranged, a communicating pipe is fixedly arranged on the bottom of the sleeve of the innermost sleeve, and the communicating pipe is communicated with the lower cavity.

As a further scheme of the utility model: the end part of the communicating pipe is sealed, a plurality of communicating holes are formed in the peripheral side, close to the end part, of the communicating pipe, and the communicating holes are distributed evenly in the circumferential direction.

As a further scheme of the utility model: the second blood port is arranged at a position, close to the upper part, of the lower cavity.

Compared with the prior art, the utility model has the beneficial effects that:

the utility model discloses simple structure, convenient to use, through installing the separator in the barrel of perfusion device, separate into upper chamber and lower chamber in the separator will the barrel, communicate each other between upper chamber and the lower chamber, the intercommunication department of upper chamber and lower chamber is provided with the filter screen, upper chamber and lower intracavity are packed respectively and are had first adsorption medium, second adsorption medium, the aperture of two kinds of adsorption medium is different, when carrying out the blood perfusion, blood gets into the upper chamber earlier by first blood mouth to get into the lower chamber after carrying out the rough filtration by the great first adsorption medium in aperture, again by the small second adsorption medium fine filtration in aperture, thereby realize compound adsorption filtration, improve blood filtration efficiency.

Drawings

FIG. 1 is a schematic view of a blood perfusion apparatus;

FIG. 2 is an enlarged view of portion A of the blood perfusion apparatus;

FIG. 3 is an enlarged view of section B of the blood perfusion apparatus;

in the figure: barrel 1, upper chamber 11, lower chamber 12, lid 13, first blood port 13a, first end cap 13b, first plunger 13c, second blood port 13, second end cap 15, second plunger 16, partition 2, baffle 3, communication pipe 31, communication hole 31a, filter screen 31b.

Detailed Description

In order to describe the technical content, constructional features, achieved objects and effects of the technical solution in detail, the following description is made in connection with the specific embodiments in conjunction with the accompanying drawings.

Referring to fig. 1-3, the embodiment of the present utility model relates to a blood perfusion device, which comprises a barrel 1, wherein a first blood port 13a and a second blood port 13 are arranged on the barrel 1, a first end cap 13b and a second end cap 15 are respectively arranged on the two blood ports, the end caps and the blood ports are in threaded sealing connection, plungers are fixedly arranged at the two blood ports, namely, a first plunger 13c is fixedly arranged in the first blood port 13a, a second plunger 16 is fixedly arranged in the second blood port 13, the plungers are rubber sealing plugs, the syringes can be pierced and filled with medicines into the barrel 1, after the medicine filling is completed, the syringes are drawn out, and the rubber sealing plugs can be plugged again. And the tightness is ensured.

In this embodiment, the partition 2 is installed in the barrel 1, the partition 2 divides the barrel 1 into an upper cavity 11 and a lower cavity 12, the upper cavity 11 and the lower cavity 12 are mutually communicated, a filter screen 31b is disposed at the communication position of the upper cavity 11 and the lower cavity 12, the barrel 1 is divided into two chambers, each chamber is filled with adsorption media of different materials, for example, the upper cavity 11 is filled with a first adsorption medium, the lower cavity 12 is filled with a second adsorption medium, the apertures of the two adsorption media are different, preferably, the aperture of the first adsorption medium is larger than that of the second adsorption medium, namely, when blood perfusion is performed, blood enters the upper cavity 11 through a first blood port 13a, and enters the lower cavity 12 after being subjected to rough filtration through a first adsorption medium with larger aperture, and then is subjected to fine filtration through a second adsorption medium with smaller aperture, thereby realizing composite adsorption filtration and improving blood filtration efficiency. It is understood that the filter pore size of either the first or second adsorption media is smaller than the particle diameter of the impurities in the blood, thereby achieving filtration.

In this embodiment, specifically, the top opening of the cylinder 1 is sealed and fixed with a cover 13, and the first blood port 13a is opened on the cover 13. By providing the cover 13, the adsorption medium can be filled during production.

In this embodiment, preferably, in order to improve the rough filtering effect, a baffle member 3 is disposed in the upper cavity 11, and the baffle member 3 is used to form a circuitous flow path in the upper cavity 11, so as to prolong the time of the perfusion of the blood in the upper cavity 11, and ensure the sufficient contact between the blood and the first adsorption medium. Specifically, the baffle 3 includes a plurality of sleeves that have the opening, and a plurality of sleeves nest in proper order from outside to inside, and two adjacent telescopic openings are reverse to be arranged, and fixed communicating pipe 31 that sets up on the telescopic barrel head of inlayer, communicating pipe 31 with lower chamber 12 intercommunication is in order to realize the intercommunication setting of upper chamber 11 and lower chamber 12. The sleeves are nested in sequence to form a circuitous flow channel to improve the rough filtration time. In this embodiment, the filter screen 31b is fixedly installed inside the communication pipe 31 for separating two adsorption media.

In this embodiment, the end portion of the communicating tube 31 is sealed, and a plurality of communicating holes 31a are formed in the circumference side of the communicating tube 31 near the end portion, and the plurality of communicating holes 31a are uniformly distributed in the circumferential direction. The blood in the upper chamber 11 enters the lower chamber 12 from the periphery and is fully contacted with the second adsorption medium, so that the secondary filtering effect is improved.

In addition, the second blood port 13 is disposed at a position near the upper side of the lower cavity 12, so as to generate an overflow effect. The blood in the upper cavity 11 enters the lower cavity 12 through the communicating pipe 31, the liquid level of the blood in the lower cavity 12 is gradually increased and is fully contacted and filtered with the second filter medium, and the filtered blood flows out from the second blood port 13 through the overflow function, so that the full contact of the blood is ensured, and the filtering effect is further improved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the statement "comprising … …" or "comprising … …" does not exclude the presence of additional elements in a process, method, article or terminal device comprising the element. Further, herein, "greater than," "less than," "exceeding," and the like are understood to not include the present number; "above", "below", "within" and the like are understood to include this number.

While the embodiments have been described above, other variations and modifications will occur to those skilled in the art once the basic inventive concepts are known, and it is therefore intended that the foregoing description and drawings illustrate only embodiments of the utility model and not limit the scope of the utility model, and it is therefore intended that the utility model not be limited to the specific embodiments described, but that the utility model may be practiced with their equivalent structures or with their equivalent processes or with their use directly or indirectly in other related fields.

Claims (6)

1. The utility model provides a blood perfusion device, includes the barrel, sets up first blood mouth and second blood mouth on the barrel, sets up first end cap and second end cap on two blood mouths respectively, two equal fixed mounting in blood mouth department has plunger, its characterized in that: the cylinder is internally provided with a partition piece, the inside of the cylinder is partitioned into an upper cavity and a lower cavity by the partition piece, the upper cavity and the lower cavity are communicated with each other, a filter screen is arranged at the communication part of the upper cavity and the lower cavity, the upper cavity and the lower cavity are respectively filled with a first adsorption medium and a second adsorption medium, and the apertures of the two adsorption mediums are different; and a baffle piece is arranged in the upper cavity and is used for enabling the upper cavity to form a circuitous flow channel.

2. The blood perfusion apparatus of claim 1, wherein: the first adsorption media pore size is greater than the second adsorption media pore size.

3. The blood perfusion apparatus of claim 1, wherein: the top opening of the cylinder body is fixedly sealed with a cover body, and the first blood port is formed in the cover body.

4. The blood perfusion apparatus of claim 1, wherein: the baffle piece comprises a plurality of sleeves with openings, the sleeves are sequentially nested from outside to inside, the openings of two adjacent sleeves are reversely arranged, a communicating pipe is fixedly arranged on the bottom of the sleeve of the innermost sleeve, and the communicating pipe is communicated with the lower cavity.

5. The hemodynamic perfusion apparatus of claim 4, wherein: the end part of the communicating pipe is sealed, a plurality of communicating holes are formed in the peripheral side, close to the end part, of the communicating pipe, and the communicating holes are distributed evenly in the circumferential direction.

6. The blood perfusion apparatus of claim 1, wherein: the second blood port is arranged at a position, close to the upper part, of the lower cavity.