CN210294263U - Blood cell analyzer and isolation chamber device thereof - Google Patents

Abstract

The utility model provides a blood cell analyzer and an isolation room device thereof, wherein the isolation room device comprises an isolation room provided with a waste liquid discharge port, a mixing gas inlet and a reaction tank connecting port; the filtering structure is arranged in the isolation chamber and used for filtering waste liquid discharged by the reaction tank; the barrier portion that can stop the liquid circulation, the projection of mixing gas entry along mixing gas's input direction is all located the barrier portion, and the interval has the gas passage that supplies mixing gas to pass through between barrier portion and the mixing gas entry. When the mixing gas inlet produces the resorption, the barrier part can prevent the liquid in the isolation chamber from passing through, prevents liquid from inhaling the gas pipeline by the mixing gas inlet, can effectively keep apart gas and liquid in the blood cell analysis fluid system, has guaranteed the gas-liquid isolation effect of isolation chamber, can prevent that liquid medium resorption from entering into the gas circuit system, has guaranteed mixing gas pressure's stability, has effectively isolated the external disturbance signal of telecommunication simultaneously, has improved the accuracy of blood cell analysis.

Description

Blood cell analyzer and isolation chamber device thereof

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, relate to a blood cell analyzer and isolator device thereof.

Background

The blood cell analyzer is the most common in-vitro diagnostic equipment and is commonly used in hospitals of all levels. Various pumps and valves in a liquid path system of the blood cell analyzer are important constituent elements, belong to precise components and are sensitive to foreign impurities and other large-particle substances. Wherein, to autoinjection model type, can bring into the test-tube cap piece to the liquid way system when the rubber test-tube cap of heparin tube is punctured to the sampling needle, the test-tube cap piece that gets into the liquid way system can cause the jamming or even inefficacy to pump and valve, reduces the reliability of pump and valve, leads to the life reduction of pump and valve.

In order to avoid the above problems, the prior art often adopts a filter screen placed in the isolation chamber, and a specific size of mesh is used for filtering out impurity particles in the liquid path system, so as to protect other high-value liquid path devices.

However, because the meshes of the filter screen are smaller, a liquid net film is easy to form in the meshes under the action of liquid tension, so that the liquid net film is sucked into a gas pipeline by the back suction of the uniform mixing gas inlet, and the gas-liquid isolation effect of the isolation chamber is influenced.

After the liquid is sucked back into the uniform mixing gas inlet pipeline, the liquid in the counting reaction tank usually contains sodium chloride, and the liquid is crystallized and separated out after being sucked back into the uniform mixing gas pipeline, so that the uniform mixing gas pipeline is blocked; when the uniform mixing gas is required to be injected into the counting reaction tank to mix the liquid in the counting reaction tank, the pressure and the speed of the uniform mixing gas are changed due to the blockage of the uniform mixing gas pipeline by crystallized sodium chloride, so that the influence of the uniform mixing effect on the counting stability cannot be ensured. On the other hand, because the waste liquid with strong conductivity enters the mixing gas pipeline, the electric signals of external strong electromagnetic interference signals, electromagnetic valves and the like can enter the counting reaction tank through the conduction of the liquid-containing gas pipeline, thereby influencing the stability of the counting voltage of the counting reaction tank, causing interference to the counting signals and influencing the accuracy of measurement.

SUMMERY OF THE UTILITY MODEL

In view of this, an object of the present invention is to provide a blood cell analyzer and an isolation chamber device thereof, so as to ensure the gas-liquid isolation effect of the isolation chamber.

In order to achieve the above object, the utility model provides a following technical scheme:

an isolation chamber device of a blood cell analyzer comprises an isolation chamber provided with a waste liquid discharge port, a uniform mixing gas inlet and a reaction tank connecting port; the filtering structure is arranged in the isolation chamber and used for filtering waste liquid discharged by the reaction tank; further comprising:

the barrier part that can prevent the liquid circulation, the gaseous entry of mixing is located along the projection of the gaseous input direction of mixing on the barrier part, the barrier part with the gas passage that supplies mixing gas to pass through is separated between the gaseous entry of mixing.

Preferably, in the above-described isolation chamber device, the filter structure includes:

a screen support;

and the filter screen is arranged on the filter screen bracket.

Preferably, in the above-mentioned isolator device, the filter screen support include with the corresponding first support muscle that sets up of mixing gas entry, first support muscle forms the stop part.

Preferably, in the isolation chamber device, the filter screen is a tapered mesh tube, and the tapered mesh tube is tapered from one end close to the reaction tank connection port to the other end.

Preferably, in the isolation chamber device, the screen holder is a tapered frame that can be attached to an outer wall of the tapered mesh tube.

Preferably, in the above-described isolation chamber device, the tapered frame includes:

the positioning flat plate is attached to the inner wall of the isolation chamber and is positioned at one end far away from the reaction tank connecting port;

the fixing ring is fixedly connected with the isolation chamber and is positioned at one end close to the reaction tank connecting port;

the first supporting rib and the second supporting rib are connected with the positioning flat plate and the fixing ring and are distributed along the circumferential direction to form 180-degree included angles.

Preferably, in the above-mentioned isolation chamber device, the fixing ring is fixedly connected to the isolation chamber through a first positioning structure.

Preferably, in the above-described isolation chamber device, the isolation chamber includes:

the uniform mixing gas inlet and the waste liquid outlet are both positioned on the isolation chamber main body;

and the upper cover is used for sealing the isolation chamber main body, the upper cover and the isolation chamber main body are matched to form an isolation chamber inner cavity, the reaction tank connecting port is positioned on the upper cover, and the upper cover and the isolation chamber main body are matched and bonded with adhesive for sealing connection through a second positioning structure.

Preferably, in the isolation chamber device, the waste liquid discharge port is located at the bottom of the isolation chamber, the uniform mixing gas inlet and the reaction tank connecting port are located at the top of the isolation chamber, and the uniform mixing gas inlet and the waste liquid discharge port are located at the same circumferential position of the isolation chamber.

According to the above technical solution, the isolation chamber device of the blood cell analyzer provided by the present invention comprises: an isolation chamber provided with a waste liquid outlet, a mixing gas inlet and a reaction tank connecting port; the filtering structure is arranged in the isolation chamber and used for filtering waste liquid discharged by the reaction tank; the barrier portion that can stop the liquid circulation, the projection of mixing gas entry along mixing gas's input direction is all located the barrier portion, and the interval has the gas passage that supplies mixing gas to pass through between barrier portion and the mixing gas entry.

In the application process, when the uniform mixing gas is required to be introduced into the reaction tank, the uniform mixing gas passes through a gas channel between the blocking part and the uniform mixing gas inlet and enters the reaction tank through the reaction tank connecting port.

Because the projection of mixing gas entry along mixing gas's input direction is whole to be located the barrier, so the barrier sets up in the position corresponding with mixing gas entry, so, when mixing gas entry produced the resorption, the barrier can prevent the liquid in the isolation chamber like liquid film and micro-droplet and pass through, thereby prevent liquid by mixing gas entry suction gas pipeline, can effectively keep apart gas medium and the liquid medium among the blood cell analysis fluid system, the gas-liquid isolation effect of isolation chamber has been guaranteed, can prevent effectively that liquid medium resorption from entering into the gas circuit system, the stability of mixing gas pressure has been guaranteed, external interference signal of telecommunication has effectively been isolated simultaneously, the accuracy of hematology analysis has been improved.

The utility model also provides a blood cell analyzer, including reaction tank, mixing gas pipeline, the waste liquid pipeline and the isolation room device of being connected respectively with the three, the isolation room device is any kind of isolation room device of the aforesaid, because above-mentioned isolation room device has above-mentioned effect, the blood cell analyzer that has above-mentioned isolation room device has same effect, so this paper is no longer repeated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is an overall schematic view of an isolation chamber device of a blood cell analyzer according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an isolation chamber assembly of a blood cell analyzer according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of the separation chamber device of the blood cell analyzer according to the embodiment of the present invention after accumulating foreign particles;

FIG. 4 is an exploded view of the isolation chamber device of the blood cell analyzer according to the embodiment of the present invention;

fig. 5 is a schematic structural diagram of a filtering structure provided by an embodiment of the present invention;

fig. 6 is a schematic structural view of a screen bracket according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a blood cell analyzer according to an embodiment of the present invention.

Detailed Description

The embodiment of the utility model provides a blood cell analyzer and isolator device thereof has guaranteed the gas-liquid isolation effect of isolator.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 6, an isolation chamber device 01 of a blood cell analyzer according to an embodiment of the present invention includes: an isolation chamber provided with a waste liquid outlet 1a, a uniform mixing gas inlet 1b and a reaction tank connecting port 2 a; the filtering structure is arranged in the isolation chamber and is used for filtering the waste liquid discharged by the reaction tank 02; the barrier portion that can prevent the liquid circulation, mixing gas entry 1b are all located the barrier portion along the projection m of mixing gas's input direction, and the gas passage that supplies mixing gas to pass through is separated between barrier portion and mixing gas entry 1 b.

In the application process, when the uniform mixing gas is required to be introduced into the reaction tank 02, the uniform mixing gas passes through a gas channel between the blocking part and the uniform mixing gas inlet 1b and enters the reaction tank 02 through the reaction tank connecting port 2a, the gas channel is formed by the uniform mixing gas at intervals between the blocking part and the uniform mixing gas inlet 1b, and certainly, the gas channel can also be formed in a slotting or perforating mode.

Because the projection m of the blending gas inlet 1b along the input direction of the blending gas is completely positioned on the blocking part, the blocking part is arranged at the position corresponding to the blending gas inlet 1b, therefore, when the blending gas inlet 1b generates suck-back, the blocking part can prevent the liquid in the isolation chamber from passing through like a liquid film and micro-droplets, thereby preventing the liquid from being sucked into the blending gas pipeline 04 by the blending gas inlet 1b, the gas medium and the liquid medium in the blood cell analysis fluid system can be effectively isolated, the gas-liquid isolation effect of the isolation chamber is ensured, the liquid medium can be effectively prevented from being sucked back into the gas circuit system, the stability of the pressure of the blending gas is ensured, meanwhile, the external interference electric signal is effectively isolated, and the accuracy of blood cell analysis is improved.

In particular, the filter structure comprises a screen support 4 and a screen 5 arranged on the screen support 4. The filter screen 5 is woven by a material with strong corrosion resistance and strong acid-base property, a PP or PTFE material can be generally used, the mesh size of the filter screen 5 is determined according to the model of a corresponding pump and a corresponding valve element in a liquid path system, and the mesh range can be generally selected from 80-120 meshes. The filter screen 5 can be fixed on the filter screen bracket 4 by means of glue or the like.

In the embodiment, the filter screen 5 is used for filtering the waste liquid discharged from the reaction tank 02, so that the liquid has better liquid through-flow capacity; of course, the filter structure may also adopt other structures.

Among the further technical scheme, filter screen support 4 includes the first support muscle 41 that corresponds the setting with mixing gas inlet 1b, and first support muscle 41 forms the stop part. In the embodiment, the first supporting rib 41 on the filter screen bracket 4 is used for blocking the liquid from being sucked back into the mixing gas inlet 1b, an independent blocking part is not required to be arranged, and the structure is simplified. Of course, this application can also set up solitary barrier plate, is located between filter screen 5 and the gaseous entry 1b of mixing to realize same effect, the utility model discloses no longer give unnecessary details here one by one.

As shown in fig. 2 to 5, the screen 5 is a tapered mesh tube which tapers from one end near the reaction tank connection port 2a to the other end. The conical mesh cylinder is of a conical structure, so that the effective area of the filter screen 5 in the isolation chamber with the same size is larger than that of the filter screen 5 in a plane mode, more importantly, after a certain amount of impurity particles g are accumulated in the filter screen 5 of the isolation chamber (as shown in fig. 3), an effective distance is kept between the waste liquid discharge port 1a and the impurity particles g, when the waste liquid discharge action is executed, the liquid through-flow capacity of the isolation chamber is good, and liquid in the reaction tank 02 can be effectively emptied. Alternatively, the conical net cylinder can be replaced by other structures, such as two connected cylindrical net cylinders with different diameters.

In the above embodiment, the filter screen support 4 is a conical frame which can be attached to the outer wall of the conical screen cylinder, and the conical frame can not only better support the conical screen cylinder, but also save the occupied space, and improve the compactness of the filter structure. The screen holder 4 may be a cylindrical frame or the like as long as it can support a tapered screen cylinder.

As shown in fig. 5-6, the conical frame comprises a positioning plate 43 attached to the inner wall of the isolation chamber, the positioning plate 43 is located at one end far away from the reaction tank connection port 2 a; a fixing ring 42 fixedly connected with the isolation chamber, wherein the fixing ring 42 is positioned at one end close to the reaction tank connecting port 2 a; the first supporting rib 41 and the second supporting rib are connected with the positioning flat plate 43 and the fixing ring 42 and are distributed along the circumferential direction at an included angle of 180 degrees. The structure is simple and easy to manufacture. Of course, the tapered frames may also be all frame structures, and the positioning flat plate 43 is replaced by a positioning frame.

Conical frame passes through location flat board 43 and the laminating of isolator inner wall, and when assembling filter screen support 4 in the isolator, this location flat board 43 can tentatively fix a position and fix filter screen support 4, prevents that filter screen support 4 from taking place the slope in the isolator, the assembly of being convenient for.

Preferably, in the isolation chamber device 01, the fixing ring 42 is fixedly connected to the isolation chamber through the first positioning structure. This first location structure can also realize the fixed of first support muscle 41 and mixing gas inlet 1b relative position, and first location structure can be recess and bellied cooperation, can also adopt the cooperation of joint structure certainly.

Specifically, the filter screen bracket 4 is formed by injection molding of a hydrophobic material, and the shape of the main body of the filter screen bracket is conical;

for the convenience of assembly, the isolation chamber comprises an isolation chamber body 1, and a uniform mixing gas inlet 1b and a waste liquid outlet 1a are both positioned on the isolation chamber body 1; seal upper cover 2 of isolation room main part 1, upper cover 2 forms the isolation room inner chamber with isolation room main part 1 cooperation, and reaction tank connector 2a is located upper cover 2, and upper cover 2 and isolation room main part 1 pass through 6 sealing connection of second location structure cooperation adhesive.

Specifically, the isolation chamber body 1 is injection molded from a corrosion resistant material. The upper cover 2 is injection molded from a corrosion resistant material. The adhesive 6 needs to be a glue with strong acid and alkali resistance after curing.

First location structure is including setting up two location bosss 42a that are 180 jiaos of distribution in solid fixed ring 42 upper end (be close to the one end of reaction tank connector 2a promptly) and setting up two spacing breach that are 180 jiaos of distribution at upper cover 2, through the circumference location cooperation of spacing breach and location boss 42a one-to-one, realizes that filter screen support 4 is fixed with the relative position of isolation room. Of course, the sieve holder 4 and the separating chamber can also be formed integrally.

The second positioning structure comprises an annular rubber groove arranged on the isolation chamber main body 1 and an annular bulge 2b arranged on the upper cover 2. During assembly, firstly, filling glue of the bonding glue 6 into the annular glue groove, and then, installing the annular bulge 2b of the upper cover 2 into the annular glue groove of the isolation chamber main body 1; after the adhesive 6 is cured, the isolation chamber body 1 and the upper cover 2 can be bonded into a whole, so that a good sealing effect is achieved.

Of course, the second positioning structure may also adopt other structures, such as a clamping structure or a clamping structure. The upper cover 2 and the isolation chamber main body 1 can also be hermetically connected in a mode of matching a flange with a sealing ring, and can also be integrally formed.

Preferably, in the isolation chamber device 01, the waste liquid discharge port 1a is located at the bottom of the isolation chamber, the mixing gas inlet 1b and the reaction tank connection port 2a are located at the top of the isolation chamber, and the mixing gas inlet 1b and the waste liquid discharge port 1a are located at the same circumferential position of the isolation chamber; it should be noted that the top and bottom of the isolation chamber are the top and bottom of the isolation chamber device 01 in the operating state.

After the assembly of the isolation chamber is completed, the relative positions of the uniform mixing gas inlet 1b and the waste liquid outlet 1a on the filter screen bracket 4 and the isolation chamber main body 1 are shown in fig. 2, fig. 3 and fig. 6, and the projection m of the uniform mixing gas inlet 1b along the uniform mixing gas input direction and the projection n of the waste liquid outlet 1a along the waste liquid flowing direction are both positioned on the first support rib 41 of the filter screen bracket 4.

The specific implementation operation is as follows: when the filter screen bracket 4 with the assembled filter screen 5 is placed into the isolation chamber main body 1, the filter screen bracket 4 is preliminarily fixed by the positioning flat plate 43 at the bottom of the filter screen bracket 4, so that the filter screen bracket 4 is prevented from inclining; then the upper cover 2 is covered, and the positioning boss 42a at the upper part of the filter screen bracket 4 is limited in the gap on the upper cover 2; before the glue in the annular glue groove of the isolation chamber main body 1 is not cured, the upper cover 2 can be rotated to enable the first support ribs 41 on the filter screen bracket 4 to be opposite to the uniform mixing gas inlet 1b and the waste liquid outlet 1 a.

The waste liquid discharge port 1a is positioned at the bottom of the isolation chamber, can be arranged at the bottom of the side surface, can also be arranged on the bottom surface, can be replaced, and the waste liquid discharge port 1a can also be positioned at the top of the isolation chamber, and utilizes the liquid suction pipe to extend into the bottom end in the isolation chamber to realize liquid discharge.

Mixing gas entry 1b and reaction tank connector 2a all are located the isolation room top, can all set up on upper cover 2, also can all set up the side at isolation room main part 1 top.

The uniform mixing gas inlet 1b and the waste liquid outlet 1a are located at the same circumferential position of the isolation chamber, so that other structures can be assembled conveniently, and of course, the uniform mixing gas inlet and the waste liquid outlet can also be located at different circumferential positions.

The isolation chamber is also provided with a binding belt 3 for fixing. The cable tie 3 is used to secure the isolator assembly 01 to a sheet metal mounting plate or machining member (not shown).

The embodiment of the utility model provides a blood cell analyzer is still provided, including reaction tank 02, mixing gas pipeline 04, row's waste liquid pipeline 05 and the isolation room device 01 who is connected respectively with the three, isolation room device 01 is the isolation room device that any one above-mentioned embodiment provided, has guaranteed the gas-liquid isolation effect of isolation room, and its advantage is brought by isolation room device 01, and relevant part in the above-mentioned embodiment is referred to specific please, just no longer gives details here.

As shown in fig. 7, a blending gas inlet 1b of the isolation chamber is connected with a blending gas pipeline 04 and is connected with a gas source 03 through a solenoid valve a; the reaction tank connecting port 2a of the isolation chamber is connected with the reaction tank 02; the waste liquid discharge port 1a of the isolation chamber is connected to a waste liquid discharge line 05 and connected to a pressure source 06 through an electromagnetic valve B.

When the waste liquid discharging action is executed, the waste liquid discharging port 1a of the isolation chamber main body 1 is communicated with the pressure source 06 capable of providing negative pressure, the liquid in the reaction tank 02 is filtered by the filter screen 5 and then is discharged, and at the moment, the uniform mixing gas inlet 1b is communicated with the isolation chamber main body 1, so that the pipeline connected with the uniform mixing gas inlet 1b is in a negative pressure state. After the waste liquid discharging action is finished, the electromagnetic valve B on the waste liquid discharging pipeline 05 is disconnected, negative pressure in the isolation chamber cannot disappear instantly, a pipeline connected with the uniform mixing gas inlet 1B is in a negative pressure state for a period of time, the isolation chamber main body 1 can be sucked back, just because the blocking part (specifically the first supporting rib 41 of the filter screen support 4) is just opposite to the uniform mixing gas inlet 1B, when the back suction occurs, the blocking part can effectively block water drops attached to meshes of the filter screen 5 and impurity particles, and then liquid is prevented from being sucked back to enter the uniform mixing gas inlet 1B pipeline, and liquid flow and air flow in a fluid system are effectively isolated.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. An isolation chamber device of a blood cell analyzer comprises an isolation chamber provided with a waste liquid discharge port (1a), a uniform mixing gas inlet (1b) and a reaction tank connecting port (2 a); the filtering structure is arranged in the isolation chamber and is used for filtering waste liquid discharged by the reaction tank (02); it is characterized by also comprising:

the barrier part that can prevent the liquid circulation, blending gas entry (1b) is all located along projection (m) of blending gas's input direction on the barrier part, the barrier part with the interval has the gas passage that supplies blending gas to pass through between blending gas entry (1 b).

2. The isolator room device of claim 1, wherein the filter structure comprises:

a strainer holder (4);

and the filter screen (5) is arranged on the filter screen bracket (4).

3. The isolation chamber device of claim 2, wherein the screen holder (4) comprises a first support rib (41) disposed corresponding to the blending gas inlet (1b), the first support rib (41) forming the blocking portion.

4. The isolator device according to claim 3, characterized in that the screen (5) is a conical mesh cylinder tapering from one end near the reaction tank connection port (2a) to the other.

5. An isolator device according to claim 4, characterised in that the screen holder (4) is a conical frame adapted to fit against the outer wall of the conical screen cylinder.

6. An isolator room device according to claim 5, wherein the conical frame comprises:

the positioning flat plate (43) is attached to the inner wall of the isolation chamber, and the positioning flat plate (43) is positioned at one end far away from the reaction tank connecting port (2 a);

the fixing ring (42) is fixedly connected with the isolation chamber, and the fixing ring (42) is positioned at one end close to the reaction tank connecting port (2 a);

the first supporting rib (41) and the second supporting rib are connected with the positioning flat plate (43) and the fixing ring (42) and are distributed along the circumferential direction at an included angle of 180 degrees.

7. The isolator chamber assembly of claim 6, wherein the retainer ring (42) is fixedly connected to the isolator chamber by a first locating structure.

8. The isolator room device of claim 6, wherein the isolator room comprises:

the separation chamber main body (1), the uniform mixing gas inlet (1b) and the waste liquid outlet (1a) are both positioned on the separation chamber main body (1);

seal upper cover (2) of isolation room main part (1), upper cover (2) with isolation room main part (1) cooperation forms the isolation room inner chamber, reaction tank connector (2a) are located upper cover (2), upper cover (2) with isolation room main part (1) is through second location structure cooperation bonding glue (6) sealing connection.

9. The isolation chamber device of any one of claims 1 to 8, wherein the waste liquid discharge port (1a) is located at the bottom of the isolation chamber, the uniform mixing gas inlet (1b) and the reaction tank connection port (2a) are located at the top of the isolation chamber, and the uniform mixing gas inlet (1b) and the waste liquid discharge port (1a) are located at the same circumferential position of the isolation chamber.

10. A blood cell analyzer comprising a reaction cell (02), a blending gas pipeline (04), a waste liquid discharge pipeline (05) and an isolation chamber device (01) connected with the reaction cell, the blending gas pipeline, the waste liquid discharge pipeline and the waste liquid discharge pipeline respectively, wherein the isolation chamber device (01) is the isolation chamber device according to any one of claims 1 to 9.

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