CN220040474U - Reagent filling mechanism and analyzer for chemiluminescence immunoassay - Google Patents

Abstract

The utility model discloses a reagent filling mechanism for chemiluminescence immunoassay, which comprises a needle arm seat, a reagent needle, a limiting cylinder, a connecting plate, a fixing seat, an induction piece and a sensor, wherein a sampling end of the reagent needle penetrates through the connecting plate and enters the limiting cylinder, the reagent needle can move in the limiting cylinder, the limiting cylinder is fixedly connected with the needle arm seat, the reagent needle is fixedly connected with the connecting plate, the fixing seat is fixedly connected with the needle arm seat, a connecting protruding part is arranged on the fixing seat, a sleeve rod is arranged between the connecting protruding part and the needle arm seat, the sleeve rod penetrates through the connecting plate and is in sliding fit with the connecting plate, a spring is sleeved outside the sleeve rod, the induction piece is fixedly connected with the connecting plate, the sensor is connected to one side of the fixing seat, and the induction piece is matched with the sensor. The spring is arranged on one side of the reagent needle, and is not concentric with the reagent needle, so that the damage to the reagent needle caused by screwing in the nut during installation is avoided.

Description

Reagent filling mechanism and analyzer for chemiluminescence immunoassay

Technical Field

The utility model belongs to the technical field of reagent filling equipment for detection, and particularly relates to a reagent filling mechanism for chemiluminescence immunoassay.

Background

An analyzer is often used in chemiluminescent immunoassay, and the analyzer is provided with a reagent filling mechanism for transferring and filling a sample, a diluent and the like. Because the reagent needle of filling mechanism makes the touching in the removal in the use, in order to prevent that the reagent needle from being bumped, current filling mechanism can be installed in the upper end of reagent needle, makes spring and reagent needle concentric, runs into the obstacle when reagent needle moves down, the reagent needle spring, triggers the sensor of upper end, and the system stops the downward movement. However, in such a use situation, the lower end of the spring is generally required to be screwed into the nut to prevent the spring from falling off, and the reagent needle is required to be damaged with larger moment under the action of the spring force.

In view of this, this patent is presented.

Disclosure of Invention

In order to solve the above problems, an object of the present application is to provide a reagent filling mechanism for chemiluminescent immunoassay, which can avoid damage to a reagent needle.

The utility model is realized by the following technical scheme:

the utility model provides a reagent filling mechanism for chemiluminescence immunoassay, which comprises a needle arm seat, a reagent needle, a limiting cylinder, a connecting plate, a fixed seat, a sensing piece and a sensor, wherein a sampling end of the reagent needle penetrates through the connecting plate and enters the limiting cylinder, the reagent needle can move in the limiting cylinder, the limiting cylinder is fixedly connected with the needle arm seat, the reagent needle is fixedly connected with the connecting plate, the fixed seat is fixedly connected with the needle arm seat, a connecting protruding part is arranged on the fixed seat, a sleeve rod is arranged between the connecting protruding part and the needle arm seat, the sleeve rod penetrates through the connecting plate and is in sliding fit with the connecting plate, a spring is sleeved outside the sleeve rod, the sensing piece is fixedly connected with the connecting plate, the sensor is connected to one side of the fixed seat, and the sensing piece is matched with the sensor.

In an alternative embodiment, a retaining ring is fixedly sleeved outside the reagent needle, and the retaining ring is fixedly connected with the connecting plate.

In an alternative embodiment, the retainer ring is integrally formed with the connecting plate, and the reagent needle is fixedly welded with the retainer ring.

In an alternative embodiment, the connecting protruding portion extends towards the direction of the connecting plate, one end of the spring is fixedly connected to the connecting protruding portion, and the other end of the spring abuts against the connecting plate and is in movable fit with the connecting plate.

In an alternative embodiment, the middle part of the sensor is provided with a U-shaped groove, the sensing piece is perpendicular to the connecting plate, and one end of the sensing piece far away from the connecting plate can be inserted into the middle groove of the sensor.

In an alternative embodiment, the sensor is screwed to the holder.

In an alternative embodiment, a limit protruding portion is arranged above the fixing seat, an open slot is formed in the limit protruding portion, the needle handle of the reagent needle penetrates through the open slot, and the slot depth of the open slot is larger than the distance that the needle handle of the reagent needle moves forward or backward in the open slot.

In an alternative embodiment, a clamping seat is fixedly arranged on the needle arm seat, and the clamping seat is positioned on one side of the sensor.

In an alternative embodiment, a circuit board is further arranged on the needle arm seat, and a protective cover is further fixedly arranged outside the circuit board;

the needle arm seat is also fixedly provided with a connector, the middle part of the connector is provided with a shaft hole, and the shaft hole is connected with the spline shaft in a matched mode.

A second object of the present utility model is to provide an analyzer comprising a reagent filling mechanism for chemiluminescent immunoassay as defined in any one of the above.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

according to the reagent filling mechanism for the chemiluminescent immunoassay, provided by the embodiment of the utility model, the connection mode between the spring and the reagent needle is changed, the spring is arranged on one side of the reagent needle, the spring is not concentric with the reagent needle, and the damage to the reagent needle caused by screwing in the nut during installation is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

In the drawings:

FIG. 1 is a schematic diagram of a reagent filling mechanism for chemiluminescent immunoassay according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of a reagent filling mechanism for chemiluminescent immunoassay according to an embodiment of the present utility model at another viewing angle;

fig. 3 is a schematic structural diagram of a reagent filling mechanism for chemiluminescent immunoassay according to another view angle according to an embodiment of the present utility model.

In the drawings, the reference numerals and corresponding part names:

the device comprises a 1-needle arm seat, a 2-reagent needle, a 3-limiting cylinder, a 4-connecting plate, a 5-fixing seat, a 6-sensing piece, a 7-sensor, an 8-connecting boss, a 9-loop bar, a 10-spring, an 11-retainer ring, a 12-limiting boss, a 13-open slot, a 14-clamping seat, a 15-circuit board, a 16-protecting cover, a 17-connecting piece, an 18-connecting head and a 19-shaft hole.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

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 definition or explanation thereof is necessary in the following figures. Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

In the description of the embodiments of the present utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc. indicate orientations or positional relationships based on those shown in the drawings, or those conventionally put in use of the product of the application, or those conventionally understood by those skilled in the art, are merely for convenience of description and simplicity of description, and do not indicate or imply that the apparatus or elements 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.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1:

as shown in fig. 1 to 3, the present embodiment provides a reagent filling mechanism for chemiluminescent immunoassay, comprising:

comprises a needle arm seat 1 which is used as a bearing part of a filling mechanism;

a reagent needle 2 for transferring and filling a sample or a reagent by sucking the sample or the reagent through the reagent needle 2, wherein one part of the reagent needle 2 is a needle handle, the other part is a needle head, and a connecting part between the needle handle and the needle head is crank-shaped;

the limiting cylinder 3 is fixedly connected with the needle arm seat 1, and can be fixed in a screw connection mode, the middle part of the limiting cylinder 3 can accommodate the reagent needle 2, and the reagent needle 2 can move in the limiting cylinder 3 to avoid swinging of the reagent needle 2 in the moving process;

a connecting plate 4, through which the sampling needle end of the reagent needle 2 passes through the limiting cylinder 3; the reagent needle 2 is fixedly connected with the connecting plate 4, and the connecting plate 4 moves along with the movement of the reagent needle 2;

the fixing seat 5 is fixedly arranged on the needle arm seat 1, if the needle arm seat 1 can be fixedly connected in a welding mode, the fixing seat 5 is provided with a connecting protruding part 8, the connecting protruding part 8 can be integrally formed with the fixing seat 5, a loop bar 9 is arranged between the connecting protruding part 8 and the needle arm seat 1, two ends of the loop bar 9 are respectively fixedly connected with the needle arm seat 1 and the connecting protruding part 8 in a welding mode, the connecting plate 4 is also positioned between the connecting protruding part 8 and the needle arm seat 1, the loop bar 9 passes through the connecting plate 4 and is in sliding fit with the connecting plate 4, the connecting plate 4 can move along the loop bar 9, a spring 10 is sleeved outside the loop bar 9, one end of the spring 10 is fixedly welded with the connecting protruding part 8, and the other end of the spring 10 can be in movable fit with the connecting plate 4 and is propped against the connecting plate 4; the connecting convex part 8 extends towards the direction of the connecting plate 4, and the connecting convex part 8 is parallel to the needle arm seat 1;

the induction pieces 6 are fixedly connected to the connecting plate 4 and are separated from the springs 10 at two ends of the connecting plate 4; preferably, the sensing piece 6 is perpendicular to the connecting plate 4 to form an L-shaped angle plate structure, and the sensing piece 6 and the connecting plate 4 are integrally formed;

the sensor 7 is fixedly connected to one side of the fixing seat 5, the induction piece 6 is matched with the sensor 7, the sensor 7 can adopt a U-shaped sensor 7, a U-shaped groove is formed in the middle position of the sensor 7, and the induction piece 6 can be inserted into the U-shaped groove. Normally, when the spring 10 is not compressed by the connection plate 4, the sensing piece 6 is located outside the U-shaped groove of the sensor 7, and the end of the sensing piece 6 is not inserted into the sensor 7. The sensor 7 is preferably a photoelectric sensor 7, and may be a product currently available in the market, which will not be described in detail herein.

In the use process, when sample, reagent liquid are transferred and filled, the needle arm seat 1 is driven to move downwards by the lifting base of the analyzer, when the needle arm seat moves to a certain position, the reagent needle 2 is blocked by encountering obstacles, the reagent needle 2 can be driven to move upwards by the connecting plate 4 and compress the spring 10, so that the sensing piece 6 moves upwards to enter the U-shaped groove of the sensor 7, the sensor 7 senses and is triggered to generate a sensing signal, and the sensor 7 can be directly connected or indirectly connected with the control system of the analyzer, such as through electric connection or wireless connection, and transmits the sensing signal to the control system of the analyzer, thereby stopping the movement of the needle arm.

In this embodiment, the connection mode between the spring 10 and the reagent needle 2 is changed, the spring 10 is arranged on one side of the reagent needle 2, the spring 10 is not concentric with the reagent needle 2, and the damage to the reagent needle 2 caused by screwing in the nut during installation is avoided.

Further, a retainer ring 11 is fixedly sleeved outside the reagent needle 2, the retainer ring 11 has a certain thickness, and the retainer ring 11 is fixedly connected to the connecting plate 4; preferably, the retainer ring 11 is integrally formed with the connecting plate 4, and the reagent needle 2 is fixedly welded with the retainer ring 11. Because the retainer ring 11 has a certain thickness, the retainer ring 11 is arranged to further limit the reagent needle 2, so that the gravity center of the structure formed by the reagent needle 2, the connecting plate 4 and the retainer ring 11 is stable, the swinging effect of the reagent needle 2 in the moving process is reduced, and the unstable gravity center is avoided.

Example 2:

on the basis of embodiment 1, sensor 7 passes through screw connection with fixing base 5, and such setting makes things convenient for sensor 7's dismantlement, avoids current with sensor 7 welding at needle arm seat 1 or welding on other bearing objects (such as circuit board 15), inconvenient maintenance or dismantlement when appearing damaging, even damages the condition of needle arm seat 1 or circuit board 15.

Further, a limiting protruding portion 12 is further arranged above the fixing seat 5, the limiting protruding portion 12 is preferably integrally formed with the fixing seat 5, an open slot 13 is formed in the top of the limiting protruding portion 12, a needle handle of the reagent needle 2 penetrates through the open slot 13, the distance between the needle handle and slot walls on two sides of the open slot 13 is smaller, and the slot depth of the open slot 13 is larger than the distance that the needle handle of the reagent needle 2 moves forward or backward in the open slot 13.

Through the spacing of open slot 13, the needle handle of reagent needle 2 can not break away from open slot 13 all the time, and through the further spacing of open slot 13 to reagent needle 2 needle handle, guarantee that reagent needle 2 removes in-process needle handle can not the rocking side to side, have better guard action to reagent needle 2.

Further, a clamping seat 14 is fixedly arranged on the needle arm seat 1, the clamping seat 14 is positioned at one side of the sensor 7, and the clamping seat 14 is used for fixing a connecting wire of the sensor 7.

Furthermore, the needle arm seat 1 is further provided with a circuit board 15 electrically connected with the sensor 7, for supplying power to the sensor 7, and the circuit board 15 is in a known manner, and the connection between the circuit board 15 and the sensor 7 is not described herein. Due to the existence of the pipeline joint on the reagent needle 2, once loose, the condition that the circuit board 15 is damaged by leakage liquid can occur, and the protective cover 16 is fixedly arranged outside the circuit board 15 based on the condition, so that the occurrence of the condition is avoided. The two sides of the protecting cover 16 can be provided with integrally formed connecting pieces 17, the best connecting piece 17 is in a plate structure, and the connecting pieces 17 are fixedly connected with the needle arm seat 1 through screws.

The needle arm seat 1 is also fixedly provided with a connector 18, the middle part of the connector 18 is provided with a through shaft hole 19, the shaft hole 19 is connected with a spline shaft in a matched mode, and the spline shaft is connected in the middle and belongs to a part of the lifting base of the analyzer.

Example 3:

an analyzer, including the reagent filling mechanism for chemiluminescent immunoassay according to embodiment 1 or embodiment 2, wherein the filling mechanism is connected to a lifting base through a spline shaft, the lifting base can enable the spline shaft to move up and down, and the specific lifting base can adopt an existing lifting mechanism, which is not described herein.

The foregoing detailed description of the utility model has been presented for purposes of illustration and description, and it should be understood that the utility model is not limited to the particular embodiments disclosed, but is intended to cover all modifications, equivalents, alternatives, and improvements within the spirit and principles of the utility model.

Claims (10)

1. The reagent filling mechanism for chemiluminescent immunoassay is characterized by comprising a needle arm seat, a reagent needle, a limiting cylinder, a connecting plate, a fixed seat, a sensing piece and a sensor, wherein a sampling end of the reagent needle penetrates through the connecting plate and enters the limiting cylinder, the reagent needle can move in the limiting cylinder, the limiting cylinder is fixedly connected with the needle arm seat, the reagent needle is fixedly connected with the connecting plate, the fixed seat is fixedly connected with the needle arm seat, a connecting protruding part is arranged on the fixed seat, a loop bar is arranged between the connecting protruding part and the needle arm seat, the loop bar penetrates through the connecting plate and is in sliding fit with the connecting plate, a spring is sleeved outside the loop bar, the sensing piece is fixedly connected with the connecting plate, the sensor is connected to one side of the fixed seat, and the sensing piece is matched with the sensor.

2. A reagent filling mechanism for chemiluminescent immunoassay according to claim 1 wherein a retaining ring is fixedly sleeved on the exterior of the reagent needle, the retaining ring being fixedly connected to the connecting plate.

3. A reagent filling mechanism for chemiluminescent immunoassay according to claim 2 wherein the collar is integrally formed with the web and the reagent needle is fixedly welded to the collar.

4. A reagent filling mechanism for chemiluminescent immunoassay according to claim 3 wherein the connecting protrusion extends in the direction of the connecting plate, one end of the spring is fixedly connected to the connecting protrusion, and the other end of the spring abuts against the connecting plate and is in movable engagement with the connecting plate.

5. A reagent filling mechanism for chemiluminescent immunoassay of claim 4 wherein the sensor has a U-shaped slot in the middle thereof, the sensor tab is perpendicular to the connector plate, and an end of the sensor tab remote from the connector plate is insertable into the sensor slot in the middle thereof.

6. The reagent dispensing mechanism of claim 5, wherein the sensor is screwed into the holder.

7. The reagent filling mechanism for chemiluminescent immunoassay of claim 6 wherein a limit protrusion is provided above the holder, the limit protrusion is provided with an open slot, the needle shank of the reagent needle passes through the open slot, and the depth of the open slot is greater than the distance of forward or reverse movement of the needle shank of the reagent needle in the open slot.

8. The reagent filling mechanism for chemiluminescent immunoassay of claim 7 wherein a cartridge is fixedly disposed on the needle arm holder, the cartridge being disposed on one side of the sensor.

9. The reagent filling mechanism for chemiluminescent immunoassay of claim 8 wherein a circuit board is further arranged on the needle arm seat, a protective cover is further fixedly arranged outside the circuit board, connecting pieces are fixedly arranged on two sides of the protective cover, and the connecting pieces are fixedly connected with the needle arm seat;

the needle arm seat is also fixedly provided with a connector, the middle part of the connector is provided with a shaft hole, and the shaft hole is connected with the spline shaft in a matched mode.

10. An analyser comprising a reagent filling mechanism for chemiluminescent immunoassay according to any one of claims 1 to 9.