CN220040453U

CN220040453U - Blood sample detector

Info

Publication number: CN220040453U
Application number: CN202320937757.8U
Authority: CN
Inventors: 孙茜
Original assignee: Tashi Biotechnology Suzhou Co ltd
Current assignee: Tashi Biotechnology Suzhou Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-11-17
Anticipated expiration: 2033-04-24

Abstract

The utility model discloses a blood sample detector, which comprises a turntable device, a pipetting device and a detection device; the turntable device comprises a reagent card turntable and a turntable motor for driving the reagent card turntable to rotate; the reagent card turntable is provided with a plurality of reagent card mounting positions arranged in a circumferential array; the pipetting device comprises a pipetting mechanism and a driving mechanism for driving a pipetting head of the pipetting mechanism to do biaxial movement; the detection device is positioned below the reagent card turntable; the pipetting device and the detection device act on the reagent cards on two different reagent card mounting positions at the same time; the reagent card is capable of holding a blood sample and a reagent. According to the utility model, by arranging the reagent card turntable with a plurality of reagent card mounting positions, the operations of pipetting, detecting and taking and placing the reagent cards can be simultaneously performed, the detection efficiency is high, and meanwhile, as pipetting operation is automatically performed by the pipetting device, the links of manual operation can be reduced, the error rate is reduced, and the risk of manually polluting samples is also reduced.

Description

Blood sample detector

Technical Field

The utility model relates to the technical field of medical detectors, in particular to a blood sample detector.

Background

In medical testing, blood is an important test sample, and by testing blood, a lot of information reflecting the health condition of a person can be obtained. In the prior art, patent CN108693344a discloses a common blood detector, in this kind of blood detector, need the manual work mix blood and reagent well put on the test bench, the test bench slides to detect the back again and slides out, takes down the sample manually and put new sample again, this kind of scheme has the detection inefficiency, needs the defect that the link of manual operation is many.

Disclosure of Invention

The utility model aims to: in order to overcome the defects in the prior art, the utility model provides the blood sample detector which needs less links of manual operation and has high detection efficiency.

The technical scheme is as follows: in order to achieve the above object, the blood sample detector of the present utility model includes a turntable device, a pipetting device and a detecting device;

the turntable device comprises a reagent card turntable and a turntable motor for driving the reagent card turntable to rotate; the reagent card turntable is provided with a plurality of reagent card mounting positions arranged in a circumferential array;

the pipetting device comprises a pipetting mechanism and a driving mechanism for driving a pipetting head of the pipetting mechanism to do biaxial movement; the detection device is positioned below the reagent card turntable;

the pipetting device and the detection device act on the reagent cards on two different reagent card mounting positions at the same time; the reagent card is capable of holding a blood sample and a reagent.

Further, the driving mechanism comprises a Z-axis driving mechanism in driving connection with the pipetting head; the X-axis driving mechanism can drive the Z-axis driving mechanism and the whole translation of the pipetting head.

Further, the Z-axis driving mechanism comprises a transverse translation seat, a Z-axis motor and a driving piece; the liquid transferring mechanism further comprises a liquid pump connected with the liquid transferring head, and the liquid pump is arranged on the transverse translation seat; the Z-axis motor drives the driving piece to do lifting motion relative to the transverse translation seat through a lead screw;

the Z-axis driving mechanism further comprises a lifting seat arranged below the driving piece, and the pipetting head is fixed on the lifting seat; an elastic device is arranged between the lifting seat and the driving piece.

Further, the elastic device comprises a guide post which is arranged on the lifting seat and can slide relative to the driving piece, and a pressure spring which is sleeved on the guide post in a series manner.

Further, the lifting seat and the driving piece are L-shaped, a first sliding rail is arranged on the lifting seat, and a first sliding block matched with the first sliding rail is arranged on the driving piece; and a second sliding rail is arranged on the transverse translation seat, and a second sliding block which is in sliding fit with the second sliding rail is arranged on the lifting seat.

Further, the X-axis driving mechanism comprises an X-axis motor and a synchronous belt assembly, and the X-axis motor drives the transverse translation seat to move through the synchronous belt assembly.

Further, the reagent card is provided with a sample accommodating groove and a reagent accommodating groove; the bottom of the sample accommodating groove is made of transparent materials.

Further, the detection device comprises a light source, a light filtering mechanism and a photosensitive unit; in the detection process, the sample accommodating groove is arranged between the light source and the light filtering mechanism.

Further, the light filtering mechanism comprises a rotating disc body and a plurality of light filters which are arranged on the rotating disc body in a circumferential array mode, and the wavelength ranges corresponding to the light filters are different; the rotary disc body is driven to rotate by the rotary driving motor so as to align different optical filters with the light source.

Further, the light filtering mechanism and the photosensitive unit are both installed on an installation seat, an accommodating cavity is formed in the installation seat, the rotating disc body is arranged in the accommodating cavity, and the accommodating cavity is provided with a light inlet hole aligned with the light source.

The beneficial effects are that: according to the blood sample detector, the reagent card rotating disc with the plurality of reagent card mounting positions is arranged, so that pipetting, detection and reagent card taking and placing operations can be performed simultaneously, the detection efficiency is high, meanwhile, as pipetting operation is automatically performed by the pipetting device, links of manual operation can be reduced, error rate is reduced, and the risk of manually polluting samples is reduced.

Drawings

FIG. 1 is a perspective view of a blood sample meter;

FIG. 2 is a side view block diagram of a blood sample meter;

FIG. 3 is a perspective view of a pipetting mechanism;

FIG. 4 is a side view of the pipetting mechanism;

FIG. 5 is a sectional view of a combination of a turntable assembly and a detection assembly;

fig. 6 is a graph of the result of the filter mechanism.

In the figure: 1-a turntable device; 11-a reagent card turntable; 1 a-reagent card mounting location; 12-a turntable motor; 2-pipetting means; 21-a pipetting mechanism; 21 a-pipetting head; 21 b-a liquid pump; a 22-Z axis driving mechanism; 220-a transverse translation seat; 221-Z axis motor; 222-a driver; 223-screw; 224-lifting seat; 225-a guide post; 226-a compression spring; 227-a first slide rail; 228-a second slide rail; 23-X axis driving mechanism; 231-X axis motor; 232-a timing belt assembly; 24-camera; 3-a detection device; 31-a light source; 32-a light filtering mechanism; 321-rotating the disc body; 322-optical filters; 323 a rotary drive motor; 33-a photosensitive unit; 34-mounting base; 4-a reagent card; 41-a sample-receiving well; 42-reagent holding tank.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

The blood sample detector shown in fig. 1-2 comprises a turntable device 1, a pipetting device 2 and a detection device 3; the turntable device 1 comprises a reagent card turntable 11 and a turntable motor 12 for driving the reagent card turntable 11 to rotate; the reagent card turntable 11 is provided with a plurality of reagent card mounting positions 1a arranged in a circumferential array; the pipetting device 2 comprises a pipetting mechanism 21 and a driving mechanism for driving a pipetting head 21a of the pipetting mechanism 21 to do biaxial motion, the pipetting device 2 also comprises a camera 24, and a control system can acquire information such as the model of a reagent card, the position of a containing groove of the reagent card and the like through the camera 24 so as to facilitate pipetting; the detection device 3 is positioned below the reagent card rotating disc 11; the pipetting device 2 and the detection device 3 both act on the reagent card 4 on two different reagent card mounting locations 1a at the same time, and the reagent card 4 is capable of accommodating a blood sample and a reagent.

Specifically, the reagent card 4 has a sample accommodation groove 41 and a reagent accommodation groove 42; the bottom of the sample receiving groove 41 is made of transparent material.

As shown in fig. 5, the detecting device 3 includes a light source 31, a filter mechanism 32, and a photosensitive unit 33; during the detection process, the sample receiving groove 41 is disposed between the light source 31 and the light filtering mechanism 32.

In this embodiment, the reagent card turntable 11 has 4 reagent card mounting locations 1a, and in operation, the pipetting device 2 performs pipetting operations on the reagent card 4 on one of the reagent card mounting locations 1a to transfer the reagent in the reagent accommodating groove 42 into the sample accommodating groove 41 so that the reagent is mixed with the sample. At the same time, the detection device 3 can optically detect the sample in the reagent card 4 at the other reagent card mounting position 1a, and the reagent card 4 at the reagent card mounting position 1a has completed the pipetting operation via the pipetting device 2. Meanwhile, the reagent card 4 on the other reagent card mounting position 1a can be manually taken out and put in, namely, the reagent card 4 with finished detection is taken out, and a new reagent card 4 is put in.

In the process, the old reagent card 4 is only needed to be taken down manually, the reagent card 4 filled with the sample is filled into the reagent card mounting position 1a, other operations are automatically completed by the detector, the links of manual participation are fewer, the error rate can be reduced, and the risk of manually polluting the sample is also reduced; in addition, can carry out the operation of pipetting, detection and getting and putting the reagent card simultaneously, detection efficiency is high.

In particular, as shown in fig. 3-4, the drive mechanism includes a Z-axis drive mechanism 22 drivingly connected to the pipetting head 21 a; and an X-axis driving mechanism 23 capable of driving the Z-axis driving mechanism 22 and the entire translation of the pipetting head 21 a.

The Z-axis driving mechanism 22 includes a horizontal translation seat 220, a Z-axis motor 221, and a driving member 222; the pipetting mechanism 21 further comprises a liquid pump 21b connected to the pipetting head 21a, the liquid pump 21b being mounted on the lateral translation seat 220; the Z-axis motor 221 drives the driving piece 222 to do lifting motion relative to the transverse translation seat 220 through a lead screw 223; the Z-axis driving mechanism 22 further comprises a lifting seat 224 disposed below the driving member 222, and the pipetting head 21a is fixed on the lifting seat 224; elastic means are provided between the lifting seat 224 and the driving member 222. The elastic means comprise a guide post 225 mounted on the lifting seat 224 and capable of sliding with respect to the driving member 222, and a compression spring 226 sleeved on the guide post 225.

By providing the elastic device, when the driving member 222 moves downward, the lifting seat 224 moves downward under the action of its own gravity and the pushing action of the pressure spring 226, and when the driving member 222 is excessively fed, the lifting seat 224 can lift up relative to the driving member 222, so as to prevent the end portion of the pipetting head 21a from contacting the bottom of the reagent accommodating groove 42 during pipetting and then the driving member 222 continues to descend, resulting in damage to the pipetting head 21a or the bottom of the reagent accommodating groove 42. Further, by providing the elastic means, the driving member 222 can feed a little more downward so that the end of the pipetting head 21a is in sufficient contact with the bottom of the reagent receiving well 42 and the reagent therein can be sucked out sufficiently.

Preferably, the lifting seat 224 and the driving member 222 are both L-shaped, a first sliding rail 227 is installed on the lifting seat 224, and a first sliding block matched with the first sliding rail 227 is installed on the driving member 222; the horizontal translation seat 220 is provided with a second sliding rail 228, and the lifting seat 224 is provided with a second sliding block in sliding fit with the second sliding rail 228. By this 3-structure layout, the Z-axis drive mechanism 22 can be made compact and slim.

The X-axis driving mechanism 23 includes an X-axis motor 231 and a timing belt assembly 232, and the X-axis motor 231 drives the lateral translation stage 220 to move through the timing belt assembly 232.

As shown in fig. 6, the filtering mechanism 32 includes a rotating disc 321 and a plurality of optical filters 322 arranged on the rotating disc 321 in a circumferential array, where the wavelength ranges corresponding to the optical filters 322 are different; the rotating disc 321 is driven to rotate by a rotary driving motor 323, so that different optical filters 322 are aligned with the light source 31, the optical filters 322 can pass light in a specific wavelength range, and the absorbance data of the blood sample on different light can be obtained by aligning the different optical filters 322 with the light source 31 and collecting data generated by the photosensitive unit 33, so that index data of specific components in blood can be obtained by analysis. In the method, a plurality of light sources are not required to be arranged, different optical filters 322 are aligned with the light sources 31 by driving the rotating disc 321 to rotate, the structure is compact and small, and the operation can be performed without moving samples.

Preferably, the filter mechanism 32 and the photosensitive unit 33 are both mounted on a mounting seat 34, the mounting seat 34 has a containing cavity therein, the rotating disc 321 is disposed in the containing cavity, and the containing cavity has a light inlet aligned with the light source 31.

The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.

Claims

1. A blood sample detector, which is characterized by comprising a turntable device (1), a pipetting device (2) and a detection device (3);

the turntable device (1) comprises a reagent card turntable (11) and a turntable motor (12) for driving the reagent card turntable (11) to rotate; the reagent card turntable (11) is provided with a plurality of reagent card mounting positions (1 a) which are arranged in a circumferential array;

the pipetting device (2) comprises a pipetting mechanism (21) and a driving mechanism for driving a pipetting head (21 a) of the pipetting mechanism (21) to do biaxial movement; the detection device (3) is positioned below the reagent card rotating disc (11);

the pipetting device (2) and the detection device (3) act on the reagent card (4) on two different reagent card mounting positions (1 a) at the same time; the reagent card (4) is capable of holding a blood sample and a reagent.

2. The blood sample meter according to claim 1, wherein the drive mechanism comprises a Z-axis drive mechanism (22) in driving connection with the pipetting head (21 a); the device also comprises an X-axis driving mechanism (23) which can drive the Z-axis driving mechanism (22) and the whole translation of the pipetting head (21 a).

3. The blood sample meter of claim 2, wherein the Z-axis drive mechanism (22) comprises a lateral translation mount (220), a Z-axis motor (221), and a drive (222); the pipetting mechanism (21) further comprises a liquid pump (21 b) connected with the pipetting head (21 a), and the liquid pump (21 b) is mounted on the transverse translation seat (220); the Z-axis motor (221) drives the driving piece (222) to do lifting movement through a lead screw (223);

the Z-axis driving mechanism (22) further comprises a lifting seat (224) arranged below the driving piece (222), and the pipetting head (21 a) is fixed on the lifting seat (224); an elastic device is arranged between the lifting seat (224) and the driving piece (222).

4. A blood sample meter according to claim 3, wherein the elastic means comprises a guide post (225) mounted on the lifting base (224) and slidable relative to the driving member (222), and a compression spring (226) strung around the guide post (225).

5. A blood sample meter according to claim 3, wherein the lifting seat (224) and the driving member (222) are L-shaped, a first sliding rail (227) is mounted on the lifting seat (224), and a first sliding block matched with the first sliding rail (227) is mounted on the driving member (222); a second sliding rail (228) is arranged on the transverse translation seat (220), and a second sliding block which is in sliding fit with the second sliding rail (228) is arranged on the lifting seat (224).

6. A blood sample meter according to claim 3, wherein the X-axis drive mechanism (23) comprises an X-axis motor (231) and a timing belt assembly (232), the X-axis motor (231) driving the movement of the lateral translation stage (220) via the timing belt assembly (232).

7. The blood sample meter according to claim 1, wherein the reagent card (4) has a sample receiving groove (41) and a reagent receiving groove (42); the bottom of the sample accommodating groove (41) is made of transparent materials.

8. The blood sample meter according to claim 7, wherein the detection device (3) comprises a light source (31), a filter mechanism (32) and a light sensing unit (33); in the detection process, the sample accommodating groove (41) is arranged between the light source (31) and the light filtering mechanism (32).

9. The blood sample meter according to claim 8, wherein the light filtering mechanism (32) comprises a rotary disk body (321) and a plurality of light filters (322) circumferentially arranged on the rotary disk body (321), and wavelength ranges corresponding to the light filters (322) are different; the rotary disk body (321) is driven to rotate by a rotary driving motor (323) so as to align the different optical filters (322) with the light source (31).

10. The blood sample meter according to claim 9, wherein the light filtering mechanism (32) and the light sensing unit (33) are both mounted on a mounting seat (34), the mounting seat (34) has a containing cavity therein, and the rotating disc body (321) is disposed in the containing cavity.