TWI588486B - Liquid analyzing device - Google Patents

Description

Liquid analysis device

The present invention relates to an analytical device, and more particularly to a liquid analyzing device.

In clinical blood component testing, many types of blood analysis devices can be used to analyze blood. In the blood analysis device, after the blood and the medicine are contained in the analysis cassette, the analysis cassette is placed on the stage of the blood analysis device and the stage is driven to rotate, so that the blood and the medicine in the analysis cassette are mixed to generate a chemical reaction. In order to analyze the blood by means of optical detection. In such a blood analysis device, since the analysis cassette is fixedly placed on the stage of the blood analysis device, when the stage drives the analysis cassette to rotate, the blood in the analysis cassette is only subjected to centrifugal force in a single direction, and Flow in a single direction relative to the analysis cassette.

In such a blood analysis device, in order to allow the blood and the drug to be sufficiently mixed, it is generally necessary to first convert the stage from a rotating state to a stationary state, and then manually take the analysis cassette and change the direction, and then place it again. The stage is configured to change the orientation of the analysis cassette and drive the stage rotation again to allow the blood in the analysis cassette to flow in the other direction relative to the analysis cassette by analyzing the change in the orientation of the cassette Move to improve the mixing efficiency of blood and medicine, but this way will increase the working time.

The invention provides a liquid analysis device, comprising a carrier, a driving unit, a turntable and a steering mechanism. The driving unit is used to drive the stage to rotate. The turntable is rotatably disposed on the stage and is configured to carry an analysis cassette. The steering mechanism is connected between the stage and the turntable. When the drive unit drives the stage to rotate, the rotational speed of the stage is changed and a predetermined rotational speed is exceeded, the turntable rotates relative to the stage.

In an embodiment of the invention, when the driving unit drives the stage to change from a first rotation speed to a second rotation speed or from the second rotation speed to the first rotation speed, the turntable rotates relative to the stage, wherein the predetermined rotation speed is between Between the first rotational speed and the second rotational speed.

In an embodiment of the invention, when the stage is changed from the first rotational speed to the second rotational speed, the turntable rotates relative to the stage in a first direction; when the stage is changed from the second rotational speed to the first rotational speed, the turntable Rotating in a second direction relative to the stage, wherein the second direction is opposite to the first direction.

In an embodiment of the invention, the steering mechanism includes an elastic member, wherein when the rotation speed of the stage is less than the predetermined rotation speed, the elastic member has a first compression state, and the carrier is in a first orientation state. Wherein when the rotation speed of the stage is greater than the predetermined rotation speed, the elastic member has a second compression state, and the carrier is in a second orientation state. The second orientation state is that the turntable is rotated by an angle from the first orientation state with respect to the stage, and the second compression state is that the elastic member is compressed by the first compression state by a deformation amount.

In an embodiment of the invention, the steering mechanism includes an elasticity And wherein when the driving unit drives the stage to change from a first rotating speed to a second rotating speed, the turntable rotates relative to the loading stage, and the elastic member is compressed by a deformation amount, wherein the first rotating speed is less than the second rotating speed, and the predetermined rotating speed is Between the first speed and the second speed.

In an embodiment of the invention, the turntable has a center of mass and is not located at the center of rotation of the turntable. The steering mechanism includes an elastic member connected between the turntable and the stage.

In an embodiment of the invention, the turntable has a weight, the turntable combined weight has a center of mass and is not located at the center of rotation of the turntable, the steering mechanism includes an elastic member, and the elastic member is coupled to the turntable and the load. Between the stations.

In an embodiment of the invention, the steering mechanism includes a slider and an elastic member, wherein the slider connects the elastic member and is coupled to the turntable.

In an embodiment of the invention, the turntable has a gear, the slider has a rack, and the rack engages the gear.

In an embodiment of the invention, the stage has a guide rod, and the slider is slidably disposed on the guide rod.

Based on the above, in the liquid analysis device of the present invention, the driving relationship between the steering mechanism and the turntable is controlled by the centrifugal force of different magnitudes generated by the stages at different rotational speeds, and the turntable is rotated relative to the stage to turn the turntable Switch to a different orientation. Accordingly, the liquid analysis device proposed by the present invention can automatically switch the orientation of the turntable, thereby effectively improving work efficiency.

The above described features and advantages of the invention will be apparent from the following description.

50‧‧‧Analysis card

100, 200, 300‧‧‧ liquid analysis device

110, 210, 310‧‧‧

110a, 210a‧‧‧ first stop structure

120, 220, 320‧‧‧ turntables

122a, 222a‧‧‧second stop structure

130, 230, 330‧‧ ‧ steering mechanism

132, 232, 332‧‧‧ elastic parts

140‧‧‧Drive unit

210b‧‧‧guide

312‧‧‧guides

322a‧‧‧ gear

334‧‧‧ Slider

334a‧‧‧Rack

C1, C2‧‧‧ Rotation Center

P1‧‧‧ first position

P2‧‧‧ second position

R1, R1', R2‧‧‧ direction of rotation

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a liquid analysis device according to an embodiment of the present invention.

Fig. 2 is a perspective view showing a part of the components of the liquid analyzing device of Fig. 1.

Figure 3 is a block diagram of a portion of the components of the liquid analysis device of Figure 1.

4 is a top plan view of a portion of the components of the liquid analysis device of FIG. 1 with the turntable in a first orientation state.

Figure 5 is a top plan view of a portion of the components of the liquid analysis device of Figure 1 with the carousel in a second orientation.

Fig. 6 is a perspective view showing a part of a member of a liquid analyzing device according to another embodiment of the present invention.

Figure 7 is a top plan view of a portion of the components of the liquid analysis device of Figure 6 with the carousel in a first orientation.

Figure 8 is a top plan view of a portion of the components of the liquid analysis device of Figure 6 with the carousel in a second orientation.

Fig. 9 is a perspective view showing a part of a liquid analyzing device according to another embodiment of the present invention.

Figure 10 is a top plan view of a portion of the components of the liquid analysis device of Figure 9 with the turntable in a first orientation.

Figure 11 is a top plan view of a portion of the components of the liquid analysis device of Figure 9 with the carousel in a second orientation.

1 is a perspective view of a liquid analysis device 100 according to an embodiment of the present invention. FIG. 2 is a perspective view showing a part of the components of the liquid analysis device 100 of FIG. 1. 3 is a block diagram of a portion of the components of the liquid analysis device 100 of FIG. 1. 4 is a top plan view of a portion of the components of the liquid analysis device 100 of FIG. 1 with the turntable 120 in a first orientation state. Referring to FIG. 1 to FIG. 4 , the liquid analysis device 100 of the present embodiment is, for example, a blood analysis device, including a stage 110 , at least one turntable 120 (shown as two), and at least one steering mechanism 130 (shown as two And a driving unit 140.

The driving unit 140 is, for example, a motor and is used to drive the stage 110 to rotate. Each turntable 120 is rotatably disposed on the stage 110 and is configured to carry an analysis cassette 50. Each analysis cassette 50 is used to hold a liquid to be tested (such as blood and corresponding medicament). Each of the turntables 120 is rotatable relative to the stage 110 along the center of rotation C1, and the center of mass of the turntable 120 is not located at the center of rotation C1 of the turntable 120. Each steering mechanism 130 includes an elastic member 132, and each elastic member 132 is coupled between the carrier 110 and the corresponding turntable 120. In this embodiment, each of the elastic members 132 is, for example, a torsion spring or a spring spring and surrounds the rotation center C1 of the corresponding turntable 120, so that the elastic members 132 extend along the rotation direction R1 of the corresponding turntable 120, and are adapted to be along the turntable. The rotational direction R1 of 120 is elastically deformed. The present invention does not limit the number of turntables 120 and steering mechanisms 130, which may be two as shown in Figure 1, or other suitable numbers as desired.

The mode of operation of the liquid analysis device 100 of the embodiment of the present invention will be described below with reference to the drawings. Please refer to FIG. 4 and FIG. 5 . FIG. 5 is another schematic top view of a portion of the components of the liquid analysis device 100 of FIG. 1 , wherein the turntable 120 is in a second orientation state. When the analysis cassette 50 is placed on the turntable 120 of the liquid analysis device 100, the drive The unit 140 first drives the stage 110 to rotate at a first rotational speed. At this time, the turntable 120 on the stage 110 is, for example, in the first orientation state shown in FIG. 4, and the elastic member 132 has a first compressed state.

When the stage 110 is rotated at the first rotational speed for a period of time, the driving unit 140 starts to drive the stage 110 to change the rotational speed and exceeds a predetermined rotational speed. Specifically, when the stage 110 is rotated at the first rotation speed for a period of time, the driving unit 140 drives the stage 110 to change from the first rotation speed to a second rotation speed, wherein the predetermined rotation speed is between the first rotation speed and the second rotation speed. In this manner, the drive unit 140 drives the stage 110 to change the rotational speed and exceed the predetermined rotational speed.

Moreover, when the driving unit 140 drives the stage 110 to change the rotation speed and exceeds the predetermined rotation speed, the rotation speed change drives the linkage between the steering mechanism 130 and the turntable 120 to rotate the turntable 120 relative to the stage 110. At this time, the liquid analyzing device 100 is, for example, in the second orientation state shown in FIG. 5, and the elastic member 132 has a second compressed state.

In the present embodiment, since the center of mass of the turntable 120 is not located at the center of rotation C1 of the turntable 120, when the drive unit 140 drives the stage 110 to change the rotational speed and exceeds the predetermined rotational speed, the centrifugal force is changed and turned by the center of mass of the turntable 120. The relationship between the elastic forces of the resilient members 132 of the mechanism 130 can drive the turntable 120 to rotate relative to the stage 110.

For example, assuming that the second rotational speed is greater than the first rotational speed, when the driving unit 140 drives the stage 110 of FIG. 4 to change from the first rotational speed to the second rotational speed and exceeds the predetermined rotational speed, the centrifugal force generated by the rotation of the stage 110 becomes large. And the center of mass of the turntable 120 The centrifugal force received is also increased. When the center of mass of the turntable 120 receives a centrifugal force greater than the elastic force of the elastic member 132 of the steering mechanism 130, the turntable 120 can compress the elastic member 132 and rotate an angle with respect to the stage 110 in a first direction (eg, clockwise direction). To the second orientation state as shown in FIG. At the same time, the elastic member 132 is compressed from the first compressed state to the second compressed state.

On the other hand, when the driving unit 140 drives the stage 110 of FIG. 5 to change from the second rotation speed to the first rotation speed and exceeds the predetermined rotation speed, the centrifugal force generated by the rotation of the stage 110 becomes small, and the centrifugal force received by the center of the turntable 120 is also Become smaller. When the centrifugal force of the center of mass of the turntable 120 is less than the elastic force of the elastic member 132 of the steering mechanism 130, the turntable 120 is pushed by the elastic member 132 to a second direction opposite to the first direction with respect to the stage 110 (for example Turn counterclockwise) to the first orientation state as shown in FIG. At the same time, the elastic member 132 returns from the second compressed state to the first compressed state.

In the embodiment of the present invention, the centrifugal force generated when the stage 110 is rotated at a predetermined rotational speed corresponds to the elastic force of the elastic member 132 of the steering mechanism 130.

Specifically, when the driving unit 140 drives the stage 110 to rotate at a second rotation speed greater than a predetermined rotation speed, the centrifugal force generated by the rotation of the stage 110 is greater than the elastic force of the elastic member 132, so the turntable 120 can be rotated relative to the stage 110 and The elastic member 132 is compressed to cause the elastic member 132 to generate a deformation amount, and is compressed from the first compressed state to the second compressed state, at which time the turntable 120 is in the second orientation state as shown in FIG. On the contrary, when the driving unit 140 drives the stage 110 to rotate at a first rotation speed less than a predetermined rotation speed, the centrifugal force generated by the rotation of the stage 110 is smaller than the elastic force of the elastic member 132. Therefore, the turntable 120 cannot compress the elastic member 132, and the elastic member 132 returns to the first compressed state from the second compressed state, and the turntable 120 is in the first orientation state as shown in FIG.

In one embodiment, the first rotational speed and the second rotational speed are, for example, 2000 rpm and 4000 rpm or other appropriately different rotational speed values, which are not limited by the present invention. In addition, in other embodiments, a weight may be disposed on the turntable 120 such that the center of mass of the turntable 120 in combination with the weight is not located at the center of rotation of the turntable 120.

As described above, the liquid analysis device 100 according to the embodiment of the present invention controls the actuation relationship between the steering mechanism 130 and the turntable 120 by the centrifugal force of different magnitudes generated by the stage 110 at different rotational speeds, so that the turntable 120 is relatively loaded. The stage 110 is rotated to switch the turntable 120 to a different orientation state, such as the first orientation state shown in FIG. 4 and the second orientation state shown in FIG. Accordingly, the liquid analysis device 100 proposed by the embodiment of the present invention can automatically switch the orientation of the turntable 120, so that the work efficiency can be effectively improved.

In the present embodiment, the stage 110 is rotated in a single direction, that is, when the stage 110 is rotated at the first rotation speed and the second rotation speed, the rotation direction R2 is the same, but the invention is not limited thereto. In addition, the driving unit 140 alternately drives the stage 110 to rotate at the first rotation speed and the second rotation speed, so that the orientation of the rotation table 120 can be alternately switched alternately as shown in FIG. 4 during the process of changing the rotation speed of the stage 110. The first orientation state and the second orientation state shown in FIG. 5 are effective to increase the mixing speed of blood and medicament.

In this embodiment, the stage 110 has at least one first stop structure. 110a (shown as two), the turntable 120 has at least one second stop structure 122a (shown as one), and the second stop structure 122a is limited to be movable only in two with the rotation of the turntable 120 Between a stop structure 110a. That is, the interference of the first stop structure 110a and the second stop structure 122a can limit the range of rotation of the turntable 120 relative to the stage 110.

Fig. 6 is a perspective view showing a part of a member of a liquid analysis device 200 according to another embodiment of the present invention. Figure 7 is a top plan view of a portion of the components of the liquid analysis device 200 of Figure 6, with the turntable 220 in a first orientation. Figure 8 is a top plan view of a portion of the components of the liquid analysis device 200 of Figure 6, with the turntable 220 in a second orientation. In the liquid analysis device 200 shown in FIGS. 6 to 8, the stage 210, the first stop structure 210a, the turntable 220, the second stop structure 222a, the steering mechanism 230, and the elastic member 232 function in a manner similar to that of FIG. 1 to The operation of the stage 110, the first stopper structure 110a, the turntable 120, the second stopper structure 122a, the steering mechanism 130, and the elastic member 132 of the liquid analysis device 100 shown in Fig. 5 .

The liquid analysis device 200 differs from the liquid analysis device 100 in that the elastic member 230 is a telescopic spring rather than a torsion spring or a spring. In addition, the stage 210 has a guiding groove 210b extending along the rotating direction R1' of the turntable 220. The elastic member 230 is located in the guiding groove 210b and is adapted to be rotated along the rotating direction of the turntable 220 by the guiding of the guiding groove 210b. Produces elastic deformation. In the present embodiment, the liquid analysis device 200 can also control the actuation relationship between the steering mechanism 230 and the turntable 220 by the rotational speed conversion of the stage 210, thereby switching the orientation of each turntable 220, as shown in FIGS. 7 and 8. This will not be repeated here.

Fig. 9 is a perspective view showing a part of a member of a liquid analysis device 300 according to another embodiment of the present invention. Figure 10 is a top plan view of a portion of the components of the liquid analysis device 300 of Figure 9, with the turntable 320 in a first orientation. Figure 11 is a top plan view of a portion of the components of the liquid analysis device 300 of Figure 9, with the turntable 320 in a second orientation. In the liquid analysis device 300 shown in FIGS. 9 to 11, the connection relationship between the stage 310 and the turntable 320 is similar to the connection relationship between the stage 110 and the turntable 120 of the liquid analysis device 100 shown in FIGS. 1 to 5.

The liquid analysis device 300 differs from the liquid analysis device 100 in that the steering mechanism 330 includes a slider 334 in addition to the elastic member 332. The slider 334 abuts against the elastic member 332 and is coupled to the turntable 320. In this embodiment, the stage 310 can have a guide rod 312. The slider 334 has a rack 334a and is slidably disposed on the guide rod 312 of the stage 310. The turntable 320 has a gear 322a at its center of rotation C2, and the rack 334a of the slider 334 is engaged with the gear 322a of the turntable 320. The elastic member 332 is a telescopic spring and is connected between the slider 334 and the stage 310 and sleeved on the guide rod 312.

In the present embodiment, when the rotational speed of the stage 310 is changed, the slider 334 is moved by the change of the centrifugal force received and the elastic force of the elastic member 332, thereby driving the turntable 320 to rotate.

For example, when the turntable 320 is in the first orientation state as shown in FIG. 10, when the stage 310 is increased from the first rotational speed to the second rotational speed and exceeds the predetermined rotational speed, the centrifugal force generated by the rotation of the stage 310 becomes large. The centrifugal force received by the slider 334 also becomes large. When the centrifugal force received by the slider 334 is greater than the elastic force of the elastic member 332, the slider 334 can compress the elastic member 132 and slide from a first position P1 shown in FIG. Up to a second position P2 as shown in FIG. During this process, the slider 334 rotates the turntable 320 by the meshing relationship between the rack 334a and the gear 322a, so that the turntable 320 is rotated relative to the stage 310 to the second orientation state as shown in FIG. At the same time, the elastic member 332 is compressed from the first compressed state to the second compressed state.

On the other hand, when the stage 310 of FIG. 11 is lowered by the second rotation speed to the first rotation speed and the predetermined rotation speed is exceeded, the centrifugal force generated by the rotation of the stage 310 becomes small, and the centrifugal force received by the slider 334 also becomes small. When the centrifugal force received by the slider 334 is smaller than the elastic force of the elastic member 332, the slider 334 is pushed by the elastic member 132 to slide from the second position P2 shown in FIG. 11 to the first position P1 as shown in FIG. During this process, the slider 334 rotates the turntable 320 by the meshing relationship between the rack 334a and the gear 322a, so that the turntable 320 is rotated relative to the stage 310 to the first orientation state as shown in FIG. At the same time, the elastic member 332 returns to the first compressed state from the second compressed state.

In summary, in the liquid analysis device of the present invention, the driving relationship between the steering mechanism and the turntable is controlled by the centrifugal force of different magnitudes generated by the stages at different rotational speeds, so that the turntable rotates relative to the stage, Switch the dial to a different orientation. Accordingly, the liquid analysis device proposed by the present invention can automatically switch the orientation of the turntable, thereby effectively improving work efficiency.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Liquid analysis device

110‧‧‧stage

120‧‧‧ Turntable

130‧‧‧steering mechanism

132‧‧‧Flexible parts

C1‧‧‧Rotation Center

Claims (10)

A liquid analysis device includes: a loading stage; a driving unit for driving the stage to rotate; a turntable rotatably disposed on the stage for carrying an analysis cassette; and a steering mechanism Connected between the stage and the turntable, wherein the steering mechanism includes an elastic member, wherein when the driving unit drives the stage to rotate, the rotational speed of the stage is changed and a predetermined rotational speed is exceeded, the elastic member The compression state changes and the turntable rotates relative to the stage. The liquid analysis device of claim 1, wherein the turntable is turned when the drive unit drives the stage to change from a first rotational speed to a second rotational speed or from the second rotational speed to the first rotational speed. Rotating relative to the stage, wherein the predetermined rotational speed is between the first rotational speed and the second rotational speed. The liquid analysis device according to claim 2, wherein when the stage is changed from the first rotation speed to the second rotation speed, the turntable rotates in a first direction relative to the stage; When the second rotational speed is changed to the first rotational speed, the turntable rotates in a second direction relative to the stage, wherein the second direction is opposite to the first direction. The liquid analysis device of claim 1, wherein the elastic member has a first compressed state when the rotational speed of the stage is less than the predetermined rotational speed. And the stage is in a first orientation state, wherein when the rotation speed of the stage is greater than the predetermined rotation speed, the elastic member has a second compression state, and the carrier is in a second orientation state, wherein the second orientation The state is that the turntable is rotated by an angle relative to the stage from the first orientation state, and the second compression state is that the elastic member is compressed by the first compression state by a deformation amount. The liquid analysis device according to claim 1, wherein when the driving unit drives the stage to change from a first rotation speed to a second rotation speed, the turntable rotates relative to the stage, and the elastic member is Compressing a deformation amount, wherein the first rotation speed is less than the second rotation speed, and the predetermined rotation speed is between the first rotation speed and the second rotation speed. The liquid analysis device according to claim 1, wherein the turntable has a center of mass, the center of mass is not located at a center of rotation of the turntable, and the elastic member is coupled between the turntable and the stage. The liquid analysis device of claim 1, wherein the turntable has a weight, the turntable combined with the weight has a center of mass, the center of mass is not located at a center of rotation of the turntable, and the elasticity A piece is coupled between the turntable and the stage. The liquid analysis device of claim 1, wherein the steering mechanism further comprises a slider that connects the elastic member and is coupled to the turntable. The liquid analysis device according to claim 8, wherein the turntable has a gear, and the slider has a rack that meshes with the gear. The liquid analysis device of claim 8, wherein the stage has a guide rod, and the slider is slidably disposed on the guide rod.