CN213780106U

CN213780106U - Closed single sample introduction device of blood cell analyzer

Info

Publication number: CN213780106U
Application number: CN202022535711.2U
Authority: CN
Inventors: 何刚; 唐夏翔; 王志华; 秦就强; 胡朝云; 张周文
Original assignee: Guilin Biotoo Medical Technology Co ltd
Current assignee: Guilin Biotoo Medical Technology Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2021-07-23
Anticipated expiration: 2030-11-05

Abstract

The utility model relates to a closed single sample introduction device of a blood cell analyzer, which comprises a shell, a turnover seat, an adapter, a locking mechanism and a stroke boosting mechanism; the turnover seat is rotatably arranged in the shell, the adapter is fixed on the turnover seat, and the interior of the adapter is matched with the vacuum blood collection tube; the top of the shell is provided with a sampling port through which the needle head penetrates into the vacuum blood sampling tube for sampling, and the side part of the shell is provided with an opening through which the adapter is taken out of the shell or pushed into the shell by rotating the turnover seat; a counterweight block for driving the turning seat to rotate is arranged on one side of the bottom of the turning seat close to the opening; the locking mechanism is positioned in the shell and below the turnover seat correspondingly, and locks or unlocks the position of the turnover seat; the stroke boosting mechanism is arranged on one side of the shell far away from the opening and used for sensing the position of the adapter and applying a pushing force to the adapter towards the opening. The device simple structure, compactness, reliable can supply small-size hematology analyzer to use, avoids handheld open advance kind potential risk that brings.

Description

Closed single sample introduction device of blood cell analyzer

Technical Field

The utility model relates to the field of medical equipment, concretely relates to blood cell analyzer's single sampling device of sealing.

Background

A blood cell analyzer is a commonly used instrument for quantitative analysis of blood cells in clinical examination. Due to the cost pressure and space limitation, the small-sized blood cell analyzer cannot use the closed puncture sampling function generally provided by the large-sized blood cell analyzer. The general small-size blood cell analyzer all adopts uncapping-handheld open sampling mode, and above-mentioned kind mode has the sample and reveals the risk and the hand hidden danger of sampling needle stick, has the potential safety hazard to the operator.

The large-scale instrument generally has two sets of sample introduction modes, namely a conventional batch sample introduction mode and an emergency single sample introduction mode. The same risks apply to the open single sample injection site of most large hematology analyzers on the market as to small instruments. The existing few parts with the single sample injection part for emergency treatment of the instrument for sealing the single sample injection for emergency treatment contain a structure conversion part, an energy storage part, a motor and other driving parts, a multiple detection part, a linkage part and the like, so the parts have complex and large structure and higher cost, and are generally difficult to be applied to a small blood cell analyzer.

Therefore, a small blood cell analyzer with a closed sample introduction function is lacking in the market.

SUMMERY OF THE UTILITY MODEL

In summary, in order to overcome the deficiencies of the prior art, the present invention provides a closed single sample introduction device of a blood cell analyzer.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a closed single sample introduction device of a blood cell analyzer comprises a shell, a turnover seat, an adapter, a locking mechanism and a stroke boosting mechanism; the turnover seat is rotatably arranged in the shell, the adapter is fixed on the turnover seat, and the interior of the adapter is matched with the vacuum blood collection tube; the top of the shell is provided with a sampling port through which a needle head penetrates into the vacuum blood collection tube for sampling, and the side of the shell is provided with an opening through which the adapter is taken out of the shell or pushed into the shell by rotating the turnover seat; a counterweight block for driving the turnover seat to rotate is arranged on one side, close to the opening, of the bottom of the turnover seat; the locking mechanism is positioned in the shell and corresponds to the lower part of the turnover seat, and locks or unlocks the position of the turnover seat; the stroke boosting mechanism is arranged on one side, far away from the opening, of the shell and used for sensing the position of the adapter in the shell and applying a pushing force to the adapter towards the opening when the position of the overturning seat is unlocked.

The utility model has the advantages that: the structure is simple, compact and reliable, and the device can be used for a small blood cell analyzer, and avoids the potential risks of sample leakage and sampling needle pricking brought by hand-held open sample introduction.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

furthermore, bearings are respectively arranged at the positions of the shell corresponding to the front side and the rear side of the turnover seat, a rotating shaft is fixed on the turnover seat, and the front end and the rear end of the rotating shaft are respectively connected with and penetrate through the corresponding bearings.

The beneficial effect of adopting the further scheme is that: the turnover seat can be rotatably arranged in the shell.

Furthermore, a damper mounting seat is arranged at the position, corresponding to the front end of the rotating shaft, of the front side of the shell, and a roller damper which is connected with the front end of the rotating shaft and limits the rotating speed of the rotating shaft is arranged on the damper mounting seat.

The beneficial effect of adopting the further scheme is that: the rotating speed of the rotating shaft is limited by the roller damper, so that the rotating speed of the overturning seat is moderate.

Further, a gear is fixedly sleeved at the front end of the rotating shaft, and a gear type damper which corresponds to the gear and provides bidirectional damping for the gear is arranged on the front side of the shell.

The beneficial effect of adopting the further scheme is that: the gear type damper is adopted to limit the rotating speed of the rotating shaft, so that the rotating speed of the overturning seat is moderate.

Further, the locking mechanism comprises an electromagnet assembly and a locking plate; the electromagnet assembly comprises a coil outer frame, a sliding rod and a spring; the coil outer frame is fixed in the shell and corresponds to the lower part of the overturning seat; the sliding rod is positioned in the coil outer frame, slides backwards under the action of magnetic force after the coil in the coil outer frame is electrified, and the front end of the sliding rod extends out of the coil outer frame;

the locking plate is fixed at the bottom of the turnover seat and extends downwards to the front side of the sliding rod, a locking hole is formed in the position, corresponding to the sliding rod, of the locking plate, and the front end of the sliding rod is inserted into the locking hole so as to lock the position of the turnover seat after the adapter is pushed into the shell; the spring is sleeved at the front end of the sliding rod, and two ends of the spring respectively abut against the coil outer frame and the step on the front end of the sliding rod, so that the sliding rod slides forwards to reset after the coil outer frame is powered off.

The beneficial effect of adopting the further scheme is that: the position of the turnover seat is locked or the position of the turnover seat in the shell is unlocked by the front and back extension of the sliding rod.

Further, the locking hole on the locking plate is located outside the housing.

The beneficial effect of adopting the further scheme is that: under the condition of abnormal power supply, the vacuum blood collection tube is taken out by manually unlocking the position of the turnover seat.

Further, the stroke boosting mechanism comprises a stroke switch and a push rod; the travel switch is fixed on one side of the shell, which is far away from the opening, and corresponds to the position of the upper end of the adapter, and the push rod is horizontally and slidably arranged on the shell, which corresponds to the position between the travel switch and the upper end of the adapter; one end of a transmission lever of the travel switch is connected with a contact spring of the travel switch, the other end of the transmission lever extends obliquely downwards and then is connected with a roller assembly which is in contact with the end part of the push rod, and then the spring of the travel switch exerts thrust towards the opening on the adapter through the lever and the push rod when the position of the turnover seat is unlocked.

The beneficial effect of adopting the further scheme is that: the position of the adapter is identified through the travel switch to indicate the blood cell analyzer to perform the next sampling action, and the spring of the travel switch pushes the adapter when the vacuum blood collection tube is to be taken out, so that additional overturning force is provided for the adapter when the position of the overturning seat is unlocked.

Furthermore, a mounting plate is fixed on one side of the shell, which is far away from the opening, and corresponds to the position of the upper end of the adapter, and the travel switch is mounted on the mounting plate.

Furthermore, a limiting rod is arranged on the shell corresponding to the position below the balancing weight, and the limiting rod is horizontally arranged and contacts and blocks the balancing weight to continue rotating after the balancing weight rotates for a preset angle.

The beneficial effect of adopting the further scheme is that: the rotation of the turnover seat is limited by a preset angle, so that the vacuum blood collection tube can be conveniently taken and placed after the turnover seat is rotated out.

Further, the shell is of a frame structure with an opening on the side part, the frame structure is composed of a side plate, a front plate, a rear plate, a top plate and a bottom plate, the front plate and the rear plate are arranged in a front-back opposite mode, and the side plate is fixed on one side between the front plate and the rear plate; the top plate is fixed on the top between the front plate and the rear plate, and is provided with the sampling port for a needle head to puncture the vacuum blood sampling tube for sampling; the bottom plate is fixed at the bottom between the front plate and the rear plate.

Drawings

FIG. 1 is a block diagram of the present invention with an adapter in the housing;

FIG. 2 is a block diagram of the present invention with the adapter removed from the housing;

FIG. 3 is a block diagram of another view of FIG. 2;

FIG. 4 is a view showing the front plate and the like of FIG. 3 with parts removed;

FIG. 5 is a partial view of a lock plate;

FIG. 6 is a side view structural diagram of FIG. 5;

FIG. 7 is a partial structural view of a travel switch or the like;

FIG. 8 is a structural diagram of the present invention when a gear-type damper is used to limit the rotation speed of the rotating shaft;

fig. 9 is a structural view of fig. 8 with parts such as a front plate removed.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the device comprises a turnover seat, 2, an adapter, 3, a vacuum blood collection tube, 4, a sampling port, 5, an opening, 6, a balancing weight, 7, a bearing, 8, a rotating shaft, 9, a damper mounting seat, 10, a roller damper, 11, a gear, 12, a gear type damper, 13, a coil outer frame, 14, a sliding rod, 15, a spring, 16, a locking hole, 17, a travel switch, 18, a push rod, 19, a transmission lever, 20, a mounting plate, 21, a limiting rod, 22, a side plate, 23, a front plate, 24, a side plate, 25, a top plate, 26, a locking plate, 27, a bottom plate, 28, a guide pillar, 29 and a guide hole.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

Example one

As shown in fig. 1-3, a closed single sample introduction device of a blood cell analyzer comprises a shell, a turning seat 1, an adapter 2, a locking mechanism and a stroke boosting mechanism. The shell is a frame structure with a side opening 5 formed by a side plate 22, a front plate 23, a rear plate 24, a top plate 25 and a bottom plate 27, wherein the front plate 23 and the rear plate 24 are arranged in a front-back opposite mode, and the side plate 22 is fixed on one side between the front plate 23 and the rear plate 24. The top plate 25 is fixed on the top between the front plate 23 and the back plate 24, and is provided with the sampling port 4 for the needle to penetrate into the vacuum blood collection tube 3 for sampling. The bottom plate 27 is fixed to the bottom between the front plate 23 and the rear plate 24. The turnover seat 1 is rotatably arranged in the shell and comprises the following components: as shown in fig. 4, bearings 7 are respectively disposed at positions of the housing corresponding to front and rear sides of the flipping base 1, a rotating shaft 8 is fixed on the flipping base 1, and front and rear ends of the rotating shaft 8 are respectively connected to and penetrate through the corresponding bearings 7. The front side of the shell is provided with a damper mounting seat 9 at a position corresponding to the front end of the rotating shaft 8, and the damper mounting seat 9 is provided with a roller damper 10 which is connected with the front end of the rotating shaft 8 and limits the rotating speed of the rotating shaft 8. The adapter 2 is fixed on the turnover seat 1, and a vacuum blood collection tube 3 is arranged in the adapter. The top of casing is equipped with and supplies the syringe needle to puncture to sample connection 4 of sampling in the vacuum test tube 3, its lateral part is equipped with through upset seat 1 rotates and makes adapter 2 deviate from in the casing or will adapter 2 pushes opening 5 in the casing. And a balancing weight 6 for driving the overturning seat 1 to rotate is arranged on one side of the bottom of the overturning seat 1, which is close to the opening 5. Locking mechanism is in the casing and correspond the below of upset seat 1, and adapter 2 pushes into behind the casing will the position locking of upset seat 1 is in order to wait to take a sample or will upset seat 1 is in position unblock in the casing is in order to change vacuum test tube 3. The stroke boosting mechanism is positioned on one side, far away from the opening 5, of the shell and is used for sensing the position of the adapter 2 in the shell and applying a pushing force to the adapter 2 towards the opening 5 when the position of the overturning seat 1 is unlocked. A limiting rod 21 is arranged on the shell corresponding to the position below the balancing weight 6, and the limiting rod 21 is horizontally arranged and contacts and blocks the balancing weight 6 to continue rotating after the balancing weight 6 rotates by a preset angle.

As shown in fig. 5 and 6, the locking mechanism includes an electromagnet assembly and a locking plate 26. The electromagnet assembly comprises a coil outer frame 13, a sliding rod 14 and a spring 15. The coil outer frame 13 is fixed in the housing and corresponds to the lower part of the turnover seat 1, the slide rod 14 is positioned in the coil outer frame 13, after the coil in the coil outer frame 13 is electrified, the slide rod slides backwards under the action of magnetic force, and the front end of the slide rod extends out of the coil outer frame 13 (an electromagnet assembly is a product disclosed in the prior art by https:// haokan.baidu.com/vvid 15678195679080719270& pd & bjh & fr & bjhauthor & type). The locking plate 26 is fixed at the bottom of the roll-over seat 1 and extends downwards to the front side of the slide bar 14, a locking hole 16 is arranged on the locking plate 26 at a position corresponding to the slide bar 14, and the front end of the slide bar 14 is inserted into the locking hole 16 to lock the position of the roll-over seat 1 after the adapter 2 is pushed into the shell. The spring 15 is sleeved at the front end of the sliding rod 14, and two ends of the spring 15 respectively abut against the coil outer frame 13 and the steps on the front end of the sliding rod 14, so that the sliding rod 14 slides forwards to reset after the coil in the coil outer frame 13 is powered off. The locking plate 26 is exposed to the outside of the housing to be manually pressed to the front end of the slide bar 14, thereby manually unlocking the position of the roll-over stand 1 in the housing.

As shown in fig. 7, the stroke assist mechanism includes a stroke switch 17 and a push rod 18. Travel switch 17 is fixed the position that is kept away from on the casing one side of opening 5 and corresponding adapter 2 upper end specifically as follows: a mounting plate 20 is fixed on one side of the shell far away from the opening 5 and corresponding to the position of the upper end of the adapter 2, and the travel switch 17 is mounted on the mounting plate 20. The push rod 18 is horizontally and slidably disposed on the housing at a position corresponding to between the travel switch 17 and the upper end of the adapter 2. One end of a transmission lever 19 of the travel switch 17 is connected with a contact of the travel switch 17, the other end of the transmission lever extends obliquely downwards and then is connected with a roller assembly which is in contact with the end part of the push rod 18, and then a spring of the travel switch 17 exerts a thrust force towards the opening 5 on the adapter 2 through the lever and the push rod 18 when the position of the turnover seat 1 is unlocked.

The working process of the device is explained in a complete way as follows:

first, the coil in the coil housing 13 is energized through the corresponding switch, and the magnetic attraction sliding rod 14 slides backward when the coil in the coil housing 13 is energized. After the slide bar 14 is slid backward, its front end, which was inserted into the locking hole 16, is withdrawn backward from the locking hole 16, thereby unlocking the position of the roll-over stand 1. Meanwhile, the originally compressed spring of the travel switch 17 is stretched to form a thrust to the adapter 2 sequentially through the transmission lever 19 and the push rod 18, the overturning seat 1 rotates towards the opening 5 under the action of the thrust and the counterweight 6 until the overturning seat 1 touches the limiting rod 21 and stops rotating (after the coil in the coil outer frame 13 is electrified for a short time, the power is off, and the slide rod 14 pops out and is blocked by the locking plate 26). At this time, the roll-over stand 1 is rotated out of the housing with the adapter 2 through the opening 5, and the drum damper 10 ensures smooth and slow rotation of the roll-over stand 1 during the above-mentioned rotation. After the adapter 2 is rotated out of the shell, the corresponding vacuum blood collection tube 3 is inserted into the adapter 2, then the adapter 2 is manually pushed into the shell again through the opening 5, when the adapter 2 is pushed into the shell to be in place, the sliding rod 14 is inserted into the locking hole 16 again and locks the position of the turnover seat 1, meanwhile, the adapter 2 sequentially passes through the push rod 18 and the transmission lever 19 to press the contact of the travel switch 19, the travel switch 19 senses that the adapter 2 is in place, and sends a signal to the hematology analyzer to prepare for the next sampling action. By this, one duty cycle ends. When the adapter 2/the vacuum blood collection tube 3 needs to be taken out when the power supply is not normally supplied, the front end of the sliding rod 14 is manually pressed, the rear end is retreated out of the locking hole 16, and the position of the turnover seat 1 is unlocked.

Example two

This embodiment limits the speed of the shaft 8 by different damping means: as shown in fig. 8 and 9, a gear 11 is fixedly sleeved at the front end of the rotating shaft 8, and a gear-type damper 12 corresponding to the gear 11 and providing bidirectional damping to the gear 11 is disposed at the front side of the housing. The gear type damper 12 forms a certain damping for the rotation of the gear 11, so as to form a damping for the rotation of the rotating shaft 8, and finally the rotating speed of the rotating shaft 8 is limited within a preset range.

In addition, in this embodiment, the side plate 22, the front plate 23, and the rear plate 24 may be integrally formed machined or sheet metal parts, and the travel switch 17 is directly pressed on the adapter 2 through the transmission lever 19, i.e., the push rod 18 is omitted, and it may also sense that the adapter 2 is in place when closed, and provide an initial pushing force to the test tube adapter 2 when the adapter 2 is opened. Since the side plate 22, the front plate 23 and the rear plate 24 can be integrally formed, the locking plate 26 cannot be exposed, and therefore a guide post 28 is provided at a corresponding position. The guide post 28 is provided with a guide hole 29 leading to the locking hole 16, and when the roll-over stand 1 is unlocked manually, the guide hole 29 is inserted with the help of a wire or other slender members, and the like, and the front end of the slide bar 14 is pushed back out of the locking hole 16, so that unlocking can be completed.

The rest of this embodiment other than the above corresponds to the embodiment.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A closed single sample introduction device of a blood cell analyzer is characterized by comprising a shell, a turnover seat (1), an adapter (2), a locking mechanism and a stroke boosting mechanism; the turnover seat (1) is rotatably arranged in the shell, the adapter (2) is fixed on the turnover seat (1), and the interior of the adapter is matched with the vacuum blood collection tube (3); the top of the shell is provided with a sampling port (4) for a needle to puncture into the vacuum blood collection tube (3) for sampling, and the side part of the shell is provided with an opening (5) which enables the adapter (2) to be taken out of the shell or pushes the adapter (2) into the shell through the rotation of the turnover seat (1); a counterweight block (6) for driving the overturning seat (1) to rotate is arranged on one side of the bottom of the overturning seat (1) close to the opening (5); the locking mechanism is positioned in the shell and corresponds to the lower part of the turnover seat (1), and locks or unlocks the position of the turnover seat (1); the stroke boosting mechanism is arranged on one side, far away from the opening (5), of the shell and used for sensing the position of the adapter (2) in the shell and applying a pushing force towards the opening (5) to the adapter (2) when the position of the overturning seat (1) is unlocked.

2. The closed single sample introduction device of the hematology analyzer according to claim 1, wherein bearings (7) are respectively disposed at positions of the housing corresponding to the front and rear sides of the flip seat (1), a rotating shaft (8) is fixed on the flip seat (1), and the front and rear ends of the rotating shaft (8) are respectively connected to and penetrate through the corresponding bearings (7).

3. The closed single sample introduction device of the hematology analyzer according to claim 2, wherein a damper mounting seat (9) is disposed at a position corresponding to the front end of the rotating shaft (8) on the front side of the housing, and a roller damper (10) connected to the front end of the rotating shaft (8) and limiting the rotating speed of the rotating shaft (8) is disposed on the damper mounting seat (9).

4. The closed single sample introduction device of the hematology analyzer according to claim 2, wherein a gear (11) is fixedly sleeved at the front end of the rotating shaft (8), and a gear type damper (12) which corresponds to the gear (11) and provides bidirectional damping for the gear (11) is arranged at the front side of the housing.

5. The closed single sample introduction device of the hematology analyzer according to claim 1, wherein the locking mechanism comprises an electromagnet assembly and a locking plate (26); the electromagnet assembly comprises a coil outer frame (13), a sliding rod (14) and a spring (15); the coil outer frame (13) is fixed in the shell and corresponds to the lower part of the overturning seat (1); the sliding rod (14) is positioned in the coil outer frame (13), slides backwards under the action of magnetic force after the coil in the coil outer frame (13) is electrified, and the front end of the sliding rod extends out of the coil outer frame (13);

the locking plate (26) is fixed at the bottom of the turnover seat (1) and extends downwards to the front side of the sliding rod (14), a locking hole (16) is formed in the position, corresponding to the sliding rod (14), of the locking plate (26), and the front end of the sliding rod (14) is inserted into the locking hole (16) so as to lock the position of the turnover seat (1) after the adapter (2) is pushed into the shell; the spring (15) is sleeved at the front end of the sliding rod (14), two ends of the spring (15) respectively abut against the coil outer frame (13) and a step on the front end of the sliding rod (14), and the sliding rod (14) is enabled to slide forwards to reset after a coil in the coil outer frame (13) is powered off.

6. The closed single sample introduction device of the hematology analyzer according to claim 5, wherein the locking hole (16) on the locking plate (26) is located outside the housing.

7. The closed single sample introduction device of the hematology analyzer according to claim 1, wherein the stroke boosting mechanism comprises a stroke switch (17) and a push rod (18); the travel switch (17) is fixed on one side of the shell far away from the opening (5) and corresponds to the position of the upper end of the adapter (2), and the push rod (18) is horizontally and slidably arranged on the shell and corresponds to the position between the travel switch (17) and the upper end of the adapter (2); one end of a transmission lever (19) of the travel switch (17) is connected with a contact spring of the travel switch (17), and the other end of the transmission lever extends obliquely downwards and then is connected with a roller assembly which is contacted with the end part of the push rod (18).

8. The closed single sample introduction device of the hematology analyzer according to claim 7, wherein a mounting plate (20) is fixed on the housing at a position corresponding to the upper end of the adapter (2) and away from the opening (5), and the travel switch (17) is mounted on the mounting plate (20).

9. The closed single sample introduction device of the hematology analyzer according to claim 1, wherein a position on the housing corresponding to a position below the weight block (6) is provided with a limiting rod (21), and the limiting rod (21) is horizontally arranged and contacts and blocks the weight block (6) from continuing to rotate after the weight block (6) rotates by a preset angle.

10. The closed single sample introduction device of the hematology analyzer according to any one of claims 1 to 9, wherein the housing is a frame structure with a side opening (5) formed by a side plate (22), a front plate (23), a rear plate (24), a top plate (25) and a bottom plate (27), the front plate (23) and the rear plate (24) are arranged in a front-back opposite manner, and the side plate (22) is fixed at one side between the front plate (23) and the rear plate (24); the top plate (25) is fixed at the top between the front plate (23) and the rear plate (24), and is provided with the sampling port (4) for a needle to puncture into the vacuum blood collection tube (3) for sampling; the bottom plate (27) is fixed to the bottom between the front plate (23) and the rear plate (24).