CN111346402A - Anti-interference suction system - Google Patents

Abstract

The invention provides an anti-interference suction system, which relates to the field of medical equipment. It includes a guide rail, a lift seat slides along the guide rail, a suction pump sliding along the lift seat is arranged on the lift seat, and an inlet pipe is arranged on the suction pump There is also a suction pipe supply device under the guide rail, which is used to continuously supply the suction pipe and connect the suction pipe with the inlet pipe within the stroke range of the suction pump; there is also a suction pipe device for separating the suction pipe from the inlet pipe. By setting a liftable suction pump and a replaceable suction pipe, the mutual interference of the liquid in the test tube can be avoided in the process of automatically suctioning the liquid. And the operation is convenient and reliable. In a preferred solution, the depth of suction can be easily controlled, and the amount of each suction can also be controlled more accurately through automatic control, which is suitable for quantitatively suctioning the liquid in the middle layer or the bottom layer.

Description

Anti-interference suction system

technical field

The invention relates to the field of medical equipment, in particular to an anti-interference suction system.

Background technique

For patients undergoing artificial insemination or in vitro fertilization and embryo transfer technology, the spouse's semen needs to be washed and optimized to remove impurities such as seminal plasma, immobile sperm, and white blood cells, and to extract sperm with good motility and high quality for fertilization.

Defects in the prior art: at present, no matter which method is adopted to carry out semen washing optimization, it is all manual operation, and the manual operation has the following limitations:

1. Repeating the same operation, the workload is large, the time is long, and the efficiency is low. For example, a center washes about 30 people every day to optimize the semen. It needs at least 2 people to repeat the same operation process every day, and it takes at least one whole morning to complete.

2. Errors are prone to occur during repeated operations, such as misunderstanding of patient names and semen. In order to prevent the above mistakes in clinical practice, double check is adopted, that is, there is always a person next to check the name in the process of washing the semen. Especially in the process of extracting the supernatant, extracting the supernatant from different test tubes on the centrifuge may easily cause the liquids to interfere with each other.

In addition to the field of artificial insemination, in other experiments, operations that require supernatant extraction from centrifuges or other equipment also have problems of mutual interference and even contamination.

SUMMARY OF THE INVENTION

The technical problem to be solved by the present invention is to provide an anti-interference suction system, which can ensure that the suction tubes involved in the operation are disposable and will not contaminate each other during each liquid extraction process. In a preferred solution, disposable straws can also be continuously supplied. Ability to easily control the depth of liquid per suction.

In order to solve the above-mentioned technical problems, the technical solution adopted in the present invention is: an anti-interference suction system, comprising a guide rail, a lifting seat slides along the guide rail, and a suction pump sliding along the lifting seat is arranged on the lifting seat to suck There is an inlet pipe on the pump;

There is also a suction pipe supply device under the guide rail, which is used to continuously supply the suction pipe and connect the suction pipe with the inlet pipe within the stroke range of the suction pump;

There is also a suction tube device for disengaging the suction tube from the inlet tube.

In a preferred solution, a rack and pinion mechanism or a belt mechanism is arranged between the lifting seat and the guide rail, and the lifting seat is driven to slide by the driving mechanism through the rack and pinion mechanism or the belt mechanism.

In a preferred solution, a synchronous belt is fixed on the guide rail, and a traveling driving wheel driven and rotated by a driving device is arranged on the lifting seat, and the traveling driving wheel is engaged with the synchronous belt to drive the lifting seat to slide.

In a preferred solution, the lifting seat is provided with a cylinder, a lifting belt mechanism or a lifting rack and pinion mechanism, and the suction pump is driven up and down by the cylinder, the lifting belt mechanism or the lifting rack and pinion mechanism.

In a preferred solution, the lifting seat is provided with a rotatable screw rod, the end of the screw rod is connected with the lifting motor fixed on the lifting seat, the suction pump is provided with a nut, and the nut is threadedly connected with the screw rod ;

The inlet pipe is fixedly connected with the suction pump, and the end of the inlet pipe is tapered or circular;

The inlet pipe communicates with the inlet of the suction pump.

In a preferred solution, the suction pump is a diaphragm pump, a peristaltic pump or a water ring vacuum pump.

In a preferred solution, the structure of the straw supply device is that the straw track includes side walls and a bottom wall on both sides, a plurality of straws are located between the side walls on both sides in contact with each other, and one end of the straw is in contact with the bottom wall, The other end of the straw points in the direction of the inlet tube, and the straw at the end of the straw track is aligned with the inlet tube.

In a preferred solution, a friction wheel is provided on one side of the straw track, so that the straws are closely arranged;

The straw track is provided with a curved section, and the friction wheel is located at the position of the curved section.

In a preferred solution, the structure of the suction pipe device is as follows: an openable clamping claw is arranged on the base body, a spring for keeping the clamping claw closed is arranged between the clamping claws, and a clamping claw is arranged between the clamping claw. The end is provided with a tapered port, the tapered port is aligned with a certain stroke position of the inlet pipe, the diameter of the end of the tapered port close to the inlet pipe is larger, the diameter of the end away from the inlet pipe is smaller, and the diameter of the end away from the inlet pipe is slightly smaller The diameter of the straw so that when the inlet tube is inserted into the conical opening, the end of the straw is blocked when it exits.

In a preferred solution, an electromagnet is further provided between the clamping claws.

The invention provides an anti-interference suction system, which can avoid mutual interference of the liquid in the test tube during the process of automatically suctioning the liquid by being provided with a liftable suction pump and a replaceable suction pipe. And the operation is convenient and reliable. In a preferred solution, the suction depth can be easily controlled, and the amount of each suction can be controlled more precisely through automatic control, which is suitable for quantitative suction of the liquid in the middle layer or the bottom layer.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

FIG. 1 is a schematic front view of the overall structure of the present invention.

FIG. 2 is a schematic top view of the structure of the present invention.

FIG. 3 is a schematic structural diagram of the travel driving device of the lift seat of the present invention.

FIG. 4 is a schematic structural diagram of the precise liquid supply device in the present invention.

FIG. 5 is a schematic diagram of the lift driving structure of the suction pump in the present invention.

FIG. 6 is a schematic diagram of another lift driving structure of the suction pump in the present invention.

FIG. 7 is a schematic top view of the structure of the device for taking a pipette according to the present invention.

In the figure: suction device 1, lift motor 101, lift seat 102, guide rail 103, screw rod 104, suction pump 105, inlet pipe 106, timing belt 107, travel drive wheel 108, lift rack and pinion mechanism 109, lift cylinder 110, precise liquid supply device 2, syringe 201, liquid supply tube 202, base 203, tube positioning block 204, piston positioning nut slider 205, liquid supply screw 206, liquid supply motor 207, suction tube 3, suction tube track 4, take Pipette device 5 , clamping claw 51 , spring 52 , conical mouth 53 , electromagnet 54 , seat 55 , liquid collection bag 6 , friction wheel 7 , centrifugal device 8 , loading and unloading manipulator 9 , test tube 10 .

Detailed ways

Example 1:

As shown in Figures 1 and 2, an anti-interference suction system includes a guide rail 103, preferably a horizontally arranged guide rail, but in some special scenarios, it can also be an inclined guide rail, and the lift seat 102 slides along the guide rail 103, The seat 102 is provided with a suction pump 105 sliding along the lift seat 102, and the suction pump 105 is provided with an inlet pipe 106;

A suction pipe supply device is also provided below the guide rail 103 for continuously supplying the suction pipe 3 and connecting the suction pipe 3 with the inlet pipe 106 within the stroke range of the suction pump 105;

There is also a suction pipe device 7 for disengaging the suction pipe 5 from the inlet pipe 106 . With this structure, every time suction is required, the suction pump 105 can be lowered so that the inlet pipe 106 is sleeved with the suction pipe 3, then raised, moved to the top of the test tube 10 of the centrifugal device 8, and then lowered to a preset height , start the suction pump 105 to suck the liquid, after the suction is completed, lift the suction pump 105 , then move it to the top of the suction pipe device 5 , and then remove the suction pipe 5 . With this cycle, it can be ensured that the suction operations between the various suction tubes do not interfere with each other. Moreover, the suction pump 105 in the present invention is located on the lifting seat 102, and the inlet of the suction pump 105 is relatively close to the liquid in the suction pipe 3. After calibration, the amount of each suction can be accurately controlled, which is convenient for extracting the middle layer of the test tube or the test tube. underlying liquid. For example, in some density gradient centrifugation methods, it is necessary to extract a certain level of liquid in the middle.

In a preferred solution, a rack and pinion mechanism or a belt mechanism is provided between the lifting base 102 and the guide rail 103 , and the lifting base 102 is driven to slide by the driving mechanism through the rack and pinion mechanism or the belt mechanism.

A preferred solution is shown in FIG. 3 , a synchronous belt 107 is fixed on the guide rail 103 , and a traveling driving wheel 108 driven and rotated by a driving device is provided on the lifting base 102 . The traveling driving wheel 108 is meshed with the synchronous belt 107 to The lift seat 102 is driven to slide. With this structure, the lift base 102 is driven to slide along the guide rail 103 by the rotation of the traveling drive wheel 108 .

In a preferred solution, as shown in FIGS. 5 and 6 , the lifting seat 102 is provided with a cylinder 110 , a lifting belt mechanism 109 or a lifting rack and pinion mechanism 109 , and is driven by the cylinder 110 , the lifting belt mechanism 109 or the lifting rack and pinion mechanism 109 The suction pump 105 is raised and lowered. The solution of the air cylinder 110 is suitable for occasions that require high speed but not high positioning accuracy.

A preferred solution is as shown in FIG. 1 , a rotatable screw rod 104 is provided on the lift seat 102 , the end of the screw rod 104 is connected to the lift motor 101 fixed on the lift seat 102 , and the suction pump 105 is provided with There is a nut, and the nut is threadedly connected with the screw rod 104; with this structure, the lifting movement of the suction pump 105 can obtain higher displacement accuracy. Moreover, it can realize self-locking, which is suitable for occasions that require high precision and low operating speed.

The inlet pipe 106 is fixedly connected with the suction pump 105, and the end of the inlet pipe 106 is tapered or circular;

The inlet pipe 106 communicates with the inlet of the suction pump 105 .

In a preferred solution, the suction pump 105 is a diaphragm pump, a peristaltic pump or a water ring vacuum pump. The pumping volume of diaphragm pumps and peristaltic pumps is easy to control. By calibrating the volume of the suction pipe and the inlet pipe 106 and corresponding to the number of revolutions of the diaphragm pump or peristaltic pump, the amount of liquid pumped each time can be precisely controlled.

The preferred solution is shown in Figures 1 and 2. The structure of the straw supply device is as follows: the straw track 4 includes side walls and bottom walls on both sides, and a plurality of straws 3 are located between the side walls on both sides in contact with each other. One end of the suction pipe 3 is in contact with the bottom wall, the other end of the suction pipe 3 points to the direction of the inlet pipe 106 , and the suction pipe 3 at the end of the suction pipe track 4 is aligned with the inlet pipe 106 . So that when the inlet pipe 106 descends, the suction pipe 3 can be accurately sheathed on the inlet pipe 106 .

In a preferred solution, as shown in FIG. 2 , a friction wheel 7 is provided on one side of the straw track 4 so that the straws are closely arranged; the friction wheel 7 is preferably made of rubber.

Further preferably, as shown in FIG. 2 , the straw track 4 is provided with a curved section, and the friction wheel 7 is located at the position of the curved section. Further preferably, the suction tube track 4 also has a certain inclination angle, so that the suction tubes in the suction tube track 4 are in close contact with each other.

A preferred solution is shown in FIG. 7 , the structure of the pipette device 5 is as follows: the base body 55 is provided with openable clamping claws 51 , and between the clamping claws 51 are provided to keep the clamping claws 51 closed The spring 52 is provided with a tapered port 53 at the end of the clamping jaw 51. The tapered port 53 is aligned with a certain stroke position of the inlet pipe 106. The diameter of the end of the tapered port 53 close to the inlet pipe 106 is larger and away from the inlet pipe. The diameter of one end of 106 is smaller, and the diameter of the end away from the inlet pipe 106 is slightly smaller than the diameter of the suction pipe 3, so that when the inlet pipe 106 is inserted into the conical opening 53, the conical opening 53 will remove the end of the suction pipe 3 when it exits. block. With this structure, the suction pipe 3 on the inlet pipe 106 can be removed without providing additional power.

In a preferred solution, an electromagnet 54 is further provided between the clamping claws 51 . The provided electromagnet 54 can control the active opening and closing of the clamping claw 51 .

Example 2:

Taking the optimal solution as an example, when in use as shown in Figure 2, the loading and unloading manipulator 9 puts the test tubes 10 containing the raw materials into the corresponding workstations of the centrifuge device 8, and each time a test tube 10 is loaded, the centrifuge device 8 rotates. 90°, wait for the next test tube 10 to be loaded, when the test tube 10 passes under the precise liquid supply device 2, as shown in Figure 4, the liquid supply motor 207 operates, so that the liquid supply screw 206 rotates on the base 203, and drives the piston to position The nut slider 205 moves to the left side of FIG. 4. Since the piston positioning nut slider 205 is fixedly connected with the piston rod of the syringe 201, the corresponding piston of the syringe 201 moves to the left side of FIG. The liquid in the syringe 201 of 203 is injected quantitatively into the test tube 10 through the liquid supply pipe 202 . When all the liquid injection and proportioning are completed, the centrifuge device 8 starts centrifugation. At the same time, the lift seat 102 is moved over the end of the straw track 4 of the straw supply device, aligned with one of the straws 3, the lift seat 102 is lowered to allow the inlet tube 106 to be inserted into the suction tube 3, or conversely, the suction tube 3 is inserted into the inlet tube 106 and is fixed by friction. The lifting seat 102 is raised, and the suction pipe 3 leaves the suction pipe track 4 along with the lifting seat. The lift seat 102 is moved above the test tube 10 . After the centrifugal device 8 is stopped, the lifting seat 102 is lowered, so that the suction pipe 3 enters the test tube 10, and the suction pump 105 is activated, so that the liquid in the test tube 10 is quantitatively extracted, and the extracted liquid is discharged to the liquid collection bag 6 through the flexible pipeline. Inside. After the extraction is completed, the lifting seat 102 is lifted up and moved to the top of the suction pipe device 5, the lifting seat 102 is lowered, and the suction pipe 3 is passed through the conical opening 53 of the suction pipe device 5, the lifting seat 102 is lifted, and the suction pipe 3 is taken by the suction pipe device 5. The conical opening 53 of the slack is blocked, and the suction pipe 3 is separated from the inlet pipe 106. When adopting the scheme of inserting the suction pipe 3 into the inlet pipe 106, the suction pipe device 5 adopts the clamping claw 51 with the electromagnet 54 to clamp and fix the suction pipe 3 so as to separate the suction pipe 3 from the inlet pipe 106, and release the clamp after disengagement. Holding the claw 51, the used straws 3 fall down, and they are collected and disposed of in a unified manner. The lifting base 102 is moved to the top of the straw track 4, and another new straw 3 is connected, and the above steps are repeated, so that the suction in each test tube 10 will not contaminate each other.

The above-mentioned embodiments are only the preferred technical solutions of the present invention, and should not be regarded as limitations of the present invention. The embodiments and features in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall take the technical solutions described in the claims, including the equivalent alternatives of the technical features in the technical solutions described in the claims, as the protection scope. That is, equivalent replacements and improvements within this scope are also within the protection scope of the present invention.

Claims (10)

1. An anti-interference suction system comprising a guide rail (103), along which a lifting base (102) slides (103), characterized in that: a suction pump (105) sliding along the lifting seat (102) is arranged on the lifting seat (102), and an inlet pipe (106) is arranged on the suction pump (105);

a suction pipe supply device is arranged below the guide rail (103) and is used for continuously supplying suction pipes (3) and connecting the suction pipes (3) with the inlet pipe (106) in the stroke range of the suction pump (105);

a straw-taking device (7) is also provided for detaching the straw (5) from the inlet tube (106).

2. A mutually interference-preventing aspiration system according to claim 1, further comprising: a gear rack mechanism or a belt mechanism is arranged between the lifting seat (102) and the guide rail (103), and the lifting seat (102) is driven to slide by a driving mechanism through the gear rack mechanism or the belt mechanism.

3. A mutually interference-preventing aspiration system according to claim 1, further comprising: the lifting device is characterized in that a synchronous belt (107) is fixedly arranged on the guide rail (103), a walking driving wheel (108) driven by a driving device to rotate is arranged on the lifting seat (102), and the walking driving wheel (108) is meshed and connected with the synchronous belt (107) to drive the lifting seat (102) to slide.

4. A mutually interference-preventing aspiration system according to claim 1, further comprising: the lifting seat (102) is provided with an air cylinder (110), a lifting belt mechanism (109) or a lifting gear and rack mechanism (109), and the air cylinder (110), the lifting belt mechanism (109) or the lifting gear and rack mechanism (109) drives the suction pump (105) to lift.

5. A mutually interference-preventing aspiration system according to claim 1, further comprising: a rotatable screw rod (104) is arranged on the lifting seat (102), the end of the screw rod (104) is connected with a lifting motor (101) fixedly arranged on the lifting seat (102), a nut is arranged on the suction pump (105), and the nut is in threaded connection with the screw rod (104);

the inlet pipe (106) is fixedly connected with the suction pump (105), and the end of the inlet pipe (106) is conical or circular;

the inlet pipe (106) communicates with the inlet of the suction pump (105).

6. A mutually interference-preventing aspiration system according to claim 1, further comprising: the suction pump (105) is a diaphragm pump, a peristaltic pump or a water ring vacuum pump.

7. A mutually interference-preventing aspiration system according to claim 1, further comprising: the structure of the straw supply device is that the straw track (4) comprises side walls and a bottom wall on two sides, a plurality of straws (3) are contacted with each other and are positioned between the side walls on the two sides, one end of each straw (3) is contacted with the bottom wall, the other end of each straw (3) points to the direction of the inlet pipe (106), and the straws (3) positioned at the tail end of the straw track (4) are aligned with the inlet pipe (106).

8. The anti-interference pumping system of claim 7, further comprising: a friction wheel (7) is arranged on one side of the straw track (4) to ensure that the straws are tightly arranged;

the straw track (4) is provided with a bending section, and the friction wheel (7) is positioned at the position of the bending section.

9. A mutually interference-preventing aspiration system according to claim 1, further comprising: the structure of the straw taking device (5) is as follows: be equipped with clamping jaw (51) that can open and shut on pedestal (55), be equipped with between clamping jaw (51) and make clamping jaw (51) keep closed spring (52), be equipped with cone (53) at the end of clamping jaw (51), certain stroke position alignment of cone (53) and inlet pipe (106), cone (53) are close to inlet pipe (106) one end diameter great, the one end diameter of keeping away from inlet pipe (106) is less, the diameter of the one end of keeping away from inlet pipe (106) slightly is lighter than the diameter of straw (3), so that insert in cone (53) inlet pipe (106), then block the end of straw (3) when withdrawing.

10. A tamper-proof pumping system as claimed in claim 9, wherein: an electromagnet (54) is also arranged between the clamping claws (51).

Images