CN111346402A

CN111346402A - Mutual interference prevention suction system

Info

Publication number: CN111346402A
Application number: CN202010164666.6A
Authority: CN
Inventors: 李莉; 黄东健; 曾成力; 柯莉
Original assignee: Third Affiliated Hospital of Guangzhou Medical University
Current assignee: Third Affiliated Hospital of Guangzhou Medical University
Priority date: 2020-03-11
Filing date: 2020-03-11
Publication date: 2020-06-30
Anticipated expiration: 2040-03-11
Also published as: CN111346402B

Abstract

The invention provides a mutual interference prevention suction system, which relates to the field of medical equipment and comprises a guide rail, wherein a lifting seat slides along the guide rail, a suction pump sliding along the lifting seat is arranged on the lifting seat, and an inlet pipe is arranged on the suction pump; a suction pipe supply device is arranged below the guide rail and is used for continuously supplying suction pipes and connecting the suction pipes with the inlet pipe within the stroke range of the suction pump; a straw taking device is also arranged for separating the straw from the inlet pipe. Through the suction pump and the removable straw of the liftable that set up, can avoid the mutual interference of the liquid in the test tube at the in-process of automatic suction liquid. And the operation action is convenient and reliable. In the preferred scheme, the suction depth can be conveniently controlled, the suction amount at each time can be accurately controlled through automatic control, and the liquid quantitative suction device is suitable for quantitatively sucking liquid in the middle layer or the bottom layer.

Description

Mutual interference prevention suction system

Technical Field

The invention relates to the field of medical equipment, in particular to a mutual interference prevention suction system.

Background

For a patient receiving artificial insemination or in vitro fertilization and embryo transplantation technology, the sperm of a spouse needs to be washed and optimized to remove impurities such as seminal plasma, inactive sperm, leucocyte and the like, and the sperm with good activity and high quality is extracted for fertilization.

The defects of the prior art are as follows: at present, no matter which method is adopted for carrying out semen washing optimization, the semen washing optimization is carried out manually, and the manual operation has the following limitations:

1. the same operation is repeated, the workload is large, the time is long, and the efficiency is low. For example, a certain center washes optimized semen for about 30 people per day, and requires at least 2 people to repeat the same operation procedure every day, and also takes at least one whole morning to finish.

2. Mistakes are easily made during repeated operations, such as accidents involving the name of the patient and the semen being mistaken. At present, the checking is carried out by two persons clinically for preventing the errors, namely, one person always checks the name beside the semen in the process of washing the semen, so that the error probability is also generated, a large amount of manpower and time are wasted, and the efficiency is low. Especially, in the process of extracting the supernatant, the supernatant is extracted from different test tubes on the centrifuge, which easily causes the liquids to interfere with each other.

In addition to the field of artificial insemination, operations for extracting supernatant from centrifuges or other devices are required in other experiments, and the problems of mutual interference and even pollution exist.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a mutual interference prevention suction system, which can ensure that a suction pipe participating in operation is disposable in the process of extracting liquid every time, and the test tubes cannot be polluted mutually. In a preferred embodiment, the disposable straws can also be supplied continuously. The depth of liquid pumped per time can be conveniently controlled.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a mutual interference prevention suction system comprises a guide rail, a lifting seat slides along the guide rail, a suction pump sliding along the lifting seat is arranged on the lifting seat, and an inlet pipe is arranged on the suction pump;

a suction pipe supply device is arranged below the guide rail and is used for continuously supplying suction pipes and connecting the suction pipes with the inlet pipe within the stroke range of the suction pump;

a straw taking device is also arranged for separating the straw from the inlet pipe.

In a preferable scheme, a gear rack mechanism or a belt mechanism is arranged between the lifting seat and the guide rail, and the driving mechanism drives the lifting seat to slide through the gear rack mechanism or the belt mechanism.

In a preferable scheme, a synchronous belt is fixedly arranged on the guide rail, a walking driving wheel driven by a driving device to rotate is arranged on the lifting seat, and the walking driving wheel is meshed with the synchronous belt to drive the lifting seat to slide.

In the preferred scheme, the lifting seat is provided with an air cylinder, a lifting belt mechanism or a lifting gear rack mechanism, and the suction pump is driven to lift by the air cylinder, the lifting belt mechanism or the lifting gear rack mechanism.

In the preferred scheme, a rotatable screw rod is arranged on the lifting seat, the end of the screw rod is connected with a lifting motor fixedly arranged on the lifting seat, a nut is arranged on the suction pump, and the nut is in threaded connection with the screw rod;

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

the inlet pipe is communicated with the inlet of the suction pump.

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

In a preferred embodiment, the suction pipe supply device is configured such that the suction pipe rail includes side walls and a bottom wall on both sides, a plurality of suction pipes are in contact with each other between the side walls on both sides, one end of each suction pipe is in contact with the bottom wall, the other end of each suction pipe points in the direction of the inlet pipe, and the suction pipe at the end of the suction pipe rail is aligned with the inlet pipe.

In a preferred scheme, a friction wheel is arranged on one side of the suction pipe track to enable suction pipes to be closely arranged;

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

In a preferred scheme, the structure of the straw taking device is as follows: be equipped with the gripper jaw that can open and shut on the pedestal, be equipped with between the gripper jaw and make the gripper jaw keep closed spring, be equipped with the bell at the end of gripper jaw, certain stroke position alignment of bell and import pipe, the bell is close to import pipe one end diameter great, and the one end diameter of keeping away from the import pipe is less, and the diameter of keeping away from the one end of import pipe is slightly less than the diameter of straw to the messenger inserts in the bell at the import pipe, then blocks the end of straw when withdrawing from.

Preferably, an electromagnet is further arranged between the clamping jaws.

The invention provides an anti-mutual-interference suction system, which can avoid mutual interference of liquid in a test tube in the process of automatically sucking liquid by a liftable suction pump and a replaceable suction tube. And the operation action is convenient and reliable. In the preferred scheme, the suction depth can be conveniently controlled, the suction amount at each time can be accurately controlled through automatic control, and the liquid quantitative suction device is suitable for quantitatively sucking liquid in the middle layer or the bottom layer.

Drawings

The invention is further illustrated by the following examples in conjunction with the accompanying drawings:

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

Fig. 2 is a schematic top view of the present invention.

Fig. 3 is a schematic structural view of the travel driving device of the lifting seat of the present invention.

FIG. 4 is a schematic structural view of an accurate liquid supply apparatus according to the present invention.

FIG. 5 is a schematic view of the lifting driving structure of the suction pump of the present invention.

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

FIG. 7 is a schematic top view of the straw-taking device of the present invention.

In the figure: the device comprises a suction device 1, a lifting motor 101, a lifting seat 102, a guide rail 103, a screw rod 104, a suction pump 105, an inlet pipe 106, a synchronous belt 107, a traveling driving wheel 108, a lifting gear rack mechanism 109, a lifting cylinder 110, an accurate liquid supply device 2, an injector 201, a liquid supply pipe 202, a base 203, a pipe positioning block 204, a piston positioning nut slider 205, a liquid supply screw rod 206, a liquid supply motor 207, a suction pipe 3, a suction pipe track 4, a suction pipe taking device 5, a clamping claw 51, a spring 52, a conical opening 53, an electromagnet 54, a seat body 55, a liquid collection bag 6, a friction wheel 7, a centrifugal device 8, a loading and unloading manipulator 9 and a test tube.

Detailed Description

Example 1:

1-2, the mutually interference preventing suction system comprises a guide rail 103, preferably a horizontally arranged guide rail, but in some special scenes, an inclined guide rail is also available, a lifting seat 102 slides along the guide rail 103, 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 straw supply means for continuously supplying straws 3 and connecting the straws 3 to the inlet pipe 106 within the stroke range of the suction pump 105 is further provided below the guide rail 103;

a suction pipe removal device 7 is also provided for detaching the suction pipe 5 from the inlet pipe 106. With the structure, when suction is needed, the suction pump 105 can descend to enable the inlet pipe 106 to be sleeved with the suction pipe 3, then ascend, move to the upper part of the test tube 10 of the centrifugal device 8, then descend to the preset height, start the suction pump 105 to suck liquid, ascend the suction pump 105 after suction is completed, then move to the upper part of the suction pipe taking device 5, and then take off the suction pipe 5. With this circulation, it can be ensured that the suction operations between the individual straws do not interfere with each other. In addition, the suction pump 105 is positioned on the lifting seat 102, the inlet of the suction pump 105 is close to the liquid in the suction pipe 3, and the amount of suction in each time can be accurately controlled through calibration, so that the liquid in the middle layer or the bottom layer of the test tube can be conveniently extracted. For example, in certain density gradient centrifugation methods, it is desirable to draw liquid from a layer of a particular height in between.

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

Preferably, as shown in fig. 3, a timing belt 107 is fixedly disposed on the guide rail 103, a traveling driving wheel 108 driven by a driving device to rotate is disposed on the lifting seat 102, and the traveling driving wheel 108 is engaged with the timing belt 107 to drive the lifting seat 102 to slide. With this configuration, the elevating base 102 is driven to slide along the guide rail 103 by the rotation of the traveling drive wheel 108.

Preferably, as shown in fig. 5 and 6, the lifting base 102 is provided with an air cylinder 110, a lifting belt mechanism 109 or a lifting rack and pinion mechanism 109, and the suction pump 105 is driven to lift by the air cylinder 110, the lifting belt mechanism 109 or the lifting rack and pinion mechanism 109. The scheme of the air cylinder 110 is suitable for occasions with high requirements on speed and low requirements on positioning accuracy.

Preferably, as shown in fig. 1, a rotatable screw 104 is arranged on the lifting seat 102, an end of the screw 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 104; with this structure, the elevating movement of the suction pump 105 can achieve higher displacement accuracy. And can realize the auto-lock, be fit for needing high accuracy, the occasion that requires not high to operating speed.

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.

In a preferred embodiment, the suction pump 105 is a diaphragm pump, a peristaltic pump or a water ring vacuum pump. The liquid pumping amount of the diaphragm pump and the peristaltic pump is easy to control. By calibrating the volume of the suction tube and inlet tube 106 to correspond to the number of turns of the diaphragm or peristaltic pump, the amount of liquid pumped per time can be precisely controlled.

In a preferred embodiment, as shown in fig. 1 and 2, the pipette supply apparatus is configured such that the pipette rail 4 includes side walls and a bottom wall on both sides, a plurality of pipettes 3 are in contact with each other between the side walls on both sides, one end of the pipette 3 is in contact with the bottom wall, the other end of the pipette 3 is directed in the direction of the inlet pipe 106, and the pipette 3 located at the end of the pipette rail 4 is aligned with the inlet pipe 106. So that the suction pipe 3 can be accurately fitted over the inlet pipe 106 when the inlet pipe 106 is lowered.

In a preferred embodiment, as shown in fig. 2, a friction wheel 7 is provided on one side of the straw track 4 to make the straws closely arranged; the friction wheel 7 is preferably made of rubber.

Further preferably, as shown in fig. 2, the straw rail 4 is provided with a curved section, at the location of which the friction wheel 7 is located. It is further preferred that the straw track 4 is also angled so that the straws in the straw track 4 are in close proximity to each other.

In a preferred embodiment as shown in fig. 7, the straw-taking device 5 has the following structure: the holder body 55 is provided with openable clamping claws 51, springs 52 for keeping the clamping claws 51 closed are arranged between the clamping claws 51, the end of each clamping claw 51 is provided with a tapered opening 53, the tapered opening 53 is aligned with a certain stroke position of the inlet pipe 106, the diameter of the end, close to the inlet pipe 106, of the tapered opening 53 is larger, the diameter of the end, far away from the inlet pipe 106 is smaller, the diameter of the end, far away from the inlet pipe 106 is slightly smaller than that of the straw 3, so that the inlet pipe 106 is inserted into the tapered opening 53, and the tapered opening 53 blocks the end of the straw 3 when the straw is withdrawn. With this structure, the suction pipe 3 of the inlet pipe 106 can be removed without providing additional power.

Preferably, an electromagnet 54 is further provided between the clamping jaws 51. An electromagnet 54 is provided to control the active opening and closing of the gripper fingers 51.

Example 2:

taking the best scheme as an example, when the test tube loading and unloading manipulator 9 is used in fig. 2, the test tube 10 filled with raw materials is placed into the corresponding station of the centrifugal device 8, one test tube 10 is loaded each time, the centrifugal device 8 rotates 90 degrees to wait for loading of the next test tube 10, when the test tube 10 passes below the precise liquid supply device 2, as shown in fig. 4, the liquid supply motor 207 is operated to rotate the liquid supply screw rod 206 on the base 203 to drive the piston positioning nut slider 205 to move to the left side of fig. 4, because the piston positioning nut slider 205 is fixedly connected with the piston rod of the syringe 201, the piston of the corresponding syringe 201 moves to the left side of fig. 4, and the liquid in the syringe 201 fixed on the base 203 through the tube positioning block 204 is quantitatively injected into the test tube 10 through the liquid supply tube 202. When all the injection proportioning is finished, the centrifugal device 8 starts centrifugation. At the same time, the elevator base 102 is moved over the end of the pipette rail 4 of the pipette supply to align with a pipette 3, and the elevator base 102 is lowered to insert the inlet tube 106 into the pipette 3, or vice versa, to insert the pipette 3 into the inlet tube 106 and is secured by friction. The elevator 102 is raised and the pipette 3 is removed from the pipette rail 4 with the elevator. The elevator base 102 is moved over the test tube 10. After the centrifugal device 8 is stopped, the lift base 102 is lowered to insert the pipette 3 into the test tube 10, the suction pump 105 is operated to draw the liquid in the test tube 10 quantitatively, and the drawn liquid is discharged into the liquid collecting bag 6 through the flexible tube. After the suction is finished, the lifting seat 102 is lifted and moved to the position above the suction pipe taking device 5, the lifting seat 102 is lowered, so that the suction pipe 3 passes through the conical opening 53 of the suction pipe taking device 5, the lifting seat 102 is lifted, the suction pipe 3 is blocked by the conical opening 53 of the suction pipe taking device 5, and the suction pipe 3 is separated from the inlet pipe 106. When the scheme that the suction pipe 3 is inserted into the inlet pipe 106 is adopted, the suction pipe taking device 5 adopts the clamping claw 51 with the electromagnet 54 to clamp and fix the suction pipe 3, so that the suction pipe 3 is separated from the inlet pipe 106, the clamping claw 51 is released after separation, the used suction pipe 3 falls down, and the collected suction pipe is treated uniformly. The lifting seat 102 moves to the upper part of the straw track 4, is connected with another new straw 3, and repeats the steps, so that the suction in each test tube 10 can not be polluted.

The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.

Claims

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).