A pipetting device

Abstract

The application discloses a kind of kind pipetting device, comprising: drive seat, which is provided with liquid suction driving device and pipetting driving device, and the output of liquid suction driving device and pipetting driving device is respectively provided with liquid suction runner and pipetting runner;Pipetting body, including injector shell, push mechanism and pipette, the cavity that contains push mechanism and pipette is provided in injector shell, and push mechanism is fixedly connected with the end of piston rod of pipette;Liquid suction rotating rope, one end is connected with the circumferential side wall of liquid suction runner, the other end is connected with push mechanism, and under the drive of liquid suction driving device, pull piston away from the needle of pipette, so that pipette sucks injection liquid;Pipetting transmission rope, one end is connected with the circumferential side wall of pipetting runner, the other end is connected with push mechanism, and under the drive of pipetting driving device, pull piston close to the needle of pipette, so that pipette discharges injection liquid.The device in the application can realize automatic pipetting without tremor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to a pipetting device. BACKGROUND

[0002] In the fields of biology, chemistry and medicine, pipettes are commonly used tools for quantitative suction and removal of various liquids, which generally have a cylindrical shell and a piston rod in the shell, and pulling or pushing the piston rod can realize the operation of liquid suction and removal. In order to improve the accuracy and efficiency of liquid suction and removal, the application of automatic pipettes is gradually increasing. At present, a micro motor is generally arranged at the rear end of the shell and a driving traction device controlled by the micro motor, and the traction device is a lead screw which can be inserted into the piston rod. The tail end of the lead screw is connected with the output shaft of the micro motor, and the power switch of the micro motor is located outside the shell. When the user uses the automatic pipette, the power switch of the micro motor can be controlled to realize the conversion of liquid suction and removal process and the control of the amount of liquid suction and removal. However, since even the excellent performance of the motor will produce vibration during operation, the above pipette cannot be applied to the liquid suction and removal process with living organisms as the object, nor can it be applied to microcosmic scientific research and microcosmic medical treatment. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to solve the problem that the motor in the existing automatic pipette will produce vibration during operation, so that it cannot be applied to the liquid suction and removal process with living organisms as the object, nor can it be applied to microcosmic scientific research and microcosmic medical treatment. The present application provides a pipetting device.

[0004] Therefore, the technical problem to be solved by the present application is to solve the problem that the motor in the existing automatic pipette will produce vibration during operation, so that it cannot be applied to the liquid suction and removal process with living organisms as the object, nor can it be applied to microcosmic scientific research and microcosmic medical treatment. The present application provides a pipetting device.

[0005] Further, the pipette shell is a pen-shaped shell, and one end of the pen-shaped shell is provided with a first needle hole for accommodating the needle.

[0006] Further, the other end of the pen-shaped shell is provided with a first rope hole and a second rope hole for accommodating the liquid suction transmission rope and the liquid transfer transmission rope respectively; the cavity is further provided with a direction adjusting wheel, which is arranged on the side of the injection mechanism close to the liquid transfer device; the liquid transfer transmission rope is connected with the injection mechanism after winding through the direction adjusting wheel.

[0007] Further, a plurality of first adjusting wheels are arranged between the first rope hole and the injection mechanism and between the second rope hole and the injection mechanism, so as to adjust the transmission direction of the liquid suction transmission rope and the liquid transfer transmission rope.

[0008] Further, the liquid transfer device shell is a gun-shaped shell, the cavity comprises a first cavity arranged in a barrel part of the gun-shaped shell, and the injection mechanism and the liquid transfer device are arranged in the first cavity; one end of the barrel part is provided with a second needle hole for accommodating a needle to pass through.

[0009] Further, the cavity further comprises a second cavity arranged in a handle part of the gun-shaped shell, the second cavity is in communication with the first cavity; one end of the handle part away from the barrel part is provided with a third rope hole and a fourth rope hole for accommodating the liquid suction transmission rope and the liquid transfer transmission rope respectively; the first cavity and the second cavity are provided with a first direction adjusting wheel and a second direction adjusting wheel at the communication position, and the first direction adjusting wheel and the second direction adjusting wheel are arranged on the side of the injection mechanism close to the liquid transfer device; the first cavity is further provided with a third direction adjusting wheel, and the third direction adjusting wheel is arranged on the side of the injection mechanism away from the liquid transfer device; the liquid transfer transmission rope is connected with the injection mechanism after winding through the first direction adjusting wheel, and the liquid suction transmission rope is connected with the injection mechanism after winding through the second direction adjusting wheel and the third direction adjusting wheel in sequence.

[0010] Further, the cavity further comprises a second cavity arranged in the handle part, the second cavity is in communication with the first cavity; one end of the handle part away from the barrel part is provided with a third rope hole and a fourth rope hole for accommodating the liquid suction transmission rope and the liquid transfer transmission rope respectively; the first cavity and the second cavity are provided with a first direction adjusting wheel and a second direction adjusting wheel at the communication position, and the first direction adjusting wheel and the second direction adjusting wheel are arranged on the side of the injection mechanism away from the liquid transfer device; the first cavity is further provided with a third direction adjusting wheel, and the third direction adjusting wheel is arranged on the side of the injection mechanism close to the liquid transfer device; the liquid suction transmission rope is connected with the injection mechanism after winding through the first direction adjusting wheel, and the liquid transfer transmission rope is connected with the injection mechanism after winding through the second direction adjusting wheel and the third direction adjusting wheel in sequence.

[0011] Further, a plurality of first adjusting wheels are arranged between the first rope hole and the injection mechanism and between the second rope hole and the injection mechanism, so as to adjust the transmission direction of the liquid suction transmission rope and the liquid transfer transmission rope.

[0012] Further, a plurality of second adjusting wheels are arranged on the driving seat body, so as to adjust the transmission direction of the liquid suction transmission rope and / or the liquid transfer transmission rope.

[0013] Further, the pipetting device further comprises a device housing, the driving seat body is arranged in the device housing, and a receiving cavity is further arranged on the device housing to receive the pipetting body; the pipetting device further comprises a detachable cover body matched with the opening of the receiving cavity.

[0014] The technical scheme provided by the present application has the following advantages:

[0015] 1. The pipetting device provided by the present application, by arranging the liquid suction driving device and the pipetting driving device on the driving seat body and arranging the pipette in the pipetting housing which is independent of the driving seat body, the vibration of the liquid suction driving device and the pipetting driving device during use does not affect the pipette; at the same time, by arranging the pipetting rotating wheel at the output end of the pipetting driving device and connecting the pipetting transmission rope with the circumferential side wall of the pipetting rotating wheel, the rotation of the pipetting driving device is converted into the pulling movement of the pipetting transmission rope, and by connecting one end of the pipetting transmission rope with the output end of the pipetting driving device and the other end with the injection mechanism fixed to the end of the piston rod of the pipette, the pipetting transmission rope can be pulled to move the piston rod close to the needle of the pipette under the driving of the pipetting driving device, so as to realize the discharge of the injection liquid in the pipette; similarly, by arranging the liquid suction driving device, the liquid suction rotating wheel and the liquid suction transmission rope, the injection liquid in the pipette can be sucked, so that the pipetting device can automatically suck and pipette, the accuracy and efficiency of the liquid suction and pipetting are improved, and at the same time, the vibration generated during the operation of the pipetting driving device and the liquid suction driving device does not affect the pipette, so that the pipette can be applied to the liquid suction and pipetting process with a living body as the object, microscopic scientific research experiments and microscopic medical treatment and other scenes with high requirements for the vibration during the operation of the pipette, of course, it can also be applied to other scenes with low requirements for the vibration during the operation of the pipette, so that the application range is wide.

[0016] 2. The pipetting device provided by the present application, by arranging the pipette housing in a pen type which is convenient to hold and arranging the direction adjusting wheel in the cavity of the pen type housing, the first rope hole and the second rope hole on the pen type housing for respectively accommodating the liquid suction transmission rope and the pipetting transmission rope can be arranged at one end of the pen type housing, so that the integrity of the pen type housing can be improved, and the influence of the pipetting transmission rope and the liquid suction transmission rope extending outside the pen type housing on the user holding the pipetting device can be reduced, so that the use convenience of the pipetting device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the specific embodiments of the present application or the technical scheme in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 A structural schematic diagram of a pipetting device provided for an embodiment of the present application;

[0019] Figure 2 A structural schematic diagram of another pipetting device provided for an embodiment of the present application;

[0020] Figure 3 A partial structural exploded view of the pipetting device in Figure 1 ;

[0021] Figures 4-6 A structural schematic diagram of functional components in the pipetting device provided for an embodiment of the present application;

[0022] Figure 7 A structural schematic diagram of a pipetting body of a pen-shaped housing provided for an embodiment of the present application;

[0023] Figure 8 A structural exploded view of the pipetting body in Figure 7 ;

[0024] Figure 9 A detailed enlarged view of the structure in Figure 8 ;

[0025] Figure 10 A structural schematic diagram of a pipetting body of a gun-shaped housing provided for an embodiment of the present application;

[0026] Figure 11 A structural exploded view of the pipetting body in Figure 10 ;

[0027] Figures 12-13 A detailed enlarged view of the structure in Figure 11 ;

[0028] Explanation of reference numerals:

[0029] 1 - device housing;

[0030] 11 - detachable cover;

[0031] 12 - storage cavity;

[0032] 2 - display screen;

[0033] 3 - control knob;

[0034] 4 - pedal switch;

[0035] 51 - drive seat;

[0036] 511 - third adjusting wheel;

[0037] 52 - liquid suction driving device;

[0038] 53-pipetting drive device;

[0039] 54-pipetting body;

[0040] 541-pen-shaped housing; 541a-first needle hole; 541b-first string hole; 541c-second string hole; 541d-orientation wheel; 541e-first adjustment wheel;

[0041] 542-rifle-shaped housing; 5421-rifle barrel part; 5422-grip part; 542a-second needle hole; 542b-third string hole; 542c-fourth string hole; 542d-first orientation wheel; 542e-second orientation wheel; 542f-third orientation wheel; 542g-second adjustment wheel;

[0042] 543-pushing mechanism;

[0043] 544-pipette; 5441-piston rod; 5442-needle;

[0044] 55-suction transmission string;

[0045] 56-pipetting transmission string;

[0046] 57-suction rotating wheel;

[0047] 58-pipetting rotating wheel; 58a-groove;

[0048] 59-string sleeve. DETAILED DESCRIPTION

[0049] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0050] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0051] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal connection of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0052] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0053] Please refer to Figures 1-13 A pipetting device disclosed in the present application comprises a device housing 1 and functional components built in the device housing 1, such as Figure 1 and Figure 2 In addition to the above functional components, the pipetting device can further comprise a display screen 2 which can be arranged on a wall surface of the device housing 1 to display the liquid volume in the pipette 544 (the liquid volume can be calculated according to the driving amount of the liquid suction driving device 52 and the pipetting driving device 53 described below); the device housing 1 can further be provided with control knobs 3 corresponding to the liquid suction driving device 52 and the pipetting driving device 53 respectively to control the pipetting volume of single pipetting of the pipette 544 and the liquid suction volume of single liquid suction, specifically, if the liquid suction driving device 52 and the pipetting driving device 53 are servo motors, the control knobs 3 are used to control the length of pulse time of the servo motors, if the liquid suction driving device 52 and the pipetting driving device 53 are step motors, the control knobs 3 are used to control the step angle of the step motors, etc.; the device housing 1 can further be provided with a power switch of the liquid suction driving device 52 and the pipetting driving device 53, specifically, the power switch can be a key switch, or a pedal switch 4 (as shown in the figure), etc.; the pipetting device can further have a loudspeaker, an input keyboard and other structures, which are not listed one by one here.

[0054] Please refer to Figures 3-13 The functional components in the pipetting device disclosed in the present application specifically comprise: a driving seat body 51, a liquid suction driving device 52, a pipetting driving device 53, a pipetting body 54, a liquid suction transmission rope 55 and a pipetting transmission rope 56.

[0055] Among them, as Figures 4-6As shown, the liquid suction driving device 52 and the liquid transfer driving device 53 are arranged on the driving seat body 51, and the output ends of the liquid suction driving device 52 and the liquid transfer driving device 53 are respectively provided with a liquid suction rotating wheel 57 and a liquid transfer rotating wheel 58. Specifically, the liquid suction driving device 52 and the liquid transfer driving device 53 can be a stepper motor or a servo motor.

[0056] Please refer to Figures 8-13 , the liquid transfer body 54 includes a liquid transfer casing, a push injection mechanism 543 and a liquid transfer device 544, wherein the liquid transfer casing is provided with a cavity accommodating the push injection mechanism 543 and the liquid transfer device 544, and the push injection mechanism 543 is fixedly connected with the end of the piston rod 5441 of the liquid transfer device 544; one end of the liquid suction transmission rope 55 is connected with the circumferential side wall of the liquid suction rotating wheel 57, and the other end is connected with the push injection mechanism 543, and under the driving of the liquid suction driving device 52, the piston is pulled away from the needle 5442 of the liquid transfer device 544, so that the liquid transfer device 544 sucks the injection liquid; one end of the liquid transfer transmission rope 56 is connected with the circumferential side wall of the liquid transfer rotating wheel 58, and the other end is connected with the push injection mechanism 543, and under the driving of the liquid transfer driving device 53, the piston is pulled close to the needle 5442 of the liquid transfer device 544, so that the liquid transfer device 544 discharges the injection liquid.

[0057] In this application, in order to make the end of the liquid suction transmission rope 55 close to the liquid suction rotating wheel 57 be effectively pulled around the circumferential side wall of the liquid suction rotating wheel 57 or be released from the circumferential side wall of the liquid suction rotating wheel 57 when the liquid suction driving device 52 drives the liquid suction rotating wheel 57 to rotate, as shown, Figure 6 a groove 58a matched with the liquid transfer transmission rope 56 can be arranged on the circumferential side wall of the liquid transfer rotating wheel 58, and the end of the liquid transfer transmission rope 56 is fixed to the bottom of the groove 58a; similarly, a groove matched with the liquid suction transmission rope 55 can be arranged on the circumferential side wall of the liquid suction rotating wheel 57, and the end of the liquid suction transmission rope 55 is fixed to the bottom of the groove.

[0058] In this application, the driving seat body 51 is arranged in the device casing 1, and as shown, Figure 3As shown, the device housing 1 is further provided with a receiving cavity 12 for receiving the pipetting body 54, and a matched detachable cover 11 is arranged at the opening of the receiving cavity 12. Specifically, the pipetting body 54 has a non-use state of being received in the receiving cavity 12, and a use state of being taken out of the receiving cavity 12 with the detachable cover 11 taken off from the opening of the receiving cavity 12. Since the pipetting body 54 needs to be taken out of the device housing 1 in the use state, and the driving seat 51 is fixed in the device housing 1, that is, the liquid suction transmission rope 55 and the pipetting transmission rope 56 both extend out of the device housing 1, in order to improve the regularity and use convenience of the entire pipetting device, the pipetting transmission rope 56 and the liquid suction transmission rope 55 can be arranged to extend out of the device housing 1 from the same position of the device housing 1. At this time, as shown in FIG. 5, a plurality of third adjusting wheels 511 can be arranged on the driving seat 51 to adjust the transmission direction of the liquid suction transmission rope 55, or adjust the transmission direction of the pipetting transmission rope 56, or adjust the transmission direction of the liquid suction transmission rope 55 and the pipetting transmission rope 56 at the same time. In addition, in order to prevent the liquid suction transmission rope 55 and the pipetting transmission rope 56 extending out of the device housing 1 from being interfered to affect the use of the pipetting device, a rope sleeve 59 can be further arranged outside the liquid suction transmission rope 55 and the pipetting transmission rope 56. Of course, the liquid suction transmission rope 55 and the pipetting transmission rope 56 can slide in the rope sleeve 59.

[0059] Please refer to Figures 7-9 , the pipette housing can be a pen-shaped shell 541, and one end of the pen-shaped shell 541 is provided with a first needle hole 541a for accommodating the needle 5442 to pass through.

[0060] In this application, in order to improve the structural regularity and use convenience of the entire pipetting device, as shown in Figure 8 and Figure 9 , the first rope hole 541b and the second rope hole 541c for respectively accommodating the liquid suction transmission rope 55 and the pipetting transmission rope 56 to pass through can be arranged at the other end (the other end relative to the first needle hole 541a) of the pen-shaped shell 541. At the same time, based on the pulling direction of the pipetting transmission rope 56 applied to the injection mechanism 543 being the direction towards the needle 5442 of the pipette 544, that is, the natural extension direction of the pipetting transmission rope 56 is the direction extending towards the needle 5442 of the pipette 544, in order to make the pipetting transmission rope 56 extend out of the pen-shaped shell 541 through the second rope hole 541c located at the other end of the pen-shaped shell 541, as shown in Figure 8 and Figure 9 , the cavity of the pen-shaped shell 541 is further provided with a direction adjusting wheel 541d, which is arranged on the side of the injection mechanism 543 close to the pipette 544, and the pipetting transmission rope 56 is connected with the injection mechanism 543 after winding around the direction adjusting wheel 541d (so that the extension direction of the pipetting transmission rope 56 is the same as the extension direction of the liquid suction transmission rope 55).

[0061] In the present application, in order to further improve the structural regularity and use convenience of the entire pipetting device, the first rope hole 541b and the second rope hole 541c can also be arranged at the same preset position of the pen-shaped shell 541. At this time, as shown in Figure 9 the first rope hole 541b and the push injection mechanism 543, and the second rope hole 541c and the push injection mechanism 543 can be provided with a plurality of first adjusting wheels 541e to further adjust the transmission direction of the liquid suction transmission rope 55 and the pipetting transmission rope 56.

[0062] Please refer to Figures 10-13 , the pipette shell can also be a gun-shaped shell 542. At this time, the cavity in the pipette shell includes a first cavity arranged in the barrel part 5421 of the gun-shaped shell 542, the push injection mechanism 543 and the pipette 544 are arranged in the first cavity, and one end of the barrel part 5421 is provided with a second needle hole 542a for accommodating the needle 5442.

[0063] In the present application, the cavity in the pipette shell can further include a second cavity arranged in the handle part 5422 of the gun-shaped shell 542, which is in communication with the first cavity. At this time, in order to improve the structural regularity and use convenience of the entire pipetting device, as shown in Figures 11-13 the third rope hole 542b and the fourth rope hole 542c for accommodating the liquid suction transmission rope 55 and the pipetting transmission rope 56 respectively can be arranged at one end of the handle part 5422 (based on the communication between the second cavity in the handle part 5422 and the first cavity of the barrel part 5421, the end is the end of the handle part 5422 away from the barrel part 5421); At the same time, based on the direction of the pulling force of the pipetting transmission rope 56 applied to the push injection mechanism 543 is the direction of the needle 5442 of the pipette 544 (that is, the natural extension direction of the pipetting transmission rope 56 is to extend to the needle 5442 of the pipette 544), the direction of the pulling force of the liquid suction transmission rope 55 applied to the push injection mechanism 543 is the direction away from the needle 5442 of the pipette 544 (that is, the natural extension direction of the liquid suction transmission rope 55 is to extend away from the needle 5442 of the pipette 544), both of which will not extend to the handle part 5422 in the natural state, therefore, in order to make the liquid suction transmission rope 55 and the pipetting transmission rope 56 can extend to outside the gun-shaped shell 542 through the third rope hole 542b and the fourth rope hole 542c respectively arranged at one end of the handle part 5422, as shown in Figures 11-13As shown, the first direction adjusting wheel 542d and the second direction adjusting wheel 542e can be arranged at the communication position of the first cavity and the second cavity, and the first direction adjusting wheel 542d and the second direction adjusting wheel 542e are arranged at the side of the injection mechanism 543 close to the pipette 544, and the third direction adjusting wheel 542f is arranged in the first cavity at the side of the injection mechanism 543 away from the pipette 544, so that the pipette transmission rope 56 is connected to the injection mechanism 543 after passing through the first direction adjusting wheel 542d, and the liquid suction transmission rope 55 is connected to the injection mechanism 543 after passing through the second direction adjusting wheel 542e and the third direction adjusting wheel 542f in sequence.

[0064] Those skilled in the art can understand that the third direction adjusting wheel 542f is mainly used to adjust the direction of the pipette transmission rope 56, so that it is the same as the extension direction of the liquid suction transmission rope 55, and correspondingly, the third direction adjusting wheel 542f can also be arranged to adjust the direction of the liquid suction transmission rope 55, at this time, the first direction adjusting wheel 542d and the second direction adjusting wheel 542e are arranged at the side of the injection mechanism 543 away from the pipette 544, the third direction adjusting wheel 542f is arranged at the side of the injection mechanism 543 close to the pipette 544, the liquid suction transmission rope 55 is connected to the injection mechanism 543 after passing through the first direction adjusting wheel 542d, and the pipette transmission rope 56 is connected to the injection mechanism 543 after passing through the second direction adjusting wheel 542e and the third direction adjusting wheel 542f in sequence.

[0065] In this application, the third direction adjusting wheel 542f can be one wheel, or two wheels as shown. Figures 11-13

[0066] In this application, in order to further improve the structural regularity and use convenience of the whole pipette device, the third rope hole 542b and the fourth rope hole 542c can also be arranged at the same preset position of the gun-shaped shell 542, at this time, as shown, Figures 11-13 the third rope hole 542b and the injection mechanism 543, and the fourth rope hole 542c and the injection mechanism 543 can be provided with a plurality of second adjusting wheels 542g to further adjust the transmission direction of the liquid suction transmission rope 55 and the pipette transmission rope 56.

[0067] ​The pipetting device in the application, by setting the liquid suction driving device 52 and the pipetting driving device 53 on the driving seat body 51, and setting the pipette 544 in the pipetting shell which can be independent of the driving seat body 51, the vibration of the liquid suction driving device 52 and the pipetting driving device 53 in the use process will not affect the pipette 544; at the same time, by setting the pipetting rotating wheel 58 at the output end of the pipetting driving device 53, and connecting the pipetting transmission rope 56 with the circumferential side wall of the pipetting rotating wheel 58, the rotation of the pipetting driving device 53 is converted into the pulling movement of the pipetting transmission rope 56, and by connecting one end of the pipetting transmission rope 56 with the output end of the pipetting driving device 53, and the other end with the injection mechanism 543 fixed to the end of the piston rod 5441 of the pipette 544, the pipetting transmission rope 56 can pull the piston rod 5441 close to the needle 5442 of the pipette 544 under the driving of the pipetting driving device 53, so as to realize the discharge of the injection liquid in the pipette 544; similarly, by setting the liquid suction driving device 52, the liquid suction rotating wheel 57 and the liquid suction transmission rope 55, the injection liquid in the pipette 544 can be sucked, so that the pipetting device can automatically suck and pipette, improve the accuracy and efficiency of the liquid suction and pipetting, and at the same time, the vibration generated in the operation of the pipetting driving device 53 and the liquid suction driving device 52 will not affect the pipette 544, so that the pipette 544 can be applied to the liquid suction and pipetting process of the living body as the object, microcosmic scientific research experiment and microcosmic medical treatment and other scenes which have higher requirements on whether there is slight vibration in the working process of the pipette, of course, it can also be applied to other scenes which have lower requirements on whether there is slight vibration in the pipette 544, so that the application range is wider.

[0068] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Other different forms of changes or variations can be made on the basis of the above description for those skilled in the art. Here, all the embodiments cannot be exhausted, and the obvious changes or variations derived therefrom are still within the protection scope of the application.

Claims

1. A pipetting device, characterized in that, The utility model relates to a kind of injection device, including: Drive seat, liquid suction driving device and pipetting driving device are arranged on it, and the output end of liquid suction driving device and pipetting driving device is respectively provided with liquid suction runner and pipetting runner; Pipette body, including push mechanism and pipette, the cavity that the push mechanism and the pipette are arranged in is provided in the pipette shell, and the push mechanism is fixedly connected with the piston rod end of the pipette; Liquid suction transmission rope, one end is connected with the circumferential side wall of the liquid suction runner, the other end is connected with the push mechanism, and the piston is pulled away from the needle of the pipette under the driving of the liquid suction driving device, so that the pipette sucks injection liquid; Pipetting transmission rope, one end is connected with the circumferential side wall of the pipetting runner, the other end is connected with the push mechanism, and the piston is pulled close to the needle of the pipette under the driving of the pipetting driving device, so that the pipette discharges injection liquid; Device shell, the drive seat is arranged in the device shell, and the device shell is also provided with receiving cavity to receive the pipette body;The pipette device also includes detachable cover body matched with the opening of the receiving cavity;The pipette body has non-use state that is received in the receiving cavity, and the detachable cover body is removed from the opening of the receiving cavity, and the pipette body is removed from the receiving cavity in use state.

2. The pipetting device of claim 1, wherein, The pipette shell is a pen-shaped shell, and one end of the pen-shaped shell is provided with a first needle hole for accommodating the needle.

3. The pipetting device of claim 2, wherein, The other end of the pen-shaped shell is provided with a first rope hole and a second rope hole for accommodating the liquid suction transmission rope and the pipetting transmission rope respectively. The cavity is also provided with a direction adjusting wheel, which is arranged on the side of the push mechanism close to the pipette.

4. The pipetting device of claim 3, wherein A plurality of first adjusting wheels are arranged between the first rope hole and the push mechanism and between the second rope hole and the push mechanism to adjust the transmission direction of the liquid suction transmission rope and the pipetting transmission rope.

5. The pipetting device of claim 1, wherein, The pipette shell is a gun-shaped shell, and the cavity includes a first cavity arranged in the barrel portion of the gun-shaped shell, and the push mechanism and the pipette are arranged in the first cavity.

6. The pipetting device of claim 5, wherein The cavity also includes a second cavity arranged in the handle portion of the gun-shaped shell, and the second cavity is in communication with the first cavity. The other end of the handle portion away from the barrel portion is provided with a third rope hole and a fourth rope hole for accommodating the liquid suction transmission rope and the pipetting transmission rope respectively. The first cavity and the second cavity are communicated with each other, and the communication position of the first cavity and the second cavity is provided with a first direction adjusting wheel and a second direction adjusting wheel, and the first direction adjusting wheel and the second direction adjusting wheel are arranged on the side of the injection mechanism which is far away from the pipette; the first cavity is further provided with a third direction adjusting wheel, and the third direction adjusting wheel is arranged on the side of the injection mechanism which is close to the pipette; the pipette transmission rope is connected with the injection mechanism after passing through the first direction adjusting wheel, and the liquid suction transmission rope is connected with the injection mechanism after passing through the second direction adjusting wheel and the third direction adjusting wheel in sequence.

7. The pipetting device of claim 6, wherein The cavity further comprises a second cavity which is arranged on the handle part and is communicated with the first cavity; the end of the handle part which is far away from the barrel part is provided with a third rope hole and a fourth rope hole which respectively accommodate the liquid suction transmission rope and the pipette transmission rope to pass through; The first cavity and the second cavity are communicated with each other, and the communication position of the first cavity and the second cavity is provided with a first direction adjusting wheel and a second direction adjusting wheel, and the first direction adjusting wheel and the second direction adjusting wheel are arranged on the side of the injection mechanism which is far away from the pipette; the first cavity is further provided with a third direction adjusting wheel, and the third direction adjusting wheel is arranged on the side of the injection mechanism which is close to the pipette; the pipette transmission rope is connected with the injection mechanism after passing through the first direction adjusting wheel, and the liquid suction transmission rope is connected with the injection mechanism after passing through the second direction adjusting wheel and the third direction adjusting wheel in sequence.

8. The pipetting device according to claim 6 or 7, characterized in that The third rope hole and the injection mechanism, and the fourth rope hole and the injection mechanism are both provided with a plurality of second adjusting wheels to adjust the transmission direction of the liquid suction transmission rope and the pipette transmission rope.

9. The pipetting device of claim 8, wherein, The driving seat body is provided with a plurality of third adjusting wheels to adjust the transmission direction of the liquid suction transmission rope and / or the pipette transmission rope.

Images