CN213327570U

CN213327570U - A appurtenance for little biological detection

Info

Publication number: CN213327570U
Application number: CN202022172466.3U
Authority: CN
Inventors: 吴振安; 刘宇娜
Original assignee: Beijing Integrated Traditional Chinese And Western Medicine Hospital
Current assignee: Beijing Integrated Traditional Chinese And Western Medicine Hospital
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-06-01
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses an appurtenance for microbial detection, include: the liquid-transfering gun body is connected with the liquid-transfering gun head through a connecting part, and the connecting part and the liquid-transfering gun body are detachably connected with each other; the anti-backflow film is connected with the inner wall of the pipette head, the shape of the anti-backflow film is matched with the cross section of the cavity of the pipette head, and the anti-backflow film is in an open state in the pressurizing and depressurizing processes of the pipette head; the finger grooves are arranged at the upper part of the outer side of the pipette body and are matched with the bent shapes of four fingers except for the thumb under the palm holding state; the pressing head is arranged at the top end of the liquid-transfering gun body. The utility model has the advantages that: the liquid leakage condition of the pipette head in a vertically suspended state is avoided; operating personnel accessible finger groove and press the groove and hold the liquid-transfering gun and accomplish and get liquid or flowing back action, greatly reduced the risk that the liquid-transfering gun slided from the hand.

Description

A appurtenance for little biological detection

Technical Field

The utility model relates to a medical treatment inspection apparatus technical field particularly, relates to an appurtenance for microbiological detection.

Background

Various aids may be involved in the detection of microorganisms, such as shakers, mixers, microscopes, incubators, and pipette guns, among others. Among them, pipette guns are auxiliary tools often used in the medical field for transporting a measured volume of liquid during the detection of microorganisms. Typically, pipette guns operate by creating a partial vacuum above the liquid holding chamber, the reduced pressure enabling a liquid sample to be drawn into the pipette gun or by increasing the pressure to selectively release the vacuum to expel the liquid. The amount of liquid aspirated during pipetting is typically greater than a single addition, i.e., the amount of liquid aspirated by the pipette gun needs to be added multiple times to be completely emptied. In the process, as the pipetting gun cannot be horizontally placed or inverted, the pipetting gun head can be vertically suspended for many times, and the liquid leakage of the pipetting gun head can be caused by air pressure or the head structure of the pipetting gun; meanwhile, the problem that the liquid-transfering gun slides off from the hand in the liquid-discharging process due to the fact that the hand of the liquid-transfering gun is weak when an operator holds the liquid-transfering gun for a long time.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, an object of the present invention is to provide an auxiliary tool for detecting microorganisms.

The utility model provides an appurtenance for microbial detection, this appurtenance includes:

the liquid transfer gun comprises a liquid transfer gun body, a liquid transfer gun head and a liquid transfer gun body, wherein the liquid transfer gun body is connected with the liquid transfer gun head through a connecting part, and the connecting part is detachably connected with the liquid transfer gun body and/or the liquid transfer gun head;

the anti-backflow film is connected with the inner wall of the liquid-transfering gun head, the shape of the anti-backflow film is matched with the cross section of the cavity of the liquid-transfering gun head, and the anti-backflow film is in an open state in the pressurizing and depressurizing processes of the liquid-transfering gun;

the finger grooves are arranged at the upper part of the outer side of the liquid-transferring gun body and are matched with the bending shapes of four fingers except for the thumb under the palm holding state;

and the pressing head is arranged at the top end of the liquid-transferring gun body.

As a further improvement, the outside and the inside of the pipette body are both provided with a pressure sensor.

As a further improvement, the liquid-transfering gun is provided with a display screen on the body, the display screen is provided with at least four windows, including a range window, a liquid-transfering window and two air pressure windows.

As a further improvement of the present invention, the two air pressure windows are respectively located outside and inside the pipette body the air pressure sensor signal connection.

As a further improvement of the utility model, a pressing groove is arranged on the pressing head.

As a further improvement of the present invention, the connecting portion is a tapered shape with a large upper portion and a small lower portion.

As a further improvement of the present invention, the backflow prevention membrane is provided with a plurality of backflow prevention flaps, adjacent two of which are in close contact with each other and do not overlap.

As a further improvement, the surface of the finger groove and the pressing groove are frosted.

As a further improvement of the present invention, the connecting portion with the junction of the pipette head body and the connecting portion with the junction of the pipette head all are provided with a sealing gasket.

As a further improvement of the utility model, the detachable connection is a threaded connection, a slot connection or a buckle connection.

The utility model has the advantages that: by arranging the anti-backflow film, the liquid leakage condition of the pipette tip in a vertically suspended state can be avoided; set up finger groove in the vertical direction of liquid-transfering gun body, set up at the up end of liquid-transfering gun press head and press the groove, operating personnel accessible finger groove and press the groove and hold the liquid-transfering gun and accomplish and get liquid or flowing back the action, greatly reduced the risk of liquid-transfering gun from hand landing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive faculty.

FIG. 1 is a schematic structural diagram of an auxiliary tool for microorganism detection according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an anti-reflux membrane in an auxiliary tool for microorganism detection according to an embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1. a pipette body; 2. a connecting portion; 3. a pipette tip; 4. an anti-reflux membrane; 5. a display screen;

6. a finger groove; 7. an air pressure sensor; 8. a pressing head; 9. pressing the groove; 10. an anti-reflux flap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, in the description of the present invention, the terms used are for illustrative purposes only and are not intended to limit the scope of the present invention. The terms "comprises" and/or "comprising" are used to specify the presence of stated elements, steps, operations, and/or components, but do not preclude the presence or addition of one or more other elements, steps, operations, and/or components. The terms "first," "second," and the like may be used to describe various elements, not necessarily order, and not necessarily limit the elements. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. These terms are only used to distinguish one element from another. These and/or other aspects will become apparent and those skilled in the art will more readily appreciate the description of the embodiments of the present invention presented in conjunction with the following drawings. The drawings are only for purposes of illustrating the described embodiments of the invention. One skilled in the art will readily recognize from the following description that alternative embodiments of the structures and methods illustrated in the present application may be employed without departing from the principles of the invention.

Examples, as shown in fig. 1-2, an auxiliary tool for microorganism detection according to an embodiment of the present invention can be used for transporting solutions such as culture media or reactants during microorganism detection, and includes:

the pipette tip comprises a pipette tip body 1 and a pipette tip body 3, wherein the pipette tip body 3 is connected with the connecting part 2, and the connecting part 2 is detachably connected with the pipette tip body 1 and/or the connecting part 2 is detachably connected with the pipette tip body 3;

the anti-backflow film 4 is connected with the inner wall of the pipette tip 3, the shape of the anti-backflow film 4 is matched with the cross section of the cavity of the pipette tip 3, and the anti-backflow film 4 is in an open state in the pressurizing and depressurizing processes of the pipette tip;

the finger grooves 6 are arranged at the upper part of the outer side of the liquid-transferring gun body 1, and the finger grooves 6 are matched with the bending shapes of four fingers except for a thumb in a palm holding state;

and the pressing head 8 is arranged at the top end of the liquid-transferring gun body 1 and is used for adjusting the volume of the liquid-transferring gun body 1.

In this embodiment, the working flow and functions of the pipette are described by taking as an example that one end of the pressing head of the pipette is set as the upper end and one end of the pipette tip 3 is set as the lower end:

the upper end of connecting portion 2 can be dismantled with the lower extreme of pipetting gun body 1 and be connected, and the lower extreme of connecting portion 2 can be dismantled with pipetting gun head 3 and be connected to realize being connected between pipetting gun body 1 and the pipetting gun head 3, both ends all can be convenient for change pipetting gun head 3 for dismantling the connected mode, and are convenient for to the washing or disinfection of pipetting gun body 1 and connecting portion 2. The anti-backflow film 4 is arranged at the lower part in the inner cavity of the pipette tip 3 and is fixed by being connected with the inner wall of the pipette tip 3. In the process of reducing pressure and absorbing liquid of the liquid-transfering gun, the anti-backflow membrane 4 is opened upwards under the pressure reduction effect in the inner cavity of the liquid-transfering gun head 3, so that liquid can smoothly enter the liquid-transfering gun body 1; in the pressurizing and liquid discharging process of the liquid-transfering gun, the anti-backflow membrane 4 is downwards opened under the pressurizing action in the inner cavity of the liquid-transfering gun head 3, so that liquid is smoothly discharged from the liquid-transfering gun body 1; when the pipette does not act, the internal and external pressure of the pipette is consistent, and the air pressures on the upper side and the lower side of the anti-reflux membrane 4 are balanced, so that the pipette is in a closed state, and the pipette head 3 can be prevented from leaking due to the action of gravity when being in a vertical suspension state. When experimenter operated the pipette, the thumb was pressed on pressing head 8, and other four fingers are crooked closely to be laminated in finger groove 6, realize gripping pipette body 1, even if under the condition of long-time operation pipette, because finger groove 6 is to the limiting displacement of finger, thumb operation pressing head 8 can not make the pipette from hand landing yet.

Further, the outer side and the inner side of the liquid-transfering gun body 1 are both provided with an air pressure sensor 7. In the use process of the liquid-transfering gun, the air pressure of the external environment can cause certain influence on the accuracy of the liquid-transfering gun. The atmospheric pressure sensor 7 arranged on the inner side and the outer side of the liquid-transfering gun body 1 can monitor the atmospheric pressure of the inner part and the external environment of the liquid-transfering gun body 1 in real time, the accuracy of the liquid-transfering gun can be ensured when the atmospheric pressure measured by the two atmospheric pressure sensors is the same, when the atmospheric pressure values measured by the two atmospheric pressure sensors 7 are different, appropriate measures are needed to be adopted to properly adjust the external environment pressure, if the indoor temperature can be adjusted through an air conditioner, and then the effect of changing the indoor environment atmospheric pressure is achieved.

Further, be equipped with display screen 5 on the liquid-transfering gun body 1, the display screen is equipped with four at least windows, including range window, move liquid volume window and two atmospheric pressure windows.

Furthermore, the two air pressure windows are respectively connected with air pressure sensors 7 positioned on the outer side and the inner side of the liquid-transfering gun body 1 through signals.

The window on the display screen can directly obtain the quantity of the parameters to be controlled, such as the measuring range of the pipette, the pipette quantity of the pipette, the air pressure inside the pipette body 1 and the ambient air pressure outside the pipette body 1. In practical application, a window can be added according to the hospital of the experimenter so as to display the parameters which the experimenter wants to observe. The four windows are selected in the embodiment, and besides the two parameters of the display range and the pipetting amount, the two windows are used for displaying the air pressures on the inner side and the outer side of the pipetting gun body 1 so as to indicate whether the experimenter can perform pipetting operation under the current air pressure environment.

Furthermore, a pressing groove 9 is arranged on a pressing head 8 of the pipette body 1.

Further, the surfaces of the finger groove 6 and the pressing groove 9 are frosted.

When the laboratory staff carries out imbibition or flowing back operation in the microorganism testing process, press the thumb in pressing groove 9 to avoid laboratory staff's thumb to follow pressing head 8 landing in exerting oneself. Preferably, the surface of the pressing groove 9 may be ground to prevent the thumb from slipping off the pressing head 8. In order to increase the anti-skid effect, the surface of the finger groove 6 can be frosted, so that the liquid-transferring gun can be effectively prevented from sliding off the hand of an experimenter, and the smooth operation of microorganism detection is ensured.

Further, the connecting portion 2 is tapered with a large top and a small bottom. Usually, the pipette head 3 is a slender tube, the resistance generated by the pipette head is relatively small, and if the pressure difference between the inside and the outside of the pipette is too large in the liquid taking process of a microorganism detection experiment, culture solution or other solutions for microorganism detection can easily enter the pipette body 1, so that the accuracy of the pipette can be seriously influenced. Set up connecting portion 2 into big-end-up's toper, can make the culture solution get into the in-process pressure of pipetting gun body 1 from pipetting gun head 3 and be released gradually, effectively avoid the culture solution to spout because of the too big production of pressure.

Further, the backflow prevention membrane 4 is provided with a plurality of backflow prevention flaps 10, and two adjacent backflow prevention flaps 10 are in close contact and do not overlap. In this embodiment, the anti-backflow membrane 4 is circular and matched with the cross section of the pipette tip 3, is connected with the inner wall of the pipette tip 3 through a circumference, and is divided into a plurality of anti-backflow flaps 10 along a plurality of radial lines, so that the anti-backflow membrane 4 is opened in the pressurizing or depressurizing process. For example, the backflow prevention flaps 10 may be set to 3, 4, or 5, and the number of the backflow prevention flaps 10 is not particularly limited in the present application. The close contact of the two adjacent anti-backflow flaps 10 can ensure the anti-backflow effect of the anti-backflow membrane 4 in a closed state, and the culture solution or other solutions for microorganism detection cannot leak from gaps; in addition, the two adjacent backflow prevention flaps 10 do not overlap, so that the backflow prevention film 4 can be easily opened during pressurization or depressurization, and the adjacent backflow prevention flaps 10 cannot be mutually influenced.

Furthermore, sealing gaskets are arranged at the joint of the connecting part 2 and the pipette tip body 1 and the joint of the connecting part 2 and the pipette tip 3. The sealing washer ensures the sealing performance between the connecting part 2 and the pipetting gun body 1 and between the connecting part 2 and the pipetting gun head 3, and ensures that the pipetting gun cannot leak from the two connecting parts.

Furthermore, the detachable connection is a threaded connection, a clamping groove connection or a buckle connection. In actual use, a proper connection mode can be selected according to the type of the pipette tip 3 to be selected, as long as the used detachable connection mode can achieve the sealing effect after the connection part 2 is connected with the pipette tip body 1 and the connection part 2 is connected with the pipette tip 3, for example, threaded connection can be selected. The application does not specifically limit the detachable connection mode between the connecting part 2 and the pipette tip body 1 and between the connecting part 2 and the pipette tip 3.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Furthermore, those of ordinary skill in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.

It will be understood by those skilled in the art that while the invention has been described with reference to exemplary embodiments, various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims

1. An aid for the detection of microorganisms, the aid comprising:

the liquid transfer gun comprises a liquid transfer gun body (1) and a liquid transfer gun head (3), wherein the liquid transfer gun body (1) is connected with the liquid transfer gun head (3) through a connecting part (2), and the connecting part (2) is detachably connected with the liquid transfer gun body (1) and/or the connecting part (2) is detachably connected with the liquid transfer gun head (3);

the anti-backflow film (4) is connected with the inner wall of the liquid-transfering gun head (3), the shape of the anti-backflow film (4) is matched with the cross section of the cavity of the liquid-transfering gun head (3), and the anti-backflow film (4) is in an open state in the pressurizing and depressurizing processes of the liquid-transfering gun;

the finger groove (6) is arranged at the upper part of the outer side of the liquid transferring gun body (1), and the finger groove (6) is matched with the bending shapes of four fingers except for a thumb under a palm holding state;

and the pressing head (8) is arranged at the top end of the liquid-transferring gun body (1).

2. The aid for the detection of microorganisms according to claim 1, characterized in that the pipetting gun body (1) is provided with air pressure sensors (7) both on the outside and on the inside.

3. The assistant tool for microorganism detection as claimed in claim 2, wherein the pipetting gun body (1) is provided with a display screen (5) which is provided with at least four windows including a range window, a pipetting volume window and two air pressure windows.

4. The aid for the detection of microorganisms according to claim 3, characterized in that the two air pressure windows are in signal connection with the air pressure sensors (7) located outside and inside the pipette body (1), respectively.

5. The auxiliary tool for microorganism detection as claimed in claim 1, wherein the pressing head (8) is provided with a pressing groove (9).

6. The aid for the detection of microorganisms according to claim 1, wherein the connecting portion (2) is tapered with a large top and a small bottom.

7. The aid for the detection of microorganisms according to claim 1, characterized in that said anti-reflux membrane (4) is provided with a plurality of anti-reflux flaps (10), two adjacent anti-reflux flaps (10) being in close contact and not overlapping.

8. The aid for the detection of microorganisms according to claim 5, characterized in that the surfaces of the finger grooves (6) and the pressing grooves (9) are frosted.

9. The aid for the detection of microorganisms according to claim 1, characterized in that the connection of the connector (2) to the pipette tip (3) and the connection of the connector (2) to the pipette body (1) are provided with sealing gaskets.

10. The aid for the detection of microorganisms according to claim 1, wherein the detachable connection is a threaded connection, a bayonet connection or a bayonet connection.