CN212964299U

CN212964299U - Pretreatment device for solid tissue sample

Info

Publication number: CN212964299U
Application number: CN202021402978.8U
Authority: CN
Inventors: 赵小旭; 史海明
Original assignee: Meizheng Biotech Co ltd; Beijing Meizheng Biotechnology Co ltd
Current assignee: Meizheng Biotech Co ltd; Beijing Meizheng Biotechnology Co ltd
Priority date: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-04-13
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a pretreatment device for solid tissue samples, which comprises a tube body, wherein the top of the tube body is provided with a tube orifice, a tube cover is arranged in the tube orifice, and the top surface of the tube cover is provided with a sample adding hole; a conical micro-pore filtering membrane is arranged in the pipe body; the bottom of body is equipped with the drain pipe, be equipped with the check valve that inserts the drain pipe perpendicularly on the drain pipe. The device can realize extracting and filterable function with waiting to examine the target thing in the sample simultaneously, has saved and has vibrated the operation step that still need the centrifugation after the operation of extracting now, has simplified operation flow, has improved the purity of waiting to examine liquid, has avoided causing the interference to follow-up testing result. Therefore, the pretreatment device of the utility model has important application value in the sample pretreatment operation.

Description

Pretreatment device for solid tissue sample

Technical Field

The utility model belongs to the food safety inspection field, concretely relates to preceding processing apparatus for solid-state tissue sample.

Background

In the field of food detection and analysis, when a sample to be detected is detected, a target object needs to be extracted from a food matrix, and then a solution of the target object is obtained through purification, concentration and other modes, and then qualitative and quantitative detection and analysis are carried out. In the field of modern food detection, for solid tissue samples, the oscillation extraction is the most widely applied extraction mode adopting an organic pretreatment mode, and in the oscillation extraction process, a centrifugal tube is a commonly used extraction container at present. However, the centrifugal tube usually has the problem that twisting the cover, screwing the cover wastes time and energy in the test process, and simultaneously, the physical and chemical detection of mycotoxin is mostly used for grain crops, and after oscillation extraction and centrifugal separation, the problem of bringing out the precipitate together often appears when the extracting solution to be detected is taken out, so that the extraction purity of the liquid to be detected is poor, and the subsequent detection effect is further influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the prior art, the present invention provides a pretreatment device for solid tissue samples.

In order to achieve the above object, the present invention provides the following technical solutions:

a pretreatment device for a solid tissue sample comprises a tube body, wherein the top of the tube body is provided with a tube opening, a tube cover is arranged in the tube opening, and the top surface of the tube cover is provided with a sample adding hole; a conical micro-pore filtering membrane is arranged in the pipe body; the bottom of body is equipped with the drain pipe, be equipped with the check valve that inserts the drain pipe perpendicularly on the drain pipe.

Further, the tube cap is made of rubber, and the tube cap and the tube opening are in interference fit.

Further, the tube cap is made of plastic, threads matched with each other are arranged on the outer wall of the tube cap and the inner wall of the tube opening, and the tube body is connected with the tube cap in a threaded matching mode.

Furthermore, a circle of fixed retainer ring is arranged on the upper edge of the outer wall of the pipe body.

Furthermore, the outer wall of the pipe body is also provided with a clamping piece.

Furthermore, the bottom of the pipe body is of a conical structure, and the conical microporous filtering membrane is arranged at the conical part of the bottom of the pipe body.

Preferably, the pore size of the conical micro-porous filtering membrane is 0.2-0.45 μm.

Furthermore, the stop valve is of a cock type or a plug type, and when the stop valve is of the cock type, a liquid outlet hole communicated with the liquid outlet pipe is formed in the stop valve.

Has the advantages that: the utility model provides a preceding processing apparatus for solid-state tissue sample, the device can realize waiting to examine the target object in the solid-state tissue sample simultaneously and draw and filterable function, has saved and has vibrated still to need centrifugal operating procedure after drawing the operation now, has simplified operation flow, has improved and has drawed the purity of back treating the liquid of surveying, has avoided causing the interference to follow-up testing result. Therefore, the pretreatment device of the utility model has important application value in the sample pretreatment operation.

Drawings

Fig. 1 is a front view of the pretreatment apparatus of the present invention.

Fig. 2 is a perspective view of the pretreatment device of the present invention.

In the figure: 1. a pipe body; 2. a tube cover; 3. fixing a retainer ring; 4. a clamping piece; 5. a conical microporous filtration membrane; 6. a check valve; 7. a liquid outlet pipe.

Detailed Description

The present invention is further described below with reference to specific examples, which are only exemplary and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications are intended to be included within the scope of the invention.

A pretreatment device for a solid tissue sample is shown in figures 1-2 and comprises a tube body 1 for vibration extraction of an object to be detected and an extracting solution, wherein a tube opening is formed in the top of the tube body 1, a tube cover 2 is arranged in the tube opening, the tube cover 2 is arranged in the tube opening and is in tight fit with the tube opening, the tightness of the tube opening is kept, and a sample adding hole is formed in the top surface of the tube cover 2; the pipe cover 2 can be made of rubber materials and plugged in the pipe orifice, the sampling hole is a small hole formed in the top surface of the rubber pipe cover, and the elastic characteristic of rubber cannot cause the problem of liquid leakage; or the plastic material is arranged, the outer wall of the pipe cover and the inner wall of the pipe orifice are provided with mutually matched threads, the pipe body and the pipe cover are connected in a matched mode through the threads, and the sample adding hole in the surface of the plastic pipe cover is buckled and sealed through a hole cap.

Body 1 embeds there is toper microfiltration membrane 5, the bottom of body 1 is the toper structure, toper microfiltration membrane 5 sets up in the toper position of body bottom, and toper microfiltration membrane 5 uses the hot melt method fixed, inserts filtration membrane fixed position in the pipe through the tool earlier promptly, inserts the hot melt rifle again, makes filtration membrane and the circumference position of pipe wall contact melt in an organic whole. The aperture of the conical micro-porous filtering membrane 5 is 0.2-0.45 mu m, and the arrangement of the conical micro-porous filtering membrane 5 can filter large particles in the mixture after vibration and filter the impurity-free solution to be detected; the filtering membrane with the pore diameter of 0.2-0.45 μm does not influence the filtering effect of the liquid.

A liquid outlet pipe 7 is arranged at the bottom of the pipe body 1, and a stop valve 6 vertically inserted into the liquid outlet pipe is arranged on the liquid outlet pipe 7; the stop valve 6 is of a cock type or a plug type, and when the stop valve is of the cock type, a liquid outlet hole communicated with the liquid outlet pipe is formed in the stop valve.

The reason is equipped with round retaining ring 3 on the outer wall of body 1, can prevent that body 1 from dropping on the test-tube rack.

The outer wall of the tube body 1 is also provided with a clamping piece 4, so that the tube body 1 can be fixed on a test tube rack.

The use method of the pretreatment device is as follows:

1. injecting the mixture of the object to be detected and the extracting solution into the tube body through the sample adding hole of the tube cover;

2. vibrating the tube body to fully mix the extracting solution with the object to be detected and extract the object to be detected from the object to be detected;

3. the device is placed on a test tube rack, and the stop valve is opened, so that the liquid to be detected flows out for subsequent detection.

Claims

1. A pretreatment device for a solid tissue sample is characterized by comprising a tube body, wherein the top of the tube body is provided with a tube opening, a tube cover is arranged in the tube opening, and the top surface of the tube cover is provided with a sample adding hole; a conical micro-pore filtering membrane is arranged in the pipe body; the bottom of body is equipped with the drain pipe, be equipped with the check valve that inserts the drain pipe perpendicularly on the drain pipe.

2. The pretreatment apparatus according to claim 1, wherein the cap is made of rubber and the cap is in interference fit with the nozzle.

3. The pretreatment device according to claim 1, wherein the tube cap is made of plastic, the outer wall of the tube cap and the inner wall of the tube opening are provided with mutually matched threads, and the tube body and the tube cap are connected in a thread fit manner.

4. The pretreatment device according to claim 1, wherein a ring of retaining ring is provided on an upper edge of an outer wall of the tube.

5. The pretreatment device according to claim 4, wherein the outer wall of the tube is further provided with a clamping piece.

6. The pretreatment device for solid tissue samples according to claim 1, wherein the bottom of the tube has a tapered structure, and the tapered micro-filtration membrane is disposed at the tapered portion of the bottom of the tube.

7. The pretreatment apparatus according to claim 1, wherein the pore size of the tapered microfiltration membrane is 0.2 to 0.45 μm.

8. The pretreatment device of claim 1, wherein the stop valve is of a plug type or a plug type, and when the stop valve is of a plug type, the stop valve is provided with a liquid outlet hole communicated with the liquid outlet pipe.