CN221156747U - Small tissue sampling straw - Google Patents

Abstract

The utility model discloses a tissue sampling straw, which comprises a tail end and a tip end; the tail end comprises a suction bag and a first connecting pipe; the suction bag is communicated with the first connecting pipe; the tip comprises a second connecting pipe and a suction head; the second connecting pipe is communicated with the suction head; the first connecting pipe is detachably connected with the second connecting pipe; a filter screen is arranged between the first connecting pipe and the second connecting pipe; a sealing structure is arranged on the side wall of the tail end; the sealing structure is rotationally connected with the tail end.

Description

A small tissue sampling straw

Technical Field

The utility model belongs to the technical field of medical instruments, and in particular relates to a small tissue sampling straw.

Background technique

Small specimens sent for pathological examination generally include small biopsies through bronchoscopy, percutaneous lung puncture specimens and transbronchial needle aspiration specimens guided by endoscopic ultrasound (EBUS-TBNA). When endoscopic, imaging and clinical doctors take samples from patients, they need to consider whether the patient has bleeding, surrounding mucosal edema, lesions are close to blood vessels, etc. For the sake of patient safety, the sampled tissue may be too small or too fragmented. For the pathology department, our goal is to sample all tissues as much as possible. If the tissue is too small or too fragmented, it cannot be picked up with small and fine tweezers, and it will be crushed with large and wide tweezers. Therefore, when clinical pathology samples are taken, the tissue that is too small and too fragmented cannot be prepared.

If an existing pipette is used to suck up a small tissue, a large amount of formalin fixative is easily sucked in; when embedding the tissue with embedding paper, the tissue and liquid are mixed together because the embedding paper has no filtering ability or has poor filtering ability. The embedding paper cannot be folded neatly, and the tissue will leak, disappear, and dissolve after passing through the machine later.

In view of the above problems, the utility model provides a small tissue sampling straw.

Utility Model Content

In order to overcome the problems raised in the background technology, the utility model provides a small tissue sampling straw.

A small tissue sampling straw comprises a tail end and a tip end; the tail end comprises a suction bag and a first connecting tube; the suction bag and the first connecting tube are connected; the tip end comprises a second connecting tube and a suction head; the second connecting tube and the suction head are connected; the first connecting tube and the second connecting tube are detachably connected; a filter is arranged between the first connecting tube and the second connecting tube; a sealing structure is arranged on the side wall of the tail end; the sealing structure is rotatably connected to the tail end.

Furthermore, the sealing structure is arranged on the side wall of the second connecting pipe.

Furthermore, one end of the first connecting tube away from the suction bag is detachably connected to one end of the second connecting tube away from the suction head.

Furthermore, the first connecting pipe is threadedly connected to the second connecting pipe.

Furthermore, the inner diameters of the first connecting tube and the second connecting tube are equal.

Furthermore, the sealing structure includes a sealing cap, a connecting arm and a mounting ring; one end of the connecting arm is connected to the sealing cap, and the other end is connected to the mounting ring; the mounting ring is rotatably connected to the tail end.

Furthermore, the sealing cap is adapted to an end of the first connecting tube away from the suction bag.

Furthermore, a sealing ring is provided between the first connecting pipe and the second connecting pipe.

Furthermore, the inner diameter of the suction bag is larger than the inner diameter of the first connecting tube.

Furthermore, the inner diameter of the second connecting tube is larger than the inner diameter of the suction head.

The use of the utility model:

1. Aim the suction tip at the liquid for clinical small biopsy;

2. After pressing the suction bag, insert the suction tip into the liquid for clinical small biopsy;

3. Release the suction bag, and when the suction bag rebounds, the liquid to be tested will be sucked into the small tissue sampling tube through the suction head;

4. Invert the small tissue sampling straw so that the tip is at the top and the tail is at the bottom, so that the liquid to be tested sucked into the small tissue sampling straw is filtered through the filter and then enters the tail;

5. Separate the tip and tail and take out the filter;

6. Use a sealing structure to seal the tail end to preserve the filtered liquid for inspection.

Beneficial effects of the utility model:

1. It is divided into a tip and a tail. The tip and the tail are detachably connected, and a filter is set at the connection. The tail end of the pipette is equipped with a larger suction bag to provide pressure for sucking liquid;

2. After sucking in the liquid, turn the pipette upside down, with the tip facing up and the tail facing down. At this time, all small tissues are collected on the filter. Remove the filter from the connection, observe that there is no residual tissue on the inner wall of the tip of the pipette, and then seal the tail end to save the liquid at the tail end. If there are too few tumor cells in the tissue block to make a diagnosis, the liquid at the tail end of the pipette can be used for liquid-based cytology preparation to further provide a basis for histological diagnosis.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a front view of a small tissue sampling straw according to the present invention;

FIG2 is a schematic diagram of the structure of a small tissue sampling straw for implementing the utility model;

FIG3 is a cross-sectional view of a small tissue sampling straw for implementing the utility model;

FIG4 is a schematic diagram of the installation of a filter screen for implementing the present utility model;

FIG5 is a schematic diagram of the structure of a small tissue sampling straw in a closed state according to the present invention;

FIG6 is a front view of a small tissue sampling straw in a closed state according to the present invention;

In the figure, 1, tail end; 2, tip; 3, filter; 4, sealing ring; 11, suction bag; 12, first connecting tube; 13, sealing structure; 21, second connecting tube; 22, suction head; 131, sealing cap; 132, connecting arm; 133, mounting ring.

Detailed ways

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

A small tissue sampling straw as shown in Figures 1-6 includes a tail end 1 and a tip 2; the tail end 1 includes a suction bag 11 and a first connecting tube 12; the suction bag 11 and the first connecting tube 12 are connected; the tip 2 includes a second connecting tube 21 and a suction head 22; the second connecting tube 21 and the suction head 22 are connected; the first connecting tube 12 and the second connecting tube 21 are detachably connected; a filter screen 3 is arranged between the first connecting tube 12 and the second connecting tube 21; a sealing structure 13 is arranged on the side wall of the tail end 1; the sealing structure 13 is rotatably connected to the tail end 1.

Specifically, one end of the first connecting tube 12 away from the suction bag 11 is detachably connected to one end of the second connecting tube 21 away from the suction head 22. When the first connecting tube 12 is connected to the second connecting tube 21, the first connecting tube 12 and the second connecting tube 21 are in a through state.

When in use, press the suction bag 11 to discharge the gas inside the suction bag 11, and then insert the suction head 22 into the liquid to be tested. Release the suction bag 11, and the suction bag 11 will rebound and suck the liquid to be tested into the inside of the small tissue sampling straw through the suction head 22. Then invert the small tissue sampling straw so that the tip 2 is on top and the tail end 1 is on the bottom, so that the liquid to be tested sucked into the small tissue sampling straw is filtered through the filter 3 and enters the tail end 1. Separate the tip 2 from the tail end 1, and take out the filter 3; finally, use the sealing structure 13 to seal the tail end 1 to preserve the filtered liquid to be tested. Put the removed filter 3 into the embedding box and inspect it by machine. If there are too few tumor cells in the tissue block to make a diagnosis, the liquid at the tail end 1 of the straw can be used for liquid-based cytology preparation, which further provides a basis for histological diagnosis.

Specifically, according to the amount of fixative liquid sent for clinical small biopsy, small tissue sampling pipettes are divided into two specifications: 3ml and 5ml according to the amount of pipette.

The diameter of the pipette tip 22 is about 2-3mm, which can suck all tissues into the pipette; the middle filter 3 is embedded in the connection, the diameter of the filter 3 is about 300 mesh (50 microns), and the area is about 2cm*1.5cm, which ensures that it can be directly placed in the embedding box. The size of the embedding box is about 3*2*0.5cm. The tip 2 of the filter 3 bag can automatically adsorb to prevent leakage caused by the tissue passing through the machine later.

Furthermore, the first connecting tube 12 is threadedly connected to the second connecting tube 21 , so as to facilitate the disassembly of the tip end 2 and the tail end 1 .

The inner diameters of the first connecting tube 12 and the second connecting tube 21 are equal, so that the liquid to be tested can be filtered by the filter screen 3 smoothly and then enter the suction bag 11 .

In some embodiments of the present application, a sealing ring 4 is provided between the first connecting pipe 12 and the second connecting pipe 21. The function of the sealing ring 4 is:

1. Prevent the liquid to be tested from flowing out through the connection between the first connecting tube 12 and the second connecting tube 21 during the process of sucking the liquid to be tested, thereby causing waste;

2. Increase the air tightness of the small tissue sampling straw so that the negative pressure provided by the suction bag 11 can fully act on the liquid to be tested; prevent external air from entering the small tissue sampling straw through the connection between the first connecting tube 12 and the second connecting tube 21 and neutralizing the negative pressure provided by the suction bag 11, resulting in the inability to suck the liquid to be tested into the small tissue sampling straw.

As shown in Fig. 1-6, the inner diameter of the suction bag 11 is larger than the inner diameter of the first connecting tube 12. When the suction bag 11 is pressed, a relatively large negative pressure can be generated.

The inner diameter of the second connecting tube 21 is larger than the inner diameter of the suction head 22 .

As shown in Fig. 1-6, the sealing structure 13 is arranged on the side wall of the second connecting tube 21. The sealing structure 13 includes a sealing cap 131, a connecting arm 132 and a mounting ring 133; one end of the connecting arm 132 is connected to the sealing cap 131, and the other end is connected to the mounting ring 133; the mounting ring 133 is rotatably connected to the tail end 1. The sealing cap 131 is adapted to the end of the first connecting tube 12 away from the suction bag 11.

After the tip end 2 and the tail end 1 are separated and the filter screen 3 is taken out, the sealing cap 131 is inserted into the end of the second connecting tube 21 away from the suction bag 11 to store the filtered liquid for inspection in the tail end 1 .

Specifically, the connecting arm 132 is made of soft polymer material, such as silicone and rubber.

The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims (10)

1. A small tissue sampling straw, comprising a tail end and a tip end, characterized in that the tail end comprises a suction bag and a first connecting tube; the suction bag is connected to the first connecting tube; the tip end comprises a second connecting tube and a suction head; the second connecting tube is connected to the suction head; the first connecting tube and the second connecting tube are detachably connected; a filter is arranged between the first connecting tube and the second connecting tube; a sealing structure is arranged on the side wall of the tail end; the sealing structure is rotatably connected to the tail end. 2 . The small tissue sampling straw according to claim 1 , wherein the sealing structure is arranged on the side wall of the second connecting tube. 3. A small tissue sampling suction tube according to claim 1, characterized in that an end of the first connecting tube away from the suction bag is detachably connected to an end of the second connecting tube away from the suction head. 4 . The small tissue sampling straw according to claim 3 , wherein the first connecting tube is threadedly connected to the second connecting tube. 5 . The small tissue sampling straw according to claim 4 , wherein the inner diameters of the first connecting tube and the second connecting tube are equal. 6. A small tissue sampling straw according to claim 1, characterized in that the sealing structure includes a sealing cap, a connecting arm and a mounting ring; one end of the connecting arm is connected to the sealing cap, and the other end is connected to the mounting ring; the mounting ring is rotatably connected to the tail end. 7 . The small tissue sampling suction tube according to claim 6 , wherein the sealing cap is adapted to an end of the first connecting tube away from the suction bag. 8. A small tissue sampling straw according to any one of claims 1 to 7, characterized in that a sealing ring is provided between the first connecting tube and the second connecting tube. 9 . The small tissue sampling suction tube according to claim 1 , wherein the inner diameter of the suction bag is larger than the inner diameter of the first connecting tube. 10 . The small tissue sampling suction tube according to claim 1 , wherein the inner diameter of the second connecting tube is larger than the inner diameter of the suction head.