Endoscopic precise examination suction biopsy needle

Abstract

The aspiration biopsy needle comprises an outer sleeve and an inner core, the inner core is arranged in the outer sleeve, one end of the outer sleeve is sleeved with an outer sleeve holding piece, and the outer sleeve holding piece is connected with an outer sleeve fixing assembly; a cutting groove is formed in the end, arranged in the outer sleeve, of the inner core, the inner core is hollow and communicated with the cutting groove, the other end of the inner core is sleeved with an inner core holding piece, the inner core holding piece is connected with a negative pressure device connector, the open end of the inner core is communicated with the negative pressure device connector, and a core body, arranged outside the outer sleeve, of the inner core is sleeved with a limiting assembly. According to the utility model, a proper sampling depth can be selected according to actual conditions, so that the success rate of biopsy puncture sampling is greatly improved, consumables are reduced, and injury to patients is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an endoscopic fine examination aspiration biopsy needle. Background Technology

[0002] Endoscopic biopsy is a minimally invasive diagnostic and therapeutic technique performed through the working channel of an endoscope. Although it is an advanced endoscopic technique, it has matured and developed worldwide over the past 30 years. This technique allows for the acquisition of diagnostic specimens such as cells, tissues, and fluids through puncture, as well as for aspiration and injection therapy. Currently, the endoscopes used for biopsies broadly include endoscopic ultrasound (EUS) and non-EUS (i.e., conventional endoscope) procedures. Depending on the application and design in different organs, specific procedures include transbronchial puncture, transbronchial endoscopic ultrasound (TUS), transdigestive endoscopy, and transgastrointestinal endoscopic ultrasound (TUS).

[0003] A common feature of existing biopsy needles is that the puncture depth cannot be selected during the cutting operation. This greatly limits the application range of biopsy needles, especially TBNA biopsy needles, which only have one needle extension length, making it impossible to select in clinical practice. This can lead to the inability to perform the surgery or the failure of the surgery due to excessive puncture. Utility Model Content

[0004] The purpose of this invention is to provide an endoscopic fine-needle aspiration biopsy needle to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses an endoscopic fine-tuning aspiration biopsy needle, comprising an outer sleeve and an inner core. The inner core is placed inside the outer sleeve. An outer sleeve holding member is fitted onto one end of the outer sleeve, and the outer sleeve holding member is connected to an outer sleeve fixing component. A groove is formed on one end of the inner core, and the interior of the inner core is hollow and communicates with the groove. An inner core holding member is fitted onto the other end of the inner core, and a negative pressure device connector is connected to the inner core holding member. One open end of the inner core is connected to the negative pressure device connector. A limiting component is fitted onto the core body of the inner core placed outside the outer sleeve.

[0007] Furthermore, the outer sleeve is a bendable tube.

[0008] Furthermore, the outer sleeve holding member is provided with a holding hole.

[0009] Furthermore, the fixing component includes a fastening tube connected to the outer sleeve holding member, the outer sleeve passing through the fastening tube, the outer wall of the fastening tube having an external thread, a fastening nut being threaded onto the fastening tube, the end of the fastening tube away from the outer sleeve holding member being flared, and a deformation groove being formed on the end of the fastening tube away from the outer sleeve holding member.

[0010] Furthermore, the limiting component includes a limiting collar sleeved on the inner core, and an elastic locking ring sleeved on the limiting collar. The elastic locking ring is located on one side of the inner core. The width of the end of the limiting collar away from the inner core is smaller than the width of the other end. The elastic locking ring is sleeved on the end of the limiting collar with the smaller width, and a picking member is connected to the end of the limiting collar with the smaller width.

[0011] Furthermore, the outer wall of the inner core is provided with graduations.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] This invention allows for the selection of appropriate sampling depths based on actual conditions, greatly improving the success rate of biopsy puncture sampling, reducing consumables, and minimizing harm to patients. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 This is a cross-sectional view of the endoscopic fine examination aspiration biopsy needle of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 Top view of the limiting component;

[0018] Explanation of reference numerals in the attached drawings: 1. Outer sleeve; 2. Inner core; 3. Outer sleeve holding component; 4. Groove; 5. Inner core holding component; 6. Negative pressure device connector; 7. Holding hole; 8. Fastening tube; 9. Fastening nut; 10. Deformation groove; 11. Limiting collar; 12. Elastic locking ring; 13. Pick-up component. Detailed Implementation

[0019] like Figure 1-3 As shown, an endoscopic fine-needle aspiration biopsy needle includes an outer sleeve 1 and an inner core 2, wherein the outer sleeve 1 is a bendable tube.

[0020] The inner core 2 is placed inside the outer sleeve 1, and an outer sleeve holding member 3 is sleeved on one end of the outer sleeve 1. The outer sleeve holding member 3 has a holding hole 7.

[0021] The outer sleeve holding member 3 is connected to the outer sleeve 1 fixing assembly. The fixing assembly includes a fastening tube 8 connected to the outer sleeve holding member 3. The outer sleeve 1 passes through the fastening tube 8. The outer wall of the fastening tube 8 is provided with external threads. A fastening nut 9 is threadedly connected to the fastening tube 8. The end of the fastening tube 8 away from the outer sleeve holding member 3 is flared, and a deformation groove 10 is provided on the end of the fastening tube 8 away from the outer sleeve holding member 3.

[0022] The inner core 2 is placed on one end of the outer sleeve 1 and has a groove 4. The interior of the inner core 2 is hollow and connected to the groove 4. The other end of the inner core 2 is fitted with an inner core holding member 5. A negative pressure connector 6 is connected to the inner core holding member 5. One open end of the inner core 2 is connected to the negative pressure connector 6.

[0023] The inner core 2 is placed on the core body outside the outer sleeve 1 and a limiting component is fitted on it. The limiting component includes a limiting collar 11 fitted on the inner core 2, and an elastic locking ring 12 fitted on the limiting collar 11. The elastic locking ring 12 is located on one side of the inner core 2. The width of the end of the limiting collar 11 away from the inner core 2 is smaller than the width of the other end. The elastic locking ring 12 is fitted on the narrower end of the limiting collar 11, and a picking member 13 is connected to the narrower end of the limiting collar 11.

[0024] The outer wall of the inner core 2 is provided with a scale.

[0025] The operation process of this utility model is as follows:

[0026] In use, insert the outer sleeve 1 into the endoscope tube, then extend the end of the outer sleeve 1 to the location where sampling is required. Then, turn the fastening nut 9 to compress the end of the fastening tube 8 and fix the outer sleeve 1 in position. Then, insert the inner core 2 into the outer sleeve 1, so that the end of the inner core 2 protrudes from the outer sleeve 1. Select the required sampling depth, then pull the pick-up piece 13 to pull the limiting collar 11 to the depth distance of the inner core 2 outside the outer sleeve 1, so that the elastic locking ring 12 fixes the limiting collar 11 on the inner core 2. Then, push and pull the inner core holding piece 5 to make the groove 4 on the inner core 2 match the inner wall of the outer sleeve 1, and store the cut sample in the inner core 2. Repeat the pushing and pulling and sampling multiple times. After sampling is completed, take the inner core 2 out of the outer sleeve 1, and then push the sample out and place it on the slide using the negative pressure device.

[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An endoscopic fine needle aspiration biopsy needle, characterized by: The utility model provides a kind of outer sleeve (1) and inner core (2) including, the inner core (2) is placed in the outer sleeve (1), outer sleeve (1) one end is equipped with outer sleeve holding member (3), and outer sleeve holding member (3) is connected with outer sleeve (1) fixed assembly;The inner core (2) is placed in the outer sleeve (1) one end and is equipped with cutting groove (4), the inside of the inner core (2) is hollow and is connected with the cutting groove (4), and the other end of the inner core (2) is equipped with inner core holding member (5), and inner core holding member (5) is connected with negative pressure ware connector (6), and the opening one end of the inner core (2) is connected with the negative pressure ware connector (6), and the inner core (2) is placed in the outer sleeve (1) outside and is equipped with limiting assembly on core body.

2. The endoscopic biopsy needle of claim 1, wherein: The outer sleeve (1) is a bendable tube.

3. The endoscopic biopsy needle of claim 1, wherein: The outer sleeve holding member (3) is provided with a holding hole (7).

4. The endoscopic biopsy needle of claim 1, wherein: The fixed assembly includes a fastening tube (8) connected to the outer sleeve holding member (3), the outer sleeve (1) passes through the fastening tube (8), the outer wall of the fastening tube (8) is provided with external threads, the fastening tube (8) is threadedly connected with a fastening nut (9), the end of the fastening tube (8) away from the outer sleeve holding member (3) is flared, and the end of the fastening tube (8) away from the outer sleeve holding member (3) is provided with a deformation groove (10).

5. The endoscopic biopsy needle of claim 1, wherein: The limiting assembly includes a limiting sleeve ring (11) sleeved on the inner core (2), the limiting sleeve ring (11) is sleeved with an elastic locking ring (12), the elastic locking ring (12) is placed on one side of the inner core (2), the end of the limiting sleeve ring (11) away from the inner core (2) is smaller than the other end in width, the elastic locking ring (12) is sleeved on the end of the limiting sleeve ring (11) with smaller width, and the end of the limiting sleeve ring (11) with smaller width is connected with a taking member (13).

6. The endoscopic biopsy needle of claim 5, wherein: The outer wall of the inner core (2) is provided with a scale.

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