Ultrasonic biopsy device
By integrating a hollow needle tube with a needle core and setting a cell brush on the needle core, the ultrasonic biopsy device solves the problem of insufficient collection of small lesion tissue and achieves a more comprehensive cell biopsy effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANREI MEDICAL HZ
- Filing Date
- 2024-12-25
- Publication Date
- 2026-04-24
AI Technical Summary
Existing ultrasound puncture needles are prone to detaching lesions or producing small amounts of exudate when sampling small lesions, and it is difficult to collect enough lesion tissue for cell biopsy.
Design an ultrasonic biopsy device that integrates a hollow needle tube with a needle core and sets a cell brush on the needle core. The cell brush is used to repeatedly rub the lesion area to perform brushing and sampling, and combined with a negative pressure device to aspirate lesion tissue or exudate.
This increased the amount of diseased tissue or exudate collected, ensuring better cell biopsy results for more diseased tissue.
Smart Images
Figure CN224155688U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of endoscopic ultrasound biopsy equipment, specifically to an ultrasound biopsy device. Background Technology
[0002] Endoscopic ultrasound biopsy is a technique that uses an ultrasonic puncture needle to penetrate the wall of the gastrointestinal tract during endoscopic ultrasound examination. The routine procedure involves advancing a thin needle into the lesion to obtain a tissue sample for pathological analysis and biopsy.
[0003] However, in practice, conventional puncture sampling techniques may not be suitable for very small lesions. This is because the extraction process can only collect lesion tissue near the puncture site, but since the lesions are very small, the amount of lesion tissue or exudate detached during the puncture process is also very small, and a large amount of useless non-lesion tissue is easily collected during the extraction process. Therefore, there is a need to design an instrument with more comprehensive sampling and biopsy functions. Utility Model Content
[0004] To address the technical problems of existing ultrasonic puncture needles with usage defects, this utility model provides an ultrasonic biopsy device that improves upon the traditional ultrasonic biopsy needle by integrating a hollow needle tube and a needle core, and setting a cell brush on the needle core. If the amount of lesion tissue or exudate detached from the hollow needle tube during puncture is insufficient, the cell brush exposed outside the needle tip can be used to repeatedly rub the lesion area for brushing and sampling, thereby collecting more lesion tissue for cell biopsy.
[0005] The technical solution provided by this utility model is as follows: an ultrasonic biopsy device, comprising a handle, a hollow needle tube, a three-way Luer connector, and a needle core; the handle is hollow, and the hollow needle tube is fixed to one end of the handle and communicates with the interior of the handle; the three-way Luer connector includes a first connecting section, a second connecting section, and a third connecting section, the first connecting section communicating with the end of the handle opposite to the hollow needle tube, and the second connecting section being used to connect to a negative pressure device; a connecting cap is fixedly provided at one end of the needle core, the connecting cap being sleeved on the outside of the third connecting section and slidingly engaging with the outer wall of the third connecting section, and the needle core being located inside the third connecting section, the first connecting section, the handle, and the hollow needle tube; multiple clusters of cell brushes are fixedly provided on the other end of the needle core, and a through hole is provided at the end of the hollow needle tube, at least a portion of the cell brushes passing through the through hole and exposed on the outside of the hollow needle tube.
[0006] Optionally, some of the cell brushes are arranged around the circumference of the needle core to form a circumferential bristle group, the circumferential bristle group being continuously arranged along the length of the needle core.
[0007] Optionally, the axial length of the area on the needle core where the cell brush is provided is L, and the length of the through hole along the axial direction of the needle core is D, satisfying L≥2D.
[0008] Optionally, the length D of the through hole along the axial direction of the needle core is 0.3-0.5 mm.
[0009] Optionally, at least two clusters of the cell brushes simultaneously pass through one of the through-holes and are exposed to the outside of the hollow needle.
[0010] Optionally, the spacing between two adjacent clusters of cell brushes along the length of the needle core is less than the length of the cell brushes.
[0011] Optionally, the length of the cell brush is greater than or equal to 0.5 mm.
[0012] Optionally, the hollow needle tube is provided with at least two through holes.
[0013] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects: In view of the technical problem of the defects in the use of existing ultrasonic puncture needles, the ultrasonic biopsy device proposed by this utility model improves the traditional ultrasonic biopsy needle by integrating the hollow needle tube and the needle core, and setting a cell brush on the needle core. If the amount of lesion tissue or exudate detached from the hollow needle tube during the puncture process is too small, the cell brush exposed outside the needle tip can be used to repeatedly rub the lesion area for brushing and sampling, so as to collect more lesion tissue for cell biopsy. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the ultrasonic biopsy device proposed in an embodiment of the present invention.
[0015] Figure 2 This is a cross-sectional view of the ultrasonic biopsy device proposed in an embodiment of the present invention.
[0016] Figure 3 for Figure 2 Enlarged diagram of point A in the middle.
[0017] Figure 4 This is a schematic diagram of the needle core structure proposed in an embodiment of the present invention.
[0018] Figure 5 This is a schematic diagram of the end structure of the hollow needle tube proposed in an embodiment of the present invention.
[0019] Figure 6 This is a schematic diagram illustrating the fit between the hollow needle tube and the needle core as proposed in an embodiment of this utility model.
[0020] Figure 7 This is a schematic diagram of the operation of the ultrasonic biopsy device proposed in the embodiment of this utility model. Detailed Implementation
[0021] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings and embodiments.
[0022] The present application will be further described in detail below with reference to the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings. The terms "first," "second," etc., used in this utility model are provided for the convenience of describing the technical solution of this utility model and have no specific limiting effect; they are all general terms and do not constitute a limitation on the technical solution of this utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of this application can be combined with each other. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Multiple technical solutions in the same embodiment, as well as multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not contradict or conflict, all of which are within the scope of protection claimed by this utility model.
[0023] Combined with appendix Figure 1-6 An ultrasonic biopsy device according to this embodiment includes a handle 1, a hollow needle tube 2, a three-way Luer connector 3, and a needle core 4. The handle 1 is hollow, and the hollow needle tube 2 is fixed to one end of the handle 1 and communicates with the interior of the handle 1. The three-way Luer connector 3 includes a first connecting section 31, a second connecting section 32, and a third connecting section 33. The first connecting section 31 communicates with the end of the handle 1 opposite to the hollow needle tube 2, and the second connecting section 32 is used to connect to a negative pressure device.
[0024] A connecting cap 5 is fixedly provided at one end of the needle core 4. The connecting cap 5 is sleeved on the outside of the third connecting segment 33 and slides against the outer wall of the third connecting segment. The needle core 4 is located inside the third connecting segment 33, the first connecting segment 31, the handle 1, and the hollow needle tube 2. Multiple clusters of cell brushes 6 are fixedly provided at the other end of the needle core 4. A through hole 20 is provided at the end of the hollow needle tube 2, and at least a portion of the cell brushes 6 pass through the through hole 20 and are exposed on the outside of the hollow needle tube 2.
[0025] Based on the above structural description of the ultrasound biopsy device in this embodiment, its working principle is as follows: When it is necessary to sample small lesions outside the digestive tract wall or natural body cavities, firstly, ensure that the needle core 4 is completely inside the hollow needle tube 2, that is, the end of the needle core 4 does not extend beyond the end of the hollow needle tube 2. Then, under the guidance of the ultrasound endoscope, control the hollow needle tube 2 to puncture the designated lesion tissue. After the puncture is completed and the position of the end of the hollow needle tube 2 is completely determined, push and pull the connecting cap 5. The sliding of the connecting cap 5 causes the cell brush 6 exposed outside the through hole 20 to move. The cell brush 6 thus repeatedly rubs inside the human tissue, and the lesion tissue or exudate will adhere to the cell brush 6. At this time, the lesion tissue or exudate can be directly aspirated, or it can be withdrawn from the body as a whole along with the hollow needle tube 2 and the needle core 4.
[0026] When direct aspiration of lesion tissue or exudate is required, the negative pressure device must be activated. The negative pressure device provides negative pressure to the ultrasonic biopsy device via the three-way Luer connector 3, as shown in the attached diagram. Figure 7 As shown, at this time, negative pressure will be formed near the through hole 20 and at the end of the hollow needle tube 2 to absorb the diseased tissue or exudate, and the diseased tissue or exudate can be drawn out of the body.
[0027] It should be noted that when aspirating lesion tissue, it is necessary to ensure the connection between the hollow needle tube 2 and the three-way Luer seat 3. In this embodiment, the hollow needle tube 2 is fixed to one end of the handle 1 and is connected to the inside of the handle 1. The first connecting section 31 is connected to the end of the handle 1 away from the hollow needle tube 2. Specifically, the hollow needle tube 2 is connected to the three-way Luer seat 3 through the connecting structure such as the tube or cavity inside the handle 1.
[0028] To ensure that the lesion tissue or exudate is withdrawn from the body along with the hollow needle tube 2 and the needle core 4, the needle core 4 should be pulled back after the cell brush 6 has finished rubbing and brushed enough lesion tissue or exudate into the hollow needle tube 2. This ensures that the cell brush 6 is completely withdrawn into the hollow needle tube 2 and returns to its initial state. Then, the hollow needle tube 2 and the needle core 4 can be withdrawn from the body together for sampling and pathological analysis.
[0029] In a preferred embodiment, some of the cell brushes 6 are arranged around the circumference of the needle core 4 to form a circumferential bristle group, which is continuously arranged along the length of the needle core 4. This embodiment achieves a dense and orderly arrangement of the cell brushes 6, ensuring the density of the cell brushes 6 and thus further improving the friction brushing inspection effect of the cell brushes 6.
[0030] In another preferred embodiment, the axial length of the area on the needle core 4 where the cell brush 6 is located is L, and the length of the through hole 20 along the axial direction of the needle core 4 is D, satisfying L≥2D. In this embodiment, the range of the area where the cell brush 6 is located is further designed so that when L≥2D, it can be ensured that during repeated pushing and pulling of the connecting cap 5, the cell brush 6 is always exposed outside the through hole 20 for friction brushing inspection of the lesion tissue.
[0031] In a further embodiment, the length D of the through hole 20 along the axial direction of the needle core 4 is 0.3-0.5 mm. This ensures that the through hole 20 has sufficient size to ensure that the brush is fully exposed outside the hollow needle tube 2.
[0032] As can be imagined, the through hole 20 can be of any shape, for example, it can be an attachment. Figure 5 The circular hole structure shown can also be a square hole, an elliptical hole, a saddle-shaped hole, a waist-shaped hole, or any other regular or irregular shape.
[0033] To ensure the effectiveness of the cell brush 6 in sampling diseased tissue, in a preferred embodiment, at least two clusters of cell brushes 6 must simultaneously pass through a through-hole 20; that is, at least two clusters of cell brushes 6 should be exposed on the outside of the hollow needle tube 2 at the same time. This density design of the cell brushes 6 in this embodiment better achieves the desired friction sampling effect.
[0034] Similar to the above embodiments, multiple through holes 20 can also be provided on the hollow needle tube 2, that is, at least two through holes 20 can be provided on the hollow needle tube 2. Multiple through holes 20 can all allow one or more clusters of cell brushes 6 to be exposed outside the hollow needle tube 2, thereby realizing synchronous friction brushing inspection of multiple clusters of brushes, thereby improving the sampling effect.
[0035] To preserve as much diseased tissue or exudate as possible on the cell brush 6, in a preferred embodiment, the distance between two adjacent clusters of cell brushes 6 along the length of the needle core 4 is less than the length of the cell brush 6. Therefore, when the cell brushes 6 are retracted into the hollow needle tube 2, they overlap front to back. Maintaining an appropriate distance between the front and back cell brushes 6 in this embodiment ensures sufficient space within the hollow needle tube 2 to accommodate the cell tissue.
[0036] Furthermore, in an alternative embodiment, the length of the cell brush 6 can be controlled to be greater than or equal to 0.5 mm in order to brush away as much diseased tissue or exudate as possible, while at the same time retaining as much diseased tissue or exudate as possible through the gaps in the cell brush 6.
[0037] In summary, in response to the technical problems of existing ultrasonic puncture needles, the ultrasonic biopsy device of this embodiment improves upon the traditional ultrasonic biopsy needle by integrating the hollow needle tube 2 and the needle core 4, and setting a cell brush 6 on the needle core 4. If the amount of lesion tissue or exudate detached from the hollow needle tube 2 during the puncture process is insufficient, the cell brush 6 exposed outside the needle tip can be used to repeatedly rub the lesion area for brushing and sampling, so as to collect more lesion tissue for cell biopsy.
[0038] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the figures shown are only one embodiment of the present invention; the actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. An ultrasonic biopsy device, characterized in that, It includes a handle (1), a hollow needle tube (2), a three-way Luer connector (3), and a needle core (4); The handle (1) is hollow, and the hollow needle tube (2) is fixed to one end of the handle (1) and communicates with the interior of the handle (1); the three-way Luer seat (3) includes a first connecting section (31), a second connecting section (32) and a third connecting section (33), the first connecting section (31) is connected to the end of the handle (1) away from the hollow needle tube (2), and the second connecting section (32) is used to connect to a negative pressure device; A connecting cap (5) is fixedly provided at one end of the needle core (4). The connecting cap (5) is sleeved on the outside of the third connecting section (33) and slides in cooperation with the outer wall of the third connecting section. The needle core (4) is located inside the third connecting section (33), the first connecting section (31), the handle (1) and the hollow needle tube (2). Multiple clusters of cell brushes (6) are fixedly disposed on the other end of the needle core (4), and a through hole (20) is provided at the end of the hollow needle tube (2), at least part of the cell brushes (6) pass through the through hole (20) and are exposed on the outside of the hollow needle tube (2).
2. The ultrasonic biopsy device according to claim 1, characterized in that, Some of the cell brushes (6) are arranged around the circumference of the needle core (4) to form a circumferential bristle group, which is continuously arranged along the length of the needle core (4).
3. The ultrasonic biopsy device according to claim 1, characterized in that, The axial length of the area on the needle core (4) where the cell brush (6) is provided is L, and the length of the through hole (20) along the axial direction of the needle core (4) is D, satisfying L≥2D.
4. The ultrasonic biopsy device according to claim 3, characterized in that, The length D of the through hole (20) along the axial direction of the needle core (4) is 0.3-0.5 mm.
5. The ultrasonic biopsy device according to claim 1, characterized in that, At least two clusters of the cell brushes (6) simultaneously pass through one of the through holes (20) and are exposed to the outside of the hollow needle tube (2).
6. The ultrasonic biopsy device according to claim 1, characterized in that, The spacing between two adjacent clusters of cell brushes (6) along the length direction of the needle core (4) is less than the length of the cell brushes (6).
7. An ultrasonic biopsy device according to claim 1 or 6, characterized in that, The length of the cell brush (6) is greater than or equal to 0.5 mm.
8. The ultrasonic biopsy device according to claim 1, characterized in that, The hollow needle tube (2) is provided with at least two through holes (20).