Shark mouth type sampling device and multi-blade surface needle tip

Abstract

The invention provides a shark mouth type sampling device and a multi-blade-face needle tip, the shark mouth type sampling device comprises a handle assembly, a guide assembly, a multi-blade-face needle tip and a suction assembly, the multi-blade-face needle tip is detachably installed on the handle assembly through the guide assembly and penetrates through the head and the tail of the handle assembly, and the suction assembly is detachably installed on the handle assembly through the guide assembly. The suction assembly is detachably installed at the tail end of the handle assembly and communicated with the multi-blade-face needle point, the head end of the multi-blade-face needle point is provided with a plurality of cutting needles, a plurality of cutting blades and a plurality of cutting openings to form a plurality of blade faces, and the multi-blade-face needle point is operated through the handle assembly to cut tissue from multiple directions. Then the sampling tissue strips obtained through cutting are sucked out under the negative pressure effect of the suction assembly, the obtained sample tissue is complete and large in amount, cutting is efficient, and the operation time is shortened.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a shark mouth-type sampling device and a multi-bladed needle tip. Background Technology

[0002] Biopsy sampling is a crucial technique for obtaining living tissue for pathological examination, and it is essential for disease diagnosis, classification, and treatment. In clinical medical diagnosis, the accurate assessment of digestive and respiratory system diseases relies heavily on effective sampling of lesions and subsequent laboratory analysis. However, traditional sampling procedures not only cause significant physical discomfort and psychological fear for patients, but also have blind spots, with limitations in sampling depth and volume, which may fail to fully reflect the pathological state of the tissue.

[0003] Currently, widely used clinical biopsy systems include core needle biopsy and vacuum-assisted biopsy systems. However, the needle tips of commonly used sampling devices are divided into two types: single-pointed and equal-length triangular-pointed. Single-pointed sampling needles are mainly used for fine-needle aspiration biopsy. They have a simple structure and are hollow fine needles with beveled tips. They can only obtain cytological samples (dispersed cell populations or cell smears) and cannot obtain histological samples (complete strips of tissue). This makes it difficult for pathologists to observe tissue structures, thus limiting the accuracy and breadth of diagnosis, making it difficult to accurately classify or grade tumors, and resulting in a relatively high false negative rate. While the equal-length trident sampling device offers advantages in tissue fixation and slippage prevention, it also has significant disadvantages, primarily including: 1. High puncture resistance: The simultaneous insertion of a single, parallel serration into the tissue creates considerable initial resistance, requiring the operator to apply greater force, increasing the difficulty of the procedure, and increasing the risk of needle bending; 2. Relatively large tissue trauma: The insertion of the trident needle is equivalent to "tearing" rather than "cutting," resulting in extensive damage to subcutaneous tissue, muscles, blood vessels, and nerves, and a higher risk of bleeding; 3. Limited sample volume and integrity: During sample collection, the low cutting force can lead to rupture, deformation, or mechanical damage to the obtained tissue strips, affecting the pathologist's observation and diagnosis of the tissue structure. Therefore, the aforementioned needle tip suffers from drawbacks such as high operational resistance, significant tissue trauma, incomplete sample collection affecting the accuracy of disease diagnosis, and even the need for repeated sampling, causing considerable harm to the patient.

[0004] Therefore, traditional sampling methods are the cornerstone of disease screening, diagnosis, and treatment. However, existing technologies still have many limitations, leading to poor patient experience, low sampling efficiency, and even insufficient diagnostic accuracy. In other words, current sampling technologies and devices present a trade-off between sample integrity, ease of operation, and patient trauma. Therefore, there is an urgent need in this field for a novel sampling device that can minimize patient pain and trauma, reduce operational difficulty and dependence on a specialized environment, and improve sampling accuracy and consistency without sacrificing sample quality, thus adapting to the different clinical sampling needs of the digestive and respiratory systems. Summary of the Invention

[0005] One advantage of this invention is that it provides a shark mouth-type sampling device and a multi-faceted needle tip, wherein the shark mouth-type multi-faceted needle tip has multiple cutting surfaces, has good cutting ability, and can efficiently and accurately obtain high-quality and complete tissue samples, while also having the advantages of being minimally invasive and easy to operate.

[0006] Another advantage of the present invention is that it provides a shark mouth-type sampling device and a multi-bladed needle tip, which can minimize the patient's pain and trauma without sacrificing the sampling quality, avoid the patient's need for secondary or multiple punctures, and reduce the patient's pain.

[0007] Another advantage of the present invention is that it provides a shark mouth-shaped sampling device and a multi-faceted needle tip, wherein the shark mouth-shaped multi-faceted needle tip includes three tips of different sizes and multiple sharp cutting surfaces, which can obtain more tissue volume in clinical practice.

[0008] Another advantage of this invention is that it provides a shark mouth-shaped sampling device and a multi-bladed needle tip. The complete tissue is obtained by cutting with the needle tip and then extracting it under negative pressure, which maximizes the preservation of tissue integrity, obtains high-quality samples, sufficient sample quantity, and high diagnostic value, and can ensure the accuracy of disease detection.

[0009] Another advantage of the present invention is that it provides a shark mouth-type sampling device and a multi-bladed needle tip, which has good sealing performance, good negative pressure suction effect, and can obtain complete tissue samples with high efficiency.

[0010] Another advantage of this invention is that it provides a shark mouth-type sampling device and a multi-bladed needle tip, which cuts and samples with multiple blades, and then uses negative pressure suction to effectively eliminate the problem of tissue slippage and avoid damage to the tissue caused by squeezing, tearing and other factors.

[0011] Another advantage of this invention is that it provides a shark mouth-type sampling device and a multi-bladed needle tip, which is simple to operate, produces high-quality samples, is highly efficient, causes less trauma, and has a wide range of applications.

[0012] According to one aspect of the present invention, a multi-bladed needle tip is provided, comprising: One main body; A cutting section is disposed at the top end of the main body. The cutting section has at least three cutting edges, at least three cutting slits, and at least three cutting needles. Each cutting edge and each cutting slit is located between two adjacent cutting needles, and each pair of adjacent cutting needles is separated by the cutting slit. A collection channel is provided in the main body and extends to the cutting part, through which the sampled tissue strips cut by the cutting part are collected.

[0013] The multi-faceted needle tip also includes at least three cutting surfaces, with the cutting edge disposed at the top of the cutting surface and extending to the top of two adjacent cutting needles. The area between the two adjacent cutting needles and the cutting edge forms the cutting opening.

[0014] The cutting surface extends from the cutting edge toward the main body, and the thickness of the cutting surface gradually increases toward the main body.

[0015] Each of the cutting needles includes a cutting tip and a cutting tail, the cutting tail extending from the cutting tip to the main body, and the size of the cutting tip is smaller than the size of the cutting tail.

[0016] The cut is U-shaped or V-shaped.

[0017] The number of the cutting needle, the cutting blade, and the cutting opening are all three. The three cutting needles form a structure of one large and two small, and the three cutting openings have different longitudinal depths.

[0018] According to another aspect of the present invention, the present invention also provides a shark mouth-type sampling device, comprising: One handle assembly; One guiding component; A multi-faceted needle tip, detachably mounted to the handle assembly via the guide assembly, and extending through the head and tail of the handle assembly; and A suction assembly is detachably mounted on the tail end of the handle assembly and communicates with the multi-bladed needle tip. The head end of the multi-bladed needle tip has multiple cutting needles, multiple cutting edges, and multiple cutting openings to form multiple cutting surfaces. The multi-bladed needle tip is operated by the handle assembly to cut tissue from multiple directions, and then the cut tissue strip is sucked out under the negative pressure of the suction assembly.

[0019] The shark mouth sampling device further includes a needle core wire, which is detachably sleeved inside the multi-faceted needle tip, so that the tip of the multi-faceted needle tip fits against the outside of the needle core wire, guiding the multi-faceted needle tip to puncture into the sampling tissue area.

[0020] The multi-bladed needle tip includes a cutting section, a main body, and a collection channel. The main body is connected to the cutting section. The cutting section has at least three cutting blades, at least three cutting openings, and at least three cutting needles. The cutting blades, cutting openings, and cutting needles are spaced apart. The collection channel is located in the main body and extends to the cutting section. The sampled tissue strips cut by the cutting section are aspirated through the collection channel under the negative pressure of the suction assembly.

[0021] The multi-faceted needle tip further includes at least three cutting surfaces, with the cutting edge disposed at the top of the cutting surface and extending to the top of two adjacent cutting needles, the area between the two adjacent cutting needles and the cutting edge forming the cut. Attached Figure Description

[0022] Figure 1 This is a cross-sectional schematic diagram of a shark mouth sampling device according to a preferred embodiment of the present invention.

[0023] Figure 2 This is a partial structural schematic diagram of the shark mouth sampling device according to the preferred embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional schematic diagram of the shark mouth sampling device connected to the suction assembly according to the above-described preferred embodiment of the present invention.

[0025] Figure 4 This is an exploded structural diagram of the shark mouth sampling device according to the above-described preferred embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the structure of the multi-bladed needle tip according to a preferred embodiment of the present invention.

[0027] Figure 6 This is a cross-sectional schematic diagram of the multi-faceted needle tip according to the above-described preferred embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the cutting portion of the multi-bladed needle tip according to the above-described preferred embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the cutting portion of the multi-bladed needle tip according to the above-described preferred embodiment of the present invention from another perspective.

[0030] Figure 9 This is a partial structural diagram of the front end of the shark mouth sampling device according to the preferred embodiment of the present invention.

[0031] Figure 10 This is a schematic diagram of a modified embodiment of the multi-bladed needle tip according to a preferred embodiment of the present invention.

[0032] Figure 11 This is a schematic diagram of another modified embodiment of the multi-faceted needle tip according to a preferred embodiment of the present invention.

[0033] Figure 12 This is a schematic diagram of another modified embodiment of the multi-bladed needle tip according to a preferred embodiment of the present invention. Detailed Implementation

[0034] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0035] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the invention 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. Therefore, the above terms should not be construed as limiting the invention.

[0036] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0037] Reference Appendix Figure 1 To be continued Figure 4As shown, a shark mouth-type sampling device and a multi-faceted needle tip according to a preferred embodiment of the present invention are illustrated. In this embodiment, the shark mouth-type sampling device includes a handle assembly 10, a suction assembly 20, a guide assembly 30, a multi-faceted needle tip 40, and a needle core wire 50. The needle core wire 50 is detachably sleeved inside the multi-faceted needle tip 40. The multi-faceted needle tip 40 is mounted on the handle assembly 10 through the guide assembly 30. The multi-faceted needle tip 40 passes through both ends of the handle assembly 10 and is detachably connected to the suction assembly 20 at the tail end of the handle assembly 10. Guided by the needle core wire 50, the multi-bladed needle tip 40 is inserted into the human body along with the needle core wire 50 and reaches the target sampling tissue area by operating the handle assembly 10 and the guide assembly 30. Then, the needle core wire 50 is pulled out from the rear end, and the suction assembly 20 is connected to the end of the multi-bladed needle tip 40. Then, the handle assembly 10 is operated so that the front end of the multi-bladed needle tip 40 cuts the tissue. The cut tissue strip is drawn out under the negative pressure of the suction assembly 20 and then biopsy is performed.

[0038] The guide assembly 30 includes a guide tube 31 and an outer tube 32. The guide tube 31 is disposed at the rear of the outer tube, and the outer tube 32 is disposed at the front end of the guide tube 31, connecting the multi-bladed needle tip 40 to the guide tube 31. Thus, the multi-bladed needle tip 40 is fixed to the front end of the handle assembly 10 through the outer tube 32 and the guide tube 31, facilitating the operation of the multi-bladed needle tip 40 to cut tissue.

[0039] The handle assembly 10 includes a grip portion 11, an operating portion 12, a connecting portion 13, a connecting head 14, a connecting tail 16, and a sealing member 17. The grip portion 11 is disposed between the connecting tail 16 and the operating portion 12 so that it can be flexibly operated with fingers when held with both hands. The connecting portion 13 is disposed between the operating portion 12 and the connecting head 14. The guide tube 31 is connected to the connecting head. The sealing member 17 is detachably disposed on the connecting tail 16.

[0040] The handle assembly 10 also has an installation channel 15 that extends through the connecting head 14 and the connecting tail 16. A seal 17 is detachably sealed at the connecting tail 16 to the installation channel 15. After removing the seal 17, the aspiration assembly 20 is detachably connected to the connecting tail 16. Since the multi-faceted needle tip 40 and the needle core wire 50 are detachably installed in the installation channel 15, when the aspiration assembly 20 is connected, it communicates with the multi-faceted needle tip 40, allowing the sampling tissue strip cut from the tip of the multi-faceted needle tip 40 to be aspirated for biopsy under negative pressure.

[0041] The multi-faceted needle tip 40 is shark-mouth shaped, comprising multiple cutting blades, multiple cutting surfaces, multiple cutting needles, and multiple cutting openings. These blades, surfaces, needles, and openings are spaced apart, with each blade positioned at the tip of a corresponding cutting surface and extending to the tips of two adjacent cutting needles. The notch between the blade and the adjacent needles forms the cutting opening, facilitating the cutting of tissue into sample tissue strips by the cutting needles and the cutting blades. The multiple blades, surfaces, needles, and openings form a shark-mouth-like needle tip with multiple cutting surfaces, simultaneously cutting tissue to obtain complete sample tissue strips. The sharp cutting surfaces allow for rapid and efficient cutting of complete sample tissue strips, ensuring efficient and complete sampling, avoiding multiple punctures, and reducing harm to the body.

[0042] Specifically, see the attached document. Figure 5 To be continued Figure 8 As shown, the multi-bladed needle tip includes a cutting section 41, a main body 42, and a collection channel 43. The main body 42 is disposed at the rear end of the cutting section 41, and the collection channel 43 is disposed inside the main body 42 and extends to the cutting section 41. After the cutting section 41 cuts off the tissue strip, the tissue strip is drawn out by negative pressure through the collection channel 43 and collected for subsequent testing.

[0043] The cutting section 41 includes a first cutting needle 411, a second cutting needle 412, and a third cutting needle 413. The first cutting needle 411, the second cutting needle 412, and the third cutting needle 413 are disposed at intervals at the ends of the main body section 42. The first cutting needle 411, the second cutting needle 412, and the third cutting needle 413 have a tapering structure from the bottom end to the tip end. The first cutting needle 411 and the second cutting needle 412 are of equal size, and the third cutting needle 413 is larger than the first cutting needle 411 and the second cutting needle 412.

[0044] It is worth mentioning that the first cutting needle 411 includes a first cutting tip 4111 and a first cutting tail 4112. The first cutting tip 4111 is connected to the top of the first cutting tail 4112. The first cutting tail 4112 extends from the main body 42 to the first cutting tip 4111. The first cutting tip 4111, the first cutting tail 4112, and the main body 42 are integrally formed. The second cutting needle 412 includes a second cutting tip 4121 and a second cutting tail 4122. The second cutting tip 4121 is connected to the top of the second cutting tail 4122. The second cutting tail 4122 extends from the main body 42 to the second cutting tip 4121. The second cutting tip 4121, the second cutting tail 4122, and the main body 42 are integrally formed. The third cutting needle 413 includes a third cutting tip 4131 and a third cutting tail 4132. The third cutting tip 4131 is connected to the top of the third cutting tail 4132. The third cutting tail 4132 extends from the main body 42 to the third cutting tip 4131. The third cutting tip 4131, the third cutting tail 4132 and the main body 42 are integrally formed.

[0045] The cutting section 41 also has a first cutting surface 414, a second cutting surface 415 and a third cutting surface 416. The first cutting surface 414, the second cutting surface 415 and the third cutting surface 416 are disposed at intervals at the end of the main body section 42, and the first cutting surface 414, the second cutting surface 415, the third cutting surface 416 and the first cutting needle 411, the second cutting needle 412 and the third cutting needle 413 are disposed at intervals.

[0046] The first cutting surface 414 is disposed between the first cutting needle 411 and the second cutting needle 412, the second cutting surface 415 is disposed between the second cutting needle 412 and the third cutting needle 413, and the third cutting surface 416 is disposed between the third cutting needle 413 and the first cutting needle 411. In other words, the inner and outer walls of the first cutting needle 411, the second cutting needle 412, and the third cutting needle 413 all extend upward from the inner and outer walls of the main body 42, and the first cutting surface 414, the second cutting surface 415, and the third cutting surface 416 are all located on the outer wall of the main body 42. This is equivalent to the outer wall of the main body 42 being thinned to form the first cutting surface 414, the second cutting surface 415, and the third cutting surface 416, whose thickness gradually increases from top to bottom.

[0047] The cutting section 41 further includes a first cutting blade 417, a second cutting blade 418, and a third cutting blade 419. The first cutting blade 417 is disposed on the top of the first cutting surface 414 and extends upward at both ends to the first cutting needle 411 and the second cutting needle 412. The second cutting blade 418 is disposed on the surface of the second cutting surface 415 and extends upward at both ends to the second cutting needle 412 and the third cutting needle 413. The third cutting blade 419 is disposed on the third cutting surface 416 and extends at both ends to the third cutting needle 413 and the first cutting needle 411. It extends upward along the side of the third cutting needle 413 to the top of the third cutting tip 4131, and on the other side extends along the side of the first cutting needle 411 to the top of the first cutting tip 4111.

[0048] The multi-faceted needle tip 40 further includes a first cutting opening 401, a second cutting opening 402, and a third cutting opening 403. The first cutting tip 4111, the second cutting tip 4121, and the first cutting edge 417 are located on three sides of the first cutting opening 401, forming a first cutting opening 401 with its top open to the outside. The second cutting tip 4121, the third cutting tip 4131, and the second cutting edge 418 are located on three sides of the second cutting opening 402, forming a second cutting opening with its top open to the outside. The third cutting tip 4131, the first cutting tip 4111, and the third cutting edge 419 are located on three sides of the third cutting opening 403, forming a third cutting opening with its top open to the outside.

[0049] In this embodiment, the first cutting blade 417, the second cutting blade 418, and the third cutting blade 419 are all U-shaped structures, the first cutting opening 401, the second cutting opening 402, and the third cutting opening 403 are also U-shaped structures, and the cross-sections of the first cutting surface 414, the second cutting surface 415, and the third cutting surface 416 are also U-shaped structures.

[0050] In this embodiment, the first cutting needle 411 and the second cutting needle 412 are relatively small, while the third cutting needle 413 is relatively large. Structurally, the first cutting needle 411 and the second cutting needle 412 are positioned opposite the third cutting needle 413, that is, the first cutting needle 411, the second cutting needle 412, and the third cutting needle 413 correspond to each other. The width of the third cutting tail end 4132 is equal to the sum of the widths of the first cutting tail end 4112 and the second cutting tail end 4122. Furthermore, the height of the first cutting surface 414 is greater than the height of the second cutting surface 415 and the third cutting surface 416, making the size of the first cutting opening 401 smaller than the size of the second cutting opening 402 and the third cutting opening 403. In other words, the width and depth of the first cutting opening 401 are both smaller than the width and depth of the second cutting opening 402 and the third cutting opening 403. This results in the first cutting blade 417 being positioned closer to the top of the needle tip, while the second cutting blade 418 and the third cutting blade 419 are both located behind the first cutting blade 417, forming three needle tips with different cutting positions and a structure of one large and two small tips. In other words, during the cutting process, the first cutting tip 4111, the second cutting tip 4121, and the third cutting tip 4131 preferentially penetrate the tissue, then the first cutting blade 417 preferentially cuts, and then the second cutting blade 418 and the third cutting blade 419 further cut, thus cutting out the complete tissue. The first cutting blade 417 makes a priority cut from one side position, separating the side of the tissue strip to be sampled from other tissues. Then, the second cutting blade 418 and the third cutting blade 419 located at the bottom continue to cut simultaneously from the other two sides. This can prevent pain and tearing of the sampled tissue, and can quickly obtain a complete tissue strip.

[0051] It is worth mentioning that the first cutting tip 4111, the second cutting tip 4121 and the third cutting tip 4123 form a collection channel entrance 431 of the collection channel 43, wherein the gap formed by each pair of cutting tips is the first cutting opening 401, the second cutting opening 402 and the third cutting opening 403, and the first cutting opening 401, the second cutting opening 402 and the third cutting opening 403 are all connected to the collection channel entrance 431. In other words, the presence of the first cutting opening 401, the second cutting opening 402, and the third cutting opening 403 enables the collection channel 43 to communicate with the outside, and enables the cutting part 41 to have multiple cutting blades. That is, after the first cutting opening 401, the second cutting opening 402, and the third cutting opening 403 are cut by the first cutting needle 411, the second cutting needle 412, the third cutting needle 413, the first cutting blade 417, the second cutting blade 418, and the third cutting blade 419, they enter the collection channel inlet 431 and are then collected by negative pressure through the collection channel 43.

[0052] During the sampling process, after the cutting part 41 reaches the predetermined position, the first cutting tip 4111, the second cutting tip 4121, and the third cutting tip 4131 are inserted into the tissue to be sampled. During the insertion of the tips, the first cutting blade 417, the second cutting blade 418, and the third cutting blade 419 cut the tissue. The tissue is gradually cut by each cutting blade from the tip of the needle towards the cutting surface. The cut tissue enters the collection channel inlet 431 of the collection channel 43 through the first cutting port 401, the second cutting port 402, and the third cutting port 403, and then enters the collection channel body 432 under negative pressure, and is then taken out from the collection channel outlet 433.

[0053] During the cutting process, the first cutting blade 417, the second cutting blade 418, and the third cutting blade 419 all enter from the needle tip and cut simultaneously, which is equivalent to cutting from six sides at the same time. This allows for the cutting of complete tissue strips. In other words, the tissue strips located between the first cutting needle 41, the second cutting needle 42, and the third cutting needle 43 are completely cut into long strips, thus maximizing the preservation of tissue integrity.

[0054] In addition, because multiple surfaces are cut simultaneously, the cutting speed is faster and the operation is simpler, avoiding repeated punctures and shortening the operation time.

[0055] The first cutting surface 414, the second cutting surface 415, and the third cutting surface 416 extend from the first cutting blade 417, the second cutting blade 418, and the third cutting blade 419 toward the main body 42, respectively. Since the first cutting blade 417, the second cutting blade 418, and the third cutting blade 419 are relatively thin, they ensure sharpness and smoother cutting. However, the main body 42 is relatively thick to ensure toughness. Therefore, the thickness of the first cutting surface 414, the second cutting surface 415, and the third cutting surface 416 gradually decreases, corresponding to the outer side of the main body 42. The needle tip is sloping to ensure smooth entry and exit. The sloping structure reduces the overall size of the needle tip, minimizing damage to surrounding tissue during entry. The touched tissue is precisely cut by the first cutting blade 417, the second cutting blade 418, and the third cutting blade 419, thus being cut into sample tissue strips. The smooth central cutting surfaces 414, 415, and 416 do not damage surrounding tissue, allowing for smooth entry and withdrawal of the needle tip, avoiding friction and tearing of surrounding tissue, and minimizing harm to the patient.

[0056] Reference Appendix Figure 9 The diagram shown illustrates the structure of the multi-faceted needle tip 40 and the needle core wire 50 that are matched. Figure 9 It is understood that the needle core wire 50 is inserted into the interior of the multi-faceted needle tip 40 through the collection channel 43 and extends out from the collection channel inlet 431 of the collection channel 43. The cutting part 41 is attached to the outer side of the needle core wire 50, and the first cutting needle 411, the second cutting needle 412 and the third cutting needle 413 are all attached to the outer side of the needle core wire 50. The thinner first cutting edge 417, the second cutting edge 418 and the third cutting edge 419 are all attached to the outer wall of the needle core wire 50.

[0057] The needle wire 50 includes a needle wire body 51 and a needle wire tip 52. The needle wire tip 52 is located at the end of the needle wire body 51 and has a spherical structure. When the needle wire 50 is inserted into the outside of the multi-faceted needle tip 40, the cutting portion 41 is tightly fitted to the outside of the needle wire 50, and the needle wire tip 51 extends out of the cutting portion 41. At this time, the needle wire 50 and the multi-faceted needle tip 40 enter the tissue as a whole. The spherical needle wire tip 52 preferentially enters the tip, which can prevent the sharp first cutting needle 411, second cutting needle 412 and third cutting needle 413 from puncturing other tissues of the human body during the process of entering the target tissue, thus minimizing the harm to the human body during puncture. Furthermore, the outermost areas of the first cutting surface 414, the second cutting surface 415, and the third cutting surface 416 that contact the main body 42 are all streamlined blunt structures, which effectively prevents scratches to the human body during puncture.

[0058] Once the target tissue is reached, the needle core wire 50 is pulled out, and the tissue is cut using the sharp first cutting needle 411, the second cutting needle 412, the third cutting needle 413, and the relatively sharp first cutting edge 417, the second cutting edge 418, and the third cutting edge 418 to obtain a complete tissue sample required for biopsy.

[0059] Reference Appendix Figure 10 The image shows a second modified embodiment of the multi-bladed needle tip 40 of the present invention. In this embodiment, the cutting portion 41A and the first cutting opening 401A, the second cutting opening 402A and the third cutting opening 403A of the multi-bladed needle tip 40 are modified.

[0060] The cutting section 41A includes a first cutting needle 411A, a second cutting needle 412A, and a third cutting needle 413A. The first cutting needle 411A, the second cutting needle 412A, and the third cutting needle 413A are arranged at intervals from the first cutting opening 401A, the second cutting opening 402A, and the third cutting opening 404A, such that the first cutting opening 401A is located between the first cutting needle 411A and the second cutting needle 412A, the second cutting opening 402A is located between the second cutting needle 412A and the third cutting needle 413A, and the third cutting opening 413A is located between the third cutting needle 413A and the first cutting needle 411A.

[0061] The cutting section 41A further includes a first cutting surface 414A, a second cutting surface 415A, a third cutting surface 416A, a first cutting blade 417A, a second cutting blade 418A, and a third cutting blade 419A. The first cutting blade 417A is disposed at the top of the first cutting surface 414A and extends at both ends toward the first cutting needle 411A and the second cutting needle 412A. The second cutting blade 418A is disposed at the top of the second cutting surface 415A and extends at both ends toward the second cutting needle 412A and the third cutting needle 413A. The third cutting blade 419A is disposed at the top of the third cutting surface 416A and extends at both ends toward the third cutting needle 413A and the first cutting needle 411A.

[0062] In this embodiment, the first cutting needle 411A, the second cutting needle 412A, and the third cutting needle 413A have the same structure and size. The first cutting blade 417A, the second cutting blade 418A, and the third cutting blade 419A have the same structure and size, all resembling a U-shape. The first cutting opening 401A, the second cutting opening 402A, and the third cutting opening 403A have the same structure and shape, all resembling a U-shape, and have the same longitudinal depth and width. Those skilled in the art will understand that, under the concept of this invention, the three cutting needles can also be designed as three tips with different heights and widths, the depths and widths of the three cutting openings can be completely different, and the size and structure of the three cutting blades can also be different. Different cutting needles, different cutting blades, and different cutting openings all have multiple cutting surfaces, allowing for multi-faceted cutting during application and still obtaining complete tissue strips.

[0063] Reference Appendix Figure 11 The image shows a third modified embodiment of the multi-faceted needle tip 40 of the present invention. In this embodiment, the cutting portion 41B and the first cutting kerf 401B, second cutting kerf 402B, and third cutting kerf 403B of the multi-faceted needle tip 40 are modified. In this embodiment, the first cutting needle 411B, the second cutting needle 412B, and the third cutting needle 413B extend from the main body at even intervals to form the same needle tip structure, and the first cutting kerf 401B, the second cutting kerf 402B, and the third cutting kerf 403B are all V-shaped structures. That is, the first cutting blade 417B, the second cutting blade 418B, and the third cutting blade 419B included in the cutting portion 41B are also V-shaped structures. Those skilled in the art will understand that in the present invention, the shape of the cutting blade and the cutting kerf are not limited to the embodiments listed in the invention, and can be set to other shapes, as long as a multi-faceted cut is formed.

[0064] Reference Appendix Figure 12 As shown, a cutting part 41C of the present invention includes four cutting needles, four cutting blades, and four cutting openings. The four cutting needles include a first cutting needle 4101C, a second cutting needle 4102C, a third cutting needle 4103C, and a fourth cutting needle 4104C. The four cutting openings are respectively a first cutting opening 401C, a second cutting opening 402C, a third cutting opening 403C, and a fourth cutting opening 404C. The four cutting blades are respectively a first cutting blade 4105C, a second cutting blade 4106C, a third cutting blade 4107C, and a fourth cutting blade 4108C. The first cutting blade 4105... C and the first cutting opening 401C are both disposed between the first cutting needle 4101C and the second cutting needle 4102C. The second cutting edge 4106C and the second cutting opening 402C are both disposed between the second cutting needle 4102C and the third cutting needle 4103C. The third cutting edge 4107C and the third cutting opening 403C are both disposed between the third cutting needle 4103C and the fourth cutting needle 4104C. The fourth cutting edge 4108C and the fourth cutting opening 404C are both disposed between the fourth cutting needle 4104C and the first cutting needle 4101C.

[0065] In this embodiment, the first cutting opening 401C and the third cutting opening 403C are symmetrically arranged and equal in size, the second cutting opening 402C and the fourth cutting opening 404C are symmetrically arranged and equal in size, and the longitudinal depth of the first cutting opening 401C and the third cutting opening 403C is less than the longitudinal depth of the second cutting opening 402C and the fourth cutting opening 404C.

[0066] Four cutting needles, four cutting blades, and four cutting openings are arranged alternately to form multiple cutting surfaces, facilitating the cutting of complete tissue strips. Those skilled in the art will understand that in different embodiments of the present invention, the number of needle tips, cutting blades, and cutting openings can be three or four. Under the concept of the present invention, the number of needle tips, cutting blades, and cutting openings can also be set to other numbers, and is not limited to this embodiment.

[0067] In summary, the multi-bladed needle tip 40 provided by this invention forms multiple cutting blades, enabling simultaneous cutting of tissue from multiple directions. Each tissue segment is cut directly, avoiding damage to the tissue caused by compression or tearing, and eliminating the problem of tissue slippage. Therefore, it can obtain complete samples with excellent tissue integrity, resulting in high-quality samples with significant diagnostic value. Moreover, the multi-bladed cutting is highly efficient and simple to operate, with an extremely high sampling success rate, reducing the need for repeated punctures, shortening surgical time, and ensuring sufficient and complete tissue is obtained each time, guaranteeing the accuracy of the test.

[0068] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations or modifications may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. A multi-edged needle tip, characterized in that, include: One main body; A cutting section is provided at the top of the main body. The cutting section has at least three cutting blades, at least three cutting openings, and at least three cutting needles. Each cutting blade and each cutting opening is located between two adjacent cutting needles, and each pair of adjacent cutting needles is separated by the cutting opening. and A collection channel is provided in the main body and extends to the cutting part, through which the sampled tissue strips cut by the cutting part are collected.

2. The multi-faceted needle tip according to claim 1 further includes at least three cutting surfaces, wherein the cutting edge is disposed at the top of the cutting surface and extends to the top of two adjacent cutting needles, and the area between the two adjacent cutting needles and the cutting edge forms the cutting opening.

3. The multi-faceted needle tip according to claim 2, wherein the cutting surface extends from the cutting edge toward the main body, and the thickness of the cutting surface gradually increases toward the main body.

4. The multi-faceted needle tip according to claim 3, wherein each of the cutting needles includes a cutting tip and a cutting tail, the cutting tail extending from the cutting tip to the main body, and the size of the cutting tip is smaller than the size of the cutting tail.

5. The multi-bladed needle tip according to any one of claims 1 to 4, wherein the cutting kerf is U-shaped or V-shaped.

6. The multi-faceted needle tip according to claim 5, wherein the number of the cutting needle, the cutting edge and the cutting opening are all three, the three cutting needles form a structure of one large and two small, and the longitudinal depth of the three cutting openings is different.

7. A shark-mouth type sampling device, characterized in that, include: One handle assembly; One guiding component; A multi-faceted needle tip, detachably mounted to the handle assembly via the guide assembly, and extending through the head and tail of the handle assembly; and A suction assembly is detachably mounted on the tail end of the handle assembly and communicates with the multi-bladed needle tip. The head end of the multi-bladed needle tip has multiple cutting needles, multiple cutting edges, and multiple cutting openings to form multiple cutting surfaces. The multi-bladed needle tip is operated by the handle assembly to cut tissue from multiple directions, and then the cut tissue strip is sucked out by the negative pressure of the suction assembly.

8. The shark mouth sampling device according to claim 7 further includes a needle core wire, the needle core wire being detachably sleeved inside the multi-faceted needle tip, such that the tip of the multi-faceted needle tip is attached to the outside of the needle core wire, guiding the multi-faceted needle tip to puncture into the sampling tissue area.

9. The shark mouth sampling device according to claim 8, wherein the multi-bladed needle tip includes a cutting section, a main body section and a collection channel, the main body section is connected to the cutting section, the cutting section has at least three cutting blades, at least three cutting openings and at least three cutting needles, each of the cutting blades, each of the cutting openings and each of the cutting needles is spaced apart, the collection channel is disposed in the main body section and extends to the cutting section, and the sampled tissue strip cut by the cutting section is aspirated out through the collection channel under the negative pressure of the suction assembly.

10. The shark mouth sampling device according to claim 9, wherein the multi-faceted needle tip further includes at least three cutting surfaces, the cutting edge is disposed at the top of the cutting surface and extends to the top of two adjacent cutting needles, and the area between the two adjacent cutting needles and the cutting edge forms the cutting opening.

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