Actuating mechanism with sampling groove

Abstract

The utility model discloses an actuating mechanism with a sampling groove, which relates to the technical field of biopsy sampling and comprises a pointed crochet hook, a cutting sleeve and an elastic part. A tissue storage groove used for storing tissue is formed in the pointed-end crochet needle, and a medicine storage groove used for bearing medicine is formed in the pointed-end crochet needle; the extension direction of the cutting sleeve is the same as that of the pointed-end crochet hook, and the pointed-end crochet hook is slidably mounted in the cutting sleeve; the elastic part comprises a fixed plate and a movable plate, the fixed plate is installed at the end, close to the tip end of the pointed-end hooked needle, of the inner wall of the cutting sleeve, the movable plate is connected with the fixed plate, the movable plate extends out of the cutting sleeve and bends in the direction close to the pointed-end hooked needle, and the movable plate is elastic and can be pushed by the pointed-end hooked needle to move to a compressed state. After being separated from the pointed-end crochet needle, the movable plate can extend into the medicine storage groove under the action of self elasticity so as to push the medicine to leave the medicine storage groove. According to the utility model, the medicine can be directly delivered to the focus while the target tissue is sampled.

Description

Technical Field

[0001] This utility model relates to the field of biopsy sampling technology, and in particular to an actuator with a sampling groove. Background Technology

[0002] Accurately determining the type of tumor is crucial for developing a treatment plan. Histopathological examination is one of the effective methods for diagnosing and classifying malignant tumors, typically requiring a sample of the target tissue from the corresponding site. Currently, there are two main methods for obtaining this sample: surgery and biopsy. While surgery provides highly intact tissue samples and reduces the error rate in pathological examination, it is more invasive, has a longer recovery time, and may be difficult to perform due to economic or physical limitations. In contrast, biopsy, using ultrasound or CT to confirm the sampling location and employing a biopsy needle along a predetermined path to obtain the target tissue, offers advantages such as low cost, minimal trauma, fewer complications, and faster healing, making it the preferred sampling method in clinical practice. However, in practice, biopsy may require multiple punctures to ensure diagnostic accuracy. Frequent punctures may, in some cases, promote tumor cell proliferation and spread, and may also lead to infection of the puncture wound. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an actuator with a sampling slot, which can deliver drugs directly to the lesion while sampling the target tissue.

[0004] An actuator with a sampling slot according to a first aspect embodiment of the present invention includes: a pointed hook, a cutting sleeve, and an elastic part. The pointed hook has a tissue storage slot for storing tissue and a drug storage slot for holding medication. The cutting sleeve extends in the same direction as the pointed hook, and the pointed hook is slidably installed inside the cutting sleeve. The elastic part includes a fixed plate and a movable plate. The fixed plate is installed on the inner wall of the cutting sleeve near the tip of the pointed hook. The movable plate is connected to the fixed plate, extends out of the cutting sleeve, and bends towards the pointed hook. The movable plate has a compressed state and an extended state. The movable plate is elastic and can move to the compressed state under the push of the pointed hook. After separating from the pointed hook, the movable plate can extend into the drug storage slot under its own elasticity to push the medication out of the drug storage slot.

[0005] According to an embodiment of the present invention, an actuator with a sampling slot has at least the following beneficial effects: the cutting sleeve and the pointed hook needle work together to cut tissue into the tissue storage slot for storage. During the process of the cutting sleeve moving to cut tissue, when the movable plate moves to align with the drug storage slot, the movable plate extends into the drug storage slot under its own elasticity, and the movable plate moves with the cutting sleeve to push the drug out of the drug storage slot, so that the drug can be directly delivered to the lesion while sampling the target tissue.

[0006] According to some embodiments of the present invention, the side wall of the tissue storage groove near the tip of the pointed hook is recessed to form an arc surface.

[0007] According to some embodiments of the present invention, the maximum depth of the tissue storage groove is greater than 2 / 3 of the diameter of the pointed hook.

[0008] According to some embodiments of this utility model, the inner diameter of the cutting sleeve is slightly larger than the outer diameter of the pointed hook, and the cutting sleeve and the pointed hook are in clearance fit so that the pointed hook can move freely inside the cutting sleeve.

[0009] According to some embodiments of the present invention, the drug storage tank is provided with guide slopes at both ends along the extension direction of the pointed hook, and the guide slopes are used to abut against the movable plate so as to facilitate the movable plate to enter and exit the drug storage tank.

[0010] According to some embodiments of this utility model, the maximum depth of the drug storage tank is greater than 1 / 2 of the diameter of the pointed hook.

[0011] According to some embodiments of this utility model, the drug is a sustained-release formulation composed of biodegradable materials and bactericidal and anti-inflammatory agents.

[0012] According to some embodiments of this utility model, the length of the drug storage tank is not less than 2cm.

[0013] According to some embodiments of this utility model, the length of the tissue storage groove is not less than 2cm.

[0014] According to some embodiments of this utility model, the tip is a triangular needle.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1This is a schematic diagram of step one of an embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of step two of an embodiment of the present invention;

[0019] Figure 3 This is an overall schematic diagram of the beginning of step three in one embodiment of the present invention;

[0020] Figure 4 This is an overall schematic diagram at the end of step three of an embodiment of the present invention;

[0021] Figure 5 This is a schematic diagram of step four of an embodiment of the present invention.

[0022] Icon labels:

[0023] Pointed crochet hook 100, tip 101;

[0024] Tissue storage slot 200, arc surface 210;

[0025] Drug storage tank 300, guide slope 310;

[0026] Cut sleeve 400;

[0027] Elastic part 500, fixed plate 510, movable plate 520. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this utility model.

[0030] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0031] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0032] Reference Figures 1 to 5 As shown, an actuator with a sampling groove according to one embodiment of the present invention includes: a pointed hook 100, a cutting sleeve 400, and an elastic part 500. The pointed hook 100 is cylindrical in shape, with a pointed tip 101 at one end. The pointed hook 100 has a tissue storage groove 200 for storing tissue and a drug storage groove 300 for holding drugs. The cutting sleeve 400 is cylindrical. The cutting sleeve 400 is used to assist in cutting tissue and to hold the cut pathological tissue. The cutting sleeve 400 is made of metal, preferably titanium or titanium alloy, which has the characteristics of low density, high strength, and good ductility. The cutting sleeve 400 and the pointed hook 100 are respectively connected to a driving device and can be driven independently by the driving device. The specific structure of the driving device is prior art, disclosed in Chinese utility model patents with publication numbers CN2142701Y and CN2108524U, and will not be described in detail here. The cutting sleeve 400 extends in the same direction as the pointed hook 100, and the pointed hook 100 is slidably installed inside the cutting sleeve 400. The elastic part 500 includes a fixed plate 510 and a movable plate 520, which are integrally formed. The fixed plate 510 and the movable plate 520 are made of alloy spring steel. The fixed plate 510 is installed on the inner wall of the cutting sleeve 400 near the tip 101 of the pointed hook 100, and the fixed plate 510 is fixed to the cutting sleeve 400 by welding. The movable plate 520 is connected to the fixed plate 510. The movable plate 520 extends out of the cutting sleeve 400 and bends towards the pointed hook 100. The movable plate 520 has a compressed state and an extended state. When the cutting sleeve 400 moves the movable plate 520 to abut against the side wall of the pointed hook 100, the movable plate 520 is elastic and can deform under the push of the pointed hook 100 to move to the compressed state. After the movable plate 520 separates from the pointed hook 100, it can extend into the drug storage tank 300 under its own elasticity to push the drug out of the drug storage tank 300. The movable plate 520 is bent and tilted so that it can remain in the extended state when pushing the drug.

[0033] Reference Figures 1 to 5As shown, it can be understood that the side wall of the tissue storage groove 200 near the tip 101 of the pointed hook 100 has an inwardly recessed arc surface 210. When the cutting sleeve 400 cuts the tissue, the arc surface 210 serves to hook the tissue in the tissue storage groove 200, effectively preventing the tissue from falling out of the tissue storage groove 200 during the cutting process and improving the sampling success rate.

[0034] Reference Figures 1 to 5 As shown, it can be understood that the maximum depth of the tissue storage groove 200 is greater than 2 / 3 of the diameter of the pointed hook 100, in order to provide a larger space for storing pathological tissues. It is foreseeable that the maximum depth of the tissue storage groove 200 is less than 3 / 4 of the diameter of the pointed hook 100, to ensure the structural strength of the pointed hook 100 and prevent it from breaking during operation.

[0035] Reference Figures 1 to 5 As shown, it can be understood that the inner diameter of the cutting sleeve 400 is slightly larger than the outer diameter of the pointed hook 100, and there is a small gap between the cutting sleeve 400 and the pointed hook 100, which is a clearance fit to allow the pointed hook 100 to move freely within the cutting sleeve 400. The outer diameter of the cutting sleeve 400 is preferably 2.7–4.9 mm, and the lengths of the pointed hook 100 and the cutting sleeve 400 can be set according to actual conditions. The length of the cutting sleeve 400 is less than the length of the pointed hook 100 so that the tip 101 of the pointed hook 100 can always be located outside the cutting sleeve 400.

[0036] Reference Figures 1 to 5 As shown, it can be understood that both ends of the drug storage tank 300 along the extension direction of the pointed hook 100 are provided with guide ramps 310. The guide ramps 310 are used to abut against the movable plate 520 to facilitate the movement of the movable plate 520 in and out of the drug storage tank 300. When the movable plate 520 moves with the cutting sleeve 400 to abut against the ramp of the guide ramp 310, the guide ramp 310 provides a component force to the movable plate 520 in the radial direction of the cutting sleeve 400 and outward, causing the movable plate 520 to elastically deform and move to a compressed state or an extended state. The angle between the guide ramp 310 and the extension direction of the pointed hook 100 is 30 degrees to 45 degrees.

[0037] Reference Figures 1 to 5As shown, it can be understood that the maximum depth of the drug storage tank 300 is greater than half the diameter of the pointed hook 100 to provide a larger space for storing the drug and meet the dosage requirements for local drug administration. It is foreseeable that the maximum depth of the drug storage tank 300 is less than three-quarters the diameter of the pointed hook 100 to ensure the structural strength of the pointed hook 100 and prevent it from breaking during operation. The drug storage tank 300 and the tissue storage tank 200 are offset axially from the pointed hook 100 to ensure that the pointed hook 100 has a sufficient cross-sectional area to meet the strength requirements during operation. The drug storage tank 300 and the tissue storage tank 200 are also offset radially from the pointed hook 100 to prevent the drug from being pushed into the tissue storage tank 200 by the cutting sleeve 400.

[0038] Reference Figure 1 As shown, the drug is a sustained-release formulation composed of biodegradable materials and antibacterial and anti-inflammatory agents. The biodegradable materials are selected from one or more of peptides, polyamino acids, and polylactic acid. Since the drug needs to slowly release its active ingredient at the target tissue of the lesion, the biodegradable materials must be made of substances that can dissolve in the human body and do not readily react with the antibacterial and anti-inflammatory agents. Furthermore, because different lesions use different antibacterial and anti-inflammatory agents, their release rates and dosages also vary. Appropriate materials with high solubility and the type of drug they carry can be selected to ensure that the antibacterial and anti-inflammatory agents are released to the lesion at the prescribed rate and dosage, achieving sustained and stable therapeutic effects. The antibacterial and anti-inflammatory agents are selected from antibiotics and antitumor cytotoxic agents to prevent wound infection after puncture sampling or metastasis of tumor cells through the wound.

[0039] Reference Figures 1 to 5 As shown, it is understood that the length of the drug storage tank 300 is not less than 2 cm. The length of the drug storage tank 300 should be proportional to the depth of the sampling puncture. This is to ensure that the drug can be evenly distributed along the wound created by the pointed hook needle 100, effectively preventing wound infection or tumor cell metastasis through the wound after puncture sampling.

[0040] Reference Figures 1 to 5 As shown, it can be understood that the length of the tissue storage tank 200 is not less than 2 cm. The length of the tissue storage tank 200 is proportional to the number of tissue cells obtained in a single sampling. Due to the requirements of sampling and testing, a certain amount of tissue needs to be obtained for testing, so the length of the tissue storage tank 200 needs to be not less than 2 cm.

[0041] Reference Figures 1 to 5 As shown, it can be understood that the tip 101 of the pointed hook 100 is a triangular needle tip. The advantage of the triangular needle tip structure is that it is sharper, making the pointed hook 100 easier to puncture tissue.

[0042] Workflow:

[0043] Step 1, such as Figure 1 As shown, the pointed hook 100 and the cutting cannula 400 are inserted together into the tissue to the location where sampling is required. During the puncture process, the relative positions of the pointed hook 100 and the cutting cannula 400 remain unchanged.

[0044] Step 2: Push the tip 101 of the pointed hook 100 to extend it away from the cutting sleeve 400, and move the pointed hook 100 to the position shown in the image. Figure 2 At the position shown, the tissue enters the tissue storage tank 200. Since the movable plate 520 extends out of the cutting sleeve 400 and bends towards the pointed hook 100, the movable plate 520 is blocked by the drug in the drug storage tank 300 in step two and will not extend into the drug storage tank 300.

[0045] Step three: Push the cutting sleeve 400 towards the tip 101 of the pointed hook 100. The movable plate 520 moves with the cutting sleeve 400 and enters the drug storage tank 300 under its own elastic force. Figure 3 and Figure 4 As shown, the movable plate 520 gradually pushes the drug out of the drug storage tank 300. When the movable plate 520 enters and exits the drug storage tank 300, it is pushed by the guide slope 310 to switch between a compressed state and an extended state.

[0046] Step 4, as follows Figure 5 As shown, the cutting sleeve 400 cuts the tissue in the tissue storage tank 200, separating the tissue in the tissue storage tank 200 from the surrounding tissue. Then, the pointed hook 100 and the cutting sleeve 400 are pulled out. During the pulling process, the relative positions of the pointed hook 100 and the cutting sleeve 400 remain unchanged, so that the tissue in the tissue storage tank 200 is blocked by the inner wall of the cutting sleeve 400.

[0047] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. An actuator with a sampling slot, characterized in that, include: A pointed hook needle (100) is provided with a tissue storage slot (200) for storing tissues and a drug storage slot (300) for holding drugs. A cutting sleeve (400) extends in the same direction as the pointed hook (100), and the pointed hook (100) is slidably installed inside the cutting sleeve (400). The elastic part (500) includes a fixed plate (510) and a movable plate (520). The fixed plate (510) is installed on the inner wall of the cutting sleeve (400) near the tip (101) of the pointed hook (100). The movable plate (520) is connected to the fixed plate (510). The movable plate (520) extends out of the cutting sleeve (400) and bends towards the pointed hook (100). The movable plate (520) has a compressed state and an extended state. The movable plate (520) is elastic and can move to the compressed state under the push of the pointed hook (100). After the movable plate (520) is separated from the pointed hook (100), it can extend into the drug storage tank (300) under its own elasticity to push the drug out of the drug storage tank (300).

2. The actuator with sampling slot according to claim 1, characterized in that: The tissue storage groove (200) has an arcuate surface (210) formed in the side wall of the tip (101) near the tip of the hook (100).

3. The actuator with sampling slot according to claim 2, characterized in that: The maximum depth of the tissue storage groove (200) is greater than 2 / 3 of the diameter of the pointed hook (100).

4. The actuator with sampling slot according to claim 1, characterized in that: The inner diameter of the cutting sleeve (400) is slightly larger than the outer diameter of the pointed hook (100). The cutting sleeve (400) and the pointed hook (100) are in clearance fit so that the pointed hook (100) can move freely inside the cutting sleeve (400).

5. The actuator with sampling slot according to claim 4, characterized in that: The drug storage tank (300) is provided with guide slopes (310) at both ends along the extension direction of the pointed hook (100). The guide slopes (310) are used to abut against the movable plate (520) so that the movable plate (520) can enter and exit the drug storage tank (300).

6. The actuator with sampling slot according to claim 1, characterized in that: The maximum depth of the drug storage tank (300) is greater than 1 / 2 of the diameter of the pointed hook (100).

7. The actuator with sampling slot according to claim 1, characterized in that: The drug is a sustained-release formulation composed of biodegradable materials and bactericidal and anti-inflammatory agents.

8. The actuator with sampling slot according to claim 1, characterized in that: The length of the drug storage tank (300) is not less than 2cm.

9. The actuator with sampling slot according to claim 1, characterized in that: The length of the tissue storage slot (200) is not less than 2cm.

10. The actuator with sampling slot according to claim 1, characterized in that: The tip (101) is a triangular needle.

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