Ultrasonic interventional sampling device

Abstract

This invention discloses an ultrasound-guided interventional sampling device, comprising a puncture needle with a V-shaped tip. A movable column is slidably fitted inside the puncture needle, and a fixing wire is fixedly installed at the other end of the movable column. A wire support is fixedly installed at the other end of the fixing wire, and an arc-shaped wire is fixedly installed on one side of the wire support. This invention, by configuring the puncture needle, wire support, arc-shaped wire, and conical tip, utilizes their interplay to perform transverse and rotary cutting of human tissue using the conical tip and convex bar at one end of the arc-shaped wire. The sharp surfaces of both the conical tip and the convex bar ensure that the cut surface of the tissue sample remains flat and smooth after sampling, preventing excessive traction on surrounding cells and tissues, reducing local bleeding, and lowering the risk of puncture biopsy procedures.

Description

Technical Field

[0001] This invention relates to the field of puncture biopsy sampling technology, and more specifically, to an ultrasound interventional sampling device. Background Technology

[0002] Biopsy, short for "biological examination," also known as surgical pathology, refers to the technique of removing diseased tissue from a patient's body through puncture or excision for pathological examination when needed for diagnosis or treatment. It is the most important part of diagnostic pathology, providing a clear histopathological diagnosis for the vast majority of submitted cases. Puncture biopsies are usually performed by interventional radiology or radiologists. The obtained tissue or cell samples are generally examined under a microscope by a pathologist. Common biopsy methods include surgical excision biopsy, core needle biopsy, and fine needle aspiration biopsy. A particularly noteworthy method involves a puncture biopsy combined with ultrasound imaging to collect cells from areas inaccessible through the skin. The procedure is as follows: After local anesthesia, the doctor uses a needle (either a fine or core needle, depending on the situation) guided by ultrasound to penetrate the skin and reach the suspected area to obtain human tissue. This type of biopsy can also be called a closed biopsy or percutaneous biopsy, and the process may take about half an hour to complete.

[0003] However, it still has some drawbacks in actual use. For example, current puncture biopsy procedures require inserting a fine needle into the sampling location, and then moving the needle in a fan shape in different directions within the lesion area to aspirate without removing the needle from the lesion tissue or releasing the plunger, in order to obtain a sufficient sample. Alternatively, a thick needle (hollow needle) can be inserted into the lesion tissue, and then the lesion tissue sample can be cut along the sliding outer cutting sheath of the thick needle to fill the groove. Both of these methods will cause unnecessary large-area tissue trauma to the lesion area. In particular, when using a thick needle for sampling, the outer cutting sheath of the thick needle uses a forced cutting and dragging method to destroy the tissue in the lesion area before sampling. During the sampling process, it will pull on the surrounding human tissue, causing local bleeding. After sampling, when the anesthesia fails, the patient will experience greater pain, and the surgical risk is also extremely high. Summary of the Invention

[0004] To overcome the aforementioned deficiencies of the prior art, embodiments of the present invention provide an ultrasound-guided interventional sampling device. By configuring a puncture needle, a wire support, an arc-shaped wire, and a conical tip, and utilizing the cooperation of these components, the conical tip and the convex bar at one end of the arc-shaped wire can be used to perform transverse and rotary cutting of human tissue. Furthermore, the design of both the conical tip and the convex bar, with their sharp surfaces, ensures that the cut surface of the tissue sample remains flat and smooth after sampling, preventing excessive traction on surrounding cells and tissues, reducing local bleeding, and lowering the risk of puncture biopsy surgery, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an ultrasound interventional sampling device, comprising a puncture needle, the tip of which is provided with a V-shaped tip, the overall head of which has a double-headed V-shaped structure, a movable column is slidably fitted inside the puncture needle, an operating base is fixedly connected to the tail end of the movable column, a fixing wire is fixedly installed at the other end of the movable column, a wire support is fixedly installed at the other end of the fixing wire, an arc-shaped wire is fixedly installed on one side of the wire support, the wire support and the arc-shaped wire together form an oval frame structure, a conical tip is integrally formed on the outer edge of the arc-shaped wire, a protruding thorn is fixedly connected to one side of the tip of the conical tip, and a wavy structure is provided in the middle region of the inner edge of the arc-shaped wire;

[0006] The conical tip is conical in shape, and the angle between the conical tip and the convex spike is A, where 0° < A < 90°. The horizontal height of the middle part of the wavy structure is lower than the horizontal height of the two sides of the wavy structure. The wavy structure and the conical tip are symmetrically distributed on the left and right sides of the arc-shaped steel wire.

[0007] The steel wire support and the arc-shaped steel wire satisfy the following rules in their movement posture: When the steel wire support and the arc-shaped steel wire are not in working state, the maximum width of the oval frame structure formed by the steel wire support and the arc-shaped steel wire is equal to the inner diameter of the puncture needle, and the steel wire support and the arc-shaped steel wire maintain a parallel posture with the V-shaped tip for lateral output movement.

[0008] When the steel wire support and the arc-shaped steel wire are in working condition, the maximum width of the oval frame structure formed by the steel wire support and the arc-shaped steel wire is greater than the inner diameter of the puncture needle, and the steel wire support and the arc-shaped steel wire maintain a vertical posture with the V-shaped tip and move laterally in retraction.

[0009] In a preferred embodiment, the puncture needle is hollow in shape, and the puncture needle and the movable column are fitted with a clearance.

[0010] In a preferred embodiment, the overall length of the movable column is one-third of the total length of the puncture needle, and the total length of the movable column, the fixing wire, the wire support, and the arc-shaped wire is greater than the overall length of the puncture needle.

[0011] In a preferred embodiment, the fixing wire, the wire support, and the arc-shaped wire are all made of medical-grade stainless steel.

[0012] In a preferred embodiment, the convex spike is generally a cone-shaped spike structure, and both the tips of the convex spike and the cone-shaped tip are designed with a sharpening effect.

[0013] In a preferred embodiment, the surface of the control base is provided with cross stripes, the diameter of the control base is larger than the diameter of the puncture needle, and the inner side of the wavy structure is provided with a rough surface.

[0014] The technical effects and advantages of this invention are as follows:

[0015] This invention utilizes a puncture needle, a wire support, an arc-shaped wire, and a conical tip. By combining these components, the conical tip and the convex bar at one end of the arc-shaped wire can be used to perform transverse and rotary cutting of human tissue. The sharp surfaces of both the conical tip and the convex bar ensure that the cut surface of the tissue sample remains flat and smooth after sampling, without causing excessive traction on the surrounding cells and tissues. The overall sampling area is comparable to the puncture range of the puncture needle, thus avoiding excessive tissue trauma, reducing local bleeding, and significantly reducing the pain experienced by patients during puncture biopsy, thereby lowering the risk of the procedure.

[0016] The wavy structure 10 on the inner side of the arc-shaped steel wire 7 is used to make static friction contact with the sampled tissue. At the same time, the arc-shaped steel wire and the wire support are designed to gradually shrink in volume when they retract into the puncture needle, thereby causing the tissue sample to gradually deform and compress. The tissue sample is deformed according to the shape of the wavy structure, so that it makes interlocking contact and fixation with the inner side of the arc-shaped steel wire. This enhances the control of the tissue sample during the retrieval process and provides a pre-tightening force to prevent the tissue sample from loosening and slipping during retrieval, thereby further improving the safety of the puncture biopsy process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of a partial three-dimensional structure of the puncture needle tip of the present invention;

[0019] Figure 3This is a schematic diagram of the three-dimensional structure of the steel wire support and the arc-shaped steel wire of the present invention;

[0020] Figure 4 For the present invention Figure 3 A magnified structural diagram at point A;

[0021] Figure 5 This is a partial cross-sectional view of the puncture needle of the present invention;

[0022] Figure 6 This is a schematic diagram of the overall puncture process of the puncture needle of the present invention;

[0023] Figure 7 This is a top view and a side view of the puncture needle tip of the present invention.

[0024] Figure 8 This is a schematic diagram of the cross-sectional structure of the arc-shaped steel wire of the present invention;

[0025] Figure 9 This is a schematic diagram of the retracted and extended states of the arc-shaped steel wire of the present invention.

[0026] The attached diagram is labeled as follows: 1. Puncture needle; 2. V-shaped tip; 3. Movable column; 4. Operating base; 5. Fixing wire; 6. Wire support; 7. Curved wire; 8. Conical tip; 9. Protruding thorn; 10. Wavy structure. Detailed Implementation

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] As attached Figure 1 To be continued Figure 9An ultrasound interventional sampling device is shown, comprising a puncture needle 1, the tip of which is provided with a V-shaped tip 2. The overall head of the V-shaped tip 2 has a double-pointed V-shaped structure. A movable column 3 is slidably fitted inside the puncture needle 1. The tail end of the movable column 3 is fixedly connected to an operating base 4. A fixing wire 5 is fixedly installed at the other end of the movable column 3. A wire support 6 is fixedly installed at the other end of the fixing wire 5. An arc-shaped wire 7 is fixedly installed on one side of the wire support 6. The wire support 6 and the arc-shaped wire 7 together form an oval frame structure. A conical tip 8 is integrally formed on the outer edge of the arc-shaped wire 7. A protruding thorn 9 is fixedly connected to one side of the tip of the conical tip 8. A wave-shaped structure 10 is provided in the middle area of ​​the inner edge. With the above configuration, the double-ended V-shaped structure of the puncture needle 1 can be used to symmetrically puncture human tissue when it is inserted into human tissue. During the process of retrieving the arc-shaped steel wire 7, the tissue sample can be simultaneously limited by both ends of the double-ended V-shaped structure to achieve the purpose of accurate removal of the tissue sample. At the same time, the steel wire support 6 and the arc-shaped steel wire 7 are used to form an oval frame structure. This frame structure can effectively perform fixed-point and quantitative sampling of human tissue, and ensure that the rotational cutting trajectory of the arc-shaped steel wire 7 is smooth, without causing excessive traction to other tissues around the tissue sample, and ensuring that the incision after sampling is flat, reducing the pain suffered by the patient.

[0029] The conical tip 8 is conical in shape, and the angle between the conical tip 8 and the convex thorn 9 is A, where 0° < A < 90°. The horizontal height of the middle part of the wavy structure 10 is lower than the horizontal height of its two sides. The wavy structure 10 and the conical tip 8 are symmetrically distributed on the left and right sides of the arc-shaped steel wire 7. With the above arrangement, it can be ensured that the convex thorn 9 will not interfere with the cutting work of the conical tip 8 during its lateral movement. At the same time, when the fixed steel wire 5 is manipulated to rotate the arc-shaped steel wire 7, the convex thorn 9 will not interfere with the cutting work of the conical tip 8. The convex spikes 9 on the side of the conical tip 8 can cut the tissue sample in the axial rotation direction. Thus, through the cooperation of the conical tip 8 and the convex spikes 9, the process of effectively cutting and sampling the tissue sample is completed, which further improves the practicality of the device. At the same time, since both of its structures are sharp, the cut surface of the tissue sample after sampling remains flat and smooth, and will not cause excessive traction on the surrounding cells and tissues of the tissue sample, thereby reducing the pain of patients during biopsy sampling and further improving the safety of the device.

[0030] The steel wire support 6 and the arc-shaped steel wire 7 satisfy the following rules in their movement posture: When the steel wire support 6 and the arc-shaped steel wire 7 are not in working state, the maximum width of the oval frame structure formed by the steel wire support 6 and the arc-shaped steel wire 7 is equal to the inner diameter of the puncture needle 1, and the steel wire support 6 and the arc-shaped steel wire 7 maintain a parallel posture with the V-shaped tip 2 for lateral output movement.

[0031] When the steel wire support 6 and the arc-shaped steel wire 7 are in operation, the maximum width of the oval frame structure formed by the steel wire support 6 and the arc-shaped steel wire 7 is greater than the inner diameter of the puncture needle 1. The steel wire support 6 and the arc-shaped steel wire 7 maintain a vertical posture with the V-shaped tip 2 and move laterally in retraction. By adopting the above-mentioned different posture settings of the steel wire support 6 and the arc-shaped steel wire 7, it is ensured that after the arc-shaped steel wire 7 is cut, it can gradually shrink in volume as it retracts into the puncture needle 1, thereby causing the tissue sample to gradually deform and compress. Since human tissue has a certain degree of elasticity, the tissue sample can deform and shrink synchronously with the contraction of the arc-shaped steel wire 7, so as to further improve the control of the tissue sample during the retrieval process, increase its pre-tightening force on the tissue sample, and avoid the problem of tissue sample displacement or loosening during the retrieval process.

[0032] The puncture needle 1 has a hollow structure. The puncture needle 1 and the movable column 3 are fitted with a gap. The overall length of the movable column 3 is one-third of the total length of the puncture needle 1. The total length of the movable column 3, the fixing wire 5, the wire support 6, and the arc-shaped wire 7 is greater than the overall length of the puncture needle 1. The fixing wire 5, the wire support 6, and the arc-shaped wire 7 are made of medical-grade stainless steel. By setting the lengths of the movable column 3 and the puncture needle 1 as described above, it can be ensured that when the movable column 3 drives the arc-shaped wire 7 into the sampling site, its depth is matched with the insertion depth of the puncture needle 1. This avoids the movable column 3 driving the arc-shaped wire 7 to go too deep or too shallow, thereby ensuring the safety of tissue sampling and meeting the requirements for the total sample volume.

[0033] Please refer to the attached instruction manual for details. Figure 8 The convex spike 9 has a cone-shaped spike structure, and both the convex spike 9 and the cone tip 8 have sharpened tips.

[0034] The specific implementation method is as follows: the convex spike 9 has a cone-shaped spike structure, which can drive the arc-shaped steel wire 7 to smoothly cut into the sampling area, so as to facilitate the subsequent segmentation and sampling of tissue samples.

[0035] Please refer to the attached instruction manual for details. Figure 5 The surface of the control base 4 is provided with cross stripes, the diameter of the control base 4 is larger than the diameter of the puncture needle 1, and the inner side of the wave-shaped structure 10 is provided with a rough surface structure.

[0036] The specific implementation method is as follows: by using the diameter settings of the control base 4 and the puncture needle 1, it is possible to prevent the control base 4 from pulling the arc-shaped steel wire 7 too deeply into the patient's body after it is released, thereby providing additional protection against accidents for the puncture needle 1 as a whole, so as to improve its overall safety.

[0037] Working principle of the invention:

[0038] Step 1: First, the operator assembles all the components of the device normally, and then uses the device normally.

[0039] Step 2: First, under ultrasound guidance, the sampling site is identified. Then, the puncture needle 1 is inserted through the skin to the suspected area to obtain human tissue. Subsequently, the steel wire support 6 at one end of the fixed steel wire 5 and the curved steel wire 7 are gradually pushed into the sampling area using the manipulator base 4. The conical tip 8 at one end of the curved steel wire 7 is used to cut the human tissue, allowing it to smoothly reach the sampling area and maintain the same insertion depth as the puncture needle 1. Then, the manipulator base 4 is rotated, causing the curved steel wire 7 on one side of the steel wire support 6 to rotate synchronously. At this point, the convex spike 9 on one side of the conical tip 8 is used to complete the rotational cutting operation on the human tissue. Both the conical tip 8 and the convex spike 9 are designed with sharp surfaces, ensuring that the cut surface of the tissue sample remains flat and smooth after sampling, without causing excessive traction on the surrounding cells and tissues. Next, the curved steel wire 7 is rotated to maintain its perpendicularity to the initial insertion direction, thus keeping the curved steel wire 7 perpendicular to the initial cutting mark. Then, the operating base 4 is removed outwards, thereby moving the fixing steel wire. 5. The wire support 6 and the curved wire 7 are gradually withdrawn from the human tissue. During the withdrawal of the curved wire 7, the wavy structure 10 on the inner side of the curved wire 7 provides static friction contact with the sampled tissue. The gradual volume contraction of the curved wire 7 and the wire support 6 as they retract into the puncture needle 1 causes the tissue sample to gradually deform and compress, conforming to the shape of the wavy structure 10. This allows the sample to make interlocking contact with the inner side of the curved wire 7, facilitating retrieval. During the process, the degree of control over the tissue sample is enhanced, and a pre-tightening force is provided to the tissue sample to prevent it from loosening and slipping during retrieval, thereby further improving the safety of the puncture biopsy process. Finally, after the sampling is completed, the curved steel wire 7 is moved laterally out of the tip of the puncture needle 1, and the curved steel wire 7 is slightly rotated to detach the tissue sample, which is then temporarily stored in a storage device to facilitate subsequent microscopic examination of the tissue sample. Ultimately, the device completes the cutting and sampling process for human tissue samples.

[0040] Step 3: First, the operator shuts down the device normally. Then, the operator checks whether the fixing between the various components of the device is normal. Then, the operator replaces and repairs the aging and severely worn parts inside the device.

[0041] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0042] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0043] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An ultrasound interventional sampling device, comprising a puncture needle (1), characterized in that: The puncture needle (1) has a V-shaped tip (2) at its head end. The V-shaped tip (2) has a double-headed V-shaped structure. The puncture needle (1) has a sliding sleeve with a movable column (3). The tail end of the movable column (3) is fixedly connected to an operating base (4). The other end of the movable column (3) is fixedly installed with a fixing wire (5). The other end of the fixing wire (5) is fixedly installed with a wire support (6). An arc-shaped wire (7) is fixedly installed on one side of the wire support (6). The wire support (6) and the arc-shaped wire (7) together form an oval frame structure. The outer edge of the arc-shaped wire (7) is integrally formed with a conical tip (8). A protruding thorn (9) is fixedly connected to one side of the tip of the conical tip (8). The middle area of ​​the inner edge of the arc-shaped wire (7) is provided with a wave-like structure (10). The conical tip (8) is conical in shape. The angle between the conical tip (8) and the convex thorn (9) is A, and 0° < A < 90°. The horizontal height of the middle part of the wave-shaped structure (10) is lower than the horizontal height of the two sides of the wave-shaped structure (10). The wave-shaped structure (10) and the conical tip (8) are symmetrically distributed on the left and right sides of the arc-shaped steel wire (7). The steel wire support (6) and the arc-shaped steel wire (7) satisfy the following rules in their movement posture: When the steel wire support (6) and the arc-shaped steel wire (7) are not in working state, the maximum width of the oval frame structure formed by the steel wire support (6) and the arc-shaped steel wire (7) is equal to the inner diameter of the puncture needle (1), and the steel wire support (6) and the arc-shaped steel wire (7) maintain a parallel posture with the V-shaped tip (2) for lateral output movement; When the steel wire support (6) and the arc-shaped steel wire (7) are in working condition, the maximum width of the oval frame structure formed by the steel wire support (6) and the arc-shaped steel wire (7) is greater than the inner diameter of the puncture needle (1), and the steel wire support (6) and the arc-shaped steel wire (7) maintain a vertical posture and move laterally back.

2. The ultrasound interventional sampling device according to claim 1, characterized in that: The puncture needle (1) has a hollow structure, and the puncture needle (1) and the movable column (3) are fitted with a gap.

3. The ultrasound interventional sampling device according to claim 1, characterized in that: The overall length of the movable column (3) is one-third of the total length of the puncture needle (1), and the total length of the movable column (3), the fixing wire (5), the wire support (6), and the arc-shaped wire (7) is greater than the overall length of the puncture needle (1).

4. The ultrasound interventional sampling device according to claim 1, characterized in that: The fixing wire (5), the wire support (6), and the arc-shaped wire (7) are all made of medical-grade stainless steel.

5. The ultrasound interventional sampling device according to claim 1, characterized in that: The convex spike (9) has a cone-shaped spike structure, and the tips of the convex spike (9) and the cone tip (8) are both designed with a sharpened tip.

6. The ultrasound interventional sampling device according to claim 1, characterized in that: The surface of the control base (4) is provided with cross stripes, the diameter of the control base (4) is larger than the diameter of the puncture needle (1), and the inner side of the wave-shaped structure (10) is set as a rough surface structure.

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