Ultrasonic intervention sampling device

Abstract

The invention discloses an ultrasonic intervention sampling device which comprises a puncture needle, a V-shaped tip is arranged at the head end of the puncture needle, a movable column is slidably sleeved with the puncture needle, a fixed steel wire is fixedly installed at the other end of the movable column, and a steel wire support is fixedly installed at the other end of the fixed steel wire. And an arc-shaped steel wire is fixedly mounted on one side of the steel wire bracket. The puncture needle, the steel wire support, the arc-shaped steel wire and the conical tip are arranged and matched with one another, the conical tip and the convex thorn at one end of the arc-shaped steel wire can be used for conducting transverse incision and rotary cutting on human tissue, and the conical tip and the convex thorn are arranged to be sharp faces; the section of the whole tissue sample after sampling is kept flat and smooth, excessive traction influence on peripheral cells and tissues of the tissue sample is avoided, the local bleeding amount is reduced, and the risk degree of a needle biopsy operation is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of puncture biopsy sampling, and more specifically, the present invention relates to an ultrasonic intervention sampling device. Background Art

[0002] Biopsy sampling is the abbreviation of "living tissue examination", also known as surgical pathology examination. It refers to the technology of removing diseased tissue from the patient's body by puncture or cutting for pathological examination in response to the needs of diagnosis and treatment. It is the most important part of diagnostic pathology, and a clear histopathological diagnosis can be made for the vast majority of cases submitted for examination. Puncture biopsy is usually performed by interventional or radiologists, and the tissue samples or cell samples obtained are generally examined by pathologists under a microscope. Common biopsy methods include surgical excision biopsy, coarse needle puncture biopsy, and fine needle aspiration biopsy. Among them, a puncture biopsy method that is combined with an ultrasound imaging procedure and is used to collect cells from areas that cannot be sensed through the skin is particularly involved. The operating procedure is as follows: After local anesthesia, the doctor uses a needle (a fine needle or a coarse needle can be used depending on the actual situation) to pass the needle through the surface of the skin through the guidance of ultrasound images into the suspicious area and obtain human tissue. This biopsy can also be called a closed biopsy or percutaneous biopsy. This process may take about half an hour to complete.

[0003] However, there are still some disadvantages in its actual use. For example, in the current puncture biopsy operation, a thin needle needs to be inserted into the sampling position, and then the needle moves in a fan-shaped manner in different directions in the lesion area to draw suction without leaving the lesion tissue and releasing the plunger, so as to obtain a sufficient amount of sample. Alternatively, a thick needle (hollow needle) is inserted into the lesion tissue, and then the lesion tissue sample is cut along the sliding outer cutting sheath of the thick needle, so as to fill the lesion tissue into the groove. Both methods will cause unnecessary large-area tissue trauma to the lesion area, especially when using a thick needle for sampling. The outer cutting sheath of the thick needle adopts a forced cutting and dragging method to destroy the tissue in the lesion area before sampling. During the sampling process, the surrounding human tissue will be involved, resulting in local bleeding, and after sampling, when the anesthesia fails, the patient will suffer greater pain. At the same time, the surgical risk is also extremely high. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an ultrasonic interventional sampling device, which, by providing a puncture needle, a wire bracket, an arc-shaped wire and a conical tip, can cooperate with each other to respectively utilize the conical tip at one end of the arc-shaped wire and the convex thorn to perform transverse incision and rotational cutting on human tissue, and the conical tip and the convex thorn are both sharp surfaces, so that the cut surface of the entire 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 local bleeding and reducing the risk of puncture biopsy surgery, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an ultrasonic intervention sampling device, comprising a puncture needle, the head end of the puncture needle is provided with a V-shaped tip, the overall head of the V-shaped tip is a double-head tip V-shaped structure, the internal sliding sleeve of the puncture needle is provided with a movable column, the tail end of the movable column is fixedly connected to a manipulation base, the other end of the movable column is fixedly installed with a fixed steel wire, the other end of the fixed steel wire is fixedly installed with a steel wire bracket, one side of the steel wire bracket is fixedly installed with an arc-shaped steel wire, the steel wire bracket and the arc-shaped steel wire form an oval frame structure as a whole, the outer edge side of the arc-shaped steel wire is integrally formed with a conical tip, one side of the tip of the conical tip is fixedly connected with a convex thorn, and the middle area of ​​the inner edge side of the arc-shaped steel wire is provided with a wavy structure;

[0006] The conical tip is conical as a whole, the angle between the conical tip and the convex thorn is A, and 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, and the wavy structure and the conical tip are symmetrically distributed on the left and right side surfaces of the arc-shaped steel wire;

[0007] The steel wire bracket and the curved steel wire satisfy the following rules in their motion posture: when the steel wire bracket and the curved steel wire are in a non-working state, the maximum width of the oval frame structure formed by the steel wire bracket and the curved steel wire as a whole is equal to the inner diameter of the puncture needle, and the steel wire bracket and the curved steel wire maintain a parallel posture with the V-shaped tip to perform lateral output movement;

[0008] When the steel wire bracket and the arc-shaped steel wire are in working state, the maximum width of the oval frame structure formed by the steel wire bracket and the arc-shaped steel wire as a whole is greater than the inner diameter of the puncture needle, and the steel wire bracket and the arc-shaped steel wire maintain a vertical posture with the V-shaped tip to perform lateral retraction movement.

[0009] In a preferred embodiment, the puncture needle is a hollow structure as a whole, and a clearance fit is adopted between the puncture needle and the movable column.

[0010] In a preferred embodiment, the overall length of the movable column is one third of the overall length of the puncture needle, and the overall length of the movable column, the fixed steel wire, the steel wire bracket and the curved steel wire is greater than the overall length of the puncture needle.

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

[0012] In a preferred embodiment, the convex thorn is an overall conical spike structure, and the tips of the convex thorn and the conical tip are both designed with sharp edges.

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

[0014] Technical effects and advantages of the present invention:

[0015] The present invention provides a puncture needle, a steel wire support, an arc-shaped steel wire and a conical tip, and utilizes the mutual cooperation of the above-mentioned components to respectively utilize the conical tip at one end of the arc-shaped steel wire and the convex thorn to perform transverse incision and rotational incision on human tissues, and the conical tip and the convex thorn are both sharp surfaces, so that the cut surface of the entire tissue sample after sampling remains flat and smooth, and will not cause excessive pulling effects on the surrounding cells and tissues of the tissue sample. The overall sampling area is equivalent to the puncture range of the puncture needle, so that an excessively large tissue trauma area is not caused, and the amount of local bleeding is reduced. At the same time, the pain degree of the patient during the puncture biopsy can be greatly reduced, and the risk of the puncture biopsy operation can be reduced.

[0016] The wavy structure 10 arranged on the inner side of the arc-shaped steel wire 7 is used to perform static friction contact with the sampled tissue sample. At the same time, when the arc-shaped steel wire and the steel wire bracket are retracted into the puncture needle, the volume is gradually reduced, thereby driving the tissue sample to gradually deform and compress, and deform it along with the shape of the wavy structure, so that it is in canine-tooth-like contact and fixation with the inner side of the arc-shaped steel wire, so as to enhance the control degree of the tissue sample during the recovery process, and provide a pre-tightening force for the tissue sample, so as to avoid the loosening and slipping of the tissue sample during the recovery process, and further improve the safety of the puncture biopsy process. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0020] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure at point A;

[0021] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the puncture needle of the present invention;

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

[0023] Figure 7 It is a schematic diagram of the top view and side structure of the puncture needle tip of the present invention;

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

[0025] Fig. 9 It is a schematic structural diagram of the retracted state and the extended state of the arc-shaped steel wire of the present invention.

[0026] The accompanying drawings are marked as follows: 1. puncture needle; 2. V-shaped tip; 3. movable column; 4. operating base; 5. fixed steel wire; 6. steel wire bracket; 7. curved steel wire; 8. conical tip; 9. convex thorn; 10. wavy structure. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] As attached Figure 1 To Attachment Fig. 9The ultrasonic intervention sampling device shown in the figure comprises a puncture needle 1, wherein the head end of the puncture needle 1 is provided with a V-shaped tip 2, the overall head of the V-shaped tip 2 is a double-headed tip V-shaped structure, the internal sliding sleeve of the puncture needle 1 is provided with a movable column 3, the tail end of the movable column 3 is fixedly connected to a manipulation base 4, the other end of the movable column 3 is fixedly installed with a fixed steel wire 5, the other end of the fixed steel wire 5 is fixedly installed with a steel wire bracket 6, one side of the steel wire bracket 6 is fixedly installed with an arc-shaped steel wire 7, the steel wire bracket 6 and the arc-shaped steel wire 7 form an oval frame structure as a whole, the outer edge side of the arc-shaped steel wire 7 is integrally formed with a conical tip 8, the tip of the conical tip 8 is fixedly connected to a convex thorn 9 on one side, the arc-shaped steel wire 7 A wavy structure 10 is provided in the middle area of ​​the inner edge side. With the above arrangement, the double-headed V-shaped structure of the puncture needle 1 can be used to puncture the human tissue evenly and symmetrically when piercing the human tissue, and in the process of recovering the arc-shaped steel wire 7, the tissue sample can be simultaneously limited by both ends of the double-headed V-shaped structure to achieve the purpose of accurately removing the tissue sample. At the same time, the steel wire bracket 6 and the arc-shaped steel wire 7 are used to form an oval frame structure. The frame structure can effectively perform fixed-point and quantitative sampling of human tissue, and ensure that the rotating cutting trajectory of the arc-shaped steel wire 7 is smooth, and will not cause excessive pulling effect on other tissues around the tissue sample, and ensure that the incision after sampling is smooth, reducing the pain suffered by the patient;

[0029] The conical tip 8 is conical as a whole, and 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 wavy structure 10 is lower than the horizontal height of the two sides of the wavy structure 10. 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. The above arrangement can ensure that the convex thorn 9 will not interfere with the cutting work of the conical tip 8 during the lateral movement of the conical tip 8. At the same time, when the fixed steel wire 5 is manipulated to drive the arc-shaped steel wire 7 to rotate, The convex thorns 9 on the side of the conical tip 8 can complete the cutting of the tissue sample in the axial rotation direction, so that the conical tip 8 and the convex thorns 9 cooperate with each other to complete the process of effectively cutting the tissue sample and then sampling, further improving the practicality of the device. At the same time, both structures are sharp surfaces, so that the cut surface of the entire tissue sample after sampling remains flat and smooth, and will not cause excessive pulling effects on the surrounding cells and tissues of the tissue sample, thereby reducing the pain of the patient during the biopsy sampling operation and further improving the safety of the device;

[0030] The steel wire bracket 6 and the curved steel wire 7 satisfy the following rules in their motion posture: when the steel wire bracket 6 and the curved steel wire 7 are in a non-working state, the maximum width of the oval frame structure formed by the steel wire bracket 6 and the curved steel wire 7 as a whole is equal to the inner diameter of the puncture needle 1, and the steel wire bracket 6 and the curved steel wire 7 maintain a parallel posture with the V-shaped tip 2 to perform lateral output movement;

[0031] When the wire bracket 6 and the arc-shaped wire 7 are in the working state, the maximum width of the oval frame structure formed by the wire bracket 6 and the arc-shaped wire 7 is greater than the inner diameter of the puncture needle 1, and the wire bracket 6 and the arc-shaped wire 7 maintain a vertical posture with the V-shaped tip 2 to perform lateral retraction movement. The different postures of the wire bracket 6 and the arc-shaped wire 7 are set to ensure that after the cutting of the tissue sample is completed, the arc-shaped wire 7 can be retracted into the puncture needle 1 by itself, and the volume is gradually reduced, thereby driving the tissue sample to gradually deform and compress. Since human tissue has a certain degree of elasticity, the tissue sample can be deformed and contracted synchronously with the contraction of the arc-shaped wire 7, so as to further improve the control degree of the tissue sample during the recovery process, enhance its pre-tightening force on the tissue sample, and avoid the problem of displacement or loosening of the tissue sample during the recovery process;

[0032] The puncture needle 1 is a hollow structure as a whole. A clearance fit is adopted between the puncture needle 1 and the movable column 3. 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 fixed steel wire 5, the steel wire bracket 6 and the arc-shaped steel wire 7 is greater than the overall length of the puncture needle 1. The fixed steel wire 5, the steel wire bracket 6 and the arc-shaped steel wire 7 are made of medical-grade stainless steel. The length setting of the movable column 3 and the puncture needle 1 can ensure that when the movable column 3 drives the arc-shaped steel wire 7 to enter the sampling site, its depth is mutually adapted to the insertion depth of the puncture needle 1 to avoid the movable column 3 driving the arc-shaped steel wire 7 to enter too deep or too shallow, thereby ensuring the safety of its tissue sampling and the requirement for the total amount of the sample.

[0033] For details, please refer to the attached manual Figure 8 The convex thorn 9 has a cone-shaped spike structure as a whole, and the tips of the convex thorn 9 and the cone-shaped tip 8 are both designed with sharp edges.

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

[0035] For details, please refer to the attached manual Figure 5 The surface of the operating base 4 is provided with cross stripes, the diameter of the operating base 4 is larger than the diameter of the puncture needle 1, and the inner side surface of the wavy structure 10 is set as a rough surface structure.

[0036] The specific implementation method is as follows: by using the diameter setting of the operating base 4 and the puncture needle 1, it is possible to prevent the operating base 4 from slipping out of hand and driving the arc wire 7 to penetrate too deeply into the patient's body, thereby providing the puncture needle 1 as a whole with additional anti-accident protection measures to improve its overall safety.

[0037] Working principle of the present invention:

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

[0039] Step 2: First, under the guidance of ultrasound images, the sampling site is confirmed, and then the puncture needle 1 is passed through the skin surface to the suspicious site to obtain human tissue. Then, the wire bracket 6 at one end of the fixed wire 5 and the curved wire 7 are gradually pushed into the sampling area by operating the base 4, and the human tissue is cut by the tapered tip 8 at one end of the curved wire 7, so that it can smoothly reach the sampling area and maintain the same insertion depth as the puncture needle 1. Then, the operating base 4 is rotated to drive the curved wire 7 on one side of the wire bracket 6 to rotate synchronously. At this time, the convex thorn 9 on one side of the conical tip 8 is used to complete the rotational cutting operation of the human tissue. At the same time, the conical tip 8 and the convex thorn 9 are both sharp surfaces, so that the cut surface of the entire tissue sample after sampling remains flat and smooth, and will not cause excessive pulling effect on the surrounding cells and tissues of the tissue sample. Then, the arc wire 7 is rotated to keep it perpendicular to the initial piercing direction, so that the arc wire 7 is kept perpendicular to the initial cutting mark. Subsequently, the operating base 4 is taken out to drive the fixed wire 7 to rotate. 5 and the steel wire support 6 and the arc-shaped steel wire 7 are gradually withdrawn from the human tissue. At the same time, during the withdrawal of the arc-shaped steel wire 7, the wave-shaped structure 10 arranged on the inner side of the arc-shaped steel wire 7 is used to perform static friction contact with the sampled tissue sample, and the design of gradually shrinking the volume when the arc-shaped steel wire 7 and the steel wire support 6 are retracted into the puncture needle 1 is used, so as to drive the tissue sample to gradually deform and compress, and deform it along with the shape of the wave-shaped structure 10, so that it is contacted and fixed with the inner side of the arc-shaped steel wire 7 in a canine-tooth-like manner, so as to facilitate the recovery process. During the process, the control degree of tissue samples is enhanced, and at the same time, a pre-tightening force is provided for the tissue samples to prevent the tissue samples from loosening and sliding during the recovery process, thereby further improving the safety of the puncture biopsy process. Finally, after the sampling is completed, the arc-shaped steel wire 7 is moved laterally out of the head end of the puncture needle 1, and the arc-shaped steel wire 7 is slightly rotated to remove the tissue sample, and the storage device is used for temporary storage to facilitate the subsequent microscope detection process of the tissue sample. Finally, the device completes the cutting and sampling workflow of the human tissue sample.

[0040] Step 3: First, the operator shuts down the device normally, then checks whether the fixation between the various components of the device is normal, and then replaces and repairs the aged 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 and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0042] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0043] Finally: 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 in the protection scope of the present invention.

Claims

1. An ultrasonic interventional sampling device, comprising a puncture needle (1), characterized in that: The head end of the puncture needle (1) is provided with a V-shaped tip (2), the overall head of the V-shaped tip (2) is a double-tip V-shaped structure, the internal sliding sleeve of the puncture needle (1) is provided with a movable column (3), the tail end of the movable column (3) is fixedly connected to the operating base (4), the other end of the movable column (3) is fixedly installed with a fixed steel wire (5), the other end of the fixed steel wire (5) is fixedly installed with a steel wire bracket (6), one side of the steel wire bracket (6) is fixedly installed with an arc-shaped steel wire (7), the steel wire bracket (6) and the arc-shaped steel wire (7) as a whole form an oval frame structure, the outer edge side of the arc-shaped steel wire (7) is integrally formed with a conical tip (8), one side of the tip of the conical tip (8) is fixedly connected with a convex thorn (9), and the middle area of ​​the inner edge side of the arc-shaped steel wire (7) is provided with a wavy structure (10); The conical tip (8) is conical in shape as a whole, the angle between the conical tip (8) and the convex thorn (9) is A, and 0°<A<90°, the horizontal height of the middle of the wavy structure (10) is lower than the horizontal height of the two sides of the wavy structure (10), and the wavy structure (10) and the conical tip (8) are symmetrically distributed on the left and right side surfaces of the arc-shaped steel wire (7); The steel wire support (6) and the curved steel wire (7) satisfy the following rules in their movement postures: when the steel wire support (6) and the curved steel wire (7) are in a non-working state, the maximum width of the oval frame structure formed by the steel wire support (6) and the curved steel wire (7) as a whole is equal to the inner diameter of the puncture needle (1), and the steel wire support (6) and the curved steel wire (7) maintain a parallel posture with the V-shaped tip (2) to perform lateral output movement; When the steel wire support (6) and the curved steel wire (7) are in a working state, the maximum width of the oval frame structure formed by the steel wire support (6) and the curved steel wire (7) as a whole is greater than the inner diameter of the puncture needle (1), and the steel wire support (6) and the curved steel wire (7) maintain a vertical posture with the V-shaped tip (2) to perform lateral retraction movement.

2. The ultrasonic intervention sampling device according to claim 1, characterized in that: The puncture needle (1) is of a hollow structure as a whole, and a clearance fit is adopted between the puncture needle (1) and the movable column (3).

3. The ultrasonic intervention sampling device according to claim 1, characterized in that: The overall length of the movable column (3) is one third of the overall length of the puncture needle (1), and the overall length of the movable column (3), the fixed steel wire (5), the steel wire bracket (6) and the curved steel wire (7) is greater than the overall length of the puncture needle (1).

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

5. The ultrasonic intervention sampling device according to claim 1, characterized in that: The convex thorn (9) is in the form of a cone-shaped spike structure as a whole, and the tips of the convex thorn (9) and the cone-shaped tip (8) are both designed with sharp edges.

6. The ultrasonic intervention sampling device according to claim 1, characterized in that: The surface of the operating base (4) is provided with cross stripes, the diameter of the operating base (4) is larger than the diameter of the puncture needle (1), and the inner side surface of the wavy structure (10) is configured as a rough surface structure.

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