Percutaneous ablation needle

Abstract

The present application relates to the technical field of ablation needle, and specifically discloses a puncturable ablation needle, which comprises a handle, one end of the handle is provided with an ablation needle rod, one end of the ablation needle rod is fixedly connected with a microwave radiation needle head, and a microwave cable is connected between the microwave radiation needle head and the handle; a connecting seat is located outside the ablation needle rod; an adjusting mechanism is located outside the connecting seat; and a connecting mechanism is located between the handle and the ablation needle rod. The puncturable ablation needle is separated from the handle through the connecting mechanism, so that the weight of the free end of the ablation needle is reduced, the shaking range of the ablation needle rod during swallowing of the patient is reduced, and the ablation needle rod and the skin at the neck of the patient can be fixed through the adjusting mechanism, so that the ablation needle rod and the skin at the puncture site move together during swallowing of the patient, and the position of the microwave radiation needle head is prevented from being deviated due to swallowing of the patient.

Description

Technical Field

[0001] This invention relates to the field of ablation needle technology, specifically a puncturable ablation needle. Background Technology

[0002] Ablation needles are one of the commonly used tools in medicine, as shown in the attached diagram of the instruction manual. Figure 7 This tool is very thin, causing minimal damage to patients during puncture surgery. Any impact or loss of venous blood will be quickly recovered; generally, there are almost no visible traces of the needle ablation the next day. Ablation is a minimally invasive procedure, including microwave ablation and radiofrequency ablation. An ablation needle is inserted into the tumor, which can be benign or malignant, raising the temperature of the tumor cells to around 80°C, sometimes exceeding 100°C. This causes the tumor cells to denature and undergo coagulative necrosis, ultimately killing them. Microwave ablation uses microwaves directly for treatment, while radiofrequency ablation uses electrical energy converted into heat energy. It can be performed under ultrasound guidance and is a minimally invasive treatment method. After ultrasound detects the lesion, such as a thyroid nodule or a liver tumor, the ablation needle is inserted into the tumor for treatment.

[0003] When performing ablation on thyroid nodules: 1. The patient lies supine and is under general anesthesia. The neck incision is disinfected and draped with sterile towels. 2. First, the location of the thyroid nodule is located using Doppler ultrasound guidance, and the thyroid microwave ablation needle is connected to the microwave ablation instrument. 3. Under ultrasound guidance, a fine needle is inserted through the skin into the thyroid nodule, ensuring that the nodule is within a safe distance from the parathyroid gland and the carotid artery and vein. The microwave device is then turned on and the nodule is cauterized for 3 minutes. 4. The procedure is completed after the nodule is completely carbonized.

[0004] For some nodules with a large long diameter, doctors need to start ablation at the deepest part of the lesion and then gradually move it backward. However, due to the large size of the nodules and the long ablation time, doctors need to talk to the patient intermittently to avoid damage to the recurrent laryngeal nerve, judging whether to withdraw the needle based on changes in the patient's voice. When the patient speaks and swallows, the thyroid nodule is easily moved. Since the ablation needle is only fixed by inserting it into one end of the thyroid gland, if that end of the thyroid gland moves, the ablation needle will also move with the thyroid gland, easily causing the handle of the ablation needle to wobble and causing the puncture position to deviate, potentially injuring the patient. Therefore, we propose a puncture-compatible ablation needle. Summary of the Invention

[0005] The purpose of this invention is to provide a punctureable ablation needle to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a puncture-resistant ablation needle, comprising a handle, an ablation needle rod at one end of the handle, a microwave radiation needle tip fixedly connected to one end of the ablation needle rod, and a microwave cable connected between the microwave radiation needle tip and the handle; a connecting seat located outside the ablation needle rod; an adjustment mechanism located outside the connecting seat, the adjustment mechanism being able to adjust the insertion angle and depth of the ablation needle rod; and a connecting mechanism located between the handle and the ablation needle rod, the connecting mechanism being able to control the connection and separation of the handle and the ablation needle rod.

[0007] Preferably, the adjustment mechanism includes medical tapes fixedly connected to both ends below the connecting seat. Support plates are fixedly connected to both ends of the connecting seat on the side away from the medical tapes. A rotating cylinder is provided inside the two support plates. The ablation needle rod is located at the center of the rotating cylinder. A movable component capable of controlling the up and down movement of the rotating cylinder is provided outside the rotating cylinder. The movable component is connected to the support plates. An adjustment component capable of changing the angle of the ablation needle rod is provided inside the rotating cylinder.

[0008] Preferably, the movable component includes connecting rods located on both sides of the rotating cylinder. The inner wall of the rotating cylinder is provided with a sliding groove that can be slidably connected to the connecting rods. The end of the connecting rod near the sliding groove is provided with a positioning component that can position the connecting rod and the rotating cylinder. The inner wall of the support plate is provided with a moving groove that can be slidably connected to the connecting rods. A screw is threaded to the end of any connecting rod near the moving groove. One end of the screw passes through the inner wall of the support plate and is fixedly connected to a rotating handle.

[0009] Preferably, the positioning component includes multiple rubber strips fixedly connected to one end of the connecting rod near the rotating cylinder, and the inner wall of the sliding groove is provided with multiple engaging grooves that can engage with the rubber strips.

[0010] Preferably, the adjusting component includes a connecting sleeve located inside the rotating cylinder, the center of the connecting sleeve being fixedly connected to the ablation needle rod, a rotating rod being fixedly connected to the outside of the connecting sleeve, the rotating rod being rotatably connected to the inner wall of the rotating cylinder, one end of the rotating rod extending through the inner wall of the rotating cylinder and being fixedly connected to an adjusting handle, and a limiting component capable of fixing the rotating rod being provided on the outside of the rotating rod.

[0011] Preferably, the limiting component includes multiple rubber pads located on the outside of the rotating rod, and multiple positioning grooves that can engage with the rubber pads are provided on the inner wall of the rotating cylinder.

[0012] Preferably, the connecting mechanism includes multiple external threaded sleeves that are fixedly connected to the ablation needle rod and the handle respectively, the microwave cable is located inside the external threaded sleeves, and the two external threaded sleeves are threadedly connected to internal threaded sleeves on their outer sides.

[0013] Preferably, the side of the connector closest to the medical tape is concave.

[0014] Preferably, the connecting rod is T-shaped.

[0015] Preferably, the rubber strip has an arc-shaped end near the snap-fit ​​groove.

[0016] The present invention has at least the following beneficial effects:

[0017] In use, this application utilizes a connecting mechanism to connect and disconnect the ablation needle rod from the handle. An adjustment mechanism allows for adjustment of the insertion angle and depth of the ablation needle rod. Compared to existing technologies where swallowing during speech can easily cause thyroid nodules to move, and where the ablation needle is only fixed at one end of the thyroid gland, causing movement of the thyroid gland and the needle moving along with it, potentially leading to wobbling of the handle and misalignment of the needle's puncture point, thus causing injury to the patient, this application addresses this issue by using a connecting mechanism... This design separates the ablation needle rod from the handle, reducing the weight of the suspended end of the ablation needle and minimizing the shaking of the rod when the patient swallows. The handle powers the microwave-guided needle tip via a microwave cable to heat it. An adjustable mechanism secures the ablation needle rod to the skin on the patient's neck, allowing the rod to move with the skin at the puncture site when the patient swallows, preventing the needle tip from shifting position during swallowing. The adjustable mechanism also allows doctors to easily adjust the insertion angle and depth of the ablation needle rod to ablate other areas of the lesion, reducing the difficulty of the procedure. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram showing the separation of the structural connection mechanism of the present invention;

[0020] Figure 3 This is a schematic diagram of the front sectional view of the rotating cylinder of the present invention;

[0021] Figure 4 This is a top sectional view of the rotating cylinder of the present invention;

[0022] Figure 5 This is a side sectional view of the rotating cylinder of the present invention;

[0023] Figure 6 This is a side sectional view of the positioning groove of the present invention;

[0024] Figure 7 This is a schematic diagram of an ablation needle.

[0025] In the diagram: 1-Handle; 2-Ablation needle rod; 3-Microwave radiation needle tip; 4-Microwave cable; 5-Connecting seat; 6-Adjusting mechanism; 60-Medical tape; 61-Support plate; 62-Rotating cylinder; 63-Moving component; 64-Adjusting component; 65-Connecting rod; 66-Sliding groove; 67-Positioning component; 68-Moving groove; 69-Screw; 610-Rotating handle; 611-Rubber strip; 612-Snap-fit ​​groove; 613-Connecting sleeve; 614-Rotating rod; 615-Adjusting handle; 616-Limiting component; 617-Rubber pad; 618-Positioning groove; 619-Arc-shaped end; 7-Connecting mechanism; 70-External threaded sleeve; 71-Internal threaded sleeve. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-6 :

[0028] Example 1

[0029] This invention provides a technical solution: a punctureable ablation needle, comprising a handle 1, an ablation needle rod 2 located at one end of the handle 1, a microwave radiation needle tip 3 fixedly connected to one end of the ablation needle rod 2, and a microwave cable 4 connected between the microwave radiation needle tip 3 and the handle 1; a connecting seat 5, made of silicone to conform to the skin of the patient's neck, improving patient comfort, and located on the outside of the ablation needle rod 2; an adjustment mechanism 6, located on the outside of the connecting seat 5, capable of adjusting the insertion angle and depth of the ablation needle rod 2; and a connecting mechanism 7, connecting... Mechanism 7 is located between handle 1 and ablation needle rod 2. Mechanism 7 controls the connection and separation of handle 1 and ablation needle rod 2. During use, mechanism 7 connects handle 1 to ablation needle rod 2. The doctor moves ablation needle rod 2 using handle 1, positioning connector 5 at the patient's neck. Under ultrasound guidance, the position of connector 5 is determined. Adjustment mechanism 6 connects connector 5 to the skin at the patient's neck. Mechanism 7 then separates handle 1 from ablation needle rod 2. Handle 1 is energized to the microwave radiation needle tip 3 via microwave cable 4. The doctor, under ultrasound guidance, adjusts the handle 1 to the needle tip 2. The adjustment mechanism 6 controls the puncture position and depth of the microwave irradiation needle 3. Compared to existing technologies where the doctor holds the handle 1 to control the insertion position of the microwave irradiation needle 3, the ablation needle rod 2 is relatively long and small in diameter. Furthermore, in some patients with hard thyroid glands, applying force to the handle 1 can easily cause the ablation needle rod 2 to bend. This application, through the adjustment mechanism 6, directs the force application onto the surface of the ablation needle rod 2, significantly reducing the risk of bending and allowing the doctor to easily control the insertion angle and depth of the ablation needle rod 2. When the patient swallows, the adjustment mechanism 6... The connecting mechanism 7 separates the ablation needle rod 2 from the handle 1, thereby reducing the weight of the externally suspended end of the ablation needle and reducing the shaking amplitude of the ablation needle rod 2 when the patient swallows. The handle 1 powers the microwave radiation needle 3 through the microwave cable 4 to cooperate in heating the microwave radiation needle 3. The microwave radiation needle 3 ablates the thyroid lesion. The adjustment mechanism 6 can fix the ablation needle rod 2 to the skin of the patient's neck, so that when the patient swallows, the ablation needle rod 2 moves the skin of the puncture site together, avoiding the displacement of the microwave radiation needle 3 caused by the patient swallowing.

[0030] The adjustment mechanism 6 includes medical tapes 60 fixedly connected to both ends of the connecting seat 5. The side of the connecting seat 5 closest to the medical tapes 60 is concave to fit the skin on the patient's neck. Support plates 61 are fixedly connected to both ends of the connecting seat 5 furthest from the medical tapes 60. A rotating cylinder 62 is located inside the two support plates 61, and the ablation needle rod 2 is located at the center of the rotating cylinder 62. A movable component 63 is provided on the outside of the rotating cylinder 62 to control its up and down movement. The movable component 63 is connected to the support plates 61. An adjustment component 64 is provided on the inside of the rotating cylinder 62 to change the angle of the ablation needle rod 2. When the adjustment mechanism 6 is working, the doctor folds up the skin on the patient's neck using the medical tapes 60 at both ends of the connecting seat 5. It is glued and fixed to the connecting seat 5. The angle of the ablation needle rod 2 can be adjusted by the setting adjustment component 64, thereby controlling the entry angle of the microwave radiation needle 3. The movement component 63 can control the movement of the ablation needle rod 2 so that the microwave radiation needle 3 can enter the patient's body. The movement component 63 and the adjustment component 64 work together to reduce the difficulty of operation for doctors. When ablation is performed on the patient's thyroid lesion, if the patient swallows, because human skin is elastic, the connecting seat 5 folds the skin of the patient's neck before gluing it. When the thyroid gland moves the ablation needle rod 2, the ablation needle rod 2 moves the folded skin synchronously with the movement of the thyroid gland, reducing the resistance of the skin of the patient's neck to the ablation needle rod 2.

[0031] The movable component 63 includes connecting rods 65 located on both sides of the rotating cylinder 62. The connecting rods 65 are T-shaped to engage with the sliding groove 66. The inner wall of the rotating cylinder 62 has a sliding groove 66 that can slide with the connecting rods 65. The end of the connecting rod 65 near the sliding groove 66 has a positioning component 67 that can position the connecting rod 65 and the rotating cylinder 62. The inner wall of the support plate 61 has a moving groove 68 that can slide with the connecting rod 65. A screw 69 is threaded to the end of any connecting rod 65 near the moving groove 68. One end of the screw 69 is rotatably connected to the inner wall of the support plate 61, and the other end of the screw 69 protrudes from the inner wall of the support plate 61. The fixed connection is equipped with a rotating handle 610. When the moving part 63 is working, the positioning part 67 releases the positioning of the connecting rod 65. The doctor rotates the rotating cylinder 62 to make the connecting rod 65 slide along the inner wall of the sliding groove 66, thereby changing the position of the adjusting part 64. When the adjusting part 64 controls the tilt of the ablation needle rod 2, the tilt angle of the ablation needle rod 2 changes. Furthermore, the doctor rotates the rotating handle 610 to drive the screw 69 to rotate. The screw 69 drives the outer connecting rod 65 to slide along the inner wall of the moving groove 68, thereby adjusting the insertion depth of the microwave radiation needle 3 and reducing the difficulty for the doctor to control the insertion position of the microwave radiation needle 3.

[0032] The positioning component 67 includes multiple rubber strips 611 fixedly connected to the end of the connecting rod 65 near the rotating cylinder 62. The end of the rubber strip 611 near the locking groove 612 is provided with an arc-shaped end 619. The inner wall of the sliding groove 66 is provided with multiple locking grooves 612 that can engage with the rubber strips 611. When the positioning component 67 is working, according to the elasticity of the rubber strips 611, when the user rotates the rotating cylinder 62, the locking grooves 612 on the inner wall of the rotating cylinder 62 squeeze the arc-shaped end 619 of the rubber strips 611, thereby causing the rubber strips 611 to deform. When the rubber strips 611 move into the adjacent locking grooves 612, the rubber strips 611 reset and engage with the locking grooves 612 again to fix the rotating cylinder 62. The structure is simple and avoids the large resistance of the ablation needle rod 2 when it moves.

[0033] The adjusting component 64 includes a connecting sleeve 613 located inside the rotating cylinder 62. The center of the connecting sleeve 613 is fixedly connected to the ablation needle rod 2. A rotating rod 614 is fixedly connected to the outside of the connecting sleeve 613. The rotating rod 614 is rotatably connected to the inner wall of the rotating cylinder 62. One end of the rotating rod 614 extends through the inner wall of the rotating cylinder 62 and is fixedly connected to an adjusting handle 615. A limiting member 616 is provided on the outside of the rotating rod 614 to fix the rotating rod 614. When the adjusting component 64 is working, the fixing between the rotating rod 614 and the rotating cylinder 62 is released through the limiting member 616. The doctor rotates the adjusting handle 615, which drives the rotating rod 614 to rotate. The rotating rod 614 drives the connecting sleeve 613 to rotate. The connecting sleeve 613 causes the ablation needle rod 2 to tilt so that the microwave radiation needle 3 can enter the thyroid lesion at different angles, reducing the difficulty of operation for the doctor.

[0034] The limiting component 616 includes multiple rubber pads 617 located outside the rotating rod 614. The inner wall of the rotating cylinder 62 has multiple positioning grooves 618 that can engage with the rubber pads 617. When the limiting component 616 is working, because the rubber pads 617 are elastic, when the doctor rotates the adjusting handle 615, the adjusting handle 615 drives the rotating rod 614 to rotate, and the rotating rod 614 drives the rubber pads 617 to rotate, thereby causing the rubber pads 617 to press against the inner wall of the positioning grooves 618. The rubber pads 617 deform and detach from the positioning grooves 618. When the deformed rubber pads 617 enter the next positioning groove 618, the rubber pads 617 restore their shape and engage with the positioning grooves 618 again, thereby rotating the rotating rod 614 again to cooperate with the doctor to adjust the insertion angle of the microwave radiation needle 3.

[0035] The connecting mechanism 7 includes multiple external threaded sleeves 70 that are fixedly connected to the ablation needle rod 2 and the handle 1 respectively. The microwave cable 4 is located inside the external threaded sleeves 70. The two external threaded sleeves 70 are connected to the internal threaded sleeves 71 by threads on their outer sides. When the connecting mechanism 7 is working, the doctor rotates the internal threaded sleeve 71 to move the internal threaded sleeve 71 downward, thereby releasing the connection between the internal threaded sleeve 71 and the two external threaded sleeves 70. The doctor can then separate the handle 1 from the ablation needle rod 2, so that the microwave radiation needle 3 is connected to the handle 1 through the microwave cable 4, reducing the weight of the suspended end of the ablation needle rod 2, thereby preventing the microwave radiation needle 3 from shaking inside the thyroid gland.

[0036] Example 2

[0037] In this second embodiment, the other structures remain unchanged. The difference from the first embodiment is that the medical tape 60 and the connecting seat 5 are fixed by adhesive. After the patient's ablation is completed, the doctor can peel the medical tape 60 off the connecting seat 5 and use the two medical tapes 60 to position the neck patch. This makes it easier for the doctor to apply the neck patch to the injection site on the patient's neck. After the connecting seat 5 is separated from the medical tape 60, it is convenient to disinfect the connecting seat 5.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A puncture-resistant ablation needle, comprising: Handle (1), one end of the handle (1) is provided with an ablation needle rod (2), one end of the ablation needle rod (2) is fixedly connected with a microwave radiation needle (3), and a microwave cable (4) is connected between the microwave radiation needle (3) and the handle (1). Its features are: Connecting seat (5), the connecting seat (5) is located outside the ablation needle rod (2); Adjustment mechanism (6), located outside the connecting seat (5), the adjustment mechanism (6) can adjust the insertion angle and depth of the ablation needle rod (2); A connecting mechanism (7) is located between the handle (1) and the ablation needle rod (2). The connecting mechanism (7) can control the connection and separation of the handle (1) and the ablation needle rod (2). The adjustment mechanism (6) includes medical tape (60) fixedly connected to both ends of the lower part of the connecting seat (5). Support plates (61) are fixedly connected to both ends of the connecting seat (5) away from the medical tape (60). Rotating cylinders (62) are provided inside the two support plates (61). The ablation needle rod (2) is located at the center of the rotating cylinder (62). A moving part (63) capable of controlling the up and down movement of the rotating cylinder (62) is provided outside the rotating cylinder (62). The moving part (63) is connected to the support plate (61). An adjustment part (64) capable of changing the angle of the ablation needle rod (2) is provided inside the rotating cylinder (62). The movable component (63) includes connecting rods (65) located on both sides of the rotating cylinder (62). The inner wall of the rotating cylinder (62) is provided with a sliding groove (66) that can be slidably connected with the connecting rods (65). The end of the connecting rod (65) near the sliding groove (66) is provided with a positioning component (67) that can position the connecting rod (65) and the rotating cylinder (62). The inner wall of the support plate (61) is provided with a moving groove (68) that can be slidably connected with the connecting rod (65). A screw (69) is threadedly connected to the end of any connecting rod (65) near the moving groove (68). One end of the screw (69) passes through the inner wall of the support plate (61) and is fixedly connected with a rotating handle (610). The adjusting component (64) includes a connecting sleeve (613) located inside the rotating cylinder (62). The center of the connecting sleeve (613) is fixedly connected to the ablation needle rod (2). A rotating rod (614) is fixedly connected to the outside of the connecting sleeve (613). The rotating rod (614) is rotatably connected to the inner wall of the rotating cylinder (62). One end of the rotating rod (614) extends through the inner wall of the rotating cylinder (62) and is fixedly connected to an adjusting handle (615). A limiting component (616) is provided on the outside of the rotating rod (614) to fix the rotating rod (614).

2. The puncture-resistant ablation needle according to claim 1, characterized in that: The positioning component (67) includes a plurality of rubber strips (611) fixedly connected to one end of the connecting rod (65) near the rotating cylinder (62), and the inner wall of the sliding groove (66) is provided with a plurality of snap-fit ​​grooves (612) that can snap into the rubber strips (611).

3. The punctureable ablation needle according to claim 1, characterized in that: The limiting member (616) includes a plurality of rubber pads (617) located outside the rotating rod (614), and the inner wall of the rotating cylinder (62) is provided with a plurality of positioning grooves (618) that can engage with the rubber pads (617).

4. The punctureable ablation needle according to claim 1, characterized in that: The connecting mechanism (7) includes multiple external threaded sleeves (70) that are fixedly connected to the ablation needle rod (2) and the handle (1) respectively. The microwave cable (4) is located inside the external threaded sleeves (70), and the two external threaded sleeves (70) are threadedly connected to the outer sides of the internal threaded sleeves (71).

5. The punctureable ablation needle according to claim 1, characterized in that: The connector (5) is concave on the side near the medical tape (60).

6. The punctureable ablation needle according to claim 1, characterized in that: The connecting rod (65) is T-shaped.

7. The punctureable ablation needle according to claim 2, characterized in that: The rubber strip (611) has an arc-shaped end (619) near the snap-fit ​​groove (612).

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