Thyroid puncture device

Abstract

The application provides a thyroid puncture device and belongs to the technical field of medical devices. The device comprises a fixing seat, a needle cylinder connected to the fixing seat, a needle sheath connected to the end of the needle cylinder, a needle core inserted into the needle sheath, a piston rod connected to the inner wall of the needle cylinder, and a rubber plug connected to the end of the piston rod. A supporting mechanism is used to assist medical staff in holding the needle cylinder, and a puncture mechanism is used to assist medical staff in thyroid puncture surgery. The puncture mechanism has two use states, and the two use states of the puncture device correspond to capillary method and negative pressure suction method for thyroid puncture, respectively. The device can implement two different puncture methods for the thyroid, reduces the cost of surgical operation, improves the flexibility of surgical operation, and enables medical staff to select appropriate puncture methods according to actual conditions.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a thyroid puncture device. Background Technology

[0002] A thyroid biopsy device is a medical instrument used to perform fine-needle aspiration biopsy of the thyroid gland under real-time ultrasound guidance. Common puncture methods with thyroid biopsies include manual negative pressure aspiration and capillary aspiration. In the manual negative pressure method, the medical staff first uses an ultrasound probe to observe the location of the thyroid gland, then precisely inserts the puncture needle into the thyroid gland, and subsequently uses a syringe to provide negative pressure to the puncture needle to aspirate the cells inside the thyroid gland. In the capillary aspiration method, the puncture needle consists of an "inner needle" and an "outer needle." In practice, the medical staff first uses an ultrasound probe to simultaneously insert the inner and outer needles. The needle is inserted into the thyroid gland, then the outer needle is fixed and the inner needle is withdrawn. At this time, under the action of capillary action and tissue micro-pressure, the cells will autonomously enter the needle cavity. Of the two puncture methods mentioned above, the negative pressure aspiration method for thyroid puncture has the problem that the blood components are too large, which leads to the dilution of thyroid cells and affects subsequent operations; the capillary method for thyroid puncture has the disadvantage of insufficient sampling of some hard or fibrotic nodules. Medical personnel need to select the appropriate puncture method according to the patient's condition. Therefore, in order to improve the puncture effect of the thyroid puncture device, this invention provides a thyroid puncture device to meet the needs. Summary of the Invention

[0003] The technical problem to be solved by this invention is to provide a thyroid puncture device. By setting a puncture mechanism, the puncture device has two operating states, which correspond to two operation methods for thyroid puncture: the capillary method and the negative pressure aspiration method. This setting allows a single puncture device to perform two different puncture methods on the thyroid gland, reducing the cost of surgical operations, improving the flexibility of surgical operations, and enabling medical personnel to choose the appropriate puncture method according to the actual situation. Through the above setting, the problem of the current puncture device having only one method of use and poor puncture effect can be solved.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0005] A thyroid biopsy device includes a fixed base and a syringe inserted into the fixed base. A needle sheath is inserted into the end of the syringe, a needle core is inserted inside the needle sheath, and a needle sleeve is fitted over the needle sheath. A piston rod is slidably connected to the inner wall of the syringe, and a rubber stopper is fitted to the end of the piston rod. A support mechanism is used to assist medical personnel in holding the syringe, and the support mechanism is connected to the fixed base. A puncture mechanism is used to assist medical personnel in performing thyroid biopsy, and the puncture mechanism is connected to both the support mechanism and the piston rod.

[0006] Optionally, the support mechanism includes a limiting slide rod fixedly connected to the top of the fixed base, a push-pull seat slidably connected to the outer wall of the limiting slide rod, and a hand grip plate fixedly connected to the end of the limiting slide rod away from the fixed base.

[0007] Optionally, the limiting slide rods are two symmetrically distributed on both sides of the top of the fixed base. The side of the hand grip plate closest to the limiting slide rods is a flat plate structure, and the other side of the hand grip plate has an arc-shaped contour that is adapted to the contour of a human hand. An avoidance hole is provided through the hand grip plate, and a fixing clamp is fixedly connected to the side of the fixed base away from the limiting slide rods.

[0008] Optionally, the fixing seat has a groove that matches the outline of the syringe, the syringe is inserted into the groove on the fixing seat, the inner circumference of the fixing plate matches the outer circumference of the syringe, the push-pull seat has an adjustment groove, and an adjustment knob is screwed onto the side of the push-pull seat near the hand grip plate, the adjustment knob extends from the end of the push-pull seat into the adjustment groove.

[0009] Optionally, the puncture mechanism includes an inner push rod slidably connected within the piston rod. One end of the inner push rod is fixedly connected to a sealing plate. The outer circumference of the inner push rod is smaller than that of the outer circumference of the sealing plate. The other end of the inner push rod is inserted into the push-pull seat and extends into the adjustment groove to abut against the adjustment knob. The outer circumference of the sealing plate is adapted to the inner circumference of the piston rod. A spring is fixedly connected to the side of the sealing plate away from the inner push rod, and a biting plate is installed at the end of the spring away from the sealing plate.

[0010] Optionally, a snap-fit ​​block is fixedly connected to the outer wall of the piston rod, the outer circumference of the snap-fit ​​block is larger than the outer circumference of the piston rod, and a snap-fit ​​portion adapted to the contour of the snap-fit ​​block is fixedly connected to the rubber plug.

[0011] Optionally, an expansion portion is fixedly connected to the rubber stopper, and the expansion portion has a corrugated profile.

[0012] Optionally, the bite plate is fixedly connected to a bite part at its end, the end of the bite part having a triangular profile, and the bite plate and the needle core are locked together by the bite part.

[0013] Optionally, a bent portion is fixedly connected at the connection position between the biting part and the biting plate, and the bent portion bends the connection position between the biting part and the biting plate.

[0014] Optionally, the hand grip plate, the limiting slide bar, the push-pull seat, and the fixing seat are all made of plastic.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above scheme, by setting up a puncture mechanism, the puncture device has two usage states, and the two usage states correspond to the capillary method and the negative pressure aspiration method for thyroid puncture. This setting allows a single puncture device to perform two different puncture methods on the thyroid gland, reducing the cost of surgical operations, improving the flexibility of surgical operations, allowing medical personnel to choose the appropriate puncture method according to the actual situation, improving the practicality of the puncture device, and reducing the inadequacy of puncture device use.

[0017] By setting up a support mechanism, and because the contour of the hand-held plate is adapted to the contour of the human palm, and an adjustment groove is opened on the push-pull seat, medical personnel can insert their index and middle fingers into the adjustment groove during actual operation, and then bend their palm so that the palm rests on the hand-held plate. At this time, when the medical personnel bend their index and middle fingers, they can pull the push-pull seat to slide on the limiting slide rod. Compared with the traditional manual way of holding the syringe, the above structure makes it simpler and more convenient for medical personnel to hold the syringe, and makes the sliding operation of the piston rod more convenient and efficient, thereby reducing the difficulty of puncture operation and improving the accuracy of surgery. Attached Figure Description

[0018] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0019] Figure 1 A three-dimensional schematic diagram of a thyroid puncture device;

[0020] Figure 2 A three-dimensional schematic diagram of the explosion of a thyroid puncture device;

[0021] Figure 3 Enlarged 3D structural diagram to support the mechanism;

[0022] Figure 4 A three-dimensional cross-sectional schematic diagram of a thyroid biopsy instrument;

[0023] Figure 5 A cross-sectional three-dimensional structural diagram of the puncture mechanism;

[0024] Figure 6 for Figure 5 Enlarged 3D structural diagram at point A in the middle;

[0025] Figure 7 for Figure 5 Enlarged 3D structural diagram at point B.

[0026] Figure label:

[0027] 1. Hand grip plate; 2. Clearance hole; 3. Limiting slide bar; 4. Push-pull seat; 5. Adjustment groove; 6. Adjustment knob; 7. Fixing seat; 8. Fixing clamp; 9. Syringe; 10. Needle sheath; 11. Needle core; 12. Needle sleeve; 13. Piston rod; 14. Clamping block; 15. Rubber plug; 16. Clamping part; 17. Expansion part; 18. Inner push rod; 19. Sealing plate; 20. Spring; 21. Engaging plate; 22. Engaging part; 23. Bending part.

[0028] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0029] The thyroid puncture device provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should also be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0030] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0031] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0032] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0033] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0034] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a thyroid puncture device, including a fixing seat 7 and a syringe 9 clamped on the fixing seat 7. A needle sheath 10 is inserted into the end of the syringe 9, a needle core 11 is inserted into the needle sheath 10, and a needle sleeve 12 is fitted over the needle sheath 10. A piston rod 13 is slidably connected to the inner wall of the syringe 9, and a rubber stopper 15 is fitted to the end of the piston rod 13. In this technical solution, the needle sheath 10 and the needle core 11 constitute the main body of the puncture needle. The puncture needle composed of the needle sheath 10 and the needle core 11 is a common and mature prior art at present. Therefore, both are disclosed as prior art in this application and will not be described in detail. The syringe 9 is the barrel part of the syringe. In this technical solution, the working principle of the syringe 9 in cooperation with the needle sheath 10 and the needle core 11 is also disclosed as prior art and will not be described in detail here.

[0035] As one implementation method in this embodiment, such as Figures 1 to 4As shown, the support mechanism assists medical personnel in holding the syringe 9. The support mechanism is connected to the fixed base 7 and includes a limiting slide rod 3 fixedly connected to the top of the fixed base 7. A push-pull seat 4 is slidably connected to the outer wall of the limiting slide rod 3. A hand grip plate 1 is fixedly connected to the end of the limiting slide rod 3 away from the fixed base 7. The hand grip plate 1, limiting slide rod 3, push-pull seat 4, and fixed base 7 are all made of plastic. The limiting slide rod 3 consists of two symmetrically distributed rods on both sides of the top of the fixed base 7. The side of the hand grip plate 1 closest to the limiting slide rod 3 has a flat plate structure, while the other side has an arc-shaped contour that conforms to the contour of a human hand. A fixing clamp 8 is fixedly connected to the side of the fixed base 7 away from the limiting slide rod 3. An opening for the syringe 9 is provided inside the fixed base 7. The syringe 9 is inserted into the groove on the fixed base 7 with a groove that matches its contour. The inner circumference of the fixed clamp 8 matches the outer circumference of the syringe 9. The push-pull base 4 has an adjustment groove 5. This technical solution can facilitate medical personnel to hold and operate the syringe 9 by setting a support mechanism. Specifically, since the fixed base 7 has a groove that matches the contour of the syringe 9, the syringe 9 can be directly inserted into the groove on the fixed base 7 and the fixed base 7 can limit and fix the syringe 9. In order to further ensure the stability of the syringe 9, a fixed clamp 8 that matches the size of the syringe 9 is fixed on the fixed base 7. The fixed clamp 8 can wrap and limit the syringe 9, thereby preventing the syringe 9 from being misaligned and detached on the fixed base 7, and further improving the stability of the syringe 9.

[0036] The gripper plate 1 and the fixed base 7 are fixed together by a limiting slide bar 3. The push-pull base 4 can slide freely on the limiting slide bar 3 between the gripper plate 1 and the fixed base 7. The push-pull base 4 has a groove that matches the contour of the piston rod 13. Therefore, the piston rod 13 can be directly inserted into the groove on the push-pull base 4 and locked together with the push-pull base 4. The locking method between the piston rod 13 and the push-pull base 4 is the same as the locking method between the syringe 9 and the fixed base 7. Therefore, when the push-pull base 4 slides on the limiting slide bar 3, the piston rod 13 will slide inside the syringe 9 under the driving action of the push-pull base 4.

[0037] Furthermore, since the contour of the hand-held plate 1 is adapted to the contour of the palm of a person, and the push-pull seat 4 has an adjustment groove 5, medical personnel can insert their index and middle fingers into the adjustment groove 5 during actual operation, and then bend their palm so that the palm is placed on the hand-held plate 1. At this time, when the medical personnel bend their index and middle fingers, they can pull the push-pull seat 4 to slide on the limiting slide rod 3. Compared with the traditional manual holding method of the syringe 9, the upper structure makes it simpler and more convenient for medical personnel to hold the syringe 9, and makes the sliding operation of the piston rod 13 more convenient and efficient, thereby reducing the difficulty of puncture operation and improving the accuracy of surgery.

[0038] As one implementation method in this embodiment, such as Figures 1 to 6 As shown, the puncture mechanism is used to assist medical personnel in performing thyroid puncture surgery. The puncture mechanism is connected to the support mechanism and the piston rod 13. The puncture mechanism includes an inner push rod 18 slidably connected within the piston rod 13. One end of the inner push rod 18 is fixedly connected to a sealing plate 19. The outer circumference of the inner push rod 18 is smaller than the outer circumference of the sealing plate 19. The outer circumference of the sealing plate 19 is adapted to the inner circumference of the piston rod 13. A locking block 14 is fixedly connected to the outer wall of the piston rod 13. The outer circumference of the locking block 14 is larger than the outer circumference of the piston rod 13. A rubber stopper 15 is fixedly connected to... The snap-fit ​​part 16 of the snap-fit ​​block 14 is adapted to the contour of the snap-fit ​​part 16. An expansion part 17 is fixedly connected to the rubber plug 15. The expansion part 17 has a corrugated contour. An adjustment knob 6 is screwed to the side of the push-pull seat 4 near the hand grip plate 1. The adjustment knob 6 extends from the end of the push-pull seat 4 into the adjustment groove 5. An avoidance hole 2 is provided through the hand grip plate 1. The other end of the inner push rod 18 is inserted into the push-pull seat 4 and extends into the adjustment groove 5, abutting against the adjustment knob 6. Compared with the prior art, the piston rod 13 and the rubber plug 15 in the syringe 9 are improved in this technical solution. Specifically, the rubber plug 15 is snapped and fixed to the outside of the piston rod 13. The piston rod 13 and the rubber stopper 15 are fixed together by a locking block 14 and a locking part 16. The piston rod 13 is composed of two cylindrical structures of different sizes. The cylindrical structure of the part on the piston rod 13 where the locking block 14 is installed is larger than the other cylindrical structure. To facilitate the arrangement of the two cylindrical structures on the piston rod 13, the piston rod 13 is divided into cylindrical body one and cylindrical body two. Cylindrical body one is the larger structure near the locking block 14. The inner push rod 18 is inserted into the cylindrical body two of the piston rod 13, and the sealing plate 19 is inserted into the cylindrical body one of the piston rod 13. The inner push rod 18 and the sealing plate 19 are respectively connected to the cylindrical body of the piston rod 13. The dimensions of the second cylinder are compatible with those of the first cylinder. When the inner push rod 18 slides inside the second cylinder of the piston rod 13, the sealing plate 19 slides inside the first cylinder of the piston rod 13. During the sliding process, the sealing plate 19 will compress the gas inside the rubber stopper 15, causing the expansion part 17 on the rubber stopper 15 to expand outward under the compression of the gas. Before expansion, the size of the expansion part 17 is smaller than the size of the inner wall of the syringe 9 and is not in contact with the syringe 9. After expansion, the expansion part 17 will fit tightly against the inner wall of the syringe 9 to seal the syringe 9. The above structure allows for two operating states between the piston rod 13 and the rubber stopper 15.

[0039] In the first usage state, medical personnel directly push the push-pull seat 4 to slide on the limit slide rod 3. The push-pull seat 4 will drive the piston rod 13 to slide directly inside the syringe 9. During the sliding of the piston rod 13, the rubber stopper 15 will slide with the piston rod 13 inside the syringe 9. Since the expansion part 17 does not expand, the rubber stopper 15 will not squeeze the air inside the syringe 9 during the sliding process, and will not squeeze the air inside the syringe 9 into the needle sheath 10 and the needle core 11.

[0040] In the second usage state, the medical staff first turns the adjustment knob 6. Under the action of the thread drive, the adjustment knob 6 will squeeze the inner push rod 18, causing the inner push rod 18 and the sealing plate 19 to slide inside the piston rod 13. During the sliding process, the sealing plate 19 will squeeze the gas inside the rubber stopper 15, causing the expansion part 17 to inflate and press against the inner wall of the syringe 9. At this time, the rubber stopper 15 will seal the syringe 9. Then, the medical staff pushes the push-pull seat 4. At this time, the push-pull seat 4 will drive the piston rod 13 to slide inside the syringe 9. During the sliding process of the piston rod 13, the rubber stopper 15 will squeeze the gas inside the syringe 9 and push the gas into the needle sheath 10 and the needle core 11.

[0041] In summary, the two operating states of the piston rod 13 and the rubber stopper 15 correspond to two different operating methods for thyroid puncture using the puncture device. Operating state one corresponds to the capillary method, and operating state two corresponds to the negative pressure aspiration method. This design allows a single puncture device to perform two different puncture methods on the thyroid gland, reducing the cost of the surgical procedure, increasing the flexibility of the surgical procedure, enabling medical personnel to choose the appropriate puncture method according to the actual situation, improving the practicality of the puncture device, and reducing the inadequacy of its use.

[0042] In this embodiment, as Figures 1 to 7As shown, a spring 20 is fixedly connected to the side of the sealing plate 19 away from the inner push rod 18. A biting plate 21 is installed at the end of the spring 20 away from the sealing plate 19. A biting part 22 is fixedly connected to the end of the biting plate 21. The end of the biting part 22 has a triangular profile. The biting plate 21 and the needle core 11 are fixedly engaged together by the biting part 22. A bent part 23 is fixedly connected at the connection position between the biting part 22 and the biting plate 21. The bent part 23 bends the connection position between the biting part 22 and the biting plate 21. When the biting plate 21 moves toward the needle core 11, the biting part 22 will first contact the needle core 11. 2 is a triangular outline. When the biting part 22 comes into contact with the needle core 11, under the guidance of the triangular inclined surface of the biting part 22, the biting part 22 will bend and expand outward at the position of the bending part 23. After the biting part 22 expands and deforms outward, it continues to push the biting plate 21 to move towards the needle core 11. At this time, the biting part 22 will be locked and fixed together with the needle core 11. When the biting plate 21 is pulled back in the opposite direction, under the locking action of the biting part 22, the biting plate 21 will drive the needle core 11 to move together. In the above structure, the biting part 22 is a segmented structure. This structure makes it easier for the biting part 22 to expand and deform outward and lock and fix itself on the needle core 11.

[0043] As mentioned above, the two operating states of the piston rod 13 and the rubber stopper 15 correspond to the two puncture methods of the puncture device, specifically:

[0044] In the capillary method, medical personnel assemble the needle sheath 10 and needle core 11 to the end of the syringe 9, and then fix the syringe 9 to the fixing seat 7. Under ultrasound guidance, the needle sheath 10 and needle core 11 are simultaneously inserted into the patient's thyroid gland. Then, the push-pull seat 4 is slid to move the occlusal plate 21 toward the needle core 11. When the occlusal part 22 contacts the needle core 11, the occlusal plate 21 is pushed further. At this time, the occlusal part 22 will expand outward and deform and be fixed together with the needle core 11. After the occlusal part 22 is locked together with the needle core 11, the medical personnel pull the push-pull seat 4 in the opposite direction. At this time, the occlusal part 22 will remove the needle core 11 from the needle sheath 10. After the needle core 11 is removed, a cavity will be formed in the needle sheath 10. Relying on capillary action and tissue pressure, the cells in the thyroid gland will automatically fill the cavity in the needle sheath 10. The medical personnel observe the cell filling through ultrasound. After the cells are filled, the needle sheath 10 is removed to complete the puncture operation.

[0045] In the negative pressure aspiration method, medical personnel assemble a single needle sheath 10 onto the end of the syringe 9, then clip and fix the syringe 9 onto the fixing seat 7. Under ultrasound guidance, the needle sheath 10 is inserted into the patient's thyroid gland. Then, the adjusting knob 6 is turned to push the inner push rod 18 towards the end of the piston rod 13. During the sliding of the inner push rod 18, the sealing plate 19 will compress the gas inside the rubber stopper 15, causing the expansion part 17 to expand outward. After the expansion part 17 expands, it will fit tightly against the inner wall of the syringe 9. At this time, the push-pull seat 4 is pulled back so that the piston rod 13 cooperates with the expanded expansion part 17 to aspirate the gas in the syringe 9. During the process of aspirating the gas in the syringe 9, negative pressure is generated in the syringe 9 and the needle sheath 10. At this time, the cells inside the thyroid gland will be drawn into the needle sheath 10. Medical personnel observe the cell filling situation through ultrasound. After the cells are filled, the needle sheath 10 is removed to complete the puncture operation.

[0046] The working principle of the technical solution provided by this invention is as follows:

[0047] In the capillary method, medical personnel first assemble the needle sheath 10 and needle core 11 into the end of the syringe 9, then clamp and fix the syringe 9 onto the fixing seat 7. At this time, the medical personnel insert their index and middle fingers into the adjustment groove 5, then bend their palm and place it on the hand grip plate 1. Under ultrasound guidance, the needle sheath 10 and needle core 11 are simultaneously inserted into the patient's thyroid gland. Then, the index and middle fingers are straightened and the push-pull seat 4 is slid to move the occlusal plate 21 toward the needle core 11. When the occlusal part 22 contacts the needle core 11, the occlusal plate 21 is continued to be pushed. Under the guidance of the triangular inclined surface of the occlusal part 22, the occlusal part 22 will move at the position of the bend 23. The thyroid gland bends and expands outward, and after the occlusal part 22 expands and deforms outward, it continues to push the occlusal plate 21 towards the needle core 11. At this time, the occlusal part 22 will be locked together with the needle core 11. After the occlusal part 22 is locked together with the needle core 11, the medical staff bends the index and middle fingers and pulls the push-pull seat 4 in the opposite direction. At this time, the occlusal part 22 will remove the needle core 11 from the needle sheath 10. After the needle core 11 is removed, a cavity will be formed in the needle sheath 10. Relying on capillary action and tissue pressure, the cells in the thyroid gland will automatically fill the cavity in the needle sheath 10. The medical staff observes the cell filling situation through ultrasound. After the cells are filled, the needle sheath 10 can be removed to complete the puncture operation.

[0048] In the negative pressure aspiration method, medical personnel insert and assemble a single needle sheath 10 into the end of the syringe 9, then clip the syringe 9 onto the fixing base 7. Under ultrasound guidance, the needle sheath 10 is inserted into the patient's thyroid gland. The adjusting knob 6 is then turned to push the inner push rod 18 towards the end of the piston rod 13. During the sliding of the inner push rod 18, the sealing plate 19 compresses the gas inside the rubber stopper 15, causing the expansion section 17 to expand outwards. Simultaneously, as the sealing plate 19 slides, the spring 20 is compressed and deformed by the sealing plate 19, folding and retracting into itself, and providing pressure to the sealing plate 19. The reverse elastic force causes the expansion section 17 to expand and fit tightly against the inner wall of the syringe 9. At this time, the medical staff bends their index and middle fingers to pull back the push-pull seat 4, allowing the piston rod 13 to cooperate with the expanded expansion section 17 to draw gas from the syringe 9. During the process of drawing gas from the syringe 9, negative pressure is generated in the syringe 9 and the needle sheath 10. At this time, the medical staff gently pulls the syringe 9 back and forth, allowing the cells in the thyroid gland to be punctured by the needle sheath 10 and drawn into the needle sheath 10 by negative pressure. The medical staff observes the cell filling situation through ultrasound. After the cells are filled, the needle sheath 10 is removed to complete the puncture operation.

[0049] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0050] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A thyroid puncture device, comprising a fixing seat and a syringe snapped onto the fixing seat, characterized in that, The syringe is fitted with a needle sheath at one end, a needle core is inserted inside the needle sheath, a needle sleeve is fitted over the needle sheath, a piston rod is slidably connected to the inner wall of the syringe, and a rubber stopper is fitted at the end of the piston rod. A support mechanism is provided to assist medical personnel in holding the syringe, and the support mechanism is connected to the fixing base; A puncture mechanism is used to assist medical personnel in performing thyroid puncture surgery. The puncture mechanism is connected to the support mechanism and the piston rod respectively. The support mechanism includes a limiting slide rod fixedly connected to the top of the fixed base, a push-pull seat slidably connected to the outer wall of the limiting slide rod, and a hand grip plate fixedly connected to the end of the limiting slide rod away from the fixed base; The limiting slide rods are two symmetrically distributed on both sides of the top of the fixed base. The side of the hand grip plate closest to the limiting slide rods is a flat plate structure, and the other side of the hand grip plate has an arc-shaped contour that is adapted to the contour of a human hand. The hand grip plate is provided with a clearance hole. The fixed base is fixedly connected to a fixing clamp on the side away from the limiting slide rods. The fixed base has a groove that matches the outline of the syringe. The syringe is inserted into the groove on the fixed base. The inner circumference of the fixed clamp matches the outer circumference of the syringe. The push-pull base has an adjustment groove. An adjustment knob is screwed onto the side of the push-pull base near the hand grip plate. The adjustment knob extends from the end of the push-pull base into the adjustment groove. The puncture mechanism includes an inner push rod slidably connected within the piston rod. One end of the inner push rod is fixedly connected to a sealing plate. The outer circumference of the inner push rod is smaller than that of the outer circumference of the sealing plate. The other end of the inner push rod is inserted into the push-pull seat and extends into the adjustment groove to abut against the adjustment knob. The outer circumference of the sealing plate is adapted to the inner circumference of the piston rod. A spring is fixedly connected to the side of the sealing plate away from the inner push rod. A bite plate is installed on the end of the spring away from the sealing plate.

2. The thyroid puncture device according to claim 1, characterized in that, A snap-fit ​​block is fixedly connected to the outer wall of the piston rod. The outer circumference of the snap-fit ​​block is larger than that of the outer circumference of the piston rod. A snap-fit ​​part that matches the contour of the snap-fit ​​block is fixedly connected to the rubber plug.

3. The thyroid puncture device according to claim 1, characterized in that, An expansion portion is fixedly connected to the rubber stopper, and the expansion portion has a corrugated profile.

4. The thyroid puncture device according to claim 1, characterized in that, The bite plate is fixedly connected to a bite part at its end. The end of the bite part has a triangular profile. The bite plate and the needle core are locked together by the bite part.

5. The thyroid puncture device according to claim 4, characterized in that, A bent portion is fixedly connected at the connection position between the biting part and the biting plate, and the bent portion bends the connection position between the biting part and the biting plate.

6. The thyroid puncture device according to claim 1, characterized in that, The grip plate, the limiting slide bar, the push-pull base, and the fixing base are all made of plastic.

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