Thyroid nodule puncture device integrating puncture and storage
By designing a thyroid nodule puncture device integrating puncture and storage, the problems of loss and contamination of samples during aspiration are solved, the direct storage and subsequent operation of samples are achieved, and the success rate of biopsy is improved.
Patent Information
- Application Number
- CN202510297651.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2025-04-11
AI Technical Summary
During the aspiration of thyroid nodules, the number of samples is small and requires multiple transfers, which can easily cause sample loss or contamination and lead to biopsy failure.
A thyroid nodule puncture device integrating puncture and storage is designed, including a needle plug, needle tube, needle and sealing cap. By filling the storage cavity with cell storage fluid and soaking the liquid with a control rod, the sealing cap is then replaced with the needle to achieve direct storage of the sample.
It reduces loss and contamination during sample transfer, ensures that the sample remains intact during storage, improves biopsy success rate, and provides sufficient space for subsequent centrifugation and cell separation operations.
Smart Images
Figure CN119791735A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of medical devices, and in particular to a thyroid nodule puncture device integrating puncture and storage. Background Art
[0002] Thyroid nodule puncture is a method used to diagnose nodular thyroid disease, among which fine needle aspiration biopsy of thyroid nodules is a highly accurate diagnostic method. A fine needle is inserted into the thyroid nodule, and the puncture needle is repeatedly inserted and aspirated in the nodule to extract some nodule cells for pathological biopsy. This method can identify the nature of thyroid nodules before surgery, provide a basis for individualized and precise treatment of thyroid diseases, and is the key to thyroid diagnosis and treatment decisions.
[0003] During the fine needle aspiration of thyroid nodules, an ultrasound detection device is used to guide and assist the puncture needle to puncture the nodule. Part of the nodule tissue is extracted into the needle tube by repeated aspiration, and then the extracted nodule tissue is injected into a cell sample storage bottle, and then the cell sample storage bottle is sent for pathological biopsy. However, the number of samples obtained by this method is small, and multiple transfers are required, which can easily cause sample loss or contamination and thus cause biopsy failure. Therefore, it is necessary to design a thyroid nodule puncture device to reduce this loss. Summary of the invention
[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a thyroid nodule puncture device that integrates puncture and storage.
[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a thyroid puncture device comprises a needle plug, a needle tube, a needle head and a sealing cover, the needle tube has the same shape as the needle tube dedicated for thyroid puncture, the needle plug is arranged inside the needle tube, the cross-sectional area of the needle plug is equal to the cross-sectional area inside the needle tube, the needle head is a matching needle head for the needle tube, the needle plug comprises a needle plug body, a cylindrical channel, an injection channel, a storage cavity, a storage channel, a control rod and a sealing ring, the needle plug body is cylindrical, the sealing ring comprises an opening sealing ring and a closed sealing ring, the top end of the needle plug body is fixedly connected to the opening sealing ring, the cross-sectional area of the opening sealing ring is the same as the cross-sectional area of the needle plug body, a through hole is provided in the center of the opening sealing ring, the top end of the needle plug body is provided with an opening, the through hole and the opening together constitute the injection channel, the center of the bottom surface of the needle plug body is provided with the cylindrical channel, and the cylindrical channel extends all the way to the needle plug body At the injection channel at the top, the cross-sectional area of the cylindrical channel is larger than the cross-sectional area of the injection channel, the storage cavity is arranged inside the needle plug body, the storage cavity surrounds the cylindrical channel, the storage cavity is completely wrapped by the cylindrical channel and the needle plug body, the storage cavity is filled with cell preservation fluid, a circle of the storage channel is arranged at the connection between the cylindrical channel and the top of the needle plug body, the storage channel is arranged on the channel wall of the cylindrical channel, the storage channel connects the cylindrical channel and the storage cavity, the control rod is cylindrical and arranged in the cylindrical channel, the cross-sectional area of the control rod is equal to the cross-sectional area of the cylindrical channel, the top of the control rod is fixedly connected to the closed sealing ring, the cross-sectional area of the closed sealing ring is the same as the cross-sectional area of the control rod, the top of the closed sealing ring is attached to and blocks the injection channel, the height of the closed sealing ring is greater than the height of the storage channel, and the height of the control rod is greater than the height of the needle plug body.
[0006] Preferably, the pintle body and the tail of the control rod are both provided with a circle of cylinders extending in all directions.
[0007] Preferably, the needle tube includes a connecting head, a front tube and a tail tube, the connecting head is a protruding mouth that connects the top end of the needle tube to the needle, the top end of the front tube is fixedly connected to the connecting head, the surface of the tail end of the front tube is provided with a thread, the length of the front tube is one quarter of the needle tube, the remaining part of the needle tube is the tail tube, the inner wall of the top end of the tail tube is provided with a thread, the front tube and the tail tube are connected by threads, and the overall tube wall thickness of the front tube and the tail tube after the threads are coupled is equal to the tube wall thickness of the needle tube.
[0008] Preferably, the sealing cover includes a cylindrical groove and a cylindrical head. The sealing cover is cylindrical. The cylindrical groove is arranged on the top surface of the sealing cover. The cross-sectional area of the cylindrical groove is the same as the cross-sectional area of the connecting head. The cylindrical head is arranged at the center of the bottom surface circle of the inner wall of the cylindrical groove. The cross-sectional area of the cylindrical head is the same as the cross-sectional area of the internal channel of the connecting head. The length of the cylindrical head is equal to the length of the connecting head. Through such a design, the sealing cover can complete the sealing of the connecting head.
[0009] Preferably, the needle plug and the needle tube are both made of polypropylene material, which ensures that the strength performance of the entire device is qualified and the high transparency makes it easy to observe the internal situation.
[0010] Compared with the prior art, the present invention has the following beneficial effects: (1) the storage chamber is filled with cell preservation fluid in advance, and then the control rod is pulled to allow the cell preservation fluid to soak the nodule sample sucked into the needle tube, and then the needle head is replaced with a sealing cap, thereby achieving the purpose of storing the nodule sample in a needle tube, eliminating the step of transferring to a dedicated preservation tube and avoiding the loss during transfer; (2) the rotatably connected tail tube and front tube can be rotated and disassembled to very conveniently remove the needle plug, and then reconnected to form a complete needle tube, ensuring that the nodule sample has enough space for centrifugation, separation and other operations in the subsequent detection process. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a front view of the thyroid nodule puncture device integrating puncture and storage of the present invention; Figure 2 It is a cross-sectional view of the needle plug of the thyroid nodule puncture device integrating puncture and storage of the present invention; Figure 3 This is an enlarged cross-sectional view of the top of the needle plug of the thyroid nodule puncture device integrating puncture and storage of the present invention Figure 4 It is a schematic diagram of the connection between the front tube and the tail tube of the thyroid nodule puncture device integrating puncture and storage of the present invention; Figure 5 It is an enlarged cross-sectional view of the connection between the sealing cover and the connector of the thyroid nodule puncture device integrating puncture and storage of the present invention; Figure 6 It is a cross-sectional view of the sealing cover of the thyroid nodule puncture device integrating puncture and storage of the present invention; Figure 7 It is a cross-sectional view of the thyroid nodule puncture device integrating puncture and storage of the present invention after aspirating cell samples. DETAILED DESCRIPTION
[0012] In order to further understand the purpose, structure, features, and functions of the present invention, the following detailed description is made in conjunction with the embodiments. Figure 1 , Figure 2 and Figure 3 As shown, a thyroid nodule puncture device integrating puncture and storage includes a needle plug 1, a needle tube 2 and a needle 3, and also includes Figure 5 The sealing cover 4 shown, the needle tube 2 is the same shape as the needle tube dedicated for thyroid puncture, the needle plug 1 is arranged inside the needle tube 2, the cross-sectional area of the needle plug 1 is equal to the internal cross-sectional area of the needle tube 2, ensuring that the needle plug 1 can completely block the needle tube 2, the needle head 3 is a matching needle head for the needle tube 2, the needle head 3 is connected to the connector 210 of the needle tube 2, and the sealing cover 4 replaces the needle head 3 and is connected to the connector 210 after the needle head 3 is removed.
[0013] The needle tube 2 includes a connector 210, a front tube 220 and a tail tube 230. The connector 210 is a protruding nozzle that connects the top of the needle tube 2 to the needle 3. The top of the front tube 220 is fixedly connected to the connector 210. The length of the front tube 220 is one quarter of the length of the needle tube 2. The remaining part of the needle tube 2 is the tail tube 230. Figure 4 As shown, the rear end surface of the front tube 220 is provided with a thread 221, and the inner wall of the top end of the tail tube 230 is provided with a thread 231. The front tube 220 and the tail tube 230 are connected by threads. The shorter front tube 220 cooperates with the threadedly connected front tube 220 and tail tube 230 to facilitate the needle plug 1 to move into the tail tube 230 and then rotate and remove it together with the tail tube 230, thereby achieving the purpose of removing the needle plug 1 and opening the needle tube 2. The overall wall thickness of the front tube 220 and the tail tube 230 after the threaded coupling is equal to the wall thickness of the needle tube 2, which ensures the overall continuity of the inner wall of the needle tube 2 and also ensures that the thread will not affect the smoothness of the inner wall of the needle tube 2.
[0014] The needle plug 1 includes a needle plug body 110, a cylindrical channel 120, an injection channel 130, a storage chamber 140, a storage channel 150, a control rod 160 and a sealing ring 170. The needle plug body 110 is cylindrical. The sealing ring 170 includes an opening sealing ring 171 and a closed sealing ring 172. The top end of the needle plug body 110 is fixedly connected to the opening sealing ring 171. The cross-sectional area of the opening sealing ring 171 is the same as the cross-sectional area of the needle plug body 110, so as to assist the needle plug body 110 in sealing the needle tube 2.
[0015] A through hole 1711 is provided at the center of the opening sealing ring 171, and an opening 111 is provided at the top of the needle plug body 110. The through hole 1711 and the opening 111 together constitute the injection channel 130. The cylindrical channel 120 is provided at the center of the bottom surface of the needle plug body 110. The cylindrical channel 120 extends all the way to the injection channel 130 at the top of the needle plug body 110. The cylindrical channel 120 is connected to the injection channel 130, and the cross-sectional area of the cylindrical channel 120 is larger than the cross-sectional area of the injection channel 130. The injection channel 130 is conducive to the communication between the inside of the needle tube 2 and the inside of the needle plug body 110. The larger cylindrical channel 120 is conducive to the control rod 160 in the cylindrical channel 120 completely blocking the injection channel 130.
[0016] The storage cavity 140 is arranged inside the needle plug body 110, and the storage cavity 140 surrounds the cylindrical channel 120. The storage cavity 140 is completely wrapped by the cylindrical channel 120 and the needle plug body 110. The storage cavity 140 is filled with cell preservation fluid for protecting the nodule sample. A circle of the storage channel 150 is provided at the connection between the cylindrical channel 120 and the top of the needle plug body 110. The storage channel 150 is arranged on the channel wall of the cylindrical channel 120. The storage channel 150 connects the cylindrical channel 120 and the storage cavity 140, so that the cell preservation fluid stored in the storage cavity 140 can pass through the channel wall of the cylindrical channel 120 without obstacles, and then flow out from the injection channel 130.
[0017] like Figure 2 and Figure 3 As shown, the control rod 160 is cylindrical and arranged in the cylindrical channel 120. The cross-sectional area of the control rod 160 is equal to the cross-sectional area of the cylindrical channel 120. The top end of the control rod 160 is fixedly connected to the closed sealing ring 172. The cross-sectional area of the closed sealing ring 172 is the same as the cross-sectional area of the control rod 160. This design ensures that the control rod 160 can completely seal the cylindrical channel 120.
[0018] The height of the closed sealing ring 172 is greater than the height of the storage channel 150, and the top of the closed sealing ring 172 is attached to and blocks the injection channel 130. This design is conducive to the closed sealing ring 172 being able to block the storage channel 150 and the injection channel 130 at the same time. The height of the control rod 160 is greater than the height of the needle plug body 110. The tails of the needle plug body 110 and the control rod 160 are respectively provided with a circle of cylinders 112 and cylinders 161 extending all around, which facilitates the pulling and pulling of the needle plug body 110 and the control rod 160 respectively.
[0019] like Figure 5 and Figure 6As shown, the sealing cover 4 includes a cylindrical groove 410 and a cylindrical head 420. The sealing cover 4 is cylindrical. The cylindrical groove 410 is arranged on the top surface of the sealing cover 4. The cross-sectional area of the cylindrical groove 410 is the same as the cross-sectional area of the connecting head 210. The cylindrical head 420 is arranged at the center of the inner wall bottom circle of the cylindrical groove 410. The cross-sectional area of the cylindrical head 420 is the same as the cross-sectional area of the internal channel of the connecting head 210. The length of the cylindrical head 420 is equal to the length of the connecting head 210. Through such a design, the sealing cover 4 can complete the sealing of the connecting head 210, ensuring that the liquid in the needle tube 2 will not flow out.
[0020] When in use, the needle 3 is guided by an ultrasonic instrument to pierce the patient's thyroid nodule, the tip of the needle 3 cuts to obtain a cell sample, and then the needle plug body 110 is pulled to suck out the cell sample, and the cell sample is sucked into the front tube 220 through the needle 3. At this time, the needle plug 1 will move to the tail tube 230 due to the suction and pulling, that is, Figure 7 As shown, this process is prior art, and the present invention does not make any innovation, so it will not be described in detail. When the cell sample is sucked into the needle tube 2, the needle 3 is removed, and the sealing cover 4 is covered on the connector 210. The sealing cover 4 wraps the connector 210, and the cylindrical head 420 is inserted into the central channel of the connector 210 to seal the entire connector 210. Then the connector 210 is facing downward, and the control rod 160 is pulled upward to connect the storage channel 150 and the injection channel 130. After the storage channel 150 and the injection channel 130 are connected, the cell preservation fluid in the storage chamber 140 flows into the front tube 220 through the storage channel 150 and the injection channel 130. Because it is only necessary to ensure that the storage channel 150 and the injection channel 130 are connected to allow the cell preservation fluid to flow out smoothly, the purpose can be achieved by pulling the control rod 160 upward for a short distance and keeping the connection state. The negative pressure in the closed cavity will be After all the preservation solution has flowed into the front tube 220, the control rod 160 is attracted to return to its original position. The cell preservation solution protects the nodule cell sample in the front tube 220. At this time, the needle plug 1 is located in the tail tube 230. The tail tube 230 is rotated to separate the tail tube 230 and the front tube 220 with the help of the thread. The needle plug 1 is separated with the tail tube 230 to achieve the purpose of opening the needle tube 2. The needle plug 1 is removed and the tail tube 230 is reconnected with the front tube 220 to facilitate centrifugation and cell separation during biopsy. The cell preservation solution is injected into the needle tube 2 through the needle plug 1 to achieve the purpose of directly using the needle tube 2 for sample preservation, avoiding the loss of cell samples when transferring to the cell preservation tube, and through the separation and reconnection of the tail tube 230 and the front tube 220, the needle tube 2 has enough space for centrifugation and cell separation operations during biopsy, and there is no need to specially inject it into a special test tube for biopsy, further reducing the transfer loss of cell samples.
[0021] The present invention has been described by the above-mentioned relevant embodiments, however, the above-mentioned embodiments are only examples for implementing the present invention. It must be pointed out that the disclosed embodiments do not limit the scope of the present invention. On the contrary, changes and modifications made without departing from the spirit and scope of the present invention are all within the scope of patent protection of the present invention.
Claims
1. A thyroid nodule puncture device integrating puncture and storage comprises a needle plug, a needle tube, a needle and a sealing cover, characterized in that: The needle tube has the same shape as the needle tube specially used for thyroid puncture, the needle plug is arranged inside the needle tube, the cross-sectional area of the needle plug is equal to the cross-sectional area inside the needle tube, the needle head is a matching needle head for the needle tube, the needle plug includes a needle plug body, a cylindrical channel, an injection channel, a storage chamber, a storage channel, a control rod and a sealing ring, the needle plug body is cylindrical, the sealing ring includes an opening sealing ring and a closed sealing ring, the top end of the needle plug body is fixedly connected to the opening sealing ring, the cross-sectional area of the opening sealing ring is the same as the cross-sectional area of the needle plug body, a through hole is provided in the center of the opening sealing ring, the top end of the needle plug body is provided with an opening, the through hole and the opening together constitute the injection channel, the cylindrical channel is provided at the center of the bottom surface of the needle plug body, the cylindrical channel extends all the way to the injection channel at the top end of the needle plug body, and the cross-sectional area of the cylindrical channel is larger than that of the needle plug body. The cross-sectional area of the injection channel is as follows: the storage cavity is arranged inside the needle plug body, the storage cavity surrounds the cylindrical channel, the storage cavity is completely wrapped by the cylindrical channel and the needle plug body, the storage cavity is filled with cell preservation fluid, a circle of the storage channel is arranged at the connection between the cylindrical channel and the top of the needle plug body, the storage channel is arranged on the channel wall of the cylindrical channel, the storage channel connects the cylindrical channel and the storage cavity, the control rod is cylindrical and arranged in the cylindrical channel, the cross-sectional area of the control rod is equal to the cross-sectional area of the cylindrical channel, the top of the control rod is fixedly connected to the closed sealing ring, the cross-sectional area of the closed sealing ring is the same as the cross-sectional area of the control rod, the top of the closed sealing ring is attached to and blocks the injection channel, the height of the closed sealing ring is greater than the height of the storage channel, and the height of the control rod is greater than the height of the needle plug body.
2. The thyroid nodule puncture device integrating puncture and storage as claimed in claim 1, characterized in that: The needle tube includes a connecting head, a front tube and a tail tube, the connecting head is a protruding mouth connecting the top end of the needle tube to the needle, the top end of the front tube is fixedly connected to the connecting head, the surface of the tail end of the front tube is provided with a thread, the length of the front tube is one quarter of the needle tube, the remaining part of the needle tube is the tail tube, the inner wall of the top end of the tail tube is provided with a thread, the front tube and the tail tube are connected by threads, and the overall tube wall thickness of the front tube and the tail tube after the threads are coupled is equal to the tube wall thickness of the needle tube.
3. The thyroid nodule puncture device integrating puncture and storage as claimed in claim 1, characterized in that: The sealing cover includes a cylindrical groove and a cylindrical head. The sealing cover is cylindrical. The cylindrical groove is arranged on the top surface of the sealing cover. The cross-sectional area of the cylindrical groove is the same as the cross-sectional area of the connecting head. The cylindrical head is arranged at the center of the bottom circle of the inner wall of the cylindrical groove. The cross-sectional area of the cylindrical head is the same as the cross-sectional area of the internal channel of the connecting head. The length of the cylindrical head is equal to the length of the connecting head. Through such a design, the sealing cover can complete the sealing of the connecting head.
4. The thyroid nodule puncture device integrating puncture and storage as claimed in claim 1, characterized in that: The tail of the pin plug body and the control rod are both provided with a circle of cylinders extending in all directions.
5. The thyroid nodule puncture device integrating puncture and storage as claimed in claim 1, characterized in that: The needle plug and the needle tube are both made of polypropylene material.