A device for aspirating and injecting medicine for thyroid cyst

Abstract

The application relates to a thyroid cyst suction and medicine injection device which effectively solves the problem that the thyroid cyst suction and medicine injection operation is complicated; the technical scheme is that the device comprises a box body and a syringe body, the syringe body is composed of a shell, a piston and a piston rod, the bottom of the shell is symmetrically provided with a left joint and a right joint, the lower end of the shell is provided with a rotatable adapter, the lower end of the adapter is provided with a puncture needle, the inside of the adapter is provided with a horizontal plate, eight vertical branch pipes are circumferentially arranged on the horizontal plate, and a one-way valve is arranged at the lower end of each branch pipe; two branch pipes which are centrally symmetrical form a group, a soft pipe is connected to the lower end of one of the two branch pipes of each group; the left joint and the right joint can correspond to the two branch pipes of one group; the device can automatically adjust the amount of physiological saline and medicine according to the amount of the cyst fluid sucked out, the medicine preparation link is simplified, and the efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of thyroid surgery, in particular to a thyroid cyst suction and drug injection device. BACKGROUND

[0002] The most minimally invasive and effective treatment for thyroid cysts is to use a puncture needle to enter the thyroid cyst, to extract the liquid in the cyst, and then to inject lauromacrogol injection or anhydrous alcohol drug into the cyst. In order to better extract the liquid in the cyst, some doctors currently use physiological saline to flush the cyst before injecting the drug. The traditional operation generally uses a disposable syringe, which is used for multiple suction, and the liquid in the cyst is collected in a bottle. Then, according to the amount of cyst fluid, physiological saline less than the amount of cyst fluid is selected for flushing, and finally a small amount of drug is injected. The amount of saline is generally about 4 / 5 of the amount of cyst fluid, and the amount of drug is generally about 1 / 3 of the amount of cyst fluid. The whole process is relatively complicated, and it needs to be repeated multiple times to change the syringe and to extract and release the cyst fluid, as well as to extract and release the physiological saline and to inject the drug.

[0003] In order to simplify the operation, patent document CN108721708A provides a thyroid cyst suction and drug injection device. The device uses a retention needle for suction and injection, and uses two reserved interfaces for suction and injection, respectively. However, at least two syringes are still needed for cyst fluid suction and drug injection. After suction, the amount of drug needs to be extracted according to the amount of cyst fluid. Although the operation is simplified to some extent, there are still the following problems: 1. It cannot use physiological saline for flushing according to the needs; 2. It cannot automatically adapt the amount of physiological saline and drug according to the amount of cyst fluid to simplify the operation process; and 3. It cannot use a single syringe for simultaneous suction and injection. Therefore, there is a need for a device to further simplify the operation. SUMMARY

[0004] In view of the above problems, the purpose of the present application is to provide a thyroid cyst suction and drug injection device, which can effectively solve the problem of complicated thyroid cyst suction and drug injection operation.

[0005] The technical solution is to include a box body and a syringe body, the syringe body is composed of a shell, a piston and a piston rod, the bottom of the shell is symmetrically installed with a left connector and a right connector, the lower end of the shell is installed with a rotatable adapter, the lower end of the adapter is installed with a puncture needle, the inside of the adapter is provided with a horizontal plate, the horizontal plate is circumferentially distributed with eight vertical branch pipes, the lower end of each branch pipe is installed with a check valve; two branch pipes that are centrally symmetric form a group, and the lower end of one of the two branch pipes in each group is connected with a hose;

[0006] The left and right connectors can correspond to two branch pipes in one set;

[0007] The interior of the box consists of a first chamber, a second chamber, a third chamber, and a fourth chamber from top to bottom. The volumes of the first chamber to the third chamber are not the same. A main shaft that runs through the first chamber to the third chamber is installed in the middle of the box. A compression device is installed inside each of the first chamber to the third chamber.

[0008] The extrusion device includes an active baffle fixed on the main shaft and a passive baffle fixed on the housing, with a water bladder between the active baffle and the passive baffle; when the volume of the water bladder in the first chamber increases, it can drive the main shaft to rotate, thereby extruding the other two water bladders.

[0009] The water bladder located in the first chamber is connected to one of the hoses; the other three hoses are respectively connected to the second to fourth chambers.

[0010] The advantages of this invention are: 1. It can automatically adjust the amount of saline and medication according to the amount of aspirated fluid, simplifying the medication preparation process and improving efficiency; 2. It can achieve the correspondence between the puncture needle 6 and the designated chamber and control the flow of fluid without disassembling or replacing the syringe, simplifying the instability of the equipment and syringe during insertion and removal, and the rotation adjustment makes it stable, fast and convenient; 3. The entire complex process can be completed by rotation and repeated aspiration, improving efficiency, saving surgical time and ensuring the accuracy of surgical medication dosage. Attached Figure Description

[0011] Figure 1 This is the front view of the present invention.

[0012] Figure 2 This is a front cross-sectional view of the present invention.

[0013] Figure 3 for Figure 2 Sectional view of AA.

[0014] Figure 4 for Figure 2 Cross-sectional view of the middle section (BB).

[0015] Figure 5 for Figure 2 Cross-sectional view of the middle CC section.

[0016] Figure 6 for Figure 2 Cross-sectional view of DD.

[0017] Figure 7 for Figure 2 Cross-sectional view of the EE. Detailed Implementation

[0018] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Depend on Figures 1 to 7 The present invention includes a housing 1 and a syringe body 2. The syringe body 2 consists of a shell, a piston, and a piston rod. A left connector 3 and a right connector 4 are symmetrically installed on the bottom of the shell. A rotatable adapter 5 is installed at the lower end of the shell. A puncture needle 6 is installed at the lower end of the adapter 5. A horizontal plate 7 is provided inside the adapter 5. Eight vertical branches 8 are evenly distributed around the circumference of the horizontal plate 7. A one-way valve 9 is installed at the lower end of each branch 8. Two branches 8 that are centrally symmetrical form a group. The lower end of one of the two branches 8 in each group is connected to a flexible tube 10.

[0020] The left connector 3 and right connector 4 can correspond to two branch pipes 8 in one group;

[0021] The interior of the box 1 consists of a first chamber 11, a second chamber 12, a third chamber 13, and a fourth chamber 14, from top to bottom. The volumes of the first chamber 11 to the third chamber 13 are not the same. A main shaft 15 is installed in the middle of the box 1, passing through the first chamber 11 to the third chamber 13. A compression device 16 is installed inside each of the first chamber 11 to the third chamber 13.

[0022] The extrusion device 16 includes an active baffle 1601 fixed on the main shaft 15 and a passive baffle 1602 fixed on the housing 1. A water bladder 1603 is provided between the active baffle 1601 and the passive baffle 1602. and the water bag 1603 is in a state of being compressed by the active baffle 1601 and the passive baffle 1602 at the time of initial installation Figure 3 After the volume of the water bladder 1603 in the first chamber 11 increases, it can drive the main shaft 15 to rotate, thereby squeezing the other two water bladders 1603.

[0023] The water bladder 1603 located in the first chamber 11 is connected to one of the hoses 10; the other three hoses 10 are respectively connected to the second chamber 12 to the fourth chamber 14.

[0024] To ensure the correspondence between each set of branch tubes 8 and the first to fourth chambers 11 and 14, the one-way valves 9 on the two branch tubes 8 in each set of branch tubes are a one-way outflow valve and a one-way inflow valve, respectively. One-way outflow valves are installed on the branch tubes 8 corresponding to the first chamber 11 and the fourth chamber 14, and one-way inflow valves are installed on the branch tubes 8 corresponding to the second chamber 12 and the third chamber 13. Liquid can enter the water sac 1603 in the first chamber 11 and the fourth chamber 14 from the puncture needle 6; liquid can enter the puncture needle 6 from the second chamber 12 and the third chamber 13.

[0025] To facilitate the connection of the lower ends of the left connector 3 and the right connector 4 to the branch pipe 8, rubber gaskets are fixed to the lower ends of the left connector 3 and the right connector 4.

[0026] In order to enable the water bladder 1603 in the first chamber 11 to increase in volume and drive the main shaft 15 to rotate, thereby squeezing the other two water bladders 1603, the water bladder 1603 in the first chamber 11 is positioned between the front of the active baffle 1601 and the front of the passive baffle 1602, while the water bladder 1603 in the second chamber 12 and the third chamber 13 is positioned between the back of the active baffle 1601 and the back of the passive baffle 1602.

[0027] To facilitate rotation and alignment, the outer edge of the adapter 5 is provided with graduations, and the syringe shell is provided with arrows. When the arrows correspond to different graduations, the left connector 3 and the right connector 4 can correspond to different sets of branch tubes 8.

[0028] In order to achieve a different volume between the first chamber 11 and the third chamber 13, the height of the second chamber 12 is four-fifths of the height of the first chamber 11, and the height of the third chamber 13 is one-third of the height of the first chamber 11.

[0029] To facilitate the extrusion of liquid from the water bladder 1603 in the second chamber 12 and the third chamber 13, an interface is installed on the water bladder 1603 located in the second chamber 12 and the third chamber 13. The interface passes through the passive baffle 1602 and is equipped with a pressure relief valve 1604.

[0030] In order to fully absorb the liquid in the second chamber 12 and the third chamber 13, one end of the hose 10 placed in the second chamber 12 is in contact with the bottom of the second chamber 12, while the bottom of the second chamber 12 is inclined toward the lower end of the hose 10; the same applies to the third chamber 13.

[0031] When this invention is used, the box 1 is first set with four layers, namely the first chamber 11 to the fourth chamber 14. The water bladder 1603 in the first chamber 11 is initially empty, which is for the purpose of collecting the bladder fluid. At this time, the gap between the active baffle 1601 and the passive baffle 1602 is small, and only the empty water bladder 1603 is sandwiched in it.

[0032] The water sacs 1603 in the second chamber 12 and the third chamber 13 are full. The water sac 1603 in the second chamber 12 is filled with saline, and the water sac 1603 in the third chamber 13 is filled with medication. There is an angle between the active baffle 1601 and the passive baffle 1602 in the second chamber 12 and the third chamber 13, and the angle is consistent. However, since the heights of the second chamber 12 and the third chamber 13 are different, the amounts of saline and medication are also different.

[0033] The fourth chamber 14 is empty, and its purpose is to collect the brine after rinsing.

[0034] The entire surgical procedure will use the following chambers in sequence: first chamber 11, second chamber 12, fourth chamber 14, and third chamber 13. The effects are as follows: 1. Waste fluid is aspirated and drained into the water balloon 1603 in the first chamber 11; 2. Saline solution is injected; 3. Saline solution is aspirated and drained into the fourth chamber 14; 4. Medications are injected.

[0035] Therefore, in actual use, the syringe body 2 needs to select the corresponding relationship between the puncture needle 6 and multiple chambers.

[0036] The specific operation and principle are as follows:

[0037] Firstly, the adapter 5 contains eight branch pipes 8, arranged in four groups of two that are symmetrically positioned to each other. One of the two branch pipes 8 in each group is connected to a flexible hose 10, resulting in four hose-connected connectors. By continuously arranging these four connectors with flexible hoses 10, an auxiliary connector can be formed. ​ The state is shown; the branches 8 corresponding to the four tubing 10 are defined as a, b, c, d; and correspondingly a', b', c', d'. a corresponds to the first chamber 11, b to the second chamber 12, c to the fourth chamber 14, and d to the third chamber 13. Therefore, by rotating the outer shell of the syringe body 2 clockwise, the left connector 3 and the right connector 4 can connect the puncture needle 6 sequentially to the first chamber 11, the second chamber 12, the fourth chamber 14, and the third chamber 13. This allows the aforementioned surgical procedure to be performed.

[0038] Since the first chamber 11 and the fourth chamber 14 require suction, the lower ends of the branch pipes 8 corresponding to a and c are equipped with one-way discharge valves, while the lower ends of the branch pipes 8 corresponding to b and d are equipped with one-way inlet valves. Furthermore, the one-way valves 9 at the lower ends of the two branch pipes 8 in each group are opposite; that is, the lower end of the branch pipe 8 corresponding to a' is a one-way inlet valve, and the same applies to b' to d', which will not be elaborated further.

[0039] The specific procedure during the surgery is as follows: First, the puncture needle 6 is inserted into the area where the cyst is located. During the surgery, ultrasound guidance is required to observe the needle's feeding status, as well as the size of the cyst and the state of the cyst fluid inside the cyst in real time.

[0040] Then, rotate the outer shell of the syringe body 2, observing the arrow on the syringe shell and the scale on the adapter 5, aligning the left connector 3 and right connector 4 with the branch tubes 8 corresponding to a and a'; then, repeatedly pull the piston inside the syringe body 2 to aspirate the cyst fluid from the cyst and inject it into the water sac 1603 in the first chamber 11. The volume of the water sac 1603 in the first chamber 11 will increase, which will then drive the main shaft 15 to rotate through the active baffle 1601; after the main shaft 15 rotates, the active baffles 1601 in the second chamber 12 and the third chamber 13 will also rotate, thereby squeezing the saline water sac 1603 and the drug water sac 1603; so that the saline flows into the second chamber 12 and the drug flows into the third chamber 13.

[0041] Because the first chamber 11 has the largest volume and the third chamber 13 has the smallest volume, although the rotation angle of the main shaft 15 remains constant, the amount of saline squeezed is only about 4 / 5 of the aspirated fluid volume, and similarly, the amount of medication squeezed is only about 1 / 3 of the fluid volume. This means that the amount of saline and medication can be automatically selected through fluid aspiration. It can rationally squeeze out appropriate amounts of saline and medication based on the amount of aspirated fluid.

[0042] After the cyst fluid is aspirated, continue to rotate the outer shell of the syringe body 2 clockwise so that the left connector 3 and the right connector 4 correspond to b and b'. At this time, by repeatedly pressing the syringe body 2, saline will be aspirated and injected into the cyst through the puncture needle 6 to flush the cyst. The amount of saline that can be aspirated is limited, so it is necessary to observe it in a timely manner. Stop aspiration when the saline in the second chamber 12 has been completely aspirated.

[0043] Then continue to rotate the outer shell of the syringe body 2 clockwise so that the left connector 3 and the right connector 4 correspond to c and c'. At this time, by repeatedly pressing the syringe body 2, the saline in the cyst will be aspirated into the fourth chamber 14, thus completing the flushing of the cyst.

[0044] Finally, continue to rotate the outer shell of the syringe body 2 clockwise so that the left connector 3 and the right connector 4 correspond to d and d'. At this time, by repeatedly pressing the syringe body 2, the drug in the third chamber 13 will be injected into the cyst, completing the drug injection into the cyst. Careful observation should also be made in the syringe. After the drug is aspirated, press down the piston rod of the syringe body 2 in time to avoid excessive aspiration.

[0045] The above procedures can be used to aspirate, clean, and inject medication into the cyst.

[0046] The entire operation only requires rotating the syringe body 2 to repeatedly aspirate and then repeating the process. No separate aspiration or injection equipment is needed; the syringe body 2 alone is sufficient. Furthermore, accurate handling of saline solution and medication is not required, greatly simplifying the operation, improving efficiency, and shortening surgical time.

[0047] Precautions for using this device: When operating, the adapter 5 should be held firmly to prevent the needle from shaking and causing misalignment; at the same time, before each rotation of the syringe body 2, the piston inside the syringe body 2 should be at its lowest position.

[0048] This device mainly consists of an adapter 5 and a housing 1 working together. The adapter 5 and the housing 1 are indispensable and complement each other. Through the design of the adapter 5, the connection between the puncture needle 6 and the designated chamber can be completed without disassembling or replacing the syringe body 2. At the same time, the design of the one-way valve 9 on the branch tube 8 can control the flow direction of the liquid, thereby distinguishing between the functions of aspiration and injection, and ultimately realizing a rapid surgical procedure.

Claims

1. A thyroid cyst aspiration and injection device, comprising a housing (1) and a syringe body (2), characterized in that, The syringe body (2) consists of a shell, a piston and a piston rod. A left connector (3) and a right connector (4) are symmetrically installed at the bottom of the shell. A rotatable adapter (5) is installed at the lower end of the shell. A puncture needle (6) is installed at the lower end of the adapter (5). A horizontal plate (7) is provided inside the adapter (5). Eight vertical branches (8) are evenly distributed around the circumference of the horizontal plate (7). A one-way valve (9) is installed at the lower end of each branch (8). Two branches (8) that are centrally symmetrical form a group. One of the branches (8) in each group is connected to a flexible tube (10) at the lower end. The left connector (3) and right connector (4) can correspond to two branch pipes (8) of one set; The interior of the box (1) consists of a first chamber (11), a second chamber (12), a third chamber (13), and a fourth chamber (14) from top to bottom. The volumes of the first chamber (11) to the third chamber (13) are not the same. A main shaft (15) is installed in the middle of the box (1) and runs through the first chamber (11) to the third chamber (13). A compression device (16) is installed inside each of the first chamber (11) to the third chamber (13). The extrusion device (16) includes an active baffle (1601) fixed on the main shaft (15) and a passive baffle (1602) fixed on the housing (1). A water bladder (1603) is provided between the active baffle (1601) and the passive baffle (1602). After the volume of the water bladder (1603) in the first chamber (11) increases, it can drive the main shaft (15) to rotate, thereby extruding the other two water bladders (1603). The water bladder (1603) located in the first chamber (11) is connected to one of the hoses (10); the other three hoses (10) are respectively connected to the second chamber (12) to the fourth chamber (14); The water bladder (1603) in the first chamber (11) is located between the front of the active baffle (1601) and the front of the passive baffle (1602), while the water bladder (1603) in the second chamber (12) and the third chamber (13) is located between the back of the active baffle (1601) and the back of the passive baffle (1602).

2. The thyroid cyst aspiration and injection device according to claim 1, characterized in that, The one-way valves (9) on the two branch pipes (8) of each group of branch pipes (8) are one-way liquid outlet valve and one-way liquid inlet valve respectively; one-way liquid outlet valve is provided on the branch pipe (8) corresponding to the first chamber (11) and the fourth chamber (14), and one-way liquid inlet valve is provided on the branch pipe (8) corresponding to the second chamber (12) and the third chamber (13).

3. The thyroid cyst aspiration and injection device according to claim 2, characterized in that, Liquid can enter the water sac (1603) in the first chamber (11) and the fourth chamber (14) from the puncture needle (6); liquid can enter the puncture needle (6) from the second chamber (12) and the third chamber (13).

4. The thyroid cyst aspiration and injection device according to claim 1, characterized in that, The lower ends of the left connector (3) and the right connector (4) are fixed with rubber gaskets.

5. The thyroid cyst aspiration and injection device according to claim 1, characterized in that, The adapter (5) has graduations on its outer edge, and the syringe shell has arrows.

6. The thyroid cyst aspiration and injection device according to claim 5, characterized in that, When the arrows correspond to different scales, the left connector (3) and the right connector (4) can correspond to different sets of branch pipes (8).

7. The thyroid cyst aspiration and injection device according to claim 1, characterized in that, The height of the second chamber (12) is four-fifths of the height of the first chamber (11), and the height of the third chamber (13) is one-third of the height of the first chamber (11).

8. The thyroid cyst aspiration and injection device according to claim 1, characterized in that, The water bladder (1603) located in the second chamber (12) and the third chamber (13) is equipped with an interface that passes through the passive baffle (1602) and is equipped with a pressure relief valve (1604).

9. The thyroid cyst aspiration and injection device according to claim 1, characterized in that, One end of the hose (10) placed in the second chamber (12) is in contact with the bottom of the second chamber (12), while the bottom of the second chamber (12) is inclined toward the lower end of the hose (10).

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