Parathyroid gland autotransplantation device for thyroid surgery

Abstract

The parathyroid gland autotransplantation device comprises an injection sleeve, a mounting plate is fixedly arranged on the upper portion of the injection sleeve, a nut sleeve is fixedly arranged on the mounting plate, a screw matched with the nut sleeve is arranged in the nut sleeve, and a screw rod is arranged in the screw rod. A knob for driving the screw rod to rotate is fixedly arranged at the upper end of the screw rod; a piston is arranged in the injection sleeve in a sealed and sliding manner; the lower end of the screw rod penetrates through a through hole formed in the middle of the piston, and a crushing disc is fixedly arranged at the lower end of the screw rod; the upper portion of the crushing disc is attached to the bottom of the piston, and a plurality of crushing pin teeth are evenly arranged at the bottom of the crushing disc. A connecting structure used for being rotationally connected with the piston is arranged on the portion, located on the upper portion of the piston, of the screw. The parathyroid gland transplanter can rapidly crush parathyroid glands, is convenient and rapid to operate on the premise of ensuring a normal injection function, and can effectively reduce the use cost of the transplanter.

Description

Technical Field

[0001] This utility model relates to the field of autologous parathyroid transplantation, and more particularly to an autologous parathyroid transplantation device for thyroid surgery. Background Technology

[0002] Hypoparathyroidism is a long-term, difficult-to-treat complication after thyroid surgery, severely impacting patients' quality of life and prognosis. Autologous parathyroid transplantation (PA) is an effective method for salvaging parathyroid glands that were mistakenly removed during thyroid surgery or whose function could not be preserved in situ. Routine autologous transplantation of at least one parathyroid gland almost completely avoids severe, permanent hypoparathyroidism post-surgery. The most common transplant site is the ipsilateral sternocleidomastoid muscle, but this lacks the ability to directly monitor the graft. Therefore, forearm transplantation is now commonly used for functional assessment, specifically the brachioradialis muscle of the forearm. Analysis of parathyroid transplantation was conducted using both single-point homogenization injection and multi-point homogenization injection techniques for autologous parathyroid transplantation.

[0003] In clinical parathyroid gland transplantation surgery, the homogenized injection method involves cutting parathyroid gland tissue into small, approximate homogenates, drawing them into a syringe, mixing them with approximately 1 mL of physiological saline, and then injecting the mixture into the forearm muscle. This requires a homogenizer to break up the parathyroid gland tissue before injecting the fragmented tissue into the patient. Existing homogenizers use blades to break up the parathyroid gland tissue. These devices need to function as syringes, and rotating the blades requires a motor. This necessitates adding a battery, motor, and power switch to the syringe, resulting in a complex, bulky, and costly structure. Therefore, a parathyroid gland autologous transplant device for thyroid surgery needs to be developed. Utility Model Content

[0004] The purpose of this invention is to provide an autologous parathyroid gland transplant device for thyroid surgery, thereby solving the technical problems mentioned in the background section.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses an autologous parathyroid gland transplant device for thyroid surgery, comprising an injection sleeve, an upper mounting plate fixedly mounted on the upper part of the injection sleeve, a nut sleeve fixedly mounted on the mounting plate, a screw adapted to the nut sleeve inside the nut sleeve, and a knob fixedly mounted on the upper end of the screw for driving its rotation; a piston is slidably and sealed inside the injection sleeve, and a crushing disc is fixedly mounted on the lower end of the screw through a through hole in the middle of the piston; the upper part of the crushing disc is in contact with the bottom of the piston, and a plurality of crushing pins are evenly arranged on the bottom; a connecting structure for rotatably connecting the screw to the piston is provided at the upper part of the piston; an injection head is detachably mounted on the bottom of the injection sleeve, and an injection channel connected to and aligned with the bottom of the injection head is provided, with an injection needle mounted on the free end of the injection channel.

[0007] Furthermore, two limiting sliding protrusions parallel to their axis are symmetrically arranged on the inner peripheral wall of the injection sleeve, and two limiting sliding grooves adapted to the two limiting sliding protrusions are symmetrically opened on the outer peripheral wall of the piston.

[0008] Furthermore, the connection structure includes a limiting disk fixedly mounted on the screw, the bottom of the limiting disk being in contact with the upper part of the piston, a first annular protrusion fixedly mounted on the bottom of the limiting disk, a second annular protrusion mounted on the outer peripheral wall of the lower end of the first annular protrusion, a first annular groove rotatably engaging with the first annular protrusion being opened on the upper part of the piston, and a second annular groove rotatably engaging with the second annular protrusion being opened at the inner end of the first annular groove.

[0009] Furthermore, the lower end of the injection sleeve has an external thread on its inner peripheral wall, and the upper end of the injection head has an internal thread that matches the lower end of the injection sleeve's external thread on its inner peripheral wall.

[0010] Furthermore, a sealing ring is provided between the lower end of the injection sleeve and the injection head.

[0011] Furthermore, a filter screen is provided at the upper end of the injection channel.

[0012] Furthermore, a first on / off valve is provided in the middle of the injection channel.

[0013] Furthermore, the injection channel is provided with a liquid supply channel that is perpendicularly connected to the filter screen and the first on / off valve. A second on / off valve is provided in the middle of the liquid supply channel. The end of the liquid supply channel away from the injection channel is connected to one end of the liquid supply hose. The other end of the liquid supply hose is provided with a suction needle.

[0014] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0015] This invention enables rapid fragmentation of parathyroid glands at the connection between the injection sleeve and the injection head by rotating a knob at the outer end of the screw, which in turn causes the screw to drive the crushing disc and crushing pins to rotate in both linear and linear motion. This allows for rapid fragmentation of parathyroid glands while ensuring normal injection function. No motor, battery or other power mechanism is required, making operation convenient and quick, and effectively reducing the cost of using the transplant device. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the injection sleeve structure;

[0019] Figure 3 A schematic diagram showing the installation of components on the screw;

[0020] Figure 4 This is a schematic diagram of the piston structure;

[0021] Explanation of reference numerals in the attached drawings: 1. Injection sleeve; 2. Mounting plate; 3. Nut sleeve; 4. Screw; 5. Knob; 6. Piston; 7. Limiting slide; 8. Limiting slide groove; 9. Crushing disc; 10. Crushing pin tooth; 11. Limiting disc; 12. First annular protrusion; 13. Second annular protrusion; 14. First annular groove; 15. Second annular groove; 16. Injection head; 17. Sealing ring; 18. Injection channel; 19. Injection needle; 20. Filter screen; 21. First shut-off valve; 22. Liquid supply channel; 23. Second shut-off valve; 24. Liquid supply hose; 25. Aspiration needle. Detailed Implementation

[0022] like Figures 1-4 As shown, an autologous parathyroid gland transplant device for thyroid surgery includes an injection sleeve 1. An installation plate 2 is fixedly mounted on the upper part of the injection sleeve 1. A nut sleeve 3 is fixedly mounted on the installation plate 2. A screw 4 adapted to the nut sleeve 3 is installed inside the nut sleeve 3. A knob 5 for driving the screw 4 to rotate is fixedly connected to the upper end of the screw 4.

[0023] The piston 6 is slidably installed inside the injection sleeve 1. In this embodiment, two limiting sliding protrusions 7 parallel to its axis are symmetrically arranged on the inner peripheral wall of the injection sleeve 1. Two limiting sliding grooves 8 are symmetrically opened on the outer peripheral wall of the piston 6, which are respectively adapted to the two limiting sliding protrusions 7, thereby ensuring that the piston 6 can slide along the axis of the injection sleeve 7.

[0024] The lower end of the screw 4 passes through a through hole in the middle of the piston 6 and is fixedly connected to a crushing disc 9. The upper part of the crushing disc 9 is in contact with the bottom of the piston 6, and a plurality of crushing pins 10 are evenly arranged on the bottom.

[0025] The screw 4 has a connecting structure located on the upper part of the piston 6 for rotatable connection with the piston 6. Specifically, the connecting structure includes a limiting disk 11 fixedly mounted on the screw 4. The bottom of the limiting disk 11 is in contact with the upper part of the piston 6. A first annular protrusion 12 is fixedly mounted on the bottom of the limiting disk 11, and a second annular protrusion 13 is mounted on the outer peripheral wall of the lower end of the first annular protrusion 12. The upper part of the piston 6 has a first annular groove 14 that rotatably engages with the first annular protrusion 12, and a second annular groove 15 that rotatably engages with the second annular protrusion 13 is formed at the inner end of the first annular groove 14.

[0026] An injection head 16 is detachably mounted on the bottom of the injection sleeve 1. Specifically, the lower end of the injection sleeve 1 has an external thread on its inner circumferential wall, and the upper end of the injection head 16 has an internal thread that matches the external thread at the lower end of the injection sleeve 1. Additionally, a sealing ring 17 is installed between the lower end of the injection sleeve 1 and the injection head 16.

[0027] The injection head 16 has an injection channel 18 connected to and aligned with its axis at its bottom, and an injection needle 19 is installed at the free end of the injection channel 18. In this embodiment, a filter screen 20 is installed at the upper end of the injection channel 18, and a first on / off valve 21 is installed in the middle of the injection channel 18.

[0028] As a further improvement to this utility model, the injection channel 18 is provided with a liquid supply channel 22 that is vertically connected to it at the position between the filter screen 20 and the first on / off valve 21, and a second on / off valve 23 is installed in the middle of the liquid supply channel 22. The end of the liquid supply channel 22 away from the injection channel 18 is connected to one end of the liquid supply hose 24, and a suction needle 25 is installed at the other end of the liquid supply hose 24.

[0029] The working principle of this utility model is as follows:

[0030] First, place the parathyroid gland to be transplanted into the injection head, and screw the injection sleeve onto the upper end of the injection head. Then, by rotating the knob on the upper part of the screw, the screw, while maintaining its threaded connection with the nut sleeve, will also move linearly, causing the crushing disc and its multiple crushing pins at the bottom to rotate downwards, thus crushing the parathyroid gland above the injection head. After crushing, open the second on / off valve on the supply channel, and connect the aspiration needle to the saline solution bottle. Then, rotate the knob in the opposite direction to move the screw and piston away from the injection head, drawing saline solution into the injection head and injection sleeve. After aspiration, close the second on / off valve. After the saline solution and crushed parathyroid gland are thoroughly mixed, open the first on / off valve on the injection channel, and rotate the knob in the forward direction again to move the screw and piston towards the injection head, thus transplanting the crushed parathyroid gland into the patient through the injection needle.

[0031] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A parathyroid autologous transplant device for thyroid surgery, characterized in that: The device includes an injection sleeve, an upper part of which is fixedly mounted with a mounting plate. A nut sleeve is fixedly mounted on the mounting plate, and a matching screw is disposed inside the nut sleeve. A knob for driving the screw to rotate is fixedly mounted at the upper end of the screw. A piston is slidably and sealed inside the injection sleeve. The lower end of the screw passes through a through hole in the middle of the piston and a crushing disc is fixedly mounted at the lower end. The upper part of the crushing disc fits against the bottom of the piston, and multiple crushing pins are evenly arranged at the bottom. A connecting structure for rotatably connecting the screw to the piston is provided at the upper part of the piston. The connecting structure includes a limiting plate fixedly mounted on the screw, the bottom of the limiting plate being in contact with the upper part of the piston, a first annular protrusion fixedly mounted on the bottom of the limiting plate, a second annular protrusion mounted on the outer peripheral wall of the lower end of the first annular protrusion, a first annular groove rotatably engaging with the first annular protrusion on the upper part of the piston, and a second annular groove rotatably engaging with the second annular protrusion on the inner end of the first annular groove; an injection head is detachably mounted on the bottom of the injection sleeve, an injection channel communicating with and aligning with the bottom of the injection head, and an injection needle mounted on the free end of the injection channel.

2. The autologous parathyroid gland transplant device for thyroid surgery according to claim 1, characterized in that: The inner peripheral wall of the injection sleeve has two symmetrically arranged limiting sliding protrusions parallel to its axis, and the outer peripheral wall of the piston has two symmetrically arranged limiting sliding grooves that are adapted to the two limiting sliding protrusions respectively.

3. The autologous parathyroid transplant device for thyroid surgery according to claim 1, characterized in that: The lower end of the injection sleeve has an external thread on its inner circumferential wall, and the upper end of the injection head has an internal thread that matches the external thread at the lower end of the injection sleeve.

4. The autologous parathyroid transplant device for thyroid surgery according to claim 3, characterized in that: A sealing ring is provided between the lower end of the injection sleeve and the injection head.

5. The autologous parathyroid transplant device for thyroid surgery according to claim 1, characterized in that: A filter screen is provided at the upper end of the injection channel.

6. The autologous parathyroid transplant device for thyroid surgery according to claim 5, characterized in that: A first on / off valve is provided in the middle of the injection channel.

7. The autologous parathyroid transplant device for thyroid surgery according to claim 6, characterized in that: The injection channel has a liquid supply channel that is perpendicularly connected to it at the position between the filter screen and the first on / off valve. A second on / off valve is provided in the middle of the liquid supply channel. The end of the liquid supply channel away from the injection channel is connected to one end of the liquid supply hose. The other end of the liquid supply hose is provided with a suction needle.

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