An inflation dilation device for subcutaneously creating an operating space for endoscopic thyroid surgery

Abstract

The application relates to the technical field of medical devices, and discloses an inflatable expansion device for establishing an operation space under the skin in a thyroid surgery under a laparoscope, which comprises a gas conveying hose, one end of the gas conveying hose being fixedly connected with an extensible hose, one end of the extensible hose being fixedly connected with a luer joint one-way valve, the inside of the luer joint one-way valve being provided with a first limiting elastic member, one end of the first limiting elastic member being provided with a magnetic attraction element, the outside of the magnetic attraction element being slidably connected in the inside of the luer joint one-way valve, and the other end of the gas conveying hose being fixedly connected with a gas bag. The gas bag is arranged to extrude the first locking block to slide, so that a cavity under the skin of a patient is formed, the gas bag is inflated and expanded to synchronously drive the support mechanism to outwardly expand as a whole, the soft plate is uniformly attached to the subcutaneous tissue and continuously provides stable support force, and a boundary clear and volume sufficient operation cavity under the skin is accurately established in a target region of the thyroid surgery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an inflatable dilatation device for creating a subcutaneous operating space during endoscopic thyroid surgery. Background Technology

[0002] Endoscopic thyroid surgery has become one of the mainstream surgical procedures for the treatment of thyroid diseases due to its advantages such as minimal trauma, no obvious scarring on the neck after surgery, and rapid recovery. In endoscopic thyroid surgery, establishing a sufficient and stable operating space under the skin of the neck is a key prerequisite for the smooth progress of the surgery. At present, the commonly used methods for establishing subcutaneous operating space in clinical practice mainly include two categories: mechanical dilation and pneumatic dilation. Among them, pneumatic dilation is widely used in clinical practice due to its simple operation and fast dilation speed.

[0003] Existing inflatable dilatation devices for creating subcutaneous operating space rely solely on gas pressure for support, resulting in uneven distribution of support force and poor overall stability. During surgical procedures, the balloon is easily deformed by the compression and traction of the device, leading to local collapse or blurred boundaries of the established subcutaneous operating space.

[0004] The inventors of this application discovered in their research that the core defect of the aforementioned prior art is that it relies solely on the expansion force of the airbag itself to expand and support the subcutaneous tissue, lacking an independent and synchronously deployable mechanical support structure. It is impossible to form a stable three-dimensional support system while the airbag is inflated and expanded, resulting in poor stability and easy deformation of the expanded operating space. Furthermore, it is impossible to maintain the basic shape of the operating space after the airbag is removed, thereby affecting the safety and smoothness of the surgical operation. Summary of the Invention

[0005] This invention provides an inflatable dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery, which solves the problem that existing inflatable dilatation devices for creating a subcutaneous operating space rely solely on gas pressure for support, resulting in local collapse or blurred boundaries of the created subcutaneous operating space.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an inflatable dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery, comprising an inflatable tubing, one end of which is fixedly connected to a telescopic tubing, and one end of which is fixedly connected to a Luer connector one-way valve. The Luer connector one-way valve has a first limiting elastic element inside, one end of which is provided with a magnet. The magnet is externally slidably connected to the inside of the Luer connector one-way valve. The other end of the inflatable tubing is fixedly connected to an airbag, and the airbag has a supporting mechanism externally.

[0007] By adopting the above technical solution, the gas transmission hose and the telescopic hose are connected in sequence to form a flexible gas transmission path. The gas transmission hose has excellent flexibility and bending resistance, and can adapt to complex wiring environments. The telescopic hose can freely extend and retract to adjust the overall pipeline length and adapt to the equipment connection needs of different distances.

[0008] Preferably, the support mechanism includes a locking component and an auxiliary component. The interior of the locking component is disposed outside the airbag, and one end of the auxiliary component is disposed outside the locking component. The locking component includes a support base, the interior of which is disposed outside the airbag. A second limiting elastic member is disposed inside the support base, and a first locking block is disposed at one end of the second limiting elastic member. A flexible plate is fixedly connected to the top of the support base.

[0009] Preferably, the auxiliary component includes a first support sleeve, one end of which is fixedly connected to the outside of the support base. An auxiliary elastic element is provided inside the first support sleeve, one end of which is disposed at one end of a sliding rod, and the other end of which is disposed outside the support base. A second support sleeve is slidably connected to the outside of the sliding rod, the bottom end of which is fixedly connected to the outside of the support base, and the outside of the sliding rod is slidably connected to the inside of the first support sleeve.

[0010] Preferably, the outer side of the first locking block is slidably connected to the inside of the support base, and one end of the first locking block is disposed inside the airbag.

[0011] Preferably, the sliding rod has a support assembly inside, and the support assembly is disposed outside the first support sleeve.

[0012] Preferably, the support assembly includes a first support elastic element, one end of which is disposed inside the sliding rod, and the other end of which is disposed of a sliding block. A locking plate is fixedly connected inside the sliding block, and a first pulling rigid rope is disposed inside the sliding block and the locking plate.

[0013] Preferably, the bottom end of the first pulling rope is fixedly connected to the inside of the first support sleeve, a first adsorption magnet is fixedly connected inside the first pulling rope, and the other end of the first pulling rope is disposed outside the airbag.

[0014] Preferably, the first support sleeve has a shrinkage component inside, and the other end of the shrinkage component is located outside the sliding rod.

[0015] Preferably, the shrinking assembly includes a second supporting elastic element, one end of which is disposed inside the first supporting sleeve, and the other end of which is provided with a second locking block. One end of the second locking block is fixedly connected to a second pulling rigid rope, and a support frame is fixedly connected to the outside of the second pulling rigid rope. The support frame is fixedly connected to the outside of the first supporting sleeve, and one end of the second pulling rigid rope is fixedly connected to a second adsorption magnet.

[0016] Preferably, the outer side of the second locking block is slidably connected to the inside of the first support sleeve, the other end of the second locking block is disposed outside the sliding rod, and the outer side of the second pulling rigid rope is disposed inside the first support sleeve.

[0017] By adopting the above technical solution, the airbag and support mechanism are first placed under the skin of the patient's neck. The airbag is inflated through the Luer connector one-way valve, telescopic hose, and air supply hose. After the airbag expands, it squeezes the first locking block to release the lock with the support base. At the same time, it pushes the support base and soft plate to expand outward and fit the subcutaneous tissue. Simultaneously, it drives the first and second support sleeves to move, so that the sliding rod extends under the action of the auxiliary elastic element. The second locking block is locked into the notch of the sliding rod to fix the extended state of the support mechanism, thereby forming a stable subcutaneous operating cavity driven by the airbag and maintained by the mechanical support system.

[0018] This invention provides an inflatable dilatation device for creating a subcutaneous operating space during laparoscopic thyroid surgery. It has the following beneficial effects: 1. This invention utilizes an airbag to compress the first locking block, causing the airbag to slide out from the support base. Simultaneously, the airbag drives the support base and the flexible plate to slide outwards, and the sliding rod slides along with the support base. This creates a cavity under the patient's skin. The airbag's inflation and expansion synchronously drive the entire support mechanism to unfold outwards. The flexible plate evenly conforms to the subcutaneous tissue and continuously provides stable support. This precisely establishes a subcutaneous operating cavity with clear boundaries and sufficient volume in the target area of ​​thyroid surgery. The multi-point distribution structure consisting of the support base, sliding rod, first support sleeve, and second support sleeve forms a three-dimensional and stable support system, effectively preventing the cavity from collapsing or deforming during surgical instrument operation and ensuring the continuity and stability of the operating space.

[0019] 2. The present invention uses a sliding rod to drive a sliding block into the first support sleeve, and the sliding block can squeeze the first pulling rope out from inside the locking plate, and allow the first pulling rope to slide with the airbag, thereby facilitating the removal of the support mechanism after surgery. When the airbag is removed, the locking restriction on the first pulling rope is automatically released, allowing the first pulling rope to slide smoothly out of the airbag to form a dedicated traction end outside the body, eliminating the need to blindly search for the support component under the skin.

[0020] 3. The present invention uses a first and a second pulling rope to slide, and the second pulling rope will drive the second locking block to slide. At the same time, the sliding rod loses its support force and the support mechanism returns to its original state, thereby preventing the support mechanism from scratching the patient when it is removed from the patient's subcutaneous tissue. This effectively avoids scratching and tearing damage to the subcutaneous tissue caused by directly pulling the support mechanism in its unfolded state. Attached Figure Description

[0021] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the Luer connector check valve of the present invention; Figure 3 This is a schematic diagram of the flexible board of the present invention; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the sliding rod of the present invention; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 This is a schematic diagram of the first support sleeve of the present invention; Figure 8 for Figure 7 Enlarged view of point C in the middle; Figure 9 for Figure 7 Enlarged diagram of point D in the middle.

[0022] Among them, 1. Gas delivery hose; 2. Telescopic hose; 3. Luer connector check valve; 4. First limiting elastic element; 5. Magnet; 6. Airbag; 7. Support mechanism; 8. Support assembly; 9. Auxiliary elastic element; 10. Retraction assembly; 11. First adsorption magnet; 71. Locking assembly; 711. Support base; 712. Second limiting elastic element; 713. First locking block; 714. Flexible plate; 72. Auxiliary component; 721. First support sleeve; 722. Sliding rod; 723. Second support sleeve; 81. First supporting elastic element; 82. Sliding block; 83. Locking plate; 84. First pulling rigid rope; 101. Second support elastic element; 102. Second locking block; 103. Second pulling rigid rope; 104. Support frame; 105. Second adsorption magnet. Detailed Implementation

[0023] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see the appendix Figure 1 - Appendix Figure 3 This invention provides an inflatable dilatation device for creating a subcutaneous operating space in laparoscopic thyroid surgery, comprising an inflatable tubing 1, a telescopic tubing 2 fixedly connected to one end of the inflatable tubing 1, a Luer connector one-way valve 3 fixedly connected to one end of the telescopic tubing 2, a first limiting elastic element 4 disposed inside the Luer connector one-way valve 3, a magnet 5 disposed at one end of the first limiting elastic element 4, the magnet 5 being externally slidably connected to the inside of the Luer connector one-way valve 3, and an airbag 6 fixedly connected to the other end of the inflatable tubing 1, with a support mechanism 7 disposed outside the airbag 6.

[0025] Specifically, the air supply hose 1 is used to support the telescopic hose 2 and fix the air bag 6, and the telescopic hose 2 is used to support the Luer connector check valve 3. At the same time, the air supply hose 1 has a certain degree of flexibility, which allows the air supply hose 1 to be bent at a small angle. The telescopic hose 2 can be stretched and contracted due to the material properties, which can prevent the air supply hose 1 from being too short. The Luer connector check valve 3 is a fluid control element that combines the one-way check function with the standardized Luer connector. It can effectively prevent the gas from flowing backward in the pipeline. Its internal structure, such as silicone diaphragm, duckbill, and spring, achieves one-way conduction. Forward pressure pushes the valve core open to open the passage, and reverse pressure forces the valve core to close tightly. The Luer connector check valve 3 is used to support the extension and retraction of the first limiting elastic element 4, and the Luer connector check valve 3 is used to support the sliding of the magnet 5. Then, the first limiting elastic element 4 and the magnet 5 can fix the Luer connector check valve 3 and the air inflator structure.

[0026] Please see the appendix Figure 3 - Appendix Figure 5The support mechanism 7 includes a locking component 71 and an auxiliary component 72. The interior of the locking component 71 is disposed outside the airbag 6, and one end of the auxiliary component 72 is disposed outside the locking component 71. The locking component 71 includes a support base 711, the interior of which is disposed outside the airbag 6. A second limiting elastic member 712 is disposed inside the support base 711, and a first locking block 713 is disposed at one end of the second limiting elastic member 712. A flexible plate 714 is fixedly connected to the top of the support base 711. The auxiliary component 72 includes a first support sleeve 721, one end of which is fixedly connected to... Outside the support base 711, an auxiliary elastic element 9 is provided inside the first support sleeve 721. One end of the auxiliary elastic element 9 is located at one end of the sliding rod 722, and the other end of the auxiliary elastic element 9 is located outside the support base 711. The sliding rod 722 is slidably connected to the outside of the second support sleeve 723. The bottom end of the second support sleeve 723 is fixedly connected to the outside of the support base 711, and the sliding rod 722 is slidably connected to the inside of the first support sleeve 721. The first locking block 713 is slidably connected to the inside of the support base 711, and one end of the first locking block 713 is located inside the airbag 6.

[0027] Specifically, the support base 711 supports the extension and retraction of the second limiting elastic member 712, and also supports the fixing of the flexible plate 714. Furthermore, the support base 711 assists the sliding of the first locking block 713, and the second limiting elastic member 712 is fixedly connected to the first locking block 713. The first locking block 713 can then be locked inside the airbag 6 by the second limiting elastic member 712, thus fixing the airbag 6 to the support base 711. The support base 711 is distributed at the four corners of the airbag 6 surface. Simultaneously, the support base 711 supports the fixing of the first support sleeve 721 and the second support sleeve 723, and also supports the extension and retraction of the auxiliary elastic member 9. The auxiliary elastic member 9 is fixedly connected to the sliding rod 722, and the first support sleeve 721 and the second support sleeve 723 assist the sliding rod 722 in sliding. When the airbag 6... When the gas inside expands, the fixed end of the airbag 6 is squeezed out from the support base 711, and the airbag 6 squeezes the first locking block 713 to slide into the support base 711. Then, the first locking block 713 squeezes the second limiting elastic member 712 to compress, and the airbag 6 pushes the support base 711 and the soft plate 714 to slide outward. Then, the soft plate 714 will press against the patient's subcutaneous skin and form a cavity under the patient's skin. At the same time, the support base 711 will drive the first support sleeve 721 and the second support sleeve 723 to slide outward as well. The support base 711 drives the auxiliary elastic member 9 to stretch, and causes the sliding rod 722 to slide inside the first support sleeve 721 and the second support sleeve 723. This allows the support base 711, the soft plate 714, the first support sleeve 721, the sliding rod 722, and the second support sleeve 723 to move as the airbag 6 expands.

[0028] Please see the appendix Figure 4 - Appendix Figure 6 The sliding rod 722 has a support component 8 inside, and the support component 8 is located inside the first support sleeve 721. The support component 8 includes a first support elastic member 81. One end of the first support elastic member 81 is located inside the sliding rod 722, and the other end of the first support elastic member 81 is located with a sliding block 82. A locking plate 83 is fixedly connected inside the sliding block 82. A first pulling hard rope 84 is located inside the sliding block 82 and the locking plate 83. The bottom end of the first pulling hard rope 84 is fixedly connected inside the first support sleeve 721. A first adsorption magnet 11 is fixedly connected inside the first pulling hard rope 84. The other end of the first pulling hard rope 84 is located outside the airbag 6.

[0029] Specifically, the sliding rod 722 is used to support the extension and retraction of the first support elastic member 81, and the sliding rod 722 and the first support sleeve 721 are used to assist the sliding block 82 in sliding. Simultaneously, the sliding block 82 is used to support and fix the locking plate 83, and the first support sleeve 721 and the locking plate 83 are used to support and fix the first pulling rope 84. Furthermore, the first pulling rope 84 is used to support and fix the first adsorption magnet 11. When the sliding rod 722 slides inside the first support sleeve 721, it causes the sliding block 82 to slide inside the first support sleeve 721. The first support sleeve 721 has a sliding space, allowing the sliding block 82 to be squeezed into the first support sleeve 721. However, when the sliding block 82 slides into the first support sleeve 721, the first pulling rope 84 will be squeezed out of the locking plate 83 by the first support sleeve 721. When the pressure is applied, the first pulling hard rope 84 loses its locking force. When the sliding block 82 does not slide, it prevents the Luer joint check valve 3 from failing and causing the airbag 6 to slide along the first pulling hard rope 84, thus preventing the support mechanism 7 from forming a cavity under the patient's skin. When the airbag 6 releases gas and contracts, pulling the airbag 6 outward will cause the first pulling hard rope 84 to slide outward. At the same time, the first pulling hard rope 84 has a certain rigidity, but it will not affect the first pulling hard rope 84 sliding outward from the inside of the first support sleeve 721. Pulling the telescopic hose 2 outward will cause the airbag 6 to be pulled out from under the patient's skin, which can prevent the airbag 6 from being torn during the operation. Then, the airbag 6 will also pull a small part of the first pulling hard rope 84 out from under the patient's skin. The first pulling hard rope 84, pulled by the airbag 6, will not affect the support mechanism 7 from being supported under the patient's skin.

[0030] Please see the appendix Figure 7 - Appendix Figure 9The first support sleeve 721 has a retraction component 10 inside, and the other end of the retraction component 10 is located outside the sliding rod 722. The retraction component 10 includes a second support elastic member 101. One end of the second support elastic member 101 is located inside the first support sleeve 721, and the other end of the second support elastic member 101 is provided with a second locking block 102. One end of the second locking block 102 is fixedly connected to a second pulling hard rope 103. The outside of the second pulling hard rope 103 is fixedly connected to a support frame 104. The outside of the support frame 104 is fixedly connected to the outside of the first support sleeve 721. One end of the second pulling hard rope 103 is fixedly connected to a second adsorption magnet 105. The outside of the second locking block 102 is slidably connected inside the first support sleeve 721, and the other end of the second locking block 102 is located outside the sliding rod 722. The outside of the second pulling hard rope 103 is located inside the first support sleeve 721.

[0031] Specifically, the first support sleeve 721 is used to support the extension and retraction of the second support elastic member 101, and the first support sleeve 721 is used to assist the second locking block 102 in sliding with the second pulling hard rope 103. At the same time, the first support sleeve 721 is used to support the support frame 104 for fixation, and the support frame 104 is used to support the second pulling hard rope 103 for sliding. In turn, the second pulling hard rope 103 is used to support the second adsorption magnet 105 for fixation. When the sliding rod 722 slides to a predetermined position inside the first support sleeve 721, the second support elastic member 101 will drive the second locking block 102 to slide into the notch opened inside the sliding rod 722, which can prevent the support mechanism 7 from collapsing when the airbag 6 contracts and is taken out. When the airbag 6 drives the first pulling hard rope 84 outward... During sliding, the first magnetic magnet 11 inside the first pulling rope 84 will come into contact with the second magnetic magnet 105. The first magnetic magnet 11 will attract the second magnetic magnet 105 into the first pulling rope 84 due to the properties of opposite magnets, making the second magnetic magnet 105 and the first magnetic magnet 11 adhere tightly. Pulling the first pulling rope 84 outward will cause the second pulling rope 103 to slide outward in sync. Then, the second pulling rope 103 will cause the second locking block 102 to slide out from the notch inside the sliding rod 722, causing the sliding rod 722 to lose its support force, resulting in the support mechanism 7 collapsing downward. Continuing to pull the first pulling rope 84 will remove the support mechanism 7 from under the patient's skin.

[0032] Workflow: First, the airbag 6 and support mechanism 7 are placed under the patient's skin. When gas is delivered to the airbag 6, and the fixed end of the airbag 6 is squeezed out from inside the support base 711, it also squeezes the first locking block 713 to slide. The first locking block 713 then compresses the second limiting elastic element 712, and the airbag 6 causes the support base 711 and the flexible plate 714 to slide outwards. Subsequently, the support base 711 causes the first support sleeve 721 and the second support sleeve 723 to slide outwards simultaneously. During the sliding process, the support base 711 also stretches the auxiliary elastic element 9, causing the sliding rod 722 to slide inside the first support sleeve 721 and the second support sleeve 723, and thus the flexible plate 714 to slide outwards. The flexible plate 714 is placed under the patient's skin to form a cavity, and the airbag 6 is pulled out from under the patient's skin, thus achieving the effect of forming a cavity under the patient's skin. The airbag 6 inflates and expands synchronously, driving the support mechanism 7 to unfold outward as a whole. The flexible plate 714 evenly conforms to the subcutaneous tissue and continuously provides stable support. A subcutaneous operating cavity with clear boundaries and sufficient volume is accurately established in the target area of ​​thyroid surgery. The multi-point distribution structure composed of the support base 711, sliding rod 722, first support sleeve 721, and second support sleeve 723 forms a three-dimensional and stable support system, which effectively prevents the cavity from collapsing or deforming during the operation of surgical instruments, and ensures the continuity and stability of the operating space. When the airbag 6 is removed from the patient's subcutaneous tissue, the airbag 6 will cause the first pulling hard rope 84 to slide outward. During the sliding process of the sliding rod 722, the sliding block 82 will slide into the first support sleeve 721, and the first support sleeve 721 will squeeze the first pulling hard rope 84 out from the locking plate 83, which can make the first pulling hard rope 84 slide outward more smoothly. As a result, when the airbag 6 is removed from the patient's subcutaneous tissue, the first pulling hard rope 84 will also slide out of the patient's subcutaneous tissue in part, which can achieve the effect of facilitating the removal of the support mechanism 7 after surgery. When the airbag 6 is removed, the locking restriction on the first pulling hard rope 84 is automatically released, so that the first pulling hard rope 84 can slide out smoothly with the airbag 6 to form a dedicated traction end outside the body, without the need to blindly search for the support component under the skin. When the support mechanism 7 needs to be removed, the airbag 6 drives the first adsorption magnet 11 and the second adsorption magnet 105 inside the first pulling hard rope 84 to be attracted to each other through opposite magnets, so that the first pulling hard rope 84 and the second pulling hard rope 103 can form a rigid connection. Pulling the first pulling hard rope 84 outward will cause the second pulling hard rope 103 to slide first, and then the second pulling hard rope 103 will cause the second locking block 102 to slide out from the notch inside the sliding rod 722. The second locking block 102 will compress the second support elastic element 101 and cause the sliding rod 722 to lose its support force. Then the support base 711 and the soft plate 714 will slide downward by their own weight and restore the support mechanism 7 to its original state. Continuing to pull the first pulling hard rope 84 will remove the support mechanism 7 from under the patient's skin, thereby preventing the support mechanism 7 from scratching the patient when it is removed from under the patient's skin. This effectively avoids scratching and tearing damage to the subcutaneous tissue caused by directly pulling the support mechanism 7 in the unfolded state.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery, comprising a pneumatic tubing (1), characterized in that, One end of the gas delivery hose (1) is fixedly connected to a telescopic hose (2), and one end of the telescopic hose (2) is fixedly connected to a Luer connector check valve (3). The Luer connector check valve (3) is provided with a first limiting elastic element (4) inside. One end of the first limiting elastic element (4) is provided with a magnet (5). The magnet (5) is slidably connected to the inside of the Luer connector check valve (3) outside. The other end of the gas delivery hose (1) is fixedly connected to an air bag (6), and the air bag (6) is provided with a support mechanism (7) outside.

2. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 1, characterized in that, The support mechanism (7) includes a locking component (71) and an auxiliary component (72). The interior of the locking component (71) is located outside the airbag (6). One end of the auxiliary component (72) is located outside the locking component (71). The locking component (71) includes a support base (711). The interior of the support base (711) is located outside the airbag (6). A second limiting elastic member (712) is provided inside the support base (711). A first locking block (713) is provided at one end of the second limiting elastic member (712). A flexible plate (714) is fixedly connected to the top of the support base (711).

3. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 2, characterized in that, The auxiliary component (72) includes a first support sleeve (721), one end of which is fixedly connected to the outside of the support base (711). An auxiliary elastic element (9) is provided inside the first support sleeve (721). One end of the auxiliary elastic element (9) is provided at one end of the sliding rod (722), and the other end of the auxiliary elastic element (9) is provided outside the support base (711). A second support sleeve (723) is slidably connected to the outside of the sliding rod (722). The bottom end of the second support sleeve (723) is fixedly connected to the outside of the support base (711), and the outside of the sliding rod (722) is slidably connected to the inside of the first support sleeve (721).

4. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 2, characterized in that, The first locking block (713) is externally slidably connected to the inside of the support base (711), and one end of the first locking block (713) is located inside the airbag (6).

5. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 3, characterized in that, The sliding rod (722) is provided with a support component (8) inside, and the support component (8) is provided with an exterior inside the first support sleeve (721).

6. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 5, characterized in that, The support assembly (8) includes a first support elastic element (81), one end of which is disposed inside the sliding rod (722), and the other end of which is disposed of a sliding block (82). A locking plate (83) is fixedly connected inside the sliding block (82), and a first pulling hard rope (84) is disposed inside the sliding block (82) and the locking plate (83).

7. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 6, characterized in that, The bottom end of the first pulling hard rope (84) is fixedly connected to the inside of the first support sleeve (721), and the first adsorption magnet (11) is fixedly connected inside the first pulling hard rope (84). The other end of the first pulling hard rope (84) is located outside the airbag (6).

8. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 3, characterized in that, The first support sleeve (721) is provided with a shrinking component (10) inside, and the other end of the shrinking component (10) is provided outside the sliding rod (722).

9. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 8, characterized in that, The retraction assembly (10) includes a second support elastic member (101), one end of which is disposed inside the first support sleeve (721), and the other end of which is provided with a second locking block (102). One end of the second locking block (102) is fixedly connected to a second pulling hard rope (103), and the outside of the second pulling hard rope (103) is fixedly connected to a support frame (104). The outside of the support frame (104) is fixedly connected to the outside of the first support sleeve (721), and one end of the second pulling hard rope (103) is fixedly connected to a second adsorption magnet (105).

10. The pneumatic dilatation device for creating a subcutaneous operating space in endoscopic thyroid surgery according to claim 9, characterized in that, The second locking block (102) is externally slidably connected to the inside of the first support sleeve (721), the other end of the second locking block (102) is disposed outside the sliding rod (722), and the outside of the second pulling hard rope (103) is disposed inside the first support sleeve (721).

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