A retractor for laparoscopic thyroid surgery

Abstract

The invention discloses a retractor for laparoscopic thyroid surgery, which belongs to the field of surgical instruments. The retractor for laparoscopic thyroid surgery comprises a catheter and a support assembly fixed at one end of the catheter, a puncture device joint is fixed at the end of the catheter away from the support assembly, the puncture device joint matches the puncture device tube sleeve port, an equipment through hole is arranged in the catheter, an air inlet pipe and an exhaust pipe are arranged in the catheter, the support assembly comprises a support frame, a guide operation cavity is arranged in the support frame, three grooves are evenly divided and fixed on the outer wall of the support frame at equal angles, air bags are glued in the grooves, and two retractor parts are fixed on the side of the air bag away from the support frame. The invention does not require additional puncture holes and can be used together with the puncture holes of laparoscopic surgical instruments. Since there is no mechanical puncture operation, nerve damage and muscle damage will not be caused, the safety factor is high, the angle and range of surgical cavity construction are adjustable, the operation is convenient, the market prospect is good, and it is suitable for promotion.

Description

Technical Field

[0001] The invention relates to the field of surgical instruments, and more particularly to a retractor for laparoscopic thyroid surgery. Background Art

[0002] The exposure of the surgical field in laparoscopic thyroid surgery is an important step. From an anatomical point of view, the thyroid gland is located in a potential cavity behind the anterior cervical muscles, on both sides of the trachea, and in front of the carotid sheath. The first step in the operation is to expand this potential cavity into a real cavity. The conventional method is to insert the puncture device through the tunnel dilator, maintain a certain pressure through carbon dioxide, and free the fascial space below the platysma muscle. Then, the anterior cervical muscles are retracted by skin puncture hooks or percutaneous hanging lines to expose the thyroid tissue. The continuous use of carbon dioxide can cause hypercapnia, and the continuous pressure can cause subcutaneous emphysema, and even cause serious complications such as gas embolism when the veins are damaged. In addition, the use of skin puncture hooks can cause damage to the skin of the neck, and subcutaneous, muscle, and vascular damage and bleeding may occur during the puncture process, affecting the surgical field. The use of percutaneous hanging lines also causes damage to the skin of the neck, and the fixed position is not easy to adjust, and there will also be vascular damage, which may affect the surgical field.

[0003] At the same time, both the skin puncture retractor and the percutaneous hanging thread require a full-time assistant to maintain the operation continuously throughout the entire operation. The unskilled operation of the assistant can easily hinder the operation of the surgeon, resulting in serious consequences. If the laparoscopic forceps are used to pull the anterior cervical muscles, more laparoscopic incisions need to be added, and the instrument will block part of the laparoscopic field of view during the operation, affecting the surgeon's operation: the muscle group is pulled with silk thread, but the exposure effect is limited and the pulling position cannot be moved. However, the existing laparoscopic thyroid surgery retractor still has the disadvantages of small laparoscopic field of view, poor flexibility, and inconvenient use. For this reason, we propose a laparoscopic thyroid surgery retractor to solve the above problems. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a retractor for laparoscopic thyroid surgery. The structural design of the support component and the catheter with an air bag is such that when in use, the catheter is inserted into the puncture tube sleeve, and the support component is pushed to both sides of the thyroid lesion through the tunnel formed by the puncture, and air pressure is applied to the air bag through the air inlet pipe to expand it, and cavities are built on both sides of the thyroid lesion, which is convenient for the observation and operation of laparoscopic surgical equipment. During the cavity building process, the pressure value of each air bag can be adjusted through the exhaust pipe, thereby adjusting the angle and expansion degree of the support component, thereby controlling the geometric shape of the built cavity. Compared with the traditional neck puncture retractor, the present invention does not require an additional puncture hole and is used together with the puncture hole of the laparoscopic surgical equipment. Since there is no mechanical puncture operation, it will not cause nerve damage and muscle damage, has a high safety factor, and the angle and range of surgical cavity building are adjustable. It is convenient to operate, has market prospects, and is suitable for promotion.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions.

[0008] A retractor for laparoscopic thyroid surgery comprises a catheter and a support assembly fixed at one end of the catheter, a puncture device joint is fixed at one end of the catheter away from the support assembly, the puncture device joint matches the puncture device sleeve port, an equipment through hole is provided in the catheter, an air inlet pipe and an exhaust pipe are provided in the catheter, the support assembly comprises a support frame, a guide operation cavity is provided in the support frame, three grooves are fixed on the outer wall of the support frame at equal angles, air bags are glued in the grooves, two retractor pieces are fixed on the side of the air bag away from the support frame, the two retractor pieces are arranged oppositely, the bottom ends of the retractor pieces extend into the air bag, a flexible tensioning rod is fixed between the inner wall of the air bag and the bottom end of the retractor piece, an air inlet and an exhaust port are provided in the groove of the support frame, the air bag is connected with the output end of the air inlet pipe through the air inlet, and the air bag is connected with the input end of the exhaust pipe through the exhaust port. Through the structural design of the support component and the catheter with the air bag, when in use, the catheter is inserted into the puncture tube sleeve, and the support component is pushed to the two sides of the thyroid lesion through the tunnel formed by the puncture, and air pressure is applied to the air bag through the air inlet pipe to expand it, and cavities are built on both sides of the thyroid lesion, which is convenient for the observation and operation of laparoscopic surgical equipment. During the cavity building process, the pressure value of each air bag can be adjusted through the exhaust pipe, thereby adjusting the angle and expansion degree of the support component, thereby controlling the geometric shape of the built cavity. Compared with the traditional neck puncture type retractor, the present invention does not require an additional puncture hole and is used together with the puncture hole of the laparoscopic surgical equipment. Since there is no mechanical puncture operation, it will not cause nerve damage and muscle damage, has a high safety factor, and the surgical cavity building angle and range are adjustable. The operation is convenient, has market prospects, and is suitable for promotion.

[0009] Furthermore, the connection node between the catheter and the support assembly is provided with an instrument operation hole for facilitating the passage of laparoscopic surgical equipment. The number of the instrument operation holes is three, and the three instrument operation holes are evenly arranged at equal angles. The instrument operation holes are all connected to the equipment through holes. The connection nodes between the instrument operation holes and the equipment through holes are smoothly connected with arc chamfers. The inner diameters of the instrument operation holes and the equipment through holes are equal to the outer diameter of the laparoscopic surgical equipment. Through the structural design of the three smoothly connected operation holes, no matter what angle the support assembly is at, the laparoscopic surgical equipment can choose the instrument operation hole near the lesion to smoothly extend out, thereby reducing the difficulty of surgical operation.

[0010] Furthermore, a flexible guide head is fixed to one end of the support assembly away from the catheter, and the flexible guide head is a smooth ball head or cone head structure. A guide operation cavity is provided in the support frame, and the guide operation cavity is connected to the equipment through hole. The inner diameter of the guide operation cavity is equal to that of the equipment through hole. Through the structural design of the guide operation cavity and the flexible guide head, the laparoscopic surgical equipment can extend into the guide operation cavity through the equipment through hole, and the laparoscopic surgical equipment is used to push the flexible guide head and the support assembly to smoothly reach the lesion along the tunnel established by the puncture device. The smooth flexible guide head reduces the damage to the body during the advancement process.

[0011] Furthermore, the hook piece is a hard silicone structure, and the hook piece is a long strip structure with an L-shaped cross-section. The bending directions of the two hook pieces are arranged relatively to each other. When the airbag is free, the hook heads of the two hook pieces are pulled away from each other by the airbag, and when the airbag is inflated, the hook heads of the two hook pieces are pulled close to each other by the flexible tensioning rods and clamp the subcutaneous tissue. Through the setting of the flexible tensioning rods, during the expansion of the airbag, the two hook pieces are forced to approach each other and clamp the subcutaneous tissue, so that a stable anchoring point can be formed near the lesion, thereby improving the stability of the overall structure and avoiding deformation of the surgical cavity and affecting the operation.

[0012] Furthermore, the input ends of the multiple air inlet pipes are arranged in parallel and connected to a pressure pump, and the output end of the exhaust pipe is connected to an exhaust valve. The pressure transmission of the pressure pump allows the three airbags to expand rapidly at the same time, and no twisting occurs in the early stage of cavity creation during surgery. By controlling the exhaust valves in sequence, the air pressure of the three airbags can be changed accordingly to achieve an ideal cavity size and angle.

[0013] Furthermore, the catheter comprises an inner layer, a steel wire braided layer and an outer layer from the inside to the outside, the inner layer and the outer layer are both made of medical polytetrafluoroethylene, the steel wires in the steel wire braided layer are spirally wound, and the multi-layer catheter design improves the structural strength of the catheter to prevent laparoscopic surgical equipment from puncturing the catheter. At the same time, it also prevents the air intake pipe from being expanded by air pressure and causing the catheter to deform, thereby improving the safety of use.

[0014] Furthermore, the support frame is made of elastic metal or engineering plastic, and has a cylindrical structure in a free state. The diameter of the support frame is equal to the diameter of the catheter, the outer diameter of the catheter is equal to the inner diameter of the tube sleeve of the puncture device, and the airbag deformation of the support frame is twice the diameter of the support frame.

[0015] Furthermore, the number of the support frames in use is two, and the two support frames are respectively arranged on both sides of the thyroid lesion through separate puncture devices. Through the two relatively arranged support frames, suitable surgical cavities can be supported on both sides of the lesion.

[0016] Furthermore, when the airbag is in a free state, drug particles are clamped between the hook heads of the two retractor members on the same airbag. The drug particles are anti-inflammatory drugs. Through the design of the drug particles, when the supporting skeleton is pushed to the lesion and expands, the two retractor members move to scatter the drug particles in the hook heads, thereby accurately delivering the drug particles to the lesion and reducing the risk of surgery.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) This solution adopts the structural design of the support component and the catheter with airbags. When in use, the catheter is inserted into the puncture tube sleeve, and the support component is pushed to the two sides of the thyroid lesion through the tunnel formed by the puncture. Air pressure is applied to the airbag through the air inlet pipe to expand it, and cavities are built on both sides of the thyroid lesion, which is convenient for the observation and operation of laparoscopic surgical equipment. During the cavity building process, the pressure value of each airbag can be adjusted through the exhaust pipe, thereby adjusting the angle and expansion degree of the support component, thereby controlling the geometric shape of the built cavity. Compared with the traditional neck puncture retractor, the present invention does not require additional puncture holes and can be used together with the puncture holes of laparoscopic surgical equipment. Since there is no mechanical puncture operation, it will not cause nerve damage and muscle damage. It has a high safety factor, and the angle and range of surgical cavity building are adjustable. The operation is convenient, has market prospects, and is suitable for promotion.

[0020] (2) The structural design of three smoothly connected operating holes allows the laparoscopic surgical instruments to smoothly extend out of the instrument operating holes near the lesion regardless of the angle of the support assembly, thereby reducing the difficulty of surgical operation.

[0021] (3) Through the structural design of the guide operation cavity and the flexible guide head, the laparoscopic surgical equipment can be extended into the guide operation cavity through the equipment through hole, and the laparoscopic surgical equipment can be used to push the flexible guide head and the supporting assembly along the tunnel established by the puncture device to smoothly reach the lesion. The smooth flexible guide head reduces the damage to the body during the advancement process.

[0022] (4) By setting the flexible tie rod, during the balloon inflation process, the two hook members are forced to move closer to clamp the subcutaneous tissue, which can form a stable anchor point near the lesion, thereby improving the stability of the overall structure and preventing the surgical cavity from deforming and affecting the operation.

[0023] (5) The pressure pump delivers pressure to allow the three airbags to expand rapidly at the same time, and no twisting occurs in the early stage of cavity creation during surgery. By controlling the exhaust valves in sequence, the air pressure of the three airbags can be changed accordingly to achieve the ideal cavity size and angle.

[0024] (6) The multi-layer catheter design improves the structural strength of the catheter, preventing laparoscopic surgical instruments from puncturing the catheter. It also prevents the air intake pipe from expanding due to air pressure and causing the catheter to deform, thereby improving safety in use.

[0025] (7) Two oppositely arranged support frames can support a suitable surgical cavity on both sides of the lesion.

[0026] (8) Through the design of drug particles, when the support frame is pushed to the lesion and expands, the two retractor parts move to scatter the drug particles in the hook head, so that the drug particles can be accurately delivered to the lesion, reducing the surgical risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the present invention;

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure at the connection node between the conduit and the support assembly proposed in the present invention;

[0029] Figure 3 is a schematic diagram of the cross-sectional structure of the catheter proposed in the present invention;

[0030] Figure 4 It is a schematic diagram of the cross-sectional structure of the support assembly proposed in the present invention in a free state;

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the support assembly proposed in the present invention in an expanded state;

[0032] Figure 6 It is a schematic diagram of the structure of the present invention when in use;

[0033] Figure 7 It is a schematic diagram of the cross-sectional structure of the present invention when in use.

[0034] Description of the numbers in the figure:

[0035] 1 catheter, 2 support assembly, 21 support frame, 22 airbag, 23 air inlet, 24 exhaust port, 25 retractor, 26 flexible reinforcing bar, 27 guide operation cavity, 3 flexible guide head, 4 instrument operation hole, 5 puncture device connector, 51 equipment through hole, 52 air inlet duct, 53 exhaust duct, 6 subcutaneous tissue, 7 laparoscopic surgical equipment. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Embodiment 1:

[0040] See also Figure 1-7A retractor for laparoscopic thyroid surgery comprises a catheter 1 and a support assembly 2 fixed at one end of the catheter 1, a puncture joint 5 is fixed at the end of the catheter 1 away from the support assembly 2, the puncture joint 5 matches the puncture tube sleeve port, an equipment through hole 51 is arranged in the catheter 1, an air intake pipe 52 and an exhaust pipe 53 are arranged in the catheter 1, the support assembly 2 comprises a support frame 21, a guide operation cavity 27 is arranged in the support frame 21, three grooves are evenly divided and fixed on the outer wall of the support frame 21, and air bags 22 are glued in the grooves, two retractor pieces 25 are fixed on the side of the air bag 22 away from the support frame 21, the two retractor pieces 25 are arranged oppositely, and the bottom ends of the retractor pieces 25 extend into the air bag 22, and the air bag 22 A flexible tie rod 26 is fixed between the inner wall and the bottom end of the hook member 25, and an air inlet 23 and an exhaust port 24 are provided in the groove of the support frame 21. The airbag 22 is connected to the output end of the air inlet pipe 52 through the air inlet 23, and the airbag 22 is connected to the input end of the exhaust pipe 53 through the exhaust port 24. The catheter 1 consists of an inner layer, a steel wire braided layer and an outer layer from the inside to the outside, and both the inner layer and the outer layer are made of medical polytetrafluoroethylene. The steel wire in the steel wire braided layer is a spiral linear coil. The multi-layer structure of the catheter 1 is designed to improve the structural strength of the catheter 1, prevent the laparoscopic surgical equipment 7 from puncturing the catheter 1, and also prevent the air inlet pipe 52 from expanding due to air pressure, thereby preventing the catheter 1 from being deformed, thereby improving the safety of use.

[0041] See also Figure 1 and 2 The connection node between the catheter 1 and the support assembly 2 is provided with an instrument operation hole 4 for laparoscopic surgical instruments 7 to pass through. The number of the instrument operation holes 4 is three, and the three instrument operation holes 4 are evenly arranged at equal angles. The instrument operation holes 4 are all connected to the instrument through hole 51. The connection node between the instrument operation hole 4 and the instrument through hole 51 is smoothly connected with an arc chamfer. The inner diameters of the instrument operation hole 4 and the equipment through hole 51 are equal to the outer diameter of the laparoscopic surgical instrument 7. Through the structural design of the three smoothly connected operation holes 4, no matter what angle the support assembly 2 is at, the laparoscopic surgical instrument 7 can choose the instrument operation hole 4 near the lesion to smoothly extend out, thereby reducing the difficulty of surgical operation.

[0042] See also Figure 1 and Figure 4A flexible guide head 3 is fixed to one end of the support component 2 away from the catheter 1. The flexible guide head 3 is a smooth ball head or cone head structure. A guide operation cavity 27 is provided in the support frame 21. The guide operation cavity 27 is connected to the equipment through hole 51. The inner diameter of the guide operation cavity 27 is equal to that of the equipment through hole 51. Through the structural design of the guide operation cavity 27 and the flexible guide head 3, the laparoscopic surgical equipment 7 can extend into the guide operation cavity 27 through the equipment through hole 51, and the laparoscopic surgical equipment 7 is used to push the flexible guide head 3 and the support component 2 along the tunnel established by the puncture device to smoothly reach the lesion. The smooth flexible guide head 3 reduces the damage to the body during the advancement process.

[0043] See also Figure 4 and Figure 5 The hook piece 25 is a hard silicone structure, and the hook piece 25 is a long strip structure with an L-shaped cross-section. The hook directions of the two hook pieces 25 are arranged relatively to each other. When the airbag 22 is in a free state, the hook heads of the two hook pieces 25 are pulled away from each other by the airbag 22. When the airbag 22 is inflated, the hook heads of the two hook pieces 25 are pulled close to each other by the flexible tensioning rod 26 and clamp the subcutaneous tissue 6. Through the setting of the flexible tensioning rod 26, during the expansion of the airbag 22, the two hook pieces 25 are forced to approach each other and clamp the subcutaneous tissue 6, which can form a stable anchoring point near the lesion, thereby improving the stability of the overall structure and avoiding deformation of the surgical cavity and affecting the operation.

[0044] See also Figure 3 and Figure 4 The input ends of multiple air inlet pipes 52 are arranged in parallel and connected to a pressure pump, and the output end of the exhaust pipe 53 is connected to an exhaust valve. The pressure delivery of the pressure pump allows the three air bags 22 to expand rapidly at the same time, and no twisting occurs in the early stage of cavity creation during surgery. By controlling the exhaust valves in sequence, the air pressure of the three air bags 22 can be changed accordingly to achieve an ideal cavity size and angle.

[0045] See also Figure 4 and Figure 5 The support frame 21 is made of elastic metal or engineering plastic. The support frame 21 is a cylindrical structure in a free state. The diameter of the support frame 21 is equal to the diameter of the catheter 1. The outer diameter of the catheter 1 is equal to the inner diameter of the tube sleeve of the puncture device. The deformation of the airbag 22 of the support frame 21 is twice the diameter of the support frame 21.

[0046] See also Figure 6 and Figure 7 The number of support frames 21 in use is two, and the two support frames 21 are respectively arranged on both sides of the thyroid lesion through separate puncture devices. Through the two relatively arranged support frames 21, suitable surgical cavities can be supported on both sides of the lesion.

[0047] See also Figure 4 and Figure 5 When the airbag 22 is in a free state, drug particles are clamped between the hook heads of the two retractor members 25 on the same airbag 22. The drug particles are anti-inflammatory drugs. Through the design of the drug particles, when the support frame 21 is pushed to the lesion and expands, the two retractor members 25 move to scatter the drug particles in the hook heads, so that the drug particles can be accurately delivered to the lesion, reducing the risk of surgery.

[0048] The present invention adopts the structural design of the support component 2 with the air bag 22 and the catheter 1. When in use, the catheter 1 is inserted into the puncture tube sleeve, and the support component 2 is pushed to the two sides of the thyroid lesion through the tunnel formed by the puncture, and air pressure is applied to the air bag 22 through the air inlet pipe 52 to expand it, so as to build cavities on both sides of the thyroid lesion, which is convenient for the observation and operation of the laparoscopic surgical equipment 7. During the cavity building process, the pressure value of each air bag 22 can be adjusted through the exhaust pipe 53, so as to adjust the angle and expansion degree of the support component 2, so as to control the geometric shape of the built cavity. Compared with the traditional neck puncture type retractor, the present invention does not require an additional puncture hole and is used together with the puncture hole of the laparoscopic surgical equipment 7. Since there is no mechanical puncture operation, it will not cause nerve damage and muscle damage, has a high safety factor, and the angle and range of surgical cavity building are adjustable. It is easy to operate, has market prospects, and is suitable for promotion.

[0049] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A retractor for laparoscopic thyroid surgery, comprising a catheter (1) and a support assembly (2) fixed to one end of the catheter (1), characterized in that: A puncture device connector (5) is fixed to one end of the catheter (1) away from the support assembly (2), and the puncture device connector (5) matches the puncture device sleeve port. An equipment through hole (51) is provided in the catheter (1), and an air intake pipe (52) and an air exhaust pipe (53) are provided in the catheter (1). The support assembly (2) comprises a support frame (21), and a guide operation cavity (27) is provided in the support frame (21). Three grooves are fixed on the outer wall of the support frame (21) at equal angles, and air bags (22) are glued in each of the grooves. The air bags (22) are away from the support assembly (21). Two hook members (25) are fixed on one side of the support frame (21), and the two hook members (25) are arranged opposite to each other. The bottom ends of the hook members (25) extend into the airbag (22), and a flexible tie rod (26) is fixed between the inner wall of the airbag (22) and the bottom ends of the hook members (25). An air inlet (23) and an exhaust port (24) are provided in the groove of the support frame (21), and the airbag (22) is connected to the output end of the air inlet pipe (52) through the air inlet (23), and the airbag (22) is connected to the input end of the exhaust pipe (53) through the exhaust port (24); A flexible guide head (3) is fixed to one end of the support component (2) away from the catheter (1); the flexible guide head (3) is a smooth ball head or a conical head structure; a guide operation cavity (27) is provided inside the support frame (21); the guide operation cavity (27) is connected to the equipment through hole (51); and the inner diameters of the guide operation cavity (27) and the equipment through hole (51) are equal; The hook member (25) is a hard silicone structure, and is a long strip structure with an L-shaped cross-section. The hooks of the two hook members (25) are arranged in opposite directions. When the airbag (22) is in a free state, the hook heads of the two hook members (25) are pulled away from each other by the pulling force of the airbag (22). When the airbag (22) is inflated, the hook heads of the two hook members (25) are pulled close to each other by the pulling force of the flexible tension rod (26) and clamp the subcutaneous tissue (6).

2. A retractor for laparoscopic thyroid surgery according to claim 1, characterized in that: The connection node between the catheter (1) and the support assembly (2) is provided with an instrument operation hole (4) for facilitating the passage of laparoscopic surgical instruments (7), the number of the instrument operation holes (4) being three, the three instrument operation holes (4) being evenly arranged at equal angles, the instrument operation holes (4) being connected to the instrument through hole (51), the connection node between the instrument operation hole (4) and the instrument through hole (51) being smoothly connected with an arc chamfer, and the inner diameters of the instrument operation hole (4) and the instrument through hole (51) being equal to the outer diameter of the laparoscopic surgical instrument (7).

3. The retractor for laparoscopic thyroid surgery according to claim 1, characterized in that: The input ends of the plurality of intake pipes (52) are arranged in parallel and connected to a pressure pump, and the output end of the exhaust pipe (53) is connected to an exhaust valve.

4. The retractor for laparoscopic thyroid surgery according to claim 1, characterized in that: The catheter (1) comprises, from the inside to the outside, an inner layer, a steel wire braided layer and an outer layer, the inner layer and the outer layer are both made of medical polytetrafluoroethylene, and the steel wires in the steel wire braided layer are spirally wound linear bodies.

5. The retractor for laparoscopic thyroid surgery according to claim 1, characterized in that: The support frame (21) is made of elastic metal or engineering plastics. The support frame (21) is in a cylindrical structure in a free state. The diameter of the support frame (21) is equal to the diameter of the catheter (1). The outer diameter of the catheter (1) is equal to the inner diameter of the tube sleeve of the puncture device. The deformation of the airbag (22) of the support frame (21) is twice the diameter of the support frame (21).

6. The retractor for laparoscopic thyroid surgery according to claim 1, characterized in that: The number of the support frames (21) when in use is two, and the two support frames (21) are respectively arranged on both sides of the thyroid lesion through separate puncture devices.

7. The retractor for laparoscopic thyroid surgery according to claim 1, characterized in that: When the airbag (22) is in a free state, drug particles are clamped between the hook heads of two hook members (25) on the same airbag (22), and the drug particles are anti-inflammatory drugs.

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