Drag hook device for endoscopic thyroid surgery

Abstract

The invention provides an endoscopic thyroid surgery retractor device which comprises a pulling part, the pulling part is connected with a transition piece, the transition piece is connected with an auxiliary hook body, the auxiliary hook body is connected with a deformation piece, the deformation piece is provided with main hook bodies in a connected mode, a hollow cavity is defined by the main hook bodies and provided with an adjusting piece, and a traction piece penetrates through a pulling part channel, a transition channel and a connecting channel. A groove is formed in the upper surface of the auxiliary hook body, a limiting piece is arranged in the groove, and the traction piece integrally comprises a section A, a section B and a section C. Through the limiting effect of the auxiliary hook body, traction stability is kept, the traction piece is prevented from sliding out of a drag hook notch, and drag hook notch tearing is relieved; the distance from the middle of the adjusting piece to the inner side face of the deformation piece is changed by changing the length of the section A, so that the included angle X between the adjacent main hook bodies and the deformation piece is changed, the size of a skin traction area can be flexibly adjusted, and an operation space is provided for various endoscopic thyroid surgeries.

Description

Technical Field

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

[0002] Laparoscopic thyroid surgery is a thyroid surgery performed using a harmonic scalpel under laparoscopy. Compared with traditional open thyroid surgery, it has the advantages of less bleeding, minimal scars left, and good prognosis. Generally, a subcutaneous tunnel is created through routes such as transoral, transaxillary, or subclavicular, and then the epidermal tissue is lifted to provide an operating space for laparoscopic thyroid surgery.

[0003] The prior art supports the epidermal tissue by injecting gas into the subcutaneous tunnel to obtain the corresponding intracavitary view. However, injecting gases such as carbon dioxide may cause hypercapnia and subcutaneous emphysema. For the thyroid retractor that uses the suspension method to lift the epidermal tissue, the hook body of the retractor is inserted into the neck incision and then牵引 by a suspension frame to achieve the purpose of lifting the epidermal tissue. Most retractors can only be used in single - approach laparoscopic thyroid surgery. Moreover, most of the existing suspension retractors are in the shape of "匚". The single - hook traction setting makes the suspended area relatively limited, unable to adjust the size of the skin traction area, and unstable during oblique traction, which may cause the hook body of the retractor to slip out of the incision or aggravate the incision tear. Therefore, a new technology is needed to improve this phenomenon. Summary of the Invention

[0004] Aiming at the above problems in the prior art, the present invention provides a laparoscopic thyroid surgery retractor device, which can effectively retract the thyroid epidermal tissue, provide an operating space for various laparoscopic thyroid surgeries, has a flexible suspended area, can adjust the size of the skin traction area, and can continuously and stably retract, avoiding slipping out of the incision.

[0005] The present invention is implemented through the following technical solutions: A laparoscopic thyroid surgery retractor device includes a retracting part. The middle part of the lower surface of the retracting part is connected to the upper end of a transition part. The transition part is obliquely arranged. The lower end of the transition part is connected to the end of a secondary hook body. The end of the secondary hook body is in a deformable bent shape. The whole secondary hook body is arranged parallel to the whole transition part. The deformable part is in a horizontally folded - back profile. The two ends of the horizontally folded - back profile are respectively connected with a main hook body. Two adjacent main hook bodies are arranged in parallel. The vertically adjacent surfaces at one end of two adjacent main hook bodies are closely attached. The vertically adjacent surfaces at the other end of two adjacent main hook bodies enclose a hollow cavity. A deformable adjusting part is arranged inside the hollow cavity. The end of the adjusting part is connected to the inner side surface of the deformable part. The ends of two adjacent adjusting parts are located on both sides of the middle part of the inner side surface of the deformable part. The whole adjusting part is horizontally and transversely arranged, and the horizontally and transversely arranged adjusting part is in a closed arc - shaped structure; The pulling part is internally provided with a pulling part channel, the transition part is internally provided with a transition channel, the upper surface of the secondary hook body is provided with a groove, a limiting part is arranged inside the groove, and a connecting channel is arranged inside the bending form; The outer surface of the middle part of the adjusting part is provided with a traction fixing part, the traction fixing part is connected with the traction part, the whole traction part includes section A, section B, and section C. Among them, the traction fixing part is connected with one end of section A, section A penetrates through the adjusting part, one end of section A is located inside the closed arc contour, one end of section A penetrates through the connecting channel through the outlet at the other end of the connecting channel, the other end of section A is located inside the groove, the connection between section A and section B is limited by the limiting part, the connection between section B and section C is located at the lower port of the transition channel, section C penetrates through the pulling part channel and the transition channel, and the end of section C is connected with the traction moving part, and the traction moving part is located above the pulling part.

[0006] Further, the overall length of section A is a1, the overall length of section B is b1, the overall length of section C is c1, and b1 < a1 ≤ c1.

[0007] Further, one end of the connecting channel communicates with the groove through the side wall of the groove, the other end of the connecting channel penetrates through the deformable part, and the outlet at the other end of the connecting channel is located at the center of both ends of the adjusting part.

[0008] Further, the upper surface of the secondary hook body is closely attached to the side surface of the adjacent transition part, the outer side surface of the end of the secondary hook body is connected to the middle part of the outer side surface of the deformable part, and the other end of the secondary hook body is below the upper end of the transition part.

[0009] Further, the pulling part, the connecting part, the main hook body, and the transition part are made of stainless steel materials, and the ends of the secondary hook body, the deformable part, and the adjusting part contain medical TPE materials.

[0010] Further, in the final state, the middle part of the inner side surface of the deformable part is in a notch shape.

[0011] Further, the overall included angle X formed by the adjacent main hook body and the deformable part satisfies 0 degrees < X ≤ 180 degrees.

[0012] Further, a negative pressure channel is arranged inside the pulling part, the connecting part, the main hook body, and the transition part as a whole.

[0013] Further, the negative pressure channel inlet of the negative pressure channel is located on the lower surface of one end of the main hook body, and the negative pressure channels inside the adjacent two main hook bodies meet inside the deformable part.

[0014] Further, the outlet of the negative pressure channel is located on the upper surface of the pulling part, and a negative pressure interface is provided at the outlet of the negative pressure channel, and the negative pressure interface is connected to the upper surface of the pulling part. Beneficial effects

[0015] In this embodiment of the present invention, through the limiting effect of the secondary hook body, the main hook body, the secondary hook body, and the deformation member as a whole are stuck under the incised skin tissue through the transition member, maintaining the stability of the traction, avoiding slipping out from the retractor incision, and reducing the tearing of the retractor incision. By pulling the pulling part, the entire device is lifted. The B section extends longitudinally along the side surface of the transition member. Due to the rigidity principle of the traction member, the length of the A section is changed, thereby changing the distance from the middle of the adjusting member to the inner side surface of the deformation member. Since the outer side surface of the deformed adjusting member abuts against the vertically adjacent surfaces of the other ends of two adjacent main hook bodies, the included angle X between the adjacent main hook bodies with respect to the deformation member is changed. By changing the included angle, the size of the suspension area is changed. Compared with the "C"-shaped suspension retractor of the prior art, this device provides an operating space for various endoscopic thyroid surgeries, and at the same time, when performing stable and multi-directional suspension traction, the suspension area is flexible and the size of the pulled skin area can be adjusted. Description of the drawings

[0016] Figure 1 Partial three-dimensional view of an embodiment of the present invention; Figure 2 Overall final state three-dimensional view of an embodiment of the present invention; Figure 3 Stage cross-sectional view of an embodiment of the present invention; Figure 4 Starting state cross-sectional view of an embodiment of the present invention; Figure 5 Final state cross-sectional view of an embodiment of the present invention; Figure 6 Bottom view of the principle of the initial state change of the main hook body and the deformation member as a whole in an embodiment of the present invention; Figure 7 Bottom view of the principle of the intermediate state change of the main hook body and the deformation member as a whole in an embodiment of the present invention; Figure 8 Bottom view of the principle of the final state change of the main hook body and the deformation member as a whole in an embodiment of the present invention; Fig. 9 Overall view of the negative pressure channel structure in an embodiment of the present invention; Fig.10 Partial view of the negative pressure channel structure in an embodiment of the present invention.

[0017] In the figure: 1-pulling part; 1a-pulling part channel; 1b-negative pressure interface; 2-connecting piece; 3-transition piece; 3a-transition channel; 4-auxiliary hook body; 4a-groove; 4b-limiting piece; 4c-connecting channel; 5a-deformation piece; 5b-main hook body; 5c-hollow cavity; 5d-adjusting piece; 5e-negative pressure channel entrance; 6a-traction fixing piece; 6b-traction piece; 6c-traction movable piece; 7-skin tissue; 8-negative pressure channel. DETAILED DESCRIPTION

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

[0019] A laparoscopic thyroid surgery retractor device, such as Figure 1-Figure 10 As shown, it includes a pulling portion 1, which is arranged horizontally, and the middle part of the lower surface of the pulling portion 1 is connected with the upper end of the transition piece 3. The transition piece 3 is arranged obliquely, and the lower end of the transition piece 3 is connected with the end of the auxiliary hook body 4. The end of the auxiliary hook body 4 is in a bent shape, and the bent shape is a deformable bent shape. The auxiliary hook body 4 is vertically parallel to the transition piece 3 as a whole. The oblique setting of the transition piece 3 and the parallel setting of the auxiliary hook body 4 and the transition piece 3 as a whole can facilitate the transition piece 3 and the auxiliary hook body 4 as a whole to smoothly pass through the incision into the subcutaneous tunnel.

[0020] The upper surface of the auxiliary hook body 4 is tightly fitted with the side of the adjacent transition piece 3, the outer side of the end of the auxiliary hook body 4 is connected with the middle of the outer side of the deformable member 5a, and the other end of the auxiliary hook body 4 is below the upper end of the transition piece 3. The above arrangement facilitates the auxiliary hook body 4 to be horizontally arranged due to gravity and the deformable end of the auxiliary hook body 4 after the upper end of the transition piece 3 enters the subcutaneous tunnel. The deformable member 5a is a transverse folded back profile, and the two ends of the transverse folded back profile are respectively connected with the main hook body 5b, and the two adjacent main hook bodies 5b are arranged in parallel in the transverse direction. The above arrangement facilitates the main hook body 5b to smoothly pass through the incision as a whole and enter the subcutaneous tunnel.

[0021] The vertical adjacent surfaces at one end of two adjacent main hook bodies 5b fit tightly together, and the vertical adjacent surfaces at the other ends of the two adjacent main hook bodies 5b form a hollow cavity 5c. An adjusting member 5d is provided inside the hollow cavity 5c. The end of the adjusting member 5d is connected to the inner side surface of the deformable member 5a, and the ends of the two adjacent adjusting members 5d are located on both sides of the middle of the inner side surface of the deformable member 5a.

[0022] The adjusting member 5d is a deformable adjusting member, and the adjusting member 5d is arranged horizontally as a whole. The horizontally arranged adjusting member 5d is in a closed arc structure. The arrangement of the deformable adjusting member makes it convenient for the outer side surface of the adjusting member 5d to press against the other end vertical adjacent surfaces of the two adjacent main hook bodies 5b when the adjusting member 5d is deformed, thereby changing the size of the angle X between the adjacent main hook bodies 5b and the deformable member 5a.

[0023] Inside the pulling part 1, there is a pulling part channel 1a which runs through the upper and lower ends of the pulling part 1. Inside the transition piece 3, there is a transition channel 3a which runs through the sides of two adjacent transition pieces 3. On the upper surface of the secondary hook body 4, there is a groove 4a, and inside the groove 4a, there is a limiting piece 4b. The limiting piece 4b is a hooked body, and inside its bent shape, there is a connecting channel 4c. One end of the connecting channel 4c communicates with the groove 4a through the side wall of the groove 4a, and the other end of the connecting channel 4c runs through the deformable piece 5a. The outlet of the other end of the connecting channel 4c is located at the center of the two ends of the adjusting piece 5d.

[0024] On the outer surface of the middle part of the adjusting piece 5d, there is a traction fixing piece 6a which is connected to the traction piece 6b. The whole traction piece 6b includes a section A, a section B, and a section C. Among them, the overall length of the section A is a1, the overall length of the section B is b1, and the overall length of the section C is c1, and b1 < a1 ≤ c1. The traction fixing piece 6a is connected to one end of the section A. The section A runs through the adjusting piece 5d. One end of the section A is located inside the closed arc contour. One end of the section A runs through the connecting channel 4c through the outlet of the other end of the connecting channel 4c. The other end of the section A is located inside the groove 4a. The connection between the section A and the section B is limited by the limiting piece 4b. The connection between the section B and the section C is located at the lower port of the transition channel 3a. The section C runs through the pulling part channel 1a and the transition channel 3a. The end of the section C is connected to the traction moving piece 6c, and the traction moving piece 6c is located above the pulling part 1.

[0025] The secondary hook body 4 is arranged horizontally, and the vertical adjacent surfaces at one end of two adjacent main hook bodies 5b are closely attached. The pulling part 1, the secondary hook body 4, the deformable piece 5a, the main hook body 5b, and the transition piece 3 as a whole form a structure similar to the Chinese character "工" (worker).

[0026] In this embodiment, through the limiting effect of the secondary hook body 4, the main hook body 5b, the secondary hook body 4, and the deformable piece 5a as a whole are stuck below the incision through the transition piece 3, maintaining the stability of traction, preventing slipping out from the incision of the retractor hook, reducing the tearing of the retractor hook incision. By pulling the pulling part 1 to lift the whole device, the section B extends longitudinally along the side of the transition piece 3. Due to the rigidity principle of the traction piece 6b, the length of the section A is changed, thereby changing the distance from the middle part of the adjusting piece 5d to the inner side surface of the deformable piece 5a. Since the outer side surface of the adjusting piece 5d abuts against the vertical adjacent surfaces at the other end of two adjacent main hook bodies 5b, the included angle X between the adjacent main hook bodies 5b with respect to the deformable piece 5a is changed, and the size of the suspension area is changed by changing the included angle. The whole device is in a structure similar to the Chinese character "工" (worker). Compared with the "匚" - shaped suspension retractor in the prior art, while providing an operation space for various endoscopic thyroid surgeries, it can perform multi - directional suspension traction, the suspension area is flexible, and the size of the skin traction area can be adjusted.

[0027] In this embodiment, the middle part of the lower surface of the pulling part 1 is connected to the upper end of the transition part 3 through the connecting part 2. The connecting part 2 is vertically arranged, and the lower end of the connecting part 2 is connected to the upper end of the transition part 3. The addition of the connecting part 2 facilitates increasing the space between the pulling part 1 and the skin surface after the transition part 3 enters the subcutaneous tunnel. The obliquely arranged transition part 3 has a cross-section with an arc-shaped contour.

[0028] In this embodiment, the pulling part 1, the connecting part 2, the main hook body 5b, and the transition part 3 are made of stainless steel material. The stainless steel material is a medical material that is strong, durable, corrosion-resistant, easy to clean and disinfect, and has good biocompatibility. These characteristics enable the thyroid retractor to play a good traction role in thyroid surgery. The end of the auxiliary hook body 4, the deformable part 5a, and the adjusting part 5d contain medical TPE material. The medical TPE material has excellent elastic properties and recovery ability. During use, the end of the auxiliary hook body 4 causes the auxiliary hook body 4 to change from a horizontal state to a state of closely fitting the side surface of the adjacent transition part under the traction of the traction part. The deformable part 5a changes from a bent state to an extended state and returns to its original state after the shape change, increasing the service life of the device, having high physical strength, and good traction effect.

[0029] In this embodiment, in the final state, the middle part of the inner side surface of the deformable part 5a has a cut-off corner shape. The setting of the cut-off corner shape can increase the bending angle of the folding contour of the deformable part 5a.

[0030] In this embodiment, the included angle X formed by the adjacent main hook body and the deformable part as a whole satisfies 0° < X ≤ 180°.

[0031] In this embodiment, as Figure 9-10 shown, a negative pressure channel 8 is provided inside the pulling part 1, the connecting part 2, the transition part 3, the deformable part 5a, and the main hook body 5b as a whole. The blood and smoke in the subcutaneous tunnel can be sucked out through the negative pressure channel 8 to keep the operation visual field clear.

[0032] In this embodiment, the negative pressure channel inlet 5e of the negative pressure channel 8 is located on the lower surface of one end of the main hook body 5b. The negative pressure channels 8 inside the adjacent two main hook bodies 5b converge inside the deformable part 5a. The outlet of the negative pressure channel 8 is located on the upper surface of the pulling part 1. A negative pressure interface 1b is provided at the outlet of the negative pressure channel 8, and the negative pressure interface 1b is connected to the upper surface of the pulling part 1.

[0033] The working process of performing endoscopic thyroidectomy through the oral approach in this embodiment is as follows: S1 Installation: Connect the negative pressure suction device to the negative pressure interface 1b, so that the vertical adjacent surfaces of one end of two adjacent main hook bodies 5b in the device are closely fitted, the distance from the middle of the adjusting member 5d to the middle of the inner side surface of the deforming member 5a is L1, and the distance between the lower end of the traction movable member 6c and the upper surface of the pulling part 1 is S, and the traction movable member 6c is pulled so that the auxiliary hook body 4 is arranged in parallel with the transition piece 3 as a whole, and the upper surface of the auxiliary hook body 4 is closely fitted with the side surface of the adjacent transition piece 3; S2 Operation process: The patient's head and neck are in a backward position, so that the mandible, trachea, and sternum are on the same horizontal line. A horizontal retractor incision is made under the chin along the skin texture direction, and the skin tissue 7 is cut to expand the operation cavity; one end of the two adjacent main hook bodies 5b is passed through the incision toward the thyroid lesion and enters the subcutaneous tunnel as a whole, and the transition piece 3 and the auxiliary hook body 4 are simultaneously entered into the subcutaneous tunnel as a whole. Due to the action of gravity and the deformable end of the auxiliary hook body 4, the auxiliary hook body 4 changes from a state of being attached to the side of the adjacent transition piece 3 to a horizontal state. The lower end of the traction movable part 6c is tightly attached to the upper surface of the pulling part 1, and the two ends of the pulling part 1 are tied and fixed with sterile gauze, and the pulling part 1 is pulled outward along the transition piece 3, so that the middle, upper, and pulling parts of the transition piece 3 are located at Above the skin tissue 7, the lower end of the transition piece 3 is located below the incision, and the B section extends longitudinally along the side of the transition piece 3, and is simultaneously limited by the transverse hook incision and the limiting piece 4b to form an angled shape. Due to the rigidity principle of the traction piece 6b, the length of the C section is fixed, the B section becomes longer, and the A section becomes shorter. The outer side surface of the adjustment piece 5d abuts against the other end vertical adjacent surfaces of the two adjacent main hook bodies 5b, and the hollow cavity 5c disappears. The distance L2 from the middle of the adjustment piece 5d to the middle of the inner side surface of the deformation piece 5a satisfies L1>L2. The traction piece 6b is a horizontal and longitudinal closed arc structure as a whole. The outer side surface of the deformed adjustment piece 5d abuts against the other end vertical adjacent surfaces of the two adjacent main hook bodies 5b, so that the adjacent main hook bodies 5b form an angle X with respect to the deformation piece 5a; S3. Make longitudinal incisions through the first premolars on both sides and the center of the oral vestibule, insert puncture cannulas respectively, wherein the tube hole of the puncture cannula inserted in the center incision is used as the light source hole, the tube hole of the puncture cannula inserted in the left incision is used as the auxiliary operation hole, and the tube hole of the puncture cannula inserted in the right incision is used as the main operation hole. The stripper is inserted into the main operation hole to strip the vestibule incision to the chin of the mandible to establish a subcutaneous tunnel. During the process, the length of segment C is changed by pulling the traction movable part 6c, thereby adjusting the length of segment A, and then the size of the angle X is controlled to be between 0 degrees and 20 degrees by the length of segment A; S4 retraction: After the operation is completed, the transition piece 3 is pushed forward toward the thyroid lesion so that the transition piece 3 is located in the subcutaneous tunnel as a whole. Since segment B is no longer limited by the incision, the angle shape of segment B disappears. Due to the rigidity principle of the traction piece 6b, the distance from the middle of the adjustment piece 5d to the middle of the inner side surface of the deformation piece 5a changes from L2 to L1, and the deformation piece 5a restores the folded back contour, so that the vertical adjacent surfaces of one end of the two adjacent main hook bodies 5b are tightly fitted, and the traction movable piece 6c is pulled so that the auxiliary hook body 4 is arranged parallel to the transition piece 3 as a whole, and the upper surface of the auxiliary hook body 4 is tightly fitted with the side of the adjacent transition piece 3. By pulling outward through the pulling part 1, the transition piece 3 and the auxiliary hook body 4 as a whole, the deformation piece 5a, and the two main hook bodies 5b slide out of the horizontal hook incision in turn, and the horizontal hook incision is sutured.

[0034] Compared with the traditional thyroid retractor, the embodiment can adjust the size of the suspension area and has higher flexibility. At the same time, the setting of the auxiliary hook body makes the device more stable during the oblique traction and suspension process, avoiding the situation where the hook body of the retractor falls out of the incision and aggravates the tearing of the incision.

[0035] The workflow of laparoscopic thyroid surgery via axillary or subclavian approach in this embodiment is as follows: S1 Installation: Connect the negative pressure suction device to the negative pressure interface 1b, so that the vertical adjacent surfaces of one end of two adjacent main hook bodies 5b in the device are closely fitted, pull the traction movable part 6c, so that the auxiliary hook body 4 is arranged in parallel with the transition piece 3 as a whole, and the upper surface of the auxiliary hook body 4 is closely fitted with the side surface of the adjacent transition piece 3, and the two ends of the pulling part 1 are tied and fixed with sterile gauze; S2 operation process: make an incision through the axilla or under the clavicle, and in the process of using the ultrasonic knife to peel off the subcutaneous tissue to establish a subcutaneous tunnel in the direction of the thyroid lesion, place one end of the two adjacent main hook bodies 5b as a whole in the subcutaneous tunnel, pull the traction movable member 6c, and due to the rigidity principle of the traction member 6b, the length of section C becomes longer, the length of section B is fixed, and section A becomes shorter, so that the middle part of the adjustment member 5d is close to the middle part of the inner side surface of the deformable member 5a, and the outer side surface of the deformed adjustment member 5d is against the other end of the two adjacent main hook bodies 5b The vertical adjacent surface, so that the adjacent main hook bodies 5b form an angle X with respect to the deformable member 5a to support the subcutaneous tunnel, and instruments such as endoscopes and ultrasonic knives are placed into the subcutaneous tunnel through the incision. As the subcutaneous tunnel is established, one end of the adjacent main hook body extends into the subcutaneous tunnel and reaches the thyroid lesion; S2 Retraction: After the operation is completed, the traction movable member 6c is loosened to make the vertical adjacent surfaces of one end of two adjacent main hook bodies 5b closely fit together, and one end of the main hook body is taken out along the incision to suture the incision.

[0036] Compared with the traditional thyroid retractor, the present embodiment can adjust the size of the suspension area, has higher flexibility, is convenient for opening the subcutaneous tunnel, and has higher traction stability.

[0037] The present invention has been specifically described above in conjunction with the embodiments. Various improvements can still be made without departing from the core scope of the present invention, and equivalents can be used to replace the components therein. As long as there is no structural conflict, the various features in the embodiments disclosed in the present invention can be used in combination with each other in any way. These combinations are not exhaustively described in this specification, which is only for the purpose of saving space and resources. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed herein, but covers all technical solutions that fall within the scope of the claims.

Claims

1. A retractor device for laparoscopic thyroid surgery, characterized in that: It includes a pulling part, the middle of the lower surface of the pulling part is connected to the upper end of a transition part. The transition part is arranged obliquely, the lower end of the transition part is connected to the end of a secondary hook body. The end of the secondary hook body is in a deformable bent shape. The whole secondary hook body is arranged parallel to the whole transition part. The deformable part has a horizontally folded-back profile. The two ends of the horizontally folded-back profile are respectively connected to a main hook body. Two adjacent main hook bodies are arranged in parallel. The vertically adjacent surfaces at one end of two adjacent main hook bodies are closely attached. The vertically adjacent surfaces at the other end of two adjacent main hook bodies enclose a hollow cavity. Inside the hollow cavity, there is a deformable adjusting part. The end of the adjusting part is connected to the inner side surface of the deformable part. The ends of two adjacent adjusting parts are located on both sides of the middle of the inner side surface of the deformable part. The whole adjusting part is horizontally and transversely arranged, and the horizontally and transversely arranged adjusting part is in a closed arc structure; Inside the pulling part, there is a pulling part channel. Inside the transition part, there is a transition channel. On the upper surface of the secondary hook body, there is a groove. Inside the groove, there is a limiting part. Inside the bent shape, there is a connecting channel; On the outer surface of the middle part of the adjusting part, there is a traction fixing part. The traction fixing part is connected to a traction part. The whole traction part includes a section A, a section B, and a section C. The traction fixing part is connected to one end of the section A. The section A penetrates through the adjusting part. One end of the section A is inside the closed arc profile. One end of the section A passes through the connecting channel through the outlet at the other end of the connecting channel. The other end of the section A is inside the groove. The connection between the section A and the section B is limited by the limiting part. The connection between the section B and the section C is at the lower port of the transition channel. The section C penetrates through the pulling part channel and the transition channel. The end of the section C is connected to a traction moving part. The traction moving part is above the pulling part.

2. The laparoscopic thyroid surgery retractor device according to claim 1, characterized in that: The overall length of the section A is a1, the overall length of the section B is b1, the overall length of the section C is c1, and b1 < a1 ≤ c1.

3. The laparoscopic thyroid surgery retractor device according to claim 1, characterized in that: One end of the connecting channel communicates with the groove through the side wall of the groove. The other end of the connecting channel penetrates through the deformable part. The outlet of the other end of the connecting channel is at the center of the two ends of the adjusting part.

4. The laparoscopic thyroid surgery retractor device according to claim 1, characterized in that: The upper surface of the secondary hook body is closely attached to the side surface of the adjacent transition part. The outer side surface of the end of the secondary hook body is connected to the middle of the outer side surface of the deformable part. The other end of the secondary hook body is below the upper end of the transition part.

5. The laparoscopic thyroid surgery retractor device according to claim 1, characterized in that: The pulling part, the connecting part, the main hook body, and the transition part are made of stainless steel material. The end of the secondary hook body, the deformable part, and the adjusting part contain medical TPE material.

6. The laparoscopic thyroid surgery retractor device according to claim 1, characterized in that: In the final state, the middle of the inner side surface of the deformable part is in a shape with a missing corner.

7. The laparoscopic thyroid surgery retractor device according to claim 1, characterized in that: The included angle X formed by two adjacent main hook bodies and the whole deformable part satisfies 0 degrees < X ≤ 180 degrees.

8. The laparoscopic thyroid surgery retractor device according to claim 1, characterized in that: Inside the pulling part, the transition part, the deformable part, and the whole main hook body, there is a negative pressure channel.

9. The laparoscopic thyroid surgery retractor device according to claim 8, characterized in that: The negative pressure channel inlet of the negative pressure channel is on the lower surface of one end of the main hook body. The negative pressure channels inside two adjacent main hook bodies converge inside the deformable part.

10. The laparoscopic thyroid surgery retractor device according to claim 8, characterized in that: The outlet of the negative pressure channel is located on the upper surface of the pull portion, and a negative pressure interface is provided at the outlet of the negative pressure channel, and the negative pressure interface is connected with the upper surface of the pull portion.

Images