Visual Guidance System for Minimally Invasive Surgery of Funnel Chest

Abstract

The present invention provides a visual guidance system for minimally invasive funnel chest surgery, which solves the problems such as inconvenient observation during funnel chest surgery. It includes a guide, a hook-shaped part is arranged at the front end of the guide, a holding part is arranged at the rear end of the guide, an observation groove for placing an endoscope is opened inside the hook-shaped part, a wiring channel for pipelines to pass through is arranged inside the guide and the wiring channel extends to the holding part, the hook-shaped part has a light guide groove distributed around the observation groove, and a light guide channel for a light guide bar to pass through is arranged inside the guide. The present invention has the advantages of good observation effect, stable structure, etc.

Description

Technical Field

[0001] The present invention belongs to the technical field of the diagnosis and treatment of funnel chest, and particularly relates to a visual guidance system for minimally invasive surgery of funnel chest. Background Art

[0002] Due to the inward depression of the sternal body and its corresponding bilateral 3rd to 6th costal cartilages, the anterior chest wall of funnel chest resembles a funnel, the heart is compressed and displaced, and the lungs are also restricted in movement due to the thoracic deformity, affecting the cardiopulmonary function of children. The diagnosis of funnel chest includes four aspects, namely, confirmation of the diagnosis, determination of the degree, judgment of whether there is compression of thoracic organs and combined deformities. The commonly used treatment method is minimally invasive surgery. Through the operation under the guidance of a thoracoscope, a customized metal plate is implanted to push the depressed sternum outwards for corrective surgery. All the inwardly depressed and deformed costal cartilages are also pushed outwards with the metal plate, but no ribs are resected and no pectoralis major muscle is incised. However, during the operation, the operator cannot directly observe the position of the guide device and the internal thoracic conditions, resulting in an increased surgical difficulty. In addition, the conventional observation method is inconvenient for observing the chest cavity and has a poor lighting effect.

[0003] In order to solve the deficiencies of the existing technology, people have conducted long-term explorations and proposed various solutions. For example, a Chinese patent document discloses a funnel chest NUSS correction surgery guide device with an endoscopic monitoring system [201821561749.3], which includes a guide device body and a fiber endoscope. The front end of the guide device body is a hook-shaped part, the rear end of the guide device body is connected with a handle, a groove for installing the fiber endoscope is arranged on the back surface of the guide device body along the length direction of the guide device body, the fiber endoscope is installed in the groove, the rear end of the fiber endoscope is connected with an interface A connected to an imaging system and an interface B connected to a light source system, and the interface A and the interface B are located at the handle; the front end of the fiber endoscope stops at the hook-shaped part and can move forward and backward by 2 cm in the forward direction.

[0004] The above solution solves the problem of inconvenient observation of the position of the guide device to a certain extent, but there are still many deficiencies in this solution, such as poor observation effect and other problems. Summary of the Invention

[0005] The object of the present invention is to provide a visually guided system for minimally invasive surgery of funnel chest with reasonable design and good observation effect in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions: This minimally invasive funnel chest surgery visual guidance system includes a guide. A hook-shaped part is provided at the front end of the guide, and a holding part is provided at the rear end of the guide. An observation groove for placing an endoscope is formed inside the hook-shaped part. A wiring channel for pipelines to pass through is provided inside the guide and the wiring channel extends to the holding part. The hook-shaped part has light guide grooves distributed around the observation groove, and a light guide channel for a light guide bar to pass through is provided inside the guide. An endoscope is provided inside the hook-shaped part of the guide, and at the same time, a light guide bar is equipped to improve the lighting effect and ensure stable sampling of the endoscope.

[0007] In the above minimally invasive funnel chest surgery visual guidance system, the light guide channel includes a main channel and a sub-channel arranged symmetrically. The main channel and the sub-channel are communicated with the light guide grooves. A limit jack for inserting the light guide bar is provided at one end of the light guide groove far from the light guide channel. The observation groove is arranged at the center of the light guide groove and is integrally formed with the guide. A number of inwardly protruding limit buckles are provided at the edge of the observation groove. The light guide channel guides light to both sides of the observation groove, and the light guide bars inside are relatively independent, and the brightness can be adjusted as needed to obtain the best lighting effect. The observation groove is arranged inside the hook-shaped part and the endoscope is fixed by the limit buckles.

[0008] In the above minimally invasive funnel chest surgery visual guidance system, a wiring seat body communicated with the wiring channel and the light guide channel is provided at the tail end of the holding part of the guide. The wiring seat body is equipped with a sealing and locking mechanism; the wiring seat body is vertically arranged relative to the holding part, and a clamping mechanism is arranged between the wiring seat body and the holding part. The wiring seat body is used for external wiring and light guiding, and the wiring seat body is connected to the corresponding pipelines through the wiring seat body. The wiring seat body is connected to the holding part through the clamping mechanism to prevent falling off.

[0009] In the above minimally invasive funnel chest surgery visual guidance system, the clamping mechanism includes a number of clamping strips arranged at the opposite ends of the wiring seat body and the holding part. The clamping strips are centrally symmetrically distributed, and the clamping strips are inserted and fixed with the wiring channel and the light guide channel; arc-shaped clamping grooves are provided inside the ends of the wiring channel and the light guide channel. The clamping strips are arc-shaped and fit with the arc-shaped clamping grooves. The clamping strips are inserted into the wiring channel and the light guide channel to achieve fixation. The arc-shaped clamping grooves and the clamping strips are fitted and limited, and the clamping strips have a certain elasticity to ensure stable insertion.

[0010] In the above minimally invasive funnel chest surgery visual guidance system, the sealing and locking mechanism includes a socket provided at one end of the wiring seat body far from the guide. An elastic sealing ring is provided inside the socket, and a thread is provided inside the socket. The sealing ring inside the socket further improves the sealing performance and seals the gap between the socket and the corresponding plug.

[0011] In the above-mentioned minimally invasive funnel chest surgery visual guidance system, the guide is made of stainless steel, and the outer side of the holding part is covered with a silica gel layer; the openings of the observation groove and the light guide groove are closed by a baffle made of transparent material. The stainless steel material is conducive to the disinfection treatment of the guide, and at the same time has good structural strength. The baffle closes the observation groove and the light guide groove to prevent foreign objects from invading the wiring channel and the light guide channel.

[0012] In the above-mentioned minimally invasive funnel chest surgery visual guidance system, a fluorescence endoscope is installed inside the guide. The sensing end of the fluorescence endoscope is arranged on one side of the light guide bar. A fluorescence channel for the fluorescence endoscope to pass through is arranged inside the guide; several light transmission ports communicating with the light guide channel and a daylighting port of the fluorescence channel are arranged along the extension direction of the guide. The light transmission ports and the daylighting ports are arranged adjacent to each other. The fluorescence endoscope is slidably installed inside the fluorescence channel. A positioning mechanism is arranged between the fluorescence endoscope and the holding part of the guide; the positioning mechanism includes an indicating scale arranged along the extension direction of the guide. An insertion port opposite to the fluorescence channel is opened on the holding part. A positioning sleeve is inserted inside the insertion port. Several symmetrically arranged elastic pressing strips are arranged between the inner side of the positioning sleeve and the bottom of the insertion port. The elastic pressing strips are deformed as the positioning sleeve is pressed into the insertion port and are tightly fixed to the fluorescence endoscope passing through the positioning sleeve. A positioning buckle is arranged between the outer side of the positioning sleeve and the inner side of the insertion port. The fluorescence endoscope cooperates with the light guide bar to realize fluorescence imaging during the process of the guide penetrating into the chest cavity by sensing autofluorescence, guiding the guide to avoid areas such as the great vessels of the heart.

[0013] In the above-mentioned minimally invasive funnel chest surgery visual guidance system, a separation component is arranged at the end of the hook-shaped part of the guide, and an operation component linked to the separation component is arranged on the holding part; the separation component includes a symmetric separation group and an asymmetric separation group. The separation component can bluntly separate and open the pleura between the heart and the sternum, expose the position of the pericardium of the heart, and avoid damage to the pleura caused by the guide.

[0014] In the above-mentioned minimally invasive funnel chest surgery visual guidance system, the symmetric separation group includes separation heads rotatably installed at the end of the hook-shaped part. The separation heads are symmetrically arranged, and the outer sides of the separation heads are arc-shaped. A rotation cavity is arranged inside the hook-shaped part. The separation heads have pulling ends extending into the rotation cavity and arranged in a crossed manner; the operation component includes a linkage cavity arranged inside the holding part. A linkage block extending to the outside of the holding part is slidably installed inside the linkage cavity. The linkage block is rotatably connected to the crossed part of the pulling end through an elastic rod. An elastic resetting part is arranged between the linkage block and the linkage cavity. The symmetric separation group adopts a pliers structure to control the relative angle of its separation heads to ensure the safety of pleural dissection.

[0015] In the aforementioned visual guidance system for minimally invasive pectus excavatum surgery, the asymmetric separation assembly includes a paddle rotatably mounted at the end of a hook-shaped portion. The paddle's end is arc-shaped, and the hook is internally provided with a paddle cavity. The paddle has paddle teeth rotatably mounted within the paddle cavity. The operating assembly includes a telescopic cavity disposed within the grip portion. A telescopic block slidably mounted within the cavity extends outside the grip portion. The telescopic block is connected to a telescopic piece slidably mounted within the guide. The end of the telescopic piece has a telescopic drive tooth that engages with the paddle teeth. The asymmetric separation assembly facilitates separation of the arc-shaped portion of the chest by adjusting the angle between the paddle and the hook.

[0016] Compared with the existing technology, the advantages of the present invention are: the guide is equipped with an endoscope, and has light guide strips distributed on both sides of the endoscope to ensure the surgical observation effect; the guide is equipped with a fluorescent endoscope, which can realize fluorescent development and improve the safety of the guide; the front end of the guide is provided with a separation component, which can assist the operator to perform blunt separation of the pleura and improve the safety of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of another perspective of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the hook portion of the present invention;

[0020] Figure 4 is a schematic structural diagram of the hook portion of the present invention from another perspective;

[0021] Figure 5 is a structural cross-sectional view of the introducer of the present invention;

[0022] Figure 6 is a structural cross-sectional view of the sealing and locking mechanism of the present invention;

[0023] Figure 7 is a partial cross-sectional view of the grip portion of the present invention;

[0024] Figure 8 It is a schematic structural diagram of the symmetrical separation group of the present invention;

[0025] Figure 9 is another partial cross-sectional view of the grip portion of the present invention;

[0026] Figure 10 It is a schematic structural diagram of the asymmetric separation group of the present invention;

[0027] Figure 11 is another partial cross-sectional view of the grip portion of the present invention;

[0028] In the figure, the guide 1, the wiring channel 11, the light guide channel 12, the main channel 13, the auxiliary channel 14, the limit socket 15, the hook portion 2, the observation slot 21, the light guide slot 22, the limit buckle 23, the grip portion 3, the silicone layer 31, the baffle 32, the wiring seat body 4, the sealing locking mechanism 5, the socket 51, the sealing ring 52, the clamping mechanism 6, the clamping strip 61, the arc-shaped clamping slot 62, the fluorescence endoscope 7, the fluorescence channel 71, and the light transmission port 72 , light opening 73, indicator scale 74, wire insertion port 75, positioning sleeve 76, positioning buckle 77, elastic pressure strip 78, symmetrical separation group 8, separation head 81, rotating cavity 82, pulling end 83, linkage cavity 84, linkage block 85, elastic rod 86, elastic reset part 87, asymmetrical separation group 9, dial plate 91, toggle cavity 92, toggle tooth 93, telescopic cavity 94, telescopic block 95, telescopic piece 96, telescopic drive tooth 97. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1-11 As shown, the visual guidance system for minimally invasive surgery of funnel chest includes a guide 1, a hook-shaped portion 2 is provided at the front end of the guide 1, a gripping portion 3 is provided at the rear end of the guide 1, an observation slot 21 for placing an endoscope is provided on the inner side of the hook-shaped portion 2, a wiring channel 11 for pipelines to pass through is provided inside the guide 1, and the wiring channel 11 extends to the gripping portion 3, the hook-shaped portion 2 has light guide slots 22 distributed around the observation slot 21, and a light guide channel 12 is provided inside the guide 1 for the light guide bar to pass through. When in use, the light guide bar in the light guide channel 12 is connected to a cold light source to illuminate both sides of the endoscope, wherein the light guide slot 22 is provided around the observation slot 21, and the wiring channel 11 and the light guide channel 12 are independent of each other and do not affect each other.

[0031] Specifically, the light guide channel 12 includes a symmetrically arranged main channel 13 and auxiliary channel 14. The main channel 13 and auxiliary channel 14 are connected to the light guide groove 22. The end of the light guide groove 22 away from the light guide channel 12 is provided with a limit hole 15 for inserting the light guide bar. The main channel 13 and auxiliary channel 14 are relatively independent. The light guide bar is connected to an independent cold light source. The light intensity on both sides of the endoscope can be adjusted as needed to reduce the observation blind spot.

[0032] The observation slot 21 is located in the center of the light guide slot 22 and is integrally formed with the guide 1. Several inwardly protruding stoppers 23 are provided at the edges of the observation slot 21. The stoppers 23 engage the endoscope inside the observation slot 21 to prevent it from slipping out of position. The observation slot 21 and the guide 1 are integrally formed to ensure their overall structural strength.

[0033] Furthermore, the end of the handle 3 of the guide 1 is provided with a wiring seat body 4 that communicates with the wiring channel 11 and the light guide channel 12. The wiring seat body 4 is equipped with a sealing and locking mechanism 5. The handle 3 is connected to the wiring seat body 4, and the wiring seat body 4 is connected to the wiring channel 11 and the light guide channel 12 for external wiring. The sealing and locking mechanism 5 prevents light leakage from the light guide channel 12.

[0034] Furthermore, the wire holder body 4 is vertically arranged relative to the grip portion 3, and a clamping mechanism 6 is provided between the wire holder body 4 and the grip portion 3. The clamping mechanism 6 can realize the connection between the wire holder body 4 and the grip portion 3 without using a bonding agent.

[0035] In addition, the snap-fit mechanism 6 includes a plurality of snap-fit strips 61 disposed at the end of the wiring base body 4 opposite the grip portion 3. The snap-fit strips 61 are symmetrically distributed around the center of the wiring channel 11 and the light guide channel 12. The snap-fit strips 61 in the snap-fit mechanism 6 extend into the wiring channel 11 and the light guide channel 12. The ports of the wiring channel 11 and the light guide channel 12 are arranged in a triangular shape, providing a relatively stable installation structure.

[0036] At the same time, an arc-shaped snap-in groove 62 is provided on the inner side of the ends of the wiring channel 11 and the light guide channel 12, and the snap-in strip 61 is arc-shaped and fits in the arc-shaped snap-in groove 62. The arc-shaped snap-in groove 62 fits in the outward-expanding snap-in strip 61, and self-locking is achieved after insertion.

[0037] As can be seen, the sealing and locking mechanism 5 includes a socket 51 disposed at the end of the terminal block 4 away from the guide 1. A sealing ring 52 made of elastic material is disposed inside the socket 51. The inner side of the socket 51 is provided with threads. The sealing ring 52 is pressed and fixed to the plug, and the threads inside the socket 51 are used for threaded connection with the plug.

[0038] Obviously, the guide 1 is made of stainless steel, and the outer side of the grip 3 is covered with a silicone layer 31. The silicone layer 31 has a good anti-slip effect, and is tightly covered on the outer side of the grip 3 and can be removed to disinfect the guide 1.

[0039] Preferably, the openings of the observation slot 21 and the light guide slot 22 are sealed by a transparent baffle 32. The baffle 32 is a transparent plastic sheet that covers the openings of the observation slot 21 and the light guide slot 22. Its edges and the slot body are waterproofed, sealing the wiring channel 11 and the light guide channel 12.

[0040] Obviously, a fluorescence endoscope 7 is installed inside the introducer 1. The sensing end of the fluorescence endoscope 7 is arranged on one side of the light guide bar. A fluorescence channel 71 for the fluorescence endoscope 7 to pass through is arranged inside the introducer 1; the introducer 1 is provided with a plurality of light-transmitting openings 72 communicating with the light guide channel 12 and a daylighting opening 73 of the fluorescence channel 71 along the extending direction. The light-transmitting openings 72 and the daylighting openings 73 are arranged adjacent to each other. The fluorescence endoscope 7 is slidably installed inside the fluorescence channel 71. A positioning mechanism is arranged between the fluorescence endoscope 7 and the holding part 3 of the introducer 1; the positioning mechanism includes an indicating scale 74 arranged along the extending direction of the introducer 1. The holding part 3 is provided with a wire insertion opening 75 opposite to the fluorescence channel 71. A positioning sleeve 76 is inserted inside the wire insertion opening 75. A plurality of elastic pressing strips 78 arranged in central symmetry are arranged between the inner side of the positioning sleeve 76 and the bottom of the wire insertion opening 75. The elastic pressing strips 78 are deformed as the positioning sleeve 76 is pressed into the wire insertion opening 75 and are pressed and fixed with the fluorescence endoscope 7 passing through the positioning sleeve 76. A positioning buckle 77 is arranged between the outer side of the positioning sleeve 76 and the inner side of the wire insertion opening 75. The fluorescence endoscope 7 is arranged inside the introducer 1. The relative position of the introducer 1 to the viscera is judged by fluorescence imaging. The light-transmitting opening 72 thereof allows the light guide bar inside the light guide channel 12 to irradiate ultraviolet light, and the autofluorescence of the human body is collected by the daylighting opening 73 and conducted to the sensing end of the fluorescence channel 71. The fluorescence endoscope 7 can slide inside the fluorescence channel 71 to adjust the position of its sensing end relative to the introducer 1. The indicating scale 74 on the outer side of the introducer 1 is convenient for the operator to judge the depth of the introducer 1 inserted into the chest cavity. After the position of the fluorescence endoscope 7 is fixed, the positioning sleeve 76 is inserted into the wire insertion opening 75. The elastic pressing strips 78 on the inner side thereof press the fluorescence endoscope 7 tightly, and at the same time, the positioning buckle 77 keeps the positioning sleeve 76 inserted into the wire insertion opening 75 all the time.

[0041] Specifically, a separation component is arranged at the end of the hook-shaped part 2 of the introducer 1, and an operation component linked with the separation component is arranged on the holding part 3; the separation component includes a symmetric separation group 8 and an asymmetric separation group 9. During the process of the hook-shaped part 2 of the introducer 1 being inserted into the chest cavity, the separation component at the end of the introducer 1 realizes blunt separation and opening of the pleura between the sternum and the heart, facilitating the exposure of the position of the cardiac pericardium.

[0042] Meanwhile, the symmetric separation group 8 includes separation heads 81 rotatably installed at the end of the hook-shaped part 2. The separation heads 81 are symmetrically arranged. The outer sides of the separation heads 81 are arc-shaped. A rotation cavity 82 is arranged inside the hook-shaped part 2. The separation heads 81 have pulling ends 83 extending into the rotation cavity 82 and arranged in a cross shape; the operation component includes a linkage cavity 84 arranged inside the holding part 3. A linkage block 85 extending to the outside of the holding part 3 is slidably installed inside the linkage cavity 84. The linkage block 85 is rotatably connected to the cross point of the pulling ends 83 through an elastic rod 86. An elastic resetting part 87 is arranged between the linkage block 85 and the linkage cavity 84. The separation heads 81 in the symmetric separation group 8 open and close under the pulling action of the elastic rod 86 to peel off the pleura, and after the introducer 1 is inserted into the chest cavity, it has a good protection effect on the internal soft tissues.

[0043] In addition, the asymmetric separation group 9 includes a dial plate 91 rotatably mounted at the end of the hook portion 2. The end of the dial plate 91 is arc-shaped. A dial cavity 92 is provided inside the hook portion 2. The dial plate 91 has a dial tooth 93 rotatably mounted inside the dial cavity 92. The operating component includes a telescopic cavity 94 provided inside the grip portion 3. A telescopic block 95 extending to the outside of the grip portion 3 is slidably mounted inside the telescopic cavity 94. The telescopic block 95 is connected to a telescopic piece 96 slidably mounted inside the guide 1. A telescopic drive tooth 97 is provided on one side of the end of the telescopic piece 96 to engage with the dial tooth 93. The asymmetric separation group 9 uses a single dial plate 91. The dial plate 91 deviates relative to the hook portion 2 to adapt to sternums of different curvatures during the guiding process. Pushing the telescopic piece 96 can drive the dial tooth 93 and the telescopic drive tooth 97 to engage and transmit, thereby achieving swing adjustment of the dial plate 91.

[0044] To sum up, the principle of this embodiment is that the hook-shaped part 2 at the front end of the guide 1 has an endoscope built in, and a light guide strip is arranged around the endoscope, and external wiring and light guiding are achieved through the pipelines and light guide strips in the wiring channel 11 and the light guide channel 12.

[0045] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0046] Although this article uses more of the following: guide 1, wiring channel 11, light guide channel 12, main channel 13, auxiliary channel 14, limit socket 15, hook portion 2, observation slot 21, light guide slot 22, limit buckle 23, gripping portion 3, silicone layer 31, baffle 32, wiring base body 4, sealing locking mechanism 5, socket 51, sealing ring 52, snap mechanism 6, snap strip 61, arc-shaped snap groove 62, fluorescent endoscope 7, fluorescent channel 71, light transmission port 72, light-collecting port 73 The following terms are used herein, but the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A minimally invasive funnel chest surgery visual guidance system, including a guide (1), a hook-shaped part (2) is arranged at the front end of the guide (1), and a holding part (3) is arranged at the rear end of the guide (1), characterized in that, The hook-shaped portion (2) has an observation slot (21) for placing an endoscope on its inner side, the guide (1) has a wiring channel (11) for the pipeline to pass through, and the wiring channel (11) extends to the gripping portion (3), the hook-shaped portion (2) has light guide slots (22) distributed around the observation slot (21), and the guide (1) has a light guide channel (12) for the light guide strip to pass through; the hook-shaped portion (2) of the guide (1) is provided with a separation component at the end thereof, and the gripping portion (3) is provided with a The operating assembly of the parts is linked; the separation assembly includes a symmetrical separation group (8) and an asymmetrical separation group (9); the symmetrical separation group (8) includes a separation head (81) rotatably mounted at the end of the hook portion (2), the separation head (81) is symmetrically arranged, the outer side of the separation head (81) is in an arc shape, a rotation cavity (82) is provided inside the hook portion (2), and the separation head (81) has a pulling end (83) extending into the interior of the rotation cavity (82) and arranged crosswise; the operating assembly includes a pull end (83) provided on the gripping portion (3) is provided with a linkage cavity (84), wherein a linkage block (85) extending to the outside of the gripping portion (3) is slidably installed in the linkage cavity (84), wherein the linkage block (85) is rotatably connected to the intersection of the pulling end (83) and the elastic rod (86), and an elastic reset member (87) is provided between the linkage block (85) and the linkage cavity (84); the asymmetric separation group (9) includes a dial plate (91) rotatably installed at the end of the hook portion (2), wherein the end of the dial plate (91) is in an arc shape, and the inside of the hook portion (2) is provided with a plurality of elastic reset members (87). A toggle cavity (92) is provided, and the toggle plate (91) has a toggle tooth (93) rotatably mounted inside the toggle cavity (92); the operating assembly includes a telescopic cavity (94) provided inside the gripping portion (3), a telescopic block (95) extending to the outside of the gripping portion (3) is slidably mounted inside the telescopic cavity (94), the telescopic block (95) is connected to a telescopic piece (96) slidably mounted inside the guide (1), and a telescopic driving tooth (97) is provided on one side of the end of the telescopic piece (96) for engaging with the toggle tooth (93).

2. The minimally invasive funnel chest surgery visual guidance system according to claim 1, characterized in that, The light guide channel (12) includes a main channel (13) and a secondary channel (14) that are symmetrically arranged. The main channel (13) and the secondary channel (14) are connected to the light guide groove (22). The light guide groove (22) is provided with a limit hole (15) for inserting the light guide bar at one end away from the light guide channel (12). The observation groove (21) is provided at the center of the light guide groove (22) and is integrally formed with the guide (1). The edge of the observation groove (21) is provided with a plurality of limit buckles (23) protruding inward.

3. The minimally invasive funnel chest surgery visual guidance system according to claim 1, characterized in that, At the end of the holding part (3) of the described guide (1), there is a wiring seat body (4) communicated with the wiring channel (11) and the light guide channel (12), and the wiring seat body (4) is equipped with a sealing and locking mechanism (5); the wiring seat body (4) is vertically arranged relative to the holding part (3), and a clamping mechanism (6) is arranged between the wiring seat body (4) and the holding part (3).

4. The minimally invasive funnel chest surgery visual guidance system according to claim 3, wherein The clamping mechanism (6) includes a number of clamping strips (61) arranged at the opposite ends of the wiring seat body (4) and the holding part (3). The clamping strips (61) are symmetrically distributed around the center. The clamping strips (61) are inserted and fixed with the wiring channel (11) and the light guide channel (12); inside the ends of the wiring channel (11) and the light guide channel (12), there are arc-shaped clamping grooves (62). The clamping strips (61) are arc-shaped and fit with the arc-shaped clamping grooves (62).

5. The minimally invasive funnel chest surgery visual guidance system according to claim 3, wherein The sealing and locking mechanism (5) includes a socket (51) arranged at the end of the wiring seat body (4) away from the guide (1). Inside the socket (51), there is a sealing ring (52) made of elastic material, and there is a thread inside the socket (51).

6. The minimally invasive funnel chest surgery visual guidance system according to claim 1, characterized in that, The guide (1) is made of stainless steel. The outer side of the holding part (3) is coated with a silica gel layer (31). The openings of the observation groove (21) and the light guide groove (22) are closed by a baffle (32) made of transparent material.

7. The minimally invasive funnel chest surgery visual guidance system according to claim 1, wherein, A fluorescence endoscope (7) is installed inside the guide (1). The sensing end of the fluorescence endoscope (7) is arranged on one side of the light guide bar. Inside the guide (1), there is a fluorescence channel (71) for the fluorescence endoscope (7) to pass through; along the extending direction of the guide (1), there are a number of light transmission ports (72) communicated with the light guide channel (12) and a lighting port (73) communicated with the fluorescence channel (71). The light transmission ports (72) and the lighting ports (73) are arranged adjacent to each other. The fluorescence endoscope (7) is slidably installed inside the fluorescence channel (71). A positioning mechanism is arranged between the fluorescence endoscope (7) and the holding part (3) of the guide (1); the positioning mechanism includes an indicating scale (74) arranged along the extending direction of the guide (1). The holding part (3) is provided with a wiring port (75) opposite to the fluorescence channel (71). Inside the wiring port (75), there is a positioning sleeve (76) inserted. Between the inside of the positioning sleeve (76) and the bottom of the wiring port (75), there are a number of elastic pressing strips (78) symmetrically arranged around the center. The elastic pressing strips (78) are deformed as the positioning sleeve (76) is pressed into the wiring port (75) and are tightly fixed with the fluorescence endoscope (7) passing through the positioning sleeve (76). A positioning buckle (77) is arranged between the outer side of the positioning sleeve (76) and the inner side of the wiring port (75).

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