4K fluorescent 3D endoscope for minimally invasive surgery navigation

Abstract

The utility model discloses a 4K fluorescent 3D endoscope for minimally invasive surgery navigation. The 4K fluorescent 3D endoscope comprises a camera; one end of the signal line is connected with the camera; the signal transmission device comprises a first signal connector, the other end of the signal line is detachably connected with the first signal connector, an insertion column is arranged at the end, close to the first signal connector, of the signal transmission device, and a first groove is formed in the top of the insertion column; the limiting assembly comprises a limiting sleeve and an elastic buckle, the limiting sleeve is arranged on the outer side of the insertion column in a sleeving mode, a through hole is formed in the position, corresponding to the first groove, of the limiting sleeve, and the elastic buckle is arranged on the inner wall of the limiting sleeve; when the signal line is inserted into an insertion column in the signal transmission device, the elastic buckle is extruded by the insertion column, the elastic buckle shrinks towards the interior of the limiting sleeve, meanwhile, elastic deformation is generated, and automatic locking connection of the signal line and the signal transmission device is achieved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a 4K fluorescence 3D endoscope for navigation in minimally invasive surgery. Background Technology

[0002] In the field of minimally invasive surgery, 4K fluorescence 3D endoscopes have become important surgical navigation devices. In existing technologies, the signal transmission system of endoscopes typically employs a simple plug-in connection structure, with the signal line and signal transmission device relying solely on an interference fit for mechanical connection. This connection method has significant drawbacks in practical use: when the endoscope is accidentally pulled or moved during surgery, the signal line connector is prone to loosening or even detachment, seriously affecting the continuity and safety of the surgery. This is especially true in complex surgical scenarios where surgeons need to frequently adjust the endoscope position, making the reliability issues of traditional connection structures even more pronounced. Utility Model Content

[0003] To address or partially address the aforementioned problems, this application provides a 4K fluorescence 3D endoscope for minimally invasive surgical navigation, comprising:

[0004] Camera;

[0005] A signal line, one end of which is connected to the camera;

[0006] A signal transmission device, the signal transmission device including a first signal connector, the other end of the signal line being detachably connected to the first signal connector, the signal transmission device having a post at one end near the first signal connector, and a first groove at the top of the post;

[0007] A limiting component, comprising a limiting sleeve and an elastic buckle, wherein the limiting sleeve is sleeved on the outside of the insertion post, and a through hole is provided on the limiting sleeve corresponding to the position of the first groove, and the elastic buckle is disposed on the inner wall of the limiting sleeve;

[0008] When the signal line is inserted into the post of the signal transmission device, the elastic buckle is squeezed by the post and will retract into the limiting sleeve, while generating elastic deformation, thereby realizing the automatic locking connection between the signal line and the signal transmission device.

[0009] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application: the top of the signal transmission device near the first signal connector is further provided with a second groove, and a pushing component is provided in the second groove;

[0010] The pushing assembly includes a pushing rod, a connecting plate, and a second spring. The pushing rod is slidably connected in the second groove, and one end of the pushing rod extends into the limiting groove. The connecting plate is disposed on both sides of the portion of the pushing rod located in the second groove, and the connecting plate is connected to the inner wall of the second groove by the second spring.

[0011] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application has a silicone sleeve at the top of the push rod. The silicone sleeve has a ring-shaped structure, and the inner diameter of the silicone sleeve is adapted to the outer diameter of the top of the push rod.

[0012] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application: the silicone sleeve is connected to the second groove by a snap-fit ​​connection, the inner sidewall of the silicone sleeve is provided with a snap-fit ​​protrusion, and the port edge of the second groove is provided with a snap-fit ​​groove, the snap-fit ​​protrusion and the snap-fit ​​groove cooperate with each other to achieve snap-fit ​​connection.

[0013] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application has a guide block at the bottom of the insertion column, and a guide groove at the bottom of the signal transmission device near the first signal connector. The shape of the guide groove matches the guide block, and the guide block can slide along the guide groove.

[0014] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application has a first anti-dislodgement groove and a second anti-dislodgement groove respectively provided on the two opposite side walls of the first groove. The first anti-dislodgement groove and the second anti-dislodgement groove both extend along the sliding direction of the limiting block, and the limiting block slides in the first anti-dislodgement groove and the second anti-dislodgement groove.

[0015] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application has an arc-shaped top surface of the limiting block.

[0016] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application has an annular sealing groove at one end of the signal transmission device near the first signal connector, and a sealing gasket is embedded in the annular sealing groove.

[0017] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application further includes a second signal connector, which is disposed opposite to the first signal connector.

[0018] The 4K fluorescence 3D endoscope for minimally invasive surgical navigation provided in this application further includes an LED cold light source and an ultra-high-definition endoscope. The surface of the ultra-high-definition endoscope is provided with a light source interface and a signal transmission interface. The light source interface is connected to the LED cold light source through a beam guide, and the signal transmission interface is connected to the signal transmission device.

[0019] Beneficial effects:

[0020] This application utilizes a combination of elastic clips, limiting sleeves, and inserts to achieve automatic locking and detachable connection between the signal line and the signal transmission device. This makes operation convenient and efficient, saves surgical preparation time, and facilitates maintenance. The elastic clips and limiting components work together to ensure a stable and reliable connection, preventing the signal line from loosening or falling off, ensuring stable signal transmission, and guaranteeing surgical safety. At the same time, the overall structure is reasonably compact and highly integrated, taking up little space, allowing doctors to operate flexibly, reducing interference with the surgery, and improving surgical flexibility and precision. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the 4K fluorescence 3D endoscope for minimally invasive surgical navigation proposed in this utility model.

[0022] Figure 2 This is a cross-sectional schematic diagram of the signal transmission interface of the 4K fluorescence 3D endoscope for minimally invasive surgical navigation proposed in this utility model.

[0023] Figure 3 A three-dimensional structural diagram of the signal transmission interface of the 4K fluorescence 3D endoscope for minimally invasive surgical navigation proposed in this utility model.

[0024] Figure 4 for Figure 2 Enlarged cross-sectional view of the structure at point A in the middle;

[0025] Figure 5 for Figure 2 Enlarged 3D structural diagram at point A;

[0026] 1. Camera;

[0027] 2. Signal line;

[0028] 3. Signal transmission device; 31. First signal connector; 32. Insert post; 321. First groove; 3211. First anti-detachment groove; 3212. Second anti-detachment groove; 322. Guide block; 33. Second groove; 34. Guide groove; 35. Annular sealing groove; 351. Sealing gasket; 36. Second signal connector;

[0029] 4. Limiting component; 41. First spring; 42. Limiting block; 43. Limiting groove;

[0030] 5. Pushing assembly; 51. Push rod; 511. Silicone sleeve; 52. Connecting plate; 53. Second spring;

[0031] 6. LED cold light source;

[0032] 7. Ultra-high-definition endoscope;

[0033] 8. Light source interface;

[0034] 9. Signal transmission interface;

[0035] 10. Guide beam; Detailed Implementation

[0036] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0037] To make the objectives, technical solutions, and advantages of this application more apparent, exemplary embodiments according to this application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely a part of the embodiments of this application, and not all of the embodiments of this application. It should be understood that this application is not limited to the exemplary embodiments described herein. Based on the embodiments of this application described herein, all other embodiments obtained by those skilled in the art without inventive effort should fall within the protection scope of this application.

[0038] To address the aforementioned issues, the applicant has proposed a 4K fluorescence 3D endoscope for navigation in minimally invasive surgery. Please refer to [link to relevant documentation]. Figure 3 , Figure 3 for Figure 2 The enlarged structural diagram at point A includes: camera 1, signal line 2, signal transmission device 3, and limiting component 4.

[0039] One end of the signal line 2 is connected to the camera 1. The signal transmission device 3 includes a first signal connector 31. The other end of the signal line 2 is detachably connected to the first signal connector 31. The signal transmission device 3 has a pin 32 at one end near the first signal connector 31. A first groove 321 is provided on the top of the pin 32. A limiting component 4 is disposed in the first groove 321. The limiting component 4 may include a first spring 41, a limiting block 42, and a limiting groove 43. One end of the first spring 41 is fixedly disposed on the inner wall of the first groove 321. The other end of the first spring 41 is connected to one end of the limiting block 42. The other end of the limiting block 42 is adapted to the shape of the limiting groove 43.

[0040] Specifically, during the insertion of signal line 2 into post 32, the limiting block 42 is compressed by the inner wall of post 32 and retracts into the first groove 321. At this time, the first spring 41 is in a compressed state. When signal line 2 is fully inserted into the limiting groove 43, the first spring 41 releases its elastic potential energy, pushing the limiting block 42 into the limiting groove 43 to form a rigid snap-fit ​​connection. This process requires no manual intervention and the locking mechanism is automatically triggered when the insertion action is completed. When disassembly is required, the locking state can be released by pressing the limiting block 42 with external force to make it exit the limiting groove 43.

[0041] In addition, the limiting component 4 can also be composed of a limiting sleeve and an elastic buckle. The limiting sleeve is sleeved on the outside of the insertion post, and a through hole is provided at the position of the first groove on the limiting sleeve. The elastic buckle is provided on the inner wall of the limiting sleeve.

[0042] When the signal line 2 is inserted into the post 32 of the signal transmission device 3, the elastic buckle is squeezed by the inner wall of the post 32, and the elastic buckle will shrink into the limiting sleeve and generate elastic deformation, thereby realizing the automatic locking connection between the signal line 2 and the signal transmission device 3.

[0043] refer to Figure 1 The signal transmission device 3 is also provided with a second groove 33 near the top of the first signal connector 31, and a pushing component 5 can be provided in the second groove 33.

[0044] The pushing assembly 5 may include a pushing rod 51, a connecting plate 52, and a second spring 53. The pushing rod 51 is slidably connected in the second groove 33, and one end of the pushing rod 51 extends into the limiting groove 43. The connecting plate 52 is disposed on both sides of the portion of the pushing rod 51 located in the second groove 33, and the connecting plate 52 is connected to the inner wall of the second groove 33 by the second spring 53.

[0045] The second groove 33 refers to the recessed structure set on the top of the signal transmission device 3, which can be realized by machining or injection molding. It is used to accommodate the push assembly 5 and provide space for the sliding of the push rod 51.

[0046] The push rod 51 is a rod-shaped component that can slide along the second groove 33. It can be made of metal or high-strength plastic material and is designed to extend to the limiting groove 43 so that it can directly contact the limiting block 42.

[0047] The connecting plate 52 refers to the plate-like structure fixed on both sides of the push rod 51. It can be implemented by welding or integral molding. It is used to limit the sliding direction of the push rod 51 and improve the structural stability. The second spring 53 refers to the elastic element connected between the connecting plate 52 and the inner wall of the second groove 33. It can be a helical spring or a leaf spring structure. It is used to automatically reset the push rod 51 after it is compressed.

[0048] Specifically, when it is necessary to unlock the signal line 2 and the signal transmission device 3, the push rod 51 slides towards the limiting groove 43 after being pressed by an external force. The end of the push rod 51 abuts against the limiting block 42 and forces it to compress the first spring 41 and exit the limiting groove 43. At this time, the signal line 2 can be pulled out. After the external force is released, the second spring 53 drives the connecting plate 52 and the push rod 51 back to their initial positions through elastic restoring force. Under the action of the first spring 41, the limiting block 42 re-enters the limiting groove 43 and resumes the locked state. Through the cooperation of the push rod 51 and the second spring 53, a one-way pressing unlocking operation is achieved.

[0049] In addition, a silicone sleeve 511 can be provided on the top of the push rod 51. The silicone sleeve 511 has a ring structure and the inner diameter of the silicone sleeve 511 is adapted to the outer diameter of the top of the push rod 51.

[0050] Specifically, the silicone sleeve 511 completely covers the top edge of the push rod 51 through its annular structure. When the operator presses the push rod 51, the elastic deformation characteristics of the silicone sleeve 511 can buffer the pressure of the hand, avoiding excessive local pressure caused by direct contact with hard materials. The interference fit between the inner diameter of the silicone sleeve 511 and the outer diameter of the push rod 51 creates friction between them, preventing the silicone sleeve 511 from loosening after repeated operations.

[0051] Meanwhile, the silicone sleeve 511 and the port edge of the second groove 33 can be connected by snap-fit.

[0052] Among them, snap-fit ​​connection refers to fixing between components through a mechanical interlocking structure. Specifically, it can be achieved by using a snap protrusion made of elastic material and a rigid slot. After the snap protrusion is embedded in the slot, it forms an axial limit.

[0053] The "slot protrusion" refers to the protruding structure set on the inner side wall of the silicone sleeve 511. Specifically, it can be achieved by continuous annular protrusions or spaced protrusions. The height of the protrusion can be slightly greater than the depth of the slot to form an interference fit.

[0054] The slot refers to the recessed structure set at the edge of the port of the second groove 33. Specifically, it can be implemented by an annular groove or a local pit. The width of the groove matches the width of the protrusion to limit radial displacement.

[0055] Specifically, when the silicone sleeve 511 is installed, the locking protrusion slides into the slot through elastic deformation, and the self-locking is achieved by the rebound force of the material. When disassembling, the locking protrusion is disengaged from the slot by applying reverse force. The cooperation between the locking protrusion and the slot forms a two-way constraint, preventing the silicone sleeve 511 from disengaging from the second groove 33 when the push rod 51 is subjected to axial force.

[0056] refer to Figure 2The bottom of the insertion post 32 is provided with a guide block 322, and the bottom of the signal transmission device 3 near the first signal connector 31 is provided with a guide groove 34. The shape of the guide groove 34 matches the guide block 322, and the guide block 322 can slide along the guide groove 34.

[0057] The guide block 322 refers to a protruding structure with a specific geometric shape located at the bottom of the insertion post 32. Specifically, it can be implemented using a metal block with a trapezoidal cross-section, whose cross-sectional dimensions form a clearance fit with the guide groove 34. The guide groove 34 refers to a groove structure with a complementary shape to the guide block 322, located at the bottom of the signal transmission device 3. It can be formed through precision milling, and its depth can be set to 1.2-1.5 times the height of the guide block 322. The fit between the guide block 322 and the guide groove 34 is designed to generate a forced guiding effect during insertion, constraining lateral displacement through geometric matching.

[0058] Specifically, when signal line 2 is inserted into signal transmission device 3, guide block 322 first contacts the entrance edge of guide groove 34. Under the continuous application of axial thrust, the inclined surface of guide block 322 contacts and guides the sidewall of guide groove 34. At this time, guide block 322 slides along the length of guide groove 34, forcing the insertion post 32 to maintain coaxial movement with signal transmission device 3. During this process, the sidewall of guide groove 34 continuously corrects the offset angle of insertion post 32 until the connector of signal line 2 is completely aligned with the first signal connector 31.

[0059] In addition, a first anti-detachment groove 3211 and a second anti-detachment groove 3212 are respectively provided on the opposite side walls of the first groove 321. The first anti-detachment groove 3211 and the second anti-detachment groove 3212 extend along the sliding direction of the limiting block 42, and the limiting block 42 slides in the first anti-detachment groove 3211 and the second anti-detachment groove 3212.

[0060] The first anti-detachment groove 3211 refers to a guide structure set on one side wall of the groove, which can be implemented by a rectangular groove opened in the side wall. Its extension direction is consistent with the movement trajectory of the limiting block 42 under the action of the spring, and it is used to constrain the lateral displacement of the limiting block 42. The second anti-detachment groove 3212 refers to a symmetrical guide structure set on the other side wall of the groove. Its size and shape are the same as the first anti-detachment groove 3211, and a sliding track is formed by the cooperation of the two grooves.

[0061] Specifically, when the limiting block 42 is subjected to spring force, its two side edges are embedded in the track formed by the first anti-disengagement groove 3211 and the second anti-disengagement groove 3212. During sliding, the sidewalls of the anti-disengagement grooves provide continuous guidance to the limiting block 42, preventing it from shifting laterally or rotating. When the signal line 2 is subjected to external vibration or lateral tension, the constraint effect of the anti-disengagement grooves can counteract the lateral force, ensuring that the limiting block 42 always moves in a preset direction. In the locked state, the depth and width of the anti-disengagement grooves are designed to allow the limiting block 42 to extend and retract freely, but restrict it from leaving the track range.

[0062] Furthermore, the top of the limiting block 42 can have an arc-shaped structure. This arc-shaped structure refers to the continuous curved surface formed on the top of the limiting block 42, which can be achieved using a circular arc or parabolic geometry, with a bending radius of 5-10 mm. This structure changes the geometry of the contact surface, transforming the contact method between the limiting block 42 and the anti-dislodgement mechanism from planar friction to point-line contact.

[0063] Specifically, when signal line 2 is inserted into post 32, limit block 42 slides along anti-dislodgement groove under the elastic force of first spring 41. Since the top of limit block 42 is an arc-shaped structure, its contact area with the side wall of anti-dislodgement groove is limited to tangential contact along the sliding direction, rather than planar contact.

[0064] This application further proposes that the signal transmission device 3 is provided with an annular sealing groove 35 at one end near the first signal connector 31, and a sealing gasket 351 is embedded in the annular sealing groove 35. The sealing gasket 351 can be made of silicone material.

[0065] Among them, the annular sealing groove 35 refers to the annular groove structure surrounding the connector of the signal line 2, which can be formed by machining or injection molding, and is used to accommodate the sealing gasket 351 and limit its installation position.

[0066] Specifically, when signal line 2 is connected to signal transmission device 3, the sealing gasket 351 deforms under the pressure of the insertion post 32 and the connector of signal line 2, filling the gap at the connection point. The continuous closed structure of the annular sealing groove 35 ensures that the sealing gasket 351 evenly wraps around the outer wall of the connector of signal line 2, preventing liquid or dust from entering from any direction. The elastic deformation capability of the silicone material allows the sealing gasket 351 to return to its original shape after repeated insertion and removal, maintaining its sealing performance.

[0067] refer to Figure 2 The signal transmission device 3 may also be provided with a second signal connector 36, which is distributed opposite to the first signal connector 31.

[0068] The second signal connector 36 refers to the interface component used to establish a signal transmission channel. It can be implemented using metal contacts or fiber optic interfaces, and its structural parameters, such as the contact spacing, can be from 0.5mm to 1.2mm. Opposite arrangement means that the two connectors are in opposite positions in spatial layout. This can be achieved through symmetrical arrangement or 180° reverse installation, for example, fixing the two connectors to the two ends of the signal transmission device 3 respectively.

[0069] In some implementations, the second signal connector 36 may be configured with a standardized interface of the same specifications as the first connector, such as an HDMI 2.0 protocol interface with a transmission bandwidth of 18Gbps. The spacing between the opposing connectors can be adjusted according to the device size; for example, the center-to-center distance between the two connectors may be set to 15mm to 25mm.

[0070] refer to Figure 1 This application may also include an LED cold light source 6 and an ultra-high-definition cavity mirror 7. The surface of the ultra-high-definition cavity mirror 7 is provided with a light source interface 8 and a signal transmission interface 9. The light source interface 8 is connected to the LED cold light source 6 through a beam guide, and the signal transmission interface 9 is connected to the second signal connector 36 in the signal transmission device 3.

[0071] Among them, LED cold light source 6 refers to a device that uses low-heat light-emitting diodes as the illumination source. Specifically, it can be implemented using multiple high-brightness LED arrays in conjunction with a heat dissipation substrate, thereby reducing the operating temperature and avoiding thermal damage to surrounding tissues. Ultra-high-definition endoscope 7 refers to a rigid or flexible endoscope with 4K resolution imaging capability. Specifically, it can be implemented using an integrated structure of a micro CMOS sensor and optical lens group, capturing fine anatomical structures through high pixel density. Light source interface 8 refers to the physical port used to transmit the cold light source beam. Specifically, it can be implemented using a standard bayonet or threaded interface structure, achieving mechanical connection between the optical path and the endoscope through a beam guide. Signal transmission interface 9 refers to the electrical connection port used to transmit image signals. Specifically, it can be implemented using a multi-pin waterproof socket structure, forming a stable signal channel by interfacing with signal transmission device 3. Beam guide refers to the light transmission medium composed of multiple flexible optical fibers. Specifically, it can be implemented using a bundle of glass optical fibers with a diameter range of 0.5-1.0 mm, transmitting the cold light source to the front end of the endoscope through the principle of total internal reflection. The signal transmission device 3 refers to a connector assembly containing an automatic locking structure, which can be implemented using a plug-in connector with a spring limiting mechanism to prevent accidental detachment caused by external force through mechanical locking.

[0072] Specifically, the light source interface 8 and signal transmission interface 9 are arranged separately on the surface of the endoscope, physically isolating the optical and electrical signal transmission paths. The light beam generated by the cold light source is input into the endoscope through the independent light source interface 8 via a beam guide, avoiding the temperature rise interference caused by traditional hot light sources. The image signal is output to the signal transmission device 3 with an automatic locking function through the dedicated signal transmission interface 9, forming a dual fixing mechanism. The flexible connection of the beam guide allows the endoscope to be freely adjusted in angle during surgical operations, while the rigid locking between the signal transmission interface 9 and the device ensures stable contact under tension. The separation of the optical and electrical paths reduces the probability of wire entanglement, while the dedicated interface structure provides a shielded transmission environment for high-resolution image signals.

[0073] Those skilled in the art will understand that, apart from the mutual exclusion of features, all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or elements of any method or apparatus so disclosed may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0074] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

[0075] It should be noted that the above embodiments are illustrative of this application and not limiting of it, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

[0076] The above description is merely a specific embodiment or illustration of the embodiments of this application. The scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A 4K fluorescence 3D endoscope for navigation in minimally invasive surgery, characterized in that, include: Camera; A signal line, one end of which is connected to the camera; A signal transmission device, the signal transmission device including a first signal connector, the other end of the signal line being detachably connected to the first signal connector, the signal transmission device having a post at one end near the first signal connector, and a first groove at the top of the post; A limiting component, comprising a limiting sleeve and an elastic buckle, wherein the limiting sleeve is sleeved on the outside of the insertion post, and a through hole is provided on the limiting sleeve corresponding to the position of the first groove, and the elastic buckle is disposed on the inner wall of the limiting sleeve; Wherein, when the signal line is inserted into the pin in the signal transmission device, the When the elastic buckle is pressed by the insertion post, the elastic buckle will retract into the limiting sleeve and generate elastic deformation, thereby realizing the automatic locking connection between the signal line and the signal transmission device.

2. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 1, characterized in that, The signal transmission device is also provided with a second groove at the top of one end near the first signal connector, and a pushing component is provided in the second groove; The pushing assembly includes a pushing rod, a connecting plate, and a second spring. The pushing rod is slidably connected in the second groove, and one end of the pushing rod extends into the limiting groove. The connecting plate is disposed on both sides of the portion of the pushing rod located in the second groove, and the connecting plate is connected to the inner wall of the second groove by the second spring.

3. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 2, characterized in that, A silicone sleeve is provided at the top of the push rod. The silicone sleeve has a ring structure, and the inner diameter of the silicone sleeve is adapted to the outer diameter of the top of the push rod.

4. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 3, characterized in that, The silicone sleeve and the second groove are connected by a snap-fit. The inner sidewall of the silicone sleeve is provided with a snap-fit ​​protrusion, and the port edge of the second groove is provided with a snap-fit ​​groove. The snap-fit ​​protrusion and the snap-fit ​​groove cooperate with each other to achieve snap-fit.

5. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 1, characterized in that, A guide block is provided at the bottom of the insertion post, and a guide groove is provided at the bottom of the end of the signal transmission device near the first signal connector. The shape of the guide groove matches the guide block, and the guide block can slide along the guide groove.

6. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 1, characterized in that, The first anti-detachment groove and the second anti-detachment groove are respectively provided on the two opposite side walls of the first groove. The first anti-detachment groove and the second anti-detachment groove extend along the sliding direction of the limiting block, and the limiting block slides in the first anti-detachment groove and the second anti-detachment groove.

7. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 6, characterized in that, The top of the limiting block has an arc-shaped structure.

8. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 1, characterized in that, The signal transmission device is also provided with an annular sealing groove at one end near the first signal connector, and a sealing gasket is embedded in the annular sealing groove.

9. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 1, characterized in that, The signal transmission device further includes a second signal connector, which is disposed opposite to the first signal connector.

10. The 4K fluorescence 3D endoscope for minimally invasive surgical navigation according to claim 1, characterized in that, It also includes an LED cold light source and an ultra-high-definition cavity mirror. The surface of the ultra-high-definition cavity mirror is provided with a light source interface and a signal transmission interface. The light source interface is connected to the LED cold light source through a beam guide, and the signal transmission interface is connected to the signal transmission device.

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