Mixed reality head-mounted display device for war wound microsurgery

Abstract

The invention discloses mixed reality head display equipment for war wound microsurgery, and relates to the technical field of medical equipment.The mixed reality head display equipment comprises an inner base, an outer supporting shell is fixed to the outer side of the inner base, a face supporting frame is fixed to one end of the inner base, and a high-resolution display module is arranged on the inner side of the end, away from the face supporting frame, of the inner base; side supports are fixed to the inner sides of the two sides of the inner base, a bone conduction earphone is arranged at the end, away from the inner base, of each side support, a wrapping arc frame is arranged between the two bone conduction earphones, and an elastic headband is fixed to the position, located on the inner side of the wrapping arc frame, between the two side supports. According to the mixed reality head-mounted display device for the war wound microsurgery department, through the overall structure matching design, preparation operation is effectively simplified, remote surgery operation training is supported, the training difficulty of microsurgery doctors is greatly reduced, immersive three-dimensional visualization is provided, meanwhile, carrying is convenient, and the application range is wide. And the elastic headband and the supporting bridle are matched to adapt to the wearing of users with different head shapes.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a mixed reality head-mounted display device for combat trauma microsurgery. Background Art

[0002] Microsurgical devices are precision instruments used in the medical field for performing delicate surgeries. They are commonly used in surgeries that require high precision and microscopic operations, including general surgery, orthopedics, ophthalmology, otolaryngology, neurosurgery, plastic surgery, etc. However, the currently widely used microsurgical microscopes have the following disadvantages:

[0003] 1. Large volume and weight: The microsurgical microscope system is large in volume and heavy in weight, which is not conducive to forward deployment during wartime and is difficult to apply in the early treatment of combat trauma. Moreover, it occupies valuable space in the operating room and causes inconvenience to the operation of the surgical team.

[0004] 2. Complicated surgical preparation operation: It takes about twenty minutes to prepare the microscope before the operation.

[0005] 3. Long training cycle: The operation of the microsurgical microscope is complex and requires doctors and assistants who have received professional training to operate, which increases the training time and cost of the surgical team.

[0006] 4. Limited stereoscopic vision: The traditional microsurgical microscope provides visual signals with a two-dimensional view by one objective lens, which has limitations in some complex three-dimensional surgical operations.

[0007] With the development of technology, the functions of mixed reality technology have been continuously enriched, making it possible to have a head-mounted surgical microscope. Therefore, the present application proposes a mixed reality head-mounted display device for combat trauma microsurgery. Summary of the Invention

[0008] Based on this, it is necessary to provide a mixed reality head-mounted display device for combat trauma microsurgery in view of the above technical problems.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] A mixed reality head-mounted display device for combat trauma microsurgery, which is applicable to combat trauma microsurgery and can also be used in hospital microsurgery;

[0011] It includes an inner base, an outer support shell is fixed on the outside of the inner base, a face support frame is fixed at one end of the inner base, a high-resolution display module is arranged inside the inner base at the end away from the face support frame, a lens module is arranged between the outer support shell and the high-resolution display module, a control module, a transmission module and a storage module are respectively arranged at the upper end of the outer support shell, and a voice module and a sound collection hole are respectively arranged at the lower end of the outer support shell;

[0012] On both outer sides of the inner base, side brackets are fixedly installed. At one end of each side bracket away from the inner base, a bone conduction earphone is provided. A wrapping arc frame is arranged between the two bone conduction earphones. Two ends of the wrapping arc frame are respectively fixedly connected to the two side brackets. An elastic headband is fixedly installed between the two side brackets and inside the wrapping arc frame. At the upper end of the inner base near one end of the face support frame, a support strap is fixedly installed. One end of the support strap away from the inner base is fixedly connected to the wrapping arc frame.

[0013] As a preferred implementation manner of the war trauma microsurgery mixed reality head display device provided by the present invention, a face cushion is fixedly installed at one end of the face support frame away from the inner base.

[0014] As a preferred implementation manner of the war trauma microsurgery mixed reality head display device provided by the present invention, a support shaft is fixedly installed at the upper end of each bone conduction earphone. The support shaft is rotatably connected to the side bracket, and a first spur gear is fixedly installed on the outer side of the support shaft.

[0015] As a preferred implementation manner of the war trauma microsurgery mixed reality head display device provided by the present invention, a first gear groove is formed inside each side bracket and on the outer side of the first spur gear. A second spur gear is slidably connected inside the first gear groove. The second spur gear is meshed with the first spur gear. A first spring is further arranged inside the first gear groove. Two ends of the first spring are respectively fixedly connected to the side bracket and the second spur gear.

[0016] As a preferred implementation manner of the war trauma microsurgery mixed reality head display device provided by the present invention, the lens module includes a microscopic lens and a wide-angle camera. Two numerically controlled stable three-axis gimbals are installed at the lower end of the outer support shell. A microscopic lens is installed inside each numerically controlled stable three-axis gimbal. A wide-angle camera is installed at the center inside the high-resolution display module.

[0017] As a preferred implementation manner of the war trauma microsurgery mixed reality head display device provided by the present invention, a fastening arc-shaped cushion block is arranged on the outer side of the elastic headband and inside the wrapping arc frame. Guide posts are symmetrically fixedly installed on the outer side of the fastening arc-shaped cushion block. Both guide posts are located inside the wrapping arc frame and are slidably connected to the wrapping arc frame. A screw rod is fixedly installed on the outer side of the fastening arc-shaped cushion block and between the two guide posts. A hollow screw cylinder is rotatably connected inside the wrapping arc frame and on the outer side of the screw rod. The screw rod is located inside the hollow screw cylinder and is threadedly connected to the hollow screw cylinder.

[0018] As a preferred embodiment of the war trauma microsurgical mixed reality headset device provided by the present invention, a second gear groove is provided inside the wrapping arc frame and outside the hollow screw cylinder, and guide grooves are symmetrically provided inside the hollow screw cylinder.

[0019] As a preferred embodiment of the war trauma microsurgical mixed reality headset device provided by the present invention, a third flat gear is slidably connected inside the second gear groove. A grip ring is fixed outside the third flat gear and on the outside of the wrapping arc frame. The inside of the third flat gear is slidably connected to the two guide grooves. One end of the hollow screw cylinder away from the fastening arc-shaped cushion block is fixed with a handle. A second spring is sleeved outside the hollow screw cylinder near the handle end. One end of the second spring is fixed to the handle, and the other end of the second spring is fixed with a pressing ring. The pressing ring is located outside the hollow screw cylinder and is movably connected to the hollow screw cylinder. The pressing ring is in contact with the third flat gear.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The war trauma microsurgical mixed reality headset device provided by the present invention, through the overall structural cooperation design, effectively simplifies the preparation operation, is small in size and does not need to be arranged in the sterile area, greatly reduces the preoperative preparation time, and supports remote surgical operation training. It can record surgical videos and share surgical videos after surgery. It can view and learn from the surgical videos shared by other users from the first perspective of the surgeon for targeted training, greatly reducing the training difficulty of microsurgical doctors and quickly improving the microsurgical technical level;

[0022] And it provides immersive three-dimensional visualization. By using the high-resolution display module in cooperation with the lens module and combining with the 3D stereoscopic imaging technology, it can restore a highly realistic three-dimensional surgical field of view, enabling doctors to operate instruments more easily. At the same time, due to its small size and portability, it can be applied to battlefield treatment, getting rid of the limitations of large medical equipment, and used for the early hemostasis of vascular rupture, open fractures, various severed injuries, etc., moving the treatment checkpoint forward and reducing the situation of amputation caused by long transportation time and insufficient blood supply to distal tissues;

[0023] During use, it is no longer restricted by the perspective of a fixed microscope and can cooperate more independently and flexibly during the operation, providing a new option for surgeries involving more than two surgeons. Through the front-facing wide-angle camera in the center, it can provide image information of the operating room, which is displayed on the periphery of the surgical field area on the high-resolution display module, facilitating the mutual communication and cooperation among surgical staff and enabling them to understand necessary information such as the patient's vital signs. It is equipped with two autofocusing microscopic lenses, and the magnification is controlled through voice or gesture recognition, reducing physical operations and enhancing usability. The surgical area is automatically locked by two numerically controlled stable three-axis gimbals, and visual locking is achieved by pasting markers around the surgical field, ensuring that minor movements do not affect the observation of the surgical field and alleviating the physical and mental burdens on surgeons caused by maintaining a fixed posture for a long time. Outside the surgical field of the high-resolution display module, intelligent anatomical diagrams can be retrieved for intraoperative comparative analysis, comparing the courses of nerves and blood vessels and the anatomy of perforating blood vessels, facilitating the confirmation of the surgical area during the operation and determining the final surgical plan. By making full use of mixed reality technology, it helps doctors handle surgical operations more calmly.

[0024] It is equipped with an adjustable headband, a support strap, and a fastening arc-shaped cushion with adjustable distance to fit the wearing of users with different head shapes, effectively improving the applicability of this device. At the same time, a facial support frame and a facial cushion are used to ensure comfort during long-term wearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the solutions in the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following-described drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of the overall structure of the war trauma microsurgical mixed reality head-mounted display device provided by the present invention;

[0027] Figure 2 It is a rear view of the overall structure of the war trauma microsurgical mixed reality head-mounted display device provided by the present invention;

[0028] Figure 3 It is a schematic diagram of the inner and outer sides of the inner base of the war trauma microsurgical mixed reality head-mounted display device provided by the present invention;

[0029] Figure 4 It is a schematic diagram of the outer side of the outer support shell of the war trauma microsurgical mixed reality head-mounted display device provided by the present invention;

[0030] Figure 5 It is a schematic diagram of the structure between the side bracket and the bone conduction earphone of the war trauma microsurgical mixed reality head-mounted display device provided by the present invention;

[0031] Figure 6 Schematic structural diagram of the wrapping arc frame of the war trauma microsurgery mixed reality headset device provided by the present invention;

[0032] Figure 7 Schematic structural diagram between the wrapping arc frame and the fastening arc-shaped cushion block of the war trauma microsurgery mixed reality headset device provided by the present invention;

[0033] Figure 8 Schematic structural diagram between the wrapping arc frame and the hollow screw cylinder of the war trauma microsurgery mixed reality headset device provided by the present invention.

[0034] The markings in the figure are explained as follows:

[0035] 1. Inner base; 2. Outer support shell; 3. Facial support frame; 4. Facial cushion; 5. High-resolution display module; 6. Control module; 7. Transmission module; 8. Storage module; 11. Side support; 12. Support shaft; 13. Bone conduction earphone; 14. First flat gear; 15. First gear groove; 16. Second flat gear; 17. First spring; 18. Wrapping arc frame; 19. Elastic headband; 20. Support strap; 21. Fastening arc-shaped cushion block; 22. Guide post; 23. Screw; 24. Hollow screw cylinder; 25. Second gear groove; 26. Guide groove; 27. Handle; 28. Third flat gear; 29. Holding ring; 30. Second spring; 31. Extrusion ring; 32. Voice module; 33. Sound receiving hole; 34. Microscopic lens; 35. Wide-angle camera. Detailed implementation manners

[0036] As described in the background art, the currently widely used microsurgical microscope has the following disadvantages: large volume and weight, the microsurgical microscope system is large in volume and heavy in weight, which not only occupies valuable space in the operating room but also causes inconvenience to the operation of the surgical team; complex surgical preparation operations, it takes about twenty minutes to prepare the microscope before the operation; long training cycle, the operation of the microsurgical microscope is complex and requires doctors and assistants who have received professional training to operate, which increases the training cost and time of the surgical team; limited stereoscopic vision, the traditional microsurgical microscope provides visual signals with 1 objective lens, which is a two-dimensional visual signal and has limitations in some complex three-dimensional surgical operations.

[0037] To solve this technical problem, the present invention provides a war trauma microsurgery mixed reality headset device, which is applied to war trauma microsurgery and can also be used in hospital microsurgery;

[0038] It includes an inner base 1, an outer support shell 2 is fixed to the outside of the inner base 1, a facial support frame 3 is fixed to one end of the inner base 1, a high-resolution display module 5 is arranged on the inner side of the end of the inner base 1 away from the facial support frame 3, a lens module is arranged between the outer support shell 2 and the high-resolution display module 5, a control module 6, a transmission module 7 and a storage module 8 are respectively arranged at the upper end of the outer support shell 2, and a voice module 32 and a sound receiving hole 33 are respectively arranged at the lower end of the outer support shell 2;

[0039] Side brackets 11 are fixed to the outer sides of both sides of the inner base 1. An osteopathic conduction earphone 13 is arranged at one end of each side bracket 11 away from the inner base 1. A wrapping arc frame 18 is arranged between the two osteopathic conduction earphones 13. Both ends of the wrapping arc frame 18 are fixed to the two side brackets 11 respectively. A tightening headband 19 is fixed between the two side brackets 11 and inside the wrapping arc frame 18. A support strap 20 is fixed to the upper end of the inner base 1 close to the facial support frame 3. One end of the support strap 20 away from the inner base 1 is fixed to the wrapping arc frame 18.

[0040] The war trauma microsurgery mixed reality head display device provided by the present invention, through the overall structural cooperation design, effectively simplifies the preparation operation, greatly reduces the preoperative preparation time, and supports remote surgical operation training. It is viewed and learned from the first perspective of the surgeon for targeted training, greatly reducing the training difficulty of microsurgery doctors. And it provides immersive three-dimensional visualization. By using the high-resolution display module 5 in cooperation with the lens module and combining with 3D stereoscopic imaging technology, a highly realistic three-dimensional surgical field can be created. At the same time, it is easy to carry. It cooperates with the tightening headband 19 and the support strap 20 to adapt to the wearing of users with different head shapes. At the same time, the facial support frame 3 and the facial cushion 4 are used to ensure the comfort of long-term wearing.

[0041] It should be noted that, without conflict, the embodiments and the features and technical solutions in the embodiments of the present invention can be combined with each other.

[0042] It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0043] Embodiment 1:

[0044] Please refer to Figure 1-8, A microsurgical mixed reality headset device for war trauma, including an inner base 1. An outer support shell 2 is fixed on the outer side of the inner base 1. One end of the inner base 1 is fixed with a facial support frame 3. The facial support frame 3 is used to fit the user's face during wearing. To further improve the fitting comfort, a facial cushion 4 is fixed at one end of the facial support frame 3 away from the inner base 1. A high-resolution display module 5 is arranged inside the inner base 1 at the end away from the facial support frame 3. A lens module is arranged between the outer support shell 2 and the high-resolution display module 5. By using the high-resolution display module 5 in cooperation with the lens module and combining with 3D stereoscopic imaging technology, a highly realistic and three-dimensional surgical field of view can be created. Specifically, the lens module includes a microscopic lens 34 and a wide-angle camera 35. Two numerically controlled stable three-axis gimbals are installed at the lower end of the outer support shell 2. A microscopic lens 34 is installed inside each numerically controlled stable three-axis gimbal. A wide-angle camera 35 is installed at the center inside the high-resolution display module 5;

[0045] A control module 6, a transmission module 7, and a storage module 8 are respectively arranged at the upper end of the outer support shell 2. The control module 6 is used to control the various functions of this device. The transmission module 7 and the storage module 8 are used to facilitate the recording, storage, sharing, and uploading of surgical videos. A voice module 32 and a sound collection hole 33 are respectively arranged at the lower end of the outer support shell 2, which cooperate with the control module 6 to realize the voice control of the device. At the same time, by using the lens module in cooperation with the control module 6, this device can recognize gestures for control;

[0046] To facilitate the user to wear this device and provide sound effect support, side brackets 11 are fixed on the outer sides of both sides of the inner base 1. A bone conduction earphone 13 is arranged at one end of each side bracket 11 away from the inner base 1. A wrapping arc frame 18 is arranged between the two bone conduction earphones 13. Both ends of the wrapping arc frame 18 are fixed to the two side brackets 11 respectively. To facilitate the wearing of users with different head shapes, a tension headband 19 is fixed between the two side brackets 11 and inside the wrapping arc frame 18. A support strap 20 is fixed at the upper end of the inner base 1 near the facial support frame 3. One end of the support strap 20 away from the inner base 1 is fixed to the wrapping arc frame 18, effectively improving the applicability of this device;

[0047] A support shaft 12 is fixed at the upper end of each bone conduction earphone 13. The support shaft 12 is rotatably connected to the side bracket 11. To facilitate the adjustment of the position of the bone conduction earphone 13 and be able to fix it after adjustment, a first spur gear 14 is fixed on the outer side of the support shaft 12. A first gear groove 15 is opened inside each side bracket 11 and outside the first spur gear 14. A second spur gear 16 is slidably connected inside the first gear groove 15. The second spur gear 16 is meshed with the first spur gear 14. A first spring 17 is also arranged inside the first gear groove 15. Both ends of the first spring 17 are fixed to the side bracket 11 and the second spur gear 16 respectively;

[0048] When it is necessary to rotate the bone conduction headset 13 around the pivot 12 to adjust the position of the bone conduction headset 13, only need to press the second flat gear 16 to make it slide into the inner side of the first gear groove 15 and squeeze the first spring 17, then the meshing between the second flat gear 16 and the first flat gear 14 can be released, so as to facilitate rotating around the pivot 12 and adjusting the position of the bone conduction headset 13. After the adjustment is completed, when the teeth of the second flat gear 16 and the first flat gear 14 are aligned, release the second flat gear 16, and use the elastic characteristic of the first spring 17 to drive the second flat gear 16 to reset, and then make the second flat gear 16 mesh with the first flat gear 14 again, so as to fix the position of the bone conduction headset 13;

[0049] To facilitate the power supply of this device, a battery module is arranged inside the inner base 1, the control module 6 is electrically connected to the battery module, and the high-resolution display module 5, the transmission module 7, the storage module 8, the bone conduction headset 13, the voice module 32, the microscopic lens 34, and the wide-angle camera 35 are all electrically connected to the control module 6;

[0050] Embodiment 2:

[0051] The war trauma microsurgical mixed reality head-mounted display device provided in Embodiment 1 is further optimized. Specifically, as Figure 6-8 shown, after the user wears this device through the elastic headband 19 and the support strap 20, in order to further tighten the wearing effect and ensure the firmness of long-term wearing, a fastening arc-shaped cushion block 21 is arranged on the outer side of the elastic headband 19 and inside the wrapping arc frame 18. Guide posts 22 are symmetrically fixed on the outer side of the fastening arc-shaped cushion block 21. Both guide posts 22 are located inside the wrapping arc frame 18 and are slidably connected to the wrapping arc frame 18. A screw rod 23 is fixed on the outer side of the fastening arc-shaped cushion block 21 and between the two guide posts 22. Inside the wrapping arc frame 18 and outside the screw rod 23, a hollow screw cylinder 24 is rotatably connected. The screw rod 23 is located inside the hollow screw cylinder 24 and is threadedly connected to the hollow screw cylinder 24;

[0052] Inside the wrapping arc frame 18 and outside the hollow screw cylinder 24, a second gear groove 25 is opened. Inside the hollow screw cylinder 24, guide grooves 26 are symmetrically opened. A third flat gear 28 is slidably connected inside the second gear groove 25. A grip ring 29 is fixed on the outer side of the third flat gear 28 and outside the wrapping arc frame 18. The inner side of the third flat gear 28 is slidably connected to the two guide grooves 26. A handle 27 is fixed at one end of the hollow screw cylinder 24 away from the fastening arc-shaped cushion block 21. A second spring 30 is sleeved on the outer side of the hollow screw cylinder 24 near the handle 27. One end of the second spring 30 is fixed to the handle 27, and the other end of the second spring 30 is fixed to a pressing ring 31. The pressing ring 31 is located outside the hollow screw cylinder 24 and is movably connected to the hollow screw cylinder 24. The pressing ring 31 is in contact with the third flat gear 28;

[0053] Pull the third flat gear 28 out of the second gear groove 25 by grasping the grip ring 29, then you can grasp the handle 27 and rotate the hollow screw cylinder 24. By using the threaded connection between the hollow screw cylinder 24 and the screw rod 23 and the sliding guidance of the guide post 22, it is convenient to drive the fastening arc-shaped cushion block 21 to move and adjust, so that the fastening arc-shaped cushion block 21 closely adheres to the user's head, further tightening the wearing effect and ensuring the firmness of long-term wearing. After the fastening arc-shaped cushion block 21 has moved and the teeth of the third flat gear 28 are aligned with the teeth of the second gear groove 25, release the grip ring 29 and use the elastic characteristic of the second spring 30 to push the extrusion ring 31. Then, through the extrusion ring 31, push the third flat gear 28 to reset to the inside of the second gear groove 25, so as to re-limit and fix the rotation of the hollow screw cylinder 24 and realize the fixation of the position of the fastening arc-shaped cushion block 21.

Claims

1. A war trauma microsurgery mixed reality head display device, characterized in that: The device comprises an inner base (1), an outer support shell (2) is fixed on the outer side of the inner base (1), a facial support frame (3) is fixed on one end of the inner base (1), a high-resolution display module (5) is arranged on the inner side of the end of the inner base (1) away from the facial support frame (3), a lens module is arranged between the outer support shell (2) and the high-resolution display module (5), a control module (6), a transmission module (7) and a storage module (8) are arranged on the upper end of the outer support shell (2), and a voice module (32) and a sound receiving hole (33) are arranged on the lower end of the outer support shell (2); Side brackets (11) are fixed to the outer sides of both sides of the inner base (1), and a bone conduction earphone (13) is arranged at one end of each side bracket (11) away from the inner base (1), and a wrapping arc frame (18) is arranged between the two bone conduction earphones (13), and the two ends of the wrapping arc frame (18) are respectively fixed to the two side brackets (11), and an elastic headband (19) is fixed between the two side brackets (11) and located inside the wrapping arc frame (18), and a support belt (20) is fixed to the upper end of the inner base (1) close to the facial support frame (3), and the end of the support belt (20) away from the inner base (1) is fixed to the wrapping arc frame (18).

2. The war trauma microsurgery mixed reality head display device according to claim 1, characterized in that: A facial cushion (4) is fixed to one end of the facial support frame (3) away from the inner base (1).

3. The war trauma microsurgery mixed reality head display device according to claim 1, characterized in that: A support shaft (12) is fixed to the upper end of each bone conduction earphone (13), the support shaft (12) is rotatably connected to the side bracket (11), and a first flat gear (14) is fixed to the outer side of the support shaft (12).

4. The war trauma microsurgery mixed reality head display device according to claim 3, characterized in that: A first gear groove (15) is provided inside each of the side brackets (11) and outside the first spur gear (14); a second spur gear (16) is slidably connected inside the first gear groove (15); the second spur gear (16) is meshingly connected with the first spur gear (14); a first spring (17) is also provided inside the first gear groove (15); two ends of the first spring (17) are respectively fixed to the side bracket (11) and the second spur gear (16).

5. The war trauma microsurgery mixed reality head display device according to claim 1, characterized in that: The lens module comprises a microscope lens (34) and a wide-angle camera (35); two digitally controlled stable three-axis pan-tilt platforms are installed at the lower end of the outer support shell (2); a microscope lens (34) is installed on the inner side of each of the digitally controlled stable three-axis pan-tilt platforms; and a wide-angle camera (35) is installed at the center of the interior of the high-resolution display module (5).

6. The war trauma microsurgery mixed reality head display device according to claim 1, characterized in that: A fastening arc pad (21) is arranged on the outside of the elastic headband (19) and located on the inside of the wrapping arc frame (18); guide posts (22) are symmetrically fixed on the outside of the fastening arc pad (21); the two guide posts (22) are both located inside the wrapping arc frame (18) and are slidably connected to the wrapping arc frame (18); a screw rod (23) is fixed on the outside of the fastening arc pad (21) and located between the two guide posts (22); a hollow screw barrel (24) is rotatably connected inside the wrapping arc frame (18) and located on the outside of the screw rod (23); the screw rod (23) is located inside the hollow screw barrel (24) and is threadedly connected to the hollow screw barrel (24).

7. The war trauma microsurgery mixed reality head display device according to claim 6, characterized in that: A second gear groove (25) is provided inside the wrapping arc frame (18) and outside the hollow screw barrel (24), and a guide groove (26) is symmetrically provided inside the hollow screw barrel (24).

8. The war trauma microsurgery mixed reality head display device according to claim 7, characterized in that: A third spur gear (28) is slidably connected to the inner side of the second gear groove (25); a grip ring (29) is fixed to the outer side of the third spur gear (28) and located on the outer side of the wrapping arc frame (18); the inner side of the third spur gear (28) is slidably connected to the two guide grooves (26); a grip handle (27) is fixed to the end of the hollow screw barrel (24) away from the fastening arc pad (21); a second spring (30) is sleeved on the outer side of the end of the hollow screw barrel (24) close to the grip handle (27); one end of the second spring (30) is fixed to the grip handle (27); the other end of the second spring (30) is fixed to an extrusion ring (31); the extrusion ring (31) is located on the outer side of the hollow screw barrel (24) and is movably connected to the hollow screw barrel (24); the extrusion ring (31) is in contact with the third spur gear (28).

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