A flap retractor device for cochlear implant electrode implantation surgery

Abstract

The application belongs to the technical field of flap retraction, and particularly relates to a flap retraction device for cochlear implant electrode implantation surgery, which comprises a top plate, electric telescopic rods are fixedly connected to the two sides of the bottom wall of the top plate, moving boxes are symmetrically and slidably connected to the bottom wall of the top plate, guide rods are linearly and slidably connected to the bottom wall of the moving box, the guide rods are hollow, the hollow portions of the guide rods and the hollow portions of the moving boxes are in communication, and a connecting seat is coaxially and fixedly connected to the bottom end of the guide rod; the bottom wall of the suction cup is completely attached to the skin of the patient, the problem of local skin crush caused by the traditional rigid traction due to the non-tight attachment is avoided, the suction cup automatically adsorbs the skin and retracts the skin, when the skin is stretched to the limit, the horizontal traction is stopped and the skin is pulled vertically, through the linkage of the touch switch and the contact switch, the traditional traction caused by the excessive stretching of the skin is avoided, the skin is horizontally and vertically pulled, and the deep operation area is fully exposed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of skin flap retraction, and particularly relates to a skin flap retraction device for cochlear implant electrode implantation surgery. BACKGROUND

[0002] Cochlear implant electrode implantation surgery is a key operation for treating severe to extremely severe sensorineural hearing loss. The core operation needs to form a precise skin flap in the mastoid region to the cochlea region of the patient's ear, and expose the deep anatomical structures such as the mastoid bone surface and facial recess through the retracted skin flap, so as to ensure the electrode to be implanted into the cochlea smoothly. Since the anatomical space of the ear region is narrow (the skin is closely attached to the skull, and the subcutaneous tissue is thin), and is adjacent to important nerves and blood vessels such as the facial nerve and the auditory nerve, the stability, accuracy and safety of the skin flap retraction are put forward with extremely high requirements.

[0003] The skin contact structure of the existing retraction device cannot adapt to the curved skin shape of the ear and the individual differences of different patients, and is prone to local tightness, which leads to skin flap sliding or local pressure injury during the retraction process, affecting the stable exposure of the operation area. The traditional device can only achieve single-direction retraction, and it is difficult to fully expose the deep operation area, which increases the difficulty of operation. The existing device is prone to skin flap tearing and other injuries due to excessive traction, which increases the risk of surgical complications. SUMMARY

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present application provides a skin flap retraction device for cochlear implant electrode implantation surgery. The moving box is driven by the electric telescopic rod to approach the skin. The bottom wall of the suction cup is completely attached to the skin of the patient. With the movement of the electric telescopic rod, the suction cup automatically adsorbs the skin and retracts the skin. When the skin stretching reaches the limit, stop the horizontal traction and vertical pull. Through the linkage of the touch switch and the contact switch, the skin is prevented from being stretched too much due to traditional traction. The technical problems of local skin pressure injury caused by poor tightness and skin flap tearing caused by excessive traction in the prior art are solved. The horizontal and vertical double-dimension traction flexibly adjusts the traction direction and range, fully exposes the deep operation area, and solves the technical problem that the deep operation area is difficult to be fully exposed in the prior art.

[0005] To solve the above technical problems, the technical scheme adopted by the present application is as follows: the present application provides a skin flap retraction device for cochlear implant electrode implantation surgery, which comprises a top plate, the bottom wall of the top plate is fixedly connected with electric telescopic rods on both sides, the bottom wall of the top plate is symmetrically and slidably connected with moving boxes, the bottom wall of the moving box is linearly arrayed and slidably connected with guide rods, the guide rods are hollow, the hollow portions of the guide rods are in communication with the hollow portions of the moving boxes, the bottom ends of the guide rods are coaxially and fixedly connected with connecting seats, the side walls of the moving boxes are fixedly connected with air inlet pipes, the hollow portions of the moving boxes are in communication with external air sources through the air inlet pipes, the connecting seats are spherically connected with suction cups, and the suction cups are in communication with the hollow portions of the guide rods through the connecting seats.

[0006] Preferably, a guide sleeve is fixedly connected in a linear array in the moving box, the hollow part of the guide sleeve communicates with the hollow part of the moving box, the top end of the guide rod is slidingly arranged in the guide sleeve, the hollow part of the guide sleeve is provided with a guide spring, the two ends of the guide spring are fixedly connected with the top end of the guide rod and the top wall in the guide sleeve respectively, a moving plate is slidingly connected to the inner side wall of the moving box in the longitudinal direction, the moving plate is initially in contact with the top end of the guide sleeve, the bottom wall of the moving plate is fixedly connected with a push rod, and the bottom end of the push rod is fixedly connected with the top end of one of the guide rods.

[0007] Preferably, a blocking plate is fixedly connected to one side of the bottom wall of the moving plate, the side wall of the blocking plate is slidingly connected with the side wall of the moving box, and the blocking plate initially blocks the air inlet pipe.

[0008] Preferably, a guide groove is arranged on the inner side wall of the moving box, a touch switch is slidingly connected in the guide groove, the touch switch is electrically connected with the electric telescopic rod, and the touch switch is initially close to the bottom wall of the guide groove.

[0009] Preferably, a pulling sleeve is fixedly connected to the bottom wall of the moving box, the middle part of the guide rod is movably arranged in the pulling sleeve, and a moving ring is fixedly connected to the middle part of the outer circumferential wall of the guide rod coaxially.

[0010] Preferably, a locking groove is arranged in a ring shape on the connecting seat, the locking groove is arranged in communication with the hollow part of the guide rod, a I-shaped bracket is slidingly connected in a ring array in the connecting seat, one end of the I-shaped bracket is arranged in cooperation with the ball head end of the suction cup, a locking spring is sleeved on the middle part of the I-shaped bracket, and the two ends of the locking spring are fixedly connected with the other end of the I-shaped bracket and the connecting seat respectively.

[0011] Preferably, pneumatic telescopic rods are fixedly connected to the bottom wall of the top plate in a symmetrical manner, the telescopic ends of the pneumatic telescopic rods are fixedly connected with the side wall of the moving box, electromagnetic reversing valves are fixedly connected to the side wall of the top plate in a symmetrical manner, the input end of the electromagnetic reversing valve is in communication with the side wall of the moving box through an air pipe, a pressure valve is fixedly connected to the base end of the pneumatic telescopic rod, the output end of the electromagnetic reversing valve is in communication with the input end of the pressure valve and the side wall of the pulling sleeve through an air pipe respectively, and the pressure valve is electrically connected with the electromagnetic reversing valve.

[0012] The beneficial effects achieved by the above structure are as follows:

[0013] 1. This application utilizes an electric telescopic rod to move the mobile box close to the skin, ensuring the bottom wall of the suction cup is completely in contact with the patient's skin. This avoids the problem of local skin pressure injury caused by insufficient contact in traditional rigid traction. As the electric telescopic rod moves, the suction cup automatically adheres to the skin and pulls it apart. When the skin stretches to its limit, the lateral traction stops and the vertical lifting begins. Through the linkage of the touch switch and the contact switch, the excessive stretching of the skin caused by traditional traction is avoided. The lateral and vertical dual-dimensional traction allows for flexible adjustment of the traction direction and range, fully exposing the deep surgical area.

[0014] 2. The suction cup is designed with a ball joint, which allows it to swing and adjust its angle autonomously when in contact with the skin. As the electric telescopic rod moves, it moves the sealing plate away from the air inlet pipe, creating a vacuum for the suction cup, which then adheres to the skin.

[0015] 3. After adsorbing onto the skin, the skin is pulled laterally using a pneumatic telescopic rod. The air pressure inside the pneumatic telescopic rod is monitored in real time by a pressure valve. When the skin is stretched to its limit, the pressure valve automatically triggers the electromagnetic reversing valve to switch and stop the lateral pulling.

[0016] 4. After the lateral traction stops, the longitudinal traction is started simultaneously, which drives the guide rod to move longitudinally and moves the skin through the suction cup. When the touch switch contacts the contact switch, the longitudinal traction stops.

[0017] 5. When the external air source creates a vacuum to adsorb the skin onto the suction cup, the external air pressure pushes the I-beam frame to automatically lock the ball end of the suction cup, ensuring that the suction cup maintains a stable fit angle during the traction process and preventing the suction cup from shifting due to vibrations during the surgical procedure or changes in the traction force. Attached Figure Description

[0018] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the invention and do not constitute a limitation thereof.

[0019] Figure 1 This is a schematic diagram of the overall structure of a flap retraction device for cochlear implantation surgery proposed in this invention.

[0020] Figure 2 This is a schematic cross-sectional view of the flap retraction device for cochlear implantation surgery proposed in this invention.

[0021] Figure 3 This is a schematic diagram of the overall cross-sectional structure of a flap retraction device for cochlear implantation surgery proposed in this invention.

[0022] Figure 4 This is a schematic diagram of the movable box connection structure of a flap retraction device for cochlear implantation surgery proposed in this invention.

[0023] Figure 5 This is a schematic diagram of the moving box connection structure from another perspective of a flap retraction device for cochlear implantation surgery proposed in this invention.

[0024] Figure 6 This is a schematic diagram of the connecting structure of a flap retraction device for cochlear implantation surgery proposed in this invention.

[0025] Figure 7 This is a schematic diagram of the overall structure of a flap retraction device for cochlear implant electrode implantation surgery proposed in this invention from another perspective.

[0026] In the attached diagram: 1. Top plate, 2. Electric telescopic rod, 3. Moving box, 4. Guide rod, 5. Connecting seat, 11. Electromagnetic reversing valve, 12. Pressure valve, 13. Pneumatic telescopic rod, 31. Guide sleeve, 32. Pulling sleeve, 33. Moving plate, 34. Guide groove, 35. Touch switch, 36. Air inlet pipe, 37. Contact switch, 311. Guide spring, 332. Sealing plate, 41. Push rod, 42. Moving ring, 51. Suction cup, 52. Locking groove, 53. I-beam frame, 54. Locking spring.

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0029] Example 1, as Figures 1-7 As shown, this solution proposes a flap retraction device for cochlear implant electrode implantation surgery, comprising a top plate 1. Electric telescopic rods 2 are fixedly connected to both sides of the bottom wall of the top plate 1. The base of the electric telescopic rods 2 can be connected to a bed frame. A movable box 3 is symmetrically slidably connected to the bottom wall of the top plate 1. Guide rods 4 are linearly arrayed and slidably connected to the bottom wall of the movable box 3. The guide rods 4 are hollow and their hollow parts communicate with the hollow parts of the movable box 3. A connecting seat 5 is coaxially fixedly connected to the bottom end of the guide rods 4. An air inlet pipe 36 is fixedly connected to the side wall of the movable box 3. The hollow part of the movable box 3 is connected to an external air source through the air inlet pipe 36. A suction cup 51 is ball-mounted on the connecting seat 5, and the suction cup 51 communicates with the hollow part of the guide rod 4 through the connecting seat 5.

[0030] likeFigures 1-5 As shown, guide sleeves 31 are fixedly connected in a linear array inside the movable box 3. The hollow part of the guide sleeve 31 is connected to the hollow part of the movable box 3. The top end of the guide rod 4 is slidably disposed inside the guide sleeve 31. The hollow part of the guide sleeve 31 is provided with a guide spring 311. The two ends of the guide spring 311 are fixedly connected to the top end of the guide rod 4 and the inner top wall of the guide sleeve 31, respectively. The guide spring 311 is not compressed at first. The top end of the guide rod 4 is close to the inner top wall of the guide sleeve 31. A movable plate 33 is slidably connected longitudinally to the inner side wall of the movable box 3. The movable plate 33 is initially in contact with the top end of the guide sleeve 31. A push rod 41 is fixedly connected to the bottom wall of the movable plate 33. The bottom end of the push rod 41 is fixedly connected to the top end of one of the guide rods 4. When the suction cup 51 contacts the skin, the suction cup 51 drives the connecting seat 5 and the guide rod 4 to move. One of the guide rods 4 drives the push rod 41 to move. The push rod 41 drives the movable plate 33 to move, compressing the guide spring 311.

[0031] A sealing plate 332 is fixedly connected to one side of the bottom wall of the movable plate 33. The side wall of the sealing plate 332 is slidably connected to the side wall of the movable box 3. The sealing plate 332 initially blocks the air inlet pipe 36. When the sealing plate 332 moves with the movable plate 33, it stops blocking the air inlet pipe 36, and the external air source evacuates the movable box 3.

[0032] The inner side wall of the movable box 3 is provided with a guide groove 34. A touch switch 35 is slidably connected in the guide groove 34. The touch switch 35 is electrically connected to the electric telescopic rod 2. The touch switch 35 is initially close to the bottom wall of the guide groove 34. A contact switch 37 is fixedly connected to the top wall of the movable box 3. When the movable plate 33 moves close to the touch switch 35, the movable plate 33 contacts the touch switch 35. The movable plate 33 pushes the touch switch 35 to move in the guide groove 34, and at the same time the electric telescopic rod 2 stops.

[0033] The bottom wall of the movable box 3 is fixedly connected to a pull sleeve 32. The middle part of the guide rod 4 is movably disposed inside the pull sleeve 32. The middle part of the outer circumferential wall of the guide rod 4 is coaxially fixedly connected to a moving ring 42. The moving ring 42 is longitudinally slidably connected inside the pull sleeve 32. The moving ring 42 initially contacts the inner bottom wall of the pull sleeve 32. When the external air source evacuates the pull sleeve 32, it drives the moving ring 42 to move. The moving ring 42 drives the guide rod 4 to move. The guide rod 4 drives the connecting seat 5 and the suction cup 51 to move and lift the skin.

[0034] like Figures 1-2 and Figure 6As shown, the connecting seat 5 has a ring-shaped locking groove 52, which is connected to the hollow part of the guide rod 4. The connecting seat 5 has an I-beam frame 53 slidably connected in a ring array inside the connecting seat 5. One end of the I-beam frame 53 is engaged with the ball end of the suction cup 51. A locking spring 54 is sleeved in the middle of the I-beam frame 53. The two ends of the locking spring 54 are respectively fixedly connected to the other end of the I-beam frame 53 and the connecting seat 5. When the suction cup 51 contacts the skin, the suction cup 51 swings and adjusts its position in the connecting seat 5. When the external air source evacuates the suction cup 51, the locking groove 52 is evacuated. The external air pressure is greater than the air pressure in the locking groove 52, which pushes the I-beam frame 53 to move, causing one end of the I-beam frame 53 to lock the ball end of the suction cup 51, while stretching the locking spring 54.

[0035] like Figures 1-2 , Figure 4 and Figure 7 As shown, pneumatic telescopic rods 13 are symmetrically fixedly connected to the bottom wall of the top plate 1. The telescopic end of the pneumatic telescopic rod 13 is fixedly connected to the side wall of the movable box 3. Electromagnetic reversing valves 11 are symmetrically fixedly connected to the side wall of the top plate 1. The input end of the electromagnetic reversing valve 11 is connected to the side wall of the movable box 3 through an air pipe. The base end of the pneumatic telescopic rod 13 is fixedly connected to a pressure valve 12. The output end of the electromagnetic reversing valve 11 is connected to the input end of the pressure valve 12 and the side wall of the pulling sleeve 32 through air pipes. The pressure valve 12 is electrically connected to the electromagnetic reversing valve 11. When the pressure valve 12 detects that the current pressure has reached a preset value, the electromagnetic reversing valve 11 switches the output direction. The contact switch 37 is electrically connected to the electromagnetic reversing valve 11. When the movable plate 33 drives the touch switch 35 to contact the contact switch 37, the electromagnetic reversing valve 11 stops.

[0036] The base of the electric telescopic rod 2 is connected to the bed frame. The external air source is connected to the air inlet pipe 36 through the trachea. Then the electric telescopic rod 2 is started. The electric telescopic rod 2 drives the top plate 1 and the moving box 3 to move closer to the patient's skin. The moving box 3 drives the guide rod 4, the connecting seat 5 and the suction cup 51 to move. The suction cup 51 contacts the skin and swings in the connecting seat 5. The bottom wall of the suction cup 51 is in contact with the patient's skin. The suction cup 51 drives the connecting seat 5 and the guide rod 4 to move. The guide rod 4 moves in the guide sleeve 31 and compresses the guide spring 311. One of the guide rods 4 drives the push rod 41 to move. The push rod 41 drives the moving plate 33 to move. The moving plate 33 drives the sealing plate 332 away from the air inlet pipe 36. All the suction cups 51 are in contact with the patient's skin. The guide rod 4 drives the moving ring 42 to move in the pulling sleeve 32.

[0037] When the top wall of the moving plate 33 contacts the touch switch 35, the sealing plate 332 stops sealing the air inlet pipe 36, and the external air source evacuates the moving box 3 through the air inlet pipe 36. At the same time, the electric telescopic rod 2 stops, and the external air source evacuates the suction cup 51 through the guide sleeve 31, guide rod 4 and connecting seat 5. The suction cup 51 adheres to the patient's skin, the locking groove 52 is evacuated, and the external air pressure is greater than the air pressure in the locking groove 52, which pushes the I-beam frame 53 to move, causing one end of the I-beam frame 53 to lock the ball end of the suction cup 51, while stretching the locking spring 54.

[0038] When the external air source evacuates the movable box 3 through the air inlet pipe 36, it evacuates the pneumatic telescopic rod 13 through the electromagnetic reversing valve 11 and the pressure valve 12. The pneumatic telescopic rod 13 drives the movable box 3 to move, and the movable box 3 drives the guide rod 4, the connecting seat 5 and the suction cup 51 to move, pulling open the patient's skin. When the patient's skin stretches to its limit, the pneumatic telescopic rod 13 can no longer pull the skin, and the air pressure in the pneumatic telescopic rod 13 continues to decrease. When the pressure valve 12 reaches its limit, the electromagnetic reversing valve 11 stops communicating with the pressure valve 12.

[0039] When the solenoid directional valve 11 stops communicating with the pressure valve 12, the solenoid directional valve 11 communicates with the pull sleeve 32, evacuates the pull sleeve 32, drives the moving ring 42 to move, and the moving ring 42 drives the guide rod 4, the connecting seat 5 and the suction cup 51 to move, driving the skin away from the bone. One of the guide rods 4 drives the moving plate 33 to move through the push rod 41. The moving plate 33 drives the contact switch 37 to move in the guide groove 34. When the contact switch 35 contacts the contact switch 37, the solenoid directional valve 11 stops evacuating the pull sleeve 32.

[0040] After the surgery, the external air source stops evacuating the movable box 3, the guide spring 311 resets, driving the guide rod 4 to reset, the guide rod 4 drives the connecting seat 5 and suction cup 51 to reset, and at the same time the suction cup 51 stops adhering to the skin. One of the guide rods 4 drives the movable plate 33 to reset through the push rod 41, the touch switch 35 moves away from the contact switch 37, the contact switch 37 resets, at the same time the movable plate 33 drives the sealing plate 332 to block the air inlet pipe 36, the pneumatic telescopic rod 13 drives the movable box 3 to reset, the locking spring 54 resets, and drives the I-beam frame 53 to reset.

[0041] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A flap retraction device for cochlear implant electrode implantation surgery, comprising a top plate (1), wherein electrically operated telescopic rods (2) are fixedly connected to both sides of the bottom wall of the top plate (1), characterized in that: The bottom wall of the top plate (1) is symmetrically and slidably connected to a movable box (3). The bottom wall of the movable box (3) is linearly and slidably connected to a guide rod (4). The guide rod (4) is hollow and the hollow part of the guide rod (4) is connected to the hollow part of the movable box (3). The bottom end of the guide rod (4) is coaxially and fixedly connected to a connecting seat (5). The side wall of the movable box (3) is fixedly connected to an air inlet pipe (36). The hollow part of the movable box (3) is connected to an external air source through the air inlet pipe (36). A suction cup (51) is ball-connected to the connecting seat (5). The suction cup (51) is connected to the hollow part of the guide rod (4) through the connecting seat (5). The inner side wall of the movable box (3) is longitudinally slidably connected to a movable plate (33); A sealing plate (332) is fixedly connected to one side of the bottom wall of the movable plate (33). The side wall of the sealing plate (332) is slidably connected to the side wall of the movable box (3). The sealing plate (332) initially blocks the air inlet pipe (36). When the sealing plate (332) moves with the moving plate (33), the sealing of the air inlet pipe (36) stops, and the external air source evacuates the moving box (3); The connecting seat (5) is provided with a locking groove (52) in a ring shape. The locking groove (52) is connected to the hollow part of the guide rod (4). The connecting seat (5) is provided with an I-beam frame (53) in a ring array. One end of the I-beam frame (53) is engaged with the ball end of the suction cup (51). The middle part of the I-beam frame (53) is fitted with a locking spring (54). The two ends of the locking spring (54) are respectively fixedly connected to the other end of the I-beam frame (53) and the connecting seat (5). When the suction cup (51) contacts the skin, the suction cup (51) swings and adjusts its position in the connecting seat (5). When the external air source evacuates the suction cup (51), the locking groove (52) is evacuated. The external air pressure is greater than the air pressure in the locking groove (52), which pushes the I-beam frame (53) to move, thereby locking the ball end of the suction cup (51) at one end of the I-beam frame (53) and stretching the locking spring (54).

2. The flap retraction device for cochlear implant electrode implantation surgery according to claim 1, characterized in that: The movable box (3) is fixedly connected in a linear array with guide sleeves (31). The hollow part of the guide sleeve (31) is connected to the hollow part of the movable box (3). The top end of the guide rod (4) is slidably disposed in the guide sleeve (31). The bottom wall of the movable plate (33) is fixedly connected with a push rod (41). The bottom end of the push rod (41) is fixedly connected to the top end of one of the guide rods (4).

3. The flap retraction device for cochlear implant electrode implantation surgery according to claim 2, characterized in that: The inner side wall of the mobile box (3) is provided with a guide groove (34), and a touch switch (35) is slidably connected in the guide groove (34). The touch switch (35) is electrically connected to the electric telescopic rod (2), and a contact switch (37) is fixedly connected to the top wall of the mobile box (3).

4. The flap retraction device for cochlear implant electrode implantation surgery according to claim 3, characterized in that: The bottom wall of the movable box (3) is fixedly connected to a pull sleeve (32), the middle part of the guide rod (4) is movably located inside the pull sleeve (32), and the middle part of the outer circumferential wall of the guide rod (4) is coaxially fixedly connected to a movable ring (42).

5. A flap retraction device for cochlear implant electrode implantation surgery according to claim 4, characterized in that: The bottom wall of the top plate (1) is symmetrically and fixedly connected with a pneumatic telescopic rod (13). The telescopic end of the pneumatic telescopic rod (13) is fixedly connected to the side wall of the moving box (3). The side wall of the top plate (1) is symmetrically and fixedly connected with an electromagnetic reversing valve (11). The input end of the electromagnetic reversing valve (11) is connected to the side wall of the moving box (3) through an air pipe. The base end of the pneumatic telescopic rod (13) is fixedly connected to a pressure valve (12). The output end of the electromagnetic reversing valve (11) is connected to the input end of the pressure valve (12) and the side wall of the pulling sleeve (32) through an air pipe. The pressure valve (12) is electrically connected to the electromagnetic reversing valve (11). The contact switch (37) is electrically connected to the electromagnetic reversing valve (11).

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