A suture device for skull base dura mater

Abstract

The present invention discloses a suturing device for the dura mater at the base of the skull, which relates to the technical field of medical devices and comprises a tube body and a handle. A suturing head is provided at one end of the tube body, a suturing seat is provided inside the suturing head, a clamping assembly for facilitating suturing is provided inside the suturing head; a stapling assembly for suturing the dura mater is provided inside the suturing head; and a driving assembly for providing a power source to the clamping assembly is provided inside the suturing seat. In the present invention, a pre-stretching force is applied to the area of ​​the dura mater to be sutured to form a tension gap, thereby facilitating the precise penetration of the suture staples and avoiding the situation where the dura mater cannot be effectively sutured. When the first gear sector is separated from the driven gear, the suture staples in the storage tank pushed to the compression gap by the first spring can be pressed together at a 90° vertical angle by the pressure roller, thereby achieving fast and efficient suturing of the dura mater.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a suture device for dura mater at the skull base. Background Art

[0002] In neurosurgery, the dura mater serves as a crucial connective tissue barrier surrounding brain tissue, and the quality of its suture directly impacts the likelihood of postoperative complications such as cerebrospinal fluid leakage and intracranial infection. For dura mater injuries in the skull base region, traditional craniotomy often carries a high risk of trauma due to the complex anatomy and limited operating space. Therefore, in recent years, intranasal dura mater suturing techniques have been widely adopted due to their minimally invasive and precise nature. The intranasal approach, which reaches the skull base through the natural cavities of the nasal cavity, avoids tissue damage caused by craniotomy, aligning with the development trend of minimally invasive procedures in modern neurosurgery.

[0003] However, the existing intranasal dura mater suturing technology has significant defects at the operational level. The current mainstream method requires the suture to be tied outside the nose, and then the knot is pushed to the suture site inside the nose through an instrument. This suturing method of knotting outside the body and sliding inside the body has obvious shortcomings: on the one hand, the knotting force is difficult to control accurately, which can easily lead to excessive squeezing of the dura mater tissue or loose suture; on the other hand, the knot may shift or loosen during the sliding process, causing suture position deviation, seriously affecting the airtightness and healing effect of the dura mater. In addition, repeatedly pushing the knot may also cause secondary tissue damage and increase the risk of surgical complications. There is an urgent need for a skull base dura mater suture device to solve the above problems. Summary of the Invention

[0004] In response to the problems in the related art, the present invention proposes a suture device for the skull base dura mater to overcome the above-mentioned technical problems existing in the existing related art.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A suturing device for the dura mater at the base of the skull comprises a tube body and a handle, wherein a suturing head is provided at one end of the tube body, a suturing seat is provided inside the suturing head, and a clamping assembly is provided inside the suturing head for facilitating suturing;

[0007] The interior of the suturing head is provided with a staple assembly for suturing the dura mater;

[0008] A driving assembly for providing a power source to the clamping assembly is provided inside the suturing seat, and a rotating assembly for adjusting the suturing angle of the suturing seat is provided inside the tube body;

[0009] The upper and lower inner walls of the suturing head are fixedly connected with storage grooves distributed at equal distances, and the suturing staples are arranged at equal distances inside the storage grooves, and a compression gap is formed between the ends of the two suturing staples to facilitate the subsequent pressing down of the stapling assembly for suturing;

[0010] The top outer wall of the suturing head is fixedly connected to a first shell, and a displacement component for adjusting the position of the clamping component when clamping is provided inside the first shell.

[0011] Preferably, the rotating assembly includes a first rotating column rotatably connected to one end of the tube body, one end of the first rotating column is fixedly connected to a rotating block, the other end of the first rotating column is fixedly connected to a first gear plate, the circumferential outer wall of the first gear plate is meshed with a second gear plate, the circumferential inner wall of the second gear plate is fixedly connected to the second rotating column, the circumferential outer wall of the second rotating column is connected to a second worm, the circumferential outer wall of the second worm is meshed with a second worm wheel, the circumferential inner wall of the tube body is rotatably connected to a rotating shaft, the second worm wheel is fixedly connected to the circumferential outer wall of the rotating shaft, the outer wall of one side of the second worm wheel is fixedly connected to a rotating seat, one end of the rotating seat is fixedly connected to the outer wall of one side of the suturing head, and the circumferential outer wall of the tube body is provided with a U-shaped groove for facilitating the rotation of the suturing head.

[0012] Preferably, the clamping assembly includes a first movable rod and a second movable rod rotatably connected to the inner walls on both sides of the suture seat, the first movable rod and the second movable rod are arranged in an X shape, one end of the first movable rod and the second movable rod are fixedly connected to a clamping block, one side outer wall of the first movable rod is fixedly connected to a second spring, the other end of the second spring is fixedly connected to the outer wall of one end of the second movable rod, the inner walls on both sides of the suture seat are rotatably connected to a bidirectional screw rod, both ends of the bidirectional screw rod are threadedly connected to a frustum block, the inner walls on both sides of the suture seat are fixedly connected to a U-shaped rod, a guide hole is opened inside the frustum block, and the U-shaped rod passes through the inside of the guide hole.

[0013] Preferably, the driving assembly includes a third worm gear fixedly connected to the circumferential outer wall of the bidirectional screw, the circumferential outer wall of the third worm gear is meshed with a third worm, the circumferential inner wall of the third worm is fixedly connected to an inner sleeve column, one side of the suture seat is fixedly connected to an L-shaped plate, the L-shaped plate is rotatably connected to the inner sleeve column, one end of the inner sleeve column is plugged with a storage tube, the circumferential outer wall of the inner sleeve column is fixedly connected to horizontal bars distributed in a circular shape at equal distances, the interior of the storage tube is provided with a matching groove that engages with the horizontal bar, one end of the storage tube is fixedly connected to a fifth helical gear, the circumferential outer wall of the fifth helical gear is meshed with two third helical gears, and the circumferential outer walls of the two third helical gears are meshed with a fourth The helical gear, the circumferential inner wall of the tube body is rotatably connected to the first rotating rod, the third helical gear is fixedly connected to the circumferential outer wall of the first rotating rod, the outer wall of one side of the fourth helical gear is fixedly connected to the second rotating rod, one end of the second rotating rod is fixedly connected to the sixth helical gear, the circumferential outer wall of the sixth helical gear is meshed with the first helical gear, the circumferential inner wall of the first helical gear is fixedly connected to the third rotating column, the third rotating column extends to one end of the circumferential outer wall of the tube body and is fixedly connected to the turning handle, the circumferential inner wall of the tube body is fixedly connected to the stabilizing plate, the second rotating column and the second rotating rod both pass through one side of the stabilizing plate, and the inner sleeve column passes through the inside of the rotating seat.

[0014] Preferably, the circumferential inner wall of the tube body is fixedly connected to a gear ring plate, the circumferential outer wall of the storage tube is sleeved with a sleeve, the circumferential outer wall of the sleeve is rotatably connected to a stabilizing gear disk, the stabilizing gear disk and the gear ring plate are engaged with each other, and one side of the gear ring plate is fixedly connected to a triangular plate to ensure stable rotation of the stabilizing gear disk.

[0015] Preferably, a partition is fixedly connected to the interior of the suturing head, and first springs distributed equidistantly are fixedly connected to an outer wall of one side of the partition, and a push plate for pushing the suturing staples is fixedly connected to one end of the first spring away from the partition.

[0016] Preferably, a motor is fixedly connected to the interior of the first shell, and a third rotating rod is fixedly connected to the output end of the motor, and the circumferential outer walls of the third rotating rod are respectively fixedly connected to the first gear sector and the second gear sector, and the first gear sector and the second gear sector are formed by dividing a spherical gear disk, and the circumferential outer wall of the second gear sector is meshed with the second driven gear, and the circumferential inner wall of the second driven gear is fixedly connected to the fourth rotating rod, and the circumferential outer wall of the fourth rotating rod is fixedly connected to the first worm, and the circumferential outer wall of the first worm is meshed with the first worm wheel.

[0017] Preferably, the stapling assembly includes a second threaded screw fixedly connected to the outer wall of the bottom of the first worm gear, the circumferential outer wall of the second threaded screw is threadedly connected to a second threaded sleeve, the interior of the suturing head is fixedly connected to a second shell, the number of the second shells is two, and the inner walls on both sides of the other second shell are fixedly connected to guide columns, the circumferential outer wall of the guide columns is sleeved with a guide block, and the outer walls of one side of the two second shells are provided with a through groove, and one side of the second threaded sleeve and the guide block are fixedly connected to a sliding column, and the end of the sliding column passing through the inside of the through groove is fixedly connected to a pressure roller.

[0018] Preferably, the pressing roller is located inside the pressing gap.

[0019] Preferably, the displacement assembly includes a first driven gear meshing with the first gear fan, the circumferential inner wall of the first driven gear is fixedly connected to a first threaded screw, the circumferential outer wall of the first threaded screw is threadedly connected to a first threaded sleeve, both sides of the first threaded sleeve are fixedly connected to a reinforcing rod, one end of the reinforcing rod is fixedly connected to a slider, the bottom outer wall of the slider is fixedly connected to a sliding rod, a limiting groove is provided on the top outer wall of the suturing head, the sliding rod is slidably connected to the limiting groove, and the bottom end of the sliding rod is fixedly connected to the top outer wall of the suturing seat.

[0020] Beneficial effects of the present invention:

[0021] The present invention provides a suturing device for the dura mater of the skull base. The device is provided with a rotating assembly. Medical personnel can drive the first rotating column by rotating the handle. The meshing transmission of the first gear plate and the second gear plate drives the second worm on the second rotating column to rotate, thereby driving the second worm wheel to link with the rotating seat, so that the suturing head can achieve ±90° angle adjustment around the rotating axis within the range of the U-shaped groove. At the same time, the multi-stage gear transmission system cooperates with the self-locking characteristics of the worm and worm wheel, which can not only accurately control the direction of the suturing head, but also lock the position at any angle, effectively solving the problem of limited field of view during deep skull base operations. The clamping assembly adopts an X-shaped cross structure of the first movable rod and the second movable rod. When the bidirectional screw rotates under the drive of the third worm wheel and the third worm, the two side frustum blocks move toward each other along the U-shaped rod, pushing the movable rod to open and drive the clamping block to clamp the dura mater. The buffer design of the second spring can automatically compensate for tissue deformation, avoiding vascular compression or tissue tearing caused by excessive clamping force, and is more flexible and adaptable than traditional tweezers.

[0022] The present invention provides a suturing device for the dura mater of the skull base, which realizes timed operation through a displacement component and a stapling component driven by a motor. When the motor is started, the first gear fan on the third rotating rod first engages with the first driven gear, driving the first threaded screw to rotate, so that the first threaded sleeve pushes the slider along the sliding rod through the reinforcing rod, thereby being able to move the suturing seat forward, applying a pre-stretching force to the area of ​​the dura mater to be sutured, forming a tension gap, thereby facilitating the precise penetration of the suture nail, and avoiding the situation where the dura mater cannot be effectively sutured. As the motor continues to rotate, until the first gear fan is separated from the driven gear, the second gear fan immediately engages with the second driven gear, driving the first worm on the fourth rotating rod to rotate, and driving the second threaded screw downward through the first worm gear, so that the second threaded sleeve and the guide block synchronously push the pressure roller, and the suture nail pushed to the compression gap by the first spring in the storage groove is pressed at a 90° vertical angle, thereby achieving fast and efficient suturing of the dura mater. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the suture head of the present invention.

[0026] Figure 3 This is a schematic diagram of the internal structure of the tube body of the present invention.

[0027] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0028] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0029] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at point C in the middle.

[0030] Figure 7 It is a schematic structural diagram of the suture seat of the present invention.

[0031] Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged structure at point D in the middle.

[0032] Figure 9For the present invention Figure 3 Schematic diagram of the enlarged structure at E in the middle.

[0033] Figure 10 It is a schematic diagram of the overall cross-sectional plan structure of the present invention.

[0034] Figure 11 For the present invention Figure 10 Schematic diagram of the enlarged structure at F in the middle.

[0035] Figure 12 For the present invention Figure 10 Schematic diagram of the enlarged structure at G in the middle.

[0036] Figure 13 It is a schematic diagram of the partial structure of the propping assembly of the present invention.

[0037] Figure 14 It is a schematic cross-sectional structural diagram of the second shell of the present invention.

[0038] In the picture:

[0039] 1. Tube; 2. Handle; 3. Turning handle; 4. Rotating block; 5. Suturing head; 6. U-shaped groove; 7. Suturing seat; 8. Rotating shaft; 9. First rotating column; 10. First gear plate; 11. Second gear plate; 12. Second rotating column; 13. Stabilizing plate; 14. First bevel gear; 15. Third rotating column; 16. Storage tube; 17. First shell; 18. Storage slot; 19. Suturing nail; 20. Clamping block; 21. Second shell; 22. First movable rod; 23. Second movable rod; 24. Gear ring plate; 25. Stabilizing gear plate; 26. Sleeve; 27. Triangular plate; 28. First rotating rod; 29. ​​Third bevel gear; 30. Second rotating rod; 31. Fourth bevel gear; 32. Fifth bevel gear; 33. Inner sleeve; 34. Horizontal bar; 35. Slider; 36. First Threaded screw; 37. Reinforcing rod; 38. First threaded sleeve; 39. Sliding rod; 40. L-shaped plate; 41. Cone block; 42. Partition; 43. First spring; 44. Motor; 45. First gear sector; 46. Third rotating rod; 47. Second gear sector; 48. First driven gear; 49. First worm; 50. Fourth rotating rod; 51. Second driven gear; 52. Push plate; 53. First worm gear; 54. Pressure roller; 55. Guide block; 56. Through groove; 57. Rotating seat; 58. Second worm gear; 59. Second worm; 60. Sixth bevel gear; 61. Compressing gap; 62. Third worm gear; 63. U-shaped rod; 64. Bidirectional screw; 65. Second spring; 66. Third worm; 67. Guide column; 68. Second threaded screw; 70. Second threaded sleeve. DETAILED DESCRIPTION

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0041] See also Figures 1-14 A suturing device for the dura mater at the base of the skull comprises a tube body 1 and a handle 2. A suturing head 5 is provided at one end of the tube body 1, a suturing seat 7 is provided inside the suturing head 5, and a clamping assembly for suturing is provided inside the suturing head 5.

[0042] The interior of the suturing head 5 is provided with a staple assembly for suturing the dura mater;

[0043] A driving assembly for providing a power source to the clamping assembly is provided inside the suturing seat 7, and a rotating assembly for adjusting the suturing angle of the suturing seat 7 is provided inside the tube body 1;

[0044] The upper and lower inner walls of the suturing head 5 are fixedly connected to storage grooves 18 distributed at equal distances. Suture staples 19 are arranged at equal distances inside the storage grooves 18. A compression gap 61 is formed between the ends of the two suture staples 19 to facilitate the subsequent pressing down of the staple assembly for suturing.

[0045] The top outer wall of the suturing head 5 is fixedly connected to the first shell 17, and the interior of the first shell 17 is provided with a displacement component for adjusting the position of the clamping component when clamping. The clamping component and stapling component integrated in the suturing head 5, as well as the driving component in the suturing seat 7 and the rotating component in the tube body 1 work together to solve the problems of the existing intranasal dura mater suturing technology from multiple angles. At the same time, the storage grooves 18 on the upper and lower inner walls of the suturing head 5 store the suture staples 19, and the formed compression gap 61 provides conditions for stapling, and the displacement component in the first shell 17 optimizes and assists the work of the clamping component.

[0046] Furthermore, the rotating assembly includes a first rotating column 9 rotatably connected to one end of the tube body 1, one end of the first rotating column 9 is fixedly connected to the rotating block 4, the other end of the first rotating column 9 is fixedly connected to the first gear plate 10, the circumferential outer wall of the first gear plate 10 is meshed with the second gear plate 11, the circumferential inner wall of the second gear plate 11 is fixedly connected to the second rotating column 12, the circumferential outer wall of the second rotating column 12 is connected to the second worm 59, the circumferential outer wall of the second worm 59 is meshed with the second worm wheel 58, and the circumferential inner wall of the tube body 1 is rotatably connected to the rotating shaft 8 The second worm gear 58 is fixedly connected to the circumferential outer wall of the rotating shaft 8, and a rotating seat 57 is fixedly connected to the outer wall of one side of the second worm gear 58. One end of the rotating seat 57 is fixedly connected to the outer wall of one side of the suture head 5. The circumferential outer wall of the tube body 1 is provided with a U-shaped groove 6 for facilitating the rotation of the suture head 5. By rotating the rotating block 4, the multi-stage gear transmission and the worm gear structure are used to enable medical staff to achieve ±90° precise angle adjustment of the suture head 5 within the range of the U-shaped groove 6 during surgery, and it can be locked at any angle, overcoming the problem of limited visual field during skull base surgery.

[0047] Furthermore, the clamping assembly includes a first movable rod 22 and a second movable rod 23 rotatably connected to the inner walls of both sides of the suturing seat 7. The first movable rod 22 and the second movable rod 23 are arranged in an X shape. One end of the first movable rod 22 and the second movable rod 23 are fixedly connected to the clamping block 20. One side outer wall of the first movable rod 22 is fixedly connected to the second spring 65. The other end of the second spring 65 is fixedly connected to the outer wall of one end of the second movable rod 23. The inner walls of both sides of the suturing seat 7 are rotatably connected to the bidirectional screw rod 64. Both ends of the bidirectional screw rod 64 are threadedly connected to the frustum block 41. The inner walls of both sides of the suturing seat 7 are fixedly connected to the U-shaped rod 63. A guide hole is provided inside the frustum block 41, and the U-shaped rod 63 passes through the inside of the guide hole. During the suturing process, the bidirectional screw rod 64 rotates under the action of the driving assembly, and the frustum block 41 drives the movable rod to open. The clamping block 20 stably clamps the dura mater, and the second spring 65 automatically compensates for tissue deformation to avoid excessive clamping force and damage to the tissue. It is more flexible and safer than traditional tweezers.

[0048] Furthermore, the driving assembly includes a third worm gear 62 fixedly connected to the circumferential outer wall of the bidirectional screw 64, the circumferential outer wall of the third worm gear 62 is meshed with a third worm 66, the circumferential inner wall of the third worm 66 is fixedly connected to the inner sleeve column 33, one side of the suture seat 7 is fixedly connected to an L-shaped plate 40, the L-shaped plate 40 is rotatably connected to the inner sleeve column 33, one end of the inner sleeve column 33 is plugged with a receiving tube 16, the circumferential outer wall of the inner sleeve column 33 is fixedly connected to the horizontal bars 34 distributed in a circular shape at equal distances, the interior of the receiving tube 16 is provided with a matching groove that engages with the horizontal bar 34, one end of the receiving tube 16 is fixedly connected to the fifth bevel gear 32, the circumferential outer wall of the fifth bevel gear 32 is meshed with two third bevel gears 29, the circumferential outer walls of the two third bevel gears 29 are meshed with the fourth bevel gear 31, the circumferential inner wall of the tube body 1 is rotatably connected to the first rotating rod 28, and the third bevel gear 29 is fixedly connected to the first rotating rod On the circumferential outer wall of 28, the outer wall of one side of the fourth bevel gear 31 is fixedly connected to the second rotating rod 30, and one end of the second rotating rod 30 is fixedly connected to the sixth bevel gear 60. The circumferential outer wall of the sixth bevel gear 60 is meshed with the first bevel gear 14, and the circumferential inner wall of the first bevel gear 14 is fixedly connected to the third rotating column 15. The third rotating column 15 extends to one end of the circumferential outer wall of the tube body 1 and is fixedly connected to the turning handle 3. The circumferential inner wall of the tube body 1 is fixedly connected to the stabilizing plate 13. The second rotating column 12 and the second rotating rod 30 both pass through one side of the stabilizing plate 13, and the inner sleeve column 33 passes through the inside of the rotating seat 57. When the turning handle 3 is rotated, the first bevel gear 14 on the third rotating column 15 drives a series of transmissions such as the sixth bevel gear 60, and finally the third worm 66 rotates, driving the third worm gear 62 to drive the bidirectional screw 64 to rotate, providing power for the clamping assembly to achieve stable clamping of the dura mater.

[0049] Furthermore, the circumferential inner wall of the tube body 1 is fixedly connected to a gear ring plate 24, the circumferential outer wall of the storage tube 16 is sleeved with a sleeve 26, and the circumferential outer wall of the sleeve 26 is rotatably connected to a stabilizing gear disc 25, the stabilizing gear disc 25 and the gear ring plate 24 are engaged with each other, and one side of the gear ring plate 24 is fixedly connected to a triangular plate 27 that ensures the stable rotation of the stabilizing gear disc 25. When the driving assembly is working, the storage tube 16 rotates, and the stabilizing gear disc 25 engages with the gear ring plate 24, so that the storage tube 16 rotates more smoothly, ensuring the stability of power transmission, and thus ensuring that the clamping assembly works reliably.

[0050] Furthermore, a partition 42 is fixedly connected to the interior of the suturing head 5, and a first spring 43 distributed at equal distances is fixedly connected to the outer wall of one side of the partition 42. The end of the first spring 43 away from the partition 42 is fixedly connected to a push plate 52 for pushing the suture staples 19. During the operation on the patient by the medical staff, the push plate 52 is always pushed by the first spring 43 to continuously push the suture staples 19 in the storage slot 18 to the compression gap 61, preparing for the staple assembly to press down for suturing, thereby ensuring that the suturing process is continuous and efficient.

[0051] Furthermore, the interior of the first shell 17 is fixedly connected to a motor 44, and the output end of the motor 44 is fixedly connected to a third rotating rod 46. The circumferential outer walls of the third rotating rod 46 are respectively fixedly connected to the first gear fan 45 and the second gear fan 47. The first gear fan 45 and the second gear fan 47 are formed by dividing a circular gear disk. The circumferential outer wall of the second gear fan 47 is engaged with the second driven gear 51. The circumferential inner wall of the second driven gear 51 is fixedly connected to the fourth rotating rod 50. The circumferential outer wall of the fourth rotating rod 50 is fixedly connected to the first worm 49. The circumferential outer wall of the first worm 49 is engaged with the first worm gear 53. When the motor 44 is started, the third rotating rod 46 rotates, and the first gear fan 45 and the second gear fan 47 are successively engaged with the driven gear, controlling the displacement assembly and the stapling assembly to work successively, thereby realizing the orderly pre-stretching and suturing of the dura mater.

[0052] Furthermore, the stapling assembly includes a second threaded screw 68 fixedly connected to the outer wall of the bottom of the first worm gear 53, and the circumferential outer wall of the second threaded screw 68 is threadedly connected to the second threaded sleeve 70. The interior of the suture head 5 is fixedly connected to the second shell 21. The number of the second shells 21 is two. The inner walls on both sides of the other second shell 21 are fixedly connected to guide columns 67, and the circumferential outer wall of the guide columns 67 is sleeved with a guide block 55. One side outer wall of the two second shells 21 is provided with a through groove 56. The second threaded sleeve 70 and one side of the guide block 55 are fixedly connected to a sliding column, and the end of the sliding column passing through the inside of the through groove 56 is fixedly connected to the pressure roller 54. Driven by the motor 44, the second gear fan 47 drives the first worm gear 53 to rotate, and the second threaded screw 68 rotates to move the second threaded sleeve 70 downward, and the pressure roller 54 presses the suture nail 19 in the compression gap 61 vertically on the dura mater to complete efficient suturing.

[0053] Furthermore, the pressing roller 54 is located inside the pressing gap 61, ensuring that the suture staples 19 can be accurately pressed down from the storage slot 18 through the dura mater, thereby ensuring the accuracy and effectiveness of the suturing operation.

[0054] Furthermore, the displacement assembly includes a first driven gear 48 that is meshed with the first gear fan 45. The circumferential inner wall of the first driven gear 48 is fixedly connected to the first threaded screw 36, and the circumferential outer wall of the first threaded screw 36 is threadedly connected to the first threaded sleeve 38. Both sides of the first threaded sleeve 38 are fixedly connected to a reinforcing rod 37, one end of the reinforcing rod 37 is fixedly connected to the slider 35, and the bottom outer wall of the slider 35 is fixedly connected to the slide rod 39. A limiting groove is provided on the top outer wall of the suture head 5, and the slide rod 39 is slidably connected to the limiting groove. The bottom end of the slide rod 39 is fixedly connected to the top outer wall of the suture seat 7. After the motor 44 is started, the first gear fan 45 first meshes with the first driven gear 48, so that the suture seat 7 moves forward, applies a pre-stretching force to the dura mater, and forms a tension gap, which facilitates the subsequent precise penetration of the suture nail 19 and improves the suture quality.

[0055] In summary, with the help of the above technical solution of the present invention, when in use, the medical staff inserts the device through the nasal cavity, reaches the dura mater to be sutured under the guidance of the nasal endoscope, drives the rotating assembly by turning the handle 3, and utilizes the meshing transmission of the first rotating column 9, the first gear plate 10 and the second gear plate 11 to drive the second worm 59 on the second rotating column 12 to rotate, thereby driving the second worm wheel 58 and the rotating seat 57 to rotate, so that the suture head 5 is adjusted to a suitable angle around the rotating shaft 8 within the range of the U-shaped groove 6. This design achieves precise angle adjustment through multi-stage gear transmission, and the self-locking characteristics of the worm gear can ensure stable position and adapt to the complex anatomical structure of the skull base;

[0056] Then, turning the handle 3 drives the first bevel gear 14 on the third rotating column 15 to mesh with the sixth bevel gear 60, which is transmitted to the fifth bevel gear 32 through the second rotating rod 30, the fourth bevel gear 31, and the third bevel gear 29, driving the receiving tube 16 and the inner sleeve column 33 to rotate, so that the third worm 66 drives the third worm gear 62 to rotate, and then the bidirectional screw rod 64 rotates, and the frustum blocks 41 on both sides move toward each other along the U-shaped rod 63, pushing the first movable rod 22 and the second movable rod 23 arranged in the X shape to open, driving the clamping block 20 to clamp the two sides of the dura mater, and the second spring 65 can buffer the clamping force to avoid excessive squeezing of the tissue and ensure the stability of the tissue during suturing. Then start the motor 44, and the first gear fan 45 on the third rotating rod 46 meshes with the first driven gear 48, so that the first threaded screw rod 36 rotates, and the first threaded sleeve 38 drives the slider 35 and the slide rod 39 to slide through the reinforcing rod 37, pushing the suturing seat 7 to move, The meninges to be sutured are appropriately stretched to facilitate the precise penetration of the suture nail 19 through the tissue. When the first gear sector 45 is separated from the first driven gear 48, the second gear sector 47 engages the second driven gear 51, driving the first worm 49 on the fourth rotating rod 50 to rotate, driving the first worm gear 53 and the second threaded screw 68 to rotate, and the second threaded sleeve 70 moves downward along the guide column 67, and pushes the pressure roller 54 to slide in the through groove 56 through the sliding column, pressing the suture nail 19 pushed to the compression gap 61 in the storage groove 18 by the first spring 43 and the push plate 52, so that it passes through the dura mater and is fixed. In this way, the orderly linkage of various components can realize the flexible adjustment of the suture angle, the stable clamping and pre-stretching of the tissue, and the automatic pushing and pressing of the suture nail 19, which effectively improves the operational convenience and safety of the skull base dura mater suturing, reduces the risk of tissue damage during surgery, and ensures the accuracy and efficiency of the suturing process.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A suturing device for the dura mater of the skull base, comprising a tube body (1) and a handle (2), characterized in that: A suturing head (5) is provided at one end of the tube body (1), a suturing seat (7) is provided inside the suturing head (5), and a clamping assembly for facilitating suturing is provided inside the suturing head (5); The suturing head (5) is provided with a staple assembly for suturing the dura mater inside; A driving assembly for providing a power source to the clamping assembly is provided inside the suturing seat (7), and a rotating assembly for adjusting the suturing angle of the suturing seat (7) is provided inside the tube body (1); The upper and lower inner walls of the suturing head (5) are fixedly connected to storage grooves (18) distributed at equal distances, and the suturing staples (19) in the same storage groove (18) are stored in the storage groove (18) at equal distances, and a compression gap (61) is formed between the ends of the two suturing staples (19) in the same storage groove (18) to facilitate the subsequent pressing down of the staple assembly for suturing; The top outer wall of the suturing head (5) is fixedly connected to a first shell (17), and a displacement assembly for adjusting the position of the clamping assembly when clamping is provided inside the first shell (17). The clamping assembly includes a first movable rod (22) and a second movable rod (23) rotatably connected to the inner walls on both sides of the suturing seat (7). The first movable rod (22) and the second movable rod (23) are arranged in an X shape. One end of the first movable rod (22) and the second movable rod (23) are fixedly connected to a clamping block (20). The first movable rod (22) and the second movable rod (23) are fixedly connected to one end of each of the first movable rod (22) and the second movable rod (23). A second spring (65) is fixedly connected to an outer wall of one side of the movable rod (22), and the other end of the second spring (65) is fixedly connected to an outer wall of one end of the second movable rod (23). The inner walls on both sides of the suturing seat (7) are rotatably connected to a bidirectional screw rod (64), and both ends of the bidirectional screw rod (64) are threadedly connected to a truncated cone block (41). The inner walls on both sides of the suturing seat (7) are fixedly connected to a U-shaped rod (63), and a guide hole is opened inside the truncated cone block (41), and the U-shaped rod (63) passes through the inside of the guide hole.

2. The suture device for the skull base dura mater according to claim 1, characterized in that: The rotating assembly comprises a first rotating column (9) rotatably connected to one end of the tube body (1), one end of the first rotating column (9) is fixedly connected to a rotating block (4), the other end of the first rotating column (9) is fixedly connected to a first gear plate (10), the circumferential outer wall of the first gear plate (10) is meshed with a second gear plate (11), the circumferential inner wall of the second gear plate (11) is fixedly connected to a second rotating column (12), and the circumferential outer wall of the second rotating column (12) is connected to a second worm (59), The circumferential outer wall of the second worm (59) is meshed with a second worm wheel (58), the circumferential inner wall of the tube body (1) is rotatably connected to a rotating shaft (8), the second worm wheel (58) is fixedly connected to the circumferential outer wall of the rotating shaft (8), one side outer wall of the second worm wheel (58) is fixedly connected to a rotating seat (57), one end of the rotating seat (57) is fixedly connected to the one side outer wall of the suturing head (5), and the circumferential outer wall of the tube body (1) is provided with a U-shaped groove (6) for facilitating the rotation of the suturing head (5).

3. The suture device for the skull base dura mater according to claim 2, characterized in that: The driving assembly includes a third worm gear (62) fixedly connected to the outer circumferential wall of the bidirectional screw (64), the outer circumferential wall of the third worm gear (62) is meshed with a third worm (66), the inner circumferential wall of the third worm (66) is fixedly connected to an inner sleeve column (33), one side of the suture seat (7) is fixedly connected to an L-shaped plate (40), the L-shaped plate (40) is rotatably connected to the inner sleeve column (33), and one end of the inner sleeve column (33) is plugged with a receiving The outer circumference of the inner sleeve column (33) is fixedly connected to horizontal bars (34) distributed in a circular shape at equal distances. A matching groove engaging with the horizontal bars (34) is provided inside the receiving tube (16). One end of the receiving tube (16) is fixedly connected to a fifth helical gear (32). The outer circumference of the fifth helical gear (32) is meshed with two third helical gears (29). The outer circumference of the two third helical gears (29) is meshed with a fourth helical gear (3 1), the circumferential inner wall of the tube body (1) is rotatably connected to the first rotating rod (28), the third bevel gear (29) is fixedly connected to the circumferential outer wall of the first rotating rod (28), the outer wall of one side of the fourth bevel gear (31) is fixedly connected to the second rotating rod (30), one end of the second rotating rod (30) is fixedly connected to the sixth bevel gear (60), the circumferential outer wall of the sixth bevel gear (60) is meshed with the first bevel gear (14), the circumferential inner wall of the first bevel gear (14) is fixedly connected to the third rotating column (15), the third rotating column (15) extends to one end of the circumferential outer wall of the tube body (1) and is fixedly connected to the turning handle (3), the circumferential inner wall of the tube body (1) is fixedly connected to the stabilizing plate (13), the second rotating column (12) and the second rotating rod (30) both pass through one side of the stabilizing plate (13), and the inner sleeve column (33) passes through the inside of the rotating seat (57).

4. The suture device for the skull base dura mater according to claim 3, characterized in that: The circumferential inner wall of the tube body (1) is fixedly connected to a toothed ring plate (24), the circumferential outer wall of the storage tube (16) is sleeved with a sleeve (26), the circumferential outer wall of the sleeve (26) is rotatably connected to a stabilizing toothed disc (25), the stabilizing toothed disc (25) and the toothed ring plate (24) are meshed with each other, and one side of the toothed ring plate (24) is fixedly connected to a triangular plate (27) for ensuring stable rotation of the stabilizing toothed disc (25).

5. The suture device for the skull base dura mater according to claim 4, characterized in that: A partition (42) is fixedly connected to the interior of the suturing head (5), and first springs (43) distributed at equal distances are fixedly connected to an outer wall of one side of the partition (42), and a push plate (52) for pushing the suturing nail (19) is fixedly connected to one end of the first spring (43) away from the partition (42).

6. The skull base dura mater suture device according to claim 5, characterized in that: The interior of the first housing (17) is fixedly connected to a motor (44), the output end of the motor (44) is fixedly connected to a third rotating rod (46), the circumferential outer wall of the third rotating rod (46) is respectively fixedly connected to a first gear fan (45) and a second gear fan (47), the first gear fan (45) and the second gear fan (47) are formed by dividing a circular gear disk, the circumferential outer wall of the second gear fan (47) is meshed with a second driven gear (51), the circumferential inner wall of the second driven gear (51) is fixedly connected to a fourth rotating rod (50), the circumferential outer wall of the fourth rotating rod (50) is fixedly connected to a first worm (49), and the circumferential outer wall of the first worm (49) is meshed with a first worm wheel (53).

7. The suture device for the skull base dura mater according to claim 6, characterized in that: The stapling assembly includes a second threaded screw (68) fixedly connected to the outer wall of the bottom of the first worm gear (53), the circumferential outer wall of the second threaded screw (68) is threadedly connected to a second threaded sleeve (70), the interior of the suturing head (5) is fixedly connected to a second shell (21), the number of the second shells (21) is two, the inner walls of both sides of the other second shell (21) are fixedly connected to guide columns (67), the circumferential outer wall of the guide column (67) is sleeved with a guide block (55), one side outer wall of the two second shells (21) is provided with a through groove (56), the second threaded sleeve (70) and one side of the guide block (55) are fixedly connected to a sliding column, and the end of the sliding column passing through the inside of the through groove (56) is fixedly connected to a pressure roller (54).

8. The suture device for the skull base dura mater according to claim 7, characterized in that: The pressing roller (54) is located inside the pressing gap (61).

9. The suture device for the skull base dura mater according to claim 8, characterized in that: The displacement assembly includes a first driven gear (48) meshing with the first gear fan (45), the circumferential inner wall of the first driven gear (48) is fixedly connected to a first threaded screw (36), the circumferential outer wall of the first threaded screw (36) is threadedly connected to a first threaded sleeve (38), both sides of the first threaded sleeve (38) are fixedly connected to a reinforcing rod (37), one end of the reinforcing rod (37) is fixedly connected to a slider (35), the bottom outer wall of the slider (35) is fixedly connected to a slide rod (39), a limiting groove is provided on the top outer wall of the suturing head (5), the slide rod (39) is slidably connected to the limiting groove, and the bottom end of the slide rod (39) is fixedly connected to the top outer wall of the suturing seat (7).

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