Continuous dural suturing device

By designing a continuous dura mater suturing device, which utilizes a motor and pneumatic grippers to automate dura mater suturing, the problem of low suturing efficiency in existing technologies is solved, achieving rapid, continuous, and stable suturing results and improving surgical quality.

WO2026090961A1PCT designated stage Publication Date: 2026-05-07GUANGZHOU INSTITUTE OF CANCER RESEARCH THE AFFILIATED CANCER HOSPITAL GUANGZHOU MEDICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
GUANGZHOU INSTITUTE OF CANCER RESEARCH THE AFFILIATED CANCER HOSPITAL GUANGZHOU MEDICAL UNIVERSITY
Filing Date
2024-10-31
Publication Date
2026-05-07

AI Technical Summary

Technical Problem

Existing technologies for dura mater suturing are inefficient, and manual handling of the suture device leads to large suturing errors, making it difficult to achieve fast, continuous, and stable suturing.

Method used

A continuous dura mater suturing device was designed, including an arc-shaped guide rail, a suturing assembly, an adjustment assembly, and a clamping assembly. The device utilizes a motor and pneumatic grippers to achieve automated suturing of the dura mater. The movement and angle of the suturing assembly are controlled by the arc-shaped guide rail and the adjustment assembly, and a fast and continuous suturing operation is performed in conjunction with an electric suture device.

Benefits of technology

This method enables rapid, continuous, and stable suturing of the dura mater, improving suturing efficiency, reducing suturing errors, and enhancing surgical quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

A continuous dural suturing device, which relates to the technical field of medical instruments. The continuous dural suturing device comprises an arc-shaped guide rail (1), wherein a suturing assembly is fixedly connected to a moving end of the arc-shaped guide rail (1); two ends of the arc-shaped guide rail (1) are each provided with an adjustment assembly for adjusting the angle of rotation of the arc-shaped guide rail (1); a clamping assembly for mounting on an operating table is provided below each adjustment assembly; the suturing assembly comprises a movable plate (4) fixedly connected to the moving end of the arc-shaped guide rail (1) by means of a control portion; the control portion is configured to control the lifting and the angle of rotation of the movable plate (4); a suturing portion for suturing the dura mater is provided at the end of the movable plate (4) facing away from the control portion; grasping portions for clamping the dura mater are respectively provided on two sides of the suturing portion; and the grasping portions are fixedly connected to the movable plate (4). The suturing device can effectively replace manually operation of moving the suturing portion, and enable rapid, continuous and stable suturing of the dura mater, thereby effectively improving the suturing efficiency.
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Description

A continuous dura mater suture device Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a continuous dura mater suturing device. Background Technology

[0002] The dura mater is a tough membranous structure that covers the outermost layer of brain tissue, providing basic mechanical protection. Its integrity can prevent cerebrospinal fluid leakage and reduce the occurrence of intracranial infections, epilepsy, and other conditions. For neurosurgery, dural incision is an essential route to access the intracranial cavity. Therefore, the dura mater must be meticulously sutured and repaired at the end of the surgery to prevent postoperative complications such as cerebrospinal fluid leakage, subcutaneous effusion, intracranial infection, and epilepsy.

[0003] In dural suturing, most procedures are performed manually, which is inefficient. Currently, although electric dural suture machines can replace manual suturing, the machine still needs to be held manually. Prolonged holding can cause vibrations and lead to suturing errors, further reducing efficiency. Therefore, there is an urgent need for a continuous dural suturing device that can effectively replace manual movement of the suturing equipment and perform rapid, continuous, and stable dural suturing, thereby improving efficiency.

[0004] Summary of the Invention

[0005] The purpose of this invention is to provide a continuous dura mater suturing device to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: a continuous dura mater suturing device, comprising an arc-shaped guide rail, a suturing assembly fixedly connected to the moving end of the arc-shaped guide rail, and adjustment assemblies for adjusting the rotation angle of the arc-shaped guide rail respectively provided at both ends of the arc-shaped guide rail, and a clamping assembly for mounting on an operating table provided below the adjustment assemblies; the suturing assembly includes a movable plate, the movable plate being fixedly connected to the moving end of the arc-shaped guide rail via a control unit, the control unit being used to control the lifting and lowering and rotation angle of the movable plate, a suturing part for suturing the dura mater being provided at one end of the movable plate opposite to the control unit, and grasping parts for clamping the dura mater being provided on both sides of the suturing part, the grasping parts being fixedly connected to the movable plate.

[0007] Preferably, the control unit includes a fixed end of a first electric telescopic rod that is fixedly connected to the moving end of the arc-shaped guide rail, and a second motor is fixedly connected to the telescopic end of the first electric telescopic rod. The output shaft of the second motor is fixedly connected to the center of the movable plate.

[0008] Preferably, the suture part includes a second slide groove formed on the movable plate, a lead screw is rotatably connected in the second slide groove, a second slider is threadedly connected to the lead screw, the second slider is slidably connected to the second slide groove, a fixed end of a third electric telescopic rod is fixedly connected to one end of the second slider extending out of the second slide groove, and an electric suturer is fixedly connected to the telescopic end of the third electric telescopic rod.

[0009] Preferably, a third motor is connected to one end of the lead screw extending out of the movable plate, and the third motor is fixedly connected to the side wall of the movable plate.

[0010] Preferably, the gripping part includes a fixed end of a second electric telescopic rod that is fixedly connected to the movable plate. Two second electric telescopic rods are symmetrically arranged on both sides outside the second slide groove, and pneumatic grippers are fixedly connected to the telescopic ends of the second electric telescopic rods.

[0011] Preferably, the adjustment assembly includes a rotating plate fixedly connected to the end of the arc-shaped guide rail, and connecting plates are rotatably connected to the opposite ends of the two rotating plates via rotating shafts. A first motor is fixedly connected to the side of the connecting plate opposite to the rotating plate, and the output shaft of the first motor is drively connected to the rotating shaft.

[0012] Preferably, the clamping assembly includes a U-shaped groove, the end of the horizontal plate at the upper part of the U-shaped groove is connected to the connecting plate, and a lifting plate is slidably connected inside the U-shaped groove.

[0013] Preferably, one end of each of the two U-shaped groove openings is positioned opposite to the other.

[0014] Preferably, one end of the lifting plate is fixedly connected to a first slider, the first slider is slidably connected to a first groove, the first groove is formed on the vertical plate in the middle of the U-shaped groove, and the two first grooves are arranged opposite to each other.

[0015] Preferably, a bolt is threaded onto the horizontal plate at the lower part of the U-shaped groove, and one end of the bolt extending into the U-shaped groove abuts against the lifting plate.

[0016] The present invention discloses the following technical effects:

[0017] This invention mounts two clamping components on an operating table. The rotation angle of the arc-shaped guide rail is controlled by adjusting these components, and the suture assembly is moved via the arc-shaped guide rail to position the suture section above the area to be sutured. The control unit then adjusts the rotation of a movable plate, positioning the suture section, the grasping section, and the area to be sutured in relative positions. The control unit lowers the movable plate, causing the two grasping sections to grasp the area to be sutured, and the suture section then performs the suturing between the two grasping sections. This invention effectively replaces manual movement of the suture section, enabling rapid, continuous, and stable dura mater suturing, significantly improving suturing efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the stitching assembly structure of the present invention;

[0021] Figure 3 is a schematic diagram of the movable plate structure of the present invention from a bottom view;

[0022] Figure 4 is a schematic cross-sectional view of the U-shaped groove structure of the present invention;

[0023] Figure 5 is a schematic diagram of the lifting plate structure of the present invention;

[0024] The components include: 1. Arc-shaped guide rail; 2. Connecting plate; 3. U-shaped groove; 4. Movable plate; 5. Pneumatic gripper; 6. Electric sewing machine; 11. First electric telescopic rod; 12. Rotating plate; 21. First motor; 31. Lifting plate; 32. First slider; 33. First slide groove; 34. Bolt; 41. Second motor; 42. Third motor; 43. Lead screw; 44. Second slider; 45. Second electric telescopic rod; 46. Third electric telescopic rod; 47. Second slide groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Referring to Figures 1-5, the present invention provides a continuous dura mater suturing device, including an arc-shaped guide rail 1. A suturing assembly is fixedly connected to the moving end of the arc-shaped guide rail 1. Adjustment assemblies for adjusting the rotation angle of the arc-shaped guide rail 1 are respectively provided at both ends of the arc-shaped guide rail 1. A clamping assembly for mounting on an operating table is provided below the adjustment assembly. The suturing assembly includes a movable plate 4. The movable plate 4 is fixedly connected to the moving end of the arc-shaped guide rail 1 through a control unit. The control unit is used to control the lifting and lowering and rotation angle of the movable plate 4. A suturing part for suturing the dura mater is provided at one end of the movable plate 4 away from the control unit. Grasping parts for clamping the dura mater are respectively provided on both sides of the suturing part. The grasping parts are fixedly connected to the movable plate 4.

[0028] This invention mounts two clamping components on an operating table. The rotation angle of the arc-shaped guide rail 1 is controlled by adjusting these components, and the suture assembly is moved via the arc-shaped guide rail 1 to position the suture section above the area to be sutured. The control unit then adjusts the rotation of the movable plate 4, positioning the suture section, the grasping section, and the area to be sutured in relative positions. The control unit lowers the movable plate 4, allowing the two grasping sections to grasp the area to be sutured, and the suture section can then suture between the two grasping sections. This invention effectively replaces manual movement of the suture section and enables rapid, continuous, and stable dura mater sutures, significantly improving suture efficiency.

[0029] A further optimized design includes a control unit comprising a fixed end of a first electrically telescopic rod 11 fixedly connected to the moving end of the arc-shaped guide rail 1. A second motor 41 is fixedly connected to the telescopic end of the first electrically telescopic rod 11, and the output shaft of the second motor 41 is fixedly connected to the center of the movable plate 4. The movable plate 4 is raised and lowered by the telescopic end of the first electrically telescopic rod 11, and then the second motor 41 drives the movable plate 4 to rotate, adjusting the rotation angle of the movable plate 4 to position it in the desired location.

[0030] A further optimized design includes a suture section comprising a second groove 47 formed on a movable plate 4. A lead screw 43 is rotatably connected within the second groove 47, and a second slider 44 is threadedly connected to the lead screw 43. The second slider 44 is slidably connected to the second groove 47. One end of the second slider 44 extending out of the second groove 47 is fixedly connected to the fixed end of a third electric telescopic rod 46, and the telescopic end of the third electric telescopic rod 46 is fixedly connected to an electric suturer 6. The lead screw 43 drives the second slider 44 to move along the second groove 47, the second slider 44 drives the third electric telescopic rod 46 to move, and the third electric telescopic rod 46 drives the electric suturer 6 to move.

[0031] In a further optimized design, a third motor 42 is connected to one end of the lead screw 43 extending beyond the movable plate 4. The third motor 42 is fixedly connected to the side wall of the movable plate 4. The third motor 42 drives the lead screw 43 to rotate.

[0032] The design is further optimized so that the gripping unit includes a fixed end of a second electrically telescopic rod 45 fixedly connected to the movable plate 4. Two second electrically telescopic rods 45 are symmetrically arranged on both sides outside the second slide groove 47. The telescopic ends of the second electrically telescopic rods 45 are fixedly connected to pneumatic grippers 5. The second electrically telescopic rods 45 drive the pneumatic grippers 5 to approach the area of ​​the dura mater that needs to be sutured, so that the pneumatic grippers 5 can grasp the area of ​​the dura mater that needs to be sutured, facilitating the electric suturer 6 to suture the dura mater between the two pneumatic grippers 5.

[0033] The electric stitcher 6 is reset to a position close to either of the pneumatic grippers 5, allowing the electric stitcher 6 to move from one pneumatic gripper 5 to another and perform stitching.

[0034] A further optimized solution includes an adjustment component comprising a rotating plate 12 fixedly connected to the end of the arc-shaped guide rail 1. Two rotating plates 12, each with its opposite ends, are rotatably connected to a connecting plate 2 via a rotating shaft. A first motor 21 is fixedly connected to the side of the connecting plate 2 opposite to the rotating plate 12, and the output shaft of the first motor 21 is connected to the rotating shaft for transmission. The first motor 21 drives the rotating shaft to rotate, which in turn drives the rotating plates 12 to rotate. The two rotating plates 12 stably drive the arc-shaped guide rail 1 to rotate, and the two first motors 21 drive the arc-shaped guide rail 1 to rotate, ensuring that the arc-shaped guide rail 1 is positioned as required.

[0035] A further optimized design includes a clamping assembly comprising a U-shaped groove 3, with the end of the upper horizontal plate of the U-shaped groove 3 connected to a connecting plate 2, and a lifting plate 31 slidably connected within the U-shaped groove 3. The connecting plate 2 is flush with the end of the upper horizontal plate of the U-shaped groove 3, allowing the rotating plate 12 to rotate effectively.

[0036] The design has been further optimized, with the two U-shaped grooves having their openings positioned opposite each other at one end. This facilitates installation onto the operating table.

[0037] In a further optimized design, a first slider 32 is fixedly connected to one end of the lifting plate 31. The first slider 32 is slidably connected to a first slide groove 33, which is formed on the vertical plate in the middle of the U-shaped groove 3. The two first slide grooves 33 are arranged opposite to each other. By moving the first slider 32 along the first slide groove 33, the lifting plate 31 can be raised and lowered stably.

[0038] In a further optimized design, a bolt 34 is threaded onto the lower horizontal plate of the U-shaped groove 3. One end of the bolt 34 extends into the U-shaped groove 3 and abuts against the lifting plate 31. By rotating the bolt 34, the lifting plate 31 can be moved stably up and down within the U-shaped groove 3. When the operating table is positioned between the lifting plate 31 and the upper horizontal plate of the U-shaped groove 3, rotating the bolt 34 ensures that the lifting plate 31, the upper horizontal plate of the U-shaped groove 3, and the operating table are tightly abutted, allowing the U-shaped groove 3 to be stably installed on the operating table.

[0039] Working process: When suturing the dura mater is required, rotate bolt 34 to separate the lifting plate 31 from the upper horizontal plate of the U-shaped groove 3. Then, insert both sides of the operating table between the lifting plate 31 and the upper horizontal plate of the U-shaped groove 3, and position the connecting plate 2 on both sides of the patient's brain. Then, rotate bolt 34 to ensure that the lifting plate 31, the upper horizontal plate of the U-shaped groove 3, and the operating table are tightly abutted, allowing the U-shaped groove 3 to be stably installed on the operating table. Then, according to the required suturing position, the two first motors 21 drive the arc-shaped guide rail 1 to rotate, positioning it in the required position. Simultaneously, the second motor 41 drives the movable plate 4 to rotate, adjusting the rotation angle of the movable plate 4 to position the suturing part, the grasping part, and the area to be sutured relative to each other. Finally, the movable plate 4 is raised and lowered by the telescopic end of the first electric telescopic rod 11. The pneumatic gripper 5 and the electric suture device 6 are brought close to the area to be sutured. Then, the second electric telescopic rod 45 drives the pneumatic gripper 5 to move closer to the area of ​​the dura mater to be sutured, allowing the pneumatic gripper 5 to grasp the area of ​​the dura mater to be sutured. Then, the telescopic end of the third electric telescopic rod 46 extends, so that the area of ​​the dura mater to be sutured is inside the electric suture device 6. Then, the third motor 42 drives the lead screw 43 to rotate, and the lead screw 43 drives the second slider 44 to move along the second slide groove 47. The second slider 44 drives the third electric telescopic rod 46 to move, and the third electric telescopic rod 46 drives the electric suture device 6 to move, so that the electric suture device 6 sutures the dura mater between the two pneumatic grippers 5. After the suture is completed, the telescopic ends of the first electric telescopic rod 11, the second electric telescopic rod 45, and the third electric telescopic rod 46 are retracted, thus completing the suture work.

[0040] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0041] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A continuous dura mater suturing device, characterized in that: The system includes an arc-shaped guide rail (1), with a suture assembly fixedly connected to the moving end of the arc-shaped guide rail (1). Adjustment assemblies for adjusting the rotation angle of the arc-shaped guide rail (1) are respectively provided at both ends of the arc-shaped guide rail (1), and a clamping assembly for mounting on the operating table is provided below the adjustment assembly. The suturing assembly includes a movable plate (4), which is fixedly connected to the moving end of the arc-shaped guide rail (1) via a control unit. The control unit is used to control the lifting and rotating angle of the movable plate (4). A suturing part for suturing the dura mater is provided at one end of the movable plate (4) away from the control unit. Grasping parts for clamping the dura mater are provided on both sides of the suturing part. The grasping parts are fixedly connected to the movable plate (4).

2. The continuous dura mater suturing device according to claim 1, characterized in that: The control unit includes a fixed end of a first electric telescopic rod (11) that is fixedly connected to the moving end of the arc-shaped guide rail (1). A second motor (41) is fixedly connected to the telescopic end of the first electric telescopic rod (11). The output shaft of the second motor (41) is fixedly connected to the center of the movable plate (4).

3. The continuous dura mater suturing device according to claim 1, characterized in that: The suture section includes a second slide groove (47) formed on the movable plate (4). A lead screw (43) is rotatably connected in the second slide groove (47). The lead screw (43) is threadedly connected to a second slider (44). The second slider (44) is slidably connected to the second slide groove (47). The end of the second slider (44) extending out of the second slide groove (47) is fixedly connected to the fixed end of a third electric telescopic rod (46). The telescopic end of the third electric telescopic rod (46) is fixedly connected to an electric suturer (6).

4. The continuous dura mater suturing device according to claim 3, characterized in that: The end of the lead screw (43) extending out of the movable plate (4) is connected to a third motor (42), and the third motor (42) is fixedly connected to the side wall of the movable plate (4).

5. The continuous dura mater suturing device according to claim 3, characterized in that: The gripping part includes a fixed end of a second electric telescopic rod (45) fixedly connected to the movable plate (4). Two second electric telescopic rods (45) are symmetrically arranged on both sides outside the second slide groove (47). The telescopic ends of the second electric telescopic rods (45) are fixedly connected to pneumatic grippers (5).

6. The continuous dura mater suturing device according to claim 1, characterized in that: The adjustment assembly includes a rotating plate (12) fixedly connected to the end of the arc-shaped guide rail (1). The two rotating plates (12) are respectively connected to a connecting plate (2) through a rotating shaft at their opposite ends. A first motor (21) is fixedly connected to the side of the connecting plate (2) opposite to the rotating plate (12). The output shaft of the first motor (21) is connected to the rotating shaft for transmission.

7. The continuous dura mater suturing device according to claim 6, characterized in that: The clamping assembly includes a U-shaped groove (3), the end of the horizontal plate at the upper part of the U-shaped groove (3) is connected to the connecting plate (2), and a lifting plate (31) is slidably connected inside the U-shaped groove (3).

8. The continuous dura mater suturing device according to claim 7, characterized in that: The two U-shaped grooves (3) are positioned opposite each other at one end of their openings.

9. The continuous dura mater suturing device according to claim 7, characterized in that: One end of the lifting plate (31) is fixedly connected to a first slider (32), the first slider (32) is slidably connected to a first groove (33), the first groove (33) is opened on the vertical plate in the middle of the U-shaped groove (3), and the two first grooves (33) are arranged opposite to each other.

10. The continuous dura mater suturing device according to claim 9, characterized in that: A bolt (34) is threaded onto the horizontal plate at the bottom of the U-shaped groove (3), and one end of the bolt (34) extends into the U-shaped groove (3) and abuts against the lifting plate (31).

Citation Information

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