Dura mater incision device for neurosurgery

Abstract

A dura mater incision device for neurosurgery, wherein a rotating column (2) is provided on a movable cabinet mechanism by means of a rotary damper (1); the upper end of the rotating column (2) is provided with a connecting rocker arm (4) by means of a mounting base (3); an end portion of the connecting rocker arm (4) is provided with a connecting mechanism; the front end of a handpiece (5) is provided with a guard plate (7) by means of a hinged connecting base (6); a movable carriage (9) is provided above the guard plate (7) by means of a movable guide groove (8); the lower side of the movable carriage (9) is provided with a dural knife (10) by means of an adjusting base mechanism; and a driving mechanism is provided between the handpiece (5) and the movable carriage (9). By rotatably arranging the connecting rocker arm (4), movable support can be provided for an incision knife mechanism. This design requires only manual gripping for directional adjustment and movement, without the need to fully hand-hold the incision knife mechanism during operation, thereby relieving the surgeon from the gravitational load of the incision knife mechanism, increasing the precision of surgical manipulation. The dural knife is driven by the driving mechanism to move back and forth to simulate the action of manual cutting, and the cutting depth of the dural knife can also be controlled, thereby further increasing the precision of dural incision, allowing for more effortless and convenient cutting.

Description

A dural incision device for neurosurgery Technical Field

[0001] This invention relates to the field of equipment technology, and in particular to a dura mater cutting device for neurosurgery. Background Technology

[0002] The dura mater is located between the skull and the brain tissue, surrounding the entire surface of the brain tissue. It is a thick and tough double-layered membrane. The outer layer of the dura mater is the periosteum on the inner surface of the skull, while the inner layer is thicker and tougher than the outer layer. It continues to connect with the spinal dura mater at the foramen magnum. The dura mater mainly plays a role in protecting the brain tissue. In craniotomy, opening the dura mater is one of the important surgical steps.

[0003] Most neurosurgical craniotomies require a considerable amount of time, and existing dural incision devices all require prolonged hand-held operation. For example, the dural incision device for neurosurgery disclosed in CN114642500A has good functionality, but its complex overall structure makes it heavy, and it requires connecting wires. Prolonged hand-held operation during surgery can lead to hand fatigue, affecting the surgical cutting accuracy. The dragging of the wires at the tail end can also affect the surgeon's operating space, thereby increasing the surgical risk. Therefore, this invention proposes a dural incision device for neurosurgery to solve the problems existing in the prior art. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a dural incision device for neurosurgery. This device, through a rotating connection to a rocker arm, provides movable support for the incision blade mechanism. It only requires manual gripping and directional adjustment, eliminating the need for full hand-held operation of the incision blade mechanism. This reduces the weight of the incision blade mechanism on the surgeon, increasing surgical precision. A drive mechanism moves the dural blade back and forth, mimicking manual cutting, while simultaneously controlling the depth of the incision, further improving the accuracy of dural incision and making cutting easier and less strenuous.

[0005] To achieve the objectives of this invention, the present invention is implemented through the following technical solution: a dura mater incision device for neurosurgery, comprising a movable rocker arm mechanism and an incision knife mechanism. The movable rocker arm mechanism includes a movable cabinet mechanism, a rotation damper, a rotating column, a mounting base, a connecting rocker arm, and a connecting mechanism. A rotating column is mounted on the movable cabinet mechanism via the rotation damper, the rotation damper being embedded in the movable cabinet mechanism. The rotating column is fixedly installed in the middle of the rotation damper. A connecting rocker arm is mounted on the upper end of the rotating column via the mounting base. A connecting rocker arm is provided at the end of the connecting rocker arm. A connecting mechanism is used to install the cutting knife mechanism. The cutting knife mechanism includes a handle, a hinged connecting seat, a guard plate, a movable guide groove, a movable frame, an adjustment seat mechanism, a meningeal cutting knife, and a drive mechanism. The front end of the handle is provided with a guard plate through the hinged connecting seat. The tilt angle of the guard plate can be adjusted according to surgical needs to facilitate the cutting of the curved dura mater. A movable frame is provided above the guard plate through the movable guide groove. The meningeal cutting knife is provided below the movable frame through the adjustment seat mechanism to facilitate the control of the depth of the meningeal cutting knife. A drive mechanism is provided between the handle and the movable frame.

[0006] Further improvements are made in the following aspects: The mobile cabinet mechanism includes a main cabinet body, a disinfection pool, a storage drawer, casters, and self-locking guide wheels. The main cabinet body is equipped with a disinfection pool, which can be used to disinfect and clean surgical instruments or meningotomy knives after use. The main cabinet body is equipped with a storage drawer. Casters are provided on the front side of the lower part of the main cabinet body. Self-locking guide wheels are symmetrically arranged on the rear side of the lower part of the main cabinet body. The rotation damper is located on the rear side of the upper part of the main cabinet body.

[0007] Further improvements include: an ultrasonic transducer is installed at the bottom of the disinfection pool, a main controller is installed inside the main cabinet, the ultrasonic transducer is electrically connected to the main controller, and the surgical instruments are initially ultrasonically cleaned after use using ultrasonic waves; a label slot is provided on the front side of the storage drawer.

[0008] A further improvement is made in that: the connecting mechanism includes a hinge column, a universal ball joint, a power connector, and an electrical connection mounting base. The front end of the connecting rocker arm is provided with a hinge column, and the front end of the hinge column is provided with a power connector via the universal ball joint. The hinge column and the universal ball joint facilitate the doctor to adjust and operate the meningioma incision knife at any angle by holding the knife handle. The rear end of the knife handle is provided with an electrical connection mounting base, which is connected to the power connector. The rear end of the power connector is electrically connected to the outside, and the wiring harness is wound around the connecting rocker arm.

[0009] A further improvement is that the adjustment seat mechanism includes an adjustment knob, an adjustment plate, an observation slot, and a plug-in knife holder. The adjustment knob is provided on the movable frame, the adjustment plate is provided below the adjustment knob, the observation slot is provided on the guard plate below the adjustment plate, and the plug-in knife holder is provided below the adjustment plate. The position of the adjustment plate can be controlled by adjusting the knob, thereby controlling the extension length of the meningiomab installed under the plug-in knife holder.

[0010] Further improvements include: symmetrical guide grooves are provided on the inner sidewall of the movable frame, and symmetrical guide blocks are provided on both sides of the adjustment plate. The guide blocks are slidably adapted to the guide grooves. An insertion groove is provided below the insertion knife holder, and a snap-fit ​​protrusion is provided in the insertion groove. The meningeal cutter is inserted into the insertion groove and positioned and installed by the snap-fit ​​protrusion.

[0011] Further improvements are made in that: the driving mechanism includes a drive motor, an eccentric disk, a rubber rod guide groove, a guide tube, and a connecting rubber rod; the drive motor is installed inside the tool holder; the output end of the drive motor is provided with an eccentric disk; the lower end of the tool holder is provided with a rubber rod guide groove; the guard plate is provided with a guide tube, which is flared on the side near the tool holder; and the connecting rubber rod is provided on the eccentric disk.

[0012] Further improvements include: the connecting rubber rod passes through the guide tube of the rubber rod guide groove and is fixedly connected to one side of the movable frame; in order to increase the strength and toughness of the connecting rubber rod, multiple soft steel wires can be inserted inside the connecting rubber rod, so that it can be bent and can also realize the conversion of the drive type; the tool handle is provided with a drive button, and the drive button is electrically connected to the drive motor.

[0013] The beneficial effects of this invention are as follows: By rotating the connecting rocker arm, the invention can provide movable support for the cutting knife mechanism. Only manual gripping and directional adjustment are required, eliminating the need for full hand-held operation of the cutting knife mechanism. This relieves the surgeon of the weight of the cutting knife mechanism, effectively solving the risk of fatigue caused by prolonged gripping of heavy equipment, and increasing the precision of surgical operations. The drive mechanism moves the dura mater knife back and forth, mimicking manual cutting motions, while simultaneously controlling the depth of the dura mater incision, further improving the precision of dural incision. The cutting is labor-saving and convenient, and is worthy of promotion. Attached Figure Description

[0014] Figure 1 is a schematic diagram of the main structure of the present invention.

[0015] Figure 2 is a cross-sectional schematic diagram of the cutting mechanism of the present invention.

[0016] Figure 3 is a schematic cross-sectional view of the protective plate of the present invention.

[0017] Figure 4 is a front view structural diagram of the main cabinet of the present invention.

[0018] The components include: 1. Rotary damper; 2. Rotating column; 3. Mounting base; 4. Connecting rocker arm; 5. Knife handle; 6. Hinge connecting base; 7. Protective plate; 8. Movable guide groove; 9. Movable frame; 10. Meningotomy knife; 11. Main cabinet; 12. Disinfection pool; 13. Storage drawer; 14. Casters; 15. Self-locking guide wheels; 16. Ultrasonic transducer; 17. Main controller; 18. Sign slot; 19. Hinge column; 20. Universal ball seat; 21. Electrical connection base; 22. Electrical connection mounting base; 23. Adjustment knob; 24. Adjustment plate; 25. Clearance observation slot; 26. Insert knife holder; 27. Guide groove; 28. Guide block; 29. ​​Insert groove; 30. Snap-fit ​​protrusion; 31. Drive motor; 32. Eccentric plate; 33. Rubber rod guide groove; 34. Guide tube; 35. Connecting rubber rod; 36. Drive button. Detailed Implementation

[0019] To enhance understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0020] Craniotomy is a primary surgical procedure in neurosurgery for treating various intracranial tumors, cerebrovascular diseases, and traumatic brain injuries. Opening the dura mater is a crucial step in craniotomy. The dura mater, a thick and tough double-layered membrane, lies between the skull and brain tissue, enveloping the entire surface of the brain. The outer layer of the dura mater is the periosteum of the inner surface of the skull; the inner layer is thicker and tougher than the outer layer and continues to the spinal dura mater at the foramen magnum. The dura mater primarily protects the brain tissue. During craniotomy, the dura mater is exposed after the skull is opened; further opening of the dura mater is necessary to expose the corresponding brain regions and perform subsequent procedures. Therefore, opening the dura mater is a necessary step in the vast majority of craniotomies.

[0021] When opening the dura mater, the traditional method is for the surgeon to first use a meningeal hook to lift the outer layer of the dura mater and then use a sharp knife to make a small incision in the dura mater. Then, one side of the blade of the meningeal scissors is inserted under the dura mater through the small incision, and the surgeon cuts and advances forward while cutting, cutting the dura mater in an arc or radial shape. Alternatively, after making the small incision, a grooved probe can be inserted under the dura mater through the small incision. The surgeon holds the grooved probe in one hand and advances it forward, while using the sharp knife in the other hand to cut the dura mater along the groove of the grooved probe.

[0022] Current methods require manual operation. The process of inserting scissors to cut the dura mater involves both moving the scissors forward and opening and closing them, making it difficult to control the depth and easily causing damage to internal brain tissue, thus affecting the success rate of the surgery. Existing electrically assisted dura mater cutting devices have complex structures and are quite heavy. Since the operation of these devices still requires manual control by the surgeon, the weight can easily cause hand fatigue, compromising surgical precision during subsequent procedures. Furthermore, short rests after fatigue increase the operation time, and the longer the operation, the higher the risk. Therefore, there is currently no solution to these problems.

[0023] Based on this, this embodiment provides a dura mater incision device for neurosurgery. As shown in Figures 1-4, the device includes a movable rocker arm mechanism and an incision knife mechanism. The movable rocker arm mechanism includes a movable cabinet mechanism, a rotation damper 1, a rotating column 2, a mounting base 3, a connecting rocker arm 4, and a connecting mechanism. The rotating column 2 is provided on the movable cabinet mechanism via the rotation damper 1. The rotation damper is embedded in the movable cabinet mechanism. The rotating column is fixedly installed in the middle of the rotation damper to facilitate the damped rotation of the connecting rocker arm. The upper end of the rotating column 2 is provided with the connecting rocker arm 4 via the mounting base 3. The end of the connecting rocker arm 4 is provided with a connecting mechanism. The cutting mechanism includes a handle 5, a hinged connector 6, a guard plate 7, a movable guide groove 8, a movable frame 9, an adjustment mechanism, a meningeal cutter 10, and a drive mechanism. The guard plate 7 is mounted on the front end of the handle 5 via the hinged connector 6. The angle of the guard plate can be adjusted according to surgical needs to facilitate the cutting of curved dura mater. The movable frame 9 is mounted on the upper part of the guard plate 7 via the movable guide groove 8. The meningeal cutter 10 is mounted on the lower side of the movable frame 9 via the adjustment mechanism to facilitate control of the depth of the meningeal cutter. A drive mechanism is provided between the handle 5 and the movable frame 9. The drive mechanism drives the meningeal cutter under the movable frame to move back and forth for cutting.

[0024] By rotating the connecting rocker arm, the incision mechanism can be provided with movable support. It can be moved by simply grasping and adjusting the direction, without having to hold the incision mechanism completely by hand. This relieves the doctor of the weight of the incision mechanism, effectively solving the risk of fatigue caused by the surgeon's arm holding a heavy device for a long time, and increasing the precision of the surgical operation.

[0025] The mobile cabinet mechanism includes a main cabinet 11, a disinfection pool 12, a storage drawer 13, casters 14, and self-locking guide wheels 15. The main cabinet 11 is equipped with a disinfection pool 12, which can disinfect and clean surgical instruments or meningotomy knives after use. The main cabinet 11 is equipped with a storage drawer 13. Casters 14 are located on the front side of the bottom of the main cabinet 11. Self-locking guide wheels 15 are symmetrically arranged on the rear side of the bottom of the main cabinet 11 to facilitate the overall movement and positioning of the main cabinet. A rotation damper 1 is located on the rear side of the top of the main cabinet 11.

[0026] An ultrasonic transducer 16 is installed at the bottom of the disinfection pool 12, and a main controller 17 is installed inside the main cabinet 11. The ultrasonic transducer 16 is electrically connected to the main controller 17. The ultrasonic transducer 16 performs preliminary ultrasonic cleaning of the surgical instruments after use, which facilitates the subsequent cleaning and disinfection procedures. A label slot 18 is provided on the front side of the storage drawer 13 to facilitate the labeling of the items stored in the storage drawer.

[0027] The connecting mechanism includes a hinge column 19, a universal ball joint 20, a power connector 21, and an electrical connection mounting base 22. The hinge column 19 is located at the front end of the connecting rocker arm 4, and the power connector 21 is located at the front end of the hinge column 19 via the universal ball joint 20. The hinge column and universal ball joint facilitate the doctor to hold the scalpel handle and adjust and operate the meningioma incision knife at any angle. The electrical connection mounting base 22 is located at the rear end of the scalpel handle 5. The electrical connection mounting base 22 is connected to the power connector 21. The rear end of the power connector is electrically connected to the outside, and the wire harness is wound around the connecting rocker arm to avoid the dragging of the scattered wire harness from affecting the surgical process.

[0028] The adjustment mechanism includes an adjustment knob 23, an adjustment plate 24, an observation slot 25, and a plug-in knife holder 26. The adjustment knob 23 is installed on the movable frame 9, and the adjustment plate 24 is installed below the adjustment knob 23. The observation slot 25 is installed on the guard plate 7 below the adjustment plate 24, and the plug-in knife holder 26 is installed below the adjustment plate 24. The position of the adjustment plate can be controlled by adjusting the knob, thereby controlling the extension length of the meningeal cutter installed under the plug-in knife holder, and realizing the adjustment of the cutting depth.

[0029] The inner wall of the movable frame 9 is symmetrically provided with guide grooves 27, and the two sides of the adjustment plate 24 are symmetrically provided with guide blocks 28. The guide blocks 28 and the guide grooves 27 are slidably matched. The insert slot 29 is provided below the insert knife holder 26. The insert slot 29 is provided with a snap-fit ​​protrusion 30. The meningotomy knife 10 is inserted into the insert slot 29 and positioned by the snap-fit ​​protrusion 30, which facilitates the quick replacement of the meningotomy knife.

[0030] The drive mechanism includes a drive motor 31, an eccentric disk 32, a rubber rod guide groove 33, a guide tube 34, and a connecting rubber rod 35. The drive motor 31 is installed inside the tool holder 5, and the eccentric disk 32 is installed at the output end of the drive motor 31. The rubber rod guide groove 33 is installed at the lower end of the tool holder 5. The guide tube 34 is installed on the guard plate 7. The guide tube is flared on the side near the tool holder. The connecting rubber rod 35 is installed on the eccentric disk 32.

[0031] The connecting rod 35 passes through the guide tube 34 of the rod guide groove 33 and is fixedly connected to one side of the movable frame 9. In order to increase the strength and toughness of the connecting rod, multiple soft steel wires can be inserted inside the connecting rod so that it can be bent and the drive type can be changed. The tool holder 5 is provided with a drive button 36, which is electrically connected to the drive motor 31.

[0032] When using this neurosurgical dura mater cutting device, first install the cutting blade mechanism at the front end of the connecting rocker arm, and then install the dura mater cutting blade on the lower side of the insert blade seat to begin use;

[0033] In use, the height of the adjustment plate is first controlled by adjusting the knob according to the thickness of the patient's dura mater, thereby adjusting the depth of the meningotomy knife to avoid damaging brain tissue by cutting too deeply. Then, the doctor holds the knife handle and controls the meningotomy knife to move back and forth to cut by using the drive button. At this time, the doctor only needs to adjust the cutting position and direction by extending and retracting the universal ball joint and connecting rocker arm, without having to overcome the overall weight of the cutting knife mechanism, thus avoiding hand fatigue caused by holding it for a long time.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dura mater cutting device for neurosurgery, characterized in that: The device includes a movable rocker arm mechanism and a cutting knife mechanism. The movable rocker arm mechanism includes a movable cabinet mechanism, a rotation damper (1), a rotating column (2), a mounting base (3), a connecting rocker arm (4), and a connecting mechanism. The rotating column (2) is provided on the movable cabinet mechanism via the rotation damper (1). The upper end of the rotating column (2) is provided with a connecting rocker arm (4) via the mounting base (3). The end of the connecting rocker arm (4) is provided with a connecting mechanism. The cutting knife mechanism includes a knife handle (5), a hinged connecting base (6), a guard plate (7), a movable guide groove (8), a movable frame (9), an adjustment base mechanism, a meningeal cutter (10), and a driving mechanism. The front end of the knife handle (5) is provided with a guard plate (7) via the hinged connecting base (6). The upper part of the guard plate (7) is provided with a movable frame (9) via the movable guide groove (8). The lower side of the movable frame (9) is provided with a meningeal cutter (10) via the adjustment base mechanism. A driving mechanism is provided between the knife handle (5) and the movable frame (9).

2. The dura mater cutting device for neurosurgery according to claim 1, characterized in that: The mobile cabinet mechanism includes a main cabinet (11), a disinfection pool (12), a storage drawer (13), casters (14) and self-locking guide wheels (15). The main cabinet (11) is equipped with a disinfection pool (12), the main cabinet (11) is equipped with a storage drawer (13), the main cabinet (11) is equipped with casters (14) on the front side below the main cabinet (11), the main cabinet (11) is symmetrically equipped with self-locking guide wheels (15) on the rear side below the main cabinet (11), and the rotation damper (1) is located on the rear side above the main cabinet (11).

3. The dura mater cutting device for neurosurgery according to claim 2, characterized in that: The bottom of the disinfection pool (12) is equipped with an ultrasonic transducer (16), the main cabinet (11) is equipped with a main controller (17), the ultrasonic transducer (16) is electrically connected to the main controller (17), and the front side of the storage drawer (13) is equipped with a nameplate slot (18).

4. The dura mater cutting device for neurosurgery according to claim 1, characterized in that: The connecting mechanism includes a hinge column (19), a universal ball joint (20), a power connector (21), and an electrical connection mounting base (22). The front end of the connecting rocker arm (4) is provided with a hinge column (19), and the front end of the hinge column (19) is provided with a power connector (21) through the universal ball joint (20). The rear end of the tool holder (5) is provided with an electrical connection mounting base (22), and the electrical connection mounting base (22) is connected to the power connector (21).

5. The dura mater cutting device for neurosurgery according to claim 1, characterized in that: The adjustment seat mechanism includes an adjustment knob (23), an adjustment plate (24), an obstacle avoidance observation slot (25), and a plug-in knife holder (26). The movable frame (9) is provided with an adjustment knob (23), and an adjustment plate (24) is provided below the adjustment knob (23). An obstacle avoidance observation slot (25) is provided on the guard plate (7) below the adjustment plate (24), and a plug-in knife holder (26) is provided below the adjustment plate (24).

6. The dura mater cutting device for neurosurgery according to claim 5, characterized in that: The movable frame (9) has symmetrical guide grooves (27) on its inner sidewall. The adjustment plate (24) has symmetrical guide blocks (28) on both sides. The guide blocks (28) and guide grooves (27) slide and adapt to each other. The insertion slot (29) is provided below the insertion knife holder (26). The insertion slot (29) has a snap-fit ​​protrusion (30). The meningotomy knife (10) is inserted into the insertion slot (29) and positioned and installed by the snap-fit ​​protrusion (30).

7. The dura mater cutting device for neurosurgery according to claim 1, characterized in that: The driving mechanism includes a drive motor (31), an eccentric disk (32), a rubber rod guide groove (33), a guide tube (34), and a connecting rubber rod (35). The drive motor (31) is provided inside the tool holder (5). The output end of the drive motor (31) is provided with an eccentric disk (32). The lower end of the tool holder (5) is provided with a rubber rod guide groove (33). The guide tube (34) is provided on the guard plate (7). The connecting rubber rod (35) is provided on the eccentric disk (32).

8. The dura mater cutting device for neurosurgery according to claim 7, characterized in that: The connecting rod (35) passes through the guide tube (34) of the rod guide groove (33) and is fixedly connected to one side of the movable frame (9). The handle (5) is provided with a drive button (36), which is electrically connected to the drive motor (31).

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