An angle-adjustable skull base surgery drill and an operating method thereof

Abstract

The present application relates to the technical field of angle-adjustable skull base operation grinding drill, and discloses an angle-adjustable skull base operation grinding drill and an operation method thereof, which comprises a main body assembly, including a hand-held handle, one side of the handle is provided with a flexible rotating shaft, and the rotating shaft is movably connected with a grinding head at one end; an adjusting assembly is arranged on one side of the handle and comprises an adjusting piece, and the adjusting piece is provided with a locking piece; the flexible pipeline composed of short annular pipelines staggered and hinged can be self-adaptively bent according to the actual curvature of different anatomical paths, so that the grinding head can accurately reach the operation site, effectively expand the exposure range of the operation field, reduce the operation difficulty, the flexible rotating shaft connects the grinding head and the main rotating shaft to ensure power transmission, after confirming the operation path, the locking mechanism is triggered by using the trachea and the air bag, so that the flexible pipeline is quickly changed into a rigid state, the structure is kept stable during the bone grinding process, the grinding head is prevented from deviating due to pipeline deformation, and the operation precision is improved.

Description

Technical Field

[0001] This invention relates to the field of skull base surgical drill technology, and in particular to an adjustable-angle skull base surgical drill and its operation method. Background Technology

[0002] The skull base region has a complex anatomy, dense nerves and blood vessels, and limited surgical space, which places extremely high demands on the precision and minimal invasiveness of the surgical approach. A reasonable surgical approach design can not only maximize the exposure of the surgical field and completely remove the lesion, but also significantly reduce damage to important structures and reduce postoperative complications. However, unlike traditional laparoscopic surgery, skull base endoscopic surgery involves the precise removal of a large number of bony structures. For example, the transnasal or transoral approach requires the creation of a keyhole bone window, or the removal of the posterior wall of the internal auditory canal in acoustic neuroma surgery. Especially in curved approaches such as transnasal and transoral approaches, rigid instruments are difficult to adapt to complex anatomical paths, resulting in insufficient exposure of the surgical field or increased operational risks. It is difficult for doctors to accurately locate the lesion. With the expansion of the surgical scope and the increase in complexity, the limitations of traditional fixed-angle drills are becoming increasingly apparent. Summary of the Invention

[0003] In view of the problems existing in the above and / or existing adjustable angle surgical drills for skull base surgery and their operation methods, the present invention is proposed.

[0004] Therefore, the problem that this invention aims to solve is that traditional fixed-angle drills, in curved approaches, suffer from insufficient surgical field exposure and high operational risks due to their rigid structure's inability to adapt to complex anatomical pathways.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a skull base surgical drill, comprising a main body assembly including a handle, a flexible rotating shaft disposed on one side of the handle, and a grinding head movably connected to one end of the flexible rotating shaft;

[0006] An adjustment assembly, located on one side of the hand handle, includes an adjustment member, and the adjustment member is provided with a locking member;

[0007] The adjusting component includes annular tubes, and there are multiple annular tubes. Adjacent annular tubes are hinged together by connecting rods. One end of the connecting rod is fixed to another annular tube, and two connecting rods are fixed on one annular tube.

[0008] The locking component includes an airbag fixed to the inner wall of the annular tube, a fixing block fixed to the airbag, a first moving groove provided on the fixing block, a moving block slidably disposed in the first moving groove, an extension block fixed to one side of the moving block, and a spring fixed to one side of the extension block.

[0009] As a preferred embodiment of the skull base surgical drill of the present invention, the fixing block is provided with a second moving groove, the extension block slides in the second moving groove, and the other end of the spring is fixed to the inner wall of the second moving groove.

[0010] In a preferred embodiment of the skull base surgical drill of the present invention, the number of the fixation blocks is multiple.

[0011] As a preferred embodiment of the skull base surgical drill of the present invention, two air bladders are fixed in two adjacent annular tubes, the air bladders are connected by auxiliary air tubes, there are multiple air bladders, and one of the air bladders is fixed with a main air tube.

[0012] In a preferred embodiment of the skull base surgical drill of the present invention, the connecting rods on adjacent annular tubes are staggered.

[0013] As a preferred embodiment of the skull base surgical drill of the present invention, there is a certain gap between two adjacent fixing blocks.

[0014] In a preferred embodiment of the skull base surgical drill of the present invention, a protective sleeve is provided on the flexible rotating shaft.

[0015] In a preferred embodiment of the skull base surgical drill of the present invention, the angle between the air bladder and the connecting rod between two adjacent annular tubes is a right angle.

[0016] In a preferred embodiment of the skull base surgical drill of the present invention, a wire is fixed to one side of the hand handle.

[0017] As a preferred embodiment of the skull base surgical drilling operation method of the present invention, the hand handle is connected to the power host and the pneumatic control device to confirm that the auxiliary air tube, the main air tube and the airbag passage are sealed.

[0018] Then, the annular tube is advanced along the anatomical curve path using its hinged structure. At the same time, the position of the tube end is observed in real time through the endoscope to avoid touching blood vessels or nerves, so that the working surface of the burr head fits the target bone tissue and confirms that the surgical field is fully exposed.

[0019] Then, turn on the inflation switch, and the air control device injects gas into the airbag at the pipe hinge, locking the hinges between the sections of the annular pipe to form a rigid support structure.

[0020] The power system is started, and the rotation speed is adjusted according to the hardness of the bone tissue, which drives the grinding head to rotate and grind at a uniform speed along the preset trajectory;

[0021] After the surgery, the air is released, the flexible tube returns to its bendable state, and it is slowly withdrawn along the inlet to avoid scraping the tissue when the rigid structure is withdrawn.

[0022] The beneficial effects of this invention are as follows: The flexible tube, which is composed of short annular tubes that are interlocked and hinged, can adaptively bend according to the actual curvature of different anatomical paths, so that the burr head can accurately reach the surgical site, effectively expand the surgical field exposure range, and reduce the difficulty of surgical operation. The flexible rotating shaft connects the burr head and the main rotating shaft to ensure power transmission. After the surgical path is confirmed, the trachea and airbag trigger locking mechanism can quickly transform the flexible tube into a rigid state, maintain structural stability during bone grinding, avoid burr head displacement caused by tube deformation, and thus improve surgical accuracy. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of 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. Wherein:

[0024] Figure 1 This is a structural diagram of an adjustable-angle skull base surgical drill and its operation method.

[0025] Figure 2 A diagram of the annular tube structure of an adjustable-angle skull base surgical drill and its operation method.

[0026] Figure 3 An adjustable-angle skull base surgical drill and its operation method. Figure 2 Enlarged view of the structure at point A in the middle.

[0027] Figure 4 A diagram showing the air-filled structure of an adjustable-angle skull base surgical drill and its operation method.

[0028] Figure 5 A cross-sectional view of an adjustable-angle skull base surgical drill and its operation method.

[0029] Figure 6 An adjustable-angle skull base surgical drill and its operation method. Figure 5 Enlarged view of the structure at point B in the middle.

[0030] Figure 7 Another perspective cross-sectional view of the annular tube used for adjusting the angle of the skull base surgical drill and its operation.

[0031] Figure 8 An adjustable-angle skull base surgical drill and its operation method. Figure 7 Enlarged view of the structure at point C.

[0032] Figure 9A diagram of the fixation block structure for an adjustable-angle skull base surgical drill and its operation method. Detailed Implementation

[0033] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0034] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments. Example

[0036] Reference Figures 1-6 This is the first embodiment of the present invention. This embodiment provides an adjustable-angle skull base surgical drill and its operation method. The skull base surgical drill includes a main body component 100, including a handle 101. A flexible rotating shaft 102 is provided on one side of the handle 101. A grinding head 103 is movably connected to one end of the flexible rotating shaft 102. A transmission mechanism is provided inside the handle 101. The active rotating shaft is connected to the flexible rotating shaft 102. The flexible rotating shaft 102 is of model NT-10 or NT-15. It is flexible but maintains rigidity to transmit torque. This is prior art, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle. After being powered on, the torque of the power host is transmitted to the grinding head 103 through the flexible rotating shaft 102, thereby driving the grinding head 103 to rotate, thereby performing grinding operations.

[0037] The adjustment component 200, located on one side of the handle 101, includes an adjustment member 201 and a locking member 202. The adjustment member 201 is used to control whether the connection between the handle 101 and the grinding head 103 is rigid. When the grinding head 103 needs to be advanced along the anatomical curved path, the connection between the two is flexible and the angle can be changed. After the path is confirmed, the connection becomes rigid to prevent the grinding head 103 from moving during the grinding process. The locking member 202 is used to assist the adjustment member 201 in making the connection between the handle 101 and the grinding head 103 rigid.

[0038] The adjusting component 201 includes annular tubes 2011. There are multiple annular tubes 2011. Adjacent annular tubes 2011 are hinged by connecting rods 2012. One end of the connecting rod 2012 is fixed to another annular tube 2011. Two connecting rods 2012 are fixed on one annular tube 2011, so that the two adjacent annular tubes 2011 can rotate within a certain range, thereby flexibly adapting to surgical approaches with different curvatures and realizing multi-angle bone structure removal. There is a certain friction at the hinge of the connecting rods 2012. Without other external forces, the relative position between the two adjacent annular tubes 2011 cannot be changed by gravity alone.

[0039] The locking component 202 includes an airbag 2021 fixed to the inner wall of the annular tube 2011. One side of the airbag 2021 has a recess, and a fixing block 2022 is fixed on the inner wall of the recess of the airbag 2021. The side of the fixing block 2022 is fixed to the inner wall of the recess of the airbag 2021. When there is a certain angle between adjacent annular tubes 2011, the airbag 2021 and the fixing block 2022 can move accordingly without hindering the rotation between adjacent annular tubes 2011. Two airbags 2021 are symmetrically arranged in one annular tube 2011.

[0040] A first movable groove 2022-1 is provided on the fixed block 2022. A movable block 2023 is slidably disposed in the first movable groove 2022-1. The movable block 2023 can slide along the first movable groove 2022-1. An extension block 2024 is fixed to one side of the movable block 2023. A spring 2025 is fixed to one side of the extension block 2024. The spring 2025 applies a continuous pushing force to the extension block 2024 for resetting the movable block 2023.

[0041] After adjusting the relative positions of the multiple annular tubes 2011, the airbag 2021 is inflated. The gas inside the airbag 2021 fills it, causing it to expand. At this time, the airbag 2021 moves closer to the flexible rotating shaft 102. Simultaneously, the area of ​​the airbag 2021 near the moving block 2023 expands, pushing the moving block 2023 along the direction of the first moving groove 2022-1, moving it away from the flexible rotating shaft 102. The movement of the moving block 2023 located inside the annular tube 2011 is restricted by the inner wall of the annular tube 2011 and cannot continue to move. The space between the two annular tubes 2011... The movable block 2023 at the gap will move to the gap between the two annular tubes 2011 and fill the gap. On the other side, airbags 2021 and multiple sets of fixed blocks 2022 and movable blocks 2023 are also symmetrically arranged. The gap between the corresponding two annular tubes 2011 on this side will also be filled by multiple fixed blocks 2022. Thus, the gap between the annular tubes 2011 is filled by multiple fixed blocks 2022, and the hinge between the multiple annular tubes 2011 is locked, thus forming a rigid pipe. The airbag 2021 is always kept in a full state, thus ensuring the stability of the grinding head 103 during grinding.

[0042] After the surgery is completed, the airbag 2021 is deflated, and the airbag 2021 no longer compresses the fixing block 2022. The spring 2025 drives the fixing block 2022 to reset, and the contact ring tube 2011 is hinged and locked. The tube returns to a flexible state and slowly exits along the inlet. Example

[0043] Reference Figures 5-9 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0044] Specifically, a second moving groove 2022-2 is provided on the fixed block 2022, the extension block 2024 slides in the second moving groove 2022-2, and the other end of the spring 2025 is fixed to the inner wall of the second moving groove 2022-2.

[0045] Specifically, there are multiple fixing blocks 2022, which are evenly distributed in the recessed areas within the airbag 2021. As shown in the figure, the airbag 2021 is not yet inflated.

[0046] Specifically, two airbags 2021 are fixed inside two adjacent annular tubes 2011. The airbags 2021 are connected by a secondary air tube 2026. There are multiple airbags 2021. A main air tube 2027 is fixed on one of the airbags 2021. The secondary air tube 2026 is used to connect adjacent airbags 2021. The other end of the main air tube 2027 is connected to a gas control device. The gas control device can deliver gas along the main air tube 2027 to one of the airbags 2021. Through the secondary air tube 2026, all airbags 2021 are inflated and can be kept in an inflated state for a long time. This is the prior art, and this solution will not be described in detail. Moreover, those skilled in the art can clearly understand the working principle.

[0047] Specifically, the connecting rods 2012 on adjacent annular tubes 2011 are staggered. Through the staggered arrangement of the hinge positions, the staggered connecting rods 2012 allow the adjacent annular tubes 2011 to move relative to each other in multiple planes, so that the pipe structure composed of multiple annular tubes 2011 has the ability to flexibly deform, thereby enabling the surgical drill to flexibly adapt to surgical approaches with different curvatures and realize the removal of bone structures from multiple angles. Example

[0048] Reference Figures 1-9 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0049] Specifically, there is a certain gap between two adjacent fixing blocks 2022. By setting the gap, the fixing blocks 2022 are prevented from obstructing the rotation of the adjacent annular tube 2011 when the airbags on both sides rotate with the adjacent annular tube 2011.

[0050] Specifically, a protective sleeve 104 is provided outside the flexible rotating shaft 102. The protective sleeve 104 is similar to a bellows, which protects the rotating shaft of the flexible rotating shaft 102. One end of the protective sleeve 104 is fixed to the hand handle 101, and the other end is fixed to the annular tube 2011 closest to the grinding head 103. The annular tube 2011 closest to the grinding head 103 has a closed surface at its top, and a through groove corresponding to the flexible rotating shaft 102 is opened in the closed surface.

[0051] Specifically, the angle between the airbag 2021 and the connecting rod 2012 between two adjacent annular tubes 2011 is a right angle.

[0052] Specifically, a wire 105 is fixed to one side of the handle 101, and the wire 105 is connected to the grinding power unit.

[0053] Specifically, connect the hand handle 101 to the power unit and air control equipment, and confirm that the passages of the auxiliary air pipe 2026, the main air pipe 2027 and the airbag 2021 are sealed.

[0054] Then, the articulated structure of the 2011 ring tube is used to advance along the anatomical curved path, while the position of the end of the tube is observed in real time through the endoscope to avoid touching blood vessels or nerves, so that the working surface of the burr head fits the target bone tissue and confirms that the surgical field is fully exposed.

[0055] Then, the inflation switch is turned on, and the air control device injects gas into the airbag 2021 at the pipe hinge, so that the hinges between each section of the annular pipe 2011 are locked, forming a rigid support structure.

[0056] Start the power system, adjust the speed according to the hardness of the bone tissue, drive the grinding head 103 to rotate, and grind at a uniform speed along the preset trajectory;

[0057] After the surgery, the air is released, the flexible tube returns to its bendable state, and it is slowly withdrawn along the inlet to avoid scraping the tissue when the rigid structure is withdrawn.

[0058] During use, the articulated structure of the annular tube 2011 is used to advance along the anatomical curvature path. At the same time, the position of the tube end is observed in real time through the endoscope to avoid touching blood vessels or nerves. The working surface of the burr head is made to fit the target bone tissue to confirm that the surgical field is fully exposed. The inflation switch is turned on and the gas control device injects gas into the airbag 2021 at the articulation of the tube.

[0059] The airbag 2021 inflates as the gas inside fills it, bringing it closer to the flexible rotating shaft 102. Simultaneously, the area of ​​the airbag 2021 near the moving block 2023 expands, pushing the moving block 2023 along the direction of the first moving groove 2022-1, moving it away from the flexible rotating shaft 102. The movement of the moving block 2023 located inside the annular tube 2011 is restricted by the inner wall of the annular tube 2011 and cannot continue. However, the moving block 2023 located in the gap between the two annular tubes 2011 will move towards the two... The gaps between the annular tubes 2011 are filled, and the gaps are filled. On the other side, airbags 2021, as well as multiple sets of fixed blocks 2022 and moving blocks 2023 are symmetrically arranged. The gaps between the corresponding two annular tubes 2011 on this side are also filled by multiple fixed blocks 2022. Thus, the gaps between the annular tubes 2011 are filled by multiple fixed blocks 2022, and the hinge between the multiple annular tubes 2011 is locked, thus forming a rigid pipe. The airbags 2021 are always kept in a full state, thus ensuring the stability of the grinding head 103 during grinding.

[0060] After the surgery is completed, the airbag 2021 is deflated, and the airbag 2021 no longer compresses the fixing block 2022. The spring 2025 drives the fixing block 2022 to reset, and the contact ring tube 2011 is hinged and locked. The tube returns to a flexible state and slowly exits along the inlet.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A surgical drill for skull base, characterized in that: include, The main body component (100) includes a hand handle (101), a flexible rotating shaft (102) is provided on one side of the hand handle (101), and a grinding head (103) is movably connected to one end of the flexible rotating shaft (102). An adjustment assembly (200) is located on one side of the hand handle (101) and includes an adjustment member (201) on which a locking member (202) is provided. The adjusting component (201) includes an annular tube (2011), and there are multiple annular tubes (2011). Adjacent annular tubes (2011) are hinged by connecting rods (2012). One end of the connecting rod (2012) is fixed to another annular tube (2011), and two connecting rods (2012) are fixed on one annular tube (2011). The locking component (202) includes an airbag (2021) fixed to the inner wall of the annular tube (2011), a fixing block (2022) fixed on the airbag (2021), a first moving groove (2022-1) opened on the fixing block (2022), a moving block (2023) slidably disposed in the first moving groove (2022-1), an extension block (2024) fixed on one side of the moving block (2023), and a spring (2025) fixed on one side of the extension block (2024). The fixed block (2022) is provided with a second moving groove (2022-2), the extension block (2024) slides in the second moving groove (2022-2), and the other end of the spring (2025) is fixed to the inner wall of the second moving groove (2022-2); After adjusting the relative positions of the multiple annular tubes (2011), the airbag (2021) is inflated, causing it to expand. The airbag (2021) moves closer to the flexible rotating shaft (102). The area of ​​the airbag (2021) near the moving block (2023) expands, pushing the moving block (2023) along the direction of the first moving groove (2022-1) away from the flexible rotating shaft (102). The moving block (2023) located inside the annular tube (2011) is restricted by the inner wall of the annular tube (2011) and cannot continue to move. The movable block (2023) in the gap between the annular tubes (2011) moves to the gap between the two annular tubes (2011) and fills the gap. On the other side, the airbag (2021) and multiple sets of fixed blocks (2022) and movable blocks (2023) are also symmetrically arranged. The gap between the two annular tubes (2011) on this side will also be filled by multiple fixed blocks (2022). Thus, by filling the gap between the annular tubes (2011) with multiple fixed blocks (2022), the hinge between the multiple annular tubes (2011) is locked, ensuring the stability of the grinding head (103).

2. The skull base surgical drill as described in claim 1, characterized in that: There are multiple fixed blocks (2022).

3. The skull base surgical drill as described in claim 1 or 2, characterized in that: Two airbags (2021) are fixed inside two adjacent annular tubes (2011). The airbags (2021) are connected by a secondary air tube (2026). There are multiple airbags (2021), and a main air tube (2027) is fixed on one of the airbags (2021).

4. The skull base surgical drill as described in claim 3, characterized in that: The connecting rods (2012) on adjacent annular tubes (2011) are staggered.

5. The skull base surgical drill as described in claim 4, characterized in that: There is a certain gap between two adjacent fixed blocks (2022).

6. The skull base surgical drill as described in claim 4 or 5, characterized in that: The flexible rotating shaft (102) is provided with a protective sleeve (104).

7. The skull base surgical drill as described in claim 6, characterized in that: The airbag (2021) between two adjacent annular tubes (2011) forms a right angle with the connecting rod (2012).

8. The skull base surgical drill as described in claim 7, characterized in that: A wire (105) is fixed to one side of the hand handle (101).

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