Skull fixation device for defining ventriculoscope angle

Abstract

The application provides a skull fixing device for limiting the angle of a ventricle mirror, which comprises a skull fixing disc, a bellows component, a cross slide rail and an endoscope clamping component; the skull fixing disc is used for being fixed on the skull of a subject; a through hole is formed in the middle of the skull fixing disc; the through hole surrounds a bone window formed on the skull of the subject; the bellows component is a flexible tube, which can be bent; the angle of the ventricle mirror is coarsely adjusted by bending the bellows component; the lower end of the bellows component is detachably installed on the skull fixing disc; the cross slide rail is installed on the upper end of the bellows component, and the endoscope clamping component is installed on the cross slide rail; the angle of the ventricle mirror is finely adjusted by adjusting the position of the endoscope clamping component on the bellows component.

Description

Technical Field

[0001] This application relates to a medical device, and more particularly to a cranial fixation device for limiting the angle of a ventriculoscope. Background Technology

[0002] In endoscopic ventriculoscopy, once the ventriculoscope is adjusted in angle and displacement, it needs to be maintained in that position. During surgery, it is usually fixed using a bedside support. This support is composed of multiple segments, with joints between them. Adjustments require individual adjustment and fixation of each joint, making it very cumbersome. Because it is located beside the operating table, it is easily bumped during surgery, causing the angle of the endoscope fixed on it to shift. Summary of the Invention

[0003] In view of the above problems, this application aims to provide an auxiliary fixation device for endoscopic ventriculoscopy, which is easy to adjust, does not occupy bedside space, and is not easily altered by unintentional bumping during surgery. This application also aims to provide an auxiliary fixation device for endoscopic ventriculoscopy that allows for both coarse and fine adjustments when adjusting the angle of the endoscopic endoscope.

[0004] The skull fixation device for limiting the angle of the ventriculoscope in this application includes: a skull fixation plate, a bellows component, a cross slide rail, and an endoscope clamping component.

[0005] A cranial fixation plate is used to fix the skull of the subject; a through hole is formed in the middle of the cranial fixation plate; the through hole surrounds a bone window opened on the skull of the subject;

[0006] The bellows component is a flexible tube that can be bent, and the angle of the ventriculoscope is coarsely adjusted by bending the bellows component; the lower end of the bellows component can be detachably mounted on the skull fixation plate.

[0007] The cross slide rail is installed at the upper end of the bellows component, and the endoscope clamping component is installed on the cross slide rail. The angle of the ventriculoscope is finely adjusted by adjusting the position of the endoscope clamping component on the bellows component.

[0008] Preferably, the cranial fixation disc includes a disc body; a plurality of screw mounting holes are formed along the disc body to fix the cranial fixation disc to the skull of the subject by screws.

[0009] Preferably, a mounting tube is formed around the through hole on the disc body; the disc body is detachably connected to the lower end of the corrugated pipe component through the mounting tube.

[0010] Preferably, the bottom surface of the disc body is formed with an arc-shaped curved surface to adapt to the physiological curvature of the subject's skull, so that the disc body fits tightly with the skull.

[0011] Preferably, a lower connecting ring is formed at the lower end of the corrugated pipe component; the lower connecting ring allows for detachable connection with the mounting pipe of the disc body.

[0012] Preferably, the lower coupling ring is joined to the mounting tube by means of threads or plug-in connection.

[0013] Preferably, the upper end of the bellows component is formed with a rectangular cross slide rail mounting box, on which the cross slide rail can be slidably mounted.

[0014] Preferably, the cross slide rail mounting box has a first sliding groove and a second sliding groove formed on its outer peripheral surface;

[0015] The cross slide rail includes a first slide rail and a second slide rail;

[0016] The first slide rail has a first guide plate and a second guide plate extending downward from both ends. The inner sides of the first guide plate and the second guide plate have protruding first teeth, which are installed in the first sliding groove.

[0017] The two ends of the second slide rail extend downward to form a third guide plate and a fourth guide plate. The inner sides of the third guide plate and the fourth guide plate have protruding second teeth, which are installed in the second sliding groove.

[0018] A long, narrow first slit is formed on the first slide rail; a long, narrow second slit is formed on the second slide rail; the overlapping part of the first and second slits is the installation port for the endoscope clamping component.

[0019] Preferably, the first guide plate has a first screw hole for installing a first bolt, and the first bolt abuts against the cross slide rail mounting box to fix the position of the first slide rail;

[0020] The third guide plate has a second screw hole for installing a second bolt. The second bolt abuts against the cross slide rail mounting box to fix the position of the second slide rail.

[0021] Preferably, the endoscope clamping component includes a first endoscope clamping flap and a second endoscope clamping flap; the first endoscope clamping flap includes a first half-cylinder; the upper end of the first half-cylinder has an outwardly extending first convex edge; the second endoscope clamping flap includes a second half-cylinder; the upper end of the second half-cylinder has an outwardly extending second convex edge; the first half-cylinder and the second half-cylinder constitute a complete cylinder, and the central hole of the cylinder is used to clamp the ventriculoscope.

[0022] The skull fixation device for limiting the angle of the ventriculoscope, as described in this application, allows for convenient fixation of the ventriculoscope to the subject's skull without occupying bedside space, and reduces the risk of unintentional disturbance during surgery that could alter the endoscope's angle. Furthermore, this skull fixation device allows for both coarse and fine adjustments to the endoscope's angle, enabling quick and easy precision control. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the cranial fixation device for limiting the angle of the ventriculoscope in this application;

[0024] Figure 2 This is a front view schematic diagram of the skull fixation device for limiting the angle of the ventriculoscope in this application;

[0025] Figure 3 This is a top view of the skull fixation device for limiting the angle of the ventriculoscope in this application.

[0026] Figure 4 This is a three-dimensional structural diagram of the skull fixation disc of the skull fixation device for limiting the angle of the ventriculoscope in this application;

[0027] Figure 5 This is a cross-sectional schematic diagram of the skull fixation disc of the skull fixation device for limiting the angle of the ventriculoscope in this application;

[0028] Figure 6 This is a three-dimensional structural diagram of the bellows component of the cranial fixation device for limiting the angle of the ventriculoscope in this application;

[0029] Figure 7 This is a cross-sectional schematic diagram of the bellows component of the cranial fixation device for limiting the angle of the ventriculoscope in this application.

[0030] Figure 8 This is a three-dimensional structural diagram of the cross rail of the cranial fixation device for limiting the angle of the ventriculoscope in this application;

[0031] Figure 9 , 10 This is a side view of the cross rail structure of the cranial fixation device for limiting the angle of the ventriculoscope in this application;

[0032] Figure 11 This is a three-dimensional structural diagram of the endoscope clamping component of the cranial fixation device for limiting the angle of the ventriculoscope in this application;

[0033] Figure 12 This is a three-dimensional structural diagram of an endoscope clamping flap of the endoscope clamping component of the skull fixation device for limiting the angle of the ventriculoscope in this application. Detailed Implementation

[0034] The skull fixation device for limiting the angle of the ventriculoscope of this application will now be described in detail with reference to the accompanying drawings.

[0035] The skull fixation device for limiting the angle of the ventriculoscope in this application includes: a skull fixation plate 10, a corrugated tube component 20, a cross slide rail 30, and an endoscope clamping component 40.

[0036] The skull fixation plate 10 is used to fix the skull of the subject; a through hole 14 is formed in the middle of the skull fixation plate 10; the through hole 14 surrounds a bone window opened on the skull of the subject.

[0037] The skull fixation plate 10 includes a disc body 11; a plurality of screw mounting holes 13 are formed along the disc body 11 to fix the skull fixation plate 10 to the skull of the subject by screws.

[0038] A mounting tube 12 is formed around the through hole 14 on the disc body 11. The disc body 11 is detachably connected to the lower end of the bellows member 20 through the mounting tube 12.

[0039] An arc-shaped curved surface is formed on the lower bottom surface of the disc body 11 to adapt to the physiological curvature of the subject's skull, so that the disc body fits tightly with the skull.

[0040] The corrugated tube component 20 is a flexible tube 22, which is capable of bending. When bending the corrugated tube component 20, it is bent using the segments of its corrugations as the smallest unit. While this bending method has the disadvantage of not being able to bend continuously at angles, it has the advantage of more stable bending angles and less susceptibility to change after bending compared to common flexible tubes. This is particularly important during surgery, preventing changes in the flexible tube's bending due to instrument manipulation during the procedure, which could lead to changes in the endoscope's position and angle. The segment-by-segment bending characteristic of the corrugated tube is used to perform coarse adjustments to the intraventricular endoscope angle. While conventional flexible tubes can be adjusted continuously, they are prone to angle changes when touched. Furthermore, conventional flexible tubes, due to their inherent elasticity, are not completely flexible; when bent and released, they will spring back. Therefore, for precise adjustments, flexible tubes can actually present certain problems.

[0041] The lower end of the bellows component 20 is formed with a lower coupling ring 21; the lower coupling ring 21 is detachably connected to the mounting tube 12 of the disc body 11.

[0042] Specifically, the lower coupling ring 21 and the mounting tube 12 can be joined together by means of threads, plugs, or magnetic attraction.

[0043] A cross slide rail 30 is installed at the upper end of the bellows member 20. Specifically, a rectangular cross slide rail mounting box 23 is formed at the upper end of the bellows member 20 so that the cross slide rail 30 can be slidably mounted thereon. The cross slide rail mounting box 23 is in communication with the flexible tube 22.

[0044] The cross-shaped slide rail mounting box 23 has a first sliding groove 23a and a second sliding groove 23b formed on its outer peripheral surface. The first sliding groove 23a and the second sliding groove 23b are formed as a pair. Figure 6 As shown, the pair of first sliding grooves 23a are formed on the outer peripheral surface of the cross slide rail mounting box 23 in the first direction, and the pair of second sliding grooves 23b are formed on the outer peripheral surface of the cross slide rail mounting box 23 in the second direction.

[0045] The cross slide rail 30 includes a first slide rail 31 and a second slide rail 32.

[0046] The first slide rail 31 has a first guide plate 31a and a second guide plate 31b extending downward from both ends. The inner sides of the first guide plate 31a and the second guide plate 31b have a protruding first tooth 31c, which is installed in the first sliding groove 23a.

[0047] The second slide rail 32 has a third guide plate 32a and a fourth guide plate 32b extending downward from both ends. The inner sides of the third guide plate 32a and the fourth guide plate 32b have protruding second teeth 32c, which are installed in the second sliding groove 23b.

[0048] A first, elongated slit 34 is formed on the first slide rail 31; a second, elongated slit 33 is formed on the second slide rail 32; the overlapping part of the first slit 34 and the second slit 33 is the endoscope clamping component mounting port 35.

[0049] The first guide plate 31a has a first screw hole 31d for installing a first bolt. The first bolt abuts against the cross slide rail mounting box to fix the position of the first slide rail 31.

[0050] Similarly, the third guide plate 32a has a second screw hole 32d for installing a second bolt. The second bolt abuts against the cross slide rail mounting box to fix the position of the second slide rail 32.

[0051] The endoscope clamping component 40 is installed in the endoscope clamping component mounting port 35 of the cross slide rail 30. The position of the endoscope clamping component 40 on the bellows component 20 is adjusted by sliding the first slide rail 31 and the second slide rail 32, thereby fine-tuning the angle of the ventriculoscope. After fine-tuning, it is fixed with bolts to maintain the fine-tuned position. Because only the fine-tuning needs to be met, the cross slide rail mounting box 23 can be made relatively small and lighter, and its own weight has less interference with the force exerted on the flexible tube 22.

[0052] This application uses a corrugated flexible tube for coarse adjustment and a cross slide rail for fine adjustment, completely avoiding the drawbacks of the flexible tube.

[0053] The endoscope clamping member 40 includes a first endoscope clamping flap and a second endoscope clamping flap. The first endoscope clamping flap includes a first semi-cylinder 41; the upper end of the first semi-cylinder 41 forms an outwardly extending first protruding edge 41a. The second endoscope clamping flap includes a second semi-cylinder 42; the upper end of the second semi-cylinder 42 forms an outwardly extending second protruding edge 42a. The first semi-cylinder 41 and the second semi-cylinder 42 constitute a complete cylinder, and the central hole 43 of the cylinder is used to clamp the ventriculoscope. The first semi-cylinder 41 and the second semi-cylinder 42 can be magnetically attracted together; specifically, magnets of opposite polarity can be provided in the first semi-cylinder 41 and the second semi-cylinder 42. The central hole 43 of the endoscope clamping member 40 clamps the endoscope with an appropriate force, so that the endoscope can only slide in the central hole 43 to adjust the displacement of the endoscope when the pushing force exceeds a threshold. This ensures that the endoscope can move when adjustment is needed and that the endoscope is not easily moved by external interference when adjustment is not needed. At least one of the first slide rail 31 and the second slide rail 32 can be made of a ferromagnetic material, such as iron, so that the endoscope clamping member 40 is attracted to it and is not easy to fall off.

[0054] In use, the cranial fixation plate is fixed to the subject's skull; a bellows component is installed on the cranial fixation plate; the endoscope clamping component is clamped at the appropriate position of the endoscope within the ventricle; the endoscope is inserted from the upper end of the bellows component, so that the endoscope clamping component is inserted into the endoscope clamping component mounting port fixed in the cross slide rail; the bellows component is bent to make a coarse adjustment of the endoscope angle; then the position of the endoscope clamping component on the cross slide rail is adjusted to make a fine adjustment of the endoscope angle. The adjustment of the endoscope angle and displacement (i.e., the adjustment of the insertion depth into the cranium) may be performed repeatedly and alternately until the position and angle of the endoscope are both in the appropriate position.

[0055] Unless otherwise defined, all technical and / or scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this invention relates. The materials, methods, and embodiments mentioned in this application are illustrative only and not restrictive.

[0056] Although the present invention has been described in conjunction with specific embodiments, those skilled in the art can make appropriate substitutions, modifications and changes within the inventive spirit of this application, and such substitutions, modifications and changes still fall within the protection scope of this application.

Claims

1. A skull fixation device to define a ventriculoscope angle, comprising: A cranial fixation disc, a bellows member, a cross slide, and an endoscope holding member; The cranial fixation disc is used to be fixed on the skull of a subject; a through hole is formed in the middle of the cranial fixation disc; the through hole surrounds a bone window formed on the skull of the subject; The bellows member is a flexible tube, which can be bent; the angle of an intracerebral endoscope is coarsely adjusted by bending the bellows member; the lower end of the bellows member is detachably installed on the cranial fixation disc; The cross slide is installed on the upper end of the bellows member; the endoscope holding member is installed on the cross slide; the angle of the intracerebral endoscope is finely adjusted by adjusting the position of the endoscope holding member on the bellows member; The cranial fixation disc comprises a disc body; a plurality of screw installation holes are formed along the disc body, so as to fix the cranial fixation disc on the skull of the subject by screws; An installation tube is formed on the disc body around the through hole; the disc body and the lower end of the bellows member are detachably combined together through the installation tube; The lower end of the bellows member is formed with a lower combination ring; the disc body and the installation tube are detachably combined together through the lower combination ring; The upper end of the bellows member is formed with a rectangular cross slide installation box, so as to slidably install the cross slide on the cross slide installation box; The cross slide installation box is formed with a first sliding groove and a second sliding groove on the outer peripheral surface thereof; The cross slide comprises a first slide and a second slide; The two ends of the first slide are downwardly extended with a first guide plate and a second guide plate; the inner sides of the first guide plate and the second guide plate are formed with a protruding first tooth part; the first tooth part is installed in the first sliding groove; The two ends of the second slide are downwardly extended with a third guide plate and a fourth guide plate; the inner sides of the third guide plate and the fourth guide plate are formed with a protruding second tooth part; the second tooth part is installed in the second sliding groove; A first slit is formed on the first slide; a second slit is formed on the second slide; the overlapping part of the first slit and the second slit is an endoscope holding member installation port.

2. The cranial fixation device for defining the angle of an intracerebral endoscope according to claim 1, wherein: A circular arc-shaped curved surface is formed on the lower bottom surface of the disc body, so as to adapt to the physiological curve of the skull of the subject, and make the disc body closely adhere to the skull.

3. The cranial fixation device for defining the angle of an intracerebral endoscope according to claim 1, wherein: The lower combination ring and the installation tube are combined together by a threaded mode or a plug-in mode.

4. The cranial fixation device for defining the angle of an intracerebral endoscope according to claim 1, wherein: The first guide plate is formed with a first screw hole, which is used to install a first bolt; the first bolt abuts against the cross slide installation box, so as to fix the position of the first slide; The third guide plate is formed with a second screw hole, which is used to install a second bolt; the second bolt abuts against the cross slide installation box, so as to fix the position of the second slide.

5. The cranial fixation device for defining the angle of an intracerebral endoscope according to claim 1, wherein: The endoscope clamping member comprises a first endoscope clamping petal and a second endoscope clamping petal; the first endoscope clamping petal comprises a first half cylinder; an upper end of the first half cylinder is formed with a first convex edge extending outward; the second endoscope clamping petal comprises a second half cylinder; an upper end of the second half cylinder is formed with a second convex edge extending outward; the first half cylinder and the second half cylinder constitute a complete cylinder, and a central hole of the cylinder is used for clamping an intracerebral endoscope.

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