Surgical guide device for skull base approach

Abstract

The present invention relates to a surgical guide device for skull base approach, comprising: an inner opening part provided at one end of a hollow cylinder having both ends open, so as to be inserted into a subject into which a surgical instrument is to be inserted; an outer opening part provided at the other end of the hollow cylinder having both ends open, so as to be positioned outside the subject into which the surgical instrument is to be inserted, such that the surgical instrument is inserted therethrough; and a connection part by which the inner opening part communicates with and is connected to the outer opening part, wherein a slit cut to a predetermined length from the free end of the outer opening part toward the connection part is formed in one region of the outer periphery of the outer opening part.

Description

Surgical guide device for skull base access

[0001] The present invention relates to a surgical guide device for accessing the skull base, and more specifically, to a surgical guide device for accessing the skull base that maintains a passage to allow access to the nasal cavity or orbit during neurosurgical skull base surgery using an endoscope.

[0002] The recent trend in surgery is shifting toward minimally invasive surgical methods. Neurosurgical skull base surgery is also gradually evolving from traditional craniotomy to endoscopic surgery.

[0003] Traditionally, the nasal approach through the nasal cavity was primarily used.

[0004] The aforementioned transnasal approach is a commonly performed method in skull base surgery, involving access to the skull base through both nostrils. It is generally used in surgeries for pituitary adenomas, craniopharyngomas, and anterior cranial meningiomas.

[0005] However, with the transnasal approach, if there is severe damage to the nasal mucosa, surgery may become difficult and time-consuming due to mucosal bleeding during the operation; securing space to access the inside of the skull may be difficult; and there is a higher risk of olfactory impairment and infection after surgery.

[0006] Meanwhile, a new surgical method accessing the eye through the orbit has recently been developed and is being applied by some researchers; currently, many surgeons worldwide are showing interest and attempting this technique. As numerous papers are published, its clinical value is also rising.

[0007] The trans-orbital approach involves making an incision in the eyelid and retracting the orbital structures by about 5 to 10 mm to create space between the eyeball and the orbit, and accessing the anterior or middle cranial fossa; it is used for brain surgeries such as trigeminal schwannomas or cavernous sinus meningiomas.

[0008] If this transorbital approach is performed without a separate guide device, damage to the orbital periosteum surrounding the eyeball can lead to damage to the eyeball, extraocular muscles, and surrounding nerves, which can cause various complications such as decreased vision and diplopia.

[0009] Therefore, there is a need for the development of technology that can prevent surgical injuries or sequelae by reducing damage to the nasal mucosa or orbital periosteum during endoscopic surgery accessing the nasal cavity or orbit.

[0010] The objective of the present invention is to solve the aforementioned problems by providing a surgical guide device for cranial base access that can minimize damage to the nasal mucosa or orbital periosteum and reduce unnecessary pressure during endoscopic surgery accessed through the nasal cavity or orbit.

[0011] Another objective of the present invention is to provide a surgical guide device for skull base access that can prevent the occurrence of sequelae caused by damage to the nasal mucosa or orbital periosteum during endoscopic surgery.

[0012] The problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by a person skilled in the art from the description below.

[0013] The objective of the present invention can be achieved by a surgical guide device for accessing the skull base, comprising: an inner opening provided at one end of a hollow cylinder with both ends open and inserted into the interior of an object to be inserted; an outer opening provided at the other end of a hollow cylinder with both ends open and located outside the object to be inserted and into which a surgical instrument is inserted; and a connecting part that communicates with and connects the inner opening and the outer opening, wherein a slit is formed in a region of the outer circumference of the outer opening, cut to a certain length from the free end of the outer opening toward the connecting part.

[0014] Thus, according to the surgical guide device for accessing the skull base of the present invention, the effect of securing a passage for inserting a surgical instrument and maintaining it in a constant shape during endoscopic surgery through an insertion target such as the nasal cavity, orbit, or cerebral cortex is obtained.

[0015] Accordingly, according to the present invention, when applied to skull base surgery using an endoscope, the effect of sufficiently securing internal space to allow surgical instruments to easily enter and exit is obtained.

[0016] Accordingly, according to the present invention, during endoscopic surgery accessed through the nasal cavity or orbit, damage to the nasal mucosa or orbital periosteum can be minimized and unnecessary pressure can be reduced, and the occurrence of sequelae caused by damage to the nasal mucosa or orbital periosteum can be prevented in advance. In addition, in the case of cutting instruments used during surgery, heat may be generated during the surgery, which can cause burns to the nostrils or around the eyelids, and this invention also has the effect of preventing such burns.

[0017] The effects of the present invention are not limited to those mentioned above, and other unmentioned effects will be clearly understood by a person skilled in the art from the description below.

[0018] FIG. 1 is a perspective view of a surgical guide device for accessing the skull base according to one embodiment of the present invention.

[0019] FIG. 2 is a right side view of FIG. 1,

[0020] Fig. 3 is a left side view of Fig. 1.

[0021] The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the present invention, and the present invention is defined only by the scope of the claims.

[0022] The terms used in this specification are for describing embodiments and are not intended to limit the invention. In this specification, the singular form includes the plural form unless specifically stated otherwise in the text. The terms "comprises" and / or "comprising" used in this specification do not exclude the presence or addition of one or more other components in addition to the components mentioned. Throughout the specification, the same reference numerals refer to the same components, and "and / or" includes each of the mentioned components and all combinations of one or more. Although terms such as "first," "second," etc., are used to describe various components, these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, the first component mentioned below may be the second component within the technical scope of the invention.

[0023] Furthermore, hereinafter, terms indicating directions such as 'left', 'right', 'forward', 'rear', 'upward', and 'downward' are defined as indicating the respective directions based on the state depicted in each drawing.

[0024] Unless otherwise defined, all terms used herein (including technical and scientific terms) may be used in a meaning commonly understood by those skilled in the art to which the present invention pertains. Furthermore, terms defined in commonly used dictionaries are not to be interpreted ideally or excessively unless explicitly and specifically defined otherwise.

[0025] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0026] Before proceeding with the explanation, this embodiment describes in detail the configuration of a surgical guide device for accessing the skull base by inserting an endoscope through the orbit to operate on the interior of the skull base. Of course, it should be noted that the present invention is not necessarily limited thereto and can be applied to various minimally invasive surgical methods for performing endoscopic surgery through the nasal cavity, cerebral cortex, etc.

[0027] FIG. 1 is a perspective view of a surgical guide device for accessing the skull base according to one embodiment of the present invention, FIG. 2 is a right side view of FIG. 1, and FIG. 3 is a left side view of FIG. 1.

[0028] As illustrated in these drawings, a surgical guide device (100) for accessing the skull base according to one embodiment of the present invention is formed in a hollow cylindrical shape with both ends open, and includes an inner opening (110) provided at one end of the two ends and inserted into the interior of the orbit, an outer opening (130) provided at the other end and located outside the orbit to which a surgical instrument is inserted, and a connecting part (150) connecting the inner opening (110) and the outer opening (130).

[0029] Meanwhile, in a surgical guide device (100) for accessing the skull base according to one embodiment of the present invention, an inner opening (110), a connecting part (150), and an outer opening (130) are arranged coaxially.

[0030] The cross-sectional area of ​​the outer opening (130) can be set larger than the cross-sectional area of ​​the inner opening (110).

[0031] The inner opening (110) may be formed tapered so that its diameter decreases as it goes from the open left end, for example, from the free end of the inner opening (110) to the right end connected to the connecting part (150).

[0032] The outer opening (130) may be formed tapered so that its diameter decreases as it goes from the open right end, for example, from the free end of the outer opening (130) to the left end connected to the connecting part (150).

[0033] The connecting portion (150) can be formed tapered so that its diameter decreases as it goes from the right end connected to the outer opening (130) to the left end connected to the inner opening (110).

[0034] Accordingly, in the surgical guide device (100) for accessing the skull base according to one embodiment of the present invention, the cross-sectional area of ​​the connecting region (155) where the inner opening (110) and the connecting part (150) are connected is the smallest.

[0035] And, in the surgical guide device (100) for accessing the skull base, the cross-sectional area increases as it moves from the connecting area where the connecting part (150) and the outer opening (100) are connected toward the right end of the outer opening (130), and the cross-sectional area becomes maximum at the right end of the outer opening (130).

[0036] That is, in the surgical guide device (100) for accessing the skull base according to one embodiment of the present invention, the connecting area (155) having the minimum cross-sectional area is formed in a concave shape, and the surgical guide device (100) for accessing the skull base can be inserted into an insertion target such as an orbit, nasal cavity, or cerebral cortex using the connecting area.

[0037] In addition, the inner opening (110) and the outer opening (130) and the connecting part (150) can be formed with a circular cross-sectional shape.

[0038] Here, although not illustrated, the inner opening (110) and the outer opening (130) and the connecting part (150) may be formed with an elliptical cross-sectional shape.

[0039] In addition, on one side of the outer surface of the outer opening (130) of the surgical guide device (100) for accessing the skull base according to one embodiment of the present invention, a slit (155) is formed that is cut for a certain length from the open free end of the outer opening (130), for example, the right end of the outer opening (130), toward the connecting part (150).

[0040] The slit (155) is formed by tapering the cross-sectional area gradually decreasing along the longitudinal direction of the outer opening (130) from the free end of the outer opening (130) toward the left end connected to the connecting part (150), for example, by forming a ‘V’ cross-sectional shape.

[0041] In this way, by forming a slit (135) in one area of ​​the outer circumference of the outer opening (130), when a surgical guide device (100) for accessing the skull base is inserted through the nasal cavity of a small nose, the outer opening (130) is overlapped by the slit (135) and can be inserted in a closed state, and after being inserted through the nasal cavity, the outer opening (130) is unfolded again and occupies space, so that it can be easily inserted to accommodate nasal cavities of various sizes.

[0042] Here, the inner opening (110), the outer opening (130), and the connecting part (150) constituting the surgical guide device (100) for accessing the skull base according to one embodiment of the present invention may each be manufactured by weaving a material capable of elastic deformation, such as polyurethane (PU) or polyethylene (PE), in a braiding or weaving manner.

[0043] In addition, although not illustrated, the surface of the surgical guide device (100) for accessing the skull base according to one embodiment of the present invention is formed in a mesh shape having a plurality of through holes, and a coating layer may be formed on the surface of the surgical guide device (100) for accessing the skull base to block blood from flowing in from a site where bleeding has occurred through the through holes.

[0044] In addition, a surgical guide device (100) for accessing the skull base according to one embodiment of the present invention may be manufactured using a biocompatibility material that satisfies human safety standards.

[0045] In addition, the surgical guide device (100) for accessing the skull base according to one embodiment of the present invention may be manufactured in a dark color, such as black or gray, which has a lower reflectivity than white, so as to reduce light reflection during the process of inserting the endoscope, thereby preventing obstruction of the operator's field of vision due to light reflection during the process of inserting the endoscope.

[0046] Accordingly, the surgical guide device (100) for accessing the skull base according to one embodiment of the present invention can be easily inserted into the orbit with the outer opening (130) closed by the slit (135), and after being inserted through the orbit, the outer opening (130) is opened again and occupies space, so the inner opening (110) secures space to perform surgery inside the orbit by pulling the structures inside the orbit with appropriate pressure, and the outer opening (130) secures and maintains a passage so that the surgical instrument can be inserted more easily, thereby minimizing damage to the nasal mucosa or orbital periosteum and reducing unnecessary pressure, and preventing the occurrence of sequelae caused by damage to the nasal mucosa or orbital periosteum.

[0047] Thus, according to the present invention, by using a surgical guide device for accessing the skull base, a passage for inserting a surgical instrument during endoscopic surgery through an insertion target such as the nasal cavity, orbit, or cerebral cortex can be secured and maintained in a constant shape.

[0048] Furthermore, when applied to endoscopic skull base surgery, it minimizes damage to the nasal mucosa or orbital periosteum and reduces unnecessary pressure during the endoscopic surgical process accessed through the nasal cavity or orbit, thereby reducing complications that may arise from such damage and allowing the surgery to proceed more smoothly.

[0049] Although the invention made by the inventors has been specifically described according to the above embodiments, the present invention is not limited to the above embodiments and can be modified in various ways without departing from the gist thereof.

[0050] That is, in the above embodiment, the configuration of a surgical guide device for accessing the skull base to operate on the interior of the skull base by inserting an endoscope through the orbit was described; however, the present invention can be modified to be applicable to various minimally invasive surgical methods for performing endoscopic surgery not only through the orbit but also through the nasal cavity or cerebral cortex.

Claims

1. An inner opening provided at one end of a hollow cylinder with both ends open, which is inserted into the interior of an object to be inserted: An outer opening provided at the other end of a hollow cylinder with both ends open, positioned outside the object to be inserted, into which a surgical instrument is inserted; and It includes a connecting part that communicates and connects the inner opening and the outer opening. A surgical guide device for accessing the skull base, characterized in that a slit is formed in a certain length in a region of the outer circumference of the outer opening, extending from the free end of the outer opening toward the connecting part.

2. In Paragraph 1, A surgical guide device for accessing the skull base, characterized in that the slit is formed by tapering the cross-sectional area along the longitudinal direction of the outer opening from the free end of the outer opening toward the connecting part.

3. In Paragraph 1, A surgical guide device for accessing the skull base, characterized in that the inner opening, the outer opening, and the connecting portion are arranged coaxially.

4. In Paragraph 1, The inner opening, the outer opening, and the connecting portion each have a circular cross-sectional shape in the transverse direction relative to the longitudinal direction of the surgical guide device for accessing the skull base. A surgical guide device for accessing the skull base, characterized in that the diameter of the free end of the outer opening is set to be larger than the diameter of the free end of the inner opening.

5. In Paragraph 1, The inner opening is formed to be tapered such that its diameter decreases from one open end to the other end connected to the connecting part, and The above outer opening is formed to be tapered such that its diameter decreases from one open end to the other end connected to the connecting part, The above connecting portion is formed to be tapered such that its diameter decreases from one end connected to the outer opening to the other end connected to the inner opening, and A surgical guide device for accessing the skull base, characterized in that the cross-sectional area of ​​the connection region where the inner opening and the connection part are connected is formed to be the smallest.

6. In Paragraph 1, The surgical guide device for accessing the skull base described above is manufactured in a mesh shape with multiple through holes formed on the surface by braiding or weaving a material capable of elastic deformation, and A surgical guide device for accessing the skull base, characterized in that a coating layer is formed on the surface of the surgical guide device for accessing the skull base to block blood from flowing in from the site of bleeding through the through hole.

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