Oval foramen endoscope for puncturing Meckel cavity

Abstract

The invention relates to the technical field of endoscopes, in particular to an oval foramen endoscope for puncturing a Mecke l cavity. According to the technical scheme, the puncture assembly comprises a puncture needle, a camera, a flushing pipe and an ultrasonic probe, the puncture needle is fixedly installed at the end of a grab handle, the camera is arranged at the end of the puncture needle, the flushing pipe is fixedly installed at the end of the puncture needle, and the ultrasonic probe is fixedly installed at the position, staggered from the flushing pipe, in the puncture needle. The environment in the human body is observed through the camera, the ultrasonic probe conducts ultrasonic real-time display of front tissue, foramen ovale recognition and puncture guiding, and damage to adjacent tissue caused by repeated adjustment of the position of a puncture needle is avoided. Water is injected into the flushing pipe, a certain pressure can be formed on the Mecke l cavity, the Mecke l cavity is expanded, the operation space is expanded, the impact force of water is reduced by adjusting the pressure of backwater, meanwhile, skull base venous plexus bleeding can be flushed, and interference of bleeding on the visual field is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of endoscopes, and in particular to an oval foramen endoscope for puncturing Meckel's cavity. Background Art

[0002] Meckel's cavity is a cavity formed by the dura mater in the skull, with an internal volume of about 1 ml, containing cerebrospinal fluid and the semilunar ganglion of the trigeminal nerve. Minimally invasive surgery for trigeminal neuralgia requires the placement of a microballoon or radiofrequency needle through the foramen ovale, a bony channel at the base of the skull, under the guidance of a CT or C-arm, and further extending it into the Meckel's cavity to perform microballoon compression or radiofrequency treatment on the trigeminal ganglion inside. However, since the Meckel's cavity is a soft tissue structure and does not appear under CT or C-arm, the surgeon needs to indirectly judge the position of the microballoon or radiofrequency needle based on the shape formed by the microballoon or the stimulation response of the current emitted by the radiofrequency needle to the patient, and then adjust the position of the microballoon or radiofrequency needle.

[0003] In the patent application document with announcement number CN219089209U, an endoscope is proposed. The insertion tube of the endoscope is provided with a semi-rigid part. On the basis of providing a certain rigid support performance, it also has passive and bendable capabilities, thereby making the endoscope insertion tube more suitable for use in the human body.

[0004] Due to individual differences in anatomical structure and the existence of anatomical variations, this adjustment process needs to be repeated. On the one hand, this requires patients to undergo multiple X-ray exposures, increasing the radiation dose; on the other hand, since this location is intracranial, there are many important vascular and neural structures such as the cavernous sinus, internal jugular vein, and cranial nerves. Repeated adjustments to the puncture needle position may cause damage to adjacent tissues, leading to serious consequences such as intracranial hemorrhage and nerve damage. Even after repeated adjustments, some patients still cannot insert the microballoon or radiofrequency needle into the Meckel cavity, resulting in surgical failure. Summary of the invention

[0005] The purpose of the present invention is to address the problem in the background technology that repeated adjustment of the puncture needle position leads to adjacent tissue damage and operation failure, and to propose an oval foramen endoscope for puncturing the Meckel cavity.

[0006] The technical solution of the present invention is: an oval foramen endoscope for puncturing Meckel's cavity, comprising a controller, a control line is fixedly installed on the side of the controller, and a handle is fixedly installed on the end of the control line;

[0007] The puncture assembly includes a puncture needle, a camera, a flushing tube and an ultrasonic probe. The puncture needle is fixedly mounted at the end of the handle, a camera is provided at the end of the puncture needle, a flushing tube is fixedly mounted at the end of the puncture needle, and an ultrasonic probe is fixedly mounted inside the puncture needle and at a position offset from the flushing tube.

[0008] The splash-proof assembly comprises a transmission member and a shielding plate, wherein the transmission member is arranged inside the camera, the inside of the puncture needle is slidably connected to the shielding plate covering the camera, and the transmission member is arranged at the end of the shielding plate.

[0009] Optionally, a recessed groove is formed at the end of the puncture needle, and the camera and the flushing tube are both located in the recessed groove. Two flushing tubes are provided and are symmetrical about the flushing tube axis.

[0010] Optionally, a fill light bead is fixedly mounted on the end of the puncture needle, and a plurality of the fill light beads are provided and are distributed at equal angles in a ring shape with respect to the flushing tube.

[0011] Optionally, the end of the puncture needle adopts a bendable structure, and the ultrasonic probe is fixed to the end of the controller and is offset from the inner recessed groove.

[0012] Optionally, the transmission member includes an anti-straight impact cap and a linkage rod, the anti-straight impact cap slides in the flushing pipe, the side of the anti-straight impact cap is hinged to the linkage rod, and the end of the linkage rod is hinged to the baffle plate.

[0013] Optionally, the shielding plate adopts a semicircular structure, two shielding plates are provided and are symmetrical with respect to the camera, a guide rail is provided inside the puncture needle and below the camera, and the shielding plate slides in the guide rail.

[0014] Optionally, the anti-straight impact cap adopts an inverted U-shaped structure, and the bottom surface of the anti-straight impact cap completely closes the flushing pipe.

[0015] Optionally, a reset spring coil is elastically connected between the top of the anti-straight impact cap and the puncture needle, and the reset spring coil is sleeved on the outer wall of the flushing tube.

[0016] Optionally, the curvature adjustment component includes an external fixed tube, an internal curved hose, a ring, a curvature limiting ring and a medical plastic elastic arc sheet, the internal part of the external fixed tube is fixedly installed with the internal curved hose, there is a interlayer between the external fixed tube and the internal curved hose, the ring slides in the interlayer, the end of the ring is fixedly installed with the curvature limiting ring, the outer wall of the internal curved hose is fixedly installed with the medical plastic elastic arc sheet, the curvature limiting ring slides on the surface of the medical plastic elastic arc sheet, and the end of the external fixed tube is fixedly connected to the handle.

[0017] Optionally, the medical plastic elastic arc sheet and the inner curved hose are inserted into the interior of the puncture needle, a flushing tube is also opened inside the inner curved hose, the end of the external fixed tube is fixedly connected to the flushing tube, the flushing tube inside the inner curved hose is connected to the flushing tube inside the puncture needle, and a connecting rod is fixedly installed between the ring and the curvature limiting ring.

[0018] Optionally, a slide groove is provided on the tube body of the external fixed tube, a sliding block is fixedly installed on the outer arc surface of the collar, and the sliding block slides in the slide groove.

[0019] Compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0020] The present invention uses a camera to observe the internal environment of the human body, and an ultrasonic probe to perform ultrasound to display the front tissue in real time, identify the oval foramen, guide the puncture, and avoid repeated adjustment of the puncture needle position that may cause damage to adjacent tissues and surgical failure.

[0021] Furthermore, injecting water into the flushing tube can create a certain pressure on the Meckel cavity, expand the Meckel cavity, and expand the surgical space. By adjusting the pressure of the return water, the impact force of the water can be reduced. At the same time, the bleeding of the skull base venous plexus can be flushed out to reduce the interference of bleeding on the visual field.

[0022] Furthermore, the anti-straight-impulse cap is flushed out by water flowing out of the flushing pipe, and the anti-straight-impulse cap moves and stretches the reset spring coil. At the same time, the anti-straight-impulse cap uses the linkage rod to push the reset spring coil to close the camera. The reset spring coil prevents water from splashing onto the camera and affecting the camera's recording when the flushing pipe is filled with water into the Meckel cavity. At the same time, due to the existence of the anti-straight-impulse cap, the water sprayed from the flushing pipe is prevented from directly impacting human tissue.

[0023] Furthermore, the curvature of the puncture needle can be changed by changing the position of the curvature limiting ring through a sliding ring, thereby changing the curvature of the medical plastic elastic arc sheet. The bendable design of the puncture needle allows the puncture needle to be closer to the skull base in the intracranial section after entering the foramen ovale, so that the opening direction of the endoscope faces the external opening of the Meckel cavity, which is convenient for the insertion of the endoscope and subsequent surgical materials such as microballoons or radiofrequency needles. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the overall structure of an embodiment of the present invention is given;

[0025] Figure 2 A schematic diagram of a handle structure according to an embodiment of the present invention is provided;

[0026] Figure 3 for Figure 2 A magnified schematic diagram of the camera structure of part A;

[0027] Figure 4 It is a schematic diagram of the front and cross-sectional view of the puncture needle structure;

[0028] Figure 5 It is a schematic diagram of the slider structure;

[0029] Figure 6 It is a cross-sectional schematic diagram of the external fixation tube structure.

[0030] Figure numerals: 1. controller; 2. control line; 3. handle; 4. puncture assembly; 41. puncture needle; 42. recessed groove; 43. camera; 44. flushing tube; 45. fill light bead; 46. ultrasonic probe; 5. splash-proof assembly; 51. anti-straight-impact cap; 52. linkage rod; 53. shielding plate; 54. reset spring coil; 6. curvature adjustment assembly; 61. external fixing tube; 62. internal bending hose; 63. collar; 64. connecting rod; 65. curvature limiting ring; 66. medical plastic elastic arc sheet; 67. slider; 68. slide groove. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0032] The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Example 1

[0037] This embodiment provides an endoscope for puncturing the foramen ovale of the Meckel cavity, such as Figure 1 As shown, it includes a controller 1, a control line 2 is fixedly installed on the side of the controller 1, a handle 3 is fixedly installed on the end of the control line 2, and a curvature adjustment component 6 is provided at the end of the handle 3

[0038] like Figure 2 and Figure 3 As shown, a puncture assembly 4 is fixedly installed at the end of the handle 3, including a puncture needle 41, a camera 43, a flushing tube 44 and an ultrasonic probe 46. The puncture needle 41 is fixedly installed at the end of the curvature adjustment assembly 6. The camera 43 is provided at the end of the puncture needle 41. The flushing tube 44 is fixedly installed at the end of the puncture needle 41. The ultrasonic probe 46 is fixedly installed inside the puncture needle 41 and offset from the flushing tube 44. The ultrasonic probe 46 in the puncture needle 41 performs ultrasound to display the front tissue in real time, identify the oval foramen, and guide the puncture.

[0039] The end of the puncture needle 41 is provided with an indentation groove 42, and the camera 43 and the flushing tube 44 are both located in the indentation groove 42. Two flushing tubes 44 are provided and are symmetrical about the flushing tube 44 axis. The end of the flushing tube 44 is connected to a pressure regulating flushing system, and the ultrasonic probe 46 is fixed at the end of the controller 1 and is misaligned with the indentation groove 42. Because the Meckel cavity is a potential cavity surrounded by the dura mater, the space and visual field are small. After the end of the puncture needle 41 enters the Meckel cavity, water is injected into the flushing tube 44, which can form a certain pressure on the Meckel cavity, open the Meckel cavity, expand the surgical space, and adjust the pressure of the return water to reduce the impact of the water. At the same time, the bleeding of the skull base venous plexus can be flushed to reduce the interference of bleeding on the visual field.

[0040] A fill light bead 45 is fixedly mounted on the end of the puncture needle 41. A plurality of fill light bead 45 are arranged and are distributed in a circular manner with equal angles with respect to the flushing tube 44. The fill light is provided by the fill light bead 45 so that the camera 43 can observe the internal environment of the human body.

[0041] In this embodiment, the internal environment of the human body is observed by the camera 43, and the ultrasonic probe 46 performs ultrasound to display the front tissue in real time, identify the oval foramen, guide the puncture, and inject water into the flushing tube 44, which can form a certain pressure on the Meckel cavity, open the Meckel cavity, expand the surgical space, and reduce the impact force of the water by adjusting the pressure of the return water. At the same time, the bleeding of the skull base venous plexus can be flushed to reduce the interference of bleeding on the visual field.

[0042] Example 2

[0043] Based on Example 1, this example proposes an endoscope for puncturing the Meckel cavity, such as Figure 3 and Figure 4As shown, a splash-proof assembly 5 is provided at the end of the puncture needle 41. The splash-proof assembly 5 includes a transmission member and a shielding plate 53. The transmission member is arranged inside the camera 43. The inside of the puncture needle 41 is slidably connected to the shielding plate 53 covering the camera 43, and the transmission member is arranged at the end of the shielding plate 53.

[0044] The shielding plate 53 has a semicircular structure, two shielding plates 53 are provided, and are symmetrically arranged around the camera 43. A guide rail is provided inside the puncture needle 41 and below the camera 43, and the shielding plate 53 slides in the guide rail. The shielding plate 53 is guided by the guide rail, and the two shielding plates 53 completely shield the camera 43.

[0045] The anti-straight-impulse cap 51 adopts an inverted U-shaped structure, and the bottom surface of the anti-straight-impulse cap 51 completely closes the flushing tube 44. The top of the anti-straight-impulse cap 51 is elastically connected to the puncture needle 41 with a reset spring coil 54, which is sleeved on the outer wall of the flushing tube 44. The anti-straight-impulse cap 51 is flushed out by the water flowing out of the flushing tube 44, and the anti-straight-impulse cap 51 moves and stretches the reset spring coil 54. At the same time, the anti-straight-impulse cap 51 uses the linkage rod 52 to push the reset spring coil 54 to close the camera 43. At the same time, due to the existence of the anti-straight-impulse cap 51, the water sprayed out of the flushing tube 44 is prevented from directly impacting the human tissue.

[0046] In this embodiment, the anti-straight impact cap 51 is flushed out by water flowing out of the flushing tube 44, and the anti-straight impact cap 51 moves and stretches the reset spring coil 54. At the same time, the anti-straight impact cap 51 uses the linkage rod 52 to push the reset spring coil 54 to close the camera 43. The reset spring coil 54 prevents water from splashing onto the camera 43 and affecting the camera 43 when the flushing tube 44 is filled with water into the Meckel cavity. At the same time, due to the existence of the anti-straight impact cap 51, the water sprayed out of the flushing tube 44 is prevented from directly impacting human tissue.

[0047] Example 3

[0048] Based on Example 1 or Example 2, this embodiment proposes an oval foramen endoscope for puncturing Meckel's cavity, such as Figure 5 and Figure 6 As shown, the curvature adjustment component 6 includes an external fixed tube 61, an internal curved hose 62, a ring 63, a curvature limiting ring 65 and a medical plastic elastic arc sheet 66. The internal part of the external fixed tube 61 is fixedly installed with the internal curved hose 62. There is an interlayer between the external fixed tube 61 and the internal curved hose 62. The ring 63 slides in the interlayer. The curvature limiting ring 65 is fixedly installed on the end of the ring 63. The outer wall of the internal curved hose 62 is fixedly installed with the medical plastic elastic arc sheet 66. The curvature limiting ring 65 slides on the surface of the medical plastic elastic arc sheet 66. The end of the external fixed tube 61 is fixedly connected to the handle 3.

[0049] A connecting rod 64 is fixedly installed between the collar 63 and the curvature limiting ring 65, a slide groove 68 is provided at the body of the external fixed tube 61, and a slider 67 is fixedly installed at the outer arc surface of the collar 63, and the slider 67 slides at the slide groove 68. The position of the collar 63 is changed by pushing the slider 67, thereby changing the position of the curvature limiting ring 65, and the curvature limiting ring 65 slides on the surface of the medical plastic elastic arc sheet 66, thereby changing the curvature of the medical plastic elastic arc sheet 66, and thus changing the curvature of the puncture needle 41.

[0050] The medical plastic elastic arc piece 66 and the inner curved hose 62 penetrate into the interior of the puncture needle 41, and a flushing tube 44 is also provided inside the inner curved hose 62. The end of the external fixed tube 61 is fixedly connected to the flushing tube 44, and the flushing tube 44 inside the inner curved hose 62 is connected to the flushing tube 44 inside the puncture needle 41. The end of the puncture needle 41 adopts a bendable structure, and the bendable head section can make the intracranial section of the puncture needle 41 closer to the skull base after entering the foramen ovale.

[0051] In this embodiment, the curvature limiting ring 65 is changed in position by sliding the ring 63, thereby changing the curvature of the medical plastic elastic arc sheet 66, and thus the curvature of the puncture needle 41 can be changed. The bendable design of the puncture needle 41 allows the puncture needle 41 to be closer to the skull base in the intracranial section after entering the foramen ovale, so that the endoscope opening faces the external opening of the Meckel cavity, which is convenient for the insertion of the endoscope and subsequent surgical materials such as microballoons or radiofrequency needles.

[0052] The above specific embodiments are only several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An endoscope for puncturing Meckel's cavity, characterized in that: include: A controller (1), a control line (2) being fixedly mounted on the side of the controller (1), a handle (3) being fixedly mounted on the end of the control line (2), and a curvature adjustment component (6) being provided at the end of the handle (3); The puncture assembly (4) comprises a puncture needle (41), a camera (43), a flushing tube (44) and an ultrasonic probe (46), wherein the puncture needle (41) is fixedly mounted at the end of the curvature adjustment assembly (6), the camera (43) is provided at the end of the puncture needle (41), the flushing tube (44) is fixedly mounted at the end of the puncture needle (41), and the ultrasonic probe (46) is fixedly mounted inside the puncture needle (41) and at a position offset from the flushing tube (44); The splash-proof assembly (5) comprises a transmission member and a shielding plate (53), wherein the transmission member is arranged inside the camera (43), the interior of the puncture needle (41) is slidably connected to the shielding plate (53) covering the camera (43), and the transmission member is arranged at the end of the shielding plate (53).

2. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 1, characterized in that: The end of the puncture needle (41) is provided with an indented groove (42), the camera (43) and the flushing tube (44) are both located in the indented groove (42), and two flushing tubes (44) are provided and are symmetrical about the flushing tube (44) axis.

3. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 1, characterized in that: A fill light bead (45) is fixedly mounted on the end of the puncture needle (41), and a plurality of the fill light bead (45) are provided and are distributed at equal angles in a ring with respect to the flushing tube (44).

4. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 1, characterized in that: The end of the puncture needle (41) adopts a bendable structure, and the ultrasonic probe (46) is fixed to the end of the controller (1) and is offset from the sunken groove (42).

5. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 1, characterized in that: The transmission member comprises an anti-straight impact cap (51) and a linkage rod (52); the anti-straight impact cap (51) slides in the flushing pipe (44); the side of the anti-straight impact cap (51) is hinged to the linkage rod (52); and the end of the linkage rod (52) is hinged to the shielding plate (53).

6. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 5, characterized in that: The shielding plate (53) has a semicircular structure. Two shielding plates (53) are provided and are symmetrical with respect to the camera (43). A guide rail is provided inside the puncture needle (41) and below the camera (43), and the shielding plate (53) slides in the guide rail.

7. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 6, characterized in that: The anti-straight impact cap (51) adopts an inverted U-shaped structure, the bottom surface of the anti-straight impact cap (51) completely closes the flushing tube (44), and a reset spring ring (54) is elastically connected between the top of the anti-straight impact cap (51) and the puncture needle (41), and the reset spring ring (54) is sleeved on the outer wall of the flushing tube (44).

8. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 7, characterized in that: The curvature adjustment component (6) comprises an external fixed tube (61), an internal curved hose (62), a collar (63), a curvature limiting ring (65) and a medical plastic elastic arc sheet (66); the internal part of the external fixed tube (61) is fixedly installed with the internal curved hose (62); there is an interlayer between the external fixed tube (61) and the internal curved hose (62); the collar (63) slides in the interlayer; the end of the collar (63) is fixedly installed with the curvature limiting ring (65); the outer wall of the internal curved hose (62) is fixedly installed with the medical plastic elastic arc sheet (66); the curvature limiting ring (65) slides on the surface of the medical plastic elastic arc sheet (66); and the end of the external fixed tube (61) is fixedly connected to the handle (3).

9. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 8, characterized in that: The medical plastic elastic arc sheet (66) and the inner curved hose (62) are inserted into the interior of the puncture needle (41); a flushing tube (44) is also provided inside the inner curved hose (62); the end of the outer fixed tube (61) is fixedly connected to the flushing tube (44); the flushing tube (44) inside the inner curved hose (62) is communicated with the flushing tube (44) inside the puncture needle (41); and a connecting rod (64) is fixedly installed between the collar (63) and the curvature limiting ring (65).

10. The foramen ovale endoscope for puncturing Meckel's cavity according to claim 9, characterized in that: A sliding groove (68) is provided on the tube body of the external fixed tube (61), a sliding block (67) is fixedly installed on the outer arc surface of the collar (63), and the sliding block (67) slides in the sliding groove (68).

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