A flexible and adjustable angle neuroendoscope and intracranial hematoma removal device

Abstract

The present invention relates to a flexible adjustable angle neuroendoscope and an intracranial hematoma removal device, which comprises an outer sheath, a first outer sleeve, a first inner sleeve, a flexible endoscope and a matching flexible adjustable angle aspirator to form the intracranial hematoma removal device. The deflection directions of the flexible endoscope and the aspirator are assisted by closing pieces matching the inner and outer sleeve structures to realize a flexible multi-angle adjustable neuroendoscope. The neuroendoscope can realize controllable multi-angle bending during surgery, and all-round observation is performed by bending at different angles to realize visualization of the intracranial hematoma. During the operation, there is no need to adjust the position and angle of the endoscope insertion part too much, thereby avoiding damage to the surrounding normal tissue structure. The flexible aspirator is used in combination to remove the hematoma, thereby completely overcoming the technical problem of residual hematoma after surgery.

Description

Technical Field

[0001] The invention relates to the technical field of surgical instruments and medical devices, and in particular to a flexible angle-adjustable neuroendoscope and an intracranial hematoma removal device. Background Art

[0002] Neuroendoscopic technology is an important part of modern minimally invasive neurosurgery and one of the main directions of neurosurgery development. This type of surgery has the characteristics of small trauma, clear field of vision, wide range, good surgical effect and few complications. With the advancement of neuroendoscopic technology, more and more hospitals have begun to use neuroendoscopy to perform intracranial hematoma removal surgery. Neuroendoscopic intracranial hematoma removal not only overcomes the damage to brain tissue caused by large bone flap craniotomy and minimally invasive hematoma removal under a microscope, but also overcomes the problems of stereotactic-assisted or surgical robot-assisted intracranial hematoma removal, which cannot be directly visualized and the expensive equipment is difficult to popularize.

[0003] The existing neuroendoscope used for intracranial hematoma removal is mainly composed of a rigid endoscope, a display, a camera system, and a light source. It has intraoperative observation and video recording functions and is used in conjunction with a conventional suction device to perform hematoma removal operations. For example, the patent application with publication number CN116616860A and titled “Minimally invasive visual shaftless spiral intracranial hematoma remover and intracranial hematoma removal method” proposes a minimally invasive visual intracranial hematoma remover, which is composed of a hematoma emptying component, a water flushing and electrocoagulation component, a neuroendoscopic interface component and a neuroendoscope, integrating direct visualization of the surgical field, hematoma crushing and suction, electrocoagulation hemostasis, and surgical field flushing, thereby minimizing damage, simplifying surgery, shortening surgery time, and reducing surgical risks; the patent application with publication number CN109821135A and titled “A visual bendable drainage tube and a visual, directional and controlled bending drainage device” proposes a visual bendable drainage tube, and provides a visual cavity for placing an endoscope and a drainage cavity for placing a drainage tube in the visual bendable drainage tube, which can accurately locate the hematoma and complete the technical solution of clearing the hematoma, and is used to solve the technical problems in the prior art that hematoma drainage surgery is not visible, the brain is easily damaged, the drainage tube is difficult to bend, and the hematoma is easily residual, thereby effectively improving the quality of surgery.

[0004] However, the existing technical solutions for removing intracranial hematomas using neuroendoscopes still have deficiencies in practical applications. Among them, neuroendoscopes made of rigid materials cannot observe all intracranial hematomas during surgery, and it is difficult to use such devices to completely remove intracranial hematomas. In addition, the direction of the intracranial hematoma remover needs to be constantly adjusted during use, resulting in a major hidden danger of causing more damage to the surrounding normal brain tissue. Solutions that use transparent visual cavities to achieve the surgical field are usually difficult to fully meet surgical requirements, and it is difficult to avoid the need to insert the existing neuroendoscope into the transparent visual cavity as an aid. However, since the bendability is achieved by using elastic materials to make drainage tubes and visual cavities, the degree of bending cannot be freely controlled, and visualization in multi-angle bendable conditions is still impossible to achieve.

[0005] It can be seen that the neuroendoscope used in intracranial hematoma removal under the existing technology cannot achieve visualization of all intracranial hematomas, so there will be residual hematomas after intracranial hematoma removal, which will affect the patient's recovery process and even endanger his life; in the actual operation, it is necessary to continuously adjust the angle of the neuroendoscope to increase the surgical field of view, which will cause trauma to the surrounding normal brain tissue. At the same time, the existing neuroendoscope needs to be additionally equipped with a display, working system, light source system, and camera system, which is costly and limits its popularity; the suction device used in clinical practice is a long metal tube with both ends open. During the operation, the hematoma suction device in some areas is difficult to reach for suction, resulting in residual hematomas, which further affects the implementation effect of intracranial hematoma removal using neuroendoscope. Summary of the invention

[0006] In order to address the deficiencies of the prior art, the present invention proposes a flexible, angle-adjustable neuroendoscope and an intracranial hematoma removal device, which realizes a flexible, multi-angle adjustable neuroendoscope that can achieve controllable multi-angle bending during surgery, and utilizes bending at different angles for all-round observation to visualize the intracranial hematoma. During the operation, there is no need to excessively adjust the position and angle of the endoscope insertion part, thereby avoiding damage to the surrounding normal tissue structure. A flexible suction device is used in combination to remove the hematoma, thereby completely overcoming the technical problem of residual hematoma after surgery.

[0007] To achieve the above objectives, the technical solutions adopted by the present invention include:

[0008] A flexible angle-adjustable neuroendoscope, characterized in that it comprises an outer sheath, a first outer sleeve, a first inner sleeve and a flexible endoscope;

[0009] The outer sheath is a hollow tube made of a rigid material that can contact human tissue, and the end of the outer sheath extending into the human tissue is set as a first opening;

[0010] The first outer sleeve is a hollow tube fixedly arranged in the outer sheath and its end exceeds the first opening. A closing piece is installed on the end of the first outer sleeve that exceeds the first opening. The closing piece is normally closed and closes the end opening of the first outer sleeve in a first working state without additional force. The inner wall of the first outer sleeve is provided with at least one group of limiting structures and at least one sliding groove relative to the limiting structure. The limiting structure includes a plurality of baffles arranged in sequence with equal or unequal intervals in the axial direction. The sliding groove is an axial channel formed by the part of the inner wall of the first outer sleeve that is not provided with a baffle.

[0011] The first inner sleeve is slidably inserted into the first outer sleeve and is provided with a second opening at the end portion facing the first opening side, a limiting protrusion is provided on the outer wall of the first inner sleeve, the limiting protrusion matches the position of the sliding groove to allow the first inner sleeve to slide axially along the sliding groove relative to the first outer sleeve, and when the limiting protrusion matches the position of the limiting structure, the contact baffle plate provides at least axial limitation to the first inner sleeve opposite to the first opening, and when the limiting protrusion matches the position of the limiting structure, the second opening of the first inner sleeve abuts against the closing piece and applies a thrust to the closing piece so that the closing piece opens to a preset angle corresponding to the baffle plate to enter a second working state;

[0012] The flexible endoscope is slidably inserted into the first inner sleeve and can freely slide axially in the first inner sleeve. When the closing piece is in the second working state, the end lens of the flexible endoscope extends from the second opening and deflects to a preset angle by contacting the closing piece.

[0013] Furthermore, the closing piece is connected and installed to the end of the first outer sleeve through a torsion spring, and the preloaded rotational force of the torsion spring drives the closing piece to normally close and seal the end opening of the first outer sleeve in the first working state without additional force.

[0014] Furthermore, a magnetic sheet is provided at the end of the first outer sleeve, and the closing sheet is kept closed by magnetic attraction of the magnetic sheet in the first working state without additional force.

[0015] Furthermore, the inner wall of the first outer sleeve is provided with two sets of mutually independent limiting structures, and at least one sliding groove is provided between the two sets of mutually independent limiting structures;

[0016] The baffles in the two sets of mutually independent limiting structures are arranged the same or differently.

[0017] Furthermore, the outer sheath and the first outer sleeve are also provided with a cleaning hole, which connects the outer sheath exterior and the hollow tube inner cavity of the first outer sleeve and accommodates liquid to reach the second opening of the first inner sleeve and the end lens of the flexible endoscope through the cleaning hole.

[0018] Furthermore, the flexible endoscope is also provided with a flexible light source.

[0019] The present invention also relates to an intracranial hematoma removal device, characterized in that the intracranial hematoma removal device comprises the above-mentioned flexible adjustable angle neuroendoscope.

[0020] Furthermore, it also includes a flexible adjustable angle suction device, and the flexible adjustable angle suction device and the above-mentioned flexible adjustable angle neuroendoscope are arranged in the same outer sheath.

[0021] Further, the flexible adjustable angle attractor comprises a second outer sleeve, a second inner sleeve and an attractor body;

[0022] The structure of the second outer sleeve is the same as that of the first outer sleeve, and the opening direction of the closing piece of the second outer sleeve is the same as that of the closing piece of the first outer sleeve;

[0023] The structure of the second inner sleeve is the same as that of the first inner sleeve;

[0024] The suction device body is slidably inserted into the second inner sleeve and can freely slide axially in the second inner sleeve. When the closing piece is in the second working state, the end lens of the flexible endoscope extends from the second opening and deflects to a preset angle by contacting the closing piece.

[0025] Furthermore, the intracranial hematoma removal device also includes a multi-function display, and the multi-function display is connected to and controls the flexible endoscope.

[0026] The beneficial effects of the present invention are:

[0027] By using the flexible adjustable angle neuroendoscope and intracranial hematoma removal device described in the present invention, a flexible multi-angle adjustable neuroendoscope is realized, which can realize controllable multi-angle bending during the operation, and utilize bending at different angles for all-round observation to realize visualization of the intracranial hematoma. During the operation, there is no need to adjust the position and angle of the insertion part of the endoscope too much, thus avoiding damage to the surrounding normal tissue structure and reducing damage to the surrounding tissue due to adjusting the angle of the endoscope. A flexible suction device is used to remove the hematoma, thus completely overcoming the technical problem of residual hematoma after surgery. The flexible adjustable angle neuroendoscope and intracranial hematoma removal device of the present invention can also be used in conjunction with a multifunctional display with integrated functions such as display, camera and workbench, reducing the external equipment of the neuroendoscope, thereby improving practicality and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the first embodiment of the flexible angle-adjustable neuroendoscope of the present invention.

[0029] Figure 2 Schematic diagram of the first outer sleeve of the first embodiment of the present invention.

[0030] Figure 3 Schematic diagram of the first inner sleeve according to the first embodiment of the present invention.

[0031] Figure 4 Schematic diagram of a first working state of the first embodiment of the present invention.

[0032] Figure 5 It is a schematic diagram of a preferred embodiment of the intracranial hematoma removal device of the present invention.

[0033] Figure 6 This is a schematic diagram of the first working state of a preferred embodiment of the intracranial hematoma removal device of the present invention.

[0034] Explanation of the accompanying figures: 1-outer sheath, 11-first opening, 12-cleaning hole, 2-first outer sleeve, 21-closing plate, 211-torsion spring, 212-magnetic plate, 22-limiting structure, 221-baffle, 23-sliding groove, 3-first inner sleeve, 31-second opening, 32-limiting protrusion, 4-flexible endoscope, 41-end lens, 5-second outer sleeve, 6-second inner sleeve, 7-suction device body. DETAILED DESCRIPTION

[0035] In order to more clearly understand the content of the present invention, it will be described in detail with reference to the drawings and embodiments.

[0036] like Figure 1 The figure shows a schematic diagram of a first embodiment of a flexible angle-adjustable neuroendoscope according to the present invention, wherein the main structure comprises an outer sheath 1 and a first outer sleeve 2 , a first inner sleeve 3 and a flexible endoscope 4 arranged inside the outer sheath 1 .

[0037] The outer sheath 1 is mainly responsible for providing the necessary rigidity and operability in the overall endoscope device. Its outer wall contacts human tissue during intraoperative operation. It is made of a rigid material that can contact human tissue, and its structural form is a hollow tube with a smooth exterior, such as a cylindrical hollow tube or an elliptical hollow tube. It is easy to understand that in order to achieve specific surgical operations, the end of the outer sheath 1 that extends into the human tissue is set as a first opening 11 to facilitate the insertion of surgical instruments for operation; the other end can be provided with handrails, grips, etc. for the operator to support and operate, and reserved for connecting necessary functional cables, negative pressure suction tubes, etc.

[0038] like Figure 2The first outer sleeve 2 is a schematic diagram of the structure of the first embodiment. The first outer sleeve 2 is also a hollow tubular structure, fixedly arranged in the outer sheath 1 and its end exceeds the first opening 11 of the outer sheath 1 (slightly exceeds the first opening 11 or does not affect the opening of the closing piece 21 and is flush with the first opening 11). In particular, the first outer sleeve 2 is provided with a closing piece 21 that can be opened and closed at the end of the side beyond the first opening 11, and the closing piece 21 is normally closed and closes the end opening of the first outer sleeve 2 in the first working state without additional force. Preferably, the closing piece 21 can be connected and installed to the end of the first outer sleeve 2 by a torsion spring 211, and the torsion spring 21 is preloaded with a rotation force to keep the closing piece 21 normally closed. At the same time, when the closing piece 21 is opened by an external force, the torsion spring 211 can keep applying an appropriate reaction force to the closing piece 21 to prevent the closing piece 21 from opening too quickly and beyond a preset amplitude, and drive the closing piece 21 to quickly close and return to the first working state after the external force is removed. Further preferably, the end of the first outer sleeve 2 can also match the magnetic attraction sheet 212 set on the closing sheet 21, so that the closing sheet 21 can maintain the closed state by providing magnetic attraction (direct contact or indirect) through the magnetic attraction sheet 212 in the first closed working state. It is easy to understand that the closing sheet 21 can be directly made of a material suitable for magnetic attraction, or a material part suitable for magnetic attraction can be added at the position matching the magnetic attraction sheet 212.

[0039] Another feature of the first outer sleeve 2 is that the inner wall is provided with at least one set of limiting structures 22 and at least one sliding groove 23 relative to the limiting structure 22, wherein the limiting structure 22 includes a plurality of baffles 221 arranged in axial order with equal or unequal spacing, which can be used to provide a certain axial limiting characteristic for the sliding displacement in the first outer sleeve 2, and the sliding groove 23 is an axial channel formed by the part of the inner wall of the first outer sleeve 2 where the baffles 221 are not provided, which can allow the first outer sleeve 2 to slide freely in the axial direction. Figure 2 In the structure of the first embodiment shown, the first outer sleeve 2 is preferably provided with two sets of mutually independent limiting structures 22 at relative positions on the inner wall, and the baffles 221 of the two sets of limiting structures 22 are arranged in different staggered ways, thereby providing a more subdivided limiting capability of the axial limiting position. At the same time, two relative sliding grooves 23 are formed between the two relatively arranged independent limiting structures 22, both of which can allow the first outer sleeve 2 to slide freely in the axial direction.

[0040] like Figure 3The figure shows a schematic diagram of the structure of the first inner sleeve 3 in the first embodiment. The first inner sleeve 3 is also a hollow tube structure. In particular, a limiting protrusion 32 is provided on the outer wall of the first inner sleeve 3. The shape and size of the limiting protrusion 32 can be adapted to the sliding groove 23 and the limiting structure 22 at the same time. When the first inner sleeve 3 is freely slidably inserted into the first outer sleeve 2, the limiting protrusion 32 can be rotated to a position adapted to the sliding groove 23 or the limiting structure 22 by rotating the first inner sleeve 3 circumferentially. When the limiting protrusion 32 rotates to the position of the matching sliding groove 23, the first inner sleeve 3 is allowed to slide axially relative to the first outer sleeve 2 along the sliding groove 23; when the limiting protrusion 32 rotates to the position of the matching limiting structure 22, the limiting protrusion 32 provides at least axial limitation to the first inner sleeve 3 opposite to the first opening 11 by contacting and abutting against the specific baffle 221, that is, it limits the first inner sleeve 3 from retracting from the end of the first outer sleeve 2, so that the second opening of the first inner sleeve 3 extends out of the end of the first outer sleeve 2 and remains at the extension length position corresponding to the preset specific baffle 221. It is easy to understand that when the second opening of the first inner sleeve 3 extends out of the end of the first outer sleeve 2, it will inevitably push the closing piece 21 to open, and through the extension length limitation, the closing piece 21 is maintained at a preset angle (corresponding to the setting of the baffle 221), thereby entering the second working state (such as Figure 1 As shown). It is easy to understand that the second working state of the flexible adjustable angle neuroendoscope of the present invention does not specifically refer to the closing piece 21 opening to a certain angle, but corresponds to the overall state of the closing piece 21 being open (non-closed). In actual use, the surgeon can choose to match the limiting protrusion 32 of the first inner sleeve 3 with any baffle 221 in the contact limiting structure 22 as needed, so as to achieve the special technical effect of changing the length of the second opening extending out of the first outer sleeve 2, thereby changing the opening angle of the closing piece 21. In actual use, the position of the baffle 221 and the spacing between the baffles 221 can be set according to the actual surgical needs. Preferably, the baffle 221 can be set to achieve a plurality of gear selections of the opening and closing angle of the closing piece 21 between 0° (closed) and 90° (fully open), such as 0°, 45°, 75°, 90°, etc.

[0041] The flexible endoscope 4 can be inserted into the first inner sleeve 3 with free axial sliding displacement, and in particular, the end lens 41 of the flexible endoscope 4 can extend from the second opening. When the closing piece 21 is opened and in the second working state, the flexible endoscope 4 extends out of the second opening and touches the closing piece 21 at a specific opening angle. Due to the softness of the flexible endoscope 4, under the force maintained by the closing piece 21 (torsion spring 211), the flexible endoscope 4 will naturally deflect with the opening angle of the closing piece 21, and the deflection angle matches the opening angle of the closing piece 21, thereby achieving the special technical effect of controllable deflection of the observation angle of the flexible endoscope 4. It should be noted that the flexible endoscope 4 described in the present invention refers to an endoscope with a soft main structure, which itself belongs to the conventional technical solution already in the field. The problem essentially solved by the present invention is to apply the originally unsuitable flexible endoscope 4 to the use scenario of the prior art using a rigid endoscope, and to cleverly use the softness of the flexible endoscope 4 to achieve controllable changes in its observation angle. A typical flexible endoscope 4 generally consists of a lens, a camera, an LED lamp (flexible light source), and a mirror body. The camera and the LED lamp are respectively connected to a data transmission line and a light source current line. When the current line is energized, the LED lamp will light up as the light source of the endoscope. There is an image processor between the lens and the camera, which can convert the image observed by the lens into an electrical signal and transmit it to a multi-function display through a data transmission line for display and recording. The data transmission line and the light source current line are respectively connected to the light source interface and the data line interface, and then connected together to the multi-function display to simultaneously complete the lighting and recording functions.

[0042] Preferably, the outer sheath 1 and the first outer sleeve 2 are also provided with a through cleaning hole 12, which can connect the outside of the outer sheath 1 and the hollow tube inner cavity of the first outer sleeve 2, and then allow liquid (such as water or a special cleaning agent) to flow from the cleaning hole 12 through the inner wall of the first inner sleeve 3 to reach the end lens 41 of the flexible endoscope 4, thereby completing the flushing operation of the end lens 41.

[0043] In actual use, the flexible adjustable angle neuroendoscope of the first embodiment is in the first working state by default, that is, the state in which the closing piece 21 is completely closed (such as Figure 4 When it is needed, the first inner sleeve 3 is rotated to make the limiting protrusion 32 match the sliding groove 23, the first inner sleeve 3 is moved to push the closing piece 21 to open to a desired angle, the first inner sleeve 3 is rotated to make the limiting protrusion 32 match the limiting structure 22 (baffle 221) to fix the position, keep the opening angle of the closing piece 21 unchanged, move and extend the flexible endoscope 4 so that the flexible endoscope 4 forms a corresponding deflection by contacting the closing piece 21, and enter the second working state to realize endoscopic observation at a specific angle (such as Figure 1 shown).

[0044] like Figure 5 and Figure 6The figure shows a schematic diagram of a preferred embodiment of the intracranial hematoma removal device of the present invention. While using the above-mentioned flexible adjustable angle neuroendoscope, intracranial hematoma observation and negative pressure suction operation are realized by matching with a flexible adjustable angle aspirator. Preferably, the main structure of the flexible adjustable angle aspirator includes a second outer sleeve 5, a second inner sleeve 6 and an aspirator body 7, and the flexible adjustable angle aspirator and the flexible adjustable angle neuroendoscope are arranged side by side in the same outer sheath 1, so that the aspirator and the endoscope can move synchronously when the operator operates the outer sheath 1 (inserting, withdrawing, rotating, etc.). Preferably, the structure of the second outer sleeve 5 is the same as that of the first outer sleeve 2, and the structure of the second inner sleeve 6 is the same as that of the first inner sleeve 3, that is, the aspirator body 7 can realize a deflection operation of a specific angle according to the same operation method of the above-mentioned flexible endoscope 4. In particular, the opening direction of the closing piece 21 of the second outer sleeve 5 is the same as the opening direction of the closing piece 21 of the first outer sleeve 2, that is, when the aspirator body 7 is deflected by the closing piece 21 of the second outer sleeve 5, the deflection direction is consistent with the deflection direction of the flexible endoscope 4 by the closing piece 21 of the first outer sleeve 2, and then when the opening angle of the closing piece 21 of the second outer sleeve 5 is also consistent with the opening angle of the closing piece 21 of the first outer sleeve 2, the extending direction and deflection angle of the aspirator body 7 and the flexible endoscope 4 are also completely consistent (such as Figure 5 As shown), it is possible to perform negative pressure suction operation on the observation position while observing with the flexible endoscope 4.

[0045] Easy to understand, Figure 5 , Figure 6 The flexible adjustable angle neuroendoscope and flexible adjustable angle aspirator shown in the figure are only schematically displayed. In actual conditions, the diameters and sizes of the two may be different, rather than having exactly the same diameter. At the same time, the size and shape of the outer sheath 1 can be selected from any smooth surface shape suitable for accommodating the flexible adjustable angle neuroendoscope and the flexible adjustable angle aspirator, so as to meet the necessary characteristics of the outer sheath 1 operation (such as rotation). On the other hand, the aspirator body 7 is made of flexible material, which is a prior art solution in the art. A negative pressure suction tube is connected to the tail end of the aspirator body 7 to realize the suction function. The negative pressure suction tube can also be removed here for flushing, thereby realizing the suction and flushing functions at multiple angles.

[0046] Preferably, the intracranial hematoma removal device also includes a multifunctional display, which can be connected to a light source line and a data transmission line, and has the functions of display, video recording, adjusting the brightness of the light source, and entering patient information. For example, a touch screen can be used as a multifunctional display. The power line and data transmission line interface of the flexible endoscope 4 are respectively designed as a USB interface and an HDMI interface, which are connected to the multifunctional display before surgery. The display also integrates a workbench function, and the software in the display is used to realize the functions of entering patient information, providing a light source and adjusting the brightness of the light source, recording the operation, and exporting the operation video, thereby greatly reducing the external equipment of the existing neuroendoscopy, while improving clinical practicality and reducing costs, which is conducive to popularizing neuroendoscopy technology to economically backward areas. Further preferably, a variable resistor can be designed between the light source line and the light source interface, and a sliding key can be set on the handle to control the resistance size and thus control the brightness of the light source.

[0047] The following is an example of a typical surgical operation process using the above-mentioned intracranial hematoma removal device to further illustrate the use and technical effects of the technical solution of the present invention.

[0048] S1. Preoperative hematoma localization: Preoperative planning is carried out based on basic information such as the location, size, depth, and shape of the hematoma as seen in the patient's preoperative cranial CT images, avoiding functional areas and important blood vessels as much as possible, and designing the best drilling point.

[0049] S2, clearing the front hematoma: first, insert the first inner sleeve 3 into the first outer sleeve 2 and slide forward to the maximum distance (open the closing piece 21 to 90°), rotate the first inner sleeve 3 to rotate the limiting protrusion 32 to the corresponding baffle 221 of the first outer sleeve 2 and fix it, insert the flexible endoscope 4 into the first inner sleeve 3, and the flexible endoscope 4 will play a similar function to the rigid neuroendoscope at this time, and can only observe the surgical area in front of the lens. In this state, enter the surgical area through the drilling point for observation, and use the aspirator body 7 to clear the hematoma with similar operations.

[0050] S3, clearing peripheral hematoma: In step S2, only the hematoma in front of the lens can be observed and cleared, and the hematoma on both sides of the lens cannot be cleared. At this time, the flexible endoscope 4 is first returned to the first inner sleeve 3, and the first inner sleeve 3 is rotated alone to rotate the limiting protrusion 32 to the corresponding sliding groove 23 and then retracted, and then rotated to the corresponding limiting structure 22 to fix the first inner sleeve 3 at the selected baffle 221. At this time, the closing piece 21 of the first outer sleeve 2 will elastically retract after losing the thrust of the first inner sleeve 3, and the closing piece 21 and the front end of the first inner sleeve 3 form a corresponding angle (for example, 75°). At this time, the flexible endoscope 4 is extended forward, and the flexible endoscope 4 will extend from the 75-degree angle under the obstruction of the closing piece 21. At this time, the endoscope can observe the hematoma area on the side of the mirror body, and the entire surgical area at this angle can be observed by rotating the outer sheath 1. Under the same operation process, the angle of the flexible aspirator is adjusted and the aspirator body 7 is extended forward, and all hematomas in the 75-90 degree area on the side of the mirror body can be cleared. By continuously adjusting the angle under the same operation process, the intracranial hematoma can be completely removed.

[0051] S4. Flushing of the surgical area: During the operation, the tail end of the flexible suction device can be temporarily disconnected from the connection between the negative pressure suction tube, and a water pipe can be connected to the suction device body 7 to inject water so as to achieve visual flushing of the hematoma.

[0052] S5, steps S2 and S3 can be repeated according to the surgical process, so as to realize the free switching of the angles of the endoscope and the aspirator during the operation, and achieve the purpose of completely removing the intracranial hematoma. Preferably, during the operation, a cleaning hole 12 can be provided between the outer sheath 1 and the first outer sleeve, and the cleaning hole 12 is connected with external saline for continuous flushing during the operation to ensure that the lens is not contaminated by blood.

[0053] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A flexible and adjustable angle neuroendoscope, characterized in that: It comprises an outer sheath, a first outer sleeve, a first inner sleeve and a flexible endoscope; The outer sheath is a hollow tube made of a rigid material that can contact human tissue, and the end of the outer sheath extending into the human tissue is set as a first opening; The first outer sleeve is a hollow tube fixedly arranged in the outer sheath and its end exceeds the first opening. A closing piece is installed on the end of the first outer sleeve that exceeds the first opening. The closing piece is normally closed and closes the end opening of the first outer sleeve in a first working state without additional force. The inner wall of the first outer sleeve is provided with at least one group of limiting structures and at least one sliding groove relative to the limiting structure. The limiting structure includes a plurality of baffles arranged in sequence with equal or unequal intervals in the axial direction. The sliding groove is an axial channel formed by the part of the inner wall of the first outer sleeve that is not provided with a baffle. The first inner sleeve is slidably inserted into the first outer sleeve and is provided with a second opening at the end portion facing the first opening side, a limiting protrusion is provided on the outer wall of the first inner sleeve, the limiting protrusion matches the position of the sliding groove to allow the first inner sleeve to slide axially along the sliding groove relative to the first outer sleeve, and when the limiting protrusion matches the position of the limiting structure, the contact baffle plate provides at least axial limitation to the first inner sleeve opposite to the first opening, and when the limiting protrusion matches the position of the limiting structure, the second opening of the first inner sleeve abuts against the closing piece and applies a thrust to the closing piece so that the closing piece opens to a preset angle corresponding to the baffle plate to enter a second working state; The flexible endoscope is slidably inserted into the first inner sleeve and can freely slide axially in the first inner sleeve. When the closing piece is in the second working state, the end lens of the flexible endoscope extends from the second opening and deflects to a preset angle by contacting the closing piece.

2. The flexible angle-adjustable neuroendoscope according to claim 1, characterized in that: The closing piece is connected and installed to the end of the first outer sleeve through a torsion spring. The preloaded rotational force of the torsion spring drives the closing piece to normally close and seal the end opening of the first outer sleeve in a first working state without additional force.

3. The flexible angle-adjustable neuroendoscope according to claim 2, characterized in that: A magnetic attraction sheet is also provided at the end of the first outer sleeve, and the closing sheet is kept closed by magnetic attraction of the magnetic attraction sheet in the first working state without additional force.

4. The flexible angle-adjustable neuroendoscope according to claim 1, characterized in that: The inner wall of the first outer sleeve is provided with two sets of mutually independent limiting structures, and at least one sliding groove is provided between the two sets of mutually independent limiting structures; The baffles in the two sets of mutually independent limiting structures are arranged the same or differently.

5. The flexible adjustable angle neuroendoscope according to claim 1, characterized in that: The outer sheath and the first outer sleeve are also provided with a cleaning hole, which connects the outer sheath exterior and the hollow tube inner cavity of the first outer sleeve and accommodates liquid that reaches the second opening of the first inner sleeve and the end lens of the flexible endoscope through the cleaning hole.

6. The flexible angle-adjustable neuroendoscope according to claim 1, characterized in that: The flexible endoscope is also provided with a flexible light source.

7. An intracranial hematoma removal device, characterized in that: The intracranial hematoma removal device comprises a flexible angle-adjustable neuroendoscope as claimed in any one of claims 1 to 6.

8. The intracranial hematoma removal device according to claim 7, characterized in that: It also includes a flexible adjustable angle suction device, which is arranged in the same outer sheath as the flexible adjustable angle neuroendoscope described in any one of claims 1 to 6.

9. The intracranial hematoma removal device according to claim 8, characterized in that: The flexible adjustable angle attractor comprises a second outer sleeve, a second inner sleeve and an attractor body; The structure of the second outer sleeve is the same as that of the first outer sleeve, and the opening direction of the closing piece of the second outer sleeve is the same as that of the closing piece of the first outer sleeve; The structure of the second inner sleeve is the same as that of the first inner sleeve; The suction device body is slidably inserted into the second inner sleeve and can freely slide axially in the second inner sleeve. When the closing piece is in the second working state, the end lens of the flexible endoscope extends from the second opening and deflects to a preset angle by contacting the closing piece.

10. The intracranial hematoma removal device according to claim 8, characterized in that: The intracranial hematoma removal device also includes a multifunctional display, which is connected to and controls the flexible endoscope.

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