A neuroendoscope assembly

Abstract

The application discloses a neuroendoscope assembly which comprises a rigid outer sleeve, a flexible endoscope and a locking sleeve, wherein the rigid outer sleeve comprises a connecting part and a rigid pipe body; the front end of the connecting part is provided with a first connecting head for fixing the rigid pipe body, the tail end is provided with a clamping part and a limiting part; the space surrounded by the clamping part and the limiting part forms a plug-in cavity; the flexible endoscope comprises a plug-in part and a flexible pipe; the front end of the plug-in part is provided with a second connecting head for fixing the flexible pipe; the second connecting head is matched with the plug-in cavity, and the outer wall of the second connecting head is provided with a stop block; the locking sleeve is rotatably installed on the clamping part, the inner wall of the locking sleeve is provided with a stop opening at the bottom for abutting against the connecting part, and the top is provided with a sliding groove and a locking block; the clamping part is clamped in the sliding groove. The neuroendoscope assembly provided by the application can realize accurate alignment during the plug-in process, and can also easily realize the fixation and separation of the flexible endoscope and the rigid outer sleeve, thereby reducing the damage to intracranial tissues.

Description

Technical Field

[0001] This invention relates to the field of medical instrument technology, specifically to a neuroendoscopic component. Background Technology

[0002] Neuroendoscopic techniques are an important component of minimally invasive neurosurgery. They expand the surgeon's field of vision, allowing for more precise procedures and better treatment outcomes. Because cranial punctures are required during surgery, and a standard flexible endoscope alone cannot meet the needs, a rigid sheath is added. During the procedure, the flexible endoscope is connected to the rigid sheath and inserted together, satisfying the puncture requirement while allowing real-time observation of the intracranial environment to pinpoint the exact location of lesions.

[0003] Conventional endoscopic optical lenses have two viewing angles: 0° and 30°. To ensure image accuracy and stability during puncture, the flexible endoscope and rigid outer sheath need to be tightly fixed together. In particular, the optical lens of the endoscope needs to be tightly fitted to the transparent cap, and it also needs to be easily separated after insertion into the cranium. However, existing endoscopic components are difficult to insert, and a lot of force is required to separate the flexible endoscope from the rigid outer sheath, which can easily damage intracranial tissues. Especially in the 30° endoscopic component, it is difficult to align during insertion, and it is not possible to quickly and tightly fit the optical lens of the endoscope to the transparent cap, which greatly affects the efficiency of the operation. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a neuroendoscopic assembly, including a flexible endoscope and a rigid outer sheath, which can achieve precise alignment during insertion, ensure that the optical lens of the endoscope and the transparent cap at the front end of the rigid outer sheath fit tightly, and can also easily fix and separate the flexible endoscope and the rigid outer sheath, reducing damage to intracranial tissues.

[0005] This invention is achieved through the following technical solutions:

[0006] A neuroendoscopic assembly includes a rigid outer tube, a flexible endoscope, and a locking sleeve. The rigid outer tube includes a connecting portion and a rigid tube body. The connecting portion has a circular tubular structure with a first connector at its front end for fixing the rigid tube body and a locking portion and a limiting portion at its rear end. The locking portion and the limiting portion are arranged circumferentially along the inner side of the connecting portion, and the space surrounding the locking portion and the limiting portion forms an insertion cavity. The flexible endoscope includes an insertion portion and a flexible catheter. The insertion portion has a circular tubular structure with a second connector at its front end for fixing the flexible catheter. The second connector is adapted to the insertion cavity, and a stop block is provided on the outer wall of the second connector. The locking sleeve is rotatably mounted on the locking portion. The bottom of the inner wall of the locking sleeve has a stop adapted to the connecting portion, and the top has a sliding groove with an arc-shaped structure and a locking block. The locking block is fixed to the side of the sliding groove. The locking portion is engaged in the sliding groove. The limiting portion is used to restrict the rotation of the stop block, and the locking block... Used to limit the translation of the stop block; In this technical solution, the neuroendoscopic assembly includes a rigid outer tube and a flexible endoscope. During the insertion of the flexible endoscope into the rigid outer tube, the limiting part can accurately guide and position the installation position of the flexible endoscope, so that the optical lens of the endoscope is tightly fitted with the transparent cap at the front end of the rigid outer tube. After the second connector of the flexible endoscope is inserted into the insertion cavity of the rigid outer tube, the two are fixedly connected together by a locking sleeve rotatably connected to the connector of the rigid outer tube. They are inserted together during surgery, which not only meets the puncture needs during surgery, but also allows real-time observation of the intracranial condition during puncture to determine the specific location of the lesion. When separating or replacing the flexible endoscope, it is not necessary to rotate the rigid tube; only the locking sleeve needs to be rotated to quickly detach and fix the rigid outer tube and the flexible endoscope, so as to avoid damage to the intracranial tissues. The whole operation process is fast and convenient, effectively reducing the operation time.

[0007] Preferably, the tail end of the connector is provided with a receiving cavity for mounting an optical circuit board, and a cap is provided over the receiving cavity, with an anti-slip groove on the cap. In this technical solution, the receiving cavity places the optical circuit board, which was originally placed on the head of the flexible catheter, on the connector, saving more space for the metal tube head at the front end of the flexible catheter, further reducing the volume of the metal tube head, thereby reducing the diameter required for the flexible catheter of the endoscope and effectively enhancing the applicability of the endoscope. The anti-slip groove can increase the friction during contact, making it easier for doctors to operate.

[0008] Preferably, the snap-fit ​​part has an arc-shaped strip structure, and the upper end of the snap-fit ​​part is provided with a snap claw; the snap claw snaps into the sliding groove, and the outer edge of the upper end of the snap claw is provided with a bevel; in this technical solution, the snap-fit ​​part has an arc-shaped strip structure, which can form an arc on both the inner and outer sides of the snap-fit ​​part to facilitate the rotation of the locking sleeve, and the locking sleeve can be rotatably connected to the snap-fit ​​part under the limiting action of the snap claw and the stop; the bevel can reduce the top area of ​​the snap claw and reduce the opening width at the upper end of the snap-fit ​​part, thereby improving the alignment tolerance rate of the connecting part inserted into the locking sleeve and improving the assembly efficiency.

[0009] Preferably, the limiting part has an arc-shaped strip structure with a limiting groove in the middle of the upper end; the stop block is adapted to the limiting groove, and both the upper and lower ends of the stop block have an arc-shaped structure; in this technical solution, the limiting part has an arc-shaped strip structure, which can form an arc on both the inner and outer sides of the snap-fit ​​part to facilitate the rotation of the locking sleeve; the limiting groove can limit the installation angle of the second connecting part, so that the optical lens of the endoscope and the transparent cap at the front end of the rigid outer sleeve fit tightly; the arc-shaped structure can not only reduce the local stress concentration phenomenon of the stop block and enhance the structural strength of the stop block, but also make the operation of the stop block smoother when it is inserted into the limiting groove or locked by the locking block.

[0010] Preferably, the two sides of the opening of the limiting groove are arranged obliquely; the lower end of the locking block is provided with a conical groove; the top of the limiting part can be engaged in the conical groove; in this technical solution, the two sides of the opening of the limiting groove are arranged obliquely, which makes the upper end of the limiting part have a conical opening structure, which facilitates the guidance of the stop block when the second connector is inserted into the insertion cavity, so that it can smoothly enter the limiting groove, improve the fault tolerance of docking, and make the optical lens of the endoscope and the transparent cap at the front end of the rigid outer tube automatically align and fit tightly. Moreover, this structure makes the top of the limiting part present a concave structure with high sides and low middle, and its top can be engaged in the conical groove. When the locking sleeve is in the unlocked position, it can also position the locking sleeve so that it will not rotate on its own, which is convenient for doctors to operate.

[0011] Preferably, the inner wall of the first connector is provided with a first positioning strip for defining the installation position of the rigid tube; the inner wall of the second connector is provided with a second positioning strip for defining the installation position of the rigid tube. In this technical solution, the first positioning strip can define the installation angle of the rigid tube, which facilitates the assembly and processing of the rigid outer tube. Similarly, the second positioning strip can define the installation angle of the flexible catheter, which facilitates the assembly and processing of the flexible endoscope.

[0012] Preferably, the inner wall of the locking sleeve is provided with a guide groove; the guide groove is located below the slide groove, and the upper edge of the guide groove is arranged obliquely; in this technical solution, the guide groove can clearly define the insertion position of the snap-fit ​​part, which is convenient for operation, reduces the assembly difficulty, and can reduce the path length of the snap-fit ​​part under pressure, reduce the strain time, and improve the service life of the snap-fit ​​part.

[0013] Preferably, the locking parts are symmetrically arranged on the connecting parts; the height of the limiting part is less than the height of the locking parts, and it is located between the two locking parts; in this technical solution, there are two locking parts, symmetrically arranged on the connecting parts, which can make the locking points of the locking sleeve more evenly distributed, thereby enhancing the reliability of the connection between the locking sleeve and the connecting parts; the height of the limiting part is less than the height of the locking parts, which allows the locking block to have space to rotate above the limiting part, so as to achieve the function of fixing, locking or separating.

[0014] Preferably, the flexible conduit has a metal tube head at its front end, and the front end of the metal tube head is arranged at an angle; the front end of the rigid tube body is also arranged at an angle to match the metal tube head, and is provided with a transparent cap; in this technical solution, the metal tube head is used to install optical components, such as optical lenses, LED light sources, etc., and is arranged at an angle, mainly to meet the needs of endoscopes with a 30° viewing angle or other special angles.

[0015] Preferably, the end of the second connector is provided with a rubber pad; in this technical solution, the rubber pad has a certain elasticity, which can alleviate the deformation of the locking block when locking the fixing block, and provide elasticity, so that the rigid outer sleeve is more tightly fixed to the flexible endoscope.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The neuroendoscopic assembly includes a rigid outer tube and a flexible endoscope, which not only meets the puncture needs during surgery, but also allows for real-time observation of the intracranial condition during the puncture process, determining the specific location of the lesion; 2. During the insertion of the flexible endoscope into the rigid outer tube, the neuroendoscopic assembly can precisely guide and position the installation position of the flexible endoscope, ensuring a tight fit between the optical lens of the endoscope and the transparent cap at the front end of the rigid outer tube, reducing the difficulty of aligning the flexible endoscope and the rigid outer tube, and improving operational efficiency; 3. When separating or replacing the flexible endoscope, the neuroendoscopic assembly does not require rotating the rigid tube body; simply rotating the locking sleeve allows for quick detachment and fixation of the rigid outer tube and the flexible endoscope, preventing damage to intracranial tissues. The entire operation is fast and convenient, effectively reducing surgical time; 4. The neuroendoscopic assembly has a high degree of integration, and its overall structure is compact, simple, and aesthetically pleasing, making it convenient for doctors to operate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the locking structure of a neuroendoscopic assembly as described in Embodiment 1;

[0018] Figure 2 This is a schematic diagram of the snap-fit ​​structure of a neuroendoscopic assembly as described in Embodiment 1;

[0019] Figure 3 This is a schematic diagram of the connecting part described in Embodiment 1;

[0020] Figure 4 This is a schematic diagram of the connector structure described in Embodiment 1;

[0021] Figure 5 This is a schematic diagram of the locking sleeve described in Embodiment 1;

[0022] Figure 6 This is a schematic diagram of the cap structure described in Embodiment 1;

[0023] Figure 7 This is a schematic diagram of the structure in Embodiment 1 where the stop block is inserted into the limiting groove;

[0024] Figure 8 This is a schematic diagram showing the positional relationship between the locking sleeve and the connecting part in the locked state as described in Embodiment 1;

[0025] Figure 9 This is a schematic diagram showing the positional relationship between the locking block and the limiting block in the locked state as described in Embodiment 1;

[0026] Figure 10 This is a schematic diagram showing the positional relationship between the locking sleeve and the connecting part in the open state as described in Embodiment 1;

[0027] Figure 11 This is a schematic diagram showing the positional relationship between the locking block and the limiting block in the open state as described in Embodiment 1;

[0028] Figure 12 This is a schematic diagram of the installation structure of the first connector and the rigid tube in Embodiment 1;

[0029] Figure 13 This is a schematic diagram of the installation structure of the second connector and the flexible conduit in Embodiment 1;

[0030] In the diagram: 1. Rigid outer tube; 11. Connecting part; 111. First connector; 112. Snap-fit ​​part; 1121. Claw; 1122. Bevel; 113. Limiting part; 1131. Limiting groove; 114. First positioning strip; 12. Rigid tube body; 121. Transparent cap; 13. Insertion cavity; 2. Locking sleeve; 21. Slide groove; 22. Locking block; 221. Conical groove; 23. Guide groove; 24. Stop; 3. Flexible endoscope; 31. Insertion part; 311. Second connector; 3111. Stop block; 3112. Second positioning strip; 32. Flexible conduit; 321. Metal tube head; 33. Receiving cavity; 34. Mounting groove; 4. Cap; 41. Anti-slip groove; 5. Optical component; 6. Rubber pad. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Example 1

[0033] like Figures 1-13As shown, a neuroendoscopic assembly includes a rigid outer sheath 1, a flexible endoscope 3, and a locking sleeve 2. The rigid outer sheath 1 includes a connecting portion 11 and a rigid tube body 12. The connecting portion 11 has a circular tubular structure and is made of plastic. The front end of the connecting portion 11 has a first connector 111 for fixing the rigid tube body 12, and the rear end has a locking portion 112 and a limiting portion 113. There are two locking portions 112, which are symmetrically arranged at 180° on the connecting portion 11, so that the locking points of the locking sleeve are more evenly distributed, thereby enhancing the reliability of the connection between the locking sleeve and the connecting portion. The limiting portion 113 has a small height. The locking block is positioned between two locking parts 112 at the height of the locking part, allowing the locking block to rotate above the limiting part to achieve the function of fixing or separating. The locking part 112 and the limiting part 113 are arranged circumferentially along the inner side of the connecting part 11, and the space surrounding the locking part 112 and the limiting part 113 forms a circular insertion cavity 13. The rigid tube body 12 can be made of stainless steel. The flexible endoscope 3 includes an insertion part 31 and a flexible conduit 32. The insertion part 31 has a circular tubular structure and is made of plastic. The front end of the insertion part 31 is provided with a second connector 3 for fixing the flexible conduit 32. 11; The second connector 311 is adapted to the insertion cavity 13, and a stop block 3111 is provided on the outer wall of the second connector 311; The locking sleeve 2 is rotatably mounted on the connecting part 11, and the bottom of the inner wall of the locking sleeve 2 is provided with a stop 24 adapted to the connecting part, and the top is provided with an arc-shaped slide groove 21 and a locking block 22; The arc of the slide groove 21 is 45°, and the locking block 22 is set on the edge of one of the slide grooves 21. When the locking sleeve 2 is rotated, the slide groove 21 can limit the rotation angle of the locking sleeve 2; The snap-fit ​​part 112 snaps into the slide groove 21; The limiting part 113 is used to limit the stop block 31 The locking block 22 is used to restrict the axial translation of the stop block 3111. The front end of the rigid tube 12 is arranged at a 30° angle and is provided with a transparent cap 121. The front end of the flexible conduit 32 is provided with a metal tube head 321 for installing optical components, such as cameras, LEDs, etc., and the front end of the metal tube head is arranged at a 30° angle. The end of the second connector 311 is provided with a rubber pad 6. The rubber pad 6 has a certain elasticity, which can alleviate the deformation of the locking block 22 when fixing the stop block 3111 and provide elasticity, so that the rigid outer tube and the flexible endoscope are fixed more tightly.The neuroendoscopic assembly includes a rigid outer tube 1 and a flexible endoscope 3. After the second connector 311 of the flexible endoscope 3 is inserted into the insertion cavity 13 of the rigid outer tube 1, the two are fixed together by a locking sleeve 2 rotatably connected to the connecting part of the rigid outer tube 1. They are inserted together during surgery, satisfying the puncture needs during the procedure and allowing real-time observation of the intracranial situation to determine the specific location of the lesion. When separating or replacing the flexible endoscope, there is no need to rotate the rigid tube; simply rotating the locking sleeve allows for quick detachment and fixation of the rigid outer tube and the flexible endoscope, preventing damage to intracranial tissues. The entire operation is fast and convenient, effectively reducing surgical time.

[0034] Preferably, the tail of the insertion part 31 is provided with a receiving cavity 33 for mounting an optical circuit board. A cap 4 is fitted over the receiving cavity 33, and the cap 4 has an anti-slip groove 41. The bottom of the receiving cavity 33 has a mounting groove 34. The cap is fixed to the outside of the receiving cavity 33 by adhesive bonding, forming a closed space to protect the connecting wires and circuit board. The anti-slip groove 41 increases friction during contact, facilitating operation by the doctor. The locking part 112 has an arc-shaped strip structure, and a claw 1121 is provided at its upper end. The claw 1121 is movably locked in the sliding groove 21. The upper outer edge of the 1 component has a bevel 1122, which reduces the top area of ​​the claw and the opening width of the upper part of the locking part, thereby improving the alignment tolerance of the connecting part when inserted into the locking sleeve and improving assembly efficiency. The limiting part 113 has an arc-shaped strip structure with a limiting groove 1131 in the middle of the upper end. The stop block 3111 is adapted to the limiting groove 1131. The two sides of the opening of the limiting groove 1131 are arranged obliquely, which makes the upper end of the limiting part 113 have a conical opening structure, which facilitates the guidance of the stop block 3111 when the second connector 311 is inserted into the insertion cavity 13, so that it can smoothly enter the limiting part. In the slot 1131, the fault tolerance of the docking is improved, allowing the optical lens of the endoscope to automatically align and fit tightly with the transparent cap at the front end of the rigid outer sleeve. This structure also creates a concave structure at the top of the limiting part, with higher sides and a lower center. The lower end of the locking block 22 has a conical groove 221. When the locking sleeve 2 is in the unlocked position, its top can be engaged in the conical groove 221, which also positions the locking sleeve 2, preventing it from rotating on its own and facilitating the doctor's operation. The inner wall of the locking sleeve 2 has a guide groove 23. The guide groove 23 is located below the slide groove, and its upper edge is arranged obliquely. The guide groove 23 can clearly... The insertion position of the snap-fit ​​part is clearly defined, which facilitates operation, reduces assembly difficulty, and can reduce the pressure path length of the snap-fit ​​part, reduce strain time, and improve the service life of the snap-fit ​​part; the inner wall of the first connector 111 is provided with a first positioning strip 114 for defining the installation position of the rigid tube 12; the inner wall of the second connector 311 is provided with a second positioning strip 3112 for defining the installation position of the rigid tube 12. The first positioning strip can define the installation angle of the rigid tube, which facilitates the assembly and processing of the rigid outer tube. Similarly, the second positioning strip 3112 can define the installation angle of the flexible catheter 32, which facilitates the assembly and processing of the flexible endoscope.

[0035] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A neuroendoscopic assembly, characterized in that, The device includes a rigid outer tube, a flexible endoscope, and a locking sleeve. The rigid outer tube includes a connecting portion and a rigid tube body. The connecting portion has a circular tubular structure, with a first connector at its front end for fixing the rigid tube body, and a locking portion and a limiting portion at its rear end. The locking portion and the limiting portion are arranged circumferentially along the inner side of the connecting portion, and the space surrounding the locking portion and the limiting portion forms an insertion cavity. The flexible endoscope includes an insertion portion and a flexible catheter. The insertion portion has a circular tubular structure, with a locking portion at its front end for fixing... The second connector of the flexible catheter is adapted to the insertion cavity, and a stop block is provided on the outer wall of the second connector. The locking sleeve is rotatably mounted on the snap-fit ​​part. The bottom of the inner wall of the locking sleeve is provided with a stop that is adapted to the connection part, and the top is provided with a sliding groove and a locking block in an arc shape. The locking block is fixed to the side of the sliding groove. The snap-fit ​​part is snapped into the sliding groove. There are two snap-fit ​​parts, which are symmetrically arranged on the connection part. The limiting part is provided between the two snap-fit ​​parts to limit the rotation of the stop block, and the locking block is used to limit the translation of the stop block.

2. A neuroendoscopic assembly according to claim 1, characterized in that, The tail of the connector is provided with a receiving cavity for mounting an optical circuit board. The receiving cavity is covered with a cap, and the cap is provided with an anti-slip groove.

3. A neuroendoscopic assembly according to claim 1, characterized in that, The locking part has an arc-shaped strip structure, and the upper end of the locking part is provided with a locking claw; the locking claw is locked in the sliding groove, and the outer edge of the upper end of the locking claw is provided with a bevel.

4. A neuroendoscopic assembly according to claim 1, characterized in that, The limiting part has an arc-shaped strip structure with a limiting groove in the middle of the upper end; the stop block is adapted to the limiting groove, and the upper and lower ends of the stop block are both arc-shaped.

5. A neuroendoscopic assembly according to claim 4, characterized in that, The two sides of the opening of the limiting groove are arranged obliquely; the lower end of the locking block is provided with a conical groove; the top of the limiting part is engaged in the conical groove.

6. A neuroendoscopic assembly according to claim 1, characterized in that, The inner wall of the first connector is provided with a first positioning strip for defining the installation position of the rigid tube; the inner wall of the second connector is provided with a second positioning strip for defining the installation position of the flexible conduit.

7. A neuroendoscopic assembly according to claim 1, characterized in that, The inner wall of the locking sleeve is provided with a guide groove; the guide groove is located below the slide groove, and the upper edge of the guide groove is arranged obliquely.

8. A neuroendoscopic assembly according to claim 1, characterized in that, The height of the limiting part is less than the height of the snap-fit ​​part.

9. A neuroendoscopic assembly according to claim 1, characterized in that, The flexible conduit has a metal tube head at its front end, and the front end of the metal tube head is arranged at an angle; the front end of the rigid tube body is arranged at an angle and is adapted to the metal tube head, and the front end of the rigid tube body is provided with a transparent cap.

10. A neuroendoscopic assembly according to claim 1, characterized in that, The end of the second connector is provided with a rubber pad.

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