Neuroendoscopy cannula with suction function

Abstract

The invention discloses a neuroendoscopy cannula with a suction function, and relates to the technical field of brain surgery operating instruments, the neuroendoscopy cannula comprises a cannula structure and a cannula core structure or an inner tube structure, the cannula structure comprises a cannula body, an annular hole is formed in the lower end of the cannula body in a penetrating mode, and a plurality of vertical holes are formed in the bottom of the cannula body in the circumferential direction of the cannula body; spiral holes are formed in the inner wall of the sleeve body from top to bottom, and the lower ends of the spiral holes are communicated with the annular hole. The inner tube structure is installed on the inner wall of the cannula body, a neuroendoscope is inserted into the inner tube structure, an operation site can be observed conveniently, blood at the position and smoke generated by bipolar coagulation and brain fluid high-temperature gasification are absorbed through the spiral hole, the annular hole and the multiple vertical holes in the bottom of the cannula body, sight is prevented from being blocked, and therefore a hemorrhagic spot can be found easily, and the operation efficiency is improved. The number of instruments (particularly aspirators) in the sleeve is reduced, surgical instruments can be inserted conveniently, and mutual influence among the instruments is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of brain surgical instruments, and in particular to a neuroendoscopic cannula with a suction function. Background Art

[0002] When neurosurgery uses a neuroendoscope to treat cerebral hemorrhage, it is necessary to use a sleeve to expand the brain tissue to leave an operating channel. When bleeding occurs, hemostasis is performed within the sleeve. During the operation, the neuroendoscope, aspirator and bipolar coagulation are used simultaneously. Due to the limited space inside the sleeve, the sleeve must have a certain depth (8-10cm), which will cause the neuroendoscope, aspirator and bipolar coagulation to affect each other during operation, making the operation impossible and the bleeding site inaccessible. Especially when active bleeding is encountered, bipolar coagulation hemostasis and high-temperature vaporization of cerebral fluid or serum will produce smoke, which pollutes and blocks the line of sight, making it difficult to find the bleeding point and affecting the progress of the surgical operation.

[0003] In the Chinese patent with the authorization announcement number CN110897661A, the specific solution is: adding a chamber partition plate in the inner sleeve to realize the construction of multiple surgical instrument insertion channels in the working channel, facilitating the independent insertion of surgical instruments and avoiding mutual interference. However, the number of instruments in the sleeve has not been reduced, and they will still interfere with each other during operation, making it impossible to maintain a clear line of sight.

[0004] In view of this, the present invention is proposed to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a neuroendoscopic cannula with suction function to solve the technical problem that when the sleeve is used to expand brain tissue, the endoscope, the suction device and the bipolar electrocoagulation in the sleeve affect each other, which is not conducive to finding the bleeding point.

[0006] The object of the present invention is to provide a neuroendoscopic cannula with a suction function, comprising: The sleeve structure includes a sleeve body, a circular hole is formed through the lower end of the sleeve body, a plurality of vertical holes are formed along the circumferential direction of the bottom of the sleeve body, the plurality of vertical holes are evenly connected with the circular hole, a spiral hole is formed on the inner wall of the sleeve body from top to bottom, the lower end of the spiral hole is connected with the circular hole, the upper end of the spiral hole is connected with the vacuum pump through an external pipe, the upper end of the sleeve body has a circular edge, one side of the circular edge has a tail, and the tail is upturned; The tube core structure or the inner tube structure can be detachably installed in the sleeve body.

[0007] Further, the tube core structure includes a tube core body, the upper end of the tube core body has a supporting truncated cone, and the lower end of the tube core body is a 50° tapered end; The supporting truncated platform is provided with a circular hole from top to bottom, and the circular hole extends to the lower end of the tube core body; The lower end of the circular hole is connected with two symmetrically arranged slots, which are arranged obliquely, and the slots penetrate the conical end at one end away from the circular hole; A screw-connected knob is arranged inside the supporting truncated table.

[0008] Furthermore, the tail portion is provided with two vertical holes from top to bottom, a clamping groove is provided between the two vertical holes, and the clamping groove runs through the tail portion.

[0009] Furthermore, the inner tube structure includes an inner tube body and a clamping piece connected to the inner tube body, the inner tube body is arranged to fit the inner wall of the sleeve body, and the clamping piece is arranged on the tail.

[0010] Furthermore, the clamping member includes a clamping block connected to the inner tube body, and the bottom of the clamping block is in contact with the upper end of the tail portion; Two convex shafts are arranged at the bottom of the clamping block, and the two convex shafts are detachably connected to the two vertical holes respectively.

[0011] Furthermore, a receiving cavity is provided in the clamping block, and through holes are provided on both the front and rear sides of the receiving cavity; A movable card joint is arranged in the through hole; A special-shaped spring is arranged in the accommodating cavity, and two ends of the special-shaped spring are respectively abutted against the inner side of the clamping joint; A through escape opening is provided at the bottom of the accommodating cavity; The inner side of the card connector extends downward; When the convex shaft extends into the vertical hole, the inner side of the clamping joint passes through the avoidance opening and the clamping groove in sequence.

[0012] Furthermore, the special-shaped spring is a double-layer 90° double-leg fixed special-shaped spring.

[0013] Furthermore, the sleeve body, the circular edge, the tail, the tube core body, the supporting frustum, the inner tube body, the clamping block, the convex shaft and the clamping joint are made of transparent polycarbonate.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects: After the cannula body is used to prop up the brain tissue, the pressure in the area is released with the help of the tube core structure, and then the tube core structure is removed. Next, the inner tube structure is installed on the inner wall of the cannula, and the neuroendoscope is accurately inserted into the inner tube structure, so that the situation of the surgical site can be clearly observed. Bipolar electrocoagulation is used to gradually remove the hematoma in the brain tissue. In this process, under the strong suction of the vacuum pump, the blood at the site, as well as the smoke and other substances generated by the high-temperature gasification of bipolar electrocoagulation and cerebral fluid can be absorbed in a timely and effective manner through the spiral holes, annular holes on the inner wall of the cannula body, and multiple vertical holes at the bottom of the cannula body, so as to avoid these substances blocking the surgical line of sight, which greatly helps doctors to accurately find the bleeding point. By cleverly setting the spiral holes, annular holes and vertical holes on the inner wall of the cannula body, the number of instruments such as the aspirator that originally needed to be placed in the sleeve is reduced, making the insertion of surgical instruments smoother and more convenient. This not only reduces the mutual interference and influence between instruments, but also further optimizes the surgical field of view, making the surgical field of view clearer, and providing a strong guarantee for the smooth progress of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are part of this application and are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation of the present invention. Obviously, the drawings described below are only some embodiments. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings: Figure 1 A schematic diagram of the assembly of the cannula structure and the core structure of the neuroendoscopic cannula provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the cannula of a neuroendoscopic cannula provided in an embodiment of the present application; Figure 3 A schematic structural diagram of a tube core structure of a neuroendoscopic cannula provided in an embodiment of the present application; Figure 4 A schematic diagram of the assembly of the sleeve structure, the clamping member and the inner tube body of the neuroendoscopic sleeve provided in an embodiment of the present application; Figure 5 A schematic structural diagram of the clamping piece of the neuroendoscopic cannula provided in an embodiment of the present application.

[0016] Figure numerals: 1. sleeve structure; 2. tube core structure; 3. snap-in; 4. knob; 5. inner tube body; 11. sleeve body; 12. spiral hole; 13. circular edge; 14. annular hole; 15. vertical hole; 16. tail; 21. tube core body; 22. supporting frustum; 23. circular hole; 24. slotted hole; 25. threaded hole; 31. snap-in block; 32. convex shaft; 33. support foot; 34. special-shaped spring; 35. snap-in joint.

[0017] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but are intended to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0018] The specific implementation modes of the present invention are further described in detail with reference to the accompanying drawings.

[0019] See also Figures 1 to 5 As shown, an embodiment of the present application provides a neuroendoscopic cannula with a suction function, including: a cannula structure 1 and a tube core structure 2 or an inner tube structure, the cannula structure includes a cannula body 11, a ring-shaped hole 14 is formed through the lower end of the cannula body 11, a plurality of vertical holes 15 are formed at the bottom of the cannula body 11 along its circumferential direction, the plurality of vertical holes 15 are evenly connected with the ring-shaped hole 14, a spiral hole 12 is formed on the inner wall of the cannula body 11 from top to bottom, the lower end of the spiral hole 12 is connected with the ring-shaped hole 14, the upper end of the spiral hole 12 is connected with a vacuum pump through an external tube, the upper end of the cannula body 11 has a circular edge 13, one side of the circular edge 13 has a tail 16, and the tail 16 is upturned, the tube core structure 2 or the inner tube structure can be detachably installed in the cannula body 11.

[0020] It should be noted that the spiral hole 12 can also be replaced by a straight hole. The spiral hole 12 can solve the problem of blockage by backwashing, and shorten the path, reducing the possibility of blockage. Although the spiral hole 12 increases the path length, when extracting through a vacuum pump, the pressure can be easily adjusted so that excessive pressure will not cause damage to the tissue. Graduation lines are set from bottom to top on the outer wall of the cannula body 11, so as to facilitate the control of the depth of the neuroendoscope.

[0021] In the above scheme, after the brain tissue is stretched open by the sleeve body 11, the pressure there is released through the tube core structure 2, and then the tube core structure 2 is taken out, the inner tube structure is installed on the inner wall of the sleeve body 11, and the neuroendoscope is inserted into the inner tube structure to facilitate observation of the surgical site, and then the hematoma in the ventricle is removed by bipolar electrocoagulation. At the same time, under the action of the vacuum pump, the blood there and the smoke generated by bipolar electrocoagulation and high-temperature gasification of cerebral fluid are absorbed through the spiral hole 12, the annular hole 14 and the multiple vertical holes 15 at the bottom of the sleeve body 11 to avoid blocking the line of sight, which is conducive to finding the bleeding point. In addition, by arranging the spiral hole 12, the annular hole 14 and the vertical hole 15 in the inner wall of the sleeve body 11, the number of instruments in the sleeve (specifically the suction device) is reduced, the insertion of surgical instruments is convenient, the mutual influence between instruments is reduced, and the surgical line of sight is also made clearer.

[0022] In some possible implementations, see Figure 1 and Figure 3As shown, the tube core structure 2 includes a tube core body 21, the upper end of the tube core body 21 has a supporting cone 22, the lower end of the tube core body 21 is a 50° conical end, the supporting cone 22 is provided with a circular hole 23 from top to bottom, and the circular hole 23 extends to the lower end of the tube core body 21, the lower end of the circular hole 23 is connected with two symmetrically arranged slots 24, the slots 24 are inclined, and the slots 24 penetrate the conical end at one end away from the circular hole 23, and a screwed knob 4 is arranged in the supporting cone 22.

[0023] It should be noted that one end of the knob 4 has a top screw, and a horizontal threaded hole 25 is opened in the supporting truncated cone 22. One end of the threaded hole 25 is connected to the circular hole 23, and the other end passes through the peripheral wall of the supporting truncated cone 22. The top screw is used to tighten the navigation needle; when retracting the brain tissue, the pressure is released through the provided circular hole 23 and the slotted hole 24, and the retraction position is determined by the navigation needle, and then the core body 21 is taken out.

[0024] In some possible implementations, see Figure 4 As shown, the tail portion 16 has two vertical holes from top to bottom, a clamping groove is provided between the two vertical holes, and the clamping groove is provided through the tail portion 16. The inner tube structure includes an inner tube body 5 and a clamping member 3 connected to the inner tube body 5, the inner tube body 5 is provided to fit the inner wall of the sleeve body 11, and the clamping member 3 is provided on the tail portion 16.

[0025] In the above solution, when the inner tube body 5 needs to be fixed, the clamping member 3 is placed on the tail 16 so that the clamping member 3 is clamped in the clamping groove, and at the same time, the inner tube body 5 is arranged to fit the inner wall of the sleeve body 11.

[0026] In some possible implementations, see Figure 5 As shown, the clamping member 3 includes a clamping block 31 connected to the inner tube body 5, the bottom of the clamping block 31 fits the upper end of the tail portion 16, and two protruding shafts 32 are provided at the bottom of the clamping block 31. The two protruding shafts 32 are respectively detachably connected to the two vertical holes. When the clamping member 3 is fixed, the bottom of the clamping block 31 fits the upper end of the tail portion 16, and the two protruding shafts 32 are respectively inserted into the two vertical holes, so as to fix the clamping block 31.

[0027] In some possible implementations, see Figure 5 As shown, a receiving cavity is provided in the clamping block 31, and through holes are provided on both the front and rear sides of the receiving cavity. A movable clamping joint 35 is provided in the through holes. A special-shaped spring 34 is provided in the receiving cavity. Both ends of the special-shaped spring 34 are respectively abutted against the inner side of the clamping joint 35. A through avoidance opening is provided at the bottom of the receiving cavity. The inner side of the clamping joint 35 extends downward. When the convex shaft 32 extends into the vertical hole, the inner side of the clamping joint 35 passes through the avoidance opening and the clamping groove in sequence, and the special-shaped spring 34 is installed in the receiving cavity through two legs 33.

[0028] In the above scheme, the two clamping joints 35 are symmetrically arranged, and the lower ends of the clamping joints 35 are clamped with the clamping grooves. When the two clamping joints 35 are squeezed, the special-shaped springs 34 contract, and the two clamping joints 35 approach each other, so that they can pass through the clamping grooves. After the two clamping joints 35 are released, the special-shaped springs 34 restore their deformation, so that the two clamping joints 35 are respectively clamped at the bottom of the front and rear sides of the clamping grooves, thereby completing the locking of the clamping block 31 and fixing the inner tube body 5.

[0029] The special-shaped spring 34 is a double-layer 90° double-leg fixed special-shaped spring.

[0030] The sleeve body 11 , the circular edge 13 , the tail portion 16 , the tube core body 21 , the supporting truncated platform 22 , the inner tube body 5 , the clamping block 31 , the protruding shaft 32 and the clamping joint 35 are made of transparent polycarbonate.

[0031] This specific embodiment is merely an explanation of the invention and is not a limitation of the invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as they are within the scope of protection of the invention, they are protected by patent law.

Claims

1. A neuroendoscopic cannula with suction function, characterized in that: include: A sleeve structure (1), the sleeve structure comprising a sleeve body (11), the lower end of the sleeve body (11) being provided with an annular hole (14), the bottom of the sleeve body (11) being provided with a plurality of vertical holes (15) along its circumferential direction, the plurality of vertical holes (15) being evenly connected to the annular hole (14), the inner wall of the sleeve body (11) being provided with a spiral hole (12) from top to bottom, the lower end of the spiral hole (12) being connected to the annular hole (14), the upper end of the spiral hole (12) being connected to a vacuum pump via an external pipe, the upper end of the sleeve body (11) being provided with a circular edge (13), the circular edge (13) being provided with a tail portion (16) on one side, and the tail portion (16) being upwardly curved; A tube core structure (2) or an inner tube structure, wherein the tube core structure (2) or the inner tube structure is detachably mounted in the sleeve body (11).

2. The neuroendoscopic cannula with suction function according to claim 1, characterized in that: The tube core structure (2) comprises a tube core body (21), the upper end of the tube core body (21) having a supporting truncated cone (22), and the lower end of the tube core body (21) being a 50° tapered end; The supporting truncated platform (22) is provided with a circular hole (23) from top to bottom, and the circular hole (23) extends to the lower end of the tube core body (21); The lower end of the circular hole (23) is connected to two symmetrically arranged slots (24), the slots (24) are arranged at an angle, and one end of the slots (24) away from the circular hole (23) passes through the tapered end; A screw-connected knob (4) is arranged inside the supporting truncated platform (22).

3. The neuroendoscopic cannula with suction function according to claim 1, characterized in that: The tail portion (16) is provided with two vertical holes from top to bottom, a clamping groove is provided between the two vertical holes, and the clamping groove is provided through the tail portion (16).

4. The neuroendoscopic cannula with suction function according to claim 3, characterized in that: The inner tube structure comprises an inner tube body (5) and a clamping piece (3) connected to the inner tube body (5); the inner tube body (5) is arranged to fit the inner wall of the sleeve body (11); and the clamping piece (3) is arranged on the tail portion (16).

5. The neuroendoscopic cannula with suction function according to claim 4, characterized in that: The clamping member (3) comprises a clamping block (31) connected to the inner tube body (5), and the bottom of the clamping block (31) is in contact with the upper end of the tail portion (16); Two convex shafts (32) are arranged at the bottom of the clamping block (31), and the two convex shafts (32) are respectively detachably connected to the two vertical holes.

6. The neuroendoscopic cannula with suction function according to claim 5, characterized in that: The clamping block (31) has an accommodating cavity formed therein, and through holes are formed on both the front and rear sides of the accommodating cavity; A movable card joint (35) is provided in the through hole; A special-shaped spring (34) is arranged in the accommodating cavity, and two ends of the special-shaped spring (34) respectively abut against the inner side of the clamping joint (35); A through escape opening is provided at the bottom of the accommodating cavity; The inner side of the card connector (35) extends downward; When the convex shaft (32) extends into the vertical hole, the inner side of the clamping joint (35) passes through the avoidance opening and the clamping groove in sequence.

7. The neuroendoscopic cannula with suction function according to claim 6, characterized in that: The special-shaped spring (34) is a double-layer 90° double-leg fixed special-shaped spring.

8. The neuroendoscopic cannula with suction function according to claim 7, characterized in that: The sleeve body (11), the circular edge (13), the tail (16), the tube core body (21), the supporting truncated cone (22), the inner tube body (5), the clamping block (31), the convex shaft (32) and the clamping joint (35) are made of transparent polycarbonate.

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