A female sleeve assembly of a neuroendoscope for deep ventricle and a method of using the same

Abstract

The present invention relates to a female neuroendoscope sleeve assembly for deep ventricles, comprising a primary sleeve, a primary sleeve core, a secondary sleeve, and a secondary sleeve core. The primary sleeve and the secondary sleeve can be nested with each other to construct a primary channel, and the secondary sleeve and the secondary sleeve core can be nested with each other and inserted into the primary sleeve to construct a secondary channel. Through the orderly coordination of the various components in the assembly, the replacement between a primary sleeve with a larger diameter and a shorter tube length for shallow brain tissue surgery and a secondary sleeve with a smaller diameter and a longer tube length for deep brain tissue surgery can be completed through coaxial exchange technology. The use of a thinner, more mobile, less brain-damaging, and more accurately positioned secondary sub-tube to enter deep tissue or ventricles is very beneficial to the protection of deep brain functional nuclei and numerous thin-walled arteries and veins in the ventricular wall, reducing surgical side effects, lowering surgical risks, and improving the patient's neurological function prognosis.

Description

Technical Field

[0001] The invention belongs to the field of medical devices, and in particular relates to a female sleeve assembly of a neuroendoscope used in the deep part of a cerebral ventricle and a method of using the same. Background Art

[0002] The ventricle is the deepest cavity structure in the brain tissue. It is the main channel and storage space for the circulation of cerebrospinal fluid in the skull. The ventricular wall structure around it includes important neural structures such as the thalamus, hypothalamus, and corpus callosum. There are also choroid plexus, intraventricular veins and other cerebrospinal fluid and blood circulation cavities inside it. Lesions here, such as bleeding and tumors, can lead to serious conditions such as acute ventricular dilatation, ventricular cast, hydrocephalus after cerebrospinal fluid circulation disorders, and brain herniation. In severe cases, it can be life-threatening at any time.

[0003] Traditional craniotomy incurs large wounds, causing extensive tissue damage to the scalp, skull, and dura mater, leading to slow recovery. Neuroendoscopic surgery, on the other hand, incurs minimal wounds and minimizes tissue damage to the aforementioned surgical channels. Its primary advantage is its maximum protection of brain tissue, resulting in the greatest possible rescue and improvement of the patient's brain function. For deep intraventricular hematoma removal and lesion resection, the advantages of neuroendoscopy are becoming increasingly apparent, manifesting in minimally invasive procedures, accurate positioning, minimal brain tissue damage, minimal bleeding from major blood vessels, and maximum protection of neurological function. However, the endoscopic sleeves currently used for deep intraventricular procedures and surgical treatments employ a single model, with most instruments designed for superficial cortical and subcortical brain tissue. These instruments suffer from numerous disadvantages, including large diameters, short lengths, significant compression of deep brain tissue, extensive deep damage, unclear insertion depth, inflexible movement, and limited visibility and maneuverability angles. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a female sleeve assembly of a neuroendoscope for deep ventricles and a method for using the same.

[0005] The technical solution adopted by the present invention is: a female sleeve assembly of a neuroendoscope for deep ventricle, comprising:

[0006] The first-stage casing is a conical tube with both ends open;

[0007] The primary sleeve core is a conical tube with two open ends, which can be embedded in the primary sleeve;

[0008] The secondary casing is a cylindrical or conical tube with both ends open; it can be inserted into the primary casing;

[0009] The secondary sleeve core is a cylindrical or conical tube with two ends open, and can be embedded in the secondary sleeve.

[0010] Preferably, the first-level core fits the inner wall of the first-level casing, and the lower end of the first-level core is not shorter than the lower edge of the first-level casing.

[0011] Preferably, a first-level casing fixing arm is provided at the upper end of the first-level casing, and a first-level casing core fixing arm is provided at the upper end of the first-level casing core, and the first-level casing fixing arm matches the first-level casing core fixing arm in position;

[0012] Preferably, a first positioning protrusion is provided on the first-level casing fixing arm, and a first positioning groove is provided on the first-level casing core fixing arm, and the first positioning protrusion can be engaged with the first positioning groove.

[0013] Preferably, a pair of primary casing fixing arms are symmetrically provided on the upper end of the primary casing, and a primary casing core fixing ring is provided on the upper end of the primary casing core. The primary casing fixing arms can penetrate into the primary casing core fixing ring.

[0014] Preferably, the secondary core can fit in contact with the inner wall of the secondary sleeve, and the lower end of the secondary core is not shorter than the lower edge of the secondary sleeve.

[0015] Preferably, a secondary casing fixing arm is provided at the upper end of the secondary casing, and the secondary casing fixing arm is parallel to the axis of the secondary casing.

[0016] Preferably, a secondary casing fixing arm is provided at the upper end of the secondary casing, and a secondary casing core fixing arm is provided at the upper end of the secondary casing core, and the positions of the secondary casing fixing arm and the secondary casing core fixing arm are matched;

[0017] Preferably, a second positioning protrusion is provided on the secondary sleeve fixing arm, and a second positioning groove is provided on the secondary sleeve core fixing arm, and the second positioning protrusion can be engaged with the second positioning groove.

[0018] Preferably, it further comprises a suction device, wherein the suction tube of the suction device is arc-shaped; the suction device can penetrate into the primary cannula or the secondary cannula;

[0019] Preferably, the primary cannula, the secondary cannula and the suction tube are all provided with scales;

[0020] Preferably, when the secondary sleeve is a cylindrical tube, the inner diameter of the lower edge of the primary sleeve is not less than the outer diameter of the secondary sleeve; when the secondary sleeve is a conical tube, after the secondary sleeve is inserted into the primary sleeve, the gap between the bottom edge of the primary sleeve and the outer surface of the secondary sleeve is not less than 1 mm.

[0021] The method for using the female sleeve assembly of a neuroendoscope for deep ventricles is characterized by: combining the first-level sleeve and the first-level sleeve core, placing them at a set position, and removing the first-level sleeve core.

[0022] Preferably, the secondary sleeve and the secondary core are combined and inserted into the primary core;

[0023] Remove the primary casing and the secondary casing core;

[0024] Alternatively, the secondary sleeve and the secondary core are combined and inserted into the primary core;

[0025] The secondary core is removed.

[0026] The advantages and positive effects of the present invention are: providing a new type of endoscopic auxiliary instrument for deep ventricular surgery, the neuroendoscope female sleeve assembly can establish a channel with an adjustable diameter, with precise embedding depth, high mobility, and sufficient and comprehensive visual and operational angles, avoiding brain tissue friction and brain tissue cutting damage caused by repeated insertion of the sleeve, and at the same time, when used for deep brain tissue surgery, the damage caused is small and the degree of extrusion is light. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic structural diagram of a female sleeve assembly of a neuroendoscope according to an embodiment of the present invention;

[0028] Figure 2 A schematic diagram of the arrangement of the various components in a female sleeve assembly of a neuroendoscope according to one embodiment of the present invention;

[0029] Figure 3 A schematic diagram of the top view of the structure of the various components of the female sleeve assembly of a neuroendoscope according to one embodiment of the present invention;

[0030] Figure 4 Schematic diagram of a method for using a primary casing and a primary casing core according to an embodiment of the present invention;

[0031] Figure 5 Schematic diagram of a method for using a secondary casing and a secondary casing core according to an embodiment of the present invention;

[0032] Figure 6 A schematic diagram of the structure of a primary casing and a primary casing core in one embodiment of the present invention;

[0033] Figure 7 A schematic diagram of the secondary casing and secondary casing core structure in one embodiment of the present invention;

[0034] Figure 8 A schematic diagram of the arrangement of various components in one embodiment of the present invention;

[0035] Figure 9 A schematic diagram of the structure of an attractor in one embodiment of the present invention;

[0036] Figure 10 A schematic diagram of the arrangement of various components in one embodiment of the present invention;

[0037] In the figure: 1. primary casing, 11. primary casing fixing arm, 12. first positioning protrusion, 13. suture fixing hole, 2. primary casing core, 21. primary casing core fixing arm, 22. first positioning groove, 23. primary casing core fixing ring, 3. secondary casing, 31. secondary casing fixing arm, 4. secondary casing core. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described below with reference to the accompanying drawings.

[0039] The present invention relates to a female sleeve assembly of a neuroendoscope for use in the deep part of a cerebral ventricle, such as Figure 1 As shown, it includes a primary casing, a primary casing core, a secondary casing and a secondary casing core.

[0040] The primary casing is a conical tube with open ends, wide at the top and narrow at the bottom, and can be used to establish a shallow channel. The primary casing core is also a conical tube with open ends, wide at the top and narrow at the bottom, but with only a small circular hole at the bottom. The shape and size of the upper opening are consistent with the primary casing, and can be embedded in the primary casing. When the primary casing core and the primary casing are nested, the primary casing core can fit the inner wall of the primary casing, and the bottom of the primary casing core slightly protrudes from the bottom of the primary casing. Figure 2 As shown. The lower end of the primary core is no shorter than the lower edge of the primary cannula. The portion of the primary core that extends beyond the bottom of the primary cannula converges inward to form a spherical surface, with a decompression drainage hole in the center of the sphere. During use, the primary cannula and primary core are nested and inserted superficially into the brain along a predetermined route. The bottom of the primary core is a rounded spherical surface, which squeezes brain tissue to the sides, forming a channel for accommodating the primary cannula. Cerebrospinal fluid, necrotic brain tissue, and hematoma can be discharged into the core through the drainage hole in the center of the bottom of the primary core, alleviating intracranial pressure during cannula insertion.

[0041] In order to facilitate operation and improve the tightness of the combination of the primary casing and the primary core, in some embodiments of the present invention, fixed arms are respectively provided on the upper edges of the primary casing and the primary core, and the direction of the fixed arms is perpendicular to the axis of the primary casing; the upper end of the primary casing is provided with a primary casing fixed arm, and the upper end of the primary core is provided with a primary core fixed arm, and the positions of the primary casing fixed arm and the primary core fixed arm are matched and can overlap. Among them, the primary casing fixed arm and the primary core fixed arm have different lengths, such as Figure 3As shown, it is convenient to distinguish the primary sleeve fixing arm and the primary core fixing arm by length during operation. Furthermore, in order to enhance the fit between the primary sleeve and the primary core during use, a first positioning protrusion is provided on the primary sleeve fixing arm, and a first positioning groove is provided on the primary core fixing arm. The first positioning protrusion can be engaged with the first positioning groove. When the primary sleeve and the primary core are nested and fit together for use, the first positioning protrusion and the first positioning groove on the fixing arm further prevent the two from circumferentially shifting. The first positioning protrusion and the first positioning groove can be provided on the side surfaces of the primary sleeve fixing arm and the primary core fixing arm, and / or simultaneously provided on the mutually fitting surfaces of the primary sleeve fixing arm and the primary core fixing arm.

[0042] In other embodiments of the present invention, Figure 6 As shown, primary casing fixing arms are symmetrically arranged on both sides of the upper end of the primary casing, with the direction of the primary casing fixing arms being parallel to the axis of the primary casing and in a vertically upward position. A primary casing core fixing ring is arranged on both sides of the upper edge of the primary casing core. The primary casing fixing arms match the position and shape of the primary casing core fixing ring. The primary casing fixing arms can be inserted into the primary casing core fixing ring. After the two overlap and nest, the primary casing core fixing ring is located at the bottom of the primary casing fixing arms. The center of the primary casing core fixing ring can be rectangular, circular, elliptical or other shapes, and the primary casing core fixing arms can be inserted into the primary casing core fixing ring. It is preferred to use a rectangular primary casing core fixing ring and a primary casing fixing arm with a rectangular projection shape. The two shapes match and can fit tightly together. The close cooperation between the primary casing core fixing ring and the primary casing fixing arm strengthens the consistency of the primary casing and the primary casing core.

[0043] To facilitate handling, the outer side of the primary cannula's retaining arm features a curved concave surface. This not only facilitates accurate gripping during use, but also prevents interference with the insertion and removal of the primary cannula. The edge of the primary cannula's retaining ring extends beyond the bottom surface of the primary cannula's retaining arm, facilitating accurate identification of the retaining ring when removing the primary cannula. The primary cannula's upper edge also features one or more circular suture holes, which can be used to suture and secure the primary cannula during use, maintaining its stability. Preferably, there are four suture holes, one on each side of the bottom of the primary cannula's retaining arm.

[0044] The secondary cannula is a cylindrical or conical tube with open ends that can be placed inside the primary cannula. The secondary cannula is longer than the primary cannula and is used to establish a surgical channel deep within the brain. During use, the outer diameter of the cylindrical secondary cannula is no larger than the inner diameter of the primary cannula's bottom, allowing the secondary cannula to fit within and pass through the primary cannula's bottom. Alternatively, the outer diameter of the conical secondary cannula is smaller than the inner diameter of the primary cannula's bottom. When the secondary cannula is placed inside the primary cannula and the top of the cannula is aligned, a gap of at least 1 mm is maintained between the bottom edge of the primary cannula and the outer wall of the secondary cannula, allowing the secondary cannula to adjust within a certain range of angles within the primary cannula.

[0045] There is also a secondary core, which is a cylindrical or conical tube with the same shape as the secondary casing and can be embedded in the secondary casing. The lower end of the secondary core is not shorter than the lower edge of the secondary casing. The part of the secondary core that exceeds the bottom of the secondary casing is gathered inward to form a spherical surface. The center of the spherical surface is provided with a pressure relief drainage hole, such as Figure 2 When in use, the secondary cannula and secondary core are nested and inserted into the range of the primary cannula according to the set route. The bottom of the secondary core is rounded and spherical, separating the brain tissue to both sides along the brain tissue gap, forming a central channel for accommodating the secondary cannula.

[0046] In certain embodiments of the present invention, a secondary cannula retaining arm is provided at the upper edge of the secondary cannula. The arm is parallel to the axis of the secondary cannula to prevent it from interfering with the primary cannula during removal from the secondary cannula. The arm can also be used to secure the device or to maintain the position of the secondary cannula, maintaining a stable access channel during surgery.

[0047] In some other embodiments of the present invention, Figure 7 As shown, a secondary cannula is provided with a secondary cannula fixing arm at its upper edge, perpendicular to the axis of the secondary cannula. A secondary cannula fixing arm is also provided at the upper edge of the secondary core. The secondary cannula fixing arm and the secondary core fixing arm correspond in position and can overlap, and the secondary cannula fixing arm and the secondary core fixing arm are of different lengths for easy identification. The secondary cannula fixing arm and the secondary core fixing arm can be used to fix the device or hold the secondary cannula in place, maintaining the stability of the channel during surgery. The secondary cannula fixing arm is provided with a second fixing protrusion, and the secondary core fixing arm is provided with a second positioning groove. The second positioning protrusion and the second positioning groove correspond in position and can interlock. When the secondary core is placed in the secondary cannula, the second positioning protrusion and the second positioning groove limit the position of the two, preventing relative displacement in the axial or circumferential direction. The second positioning protrusion and the second positioning groove can be provided on the side surfaces of the secondary cannula fixing arm and the secondary core fixing arm, and / or simultaneously on the surfaces where the secondary cannula fixing arm and the secondary core fixing arm contact each other.

[0048] The primary cannula and primary core are used to establish a channel superficially in the brain, while the secondary cannula and secondary core are used to establish a channel deeper. Depending on the different combinations of the primary and secondary cannulas, the surgical plan can be selected to remove or maintain the primary cannula.

[0049] The secondary cannula and secondary core are preferably tapered. The tapered tube's sloped structure facilitates adjustment of the primary and secondary channels, increasing the applicability of the neuroendoscope's mother sleeve. When removing the primary cannula after establishing the secondary channel, the bottom inner diameter of the primary cannula is set to be larger than the top outer diameter of the secondary cannula, allowing the primary cannula to be removed from outside the secondary cannula without obstruction.

[0050] When the solution of removing the primary casing after establishing the secondary channel is used, the fixing arms of the secondary casing and the secondary casing core are parallel to the axis, such as Figure 4 As shown, first, the first-level core and the first-level casing are nested to avoid relative displacement during the operation process. After the first-level core and the first-level casing assembly are placed at the set position according to the set route, the first-level core is removed from the top, and the position of the first-level casing forms a first-level channel; as shown Figure 5 As shown, the secondary core and secondary casing are nested and inserted into the primary casing, and the primary casing is removed from above the secondary casing. The secondary core and secondary casing can be moved to a suitable depth as needed, and the secondary core is removed. A secondary channel is formed at the location of the secondary casing. When the secondary channel is directly established in the primary channel, as shown in FIG. Figure 7 As shown, when using a neuroendoscopic female sleeve assembly including a secondary sleeve with a fixed arm perpendicular to the axis, the primary sleeve core and the primary sleeve are first nested. After removing the primary sleeve core, the secondary sleeve and the secondary sleeve core are combined and placed in a set position according to a set route. After removing the secondary sleeve core, the primary sleeve and the secondary sleeve are combined to form a surgical channel.

[0051] By combining the primary core and primary cannula, as well as the secondary core and secondary cannula, coaxial exchange technology allows for the replacement of a short, thick primary cannula with a long, thin secondary cannula. This neuroendoscopic female sleeve assembly is suitable for surgeries at varying depths of brain tissue, maximizing brain protection, minimizing vascular damage, and providing flexible steering and precise positioning.

[0052] The female sleeve assembly of the neuroendoscope used in the deep part of the ventricle can also include an aspirator, which includes an aspirator head and a suction tube. The aspirator head can adopt a common structure in the prior art. The suction tube is connected to the aspirator head and performs suction under the action of the aspirator head. The suction tube is arc-shaped and has a scale at the end, which can accurately measure the depth of the aspirator penetrating into the brain tissue under neuroendoscopic observation. Figure 8When in use, the suction tube is extended from the lower end of the primary or secondary cannula to absorb excess blood. The curved design allows for a wider exploration range, increasing the applicability of the neuroendoscope female sleeve assembly.

[0053] In certain embodiments of the present invention, the primary sleeve, primary core, secondary sleeve, and secondary core are all made of transparent resin material. Existing sleeves are mostly made of plastic or metal. Metal materials are hard and opaque, making it difficult to observe and protect brain tissue, and require repeated disinfection and use. Although plastic materials are relatively cheap, they are less flexible. At the same time, there is greater friction during the combination and replacement of the sleeve and core, which poses risks to the stability and fixed position of the sleeve in the brain tissue, and may cause the sleeve to shift, the brain tissue to be pulled to the side, and cause channel tissue cutting and bleeding. The use of transparent resin material not only allows real-time observation of the brain tissue inside and outside the tube, and the adjustment of depth, position, etc., but also has the flexibility of resin, low friction, keeps the tube body in a stable position, reduces surgical risks, and has a protective effect on brain tissue.

[0054] Furthermore, the primary and secondary cannulas are provided with scales, preferably with four-way scales. The transparent material makes it easier to observe the scale position, and the four-way setting enables the understanding of the positioning depth and position at any time. The primary and secondary cannulas are fully marked with scales at four positions on the tube wall, and there is a set of scale rulers every 90°. There is no need to rotate the sleeve to find the scale line, which is very convenient for observing the lesions and bleeding around the sleeve from different directions and angles after the sleeve enters the brain tissue, making it easier to make marks, and for different members of the surgery to express the lesion position to each other and communicate the intraoperative situation, providing a convenient and accurate "beacon" for the cooperation between surgeons.

[0055] The usage of the female sleeve assembly of the neuroendoscope for deep ventricles is flexible and varied. For example, a larger diameter primary cannula is used during shallow surgery to quickly and efficiently open the tissue channel and complete the resection of superficial lesions and hematomas to the greatest extent through a relatively open space. If it is necessary to further penetrate deep brain tissue or ventricles, the coaxial exchange technology is used to upgrade the primary cannula to a smaller diameter secondary cannula. A thinner secondary cannula with less brain damage and more accurate positioning is used to enter deep tissue or ventricles, which is beneficial to the protection of deep brain functional nuclei and numerous arteries and veins in the ventricular wall, reducing surgical side effects, protecting neurological function, and striving for better surgical prognosis. At the same time, deep ventricular operations require constant changes in observation angles to clear hematomas from all directions in the three-dimensional space of the ventricles. The thinner secondary cannula can more flexibly change the observation direction and accurately locate the hematoma site in the ventricles, perform deep, close-range, and precise operations, and reduce the risk of brain damage and bleeding.

[0056] Coaxial exchange technology can also avoid repeated insertion of sleeves. During repeated insertion, when the first sleeve is withdrawn, the sleeve channel rapidly shrinks and fills with brain tissue due to its inherent elasticity. The second sleeve needs to separate the brain tissue again when entering, which can cause damage such as re-cutting and squeezing of brain tissue, affecting the patient's neurological function after surgery. The coaxial use of the primary and secondary cannulas ensures that the secondary cannula insertion process does not cause re-cutting and damage to brain tissue, playing an important role in protecting brain function and preventing postoperative cerebral edema.

[0057] The present invention is described below with reference to the accompanying drawings. Experimental methods without specific operating steps are carried out in accordance with the corresponding product specifications. Unless otherwise specified, the instruments, reagents, and consumables used in the examples can be purchased from commercial companies.

[0058] Example 1:

[0059] A female sleeve assembly of a neuroendoscope for deep ventricle, such as Figure 1 As shown, it includes a primary sleeve, a primary sleeve core, a secondary sleeve and a secondary sleeve core, and the primary sleeve, the primary sleeve core, the secondary sleeve and the secondary sleeve core are all made of transparent resin materials.

[0060] Both the primary sleeve and the primary core are conical and open at both ends, allowing them to interlock. The lower end of the primary core extends spherically outward from the lower end of the primary sleeve. The upper end of the primary sleeve has an inner diameter of 26mm, the lower end has an inner diameter of 12.9mm, and the length is 75mm. A primary sleeve retaining arm is located at the upper end of the primary sleeve, perpendicular to the axis of the primary sleeve and equipped with a first positioning projection. A primary core retaining arm is located at the upper end of the primary core, similarly perpendicular to the axis of the primary sleeve and capable of interlocking with the primary sleeve retaining arm. The primary core retaining arm is also located at the upper end of the primary sleeve, with a first positioning groove interlocking with the first positioning groove when the primary sleeve and primary core are interlocked, ensuring relative circumferential fixation of the primary sleeve and primary core. Four sets of scales are evenly spaced along the inner wall of the primary sleeve to indicate the insertion depth of the primary sleeve.

[0061] The secondary casing and the secondary core are both open-ended cylindrical tubes that can be fitted into each other. The lower end of the secondary core extends out of the bottom of the secondary casing, and the extended portion is spherical. The inner diameter of the secondary casing is 9.8mm and the length is 105mm. The upper end of the secondary core protrudes outward to form a limit platform, such as Figure 3As shown, when the secondary core is nested within the secondary casing, a stopper prevents the core from sliding out of the secondary casing via its upper end. This allows the core to rise above the secondary casing and move only from the upper end. A secondary casing retaining arm is located at the upper edge of the secondary casing. This arm connects to the side of the secondary casing's top edge to prevent interference with the stopper. The arm points upward and parallel to the secondary casing's axis. Four sets of scales are evenly spaced along the inner wall of the secondary casing to indicate the insertion depth of the secondary casing.

[0062] The primary cannula and primary core are used in the initial stage of surgery, and the secondary cannula and secondary core are used in the deep surgery stage. The neuroendoscope female sleeve assembly includes the following steps when used in brain surgery:

[0063] Step 1: The primary cannula and primary core are combined and fixed, and the combination is gradually inserted into the brain tissue and reaches the lesion site;

[0064] Step 2: Fix the primary cannula and remove the primary cannula core to form a primary channel for superficial surgery. Insert the neuroendoscope, suction device, and bipolar coagulation device into the bottom of the cannula to begin hematoma or lesion resection surgery.

[0065] Step 3: After completing the superficial surgery, the deep lesion surgery begins. The secondary cannula and secondary cannula core are combined and fixed. They are gradually inserted into the bottom of the primary cannula, and a cannula with a smaller diameter is used to further expand the space in the brain tissue.

[0066] Step 4: Remove the primary casing longitudinally from the bottom upwards, keeping the secondary casing core assembly position unchanged during the operation;

[0067] Step 5: Push the secondary assembly device deep into the brain tissue to the deep hematoma or ventricle, fix the secondary cannula, and remove the secondary cannula core. Insert the neuroendoscope, suction device, and bipolar coagulation device into the bottom of the secondary cannula to begin the resection of the deep brain tissue or ventricular lesion or hematoma lesion.

[0068] Step 6: After the operation, slowly and gradually remove the secondary cannula, and pay attention to stopping bleeding during the withdrawal process.

[0069] Example 2:

[0070] A female sleeve assembly of a neuroendoscope used in the deep part of a cerebral ventricle comprises a primary sleeve, a primary sleeve core, a secondary sleeve and a secondary sleeve core, wherein the primary sleeve, the primary sleeve core, the secondary sleeve and the secondary sleeve core are all made of transparent resin materials.

[0071] The primary sleeve and primary core are both open-ended, conical cylinders that fit snugly together. The lower end of the primary core extends beyond the lower end of the primary sleeve, forming a spherical section. The primary sleeve has an inner diameter of 26mm at the top and 12.9mm at the bottom, with a length of 75mm. A pair of symmetrical primary sleeve retaining arms extend upward from the upper end of the primary sleeve, oriented parallel to the axis of the sleeve. These arms are rectangular in shape, with curved recesses on their outer surfaces. The symmetrical recesses can be grasped to secure the primary sleeve.

[0072] The primary core is fitted with a primary retaining ring at its upper end. Two rectangular holes are located within this ring, aligning with the primary cannula retaining arms. These arms fit through the primary core retaining holes. When the primary cannula and primary core are nested, the primary core retaining holes align with the bottoms of the primary cannula retaining arms. Four sets of graduated scales are evenly spaced along the inner wall of the primary cannula to indicate the insertion depth. Four suture retaining holes are also evenly spaced along the upper edge of the primary cannula.

[0073] Both the secondary casing and the secondary core are tapered tubes with open ends, allowing for interlocking. The lower end of the secondary core extends beyond the bottom of the secondary casing, forming a spherical shape. The maximum diameter of the secondary casing is smaller than that of the primary casing, and the secondary casing is longer than the primary casing. When the secondary casing is fully inserted into the primary casing, a 1mm gap remains between the bottom edge of the primary casing and the outer wall of the secondary casing. The secondary casing has an inner diameter of 24mm at the upper end, 9.8mm at the lower end, and a length of 105mm.

[0074] A secondary casing fixing arm is provided at the upper edge of the secondary casing. The secondary casing fixing arm is perpendicular to the secondary casing axis. A secondary casing core fixing arm is provided at the upper edge of the secondary casing core. The secondary casing fixing arm and the secondary casing core fixing arm correspond in position and can overlap. The secondary casing fixing arm and the secondary casing core fixing arm are of different lengths. A second fixing protrusion is provided on the secondary casing fixing arm, and a second positioning groove is provided on the secondary casing core fixing arm. The second positioning protrusion and the second positioning groove correspond in position and can fit together. When the secondary casing core is placed in the secondary casing, the second positioning protrusion and the second positioning groove can limit the position of the two to maintain relative stability, avoiding relative displacement in the axial direction or circumferential direction. Four sets of scales are evenly distributed on the inner wall of the secondary casing, which can be used to indicate the insertion depth of the secondary casing.

[0075] The primary cannula and primary core are used in the initial stage of surgery, and the secondary cannula and secondary core are used in the deep stage of surgery, such as Figure 10 The neuroendoscope female sleeve assembly includes the following steps when used for brain surgery:

[0076] Step 1: The primary cannula and primary core are combined and fixed, and the combination is gradually inserted into the brain tissue and reaches the lesion site;

[0077] Step 2: Suture the primary cannula to the scalp through the suture fixation hole, keep the primary cannula in place, remove the primary cannula core, and form a primary channel for superficial surgery. Insert the neuroendoscope, suction device, and bipolar coagulation device into the bottom of the cannula to begin the hematoma or lesion resection surgery.

[0078] Step 3: After completing the superficial surgery, the deep lesion surgery begins. The secondary cannula and secondary cannula core are combined and fixed. Gradually inserted into the bottom of the primary cannula, a cannula with a smaller diameter and longer length is used to further expand the space in the brain tissue.

[0079] Step 4: Push the secondary assembly device deep into the brain tissue until it reaches the deep hematoma or the interior of the ventricle, fix the secondary cannula, and remove the secondary cannula core;

[0080] Step 5: Insert the suction device into the bottom of the secondary cannula to absorb blood accumulated deep in the brain tissue; the suction tube angle can be adjusted in multiple directions by rotating the suction device;

[0081] Step 6: After the operation, slowly and gradually remove the secondary cannula and the primary cannula, and pay attention to stopping bleeding during the withdrawal process.

[0082] The embodiments of the present invention are described in detail above, but the contents described are only preferred embodiments of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A female sleeve assembly for a neuroendoscope deep in the ventricle, characterized by: include, The first-level casing is a conical tube with both ends open; The primary casing core is a conical tube with open ends, which can be inserted into the primary casing; the primary casing core fits the inner wall of the primary casing, the lower end of the primary casing core is no shorter than the lower edge of the primary casing, and the portion of the primary casing core that extends beyond the bottom of the primary casing is inwardly contracted to form a spherical surface, with a decompression drainage hole provided in the center of the spherical surface; The secondary sleeve is a cylindrical or conical sleeve with both ends open; it can be inserted into the primary sleeve and is longer than the primary sleeve. The secondary sleeve core is a cylindrical or conical tube with two open ends, which can be embedded in the secondary sleeve; The secondary core can fit the inner wall of the secondary sleeve, the lower end of the secondary core is not shorter than the lower edge of the secondary sleeve, the part of the secondary core that exceeds the bottom of the secondary sleeve is gathered inward to form a spherical surface, and a decompression drainage hole is provided in the center of the spherical surface.

2. The female sleeve assembly of the neuroendoscope for deep ventricle according to claim 1, characterized in that: The upper end of the primary casing is provided with a primary casing fixing arm, the upper end of the primary casing core is provided with a primary casing core fixing arm, and the primary casing fixing arm matches the position of the primary casing core fixing arm; The first-level casing fixing arm is provided with a first positioning protrusion, and the first-level casing core fixing arm is provided with a first positioning groove, and the first positioning protrusion can be engaged with the first positioning groove.

3. The female sleeve assembly of the neuroendoscope for deep ventricle according to claim 1, characterized in that: A pair of primary casing fixing arms are symmetrically provided on the upper end of the primary casing, and a primary casing core fixing ring is provided on the upper end of the primary casing. The primary casing fixing arms can extend into the primary casing core fixing ring.

4. The female sleeve assembly of the neuroendoscope for deep ventricle according to claim 1, characterized in that: A secondary sleeve fixing arm is provided at the upper end of the secondary sleeve, and the secondary sleeve fixing arm is parallel to the axis of the secondary sleeve.

5. The female sleeve assembly of the neuroendoscope for deep ventricle according to claim 1, characterized in that: The upper end of the secondary casing is provided with a secondary casing fixing arm, and the upper end of the secondary casing core is provided with a secondary casing core fixing arm, and the positions of the secondary casing fixing arm and the secondary casing core fixing arm are matched; The secondary sleeve fixing arm is provided with a second positioning protrusion, and the secondary sleeve core fixing arm is provided with a second positioning groove, and the second positioning protrusion can be engaged with the second positioning groove.

6. The female sleeve assembly of a neuroendoscope for deep ventricle according to any one of claims 1 to 5, characterized in that: It also includes a suction device, wherein the suction tube of the suction device is arc-shaped; the suction device can penetrate into the primary cannula or the secondary cannula; When the secondary sleeve is a cylindrical tube, the inner diameter of the lower edge of the primary sleeve is not less than the outer diameter of the secondary sleeve; when the secondary sleeve is a conical tube, after the secondary sleeve is inserted into the primary sleeve, the gap between the bottom edge of the primary sleeve and the outer surface of the secondary sleeve is not less than 1 mm.

7. The female sleeve assembly of a neuroendoscope for deep ventricle according to any one of claims 1 to 5, characterized in that: Combine the primary casing and the primary core, place them in a set position, and remove the primary core; Assemble the secondary sleeve and the secondary core, and insert the secondary sleeve into the primary core; Remove the primary casing and the secondary casing core; Alternatively, the secondary sleeve and the secondary core are combined and inserted into the primary core; The secondary core is removed.

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