A brain hemorrhage surgery with a continuous flush-suction brain tissue expander

Abstract

This invention provides a brain tissue dilator for continuous irrigation and suction during cerebral hemorrhage surgery, comprising a sheath with a hollow, frustum-shaped structure; the outer diameter of the distal endoscopic section of the sheath is smaller than that of the proximal endoscopic section, and the sheath also has an annular sealed channel; an inner core tube; an irrigation-suction control unit including a connecting tube sealed and fixed to the outer wall of the sheath, the connecting tube having parallel and isolated inlet and outlet, the inlet being connected to the irrigation channel, the outlet being connected to the suction channel, and the inlet being connected to a positive pressure irrigation port through a first branch pipe, the outlet being connected to a negative pressure suction port through a second branch pipe; and a fixed handle located on the outer wall of the sheath away from the connecting tube. This invention allows the surgeon to flexibly adjust the irrigation and suction operations according to the nature of the hematoma and the bleeding situation, improving the efficiency of hematoma removal.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a brain tissue expander for continuous flushing and suction during cerebral hemorrhage surgery. Background Technology

[0002] The basal ganglia are the most common site of hypertensive intracerebral hemorrhage. Due to their deep location and proximity to important neurovascular structures, neuroendoscopic surgery for hypertensive intracerebral hemorrhage offers advantages such as short operation time, minimal trauma, clear visualization, and thorough hematoma removal, making it widely used clinically. Brain tissue dilators provide excellent access and visualization for neuroendoscopic surgery. Clinically, commonly used brain tissue dilators are around 10mm in diameter. While this reduces brain tissue damage, it also reduces the space available for surgical instruments. During hematoma removal, the surgeon must control the light source with one hand and operate only a single surgical instrument with the other. Rapid and precise hemostasis is crucial for the success of intracerebral hemorrhage surgery. When active bleeding is encountered during surgery, the surgeon uses a suction tube to remove accumulated blood from the surgical field. After exposing the bleeding point, the hemostatic instrument needs to be changed. Within just a few seconds, the surgical field can fill with blood, submerging the bleeding point, leading to difficulty in hemostasis or requiring repeated changes of suction and electrocoagulation devices. This prolongs the operation time, increases blood loss, or forces blind hemostasis operations within accumulated blood, damaging normal blood vessels or brain tissue and causing serious surgical complications. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a brain tissue expander for continuous flushing and suction during cerebral hemorrhage surgery and its method of use.

[0004] The specific technical solution is as follows:

[0005] A brain tissue expander for continuous flushing-suction during brain hemorrhage surgery, including

[0006] The sheath is a hollow, frustum-shaped structure. It also has an annular sealed channel comprising a flushing channel and a suction channel that are isolated from each other. Multiple hollow pipes are distributed circumferentially along the sheath wall and extending along the long axis of the sheath between the inner and outer walls. The flushing channel and the suction channel are respectively connected to their corresponding hollow pipes. The lower end of each hollow pipe connects to a side hole channel opened in the inner wall of the sheath.

[0007] The inner core tube is coaxially sleeved inside the sheath tube, and the bottom of the inner core tube is provided with an arc-shaped passivated end;

[0008] A flushing-suction control unit includes a connecting pipe sealed and fixed to the outer wall of a sheath. The connecting pipe has an inlet and an outlet arranged side-by-side and isolated from each other. The inlet is connected to a flushing channel, and the outlet is connected to a suction channel. The inlet is connected to a positive pressure flushing port via a first branch pipe, and the outlet is connected to a negative pressure suction port via a second branch pipe.

[0009] A fixed handle is located on the outer wall of the sheath at the end furthest from the connecting tube.

[0010] Optionally, the radius of curvature of the arc-shaped blind end of the inner core tube is matched with the diameter of the distal endoscopic segment of the sheath to avoid damage to brain tissue during insertion.

[0011] Optionally, the sheath has at least two hollow tubes, which are evenly distributed along the circumference of the sheath.

[0012] Optionally, the second branch pipe has a side hole in its wall, and the side hole is threaded with a nut structure. The ventilation area of ​​the side hole can be adjusted by rotating the nut to control the suction force.

[0013] Optionally, the sheath has graduations on its sidewall.

[0014] Optionally, a one-way valve structure is provided at the connection between the first branch pipeline and the flushing channel to prevent backflow of surgical field fluid.

[0015] Optionally, the fixed handle is provided with anti-slip texture.

[0016] Optionally, both the sheath and the inner core tube are made of transparent plastic.

[0017] Optionally, the top end of the inner core tube extends beyond the top end of the sheath tube to prevent the inner core tube from falling off.

[0018] Optionally, the outer diameter of the distal endoscope segment of the sheath is smaller than the outer diameter of the proximal endoscope segment.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] In this invention, during hematoma removal, the irrigation-suction control unit can connect to a positive pressure irrigation device, allowing the irrigation fluid to reach the surgical field. Continuous irrigation keeps the surgical field moist; simultaneously, it softens the hematoma, making it easier to remove with the suction device. The surgeon can adjust the irrigation speed and flow rate according to the specific condition of the hematoma, such as its size and hardness: for example, for larger and harder hematomas, appropriately increasing the irrigation flow rate can more effectively soften the hematoma. This adjustability improves the ability to handle different hematoma conditions. When active bleeding occurs during surgery, the system can quickly switch to suction mode; the blood accumulated in the surgical field is suctioned out using a negative pressure suction device, and the suction strength can be adjusted according to the amount of bleeding. Adjusting the suction strength can avoid excessive suction that could damage brain tissue; for example, when the amount of bleeding is small, the suction strength can be appropriately reduced. This precise control ensures that brain tissue is protected while removing the blood.

[0021] In this invention, the surgeon can flexibly adjust the irrigation and suction operations according to the hematoma condition, greatly improving the efficiency of hematoma removal. During hemostasis, the surgeon can switch to suction mode in a timely manner to keep the surgical field clean and clear. The surgeon can accurately locate the bleeding point and perform hemostasis, which reduces problems such as failure to stop bleeding and repeated instrument changes caused by blood flooding the bleeding point in the surgical field, thereby shortening the operation time. In addition, the surgeon can also achieve a mode of irrigation and suction simultaneously to keep the surgical field clean and clear, thereby shortening the operation time and improving the operation efficiency.

[0022] This novel brain tissue expander can be used not only in hypertensive intracerebral hemorrhage surgery, but also in other types of intracerebral hemorrhage surgery. Its irrigation-suction function and excellent structural design provide surgeons with good surgical access and field of vision in different types of intracerebral hemorrhage surgery. In addition to intracerebral hemorrhage surgery, it can also be used in neuroendoscopic treatment of intracranial tumors. During the operation, by alternately irrigating and suctioning, the surgical field is kept clear and clean, providing good vision and convenience for subsequent surgical operations, further demonstrating its versatility and broad application prospects. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to this utility model.

[0024] Figure 2 This is a schematic cross-sectional view of the side port channel in the brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery of this utility model.

[0025] Figure 3 This is a schematic diagram of the inner core tube being removed during the use of the continuous irrigation-suction brain tissue expander for cerebral hemorrhage surgery according to this utility model.

[0026] Figure 4 yes Figure 1 Enlarged view of the letter A in the image;

[0027] Figure 5 This is a frontal view of the sheath structure in the brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to this utility model.

[0028] Figure 6 yes Figure 5 A schematic diagram of the cross-sectional structure at the middle edge BB.

[0029] In the diagram: 1. Sheath; 10. Annular sealed channel; 101. Flushing channel; 102. Suction channel; 11. Distal end; 12. Proximal end; 14. Hollow pipe; 15. Side hole channel; 2. Inner core tube; 3. Connecting pipe; 31. Inlet; 311. First branch pipe; 312. One-way valve structure; 32. Outlet; 321. Second branch pipe; 322. Nut structure; 4. Fixed handle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0032] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0033] The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery provided in this utility model is described in reference to... Figures 1-6 ,include

[0034] The sheath 1 has a hollow frustum-shaped structure. The sheath 1 is also provided with an annular sealed channel 10, which includes a flushing channel 101 and a suction channel 102 that are isolated from each other. A plurality of hollow pipes 14 are provided between the inner and outer walls of the sheath 1, which are distributed circumferentially along the tube wall and extend along the long axis of the sheath 1. The flushing channel 101 and the suction channel 102 are respectively connected to the corresponding hollow pipes 14. The lower end of the hollow pipe 14 is connected to the side hole channel 15 opened in the inner wall of the sheath 1.

[0035] Inner core tube 2 is coaxially sleeved inside sheath tube 1, and the bottom of inner core tube 2 is provided with an arc-shaped passivated end;

[0036] The flushing-suction control unit includes a connecting pipe 3 sealed and fixed to the outer wall of the sheath 1. Inside the connecting pipe 3 are parallel and isolated inlet 31 and outlet 32. Inlet 31 is connected to flushing channel 101, and outlet 32 ​​is connected to suction channel 102. Inlet 31 is connected to a positive pressure flushing port via a first branch pipe 311, and outlet 32 ​​is connected to a negative pressure suction port via a second branch pipe 321.

[0037] The fixed handle 4 is located on the outer wall of the sheath 1 at the end away from the connecting tube 3.

[0038] Specifically, in this embodiment, the distal end 11 of the sheath 1 has an endoscope diameter of approximately 10 mm, the proximal end 12 has a diameter slightly larger than the distal end 11, and the wall thickness is 1.5 mm. The hollow channel 14 between the inner and outer walls of the sheath 1 has a diameter of approximately 1 mm. In neuroendoscopic surgery for hypertensive intracerebral hemorrhage, especially for surgery targeting the basal ganglia (the most common site of hypertensive intracerebral hemorrhage, located deep and adjacent to important neurovascular structures), after determining the surgical approach, the brain tissue dilator is slowly inserted into the brain tissue. Because the sheath 1 has an internally hollow frustum-shaped structure, and the outer diameter of the distal end 11 of the sheath 1 is smaller than the outer diameter of the proximal end 12, this structure helps reduce damage to the brain tissue during insertion. It also adapts to the structural characteristics of brain tissue at different depths, gradually creating pathways and providing operating space for surgical instruments. Furthermore, the arc-shaped blunted end at the bottom of the inner core tube 2 can prevent damage to the brain tissue. (Refer to...) Figure 2The lower end of the hollow tube 14 is connected to the side hole channel 15 (2-3 mm from the bottom of the sheath 1) on the inner wall of the sheath 1, instead of extending the hollow tube 14 directly to the lower end of the sheath 1. This design effectively avoids blood clots blocking the hollow tube 14 during surgery. The connection to the side hole channel 15 on the inner wall of the sheath 1 reduces the likelihood of blockage. Even if blockage occurs, the blood clot can be removed by suction or flushing. During hematoma removal, after the brain tissue expander is in place, the inlet 31 of the connecting tube 3 is opened by operating the flushing-suction control unit, and the positive pressure flushing interface is connected to the positive pressure flushing instrument. At this time, the flushing fluid in the positive pressure flushing instrument reaches the surgical field through the first branch tube 311, the inlet 31, the flushing channel 101 of the sheath 1, and the hollow tube 14 connected thereto. Continuous flushing with the flushing fluid keeps the surgical field moist and softens the hematoma, facilitating better removal of the hematoma by the suction device. The surgeon can adjust the irrigation speed and flow rate according to the specific condition of the hematoma. For example, for larger and harder hematomas, the irrigation flow rate can be increased appropriately to more effectively soften the hematoma. When active bleeding occurs during the operation, the surgeon needs to perform hemostasis. First, close the inlet 31 of the irrigation-suction control unit connecting tube 3 to stop the irrigation operation. Then, open the outlet 32 ​​of the connecting tube 3 and connect the second branch tube 321 to the negative pressure suction device. The negative pressure suction device aspirates the blood accumulated in the surgical field through the outlet 32, the suction channel 102 of the sheath 1, and the hollow tube 14 connected thereto. During this process, the suction force can be adjusted by adjusting the second branch tube 321 of the outlet 32 ​​according to the amount of bleeding. For example, if the amount of bleeding is large, the suction force can be increased appropriately to ensure that the blood accumulated in the surgical field can be quickly aspirated; if the amount of bleeding is small, the suction force can be decreased appropriately to avoid excessive suction and damage to brain tissue.

[0039] During hematoma evacuation, the surgeon can flexibly adjust the irrigation and suction operations according to the hematoma's condition, improving the efficiency of hematoma removal. During hemostasis, the surgeon can promptly switch to suction mode, maintaining a clean and clear surgical field. This allows for accurate location of the bleeding point and effective hemostasis, reducing problems such as failure to control bleeding due to blood flooding the bleeding point, repeated instrument changes, and thus shortening surgical time and reducing blood loss. Maintaining a clean and clear surgical field avoids blind hemostasis within accumulated blood, allowing for precise hemostasis of the bleeding point, reducing the risk of damage to normal blood vessels or brain tissue structures, and minimizing surgical complications. Throughout the entire surgical process, whether for hematoma evacuation or hemostasis, this novel brain tissue expander provides excellent operating conditions. Its stable structure and effective function enable smoother surgery and improve the success rate, especially in deep regions such as the basal ganglia that are adjacent to important neurovascular structures, where its advantages are even more evident. Furthermore, this novel brain tissue dilator can be used not only in hypertensive intracerebral hemorrhage surgery, but also in other types of intracerebral hemorrhage surgery. Its irrigation-suction function and excellent structural design provide surgeons with good surgical access and field of vision in different types of intracerebral hemorrhage surgery. In addition to intracerebral hemorrhage surgery, this novel brain tissue dilator can also be used in neuroendoscopic treatment of intracranial tumors. During the operation, by alternately irrigating and suctioning, the surgical field is kept clear and clean, providing a good field of vision and convenience for subsequent surgical operations, further demonstrating its versatility and broad application prospects.

[0040] Reference Figures 1-3 The radius of curvature of the arc-shaped blind end of the inner core tube 2 matches the diameter of the endoscopic segment 11 at the distal end of the sheath 1. This ensures uniform pressure distribution on the brain tissue during insertion. The arc-shaped blunt end of the inner core tube 2 guides the sheath 1 into the brain tissue with a suitable curvature according to its diameter, reducing damage caused by localized pressure concentration. Furthermore, the tip of the inner core tube 2 extends beyond the tip of the sheath 1 to prevent it from dislodging, allowing for easy removal when necessary. Additionally, the blind end at the distal end of the sheath 1, also with an arc-shaped blunt end, further reduces damage to the brain tissue caused by localized pressure concentration.

[0041] Reference Figure 4 and Figure 5The sheath 1 has at least two hollow tubes 14, which are evenly distributed around the circumference of the sheath 1. In this embodiment, the sheath 1 has 14 hollow tubes 14, and the irrigation channel 101 and the suction channel 102 are each connected to 7 hollow tubes 14. During hematoma removal, the 7 hollow tubes 14 connected to the irrigation channel 101 provide multiple evenly distributed outflow paths for the irrigation fluid, which allows the irrigation fluid to more comprehensively cover the surgical field, thereby more effectively softening the hematoma. During hemostasis, when it is necessary to aspirate the accumulated blood in the surgical field, the 7 hollow tubes 14 connected to the suction channel 102 can quickly and evenly aspirate the accumulated blood; since the hollow tubes 14 are evenly distributed around the circumference of the sheath 1, there will be no uneven blood removal in the surgical field due to excessive or insufficient local suction.

[0042] Specifically, refer to Figures 1-4 The second branch conduit 321 has a side hole in its wall, and a nut structure 322 is threaded into the side hole. The ventilation area of ​​the side hole is adjusted by rotating the nut to control the suction force. During hemostasis, when it is necessary to aspirate blood from the surgical field, the suction force is adjusted according to the amount of blood and the bleeding rate. If there is a large amount of blood in the surgical field and the bleeding rate is fast, the surgeon can increase the ventilation area of ​​the side hole by rotating the nut structure 322. This increases the suction force of the negative pressure suction device when aspirating blood through the second branch conduit 321, allowing for faster removal of blood from the surgical field, maintaining a clear surgical field, and facilitating accurate location of the bleeding point for hemostasis. Conversely, if there is little blood in the surgical field or when hemostasis is nearing completion, to avoid excessive suction and damage to brain tissue, the ventilation area of ​​the side hole can be reduced by rotating the nut structure 322, thereby decreasing the suction force. Adjusting the suction force by rotating the nut not only improves the flexibility of the surgical procedure but also helps improve the accuracy of hemostasis and reduce the occurrence of surgical complications.

[0043] Among them, reference Figure 4 A one-way valve structure 312 is provided at the connection between the first branch pipe 311 and the irrigation channel 101. During the operation, the irrigation channel 101 is used to deliver irrigation fluid to the surgical field to keep the surgical field clear and clean. Without the one-way valve structure 312, when the pressure of the irrigation fluid decreases or stops, the fluid in the surgical field may flow back into the irrigation channel 101 through the first branch pipe 311. This may cause the fluid in the surgical field to contaminate the irrigation fluid, thereby affecting the safety and effectiveness of the operation. By preventing the backflow of fluid in the surgical field, the one-way valve structure 312 helps to improve the safety and efficiency of the operation. Doctors can use the irrigation fluid with more confidence without worrying about the risks that fluid backflow may bring, thus allowing them to focus more on the surgical procedure.

[0044] Both the sheath 1 and the inner core tube 2 are made of transparent plastic. The transparent design allows for direct visualization of any bleeding in the brain tissue within the puncture cavity, and also facilitates observation of whether the intended position has been reached. The sheath 1 has graduations on its side wall, allowing the operator to clearly see the depth to which the dilator has penetrated the human tissue.

[0045] During prolonged surgery, the surgeon's hands need to exert a certain amount of force to grip the handle. Therefore, the fixed handle 4 is equipped with anti-slip texture. The anti-slip texture can reduce hand muscle fatigue, allowing the surgeon to maintain a stable grip without excessive force, thereby reducing hand muscle tension.

[0046] Implementation principle: After locating the hematoma during the operation, the dilator is inserted into the hematoma cavity, keeping the axis of the sheath 1 aligned with the long axis of the hematoma. As the insertion depth advances, the inner core tube 2 is removed when the predetermined surgical site is reached. When clearing the hematoma, the inlet 31 of the connecting tube 3 is opened, and a positive pressure irrigation device is connected to continuously irrigate the surgical field. The suction device is operated with one hand by fixing the handle 4 to aspirate the hematoma through the hollow tube 14 of the sheath 1, while maintaining illumination. When active bleeding is detected, the inlet 31 is closed, the outlet 32 ​​is opened, and a negative pressure suction device is connected. The suction force is controlled by adjusting the nut to remove the accumulated blood. After exposing the bleeding point, bipolar electrocoagulation is used for hemostasis. The irrigation and suction modes are alternately switched to maintain a clear surgical field until the hematoma is cleared and hemostasis is achieved.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A brain tissue dilator for continuous irrigation-suction during brain hemorrhage surgery, characterized by, include: The sheath is hollow inside; the outer diameter of the distal endoscope section of the sheath is smaller than that of the proximal endoscope section. The sheath is also provided with an annular sealed channel, which includes a flushing channel and a suction channel that are isolated from each other. There are multiple hollow pipes distributed circumferentially along the tube wall and extending along the long axis of the sheath between the inner and outer walls of the sheath. The flushing channel and the suction channel are respectively connected to the corresponding hollow pipes, and the lower end of the hollow pipes is connected to the side hole channel opened in the inner wall of the sheath. The inner core tube is coaxially sleeved inside the sheath tube, and the bottom of the inner core tube is provided with an arc-shaped passivated end; A flushing-suction control unit includes a connecting pipe sealed and fixed to the outer wall of a sheath. The connecting pipe has an inlet and an outlet arranged side-by-side and isolated from each other. The inlet is connected to a flushing channel, and the outlet is connected to a suction channel. The inlet is connected to a positive pressure flushing port via a first branch pipe, and the outlet is connected to a negative pressure suction port via a second branch pipe. A fixed handle is located on the outer wall of the sheath at the end furthest from the connecting tube.

2. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The radius of curvature of the arc-shaped blind end of the inner core tube matches the diameter of the distal endoscopic segment of the sheath to avoid damage to brain tissue during insertion.

3. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The sheath has at least two hollow tubes, which are evenly distributed along the circumference of the sheath.

4. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The second branch pipe has a side hole in its wall, and a nut structure is threaded into the side hole. The ventilation area of ​​the side hole can be adjusted by rotating the nut to control the suction force.

5. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The sheath has graduations on its side wall.

6. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The connection between the first branch pipeline and the flushing channel is equipped with a one-way valve to prevent backflow of surgical field fluid.

7. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The fixed handle has anti-slip texture.

8. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, Both the sheath and the inner core tube are made of transparent plastic.

9. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The top of the inner core tube extends beyond the top of the sheath tube to prevent the inner core tube from falling off.

10. The brain tissue expander for continuous irrigation and suction during cerebral hemorrhage surgery according to claim 1, characterized in that, The outer diameter of the distal endoscope segment of the sheath is smaller than that of the proximal endoscope segment.

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