Electromagnetic knife electrocoagulation and attraction composite surgical tool and system for endoscopic surgery

Abstract

The invention relates to the technical field of medical apparatus and instruments, and provides an electromagnetic knife electrocoagulation and suction composite surgical tool and system for endoscopic surgery, the tool comprises a double-cavity tube, and the double-cavity tube is provided with a suction tube and an electrode tube which are adjacent in parallel; at least part of the aspirator assembly is arranged in the aspiration tube; at least part of the electrocoagulator assembly is arranged in the electrode tube; the operating handle is arranged on the double-cavity tube; the suction intensity control key is arranged on the operating handle and is used for adjusting the suction intensity of the aspirator assembly; and the electrode stretching control key is arranged on the operating handle and is used for adjusting the stretching of the electrode tip of the electrocoagulator assembly relative to the electrode tube. According to the embodiment of the invention, the mutual interference among neurosurgery operation tools can be obviously reduced or avoided in a cerebral hematoma removal operation under a neuroendoscope, the operation convenience of the operation tools is improved, and the damage of hemostasis to brain tissues is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of medical devices, in particular to an electromagnetic knife electrocoagulation and suction composite surgical tool and system for endoscopic surgery. BACKGROUND

[0002] Stroke is one of the most common causes of death and disability worldwide. The mortality and disability rate of hemorrhagic stroke is much higher than that of ischemic stroke, and most of the surviving patients are left with neurological dysfunction. The core of treatment is to reduce intracranial pressure, control hemorrhage and clear hematoma. Surgical treatment is an effective measure to reduce the risk in the acute stage, but how to balance the hematoma clearance effect, brain injury control and surgical safety is a clinical difficulty.

[0003] Traditional craniotomy surgery is gradually supplemented and optimized by minimally invasive neuroendoscopic surgery due to its large trauma, slow recovery and many complications. Neuroendoscopic surgery has a clear view, small trauma, less bleeding and low complications, can accurately locate the bleeding point, and through a small channel of 2-3 cm into the lesion, reduces brain injury and shortens the recovery and hospitalization time of patients, and becomes an ideal treatment for hemorrhage in important functional areas such as basal ganglia, brain stem and thalamus.

[0004] However, there are obvious bottlenecks in the actual operation of neuroendoscopic surgery: first, the surgical channel is narrow, the instrument operation is limited, and when dealing with large or deep hematoma, the endoscope and the instrument are easily interfered with each other, affecting the stability and precision; second, it is difficult to stop bleeding, there is a lack of special tools, and the endoscope, suction device and bipolar electrocoagulation forceps need to be used at the same time, and single "chopstick operation" or double cooperation all face the problems of instrument interference and asynchronous cooperation; third, the existing hemostatic tools have high risk of thermal injury, which affects the surgical effect (bipolar electrocoagulation forceps are large in size, high in thermal injury and strong in electric current stimulation; monopolar electrocoagulation current is difficult to control and easy to damage nerves and blood vessels); fourth, the suction and hemostatic operations are separated, and the instruments need to be frequently changed, which reduces the efficiency and increases the risk of infection and unstable surgical field, ultimately leading to high risk of multiple tool interference and brain tissue damage in the narrow surgical space.

[0005] In the prior art, hematoma clearance under neuroendoscopy is mostly carried out by placing a cannula in the hematoma cavity. First, the endoscope and suction device are placed to remove the hematoma, and then bipolar electrocoagulation forceps are placed to stop bleeding when active bleeding occurs. The hemostatic mode mainly includes two types: one is bipolar electrocoagulation forceps combined with high-frequency electric knife bipolar mode, which uses 200-500 kHz high-frequency current heat effect to stop bleeding. However, bipolar electrocoagulation forceps are not special for endoscopic surgery, are large in size, difficult to control current, and high temperature easily causes tissue thermal injury and carbonization; the other is monopolar electrode combined with high-frequency electric knife monopolar coagulation mode, which relies on the current between monopolar electrode and neutral electrode to stop bleeding. Although it is small in size and easy to operate, the current flow direction is easy to flow along the nerves and blood vessels, and there is a problem of unintended thermal injury to nerves and blood vessels. Both technologies have not solved the problems of instrument adaptation, safe operation and reduction of thermal injury risk in a narrow space. SUMMARY

[0006] The purpose of the embodiments of the present application is to provide an electromagnetic knife electrocoagulation and suction composite surgical tool and system for endoscopic surgery, which significantly reduces or avoids mutual interference between neurosurgical tools in brain hematoma removal surgery under neuroendoscopy, improves the operation convenience of the surgical tools, and reduces the damage of hemostasis to brain tissue.

[0007] To achieve the above-mentioned purpose, on the one hand, the embodiments of the present application provide an electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery, comprising:

[0008] A double-lumen tube has a suction tube and an electrode tube arranged side by side;

[0009] A suction device assembly is at least partially disposed in the suction tube;

[0010] An electrocoagulator assembly is at least partially disposed in the electrode tube;

[0011] An operation handle is arranged on the double-lumen tube;

[0012] A suction strength control key is arranged on the operation handle for adjusting the suction strength of the suction device assembly;

[0013] An electrode telescoping control key is arranged on the operation handle for adjusting the telescoping of the electrode head of the electrocoagulator assembly relative to the electrode tube.

[0014] Among them, the suction strength control key linearly adjusts the suction strength of the suction device assembly based on the user's sliding operation; the electrode telescoping control key linearly adjusts the telescoping of the electrode head of the electrocoagulator assembly relative to the electrode tube based on the user's sliding operation.

[0015] Among them, the suction strength control key is arranged on the first side of the operation handle, and the electrode telescoping control key is arranged on the second side of the operation handle.

[0016] Among them, the suction device assembly comprises:

[0017] A front suction tube has a suction inlet at its front end;

[0018] A rear suction tube is connected to the rear end of the front suction tube and has a suction tube interface at its rear end for connecting with a suction device main machine;

[0019] A suction unit body is arranged on the rear suction tube and connected to the rear suction tube, and a leakage passage is formed inside the suction unit body;

[0020] A suction control assembly is connected to the suction strength control key and cooperates with the suction unit body to adjust the leakage cross-sectional area of the leakage passage to adjust the suction strength of the suction device assembly.

[0021] The suction unit body sealing sleeve is arranged on the rear suction pipe, the front end of the leakage passage is closed and the rear end is open; a leakage opening is radially arranged on the rear suction pipe, and the leakage opening communicates the leakage passage with the main suction passage in the rear suction pipe.

[0022] The suction control assembly is at least partially inserted into the leakage passage and can move forward and backward relative to the leakage passage to linearly adjust the leakage cross-sectional area of the leakage passage.

[0023] The suction control assembly comprises:

[0024] A front center rod is at least partially inserted into the leakage passage and gap-fitted with the leakage passage;

[0025] A sliding plug is arranged at the front end of the front center rod;

[0026] A rear center rod is connected with the rear end of the front center rod;

[0027] A blocking plug is a hollow circular truncated cone body fixedly sleeved on the front center rod, the hollow circular truncated cone body linearly reduces the leakage cross-sectional area of the leakage passage when moving forward, and the hollow circular truncated cone body linearly increases the leakage cross-sectional area of the leakage passage when moving backward;

[0028] A control key connecting piece is arranged on the rear center rod and connected with the suction intensity control key.

[0029] The electrocoagulator assembly comprises:

[0030] The bipolar electrode assembly comprises a first electrode and a second electrode arranged side by side and isolated from each other, the front end of the first electrode and the front end of the second electrode cooperatively form an electrode head of the electrocoagulator assembly, the rear end of the first electrode and the rear end of the second electrode are connected with one end of an electrocoagulation cable, the other end of the electrocoagulation cable is provided with a main machine connecting port for connecting with an electromagnetic knife main machine;

[0031] An electrocoagulation unit body is arranged in the sliding cavity of the operation handle and connected with the electrode extension and retraction control key, and can slide forward and backward relative to the operation handle to drive the electrode head of the electrocoagulator assembly to linearly extend and retract relative to the electrode tube.

[0032] In some embodiments of the present application, the bipolar electrode assembly comprises:

[0033] The double D-shaped insulating tube comprises a first D-shaped insulating tube and a second D-shaped insulating tube, and the first D-shaped insulating tube and the second D-shaped insulating tube cooperatively form a circular insulating tube;

[0034] a first electrode disposed in the first D-shaped insulating tube, a front end of the first electrode forming a first electrode head in a shape of a spherical wedge;

[0035] a second electrode disposed in the second D-shaped insulating tube, a front end of the second electrode forming a second electrode head in a shape of a spherical wedge, the second electrode head cooperating with the first electrode head to form an electrode head in a shape of a hemisphere.

[0036] In some embodiments of the present application, the electrocoagulation unit body comprises:

[0037] a body upper cover;

[0038] a body lower cover;

[0039] an insulating spacer disposed in a cavity formed by the body upper cover and the body lower cover, and dividing the cavity into a first cavity and a second cavity, a rear end of the first electrode and a connection of the electrocoagulation cable being located in the first cavity, a rear end of the second electrode and a connection of the electrocoagulation cable being located in the second cavity; the cavity is filled with insulating glue to fix the connections and prevent water from entering the connections.

[0040] wherein, an equivalent load composed of the first electrode, the second electrode and the electrocoagulation cable is matched with an output circuit impedance of the host connection port.

[0041] wherein, the operation handle comprises:

[0042] a handle left piece;

[0043] a handle right piece, the handle right piece being inserted and cooperated with the handle left piece.

[0044] In some embodiments of the present application, the front part of the double-cavity tube, the front part of the aspirator assembly, and the front part of the electrocoagulator assembly can be plastically bent.

[0045] wherein, the suction tube interface comprises a tower joint.

[0046] wherein, the material of the sealing plug comprises rubber.

[0047] On the other hand, the embodiments of the present application also provide a composite surgical system, comprising: an aspirator, an electromagnetic knife surgical device, and the electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery.

[0048] It can be seen from the technical solutions provided by the embodiments of the present application that the embodiments of the present application integrate the aspirator assembly and the electrocoagulator assembly and fuse the functions, effectively reducing the number and volume of instruments in the operation space, reducing the risk of mutual interference between the neurosurgery tools, improving the operation flexibility and accuracy, and reducing the operation risk. Moreover, since the suction strength control key and the electrode extension control key are arranged on one operation handle, the user can conveniently operate the electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery with one hand, thereby further improving the operation convenience of the surgical tool. The electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery of the embodiments of the present application is used in cooperation with the electromagnetic knife surgical equipment, can finely control the degree of coagulation hemostasis, reduce the damage to the brain tissue, and improve the operation safety. BRIEF DESCRIPTION OF DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0050] Figure 1 Structure schematic diagram of the electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery in some embodiments of the present application;

[0051] Figure 2 Structure schematic diagram of the aspirator assembly in some embodiments of the present application;

[0052] Figure 3 Structure schematic diagram of the aspirator assembly in some embodiments of the present application;

[0053] Figure 4 Structure schematic diagram of the electrocoagulator assembly in some embodiments of the present application;

[0054] Figure 5 Structure and connection schematic diagram of the electrocoagulation unit main body in some embodiments of the present application;

[0055] Figure 6 Structure schematic diagram of the bipolar electrode of the electrocoagulation unit main body in some embodiments of the present application;

[0056] Figure 7 Schematic diagram of the aspirator assembly assembled into the operation handle in some embodiments of the present application;

[0057] Figure 8 Schematic diagram of the electrocoagulator assembly assembled into the operation handle in some embodiments of the present application;

[0058] Figure 9 Structure diagram of the operating handle in some embodiments of the present application;

[0059] Figure 10 Application scenario diagram of the electromagnetic knife electrocoagulation and suction composite surgical tool connected with the electromagnetic knife main machine in endoscopic surgery in some embodiments of the present application.

[0060]

Explanation of reference numerals

[0061] 100, suction assembly; 200, electrocoagulator assembly; 300, double-lumen tube; 400, operating handle; 101, front suction tube; 102, suction unit main body; 103, rear suction tube; 104, suction control assembly; 105, suction tube interface; 1021, main suction channel; 1022, leakage channel; 1023, leakage port; 1041, sliding plug; 1042, front center rod; 1043, blocking plug; 1044, control key connector; 1045, rear center rod; 201, bipolar electrode assembly; 202, electrocoagulation unit main body; 203, electrocoagulation cable; 204, electrocoagulation cable fixing tube; 2011, first electrode head; 2012, second electrode head; 2013, double-D-shaped insulating tube; 2014, first electrode; 2015, second electrode; 2021, main body upper cover; 2022, main body lower cover; 2023, insulating spacer; 2031, outer insulating layer; 2032, conductive shielding layer; 2033, insulator; 2034, center conductor; 301, suction tube; 302, electrode tube; 401, handle left piece; 402, handle right piece; 403, suction intensity control key; 404, electrode extension control key; 405, handle front piece; 406, handle middle piece; 407, handle rear piece. DETAILED DESCRIPTION

[0062] In order to enable persons skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should fall within the protection scope of the present application. For example, in the following description, forming a second component above a first component can include embodiments in which the first component and the second component are formed in direct contact, and can also include embodiments in which the first component and the second component are formed in indirect contact (i.e., additional components can be included between the first component and the second component).

[0063] Moreover, some embodiments can use relative terms such as "above", "below", "top", "bottom", and the like in describing the relationship between one element or component and another in a drawing. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the drawings. For example, if a device in the drawings is inverted, elements described as "below" or "under" other elements or components would then be oriented "above" the other elements or components. Likewise, if a device in the drawings is turned over, elements described as "above" other elements or components would then be oriented "below" the other elements or components.

[0064] Figure 1 A structural schematic diagram of an electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery in some embodiments of the present application is shown. The electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery can include a suction device assembly 100, an electrocoagulator assembly 200, a double-lumen tube 300, an operating handle 400, a suction strength control key 403, and an electrode extension control key 404, etc. The double-lumen tube 300 has a suction tube (a thick tube shown in Figure 1 ) and an electrode tube (a thin tube shown in Figure 1 ) arranged side by side; the suction device assembly 100 is at least partially disposed in the suction tube; the electrocoagulator assembly 200 is at least partially disposed in the electrode tube; the operating handle 400 is arranged on the double-lumen tube 300; the suction strength control key 403 and the electrode extension control key 404 are both arranged on the operating handle 400; wherein the suction strength control key 403 is used to adjust the suction strength of the suction device assembly 100; the electrode extension control key 404 is used to adjust the extension of the electrode head of the electrocoagulator assembly 200 relative to the electrode tube.

[0065] The suction device assembly and the electrocoagulator assembly are integrated and functionally fused in the embodiments of the present application, effectively reducing the number and volume of instruments in the surgical space, reducing the risk of mutual interference between neurosurgical surgical tools, improving operational flexibility and accuracy, and reducing surgical risk. Moreover, since the suction strength control key and the electrode extension control key are both arranged on an operating handle, a user (such as a doctor) can conveniently operate the electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery with one hand, thereby further improving the operational convenience of the surgical tool. The electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery in the embodiments of the present application is used in cooperation with an electromagnetic knife surgical device (which can also be referred to as an electromagnetic knife), which can finely control the degree of coagulation hemostasis, reduce damage to brain tissue, and improve surgical safety.

[0066] Reference Figure 1As shown, the suction tube of the suction assembly 100 and the bipolar electrode assembly of the electrocoagulator assembly 200 pass through the thick tube and the thin tube of the double-lumen tube 300 respectively, and are fixed together by the operation handle 400. When fixed, the double-lumen tube 300 is installed at the chamfered end of the handle, and the suction tube interface 105 of the suction assembly 100 and the electrocoagulation cable 203 of the electrocoagulator assembly 200 extend out of the other end of the operation handle 400. The other end of the electrocoagulation cable 203 is provided with a host connection port, which can be plugged on the output port of the electro-magnetic knife host when in use. The suction tube interface 105 is connected with a suction tube line, and the other end of the suction tube line is connected with a suction host (such as a negative pressure suction source). Taking a brain hemorrhage surgery as an example, when in use, the user holds the operation handle, and inserts the end (front end) provided with the suction tube and the bipolar electrode head together with the neuroendoscope into the surgical sheath tube, and under the observation and guidance of the endoscope image, performs the suction and removal of the brain hemorrhage focus and the coagulation and hemostasis of the bleeding point; correspondingly, the end provided with the electrocoagulation cable 203 and the suction tube line is the rear end.

[0067] In the embodiments of the present application, the side-by-side and adjacent companion design of the electrocoagulator assembly 200 and the suction assembly 100 makes the electrode head of the electrocoagulator assembly 200 and the suction tube interface of the suction assembly 100 very close, and easy to realize rapid matching operation. Taking a brain hemorrhage surgery as an example, the suction tube interface of the suction assembly 100 can be used to perform the suction and removal of the brain hemorrhage focus, and if a bleeding point is found, the electrode head of the electrocoagulator assembly 200 can be used to perform the coagulation and hemostasis of the bleeding point in time, without switching the surgical equipment back and forth (i.e. alternately using the suction assembly and the electro-magnetic knife surgical equipment) as in the prior art.

[0068] In some embodiments of the present application, the suction strength control key 403 can be arranged on the first side (such as the left side) of the operation handle 400, and the electrode extension control key 404 can be arranged on the second side (such as the right side) of the operation handle. In this way, the user can conveniently control the suction strength of the suction assembly and the extension of the electrode head of the electrocoagulator assembly by different fingers of a single hand. For example, in some embodiments of the present application, the user can use the thumb to operate the suction strength control key 403, and the front and back sliding can control the suction strength; the user uses the index finger to operate the electrode extension control key 404, and the front and back sliding can extend or retract the bipolar electrocoagulation electrode (a kind of electrode head of the electrocoagulator assembly), which is used to coagulate and hemostasis the found bleeding point.

[0069] In some embodiments of the present application, the front part of the double-lumen tube 300, the front part of the suction device assembly 100, and the front part of the electrocoagulator assembly 200 can be plastically bent, that is, the suction device assembly 100 and the electrocoagulator assembly 200 can be plastically bent together with the double-lumen tube 300. Through this plastic bending design, the suction tube can be manually bent at different positions by a certain angle according to the specific use during use, so as to facilitate the operation in the surgical space and prevent the operation position of the electromagnetic knife electrocoagulation and suction composite surgical tool from conflicting with the endoscope or other instruments, and the electrode can be restored to its original state after use.

[0070] In some embodiments of the present application, the suction strength control key 403 can linearly adjust the suction strength of the suction device assembly 100 based on the sliding operation of the user; and the electrode extension control key 404 can linearly adjust the extension of the electrode head of the electrocoagulator assembly 200 relative to the electrode tube based on the sliding operation of the user. In this way, it is beneficial to realize precise control of suction, coagulation hemostasis and other functions, thereby further improving the precision of operation and improving the safety of surgery.

[0071] In combination with Figure 2 As shown in the drawings, in some embodiments of the present application, the suction device assembly can include a front suction tube 101, a suction unit body 102, a rear suction tube 103, and a suction control assembly 104. The front end of the front suction tube 101 forms a suction inlet; the rear suction tube 103 is connected in communication with the rear end of the front suction tube 101, and the rear end of the rear suction tube 103 forms a suction tube interface 105 for connecting with a suction device main machine; the suction unit body 102 is arranged on the rear suction tube 103 and connected in communication with the rear suction tube 103, and a leakage passage is formed inside the rear suction tube 103; the suction control assembly 104 is connected with the suction strength control key 403 and connected and matched with the suction unit body 102, for adjusting the leakage cross-sectional area of the leakage passage, so as to adjust the suction strength of the suction device assembly.

[0072] In some embodiments of the present application, the front suction tube 101 can be made of metal material and can withstand repeated bending. One end of the front suction tube 101 is connected with the front end hole of the main suction passage of the suction unit body 102. The rear suction tube 103 is an internal passage and can be made of metal material or plastic. One end of the rear suction tube 103 is connected with the rear end hole of the main suction passage of the suction unit body 102, and the other end is connected with the straight tube end of the suction tube interface 105. Each port connection adopts welding or bonding to ensure the sealing performance of the entire suction pipeline. In some embodiments of the present application, the suction tube interface 105 adopts a pagoda joint structure and can be suitable for a wide range of hose connections.

[0073] In some embodiments of the present application, the double-lumen tube 300 can be made of soft plastic material (such as silicone rubber or PE).

[0074] In combination Figure 3 As shown in some embodiments of the present application, the suction control assembly 104 can include a sliding plug 1041, a front center rod 1042, a blocking plug 1043, a control key connector 1044, and a rear center rod 1045. The suction unit body 102 includes a main suction channel 1021, a leakage channel 1022, and a leakage port 1023. The suction unit body 102 is sealingly fitted on the rear suction pipe 103, the front end of the leakage channel 1022 is closed and the rear end is open; the leakage port 1023 is radially opened on the rear suction pipe 103, the leakage port 1023 communicates the leakage channel 1022 with the main suction channel 1021 in the rear suction pipe 103; wherein the main suction channel 1021 penetrates left and right, and the leakage port 1023 penetrates to the bottom of the suction unit body 102, the bottom hole is a processing process hole, which is embedded with a pin after assembly and remains sealed.

[0075] In some embodiments of the present application, the front center rod 1042 is at least partially inserted into the leakage channel 1022 and gap-fitted with the leakage channel, the front center rod 1042 can move forward and backward relative to the leakage channel 1022 to linearly adjust the leakage cross-sectional area of the leakage channel 1022; the sliding plug 1041 is arranged at the front end of the front center rod 1042; the rear center rod 1045 is fixedly connected (e.g. threaded connection) with the rear end of the front center rod 1042; the blocking plug 1043 is a hollow circular truncated cone body (a circular truncated cone body with a central through hole) fixedly fitted on the front center rod 1042, the front end of the blocking plug 1043 is a small end and the rear end is a large end; the blocking plug 1043 is matched with the hole diameter of the leakage channel 1022 and can change the cross-sectional area of the leakage channel, so that by moving the blocking plug 1043 forward and backward to block the leakage channel 1022, the leakage cross-sectional area of the leakage channel 1022 can be linearly adjusted, thereby linearly adjusting the suction strength; the control key connector 1044 is arranged on the rear center rod 1045 and connected with the suction strength control key.

[0076] In some embodiments of the present application, when the suction function is used, the negative pressure suction source can be started, and the suction strength control key 403 is pushed by the thumb to adjust the suction strength. When pushed to the farthest front, the leakage channel 1022 of the internal suction pipeline is in a sealed state, and gas can only enter from the front end of the aspirator assembly 100, so the suction strength is the strongest and the internal negative pressure is the largest. If the suction strength needs to be reduced during use, the suction strength control key 403 is pushed backward, the leakage cross-sectional area of the leakage channel 1022 gradually increases, the internal negative pressure decreases, and the suction strength at the front end gradually decreases. Stopping during the pushing process can maintain the current suction strength. If the suction strength needs to be increased again, the suction strength control key 403 can be pushed forward again to increase the suction strength again.

[0077] In some embodiments of the present application, the front center rod 1042 can have a different outer diameter than the rear center rod 1045, and a different thread diameter, which can be used to distinguish and control the direction of the control key connector 1044. The blocking plug 1043 can be made of hard rubber or other materials, so that it can be slightly deformed when it is blocked, so that the blocking plug 1043 can play a sealing role when it is inserted into the leakage passage 1022. The sliding plug 1041 is fixed on the thread at the other end of the front center rod 1042 and slides in the leakage passage 1022 following the front center rod 1042, playing the role of a sliding shaft. To ensure smooth sliding of the sliding plug 1041 in the leakage passage 1022, its material can be selected from low-friction wear-resistant plastics. The rear center rod 1045 is fixed in the operating handle and has a fixed sliding passage to ensure the linear movement of the overall suction control assembly 104, so its material can also be selected from low-friction wear-resistant plastics. The control key connector 1044 is provided with two small holes for connecting the rear suction strength control key 403 and providing forward and backward sliding with the fingers.

[0078] In this way, the suction assembly 100 is composed of the above-mentioned parts and connection methods to form a suction assembly with adjustable leakage passage cross-sectional area. The front end of the front center rod 1042 (i.e. the suction inlet) can be used to contact the brain hematoma and remove the brain hematoma. The suction strength is adjusted by the forward and backward sliding of the suction strength control key, which drives the hollow conical blocking plug 1043 to block the leakage passage 1022, changes the leakage cross-sectional area of the leakage passage 1022, and thus changes the internal negative pressure value and further changes the suction strength.

[0079] The conventional suction device has a water droplet-shaped leakage opening on the adjustment surface; by pressing the blocking plug with the thumb, the internal suction strength of the suction device can be maximized. Moving the position of the thumb to expose part of the leakage opening can change the leakage opening area and thus change the suction strength. The conventional suction device requires the thumb to press the leakage opening hard to achieve complete or partial sealing of the leakage opening, so the doctor is more tired during operation; at the same time, pressing hard can make the hand unstable in controlling the position of the suction tube, which is easy to cause suction deviation and affect the operation precision. In addition, the water droplet-shaped leakage opening cannot be accurately controlled by pressing, so the suction flow cannot be linearly or regularly adjusted, and the reproducibility is also poor.

[0080] Compared with the traditional suction device, the suction strength control key can be easily controlled to adjust the position of the blocking plug, thereby adjusting the suction strength. In addition, in the embodiment of the application, the diameter and shape of the blocking plug are fixed, and the diameter of the leakage passage is also fixed, so that different positions of the blocking plug represent different blocking areas, i.e. fixed suction strength, and the reproducibility is very high. When adjusting, it is not necessary to press hard, but only to slide the adjustment suction strength control key slightly, which greatly saves the physical strength of the doctor and can accurately control the suction position. Through accurate design and manufacture of the size and shape of the blocking plug, linear change of the suction strength and the position of the adjustment key can be realized, thereby realizing accurate control.

[0081] Reference Figure 4 As shown in the drawings, in some embodiments of the application, the electrocoagulator assembly can include a bipolar electrode assembly 201 and an electrocoagulation unit body 202. The bipolar electrode assembly 201 has a first electrode and a second electrode arranged side by side and isolated from each other, the front ends of the first electrode and the second electrode cooperate to form the electrode head of the electrocoagulator assembly, the rear ends of the first electrode and the second electrode are connected to one end of an electrocoagulation cable 203, the other end of the electrocoagulation cable 203 is provided with a host connection port for connecting with an electromagnetic knife host; the electrocoagulation unit body 202 is arranged in the sliding cavity of the operating handle and connected with the electrode extension control key, and can slide forward and backward relative to the operating handle to drive the electrode head of the electrocoagulator assembly to linearly extend and retract relative to the electrode tube.

[0082] In combination Figure 5 And Figure 6 As shown in the drawings, in some embodiments of the application, the bipolar electrode assembly 201 includes a double-D-shaped insulating tube 2013, a first electrode 2014 (left electrode) and a second electrode 2015 (right electrode); the double-D-shaped insulating tube 2013 has a first D-shaped insulating tube and a second D-shaped insulating tube, which cooperate to form a circular insulating tube; the first electrode 2014 is arranged in the first D-shaped insulating tube, and the front end thereof forms a first electrode head 2011 (left electrode head) in the shape of a ball wedge; the second electrode 2015 is arranged in the second D-shaped insulating tube, and the front end thereof forms a second electrode head 2012 (right electrode head) in the shape of a ball wedge, which cooperates with the first electrode head 2011 to form a hemispherical electrode head.

[0083] In combination Figure 5 And Figure 6As shown, in some embodiments of the present application, the electrocoagulation unit body 202 is a connection cavity of the bipolar electrode assembly 201 and the electrocoagulation cable 203; the electrocoagulation unit body comprises: a body upper cover 2021, a body lower cover 2022 and an insulating spacer 2023. The insulating spacer 2023 is arranged in the cavity formed by the cooperation of the body upper cover 2021 and the body lower cover 2022, and divides the cavity into a first cavity (left cavity) and a second cavity (right cavity); the rear end of the first electrode 2014 and the connection of the electrocoagulation cable 203 are located in the first cavity, and the rear end of the second electrode 2015 and the connection of the electrocoagulation cable 203 are located in the second cavity; the cavity is filled with insulating glue to fix the connection and prevent water from entering the connection.

[0084] In combination Figure 5 And Figure 6 As shown, in some embodiments of the present application, the body lower cover 2022 has a right side opening as a through hole of the bipolar electrode assembly. The center conductor 2034 of the electrocoagulation cable 203 and one end of the second electrode 2015 of the bipolar electrode assembly 201 are connected together by welding, and are insulated by an external heat shrink sleeve and located in the right cavity of the body lower cover 2022. The conductive shielding layer 2032 of the electrocoagulation cable 203 and one end of the first electrode 2014 of the bipolar electrode assembly 201 are connected together by welding, and are insulated by an external heat shrink sleeve and located in the first cavity of the body lower cover 2022. The body upper cover 2021 and the body lower cover 2022 are buckled together, and the electrocoagulation cable extends out from the left side hole of the body upper cover 2021. The four holes around the body lower cover 2022 and the four columns around the body upper cover 2021 function as positioning and installation.

[0085] In combination Figure 5 And Figure 6 As shown, in some embodiments of the present application, the other end of the first electrode 2014 of the bipolar electrode assembly 201 and the first electrode head 2011 are connected together by welding, and the other end of the second electrode 2015 and the second electrode head 2012 are also connected together by welding, and are respectively located in the left and right two D-shaped cavities of the double D-shaped insulating tube 2013. The left and right electrode heads are exposed outside the double D-shaped insulating tube 2013, and the planar parts of the two electrode heads are adhered to the insulating layer in the middle of the double D-shaped insulating tube 2013. The semi-spherical parts of the left and right electrode heads are exposed, serving as the two electrodes of bipolar electrocoagulation.

[0086] Thus, the coagulator assembly is composed of the above-mentioned components and connection modes, and the high-frequency energy signal output by the electromagnetic knife main machine is transmitted to the left and right electrode heads of the bipolar electrode head through the transmission system composed of the coagulation cable 203, the coagulation unit body 202 and the bipolar electrode assembly 201, and the tissue to be coagulated and hemostatic is contacted by the two electrode heads, and the tissue is coagulated and hemostatic by the heat effect of the high-frequency current flowing between the two electrode heads.

[0087] In some embodiments of the present application, when the coagulation function is used, the coagulation cable is connected to the bipolar coagulation output interface of the electromagnetic knife main machine through the main machine connection port, and the electromagnetic knife main machine is started. The electrode extension control key is pushed forward, and the bipolar coagulation electrode head is extended out of the double-lumen tube. The extension length can be controlled by the distance of pushing the electrode extension control key. The position of the bipolar electrode head is moved, and when the electrode head contacts the tissue to be coagulated, the power output is performed by stepping on the foot switch of the electromagnetic knife main machine, so that the electrode head coagulates the tissue to stop bleeding. After the coagulation and hemostasis is completed, the coagulation electrode head can be retracted into the double-lumen tube by reversing the electrode extension control key, thereby reducing the obstruction to the endoscopic field.

[0088] In some embodiments of the present application, the equivalent load composed of the first electrode, the second electrode and the coagulation cable is matched with the output circuit impedance of the main machine connection port to reduce the high-frequency energy loss in the transmission process; the transmission of the electromagnetic knife energy signal is first transmitted through the coagulation cable with fixed characteristic impedance, and then the high-frequency signal is connected to the two electrode rods of the bipolar electrode assembly in the coagulation unit body, and transmitted to the electrode head. The electrode and the insulation structure of the bipolar electrode assembly are also relatively fixed, and the equivalent impedance is also fixed, which is convenient for impedance matching with the output circuit of the electromagnetic knife main machine, thereby reducing the high-frequency energy loss in the transmission process. The coagulation unit body can move forward and backward in the sliding space in the operation handle, thereby driving the bipolar electrode assembly to extend and retract in the electrode tube of the double-lumen tube.

[0089] Traditional bipolar coagulation is to use bipolar forceps, and two forceps tips contact or clamp the tissue to be coagulated, and the heat effect of the high-frequency current flowing between the two forceps tips is used for coagulation and hemostasis. The volume of the bipolar forceps is large, and the doctor needs to operate with the thumb and index finger together, which is not suitable for surgery in a narrow space. The bipolar electrode structure of the bipolar electrode assembly proposed in the embodiments of the application is a bipolar electrode with a fixed distance. The overall diameter of the electrode can be controlled to be less than 2.5 mm, which is much smaller than the size of the two forceps tips. The bipolar electrode structure has a certain rigidity and can be pushed to slide in the insulating tube to realize the telescopic operation. Connecting the electrode structure with the bipolar coagulation mode of the electromagnetic knife, using its characteristics of small electric stimulation, small thermal damage, fine control of coagulation range and speed, it is very suitable for coagulation and hemostasis treatment of cerebral hemorrhage. In summary, the electromagnetic knife bipolar coagulation technology is used for coagulation and hemostasis in the embodiments of the application, which can solve the problems of local high temperature, possible damage to adjacent tissues, large instrument volume, single-handed operation difficulty and low position control precision in traditional bipolar coagulation and hemostasis technology, and comprehensively improve the safety and efficiency of the operation.

[0090] Reference Figure 9 As shown in the drawings, in some embodiments of the application, the operation handle comprises: a handle left piece 401 and a handle right piece 402; the handle right piece 402 is inserted and matched with the handle left piece 401. Specifically, the handle left piece 401 is installed around the mounting plane and is provided with a raised positioning column, and the handle right piece 402 is provided with a positioning hole around the mounting plane, and the two cooperate to play a positioning and mounting role.

[0091] Reference Figure 7 As shown in the drawings, in some embodiments of the application, the suction unit body 102 in the suction unit assembly is installed in the fixed groove at the front end (with a chamfered end) of the handle left piece 401, the control key connecting piece 1044 passes through the hole in the middle of the handle left piece 401, and the suction strength control key 403 is inserted on the control key connecting piece 1044 from the outside of the handle. There are two positioning columns on the suction strength control key 403, which are inserted into the two holes of the control key connecting piece 1044. After installation, the suction strength control key 403 is flatly attached to the control key connecting piece 1044. The double-lumen tube penetrates the hole in the handle front piece 405, and after extending 10 mm, it is bonded on the inside of 405. The suction tube 301 is sleeved on the front suction tube 101. The handle front piece 405 is bonded on the inside of the handle front piece 405.

[0092] Reference Figure 8As shown in some embodiments of the present application, the electrocoagulator assembly is installed in the right piece 402 of the handle, the boss in the middle of the cylindrical body 202 of the electrocoagulation unit extends out of the opening in the side of the right piece 402 of the handle, and the two bosses on one side of the electrode extension control key 404 are inserted into the two positioning and mounting holes of the boss of the electrocoagulation unit body 202, thereby playing a positioning and mounting role. The electrocoagulation cable 203 is inserted into the electrocoagulation cable fixing tube 204, and when the electrocoagulator assembly moves forward and backward in the handle, the cable guiding and positioning role is played. The middle piece 406 and the rear piece 407 of the handle are inserted into the fixing grooves in the middle and rear of the right piece 402 of the handle, thereby playing a limiting and positioning role on the electrocoagulation cable fixing tube 204 and the electrocoagulation cable 203, respectively.

[0093] Reference Figure 10 As shown in some embodiments of the present application, the end of the output cable of the composite surgical tool (i.e. the electromagnetic knife electrocoagulation and suction composite surgical tool for endoscopic surgery) is provided with a plug connected with the electromagnetic knife main machine. The main machine connector of the output cable is a standard four-core circular push-pull self-locking connector, which is used in cooperation with the output interface of the electromagnetic knife main machine. The output cable is an electrocoagulation cable with a characteristic impedance of 75Ω, which transmits high-frequency power signals in a bipolar mode. The suction pipe interface is connected with the negative pressure suction device in the operating room through a suction pipe with appropriate size.

[0094] In use, the electromagnetic knife main machine is adjusted to the bipolar coagulation mode, and the required output power parameters are set. The negative pressure suction device in the operating room is turned on. When it is necessary to use the suction function to remove blood clots, the front end of the front suction pipe of the surgical tool is aimed at the blood clots or blood to be removed, and the suction intensity is adjusted by the right thumb, so that the blood clots or blood are gradually sucked away at a suitable suction intensity. When a bleeding point is found, coagulation hemostasis is needed, the electrode extension control key on the operation handle is operated to make the bipolar electrode head extend out of the electrode tube of the double-lumen tube, and the bipolar electrode head is close to the tissue to be treated. The foot pedal switch of the electromagnetic knife main machine is stepped on, high-frequency power signals are output to the bipolar electrode head, the electrode head is in contact with the tissue to be coagulated, and the tissue is coagulated and hemostatic by using the thermal effect of the high-frequency current between the two electrode heads.

[0095] In summary, the composite surgical tool of the embodiments of the present application has the following beneficial technical effects:

[0096] 1. The bipolar coagulation mode of the electromagnetic knife is used in cooperation with the integrated and compact bipolar electrode to coagulate and hemostatic the bleeding points in the neuroendoscopic brain hematoma removal surgery. The high-frequency (4.2MHz) electric power is used to implement coagulation hemostasis, so that the coagulation hemostasis process is fine and controllable, the hemostasis is reliable, the phenomenon of uncontrollable coagulation hemostasis in the bipolar mode of the high-frequency electrotome, such as excessive coagulation and eschar, is avoided, and the safety of hemostasis is improved. At the same time, the high working frequency makes the coagulation area concentrated between the two electrodes, without spreading outward, thereby avoiding thermal damage to the surrounding tissue, especially the nerve tissue, and reducing the occurrence of complications.

[0097] 2. The compact bipolar electrode of the coagulator assembly has small diameter and small volume, greatly reduces the size of the electrode compared with the commonly used bipolar coagulation forceps, is suitable for surgery in a narrow area matched with a neuroendoscope, and reduces mutual interference between surgical instruments. The distance between the two electrode heads is fixed and does not need to be operated. The bipolar electrode is connected with the suction tube through a double-lumen tube, the electrode head is very close to the suction tube port, and the operation is easy and fast. The bipolar electrode is flexible and can be shaped together with the suction tube, which is convenient for different application scenarios.

[0098] 3. The suction device assembly uses a piston type sealing structure to adjust the area of the leakage passage, thereby adjusting the suction strength. Compared with the operation of pressing the leakage port with the thumb in the traditional suction device, the surgeon's physical strength is greatly saved, and the position of the suction device is easily controlled accurately. At the same time, the suction strength can be easily linearly controlled, and the reproducibility of the control is greatly improved, thereby realizing accurate control of the suction function.

[0099] 4. The suction function and the bipolar coagulation hemostasis function are integrated in one surgical tool, the blood clot removal function and the coagulation hemostasis of the bleeding point are realized without changing the surgical tool, the surgery is quickly performed, and the surgery time is saved. The volume of the surgical tool entering the surgical channel is only about 30% larger than that of the suction tube, and there is no problem of blocking the field of view and mutual interference of multiple surgical tools. The two functions are integrated on one surgical handle, the surgeon holds it with one hand, and controls and adjusts it through the thumb and the index finger, which is convenient to operate and does not have the problems of difficult operation and the need for two people to cooperate.

[0100] The embodiments of the present application also provide a composite surgical system, which can include: a suction device, an electromagnetic knife surgical device, and an endoscopic surgical electromagnetic knife coagulation and suction composite surgical tool; wherein the endoscopic surgical electromagnetic knife coagulation and suction composite surgical tool is connected with the suction device and the electromagnetic knife surgical device respectively.

[0101] For the convenience of description, the above device is described as various units in function. Of course, the functions of the units can be implemented in the same or multiple hardware structures in the implementation of the present application.

[0102] It should also be understood that, in the embodiments of the present application, the term "and / or" only describes the association relationship of the associated objects, and means that there can be three relationships. For example, A and / or B can mean that A exists alone, A and B exist together, and B exists alone. In addition, the character " / " in this paper generally means that the front and rear associated objects are in an "or" relationship.

[0103] It should also be noted that the terms "comprising", "comprises", "including", "includes" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a device or an apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or even include elements that are inherent to such device or apparatus. An element proceeded by "comprises a" does not, without further constraints, exclude the presence of additional identical elements in the device or apparatus that includes the recited element.

[0104] The embodiments of the present application only illustrate the technical solutions of the present application and are not used to limit the present application. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A combined electromagnetic scalpel electrocoagulation and suction surgical tool for endoscopic surgery, characterized in that, include: A dual-lumen tube with adjacent suction tubes and electrode tubes arranged side by side; The suction device assembly is at least partially disposed within the suction tube; An electrocoagulation assembly, at least partially housed within the electrode tube; An operating handle is provided on the dual-lumen tube; A suction intensity control key is located on the operating handle and is used to adjust the suction intensity of the suction device assembly; An electrode extension / retraction control key is located on the operating handle and is used to adjust the extension / retraction of the electrode head of the electrocoagulator assembly relative to the electrode tube.

2. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 1, characterized in that, The attraction intensity control key linearly adjusts the attraction intensity of the attractor assembly based on the user's sliding operation; The electrode extension / retraction control key linearly adjusts the extension / retraction of the electrode head of the electrocoagulator assembly relative to the electrode tube based on the user's sliding operation.

3. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 1, characterized in that, The attraction intensity control key is located on the first side of the operating handle, and the electrode extension control key is located on the second side of the operating handle.

4. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 1, characterized in that, The aspirator component includes: The front suction tube has a suction port at its tip. The rear suction tube is connected to the rear end of the front suction tube, and its rear end forms a suction tube interface for connection with the suction device main unit. The main body of the suction unit is disposed on and connected to the rear suction tube, and a leakage channel is formed inside it; The suction control component, connected to the suction intensity control key and cooperating with the suction unit body, is used to adjust the leakage cross-sectional area of ​​the leakage channel to adjust the suction intensity of the suction device component.

5. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 4, characterized in that, The main body of the suction unit is sealed and fitted onto the rear suction tube. The front end of the leakage channel is closed and the rear end is open. A leakage port is radially opened on the rear suction tube, and the leakage port connects the leakage channel with the main suction channel inside the rear suction tube. The suction control component is at least partially inserted into the leakage channel and is movable back and forth relative to the leakage channel to linearly adjust the leakage cross-sectional area of ​​the leakage channel.

6. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 5, characterized in that, The attraction control component includes: The front center rod is at least partially inserted into the leakage channel and has a clearance fit with the leakage channel. A sliding plug is located at the front end of the front center rod; The rear center rod is connected to the rear end of the front center rod; The sealing plug is a hollow frustum fixedly sleeved on the front center rod. The hollow frustum moves forward to linearly reduce the leakage cross-sectional area of ​​the leakage channel, and the hollow frustum moves backward to linearly increase the leakage cross-sectional area of ​​the leakage channel. A control key connector is disposed on the rear center rod and connected to the attraction intensity control key.

7. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 1, characterized in that, The electrocoagulator assembly includes: The bipolar electrode assembly has a first electrode and a second electrode that are parallel and adjacent to each other and isolated from each other. The front ends of the first electrode and the front ends of the second electrode cooperate to form the electrode head of the electrocoagulation assembly. The rear ends of the first electrode and the rear ends of the second electrode are connected to one end of the electrocoagulation cable. The other end of the electrocoagulation cable is provided with a host connection port for connecting to the electromagnetic knife host. The main body of the electrocoagulation unit is disposed in the sliding cavity of the operating handle and connected to the electrode extension control key. It can slide back and forth relative to the operating handle to drive the electrode head of the electrocoagulator assembly to extend and retract linearly relative to the electrode tube.

8. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 7, characterized in that, The bipolar electrode assembly includes: A double D-shaped insulating tube, comprising a first D-shaped insulating tube and a second D-shaped insulating tube, wherein the first D-shaped insulating tube and the second D-shaped insulating tube cooperate to form a circular insulating tube; The first electrode is disposed inside the first D-shaped insulating tube, and its front end forms a spherical wedge-shaped first electrode head; The second electrode is disposed inside the second D-shaped insulating tube, and its front end forms a spherical wedge-shaped second electrode head. The second electrode head cooperates with the first electrode head to form a hemispherical electrode head.

9. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 7, characterized in that, The main body of the electrocoagulation unit includes: Main body cover; Main body bottom cover; An insulating spacer is disposed within a cavity formed by the upper cover and the lower cover of the main body, dividing the cavity into a first cavity and a second cavity. The connection between the rear end of the first electrode and the electrocoagulation cable is located in the first cavity, and the connection between the rear end of the second electrode and the electrocoagulation cable is located in the second cavity. The cavity is filled with insulating adhesive to fix the connection and prevent water from entering the connection.

10. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 7, characterized in that, The equivalent load consisting of the first electrode, the second electrode, and the electrocoagulation cable is impedance matched to the output circuit of the host connection port.

11. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 1, characterized in that, The operating handle includes: Left handle piece; The right handle piece is inserted into and engages with the left handle piece.

12. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 1, characterized in that, The front portions of the dual-lumen tube, the front portions of the suction assembly, and the front portions of the electrocoagulation assembly are all capable of plastic bending.

13. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 4, characterized in that, The suction tube interface includes a pagoda connector.

14. The endoscopic surgical electromagnetic scalpel electrocoagulation and suction combined surgical tool as described in claim 6, characterized in that, The sealing material includes rubber.

15. A composite surgical system, characterized in that, include: Aspirator, electromagnetic scalpel surgical device, and the endoscopic surgical electromagnetic scalpel electrocoagulation and aspiration combined surgical tool as described in any one of claims 1-14.

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