Electrosurgical resectoscope with enhanced drainage

Abstract

The utility model discloses an electrotome of enhanced drainage function, it includes the sheath and the inner sheath, the sheath is set in the inner sheath outside and forms the flushing water channel between both, is equipped with the passageway in the inner sheath, the rear end lateral wall of sheath is fixed with the flush seat of flush water channel intercommunication, is equipped with a plurality of flush holes of flush water channel intercommunication on the front end lateral wall of sheath, the rear end of inner sheath is fixed with the fixed seat, flush seat seals the sleeve of the front end of fixed seat, the front end inner and outer lateral wall of inner sheath is synchronous and is outwardly convex and forms the boss of the close contact with sheath front end port, flush water channel is located between the boss and fixed seat, the rear end of boss is close to fixed seat, the front end of boss is away from fixed seat, the rear end of boss has part and is not outwardly convex and forms one or more than one and is spaced distribution and corresponds to the intercommunication notch of flush hole.

Description

Technical Field

[0001] This utility model relates to the technical field of diaphragm support, and in particular to an electrosurgical resection mirror with enhanced drainage function. Background Technology

[0002] With the development of modern medical technology, the use of electroresection to perform examinations and surgeries deep inside patients has become a very common medical technique. Electroresection is often used in minimally invasive urological surgeries, such as those for benign prostatic hyperplasia. Generally, electroresection requires an electrolyte environment. The cutting electrode is inserted into the lumen through the natural body orifice into the working guide channel. Once activated, the cutting electrode generates plasma that vaporizes or coagulates the tissue.

[0003] Chinese Patent No. CN111513838A, authorized and announced on August 11, 2020, discloses an electrosurgical endoscope and its sealing structure, including an outer sheath, an inner sheath, a handle assembly, an endoscope, an electrode assembly, and a flushing assembly. The outer sheath is fitted over the inner sheath, and the rear end of the inner sheath is connected to the handle assembly. The endoscope and the electrode assembly pass through the inner sheath, and the rear end of the electrode assembly is connected to the handle assembly. The flushing assembly is mounted on the outer sheath. It also includes a sealing element, which is installed at the connection between the inner sheath and the handle assembly. The sealing element has a lens hole for the endoscope to pass through and a rod hole for the electrode assembly to pass through. The sealing element also has a groove that connects the rod hole and the edge of the sealing element. The rinsing assembly is mounted on the outer sheath connector. The rinsing assembly includes an inlet end and an outlet end. The inlet end is connected to the inner wall of the outer sheath. The rinsing fluid enters the outer sheath from the inlet end, flows in along the gap between the outer and inner sheaths, and flows into the surgical area from the outlet hole at the front end of the outer sheath. The outlet end is connected to the inner wall of the inner sheath. The rinsing fluid in the surgical area is drawn into the inner sheath and flows out along the inner sheath and the outlet end, forming a circulation.

[0004] The above patents, in conjunction with their appendices Figure 5 It is known that because the fluid outlet is located on the side wall of the front end of the outer sheath and the front end of the inner sheath forms a cylindrical protrusion that fits with the outer sheath, the fluid outlet near the front end of the outer sheath is blocked by the protrusion, causing blood and fluid to accumulate at the tip of the endoscope, blurring the field of vision, and making it easy to enter the surgical blind zone, which is not conducive to reducing the risk of surgery. Utility Model Content

[0005] The present invention aims to overcome the shortcomings of existing technologies in reducing surgical risks by providing an electrosurgical endoscope with enhanced drainage function that helps reduce surgical risks.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An electrosurgical endoscope with enhanced drainage function includes an outer sheath and an inner sheath. The outer sheath is fitted over the inner sheath, forming a flushing channel between them. The inner sheath contains a channel. A flushing seat connected to the flushing channel is fixed on the rear side wall of the outer sheath. Several flushing holes, all connected to the flushing channel, are provided on the front side wall of the outer sheath. A fixing seat is fixed to the rear end of the inner sheath. The flushing seat is sealed and fitted onto the front end of the fixing seat. The inner and outer sides of the front end of the inner sheath protrude outwards simultaneously to form a boss that is in close contact with the front end of the outer sheath. The flushing channel is located between the boss and the fixing seat. The rear end of the boss is close to the fixing seat, and the front end of the boss is away from the fixing seat. A portion of the rear end of the boss does not protrude outwards, forming one or more spaced notches that are connected to the flushing holes.

[0008] The outer sheath is fitted over the inner sheath, forming a flushing channel between them. The inner sheath contains a channel. A flushing seat connected to the flushing channel is fixed on the rear side wall of the outer sheath. Several flushing holes connected to the flushing channel are provided on the front side wall of the outer sheath. A fixing seat is fixed at the rear end of the inner sheath. The flushing seat is sealed and fitted onto the front end of the fixing seat. The inner and outer sides of the front end of the inner sheath protrude outwards simultaneously to form a boss that is in close contact with the front end of the outer sheath. The flushing channel is located between the boss and the fixing seat. The rear end of the boss is close to the fixing seat, and the front end of the boss is away from the fixing seat. A portion of the rear end of the boss does not protrude outwards, forming one or more notches that are spaced apart and connected to the flushing holes. The connection method and specific structure of the irrigation seat and the fixation seat are existing technologies, so they will be briefly mentioned here and will not be described in detail. The protrusion has been changed from the original cylinder to one or more notches that are spaced apart, so that the irrigation hole near the front end of the outer sheath is not completely blocked, reducing the risk of blood and fluid accumulation at the front end of the endoscope, improving the clarity of the field of vision, and achieving the goal of reducing surgical risks.

[0009] Preferably, a ceramic tube head is fixed to the front end of the inner sheath. One end of the ceramic tube head has an L-shaped groove on its outer wall that matches the boss. One end of the ceramic tube head also has one or more locking slots that match the non-protruding portions of the rear end of the boss. The other end of the ceramic tube head is suspended outside the front ends of both the inner and outer sheaths. The L-shaped groove mates with the boss, facilitating axial positioning during assembly. Simultaneously, the locking slots match the non-protruding portions of the rear end of the boss, preventing deflection after assembly. This improves the firmness and stability of the ceramic tube head when fitted with the inner sheath.

[0010] Preferably, several flushing holes are arranged in a matrix and evenly distributed circumferentially on the front sidewall of the outer sheath. This allows for flushing from all 360 degrees, improving the flushing effect.

[0011] Preferably, the flushing seat includes a tube seat, the front end of which is fixedly connected to the rear end of the outer sheath and forms an integral part. The rear end of the tube seat is sleeved on the front end of the fixed seat and is detachably connected to the fixed seat. An inlet tube seat and a drain tube seat, both communicating with the interior, are detachably connected to the outer side wall of the tube seat. The inlet tube seat is located outside the front end of the fixed seat and communicates with the flushing water channel. The rear end of the inner sheath is fixedly connected to the front end of the fixed seat and forms an integral part. The front side wall of the fixed seat is provided with a plurality of through holes communicating with the drain tube seat and the channel. The plurality of through holes are evenly distributed along the circumference of the fixed seat. The inner side wall of the tube seat is provided with two sealing rings, which are located on the front and rear sides of the drain tube seat, respectively. The through holes are located between the two sealing rings. The tube seat is sealed to the fixed seat through the sealing rings. The flushing fluid enters the flushing channel through the inlet pipe seat and finally flushes away the blood through the flushing hole. The flushed blood is then extracted through the channel and the suction pipe seat. The sealing ring facilitates the process of blood entering the channel and then entering the suction pipe seat through the through hole during suction, preventing blood from seeping into the gaps in the flushing channel and other areas, thus improving the suction effect.

[0012] Preferably, the device also includes an endoscope and electrodes, with the channels respectively matching the endoscope and electrodes. A handle is detachably connected to the rear end of the mounting base. The handle has two insertion interfaces respectively matching the endoscope and electrodes, which communicate with the channels. The connection method between the mounting base and the handle, as well as the specific structures of the endoscope, electrodes (not shown in the figures), and the handle, are all existing technologies and will not be described in detail here. The endoscope and electrodes are inserted into the channels through their respective insertion interfaces for user operation and observation.

[0013] The beneficial effects of this utility model are:

[0014] 1. The protrusion has been changed from the original cylinder to one or more spaced notches, so that the irrigation hole near the front end of the outer sheath is not completely blocked, reducing the risk of blood and fluid accumulation at the tip of the endoscope, improving the clarity of the field of vision, and achieving the goal of reducing surgical risks.

[0015] 2. The ceramic tube head matches the boss through an L-shaped groove, which facilitates axial positioning during assembly. At the same time, the bayonet matches the non-protruding part of the rear end of the boss, which helps prevent the ceramic tube head from deflecting after assembly, thereby improving the firmness and stability of the ceramic tube head and the inner sheath. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 yes Figure 1 End diagram;

[0018] Figure 3 yes Figure 2 Sectional view of AA;

[0019] Figure 4 yes Figure 3 Enlarged view of the structure at point B;

[0020] Figure 5 yes Figure 3 Enlarged view of the structure at point C;

[0021] Figure 6 This is a schematic diagram of the structure of this utility model after the handle and endoscope are assembled;

[0022] Figure 7 yes Figure 6 Exploded view;

[0023] Figure 8 yes Figure 7 Enlarged view of the structure at point E in the middle;

[0024] Figure 9 yes Figure 7 Enlarged view of the structure at point D.

[0025] In the diagram: 1. Outer sheath, 2. Inner sheath, 3. Endoscope, 4. Flushing channel, 5. Channel, 6. Flushing seat, 7. Flushing hole, 8. Fixing seat, 9. Insertion interface, 10. Boss, 11. Notch, 12. Ceramic tube head, 13. L-shaped groove, 14. Bayonet, 15. Tube seat, 16. Inlet tube seat, 17. Drain tube seat, 18. Through hole, 19. Sealing ring, 20. Handle. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0028] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of components illustrated in these embodiments do not limit the scope of this application. For ease of illustration, spatial relative terms such as “upper,” “lower,” “left,” and “right” are used in the embodiments to describe the relationship of one element or feature shown in the figures relative to another element or feature. It should be understood that, in addition to the orientations shown in the figures, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figures is inverted, an element described as being “below” other elements or features would be fixed “upper” to other elements or features. Thus, the exemplary term “lower” can include both upper and lower orientations. The device may be fixed in other ways (rotated 90 degrees or located in other orientations), and the spatial relative descriptions used herein can be interpreted accordingly. It should also be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale. Techniques, processes, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, processes, and equipment should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be discussed further in subsequent figures.

[0029] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 In the described embodiment, an electrosurgical endoscope with enhanced drainage function includes an outer sheath 1 and an inner sheath 2. The outer sheath 1 is fitted over the inner sheath 2, forming a flushing channel 4 between them. The inner sheath 2 has a channel 5 inside. A flushing seat 6, communicating with the flushing channel 4, is fixed on the rear side wall of the outer sheath 1. A plurality of flushing holes 7, each communicating with the flushing channel 4, are provided on the front side wall of the outer sheath 1. A fixing seat 8 is fixed to the rear end of the inner sheath 2. The flushing seat 6 is sealed and fitted onto the front end of the fixing seat 8. Figure 8As shown, the inner and outer walls of the front end of the inner sheath 2 protrude outwards simultaneously to form a boss 10 that is in close contact with the front end port of the outer sheath 1. The flushing channel 4 is located between the boss 10 and the fixed seat 8. The rear end of the boss 10 is close to the fixed seat 8, and the front end of the boss 10 is far away from the fixed seat 8. A portion of the rear end of the boss 10 does not protrude outwards and forms one or more notches 11 that are spaced apart and communicate with the flushing hole 7.

[0031] like Figure 4 and Figure 8 As shown, a ceramic tube head 12 is fixed to the front end of the inner sheath 2. An L-shaped groove 13 matching the boss 10 is provided on the outer wall of one end of the ceramic tube head 12. One end of the ceramic tube head 12 is provided with one or more bayonets 14 that match the non-protruding part of the rear end of the boss 10. The other end of the ceramic tube head 12 is suspended and located outside the front end of the inner sheath 2 and the outer sheath 1 respectively.

[0032] like Figure 1 and Figure 6 As shown, several flushing holes 7 are arranged in a matrix and are evenly distributed along the circumference on the front sidewall of the outer sheath 1.

[0033] like Figure 1 , Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the flushing seat 6 includes a tube seat 15. The front end of the tube seat 15 is fixedly connected to the rear end of the outer sheath 1 and forms an integral part. The rear end of the tube seat 15 is sleeved on the front end of the fixed seat 8 and is detachably connected to the fixed seat 8. The outer side wall of the tube seat 15 is detachably connected to an inlet tube seat 16 and a drain tube seat 17, which are both connected to the interior of the tube seat 15. The inlet tube seat 16 is located outside the front end of the fixed seat 8 and is connected to the flushing water channel 4. The rear end of the inner sheath 2 is fixedly connected to the front end of the fixed seat 8 and forms an integral part. The front side wall of the fixed seat 8 is provided with several through holes 18 that connect the drain tube seat 17 and the channel 5. The several through holes 18 are evenly distributed along the circumference of the fixed seat 8. The inner side wall of the tube seat 15 is provided with two sealing rings 19. The two sealing rings 19 are located on the front and rear sides of the drain tube seat 17, respectively. The through holes 18 are located between the two sealing rings 19. The tube seat 15 is sealed to the fixed seat 8 through the sealing rings 19.

[0034] like Figure 6 , Figure 7 and Figure 9 As shown, it also includes an endoscope 3 and an electrode. The channel 5 is matched with the endoscope 3 and the electrode respectively. The rear end of the mounting base 8 is detachably connected to a handle 20. The handle 20 has two insertion interfaces 9 that are matched with the endoscope 3 and the electrode respectively. The insertion interfaces 9 are connected to the channel 5.

[0035] The connection method and specific structure of the irrigation seat 6 and the fixing seat 8 are existing technologies, so they are briefly mentioned here and will not be described in detail. The connection method of the fixing seat 8 and the handle 20, as well as the specific structures of the endoscope 3, the electrode (not shown in the figure), and the handle 20, are also existing technologies, so they will not be described in detail here. The endoscope 3 and the electrode are inserted into the channel 5 through the corresponding insertion interface 9 for easy operation and observation by the user. The inlet tube seat 16 is connected to the inlet tube, and the aspiration tube seat 17 is connected to the aspiration tube. During operation, while holding the handle 20, the user performs surgical operations by moving the electrode through the handle 20 under the observation of the endoscope 3. The irrigation fluid enters the irrigation channel 4 through the inlet tube seat 16, and finally flushes the blood through the irrigation hole 7. The flushed blood is then extracted through the channel 5 and the aspiration tube seat 17. In the above process, since the protrusion 10 is changed from the original cylinder to have one or more notches 11 distributed at intervals, the irrigation hole 7 near the front end of the outer sheath 1 is not completely blocked, which reduces the risk of blood and fluid accumulating at the front end of the endoscope 3, which is conducive to improving the clarity of the field of vision and achieving the purpose of reducing surgical risks.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electrosurgical endoscope with enhanced drainage function, comprising an outer sheath (1) and an inner sheath (2), wherein the outer sheath (1) is fitted over the inner sheath (2) and a flushing channel (4) is formed between the two, the inner sheath (2) is provided with a channel (5), a flushing seat (6) communicating with the flushing channel (4) is fixed on the rear side wall of the outer sheath (1), and a plurality of flushing holes (7) communicating with the flushing channel (4) are provided on the front side wall of the outer sheath (1), a fixing seat (8) is fixed at the rear end of the inner sheath (2), and the flushing seat (6) is sealed and fitted over the front end of the fixing seat (8), characterized in that, The inner and outer walls of the front end of the inner sheath (2) protrude outward synchronously to form a boss (10) that is in close contact with the front end port of the outer sheath (1). The flushing channel (4) is located between the boss (10) and the fixed seat (8). The rear end of the boss (10) is close to the fixed seat (8), and the front end of the boss (10) is far away from the fixed seat (8). The rear end of the boss (10) has a portion that does not protrude outward and forms one or more notches (11) that are spaced apart and connected to the flushing hole (7).

2. The electrosurgical endoscope with enhanced drainage function according to claim 1, characterized in that, The inner sheath (2) is fixed with a ceramic tube head (12). One end of the ceramic tube head (12) has an L-shaped groove (13) that matches the boss (10) on its outer side wall. One end of the ceramic tube head (12) has one or more bayonets (14) that match the non-protruding part of the rear end of the boss (10). The other end of the ceramic tube head (12) is suspended and located outside the front end of the inner sheath (2) and the outer sheath (1).

3. The electrosurgical endoscope with enhanced drainage function according to claim 1, characterized in that, Several flushing holes (7) are arranged in a matrix and evenly distributed along the circumference on the front sidewall of the outer sheath (1).

4. An electrosurgical endoscope with enhanced drainage function according to claim 1, 2, or 3, characterized in that, The flushing seat (6) includes a tube seat (15), the front end of which is fixedly connected to the rear end of the outer sheath (1) and forms an integral part. The rear end of the tube seat (15) is sleeved on the front end of the fixed seat (8) and is detachably connected to the fixed seat (8). The outer side wall of the tube seat (15) is detachably connected to an inlet tube seat (16) and a suction tube seat (17), both of which are connected to the interior of the tube seat (15). The inlet tube seat (16) is located outside the front end of the fixed seat (8) and is connected to the flushing water channel (4). The rear end of the inner sheath (2) is connected to the fixed seat (8). The front end of the fixed seat (8) is fixedly connected and formed as a whole. The front side wall of the fixed seat (8) is provided with several through holes (18) that connect the liquid extraction tube seat (17) and the channel (5). The several through holes (18) are evenly distributed along the circumference of the fixed seat (8). The inner side wall of the tube seat (15) is provided with two sealing rings (19). The two sealing rings (19) are located on the front and rear sides of the liquid extraction tube seat (17) respectively. The through holes (18) are located between the two sealing rings (19). The tube seat (15) is sealed to the fixed seat (8) through the sealing rings (19).

5. An electrosurgical endoscope with enhanced drainage function according to claim 1, 2, or 3, characterized in that, It also includes an endoscope (3) and an electrode. The channel (5) is matched with the endoscope (3) and the electrode respectively. The rear end of the mounting base (8) is detachably connected to a handle (20). The handle (20) is provided with two insertion interfaces (9) that are matched with the endoscope (3) and the electrode respectively. The insertion interfaces (9) are connected to the channel (5).

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