阅读说明：本技术 电动旋转等离子电切镜 (Electric rotary plasma resectoscope ) 是由 李汉忠 熊开太 于 2021-09-09 设计创作，主要内容包括：电动旋转等离子电切镜包括外鞘(1)、内鞘(2)、电动旋转工作组件(3)、外壳、线缆(6)、内窥镜(7)；外鞘(1)可拆卸地连接在内鞘(2)上,内鞘(2)可拆卸地连接在电动旋转工作组件(3)的前端；内窥镜(7)可拆卸地连接在外壳上。本发明的电动旋转等离子电切镜由电机带动伞齿轮驱动电切环做立体旋转切割,效率高、操作规范,减少了疲劳对手术效果造成的不良影响；除内鞘、外鞘和硬管光学镜外,电切环和医生直接接触的部件是一次性使用,用后不需消毒灭菌,降低了患者交叉感染的概率；产品外形为手枪形,便于医生握持。(The electric rotary plasma resectoscope comprises an outer sheath (1), an inner sheath (2), an electric rotary working component (3), a shell, a cable (6) and an endoscope (7); the outer sheath (1) is detachably connected to the inner sheath (2), and the inner sheath (2) is detachably connected to the front end of the electric rotary working component (3); an endoscope (7) is detachably connected to the housing. The electric rotary plasma resectoscope drives the bevel gear to drive the resectoscope ring to perform three-dimensional rotary cutting by the motor, has high efficiency and standard operation, and reduces the adverse effect of fatigue on the operation effect; except the inner sheath, the outer sheath and the hard tube optical lens, the parts of the electric cutting ring which are directly contacted with a doctor are disposable, and the electric cutting ring does not need to be sterilized after being used, so that the probability of cross infection of a patient is reduced; the product is in a pistol shape, and is convenient for a doctor to hold.)

1. The electric rotary plasma resectoscope is characterized by comprising an outer sheath (1), an inner sheath (2), an electric rotary working component (3), a shell, a cable (6) and an endoscope (7); the outer sheath (1) is detachably connected to the inner sheath (2), and the inner sheath (2) is detachably connected to the front end of the electric rotary working component (3); an endoscope (7) is detachably connected to the housing.

2. The electric rotary plasma resectoscope according to claim 1, wherein the housing comprises a left housing (4) and a right housing (5), the left housing (4) and the right housing (5) have a semi-open structure, and are matched in shape and size and are respectively wrapped and installed on the electric rotary working assembly (3);

preferably, the left shell (4) and the right shell (5) are made of ABS or other engineering plastics and are harmless to human bodies;

preferably, the left shell (4) and the right shell (5) are integrated after being installed to form a pistol-shaped structure, the handle part is cylindrical or similar cylindrical, and the size is suitable for being held by a doctor with one hand;

preferably, the left shell (4) and the right shell (5) are installed and then combined into a whole to form a handle for gripping, and the circumference of the cross section of the handle is 10cm-30cm, preferably 12cm-25cm, and further preferably 15cm-22 cm;

preferably, a trigger button and other function buttons are further arranged on the shell, and the functions of the buttons can be flexibly set.

3. The electric rotary plasma resectoscope according to claim 1 or 2, characterized in that the electric rotary plasma resectoscope is disposable except for the outer sheath (1), the inner sheath (2) and the endoscope (7);

preferably, the electric rotary working assembly (3) comprises an electric cutting ring assembly (31), a front sealing ring (32), a frame (33), a conductive slip ring (34) for realizing electric connection when the electric cutting ring rotates, a conductive slip ring seat (35), a bevel gear (36), a motor 37, a slide rod (38), a rear sealing ring (39), an endoscope guide tube (310) and an adjusting screw rod (311);

preferably, two bevel gears (36) are arranged and are respectively arranged at the tail ends of the motor (37) and the electric cutter ring assembly (31) and are mutually meshed after being arranged;

preferably, two slide bars (38) are provided.

4. The electric rotary plasma resectoscope according to claim 3, wherein the conductive slip ring seat (35) is provided with three holes in parallel at the upper part, the two sides are respectively a first through hole (351) and a second through hole (352), and the middle is a screw hole (353);

preferably, a large through hole (354) is formed in the middle of the conductive sliding ring seat (35), and a mounting surface (355) is formed at the bottom of the conductive sliding ring seat; the motor (37) is fixedly connected with a mounting surface (355) at the bottom of the conductive sliding ring seat (35); the conductive slip ring (34) is inserted into the large through hole (354) of the conductive slip ring seat (35) and fixed.

5. The motorized rotary plasma resectoscope according to claim 3 or 4, wherein the frame (33) is U-shaped, the frame (33) comprising a front flange (331) and a rear flange (332), the front flange (331) having a front flange first mounting hole (3311), a front flange second mounting hole (3312), a front flange third mounting hole (3313), a front flange fourth mounting hole (3314) and a boss (3315), the rear flange (332) having a rear flange first mounting hole (3321), a rear flange second mounting hole (3322), a rear flange third mounting hole (3323) and a rear flange fourth mounting hole (3324);

preferably, one of the sliding rods (38) passes through the first through hole (351) of the conductive sliding ring seat (35), and two ends of the sliding rod are respectively fixed on the first mounting hole (3311) of the front protruding edge and the first mounting hole (3321) of the rear flange of the frame (33); the other sliding rod (38) penetrates through a second through hole (352) of the conductive sliding ring seat (35), two ends of the other sliding rod (38) are respectively fixed on a front flange third mounting hole (3313) and a rear flange third mounting hole (3323) of the rack (33), and the conductive sliding ring seat (35) is connected with the rack (33) through the two sliding rods (38) and the adjusting screw rod (311);

preferably, the conductive slip ring seat (35) can freely slide on the sliding rod (38);

preferably, the adjusting screw (311) passes through the screw hole (353) of the conductive sliding ring seat (35), and two ends of the adjusting screw are respectively fixed in the front flange second mounting hole (3312) and the rear flange second mounting hole (3322) of the frame (33).

6. The electrically rotatable plasma resectoscope according to any one of claims 3-5, wherein the electrical cutting ring assembly (31) comprises an electrical cutting ring (312) and an electrical cutting ring fixing tube (313), the electrical cutting ring (312) is a flexible conductive cable, and the electrical cutting ring (312) is inserted into the electrical cutting ring fixing tube (313) to form a rigid body; the electrical cut-off ring assembly (31) passes through a fourth mounting hole (3314) of a front flange of the frame (33) and is fixed with the conductive slip ring (34).

7. An electric rotary plasma resectoscope according to any of claims 3-6, wherein the side wall of the resectoscope fixing tube (313) is provided with a fixing tube first mounting hole (3131) and a fixing tube second mounting hole (3132), and the fixing tube first mounting hole (3131) and the fixing tube second mounting hole (3132) are blind holes; a fixed tube through hole (3133) is arranged in the middle, and an endoscope (7) passes through the middle; a fixed tube small hole (3134) penetrating through the bottom of the electric cutting ring fixed tube (313), after the electric cutting ring (312) is inserted into the first fixed tube mounting hole (3131) and the second fixed tube mounting hole (3132), a lead is welded through the fixed tube small hole (3134) and then is electrically connected with the rotor end of the conductive sliding ring (34), and the stator end of the conductive sliding ring (34) is electrically connected with the plasma energy platform through the lead, so that the transmission of plasma energy is realized;

preferably, the electric cutting ring (312) and the electric cutting ring fixing tube (313) are fixedly connected together to form an electric cutting kit; the electric rotary plasma resectoscope is provided with a plurality of electric cutting external members, and the specifications of the electric cutting external members are different;

preferably, two bevel gears (36) are respectively arranged on an output shaft of the motor (37) and the tail end of the electric cutter ring assembly (31), the axes of the bevel gears are crossed, and the motor (37) rotates to drive the electric cutter ring assembly (31) to rotate together.

8. The electric rotary plasma resectoscope according to any one of claims 3-7, wherein the endoscope guide tube (310) is mounted in the rear flange fourth mounting hole (3324) of the frame (33); the endoscope (7) is inserted into the endoscope guide tube (310) through a guide hole on the shell; the front end of the endoscope (7) reaches the front end of the inner sheath (2) through a fixing tube through hole (3133) in the middle of the electric cutting ring fixing tube (313); the inserting end of the endoscope (7) is in clearance fit with a fixed tube through hole (3133) in the middle of the electric cutting ring fixing tube (313), and the electric cutting ring fixing tube (313) cannot touch the endoscope (7) when rotating;

preferably, the endoscope (7) is locked to the housing.

9. The electric rotary plasma resectoscope according to any one of claims 3-8, wherein the electric cutting ring (312) is inserted into the electric cutting ring fixing tube (313) and then is sealed by glue filling, i.e. after the electric cutting ring (312) is inserted into the electric cutting ring fixing tube (313), the gap between the electric cutting ring and the electric cutting ring is filled with glue.

10. The electric rotary plasma resectoscope according to any one of claims 3-9, wherein the front sealing ring (32) is installed in an annular groove at the lower part of the front flange (331) of the frame (33) to prevent the physiological saline from entering the interior of the electric rotary working assembly (3) along the periphery of the electric cutting ring fixing tube (313);

preferably, the rear sealing ring (39) is arranged at one end of the electric cutting ring fixing tube (313) close to the bevel gear (36) and forms a tight fit with the insertion end of the endoscope (7) to prevent the physiological saline from entering the electric rotating working component (3) along the through hole in the electric cutting ring fixing tube (313).

Technical Field

The invention belongs to the technical field of medical instruments. In particular to an electric rotary plasma resectoscope.

Background

The plasma resectoscope is a transurethral operation resection device widely used in the urinary surgery at present, and is mainly applied to transurethral prostate electrostomy (TURP) and transurethral bladder tumor electrostomy (TURBT).

When the clinician carries out the two types of operation, the main application mode is to control the electric cutting handle by fingers, and the electric cutting ring for cutting the tissue is moved linearly back and forth to cut and stop the bleeding of the tissue. The cutting efficiency is low, the time of one operation is from half an hour to two to three hours, so that the finger joints are subjected to operation movements from dozens of times to hundreds of times. And due to the factors of poor stability, fatigue of finger joints, long-time lifting of two arms and the like, the standardization, safety, excision range, hemostasis effect and the like of surgical cutting are uncertain.

The use of transurethral plasmablast surgical devices has been in history for decades, with no major changes in the basic apparatus. The invention makes creative changes in the aspects of the operation mode, the tissue cutting mode, the cutting frequency, the hemostasis reliability and the like of the plasma resectoscope operation.

Because the traditional plasma resectoscope belongs to the medical apparatus used repeatedly, the disinfection and sterilization are needed after each use, and the uncertainty of cross infection among patients is increased. The invention is characterized in that the part of the structure directly contacted by the operator is a disposable application mode, thereby reducing the probability of cross infection of patients in the operation.

The invention is a rotary cutting mode driven by a motor, greatly improves the cutting efficiency, lightens the fatigue strength of the arms and fingers of an operator, and can definitely improve the reliability and the safety of the operation.

It is in this context that the present invention is presented.

The transmission part of the electric rotary plasma resectoscope comprises a motor and a pair of bevel gears, the motor provides power for the plasma resectoscope, the bevel gears are driven by the motor to rotate, and the bevel gears drive the resectoscope ring to rotate, so that the rotary resection function of prostate or tumor tissues is realized.

The electric rotary resectoscope can be quickly disassembled to be reused, the rest undetachable parts are disposable, the electric rotary resectoscope is discarded after an operation, disinfection and sterilization are not needed, and the probability of cross infection among patients is reduced.

Disclosure of Invention

The embodiment of the invention provides an electric rotary plasma resectoscope which comprises an outer sheath (1), an inner sheath (2), an electric rotary working component (3), a shell, a cable (6) and an endoscope (7); the outer sheath (1) is detachably connected to the inner sheath (2), and the inner sheath (2) is detachably connected to the front end of the electric rotary working component (3); an endoscope (7) is detachably connected to the housing.

According to one embodiment of the invention, for example, the shell comprises a left shell (4) and a right shell (5), the left shell (4) and the right shell (5) have a semi-open structure, are matched in shape and size and are respectively wrapped and installed on the electric rotary working assembly (3);

preferably, the left shell (4) and the right shell (5) are made of ABS or other engineering plastics and are harmless to human bodies;

preferably, the left shell (4) and the right shell (5) are integrated after being installed to form a pistol-shaped structure, the handle part is cylindrical or similar cylindrical, and the size is suitable for being held by a doctor with one hand;

preferably, the left shell (4) and the right shell (5) are installed and then combined into a whole to form a handle for gripping, and the circumference of the cross section of the handle is 10cm-30cm, preferably 12cm-25cm, and further preferably 15cm-22 cm;

preferably, a trigger button and other function buttons are further arranged on the shell, and the functions of the buttons can be flexibly set.

According to one embodiment of the invention, for example, the electric rotary plasma resectoscope is disposable except for the outer sheath (1), the inner sheath (2) and the endoscope (7);

preferably, the electric rotary working assembly (3) comprises an electric cutting ring assembly (31), a front sealing ring (32), a frame (33), a conductive slip ring (34) for realizing electric connection when the electric cutting ring rotates, a conductive slip ring seat (35), a bevel gear (36), a motor 37, a slide rod (38), a rear sealing ring (39), an endoscope guide tube (310) and an adjusting screw rod (311);

preferably, two bevel gears (36) are arranged and are respectively arranged at the tail ends of the motor (37) and the electric cutter ring assembly (31) and are mutually meshed after being arranged;

preferably, two slide bars (38) are provided.

According to one embodiment of the invention, for example, three holes are arranged in parallel on the upper part of the conductive sliding ring seat (35), wherein the two sides are a first through hole (351) and a second through hole (352) respectively, and the middle part is a screw hole (353);

preferably, a large through hole (354) is formed in the middle of the conductive sliding ring seat (35), and a mounting surface (355) is formed at the bottom of the conductive sliding ring seat; the motor (37) is fixedly connected with a mounting surface (355) at the bottom of the conductive sliding ring seat (35); the conductive slip ring (34) is inserted into the large through hole (354) of the conductive slip ring seat (35) and fixed.

According to one embodiment of the present invention, for example, the frame (33) has a U-shape, the frame (33) includes a front flange (331) and a rear flange (332), the front flange (331) is provided with a front flange first mounting hole (3311), a front flange second mounting hole (3312), a front flange third mounting hole (3313), a front flange fourth mounting hole (3314), and a boss (3315), and the rear flange (332) is provided with a rear flange first mounting hole (3321), a rear flange second mounting hole (3322), a rear flange third mounting hole (3323), and a rear flange fourth mounting hole (3324);

preferably, one of the sliding rods (38) passes through the first through hole (351) of the conductive sliding ring seat (35), and two ends of the sliding rod are respectively fixed on the first mounting hole (3311) of the front protruding edge and the first mounting hole (3321) of the rear flange of the frame (33); the other sliding rod (38) penetrates through a second through hole (352) of the conductive sliding ring seat (35), two ends of the other sliding rod (38) are respectively fixed on a front flange third mounting hole (3313) and a rear flange third mounting hole (3323) of the rack (33), and the conductive sliding ring seat (35) is connected with the rack (33) through the two sliding rods (38) and the adjusting screw rod (311);

preferably, the conductive slip ring seat (35) can freely slide on the sliding rod (38);

preferably, the adjusting screw (311) passes through the screw hole (353) of the conductive sliding ring seat (35), and two ends of the adjusting screw are respectively fixed in the front flange second mounting hole (3312) and the rear flange second mounting hole (3322) of the frame (33).

According to one embodiment of the invention, for example, the electrical cutting ring assembly (31) comprises an electrical cutting ring (312) and an electrical cutting ring fixing tube (313), wherein the electrical cutting ring (312) is a flexible conductive cable, and the electrical cutting ring (312) is inserted into the electrical cutting ring fixing tube (313) and combined into a rigid body; the electrical cut-off ring assembly (31) passes through a fourth mounting hole (3314) of a front flange of the frame (33) and is fixed with the conductive slip ring (34).

According to one embodiment of the present invention, for example, a stationary pipe first mounting hole (3131) and a stationary pipe second mounting hole (3132) are provided on a sidewall of the electrical cutting ring stationary pipe (313), and both the stationary pipe first mounting hole (3131) and the stationary pipe second mounting hole (3132) are blind holes; a fixed tube through hole (3133) is arranged in the middle, and an endoscope (7) passes through the middle; a fixed tube small hole (3134) penetrating through the bottom of the electric cutting ring fixed tube (313), after the electric cutting ring (312) is inserted into the first fixed tube mounting hole (3131) and the second fixed tube mounting hole (3132), a lead is welded through the fixed tube small hole (3134) and then is electrically connected with the rotor end of the conductive sliding ring (34), and the stator end of the conductive sliding ring (34) is electrically connected with the plasma energy platform through the lead, so that the transmission of plasma energy is realized;

preferably, the electric cutting ring (312) and the electric cutting ring fixing tube (313) are fixedly connected together to form an electric cutting kit; the electric rotary plasma resectoscope is provided with a plurality of electric cutting external members, and the specifications of the electric cutting external members are different;

preferably, two bevel gears (36) are respectively arranged on an output shaft of the motor (37) and the tail end of the electric cutter ring assembly (31), the axes of the bevel gears are crossed, and the motor (37) rotates to drive the electric cutter ring assembly (31) to rotate together.

According to one embodiment of the present invention, for example, the endoscope guide tube (310) is mounted inside the rear flange fourth mounting hole (3324) of the frame (33); the endoscope (7) is inserted into the endoscope guide tube (310) through a guide hole on the shell; the front end of the endoscope (7) reaches the front end of the inner sheath (2) through a fixing tube through hole (3133) in the middle of the electric cutting ring fixing tube (313); the inserting end of the endoscope (7) is in clearance fit with a fixed tube through hole (3133) in the middle of the electric cutting ring fixing tube (313), and the electric cutting ring fixing tube (313) cannot touch the endoscope (7) when rotating;

preferably, the endoscope (7) is locked to the housing.

According to one embodiment of the invention, for example, the electrical cutting ring (312) is inserted into the electrical cutting ring fixing tube (313) and then is sealed by glue filling, that is, after the electrical cutting ring (312) is inserted into the electrical cutting ring fixing tube (313), the gap between the electrical cutting ring and the electrical cutting ring is filled with glue.

According to one embodiment of the invention, for example, the front seal ring (32) is mounted in an annular groove at the lower part of the front flange (331) of the frame (33) to prevent the physiological saline from entering the electric rotary working assembly (3) along the periphery of the electric cutting ring fixing tube (313);

preferably, the rear sealing ring (39) is arranged at one end of the electric cutting ring fixing tube (313) close to the bevel gear (36) and forms a tight fit with the insertion end of the endoscope (7) to prevent the physiological saline from entering the electric rotating working component (3) along the through hole in the electric cutting ring fixing tube (313).

The invention has the following beneficial technical effects:

(1) the electric rotary plasma resectoscope drives the bevel gear to drive the resectoscope ring to do 360-degree three-dimensional rotary cutting motion. Compared with the traditional manual linear reciprocating cutting mode, the cutting efficiency is higher, the doctor can operate the cutting tool more normally, the working efficiency is improved, and the adverse effect of fatigue on the operation effect is reduced.

(2) Except the inner sheath, the outer sheath and the hard tube optical lens, the electric rotary plasma resectoscope has the advantages that the parts of the resectoscope, which are directly contacted with a doctor, are disposable, and the resectoscope does not need to be sterilized after being used, so that the probability of cross infection of patients is reduced.

(3) The product appearance is pistol-shaped structure, is convenient for the doctor to hold, accords with human engineering.

(4) After the appearance of the product is changed, the product can be installed at the tail end of a mechanical arm of a surgical robot for use, and the universality is very strong.

Drawings

FIG. 1 is an overall view of an electric rotary plasma resectoscope provided by an embodiment of the present invention.

Fig. 2 is an exploded view of an electrically rotating plasma resectoscope provided by an embodiment of the present invention.

Fig. 3 is an overall view of the electric rotary working unit 3 in the electric rotary plasma resectoscope according to the embodiment of the present invention.

Fig. 4 is an exploded view of the electrically rotatable working element 3 in the electrically rotatable plasma resectoscope provided by an embodiment of the present invention.

Fig. 5 is a structural diagram of a conductive slip ring seat 35 in an electric rotary plasma resectoscope provided by an embodiment of the present invention.

Fig. 6 is a structural view of a chassis 33 in the electric rotary plasma resectoscope according to the embodiment of the present invention.

Fig. 7 is a structural diagram of an electrical cut ring assembly 31 in an electric rotary plasma resectoscope according to an embodiment of the present invention.

Fig. 8 is a partially enlarged structural view of an electrical cut ring assembly 31 in the electric rotary plasma resectoscope according to the embodiment of the present invention.

FIG. 9 is a cross-sectional view of an electric rotary plasma resectoscope provided by an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings. Those skilled in the art will appreciate that the present invention is not limited to the drawings and the following examples.

In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "left", "right", etc., with respect to the orientation or positional relationship shown in the drawings, is merely for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and should not be construed as limiting the specific scope of the present invention. Furthermore, the terms "first", "second", "third" and "fourth" are used for descriptive purposes only to distinguish technical features, have no essential meaning, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features.

In the present invention, unless otherwise expressly stated or limited, "connected" and the like are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, a movable connection, or an integral part; either directly or indirectly through intervening media, either internally or in any other relationship. "connected" does not include integral entities, but rather means the same as "connected". The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, two components are "electrically connected" to mean that current can be conducted from one component to the other. Although in the present embodiment, the two components are electrically connected through contact, those skilled in the art will know that the two components can be electrically connected without contact by using technologies such as wireless transmission, and any solutions similar to or the same as the present embodiment are all covered in the protection scope of the present invention.

FIG. 1 is a schematic diagram of an embodiment of an electrically driven rotary plasma resectoscope. As can be seen from fig. 1, the electric rotary plasma resectoscope provided by the embodiment of the invention has a simple and elegant overall appearance, and non-detachable parts are arranged inside the shell and connected with the outside through cables.

To further show the main structure of the electric rotary plasma resectoscope, fig. 2 is an exploded view of the electric rotary plasma resectoscope. As shown in fig. 2, the electric rotary plasma resectoscope provided by the embodiment of the present invention comprises an outer sheath 1, an inner sheath 2, an electric rotary working assembly 3, a housing (comprising a left housing 4 and a right housing 5), a cable 6, and an endoscope 7. The outer sheath 1 is detachably attached to the inner sheath 2. The inner sheath 2 is detachably attached to the front end of the electric rotary working assembly 3. The endoscope 7 is detachably attached to the housings (the left housing 4 and the right housing 5). The left shell 4 and the right shell 5 have a semi-open structure, are matched in shape and size, and are respectively wrapped and installed on the electric rotary working assembly 3. The left and right housings 4 and 5 can be made of ABS or other engineering plastics, for example, and are harmless to human body. The left shell 4 and the right shell 5 are integrated after being installed to form a pistol-shaped structure, the handle part is cylindrical or similar cylindrical, and the size is suitable for being held by a doctor with one hand. For example, the circumference of the cross section of the handle is 10cm to 30cm, preferably 12cm to 25cm, and more preferably 15cm to 22 cm. The shell is also provided with a trigger button and other function buttons, and the functions of the buttons can be flexibly set. The invention can also change the shape of the shell, and is arranged at the tail end of a mechanical arm of a surgical robot, a trigger button and other functional buttons can be removed and are directly connected by a signal wire, and a doctor operation end sends a control signal to realize the full-automatic control of the electric rotary resectoscope.

Except the outer sheath 1, the inner sheath 2 and the endoscope 7, the electric rotary plasma resectoscope provided by the embodiment of the invention is disposable, and is discarded after being used without disinfection and sterilization.

FIG. 3 is an overall view of the motorized rotary working assembly 3 in the motorized rotary plasma resectoscope provided in the practice of the present invention. Fig. 4 is an exploded view of the electric rotary working assembly 3 according to the embodiment of the present invention. As shown in fig. 4, the electric rotary working assembly 3 includes an electric cutting ring assembly 31, a front seal ring 32, a frame 33, a conductive slip ring 34 (for realizing electric connection when the electric cutting ring rotates), a conductive slip ring seat 35, a bevel gear 36 (two may be provided, which are respectively installed at the ends of a motor 37 and the electric cutting ring assembly 31 and are engaged with each other after being installed), a motor 37, a slide rod 38 (two may be provided), a rear seal ring 39, an endoscope guiding tube 310, and an adjusting screw 311. Fig. 5 is a structural diagram of a conductive slip ring seat 35 in the electric rotary resectoscope provided by the embodiment of the present invention. As shown in fig. 5, three holes are arranged side by side on the upper portion of the conductive slip ring seat 35, a first through hole 351 and a second through hole 352 are respectively arranged on two sides, and a screw hole 353 is arranged in the middle. The conductive slip ring seat 35 has a large through hole 354 in the middle and a mounting surface 355 at the bottom. The motor 37 is fixedly coupled (e.g., by screws) to the mounting surface 355 at the bottom of the conductive slip ring seat 35. The conductive slip ring 34 is inserted into the large through hole 354 of the conductive slip ring seat 35 and fixed (e.g., by screws).

Fig. 6 is a structural view of a chassis 33 in the electric rotary plasma resectoscope according to the embodiment of the present invention. As shown in fig. 6, the frame 33 is U-shaped, the frame 33 includes a front flange 331 and a rear flange 332, the front flange 331 is provided with a front flange first mounting hole 3311, a front flange second mounting hole 3312, a front flange third mounting hole 3313, a front flange fourth mounting hole 3314 and a boss 3315, and the rear flange 332 is provided with a rear flange first mounting hole 3321, a rear flange second mounting hole 3322, a rear flange third mounting hole 3323 and a rear flange fourth mounting hole 3324, the boss 3315 is used for quick connection of the inner sheath 2. One of the sliding rods 38 passes through the first through hole 351 (see fig. 5) of the conductive sliding ring seat 35, and both ends of the sliding rod are respectively fixed on the first mounting hole 3311 of the front flange and the first mounting hole 3321 of the rear flange of the frame 33. The other of the sliding rods 38 passes through the second through hole 352 of the conductive sliding ring seat 35, and both ends of the other of the sliding rods are fixed to the front flange third mounting hole 3313 and the rear flange third mounting hole 3323 of the frame 33, respectively. The conductive slip ring seat 35 is connected with the frame 33 through two sliding rods 38 and an adjusting screw 311. The conductive slip ring mount 35 is free to slide on the sliding rod 38. The adjusting screw 311 passes through the screw hole 353 of the conductive slip ring seat 35, and both ends of the adjusting screw are respectively fixed in the front flange second mounting hole 3312 and the rear flange second mounting hole 3322 of the frame 33. The front and back positions of the conductive slip ring seat 35 can be adjusted by manually rotating a knob at the end of the adjusting screw 311.

Fig. 7 is a structural diagram of an electrical cut ring assembly 31 in an electric rotary plasma resectoscope according to an embodiment of the present invention. As shown in fig. 7, the electrical cut ring assembly 31 includes an electrical cut ring 312 and an electrical cut ring fixing tube 313. The resecting ring 312 is substantially a flexible conductive cable, and it is necessary to ensure that the resecting ring does not deform and maintains a certain rigidity when rotating to cut tissue. The electric cutting ring 312 is inserted into the electric cutting ring fixing tube 313 to form a rigid body. Electrical cut-off ring assembly 31 passes through a front flange fourth mounting hole 3314 of frame 33 and is secured to conductive slip ring 34.

Fig. 8 is a partially enlarged structural view of an electrical cut ring assembly 31 in the electric rotary plasma resectoscope according to the embodiment of the present invention. As shown in fig. 8, a fixing tube first mounting hole 3131 and a fixing tube second mounting hole 3132, both of which are blind holes, are provided on a side wall of the electrical cutting ring fixing tube 313. A fixing tube through hole 3133 is provided in the middle, and an endoscope 7 is passed through the middle. The bottom of the resectioning ring fixing tube 313 has a fixing tube aperture 3134 therethrough. After the electrical cutting ring 312 is inserted into the first mounting hole 3131 and the second mounting hole 3132 of the fixed tube, a lead (not shown) is welded through the small hole 3134 of the fixed tube and then electrically connected to the rotor end (not shown) of the electrical slip ring 34, and the stator end (not shown) of the electrical slip ring 34 is electrically connected to the plasma energy platform through the lead, so that the plasma energy is transferred. In this embodiment, the electric cutting ring 312 and the electric cutting ring fixing tube 313 are fixedly connected together, and cannot be reused or detached. In clinical use, the electric cutting rings 312 with different specifications can be connected with the electric cutting ring fixing pipe 313 in advance according to requirements to form the electric cutting ring assemblies 31 with different specifications, and the electric cutting ring assemblies are arranged on the rotary working assembly 3 for selection of clinicians. As described above, when the adjustment screw 311 is manually rotated, the conductive slip ring holder 35 moves back and forth with the conductive slip ring 34, and then moves back and forth with the electrical cut-off ring assembly 31.

Two bevel gears 36 are respectively arranged on the output shaft of the motor 37 and the tail end of the electrical cut-off ring assembly 31, the axes of the bevel gears are crossed, and the motor 37 rotates to drive the electrical cut-off ring assembly 31 to rotate together, so that the electrical rotation cutting-off function is realized.

FIG. 9 is a cross-sectional view of an electric rotary plasma resectoscope provided by an embodiment of the present invention. As shown in fig. 9, the endoscope guide tube 310 is mounted inside the rear flange fourth mounting hole 3324 of the chassis 33 (see fig. 6). The endoscope 7 is inserted into the endoscope guide tube 310 through a guide hole (not shown) in the housing. The distal end of the endoscope 7 reaches the distal end of the inner sheath 2 through a fixing tube through hole 3133 in the middle of the resectioning ring fixing tube 313. The insertion end of the endoscope 7 is in clearance fit with a fixed tube through hole 3133 in the middle of the electric cutting ring fixing tube 313, and the electric cutting ring fixing tube 313 does not touch the endoscope 7 when rotating. The endoscope 7 is locked with the housing.

The electric cutting ring 312 is inserted into the electric cutting ring fixing tube 313 and then sealed by potting. That is, after the electric cutting ring 312 is inserted into the electric cutting ring fixing tube 313, the gap between the two tubes needs to be filled with glue. If not sealed, the saline enters the inside of the electric rotary working element 3 along the outer circumference of the resectioning ring-fixing tube 313 and the gap between the inner through-hole and the insertion end of the endoscope 7. As shown in fig. 4, the front seal ring 32 is fitted into an annular groove (not shown) formed in the lower portion of the front flange 331 of the frame 33, and prevents the saline from entering the interior of the electric rotary working assembly 3 along the outer periphery of the electric cutter ring fixing tube 313. The rear sealing ring 39 is mounted at one end of the electric cutting ring fixing tube 313 close to the bevel gear 36, and forms a tight fit with the insertion end of the endoscope 7, so as to prevent the physiological saline from entering the electric rotary working assembly 3 along the through hole inside the electric cutting ring fixing tube 313.

The inner sheath and the outer sheath of the electric rotary plasma resectoscope provided by the embodiment of the invention are similar to the traditional plasma resectoscope, the inner sheath, the outer sheath and the endoscope can be detached and reused, and the inlet and outlet modes and the channels of the physiological saline are consistent with those of the traditional plasma resectoscope.