阅读说明：本技术 非接触式电动旋转电切镜 (Non-contact electric rotary resectoscope ) 是由 李汉忠 熊开太 于 2021-09-09 设计创作，主要内容包括：一种非接触式电动旋转电切镜,包括外鞘、器身组件、电切环组件和线缆；外鞘可拆卸地连接在器身组件的前端；电切环组件可拆卸地连接在器身组件的后端,电切环组件包括电切环；进一步包括电机、主磁齿轮和从磁齿轮,电机与主磁齿轮直接相连,主磁齿轮与从磁齿轮通过磁力发生无接触的力连接,电机旋转,直接带动主磁齿轮旋转,主磁齿轮又进一步通过磁力带动从磁齿轮旋转,从磁齿轮旋转最终驱动电切环组件中的电切环旋转。(A non-contact electric rotary resectoscope comprises an outer sheath, a body assembly, an electric resectoscope assembly and a cable; the sheath is detachably connected to the front end of the body component; the electrical cutting ring assembly is detachably connected to the rear end of the body assembly and comprises an electrical cutting ring; further include motor, main magnet gear and follow the magnet gear, the motor links to each other with main magnet gear is direct, and main magnet gear takes place contactless power with following the magnet gear and is connected through magnetic force, and the motor is rotatory, directly drives the rotation of main magnet gear, and main magnet gear further drives again through magnetic force and follows the magnet gear rotatory, and it is rotatory to follow the electric tangent ring in the rotatory final drive electric tangent ring subassembly of magnet gear.)

1. A non-contact electric rotary resectoscope is characterized by comprising an outer sheath (1), a body assembly (2), an electric resectoscope assembly (3) and a cable (4); the sheath (1) is detachably connected to the front end of the body component (2); the electrical cut-off ring assembly (3) is detachably connected to the rear end of the body assembly (2), and the electrical cut-off ring assembly (3) comprises an electrical cut-off ring (31);

the non-contact electric rotary resectoscope comprises a motor (23), a main magnetic gear (24) and a secondary magnetic gear (33), wherein the motor (23) is directly connected with the main magnetic gear (24), the main magnetic gear (24) is in contactless force connection with the secondary magnetic gear (33) through magnetic force, the motor (23) rotates to directly drive the main magnetic gear (24) to rotate, the main magnetic gear (24) further drives the secondary magnetic gear (33) to rotate through magnetic force, and the secondary magnetic gear (33) rotates to finally drive an electric cutting ring (31) in an electric cutting ring assembly (3) to rotate.

2. The non-contact electric rotary resectoscope according to claim 1, wherein the distance between the primary magnetic gear (24) and the secondary magnetic gear (33) is no more than 5 mm;

preferably, the main magnetic gear (24) and the auxiliary magnetic gear (33) are both wrapped by plastic shells.

3. The non-contact electric rotary resectoscope according to claim 1 or 2, wherein the body assembly (2) comprises a speculum assembly (21), a bracket (22), a motor (23), a main magnet gear (24), a shell, a clamping column (27), a spring (28) and a silicon cap (29);

preferably, the housing comprises a front housing (25) and a rear housing (26);

preferably, the front shell (25) and the rear shell (26) are respectively wrapped and installed on the bracket (22);

preferably, the front shell (25) and the rear shell (26) are made of ABS or other engineering plastics;

preferably, the front casing (25) and the rear casing (26) are installed and combined into a whole to form a pistol-shaped structure, and the handle part is of a cylindrical or approximately cylindrical structure;

preferably, a trigger button is further arranged on the shell;

preferably, the bracket (22) is L-shaped, and the sight glass assembly (21) and the motor (23) are respectively arranged on two surfaces of the L-shape;

preferably, the main magnetic gear (24) is arranged on an output shaft of the motor (23), and the clamping column (27) is arranged on the rear shell (26).

4. The non-contact electric rotary resectoscope according to claim 3, wherein the clamping column (27) has a circular groove (271), a kidney-shaped notch (272) and a column-shaped boss (273); the spring (28) is arranged in the circular groove (271); the waist-shaped gap (272) is used for clamping the electric cutting ring component (3); the silica gel cap (29) is arranged at the top end of the columnar boss (273);

preferably, the rear housing (26) has a guide groove (261) in the middle, and the electrical cut-off ring assembly (3) can move back and forth in the guide groove (261).

5. The non-contact electric rotary resectoscope according to claim 3 or 4, wherein the front end of the speculum assembly (21) is provided with two camera modules and two lamps, the middle part is a hollow tube, and the electric resectoscope assembly (3) penetrates out of the hollow tube;

preferably, the lamp is an LED lamp;

preferably, the sight glass assembly (21) comprises a sight glass front end assembly (211), a sight glass inner tube (212), a sight glass outer tube (213), a sight glass seat (214) and a sight glass seat sealing ring (215);

preferably, the endoscope tube (212) and the endoscope tube (213) are coaxially arranged, and the endoscope front end assembly (211) and the endoscope seat (214) clamp the endoscope tube (212) and the endoscope tube (213) in the middle; a gap is formed between the endoscope inner tube (212) and the endoscope outer tube (213), the gap provides a channel for a camera module on the endoscope front end component (211) and a power line and a signal line of the LED lamp, and the power line and the signal line penetrate out of the endoscope seat (214) and enter the interior of the body component (2); the above components are connected and sealed to prevent the physiological saline from entering between the endoscope tube (212) and the endoscope outer tube (213).

6. The non-contact electric rotary resectoscope according to claim 5, wherein the speculum front end assembly (211) comprises a camera module (2111), a front end bracket (2112) and a lamp (2113);

preferably, the front end bracket (2112) is provided with a through channel, and the front surface of the front end bracket (2112) is provided with a first camera module hole (21121) and a second camera module hole (21122) at two sides of the channel; the two camera modules (2111) are respectively arranged in a first camera module hole (21121) and a second camera module hole (21122); a first lamp hole (21123) and a second lamp hole (21124) are formed in the front face of the front end bracket (2112); two lamps (2113) are respectively arranged in the first lamp hole (21123) and the second lamp hole (21124); the camera module (2111) and the lamp (2113) are fixed on the front end bracket;

the end surface of the front end bracket (2112) is an inclined surface;

preferably, the bevel angle is set at 20 ° -40 °, further preferably 30 °, so that the speculum assembly (21) forms a viewing angle of 30 °.

7. The non-contact electric rotary resectoscope according to any one of claims 1-6, wherein the electrical cut-off ring assembly (3) comprises an electrical cut-off ring (31), an electrical cut-off ring fixing tube (32), a slave magnetic gear (33), an electrically conductive slip ring (34), a slip ring housing (35), a slip ring end cap (36), a fixing pin (37), an electrode post (38);

preferably, the electrotomy ring (31) is a flexible, electrically conductive cable; the electric cutting ring fixing tube (32) is a hollow tube, and the electric cutting ring (31) is fixed in a hole in the middle of the electric cutting ring fixing tube (32) to form a rigid body;

preferably, after the electric cutting ring (31) penetrates through the electric cutting ring fixing tube (32), a tail end connecting lead is electrically connected with a rotor end of the conductive slip ring (34), a stator end of the conductive slip ring (34) is connected with an electrode column (38) through a lead, and the electrode column (38) is electrically connected with the plasma energy platform, so that the transmission of plasma energy is realized;

preferably, the electric cutting ring (31) and the electric cutting ring fixing pipe (32) are sealed after being installed;

preferably, the resectoscope ring (31) and the resectoscope ring fixing tube (32) are fixedly connected together to form a resectoscope kit, the non-contact electric rotary resectoscope comprises a plurality of resectoscope kits, and the resectoscope ring (31) and the resectoscope ring fixing tube (32) in the plurality of resectoscope kits have different specifications for doctors to select.

8. The non-contact electric rotary resectoscope according to claim 7, wherein the fixing pin (37) is provided with a first annular groove (371) and a second annular groove (372); the electrical cut-off ring assembly (3) is inserted into the body assembly (2) and is connected with the clamping column (27) of the body assembly (2) through a fixing pin (37).

9. The non-contact electric rotary resectoscope according to any one of claims 1-8, wherein the speculum base sealing ring (215) is tightly matched with the periphery of the resectoscope ring fixing tube (32) to block the physiological saline from entering the inside of the body assembly (2);

preferably, the rear shell (26) and the slip ring shell (35) are positioned between the slave magnetic gear (33) and the master magnetic gear (24) to isolate the slave magnetic gear (33) from the master magnetic gear (24) and prevent the physiological saline from entering the body component (2).

10. The non-contact electric rotary resectoscope according to any one of claims 1-9, wherein the cable (4) is mounted at the handle tail of the body assembly (2);

preferably, the electrical cutting ring assembly (3) is disposable and is discarded after use without cleaning and sterilization; the rest parts can be repeatedly used.

Technical Field

The invention belongs to the technical field of medical instruments. In particular to a non-contact electric rotating resectoscope.

Background

The 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. This operating mode has low cutting efficiency, and the time of one operation varies from half an hour to two or three hours, so that the finger joints are subjected to tens of to hundreds of different operating movements. And due to factors such as poor stability of operation action, fatigue of finger joints, long-time lifting of two arms and the like, the standardization, safety, excision range, hemostasis effect and the like of the operation cutting are uncertain.

Traditional resectoscope all adopts 2D hard tube optical lens to generate the image, does not have the third dimension, and the doctor can't accurately judge the shape structure of tissue.

Transurethral resectoscopic surgical devices have been in use for decades, with no major changes to the basic device. It is in this context that the present invention is presented. The invention makes creative changes in the aspects of the operation mode of the resectoscope operation, the tissue cutting mode, the cutting frequency, the hemostasis reliability, the mode of the visual image and the like.

Disclosure of Invention

The traditional motor-driven rotating mechanism is in meshing transmission by a motor driving gear. The gears are meshed with each other during transmission, the gears are easy to wear, the noise is high during movement, and the assembly requirement on the gears is high.

The invention is a non-contact electric rotary cutting mode, greatly improves the cutting efficiency, lightens the fatigue strength of the arm and the finger of an operator, can definitely improve the reliability and the safety of the operation, and has low noise and good waterproof sealing performance during the operation.

The transmission part of the non-contact electric rotary resectoscope comprises a motor and two magnetic gears (a main magnetic gear and a secondary magnetic gear). The motor provides power for the resectoscope, so that the operation is time-saving and labor-saving. When a doctor triggers the resectoscope, the motor drives the main magnetic gear, the main magnetic gear drives the slave magnetic gear to rotate, and the slave magnetic gear drives the resectoscope ring to rotate and excise. The main magnetic gear and the auxiliary magnetic gear are non-contact, and the distance between the two magnetic gears is preferably set to be not more than 5 mm. The two magnetic gears are wrapped by the plastic shell, and the waterproof sealing of the resectoscope is facilitated.

The embodiment of the invention provides a non-contact electric rotary resectoscope which comprises an outer sheath (1), a body assembly (2), an electric resectoscope assembly (3) and a cable (4); the sheath (1) is detachably connected to the front end of the body component (2); the electrical cut-off ring assembly (3) is detachably connected to the rear end of the body assembly (2), and the electrical cut-off ring assembly (3) comprises an electrical cut-off ring (31);

the non-contact electric rotary resectoscope comprises a motor (23), a main magnetic gear (24) and a secondary magnetic gear (33), wherein the motor (23) is directly connected with the main magnetic gear (24), the main magnetic gear (24) is in contactless force connection with the secondary magnetic gear (33) through magnetic force, the motor (23) rotates to directly drive the main magnetic gear (24) to rotate, the main magnetic gear (24) further drives the secondary magnetic gear (33) to rotate through magnetic force, and the secondary magnetic gear (33) rotates to finally drive an electric cutting ring (31) in an electric cutting ring assembly (3) to rotate.

According to one embodiment of the invention, for example, the distance between the main magnetic gear (24) and the secondary magnetic gear (33) does not exceed 5 mm;

preferably, the main magnetic gear (24) and the auxiliary magnetic gear (33) are both wrapped by plastic shells.

According to one embodiment of the invention, for example, the body assembly (2) comprises a sight glass assembly (21), a bracket (22), a motor (23), a main magnetic gear (24), a shell, a clamping column (27), a spring (28) and a silicon rubber cap (29);

preferably, the housing comprises a front housing (25) and a rear housing (26);

preferably, the front shell (25) and the rear shell (26) are respectively wrapped and installed on the bracket (22);

preferably, the front shell (25) and the rear shell (26) are made of ABS or other engineering plastics;

preferably, the front casing (25) and the rear casing (26) are installed and combined into a whole to form a pistol-shaped structure, and the handle part is of a cylindrical or approximately cylindrical structure;

preferably, a trigger button is further arranged on the shell;

preferably, the bracket (22) is L-shaped, and the sight glass assembly (21) and the motor (23) are respectively arranged on two surfaces of the L-shape;

preferably, the main magnetic gear (24) is arranged on an output shaft of the motor (23), and the clamping column (27) is arranged on the rear shell (26).

According to one embodiment of the invention, for example, the clamp column (27) has a circular groove (271), a waist-shaped notch (272) and a column-shaped boss (273); the spring (28) is arranged in the circular groove (271); the waist-shaped gap (272) is used for clamping the electric cutting ring component (3); the silica gel cap (29) is arranged at the top end of the columnar boss (273);

preferably, the rear housing (26) has a guide groove (261) in the middle, and the electrical cut-off ring assembly (3) can move back and forth in the guide groove (261).

According to one embodiment of the invention, for example, the front end of the sight glass assembly (21) is provided with two camera modules and two lamps, the middle part is a hollow pipe, and the electric cutting ring assembly (3) penetrates out of the hollow pipe;

preferably, the lamp is an LED lamp;

preferably, the sight glass assembly (21) comprises a sight glass front end assembly (211), a sight glass inner tube (212), a sight glass outer tube (213), a sight glass seat (214) and a sight glass seat sealing ring (215);

preferably, the endoscope tube (212) and the endoscope tube (213) are coaxially arranged, and the endoscope front end assembly (211) and the endoscope seat (214) clamp the endoscope tube (212) and the endoscope tube (213) in the middle; a gap is formed between the endoscope inner tube (212) and the endoscope outer tube (213), the gap provides a channel for a camera module on the endoscope front end component (211) and a power line and a signal line of the LED lamp, and the power line and the signal line penetrate out of the endoscope seat (214) and enter the interior of the body component (2); the above components are connected and sealed to prevent the physiological saline from entering between the endoscope tube (212) and the endoscope outer tube (213).

According to one embodiment of the invention, for example, a speculum front end assembly (211) includes a camera module (2111), a front end bracket (2112), and a light (2113);

preferably, the front end bracket (2112) is provided with a through channel, and the front surface of the front end bracket (2112) is provided with a first camera module hole (21121) and a second camera module hole (21122) at two sides of the channel; the two camera modules (2111) are respectively arranged in a first camera module hole (21121) and a second camera module hole (21122); a first lamp hole (21123) and a second lamp hole (21124) are formed in the front face of the front end bracket (2112); two lamps (2113) are respectively arranged in the first lamp hole (21123) and the second lamp hole (21124); the camera module (2111) and the lamp (2113) are fixed on the front end bracket;

the end surface of the front end bracket (2112) is an inclined surface;

preferably, the bevel angle is set at 20 ° -40 °, further preferably 30 °, so that the speculum assembly (21) forms a viewing angle of 30 °.

According to one embodiment of the invention, for example, the electrical cut-off ring assembly (3) comprises an electrical cut-off ring (31), an electrical cut-off ring fixing tube (32), a secondary magnetic gear (33), a conductive slip ring (34), a slip ring housing (35), a slip ring end cover (36), a fixing pin (37) and an electrode column (38);

preferably, the electrotomy ring (31) is a flexible, electrically conductive cable; the electric cutting ring fixing tube (32) is a hollow tube, and the electric cutting ring (31) is fixed in a hole in the middle of the electric cutting ring fixing tube (32) to form a rigid body;

preferably, after the electric cutting ring (31) penetrates through the electric cutting ring fixing tube (32), a tail end connecting lead is electrically connected with a rotor end of the conductive slip ring (34), a stator end of the conductive slip ring (34) is connected with an electrode column (38) through a lead, and the electrode column (38) is electrically connected with the plasma energy platform, so that the transmission of plasma energy is realized;

preferably, the electric cutting ring (31) and the electric cutting ring fixing pipe (32) are sealed after being installed;

preferably, the resectoscope ring (31) and the resectoscope ring fixing tube (32) are fixedly connected together to form a resectoscope kit, the non-contact electric rotary resectoscope comprises a plurality of resectoscope kits, and the resectoscope ring (31) and the resectoscope ring fixing tube (32) in the plurality of resectoscope kits have different specifications for doctors to select.

According to one embodiment of the invention, for example, the fixing pin (37) is provided with a first annular groove (371) and a second annular groove (372); the electrical cut-off ring assembly (3) is inserted into the body assembly (2) and is connected with the clamping column (27) of the body assembly (2) through a fixing pin (37).

According to one embodiment of the invention, for example, a speculum base sealing ring (215) is tightly matched with the periphery of the electric excision ring fixing tube (32) and blocks the physiological saline from entering the inner part of the body assembly (2);

preferably, the rear shell (26) and the slip ring shell (35) are positioned between the slave magnetic gear (33) and the master magnetic gear (24) to isolate the slave magnetic gear (33) from the master magnetic gear (24) and prevent the physiological saline from entering the body component (2).

According to one embodiment of the invention, for example, the cable (4) is mounted at the handle tail of the body assembly (2);

preferably, the electrical cutting ring assembly (3) is disposable and is discarded after use without cleaning and sterilization; the rest parts can be repeatedly used.

The invention has the following beneficial technical effects:

(1) the non-contact electric rotary resectoscope provided by the invention drives the magnetic gear to drive the electric resectoscope ring to do 360-degree three-dimensional rotary cutting movement by the motor, and a doctor can easily operate the non-contact electric rotary resectoscope. Compared with the traditional manual linear reciprocating cutting mode, the cutting efficiency is higher.

(2) The front end of the non-contact electric rotary resectoscope provided by the invention is provided with the two camera modules, so that a 3D image can be generated, a doctor can more visually observe the structure and the shape of a tissue, and the tissue resection is more accurate.

(3) The non-contact electric rotary resectoscope provided by the invention adopts magnetic gear transmission, and the two magnetic gears are in no contact with each other, so that the waterproof sealing effect is good, and the working noise is low.

(4) The non-contact electric rotating resectoscope product provided by the invention is in a pistol-shaped structure, is convenient for a doctor to hold and accords with ergonomics.

(5) After the non-contact electric rotary resectoscope provided by the invention changes the appearance of a product, the non-contact electric rotary resectoscope can be installed at the tail end of a mechanical arm of a surgical robot for use, and has strong universality.

(6) According to the traditional resectoscope, the whole resectoscope needs to be pulled out when the resectoscope ring is replaced, and the urethra is reinserted after the resectoscope is replaced. The time for replacing the resectoscope ring is longer, and the patient is more painful when reinserting the urethra. When the non-contact electric rotary resectoscope provided by the invention is used for replacing an electric resectoscope, the resectoscope does not need to be completely pulled out, only the electric resectoscope component needs to be pulled out, and a new electric resectoscope component needs to be replaced, so that the replacement time is relatively fast, and the pain of a patient is less.

(7) The non-contact electric rotary resectoscope provided by the invention divides the resectoscope into two detachable parts through a non-contact power transmission structure, wherein the resectoscope component driven by the magnetic gear is made of a low-cost material and is discarded after being used once, so that the complex operations of cleaning and disinfection are avoided, and the possibility of mutual infection among patients is also avoided. The main magnetic gear part driven by the motor is designed to be repeatedly used. The front part and the rear part are designed differently, so that the problem of cross infection is solved, and the manufacturing cost is effectively reduced.

Drawings

Fig. 1 is an overall view of a non-contact electric rotary resectoscope according to an embodiment of the present invention.

Fig. 2 is an exploded view of a non-contact electric rotary resectoscope according to an embodiment of the present invention.

Fig. 3 is an exploded view of the body assembly 2 of the non-contact electric rotary resectoscope provided by the present invention.

Fig. 4 is a structural view of a bayonet 27 in the non-contact electric rotary resectoscope according to the present invention.

Fig. 5 is a structural diagram of the rear housing 26 of the non-contact electric rotary resectoscope provided in the practice of the present invention.

Fig. 6 is an overall view of a scope assembly 21 in the non-contact electric rotary resectoscope according to the embodiment of the present invention.

Fig. 7 is an exploded view of the endoscope assembly 21 of the non-contact electric rotary resectoscope according to the embodiment of the present invention.

FIG. 8 is a cross-sectional view of the endoscope assembly 21 of the non-contact electric rotary resectoscope according to an embodiment of the present invention.

Fig. 9 is an exploded view of the endoscope front end assembly 211 of the non-contact electric rotary resectoscope according to the present invention.

Fig. 10 is a structural view of a front end holder 2112 in the non-contact electric rotary resectoscope provided by the embodiment of the present invention.

Fig. 11 is an overall view of the electrical cut-off ring assembly 3 in the non-contact electric rotary resectoscope provided by the embodiment of the present invention.

Fig. 12 is an exploded view of the electrical cut-off ring assembly 3 in the non-contact electric rotary resectoscope provided by the embodiment of the present invention.

Fig. 13 is an assembly view of the electrical cut-off ring assembly 3 of the non-contact electric rotary resectoscope provided by the embodiment of the present invention with the slip ring housing and the slip ring end cover removed.

Fig. 14 is a structural view of a fixing pin 37 in the noncontact electric rotary resectoscope according to the embodiment of the present invention.

Fig. 15 is a structural view of the non-contact electric rotary resectoscope provided by the embodiment of the present invention in a surgical state.

Fig. 16 is a sectional view of the entire noncontact electric rotary resectoscope according to the embodiment of the present invention.

Fig. 17 is a cross-sectional view of the non-contact electric rotary resectoscope provided by the embodiment of the present invention after the fixing pin 37 is engaged with the engaging post 27.

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 an overall view of a non-contact electric rotary resectoscope according to an embodiment of the present invention. As can be seen from fig. 1, the non-contact electric rotary resectoscope provided by the embodiment of the present invention has a simple and clear overall appearance, and is practical and aesthetic.

In order to further show the main structure of the non-contact electric rotating resectoscope provided by the embodiment of the present invention, fig. 2 shows an exploded view of the non-contact electric rotating resectoscope. As shown in fig. 2, the non-contact electric rotary resectoscope provided by the embodiment of the present invention comprises an outer sheath 1, a body assembly 2, an electrical cutter ring assembly 3 and a cable 4. The outer sheath 1 is detachably attached to the front end of the body assembly 2. The electrical cut-off ring assembly 3 is detachably connected to the rear end of the body assembly 2. The cable 4 is mounted at the handle tail of the body assembly 2.

The electrical cutting ring component 3 is disposable and is discarded after use without cleaning and sterilization. The rest parts can be repeatedly used.

Fig. 3 is an exploded view of the body assembly 2 of the non-contact electric rotary resectoscope provided by the present invention. The body assembly 2 comprises a sight glass assembly 21, a bracket 22, a motor 23, a main magnetic gear 24, a shell (comprising a front shell 25 and a rear shell 26), a clamping column 27, a spring 28 and a silica gel cap 29. The front shell 25 and the rear shell 26 are respectively wrapped and mounted on the bracket 22. The front shell 25 and the rear shell 26 are made of ABS or other engineering plastics and are harmless to human bodies. The front housing 25 and the rear housing 26 are mounted to be integral to form a pistol-shaped structure, the handle portion is cylindrical or nearly cylindrical and sized to be held by a single hand of a doctor. The shell is also provided with a trigger button. The shape of the shell can also be changed, the non-contact electric rotary resectoscope provided by the invention is arranged at the tail end of a mechanical arm of a surgical robot, a trigger button can be removed and is directly connected by a lead, and a doctor operating end sends a control signal to realize the purpose of electric control of the non-contact electric rotary resectoscope. The bracket 22 is L-shaped, and the sight glass assembly 21 and the motor 23 are respectively arranged on two surfaces of the L-shape. The main magnet gear 24 is mounted on an output shaft of the motor 23, and the motor 23 rotates with the main magnet gear 24. The latch posts 27 are mounted on the rear housing 26.

Fig. 4 is a structural view of a bayonet 27 in the non-contact electric rotary resectoscope according to the present invention. As shown in fig. 4, the latch 27 has a circular groove 271, a waist-shaped notch 272, and a cylindrical boss 273. The spring 28 is mounted in the circular groove 271. The waist-shaped notch 272 is used to engage the electrical cut-off ring assembly 3 (described further below). The silica gel cap 29 is mounted on the top end of the column boss 273.

Fig. 5 is a structural diagram of the rear housing 26 of the non-contact electric rotary resectoscope provided in the practice of the present invention. As shown in fig. 5, the rear housing 26 has a guide groove 261 in the middle, and the electrical cut ring assembly 3 can move back and forth in the guide groove 261. The shape of the guide groove 261 may be set according to the outer shape of the electrical cut ring assembly 3. For example, if the electrical cut ring assembly 3 has a circular outer shape, the guide groove 261 is also provided in a circular shape.

Fig. 6 is an overall view of a scope assembly 21 in the non-contact electric rotary resectoscope according to the embodiment of the present invention. As shown in fig. 6, the front end of the sight glass assembly 21 has two camera modules and two LED lamps, and the middle is a hollow tube, and the electrical cut-off ring assembly 3 (described further below) penetrates through the middle. Two modules of making a video recording can generate three-dimensional stereo image, and the doctor observes the image more directly perceived when doing the operation.

Fig. 7 is an exploded view of the endoscope assembly 21 of the non-contact electric rotary resectoscope according to the embodiment of the present invention. As shown in FIG. 7, the speculum assembly 21 includes a speculum nose assembly 211, a speculum tube 212, a speculum tube 213, a speculum base 214 and a speculum base seal 215.

FIG. 8 is a cross-sectional view of the endoscope assembly 21 of the non-contact electric rotary resectoscope according to an embodiment of the present invention. As shown in fig. 8, the endoscope tube 212 and the endoscope tube 213 are coaxially arranged, and the endoscope front end assembly 211 and the endoscope holder 214 sandwich the endoscope tube 212 and the endoscope tube 213. The endoscope tube 212 and the endoscope tube 213 have a gap therebetween, which provides a passage for the camera module and the power and signal wires (not shown) of the LED lamp on the endoscope head assembly 211 to pass out of the endoscope base 214 and into the interior of the body assembly 2. The above components are sealed after being connected (e.g., can be sealed with glue) to ensure that saline does not enter between the endoscope tube 212 and the endoscope tube 213.

Fig. 9 is an exploded view of the endoscope front end assembly 211 of the non-contact electric rotary resectoscope according to the present invention. As shown in fig. 9, the endoscope front end assembly 211 includes a camera module 2111 (preferably, two camera modules are provided), a front end holder 2112, and an LED lamp 2113 (preferably, two camera modules are provided).

Fig. 10 is a structural view of a front end holder 2112 in the non-contact electric rotary resectoscope provided by the embodiment of the present invention. As shown in fig. 10, the front end bracket 2112 has a passage therethrough, and the front end bracket 2112 is provided with a first camera module hole 21121 and a second camera module hole 21122 on both sides of the passage. The two camera modules 2111 are respectively installed in the first camera module hole 21121 and the second camera module hole 21122. The front end bracket 2112 is provided with a first lamp hole 21123 and a second lamp hole 21124 on the front side. Two lamps (e.g., LED lamps) 2113 are installed in the first and second lamp holes 21123 and 21124, respectively. The camera module 2111 and the LED light 2113 are both fixed to the front bracket (e.g., with glue). The end surface of the front end bracket 2112 is a single inclined surface. Preferably, the bevel angle is set at 20 ° -40 °, and more preferably 30 °, such that the speculum assembly 21 forms a viewing angle of 30 °. If the angle of the viewing angle is to be changed, only the end face inclination angle of the front end bracket 2112 needs to be changed. The shape and size of the camera module hole and the lamp hole can be flexibly set according to the camera module and the lamp installed therein, and a square shape is shown in fig. 10.

Fig. 11 is an overall view of an electrical cut ring assembly 3 in a non-contact electric rotary resectoscope according to an embodiment of the present invention, fig. 12 is an exploded view of the electrical cut ring assembly 3 in the non-contact electric rotary resectoscope according to the embodiment of the present invention, and fig. 13 is an assembled view of the electrical cut ring assembly 3 in the non-contact electric rotary resectoscope according to the embodiment of the present invention with a slip ring housing and a slip ring end cover removed. As shown in fig. 12, the electrical cut-off ring assembly 3 includes an electrical cut-off ring 31, an electrical cut-off ring fixing tube 32, a secondary magnetic gear 33, a conductive slip ring 34, a slip ring housing 35, a slip ring end cover 36, a fixing pin 37, and an electrode column 38. The resecting ring 31 is a substantially flexible conductive cable, and it is necessary to ensure that the resecting ring 31 does not deform and maintains a certain rigidity when rotating to cut tissue. The electric cutting ring fixing tube 32 is a hollow tube, and the electric cutting ring 31 is fixed in a hole in the middle of the electric cutting ring fixing tube 32 to form a rigid body. After the electric cutting ring 31 passes through the electric cutting ring fixing tube 32, the tail end connection (for example, welding) lead is electrically connected with a rotor end (not shown) of the conductive slip ring 34, a stator end (not shown) of the conductive slip ring 34 is connected with the electrode column 38 through a lead, and the electrode column 38 is electrically connected with the plasma energy platform, so that the plasma energy is transferred. The resectioning ring 31 and the resectioning ring fixation tube 32 are sealed after installation (e.g., by potting with glue). In the embodiment of the invention, the electric cutting ring 31 and the electric cutting ring fixing tube 32 are fixedly connected together, so that the electric cutting ring cannot be reused and cannot be detached. In clinical use, the electric cutting ring 31 with different thicknesses and different shapes can be connected with the electric cutting ring fixing tube 32 in advance according to requirements and is arranged on the electric cutting ring component 3 for selection of clinicians.

Fig. 14 is a structural view of a fixing pin 37 in the noncontact electric rotary resectoscope according to the embodiment of the present invention. As shown in fig. 14, the fixing pin 37 has two annular grooves including a first annular groove 371 and a second annular groove 372. The electrical cut ring assembly 3 is inserted into the body assembly 2 and connected to the latching legs 27 of the body assembly 2 by fixing pins 37. Due to the requirements of the surgical action, the electrical cut ring assembly 3 needs to be moved back and forth on the body assembly 2. Before operation, the electrical incision ring 31 is needed inside the sheath, as shown in fig. 1, and the position of the electrical incision ring assembly 3 is defined as position one. In the position one, the first annular groove 371 of the fixing pin 37 is engaged with the waist-shaped notch 272 of the engaging column 27. During the operation, the electrical cutting ring 31 needs to extend out of the outer sheath, as shown in fig. 15, and the position of the electrical cutting ring assembly 3 is defined as position two. In the second position, the second annular groove 372 of the fixing pin 37 is engaged with the kidney-shaped notch 272 of the engaging column 27. When the silicone cap 29 is pressed, the locking pin 27 moves against the spring 28, the locking pin 37 is released, and the electrical cut-off ring assembly 3 can move freely back and forth in the circular guide groove 261 of the rear housing 26.

Fig. 16 is a sectional view of the entire noncontact electric rotary resectoscope according to the embodiment of the present invention.

Fig. 17 is a cross-sectional view of the non-contact electric rotary resectoscope provided by the embodiment of the present invention after the fixing pin 37 is engaged with the engaging post 27.

As shown in fig. 16, the motor 23 drives the main magnetic gear 24 to rotate, the main magnetic gear 24 drives the secondary magnetic gear 33 to rotate under the action of the magnetic field, and the secondary magnetic gear 33 drives the electrical cutting ring fixing tube 32 to rotate together, so as to drive the electrical cutting ring 31 to rotate. The distance between the main magnetic gear 24 and the auxiliary magnetic gear 33 needs to be kept within a certain distance (preferably 5mm), so that the torque required by the rotation of the electric cutting ring 31 can be ensured. If the area of the two magnetic gears is increased, the distance between the two magnetic gears can be increased properly. The two magnetic gears are in non-contact, and compared with the traditional gear contact transmission, the magnetic gear transmission device is more flexible in installation, free of noise during movement and easier to detach and install. The electrical cut-off ring component 3 can be easily pulled out after being used and can be replaced by a new electrical cut-off ring component after being inserted.

In the embodiment of the present invention, the resecting ring 31 and the resecting ring fixing tube 32 are sealed after being assembled (for example, sealed by pouring glue), and the physiological saline only enters the inside of the body assembly 2 along the outer circumference of the resecting ring fixing tube 32. As shown in fig. 8, the endoscope seat sealing ring 215 is tightly fitted to the outer circumference of the resectoscope ring fixing tube 32, and functions as an inner portion of the body assembly 2 for blocking the entry of the saline. In addition, since there is no contact between the secondary magnetic gear 33 and the primary magnetic gear 24, and the rear housing 26 and the slip ring housing 35 are isolated from each other, the saline is further prevented from entering the body assembly 2, and the risk of short circuit of the motor 23 by the saline is further reduced. Therefore, the waterproof effect of the embodiment of the invention can be better ensured.