CN112190325A

CN112190325A - Minimally invasive surgical instrument for bladder polyp

Info

Publication number: CN112190325A
Application number: CN202011109934.0A
Authority: CN
Inventors: 韩从辉; 史振铎; 汪彦刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-01-08
Anticipated expiration: 2040-10-16
Also published as: CN112190325B

Abstract

The invention discloses a minimally invasive surgical instrument for bladder polyp, which comprises an outer sleeve, an operating tube, a bending manipulator and a butt joint center, wherein the outer sleeve is a hollow tube, the operating tube is formed by sequentially connecting a front-end tube part, a magnetic matching part, a bending connecting part, an iron core tube part and a rear-end tube part from front to back, the bending manipulator comprises an operating shell, a sliding seat conducting plate, a sliding block and a battery, a high-frequency current butt joint, an ocular, an argon gas inflation joint, an illuminating optical fiber joint cone and a compensator are arranged in the butt joint center, a positive electrode tube comprises a high-frequency current lead, an electrode tip and a lead protective layer, and a camera head structure comprises an illuminating optical fiber, an. The invention has the technical advantages of simplified operation, adjustable curvature and greatly reduced operation difficulty.

Description

Minimally invasive surgical instrument for bladder polyp

Technical Field

The invention relates to the technical field of medical instruments, in particular to a minimally invasive surgical instrument for bladder polyps.

Background

Bladder polyps are redundant lumps growing on bladder mucosa, frequent, urgent and painful urination and hematuria symptoms can be caused when the polyps are festered and bleed, and at present, the bladder polyps are mainly removed by a medical high-frequency electrotome.

A high-frequency electric knife (high-frequency surgical instrument) is an electric surgical instrument for replacing a mechanical surgical knife to cut tissues. The tissue is heated when the high-frequency high-voltage current generated by the tip of the effective electrode contacts with the body, so that the separation and coagulation of the body tissue are realized, and the purposes of cutting and hemostasis are achieved. The circuit consists of a high-frequency generator in the high-frequency electrotome, a patient polar plate, a connecting lead and an electrode. The high-frequency electric knife gathers the high-frequency current with high current density to directly destroy the tissue under the point of contact with the tip of the effective electrode. Coagulation occurs when the temperature of the tissue or cells in contact with or adjacent to the active electrode rises to denature proteins in the cells, the precise surgical effect being determined by the waveform, voltage, current, type of tissue and shape and size of the electrode.

To avoid continued heating of the tissue as the current leaves the patient and returns to the high frequency knife, which could burn the patient, the patient plate in a monopolar device must have a relatively large area in contact with the patient to provide a path of low impedance and low current density. Some high-frequency electric knives used in doctor clinics have small current and low density, and can not use a patient plate, but most general high-frequency electric knives use large current, so the patient plate is needed.

At present, in minimally invasive operations of bladder polyp, the high-frequency electrotome is widely applied and has obvious effect. However, the use of high frequency electrotomes also presents its own problems.

When the high-frequency electrotome is used, the electrode tube is sleeved in the outer sleeve, the high-frequency electrotome is inserted into a bladder from a urethra, polyps in the bladder are cauterized and cut, and the outer sleeve and the electrode tube of the high-frequency electrotome are both hard straight tubes. For polyps at the lower part of the bladder, particularly at the position of the bladder close to the urethra, the conventional high-frequency electrotome head is difficult to align to the polyps, and an operator is required to press the abdomen or the urethra of a patient in an auxiliary manner, so that the posture of the patient is greatly changed, the shape of the bladder is changed, and other operations are troublesome, and the operation risk in the cutting process is increased.

Disclosure of Invention

The invention aims to solve the problems mentioned in the background technology and provide a minimally invasive surgical instrument for bladder polyps, the front end of which has a steering function.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

minimally invasive surgical instruments for bladder polyps, wherein: the operating tube is formed by sequentially connecting a front end tube part, a magnetic matching part, a bending connecting part, an iron core tube part and a rear end tube part, wherein the front end tube part and the rear end tube part are both made of plastic or glass materials, the magnetic matching part is formed by an upper magnetic arc plate, a connecting arc plate and a lower magnetic arc plate which are fixedly embraced together, the upper magnetic arc plate is positioned at the upper part, the lower magnetic arc plate is positioned at the lower part, the connecting arc plate fixes the upper magnetic arc plate together with the lower magnetic arc plate, the magnetic poles of the upper magnetic arc plate and the lower magnetic arc plate are both arranged at the two ends, and the directions of the magnetic poles of the upper magnetic arc plate and the lower magnetic arc plate are opposite, the bending connecting part comprises an upper flexible part, a middle flexible connecting part and a lower flexible part, the front and back length of the upper flexible part is greater than the front and back length of the lower flexible part, the middle flexible connecting part is made of non-conductive elastic materials and is used for connecting the upper flexible part and the lower flexible part, the upper flexible part and the lower flexible part can be folded and compressed, a spring wire moving forwards and backwards is arranged in the lower flexible part, the elastic coefficient of the spring wire is greater than that of the upper flexible part and the lower flexible part, the iron core pipe part penetrates through the bending manipulator, a coil is wound on the outer side of the part of the iron core pipe part, which is positioned in the bending manipulator, the bending manipulator comprises an operation shell, a sliding seat conductive plate, a sliding block and a battery, the operation shell is fixed on the iron core pipe part, a through groove is arranged on the operation shell, the sliding block comprises a sliding body and a conductive block, the sliding body is, the slide seat current-conducting plate is fixed in the inner side of operation shell body, on the slide seat current-conducting plate a slide groove is set, the main body portion of current-conducting block is blocked in the slide groove and can be slided back and forth in the slide groove, the lower end of the current-conducting block is contacted with coil, one end of the coil is connected with one pole of battery, and the slide seat current-conducting plate is connected with another pole of battery, on the connecting line of slide seat current-conducting plate and battery a switch is mounted, the coil, current-conducting block, slide seat current-conducting plate and battery can be formed into a loop, when the coil is powered on, the iron core tube portion can be magnetized, and the front end magnetic pole of the iron core tube portion and upper magnetic arc plate can be repelled mutually and attracted mutually attracted with lower magnetic arc plate, and the rear end of rear end tube portion is connected into butt-joint centre, and the butt-joint centre is equipped with high, the rear end of the operating tube penetrates through the compensator and is connected with the high-frequency current butt joint, the electrode end part extends out of the front end tube part, the wire sheath is wrapped outside the high-frequency current wire and is used for protecting the high-frequency current wire, the camera structure comprises an illuminating optical fiber, an image transmitting optical fiber and a camera, the front end of the image transmitting optical fiber is connected with the camera, the rear end of the image transmitting optical fiber penetrates through the compensator and is butted with an eyepiece, the camera is installed in the front of the inner cavity of the front end tube part and is used for shooting the visual field of the electrode end part, the front end of the illuminating optical fiber is fixed on the side surface of the camera, the rear end of the illuminating optical fiber penetrates through the compensator and is butted with a cone of the illuminating optical fiber joint, the illuminating optical fiber is used for providing illumination to the front of the camera, an axial cavity in the operating tube is an air guide channel, the rear end of the, the compensator is a closed square container, one side wall of the compensator seals the rear end of the rear end pipe part, the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead sheath simultaneously penetrate through the rear end of the rear end pipe part and the compensator, and the parts of the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead sheath, which are positioned in the compensator, are provided with folding bends, so that when the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead sheath, which are positioned in the front of the operation pipe, extend forwards, the folding bends in the compensator can correspondingly expand to compensate the lengths of the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead sheath in.

In order to optimize the technical scheme, the specific measures adopted further comprise:

the rear end of the magnetic matching part is inclined, and the inclined direction is up-short and down-long, so that the installation space of the upper flexible part is larger than that of the lower flexible part.

The upper flexible part and the lower flexible part are made of silica gel.

The inner side of the front end pipe part is provided with a fixing frame which is a hollow frame with a front through hole and a rear through hole, the fixing frame is fixedly connected with the inner side surface of the front end pipe part, and the fixing frame is fixedly connected with the front parts of the lighting optical fibers, the image transmission optical fibers and the wire protective layer.

The inner side of the iron core tube part is provided with a limiting frame which is a hollow frame with a front through hole and a rear through hole, the limiting frame is fixedly connected with the inner side surface of the iron core tube part, and the lighting optical fiber, the image transmission optical fiber and the lead sheath pass through the limiting frame and can slide relative to the limiting frame.

The operation shell is provided with scales for indicating the contact position of the conductive block and the coil.

The high-frequency current butt joint can be connected with an external high-frequency power supply, the eyepiece can be connected with an external display device, the argon gas inflation joint can be connected with an external argon gas source, and the illumination optical fiber joint cone can be connected with an external light source.

The camera is a CCD camera.

An eyepiece protective cover for protecting the eyepiece is arranged outside the eyepiece.

The invention has the following advantages:

1. the positive electrode tube and the camera of the existing minimally invasive electrotome for the bladder polyp are independent from the inner sleeve, and each time the operation is carried out, the camera needs to extend out of the front end of the inner sleeve, the visual field of the camera is enlarged, the bladder polyp position is seen clearly, the inner sleeve is moved to be aligned with the bladder polyp, the camera is retracted, the positive electrode tube is moved forwards, the bladder polyp minimally invasive surgical instrument fixes the positive electrode tube, the camera structure and the operating tube together, can bend the front end of the operating tube by bending the operator, therefore, the camera can see a large number of visual fields on the basis of not extending out of the operation tube, so that the positive electrode tube can be always kept in a working position, the trouble of back and forth transposition of the camera and the positive electrode tube is eliminated, and the operation is greatly simplified.

2. The operating tube is provided with the magnetic matching part, the bending connecting part and the iron core tube part, the iron core tube part is provided with the coil, when the coil is electrified, the iron core tube part can be magnetized, the whole structure of the operating tube is small, the weight is light, the magnetized iron core tube part has enough magnetic force to push the magnetic matching part, the upper magnetic arc plate is repelled, the lower magnetic arc plate is adsorbed, the bending connecting part is made to be in a downward bending shape, the bending of the operating tube is realized, the bent operating tube is more convenient to be close to the lower part of a bladder, particularly the position of the bladder close to a urethra opening compared with a straight tube, therefore, the polyp at the lower part of the bladder is convenient to cut, the whole bottom crossing of the operating tube does not need.

3. The bending angle of the operating pipe is adjustable: the connecting position of the sliding block and the coil is manually changed through the bending operator, so that the number of turns of the coil of the power supply is changed, the number of turns of the coil is changed under the condition that the current is not changed, the magnetic force of the iron core tube part is changed, and in order to further improve the change range of bending, the spring wire which runs forwards and backwards is arranged in the lower flexible part. Because the absorption that relies on magnetism to produce and the driving force is great according to the distance change, consequently, only rely on the electromagnetic force of iron core pipe portion, can only accomplish qualitative control and go up the magnetic arc board and keep away from iron core pipe portion, the magnetic arc board is close to iron core pipe portion down, quantitative control can't be accomplished, and the existence of spring wire, then can be through the elastic modulus who sets up the spring wire, make down the magnetic arc board can be close to or keep away from iron core pipe portion under the magnetic force of difference, realize quantitative control, thereby it is adjustable to make the operating tube angle of flexure.

4. The invention is provided with a compensator, because the whole length of the front part of the operation tube is increased when the operation tube is bent, so that the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead protective layer can be pulled, in order to solve the problem, the compensator is added in the butt joint center, a section of the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead protective layer are folded and bent in the compensator, when the operation tube is bent, the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead protective layer at the front end of the operation tube are pulled, the folded and bent part in the compensator is pulled out, the part needing to be lengthened is compensated, so that the lighting optical fiber, the image transmission optical fiber, the high-frequency current lead and the lead protective layer at the front end of the operation tube can not be pulled apart, when the operation tube is straightened, the lighting optical fiber, the image transmission optical fiber, the high-, The image transmission optical fiber, the high-frequency current conducting wire and the conducting wire protective layer enter the compensator to be folded and bent. The invention is provided with the limiting frame for ensuring that the lighting optical fiber, the image transmission optical fiber and the wire protective layer normally slide in the operating tube and cannot be bent and blocked in the air guide channel.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of the portion A of FIG. 1;

FIG. 3 is an enlarged view of the portion B of FIG. 1;

FIG. 4 is an enlarged view of the structure of the portion C of FIG. 1;

FIG. 5 is an enlarged view of the structure of the portion D in FIG. 1;

FIG. 6 is a schematic view of a bend operator;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a top view of a slide conductive plate;

FIG. 9 is a schematic diagram of a docking hub;

FIG. 10 is a view showing the outer tube in a bent state;

FIG. 11 is an enlarged view of the structure of section E of FIG. 10;

fig. 12 is an external view of fig. 10.

The label names in the figure: the device comprises an outer sleeve 1, an operation tube 2, a front end tube part 21, a fixing frame 21a, a magnetic matching part 22, an upper magnetic arc plate 22a, a connecting arc plate 22b, a lower magnetic arc plate 22c, a bending connecting part 23, an upper flexible part 23a, a middle elastic connecting part 23b, a lower flexible part 23c, a spring wire 23d, an iron core tube part 24, a coil 24a, a limiting frame 24b, a rear end tube part 25, a bending operator 3, an operation shell 31, a through groove 31a, a sliding seat 32, a sliding groove 32a, a sliding block 33, a sliding body 33a, a conductive block 33b, a battery 34, a switch 35, a docking center 4, a high-frequency current docking head 41, an ocular lens 42, an argon gas charging connector 43, an illuminating optical fiber connector cone 44, a compensator 45, a positive electrode tube 5, a high-frequency current lead 51, an electrode tip 52, a lead sheath 53, a camera head structure 6, an illuminating optical fiber 61, an.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

The minimally invasive surgical instrument for bladder polyps of the present embodiment, wherein: comprises an outer sleeve 1, an operating tube 2, a bending operator 3 and a docking hub 4, wherein the outer sleeve 1 is a hollow tube, the diameter of the hollow tube is adapted to the width of the urethra and can be inserted into the bladder from the urethra, the front end of the operating tube 2 can be inserted into the inner cavity of the outer sleeve 1 and can slide in the inner cavity of the outer sleeve 1, an axial cavity is arranged in the operating tube 2, a positive electrode tube 5 and a camera structure 6 are arranged in the operating tube 2, the operating tube 2 is formed by sequentially connecting a front-end tube part 21, a magnetic matching part 22, a bending connecting part 23, an iron core tube part 24 and a rear-end tube part 25 in sequence, the front-end tube part 21 and the rear-end tube part 25 are made of plastic or glass materials, the magnetic matching part 22 is formed by fixedly embracing an upper magnetic arc plate 22a, a connecting arc plate 22b and a lower magnetic arc plate 22c, the upper magnetic arc plate 22a is positioned at the upper part, the lower magnetic arc plate 22c is positioned at the lower part, the connecting, the magnetic poles of the upper magnetic arc plate 22a and the lower magnetic arc plate 22c are at the front end and the rear end, the magnetic poles of the upper magnetic arc plate 22a and the lower magnetic arc plate 22c are opposite in direction, the bending connection part 23 comprises an upper flexible part 23a, a middle flexible part 23b and a lower flexible part 23c, the front-rear length of the upper flexible part 23a is greater than the front-rear length of the lower flexible part 23c, the middle flexible part 23b is made of non-conductive elastic material and is used for connecting the upper flexible part 23a and the lower flexible part 23c, the upper flexible part 23a and the lower flexible part 23c can be folded and compressed, a front-rear spring wire 23d is arranged in the lower flexible part 23c, the elastic coefficient of the spring wire 23d is greater than that of the upper flexible part 23a and the lower flexible part 23c, the iron core tube part 24 penetrates through the bending manipulator 3, a coil 24a is wound outside the part of the iron core tube part 24 in the bending manipulator 3, the bending manipulator 3, A slide conductive plate 32, a slide block 33 and a battery 34, wherein the operating shell 31 is fixed on the iron core tube part 24, the operating shell 31 is provided with a through slot 31a, the slide block 33 comprises a slide body 33a and a conductive block 33b, the slide body 33a is installed on the outer side of the operating shell 31, the conductive block 33b is positioned on the inner side of the operating shell 31, the slide body 33a penetrates through the through slot 31a and the conductive block 33b to be connected together, the slide conductive plate 32 is fixed on the inner side of the operating shell 31, the slide conductive plate 32 is provided with a slide slot 32a, the main body part of the conductive block 33b is clamped in the slide slot 32a and can slide back and forth in the slide slot 32a, the lower end of the conductive block 33b is contacted with the coil 24a, one end of the coil 24a is connected with one pole of the battery 34, the slide conductive plate 32 is connected with the other pole of the battery, The slide seat conductive plate 32 and the battery 34 form a loop, when the coil 24a is electrified, the iron core tube part 24 can be magnetized, the front end magnetic pole of the iron core tube part 24 is repelled from the upper magnetic arc plate 22a and attracted to the lower magnetic arc plate 22c, the rear end of the rear end tube part 25 is connected to the docking hub 4, the docking hub 4 is internally provided with a high-frequency current docking head 41, an ocular lens 42, an argon gas charging head 43, an illuminating optical fiber connector cone 44 and a compensator 45, the positive electrode tube 5 comprises a high-frequency current lead 51, an electrode tip 52 and a lead sheath 53, the front end of the high-frequency current lead 51 is connected to the electrode tip 52, the rear end of the high-frequency current lead 51 passes through the compensator 45 and is connected to the high-frequency current docking head 41, the electrode tip 52 partially extends out of the front end tube part 21, the lead sheath 53 is wrapped outside the high-frequency current lead 51 and, An image transmission optical fiber 62 and a camera 63, the front end of the image transmission optical fiber 62 is connected with the camera 63, the rear end of the image transmission optical fiber passes through the compensator 45 and then is butted with the ocular lens 42, the camera 63 is arranged at the front part of the inner cavity of the front end pipe part 21 and is used for shooting the visual field at the electrode tip 52, the front end of the illumination optical fiber 61 is fixed at the side surface of the camera 63, the rear end of the illumination optical fiber passes through the compensator 45 and then is butted with the illumination optical fiber joint cone 44, the illumination optical fiber 61 is used for providing illumination to the front part of the camera 63, the axial cavity in the operation pipe 2 is an air guide channel, the rear end of the rear end pipe part 25 is butted with the argon gas charging joint 43 after being connected with the docking center 4, the argon gas charging joint 43 can be used for injecting argon gas into the air guide channel, so that the argon gas can be used for filling the space in front of the electrode tip 52, the compensator 45, The high-frequency current lead 51 and the lead sheath 53 simultaneously pass through the rear end of the rear-end tube part 25 and the compensator 45, and the illumination optical fiber 61, the image transmission optical fiber 62, the high-frequency current lead 51 and the lead sheath 53 in the compensator 45 have folded bends, so that when the illumination optical fiber 61, the image transmission optical fiber 62, the high-frequency current lead 51 and the lead sheath 53 in the front part of the operation tube 2 are extended forwards, the folded bends in the compensator 45 can be correspondingly unfolded, and the lengths of the illumination optical fiber 61, the image transmission optical fiber 62, the high-frequency current lead 51 and the lead sheath 53 in the operation tube 2 are compensated.

In the embodiment, the rear end of the magnetic fitting portion 22 is inclined in a direction of being short in the upper direction and long in the lower direction, so that the installation space of the upper flexible portion 23a is larger than that of the lower flexible portion 23 c.

In the embodiment, the upper flexible portion 23a and the lower flexible portion 23c are made of silicone.

In the embodiment, a fixing frame 21a is disposed inside the front-end tube 21, the fixing frame 21a is a hollow frame having a front-rear through hole, the fixing frame 21a is fixedly connected to the inner surface of the front-end tube 21, and the fixing frame 21a is fixedly connected to the front portions of the illumination fibers 61, the image transmission fibers 62, and the wire sheath 53.

In the embodiment, the inner side of the core tube 24 is provided with a limiting frame 24b, the limiting frame 24b is a hollow frame with a front through hole and a rear through hole, the limiting frame 24b is fixedly connected with the inner side surface of the core tube 24, and the lighting fibers 61, the image transmission fibers 62 and the wire sheath 53 pass through the limiting frame 24b and can slide relative to the limiting frame 24 b.

In the embodiment, the operation housing 31 is provided with a scale for indicating the contact position of the conductive piece 33b with the coil 24 a.

In the embodiment, the high-frequency current butt joint 41 can be connected with an external high-frequency power supply, the ocular lens 42 can be connected with an external display device, the argon gas inflation joint 43 can be connected with an external argon gas source, and the lighting optical fiber joint cone 44 can be connected with an external light source.

In the embodiment, the camera 63 is a CCD camera.

In the embodiment, an eyepiece protective cover for protecting the eyepiece 42 is provided outside the eyepiece 42.

When the minimally invasive surgical instrument for bladder polyp is adopted, a negative plate is padded at the waist of a patient, the negative plate is grounded, a high-frequency current butt joint 41 is connected with an external high-frequency power supply on a butt joint center 4 according to requirements, an ocular lens 42 is connected with an external display device, an argon gas charging joint 43 is connected with an external argon gas source, and an illuminating optical fiber joint cone 44 is connected with an external light source. The operation tube 2 is arranged in the outer sleeve 1, the outer sleeve 1 is inserted into the bladder along the urethra of the patient, the state is shown in figure 1, then the outer sleeve 1 is withdrawn backwards, the outer sleeve is retracted into the urethra, urine can flow out from the small gap between the outer sleeve 1 and the operation tube 2, and no urine remains in the bladder. Checking the shape of the inner wall of the bladder by a display device, closing a switch 35 to electrify a coil 24a, after the iron core tube part 24 is electrified, repelling an upper magnetic arc plate 22a, adsorbing a lower magnetic arc plate 22c, bending the front end of the operating tube 2, and changing the number of turns of the electrified coil 24a by a sliding slide block 33 as shown in figure 10, thereby changing the magnetic force of the iron core tube part 24 on the upper magnetic arc plate 22 and the lower magnetic arc plate 22c, thereby changing the bending of the front end of the operating tube 2, using the bending of the operating tube 2, matching with the manual rotation of the operating tube 2, observing the shapes of the upper part and the lower part of the bladder at 360 degrees, finding the position of the polypus of the bladder, enabling the front end of the operating tube 2 to be close to the polyp, enabling the bent operating tube 2 to be closer to the polyp on the lower part of the bladder than a straight tube, then injecting argon into a gas guide channel by an argon, the high-frequency current is started, and the polyp at the front end of the operation tube 2 is cut through the positive electrode tube 5, and hemostasis is performed.

After the operation is finished, the switch 35 is closed, the upper magnetic arc plate 22a and the lower magnetic arc plate 22c both have the tendency of adsorbing the iron core tube part 24, so that the front end of the operation tube 2 is nearly straight, the outer sleeve 1 is pushed forward to enable the outer sleeve 1 to enter the bladder, the operation tube 2 retracts into the outer sleeve 1, and the state of the device returns to the state shown in fig. 1; the outer sleeve 1 and the operation tube 2 are withdrawn from the urethra of the patient together, and the operation is finished.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.

Claims

1. Minimally invasive surgical instruments for bladder polyps are characterized in that: the multifunctional operating tube comprises an outer sleeve (1), an operating tube (2), a bending manipulator (3) and a butt joint center (4), wherein the outer sleeve (1) is a hollow tube, the diameter of the outer sleeve is adaptive to the width of the urethra and can be inserted into the bladder from the urethra, the front end of the operating tube (2) can be inserted into the inner cavity of the outer sleeve (1) and can slide in the inner cavity of the outer sleeve (1), an axial cavity is arranged in the operating tube (2), a positive electrode tube (5) and a camera structure (6) are arranged in the operating tube (2), the operating tube (2) is formed by sequentially connecting a front end tube part (21), a magnetic matching part (22), a bending connecting part (23), an iron core tube part (24) and a rear end tube part (25) in front and rear, the front end tube part (21) and the rear end tube part (25) are made of plastic or glass materials, and the magnetic matching part (22) is formed by an upper magnetic arc plate (22a), The connecting arc plate (22b) and the lower arc plate (22c) are fixedly encircled, the upper arc plate (22a) is positioned at the upper part, the lower arc plate (22c) is positioned at the lower part, the upper arc plate (22a) and the lower arc plate (22c) are fixed together by the connecting arc plate (22b), the magnetic poles of the upper arc plate (22a) and the lower arc plate (22c) are arranged at the front end and the rear end, the directions of the magnetic poles of the upper arc plate (22a) and the lower arc plate (22c) are opposite, the bending connecting part (23) comprises an upper flexible part (23a), a middle flexible connecting part (23b) and a lower flexible part (23c), the front-rear length of the upper flexible part (23a) is greater than the front-rear length of the lower flexible part (23c), the middle flexible connecting part (23b) is made of a non-conductive elastic material and is used for connecting the upper flexible part (23a) and the lower flexible part (23c), the upper flexible part (23a) and the lower flexible part (23c) can be folded and compressed, a spring wire (23d) moving forwards and backwards is arranged in the lower flexible part (23c), the elastic coefficient of the spring wire (23d) is larger than that of the upper flexible part (23a) and the lower flexible part (23c), the iron core pipe part (24) penetrates through the bending manipulator (3), a coil (24a) is wound on the outer side of the part, located in the bending manipulator (3), of the iron core pipe part (24), the bending manipulator (3) comprises a manipulation shell (31), a sliding seat conductive plate (32), a sliding block (33) and a battery (34), the manipulation shell (31) is fixed on the iron core pipe part (24), a through groove (31a) is arranged on the manipulation shell (31), the sliding block (33) comprises a sliding body (33a) and a conductive block (33b), and the sliding body (33a) is installed on the outer side of the manipulation shell (31), the conducting block (33b) is positioned on the inner side of the operating shell (31), the sliding body (33a) penetrates through the through groove (31a) and the conducting block (33b) to be connected together, the sliding seat conducting plate (32) is fixed on the inner side of the operating shell (31), the sliding seat conducting plate (32) is provided with a sliding groove (32a), the main body part of the conducting block (33b) is clamped in the sliding groove (32a) and can slide back and forth in the sliding groove (32a), the lower end of the conducting block (33b) is contacted with the coil (24a), one end of the coil (24a) is connected with one pole of the battery (34), the sliding seat conducting plate (32) is connected with the other pole of the battery (34), a switch (35) is installed on a connecting line of the sliding seat conducting plate (32) and the battery (34), the coil (24a), the conducting block (33b), the sliding seat conducting plate (32) and the battery (34) form a loop, when the coil (24a) is electrified, the iron core tube part (24) can be magnetized, so that a front end magnetic pole of the iron core tube part (24) is repelled with the upper magnetic arc plate (22a) and attracted with the lower magnetic arc plate (22c), the rear end of the rear end tube part (25) is connected into the docking center (4), the docking center (4) is internally provided with a high-frequency current docking head (41), an eyepiece (42), an argon gas inflation head (43), an illumination optical fiber connector cone (44) and a compensator (45), the positive electrode tube (5) comprises a high-frequency current lead (51), an electrode end (52) and a lead sheath (53), the front end of the high-frequency current lead (51) is connected with the electrode end (52), the rear end of the high-frequency current lead passes through the compensator (45) and then is connected with the high-frequency current docking head (41), and the electrode end (52) partially extends out of the front end tube part (21), the wire sheath (53) parcel outside high frequency current wire (51) for protect high frequency current wire (51), camera structure (6) including illumination optic fibre (61), pass like optic fibre (62) and camera (63), pass like optic fibre (62) front end and camera (63) be connected, the rear end passes behind compensator (45), with eyepiece (42) butt joint, camera (63) install the front portion in front end pipe portion (21) tube cavity for shoot electrode tip (52) department field of vision, illumination optic fibre (61) front end fixed in camera (63) side, the rear end passes behind compensator (45), with illumination optic fibre joint cone (44) butt joint, illumination optic fibre (61) be used for providing the illumination to camera (63) the place ahead, the axial cavity in handle pipe (2) be the air guide passageway, the rear end of the rear end pipe part (25) is connected with the butt joint center (4) and then is in butt joint with the argon gas inflation joint (43), the argon gas inflation joint (43) can inject argon gas into the gas guide channel, so that the argon gas can fill the space in front of the electrode tip (52), the compensator (45) is a closed square container, one side wall of the compensator (45) seals the rear end of the rear end pipe part (25), the illuminating optical fiber (61), the image transmission optical fiber (62), the high-frequency current lead (51) and the lead sheath (53) simultaneously penetrate through the rear end of the rear end pipe part (25) and the compensator (45), and the illuminating optical fiber (61), the image transmission optical fiber (62), the high-frequency current lead (51) and the lead sheath (53) are positioned in the compensator (45) and are folded and bent, so that the illuminating optical fiber (61), the image transmission optical fiber (62), the high-frequency current lead (51) and the lead sheath (53) positioned in the front part of the operation pipe (2), the folded and bent portion in the compensator (45) can be unfolded correspondingly to compensate the length of the lighting optical fiber (61), the image transmission optical fiber (62), the high-frequency current lead (51) and the lead sheath (53) in the operating tube (2).

2. The minimally invasive surgical instrument of bladder polyps according to claim 1, characterized in that: the rear end of the magnetic matching part (22) is inclined, and the inclined direction is short in the upper part and long in the lower part, so that the installation space of the upper flexible part (23a) is larger than that of the lower flexible part (23 c).

3. The minimally invasive surgical instrument of bladder polyps according to claim 2, characterized in that: the upper flexible part (23a) and the lower flexible part (23c) are made of silica gel.

4. The minimally invasive surgical instrument of bladder polyps according to claim 3, characterized in that: the inner side of the front end pipe part (21) is provided with a fixing frame (21a), the fixing frame (21a) is a hollow frame with a front through hole and a rear through hole, the fixing frame (21a) is fixedly connected with the inner side surface of the front end pipe part (21), and the fixing frame (21a) is fixedly connected with the front parts of the lighting optical fiber (61), the image transmission optical fiber (62) and the lead sheath (53).

5. The minimally invasive surgical instrument of bladder polyps according to claim 4, characterized in that: the iron core tube part is characterized in that a limiting frame (24b) is arranged on the inner side of the iron core tube part (24), the limiting frame (24b) is a hollow frame with a front through hole and a rear through hole, the limiting frame (24b) is fixedly connected with the inner side face of the iron core tube part (24), and the lighting optical fiber (61), the image transmission optical fiber (62) and the lead sheath (53) penetrate through the limiting frame (24b) and can slide relative to the limiting frame (24 b).

6. The minimally invasive surgical instrument of bladder polyps according to claim 5, characterized in that: the operation shell (31) is provided with scales for indicating the contact position of the conductive block (33b) and the coil (24 a).

7. The minimally invasive surgical instrument of bladder polyps according to claim 6, characterized in that: the high-frequency current butt joint (41) can be connected with an external high-frequency power supply, the eyepiece (42) can be connected with an external display device, the argon gas inflation joint (43) can be connected with an external argon gas source, and the lighting optical fiber joint cone (44) can be connected with an external light source.

8. The minimally invasive surgical instrument of bladder polyps according to claim 7, characterized in that: the camera (63) is a CCD camera.

9. The minimally invasive surgical instrument of bladder polyps according to claim 8, characterized in that: an eyepiece protective cover used for protecting the eyepiece (42) is arranged outside the eyepiece (42).