CN115844494A - Minimally invasive operation device for bladder polyp - Google Patents

Abstract

The invention provides a minimally invasive surgery device for bladder polyps, which includes an extension rod mechanism, a forceps body, a mounting box and an operating mechanism. The forceps body of the present invention is provided with a rotatable turret, which can adjust the relative position of the clamping jaws. The inclination angle of the rod body can be adjusted according to the needs when performing surgery in a small space such as the bladder, which is more convenient to use. The other two clamping clamps can be controlled independently, and each clamping clamp can be independently controlled. The operation of opening and clamping can meet a variety of needs in the operation. In addition, in the present invention, the box body and the rod body with the operating mechanism installed inside are in a linear structure, which takes up less space during use and can be done with one hand. It realizes operations such as opening, clamping, and angle adjustment of the clamp body by adjusting and clamping the clamps, and is very suitable for operations such as clamping and resecting polyps in minimally invasive surgery for bladder polyps.

Description

A minimally invasive surgery device for bladder polyps

technical field

The invention relates to the technical field of medical devices, in particular to a minimally invasive surgery device for bladder polyps.

Background technique

Minimally invasive surgery is a surgical technique that minimizes the surgical incision by inserting surgical tools into the patient's body through at least one small incision. During the recovery period of the patient, minimally invasive surgery can reduce the pain of the patient and at the same time reduce the scar left by the patient after the operation. Bladder polyps are a kind of excess tumor that grows on the bladder mucosa. When polyps fester and bleed Frequent urination, urgency, pain, and hematuria will result in frequent urination. At present, minimally invasive surgery is mainly used to remove bladder polyps. For minimally invasive surgery of bladder polyps, medical high-frequency electric knife is usually used to remove them first, and then use forceps to remove them. of polyps.

A minimally invasive surgical forceps provided by the publication number CN204520875U, which drives the upper clamp and the lower clamp to close through the handle of the holding type, to perform the clamping operation in the operation, and a minimally invasive surgery provided by the publication number CN206792454U The instrument also adopts this kind of grip-type operating handle. When the operating handle is used, it needs to be operated by holding the handle with the hand. The above-mentioned minimally invasive surgery clips are generally suitable for minimally invasive surgery of the abdominal cavity. During the operation, because the operating space inside the bladder is relatively narrow compared with the space inside the abdominal cavity, the angle of the head of the existing clamping device cannot be adjusted, so it is very inconvenient to operate in the bladder. The other two clamps It cannot be controlled separately. When grasping, only two clamps can be controlled to move at the same time, which affects the operation of the operation. In addition, this grip structure requires a large holding space at the bottom. , it needs to be used at an incline, which affects the efficiency of the operation.

Contents of the invention

The object of the present invention is to provide a minimally invasive surgery device for bladder polyps to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A minimally invasive surgery device for bladder polyps, comprising:

Extension rod mechanism, the extension rod mechanism includes a rod body with a hollow deflection adjustment hole inside, and operation holes are arranged on both sides of the deflection adjustment hole, the front end of the rod body is connected with the clamp body, the rear end is connected with the installation box, the deflection adjustment hole, the operation hole and The installation box is internally connected;

The pliers body includes a circular turret and a U-shaped support frame. The front end of the turret is fixed with a support frame, and the first winding wheel and the second winding wheel are fixed in the support frame through the rotation of the second longitudinal shaft. wheel, the first winding wheel and the second winding wheel are set up and down, and the outer sides are fixed with clamping clamps;

The installation box, the installation box includes an inner hollow box body, an operating mechanism is installed inside the box body, hollowed out movement slots are provided on both sides of the box body, and hollowed out operation slots are provided on the upper end surface;

An operating mechanism, the operating mechanism includes two sets of clamping operating mechanisms and one set of deflecting operating mechanisms arranged symmetrically along the axis of the box body;

The clamping operation mechanism includes a first installation shaft, a rotating wheel and a rotating gear. The rotating gear is fixed on the bottom of the rotating wheel. The rotating wheel and the rotating gear are rotatably installed on the first installation shaft. An operating handle is fixed on the outside, and the teeth of the rotating gear mesh with the teeth of the tooth plate, and the operating handle extends through the movement groove to the outside of the box body;

The deflection operating mechanism includes a second installation shaft, the second installation shaft is rotatably installed inside the box body, a dial wheel and a deflection wheel are fixed on the second installation shaft, and the dial wheel passes through the operation slot and extends to Outside the box;

The front end of the rod body is provided with a longitudinal rotating groove, and a first rotating shaft perpendicular to the direction of the second rotating shaft is fixed in the rotating groove, and the turret is arranged in the rotating groove, and is rotatably mounted on the first rotating shaft;

There is an annular deflection steel wire in the deflection adjustment hole. The front end of the deflection steel wire is set on the turret, and the rear end extends to the inside of the box body to be set on the deflection wheel. There is an annular operation steel wire in the two operation holes. The front ends of the two operating steel wires go through the support frame and are set on the first winding wheel and the second winding wheel, and the rear ends extend to the inside of the box body and are respectively set on the two rotating wheels. The deflection steel wire and the operating steel wire are both in tension. tight state.

In one of the embodiments, the first winding wheel, the second winding wheel and the rotating wheel are provided with operation grooves for accommodating the operation steel wires, and the turret and deflection wheels are provided with grooves for accommodating the deflection steel wires. deflection groove.

In one of the embodiments, a separation pad is provided between the first winding wheel and the second winding wheel, and the separation pad is sleeved on the second rotating shaft, and the clamping jaws connected to the first winding wheel It is arranged symmetrically with the clamping jaws connected to the second reel.

In one of the embodiments, the first rotating shaft is provided with two wire passing holes, the positions of the two wire passing holes correspond to the positions of the two operation holes, and the two operating steel wires pass through the two wire passing holes respectively. hole.

In one of the embodiments, the inside of the box body is also fixed with a guide bracket, the guide bracket is located between the deflection wheel and the outlet of the deflection adjustment hole at the rear end, the inside of the guide bracket is provided with two layers of guide wheels, and the two deflection steel wires The steel wires pass through the bottoms of the two guide wheels in turn and then are sheathed on the deflection wheels. The guide wheels are provided with deflection grooves for accommodating the deflection steel wires.

In one of the embodiments, four deflection brackets are fixed inside the box body, and every two deflection brackets form a group, and the two groups are arranged symmetrically. The deflection runners are installed on the deflection brackets, and each operation steel The two steel wires of the line pass through two deflection runners on a set of deflection brackets and then are sleeved on the running wheels. The deflection runners are provided with operation grooves for accommodating the operation steel wires.

In one of the embodiments, the toothed plate is slidably sleeved on the sliding rod, and the sliding rod moves along the direction of the toothed plate. A return spring is sheathed on the sliding rod, and one end of the return spring is against the side wall of the tooth plate, and the other end is against the side wall of the fixed bracket.

In one of the embodiments, a slider is fixed on the bottom of the tooth plate, and a sliding groove is fixed on the inner bottom of the box at the bottom of the tooth plate, and the slider is slidably installed in the sliding groove.

In one of the embodiments, the installation box further includes a load-bearing frame, the load-bearing frame is arc-shaped, and is fixed on the inner side wall of the box body away from the rod body.

Compared with prior art, the beneficial effect of the present invention is:

The clamp body of the present invention is provided with a rotatable turret, which can adjust the inclination angle of the clamping clamp relative to the rod body, and can adjust the angle according to the demand when performing surgery in a small space such as the bladder, and is more convenient to use. The other two clamping clamps can be controlled independently, and each clamping clamp can be independently opened and clamped, which can meet various needs in the operation. In addition, an operating mechanism is installed inside the present invention The box body and the rod body are in a linear structure, which takes up less space during use, and can be adjusted and clamped with one hand to open, clamp, and adjust the angle of the clamp body, which is very suitable for bladder In the minimally invasive surgery of polyps, operations such as clipping of excised polyps are performed.

Description of drawings

Fig. 1 is a schematic diagram of the overall decomposition structure of the present invention;

Fig. 2 is the cross-sectional structure schematic diagram of rod body in the present invention;

Fig. 3 is the schematic diagram of the disassembled structure of the pliers body in the present invention;

Fig. 4 is the structural representation of pliers body in the present invention;

Fig. 5 is the structural representation of operating mechanism among the present invention;

Fig. 6 is a schematic diagram of the installation structure of the tooth plate in the present invention;

Fig. 7 is a schematic diagram of the installation structure of the guide bracket in the present invention;

Fig. 8 is a schematic diagram of the overall external structure of the installation box in the present invention.

In the figure: 100 extension rod mechanism, 110 rod body, 111 deflection adjustment hole, 112 operation hole, 113 rotation slot, 120 deflection steel wire, 130 operation steel wire, 200 clamp body, 210 turret, 220 support frame, 230 second rotating shaft , 240 first winding wheel, 250 second winding wheel, 260 clamping clamp, 270 separation pad, 280 first rotating shaft, 281 wire hole, 300 installation box, 310 box body, 311 movement slot, 312 operation slot , 320 bearing frame, 400 operating mechanism, 410 clamping operating mechanism, 411 first installation shaft, 412 rotating wheel, 413 rotating gear, 414 gear plate, 415 operating handle, 416 biasing bracket, 417 biasing wheel, 418 sliding rod , 419 return spring, 420 deflection operating mechanism, 421 second installation shaft, 422 dial wheel, 423 deflection wheel, 424 guide bracket, 425 guide wheel.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example:

Referring to Fig. 1 to Fig. 8, the present invention provides a technical solution:

A minimally invasive surgery device for bladder polyps, comprising an extension rod mechanism 100, a forceps body 200, an installation box 300 and an operating mechanism 400, wherein:

The extension rod mechanism 100 includes a rod body 110 with a hollow deflection adjustment hole 111 inside. Operation holes 112 are arranged on both sides of the deflection adjustment hole 111. The front end of the rod body 110 is connected with the caliper body 200, and the rear end is connected with the installation box 300. 111. The operation hole 112 communicates with the inside of the installation box 300. An annular deflection steel wire 120 is arranged in the deflection adjustment hole 111. An annular operation steel wire 130 is arranged in the two operation holes 112. The annular deflection steel wire 120 and the operation The front end and the rear end of the steel wire 130 are ring-shaped, placed in the corresponding deflection adjustment hole 111 and operation hole 112 in double strands, and the deflection adjustment hole 111 and the two operation holes 112 are mutually isolated, which can Effectively prevent the operation steel wire 13 and the deflection steel wire 120 from being entangled together, affecting the operation.

The pliers body 200 includes a circular turret 210 and a U-shaped support frame 220. The front end of the turret 210 is fixed with a support frame 220, and a first winding wheel 240 is fixed in the support frame 220 through the rotation of the second vertical shaft 230. And the second reel 250, the first reel 240 and the second reel 250 are set up and down, and the outer sides are fixed with clamping clamps 260, the first reel 240 is located at the upper end of the second reel 250 , the first winding wheel 240 and the second winding wheel 250 can rotate around the second rotating shaft 230 .

Further, a separation pad 270 is provided between the first winding wheel 240 and the second winding wheel 250, and the separation pad 270 is sleeved on the second rotating shaft 230. The separation pad 270 allows the first winding wheel 240 and the second winding wheel The winding wheel 250 will not interfere with each other when rotating around the second rotating shaft 230, and the clamping jaws 260 connected to the first winding wheel 240 and the holding jaws 260 connected to the second winding wheel 250 are symmetrical set, and the front ends of the two clamping jaws 260 are at the same level, which is convenient for clamping. When the first winding wheel 240 and the second winding wheel 250 rotate, they drive the corresponding clamping jaws 260 to rotate, realizing two The opening and closing of a clamping jaw 260.

The front end of the rod body 110 is provided with a longitudinal rotating groove 113, and a first rotating shaft 280 perpendicular to the direction of the second rotating shaft 230 is fixed in the rotating groove 113. Above, the turret 210 can rotate around the first rotating shaft 280, and the direction of rotation is perpendicular to the direction of opening and clamping of the clamping jaws 260, and the inclination angle of the clamping jaws 260 relative to the rod body 110 can be adjusted. When performing surgery in a small space such as the bladder, the angle can be adjusted according to the needs, which is more convenient to use.

Further, the first rotating shaft 280 is provided with two wire passing holes 281, the positions of the two wire passing holes 281 correspond to the positions of the two operating holes 112, and the two operating steel wires 130 pass through the two passing wires respectively. Wire hole 281.

The installation box 300 includes a box body 310 with a hollow inside. An operating mechanism 400 is installed inside the box body 310 . Hollowed-out movement slots 311 are provided on both sides of the box body 310 , and hollowed-out operation slots 312 are provided on the upper end surface.

Further, the installation box 300 also includes a load-bearing frame 320, which is arc-shaped and fixed on the inner side wall of the box body 310 away from the rod body 110. The arc-shaped load-bearing frame 320 can be supported during operation. The palm of the user is convenient to hold the installation box 300 for operation.

The operating mechanism 400 includes two sets of clamping operating mechanisms 410 and a set of deflection operating mechanisms 420 symmetrically arranged along the axis of the box body 310. The two sets of clamping operating mechanisms 410 respectively control the first reel 240 and the second reel 240. The reel 250 enables separate control of the two clamping jaws 260 .

The clamping operation mechanism 410 includes a first installation shaft 411, a rotating wheel 412 and a rotating gear 413, the bottom of the rotating wheel 412 is fixed with a rotating gear 413, and the rotating wheel 412 and the rotating gear 413 are rotatably mounted on the first installation shaft 411. The wheel 412 and the rotating gear 413 can rotate around the first installation shaft 411 synchronously, the outer side of the rotating gear 413 is provided with a tooth plate 414, the outer side of the tooth plate 414 is fixed with an operating handle 415, the teeth of the rotating gear 413 and the teeth of the tooth plate 414 Mesh connection, the operating handle 415 extends to the outside of the box body 310 through the movement groove, and the operating handle 415 drives the tooth plate 414 to move back and forth, which can drive the rotating wheel 412 and the rotating gear 413 to rotate around the first installation shaft 411 .

Further, the tooth plate 414 is slidingly sleeved on the sliding rod 418, and the sliding rod 418 moves along the direction of the tooth plate, and the two ends of the sliding rod 418 are installed on the inside of the box body 310 through a fixed bracket. The sliding rods at both ends are covered with return springs 419. One end of the return spring 419 is against the side wall of the tooth plate 414, and the other end is against the side wall of the fixed bracket. When the operating handle 415 is pushed forward and backward, it will drive the tooth plate 414 along the The sliding rod 418 slides, thereby pressing or stretching the return spring 419 to generate elastic force, when the operating handle 415 is not pushed, the elastic force is released, and the operating handle 415 can be quickly reset.

Further, the bottom of the tooth plate 414 is fixed with a slider, and the inner bottom of the box body 310 at the bottom of the tooth plate 414 is fixed with a chute, and the slider is slidably installed in the chute. The block slides inside the chute, and the cooperation between the slide block and the chute allows the tooth plate 414 to only move forward and backward, without operations such as rotation, making it move more smoothly.

The front ends of the two operating steel wires 130 pass through the support frame 220 and are placed on the first winding wheel 240 and the second winding wheel 250, and the rear ends extend to the inside of the box body 310 and are respectively placed on the two rotating wheels 412 to operate the steel wires. 130 is in a tense state. After the tooth plate 414 is pushed forward and backward by the operating handle 415, it can drive the rotating wheel 412 to rotate. The winding wheel 250 rotates to realize the opening and closing of the clamping jaws 260, and the two clamping jaws 260 are controlled by pushing forward and backward of the two operating handles 415 respectively, so that each clamping jaw 260 can The separate opening and clipping operations can meet various needs in the operation.

Further, the first winding wheel 240, the second winding wheel 250 and the rotating wheel 412 are provided with operation grooves for accommodating the operating steel wire 130, so that the operating steel wire 130 can be firmly stuck on the first winding wheel 240, the second reel 250 and the running wheel 412, will not fall.

Further, four deflection brackets 416 are fixed inside the box body 310, every two deflection brackets 416 are set as a group, and the two groups are arranged symmetrically, and a deflection wheel 417 is mounted on the deflection bracket 416, and each operation Two steel wires of the steel wire 130 pass through two deflection runners 417 on a group of deflection brackets 416 and are placed on the running wheel 412. The two steel wires that connect the operation steel wire 130 of the rotating wheel 412 can be separated, thereby preventing entanglement and allowing the operation steel wire 130 to move more smoothly. The wire 130 can be firmly clamped and prevented from falling.

The deflection operating mechanism 420 includes a second installation shaft 421, the second installation shaft 421 is rotatably installed inside the box body 310, the second installation shaft 421 can rotate freely, and a dial is fixed on the second installation shaft 421 The wheel 422 and the deflection wheel 423 , the deflection wheel 422 passes through the operation groove 312 and extends to the outside of the box body 310 , when the dial wheel 422 is rotated from the outside, the second installation shaft 421 can drive the deflection wheel 423 to rotate.

The front end of the deflection steel wire 120 is set on the turret 210, and the rear end extends to the inside of the box body 310 and is set on the deflection wheel 423. The deflection steel wire 120 is in a tight state. When the dial wheel 422 is turned, the deflection wheel 423 is driven to rotate. , the deflection steel wire 120 is driven to move under the action of friction, thereby driving the turret 210 to rotate around the first rotating shaft 280 , and adjusting the inclination angle of the clamping jaw 260 relative to the rod body 110 .

Further, the turret 210 and the deflection wheel 423 are provided with deflection grooves for accommodating the deflection steel wire 120, so that the deflection steel wire 120 can be firmly stuck on the turret 210 and the deflection wheel 423, effectively avoiding falling.

Further, the inside of the box body 310 is also fixed with a guide bracket 424, the guide bracket 424 is located between the deflection wheel 423 and the outlet of the deflection adjustment hole 111 at the rear end, the inside of the guide bracket 424 is provided with two layers of guide wheels 425, the guide wheels 425 Can rotate freely, the two steel wires of the deflection steel wire 120 pass through the bottom of the two guide wheels 425 successively and then are placed on the deflection wheel 423, the guide wheel 425 can make the two steel wires of the deflection steel wire 120 connected to the deflection wheel 423 The wires are separated to prevent entanglement and allow the deflection steel wire 120 to move more smoothly. The guide wheel 425 is provided with a deflection groove for accommodating the deflection steel wire 120 to effectively prevent the deflection steel wire 120 from falling from the guide wheel 425.

The principle of use of the present invention: when in use, the forceps body 200 is penetrated into the bladder through the micro-trauma, the load-bearing frame 320 is placed on the palm of the hand, the thumb is placed on the dial wheel 422, and the other two fingers are buckled on the bladder respectively. On the two operating handles 415;

When it is necessary to adjust the angle of inclination of the clamping jaw 260, use the thumb to move the dial wheel 422 back and forth to rotate, then the angle of inclination of the clamping jaw 260 can be adjusted. When the clamping jaw 260 needs to be clamped and When opening, use fingers to push the operating handle 415 back and forth to move back and forth, so that each clamping jaw 260 can be opened and clamped independently, which can meet various needs in the operation;

Since the box body 310 and the rod body 110 with the operating mechanism 400 are installed in a linear structure, the space occupied during use is small, and the opening, clamping and clamping of the clamping jaw 260 can be realized with one hand. Angle adjustment and other operations.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (9)

1. A minimally invasive surgery device for bladder polyps, characterized in that it comprises: The extension rod mechanism (100), the extension rod mechanism (100) includes a rod body (110) with a hollow deflection adjustment hole (111) inside, and operation holes (112) are arranged on both sides of the deflection adjustment hole (111), and the rod body (110 ) the front end is connected to the caliper body (200), the rear end is connected to the installation box (300), and the deflection adjustment hole (111), the operation hole (112) communicates with the inside of the installation box (300); The pliers body (200), the pliers body (200) comprises a circular turret (210) and a U-shaped support frame (220), the turret (210) front end is fixed with a support frame (220), and the support frame (220 ) is fixed with the first reel (240) and the second reel (250) by the rotation of the second longitudinal shaft (230), the first reel (240) and the second reel (250) up and down set, and the outer sides are fixed with clamping clamps (260); The installation box (300), the installation box (300) includes a box body (310) with a hollow inside, the inside of the box body (310) is equipped with an operating mechanism (400), and the two sides of the box body (310) are provided with hollowed out movement grooves (311), the upper end surface is provided with a hollowed-out operation groove (312); An operating mechanism (400), the operating mechanism (400) comprising two sets of clamping operating mechanisms (410) and a set of deflection operating mechanisms (420) arranged symmetrically along the axis of the box body (310); Described clamping operating mechanism (410) comprises first installation shaft (411), rotating wheel (412) and rotating gear (413), and rotating wheel (412) bottom is fixed with rotating gear (413), rotating wheel (412) and The rotating gear (413) is rotatably installed on the first mounting shaft (411), the outer side of the rotating gear (413) is provided with a tooth plate (414), the outer side of the tooth plate (414) is fixed with an operating handle (415), and the rotating gear (413) The teeth of the teeth and the teeth of the tooth plate (414) are engaged and connected, and the operating handle (415) passes through the movement groove and extends to the outside of the box body (310); The deflection operating mechanism (420) includes a second installation shaft (421), the second installation shaft (421) is rotatably installed inside the box body (310), and a dial wheel is fixed on the second installation shaft (421) (422) and the deflection wheel (423), the said toggle wheel (422) extends to the outside of the box body (310) through the operation groove (312); The front end of the rod body (110) is provided with a longitudinal rotation groove (113), and a first rotation axis (280) perpendicular to the direction of the second rotation axis (230) is fixed in the rotation groove (113), and the turret (210) is arranged on a rotation slot (113), and is rotatably mounted on the first rotating shaft (280); The deflection adjustment hole (111) is provided with an annular deflection steel wire (120). The front end of the deflection steel wire (120) is sleeved on the turret (210), and the rear end extends to the inside of the box body (310) and is sleeved on the deflection wheel (423 ), two operating holes (112) are provided with an annular operating steel wire (130), and the front ends of the two operating steel wires (130) pass through the support frame (220) and are sleeved on the first reel (240) and On the second winding wheel (250), the rear end extends to the inside of the box body (310) and is respectively sleeved on the two rotating wheels (412). The deflection steel wire (120) and the operating steel wire (130) are all in a tight state state. 2. A minimally invasive surgery device for bladder polyps according to claim 1, characterized in that: the first winding wheel (240), the second winding wheel (250) and the rotating wheel (412) are provided with An operation groove for accommodating the operation steel wire (130), and a deflection groove for accommodating the deflection steel wire (120) is arranged on the turret (210) and the deflection wheel (423). 3. A minimally invasive surgery device for bladder polyps according to claim 1, characterized in that: a separation pad (270) is arranged between the first winding wheel (240) and the second winding wheel (250) , the separation pad (270) is sleeved on the second shaft (230), the clamping jaw (260) connected to the first reel (240) and the clamping clamp connected to the second reel (250) The jaws (260) are arranged symmetrically. 4. A minimally invasive surgery device for bladder polyps according to claim 1, characterized in that: said first rotating shaft (280) is provided with two wire passing holes (281), two wire passing holes (281) The position corresponds to the position of the two operation holes (112), and the two operation steel wires (130) respectively pass through the two wire passing holes (281). 5. A minimally invasive surgery device for bladder polyps according to claim 1, characterized in that: a guide bracket (424) is fixed inside the box body (310), and the guide bracket (424) is located on the deflection wheel (423) Between the outlet of the deflection adjustment hole (111) and the rear end, the inside of the guide bracket (424) is provided with two layers of guide wheels (425), and the two steel wires of the deflection steel wires (120) are sequentially drawn from the two guide wheels (425) After the bottom is passed through, the deflection wheel (423) is placed on the deflection wheel (423), and the deflection groove for accommodating the deflection steel wire (120) is arranged on the guide wheel (425). 6. A minimally invasive surgery device for bladder polyps according to claim 1, characterized in that: four deflection brackets (413) are also fixed inside the box body (310), and every two deflection brackets (416) are One group, two groups are arranged symmetrically, the deflection runner (417) is installed on the rotation of the deflection bracket (416), and the two steel wires of each operation steel wire (130) pass through one set of deflection brackets (416). Two deflection wheels (417) are sheathed on the running wheel (412) behind, and the deflection wheels (417) are provided with the operation groove that accommodates operation steel wire (130). 7. A minimally invasive surgery device for bladder polyps according to claim 1, characterized in that: the toothed plate (414) is slidably sleeved on the sliding rod (418), and the sliding rod (418) moves along the toothed plate direction, the two ends of the sliding rod (418) are installed on the inner side of the box body (310) through the fixed bracket, and the sliding rods at the two ends of the tooth plate (414) are covered with return springs (419), and the return springs (419 ) one end against the side wall of the tooth plate (414), and the other end against the side wall of the fixed bracket. 8. A minimally invasive surgery device for bladder polyps according to claim 7, characterized in that: the bottom of the toothed plate (414) is fixed with a slider, and the inner bottom of the box body (310) at the bottom of the toothed plate (414) is A chute is fixed, and the slider is slidably installed in the chute. 9. A minimally invasive surgery device for bladder polyps according to claim 1, characterized in that: the installation box (300) also includes a load-bearing frame (320), and the load-bearing frame (320) is arc-shaped , fixed on the inner wall of the box body (310) away from the rod body (110).

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