Endoscope operation planing deviceTechnical Field
The application relates to the technical field of medical appliances, in particular to an endoscopic surgical shaver.
Background
In the operation of hyperplasia of prostate, after the gland is cut electrically or enucleated by laser, the cut tissue is crushed and sucked out by an endoscope operation planer, and the endoscope operation planer can also be used for stone operation. The planing tool in the prior art generally adopts a structure that a tool bit is arranged on a power handle, and the power handle is internally provided with a motor and other structures for providing power for the tool bit.
The prior patent application with the publication number of CN111685854A discloses an underwater planing system capable of avoiding bladder damage and a using method, wherein the system comprises a planing main body system and a liquid pressure sensor system, the planing main body system comprises a planing tool bit and a control device for controlling the working of the planing tool bit, the tool part comprises an operation handle and the planing tool bit, the planing tool bit is inserted into a working channel through a surgical instrument interface on a handle of an endoscope system until the cutting edge of the planing tool bit extends out of a front port of the working channel, and the working channel can freely rotate to work. The planing tool bit is a rotary tool bit and is arranged on the operating handle, and the host machine is connected with the planing tool bit through the operating handle to provide working power for the planing tool bit and negative pressure for sucking drainage liquid in the cavity. The planing tool bit is hollow structure, is equipped with the pipeline in the operating handle, and the planing tool bit is through this pipeline and drainage album liquid bottle intercommunication for in with the drainage album liquid bottle with the tissue drainage of smashing.
In view of the above-mentioned related art, the inventors consider that only one of the existing inner cutters of the shaver has a disadvantage in crushing tissue or stones, and that the effective crushing cannot be performed, and there is a need for improvement.
Disclosure of Invention
The application provides an endoscope operation planing device, which is characterized in that an inner knife and an outer knife are arranged to form double knives, and the rotation directions of the two knives are opposite, so that the capability of smashing tissues and stones is improved.
The application provides an endoscopic surgical shaver, which adopts the following technical scheme:
The utility model provides an endoscope operation planing machine, includes the device body, the suction channel is established in the device body, the front end of device body is equipped with the endoscope head, be equipped with the motor in the device body, by motor drive pivoted driving gear, the internal rotation of suction channel is provided with ring gear, intermediate gear, internal gear, the interior outer wall of ring gear all is equipped with the teeth of a cogwheel, the outer wall teeth of a cogwheel and the driving gear meshing of ring gear, intermediate gear meshes with the inner wall teeth of an cogwheel, the ring gear simultaneously, the center of internal gear is fixed with the center pin, the front end of center pin is fixed with the inner knife, the ring gear is fixed with a plurality of connecting rods, the front end of connecting rod is fixed with outer sword.
Through adopting above-mentioned technical scheme, when motor drive driving gear rotated, drive the ring gear through gear engagement effect and rotate, then drive the internal gear through the transmission effect of intermediate gear. The planing device comprises the inner knife and the outer knife, and the inner knife and the outer knife are opposite in rotation direction through the reversing action of the intermediate gear, so that the planing effect is improved.
Optionally, the center pin is fixed with the disc of graphite material, the ring gear is fixed with polytetrafluoroethylene material's ring, the outer rampart of ring and the inner wall sliding seal contact of suction channel, the inner rampart of ring and the outer wall sliding seal contact of disc.
Through adopting above-mentioned technical scheme, graphite, polytetrafluoroethylene are the material that coefficient of friction is low, the wearability is good, and the combination of disc and ring is used for forming sealedly, avoids water to leak into each gear and motor place side, and disc and ring support each other simultaneously, make the central axis of center pin, ring gear stable maintenance in the central point of suction channel.
Optionally, a suction port is formed in the outer wall of the device body, the suction port is communicated with the suction channel, and the communication position of the suction port is located between the disc and the front end of the device body.
Through adopting above-mentioned technical scheme, after installing the joint on the suction inlet, can peg graft the pipeline, suction the liquid in the suction channel through the water pump.
Optionally, the device body internal fixation has the shaft, intermediate gear and shaft rotation are connected, intermediate gear's thickness is greater than the thickness of internal gear, ring gear.
By adopting the technical scheme, the gear shaft is used for preventing the position of the intermediate gear from moving, and the thickness of the gear ring is larger than that of the driving gear, so that the gear ring can keep the meshing state with the driving gear when axially sliding.
Optionally, the end that the center pin deviates from the inner knife rotates and is connected with the center pole, center pole and device body sliding connection, the end that center pole is located the device body is fixed with the clamp plate one.
Through adopting above-mentioned technical scheme, after pressing the clamp plate one, the clamp plate one acts on the center pin through the center pole, makes the inner knife remove a small distance to the outside direction of suction channel, improves the planing effect to the difficult broken object.
Optionally, the ring gear deviates from the tip fixed with of outer sword and changes the cover, it rotates to be connected with the pull ring to change the cover, the pull ring is fixed with a plurality of pull rods, pull rod and device body sliding connection, all pull rods wear out the device body and the tip is fixed with clamp plate two jointly.
Through adopting above-mentioned technical scheme, after pressing the clamp plate II, act on the ring gear through pull rod, pull ring, change the cover, make the outer sword remove by a small margin distance to the outside direction of suction channel, improve the planing effect to the object that is difficult to broken.
Optionally, the center rod penetrates through the second pressing plate and is in sliding connection with the second pressing plate.
By adopting the technical scheme, the center rod and the second pressing plate are mutually guided in a sliding way, so that the sliding stability is improved.
Optionally, the center rod is sleeved with a tension spring I, and two ends of the tension spring I are respectively fixed with the inner wall of the device body and the center rod.
By adopting the technical scheme, the restoring force is provided for the movement of the central rod through the tension spring I.
Optionally, a second tension spring is sleeved outside all the pull rods, and two ends of the second tension spring are respectively fixed with the inner wall of the device body and the pull ring.
By adopting the technical scheme, restoring force is provided by the movement of the tension spring two pairs of pull rods.
Optionally, the outer diameter of the first pressing plate is smaller than that of the second pressing plate.
Through adopting above-mentioned technical scheme, through customizing clamp plate one, clamp plate two's size, the user can conveniently press clamp plate one or clamp plate two through the thumb, perhaps presses two boards simultaneously, convenient operation.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the planing device is provided with the inner knife and the outer knife to form the double knives, and the rotation directions of the inner knife and the outer knife are opposite through the reversing action of the intermediate gear, so that the planing effect is improved;
2. By pressing the first pressing plate or the second pressing plate, the corresponding inner knife or outer knife is driven to axially move, so that the planing effect is improved to the maximum extent, human tissues or stones are not easy to clamp at the inlet of the suction channel, and the use is more convenient;
3. The sealing performance is ensured through the disc made of graphite and the ring made of polytetrafluoroethylene, and the wear resistance is good and the friction coefficient is low.
Drawings
FIG. 1 is a perspective view of an endoscopic surgical shaver of an embodiment;
FIG. 2 is a partial cross-sectional view of an embodiment;
FIG. 3 is an enlarged view of a portion of FIG. 2;
fig. 4 is a partial structural perspective view of the embodiment.
The reference numerals are 1, the device body, 11, the suction channel, 12, the endoscope head, 2, the motor, 21, the driving gear, 3, the gear ring, 13, the intermediate gear, 4, the internal gear, 41, the central shaft, 42, the internal knife, 31, the connecting rod, 32, the external knife, 14, the wheel shaft, 43, the disc, 33, the circular ring, 15, the suction port, 44, the central rod, 45, the first pressing plate, 34, the rotating sleeve, 35, the pull ring, 36, the pull rod, 37, the second pressing plate, 46, the first tension spring, 38 and the second tension spring.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the present embodiment discloses an endoscopic surgical shaver, which comprises a device body 1, wherein a suction channel 11 is arranged in the device body 1, and an endoscope head 12 is arranged at the front end of the device body 1.
Referring to fig. 2, 3 and 4, a motor 2 and a driving gear 21 driven by the motor 2 to rotate are arranged in the device body 1, a gear ring 3, an intermediate gear 13 and an internal gear 4 are rotationally arranged in the suction channel 11, gear teeth are arranged on the inner wall and the outer wall of the gear ring 3, the gear teeth on the outer wall of the gear ring 3 are meshed with the driving gear 21, the intermediate gear 13 is meshed with the internal gear 4 and the gear teeth on the inner wall of the gear ring 3 at the same time, a central shaft 41 is fixed at the center of the internal gear 4, an inner cutter 42 is fixed at the front end of the central shaft 41, a plurality of connecting rods 31 are fixed at the gear ring 3, and an outer cutter 32 is fixed at the front end of the connecting rods 31.
The side walls of the inner knife 42 and the outer knife 32 are provided with teeth, so that the planing effect is improved, and the adjacent connecting rods 31 are connected through circular arc-shaped rods, so that the rigidity is improved. The wheel axle 14 is fixed in the device body 1, and the intermediate gear 13 is rotationally connected with the wheel axle 14, so that the axis position of the intermediate gear 13 is fixed. When the motor 2 drives the driving gear 21 to rotate, the gear ring 3 is driven to rotate through the gear meshing action, then the internal gear 4 is driven to rotate through the transmission action of the intermediate gear 13, and the rotation directions of the gear ring 3 and the internal gear 4 are opposite, so that the rotation directions of the inner cutter 42 and the outer cutter 32 are opposite, and the planing effect is improved.
The central shaft 41 is fixed with a disc 43 made of graphite, the gear ring 3 is fixed with a ring 33 made of polytetrafluoroethylene, the outer annular wall of the ring 33 is in sliding sealing contact with the inner wall of the suction channel 11, and the inner annular wall of the ring 33 is in sliding sealing contact with the outer wall of the disc 43. Graphite and polytetrafluoroethylene are materials with low friction coefficient and good wear resistance, the combination of the disc 43 and the circular ring 33 is used for forming a seal, water is prevented from leaking into the sides of the gears and the motor 2, and meanwhile, the disc 43 and the circular ring 33 mutually support, so that the central axes of the central shaft 41 and the gear ring 3 are stably maintained at the central position of the suction channel 11.
Referring to fig. 2, the outer wall of the device body 1 is provided with a suction port 15, the suction port 15 communicates with the suction passage 11, and the communication position of the suction port 15 is located between the disk 43 and the front end of the device body 1. After the connector is installed on the suction port 15, a pipeline can be inserted, and the liquid in the suction channel 11 is sucked by the water pump.
In this embodiment, the axial positions of the inner knife 42 and the outer knife 32 can be independently slid by a small margin, and the specific structure is as follows:
Referring to fig. 2,3 and 4, the thickness of ring gear 3 is larger than the thickness of driving gear 21, so that ring gear 3 is kept engaged with driving gear 21 when axially sliding, and the thickness of intermediate gear 13 is larger than the thicknesses of ring gear 4 and ring gear 3, so that ring gear 4 and ring gear 3 are kept engaged with intermediate gear 13 when axially sliding.
The end of the central shaft 41, which is away from the inner knife 42, is rotatably connected with a central rod 44, the central rod 44 is slidably connected with the device body 1, and the end of the central rod 44, which is positioned outside the device body 1, is fixedly provided with a first pressing plate 45. The end part of the gear ring 3, which is away from the outer cutter 32, is fixed with a rotating sleeve 34, the rotating sleeve 34 is rotationally connected with a pull ring 35, the pull ring 35 is fixed with a plurality of pull rods 36, the pull rods 36 are in sliding connection with the device body 1, all the pull rods 36 penetrate out of the device body 1, and the end parts are jointly fixed with a pressing plate II 37.
The center rod 44 penetrates through the second pressing plate 37 and is in sliding connection with the second pressing plate 37, and the center rod 44 and the second pressing plate 37 mutually conduct sliding guide, so that sliding stability is improved. The center rod 44 is sleeved with a tension spring I46, and two ends of the tension spring I46 are respectively fixed with the inner wall of the device body 1 and the center rod 44. And a second tension spring 38 is sleeved outside all the pull rods 36, and two ends of the second tension spring 38 are respectively fixed with the inner wall of the device body 1 and the pull ring 35. The first tension spring 46 provides a restoring force for the movement of the center rod 44 and the second tension spring 38 provides a restoring force for the movement of the pull rod 36. The first platen 45 has a smaller outer diameter than the second platen 37, and a user can conveniently press down either the first platen 45 or the second platen 37 by a thumb, or both platens simultaneously. After pressing the first pressing plate 45, the first pressing plate 45 acts on the central shaft 41 through the central rod 44, so that the inner knife 42 moves a small distance towards the outer direction of the suction channel 11, the planing effect on the hard-to-crush object is improved, similarly, after pressing the second pressing plate 37, the outer knife 32 moves a small distance towards the outer direction of the suction channel 11 through the pull rod 36, the pull ring 35 and the rotating sleeve 34, the planing effect on the hard-to-crush object is improved, and the inner knife 42 and the outer knife 32 can respectively move or move together, so that the optimal planing effect is achieved.
The embodiment of the application relates to an endoscopic operation planing device, which is implemented by installing a connector on a suction port 15, inserting a pipeline, inserting the front end of a device body 1 into an operation position, driving an inner knife 42 and an outer knife 32 to rotate by starting a motor 2, planing and crushing human tissues or stones, and sucking liquid and scraps in a suction channel 11 by a water pump connected with the pipeline in an external mode.
The planing machine is provided with the inner cutter 42 and the outer cutter 32 to form double cutters, and the rotation directions of the inner cutter 42 and the outer cutter 32 are opposite through the reversing action of the intermediate gear 13, so that the planing effect is improved. And through pressing the first pressing plate 45 or the second pressing plate 37, the corresponding inner knife 42 or the outer knife 32 is driven to axially move, so that the planing effect is improved to the greatest extent, human tissues or stones are not easy to clamp at the inlet of the suction channel 11, and the use is facilitated.
The above embodiments are not intended to limit the scope of the application, so that the equivalent changes of the structure, shape and principle of the application are covered by the scope of the application.