CN219000380U - Transmission structure of endoscope - Google Patents

Abstract

The utility model discloses a transmission structure of an endoscope, which comprises a handle body and a movable connecting box, wherein the movable connecting box is movably inserted on the handle body, and a transmission part is arranged on the handle body; the utility model relates to the technical field of transmission equipment, a movable connecting box is connected with a pliers lifting device, a power gear is rotated, the power gear drives the connecting gear to rotate, two driving gears rotate accordingly, under the meshing of the two racks, the two racks transversely move to drive the movable connecting box to move, the pliers lifting device is controlled to work and reset, the power gear with the minimum rotation speed is rotated, the rotating speed of the power gear is reduced by the connecting gear, the rotating speeds of the two driving gears are reduced accordingly, the situation that the operating speed of the pliers lifting device is too high due to poor control speed when the power gear is rotated is avoided, the operation effect is ensured, and the requirements on the action fineness are low, so that the pliers lifting device is convenient to use.

Description

Transmission structure of endoscope

Technical Field

The utility model relates to the technical field of transmission equipment, in particular to a transmission structure of an endoscope.

Background

Endoscopes are usually matched with surgical instruments such as biopsy forceps to take out pathological tissues, a forceps lifter is used for driving the surgical instruments to lift, a transmission structure is arranged inside the endoscope to drive the forceps lifter to move, the transmission structure of some endoscopes needs to have high requirements on the fineness of hands of users nowadays, such as an endoscope with a publication number of CN211511727U and a transmission mechanism thereof, and the transmission mechanism comprises: the rotating wheel is arranged in the shell of the endoscope and can rotate around the center of the rotating wheel, and the outer side edge of the rotating wheel is provided with a latch; a driven gear meshed with the latch teeth at the outer side edge of the rotating wheel so as to follow the rotating wheel; a rack adapted to be coupled to a forceps lifter of the endoscope; the rack is meshed with the driven gear so as to follow the driven gear, and therefore the forceps lifter is driven to lift and return; in this patent application, because the size of runner is greater than the size of driven gear far away, consequently when using, if need lift the action range of pincers ware and less, then need meticulous hand action, inconvenient use to when touching the runner carelessly, will lead to lifting pincers ware action, influence normal work.

Disclosure of Invention

In order to solve the problems proposed in the background art, the utility model is realized by the following technical scheme: the transmission structure of the endoscope comprises a handle body and a movable connecting box, wherein the movable connecting box is movably inserted on the handle body, and a transmission part is arranged on the handle body;

the transmission part includes: the device comprises a return-type convex frame, a power gear, two rotating rods, a connecting gear, two driving gears, two racks and a protection assembly;

the power gear movable mounting is on the convex frame inside wall face of returning type, two bull stick movable mounting is on the interior wall face of handle, two bar through-holes have been seted up on the removal connection box lower wall face, two bar through-holes respectively with two bull stick assorted, connecting gear and power gear intermeshing's suit in two on the bull stick one of bull stick, two drive gear intermeshing's suit in two on the bull stick, two the rack respectively with two drive gear meshing's install on removing the connection box inside wall face, set up back type groove on the convex frame of returning type, protection components installs on back type groove.

Preferably, two guide posts are arranged on the inner side wall surface of the handle body, and the two guide posts are movably inserted on the movable connecting box.

Preferably, the power gear is smaller in size than the connecting gear.

Preferably, the sizes of the two driving gears are larger than the sizes of the power gears.

Preferably, the protection assembly includes: a plurality of springs and a protection frame;

the springs are arranged on the return grooves, the protection frames are movably inserted on the return grooves, and the protection frames are arranged at one ends of the springs.

Preferably, the protection frame is provided with an arc-shaped surface.

Advantageous effects

The utility model provides a transmission structure of an endoscope, which has the following beneficial effects: the movable connecting box is connected with the pliers lifting device, the power gear is rotated, the power gear drives the connecting gear to rotate, the two driving gears rotate accordingly, under the meshing of the two racks, the two racks transversely move to drive the movable connecting box to move, the work and the reset of the pliers lifting device are controlled, the smallest power gear is rotated, the rotating speed of the power gear is reduced by the connecting gear, the rotating speeds of the two driving gears are reduced accordingly, when the power gear is prevented from rotating, the operating effect is ensured because the operating speed of the pliers lifting device is too fast due to poor control, the operating effect is not high, the operating accuracy is convenient to use, when the pliers lifting device is not required to operate, the power gear is shielded by the protective frame, the error touching of the power gear is avoided, the normal operation of the work is ensured, and when the pliers lifting device is required to operate, the protective frame is pressed until the power gear is contacted, and the power gear is operated, so that the pliers lifting device is controlled.

Drawings

FIG. 1 is a schematic three-dimensional view of a driving structure of an endoscope according to the present utility model.

FIG. 2 is a schematic top cross-sectional view of a movable junction box portion of a transmission structure of an endoscope according to the present utility model.

FIG. 3 is a schematic top cross-sectional view of a guard assembly portion of a transmission structure of an endoscope according to the present utility model.

In the figure: 1. the handle body, 2, remove the connection box, 3, the protruding frame of back formula, 4, power gear, 5, bull stick, 6, connecting gear, 7, drive gear, 8, rack, 9, guide post, 10, spring, 11, protection frame, 12, the cambered surface of back formula.

Detailed Description

All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: referring to fig. 1-3, a transmission structure of an endoscope comprises a handle body 1 and a movable connection box 2, wherein the movable connection box 2 is movably inserted on the handle body 1, and a transmission part is arranged on the handle body 1;

the following are to be described: the movable connecting box 2 is connected with the pliers lifting device, and the movement of the movable connecting box 2 is controlled through the transmission part, namely the working and the resetting of the pliers lifting device are controlled through the transmission part;

in a specific implementation process, the transmission part may preferably adopt the following structure, which includes: the device comprises a return-type convex frame 3, a power gear 4, two rotating rods 5, a connecting gear 6, two driving gears 7, two racks 8 and a protection assembly; the power gear 4 is movably mounted on the inner side wall surface of the back-type convex frame 3, two rotating rods 5 are movably mounted on the inner side wall surface of the handle body 1, two strip-shaped through holes are formed in the lower wall surface of the movable connecting box 2, the two strip-shaped through holes are respectively matched with the two rotating rods 5, the connecting gear 6 and the power gear 4 are meshed with each other and sleeved on one rotating rod 5 of the two rotating rods 5, the two driving gears 7 are meshed with each other and sleeved on the two rotating rods 5, the two racks 8 are meshed with the two driving gears 7 and mounted on the inner side wall surface of the movable connecting box 2, a back-type groove is formed in the back-type convex frame 3, and the protection component is mounted on the back-type groove;

the following are to be described: the power gear 4 is rotated, the power gear 4 drives the connecting gear 6 to rotate, the two driving gears 7 rotate, under the meshing of the two racks 8, the two racks 8 transversely move to drive the movable connecting box 2 to move, and the work and the reset of the pliers lifting device are controlled;

preferably, two guide posts 9 are arranged on the inner side wall surface of the handle body 1, and the two guide posts 9 are movably inserted on the movable connecting box 2 and used for stabilizing the movement of the movable connecting box 2;

in a specific implementation, the protection component may preferably adopt the following structure, which includes: a plurality of springs 10 and a protection frame 11; the springs 10 are arranged on the square groove, the protection frame 11 is movably inserted on the square groove, and the protection frame 11 is arranged at one end of the springs 10;

the following are to be described: when the spring 10 is not stressed, the protection frame 11 shields the power gear 4, so that the power gear 4 is prevented from being touched by mistake, normal work is ensured, when the pliers lifter is required to act, the protection frame 11 is pressed firstly, the spring 10 is compressed until the spring contacts the power gear 4, the power gear 4 is rotated, and the pliers lifter is operated;

preferably, the protection frame 11 is provided with a circular arc surface 12, so as to improve the comfort level.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The transmission structure of the endoscope comprises a handle body and a movable connecting box, wherein the movable connecting box is movably inserted on the handle body;

the transmission part includes: the device comprises a return-type convex frame, a power gear, two rotating rods, a connecting gear, two driving gears, two racks and a protection assembly;

the power gear movable mounting is on the convex frame inside wall face of returning type, two bull stick movable mounting is on the interior wall face of handle, two bar through-holes have been seted up on the removal connection box lower wall face, two bar through-holes respectively with two bull stick assorted, connecting gear and power gear intermeshing's suit in two on the bull stick one of bull stick, two drive gear intermeshing's suit in two on the bull stick, two the rack respectively with two drive gear meshing's install on removing the connection box inside wall face, set up back type groove on the convex frame of returning type, protection components installs on back type groove.

2. The transmission structure of an endoscope according to claim 1, wherein two guide posts are provided on the inner side wall surface of the handle body, and the two guide posts are movably inserted into the movable connection box.

3. The transmission structure of an endoscope according to claim 1, wherein the power gear is smaller in size than the connecting gear.

4. The transmission structure of an endoscope according to claim 1, wherein the size of both of said driving gears is larger than the size of the power gear.

5. The transmission structure of an endoscope according to claim 1, wherein said guard assembly comprises: a plurality of springs and a protection frame;

the springs are arranged on the return grooves, the protection frames are movably inserted on the return grooves, and the protection frames are arranged at one ends of the springs.

6. The transmission structure of an endoscope according to claim 5, wherein the protection frame is provided with a circular arc surface.

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