阅读说明：本技术 一种可无级自锁的内窥镜结构 (Endoscope structure capable of stepless self-locking ) 是由 余虓 李文华 胡学成 秦操 毛业云 龙刚 刘成朋 刘威 乐东东 于 2019-09-23 设计创作，主要内容包括：本发明公开了一种可无级自锁的内窥镜结构,包括内窥镜手柄、具有软鞘的内窥镜工作鞘和设置于内窥镜手柄上、可控制软鞘弯曲的弯曲调节机构,弯曲调节机构包括钢丝转轮、阻尼轴和转向钢丝,阻尼轴的一端同轴固定于钢丝转轮内,另一端固定于内窥镜手柄上,转向钢丝的一端固定于钢丝转轮上,另一端插入软鞘并与软鞘的前端固定,钢丝转轮连接有可控制其转动的转轮驱动机构。转轮驱动机构驱动钢丝转轮旋转,钢丝转轮旋转驱动转向钢丝做双向拉伸移动,控制力量即可满足内窥镜弯头的精确摆动要求。转动钢丝转轮使阻尼轴的两端产生相对运动,利用阻尼轴两端产生相对转动后的阻尼力作为钢丝转轮复位的阻力,使钢丝转轮保持在转动位置,实现无级自锁。(The invention discloses an endoscope structure capable of stepless self-locking, which comprises an endoscope handle, an endoscope working sheath with a soft sheath and a bending adjusting mechanism which is arranged on the endoscope handle and can control the bending of the soft sheath, wherein the bending adjusting mechanism comprises a steel wire rotating wheel, a damping shaft and a steering steel wire, one end of the damping shaft is coaxially fixed in the steel wire rotating wheel, the other end of the damping shaft is fixed on the endoscope handle, one end of the steering steel wire is fixed on the steel wire rotating wheel, the other end of the steering steel wire is inserted into the soft sheath and is fixed with the front end of the soft sheath, and the steel wire rotating wheel is connected with a. The rotating wheel driving mechanism drives the steel wire rotating wheel to rotate, the steel wire rotating wheel drives the steering steel wire to do bidirectional stretching movement, and the requirement of precise swinging of the endoscope elbow can be met by controlling force. The steel wire rotating wheel is rotated to enable two ends of the damping shaft to generate relative motion, and damping force generated by the two ends of the damping shaft after relative rotation is used as resistance for resetting the steel wire rotating wheel, so that the steel wire rotating wheel is kept at a rotating position, and stepless self-locking is realized.)

1. An endoscope structure capable of stepless self-locking, comprising an endoscope handle (1), an endoscope working sheath (2) with a soft sheath (2.2) and a bending adjusting mechanism (3) which is arranged on the endoscope handle (1) and can control the bending of the soft sheath (2.2), characterized in that: the bending adjusting mechanism (3) comprises a steel wire rotating wheel (3.3), a damping shaft (3.5) and a steering steel wire (3.6), one end of the damping shaft (3.5) is coaxially fixed in the steel wire rotating wheel (3.3), the other end of the damping shaft is fixed on the endoscope handle (1), one end of the steering steel wire (3.6) is fixed on the steel wire rotating wheel (3.3), the other end of the steering steel wire is inserted into the soft sheath (2.2) and fixed with the front end of the soft sheath (2.2), and the steel wire rotating wheel (3.3) is connected with a rotating wheel driving mechanism capable of controlling the rotation of the steel wire rotating wheel.

2. A steplessly self-lockable endoscope construction according to claim 1, characterized in that: the runner actuating mechanism includes arc driving lever (3.1), the bottom left and right sides of arc driving lever (3.1) is fixedly connected with one respectively to the pivot that the middle part of arc driving lever (3.1) extended, be first pivot (3.8) and second pivot (3.9) respectively, first pivot (3.8) with second pivot (3.9) connect in through first supporting bearing (3.10) and second supporting bearing (3.4) respectively in the left and right sides of endoscope handle (1), the one end of second pivot (3.9) is passed second supporting bearing (3.4), coaxial fastening in steel wire runner (3.3).

3. A steplessly self-lockable endoscope construction according to claim 2, characterized in that: the middle part of steel wire runner (3.3) is opened there is the shaft hole, the shaft hole internal fixation has sleeve (3.11), the one end of damping axle (3.5) with the one end of second pivot (3.9) is fixed in respectively inside the left and right sides of sleeve (3.11).

4. A steplessly self-lockable endoscope construction according to claim 1, characterized in that: the other end of the damping shaft (3.5) is fixed with a damping rotating shaft retainer (3.2), and the damping rotating shaft retainer (3.2) is fixed in the endoscope handle (1).

5. A steplessly self-lockable endoscope construction according to claim 1, characterized in that: at least two parallel steering steel wires (3.6) are arranged in the soft sheath (2.2), one end of each two parallel steering steel wires (3.3) is fixed on one steel wire rotating wheel (3.3), and the front ends of the two steering steel wires (3.6) are respectively fixed at the positions of 180 degrees in the circumferential direction of the front end of the soft sheath (2.2).

Technical Field

the invention relates to the technical field of endoscope structures, in particular to an endoscope structure capable of stepless self-locking.

Background

The current method for surgical treatment of pathological tissues in human body cavities is changed from traditional open surgical treatment to minimally invasive surgical treatment. The camera lighting device and the surgical instrument which are needed in the minimally invasive surgery treatment process are difficult to directly reach a target point, and the instrument needs to be guided into a cavity channel through a guide device endoscope. However, in the current clinical application, the endoscope is difficult to guide the instrument to a target point in a narrow cavity, and doctors need to continuously adjust the turning direction and the turning angle of the soft sheath to complete all-round observation in the cavity and delivery of the instrument in the operation process. After the endoscope is adjusted to a proper orientation, a doctor needs to keep the orientation of the endoscope at the moment to perform an operation, and the operation is very hard and inconvenient, and exerts the operation level of the doctor to a certain extent.

Patent No. 103654693B, entitled "improved angle adjustment mechanism for endoscope" discloses a self-locking structure for bending a soft sheath of an endoscope, which is based on the principle that a friction plate is used to press a steel wire wheel, so that the steel wire wheel is self-locked at any position, but the patent requires to operate an angle adjustment handle first, so that the steel wire wheel rotates to drive the soft sheath to a bending position, and then to operate a locking handle to lock the steel wire wheel.

The patent No. 107613837B, the patent name "is used for the crooked auto-lock structure of flexible sheath of endoscope" also discloses in the self-locking angle guiding mechanism of endoscope ", its principle is to utilize the spring to support the steel wire wheel and make the steel wire wheel fix a position in the awl section of thick bamboo, utilize the frictional force between awl section of thick bamboo and the steel wire wheel, prevent that the steel wire wheel from rotating and realizing the auto-lock, but the assembly process of this patent is comparatively complicated, need utilize the restoring force of nut regulating spring to guarantee to produce sufficient frictional force between awl section of thick bamboo and the steel wire wheel and prevent that the steel wire wheel from rotating, to the assembly requirement height, in case the assembly precision is not enough, or because relative rotation between awl section of thick bamboo and the steel wire wheel, lead to the frictional force change, all probably lead to the auto-.

therefore, how to design a stepless self-locking endoscope structure with simple structure, convenient assembly and high operation precision is a problem faced at present.

Disclosure of Invention

The present invention aims to solve the above-mentioned drawbacks of the background art, and provides a stepless self-locking endoscope structure which does not need to operate a steering and bending mechanism all the time after a doctor finds a treatment position.

In order to achieve the purpose, the endoscope structure capable of stepless self-locking designed by the invention comprises an endoscope handle, an endoscope working sheath with a soft sheath and a bending adjusting mechanism which is arranged on the endoscope handle and can control the bending of the soft sheath, and is characterized in that: the bending adjusting mechanism comprises a steel wire rotating wheel, a damping shaft and a steering steel wire, one end of the damping shaft is coaxially fixed in the steel wire rotating wheel, the other end of the damping shaft is fixed on the endoscope handle, one end of the steering steel wire is fixed on the steel wire rotating wheel, the other end of the steering steel wire is inserted into the soft sheath and is fixed with the front end of the soft sheath, and the steel wire rotating wheel is connected with a rotating wheel driving mechanism capable of controlling the steel wire rotating wheel to rotate.

Furthermore, the rotating wheel driving mechanism comprises an arc-shaped driving lever, the left side and the right side of the bottom of the arc-shaped driving lever are respectively and fixedly connected with a rotating shaft extending towards the middle of the arc-shaped driving lever, the rotating shaft is respectively a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are respectively connected with the left side and the right side of the endoscope handle through a first supporting bearing and a second supporting bearing, and one end of the second rotating shaft penetrates through the second supporting bearing and is coaxially fixed in the steel wire rotating wheel.

Furthermore, the middle part of steel wire runner is opened there is the shaft hole, the shaft hole internal fixation has the sleeve, the one end of damping axle with the one end of second pivot is fixed in respectively inside the telescopic left and right sides.

Furthermore, a damping rotating shaft retainer is fixed at the other end of the damping shaft and is fixed in the endoscope handle.

Furthermore, at least two parallel steering steel wires are arranged in the soft sheath, one end of each two parallel steering steel wires is fixed on one steel wire rotating wheel, and the front ends of the two steering steel wires are respectively fixed at the positions which are mutually spaced by 180 degrees in the circumferential direction of the front end of the soft sheath.

The invention has the beneficial effects that: the steel wire rotating wheel is driven to rotate by the rotating wheel driving mechanism, the steering steel wire is driven to rotate by the steel wire rotating wheel to do bidirectional stretching movement, and the requirement on accurate swinging of the endoscope elbow can be met by controlling force. The two ends of the damping shaft can move relatively by rotating the steel wire rotating wheel, and the damping force generated by the relative rotation of the two ends of the damping shaft is used as the resistance of the steel wire rotating wheel to reset, so that the steel wire rotating wheel is kept at the rotating position, and stepless self-locking is realized. During operation, after a doctor adjusts the soft sheath to a target point, the soft sheath stays at the target position by loosening the rotary wheel driving mechanism. The doctor need not keep the control to the steel wire runner all the time, has reduced doctor's operation intensity of labour, has reduced the operation error.

Drawings

FIG. 1 is a perspective view of an endoscope structure capable of stepless self-locking in the present invention;

FIG. 2 is a perspective view of the bend adjustment mechanism of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

the endoscope comprises an endoscope handle 1, an endoscope working sheath 2.1-a hard sheath 2.2-a soft sheath, a bending adjusting mechanism 3.1-an arc deflector rod 3.2-a damping rotating shaft retainer 3.3-a steel wire rotating wheel 3.4-a second supporting bearing 3.5-a damping shaft 3.6-a steering steel wire 3.7-a rotating wheel copper core 3.8-a first rotating shaft 3.9-a second rotating shaft 3.10-a first supporting bearing 3.11-a sleeve 3.12-a blocking cover.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

The endoscope structure capable of stepless self-locking as shown in fig. 1 comprises an endoscope handle 1, a hard sheath 2.1 fixed at the front end of the endoscope handle 1 and a soft sheath 2.2 fixed at the front end of the hard sheath 2.1. The endoscope handle 1 is provided with a bending adjusting mechanism 3 for controlling the bending of the soft sheath 2.2.

As shown in fig. 2-3, the bending adjustment mechanism 3 includes a steel wire wheel 3.3, a damping shaft 3.5 and a steering steel wire 3.6, a shaft hole is opened in the middle of the steel wire wheel 3.3, a sleeve 3.11 is fixed in the shaft hole, a wheel copper core 3.7 and a blanking cover 3.12 are coaxially fixed in the sleeve (the fixing structure strength of the damping shaft 3.5 in the steel wire wheel 3.3 is increased by the structure of the wheel copper core, the second rotating shaft 3.9 is guided into the wheel copper core 3.7 and fixed by the structure of the blanking cover 3.12), one end of the damping shaft 3.5 is fixed in the wheel copper core 3.7, the other end is fixed in the damping rotating shaft holder 3.2, and the damping rotating shaft holder 3.2 is fixed in the endoscope 1. Two parallel steering steel wires 3.6 are arranged in the soft sheath 2.2, one end of each two parallel steering steel wires 3.3 is fixed on one steel wire rotating wheel 3.3, one end of each steering steel wire 3.6 is fixed on the steel wire rotating wheel 3.3, the other end of each steering steel wire is inserted into the soft sheath 2.2 and fixed with the front end of the soft sheath 2.2, and the front ends of the two steering steel wires 3.6 are respectively fixed at the positions of the front end of the soft sheath 2.2, which are spaced by 180 degrees in the circumferential direction. The other end of runner copper core 3.7 is fixed with runner actuating mechanism, runner actuating mechanism includes arc driving lever 3.1, the bottom left and right sides of arc driving lever 3.1 is fixedly connected with a pivot that extends to the middle part of arc driving lever 3.1 respectively, be first pivot 3.8 and second pivot 3.9 respectively, first pivot 3.8 and second pivot 3.9 are connected in the left and right sides of endoscope handle 1 through first supporting bearing 3.10 and second supporting bearing 3.4 respectively, second supporting bearing 3.4 is passed to the one end of second pivot 3.9, blanking cover 3.12 coaxial fixation is in runner copper core 3.7.

According to the invention, a doctor holds the endoscope handle 1 with one hand and holds the endoscope working sheath 2 with the other hand, pushes the endoscope working sheath 2 into a cavity, dials the shift lever 3.1 according to actual needs, the shift lever 3.1 drives the second rotating shaft 3.9 to rotate, the second rotating shaft drives the steel wire rotating wheel 3.3 to rotate, so that the steering steel wire 3.6 is driven to bend, the front end bending steering angle of the soft sheath 2.2 is adjusted, the shift lever 3.1 is loosened after the front end of the soft sheath 2.2 accurately reaches a target point, at the moment, two ends of the damping shaft 3.5 generate relative rotation (one end fixed with the damping rotating shaft retainer 3.2 is not rotated all the time), and damping force generated by the relative rotation of two ends of the damping shaft 3.5 becomes retaining force for retaining the steering steel wire 3.6 at the target position, so as to realize stepless self-locking of. If the flexible sheath 2.2 needs to be bent in multiple directions in the cavity, the flexible sheath 2.2 can be driven to bend in different directions by arranging the plurality of bending adjusting mechanisms 3 on the endoscope handle 1, and the flexible sheath 2.2 can reach a target point on the premise of not rotating the endoscope handle 1.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.