CN109008903B

CN109008903B - Endoscope operation part and endoscope

Info

Publication number: CN109008903B
Application number: CN201810874580.5A
Authority: CN
Inventors: 张俊俊; 辜嘉
Original assignee: Suzhou Zhongke Advanced Technology Research Institute Co Ltd
Current assignee: Suzhou Zhongke Advanced Technology Research Institute Co Ltd
Priority date: 2018-08-03
Filing date: 2018-08-03
Publication date: 2020-11-13
Anticipated expiration: 2038-08-03
Also published as: CN109008903A

Abstract

An endoscope operation part comprises a rotating wheel assembly, a bidirectional ratchet wheel assembly and a deflector rod; the rotating wheel assembly comprises a rotating wheel and a rotating wheel outer sleeve, the rotating wheel comprises a rotating disc and a rotating shaft, the rotating shaft is fixedly connected with one side of the rotating disc, the rotating wheel outer sleeve is sleeved on the rotating shaft, and one end, far away from the rotating disc, of the rotating shaft penetrates out of the rotating wheel outer sleeve; the bidirectional ratchet assembly comprises an annular adjusting and controlling piece, a ratchet core, a first limiting terminal, a second limiting terminal and an internal gear; the inner gear is sleeved on the rotating shaft; one end of the deflector rod is sleeved on the rotating shaft. The endoscope operation part can realize three functions of forward rotation, reverse rotation and stopping of the rotating wheel due to the carrying of the bidirectional ratchet wheel structure, is convenient to use and can be operated by one hand. And more accurate in limiting the fixing mode, the fixing mode is stable, the head end direction can be well fixed, and the operation is more convenient. Further, an endoscope including the endoscope operation portion is provided.

Description

Endoscope operation part and endoscope

Technical Field

The invention relates to the technical field of medical instruments, in particular to an endoscope operating part and an endoscope.

Background

When a hospital needs to use an endoscope for examination and treatment, an electronic endoscope is needed. Sometimes, in order to fix the head end direction and prevent an accident from occurring, the endoscope operation portion needs to be fixed. The operation is mostly carried out by using two hands, and the operation by one hand is very inconvenient.

The side control structure of the endoscope is generally of two types, namely a side runner type and a side poking rod type. Traditional avris runner formula fixed scheme relies on the increase frictional force to fix for toggle switch, and needs to pay attention to toggle switch and prevents that it from skidding, causes the skew of head end direction. The side shifting levers do not provide a means for attachment.

Disclosure of Invention

In view of this, it is desirable to provide an endoscope operation section and an endoscope that can be operated with one hand and that can fix the head end direction well.

An endoscope operation part comprises a rotating wheel assembly, a bidirectional ratchet wheel assembly and a deflector rod;

the rotating wheel assembly comprises a rotating wheel and a rotating wheel outer sleeve, the rotating wheel comprises a rotating disc and a rotating shaft, the rotating shaft is fixedly connected with one side of the rotating disc, the rotating wheel outer sleeve is sleeved on the rotating shaft, and one end, far away from the rotating wheel, of the rotating shaft penetrates out of the rotating wheel outer sleeve;

the bidirectional ratchet assembly comprises an annular adjusting and controlling piece, a ratchet core, a first limiting terminal, a second limiting terminal and an internal gear;

the inner side of the annular adjusting part is provided with an adjusting groove body, a first limiting groove and a second limiting groove at intervals, and the adjusting groove body comprises a first groove, a second groove and a third groove which are sequentially arranged;

the ratchet wheel core is sleeved on the rotating wheel outer sleeve, a blind hole is formed in the periphery of the ratchet wheel core along the radial direction, an elastic sliding assembly is arranged in the blind hole, one end, far away from the bottom of the blind hole, of the elastic sliding assembly can slide in the first groove, the second groove and the third groove, a fourth groove and a fifth groove are formed in two opposite sides of the periphery of the ratchet wheel core, the fourth groove and the first limiting groove are correspondingly arranged in positions, the fifth groove and the second limiting groove are correspondingly arranged in positions, a first elastic piece is arranged on the inner wall of the fourth groove, and a second elastic piece is arranged on the inner wall of the fifth groove;

the internal gear is sleeved on the rotating shaft;

the first limiting terminal comprises a first connecting piece and a first limiting piece which are fixedly connected, the first connecting piece is arranged in the fourth groove, one end, far away from the inner wall of the fourth groove, of the first elastic piece is in contact with one side of the first connecting piece, the first limiting piece extends into the inner side of the inner gear, and the first limiting piece is used for limiting the gear of the inner gear;

the second limiting terminal comprises a second connecting piece and a second limiting piece which are fixedly connected, the second connecting piece is arranged in the fifth groove, one end, far away from the inner wall of the fifth groove, of the second elastic piece is in contact with one side of the second connecting piece, the second limiting piece extends into the inner side of the internal gear, and the second limiting piece is used for limiting the gear of the internal gear;

the deflector rod is sleeved on the rotating shaft.

In one embodiment, the elastic sliding assembly includes a third elastic member and a bead, one end of the third elastic member contacts with the bottom of the blind hole, the bead is disposed at the other end of the third elastic member, the bead is partially accommodated in the adjusting and controlling groove, and the bead is slidable in the first groove, the second groove and the third groove.

In one embodiment, the first, second and third elastic members are springs.

In one embodiment, the shifting lever is provided with a connecting portion and a shifting portion fixedly connected with the connecting portion, the connecting portion is circular, a third through hole is formed in the middle of the connecting portion, the shape of the third through hole is matched with the structure of one end, far away from the rotating disc, of the rotating shaft, and one end, far away from the connecting portion, of the shifting portion extends to one end, close to the rotating disc, of the shifting portion.

In one embodiment, the wheel housing is fixedly connected to the housing of the operating portion.

In one embodiment, the first connecting piece and the first limiting piece of the first limiting terminal are arranged in a step shape, and the second connecting piece and the second limiting piece of the second limiting terminal are arranged in a step shape.

In one embodiment, the width of the open end of the fourth groove is greater than the width of the bottom of the fourth groove.

In one embodiment, the width of the open end of the fifth groove is greater than the width of the bottom of the fifth groove.

In one embodiment, a fixing screw is arranged at the end part of one end of the rotating shaft, which is far away from the rotating wheel, and the shifting lever and the inner gear are fixed on the rotating shaft by the fixing screw.

An endoscope includes the endoscope operation section.

The endoscope operation part is provided with the bidirectional ratchet wheel structure, can realize three functions of forward rotation, reverse rotation and stop of the rotating wheel by utilizing the advantages of forward rotation, reverse rotation and stop of the bidirectional ratchet wheel, is convenient to use and operable by one hand, and can prevent the misoperation of a doctor under the condition that the doctor does not know which side the lens rotates. Compare with traditional endoscope operation portion, more accurate on the fixed mode of restriction, fixed mode is steady, fixed head end direction that can be good, it is also more convenient to operate.

The endoscope operation part of the endoscope is provided with the bidirectional ratchet wheel structure, and three functions of forward rotation, reverse rotation and stop of the rotating wheel can be realized by utilizing the advantages of forward rotation, reverse rotation and stop of the bidirectional ratchet wheel. Therefore, the endoscope is convenient to use, can be operated by one hand, and can prevent the misoperation of a doctor under the condition that the doctor does not know which side the lens rotates.

Drawings

FIG. 1 is an exploded view of an endoscope operating section according to an embodiment;

FIG. 2 is a schematic view showing an assembled structure of an operating portion of the endoscope shown in FIG. 1;

FIG. 3 is a cross-sectional view schematically showing the operation portion of the endoscope shown in FIG. 2;

FIG. 4 is a schematic structural view of an embodiment of a ratchet core;

FIG. 5 is a schematic view of the elastic sliding member at the first groove of the annular adjuster;

FIG. 6 is a schematic view of another perspective of the resilient sliding member at the first groove of the annular adjuster;

FIG. 7 is a schematic view of the elastic sliding element at the second groove of the ring-shaped controlling member;

FIG. 8 is a schematic view of another perspective of the resilient sliding member at the second groove of the annular adjuster;

FIG. 9 is a schematic view of the elastic sliding element at the third groove of the ring-shaped controlling member;

fig. 10 is a schematic view of another perspective of the elastic sliding member at the third groove of the ring adjuster.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 3, an endoscope operating portion 100 of an embodiment includes a wheel assembly, a bidirectional ratchet assembly, and a shift lever 90.

The wheel assembly includes a wheel 10 and a wheel sleeve 20. The rotary wheel 10 comprises a rotary disc 12 and a rotary shaft 14, and the rotary shaft 14 is fixedly connected with one side of the rotary disc 12. The runner 10 is mainly used for driving the traction wire to move so as to enable the snake bone at the end part of the endoscope to move. The wheel 10 is moved by the force transmitted from the lever 90.

The rotating wheel casing 20 is sleeved on the rotating shaft 14, and one end of the rotating shaft 14 far away from the rotating disc 12 penetrates through the rotating wheel casing 20. The rotor sleeve 20 is primarily used to secure the rotor 10 while limiting the range of rotation of the rotor 10. The wheel housing 20 is fixedly connected to the housing of the endoscope operation section.

The bidirectional ratchet assembly includes an annular control member 30, a ratchet core 40, a first limit terminal 50, a second limit terminal 60, and an internal gear 80.

The inner side of the annular adjusting member 30 is provided with an adjusting groove body 32, a first limiting groove 34 and a second limiting groove 36 at intervals. The regulating groove body 32 comprises a first groove 322, a second groove 324 and a third groove 326 which are arranged in sequence.

The annular adjusting control part 30 is provided with a toggle piece 38, which is convenient for users to adjust and control. The normal rotation, reverse rotation and stopping of the rotary wheel 10 can be realized by adjusting the position of the poke sheet 38.

The ratchet core 40 is sleeved on the outer sleeve 20. Further, the ratchet core 40 is provided with a first through hole 42 penetrating the ratchet core 40. The shape of the first through hole 42 matches with the structure of the end of the wheel housing 20 away from the turntable 12, so that the ratchet core 40 can be well fixed and cannot move axially.

Referring to fig. 4, a blind hole 44 is radially formed on the outer circumference of the ratchet core 40. The blind hole 44 is provided with a resilient sliding member, and one end of the resilient sliding member, which is far away from the bottom of the blind hole 44, is slidable in the first groove 322, the second groove 324 and the third groove 326. Further, the elastic sliding assembly includes a third elastic member 41 and a bead 43. One end of the third elastic element 41 is in contact with the bottom of the blind hole 44, the ball 43 is arranged at the other end of the third elastic element 41, the ball 43 is partially accommodated in the regulating groove, and the ball 43 can slide in the first groove 322, the second groove 324 and the third groove 326. In the present embodiment, the third elastic member 41 is a spring. It is understood that in other embodiments, the third elastic member 41 may have other elastic structures. In the present embodiment, the beads 43 are steel beads. It is understood that in other embodiments, the beads 43 may be beads of other materials.

The ratchet core 40 is provided with fourth and

fifth grooves

46, 48 on opposite sides of its outer periphery. The fourth groove 46 and the first limit groove 34 are correspondingly arranged. The positions of the fifth groove 48 and the second limit groove 36 are correspondingly arranged. The inner wall of the fourth groove 46 is provided with a first elastic member 45, and the inner wall of the fifth groove 48 is provided with a second elastic member 47. Further, the width of the open end of the fourth groove 46 is greater than the width of the bottom of the fourth groove 46. The width of the open end of the fifth groove 48 is greater than the width of the bottom of the fifth groove 48. In the present embodiment, the first elastic member 45 and the second elastic member 47 are both springs. It is understood that in other embodiments, the first elastic member 45 and the second elastic member 47 may have other elastic structures. In other embodiments, the first elastic member 45 and the second elastic member 47 may be integrated. The first elastic member 45 and the second elastic member 47 as a whole pass through the ratchet core 40, the first elastic member 45 protrudes into the fourth recess 46, and the second elastic member 47 protrudes into the fifth recess 48.

In one embodiment, the endoscope operating portion 100 further includes a nut 70. The nut 70 is sleeved on the wheel sleeve 20. The nut 20 is used to lock the ratchet core 40 to the housing against movement. It will be appreciated that the ratchet wheel core 40 may be secured to the housing in other ways.

The internal gear 80 is sleeved on the rotating shaft 14. Further, the internal gear 80 includes a top plate and a gear ring formed by an edge of the top plate extending in a direction perpendicular to the top plate. The inner side of the gear ring is provided with a gear. The top plate is provided with a second through hole 82, and the shape of the second through hole 82 is matched with the structure of one end of the rotating shaft 14 far away from the rotating disc 12. When the wheel 10 moves, the inner gear 80 also moves. The internal gear 80 provides a good locking state of the first limit terminal 50 and the second limit terminal 60.

The first position-limiting terminal 50 includes a first connecting member 52 and a first position-limiting member 54 that are fixedly connected. The first connector 52 is disposed within the fourth recess 46. An end of the first elastic member 45 remote from the inner wall of the fourth groove 46 is in contact with a side of the first connecting member 52. The first elastic member 45 is used to provide a resilient elastic force to the first limit terminal 50. The first limiting member 54 extends into the inner side of the internal gear 80, and the first limiting member 54 is used for limiting the gear of the internal gear 80.

Further, the first connecting member 52 and the first limiting member 54 of the first limiting terminal 50 are disposed in a step shape. That is, the first connecting member 52 includes a first end and a second end disposed opposite to each other, and the first retaining member 54 includes a first end and a second end disposed opposite to each other. The first end of the first connecting member 52 is flush with the first end of the first retaining member 54. The distance from the first end to the second end of the first connecting member 52 is greater than the distance from the first end to the second end of the first position-limiting member 54.

The second position-limiting terminal 60 includes a second connecting member 62 and a second position-limiting member 64 fixedly connected thereto. The second connector 62 is disposed in the fifth recess 48. An end of the second elastic member 47 remote from the inner wall of the fifth recess 48 is in contact with a side of the second connecting member 62. The second elastic member 47 is used to provide a resilient elastic force to the second stopper terminal 60. The second limiting member 64 extends into the inner side of the internal gear 80, and the second limiting member 64 is used for limiting the gear of the internal gear 80.

Further, the second connecting member 62 and the second limiting member 64 of the second limiting terminal 60 are arranged in a step shape. That is, the second connecting member 62 includes a first end and a second end disposed opposite to each other, and the second retaining member 64 includes a first end and a second end disposed opposite to each other. The first end of the second connecting member 62 is flush with the first end of the second limiting member 64, and the distance from the first end to the second end of the second connecting member 62 is greater than the distance from the first end to the second end of the second limiting member 64.

The shift lever 90 is sleeved on the rotating shaft 14. Further, the shift lever 90 is provided with a connecting portion 92 and a shift portion 94 fixedly connected to the connecting portion 92. The connecting portion 92 is circular. The middle part of the connecting part 92 is provided with a third through hole 96, and the shape of the third through hole 96 is matched with the structure of one end of the rotating shaft 14 far away from the rotating disc 12. When the lever 90 moves, the wheel 10 also moves. The end of the toggle portion 94 remote from the connecting portion 92 extends towards the end adjacent the turntable 12.

The end of the rotating shaft 14 far away from the end of the rotating wheel 12 is provided with a fixing screw 91. The fixing screw 91 fixes the shift lever 90 and the internal gear 80 to the rotating shaft 14 to form a moving community.

When the annular adjustment member 30 is pulled forward, that is, when the elastic sliding component is located in the first groove 322, as shown in fig. 5 and 6, the second limiting member 64 on the right side in fig. 5 is pressed by the annular adjustment member 30, so that the second limiting member 64 on the right side deviates from the gear contact area, and the movement of the gear is not affected. Referring to fig. 6, the first limiting member 54 on the left side can well limit the counterclockwise operation of the gear. The clockwise operation pushes the first limit terminal 50 to move inward, and thus the clockwise operation is not affected. The first position-limiting terminal 50 springs back to the original position by the first elastic member 45. Therefore, when the shift lever 90 is shifted, the rotating wheel 10 can be driven to move clockwise, but not counterclockwise.

When the annular adjustment member 30 is pulled backward, that is, when the elastic sliding element is located in the third groove 326, the first limiting member 54 on the left side in fig. 7 is pressed by the annular adjustment member 30, so that the first limiting member 54 on the left side deviates from the gear contact area, and the movement of the gear is not affected. Referring to fig. 8, the second limiting member 64 on the right side can well limit the clockwise motion of the gear. The counterclockwise operation pushes the second limit terminal 60 to move inward, and thus the counterclockwise operation is not affected. The second position-limiting terminal 60 springs back to the original position by the second elastic element 47. Therefore, when the shift lever 90 is shifted, the rotating wheel 10 can be driven to move counterclockwise, but not clockwise.

When the ring control 30 stays at the original position, i.e. the elastic sliding component is located in the second groove 326, please refer to fig. 9 and 10. The gear is limited by the limit terminal in both clockwise and counterclockwise directions, that is, the dial 90 cannot drive the rotary wheel 10 to rotate, and enters a stop state.

The endoscope operation unit 100 has a bidirectional ratchet structure, and can realize three functions of forward rotation, reverse rotation, and stop of the rotary wheel 10 by using the advantages of forward rotation, reverse rotation, and stop of the bidirectional ratchet, and is convenient to use, operable with one hand, and capable of preventing a doctor from performing misoperation when the doctor does not know which side the lens rotates. Compared with the traditional endoscope operation part, the fixing mode is more precise in limiting the fixing mode, the fixing mode is stable, and the operation is more convenient.

Further, an endoscope including the endoscope operation portion 100 described above is also provided.

In the endoscope, the endoscope operation part is provided with the bidirectional ratchet wheel structure, and three functions of forward rotation, reverse rotation and stop of the rotating wheel can be realized by utilizing the advantages of forward rotation, reverse rotation and stop of the bidirectional ratchet wheel. Therefore, the endoscope is convenient to use, can be operated by one hand, and can prevent the misoperation of a doctor under the condition that the doctor does not know which side the lens rotates.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. An endoscope operation part comprises a rotating wheel assembly, a bidirectional ratchet wheel assembly and a deflector rod;

the rotating wheel assembly comprises a rotating wheel and a rotating wheel outer sleeve, the rotating wheel comprises a rotating disc and a rotating shaft, the rotating shaft is fixedly connected with one side of the rotating disc, the rotating wheel outer sleeve is sleeved on the rotating shaft, and one end, far away from the rotating disc, of the rotating shaft penetrates out of the rotating wheel outer sleeve; it is characterized in that the preparation method is characterized in that,

the internal gear is sleeved on the rotating shaft;

the deflector rod is sleeved on the rotating shaft.

2. The endoscope operating portion of claim 1, wherein the elastic sliding assembly comprises a third elastic member and a bead, one end of the third elastic member contacts the bottom of the blind hole, the bead is disposed at the other end of the third elastic member, the bead is partially received in the adjustment groove, and the bead is slidable in the first groove, the second groove and the third groove.

3. The endoscope operating section according to claim 2, wherein each of the first elastic member, the second elastic member, and the third elastic member is a spring.

4. The endoscope operating section according to claim 1, wherein the lever has a connecting portion and a toggle portion fixedly connected to the connecting portion, the connecting portion is circular, a third through hole is formed in a middle portion of the connecting portion, a shape of the third through hole matches a structure of an end of the rotating shaft away from the turntable, and an end of the toggle portion away from the connecting portion extends toward an end close to the turntable.

5. The endoscope operating section according to claim 1, wherein the wheel housing is fixedly connected to a housing of the operating section.

6. The operating portion of an endoscope according to claim 1, wherein the first connecting member and the first stopper of the first stopper terminal are provided in a step shape, and the second connecting member and the second stopper of the second stopper terminal are provided in a step shape.

7. The endoscope operating section according to claim 1, wherein a width of an open end of the fourth groove is larger than a width of a bottom of the fourth groove.

8. The endoscope operating section according to claim 1, wherein a width of an opening end of the fifth groove is larger than a width of a bottom of the fifth groove.

9. The endoscope operating section according to claim 1, wherein a fixing screw is provided at an end portion of the rotating shaft at an end remote from the rotary wheel, and the fixing screw fixes the shift lever and the internal gear to the rotating shaft.

10. An endoscope characterized by comprising the endoscope operating section according to any one of claims 1 to 9.