CN215650988U - Endoscopic equipment withdrawing device - Google Patents

Abstract

The utility model provides a retracting device of endoscopic equipment, which comprises a driving assembly, a transmission assembly and a roller assembly, wherein the roller assembly comprises at least two rollers; the driving assembly is connected with the transmission assembly, the transmission assembly is connected with the roller assembly, and the two rollers are mutually matched to compress and pull the cable of the endoscopic equipment. The endoscopic equipment withdrawing device uses rolling friction force to drag the cable, has simple structure and stable operation, and can realize the uniform withdrawal of the endoscopic equipment. The endoscopic equipment is stably withdrawn at a constant speed, so that a series of images with accurate position information can be collected in the withdrawing process, and more accurate diagnosis basis is provided for doctors. On the other hand, the moving direction of the endoscopic equipment can be prevented from deviating due to improper force application in the withdrawing process, and the endoscopic equipment collides with the body cavity and causes damage to the human body.

Description

Endoscopic equipment withdrawing device

Technical Field

The utility model relates to a retraction device of endoscopic equipment, which is particularly applied to the technical field of medical equipment.

Background

Endoscopic equipment is a medical tool used to observe the internal condition of a patient, and when in use, a doctor controls a cable to move in a natural pore canal in a human body for examination. The ultrasonic endoscope is a medical diagnosis device containing an optical lens and an array ultrasonic transducer, can simultaneously obtain optical and ultrasonic images of a human body cavity, and overcomes the defect that the traditional endoscope can only observe the surface of the cavity and cannot obtain lesion information in the deep layer of cavity tissues. However, the number of signal channels of the array ultrasonic probe is large, the front end part of the ultrasonic endoscope is hard, the outer diameter of the endoscope conduit is thick, a patient is painful when the probe is inserted, and the probe is not suitable for the patient with heart, lung and brain diseases. Tether supersound capsule scope is a novel supersound scope of compriseing the scope casing of capsule shape and fine tether, compares in the thick pipe of supersound scope, and the tolerance that the equipment can be improved greatly to the tether structure. When the tethered ultrasonic capsule endoscope is used for examination, a patient orally takes the tethered ultrasonic capsule endoscope, and a doctor controls the ultrasonic capsule endoscope to stay at a suspected lesion position by pulling the tether so as to acquire detailed images, so that the diagnosis accuracy is improved.

Some human body cavities such as digestive tracts are long, doctors can easily miss detection only by manually operating the endoscope, and in addition, ultrasonic images directly acquired by the endoscope are two-dimensional sectional views, which are deficient in intuition and accuracy. The retracting device of the endoscopic equipment can pull out the tethered capsule endoscope from a human body at a constant speed, and the tethered capsule endoscope carries out ultrasonic imaging in the process of withdrawing from the body, so that a cross section diagram with accurate position information of a complete cavity can be acquired; on the other hand, the device provides a safe and stable endoscope withdrawing mode, and can avoid the situation that the moving direction of the endoscopic equipment is deviated due to improper force application in the withdrawing process, so that the endoscopic equipment collides with the cavity of a human body and damages the human body.

The driving device for withdrawing the catheter extending into the human body is available in the prior art, but the driving device is arranged in a mode of winding the catheter to achieve the purpose of withdrawing, and for the ultrasonic capsule endoscope with relatively thick cable and high rigidity, the cable is easy to damage by winding, and the withdrawing operation by the driving device is not feasible.

In summary, the tethered ultrasound capsule endoscope is usually retracted by manual operation, which has the disadvantages of easily injuring some parts of the body cavity, and easily causing missed inspection due to the uneven speed of manual traction, so a safer and more stable way needs to be found to solve the disadvantages. The driving device in the prior art adopts a mode of winding the guide pipe to achieve the purpose of withdrawing, and is not suitable for withdrawing the tether ultrasonic capsule endoscope.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to overcome the above-mentioned drawbacks of the prior art, the present invention provides a retracting device for endoscopic equipment, which has a simple structure and is stable in operation.

Specifically, the endoscopic equipment withdrawing device comprises a driving assembly, a transmission assembly and a roller assembly, wherein the roller assembly comprises at least two rollers; the driving assembly is connected with the transmission assembly, the transmission assembly is connected with the roller assemblies, and the two rollers are mutually matched to compress and pull a cable of the endoscopic equipment. When the endoscope device is used, the cable is arranged between the rollers and is adjusted to be tightly attached to the rollers, the driving assembly drives the transmission assembly connected with the driving assembly to move, meanwhile, the transmission assembly drives the roller assembly to move, and the cable is dragged through the friction force of the rollers, so that the endoscope device is withdrawn from the body of a patient at a constant speed. In some embodiments, there is a gap between the two rollers, preferably a gap of 0.5-4mm between the rollers.

In some embodiments, the transmission assembly includes a driving gear and a driven gear engaged with each other, the driving gear being connected to the driving assembly; the roller assembly comprises a first roller and a second roller, the driving gear is connected with the first roller, and the driven gear is connected with the second roller. Preferably, the diameters of the driving gear and the driven gear are equal, the meshing is stable during operation, the blocking is not easy to happen, and the transmission efficiency is high. Further, the endoscopic equipment withdrawing device further comprises a central shaft, the central shaft is arranged at the central position of the roller, and the transmission assembly and the roller are in pin joint with the central shaft. The coaxial rotation of the transmission assembly and the roller connected through the pin joint with the central shaft is realized, and the connection between the transmission assembly and the roller is more stable.

Further, the device also comprises an adjusting structure, and the adjusting structure is used for adjusting the distance between the rollers. The adjusting structure is controlled to move to drive the transmission assembly and the roller connected with the transmission assembly to move, the gap size of the roller can be adjusted to enable the cable to be placed into the gap more conveniently, and damage to the cable in the placing process is avoided. In some embodiments, the adjusting structure comprises a moving part and a knob, the moving part is connected with the central shaft of the roller, and the knob is sleeved outside the moving part. When the adjusting mechanism is used, the knob is rotated, the position of the knob is moved to drive the moving part to move, so that the adjusting structure moves along the straight line where the moving part is located, the driven gear and the idler wheel are moved to adjust the clearance of the idler wheel, operation is convenient, and accurate adjustment of the moving distance can be achieved through rotation of the knob.

In some embodiments, the apparatus further comprises a housing having a first region and a second region within the housing, the drive assembly being disposed in the first region, the drive assembly and the roller assembly being disposed in the second region, the second region including a fully open end and a partially open end that are oppositely located. The shell protects components arranged in the shell, and on the other hand, sundries can be prevented from falling into the motion structure to influence the operation of the retracting device of the endoscopic equipment. The fully-opened end is connected with a nip, connecting parts corresponding in position are arranged at the connecting positions of the fully-opened end and the nip respectively, and the two parts of the connecting parts are of detachable structures. The detachable connection mode enables the mouthpiece which needs to be in contact with the mouth of a patient to be taken down when not in use and to be replaced in time, is convenient for cleaning the mouthpiece and is beneficial to ensuring the use safety of the medical equipment. Preferably, the completely open end is provided with a first connecting portion, the seam is provided with a second connecting portion, the first connecting portion and the second connecting portion are of a buckle structure, and the first connecting portion extends into the second connecting portion and is clamped with the second connecting portion.

In conclusion, the endoscopic equipment withdrawing device provided by the utility model pulls the cable to withdraw the endoscopic equipment from the body of the patient at a constant speed through the friction force of the double rollers. The withdrawing process is carried out at a constant speed, and the endoscopic equipment can acquire a series of images with accurate position information in the withdrawing process, so that more accurate diagnosis basis can be provided for doctors. On the other hand, the device is safe and stable, and can avoid injury to certain parts of the body cavity due to improper force application compared with a manual withdrawal mode.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural view of a retracting device of an endoscopic apparatus of the present invention;

fig. 2 is another schematic structural view of the retracting device of the endoscopic apparatus of the present invention;

fig. 3 is a schematic view showing the overall configuration of the retracting device of the endoscopic apparatus in accordance with example 2;

fig. 4 is a schematic view showing a state of use of the endoscopic apparatus retracting device of the present invention.

Reference numerals:

1-a drive assembly; 21-a drive gear; 22-a driven gear; 31-a first roller; 32-a second roller; 102-a first shaft; 112-a second shaft; 4-a modulating structure; 41-a moving part; 42-a knob; 51-seaming; 52-straight passage; 61-a first connection; 62-a second connecting portion; 71-a first region; 72-a second region; 721-fully open end; 722-partially open end.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a withdrawing device for withdrawing endoscopic equipment with a cable extending into a patient body, which comprises a driving assembly, a transmission assembly and roller assemblies, wherein the driving assembly, the transmission assembly and the roller assemblies are connected, the driving assembly is connected with the transmission assembly, the transmission assembly is connected with at least two rollers, and a gap is formed between the two rollers. During the use, the cable is arranged in the gap of the roller and is adjusted to be tightly attached to the roller, the driving assembly drives the transmission assembly to move, meanwhile, the transmission assembly drives the roller to move, the cable is dragged through the friction force of the roller, and therefore the endoscopic equipment is withdrawn from the body of a patient at a constant speed.

The endoscopic equipment withdrawing device adopts a non-manual operation mode, drives the components of the integral device to operate through the driving assembly, and drags the cable through friction force, so that the endoscopic equipment with the cable is withdrawn from the body of a patient. In the following embodiments, the same is also applicable to endoscopic equipment by taking the example of retracting a tether ultrasound capsule endoscope, wherein the tether is also equivalent to a cable.

Example 1

Referring to the attached figure 1 of the specification, a structural schematic diagram of a retracting device of an endoscopic apparatus is shown. The driving assembly 1, the driving gear 21 and the first roller 31 are sequentially connected; the driven gear 22 is meshed and linked with the driving gear 21, and the second roller 32 is connected with the driven gear 22 and forms a gap for accommodating the tether with the first roller 31. Preferably, the diameters of the driving gear 21 and the driven gear 22 are equal, the meshing is stable during operation, the jamming is not easy to occur, and the transmission efficiency is high. Further, in order to form a gap between the rollers, the diameter of the connected first roller 31 is smaller than that of the driving gear 21, and the diameter of the second roller 32 is smaller than that of the driven gear 22; in order to realize the coaxial rotation of the gear and the roller, the driving gear 21 is in the same straight line with the central axis of the first roller, and the driven gear 22 is in the same straight line with the central axis of the second roller 32.

As for the connection manner between the gears and the rollers, the connection between the driving gear 21 and the first roller 31, and the connection between the driven gear 22 and the second roller 32 may be directly or indirectly connected, for example: the gear is directly and fixedly connected with the roller, and the driving assembly 1 is connected with a driving gear 21 through a transmission shaft; or a central hole is arranged at the central position of the gear and the roller, the central shaft is arranged in the central hole, the driving gear 21 and the first roller 31 are in pin joint with the same central shaft, the driving assembly 1 is connected with the central shaft, and the driven gear 22 and the second roller 32 are in pin joint with the same central shaft. In order to prevent insufficient friction between the tether and the roller from affecting the stability of the tether withdrawal, the outer surface of the roller has roughness. Preferably, the roughness Ra of the outer surface of the roller is greater than 0.2 μm. In particular, the roughness of the roller surface can be achieved in different ways, for example: the surface of the roller is provided with grains, and the surface of the roller is covered with rough materials and the like.

When the tethered ultrasonic capsule endoscopy is carried out, the tether is placed in the gap between the first roller 31 and the second roller 32 and is tightly attached to the first roller 31 and the second roller 32. Starting the driving assembly 1, the driving assembly 1 can drive the driving gear 21 to rotate, the driving gear 21 drives the driven gear 22 to move, and simultaneously the driving gear 21 and the driven gear 22 drive the first roller 31 and the second roller 32 to rotate. For example, a rotating motor is adopted as the driving assembly 1, the rotating direction of the rotating motor is set to rotate towards the withdrawing direction of the tether, the driving gear 21 is driven to rotate between the rotating motors, and the first roller 31 and the second roller 32 drag the tether towards the withdrawing direction in the moving process, so that the tether ultrasonic capsule endoscope is withdrawn from the body of the patient at a constant speed. During the withdrawing process, the tethered ultrasonic capsule endoscope performs scanning imaging, because the withdrawing process is performed at a constant speed, a series of ultrasonic sectional views with accurate position information can be acquired, and imaging software can reconstruct the ultrasonic sectional views into ultrasonic three-dimensional imaging images according to the position information of the ultrasonic sectional views, so that a more intuitive and accurate diagnosis basis is provided for doctors. On the other hand, the withdrawing device provided by the retracting device of the endoscopic equipment is safe and stable, and compared with a manual withdrawing mode, the retracting device can avoid the cleaning that the moving direction of the endoscopic equipment is deviated due to improper force application so as to be directly contacted with the body cavity and damage is caused to certain parts of the body cavity when the endoscopic equipment moves.

Referring to the attached figure 2 in the specification, another structural schematic diagram of the retracting device of the endoscopic equipment is shown. The adjustment structure 4 is arranged for adjusting the size of the gap between the first roller 31 and the second roller 32, preferably 0.5-4 mm. The adjustment structure 4 comprises a mobile portion able to move in a direction perpendicular to the direction of withdrawal of the tether on the plane of the transmission assembly. When the tether is placed, the moving part enlarges the gap size, then the tether is placed in the gap size, and then the tether is adjusted to be tightly attached to the first roller 31 and the second roller 32. The moving part can have different specific structures and can be a moving platform connected with a driving gear 21 or a driven gear 22, the gear can rotate relative to the moving platform, and the size of the gap between the rollers can be adjusted by controlling the position of the moving platform. Or the central shaft connecting the driving gear 21 and the first roller 31 to be in pin joint, or the central shaft connecting the driven gear 22 and the second roller 32 to be in pin joint, and the position of the central shaft is moved to drive the gears and the rollers to move so as to realize the adjustment of the gap size between the rollers. Alternatively, the moving part may further include two portions respectively connecting the two central shafts. Preferably, a limit structure is further provided to limit the moving distance of the moving part, so that the transmission assembly is always kept in an engaged state in the moving process of the moving part, and the driving gear 21 and the driven gear 22 are prevented from being completely separated and not easy to be engaged again. On the other hand, the adjustment distance of the movement limiting part can be used for limiting the distance between the driving gear 21 and the driven gear 22, and the gears are prevented from being damaged due to collision when being moved. The gap between the first roller 31 and the second roller 32 is adjustable, so that the tether can be more conveniently placed in the gap between the first roller 31 and the second roller 32, and damage to the tether during placement is avoided. Further, it is possible to avoid the failure of the retracting operation due to a difference in the tether size that may occur.

Example 2

Referring to fig. 3 and 4, the retracting device of the endoscopic apparatus of the present embodiment includes a motor, a rotating shaft, a transmission assembly, a roller assembly, an adjusting structure and a housing enclosing the above components. Specifically, the space inside the housing is divided into two regions, the motor is disposed as the driving assembly 1 in the first region 71, and the rotating shaft, the transmission assembly, the roller assembly, and the like are disposed in the second region 72. The second section 72 has a fully open end 721 and a partially open end 722 that are positioned opposite one another, one end of the first section 71 is attached to the side of the partially open end 722, and the drive assembly and roller assembly are positioned at the partially open end 722. Specifically, the transmission assembly includes a driving gear 21 and a driven gear 22, the driving gear 21 and the first roller 31 are disposed on the first rotating shaft 102 and are both pinned with the first rotating shaft 102, a through hole corresponding to the first rotating shaft 102 is disposed at a separation position of two regions on the housing, and the first rotating shaft 102 passes through the through hole and is connected with the motor. The driven gear 22 is engaged with the driving gear 21, the driven gear 22 is fixedly connected with the second roller 32, the hollow part of the center positions of the first roller 31 and the second roller 32 is provided with a second rotating shaft 112, and a gap is formed between the first roller 31 and the second roller 32. In the present embodiment, the diameter of the driven gear 22 is smaller than that of the driving gear 21, so that the driving gear 21 can easily drive the driven gear 22 to rotate, and accordingly the size of the second roller 32 is slightly smaller than that of the first roller 31.

The completely open end 721 of the second area 72 is detachably connected with the mouthpiece 51, the connecting part of the completely open end 721 and the mouthpiece 51 is respectively provided with a first connecting part 61 and a second connecting part 62 corresponding in position, and the first connecting part 61 and the second connecting part 62 form a detachable structure. Specifically, there may be a plurality of specific connection manners, for example, the first connection portion 61 and the second connection portion 62 are two plate members, and are connected by bolts and nuts. In this embodiment, the first connecting portion 61 and the second connecting portion 62 form a buckle structure, wherein the first connecting portion 61 is a buckle, the second connecting portion 62 is a connecting member, and the buckle extends into the connecting member and is clamped with the connecting member. The detachable connection mode enables the mouthpiece 51 which needs to contact the mouth of the patient to be taken down when not in use and to be replaced in time, thereby being convenient for cleaning the mouthpiece 51 and being beneficial to ensuring the use safety of the medical equipment. The housing is internally provided with a linear channel 52 penetrating through the housing, and the linear channel 52 penetrates out of the seam 51 through the gap between the first roller 31 and the second roller 32 to a partially open end 722 of the housing for the tether to pass through.

In this embodiment, the adjusting structure 4 includes a moving portion 41 and a knob 42, one end of the moving portion 41 is a box structure, and is rotatably connected to the second rotating shaft 112 and penetrates through the two ends of the driven gear 22 and the second roller 32, a T-shaped moving rod is disposed on a side wall of the box structure, the moving rod is partially disposed in the housing and partially exposed out of the housing, the knob 42 exposed out of the housing is disposed outside the moving rod, and a limit groove is disposed inside the knob 42 and opposite to the moving rod. When the knob 42 is rotated in use, the movement of the knob 42 drives the moving rod to move, so that the adjusting structure 4 moves along the straight line of the moving rod, and the driven gear 22 and the second roller 32 are moved to adjust the distance between the first roller 31 and the second roller 32. The adjusting structure 4 of this embodiment is convenient to operate, and the adjusting structure 4 of this embodiment can realize the accurate adjustment of the displacement distance through the rotation of the knob. Furthermore, the moving distance of the adjusting structure is limited by the length of the thread on the knob, so that the driving gear 21 and the driven gear 22 are prevented from being separated and not easy to be meshed again, and on the other hand, the gears are prevented from being collided and damaged by applying excessive force during adjustment.

In some embodiments, a switch structure is disposed on the housing to facilitate opening and closing of the housing. Open the casing and adjust when adjusting the clearance between the gyro wheel, can observe the regulation condition more directly perceivedly. In other time, the shell is closed to protect the structure arranged in the shell, and on the other hand, sundries can be prevented from falling into the moving structure to influence the operation of the retracting device of the endoscopic equipment.

In some embodiments, there may be a plurality of gears, rollers, and motors. For example, the number of the gears and the rollers is equal and even, the combination of the gears, the rollers and the motor as described in embodiment 1 is a set of moving structures, a plurality of sets of moving structures are arranged in parallel in the housing, the intervals between two adjacent sets of moving structures are equal, and the rotating speeds of the plurality of transmission assemblies are the same, so that the tether is stressed uniformly and moves more stably. The driving gear and the driven gear on two sides of the linear channel 52 are meshed in pairs, and the roller is adjusted to be tightly attached to the tether. Under the action of the multiple groups of motion structures, the retraction device of the endoscopic equipment can operate more smoothly.

Or the number of the gears in the retracting device of the endoscopic equipment is odd, and the number of the rollers is less than that of the gears. For example, the retracting device of the endoscopic apparatus includes three gears, two motors and two rollers, wherein a first driving gear and a second driving gear are engaged with each other and are respectively connected with the motors, a driven gear is engaged with the first driving gear, the first driving gear and the driven gear are respectively connected with the rollers, and a gap for accommodating the tether to pass through is formed between the rollers. The two motors can both realize the operation of the driving device, if one motor fails to start, the other motor can be started to drive the gear to move so as to prevent the condition that the retraction device of the endoscopic equipment cannot be used.

In summary, the utility model provides an endoscopic device retracting device which has a simple structure and can operate stably, and the endoscopic device is retracted from the body of a patient at a constant speed by driving the rollers through the driving assembly and dragging the cable through the friction force of the double rollers. The withdrawing process is carried out at a constant speed, so that the endoscopic equipment can acquire a series of images with accurate position information in the withdrawing process, and more accurate diagnosis basis can be provided for doctors. On the other hand, compared with a manual withdrawal mode, the device can avoid the phenomenon that the endoscopic equipment moves in a direction deviated due to improper force application so as to directly contact with the body cavity, and certain parts of the body cavity are damaged in the moving process.

The above-mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and various modifications other than the above-mentioned embodiments may be made, and the technical features of the above-mentioned embodiments may be combined with each other, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An endoscopic equipment withdrawing device is characterized by comprising a driving assembly, a transmission assembly and a roller assembly, wherein the roller assembly comprises at least two rollers;

the driving assembly is connected with the transmission assembly, the transmission assembly is connected with the roller assemblies, and the two rollers are mutually matched to compress and pull a cable of the endoscopic equipment.

2. The endoscopic apparatus retraction device according to claim 1, wherein the transmission assembly comprises a driving gear and a driven gear in mesh, the driving gear being connected to the driving assembly;

the roller assembly comprises a first roller and a second roller, the driving gear is connected with the first roller, and the driven gear is connected with the second roller.

3. The endoscopic apparatus retraction device according to claim 1, further comprising adjustment structure for adjusting the distance between the rollers.

4. The endoscopic apparatus retracting device according to claim 3, wherein the adjusting structure comprises a moving portion connected to a central shaft of the roller and a knob provided around the moving portion.

5. The endoscopic apparatus retraction device according to any one of claims 1 to 4, further comprising a housing having a first region within which the drive assembly is disposed and a second region within which the transmission assembly and the roller assembly are disposed, the second region comprising a fully open end and a partially open end which are located opposite one another.

6. The endoscopic apparatus retracting device according to claim 5, wherein a mouthpiece is connected to the fully open end, connecting portions are respectively provided at the connecting portions of the fully open end and the mouthpiece, and the connecting portions are detachable.

7. The endoscopic apparatus retracting device according to claim 6, wherein the fully open end is provided with a first connecting portion, the mouthpiece is provided with a second connecting portion, the first connecting portion and the second connecting portion are of a snap structure, and the first connecting portion protrudes into the second connecting portion to be clamped with the second connecting portion.

8. The endoscopic apparatus retraction device according to claim 1, further comprising a central shaft, wherein a central hole is provided at a central position of the roller, the central shaft passes through the central hole, and the transmission assembly is pinned with the roller to the central shaft.

9. The endoscopic apparatus retracting device according to any one of claims 1 to 4, wherein the two rollers have a gap therebetween, the gap being 0.5 to 4 mm.

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