An insertion portion and an endoscope

Abstract

The present invention discloses an insertion portion and an endoscope, belonging to the technical field of endoscopes. The insertion portion includes an instrument tube and a driving member. The instrument tube extends from the proximal end of the insertion portion to the distal end of the insertion portion. The driving member is mounted on the peripheral wall of the instrument tube. The driving member is used to controllably drive the wall of the instrument tube to deform along the radial direction of the instrument tube, so as to change the inner diameter size and / or shape of a part of the instrument tube connected to the driving member. The instrument tube includes a fixed area, and the fixed area is fixedly matched with the front end seat of the insertion portion. The driving member is located on the proximal side of the fixed area. In this application, by controlling the driving member, the deformation of the wall of the instrument tube is controlled, so as to change the inner diameter size and / or shape of the instrument tube, adjust the pressure of the water flow output from the instrument tube, and control the water flow in the instrument tube to rapidly increase and decrease the pressure within a short time to form a pulse. The pulsed water flow can disturb the liquid in the renal calyx, so as to facilitate the suction of the negative pressure aspiration sheath and improve the stone removal effect.

Description

Technical Field

[0001] The present invention relates to the technical field of endoscopes, and particularly to an insertion part and an endoscope. Background Art

[0002] An endoscope is a commonly used medical device, which is an inspection device that can directly enter the natural cavities of the human body and can provide sufficient diagnostic information for doctors to treat diseases. The endoscope includes an insertion part, and the insertion part can enter the human body through the body cavity or surgical incision.

[0003] When using an endoscope and a negative pressure suction sheath to treat stones in the renal calyx, a negative pressure suction channel can be established by using the negative pressure suction sheath to cooperate with the endoscope to establish a stable water circulation and timely discharge the stones after being broken by a laser. For the fine gravel deposited on the inner wall of the renal calyx, the water flow ejected by the endoscope is often used to impact the gravel, so that the gravel can be carried up by the water flow and then smoothly sucked away, thereby improving the stone removal efficiency. However, such a stone removal effect is still limited, especially for the gravel deposited in the lower calyx, and it is difficult to remove the stones completely. Summary of the Invention

[0004] The purpose of this application is to provide an insertion part and an endoscope to solve the above technical problems existing in the prior art.

[0005] This application is implemented as follows:

[0006] In a first aspect, an embodiment of this application provides an insertion part for use in an endoscope, including an instrument tube and a driving member. The instrument tube extends from the proximal end to the distal end of the insertion part; the driving member is installed on the peripheral wall of the instrument tube, and the driving member is used to controllably drive the wall of the instrument tube to deform in the radial direction of the instrument tube, so as to change the inner diameter size and / or shape of a part of the instrument tube connected to the driving member; the instrument tube includes a fixed area, and the fixed area is fixedly matched with the front end seat of the insertion part, and the driving member is located on the proximal side of the fixed area.

[0007] In a second aspect, an embodiment of this application provides an endoscope including the insertion part provided in the first aspect embodiment.

[0008] The technical solution provided by this application can achieve the following beneficial effects:

[0009] In the present application, a driving member is installed on the peripheral wall of the instrument tube. After being controlled, the driving member can drive the tube wall of the instrument tube to deform radially, so as to change the inner diameter size and / or shape of a part of the instrument tube corresponding to the driving member. By changing the inner diameter size and / or shape of the instrument tube, the pressure and flow state of the water flow output from the instrument tube are changed. By controlling the controlled frequency of the driving member, the inner diameter and / or shape of the instrument tube can be intermittently changed, so that the water flow rapidly increases and decreases pressure within a short period of time to form a pulse; the pulsed water flow can cause the liquid in the renal calyx to be disturbed, so that the stones and precipitates at the bottom of the renal calyx or close to the wall surface of the renal calyx can change positions, facilitating the suction of the negative pressure aspiration sheath, increasing the probability of the stones, precipitates, etc. being discharged out of the human body, and improving the stone removal effect; moreover, a fixed area is provided on the instrument tube, and the driving member is located on the proximal side of the fixed area. When the instrument tube deforms, the position of the fixed area will not be squeezed, and no obvious compressive deformation will occur or will occur basically, which can well maintain the connection and cooperation relationship between the fixed area and the front seat, and can prevent the liquid outside the insertion part from entering the inside of the insertion part through the gap generated by the deformation of the instrument tube or prevent the devices around the fixed area from being affected by the deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0011] Figure 1 is a schematic diagram of the overall structure of the insertion part provided by some embodiments of the present application;

[0012] Figure 2 is a partial cross-section of the insertion part provided by some embodiments of the present application Figure 1 ;

[0013] Figure 3 is a partial cross-section of the insertion part provided by some embodiments of the present application Figure 2 ;

[0014] Figure 4 is about Figure 3 detail view of part A;

[0015] Figure 5 is about Figure 3 detail view of part B;

[0016] Figure 6 is a partial cross-section of the insertion part provided by some embodiments of the present application Figure 3 ;

[0017] Figure 7 It is a detailed view of part C Figure 6 regarding

[0018] Figure 8 a schematic diagram showing the cooperation between the instrument tube and the driving member provided in some embodiments of the present application Figure 1 ;

[0019] Figure 9 a schematic diagram showing the cooperation between the instrument tube, the driving member and the limiting tube provided in some embodiments of the present application;

[0020] Figure 10 a schematic diagram showing the cooperation between the instrument tube and the driving member provided in some embodiments of the present application Figure 2 ;

[0021] Figure 11 a schematic diagram of the overall structure of the front-end seat provided in some embodiments of the present application;

[0022] Figure 12 a cross-sectional view of the front-end seat provided in some embodiments of the present application;

[0023] Figure 13 a schematic diagram of the structure of the instrument tube provided in some embodiments of the present application;

[0024] Figure 14 a schematic diagram of the structure of the endoscope provided in some embodiments of the present application Figure 1 ;

[0025] Figure 15 a schematic diagram of the structure of the endoscope provided in some embodiments of the present application Figure 2 ;

[0026] Figure 16 a cross-sectional view of the control component provided in some embodiments of the present application;

[0027] Figure 17 a schematic diagram of a partial structure of the control component provided in some embodiments of the present application.

[0028] In the figure: 10 - insertion part, 20 - endoscope handle, 100 - front-end seat, 110 - instrument channel, 120 - camera module mounting part, 200 - instrument tube, 210 - mounting groove, 300 - fixing part, 410 - driving member, 411 - piezoelectric sheet, 412 - airbag, 420 - control circuit, 421 - power line, 422 - air tube, 430 - adhesive layer, 500 - snake bone section, 600 - limiting tube, 710 - camera module, 720 - PCB, 800 - control component, 810 - liquid channel, 820 - impeller, 830 - button, 840 - rotating shaft, 850 - cam, 860 - control airbag, 870 - intermediate part, 880 - housing. Detailed Description of the Invention

[0029] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other implementation manners obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope protected by the present invention.

[0030] In the specification and claims, "and / or" means at least one of the connected objects. The character " / ", generally, indicates that the associated objects before and after are in an "or" relationship.

[0031] In the embodiments of the present application, "proximal end" and "distal end" refer to the positions of the endoscope and its accessories relative to the user in the usage environment. Among them, the end closer to the user is designated as the "proximal end", and the end farther from the user is designated as the "distal end".

[0032] An insertion portion 10 is provided in an embodiment of the present application. Refer to Figures 1 to 7 As shown, the insertion portion 10 is applied to an endoscope. The insertion portion 10 is a part of the endoscope. During the use of the endoscope, the insertion portion 10 extends into the human body through the natural cavity of the human body or a surgical incision. At the distal end of the insertion portion 10, components such as a camera module 710 are provided. The image information inside the human body is obtained through the camera module 710, which is convenient for doctors to judge the lesion site and select appropriate diagnosis and treatment means.

[0033] The insertion portion 10 includes an instrument tube 200. The instrument tube 200 extends from the proximal end of the insertion portion 10 to the distal end of the insertion portion 10. The inner space of the instrument tube 200 forms a surgical channel. During the use of the endoscope, medical devices such as a laser optical fiber enter the human body through the instrument tube 200. At the same time, liquids can also be injected through the instrument tube 200.

[0034] The insertion portion 10 further includes a driving member 410. The driving member 410 is installed on the peripheral wall of the instrument tube 200. The driving member 410 is used to controllably drive the wall of the instrument tube 200 to deform along the radial direction of the instrument tube 200, so as to change the inner diameter size and / or shape of a part of the instrument tube 200 connected to the driving member 410. The driving member 410 can receive an external signal. After receiving the external signal, the position and / or shape of the driving member 410 will change. Since the driving member 410 is connected to the peripheral wall of the instrument tube 200, the driving member 410 will drive the wall of a part of the instrument tube 200 connected to the driving member 410 to deform. After the wall of the instrument tube 200 deforms, the inner diameter size and / or shape of this part of the instrument tube 200 will change.

[0035] In the specific use of the endoscope, the instrument tube 200 can serve as the liquid channel 810, and water flow is injected into the human body through the instrument tube 200. The inner diameter and / or shape of the instrument tube 200 change, causing the pressure of the water flow output by the instrument tube 200 to change. By controlling the controlled frequency of the driving member 410, the inner diameter and / or shape of the instrument tube 200 can be changed intermittently and regularly, so that the pressure of the water flow output by the instrument tube 200 increases and decreases regularly in a short period of time, thereby forming a pulsed water flow.

[0036] The pulsed water flow can disturb the liquid, stones and precipitates accumulated in the renal calyces, especially the lower calyces, so that the stones and precipitates located at the bottom of the lower calyces or close to the wall surface of the lower calyces can change their positions, facilitating suction by the negative pressure suction sheath, and increasing the probability of stones, precipitates, etc. being discharged out of the human body, solving the problems of unsatisfactory lithotripsy and stone discharge effects in the prior art.

[0037] When the inner diameter and / or shape of the instrument tube 200 change, the flow state of the water flow output by the instrument tube 200 can also change. The flow state of the water flow includes changes in the flow velocity and flow direction of the water flow. After the flow state of the water flow changes, the impact effect on the liquid in the renal calyces will also change, thereby disturbing the liquid, stones or precipitates in the renal calyces, making it more convenient for the negative pressure suction sheath to perform suction.

[0038] The driving member 410 can receive an external signal and deform and / or move its position according to the indication of the external signal, thereby driving the wall of the instrument tube 200 connected thereto to deform. In some embodiments, the driving member 410 can receive the signal through wireless transmission. The structure of wireless transmission is more concise, unnecessary data lines can be omitted, and the installation space inside the insertion portion 10 can be saved. In other embodiments, the driving member 410 can also receive the signal through wired transmission. A control line 420 is connected to the driving member 410, and the control line 420 can be arranged along the extension direction of the instrument tube 200 to save the installation space inside the insertion portion 10 as much as possible. Wired transmission of signals is more stable, which can make the change of the shape and / or inner diameter size of the instrument tube 200 more accurate and improve the control strength of the pulsed water flow.

[0039] When the wall of the instrument tube 200 deforms under the drive of the driving member 410, when the driving member 410 moves and / or deforms towards the middle of the instrument tube 200, the wall of the instrument tube 200 moves towards its middle, the inner diameter size of the instrument tube 200 becomes smaller, and the water flow pressure output by the instrument tube 200 increases; when the driving member 410 moves and / or deforms away from the middle of the instrument tube 200, the wall of the instrument tube 200 moves towards a position away from its middle, the inner diameter size of the instrument tube 200 increases, and the water flow pressure output by the instrument tube 200 decreases.

[0040] During the deformation process of the instrument tube 200, the inner diameter of the instrument tube 200 increases, which can indicate that the tube wall of the instrument tube 200 gradually recovers from the position close to the middle to the position before deformation, and the maximum value of the inner diameter of the instrument tube 200 is the inner diameter of the instrument tube 200 before deformation. In other embodiments, the inner diameter of the instrument tube 200 increases, which can also indicate that the tube wall of the instrument tube 200 moves and / or deforms directly from the undeformed position toward the direction away from the middle, and the maximum value of the inner diameter of the instrument tube 200 is greater than the inner diameter of the instrument tube 200 before deformation. In this case, the variation range of the inner diameter of the instrument tube 200 is large, thereby increasing the pressure variation range of the water flow output by the instrument tube 200, improving the effect of water flow disturbance on the accumulation of sediment and stones in the renal calyx to a certain extent, and further improving the stone removal effect.

[0041] The instrument tube 200 is located inside the insertion part 10. In addition to the instrument tube 200, other components are installed inside the insertion part 10, such as data transmission lines, etc. The inside of the insertion part 10 needs to be kept dry and sealed to prevent the liquid in the human body cavity from entering the insertion part 10 during the insertion of the insertion part 10 into the human body, thereby affecting the normal use of the internal devices of the insertion part 10.

[0042] When in use, the driving member 410 drives the tube wall of the instrument tube 200 to deform and / or move, causing the instrument tube 200 to deviate from its original position. In some embodiments of the present application, the instrument tube 200 includes a fixed area, and the fixed area is fixedly matched with the front end seat 100 of the insertion part 10. Even if the instrument tube 200 is deformed and / or moved, the position of the fixed area remains unchanged and is always sealed and fixed with the front end seat 100. There is no gap between the instrument tube 200 and the front end seat 100 through which liquid can pass, thereby preventing liquid outside the insertion part 10 from entering the insertion part 10 through the gap between the instrument tube 200 and the front end seat 100.

[0043] The front end seat 100 is a part of the insertion part 10, located at the farthest end of the insertion part 10, and can directly contact the human body tissue. The camera module 710, PCB 720 and other components are fixed to the front end seat 100. The instrument channel 110 is directly fixed to the front end seat 100. Figure 11 and Figure 12 As shown, the front end seat 100 is provided with an instrument channel 110, and the instrument tube 200 is connected to the external environment through the instrument channel 110. There are many ways for the instrument tube 200 to communicate with the external environment. Figure 3 As shown, the instrument tube 200 is disposed in the instrument channel 110, and the instrument tube 200 passes through the front end seat 100 to achieve communication with the external environment. Figure 6 and Figure 7As shown, the proximal end of the instrument tube 200 is docked with the distal end of the instrument channel 110, and the inside of the instrument tube 200 is docked and communicated with the inside of the instrument channel 110.

[0044] The fixation between the fixation area of the instrument tube 200 and the front end seat 100 can be adhesive fixation, or expansion joint fixation, interference fit and other fixation methods, and no specific limitation is made in the embodiments provided in the present application. In some embodiments of the present application, with reference to Figure 2 、 Figure 3 、 Figures 5 to 7 As shown, a fixing member 300 is provided between the instrument tube 200 and the front end seat 100. The fixing member 300 is of an annular structure and is sleeved outside the instrument tube 200. An adhesive fixing method can be selected between the fixing member 300 and the instrument tube 200 and the front end seat 100.

[0045] The driving member 410 is located on the proximal side of the fixation area to prevent the driving member 410 from contacting the liquid in the environment where the insertion part 10 is located, which may affect the normal use of the driving member 410. In some preferred embodiments, the fixation area is of an annular structure, and the annular structure can seal the gap between the instrument tube 200 and the front end seat 100 in the circumferential direction of the instrument tube 200, further improving the sealing effect inside the insertion part 10.

[0046] The instrument tube 200 needs to be made of a deformable material to ensure that the instrument tube 200 can be deformed smoothly under the drive of the driving member 410. In some preferred embodiments, the fixation area of the instrument tube 200 can be additionally reinforced to improve the connection stability between the instrument tube 200 and the front end seat 100.

[0047] The instrument tube 200 deforms and / or moves under the drive of the driving member 410. The instrument tube 200 is installed inside the insertion part 10 and is fixedly connected to the front end seat 100. During the movement and / or deformation of the instrument tube 200, the whole instrument tube 200 is affected and vibrations will occur in most cases. The closer the tube wall of the instrument tube 200 is to the driving member 410, the more obvious the vibration is. In some embodiments of the present application, the driving member 410 is located on the proximal side of the camera module mounting part 120, so that the driving member 410 is as far away from the camera module 710 as possible. In the case where the instrument tube 200 vibrates during the operation of the driving member 410, the influence of the vibration of the instrument tube 200 on the camera module 710 can be minimized.

[0048] The camera module mounting part 120 is arranged on the front end seat 100, with reference to Figure 11 and Figure 12 As shown. The camera module 710 is installed on the camera module mounting part 120.

[0049] The driving member 410 is located on the proximal side of the camera module mounting portion 120. On the one hand, it increases the distance between the camera module 710 and the driving member 410, and weakens the influence of the vibration of the instrument tube 200 on the camera module 710 in terms of space. On the other hand, it avoids the camera module 710 and the driving member 410 being located at the same radial position. During the operation of the driving member 410, there will be movement and / or deformation of its position. If the camera module 710 and the driving member 410 are in the same radial position, the driving member 410 may touch the front end seat 100 during operation, resulting in vibration of the front end seat 100 and affecting the imaging quality of the camera module 710. The smaller the influence of the instrument tube 200 on the camera module 710, the more stable the position of the camera module 710 and the better the imaging quality.

[0050] The camera module mounting portion 120 represents the mounting portion of the camera module 710 on the front end seat 100. In some embodiments, the camera module mounting portion 120 may be a groove structure located inside the front end seat 100, and the camera module 710 is directly mounted inside the front end seat 100. In other embodiments, the circumferential side wall of the front end seat 100 is recessed, and the camera module mounting portion 120 is this recess, and the camera module 710 is directly mounted at this recessed position.

[0051] The insertion portion 10 further includes a snake bone segment 500, which is formed by sequentially connecting a plurality of snake bones, and the adjacent two snake bones are rotatably connected. The snake bone segment 500 is mounted on the proximal side of the front end seat 100, refer to Figure 1 and Figure 2 as shown. The instrument tube 200 passes through the snake bone segment 500, and the driving member 410 is mounted on the peripheral wall of the corresponding part of the instrument tube 200 of the snake bone segment 500, refer to Figure 6 as shown. In the drawings, in order to make the drawings clearer and highlight the inventive points, the snake bone segment 500 is only simply illustrated and not all the lines are drawn. The driving member 410 is far from the front end seat 100, further avoiding the driving member 410 causing vibration of the instrument tube 200 and affecting the imaging quality of the camera module 710. At the same time, even if the driving member 410 drives the instrument tube 200 to vibrate, which will cause the snake bone segment 500 to vibrate, but the snake bone segment 500 and the front end seat 100 are two components, which can further reduce the vibration effect transmitted to the front end seat 100.

[0052] The snake bone segment 500 includes a snake bone first section and ordinary snake bones. The snake bone first section is located at the farthest end of the snake bone segment 500 and is connected to the front end seat 100. In some preferred embodiments, the driving member 410 is mounted on the peripheral wall of the corresponding part of the instrument tube 200 of the snake bone first section. While reducing the vibration influence of the movement and / or deformation of the driving member 410 on the camera module 710, the driving member 410 is made to be as close as possible to the distal end of the insertion portion 10, so as to maintain a strong pulse effect of the water flow output from the insertion portion 10.

[0053] The part of the instrument tube 200 corresponding to the snake bone segment 500 refers to the part of the instrument tube 200 passing through the snake bone segment 500. Similarly, the instrument tube 200 corresponding to the first snake bone segment refers to the part of the instrument tube 200 passing through the first snake bone segment.

[0054] The snake bone segment 500 is generally an active bending segment and can actively bend under the pulling of the traction rope, facilitating the insertion part 10 to enter the human body cavity. The insertion part 10 further includes a passive bending segment, and the passive bending segment is installed on the proximal side of the active bending segment. In addition, to ensure the sealing and dryness inside the insertion part 10, components such as a skin are wrapped outside the insertion part 10 to isolate external influences, and the skin is not shown in the drawings provided in the embodiments of the present application.

[0055] The circumferential wall of the instrument tube 200 is deformed by the driving member 410 to change the inner diameter size and / or shape of the instrument tube 200. In some embodiments of the present application, the insertion part 10 includes at least one set of driving member groups, and each driving member group includes two driving members 410 located at both radial ends of the instrument tube 200. Refer to Figures 8 to 9 As shown, the two corresponding driving members 410 can synchronously approach or move away from the axis of the instrument tube 200, increasing the deformation amount of the wall of the instrument tube 200, thereby increasing the variation range of the water flow pressure inside the instrument tube 200, improving the disturbance ability of the water flow output from the instrument tube 200, and improving the stone expulsion effect.

[0056] The two corresponding driving members 410 act on the wall of the instrument tube 200 synchronously. When the two driving members 410 synchronously approach the axis of the instrument tube 200, the inner diameter size of this part of the instrument tube 200 decreases; when the two driving members 410 synchronously move away from the axis of the instrument tube 200, the inner diameter size of this part of the instrument tube 200 increases.

[0057] In some preferred embodiments, the insertion part 10 includes at least two sets of driving member groups arranged axially along the instrument tube 200. Refer to Figure 8 and Figure 10 As shown, the deformable length on the instrument tube 200 is increased, thereby improving the pulse effect of the water flow output from the instrument tube 200. Moreover, in any one of the above axially arranged driving member groups, the gap formed between two adjacent driving members 410 is correspondingly arranged with one of the driving members 410 in the driving member group axially adjacent to this driving member group. It can be understood that the two ends of the driving member 410 axially correspond to the gaps formed by two driving members 410 in other driving member groups, such that the deformation directions of the walls of the instrument tube 200 corresponding to two adjacent driving member groups in the axial direction of the instrument tube 200 are different, improving the disturbance performance of the water flow inside the instrument tube 200.

[0058] Further preferably, at the same axial position of the instrument tube 200, two sets of driving member groups can be arranged in a cross pattern simultaneously. Refer toFigure 8 and Figure 10 As shown, in the same circumferential direction of the instrument tube 200, there are four uniformly distributed driving members 410. The four driving members 410 belong to two groups of driving member groups, which increases the deformation amount of the tube wall of the instrument tube 200. In some specific embodiments, the two groups of driving member groups can be controlled to run intermittently. During the process of the driving members 410 in one group of driving member groups approaching each other, the driving members 410 in the other group of driving member groups move away from each other. In this way, the final inner diameter size of the instrument tube 200 can be kept unchanged, only the shape changes.

[0059] As a component for driving the deformation of the instrument tube 200, the driving member 410 itself can move and / or deform. Since the driving member 410 is fixed to the tube wall of the instrument tube 200, during the movement of the driving member 410, the tube wall of the instrument tube 200 connected to the driving member 410 follows the movement of the driving member 410 and deforms; during the deformation of the driving member 410, the tube wall of the instrument tube 200 connected to the driving member 410 deforms with the deformation of the driving member 410.

[0060] In some preferred embodiments, referring to Figure 9 as shown, the insertion part 10 further includes a limiting tube 600. The limiting tube 600 is sleeved outside the instrument tube 200. The driving member 410 is located between the limiting tube 600 and the instrument tube 200. The stiffness of the limiting tube 600 is greater than that of the instrument tube 200. The deformation range of the driving member 410 is limited within the inner space of the limiting tube 600.

[0061] Inside the insertion part 10, in addition to installing the instrument tube 200, other pipelines are also installed, such as towing ropes, data transmission lines, etc. Generally, the components inside the insertion part 10 are not installed too compactly to avoid the situation where the insertion part 10 cannot be bent normally. When the driving member 410 deforms, due to a certain space around the driving member 410, the driving member 410 may deform towards other free spaces inside the insertion part 10. This not only reduces the deformation of the instrument tube 200, but also squeezes other components inside the insertion part 10, which is not conducive to use.

[0062] In response to this, some embodiments of the present application set the limiting tube 600 to limit the deformation space of the driving member 410, so that the driving member 410 can smoothly squeeze the tube wall of the instrument tube 200. Moreover, the stiffness of the limiting tube 600 is relatively large. Compared with the limiting tube 600, the instrument tube 200 is more likely to deform, making it easier for the driving member 410 to drive the deformation of the instrument tube 200, and increasing the deformation amount of the instrument tube 200 to a certain extent.

[0063] In some embodiments of the present application, the driving member 410 may include a piezoelectric sheet 411, and a power line 421 is also connected to the piezoelectric sheet 411. The power line 421 is used to transmit an electrical signal to the piezoelectric sheet 411, thereby causing the piezoelectric sheet 411 to deform. When the driving member 410 includes the piezoelectric sheet 411, the piezoelectric sheet 411 is controlled by wire. The control line 420 includes the power line 421, and the power line 421 is one of the control lines 420. The power line 421 is used to transmit power. The piezoelectric sheet 411 is a thin sheet made of piezoelectric material, and its working principle is based on the piezoelectric effect. When an electric field is applied to the piezoelectric material, the piezoelectric material will generate deformation, which is called the inverse piezoelectric effect. When an external voltage is applied to the piezoelectric sheet 411, the piezoelectric sheet 411 will undergo obvious mechanical deformation according to the magnitude and frequency of the voltage, converting electrical energy into mechanical energy.

[0064] The piezoelectric sheet 411 after being energized and deformed can drive the instrument tube 200 to deform, thereby changing the inner diameter size and / or shape of the instrument tube 200. By controlling the magnitude and frequency of the voltage of the piezoelectric sheet 411, the deformation direction of the piezoelectric sheet 411 can be controlled, increasing or decreasing the inner diameter size of the instrument tube 200. When a plurality of piezoelectric sheets 411 are installed outside the instrument tube 200, the piezoelectric sheets 411 can be connected in series or in parallel. In some embodiments, the power line 421 is selected as a twisted pair wire.

[0065] It should be noted that if different piezoelectric sheets 411 need to be controlled to deform in different directions, different piezoelectric sheets 411 need to be connected to different power lines 421. In addition, since the piezoelectric sheet 411 will deform, the connection position between the power line 421 and the piezoelectric sheet 411 needs to be strengthened, and glue can be additionally used for fixation. Refer to Figure 4 and Figure 8 As shown, a glue layer 430 is provided at the connection position between the power line 421 and the piezoelectric sheet 411.

[0066] The power line 421 and the instrument tube 200 are jointly installed inside the insertion portion 10, and the power line 421 extends from the proximal end of the insertion portion 10 to the position of the driving member 410.

[0067] In some preferred embodiments, an installation groove 210 is further provided on the outer wall surface of the instrument tube 200. Refer to Figure 13As shown, the installation groove 210 is used to install the piezoelectric sheet 411. The installation groove 210 can play a positioning role, facilitating the assembler to determine the installation position of the piezoelectric sheet 411 and improving the assembly efficiency. At the same time, the piezoelectric sheet 411 is located in the installation groove 210. In the radial direction of the instrument tube 200, the space occupied by the piezoelectric sheet 411 is reduced, which can save the radial space of the instrument tube 200 and reserve more space for the installation and movement of other components inside the insertion portion 10. Additionally, since the installation groove 210 is provided on the tube wall of the instrument tube 200, the tube wall of the instrument tube 200 becomes thinner, and the stiffness of the tube wall of the instrument tube 200 connected to the piezoelectric sheet 411 is reduced, making it easier to deform under the drive of the piezoelectric sheet 411.

[0068] Further preferably, an additional pipe section is selected to install the piezoelectric sheet 411. During the assembly of the insertion portion 10, the pipe section equipped with the piezoelectric sheet 411 is directly butted and connected to another pipe section to form the instrument tube 200. By pre-installing the piezoelectric sheet 411 in advance, only the two pipe sections need to be butted and connected subsequently, which can improve the assembly efficiency of the insertion portion 10.

[0069] In some other embodiments of the present application, the driving member 410 can also be selected to use a magnetic material. By controlling the driving member 410 externally, the driving member 410 is moved to drive the instrument tube 200 to deform.

[0070] In some embodiments of the present application, the driving member 410 includes an airbag 412. The airbag 412 is connected to an air pipe 422. The air pipe 422 is in communication with the airbag 412. The air pipe 422 is used to deliver gas to the airbag 412, and the wall of the instrument tube 200 is driven to deform by driving the airbag 412 to expand. When the driving member 410 includes the airbag 412, the driving member 410 adopts a wired control. The control line 420 includes the air pipe 422, and the air pipe 422 is in communication with the airbag 412 to deliver gas.

[0071] Reference Figure 10 As shown, the airbag 412 is fixed outside the instrument tube 200. Each airbag 412 can be connected to an air pipe 422 to improve the inflation efficiency of the airbag 412, thereby increasing the inflation and deflation speed of the airbag 412. By inflating the airbag 412, the airbag 412 expands. After the airbag 412 expands, it will squeeze the instrument tube 200, thereby changing the inner diameter size and / or shape of the instrument tube 200. During the deflation process of the airbag 412, the airbag 412 gradually becomes smaller, and the squeezing effect on the instrument tube 200 gradually weakens, and the instrument tube 200 gradually returns to the undeformed state.

[0072] The trachea 422 is installed inside the insertion portion 10 together with the instrument tube 200. One end of the trachea 422 is generally connected to a device such as a gas source that can be used to inflate the airbag 412. The other end of the trachea 422 extends into the insertion portion 10, extending from the proximal end of the insertion portion 10 to the position where the airbag 412 is located. Since the airbag 412 needs to be continuously inflated and deflated, in some preferred embodiments, two tracheas 422 can be connected to the same airbag 412, one trachea 422 for inflation and one trachea 422 for deflation. An airbag 412 can also be connected to only one trachea 422, and by controlling the gas source end, the inflation and deflation of the airbag 412 can also be controlled.

[0073] The embodiment of the present application also provides an endoscope. Refer to Figure 14 and Figure 15 As shown, it includes the insertion portion 10 provided in any of the above embodiments. The endoscope further includes an endoscope handle 20, and the proximal end of the insertion portion 10 is installed at the endoscope handle 20.

[0074] In some embodiments of the present application, refer to Figure 15 As shown, the endoscope further includes a control component 800. The control component 800 is installed at the endoscope handle 20. The control component 800 is connected to the airbag 412 and is used to control the inflation and deflation of the airbag 860.

[0075] Refer to Figure 16 As shown, the control component 800 includes a housing 880, a liquid channel 810, and an impeller 820. The housing 880 is installed on the endoscope handle 20. The liquid channel 810 is located inside the housing 880. The liquid channel 810 communicates with the instrument tube 200 of the insertion portion 10. Liquid is input into the instrument tube 200 through the liquid channel 810. The impeller 820 is installed inside the liquid channel 810, and the impeller 820 can rotate under the scouring action of the flowing liquid.

[0076] Refer to Figure 17As shown, the control component 800 further includes a button 830, a rotating shaft 840, a cam 850, a control airbag 860, and a middleware 870. The rotating shaft 840 is coaxially fixed to the impeller 820. The cam 850 is fixed to the rotating shaft 840. When the impeller 820 rotates under the scouring of the liquid, it can drive the rotating shaft 840 to rotate synchronously, and the cam 850 fixed to the rotating shaft 840 also rotates synchronously. The button 830 is rotatably connected to the rotating shaft 840, and the rotation of the rotating shaft 840 does not drive the button 830 to rotate synchronously. And the button 830 is movably connected to the housing 880 and can move relative to the housing 880 along the axial direction of the rotating shaft 840. By pushing the button 830 to move, the positions of the cam 850, the rotating shaft 840, and the impeller 820 can be changed, and the position of the impeller 820 in the liquid passage 810 can be adjusted. The closer the impeller 820 is to the center of the liquid passage 810, the stronger the driving force of the liquid on the impeller 820. The button 830 can also drive the impeller 820 to be as far away as possible from the flow range of the liquid in the liquid passage 810 to prevent the impeller 820 from rotating under the scouring of the liquid flow.

[0077] The middleware 870 is fixed to the button 830. The inside of the middleware 870 is hollow and is also connected to the control airbag 860 and the trachea 422. The control airbag 860 is fixed to the middleware 870. When the impeller 820 can rotate under the drive of the liquid in the liquid passage 810, the control airbag 860 is located on the rotation path of the cam 850. During the rotation of the cam 850 following the rotating shaft 840, the cam 850 can squeeze the control airbag 860. When the cam 850 squeezes the control airbag 860, the control airbag 860 is compressed, and the excess gas is sequentially transmitted to the airbag 412 through the middleware 870 and the trachea 422, causing the airbag 412 to expand. When the cam 850 moves away from the control airbag 860, the squeezing effect on the control airbag 860 disappears. Part of the gas in the airbag 412 at the distal end of the insertion portion 10 is sequentially transported back to the control airbag 860 through the trachea 422 and the middleware 870, the control airbag 860 expands again, and the airbag 412 at the distal end of the insertion portion 10 shrinks.

[0078] The liquid scours the impeller 820 to rotate. The rotation of the impeller 820 drives the rotating shaft 840 and the cam 850 to rotate, causing the cam 850 to periodically squeeze the control airbag 860, so that the airbag 412 at the distal end of the insertion portion 10 periodically expands and shrinks. Thus, the inner diameter size and / or shape of the instrument tube 200 can be controlled to change periodically, and the liquid output from the instrument tube 200 forms a pulse.

[0079] The impeller 820 can rotate directly driven by the flow of the liquid without using an additional power source. At the same time, the positions of the impeller 820 and the cam 850 can be controlled by moving the control button 830, thereby controlling whether to squeeze the control airbag 860, whether the airbag 412 at the distal end of the insertion portion 10 expands, and whether the water flow inside the control instrument tube 200 forms a pulse. The operation method is simple and fast.

[0080] In some preferred embodiments, the middleware 870 can be in an annular structure. The middleware 870 is sleeved outside the rotating shaft 840. The control airbag 860 is fixed to the inner wall surface of the middleware 870, and the cam 850 rotates in the annular cavity of the middleware 870.

[0081] The endoscope provided by the embodiment of the present application can be a nephroscope, or can be a bronchoscope, an esophagoscope, a gastroscope, a colonoscope, an otoscope, a nasal endoscope, an oral endoscope, a laryngoscope, a vaginoscope, a laparoscope, an arthroscope, etc. The embodiment of the present application does not specifically limit the types of endoscopes.

[0082] It should be noted that in this article, the terms "including", "comprising" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including one..." does not exclude the presence of additional identical elements in the process, method, article or device including that element.

[0083] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention.

Claims

1. An insertion part, applied to an endoscope, characterized in that, Comprising: An instrument tube (200) extending from the proximal end to the distal end of the insertion portion (10); A driving member (410) mounted on the peripheral wall of the instrument tube (200), the driving member (410) being configured to controllably drive the wall of the instrument tube (200) to deform regularly in the radial direction of the instrument tube (200), so as to regularly change the inner diameter size and / or shape of a part of the instrument tube (200) connected to the driving member (410); The instrument tube (200) includes a fixed area that is hermetically fixed to the front end seat (100) of the insertion portion (10) to seal the gap between the instrument tube (200) and the front end seat (100), and the driving member (410) and the fixed area are arranged in sequence along the proximal-to-distal direction of the instrument tube (200).

2. The insertion part according to claim 1, characterized in that, The front end seat (100) is further provided with a camera module mounting portion (120) for mounting a camera module (710), and the driving member (410) is located on the proximal side of the camera module mounting portion (120).

3. An insertion part according to claim 1 or 2, characterized in that, The insertion portion (10) further includes a snake bone segment (500) mounted on the proximal side of the front end seat (100), the instrument tube (200) passes through the snake bone segment (500), and the driving member (410) is mounted on the peripheral wall of the part of the instrument tube (200) corresponding to the snake bone segment (500).

4. The insertion part according to claim 1, characterized in that, The insertion portion (10) includes at least one set of driving member groups, each driving member group including two driving members (410) located at both radial ends of the instrument tube (200), and the two corresponding driving members (410) can move synchronously closer to or farther away from the axis of the instrument tube (200).

5. The insertion part according to claim 4, characterized in that, The insertion portion (10) includes at least two sets of driving member groups arranged axially along the instrument tube (200), and in any one of the driving member groups, the gap formed between two adjacent driving members (410) is correspondingly arranged with one of the driving members (410) in the driving member group axially adjacent to this driving member group.

6. The insertion part according to claim 1, wherein, The driving member (410) includes a piezoelectric sheet (411), and the piezoelectric sheet (411) is further connected to a power line (421) for supplying an electrical signal to the piezoelectric sheet (411).

7. The insertion part according to claim 6, characterized in that, An installation groove (210) is provided on the outer wall surface of the instrument tube (200), and the piezoelectric sheet (411) is installed in the installation groove (210).

8. An insertion part according to claim 1, characterized in that The driving member (410) further includes an airbag (412), the airbag (412) is connected to an air tube (422), the air tube (422) communicates with the airbag (412), and the air tube (422) is used to supply gas to the airbag (412).

9. The insertion part according to claim 1, characterized in that, The insertion part (10) further includes a limiting tube (600), the limiting tube (600) is sleeved outside the instrument tube (200), the driving member (410) is located between the limiting tube (600) and the instrument tube (200), and the stiffness of the limiting tube (600) is greater than that of the instrument tube (200).

10. An endoscope, characterized in that, Comprising the insertion part (10) according to any one of claims 1-9.

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