An insertion portion and an endoscope

Abstract

The present invention relates to the technical field of endoscopes, and specifically discloses an insertion portion and an endoscope. The disclosed insertion portion includes an inner tube, an outer tube, an electromagnetic coil, and a magnetorheological material filling body. A receiving gap is formed between the outer tube and the inner tube, and the receiving gap extends from the distal end of the insertion portion to the proximal end of the insertion portion. The magnetorheological material filling body is filled in the receiving gap, and the electromagnetic coil is arranged in the insertion portion and extends along the axial direction of the insertion portion. When the electromagnetic coil is not energized, the magnetorheological material filling body is in a flowing state, and the operator can bend the insertion portion so that it can reach the desired bending state. Then, the electromagnetic coil is energized to generate a magnetic field, so that the magnetorheological material filling body is transformed into a semi-cured state or a cured state, and the entire insertion portion is shaped and has a certain structural strength, so as to be able to replace the mandrel to lift the epiglottis cartilage to expose the glottis after inserting the catheter, solving the problem of poor operational convenience in the related art that it is necessary to insert the mandrel first and then the endoscope.

Description

Technical Field

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

[0002] Endotracheal intubation refers to the method of inserting a special catheter through the oral cavity or nasal cavity and into the trachea or bronchus through the glottis. This technique can provide the best conditions for maintaining airway patency, ventilation and oxygen supply, airway suction, etc., and is an important measure for rescuing patients with respiratory dysfunction.

[0003] In the related art, during the intubation process, a stylet is usually inserted into the catheter to make the catheter rigid. This hardening effect helps the operator more easily lift the epiglottis cartilage, thereby more easily exposing the glottis, and then smoothly inserting the catheter. After inserting the catheter, the stylet is usually removed to insert the endoscope to facilitate direct observation of the trachea and bronchi, including the mucosal state, airway patency, presence of foreign bodies or tumors, etc., in order to accurately judge the patient's condition and formulate a treatment plan. However, this method of replacing the insertion of the stylet and the endoscope has the defect of poor operation convenience. Summary of the Invention

[0004] The present invention discloses an insertion portion and an endoscope to solve the above-mentioned technical problems existing in the related art.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] In a first aspect, the present application provides an insertion portion for use in an endoscope. The disclosed insertion portion includes an inner tube, an outer tube, an electromagnetic coil, and a magnetorheological material filling body. Specifically: The outer tube is sleeved outside the inner tube, and a receiving gap is formed therebetween, and the receiving gap extends from the distal end of the insertion portion to the proximal end of the insertion portion. The magnetorheological material filling body is filled in the receiving gap. The electromagnetic coil is disposed inside the insertion portion and extends along the axial direction of the insertion portion. The electromagnetic coil is configured to generate a magnetic field when energized, so that the magnetorheological material filling body changes from a flowing state to a semi-cured state or a cured state.

[0007] Further, the insertion portion further includes a support member, and the support member is disposed inside the inner tube to support the inner tube, or the support member is embedded in the side wall of the inner tube.

[0008] Further, the support member is a spiral tube, or the support member is a braided net tube.

[0009] Further, along the extending direction of the insertion portion, the inner tube and the outer tube are spaced and connected to form a plurality of first fixing positions.

[0010] Further, the insertion portion further includes a towing rope, the distal end of the towing rope is connected to the inner side of the inner tube through a second fixing position, and the second fixing position corresponds to the first fixing position at the distal end.

[0011] Further, a plurality of constraint positions distributed along the axial direction thereof are further provided on the inner side of the inner tube, one constraint position is correspondingly arranged with one first fixing position, the towing rope axially passes through the constraint position, and the constraint position is configured to radially constrain the towing rope.

[0012] Further, at least a part of the first fixing position is coated on the electromagnetic coil; and / or, the pitch of the electromagnetic coil is a first distance, and the extension length of the first fixing position in the axial direction of the insertion portion is greater than the first distance; and / or, the pitch of the electromagnetic coil is a first distance, and the distance between two adjacent first fixing positions is less than or equal to three times the first distance.

[0013] Further, there is one electromagnetic coil; or, there are at least two electromagnetic coils distributed along the axial direction of the insertion portion to divide the insertion portion into at least two control segments, and the electromagnetic coils in each control segment are respectively connected with electric wires.

[0014] Further, the insertion portion further includes a sleeve, the sleeve is connected to the inner side of the inner tube, and the part of the insertion portion distributed at the distal end of the sleeve constitutes an active bending segment, and the active bending segment has at least two control segments.

[0015] In a second aspect, the present application further provides an endoscope, including an operation handle and the aforementioned insertion portion, and the proximal end of the insertion portion is connected to the operation handle.

[0016] Further, in the case where there are at least two electromagnetic coils, an indicator light corresponding to the electromagnetic coils is provided on the operation handle, and the indicator light is configured to light up when the electromagnetic coils are conductive and go out when the electromagnetic coils are powered off.

[0017] Further, a conductance member and a plurality of electrical contact points are provided on the operation handle, the conductance member is connected to a power source, the plurality of electrical contact points surround the conductance member, and each electrical contact point is connected to the electromagnetic coil through an electric wire; a knob is further provided on the operation handle, and the knob is configured to sequentially conduct the conductance member and the plurality of electrical contact points when rotated.

[0018] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0019] For the insertion part and endoscope of the present application, when the electromagnetic coil is not powered on, the magnetorheological material filling is in a flowing state. The operator can bend the insertion part so that it can reach the desired bending state. Then, by energizing the electromagnetic coil to generate a magnetic field, the magnetorheological material filling is transformed into a semi-cured state or a cured state, so that the entire insertion part is shaped and has a certain structural strength, so as to be able to lift the epiglottis cartilage to expose the glottis after inserting the catheter, solving the problem of poor operational convenience in the related art where it is necessary to insert the mandrel first and then the endoscope. Description of the Drawings

[0020] 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, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 is one of the structural schematic diagrams of the insertion part of the embodiment of the present application;

[0022] Figure 2 is the second structural schematic diagram of the insertion part of the embodiment of the present application;

[0023] Figure 3 is the third structural schematic diagram of the insertion part of the embodiment of the present application;

[0024] Figure 4 is the fourth structural schematic diagram of the insertion part of the embodiment of the present application;

[0025] Figure 5 is the structural schematic diagram of the endoscope of the embodiment of the present application;

[0026] Figure 6 is the distribution schematic diagram of the conductance member and the electrical contact point in the operation handle of the embodiment of the present application;

[0027] Figure 7 is the schematic diagram of the knob of the embodiment of the present application.

[0028] In the figure:

[0029] 10. Operation handle; 110. Indicator light; 120. Conductance member; 130. Electrical contact point; 140. Knob; 141. Electrode plate; 20. Insertion part; 20a. Control segment; 210. Inner tube; 2110. Second fixed position; 2120. Constraint position; 220. Outer tube; 230. Electromagnetic coil; 240. Magnetorheological material filling; 250. Accommodation gap; 260. Support member; 270. First fixed position; 280. Traction rope; 290. Sleeve. Detailed Implementation Modes

[0030] 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 embodiments. All other implementation modes 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.

[0031] The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0032] In the related art, the catheter inserted into the trachea is usually a flexible tube. During tracheal intubation, a stylet is usually inserted into the catheter to keep the catheter in a specific shape, so as to have a certain structural strength during insertion, so that the operator can use the catheter to gently lift the epiglottis cartilage, thereby more easily exposing the glottis and enabling the catheter to be smoothly inserted into the trachea or bronchus. After the catheter is inserted into the trachea or bronchus, the stylet needs to be withdrawn backward, and then an endoscope is inserted into the catheter so that the distal end of the insertion part of the endoscope can penetrate into the trachea or bronchus to facilitate the doctor to observe the trachea and bronchus, so as to accurately judge the patient's condition and formulate a treatment plan. However, this method of inserting the stylet first and then the endoscope, due to the two insertion methods, always has the problems of complicated operation and poor convenience.

[0033] Based on the above situation, the embodiments of this application provide an insertion part and an endoscope. The insertion part provided by the embodiments of this application has two states, hard and soft. It can be inserted into the catheter in the soft state and can be switched to the hard state in the catheter to assist the catheter to lift the epiglottis cartilage and insert it into the trachea or bronchus, and then be switched to the soft state to ensure the normal use function of the endoscope. The following will be combined with the attached Figures 1 to 7 , and the insertion part and endoscope provided by the embodiments of this application will be described in detail through specific embodiments and their application scenarios.

[0034] Please refer to Figure 1, an embodiment of the present application discloses an insertion part 20. The disclosed insertion part 20 is applied to an endoscope to probe into a human body cavity for observing a diseased part, which is convenient for a doctor to accurately diagnose a patient's disease. Specifically, the disclosed insertion part 20 includes an inner tube 210, an outer tube 220, an electromagnetic coil 230, and a magnetorheological material filling body 240. Among them, the outer tube 220 is sleeved outside the inner tube 210, and the inner diameter of the outer tube 220 is larger than the outer diameter of the inner tube 210, so that a receiving gap 250 is formed between the inner tube 210 and the outer tube 220. The receiving gap 250 extends from the distal end of the insertion part 20 to the proximal end of the insertion part 20. That is to say, the receiving gap 250 is at least formed in the distal part of the insertion part 20. The aforementioned magnetorheological material filling body 240 is filled in the receiving gap 250.

[0035] It should be noted that in the embodiment of the present application, the inner tube 210 and the outer tube 220 are made of flexible materials. Flexible materials refer to materials that can deform under external forces and have the characteristics of being soft, bendable, or stretchable. Exemplarily, the inner tube 210 and the outer tube 220 can be tubular members made of rubber materials, soft gums, or plastic films. The magnetorheological material filling body 240 is formed of magnetorheological materials. Magnetorheological materials are materials with magneto-induced deformation effects, and their fluidity (or arrangement) can be adjusted by an externally applied magnetic field. Exemplarily, the magnetorheological materials are ferromagnetic shape memory alloys, magnetorheological fluids, magnetostrictive materials, etc. In the embodiment of the present application, the magnetorheological material filling body 240 is filled in the receiving gap 250 between the inner tube 210 and the outer tube 220. When the magnetorheological material filling body 240 is in a non-magnetic field environment, if the magnetorheological material filling body 240 deforms under external force, the inner tube 210 and the outer tube 220 can deform with the magnetorheological material filling body 240. That is to say, the distal part of the insertion part 20 in a non-magnetic field environment can be deformed by external force to facilitate an operator to shape the distal part of the insertion part 20.

[0036] In the embodiment of the present application, the electromagnetic coil 230 is disposed within the insertion portion 20, and the electromagnetic coil 230 extends along the axial direction of the insertion portion 20. Exemplarily, the electromagnetic coil 230 may be formed by helically winding a conductive metal wire, such as a steel wire, a copper wire, or an aluminum wire, etc. The electromagnetic coil 230 may be disposed within the accommodation gap 250 between the inner tube 210 and the outer tube 220, or on the inner side of the inner tube 210, or embedded within the wall of the inner tube 210 or the outer tube 220. In a preferred embodiment, the electromagnetic coil 230 is disposed within the accommodation gap 250. In this case, the inner tube 210 can play a certain pre-positioning role for the electromagnetic coil 230, and has the characteristics of convenient processing and forming. For the convenience of subsequent description, in the embodiment of the present application, it is described by taking the electromagnetic coil 230 disposed within the accommodation gap 250 as an example. At this time, the magnetorheological material filling body 240 can surround the outside of the electromagnetic coil 230.

[0037] It can be understood that the electromagnetic coil 230 is connected to an electric wire, and the electromagnetic coil 230 can be in a conductive state or a power-off state through the electric wire. When the electromagnetic coil 230 is in a conductive state, the electromagnetic coil 230 can generate a magnetic field, making the aforementioned magnetorheological material filling body 240 in a magnetic field environment, and then the fluidity changes. Specifically, the magnetorheological material filling body 240 changes from a flowing state to a semi-cured state or a cured state. At this time, the entire insertion portion 20 is in a hard state and has a certain structural strength and is difficult to occur under the action of an external force; while when the electromagnetic coil 230 is in a power-off state, the magnetic field generated by the electromagnetic coil 230 disappears, and the aforementioned magnetorheological material filling body 240 changes from a semi-cured state or a cured state to a flowing state again.

[0038] Based on the above technical solution, when the insertion part of the embodiment of the present application is specifically applied in tracheal intubation, the electromagnetic coil 230 can be first in a power-off state. At this time, the magnetorheological material filling body 240 is in a flowing state, so that the insertion part 20 can be bent and deformed under an external force. The operator can place the insertion part 20 into the catheter and bend the catheter to reach the desired bending state. Then, the electromagnetic coil 230 can be energized through the electric wire. The energized electromagnetic coil 230 generates a magnetic field, which converts the magnetorheological material filling body 240 into a semi-cured state or a cured state. At this time, the insertion part 20 produces an effect like a mandrel, making the catheter hard. This hardening effect of the catheter helps the operator easily lift the epiglottic cartilage with it and then insert it into the trachea or bronchus. Compared with the traditional catheter placement method, this design can avoid the two insertions of the mandrel and the endoscope, enabling the catheter and the endoscope to be inserted in place at one time, with the characteristic of convenient operation. At the same time, after the catheter and the insertion part 20 are jointly inserted into the trachea or bronchus, the electromagnetic coil 230 can be in a power-off state. At this time, the magnetorheological material filling body 240 returns to the flowing state again, enabling the entire insertion part 20 to bend following the movement. The flexible insertion part 20 can better adapt to the natural curvature of the trachea and bronchus, reducing the irritation and pain to the patient. Moreover, the flexible insertion part can penetrate into smaller bronchi, such as sub-segments and most sub-sub-segments of the bronchi, expanding the inspection range of the endoscope.

[0039] In the embodiment of the present application, based on the way that the accommodation gap 250 extends from the distal end to the proximal end of the insertion part 20, the distal part of the insertion part 20 can be switched between a soft state and a hard state, and the proximal part of the insertion part 20 can be either in a soft state or a hard state. It should be noted that when the proximal part of the insertion part 20 is in a soft state, the extension length of the distal part of the insertion part 20 should satisfy that the operator can use the distal part alone to lift the epiglottic cartilage. That is to say, when the operator holds the insertion part 20 to lift the epiglottic cartilage, the part held by the operator is provided with the magnetorheological material filling body 240.

[0040] The inventor found during the research process that when the electromagnetic coil 230 is arranged in the accommodation gap 250, during the process of the operator bending and shaping the insertion part 20, when the insertion part 20 deforms under an external force, since the outer tube 220 is supported by the electromagnetic coil 230, it is difficult for the outer tube 220 to wrinkle and collapse. However, the inner tube 210 is prone to collapse due to the lack of effective support, thus narrowing or completely blocking the channel of the inner tube 210, affecting the normal passage of gas and liquid, and at the same time affecting the insertion of the treatment instrument into the trachea or bronchus for surgical operation.

[0041] Based on this situation, in some embodiments of the present application, please refer toFigure 2 , the insertion portion 20 may further include a support member 260 disposed inside the inner tube 210 to support the inner tube 210, thereby preventing the inner tube 210 from collapsing due to the formation of wrinkled portions when subjected to an external force. Exemplarily, the support member 260 may be a helical tube or a braided net tube. The support member 260 may be attached to the inner wall of the inner tube 210 and may be fixedly connected to the inner tube 210 by gluing. Alternatively, the support member 260 may also be embedded in the inner wall of the inner tube 210. Specifically, the inner tube 210 may be formed to wrap around the support member 260 during molding by hot melting or extrusion molding. This embodiment does not make specific limitations on this. By providing the support member 260, the stability of the inner tube 210 can be effectively enhanced to prevent the inner tube 210 from collapsing during the process of bending and shaping the insertion portion 20.

[0042] In some embodiments of the present application, please refer to Figure 3 , along the extending direction of the insertion portion 20, the inner tube 210 and the outer tube 220 are spaced and connected. The portion of the inner tube 210 connected to the outer tube 220 forms a first fixing position 270. Exemplarily, the inner tube 210 and the outer tube 220 may be spaced and connected by gluing, hot melting or ultrasonic welding to form the first fixing position 270. On the one hand, based on the supporting effect of the electromagnetic coil 230 on the outer tube 220, the outer tube 220 can be prevented from generating wrinkles and collapsing. The inner tube 210 is connected to the outer tube 220 through a plurality of first fixing positions 270, so that the outer tube 220 can play a certain pulling role on the inner tube 210 through the first fixing positions 270, thereby also preventing the inner tube 210 from collapsing during the bending process. Thus, the setting of the foregoing support member 260 can be cancelled. On the other hand, when the electromagnetic coil 230 is not energized, the entire insertion portion 20 exhibits a hard characteristic at the first fixing position 270, while the gap portion between two first fixing positions 270 exhibits a soft characteristic. When the insertion portion 20 is subjected to an external force, the insertion portion 20 can undergo a certain amount of deformation and bending at its soft portion. That is to say, through the setting of a plurality of first fixing positions 270, the entire insertion portion 20 forms a structure similar to a riveted snake bone. In this case, by providing a traction member to actively bend the distal portion of the insertion portion 20 (i.e., the distal portion of the insertion portion 20 constitutes an active bending section), an additional snake bone can be cancelled from being provided inside the insertion portion 20 as the active bending section of the insertion portion 20, thereby simplifying the structure and production cost of the insertion portion 20 of the endoscope.

[0043] As can be seen from the foregoing, when the inner tube 210 and the outer tube 220 are fixedly connected through a plurality of first fixing positions 270, the inner tube 210 and the outer tube 220 form a structure similar to a riveted snake bone. Based on this, in an alternative embodiment of the present application, please refer to Figure 4, the insertion portion 20 may further include a traction rope 280. The distal end of the traction rope 280 is connected and fixed to the inner tube 210 through the second fixing position 2110. Exemplarily, the distal end of the traction rope 280 may be connected to the inner tube 210 by means such as gluing or hot melting to form the second fixing position 2110, and the second fixing position 2110 corresponds to the first fixing position 270 at the distal end.

[0044] In the embodiments of the present application, in order to enable the distal portion of the insertion portion 20 to perform an expected bending action under the pulling action of the traction rope 280, please refer to Figure 4 , a plurality of constraint positions 2120 distributed along the axial direction thereof are further provided on the inner side of the inner tube 210. The plurality of constraint positions 2120 are distributed at the proximal end of the second fixing position 2110, and one constraint position 2120 is correspondingly arranged with one first fixing position 270. The traction rope 280 axially passes through the constraint positions 2120, and the constraint positions 2120 are configured to radially constrain the traction rope. In this way, when the traction rope 280 is pulled, the traction rope 280 can apply a bending force to the distal portion of the insertion portion 20 through the constraint positions 2120, so as to perform an expected bending action.

[0045] Exemplarily, a plurality of incision groups are provided on the side wall of the inner tube 210 along its axial direction. Each incision group includes two parallel incisions. The portion of the inner tube 210 between the two incisions is recessed inward to form the constraint position 2120. The traction rope 280 movably passes through the constraint position 2120. In this way, the portion of the insertion portion 20 provided with the constraint position 2120 can serve as the active bending section of the insertion portion 20. The active bending section in this embodiment can form a plurality of bending segments with the gap portion between the two first fixing positions 270 as the bending point. When the traction rope 280 is subjected to a pulling force, the active bending section can perform an expected bending action. Through the settings of the first fixing position 270, the second fixing position 2110 and the plurality of constraint positions 2120, the snake bone structure provided in the insertion portion of the traditional endoscope can be cancelled, thereby simplifying the structure and production cost of the insertion portion 20 of the endoscope.

[0046] In the embodiments of the present application, at least a part of the first fixing position 270 is coated on the electromagnetic coil 230. In this way, the first fixing position 270 can not only connect and fix the inner tube 210 and the outer tube 220, but also play a role in constraining and positioning the electromagnetic coil 230, effectively avoiding the axial movement of the electromagnetic coil 230 in the insertion portion 20 and improving the stability of the electromagnetic coil 230 in the insertion portion 20.

[0047] In a further technical solution, the pitch of the electromagnetic coil 230 is the first pitch, and the extension length of the first fixing position 270 in the axial direction of the insertion part 20 is greater than the first distance. In this case, the first fixing position 270 in the insertion part 20 will necessarily cover the electromagnetic coil 230, and has a relatively large covering distance. Exemplarily, the first fixing position 270 can cover 2 to 4 spiral units of the electromagnetic coil 230, so as to further ensure the stability of the first fixing position 270 and the electromagnetic coil 230 in the insertion part 20.

[0048] During the research process, the inventor found that if the distance between two first fixing positions 270 is too large, during the process of bending and shaping the insertion part 20, based on the fluidity characteristics of the magnetorheological material filling body 240 in a non-magnetic field environment, the flowing magnetorheological material filling body 240 flows to the inner and outer sides under pressure, making the inner tube 210 prone to bending and deforming radially inward of the insertion part 20, while the outer tube 220 is prone to bending and deforming radially outward of the insertion part 20. That is to say, it is difficult for the insertion part 20 to undergo the expected bending deformation.

[0049] Based on the above situation, in a further technical solution, the distance between two adjacent first fixing positions 270 is less than or equal to three times the first distance, preferably twice the first pitch. In this case, during the bending and shaping process, the deformation amounts of the inner tube 210 and the outer tube 220 are relatively small, and it is easier for the two to bend towards the same side when subjected to an external force, that is, to make the insertion part 20 undergo the expected bending and shaping.

[0050] In a further technical solution, please continue to refer to Figure 4 , the insertion part 20 may further include a sleeve 290, and the sleeve 290 is connected to the inner side of the inner tube 210. Exemplarily, the distal end of the sleeve 290 is connected to the inner side of the inner tube 210 by means of gluing, and the aforementioned plurality of constraint positions 2120 are distributed at the distal end of the sleeve 290, and the traction rope 280 passes through the plurality of constraint positions 2120 and then is arranged inside the sleeve 290. In this case, the part of the insertion part 20 corresponding to the sleeve 290 constitutes the passive bending section of the insertion part 20, and the part of the insertion part 20 distributed at the distal end of the sleeve 290 constitutes the active bending section of the insertion part. That is to say, in the embodiment of the present application, the part of the distal end of the insertion part 20 that extends beyond the sleeve 290 constitutes the active bending section of the insertion part 20. The traction rope 280 is arranged inside the sleeve 290, and the sleeve 290 can play a certain protective role for the traction rope 280 and prevent the traction rope 280 from moving around.

[0051] In some embodiments of the present application, the aforementioned electromagnetic coil 230 can be one. In this case, when the electromagnetic coil 230 is energized through an electric wire, the entire insertion part 20 is in a relatively hard state to facilitate lifting the epiglottis cartilage and inserting it into the trachea or bronchus.

[0052] In the process of research, the inventor found that when there is only one electromagnetic coil 230, the change in its hardness is relatively single, making it difficult to adapt to human body cavities of different shapes, sizes, and curvatures. During the operation, due to the limitations of hardness adjustment, doctors may need to maintain a relatively high hardness during the operation to ensure the stability of the operation, but this will undoubtedly increase the discomfort and pain of the patient.

[0053] Based on this situation, in some embodiments of the present application, the electromagnetic coil 230 can also be at least two distributed along the axis of the insertion part 20, so as to divide the insertion part 20 into at least two control segments 20a. The electromagnetic coil 230 in each control segment 20a is connected to an electric wire. With such a setting, by arranging multiple electromagnetic coils 230, multiple parts of the insertion part 20 can present different hardness states, that is, some parts can be relatively hard, some parts can be always soft and hard, and some parts can be relatively soft. In this way, during the operation, the doctor can adjust the hardness of each control segment 20a in real time, minimizing the discomfort and pain of the patient while ensuring the accuracy of the operation. It can be understood that by controlling the magnitude of the energizing current of each electromagnetic coil 230, the hardness of multiple control segments 20a can also be kept consistent, and this embodiment will not elaborate on this.

[0054] Meanwhile, during the process of the operator bending and shaping the insertion part 20, if the bending shapes of other control segments 20a reach the desired bending posture, while the bending shape of a certain control segment 20a does not reach the desired bending posture, the operator can control the electromagnetic coil 230 of the control segment 20a that does not reach the desired posture to be powered off and remain in a relatively soft state, and the operator can re-bend and shape this control segment 20a, thereby increasing the convenience of the operation.

[0055] In a further technical solution, at least two electromagnetic coils 230 are distributed in the active bending section. That is to say, the active bending section has at least two control segments 20a. Exemplarily, the active bending section has two control segments 20a. With such a setting, after controlling one control segment 20a to bend to the desired posture, it can be kept in the current fixed posture by energizing the electromagnetic coil 230, while the other control segment 20a still remains in a relatively soft adjustable state. The operator can control the other control segment 20a to perform an independent bending action, and even make the bending direction of the other control segment 20a opposite to that of one control segment 20a, so that the active bending section can present an S-shaped bending state. That is to say, the bending radius of the active bending section is adjustable, and more complex bending actions can be realized to adapt to the human body cavity, significantly improving the bending flexibility of the insertion part 20.

[0056] Please refer toFigure 5 , Figure 6 and Figure 7 , embodiments of the present application also disclose an endoscope, and the disclosed endoscope includes an operation handle 10 and the aforementioned insertion portion 20, and the proximal end of the insertion portion 20 is connected to the operation handle 10.

[0057] In a further technical solution, when there are at least two electromagnetic coils 230, an indicator light 110 corresponding to the electromagnetic coils 230 is provided on the operation handle 10. The indicator light 110 is configured to turn on when the electromagnetic coils 230 are conductive and turn off when the electromagnetic coils 230 are powered off. When bending and shaping the insertion portion 20, the operator can directly judge the state of the magnetorheological material filler 240 by observing the state (on or off) of the indicator light 110. This visual feedback is more accurate and rapid than the traditional judgment relying on hand feeling or experience. Through the clear indication of the indicator light 110, the operator can more easily avoid misoperation.

[0058] In the embodiments of the present application, please continue to refer to Figure 6 and Figure 7 , when there are multiple electromagnetic coils 230, a conductance member 120 and multiple electrical contact points 130 are provided on the operation handle 10. Among them, the conductance member 120 is connected to a power source, the multiple electrical contact points 130 surround the conductance member 120, and each electrical contact point 130 is connected to the electromagnetic coil 230 through the aforementioned electrical wire. When the conductance member 120 is connected to the electrical contact points 130, the electromagnetic coil 230 is in a conductive state.

[0059] Specifically, a knob 140 is further provided on the operation handle 10, and an electrode piece 141 is provided on the knob 140. By rotating the knob 140, the electrode piece 141 can sequentially conduct the conductance member 120 and the multiple electrical contact points 130, and the electrode piece 141 can simultaneously conduct all the electrical contact points 130 and the conductance member 120. It should be noted that when rotating the knob 140, the first electromagnetic coil 230 to be conducted is the first electromagnetic coil 230 at the proximal end of the insertion portion 20, and as the knob 140 rotates, the electromagnetic coils 230 in the distance are sequentially conducted. In this way, the first hardened part at the proximal end can provide stable support for the later hardened part at the distal end.

[0060] It should be noted that, in this text, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0061] 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 within the protection scope of the present invention.

Claims

1. An insertion portion, applied to an endoscope, characterized in that It includes an inner tube (210), an outer tube (220), an electromagnetic coil (230), a magnetorheological material filler (240) and a towing rope (280); wherein: The outer tube (220) is sleeved outside the inner tube (210), and a receiving gap (250) is formed therebetween, and the receiving gap (250) extends from the distal end of the insertion portion to the proximal end of the insertion portion, and the magnetorheological material filler (240) is filled in the receiving gap (250); The electromagnetic coil (230) is disposed inside the insertion portion, and the electromagnetic coil (230) extends along the axial direction of the insertion portion, and the electromagnetic coil (230) is configured to generate a magnetic field when energized, so that the magnetorheological material filler (240) changes from a flowing state to a semi-cured state or a cured state; Along the extending direction of the insertion portion, the inner tube (210) and the outer tube (220) are spaced and connected to form a plurality of first fixing positions (270), and the distal end of the towing rope (280) is connected to the inner side of the inner tube (210) through a second fixing position (2110), and the second fixing position (2110) corresponds to the first fixing position (270) at the distal end; A plurality of constraint positions (2120) distributed along the axial direction thereof are further provided on the inner side of the inner tube (210), one constraint position (2120) is correspondingly arranged with one first fixing position (270), the towing rope (280) axially passes through the constraint position (2120), and the constraint position (2120) is configured to radially constrain the towing rope (280).

2. The insertion part according to claim 1, characterized in that It further includes a support member (260), the support member (260) is disposed inside the inner tube (210) to support the inner tube (210), or the support member (260) is embedded in the side wall of the inner tube (210).

3. The insertion part according to claim 2, characterized in that, The support member (260) is a spiral tube, or the support member (260) is a braided net tube.

4. The insertion part according to claim 1, characterized in that At least a part of the first fixing position (270) is covered by the electromagnetic coil (230); And / or, the pitch of the electromagnetic coil (230) is a first distance, and the extending length of the first fixing position (270) in the axial direction of the insertion portion is greater than the first distance; And / or, the pitch of the electromagnetic coil (230) is a first distance, and the distance between two adjacent first fixing positions (270) is less than or equal to three times the first distance.

5. The insertion part according to claim 1, characterized in that The electromagnetic coil (230) is one; or, the electromagnetic coil (230) is at least two distributed along the axial direction of the insertion portion to divide the insertion portion into at least two control segments (20a), and the electromagnetic coils (230) in each control segment (20a) are respectively connected with electric wires.

6. The insertion part according to claim 5, characterized in that It further includes a sleeve (290), the sleeve (290) is connected to the inner side of the inner tube (210), and the part of the insertion portion distributed at the distal end of the sleeve (290) constitutes an active bending section, and the active bending section has at least two control segments (20a).

7. An endoscope, characterized in that, It includes an operating handle (10) and an insertion part (20) as described in any one of claims 1 to 6, and the proximal end of the insertion part (20) is connected to the operating handle (10); When there are at least two electromagnetic coils (230), an indicator light (110) corresponding to the electromagnetic coil (230) is arranged on the operating handle (10), and the indicator light (110) is configured to light up when the electromagnetic coil (230) is conductive and go out when the electromagnetic coil (230) is powered off.

8. The endoscope according to claim 7, characterized in that, A conductance member (120) and a plurality of electrical contact points (130) are arranged on the operating handle (10), the conductance member (120) is connected to a power source, the plurality of electrical contact points (130) surround the conductance member (120), and each electrical contact point (130) is connected to the electromagnetic coil (230) through an electrical wire; A knob (140) is further arranged on the operating handle (10), and the knob (140) is configured to sequentially conduct the conductance member (120) and the plurality of electrical contact points (130) when rotated.

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