Insertion part and endoscope

Abstract

The invention relates to the technical field of endoscopes, and particularly discloses an insertion part and an endoscope, the disclosed insertion part comprises an inner tube, an outer tube, an electromagnetic coil and a magnetorheological material filling body, an accommodating gap is formed between the outer tube and the inner tube, and the accommodating gap extends from the far end of the insertion part to the near end of the insertion part; the containing gap is filled with the magnetorheological material filling body, and the electromagnetic coil is arranged in the insertion part and extends in the axial direction of the insertion part; when the electromagnetic coil is not electrified, the magnetorheological material filling body is in a flowing state, an operator can bend the insertion part to reach an expected bending state, and then the electromagnetic coil is electrified to generate a magnetic field, so that the magnetorheological material filling body is converted into a semi-solidified state or a solidified state; the whole insertion part is shaped and has certain structural strength, so that after a catheter is inserted, the insertion part can replace a core rod to pick up the anorexia cartilage to expose the glottis, and the problem that in the related technology, the operation convenience is poor due to the fact that the core rod needs to be inserted first and then an endoscope needs to be inserted is solved.

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 tube into the trachea or bronchus through the mouth or nose and the glottis. This technology can provide the best conditions for airway patency, ventilation and oxygen supply, and airway suction. It is an important measure to rescue patients with respiratory dysfunction.

[0003] In the related art, during the intubation process, a mandrel is usually inserted into the catheter to make it hard. This hardening effect helps the operator to lift the epiglottis cartilage more easily, thereby exposing the glottis more easily and inserting the catheter smoothly. After the catheter is inserted, the mandrel is usually removed to insert an endoscope to facilitate intuitive observation of the trachea and bronchi, including the state of the mucosa, airway patency, the presence of foreign matter or tumors, etc., so as to accurately judge the patient's condition and formulate a treatment plan. However, this method of replacing and inserting the mandrel and endoscope has the disadvantage of poor operational convenience. Summary of the invention

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

[0005] In order to solve the above problems, the present invention adopts the following technical solutions: In a first aspect, the present application provides an insertion portion, which is applied to an endoscope, and the disclosed insertion portion includes an inner tube, an outer tube, an electromagnetic coil and a magnetorheological material filling body; wherein: the outer tube is sleeved on the outside of the inner tube to form a containing gap between the two, and the containing gap extends from the distal end of the insertion portion to the proximal end of the insertion portion, and the magnetorheological material filling body is filled in the containing gap; the electromagnetic coil is arranged in the insertion portion, and the electromagnetic coil is extended along the axial direction of the insertion portion, and the electromagnetic coil is configured to generate a magnetic field when power is supplied, so that the magnetorheological material filling body changes from a flowing state to a semi-solidified state or a solidified state.

[0006] Furthermore, the inserting portion further comprises a supporting member, and the supporting member is arranged on the inner side of the inner tube to support the inner tube, or the supporting member is embedded in the side wall of the inner tube.

[0007] Furthermore, the support member is a spiral tube, or the support member is a braided mesh tube.

[0008] Furthermore, along the extension direction of the insertion portion, the inner tube and the outer tube are connected at intervals to form a plurality of first fixing positions.

[0009] Furthermore, the insertion portion also includes a traction rope, the distal end of which is connected to the inner side of the inner tube via a second fixing position, and the second fixing position corresponds to the first fixing position at the distal end.

[0010] Furthermore, the inner side of the inner tube is also provided with a plurality of restraining positions distributed along its axial direction, one restraining position is provided corresponding to one first fixing position, the traction rope axially passes through the restraining position, and the restraining position is configured to radially restrain the traction rope.

[0011] Further, the first fixing position is at least partially covered by 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 part is greater than the first distance; and / or the pitch of the electromagnetic coil is a first distance, and the spacing between two adjacent first fixing positions is less than or equal to three times the first distance.

[0012] Further, there is one electromagnetic coil; or, there are at least two electromagnetic coils distributed axially along 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 to an electrical conductor.

[0013] Furthermore, the insertion part also includes a sleeve, which is connected to the inner side of the inner tube, and the portion of the insertion part distributed at the distal end of the sleeve constitutes an active bending segment, and the active bending segment has at least two control segments.

[0014] In a second aspect, the present application also provides an endoscope, comprising an operating handle and the aforementioned insertion portion, wherein the proximal end of the insertion portion is connected to the operating handle.

[0015] Furthermore, in the case where there are at least two electromagnetic coils, an indicator light corresponding to the electromagnetic coil is provided on the operating handle, and the indicator light is configured to light up when the electromagnetic coil is conducting, and to go out when the electromagnetic coil is de-energized.

[0016] Furthermore, the operating handle is provided with an electrical conductor and multiple electrical contact points, the electrical conductor is connected to a power source, the multiple electrical contact points surround the electrical conductor, and each of the electrical contact points is connected to the electromagnetic coil via an electrical conductor; the operating handle is also provided with a knob, and the knob is configured to sequentially conduct the electrical conductor and the multiple electrical contact points when rotated.

[0017] The technical solution adopted by the present invention can achieve the following beneficial effects: The insertion part and endoscope of the present application, when the electromagnetic coil is not energized, the magnetorheological material filling body is in a flowing state, and the operator can bend the insertion part to achieve the desired bending state, and then energize the electromagnetic coil to generate a magnetic field, so that the magnetorheological material filling body is converted into a semi-solidified state or a solidified state, so that the entire insertion part is shaped and has a certain structural strength, so that after the catheter is inserted, it can replace the core rod to lift the epiglottis cartilage to expose the glottis, which solves the problem of poor operating convenience in the related technology that requires the core rod to be inserted first and then the endoscope to be inserted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is one of the structural schematic diagrams of the insertion part of the embodiment of the present application; Figure 2 This is the second structural schematic diagram of the insertion part of the embodiment of the present application; Figure 3 This is the third structural schematic diagram of the insertion part of the embodiment of the present application; Figure 4 This is the fourth structural schematic diagram of the insertion portion of the embodiment of the present application; Figure 5 is a schematic structural diagram of an endoscope according to an embodiment of the present application; Figure 6 is a schematic diagram of the distribution of the electrical conductors and electrical contact points in the operating handle according to an embodiment of the present application; Figure 7 It is a schematic diagram of a knob according to an embodiment of the present application.

[0020] In the figure: 10. Operating handle; 110. Indicator light; 120. Electrical conductor; 130. Electrical contact point; 140. Knob; 141. Electrode sheet; 20. Insertion portion; 20a. Control segment; 210. Inner tube; 2110. Second fixed position; 2120. Constraint position; 220. Outer tube; 230. Electromagnetic coil; 240. Magnetorheological material filling body; 250. Accommodation gap; 260. Support member; 270. First fixed position; 280. Traction rope; 290. Sleeve. DETAILED DESCRIPTION

[0021] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the present invention.

[0022] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0023] In the related art, the catheter inserted into the trachea is usually a soft tube. When performing tracheal intubation, it is usually necessary to insert a core rod into the catheter to keep the catheter in a specific shape so that it has a certain structural strength when inserted, so that the operator can use the catheter to gently lift the epiglottis cartilage, thereby more easily exposing the glottis, so that the catheter can be smoothly inserted into the trachea or bronchus. After the catheter is inserted into the trachea or bronchus, it is necessary to withdraw the core rod backwards, and then insert an endoscope into the catheter so that the distal end of the insertion part of the endoscope can be probed into the trachea or bronchus, so that the doctor can observe the trachea and bronchi, so as to accurately judge the patient's condition and formulate a treatment plan. However, this method of inserting the core rod first and then the endoscope, because it is a two-time insertion method, always has the problems of complicated operation and poor convenience.

[0024] Based on the above situation, the embodiment of the present application provides an insertion portion and an endoscope. The insertion portion provided in the embodiment of the present 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 in lifting the epiglottis cartilage and inserting it into the trachea or bronchus, and then switch to the soft state to ensure the normal use function of the endoscope. Figures 1 to 7 , the insertion part and the endoscope provided in the embodiments of the present application are described in detail through specific embodiments and their application scenarios.

[0025] See also Figure 1The embodiment of the present application discloses an insertion portion 20, which is applied to an endoscope to probe into a human body cavity to observe a lesion site, so as to facilitate doctors to accurately diagnose the patient's disease. Specifically, the disclosed insertion portion 20 includes an inner tube 210, an outer tube 220, an electromagnetic coil 230 and a magnetorheological material filling body 240, wherein the outer tube 220 is sleeved on the outer side of 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 an accommodation gap 250 is formed between the inner tube 210 and the outer tube 220, and the accommodation gap 250 extends from the distal end of the insertion portion 20 to the proximal end of the insertion portion 20, that is, the accommodation gap 250 is at least formed at the distal end portion of the insertion portion 20, and the aforementioned magnetorheological material filling body 240 is filled in the accommodation gap 250.

[0026] 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, which refer to materials that can be deformed under the action of external forces and have soft, bendable or stretchable properties. For example, the inner tube 210 and the outer tube 220 can be tubular components made of rubber materials, soft gum or plastic films. The magnetorheological material filling body 240 is formed of magnetorheological materials, which are materials with magnetostrictive effects, and whose fluidity (or arrangement) can be adjusted by an external magnetic field. For example, the magnetorheological material is a ferromagnetic shape memory alloy, a magnetorheological fluid, a magnetostrictive material, etc. In an embodiment of the present application, the magnetorheological material filling body 240 is filled in the accommodating 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 is deformed by external force, the inner tube 210 and the outer tube 220 can be deformed along with the magnetorheological material filling body 240. That is to say, the distal portion of the insertion part 20 in the non-magnetic field environment can be deformed by external force, so as to facilitate the operator to shape the distal portion of the insertion part 20.

[0027] In the embodiment of the present application, the electromagnetic coil 230 is arranged in the insertion part 20, and the electromagnetic coil 230 is arranged along the axial direction of the insertion part 20. For example, the electromagnetic coil 230 can be formed by spirally winding a conductive metal wire, for example, it can be formed by spirally winding a steel wire, a copper wire or an aluminum wire. The electromagnetic coil 230 can be arranged in the accommodation gap 250 between the inner tube 210 and the outer tube 220, or arranged on the inner side of the inner tube 210, or embedded in the wall of the inner tube 210 or the outer tube 220. In a preferred embodiment, the electromagnetic coil 230 is arranged in 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 characteristic of convenient processing and forming. For the convenience of subsequent writing, the embodiment of the present application takes the electromagnetic coil 230 arranged in the accommodation gap 250 as an example for explanation, and the magnetorheological material filling body 240 at this time can be wrapped around the outside of the electromagnetic coil 230.

[0028] It can be understood that the electromagnetic coil 230 is connected to an electrical conductor, and the electromagnetic coil 230 can be placed in a conductive state or a power-off state through the electrical conductor. When the electromagnetic coil 230 is in a conductive state, the electromagnetic coil 230 can generate a magnetic field, so that the aforementioned magnetorheological material filling body 240 is in a magnetic field environment, and then the fluidity changes, which is specifically manifested in that the magnetorheological material filling body 240 changes from a flowing state to a semi-solidified state or a solidified state. At this time, the entire insertion portion 20 is in a hard state and has a certain structural strength, and it is difficult to occur when an external force acts; 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-solidified state or a solidified state to a flowing state.

[0029] Based on the above technical solution, when the insertion part of the embodiment of the present application is specifically used in tracheal intubation, the electromagnetic coil 230 can be firstly turned off, and the magnetorheological material filling body 240 is in a flowing state, so that the insertion part 20 can be bent and deformed under the action of external force. The operator can place the insertion part 20 into the catheter and bend the catheter so that it can reach the desired bending state, and then the electromagnetic coil 230 can be energized through the electric wire. The electromagnetic coil 230 generates a magnetic field when it is energized, so that the magnetorheological material filling body 240 is converted 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 to easily lift the epiglottic cartilage with it. And then inserted into the trachea or bronchus. Compared with the traditional catheter insertion method, this design can avoid the double insertion of the core rod and the endoscope, so that the catheter and the endoscope can be inserted into place at one time, which is easy to operate; at the same time, after the catheter and the insertion part 20 are inserted into the trachea or bronchus together, the electromagnetic coil 230 can be in a power-off state, and the magnetorheological material filling body 240 at this time resumes the flow state again, so that the entire insertion part 20 can send follow-up bending, and the flexible insertion part 20 can better adapt to the natural curvature of the trachea and bronchi, reducing the stimulation and pain to the patient, and the flexible insertion part can explore smaller bronchi, such as subsegmental and most sub-subsegmental bronchi, which can expand the inspection range of the endoscope.

[0030] In the embodiment of the present application, based on the way in which the accommodation gap 250 is extended from the distal end of the insertion part 20 to the proximal end of the insertion part 20, the distal end portion of the insertion part 20 can be switched between a soft state and a hard state, and the proximal end portion of the insertion part 20 can be either a soft state or a hard state. It should be noted that, in the case where the proximal end portion of the insertion part 20 is divided into a soft state, the extension length of the distal end portion of the insertion part 20 should be sufficient for the operator to use the distal end portion alone to pry up the epiglottic cartilage, that is, when the operator holds the insertion part 20 to pry up the epiglottic cartilage, the portion held by the operator is provided with the magnetorheological material filling body 240.

[0031] During the research process, the inventor discovered that when the electromagnetic coil 230 is arranged in the accommodating gap 250, when the operator bends and shapes the insertion part 20, when the insertion part 20 is deformed by external force, the outer tube 220 is supported by the electromagnetic coil 230, and 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, thereby narrowing the channel of the inner tube 210 or completely blocking it, thereby affecting the normal passage of gas and liquid, and also affecting the insertion of treatment instruments into the trachea or bronchus for surgical operations.

[0032] Based on this situation, in some embodiments of the present application, please refer to Figure 2 The inserting part 20 may further include a support member 260, which is disposed in the inner tube 210 to support the inner tube 210, thereby preventing the inner tube 210 from generating wrinkles and collapsing when subjected to external forces. For example, the support member 260 may be a spiral tube or a braided mesh tube, and the support member 260 may be attached to the inner wall of the inner tube 210, and may be connected and fixed to the inner tube 210 by gluing, or the support member 260 may be embedded in the inner wall of the inner tube 210, and may be formed by hot melting or extrusion so that the inner tube 210 surrounds the support member 260 during molding. This embodiment does not impose specific restrictions 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 bending and molding process of the inserting part 20.

[0033] In some embodiments of this application, see Figure 3 , along the extension direction of the insertion part 20, the inner tube 210 and the outer tube 220 are connected at intervals, and the portion of the inner tube 210 connected to the outer tube 220 forms a first fixing position 270. For example, the inner tube 210 and the outer tube 220 can be connected at intervals 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 collapse, and the inner tube 210 is connected to the outer tube 220 through multiple first fixing positions 270, so that the outer tube 220 can play a certain pulling effect on the inner tube 210 through the first fixing positions 270, thereby preventing the inner tube 210 from collapsing during the bending process, thereby eliminating the aforementioned support member 260; on the other hand, when the electromagnetic coil 230 is not energized, the entire insertion part 20 exhibits hard characteristics at the first fixing position 270, and at the two first fixing positions 270, the outer tube 220 is not energized. 0 presents a soft property. When the insertion portion 20 is subjected to external force, the insertion portion 20 can be deformed and bent to a certain extent in its soft portion. That is to say, through the arrangement of multiple first fixing positions 270, the entire insertion portion 20 forms a structure similar to a riveted snake bone. In this way, by arranging a traction member to pull the distal end portion of the insertion portion 20 to cause active bending (that is, the distal end portion of the insertion portion 20 constitutes an active bending section), it is possible to eliminate the need to arrange an additional snake bone in 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.

[0034] As can be seen from the foregoing, when the inner tube 210 and the outer tube 220 are connected and fixed by 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 optional embodiment of the present application, see Figure 4The insertion portion 20 may further include a traction rope 280, the distal end of which is connected and fixed to the inner tube 210 via a second fixing position 2110. For example, the distal end of the traction rope 280 may be connected to the inner tube 210 by gluing, hot melting, or the like to form a second fixing position 2110, and the second fixing position 2110 corresponds to the first fixing position 270 at the distal end.

[0035] In the embodiment of the present application, in order to enable the distal end portion of the insertion portion 20 to perform the expected bending action under the pulling action of the traction rope 280, see Figure 4 The inner side of the inner tube 210 is also provided with a plurality of restraint positions 2120 distributed along its axial direction. The plurality of restraint positions 2120 are distributed at the proximal end of the second fixed position 2110, and one restraint position 2120 is arranged corresponding to one first fixed position 270. The traction rope 280 axially passes through the restraint position 2120, and the restraint position 2120 is configured to radially restrain 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 end of the insertion part 20 through the restraint position 2120, thereby causing the expected bending action.

[0036] Exemplarily, a plurality of incision groups are arranged on the side wall of the inner tube 210 along its axial direction, each incision group includes two parallel incisions, and the portion of the inner tube 210 between the two incisions is recessed inward to form a restraint position 2120, and the traction rope 280 is movably passed through the restraint position 2120. In this way, the portion of the insertion portion 20 provided with the restraint position 2120 can serve as an 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 between the two first fixed positions 270 as a bending point. When the traction rope 280 is subjected to a pulling force, the active bending section can undergo an expected bending action. By providing the first fixed position 270, the second fixed position 2110 and the plurality of restraint positions 2120, the snake-bone structure provided in the insertion portion of a traditional endoscope can be eliminated, thereby simplifying the structure and production cost of the insertion portion 20 of the endoscope.

[0037] In the embodiment of the present application, at least a portion of the first fixing portion 270 is covered on the electromagnetic coil 230. In this way, the first fixing portion 270 can not only connect and fix the inner tube 210 and the outer tube 220, but also restrain and position the electromagnetic coil 230, thereby effectively preventing the electromagnetic coil 230 from jumping in the axial direction of the insertion portion 20 and improving the stability of the electromagnetic coil 230 in the insertion portion 20.

[0038] In a further technical solution, the pitch of the electromagnetic coil 230 is a first pitch, and the extension length of the first fixed position 270 in the axial direction of the insertion portion 20 is greater than the first distance. In this way, the first fixed position 270 must be wrapped around the electromagnetic coil 230 in the insertion portion 20 and has a larger wrapping distance. Exemplarily, the first fixed position 270 can wrap around 2 to 4 spiral units of the electromagnetic coil 230, thereby further ensuring the stability of the first fixed position 270 and the electromagnetic coil 230 in the insertion portion 20.

[0039] The inventors discovered during the research that if the spacing between the two first fixing positions 270 is too large, during the bending and shaping of the insertion portion 20, based on the fluidity characteristics of the magnetorheological material filler 240 in a non-magnetic field environment, the magnetorheological material filler 240 in a flowing state flows inwardly and outwardly when under pressure, making it easy for the inner tube 210 to bend and deform radially inwardly of the insertion portion 20, while the outer tube 220 to bend and deform radially outwardly of the insertion portion 20. In other words, it is difficult for the insertion portion 20 to bend and deform as expected.

[0040] Based on the above situation, in a further technical solution, the spacing 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 way, during the bending and shaping process, the deformation of the inner tube 210 and the outer tube 220 is relatively small, making it easier for the two to bend toward the same side when subjected to external force, that is, to make the insertion part 20 undergo the expected bending and shaping.

[0041] For further technical solutions, please continue to refer to Figure 4 The insertion part 20 may further include a sleeve 290, which is connected to the inner side of the inner tube 210. For example, the distal end of the sleeve 290 is connected to the inner side of the inner tube 210 by gluing. The aforementioned multiple constraint positions 2120 are distributed at the distal end of the sleeve 290. The traction rope 280 is inserted into the sleeve 290 after passing through the multiple constraint positions 2120. In this way, the portion of the insertion part 20 corresponding to the sleeve 290 constitutes the passive bending section of the insertion part 20, and the portion 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, the portion of the distal end of the insertion part 20 beyond the sleeve 290 in the embodiment of the present application constitutes the active bending section of the insertion part 20. The traction rope 280 is inserted into 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 jumping.

[0042] In some embodiments of the present application, the aforementioned electromagnetic coil 230 may be one, so that when the electromagnetic coil 230 is energized through an electrical conductor, the entire insertion portion 20 is in a relatively hard state, so as to facilitate lifting the epiglottis cartilage and probing into the trachea or bronchus.

[0043] During the research process, the inventors found that when there is only one electromagnetic coil 230, the change in its hardness is relatively simple, and it is difficult to adapt to human cavities of different shapes, sizes and curvatures. During the operation, due to the limitations of hardness adjustment, the doctor may need to maintain a higher hardness during the operation to ensure the stability of the operation, but this will undoubtedly increase the patient's discomfort and pain.

[0044] Based on this situation, in some embodiments of the present application, the electromagnetic coil 230 can also be at least two distributed along the axial direction of the insertion part 20, so as to divide the insertion part 20 into at least two control segments 20a, and the electromagnetic coil 230 in each control segment 20a is connected to an electric wire. Under such a setting, by setting multiple electromagnetic coils 230, multiple parts of the insertion part 20 can be made to present different hardness and softness, that is, some parts can be harder, some parts can be soft and hard all the time, and some parts can be softer. In this way, the doctor can adjust the hardness of each control segment 20a in real time during the operation, and can minimize the patient's discomfort and pain while ensuring the accuracy of the operation. It can be understood that by controlling the magnitude of the current of each electromagnetic coil 230, the hardness of multiple control segments 20a can also be kept consistent, and this embodiment will not be repeated.

[0045] At the same time, during the process of the operator bending and shaping the insertion portion 20, if the bending shapes of other control segments 20a reach the desired bending posture, but 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 has not reached the desired posture to cut off the power and maintain a relatively soft state, and the operator can bend and shape the control segment 20a again, thereby increasing the convenience of operation.

[0046] In a further technical solution, at least two electromagnetic coils 230 are distributed in the active bending section, that is, the active bending section has at least two control segments 20a. For example, the active bending section has two control segments 20a. Under such a setting, after controlling one of the control segments 20a to bend to the desired posture, the electromagnetic coil 230 can be energized to maintain it in the current fixed posture, while the other control segment 20a still remains in a softer adjustable state. The operator can control the other control segment 20a to perform an independent bending action, and can even make the bending of the other control segment 20a opposite to the bending direction of one of the control segments 20a, so that the active bending section can present an S-shaped bending state, that is, the bending radius of the active bending segment is adjustable, and more complex bending actions can be achieved to adapt to the human body cavity, which significantly improves the bending flexibility of the insertion portion 20.

[0047] See also Figure 5 , Figure 6 and Figure 7 The embodiment of the present application further discloses an endoscope, which includes an operating handle 10 and the aforementioned insertion portion 20 , wherein the proximal end of the insertion portion 20 is connected to the operating handle 10 .

[0048] In a further technical solution, when there are at least two electromagnetic coils 230, an indicator light 110 corresponding to the electromagnetic coil 230 is provided on the operating handle 10, and the indicator light 110 is configured to light up when the electromagnetic coil 230 is conducting, and to go out when the electromagnetic coil 230 is powered off. When the insertion portion 20 is being bent and formed, the operator can directly judge the state of the magnetorheological material filling body 240 by observing the state of the indicator light 110 (on or off). This visual feedback is more accurate and faster than the traditional judgment based on hand feel or experience. With the clear indication of the indicator light 110, the operator can more easily avoid misoperation.

[0049] In the examples of this application, please continue to refer to Figure 6 and Figure 7 In the case where there are multiple electromagnetic coils 230, an electrical conductor 120 and multiple electrical contact points 130 are provided on the operating handle 10, wherein the electrical conductor 120 is connected to a power source, multiple electrical contact points 130 surround the electrical conductor 120, and each electrical contact point 130 is connected to the electromagnetic coil 230 through the aforementioned electrical wire. When the electrical conductor 120 is connected to the electrical contact point 130, the electromagnetic coil 230 is in a conductive state.

[0050] Specifically, the operating handle 10 is also provided with a knob 140, and an electrode sheet 141 is provided on the knob 140. When the knob 140 is turned, the electrode sheet 141 can sequentially conduct the electrical conductor 120 and the plurality of electrical contacts 130, and the electrode sheet 141 can simultaneously conduct all the electrical contacts 130 and the electrical conductor 120. It should be noted that when the knob 140 is turned, the first electromagnetic coil 230 to be conducted is the first electromagnetic coil 230 at the proximal end of the insertion part 20, and as the knob 140 is turned, the electromagnetic coils 230 at the distal end are sequentially conducted, so that the proximal portion that hardens first can provide stable support for the distal portion that hardens later.

[0051] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the 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 reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0052] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An insertion portion, applied to an endoscope, characterized in that: It comprises an inner tube (210), an outer tube (220), an electromagnetic coil (230) and a magnetorheological material filling body (240); wherein: The outer tube (220) is sleeved on the outer side of the inner tube (210), and a containing gap (250) is formed between the two, and the containing gap (250) extends from the distal end of the insertion portion to the proximal end of the insertion portion, and the magnetorheological material filling body (240) is filled in the containing gap (250); The electromagnetic coil (230) is disposed in the insertion portion and is extended along the axial direction of the insertion portion. The electromagnetic coil (230) is configured to generate a magnetic field when powered, so that the magnetorheological material filling body (240) changes from a flowing state to a semi-cured state or a cured state.

2. The insertion portion according to claim 1, characterized in that: It also includes a support member (260), wherein the support member (260) is arranged on the inner side of 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 portion according to claim 2, characterized in that: The support member (260) is a spiral tube, or the support member (260) is a braided mesh tube.

4. The insertion portion according to claim 1, characterized in that: Along the extension direction of the insertion portion, the inner tube (210) and the outer tube (220) are connected at intervals to form a plurality of first fixing positions (270).

5. The insertion portion according to claim 4, characterized in that: It also includes a traction rope (280), the distal end of the traction rope (280) being connected to the inner side of the inner tube (210) via a second fixing position (2110), and the second fixing position (2110) corresponds to the first fixing position (270) at the distal end; The inner side of the inner tube (210) is also provided with a plurality of restraining positions (2120) distributed along its axial direction, one restraining position (2120) is provided corresponding to one first fixing position (270), the traction rope (280) axially passes through the restraining position (2120), and the restraining position (2120) is configured to radially restrain the traction rope (280).

6. The insertion portion according to claim 5, characterized in that At least a portion of the first fixing portion (270) is covered by the electromagnetic coil (230); And / or, the pitch of the electromagnetic coil (230) is a first distance, and the extension 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.

7. The insertion portion according to claim 5, 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, so as to divide the insertion portion into at least two control segments (20a), and the electromagnetic coil (230) in each control segment (20a) is respectively connected to an electrical conductor.

8. The insertion portion according to claim 7, characterized in that: It also includes a sleeve (290), the sleeve (290) is connected to the inner side of the inner tube (210), and the portion of the insertion portion distributed at the distal end of the sleeve (290) constitutes an active bending segment, and the active bending segment has at least two control segments (20a).

9. An endoscope, characterized in that: It comprises an operating handle (10) and an insertion portion (20) according to any one of claims 1 to 7, wherein the proximal end of the insertion portion (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 provided on the operating handle (10), and the indicator light (110) is configured to light up when the electromagnetic coil (230) is conducting, and to go out when the electromagnetic coil (230) is de-energized.

10. The endoscope according to claim 9, characterized in that The operating handle (10) is provided with an electrical conductor (120) and a plurality of electrical contact points (130), the electrical conductor (120) is connected to a power source, the plurality of electrical contact points (130) surround the electrical conductor (120), and each of the electrical contact points (130) is connected to the electromagnetic coil (230) via an electrical conductor; The operating handle (10) is also provided with a knob (140), and the knob (140) is configured to sequentially conduct the electrical conductor (120) and the plurality of electrical contact points (130) when rotated.

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