Capsule endoscope

Abstract

The invention belongs to the technical field of medical equipment, and provides a capsule endoscope which comprises a magnet assembly and an anchoring assembly. The anchoring assembly comprises a rotating part, a plurality of anchoring parts and a positioning part, the rotating part is connected to the magnet assembly and synchronously rotates with the magnet assembly, and the positioning part is inserted into the rotating part; wherein the rotating part is provided with a plurality of first rails which are arranged in the axial direction, the positioning part is provided with a plurality of grooves in the axial direction, and one end of the anchoring part is embedded in the grooves and is buckled in the first rails; the magnet assembly can drive the rotating part to rotate forwards or backwards relative to the protective shell so as to drive the anchoring parts to synchronously move along the corresponding first rails to expand or contract relative to the protective shell. The technical problem that in the prior art, a capsule endoscope is complex in structure is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of medical equipment, and in particular to a capsule endoscope. Background Art

[0002] A capsule endoscope is a medical device used to examine the digestive tract of the human body. It can be swallowed by the patient. The camera inside it can observe the situation in the digestive tract and transmit images to the doctor in real time for diagnosis. Among them, the anchoring mechanism has an important influence on the performance and effect of the capsule endoscope during its movement in the digestive tract. The anchoring mechanism can prevent the capsule endoscope from shaking and deviating, thereby ensuring that the doctor can accurately observe the lesion area and collect tissue samples. At the same time, the design of the anchoring mechanism also takes into account the safety and comfort of the patient to avoid damaging the digestive tract tissue or causing other complications.

[0003] In general, capsule endoscopes with anchoring functions mainly include internal drive and external drive. The internally driven capsule endoscope integrates the drive and anchoring mechanism inside. Usually, the internally driven anchoring mechanism uses a deployable small arm, a needle or a similar mechanical structure to fix on the wall of the digestive tract, and the internal structure is complex. The externally driven capsule endoscope relies on an externally applied magnetic field to realize the operation of the anchoring mechanism, so that the capsule endoscope has a smaller size and weight. After applying the external magnetic field, the existing capsule endoscope with anchoring function uses the interaction between two permanent magnets to complete the extension of the anchoring mechanism. This method requires multiple magnets and occupies a large amount of internal space of the capsule. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a capsule endoscope to solve the technical problem of the complex structure of the capsule endoscope in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a capsule endoscope, including a magnet assembly and an anchor assembly; the anchor assembly includes a rotating member, a plurality of anchor members and a positioning member, the rotating member is connected to the magnet assembly and rotates synchronously with the magnet assembly, and the positioning member is inserted into the rotating member; wherein, the rotating member is provided with a plurality of first tracks arranged along the axial direction, the positioning member is provided with a plurality of grooves along the axial direction, and one end of the anchor member is both embedded in the groove and snapped into the first track; the magnet assembly can drive the rotating member to rotate forward or reversely relative to the protective shell, so as to drive each of the anchor members to move synchronously along their respective corresponding first tracks and expand or contract relative to the protective shell.

[0006] The technical solution provided by this embodiment has the following beneficial effects compared with the prior art: the external magnet affects the magnet assembly, so that the rotating member rotates relative to the protective shell, and then the anchor slides along the first track, so as to achieve the effect of opening or contracting the anchor. When the anchor is opened, it can be used to complete the anchoring in the body; when the anchor is contracted, it ensures that the capsule endoscope can smoothly leave the patient's digestive tract. The structure is simple and has adjustability and flexibility.

[0007] In one embodiment provided by the present application, the rotating member is further provided with a second track for limiting the rotation angle of the rotating member, and the second track is arranged along the circumference of the rotating member and is arranged away from the first track. In this way, the rotation angle of the rotating member relative to the positioning member is limited, thereby controlling the expansion / contraction range of the anchor member and improving the safety of the capsule endoscope.

[0008] In one embodiment provided by the present application, each of the first tracks is arrayed at equal intervals on the rotating member, each of the grooves is arrayed at equal intervals on the positioning member, and each of the first tracks corresponds to each of the grooves one by one; wherein only one point of each first track corresponds to a point in each groove. Thus, the equal spacing arrangement enables each anchor to be subjected to the same force when expanded, improves the stability of the anchor when expanded / contracted, and facilitates the inspection and treatment of the digestive tract in the anchored and expanded state.

[0009] In one embodiment provided by the present application, the rotating member is provided with a plurality of second tracks, the second tracks are arc-shaped groove tracks, each of the second tracks is respectively connected with the positioning member by snapping, and the plurality of second tracks are arrayed at equal intervals on the same circumference of the rotating member. In this way, the rotation angle of the rotating member is better limited, a more stable rotation direction guide is provided for the rotating member, and the rotation is smoother.

[0010] In one embodiment provided by the present application, the magnet assembly includes a base and a magnet; the base includes a mounting part with a hollow interior and a central axis connected to the mounting part, the magnet is placed in the mounting part, and the central axis passes through the rotating part; a slot is provided on the central axis, and a limit block is provided at the center hole of the rotating part, the slot and the limit block are matched in a concave-convex manner, and the rotation of the magnet assembly drives the rotating part to rotate synchronously. In this way, the magnet is prevented from affecting the use effect due to extrusion deformation during assembly.

[0011] In one embodiment provided by the present application, the anchoring member includes a resisting portion and a connecting portion, the connecting portion is provided with a protrusion; the protrusion is snapped into the first track and moves in a curve along the first track; the connecting portion is embedded in the groove and moves in a straight line along the groove. In this way, by providing the resisting portion, the anchoring member will not cause discomfort to the human body when performing expansion anchoring.

[0012] In one embodiment provided by the present application, the capsule endoscope further comprises a protective shell, and the magnet assembly and the anchor assembly are accommodated inside the protective shell. In this way, it is more convenient and humane for the patient to swallow the capsule endoscope without scratching the patient's digestive tract.

[0013] In one embodiment provided by the present application, the protective shell includes a first shell, a second shell, a first cover and a second cover; the first shell is sleeved on the outer peripheral side of the central axis through a bearing, the magnet assembly is snapped into the first shell, and the first cover is snapped into the first shell; the second shell is plugged into the positioning member and snapped into the second cover. In this way, it is easy for patients to swallow, and the magnet assembly is prevented from directly contacting the patient's digestive tract, thereby improving the safety factor of the use of the capsule endoscope.

[0014] In one embodiment provided by the present application, the first shell is provided with a through hole and a plurality of protrusions for interference fit between the first shell and the mounting member; the through hole is used to assemble the first shell to the outer peripheral side of the bearing, and the plurality of protrusions are arranged in an array on the inner wall of the first shell. In this way, the base can be fixed in position in the first shell and will not shake left and right, which would affect the use of the capsule endoscope.

[0015] In one embodiment provided by the present application, the second housing is provided with a plurality of connection holes, the positioning member is provided with a plurality of limit posts, and the limit posts are inserted into the connection holes. Thus, by providing a one-to-one correspondence between the plurality of mounting holes and the plurality of limit posts, the second housing and the positioning member will not rotate relative to each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 A schematic diagram of the overall structure of the capsule endoscope in a contracted state in an embodiment provided in the present application;

[0018] Figure 2 A schematic diagram of the overall structure of the capsule endoscope in an expanded state according to an embodiment of the present application;

[0019] Figure 3 This is a schematic diagram of the overall structure of the capsule endoscope in the contracted state of the anchoring assembly in the embodiment provided in the present application;

[0020] Figure 4This is a schematic diagram of the overall structure of the positioning member of the capsule endoscope in the embodiment provided in the present application;

[0021] Figure 5 A schematic diagram of the overall structure of an anchoring member of a capsule endoscope in an embodiment provided in the present application;

[0022] Figure 6 A schematic diagram of the overall structure of the anchoring assembly of the capsule endoscope in the embodiment provided in the present application in an expanded state at one angle;

[0023] Figure 7 A schematic diagram of the overall structure of the capsule endoscope in an expanded state from another angle in an embodiment provided by the present application;

[0024] Figure 8 This is a schematic diagram of the overall structure of the base of the capsule endoscope in the embodiment provided in the present application;

[0025] Fig. 9 This is a schematic diagram of the overall structure of the first shell of the capsule endoscope in the embodiment provided in the present application;

[0026] Fig.10 This is a schematic diagram of the overall structure of the second shell of the capsule endoscope in the embodiment provided in this application;

[0027] Fig.11 This is an exploded view of the overall structure of the capsule endoscope in the embodiment provided in this application.

[0028] Among them, the reference numerals in the figure are:

[0029] 100-protective shell; 110-first shell; 111-connection hole; 112-through hole; 113-bump; 120-first cover; 130-second shell; 131-installation hole; 140-second cover;

[0030] 200-magnet assembly; 210-bearing; 220-base; 221-mounting piece; 222-center axis; 222a-slot; 230-magnet;

[0031] 300-anchor assembly; 310-rotating member; 311-first track; 312-second track; 313-limiting block; 320-anchor member; 321-interference portion; 322-connecting portion; 322a-protrusion; 330-positioning member; 331-groove; 332-connecting column; 333-limiting column. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0035] Capsule endoscope is a medical device used to examine the digestive tract inside the human body. The capsule endoscope can be swallowed by the patient, and the camera inside it can observe the situation in the digestive tract and transmit the image to the doctor in real time for diagnosis. During the movement of the capsule endoscope in the digestive tract, the anchoring mechanism has an important impact on the performance and effect of the capsule endoscope. It ensures the stable positioning of the capsule endoscope in the digestive tract and provides doctors with clear and accurate images for diagnosis and treatment. By providing stability and guidance, the anchoring mechanism can prevent the shaking and deviation of the capsule endoscope, thereby ensuring that the doctor can accurately observe the lesion area and collect tissue samples. At the same time, the design of the anchoring mechanism also takes into account the safety and comfort of the patient. It ensures that the capsule endoscope will not damage the digestive tract tissue during movement, and reduces the patient's discomfort, avoiding damage to the digestive tract tissue or causing other complications.

[0036] In the prior art, capsule endoscopes with anchoring functions are mainly internally driven and externally driven. The internally driven capsule endoscope integrates a driver and an anchoring mechanism inside. This structural design uses an internal motor, spring or other driving device to achieve the extension and retraction of the anchoring mechanism. Usually, the internally driven anchoring mechanism uses a deployable small arm, a thorn needle or a similar mechanical structure to fix on the wall of the digestive tract, and the internal structure is complex; the externally driven capsule endoscope relies on an externally applied magnetic field to achieve the operation of the anchoring mechanism, so that the capsule endoscope has a smaller size and weight. After applying an external magnetic field, the existing capsule endoscope with an anchoring function uses the interaction between two permanent magnets to complete the extension of the anchoring mechanism, but this method requires multiple magnets, which occupies a large amount of internal space in the capsule.

[0037] In view of this, the present application is proposed, which utilizes a magnet to convert the rotational motion of the magnet into the linear motion of the anchor, and has the advantages of simple structure, high space utilization, low manufacturing cost, high reliability, etc.

[0038] In one embodiment of the present application, a capsule endoscope is provided. Please refer to Figures 1 to 3 The endoscope includes a magnet assembly 200 and an anchor assembly 300: the anchor assembly 300 includes a rotating member 310, a plurality of anchor members 320 and a positioning member 330, the rotating member 310 is connected to the magnet assembly 200 and rotates synchronously with the magnet assembly 200, and the positioning member 330 is plugged into the rotating member 310; wherein, the rotating member 310 is provided with a plurality of first tracks 311 arranged along the axial direction of the rotating member 310, the positioning member 330 is provided with a plurality of grooves 331 along the axial direction, and one end of the anchor member 320 is both embedded in the groove 331 and snapped into the first track 311; the magnet assembly 200 is affected by the external magnetic field to drive the rotating member 310 to rotate forward or reverse relative to the protective shell 100, so as to drive each anchor member 320 to move synchronously along their respective corresponding first tracks 311 and expand or contract relative to the protective shell.

[0039] Magnet assembly 200 (see Fig.11 ) refers to a component having a magnetic field for magnetically cooperating with an external magnet and used for assembly with the protective shell 100. Specifically, a magnetic component is provided inside the magnet assembly 200, and the magnetic component cooperates with the external magnet. When a rotating external magnetic field is applied, the magnet assembly 200 rotates due to the magnetic field force, thereby driving the magnet assembly 200 in the capsule endoscope to rotate accordingly. For example, when the external magnet rotates 50° clockwise, the magnet assembly 200 rotates 30°-50° clockwise accordingly.

[0040] The anchoring component 300 refers to a component used for expanding and supporting the human digestive tract after the capsule endoscope enters the human digestive tract and anchors at a specific position. When the capsule endoscope needs to move forward or backward along the digestive tract, the anchoring component 300 is in a contracted state. At this time, the capsule endoscope is in the shape of a capsule, which is small and easy to move in the digestive tract. When the capsule endoscope needs to be anchored at any position in the digestive tract, the anchoring component 300 is in an expanded state. The anchoring component 300 expands and closely contacts the inner wall of the digestive tract, making it easier for the endoscope to inspect in the intestine and capture images and data.

[0041] Among them, refer to Figure 1 and Figure 2 The anchor assembly 300 includes a rotating member 310 , a plurality of anchor members 320 and a positioning member 330 .

[0042] The rotating member 310 refers to a member that can rotate relatively.

[0043] The anchor 320 refers to a component that can expand outward to open the digestive tract, and can freely shrink into a capsule shape to facilitate the movement of the capsule endoscope in the digestive tract. Figure 1 and Figure 2 The expansion means that the anchor 320 moves to a certain position along the direction of the center of the rotating member 310, at which time each anchor 320 protrudes outside the rotating member 310, and at this time the diameter of the ring formed by each anchor 320 is larger than the diameter of the rotating member 310, and the protruding part is used to support and stabilize the intestine. The contraction means that the anchor 320 moves to a certain position along the direction toward the center of the rotating member 310, at which time the diameter of the ring formed by each anchor 320 is less than or equal to the diameter of the rotating member 310.

[0044] The positioning member 330 is a component used to limit the rotation angle of the rotating member 310 and then control the expansion / contraction degree of the anchoring member 320 .

[0045] It should be noted that the positioning member 330, the rotating member 310 and the anchoring member 320 are all made of high-precision processed aluminum alloy materials. The anchoring assembly 300 needs to have high hardness and rigidity, excellent mechanical properties and corrosion resistance, so as to provide stable support in the intestine.

[0046] Specifically, the rotating member 310 is connected to the magnet assembly 200 in a variety of ways. The two ends of the connecting member can be fixedly connected to the rotating member 310 and the magnet assembly 200, or they can be connected in an irregular matching and plugging manner, which is not specifically limited here. In this way, after the external magnet drives the magnet assembly 200 to rotate, the magnet assembly 200 will drive the rotating member 310 to rotate with it. Figure 3The rotating member 310 is provided with a plurality of first tracks 311 arranged along the axial direction of the rotating member 310, the positioning member 330 is provided with a plurality of grooves 331 along the axial direction, and one end of the anchoring member 320 is both embedded in the groove 331 and snapped into the first track 311. It should be noted that, although the positioning member 330 is plugged into the rotating member 310, the positioning member 330 does not rotate relative to the rotating member 310. After the external magnet drives the magnet assembly 200 to rotate, the magnet assembly 200 will drive the rotating member 310 to rotate therewith, and the anchoring member 320 will simultaneously make a curved motion along the first track 311 and a linear motion along the groove 331. For example: the magnet assembly 200 drives the rotating member 310 to rotate in the forward direction, driving each anchoring member 320 to synchronously move along the corresponding first track 311 and expand relative to each other. The magnet assembly 200 drives the rotating member 310 to rotate in the opposite direction, thereby driving each anchoring member 320 to move synchronously along the corresponding first track 311 and shrink relatively.

[0047] The technical solution provided in this embodiment has the following beneficial effects compared to the prior art: by influencing the magnet assembly 200 with an external magnet, the rotating member 310 rotates relative to the protective shell 100, and then the anchor member 320 slides along the first track 311, thereby achieving the effect of opening or contracting the anchor member 320. One end of the anchor 320 is both embedded in the groove 331 and snapped into the first track 311, and the first track 311 is set on the rotating member 310, and the groove 331 is set on the positioning member 330. Under the influence of the external magnetic field, the rotating member 310 will rotate relatively. In order to meet the preset result and allow the anchor 320 to move axially to achieve the effect of expansion or contraction, the first track 311 and the groove 331 need to be an arc and a straight line, so that the anchor assembly 300 drives the rotating member 310 to rotate under the external magnetic field, and the anchor 320, the rotating member 310 and the positioning member 330 are linked, so that a simple structure is used in the capsule endoscope, which reduces the use of parts and reduces the production cost. At the same time, the structure is simple to assemble and easy to install. Furthermore, through the above-mentioned linkage structure, the anchoring range of the capsule endoscope can be enlarged, which is convenient for doctors to treat or detect. When the anchor 320 is retracted, it ensures that the capsule endoscope can smoothly leave the patient's digestive tract. The mechanical structure is simple and has adjustability and flexibility. At the same time, because of the telescopic structure, it occupies less space. At the same time, in this embodiment, only one magnet is needed to achieve the above effect, which reduces the number of magnets used compared to the prior art, thereby further reducing the production cost.

[0048] In one embodiment provided in the present application, the rotating member 310 is further provided with a second track 312 arranged along the circumference of the rotating member 310 , and one end of the positioning member 330 is buckled in the second track 312 to limit the rotation angle of the rotating member 310 .

[0049] Please refer to Figure 3 , Figure 6 and Figure 7 The second track 312 refers to a feature for specifically limiting the rotation angle of the rotating member 310 and guiding the rotation direction of the rotating member 310 to prevent the rotating member 310 from being too large, causing a large expansion range of the anchor member 320, causing discomfort in the patient's digestive tract, affecting the digestive tract examination and the patient's intestinal safety.

[0050] Reference Figure 4 The positioning member 330 is provided with a connecting column 332, which protrudes from the surface of the positioning member 330 and is buckled into the second track 312, and is used to limit the rotation angle of the rotating member 310. The two ends of the second track 312 correspond to two critical values, one corresponding to the position where the anchor 320 expands to the maximum range, and the other corresponding to the position where the anchor 320 contracts to the minimum range. The number of connecting columns 332 can be one or more, which is not specifically limited here, but the number of connecting columns 332 is consistent with the second track 312.

[0051] It should be noted that, in order to improve the success rate and safety of the capsule endoscope, in the present embodiment, the first track 311 and the second track 312 are arranged away from each other and do not interfere with each other.

[0052] In this embodiment, a second track 312 is provided on the rotating member 310, and the second track 312 is engaged with the connecting column 332 of the positioning member 330 to limit the rotation angle of the rotating member 310 relative to the positioning member 330, thereby controlling the expansion / contraction range of the anchoring member 320 and improving the safety of the capsule endoscope.

[0053] In one embodiment of the present application, each first track 311 is arrayed at equal intervals on the rotating member 310, and each groove 331 is arrayed at equal intervals on the positioning member 330, and each first track 311 corresponds to each groove 331 in position one by one; wherein at least a portion of each first track 311 overlaps with at least a portion of a position in each groove 331.

[0054] In this embodiment, the first track 311 and the groove 331 are arranged at equal intervals. The equal intervals enable each anchor 320 to be subjected to the same force during expansion, thereby improving the stability of the anchor 320 during expansion / contraction and facilitating the inspection and treatment of the digestive tract in the anchored and expanded state.

[0055] It should be noted that at least part of each first rail 311 overlaps with at least part of the position in each groove 331. Through the above explanation, the first rail 311 and the groove 331 are respectively an arc-shaped rail and a straight rail. The first rail 311 and the groove 331 are equivalent to two intersecting lines, and the intersection point is the position of the anchor 320. When the anchor 320 moves in a straight line along the groove 331, the maximum range of movement is limited by the first rail 311.

[0056] The anchor 320 can move along the first track 311 and the groove 331 at the same time due to the force exerted by the first track 311 and the groove 331 on the anchor 320 .

[0057] In one embodiment of the present application, the rotating member 310 is provided with a plurality of arc-shaped second rails 312 , each second rail 312 is snap-connected to the positioning member 330 , and the plurality of second rails 312 are arrayed at equal intervals on the same circumference of the rotating member 310 .

[0058] In this embodiment, the plurality of second rails 312 and the connecting posts 332 snap-connected thereto have two functions:

[0059] First, the rotation angle of the rotating member 310 is better limited.

[0060] Secondly, it provides a more stable rotation direction guide for the rotating member 310, making the rotation smoother.

[0061] The plurality of second rails 312 are arrayed at equal intervals on the same circumference of the rotating member 310 , so that the force on each connecting column 332 is more uniform and stable.

[0062] In one embodiment provided in this application, refer to Figure 8 and Fig.11 The magnet assembly 200 includes a base 220 and a magnet 230; the base 220 includes an internally hollow mounting member 221 and a central axis 222 connected to the mounting member 221, the magnet 230 is placed in the mounting member 221, and the central axis 222 passes through the rotating member 310; a slot 222a is provided on the central axis 222, and a limit block 313 is provided at the center hole of the rotating member 310, the slot 222a and the limit block 313 are matched in a concave-convex manner, and the rotation of the magnet assembly 200 drives the rotating member 310 to rotate synchronously.

[0063] In this embodiment, in order to facilitate the replacement of the magnet 230 and ensure that the magnet 230 is not squeezed and deformed during the interference fit, refer to Figure 8 The magnet assembly 200 includes a base 220 and a magnet 230. If the magnetism of the magnet 230 is found to be weakened during use, the problem can be solved by replacing the magnet 230. At the same time, the base 220 can prevent the magnet 230 from being squeezed and deformed during assembly, thereby affecting the use effect.

[0064] Preferably, the magnet 230 is a radially magnetized cylindrical permanent magnet, and the magnet 230 and the base 220 are interference fit.

[0065] In this embodiment, an implementation method of connecting the magnet assembly 200 and the rotating member 310 is proposed, so that the magnet assembly 200 and the rotating member 310 are coaxially connected and can achieve synchronous rotation.

[0066] Specifically, refer to Figure 7 and Figure 8 The base 220 includes a mounting member 221 with a hollow interior and a central shaft 222 connected to the mounting member 221. The central shaft 222 is provided with a slot 222a, and the slot 222a is provided only when it is assembled with the rotating member 310. The shape of the slot 222a can be any irregular shape, such as a triangle, a rectangle or a trapezoid, etc., which is not specifically limited here, but the shape of the slot 222a needs to be consistent with the shape of the stopper 313 of the rotating member 310, so that the central shaft 222 can extend into the central hole of the rotating member 310.

[0067] To facilitate explanation of the principle and structure, in the drawings provided in this embodiment, the shapes of the slot 222a and the limit block 313 are taken as rectangles. The slot 222a of the center shaft 222 is aligned with the limit block 313 at the center hole of the quasi-rotating member 310 and is inserted into the center hole of the quasi-rotating member 310. When the base 220 rotates, the center shaft 222 drives the rotating member 310 to rotate therewith.

[0068] In one embodiment provided in this application, refer to Figure 5 The anchor 320 includes a resisting portion 321 and a connecting portion 322 , wherein the connecting portion 322 is provided with a protrusion 322 a ; the protrusion 322 a is embedded in the first track 311 , and moves in a curve along the first track 311 ; the connecting portion 322 is embedded in the groove 331 , and moves in a straight line along the groove 331 .

[0069] The interference part 321 refers to the part of the anchor 320 that is used to directly contact the digestive tract after expansion, or the part of the anchor 320 that is wrapped around the outer peripheral wall of the positioning member 330 after contraction, and forms a part of the capsule endoscope shell with the positioning member 330. The interference part 321 is arc-shaped, and the curvature of the arc can be adaptively wrapped around the outer peripheral wall of the positioning member 330, so that each anchor 320 forms a ring outside the positioning member 330 after contraction. It should be noted that the interference part 321 is an arc-shaped piece with width and thickness, so that when it contacts the human digestive tract after expansion, it will not cause discomfort due to the small force area, and there will be no wind direction due to resistance after the expansion touches the intestine and breaks.

[0070] The connecting portion 322 is a portion that is inserted into the groove 331. The connecting portion 322 cooperates with the groove 331 so that the anchor 320 can move linearly along the groove 331. A protrusion 322a perpendicular to the connecting portion 322 is provided at the end of the connecting portion 322. The protrusion 322a is snapped into the first track 311 and moves in a curve along the first track 311.

[0071] In one implementation of this embodiment, refer to Figure 4 The groove 331 is a stepped groove. The position with a relatively large groove width is used to provide a guide position for the connecting part 322 to slide along the groove 331, and the position with a smaller groove width is used to snap the protrusion 322a, so that one side of the protrusion 322a fits against the surface of the positioning member 330, preventing the anchor 320 from deviating from the movement direction, and constraining all other degrees of freedom of the anchor 320 except along the groove 331.

[0072] In this embodiment, multiple effects can be achieved simultaneously by the anchor member 320 with a simple structure:

[0073] First, the anchoring member 320 can perform linear motion along the groove 331 of the positioning member 330, and can also perform rotational motion along the first track 311 of the rotating member 310, so that only one point on the groove 331 corresponds to a point on the first track 311, and each corresponding point is the motion track of the protrusion 322a;

[0074] Secondly, by providing the resisting portion 321, the anchoring member 320 will not cause discomfort to the human body when performing expansion anchoring;

[0075] Thirdly, by setting the groove 331 as a stepped groove, the movement position of the anchor 320 is further limited, so that the anchor 320 will not get stuck when starting the expansion / contraction movement.

[0076] Specific implementation principle: adopting external magnetic drive mode, by applying a rotating magnetic field externally, the magnet 230 starts to rotate, the magnet 230 drives the base 220 to rotate, the rotating member 310 rotates coaxially with the base 220, so that the protrusion 322a buckled on the rotating member 310 starts to move along the first slide rail 311. At the same time, when the rotating member 310 rotates, the connecting portion 322 of the anchoring member 320 moves along the slide rail of the groove 331 of the positioning member 330 at the same time, driving the linear movement of the anchoring leg. This design enables the anchoring leg to be accurately extended outside the capsule and can be retracted when needed.

[0077] Preferably, the first slide rail 311 of the rotating member 310 is closed, and the groove 331 of the positioning member 330 is open.

[0078] In one embodiment provided in this application, refer to Figure 1The capsule endoscope also includes a protective shell 100 , and the magnet assembly 200 and the anchor assembly 300 are accommodated inside the protective shell 100 .

[0079] The protective shell 100 refers to a main shell of the capsule endoscope which is composed of a plurality of parts and is used to form the capsule endoscope.

[0080] In this embodiment, by adding the protective shell 100 , it can be made more convenient and humane for the patient to swallow the capsule endoscope without scratching the patient's digestive tract.

[0081] In one embodiment provided in this application, refer to Fig.11 The protective shell 100 includes a first shell 110, a first cover 120, a second shell 130, and a second cover 140; the first shell 110 is sleeved on the outer peripheral side of the central axis 222 through a bearing 210, the magnet assembly 200 is snap-fitted into the first shell 110, and the first cover 120 is snap-fitted to the first shell 110; the second shell 130 is inserted into the positioning piece 330 and is snap-fitted to the second cover 140.

[0082] The first shell 110 is a shell that contains the magnet assembly 200, which prevents the magnet assembly 200 from directly contacting the patient's digestive tract, thereby improving the safety factor of the capsule endoscope. It is also used to snap fit with the first cover 120 (and is an interference fit), so that one end of the capsule endoscope has a smooth structure with a guide surface, similar to the shape of a capsule, which is easy for the patient to swallow.

[0083] The second shell 130 is a shell connected to the positioning member 330, which is used to snap fit (and interference fit) with the second cover 140, so that one end of the capsule endoscope has a smooth structure of a guide surface, similar to the shape of a capsule, which is convenient for patients to swallow.

[0084] The bearing 210 can be a plastic bearing or other types of bearings with a certain rigidity and strength. The base 220 rotates under the action of an external magnetic field, and the bearing 210 can withstand the load and torque caused by the rotational motion. The outer peripheral side of the bearing 210 is interference fit with the through hole 112 of the first shell 110, and the inner side wall of the bearing 210 is interference fit with the central axis 222 of the base 220. The central axis 222 is designed and matched between the axis and the hole through the central hole reserved by the rotating member 310, so as to ensure the stability and reliability of the bearing 210, so that the base 220 can smoothly rotate.

[0085] Preferably, the first shell 110, the first cover 120, the second shell 130, and the second cover 140 are manufactured using 3D printing technology and transparent materials to give them good transparency, so that the rotation of the base 220 and the magnet 230 inside the capsule endoscope can be clearly observed.

[0086] Preferably, the first housing 110 may also be equipped with a camera for capturing images so as to observe and record lesions, abnormal conditions or other important information in the digestive tract.

[0087] It should be noted that the connection method between the first shell 110 and the central axis 222 is: the first shell 110 and the bearing 210 are assembled by means of a snap-fit ​​interference fit, the bearing 210 is sleeved on the outside of the central axis 222, and the first shell 110 is sleeved on the outer peripheral side of the bearing 210, and is interference fit with the bearing 210, so that the first shell 110 and the central axis 222 can produce relative rotation.

[0088] Preferably, the first shell 110 and the positioning member 330 are connected in the following manner: a plurality of connection holes 111 are provided on the first shell 110 in the present embodiment, and each connection hole 111 corresponds to each connection column 332 one by one. During assembly, the connection column 332 corresponds to the connection hole 111 one by one and is inserted into the connection hole 111 to realize the positioning relationship between the first shell 110 and the positioning member 330. When the external magnet drives the magnet assembly 200 to rotate, the base 220 drives the rotating member 310 to rotate through the central axis 222, and then the anchoring member 320 can perform linear motion along the groove 331 of the positioning member 330, and can also perform rotational motion along the first track 311 of the rotating member 310. At this time, the first shell 110 and the positioning member 330 are connected through the connection column 332, so the first shell 110 and the positioning member 330 rotate coaxially.

[0089] In this embodiment, the capsule endoscope is formed into an integral shell by providing a first shell 110, a first cover body 120, a second shell 130, and a second cover body 140, which is convenient for patients to swallow and prevents the magnet assembly 200 from directly contacting the patient's digestive tract, thereby improving the safety factor of the capsule endoscope.

[0090] In one embodiment provided in this application, refer to Fig. 9 The first shell 110 is provided with a through hole 112 and a plurality of protrusions 113 for interference fit between the first shell 110 and the mounting member 221; the through hole 112 is used to interference fit the first shell 110 on the outer peripheral side of the bearing 210, and a plurality of protrusions 113 are arranged in an array on the inner wall of the first shell 110.

[0091] Specifically, a plurality of protrusions 113 are provided in the first shell 110, and at least one side of the plurality of protrusions 113 is attached to the bottom wall of the first shell 110 (the bottom wall refers to the inner wall on one side where the magnet assembly 200 is installed), and the diameter of the inscribed circle of the polygon formed by the side edges of the plurality of protrusions 113 (the side edge refers to the side of the protrusion 113 closest to the through hole 112) is smaller than the diameter of the magnet assembly 200, thereby achieving an interference fit effect between the magnet assembly 200 and the first shell 110.

[0092] Preferably, one side of the protrusion 113 contacts the inner wall of the first housing 110 , and another side of the protrusion 113 contacts the bottom wall of the first housing 110 , so as to improve the anti-extrusion force of the protrusion 113 .

[0093] Preferably, the sides of the plurality of protrusions 113 are formed into a circle, and the circle is concentric with the magnet assembly 200 , so as to facilitate the installation of the base 220 and facilitate the central axis 222 to pass through the through hole 112 and connect with the rotating member 310 .

[0094] In this embodiment, a small storage space is formed to accommodate the base 220 by providing a plurality of protrusions 113 , so that the base 220 can be fixed in position in the first shell 110 and will not shake left and right to affect the use of the capsule endoscope.

[0095] In one embodiment provided in this application, refer to Fig.10 The second shell 130 is provided with a plurality of mounting holes 131 , and the positioning member 330 is provided with a plurality of limiting posts 333 , which are inserted into the mounting holes 131 .

[0096] In this embodiment, the second housing 130 is fixed in position by providing a mounting hole 131 on the second housing 130 and plugging and matching with the limiting column 333 on the positioning member 330. By providing a plurality of mounting holes 131 and a plurality of limiting columns 333 in one-to-one correspondence, the second housing 130 and the positioning member 330 will not rotate relative to each other.

[0097] It should be noted that the positioning member 330 has two side surfaces that are arranged opposite to each other, one side surface is provided with a plurality of limiting columns 333, and the other side surface is provided with a plurality of connecting columns 332, the limiting columns 333 are plugged into and matched with the mounting holes 131 to connect the second shell 130 and the positioning member 330, and the connecting columns 332 are matched with the second track 312 to connect the positioning member 330 and the rotating member 310.

[0098] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A capsule endoscope, characterized in that: include: Magnet assembly; An anchoring assembly, comprising a rotating member, a plurality of anchoring members and a positioning member, wherein the rotating member is connected to the magnet assembly, and the positioning member is plugged into the rotating member; Among them, the rotating member is provided with a plurality of first tracks arranged along its axial direction, and the positioning member is provided with a plurality of grooves along its axial direction, and one end of the anchor member is both embedded in the groove and snapped into the first track; the magnet assembly is affected by the external magnetic field to drive the rotating member to rotate forward or reverse, so as to drive each of the anchor members to move synchronously along their respective corresponding first tracks to expand or contract.

2. The capsule endoscope according to claim 1, characterized in that: The rotating member is also provided with a second track for limiting the rotation angle of the rotating member. The second track is arranged along the circumferential direction of the rotating member and is arranged to avoid the first track.

3. The capsule endoscope according to claim 2, characterized in that: The rotating member is provided with a plurality of the second tracks, and the plurality of the second tracks are arrayed at equal intervals on the same circumference of the rotating member; the second tracks are arc-shaped groove tracks, and each of the second tracks is respectively snap-connected with the positioning member.

4. The capsule endoscope according to claim 1, characterized in that: The first tracks are arrayed on the rotating member at equal intervals, the grooves are arrayed on the positioning member at equal intervals, and the first tracks correspond to the grooves one by one in position; Wherein, at least a portion of each of the first tracks overlaps with at least a portion of a position in each of the grooves.

5. The capsule endoscope according to any one of claims 1 to 4, characterized in that: The magnet assembly comprises a base and a magnet; The base includes a mounting member with a hollow interior and a central shaft connected to the mounting member, the magnet is arranged in the mounting member, and the central shaft passes through the rotating member; A clamping groove is arranged on the central shaft, and a limiting block is arranged at the central hole of the rotating member, and the clamping groove is engaged with the limiting block.

6. The capsule endoscope according to claim 5, characterized in that: The anchoring member comprises a resisting portion and a connecting portion, and the connecting portion is provided with a protrusion; The first track is an arc-shaped groove track, the protrusion is buckled in the first track, and moves in a curve along the first track; The groove is a linear groove rail, the connecting portion is embedded in the groove, and moves linearly along the groove.

7. The capsule endoscope according to claim 5, characterized in that: The capsule endoscope further comprises a protective shell, wherein the magnet assembly and the anchor assembly are accommodated inside the protective shell.

8. The capsule endoscope according to claim 7, characterized in that: The protective shell includes a first shell, a second shell, a first cover and a second cover; The first shell is sleeved on the outer peripheral side of the central axis through a bearing, the magnet assembly is buckled in the first shell, and the first cover is buckled and connected to the first shell; The second shell is plugged into the positioning piece and is snap-connected with the second cover.

9. The capsule endoscope according to claim 8, characterized in that: The first shell is provided with a through hole and a plurality of protrusions for forming an interference fit between the first shell and the mounting member; The through hole is used to assemble the first housing on the outer peripheral side of the bearing, and the plurality of projection arrays are arranged on the inner wall of the first housing.

10. The capsule endoscope according to claim 8, characterized in that: The second shell is provided with a plurality of connection holes, the positioning member is provided with a plurality of limit posts, and each of the limit posts is plugged into each of the connection holes respectively.

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