Novel magnetic control capsule endoscope with double-needle biopsy function

Abstract

The utility model relates to the technical field of capsule endoscopes, and provides a novel magnetic control capsule endoscope with a double-needle biopsy function, which comprises a shell, a support base fixed on the outer side wall of the shell and a switching mechanism arranged on the inner side wall of the shell, the switching mechanism comprises a support rod, a first detection needle and a second detection needle, three springs are fixedly connected to the inner side wall of the supporting base, small magnets are fixedly connected to the outer side walls of two of the springs, and one of the springs is fixedly connected to the center of the supporting base; the operation and control are simple and convenient, the hands of doctors are greatly liberated, and the doctors can concentrate on the diagnosis link. The biggest highlight is that only the static magnetic field is needed for control, the operation is simple, and the static magnetic field has no magnetic radiation and is safe and harmless to a human body. Through accurate control of an external magnetic field, a doctor can easily control the capsule endoscope to move, and flexible switching of the two needles is realized, so that the controllability of a detection process is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of capsule endoscopes, in particular to a novel magnetically controlled capsule endoscope with a double-needle biopsy function. Background Art

[0002] Capsule endoscopy, also known as capsule endoscopy, is an endoscope made in the shape of a capsule. It is a miniature camera wrapped in a medical capsule and used to photograph the internal conditions of the human gastrointestinal tract. The patient swallows this smart capsule orally, and it moves in the gastrointestinal tract with the help of the peristalsis of the digestive tract. At the same time, it uses the high-definition camera at the front end to capture images in real time and transmit these images wirelessly to the data recorder carried by the patient. Doctors can diagnose gastrointestinal diseases of patients by analyzing these images.

[0003] When using a capsule endoscope, for example, a capsule endoscope with magnetic control and double-needle biopsy functions, with announcement number CN219516195U, achieves stable and accurate biopsy operation through a uniquely designed transmission mechanism and biopsy needle. This endoscope combines magnetic control technology and double-needle biopsy function to improve diagnostic accuracy and medical efficiency.

[0004] Although the biopsy capsule endoscope can realize double-needle biopsy, it can only realize two tissue samplings of the same lesion and cannot realize the anchoring function.

[0005] Existing wireless biopsy capsules, such as the CT-2000, feature a rotating tissue-cutting razor attached to a torsion spring and constrained by a paraffin block. When the paraffin block is heated and melted, the razor is released, thereby collecting a tissue sample. Although this module enables capsule endoscopes to obtain tissue samples in the small intestine, additional space is required to house the control electronics and power supply.

[0006] Another method is to remotely load, store and release mechanical energy by changing the surrounding magnetic field. This device uses the new concept of magnetic torque spring to drive the blade to rotate by controlling the external magnetic field to obtain tissue. This device does not require batteries and control electronics, allowing extreme miniaturization, but it may cause tissue tearing and can only obtain surface tissue, which limits the detection of subcutaneous lesions.

[0007] There is also a technology that features a fine needle fixed to an internal permanent magnet, and the capsule can autonomously position and apply the required force by applying an external magnetic field and a gradient magnetic field to the magnet inside the capsule. This fine needle biopsy uses a hypodermic needle to capture tissue into the needle hole for cytological examination. However, the peristalsis of the esophagus and stomach may cause pressure on one side of the robot, causing the capsule to accidentally extend the needle and collect tissue at a location where a biopsy is not required, and the detection accuracy of the collected tissue is reduced due to limited space and mixing of tissues.

[0008] At the same time, the current biopsy capsule cannot be anchored, the accuracy of biopsy is not high, and although double-needle biopsy can be achieved, the two biopsies cannot be performed independently.

[0009] To this end, those skilled in the art have proposed a new type of magnetically controlled capsule endoscope with a double-needle biopsy function to solve the problems raised by the background technology. Utility Model Content

[0010] In order to solve the above technical problems, the utility model provides a new magnetically controlled capsule endoscope with a double-needle biopsy function to solve the problem that the biopsy capsule endoscope in the prior art can realize double-needle biopsy, but it can only perform two tissue samplings on the same lesion, which limits its flexibility in different positions or multiple samplings.

[0011] A novel magnetically controlled capsule endoscope with a double-needle biopsy function comprises a shell, an outer side wall of which is fixed with a supporting base;

[0012] A switching mechanism is arranged on the inner side wall of the shell.

[0013] Preferably, the switching mechanism includes a support rod, a detection needle 1 and a detection needle 2, and the inner wall of the support base is fixedly connected with three springs, and the outer walls of two of the springs are fixedly connected with small magnets, one of the springs is fixedly connected to the center position of the support base, and the end away from the support base is fixedly connected to the support rod, and the other two springs are fixedly connected with detection needle 1 and detection needle 2 at the ends away from the support base, and the two small magnets are also fixedly connected with detection needle 2 and detection needle 1, respectively, and detection needle 2 and detection needle 1 are slidably connected to the inner wall of the support base.

[0014] Preferably, the end of the support rod away from the support base is fixedly connected to a push rod, a sleeve is installed on the outer wall of the push rod, a middle magnet is installed on the inner wall of the shell, a pressure rod is installed on the end of the push rod away from the support rod, the end of the pressure rod away from the push rod is fixedly connected to the top magnet, and the top magnet is installed on the inner wall of the shell.

[0015] Preferably, the top magnet is circularly mounted on the inner wall of the shell, and the middle magnet is semi-annularly sleeved on the outer wall of the sleeve.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The operation is simple and convenient, which greatly frees the hands of doctors and allows them to focus more on the diagnosis. Its biggest highlight is that it only needs to be controlled by a static magnetic field. It is not only simple to operate, but also has no magnetic radiation and is safe and harmless to the human body. Through the precise control of the external magnetic field, doctors can easily control the movement of the capsule endoscope and realize the flexible switching of the double needles, thereby ensuring the controllability of the detection process. In addition, doctors can also accurately navigate the capsule endoscope to a specific intestinal area as needed for non-invasive sample collection.

[0018] 2. In the field of clinical pathological diagnosis, the double-needle biopsy technology has demonstrated its unique advantages. The unique double-needle design of this product allows two samples to be collected simultaneously in a single operation, which not only improves the efficiency and safety of biopsy, but also ensures the quantity and quality of sample collection, thereby significantly improving the accuracy and reliability of diagnosis. With the precise guidance of the external magnetic field, the capsule endoscope can reach the lesion directly. Through the clever exchange and repeated sampling of the double needles, efficient and accurate double biopsy is achieved, providing strong support for clinical diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0020] Figure 2 For this utility model Figure 1 Schematic diagram of the cross-sectional structure in;

[0021] Figure 3 For this utility model Figure 2 Schematic diagram of the rear view structure in FIG.

[0022] Figure 4 For this utility model Figure 1 Schematic diagram of the cross-sectional structure of the middle push rod and the pressure rod.

[0023] In the figure: 1. outer shell; 11. support base; 2. support rod; 21. detection needle 1; 22. detection needle 2; 23. small magnet; 24. push rod; 25. pressure rod; 26. sleeve; 27. middle magnet; 28. top magnet. DETAILED DESCRIPTION

[0024] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0025] As attached Figure 1 To Attachment Figure 4 As shown:

[0026] Embodiment 1: The utility model provides a novel magnetically controlled capsule endoscope with a double-needle biopsy function, comprising a housing 1, an outer wall of the housing 1 being fixed with a support base 11;

[0027] A switching mechanism, the switching mechanism includes a support rod 2, a detection needle 1 21, and a detection needle 2 22. The inner wall of the support base 11 is fixedly connected with three springs, and the outer walls of two of the springs are fixedly connected with small magnets 23. One of the springs is fixedly connected to the center position of the support base 11, and the end away from the support base 11 is fixedly connected to the support rod 2. The ends of the other two springs away from the support base 11 are respectively fixedly connected with detection needle 1 21 and detection needle 2 22. The two small magnets 23 are also fixedly connected with detection needle 2 22 and detection needle 1 21 respectively. The detection needle 2 22 and detection needle 1 21 are slidably connected to the inner wall of the support base 11.

[0028] Specifically, by setting the detection needle 2 22 and the detection needle 1 21, two samplings can be performed to complete rapid sampling.

[0029] The end of the support rod 2 away from the support base 11 is fixedly connected to a push rod 24, the outer wall of the push rod 24 is installed with a sleeve 26, the inner wall of the shell 1 is installed with a middle magnet 27, the end of the push rod 24 away from the support rod 2 is installed with a pressure rod 25, the end of the pressure rod 25 away from the push rod 24 is fixedly connected to a top magnet 28, the top magnet 28 is installed on the inner wall of the shell 1, the top magnet 28 is circularly installed on the inner wall of the shell 1, and the middle magnet 27 is semi-annularly sleeved on the outer wall of the sleeve 26.

[0030] Specifically, by disposing the middle magnet 27 , the second detection needle 22 and the first detection needle 21 can be controlled.

[0031] As can be seen from the above, the external magnetic field drives the top magnet 28 to move downward, which can make the top rod 24 rotate and drive the support rod 2 to rotate at the same time, so as to realize the detection needle 1 21 and the detection needle 2 22 switching to the position of the biopsy needle. Among them, one end of the support rod 2 is fixed on the top rod 24, and the other end passes through the hole on the support base 11. When the top rod 24 is pressed down, the inclined surface structure of the top rod 24 can be stuck in the incomplete guide groove of the sleeve 26, and the support rod 2 can be extended to achieve anchoring. The internal magnets can be used as driving magnets to control magnets, and the capsule movement is controlled by the external static magnetic field. After reaching the lesion position, the external gradient magnetic field can drive the middle magnet 27 to move downward, drive the detection needle 1 21 and the detection needle 2 22 to extend, and realize sampling. The sampling of the first lesion tissue is completed. When there is no external magnetic field drive, the middle magnet 27 and the iron ring are adsorbed together under the action of magnetic force. When the external magnetic field is driven, the middle magnet 27 and the iron ring will be separated. Under the control of the magnetic field gradient, the internal middle magnet 27 and the top magnet 28 are controlled by the magnetic force of the external magnet. By precisely controlling the distance of the external magnet from the capsule, the outer shell can align itself with the desired target, control the middle magnet 27 to move downward, drive the needle to extend, achieve sampling, and complete the collection of the first lesion tissue. Control the top magnet 28 to retract the anchor. Then the external magnet drives the outer shell to move, the needle retracts from the tissue into the hole, reaches the second lesion, and the anchor extends to complete the biopsy of the second lesion.

[0032] The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0033] In the description of the present utility model, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. The meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments or examples and the features of the different embodiments or examples described in this specification without contradiction.

[0037] In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A novel magnetically controlled capsule endoscope with double-needle biopsy function, characterized in that: It comprises a housing (1), wherein a support base (11) is fixed to the outer side wall of the housing (1); A switching mechanism is arranged on the inner side wall of the housing (1).

2. A novel magnetically controlled capsule endoscope with double-needle biopsy function as claimed in claim 1, characterized in that: The switching mechanism comprises a support rod (2), a detection needle 1 (21), and a detection needle 2 (22); three springs are fixedly connected to the inner side wall of the support base (11), and small magnets (23) are fixedly connected to the outer side walls of two of the springs; one of the springs is fixedly connected to the center of the support base (11), and the end away from the support base (11) is fixedly connected to the support rod (2); the ends of the other two springs away from the support base (11) are respectively fixedly connected to the detection needle 1 (21) and the detection needle 2 (22); the two small magnets (23) are also fixedly connected to the detection needle 2 (22) and the detection needle 1 (21), respectively; the detection needle 2 (22) and the detection needle 1 (21) are slidably connected to the inner side wall of the support base (11).

3. A novel magnetically controlled capsule endoscope with double-needle biopsy function as claimed in claim 2, characterized in that: The end of the support rod (2) away from the support base (11) is fixedly connected to a push rod (24), the outer wall of the push rod (24) is installed with a sleeve (26), the inner wall of the shell (1) is installed with a middle magnet (27), the end of the push rod (24) away from the support rod (2) is installed with a pressure rod (25), the end of the pressure rod (25) away from the push rod (24) is fixedly connected to a top magnet (28), the top magnet (28) is installed on the inner wall of the shell (1), the inner side of the shell (1) is fixedly connected to an iron ring, and the outer wall of the sleeve (26) is fixedly connected to the iron ring.

4. A novel magnetically controlled capsule endoscope with double-needle biopsy function as claimed in claim 3, characterized in that: The top magnet (28) is circularly mounted on the inner wall of the housing (1), and the middle magnet (27) is semi-annularly sleeved on the outer wall of the sleeve (26).

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