Multifunctional foreign body capturing device and method of operating the same

Abstract

The present disclosure provides a multifunctional foreign body capturing device and its operating method. The foreign body capturing device comprises: a capturing assembly, which is arranged at the distal end of the capturing device and consists of a claw-shaped structure of capturing arms, a barb structure is arranged at the same position of the distal end of each capturing arm, the barb structure is configured such that the barb tip faces the axis of the capturing assembly, the barb structure is arranged in a root connected with the capturing arm and an outward convex structure curved from the distal end to the proximal end; a folding assembly arranged in a sleeve structure, the folding assembly gradually extrudes the capturing arms from the proximal end through the inner wall so that the capturing assembly gradually folds into the folding assembly; a conveying assembly arranged at the distal end connected with the capturing assembly and the folding assembly and at the proximal end connected with an operating assembly for operating the capturing assembly and the folding assembly. Some embodiments of the present disclosure aim to realize more friendly intervention operation and higher fault tolerance rate of foreign body capturing operation by arranging the capturing assembly with a special structure.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of medical devices, in particular to a multifunctional foreign body capturing device and an operating method thereof. BACKGROUND

[0002] Heart valve disease is a common heart disease, among which valve damage caused by rheumatic fever is the most common. There are four valves in the human body, which are called mitral valve, tricuspid valve, aortic valve and pulmonary valve. Heart valve disease refers to the valve of the mitral valve, tricuspid valve, aortic valve and pulmonary valve due to rheumatic fever, mucinous degeneration, degenerative changes, congenital malformation, ischemic necrosis, infection or trauma, etc. The disease affects the normal flow of blood flow, thereby causing abnormal heart function, and ultimately leading to heart failure of single valve or multiple valve disease.

[0003] At present, the commonly used treatment scheme for mitral valve disease is transcatheter mitral valve edge-to-edge repair surgery. The surgery is currently being carried out all over the world, and the patient base is huge, and the product promotion speed is fast. Correspondingly, there are more and more related interventional products; the current treatment scheme for tricuspid valve disease is also mainly transcatheter tricuspid valve edge-to-edge repair surgery and transcatheter tricuspid valve annuloplasty; according to the operation principle, it can be divided into edge-to-edge clipper and annuloplasty clipper.

[0004] However, in the existing products, different types of design, huge number of patients, and great possibility of adverse events occurring during the operation, such as SLDA (Single Leaflet Device Attachment) often occurs during TEER surgery, which is the most common structural device failure after TEER, and is more common in complex lesions. Adverse events occurring during the operation need to be immediately removed and implanted with other operations, and the current relatively traditional method is still surgical thoracotomy removal, which is still a major trauma to patients.

[0005] Therefore, the prior art still needs to be improved and improved.

[0006] It should be noted that the above introduction to the technical background is only to facilitate the clear and complete description of the technical scheme of the present application, and to facilitate the understanding of those skilled in the art. The above technical scheme cannot be considered as known to those skilled in the art merely because it is described in the background section of the present application. SUMMARY

[0007] To solve at least one of the above problems, and one or more of other potential problems, the present disclosure proposes a multifunctional foreign body capturing device and its operating method, which is used for treating or providing a minimally invasive interventional / implantable surgery (such as a mitral valve, a tricuspid valve clipper, a filter, etc.) and remedial measures after improper operation, poor treatment effect or accidents during the operation of the operator. The device can capture the implant for removal operation through intervention.

[0008] In a first aspect of the present disclosure, a multifunctional foreign body capturing device is provided, which includes: a grabbing assembly arranged at the distal end of the capturing device and comprising a claw-shaped structure of three or more capturing arms, each capturing arm having a barb structure arranged at the same position of the distal end of the capturing arm, the barb structure being configured such that the barb tip faces the axis of the grabbing assembly, the barb structure being arranged such that the root is connected to the capturing arm and the distal end is curved outward; a folding assembly arranged in a sleeve structure and capable of being displaced relative to the grabbing assembly, when the folding assembly moves from the proximal end to the distal end, the folding assembly gradually folds the grabbing assembly into the folding assembly by extruding the capturing arms from the proximal end through the inner wall; and a delivery assembly arranged at the distal end of the grabbing assembly and the folding assembly and at the proximal end of the operation assembly for operating the grabbing assembly and the folding assembly.

[0009] Further, in some embodiments, the grabbing assembly is arranged to be composed of a memory metal, and the claw-shaped structure composed of the capturing arms is arranged to gradually open from the proximal end to the distal end of the capturing arms when the claw-shaped structure is not folded.

[0010] Further, in some embodiments, the grabbing assembly is arranged to be composed of a claw base and the capturing arms directly extending from the claw base from the proximal end to the distal end.

[0011] Further, in some embodiments, the capturing arm is arranged to include: a curved segment connected to the distal end of the claw base; and an extension segment connected to the distal end of the curved segment.

[0012] Further, in some embodiments, a barb window is arranged near the distal end of the capturing arm, the barb window penetrating the inner and outer surfaces of the capturing arm, the root of the barb structure extending from the side wall of the distal end of the barb window, and the barb structure facing the axis of the grabbing assembly.

[0013] Further, in some embodiments, when the grabbing assembly is folded or unfolded, a plurality of barb tips are on the same circular face, and the axis of the grabbing assembly is arranged to pass through the center of the circular face perpendicularly.

[0014] Further, in some embodiments, the claw base of the above-mentioned grasping assembly is configured as a tubular structure, and the tubular structure of the claw base can be sleeved on the inner tube assembly, and the inner tube assembly is provided with a release member and a noose cutting member.

[0015] In a second aspect of the present disclosure, a method for operating the foreign object capturing device as described above is also provided, and the operating method comprises the following steps: by operating the foreign object capturing device, the distal end of the grasping assembly retracted in the retracting assembly is brought close to the target clamp; by operating the foreign object capturing device, the retracting assembly is moved from the distal end to the proximal end, so that the capturing arms of the retracted grasping assembly are gradually opened; by operating the foreign object capturing device, the proximal end of the retracting assembly with the opened capturing arms is brought close to the target part of the target clamp, and by operating the foreign object capturing device, the retracting assembly is moved from the proximal end to the distal end, so that the capturing arms of the grasping assembly with the opened capturing arms are gradually retracted.

[0016] Further, in some embodiments, the operating method further comprises: after determining that the distal end inner surface of the capturing arms of the retracting assembly is in contact with the target part of the target clamp, by operating the foreign object capturing device, the capturing arms of the retracting assembly are further retracted and the barb structure is embedded into the target part of the target clamp, and at the same time, by operating the foreign object capturing device, the grasping assembly as a whole is moved towards the proximal end to make the barb tip further embedded into the target part of the target clamp.

[0017] Further, in some embodiments, the operating method comprises: determining that the distal end inner surface of the capturing arms of the retracting assembly is in contact with the base of the shaped ring clamp; the above-mentioned operating method further comprises: by operating the foreign object capturing device, the capturing arms of the retracting assembly are further retracted and the barb structure is embedded into the gap facing the distal end surface of the base of the shaped ring clamp, and at the same time, by operating the foreign object capturing device, the grasping assembly as a whole is moved towards the proximal end to make the barb tip further embedded into the gap facing the distal end surface of the base of the shaped ring clamp and make the central axis of the grasping assembly coincide with the central axis of the base of the shaped ring clamp.

[0018] Further, in some embodiments, the operating method comprises: determining that the distal end inner surface of the capturing arms of the retracting assembly is in contact with the clamping arm of the everted ring clamp; the above-mentioned operating method further comprises: by operating the foreign object capturing device, the capturing arms of the retracting assembly are further retracted and the barb structure is embedded into the gap on the outer surface of the clamping arm of the everted ring clamp, and at the same time, by operating the foreign object capturing device, the grasping assembly as a whole is moved towards the proximal end to make the barb tip further embedded into the gap on the outer surface of the clamping arm of the everted ring clamp.

[0019] The present disclosure has at least the following beneficial effects compared with the prior art:

[0020] In some embodiments, by setting the grasping assembly at the distal end of the capturing device, it forms a claw structure to more easily capture the target object; further, the same position of the distal end of each capturing arm is provided with a barb structure, the barb structure is configured to have the barb tip facing the axis of the grasping assembly, and the barb structure is provided with a outward protruding structure curved from the distal end to the proximal end of the barb structure, so that the capturing device can more easily (with higher fault tolerance) accurately position and capture the target object, and then more conveniently perform the release operation of the release member or the cutting and separating operation of the ring cutter. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and other features, advantages, and objects of the various embodiments of the present disclosure will become more apparent by reference to the following detailed description taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 A schematic view showing a valve clamp in a corresponding position of a heart is shown;

[0023] Figure 2 A schematic view showing another valve clamp in a corresponding position of a heart is shown;

[0024] Figure 3 A schematic view showing yet another valve clamp in a corresponding position of a heart is shown;

[0025] Figure 4 A schematic view showing a multifunctional foreign object capturing device according to an embodiment of the present disclosure is shown;

[0026] Figure 5 A schematic view showing the grasping assembly when opened according to an embodiment of the present disclosure is shown;

[0027] Figure 6 A schematic view showing the grasping assembly when closed according to an embodiment of the present disclosure is shown;

[0028] Figure 7 A schematic view showing one angle of the grasping assembly according to an embodiment of the present disclosure is shown;

[0029] Figure 8 A schematic view showing another angle of the grasping assembly according to an embodiment of the present disclosure is shown;

[0030] Figure 9 A schematic view showing yet another angle of the grasping assembly according to an embodiment of the present disclosure is shown;

[0031] Figure 10 A schematic view showing still another angle of the grasping assembly according to an embodiment of the present disclosure is shown

[0032] Figure 11A schematic view of a proximal shaping loop clamp according to embodiments of the present disclosure is shown;

[0033] Figure 12 A schematic view of a de-shaping loop clamp according to embodiments of the present disclosure is shown;

[0034] Figure 13 A method of operating a foreign object capture device according to embodiments of the present disclosure is shown;

[0035] Figure 14 A schematic view of a proximal rim-to-rim clamp according to embodiments of the present disclosure is shown;

[0036] Figure 15 A schematic view of a snare cutter cut according to embodiments of the present disclosure is shown;

[0037] Figure 16 A method of operating a foreign object capture device according to embodiments of the present disclosure is shown; and

[0038] In the various drawings, like or corresponding elements are denoted by like or corresponding reference numerals. DETAILED DESCRIPTION

[0039] Embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While several embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art. It should be understood that the drawings and embodiments are only for illustrative purposes and are not intended to limit the scope of the present disclosure.

[0040] In the description of embodiments of the present disclosure, the term "including" and its derivatives, are intended to be open-ended terms that specifically mean "including, but not limited to." The term "based on" is intended to be further open-ended, such that "based on" includes based on directly on, based on indirectly on, based on derivatives of, and based on one or more or both of directly and indirectly on. The term "one embodiment" or "an embodiment" are intended to be open-ended terms that specifically mean "at least one embodiment." The term "first," "second," and the like, are intended to be generic terms that can be used to distinguish between different objects. Other generic terms can also be used, such as "a," "an," and "the," which are intended to be generic terms that can be used to distinguish between different objects. Other explicit and implicit definitions can also be included below.

[0041] The terminology used in this application, and by the inventors herein, is intended to be interpreted in only a descriptive sense and not as a limiting term. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "and / or," as used herein, refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0042] It should be understood that, although the terms first, second, third, etc. can be used herein to describe various information, the information should not be limited to these terms. These terms are only used to differentiate one piece of information from another. For example, a first information could be termed a second information without departing from the scope of the present application, similarly, a second information could be termed a first information. Depending on the context, the word "if' as used herein can be interpreted to mean "when" or "upon" or "in response to the determining."

[0043] Further, it should be noted that, in the description of the embodiments of the present application, unless specifically defined otherwise, "in vivo" means in the tissue organs of a patient, and "in vitro" means outside the tissue organs of a patient. Meanwhile, in the embodiments of the present application, "distal" means the direction away from the physician, and "proximal" means the direction close to the physician. It should also be understood that, in the present disclosure, "outward" in the "outwardly convex structure" means the direction away from the central axis of the grasping assembly, and the corresponding "inward" means the direction towards the central axis of the grasping assembly.

[0044] Generally, in some query technical solutions, a recyclable valve clipper and a valve clipper recycling system are proposed, and particularly, the valve clipper (edge-to-edge clipper) mentioned in the patent requires the existence of characteristics (hooks, barbs, rings, blind holes, through holes, magnetic parts, threaded parts, etc. connection features) of the clipper itself, however, more clippers in the design (for example, shaped ring clippers, etc.), for the protection and treatment of the patient's heart, the product features will be as smooth as possible, avoiding the existence of special features; The product is covered with a high-molecular film to speed up the process of endothelialization of the heart and reduce the possibility of damage to the heart itself; and the connection features need to control the delivery system to achieve precise alignment operation, which is difficult to control in the intervention approach, and it is more difficult to achieve precise alignment. It should be understood that the valve clipper (which can generally be classified as A61F) and the valve clipper recycling system (which can generally be classified as A61B) are usually two independent devices, in which the valve clipper can be implanted as a prosthesis into the human body, and the independent valve clipper recycling system is a device for removing foreign matter from the human body (similar to surgical forceps, surgical forceps, etc.). It should also be noted that not all devices related to valve clippers (such as valve clipper recycling systems) can be simply classified as valve clippers; it is like a dental forceps (recovery device) that does not necessarily belong to the category of dentures; the recovery device for removing the engine from the car does not necessarily belong to the category of the engine; unless the dental forceps (recovery device) is a special component of the dental prosthesis, and such a recovery device is a special component of the engine. Of course, both the valve clipper (which can generally be classified as A61F) and the valve clipper recycling system (which can generally be classified as A61B) belong to the "biomedical engineering industry" in the strategic emerging industry.

[0045] In addition, in other application scenarios, for atrial septal defect (a kind of congenital heart disease), the atrial septal defect is an abnormal opening in the septum between the two atria of the heart, and the blood flow in the atrium is turbulent, which can cause the heart to bear more or cause other symptoms. When the anatomical structure allows, a atrial septal occluder is usually implanted to fill the defect, close the abnormal blood flow channel in the heart, prevent blood from flowing from the left atrium to the right atrium (ASD) or prevent thrombus and other substances in the venous system from entering the arterial system through the patent foramen ovale (PFO-related stroke / embolism), thereby reducing the burden on the heart. It is currently a commonly used minimally invasive treatment, however, due to product instrument reasons, operator operation reasons, etc. can cause poor treatment effect or poor position, instrument failure, etc. When an adverse event occurs, only surgical thoracotomy can be used to remove it, which causes great trauma to the patient.

[0046] In addition, in some other application scenarios, the filter (usually refers to inferior vena cava filter) is mainly used to prevent the inferior deep vein thrombosis from entering the pulmonary artery with blood flow to cause fatal pulmonary embolism (PE), and to provide a physical barrier for high-risk patients in the case of ineffective anticoagulation, to intercept large blood clots from the lower limbs / pelvic cavity, and to prevent fatal pulmonary embolism. The filter can be divided into a recoverable filter and a permanent filter, which needs to be taken out at a certain time range after implantation, and in addition, improper implantation of the filter or special circumstances, which cannot / take out, will also cause great harm to the patient, and surgical intervention is needed.

[0047] It should be understood that the implantation failure caused by the instrument and the operator, and the implantation that needs to be taken out are all described as foreign bodies in various embodiments of the present disclosure. In particular, the multifunctional foreign body catching device in each embodiment herein is a device for taking out foreign bodies from the human body, which is relatively general (adapted to at least Figures 1-3 the implantation device taken out), and can at least solve the problems such as Figures 1-3 the failure of the clip applier or the corresponding prosthesis (wrong implantation or other problems), and as a general-purpose special taking-out device, it can take out the failed clip applier and other devices with problems (the failed prosthesis can be considered as an improper foreign body left in the human body).

[0048] In order to solve at least one of the above problems, and one or more of other potential problems, the example embodiments of the present disclosure propose a multifunctional foreign body catching device and its corresponding operation method. The following is described in detail in combination with the drawings.

[0049] Figure 1 、 2 , 3 shows a schematic diagram of the valve clip applier in the corresponding position of the heart. For the need of taking out the clip applier in Figures 1 to 3 , the present disclosure proposes a multifunctional foreign body catching device, which can take out the corresponding clip applier through interventional surgery.

[0050] Figure 4A schematic diagram of a multifunctional foreign body capturing device according to an embodiment of the present disclosure is shown. In this example embodiment, the multifunctional foreign body capturing device 100 comprises: a grasping assembly 10 arranged at the distal end of the capturing device 100; a retracting assembly 20 arranged in a sleeve structure for gradually retracting the grasping assembly 10 into the retracting assembly 20; a conveying assembly 30 having a distal end connected to the grasping assembly 10 and the retracting assembly 20 and a proximal end connected to an operating assembly 40 for operating the grasping assembly 10 and the retracting assembly 20. It should also be understood that in this diagrammatic embodiment, the specific operating assembly 40 is also shown to comprise: a venting valve 41, a bending knob 42, a telescoping knob 43, a push-pull knob 44; and further comprises a Y valve 51, a lockable hemostatic valve 52.

[0051] It should be understood that the grasping assembly 10 is a key component of the capturing device 100, which is further described below.

[0052] Figure 5 A schematic diagram of the grasping assembly when opened according to an embodiment of the present disclosure is shown. In this example embodiment, the grasping assembly 10 is arranged at the distal end of the capturing device 100 and comprises a claw-shaped structure composed of three or more (preferably 6 in the diagram) grasping arms 11, each of which has a barb structure 15 arranged at the same position at the distal end of the grasping arm 11, the barb structure 15 is configured to have a barb tip pointing towards the central axis of the grasping assembly 10, the barb structure 15 is arranged to have a root connected to the grasping arm 15 and a curved outward protruding structure from the distal end to the proximal end (i.e. the bending direction is towards the direction away from the central axis of the grasping assembly 10). It should also be understood that the so-called central axis of the grasping assembly 10 refers to the fact that the retracting assembly 20 and the conveying assembly 30 are both tubular structures (or cylindrical structures from the outside), accordingly, the central axis (similar to the central axis of a cylinder) can be an imaginary straight line passing through the center of the bottom circular face.

[0053] Figure 6 A schematic diagram of the grasping assembly when retracted according to an embodiment of the present disclosure is shown. In this example embodiment, the grasping assembly 10 is retracted into the retracting assembly 20. It should be understood that the retracting assembly 20 is arranged in a sleeve structure, the retracting assembly 20 can be displaced relative to the grasping assembly 10, when the retracting assembly 20 is moved from the proximal end to the distal end (from right to left in the diagram), the grasping assembly 10 can be gradually retracted into the retracting assembly 20.

[0054] Figure 7A perspective view of a snare assembly according to an embodiment of the present disclosure is shown. In this example embodiment, the snare assembly 10 is configured to include a snare base 12 and a snare arm 11 extending directly from the snare base 12 from a proximal end to a distal end. Further, in some embodiments, the snare arm 11 is configured to include a curved section 11-2 connected to a distal end of the snare base 12, and an extension section 11-1 connected to a distal end of the curved section 11-2. Further, in some embodiments, a barb window 16 is configured to be formed through an inner and outer surface of the snare arm 11 near a distal end of the snare arm 11, and a root of a barb structure 15 extends from a side wall of the distal end of the barb window 16 and the barb structure 15 is directed toward a central axis of the snare assembly 10.

[0055] Figure 8 A perspective view of another angle of a snare assembly according to an embodiment of the present disclosure is shown. In this example embodiment, the snare assembly 10 can be naturally contracted or expanded (when not performing a snaring operation or when being pushed or stretched by an external force), and a plurality of barb tips are on a same circular plane, as shown, and a central axis of the snare assembly 10 is configured to pass through a center of the circular plane, which is perpendicular to a paper surface in Figure 9 Figure 9 In addition, Figure 10 A perspective view of another angle of a snare assembly according to an embodiment of the present disclosure is shown, which is a perspective view of the snare assembly 10.

[0056] Further, in some embodiments, the snare assembly 10 is configured to be made of a memory metal (for example, made of a nickel-titanium alloy with super-elasticity, which retains the characteristics of elastic deformation after heat setting), and when the snare arm 11 is not contracted, the snare arm 11 is configured to be gradually expanded from a proximal end to a distal end.

[0057] It should also be understood that in some embodiments, the snare device 100 can be matched with some operational accessories (for example, a release member, a loop cutter), and the operational accessories can be sent to a target position through a lumen of the snare device 100 to assist in a snaring operation, and the target objects that can be snared include not only a clip but also a plug and a filter.

[0058] Further, the operation method of the snare device in some specific application scenarios is introduced.

[0059] For the application scenario of the shaped loop clip in Figure 1 , the following operation method can be used.

[0060] ​In some embodiments, a method of operating a foreign object capture device is presented, the method 1000 comprising the following steps: step 1100, by operating the foreign object capture device 100 such that the distal end of the capture assembly, which is retracted within the retraction assembly, approaches a target clamp, i.e. as Figure 11The shown forming ring clamp 110; step 1200, by operating the above-mentioned foreign body capture device 100, the above-mentioned folding assembly is moved from the distal end to the proximal end, so that the capture arm of the folded capture assembly gradually opens; step 1300, by operating the above-mentioned foreign body capture device 100, the proximal end of the folding assembly with the open capture arm is close to the base part of the forming ring clamp 110, and by operating the above-mentioned foreign body capture device 100, the above-mentioned folding assembly is moved from the proximal end to the distal end, so that the capture arm of the capture assembly with the open capture arm gradually folds; step 1400, determine that the distal end inner surface of the capture arm of the above-mentioned folding assembly is in contact with the distal end of the base of the forming ring clamp 110; step 1500, by operating the above-mentioned foreign body capture device 100, the capture arm of the above-mentioned folding assembly is further folded and the barb structure is embedded in the gap facing the distal end face of the base of the forming ring clamp 110, and at the same time by operating the above-mentioned foreign body capture device 100, the whole capture assembly is moved to the proximal end (the technical effect is that the barb tip is further embedded in the gap facing the distal end face of the base of the forming ring clamp 110, and the central axis of the above-mentioned capture assembly coincides with the central axis of the above-mentioned forming ring clamp base). It should be understood that generally, it is easy to grasp the outer surface of the forming ring clamp 110 with the claw-shaped structure of the capture assembly of the foreign body capture device 100, but it is not easy to send the release member to the capture position through the inner tube and just release the forming ring clamp 110. The core difficulty is to "directly" the extended release member to the proximal end of the base of the forming ring clamp 110 (so-called direct, refers to: the central axis of the release member coincides with the central axis of the distal end face of the base of the captured forming ring clamp 110).It should be understood that fine-tuning the distal end of the foreign object grasping device 100 relative to the base of the forming ring clamp 110 using only ultrasonic-assisted methods is challenging. This operating method 1000, combined with the unique barbed structure of the foreign object grasping device 100, allows the grasping component to initially grip the forming ring clamp 110 (including its base portion) before the barbed structure penetrates the outer membrane of the forming ring clamp 110. At this point, the foreign object grasping device 100 may have a certain angle relative to the base of the forming ring clamp 110 (the central axis of the foreign object grasping device 100 and the forming ring clamp 110 are not coincident). Therefore, by operating the foreign object grasping device 100, the grasping component can achieve the desired gripping effect. As the entire assembly moves proximally (i.e., the gripping assembly of the pull-back foreign object grasping device 100), since some of the skewed barbs only initially pierce the outer membrane of the molded ring clamp 110 (especially in the gap at the distal end of its base), this pull-back foreign object grasping device 100 gripping assembly allows the barbs to move proximally along with the molded ring clamp 110. Some of the barbs closer to the distal end will first encounter the obstruction of the distal end face of the base of the molded ring clamp 110 and stop, until all remaining barbs are blocked by the distal end face of the base of the molded ring clamp 110, thereby aligning the central axis of the gripping assembly with the central axis of the base of the molded ring clamp 110. It should be further understood that it is precisely because of this... Figure 7 The barbed structure, particularly near the distal end of the gripping arm 11, has a barbed window 16 penetrating the inner and outer surfaces of the gripping arm. The root of the barbed structure 15 extends from the side wall of the distal end of the barbed window 16, and the barbed structure 15 faces the central axis of the gripping assembly 10. The barbed structure 15 is configured such that the barb tip 15-1 faces the central axis of the gripping assembly, so that the gripping assembly of the foreign object gripping device 100 is not intended to penetrate the base of the molded ring clamp 110 (damaging the end face of the base), but rather to engage the gripping assembly of the foreign object gripping device 100 by pulling it back. The barb structure 15, with its front end near the barb tip 15-1, acts as a surface slightly larger than the point (barb tip) to abut (remain stationary, rather than penetrating and moving proximally) against the base end face of the forming ring clamp 110. This allows sufficient time for the other gripping arms of the foreign object grasping device 100 to adjust their posture (move proximally). Ultimately, the barbs on all the gripping arms of the foreign object grasping device 100 remain on the base end face of the forming ring clamp 110, thus aligning the central axis of the gripping component with the central axis of the base of the forming ring clamp. Subsequently, the distal end face of the release component can be aligned with the proximal end face of the base of the forming ring clamp 110, allowing the release component to be inserted precisely into the forming ring clamp 110 for release operation. Figure 12 As shown. In Figure 12In the above, the upper diagram shows that the shaped loop clamp 110 is opened by the release member to release the clamped human tissue, while the lower diagram shows that the shaped loop clamp 110 is closed together and taken out of the human body by the foreign body catching device 100. In addition, Figure 13 A method of operating a foreign body catching device according to an embodiment of the present disclosure is shown.

[0061] For the application scenario of the edge-to-edge clamp in Figure 2 , the following operation method can be used.

[0062] In some embodiments, a method of operating a foreign body catching device is proposed, which comprises the following steps: step 2100, by operating the foreign body catching device 100, the distal end of the catching assembly retracted in the retraction assembly is close to the target clamp, i.e. the edge-to-edge clamp 120 as shown in Figure 14 ; step 2200, by operating the foreign body catching device 100, the retraction assembly is moved from the distal end to the proximal end, so that the catching arms of the retracted catching assembly are gradually opened; step 2300, by operating the foreign body catching device 100, the proximal end of the retraction assembly with the opened catching arms is close to the support arm part of the edge-to-edge clamp 120, and by operating the foreign body catching device 100, the retraction assembly is moved from the proximal end to the distal end, so that the catching arms of the catching assembly with the opened catching arms are gradually retracted; step 2400, it is determined that the inner surface of the distal end of the catching arm of the retraction assembly is in contact with the clamping arm of the edge-to-edge clamp 120; step 2500, by operating the foreign body catching device 100, the catching arms of the retraction assembly are further retracted and the barbs are embedded in the gap on the outer surface of the clamping arm of the edge-to-edge clamp 120, and at the same time, by operating the foreign body catching device 100, the whole catching assembly is moved towards the proximal end to make the barb tips further embedded in the gap on the outer surface of the clamping arm of the edge-to-edge clamp (the technical effect of this is that the catching arms that have embedded the barbs in the gap on the outer surface of the clamping arm of the edge-to-edge clamp 120 are stationary relative to the edge-to-edge clamp 120 when pulled back, while the catching arms that have failed to embed in the gap on the outer surface of the clamping arm of the edge-to-edge clamp 120 can be embedded in the gap on the outer surface of the clamping arm of the edge-to-edge clamp 120 after adjustment (after the pulling back operation), so that the foreign body catching device 100 holds the edge-to-edge clamp 120 tightly, and after that, a snare cutter (which can use an electric knife, which can be a radiofrequency electric knife, a high-frequency electric knife, etc.) is delivered from the inner tube, and the snare cutter cuts off the human tissue along the catching arms (the inner side of the catching arms) as shown in Figure 15 , so as to achieve the disengagement of the edge-to-edge clamp 120, and then the edge-to-edge clamp 120 can be further compressed and taken out together by adjusting the foreign body catching device 100. In addition, Figure 16Another method of operating a foreign object capture device according to embodiments of the present disclosure is shown.

[0063] In addition, for the application scenario of the edge-to-edge clamp in Figure 3 The method 2000 can also be used for the operation of the edge-to-edge clamp in

[0064] In addition, the present disclosure also provides a method of manufacturing the capture assembly of the foreign object capture device in the above embodiments. The process is to unfold a tubular structure of the claw base of the capture assembly, i.e., to cut the tubular structure from one side wall along the central axis of the claw base and lay it flat. Laser cutting is performed on the tubular structure, leaving the remaining material, in which the capture arm at the left end of the paper, the barb window at the distal end of the capture arm, and the barb structure (including the barb tip) can be cut out by laser cutting, in addition to the claw base portion at the right end of the paper. Further, the guide wire can be guided from the barb tip of the barb window from the outside of the capture assembly to the inside of the capture assembly. The inside refers to the side towards the central axis of the capture assembly, while the outside refers to the side away from the central axis of the capture assembly. After high-temperature solidification, the barb structure and the structure with the barb tip pointing towards the central axis of the capture assembly are formed. It should also be understood that, in addition to being a byproduct of manufacturing the barb structure, the barb window can also serve as a space to accommodate the bulging covering film when the barb pierces the covering film of the clamp, and the excess covering film or the extruded covering film can be extruded from the barb window to extend to the outer surface of the distal end of the capture arm of the capture assembly, thereby covering and protecting the outer surface of the distal end of the capture arm and facilitating the more friendly operation to the organ wall.

[0065] The above has described various embodiments of the present disclosure, and the above description is exemplary and is not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles, practical applications, or technical improvements in the art, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

[0066] The above is only an optional embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art can make various modifications and changes to the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. A multifunctional foreign object capture device, characterized in that, include: The grasping component is located at the distal end of the grasping device and is a claw-shaped structure consisting of three or more grasping arms. Each grasping arm has a barb structure at the same position at the distal end. The barb structure is configured such that the barb tip faces the central axis of the grasping component. The barb structure is configured such that the root is connected to the grasping arm and is an outwardly protruding structure that curves from the distal end to the proximal end. A barbed window is provided at the far end of the grasping arm, penetrating the inner and outer surfaces of the grasping arm. The root of the barbed structure extends from the side wall of the far end of the barbed window, and the barbed structure faces the central axis of the grasping assembly. The retracting component is configured as a sleeve structure and is displaceable relative to the grasping component. When the retracting component moves from the proximal end to the distal end, the retracting component squeezes the grasping arm from the proximal end through the inner wall, causing the grasping component to gradually retract into the retracting component. The conveying component is configured to be remotely connected to the gripping component and the retracting component, and proximally connected to an operating component for operating the gripping component and the retracting component.

2. The foreign object capture device according to claim 1, characterized in that, The gripping component is configured to be made of shape memory metal, and the claw-shaped structure composed of gripping arms is configured to gradually open from the proximal end to the distal end of the gripping arms when not retracted.

3. The foreign object capture device according to claim 2, characterized in that, The grasping assembly is configured to consist of a claw base and a grasping arm extending directly from the claw base from the proximal end to the distal end.

4. The foreign object capture device according to claim 3, characterized in that, The grasping arm is configured to include: a curved section connected to the distal end of the claw base; and an extension section connected to the distal end of the curved section.

5. The foreign object capture device according to claim 2, characterized in that, When the gripping component retracts or expands, multiple barbs are positioned on the same circular surface, and the central axis of the gripping component is set to pass perpendicularly through the center of the circular surface.

6. The foreign object capture device according to claim 1, characterized in that, The gripper base of the gripping assembly is constructed as a tubular structure, which can be fitted onto the inner tube assembly, which is configured to be equipped with a release element and a snare cutter.

7. The foreign object capture device according to claim 1, characterized in that, include: The foreign object capture device is configured to allow the distal end of the grasping component, which is gathered within the gathering component, to approach the target clamp by operating the operating component; and to allow the gathering component to move from the distal end to the proximal end so that the grasping arm of the gathered grasping component gradually opens. The proximal end of the retracting assembly that allows the grasping arm to open is brought close to the target part of the target clamp, and by operating the operating assembly, the retracting assembly can be moved from the proximal end to the distal end, causing the grasping arm of the grasping assembly that has opened to gradually retract.

8. The foreign object capture device according to claim 7, characterized in that, The foreign object capture device is also configured such that, after the distal inner surface of the capture arm of the retracting assembly contacts the target portion of the target clamp, the operation component can be used to further retract the capture arm of the retracting assembly and embed the barb structure into the target portion of the target clamp. At the same time, the operation component can be used to move the entire grasping assembly proximally so that the barb tip is further embedded into the target portion of the target clamp.

9. The foreign object capture device according to claim 7, characterized in that, The foreign object capture device is further configured such that, after the distal inner surface of the capture arm of the retracting assembly contacts the base of the forming ring clamp, by operating the operating component, the capture arm of the retracting assembly can be further retracted and the barbs can be embedded into the gap facing the distal end face of the base of the forming ring clamp. At the same time, by operating the operating component, the entire grasping assembly can be moved proximally so that the barb tips are further embedded into the gap facing the distal end face of the base of the forming ring clamp and the central axis of the grasping assembly coincides with the central axis of the base of the forming ring clamp.

10. The foreign object capture device according to claim 7, characterized in that, The foreign object capture device is further configured to, after the distal inner surface of the capture arm of the retracting assembly contacts the clamping arm of the edge-to-edge clamp, further retract the capture arm of the retracting assembly by operating the operating component and embed the barb structure into the gap on the outer surface of the clamping arm of the edge-to-edge clamp, and simultaneously move the entire grasping assembly proximally by operating the operating component so that the barb tip is further embedded into the gap on the outer surface of the clamping arm of the edge-to-edge clamp.

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