An in vivo dissection cutting system
By using the dissection and cutting device of the in vivo dissection and cutting system, the problems of large trauma, high cost and many complications in the surgery of narrowed or blocked blood vessels have been solved, and low-trauma and high-efficiency vascular lesion cleaning and stent removal have been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MAIDI ZHONGLIAN (TIANJIN) MEDICAL DEVICE CO LTD
- Filing Date
- 2025-05-20
- Publication Date
- 2026-06-23
AI Technical Summary
Existing technologies are problematic when dealing with narrowed or blocked blood vessels, especially in cases of extensive vascular lesions and long-term stent placement, as they involve significant surgical trauma, high costs, and numerous complications.
Design an in vivo dissection and cutting system, including a dissection device and a cutting device, which separates the dissection head from adjacent tissues, uses a cutting mechanism to cut the distal end of the target dissectible material, and uses a retrieval device to remove the target dissectible material. X-ray imaging or ultrasound-detectable materials are used to facilitate surgical visualization and precise operation.
It achieves low-invasive and efficient vascular lesion removal, reduces surgical costs, shortens the recovery period, and reduces postoperative complications. It is suitable for the removal of narrowed or blocked blood vessels and the removal of long-term placed stents.
Smart Images
Figure CN224387533U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of medical devices, and in particular to an in vivo peeling and cutting system. Background Technology
[0002] It is well known that blood vessels can narrow or become blocked, especially common among the elderly. The reasons include: 1. Chronic inflammation, metabolic disorders, blood vessel wall damage, genetic factors, and drug side effects causing calcification or hardening of blood vessels; 2. Blood clots or foreign body deposits due to poor dietary habits or lifestyle. Once narrowing or blockage occurs, blood circulation is impaired, blood supply is reduced, leading to tissue or organ necrosis in mild cases, and disability or death in severe cases, all of which have catastrophic consequences for human health. Timely intervention is necessary to re-establish effective blood circulation. Vascular interventional procedures, such as using balloon dilation catheters and vascular stents to dilate or support calcified or hardened narrowed blood vessels, are a common treatment method, but their effectiveness is limited, especially for patients with significant narrowing, making surgery a contraindication. Similarly, using thrombectomy stents or aspiration catheters to remove thrombi from thrombosed blood vessels is a better treatment for fresh thrombi, but less effective for old thrombi or large calcified deposits. For blood vessels that are significantly narrowed or even blocked, there is an urgent need for safe and effective treatment methods. Recently, emerging technologies such as mechanical rotational atherectomy and laser ablation have emerged in line with the trend of interventional vascular procedures without implantation, achieving certain clinical results in some patients. However, due to the huge individual differences among patients, such as the length of the vascular lesion, the degree of vascular tortuosity, the degree of blockage in the vascular lumen, the shape and course of the vascular lumen, and the size and changes of the vascular lumen diameter, the universality of these emerging technologies is difficult to guarantee.
[0003] Meanwhile, vascular stents implanted in blood vessels, especially peripheral vessels such as those in the intracranial and lower extremities, can experience significant foreign body reactions if left in place for an extended period due to the materials or structure. Since these vessels are typically small, the deposition of thrombi or foreign bodies within the stent can be exacerbated, necessitating stent removal. However, due to the endothelium, stent removal is difficult using minimally invasive methods. For example, in cases of lower extremity arterial occlusion after stent placement, current procedures involve incisions in the groin and knee, complete removal of the artery, and replacement with an artificial artery. This is particularly difficult and dangerous for elderly patients due to the prolonged and expensive procedure, requiring a lengthy hospital stay for recovery. Furthermore, there is a risk of rejection of the artificial blood vessel, potentially leading to further postoperative complications.
[0004] Therefore, designing an in vivo ablation and cutting system is essential. Utility Model Content
[0005] In view of the aforementioned problems with existing target stripping removal methods, an in vivo stripping and cutting system is intended to be provided.
[0006] The specific technical solution is as follows:
[0007] An in vivo ablation and cutting system, comprising:
[0008] A peeling device, the peeling device including a peeling head, at least a portion of which is arc-shaped and abuts against the outer side of an in vivo target to be peeled off, wherein by moving the peeling head, the outer side of the target to be peeled off is separated from adjacent tissue;
[0009] A cutting device is provided with a cutting mechanism, the distal end of which abuts against the boundary of the distal end of the target abscission material. By operating the cutting mechanism, the distal end of the target abscission material is separated from the adjacent tissue.
[0010] In the above-mentioned in vivo dissection and cutting system, the target dissected material includes one or more of blood vessels, vascular intima, thrombi in vascular cavities, or foreign bodies;
[0011] The peeling head is an arc-shaped peeling spoon or a first annular structure. The arc-shaped peeling spoon abuts against the outside of the target peeling material, and the first annular structure is sleeved on the outside of the target peeling material.
[0012] The peeling device further includes a peeling rod with an elastic modulus of not less than 2 GPa. The proximal end of the peeling head is fixed to the first end of the peeling rod, and the second end of the peeling rod has a hand-held portion.
[0013] In the aforementioned in vivo peeling and cutting system, the elastic modulus of the peeling rod is not less than 180 GPa, which allows the handheld part to transfer the force to the peeling head in a 1:1 ratio, resisting the bending deformation that occurs after the peeling rod and peeling head have entered the human body over a long distance, reducing mechanical loss, and at the same time facilitating precise control of the peeling distance to ensure the subsequent cutting effect.
[0014] In the above-mentioned in vivo peeling and cutting system, the first annular structure and the peeling rod form an angle α, where 90°≤α<180°;
[0015] The peeling rod has a hollow structure, which is laid along the axial direction of the peeling rod and runs through the entire peeling rod.
[0016] The projection of the first annular structure along its central axis is circular or elliptical.
[0017] In the aforementioned in vivo peeling and cutting system, the cutting mechanism includes a second ring structure and a third ring structure that are relatively movable. The second ring structure and the third ring structure are provided with a mechanical shearing structure. The second ring structure and the third ring structure are both sleeved on the outside of the target peeling material. The shearing structure cuts the distal end of the peeled target peeling material by moving at least one of the second ring structure and the third ring structure along the cutting direction.
[0018] The cutting device further includes a cutting drive component, which drives the second annular structure and / or the third annular structure to move along the cutting direction;
[0019] The cutting device further includes a first transmission rod and a second transmission rod. The first end of the first transmission rod is connected to a second annular structure, and the first end of the second transmission rod is connected to a third annular structure. The cutting drive unit drives the first transmission rod and / or the second transmission rod to cause at least one of the second annular structure and the third annular structure to cut the distal end of the peeled target material along the cutting direction.
[0020] In the aforementioned in vivo peeling and cutting system, the cutting mechanism includes a second annular structure and an active cutting application end A disposed on the second annular structure. The second annular structure is sleeved on the outside of the target peel and abuts against the distal end of the target peel. The second annular structure facilitates control of the direction and range of the active cutting application end A cutting the target peel, and applies energy to the active cutting application end.
[0021] In the aforementioned in vivo peeling and cutting system, the cutting mechanism includes a third annular structure and an active cutting application end B disposed on the third annular structure. When the third annular structure is embedded in the target peeling material, the active cutting application end A and the active cutting application end B form an annular energy field, which thermally cuts and separates the target peeling material within the annular energy field; the energy includes one or more of light, electricity, and radio frequency.
[0022] The aforementioned in vivo peeling and cutting system further includes: a retrieval member having a fourth annular structure, within which a retrieval structure is provided, the inner wall of the fourth annular structure being open and allowing the retrieval structure to extend out, the retrieval structure retrievaling the cut target material; or, the retrieval member having an arc-shaped peeling spoon and a retrieval rod fixedly connected to the proximal end of the peeling spoon, the retrieval rod having a retrieval structure provided within it, the side wall of the retrieval rod being open and allowing the retrieval structure to extend out, the retrieval structure retrievaling the cut target material.
[0023] In the above-mentioned in vivo peeling and cutting system, the sling structure is a sling wire or a sling mesh.
[0024] In the above-mentioned in vivo peeling and cutting system, the retrieval component further includes a retrieval drive component, which drives the retrieval structure to extend from the opening of the fourth annular structure or the retrieval rod until it is retrievaled to the outside of the cut target peel, and pulls out the retrievaled target peel.
[0025] In the aforementioned in vivo peeling and cutting system, when the retrieval component has the fourth annular structure, the retrieval component further includes a sleeve rod, which is a hollow structure with open ends. The fourth annular structure is fixed to the first end of the sleeve rod, and the first end of the sleeve rod communicates with the opening of the fourth annular structure. The retrieval driving member is located at the second end of the sleeve rod, and the retrieval driving member drives the retrieval structure to retrieve the target material.
[0026] The aforementioned in vivo ablation and cutting system, wherein the part that enters the human body and touches the target ablation material includes an ablation head, a first annular structure, a second annular structure, a third annular structure, a fourth annular structure, a retrieval wire, and a retrieval mesh, which are made of X-ray radiopaque material and / or ultrasonically detectable material.
[0027] In the aforementioned in vivo ablation and cutting system, the X-ray imaging material and / or ultrasonically detectable material is one or more of cobalt-chromium alloy, nickel-titanium alloy, stainless steel, titanium alloy, and tantalum alloy.
[0028] The aforementioned in vivo dissection and cutting system, wherein the parts that enter the human body and touch the target dissector include the dissection head, the first annular structure, the second annular structure, the third annular structure, the fourth annular structure, the retrieval wire, and the retrieval mesh, the surface roughness of which ranges from [R0.03, R50], making the surgical process of entering human tissue and separating the target dissector smooth, and facilitating timely detection and positioning using imaging equipment such as ultrasound during the operation.
[0029] The positive effects of the above technical solution compared with the existing technology are:
[0030] This invention separates the outer side of the target material from adjacent tissue using a dissection device and separates the distal end of the target material from adjacent tissue using a cutting device. Using the above system during surgery allows for visual dissection of the target material, ensuring thorough removal to guarantee surgical efficacy, reduce surgical trauma, lower surgical costs, and shorten the patient's hospitalization and recovery period. Furthermore, it eliminates the need for artificial blood vessels, reducing the probability of postoperative complications. It is suitable for clearing narrowed or blocked lumens, especially for removing old thrombi or large deposits in lumens, as well as foreign objects such as long-term placed stents in lumens. Attached Figure Description
[0031] Figure 1This is a schematic diagram of the structure of an arc-shaped peeling spoon in an in-body peeling and cutting system according to the present invention;
[0032] Figure 2 This is a front view of the structure of an arc-shaped peeling spoon in an in-body peeling and cutting system according to this utility model;
[0033] Figure 3 This is a side view of the structure of an arc-shaped peeling spoon in an in-body peeling and cutting system according to the present invention;
[0034] Figure 4 This is a schematic diagram of the first annular structure in an in vivo peeling and cutting system of this utility model;
[0035] Figure 5 This is a side view of the structure of the first annular structure in an in vivo peeling and cutting system of this utility model;
[0036] Figure 6 This is a schematic diagram of the hollow structure of the peeling rod in the in-body peeling and cutting system of this utility model;
[0037] Figure 7 This is a schematic diagram of the structure of an in-body peeling and cutting system of the present invention, in which a peeling needle is provided in the peeling rod;
[0038] Figure 8 This is a schematic diagram of the structure of the cutting component in an in-body peeling and cutting system according to the present invention;
[0039] Figure 9 This is a cross-sectional view of the cutting component in an in-body peeling and cutting system according to the present invention.
[0040] Figure 10 This is a schematic diagram of the structure of the cutting component in the cutting action state of an in-body peeling and cutting system according to this utility model;
[0041] Figure 11 This is a schematic diagram of the fourth annular structure in an in vivo peeling and cutting system of this utility model;
[0042] Figure 12 This is a cross-sectional view of the fourth annular structure in an in vivo peeling and cutting system of this utility model;
[0043] Figure 13 This is a schematic diagram of the structure of a lifting rod in an in vivo peeling and cutting system according to the present invention;
[0044] Figure 14 This is a schematic diagram of the structure of the cutting component in the initial cutting state of an in-body peeling and cutting system according to the present invention;
[0045] Figure 15This is a schematic diagram of the structure of the cutting component in the in-body peeling and cutting system of this utility model in the state after the cutting action is completed;
[0046] Figure 16 This is a schematic diagram of the structure of the target exfoliated material and adjacent tissue in the removed state of the cutting component in an in vivo peeling and cutting system of this utility model;
[0047] In the attached diagram: 11. Peeling head; 12. Second annular structure; 13. Third annular structure; 14. Fourth annular structure; 15. Blade; 16. Adhesive surface; 17. Sleeve structure; 18. Slender rod; 19. Opening; 20. Sleeve rod; 21. First transmission rod; 22. Second transmission rod; 23. Inner arc-shaped surface; 24. Outer arc-shaped surface; 25. Hollow structure; 26. Peeling needle; 27. Peeling spoon; 28. Sleeve rod; 29. Opening; 31. Active cutting application end A; 32. Active cutting application end B; 33. Target peeled material; 34. Adjacent tissue. Detailed Implementation
[0048] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.
[0049] like Figures 1 to 13 As shown, an in vivo peeling and cutting system according to a preferred embodiment is illustrated, including a peeling device and a cutting device.
[0050] Furthermore, as a preferred embodiment, the peeling device includes a peeling head 11, at least a portion of which is arc-shaped and abuts against the outer side of the in vivo target exfoliant. By moving the peeling head 11, the outer side of the target exfoliant 33 is separated from the adjacent tissue 34.
[0051] Furthermore, as a preferred embodiment, the cutting device is provided with a cutting mechanism, the distal end of which abuts against the boundary of the distal end of the target exfoliated material. By operating the cutting mechanism, the distal end of the target exfoliated material is separated from the adjacent tissue.
[0052] Furthermore, as a preferred embodiment, the target ablation material includes one or more of blood vessels, vascular intima, thrombi or foreign bodies within the vascular lumen.
[0053] Furthermore, in a preferred embodiment, the peeling head 11 is an arc-shaped peeling spoon or a first annular structure, with the arc-shaped peeling spoon abutting against the outside of the target peeling material and the first annular structure sleeved on the outside of the target peeling material.
[0054] like Figure 1-3When the peeling head 11 is an arc-shaped peeling spoon, the arc-shaped peeling spoon 11 has an inner arc-shaped surface 23 and an outer arc-shaped surface 24. The inner arc-shaped surface 23 abuts against the outer side of the target peeling material, and the outer arc-shaped surface 24 abuts against the inner side of the adjacent tissue. The arc-shaped peeling spoon squeezes the adjacent tissue and the target peeling material to peel the target peeling material from the adjacent tissue.
[0055] like Figure 4-5 When the peeling head 11 is a first annular structure, the first annular structure 11 is sleeved on the outside of the target peeling material, the inner periphery of the first annular structure abuts against the outside of the target peeling material, and the outer periphery of the first annular structure abuts against the inner side of the adjacent tissue. The first annular structure squeezes the adjacent tissue and the target peeling material to achieve peeling of the target peeling material from the adjacent tissue.
[0056] Furthermore, as a preferred embodiment, the peeling device also includes a peeling rod 18, the elastic modulus of the peeling rod 18 being not less than 2 GPa, the proximal end of the peeling head 11 being fixed to the first end of the peeling rod, and the second end of the peeling rod 18 having a hand-held portion.
[0057] Preferably, the elastic modulus of the peeling rod is not less than 180 GPa, so that the handheld part can transfer the force to the peeling head in a 1:1 ratio, resist the bending deformation that occurs after the peeling rod and peeling head have entered the human body over a long distance, reduce mechanical loss, and at the same time facilitate precise control of the peeling distance to ensure the subsequent cutting effect.
[0058] Furthermore, as a preferred embodiment, the first annular structure and the peeling rod 18 form an angle α, where 90°≤α<180°.
[0059] Preferably, α is 135°.
[0060] like Figure 6-7 As shown, further, as a preferred embodiment, the peeling rod 18 has a hollow structure 25, which is laid along the axial direction of the peeling rod 18 and extends through the entire peeling rod 18.
[0061] Furthermore, the hollow structure 25 is equipped with a retractable stripping needle 26.
[0062] Furthermore, as a preferred embodiment, the projection of the first annular structure along its central axis is circular or elliptical.
[0063] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.
[0064] Based on the above, this utility model also has the following embodiments:
[0065] For further embodiments of this utility model, please refer to... Figures 1 to 13As shown, the cutting mechanism includes a second annular structure 12 and a third annular structure 13 that are movable relative to each other. The second annular structure 12 and the third annular structure 13 are provided with a mechanical shearing structure 15. The second annular structure 12 and the third annular structure 13 are both sleeved on the outside of the target exfoliated material. By moving at least one of the second annular structure 12 and the third annular structure 13 along the cutting direction, the shearing structure cuts the distal end of the target exfoliated material that has been exfoliated.
[0066] Preferably, the second annular structure 12 and the third annular structure 13 are initially bonded along their axial direction. When cutting is required, at least one of the second annular structure 12 and the third annular structure 13 moves along the bonding surface 16 to allow at least one mechanical shearing structure 15 to cut the distal end of the target exfoliant.
[0067] Preferably, the mechanical shearing structure 15 is a blade.
[0068] In a further embodiment of the present invention, the cutting device further includes a cutting drive member, which drives the second annular structure 12 and / or the third annular structure 13 to move along the cutting direction.
[0069] In a further embodiment of the present invention, the cutting device further includes a first transmission rod 21 and a second transmission rod 22. The first end of the first transmission rod 21 is connected to the second annular structure 12, and the first end of the second transmission rod 22 is connected to the third annular structure 13. The cutting drive is driven by the first transmission rod 21 and / or the second transmission rod 22, so that at least one of the second annular structure 12 and the third annular structure 13 cuts the distal end of the target peeled material along the cutting direction.
[0070] Preferably, the first transmission rod 21 and the second annular structure 12 form a 135° angle, and the second transmission rod 22 and the third annular structure 13 form a 135° angle.
[0071] like Figures 14 to 16 As shown, in a further embodiment of the present invention, the cutting mechanism includes a second annular structure 12 and an active cutting application end A31 disposed on the second annular structure 12. The second annular structure 12 is sleeved on the outside of the target peel and abuts against the distal end of the target peel. The second annular structure 12 facilitates control of the direction and range of the active cutting application end A31 cutting the target peel and applies energy to the active cutting application end.
[0072] In a further embodiment of the present invention, the cutting mechanism includes a third annular structure 13 and an active cutting application end B32 disposed on the third annular structure 13. When the third annular structure 13 is embedded in the target exfoliated material, the active cutting application end A31 and the active cutting application end B32 form an annular energy field, which cuts and separates the target exfoliated material in the annular energy field by thermal effect.
[0073] In a further embodiment of this invention, the energy includes one or more of light, electricity, and radio frequency.
[0074] In a further embodiment of the present invention, the in vivo peeling and cutting system further includes a sleeve.
[0075] In a further embodiment of the present invention, the retrieval member has a fourth annular structure 14, and a retrieval structure 17 is provided inside the fourth annular structure 14. The inner wall of the fourth annular structure 14 is open and allows the retrieval structure 17 to extend out. The retrieval structure 17 retrieves the cut target material.
[0076] Preferably, after the target material is cut, the retrieval member extends into the outside of the cut target material, drives the retrieval structure 17 to extend out of the opening 19 of the fourth annular structure 14, and retrieves the target material.
[0077] In a further embodiment of the present invention, the retrieval component has an arc-shaped peeling spoon 27 and a retrieval rod 28 fixedly connected to the proximal end of the peeling spoon 27. A retrieval structure 17 is provided inside the retrieval rod 28. The side wall of the retrieval rod 28 is open and allows the retrieval structure 17 to extend out. The retrieval structure 17 retrieves the cut target material.
[0078] Preferably, the arc-shaped peeling spoon 27 in the sleeve component has the same structure as the arc-shaped peeling spoon in the peeling component.
[0079] Preferably, after the target material is cut, the retrieval member extends into the outside of the cut target material, drives the retrieval structure 17 to extend out of the side wall opening 29 of the retrieval rod 28, and retrieves the target material.
[0080] In a further embodiment of this utility model, the slinging structure 17 is a slinging wire or a slinging mesh.
[0081] In a further embodiment of the present invention, the retrieval component further includes a retrieval driving component, which drives the retrieval structure to extend from the opening of the fourth annular structure 14 or the retrieval rod 28 until it is retrievaled to the outside of the cut target exfoliated material, and pulls out the retrievaled target exfoliated material.
[0082] In a further embodiment of the present invention, when the retrieval component has a fourth annular structure 14, the retrieval component further includes a sleeve rod 18, the sleeve rod 18 is a hollow structure with open ends, the fourth annular structure 14 is fixed to the first end of the sleeve rod 18, and the first end of the sleeve rod 18 is connected to the opening of the fourth annular structure 14, the retrieval driving component is disposed at the second end of the sleeve rod 18, and the retrieval driving component drives the retrieval structure 17 to retrieve the target peeled material.
[0083] Preferably, the fourth annular structure 14 forms a 90° angle with the sleeve rod 20.
[0084] In a further embodiment of this utility model, the part that enters the human body and touches the target peeling material includes a peeling head 11, a first annular structure, a second annular structure 12, a third annular structure 13, a fourth annular structure 14, a sling wire, and a sling mesh, which are made of X-ray radiopaque material and / or ultrasonically detectable material.
[0085] In a further embodiment of this utility model, the X-ray imaging material and / or the ultrasonically detectable material is one or more of cobalt-chromium alloy, nickel-titanium alloy, stainless steel, titanium alloy, and tantalum alloy.
[0086] In a further embodiment of this utility model, the part that enters the human body and touches the target exfoliated material includes an exfoliating head 11, a first annular structure, a second annular structure 12, a third annular structure 13, a fourth annular structure 14, a sling wire, and a sling mesh. The surface roughness ranges from [R0.03, R50], which makes the surgical process of entering the human tissue and separating the target exfoliated material smooth and facilitates timely detection and positioning using imaging equipment such as ultrasound during the operation.
[0087] This invention separates the outer side of the target material from adjacent tissue using a dissection device and separates the distal end of the target material from adjacent tissue using a cutting device. Using the above system during surgery allows for visual dissection of the target material, ensuring thorough removal to guarantee surgical efficacy, reduce surgical trauma, lower surgical costs, and shorten the patient's hospitalization and recovery period. Furthermore, it eliminates the need for artificial blood vessels, reducing the probability of postoperative complications. It is suitable for clearing narrowed or blocked lumens, especially for removing old thrombi or large deposits in lumens, as well as foreign objects such as long-term placed stents in lumens.
[0088] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An in vivo peeling and cutting system, characterized in that, include: A peeling device, the peeling device including a peeling head, at least a portion of which is arc-shaped and abuts against the outer side of an in vivo target to be peeled off, wherein by moving the peeling head, the outer side of the target to be peeled off is separated from adjacent tissue; A cutting device is provided with a cutting mechanism, the distal end of which abuts against the boundary of the distal end of the target abutment. By operating the cutting mechanism, the distal end of the target abutment is separated from the adjacent tissue.
2. The in vivo peeling and cutting system according to claim 1, characterized in that, The target material to be removed includes one or more of blood vessels, vascular intima, thrombi in the vascular lumen, or foreign bodies. The peeling head is an arc-shaped peeling spoon or a first annular structure. The arc-shaped peeling spoon abuts against the outside of the target peeling material, and the first annular structure is sleeved on the outside of the target peeling material. The peeling device further includes a peeling rod with an elastic modulus of not less than 2 GPa. The proximal end of the peeling head is fixed to the first end of the peeling rod, and the second end of the peeling rod has a hand-held portion.
3. The in vivo peeling and cutting system according to claim 2, characterized in that, The first annular structure and the peeling rod form an angle α, where 90° ≤ α < 180°; The peeling rod has a hollow structure, which is laid along the axial direction of the peeling rod and runs through the entire peeling rod. The projection of the first annular structure along its central axis is circular or elliptical.
4. The in vivo peeling and cutting system according to claim 1, characterized in that, The cutting mechanism includes a second ring structure and a third ring structure that can move relative to each other. The second ring structure and the third ring structure are provided with a mechanical shearing structure. The second ring structure and the third ring structure are both sleeved on the outside of the target peeled material. The mechanical shearing structure cuts the distal end of the peeled target peeled material by moving at least one of the second ring structure and the third ring structure along the cutting direction. The cutting device further includes a cutting drive component, which drives the second annular structure and / or the third annular structure to move along the cutting direction; The cutting device further includes a first transmission rod and a second transmission rod. The first end of the first transmission rod is connected to a second annular structure, and the first end of the second transmission rod is connected to a third annular structure. The cutting drive unit drives the first transmission rod and / or the second transmission rod to cause at least one of the second annular structure and the third annular structure to cut the distal end of the peeled target material along the cutting direction.
5. The in vivo peeling and cutting system according to claim 4, characterized in that, The cutting mechanism includes a second annular structure and an active cutting application end A disposed on the second annular structure. The second annular structure is sleeved on the outside of the target peel and abuts against the distal end of the target peel. The second annular structure facilitates control of the direction and range of the active cutting application end A cutting the target peel, and applies energy to the active cutting application end.
6. The in vivo peeling and cutting system according to claim 5, characterized in that, The cutting mechanism includes a third ring structure and an active cutting application end B disposed on the third ring structure. When the third ring structure is built into the target exfoliated material, the active cutting application end A and the active cutting application end B form a ring energy field, which is used to cut and separate the target exfoliated material within the ring energy field by thermal effect. The energy includes one or more of light, electricity, and radio frequency.
7. The in vivo peeling and cutting system according to claim 1, characterized in that, Also includes: A slinger has a fourth annular structure, within which a slinging structure is provided. The inner wall of the fourth annular structure is open and allows the slinging structure to extend out. The slinging structure slings the cut target material. Alternatively, the retrieval component has an arc-shaped peeling spoon and a retrieval rod fixedly connected to the proximal end of the peeling spoon. The retrieval rod is provided with a retrieval structure. The sidewall of the retrieval rod is open and allows the retrieval structure to extend out. The retrieval structure retrieves the cut target material.
8. The in vivo peeling and cutting system according to claim 1, characterized in that, The snagging structure is a snagging wire or a snagging mesh.
9. The in vivo peeling and cutting system according to claim 7, characterized in that, The retrieval component further includes a retrieval drive component, which drives the retrieval structure to extend from the opening of the fourth annular structure or the retrieval rod until it retrievals the outside of the cut target exfoliant and pulls out the retrieval target exfoliant.
10. The in vivo peeling and cutting system according to claim 9, characterized in that, When the retrieval component has the fourth annular structure, the retrieval component further includes a sleeve rod, which is a hollow structure with open ends. The fourth annular structure is fixed to the first end of the sleeve rod, and the first end of the sleeve rod communicates with the opening of the fourth annular structure. The retrieval driving member is located at the second end of the sleeve rod, and the retrieval driving member drives the retrieval structure to retrieve the target exfoliated object.