Self-adaptive intimal plaque reverse peeling device

Abstract

The invention provides a self-adaptive intimal plaque reverse peeler. The self-adaptive intimal plaque reverse peeler is characterized by comprising a reverse peeler body and a cutting part, the reverse stripping device body is composed of a self-adaptive stripping ring and a push-pull rod; the self-adaptive stripping ring has a structure capable of stretching according to pressure, is arranged at the tail end of the push-pull rod, and has a groove-shaped structure with a C-shaped or U-shaped section; the cutting piece is composed of a cutting body and a traction piece. The cutting main body is arranged in the groove-shaped structure of the self-adaptive stripping ring, and the cutting action is completed in a ring diameter reducing mode along with lifting of the traction piece. The self-adaptive reverse peeling device can adjust the radial width in a self-adaptive manner along with blood vessels, so that plaques are completely peeled off.

Description

Technical Field

[0001] The invention relates to medical equipment, in particular to an adaptive arterial intimal plaque reverse stripping device. Background Art

[0002] At present, the reverse stripper is widely used in the intimal plaque stripping surgery for patients with deep artery occlusion that is not suitable for dissection, such as the common carotid artery, femoral artery, iliac artery, innominate artery, etc. During the operation, the target artery is longitudinally dissected to find the anatomical layer between the intimal plaque and the vascular wall, and the circular ring at the head of the reverse stripper is inserted. Under fluoroscopic monitoring, the reverse stripper is pushed toward the proximal end, and the intimal plaque is then stripped from the blood vessel. When the head of the reverse stripper reaches the beginning of the branch vessel, the internal steel wire is pulled out to complete the plaque cutting, and then the intimal plaque can be clamped out, and the vascular artery occlusion is then relieved.

[0003] However, the existing reverse stripper cannot autonomously adjust the diameter of the tube to cope with the complex intravascular environment due to its fixed shape. Since the thickness of blood vessels is inconsistent between different people and between different sections of the same blood vessel, for example, the proximal end of the common carotid artery is thicker than the distal end, resulting in the inconsistency of the front and back diameters of the corresponding plaques. When the reverse stripper with a fixed shape is pushed over the gradually thickening intimal plaque, it is very easy to cause the thicker proximal plaque to rupture, incomplete stripping and other problems, which may cause a series of surgical complications, seriously affecting the success rate of the operation.

[0004] Therefore, there is currently a lack of a reverse peeling device that can self-adaptively adjust the radial width according to the specific conditions of the vascular endothelial plaque to reduce the occurrence of related surgical complications and improve the success rate of the operation. Summary of the invention

[0005] The present invention aims to overcome the above-mentioned defects and provide a device that can autonomously adjust according to changes in the intravascular environment to completely remove the plaque.

[0006] The present invention provides an adaptive arterial intimal plaque reverse stripping device, which can adaptively adjust the radial width along with the blood vessel, and is used for complete plaque stripping, and is characterized by comprising a reverse stripping device body and a cutting piece;

[0007] The reverse stripper body is composed of an adaptive stripping ring and a push-pull rod;

[0008] The above-mentioned adaptive stripping ring has a structure that can be expanded and contracted according to pressure, and is arranged at the end of the push-pull rod, and has a groove-shaped configuration with a C-shaped or U-shaped cross-section;

[0009] The above-mentioned cutting element is composed of a cutting body and a pulling element;

[0010] The cutting body is arranged in the groove-shaped configuration of the adaptive stripping ring, and completes the cutting action by reducing the ring diameter as the traction member is pulled.

[0011] Furthermore, the present invention provides an adaptive arterial intimal plaque reverse stripping device, which is also characterized by:

[0012] A part of the ring body of the adaptive peeling ring is made of elastic material.

[0013] Furthermore, the present invention provides an adaptive arterial intimal plaque reverse stripping device, which is also characterized by:

[0014] The ring body of the above-mentioned adaptive stripping ring is composed of a fixed block and an elastic block;

[0015] The fixed block and the elastic block are arranged at intervals.

[0016] Furthermore, the present invention provides an adaptive arterial intimal plaque reverse stripping device, which is also characterized by:

[0017] The elastic block is a retractable hinged shape made of elastic material.

[0018] Furthermore, the present invention provides an adaptive arterial intimal plaque reverse stripping device, which is also characterized by:

[0019] The push-pull rod is a hollow structure;

[0020] The hollow structure is connected to the groove-shaped configuration of the C-shaped or U-shaped cross section of the adaptive stripping ring.

[0021] Furthermore, the present invention provides an adaptive arterial intimal plaque reverse stripping device, which is also characterized by:

[0022] The cutting piece is a sharp filament. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 , a schematic diagram of the structure of an adaptive arterial intimal plaque stripping device provided in this embodiment; Figure 2 , a schematic diagram of a retractable structure of an adaptive arterial intimal plaque reverse stripping device provided in this embodiment; DETAILED DESCRIPTION

[0024] The present invention is capable of various modifications and various embodiments, and therefore specific embodiments are illustrated and described in the accompanying drawings. However, this is not intended to limit the present invention to specific implementations, but should be understood to include all modifications, equivalents, and even substitutes that fall within the concept and technical scope of the present invention.

[0025] like Figure 1 As shown, the adaptive reverse stripper provided in this embodiment can adaptively adjust the radial width along with the blood vessel, so as to continuously adjust according to the width of the inner wall of the blood vessel during the extraction process and synchronously scrape the plaque, so that the plaque is completely separated from the blood vessel wall, thereby completing the comprehensive stripping of the plaque.

[0026] It comprises a reverse stripper body and a cutting piece;

[0027] The reverse stripper body is composed of an adaptive stripping ring and a push-pull rod, which form a shape similar to a musical note;

[0028] The adaptive stripping ring has a structure that can be expanded and contracted according to pressure, is arranged at the end of the push-pull rod, and has a groove-shaped configuration with a C-shaped or U-shaped cross section;

[0029] The above-mentioned structure that can be expanded and contracted according to pressure refers to Figure 2 As shown, the ring body of the adaptive peeling ring is a ring composed of a fixed block and an elastic block; the fixed block is a ring segment made of hard metal, and the elastic block is made of elastic material, and its shape is a ring segment formed by an elastic structure (such as: a foldable part similar to a foldable lantern or a stretchable part of an accordion), and a complete ring is formed by splicing the two ring segments. There is at least one elastic block, and preferably the fixed block and the elastic block are arranged to be spaced apart from each other.

[0030] During use, the fixed block supports / controls the overall shape, and the elastic block is based on its retractable structural characteristics (i.e., it is deformed / compressed by pressure, causing the entire ring diameter to change, for example: shrinking or deforming). During the movement of the blood vessel, it deforms according to the change in the diameter of the blood vessel itself (no pressure is the initial state, and the blood vessel becomes smaller and deforms due to pressure from the tube wall), thereby achieving the shape feature that the ring diameter of the entire peeling ring can be adaptively adjusted.

[0031] The above-mentioned groove-shaped configuration with a C-shaped or U-shaped cross-section is provided to accommodate or embed the equipment cutting piece, that is, the adaptive stripping ring is hollow or partially hollow. Similarly, in order to achieve the effect of controlling the cutting piece, the push-pull rod is hollow, and the hollow parts of the two are interconnected, so that the cutting piece can reach the adaptive stripping ring at the far end (or the starting position of the plaque stripping inside the patient's wound surface) on the one hand, and the operating end at the head of the device (or the operable area outside the patient's wound surface) on the other hand. During use, the adaptive stripping ring is first pushed to reach the target stripping starting point in the blood vessel (in this process, the plaque and the inner wall of the blood vessel have been stripped due to the adaptive structure of the adaptive stripping ring), and the distal end of the plaque is cut off by operating the cutting piece at the operating end.

[0032] The cutting element capable of achieving the above-mentioned effect is preferably a sharp filament, such as a fishing line or similar material, which is composed of a cutting body and a pulling element;

[0033] The cutting body is preferably elastic so that it can be embedded in the groove-shaped configuration of the adaptive stripping ring through elastic force. Of course, it can also be made of a non-tough material and can be stuck in the groove at the beginning of installation;

[0034] The traction piece is an extension section of the cutting body, which passes through the hollow tube body of the push-pull rod to reach the outlet position. During use, the traction piece is pulled up by the outlet end to reduce the ring diameter, thereby completing the cutting action.

[0035] Although the above description is centered on the embodiment, it is only an example and does not limit the present invention. It is clear to those skilled in the art that various modifications and applications not illustrated above can be made within the scope of the essential characteristics of the present embodiment. For example, each component specifically shown in the embodiment can be implemented through modification. Moreover, various differences related to such modifications and applications should be interpreted as being included in the scope of the present invention as defined in the attached claims.

Claims

1. An adaptive arterial intimal plaque reverse stripping device, which can adaptively adjust the radial width along with the blood vessel, and is used for complete plaque stripping, characterized by: It includes a reverse stripper body and a cutting piece; The reverse stripper body is composed of an adaptive stripping ring and a push-pull rod; The adaptive stripping ring has a structure that can be expanded and contracted according to pressure, is arranged at the end of the push-pull rod, and has a groove-shaped configuration with a cross-section of C-shaped, U-shaped or straight; The cutting member is composed of a cutting body and a pulling member; The cutting body is arranged in the groove-shaped configuration of the adaptive stripping ring, and completes the cutting action by reducing the ring diameter as the traction member is pulled.

2. The adaptive arterial intimal plaque stripping device according to claim 1, characterized in that: A portion of the ring body of the adaptive peeling ring is made of elastic material.

3. The adaptive arterial intimal plaque stripping device according to claim 1, characterized in that: The ring body of the adaptive stripping ring is composed of a fixed block and an elastic block; The fixed block and the elastic block are arranged at intervals.

4. The adaptive arterial intimal plaque stripping device according to claim 3, characterized in that: The elastic block is a retractable hinged shape made of elastic material.

5. The adaptive arterial intimal plaque stripping device according to claim 1, characterized in that: The push-pull rod is a hollow structure; The hollow structure is connected to the groove-shaped configuration of the adaptive peeling ring with a C-shaped or U-shaped cross section.

6. The adaptive arterial intimal plaque stripping device according to claim 1, characterized in that: The cutting piece is a sharp filament.

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