Intravascular plaque removing device
By designing a self-expanding scraping stent and a mesh collection structure for intravascular plaque removal, the problem of incomplete plaque removal and large trauma in existing technologies has been solved, achieving non-invasive and thorough removal with low-risk restenosis.
Patent Information
- Application Number
- CN202422827416.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-19
AI Technical Summary
Current intravascular plaque removal techniques cannot completely remove plaques, posing a risk of restenosis and causing significant trauma to patients.
Design an intravascular plaque removal device including a scraping stent. The scraping stent is a self-expanding structure that removes plaque by scraping and collects the removed plaque through a mesh collection structure to reduce residue.
It achieves complete plaque removal without the need for prolonged observation, reducing patient trauma and lowering the risk of restenosis.
Smart Images
Figure CN223586012U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of medical apparatus and instruments, in particular to a blood vessel plaque removing device. BACKGROUND
[0002] In the aspect of blood vessel plaque removing, invasive treatment methods include drug-coated balloon dilatation, drug-eluting stent implantation and endarterectomy; these technologies either remove blood vessel atheromatous plaque through blood vessel dilatation and drug action, or directly strip the proliferative intima; although the former two can improve blood vessel condition to a certain extent, they need long-term monitoring of plaque changes and cannot ensure complete plaque removal, so there is a possibility of blood vessel restenosis; while endarterectomy can completely eliminate plaque, it causes great trauma to patients. SUMMARY
[0003] The utility model provides a blood vessel plaque removing device, which can at least solve one problem in the background art.
[0004] A blood vessel plaque removing device comprises a main body part and a scraping support arranged on the main body part, the scraping support comprises a plurality of grid units, and any grid unit is arc-shaped.
[0005] The scraping support is a self-expanding structure, and its two ends are closed.
[0006] The scraping support is further provided with a support frame at the center thereof, and the distal end of the support frame is provided with a mesh collecting structure.
[0007] Preferably, the main body part comprises:
[0008] an outer tube;
[0009] a handle connected to the outer tube; and
[0010] a push rod penetrating through the handle and the outer tube.
[0011] The proximal end of the scraping support is connected to the outer tube, and the other end is connected to the push rod.
[0012] Preferably, the push rod is spline-coupled with the outer tube, and when the handle rotates, the push rod rotates together with the outer tube.
[0013] Preferably, the handle comprises a fixed part and a rotating part, the fixed part is threadedly connected to the rotating part, and the rotating part is fixedly connected to the outer tube.
[0014] Preferably, the push rod is a memory alloy tube.
[0015] Preferably, the utility model further comprises an outer catheter, which is sleeved on the outer tube and the scraping support.
[0016] Compared with the prior art, the beneficial effects of the utility model are that: the utility model's scraping support cleans the plaque in the blood vessel by scraping, and the cut plaque is collected by the net-shaped collection structure, so that the plaque residue is reduced, and long-time observation is not needed, and the trauma to the patient is small. BRIEF DESCRIPTION OF DRAWINGS
[0017] Fig. 1 It is a structural schematic diagram of the utility model;
[0018] Fig. 2 It is an expansion diagram of the scraping support;
[0019] Fig. 3 It is a structural schematic diagram of the grid unit.
[0020] BRIEF DESCRIPTION OF DRAWINGS:
[0021] 1-outer tube, 2-push rod, 3-fixed part, 4-rotary part, 5-outer catheter, 6-scraping support, 7-grid unit, 8-supporting frame, 9-net-shaped collection structure. DETAILED DESCRIPTION
[0022] One specific embodiment of the utility model is described in detail below in combination with the drawings, but it should be understood that the protection scope of the utility model is not limited by the specific embodiment.
[0023] As Figs. 1-3 shown, the utility model embodiment provides a kind of plaque removal device in blood vessel, including main part and the scraping support 6 of setting on main part;
[0024] Wherein, main part includes outer tube 1, handle and push rod 2, handle is connected with outer tube 1, specifically, handle includes fixed part 3 and rotary part 4, fixed part 3 is connected with rotary part 4 by screw thread, rotary part 4 is fixedly connected with outer tube 1, push rod 2 is spline-coupled with outer tube 1, when rotary part 4 of handle is rotated, push rod 2 can be driven with outer tube 1 rotation, and axial movement is simultaneously rotated, i.e. let scraping support 6 scrape subintimal plaque in blood vessel;
[0025] Push rod 2 is memory alloy tube, it is through handle and outer tube 1, the proximal end of scraping support 6 is connected on outer tube 1, other end is connected on push rod 2, by moving push rod 2 can change the overall length of scraping support 6, to control its diameter after collision size;
[0026] The scraping support 6 of the embodiment is a self-expanding structure, both ends of which are tapered, and comprises a plurality of grid units 7, any of which is arc-shaped, so that the middle part of the expanded scraping support 6 is cylindrical; the scraping support 6 is further provided with a support frame 8 at the center thereof, the support frame 8 has a passage for the push rod 2 to pass through, and plays a role of supporting the center position of the scraping support 6, so as to ensure that the scraping support 6 is in contact with the plaque, and the net-shaped collection structure 9 is provided at the distal end of the scraping support 6, the net-shaped collection structure 9 is also a self-expanding structure, which is located in the scraping support 6, and the mesh density thereof is much lower than that of the scraping support 6, so as to realize the recovery of the plaque.
[0027] In the initial state, the outer tube 1 and the scraping support 6 are loaded in an outer catheter 5, in use, the device is usually inserted into the blood vessel through the outer catheter 5, and is pushed along the blood vessel until the distal end part thereof passes through the plaque to be removed; then the device is pushed out of the outer catheter 5, the scraping support 6 is expanded and in contact with the plaque, by rotating the rotating part 4, the plaque is scraped off in the plaque formation area by the scraping support 6, and the plaque is captured by the net-shaped collection structure 9, after the scraping is completed, the device is pulled back through the outer catheter 5.
[0028] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit and essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.
[0029] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments which can be understood by those skilled in the art.
Claims
1. An intravascular atherectomy device, comprising: The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape.
2. An intravascular plaque removal device as in claim 1, wherein, The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape.
3. An intravascular plaque removal device as in claim 2, wherein the distal end of the elongate member is configured to be inserted into a blood vessel. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape.
4. An intravascular plaque removal device as in claim 2, wherein the distal end of the elongate member is configured to be inserted into a blood vessel and the proximal end of the elongate member is configured to be held by a user. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape.
5. The intravascular plaque removal device of claim 2, wherein the distal end of the elongate member is configured to be inserted into a blood vessel of a patient. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape.
6. An intravascular plaque removal device as in claim 2, wherein the distal end of the elongate member is configured to be inserted into a blood vessel. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof are of a closed end shape. The scraping support (6) is of a self-expanding structure, and both ends thereof