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CN-121971780-A - Improved medical balloon device

CN121971780ACN 121971780 ACN121971780 ACN 121971780ACN-121971780-A

Abstract

The application discloses an improved medical balloon device which comprises a balloon body, reinforcing nets and a grid structure, wherein the balloon body is of a hollow structure and is provided with a far end and a near end which are opposite, the near end of the balloon body is communicated with a catheter used for conveying fluid into the balloon body, the reinforcing nets are fixed on the periphery of the balloon body, the reinforcing nets are woven by single reinforcing wires and form the grid structure which is arranged in rows and columns, the rows are arranged along the axial direction of the balloon body, the adjacent two rows have the same span along the axial direction of the balloon body, the columns are arranged along the circumferential direction of the balloon body, and the adjacent two columns have different spans along the circumferential direction of the balloon body.

Inventors

  • GU ZHONGWEI
  • ZHONG SHENGNAN
  • FANG BAOMING

Assignees

  • 杭州矩正医疗科技有限公司

Dates

Publication Date
20260505
Application Date
20210915

Claims (10)

  1. 1. Improved medical balloon device, characterized in that it comprises: A balloon body having a hollow structure and having opposite distal and proximal ends, the balloon body being integrally raisable after fluid is delivered to the interior of the balloon body; The reinforcing mesh is fixed on the balloon body, is woven by single reinforcing wires and forms a grid structure in row and column arrangement, is axially arranged along the balloon body between each row, has the same span in the axial direction of the balloon body between every two adjacent rows, is circumferentially arranged along the balloon body between each column, and has different spans in the circumferential direction of the balloon body between every two adjacent columns; The elasticity of the reinforcing wire is smaller than that of the balloon body, the reinforcing wire is spirally wound outside the balloon body, the reinforcing wire is further provided with a relief structure in the process of extending along a winding path, the relief structure is provided with opposite wave crests and wave troughs, the spiral winding is arranged into a plurality of circles which are axially arranged along the balloon body, and in two adjacent circles, the wave crests of one circle are mutually wound with the two adjacent wave troughs of the other circle.
  2. 2. The improved medical balloon device according to claim 1, wherein the width of the wave crest is W1, the width of the wave trough is W2, and w1:w2=1:1.2-6 is satisfied.
  3. 3. The improved medical balloon device according to claim 1, wherein the balloon body comprises an equal diameter section at the middle part and tapered reducing sections at two ends along the axial direction, and a plurality of cell structures are enclosed between adjacent circles in the equal diameter section.
  4. 4. The improved medical balloon device according to claim 1, wherein the number of cells in the circumferential direction of the balloon body is 6 to 48.
  5. 5. The improved medical balloon device of claim 1, wherein the single reinforcing wire is woven from a head end of the balloon body to a proximal end of the balloon body, the reinforcing wire extending and being secured at both ends of the balloon body.
  6. 6. The improved medical balloon device of claim 1, wherein the reinforcing wire is made of a flexible biomedical polymeric material selected from the group consisting of nylon, polyether block polyamide, polytetrafluoroethylene, and polyethylene.
  7. 7. The improved medical balloon device according to claim 1, wherein the reinforcing wire is a round wire or a flat wire, wherein the diameter of the round wire is 50-200 μm when the round wire is a round wire, and the width of the flat wire is 100-300 μm and the thickness is 50-100 μm when the flat wire is a flat wire.
  8. 8. The improved medical balloon device according to claim 3, wherein each unit cell is surrounded by a peak and has an area of S1, each unit cell is surrounded by a trough and has an area of S2, and s1+s2=4 to 20mm 2 is satisfied.
  9. 9. The improved medical balloon device of claim 2, wherein the balloon body is pressurized to 40atm, the protrusion height of each first cell ranges from 0.1 to 1mm, and the protrusion height of each second cell ranges from 0.1 to 1mm.
  10. 10. The improved medical balloon device according to claim 2, wherein the circumferential length of the balloon body is L1, L1 being 3-24 times the sum of W1 and W2.

Description

Improved medical balloon device The application relates to a divisional application with the name of improved medical balloon device, the application date of the original application is 2021-09-15, and the application number of the original application is 202111084184.0. Technical Field The application relates to the technical field of medical instruments, in particular to an improved medical balloon device. Background Balloon angioplasty, the treatment of a primary therapeutic means or auxiliary stent or other device, remains the core direction of vascular intervention. The problem of post-operative restenosis in endoluminal treatment has been of great concern. Although the bare metal stent and the drug eluting stent can improve the patency rate after the common balloon dilatation and the formation, the problems of restenosis in the stent caused by delayed endothelial healing, chronic inflammatory reaction, new-born atherosclerosis, stent fracture, in-stent thrombosis and the like are caused. Balloon dilation during angioplasty has a critical impact on the outcome of the treatment, with insufficient inflation pressure leading to elastic recoil, and excessive dilation leading to neointimal hyperplasia, restenosis. The best therapeutic results are obtained and there is a need to reduce the strain of the vessel wall. Compared with the common saccule, the special saccule is a product combining other technologies on the basis of the common saccule, has the functions of saccule expansion, medicine carrying, cutting, freezing and the like, and provides a new strategy and method for treating peripheral atherosclerosis. Wherein, the high-pressure saccule is designed for treating the condition of the vascular wall with complex condition, and the condition of the vascular blockage caused by severe calcification occurs. Liang Qiongxian et al compared the merits of the balloon and the common balloon in the text of "comparison of the effect of the balloon and the common peripheral balloon on treating the forearm autologous arteriovenous fistula stenosis", and the results show that the surgical success rate of the balloon and the patency rate after 6 months are higher than those of the common balloon. The balloon is characterized in that the balloon is burst pressure of 30atm, and can avoid the occurrence of a dog bone effect during expansion, thereby playing an expansion role on calcified and blocked vascular lesions. In one study of Trerotola SO et al on standard high pressure balloon treatment of 87 cases of venous stenosis, the success rate of expansion was 100% after using ultra-high pressure balloons for 7 of the patients with failed expansion. The existing high-pressure balloon can be combined with reinforcing fibers outside the balloon body, but other problems are brought, and the overall effect is still to be improved. Disclosure of Invention In view of the above, it is desirable to provide a medical balloon device. An improved medical balloon device comprising: the balloon body is of a hollow structure and is provided with a far end and a near end which are opposite, and a catheter for conveying fluid into the balloon body is communicated with the near end of the balloon body; the reinforcing mesh is fixed on the outer side of the balloon body, the reinforcing mesh is woven by single reinforcing wires and forms a grid structure in row and column arrangement, the reinforcing mesh is arranged along the axial direction of the balloon body between each row, the same span is arranged along the axial direction of the balloon body between every two adjacent rows, the reinforcing mesh is arranged along the circumferential direction of the balloon body between each column, and the different spans are arranged along the circumferential direction of the balloon body between every two adjacent columns. The following provides several alternatives, but not as additional limitations to the above-described overall scheme, and only further additions or preferences, each of which may be individually combined for the above-described overall scheme, or may be combined among multiple alternatives, without technical or logical contradictions. Optionally, the reinforcing wire is spirally wound outside the balloon body, the reinforcing wire is further provided with a relief structure in the process of extending along the winding path, the relief structure is provided with opposite wave crests and wave troughs, the spiral winding is a plurality of circles which are axially arranged along the balloon body, and in two adjacent circles, the wave crests of one circle are mutually wound with the two adjacent wave troughs of the other circle. Optionally, the width of the wave crest is W1, the width of the wave trough is W2, and the W1: w2=1:1.2-6 is satisfied. Optionally, the reinforcing mesh is fixed on the outer surface of the balloon body in a bonding or hot melting mode. Optionally, the balloon body includes the constant diameter section