A pipeline type inflatable air bag with controllable deformation amount and a preparation method thereof

Abstract

The application relates to a pipeline type inflatable air bag with controllable deformation and a preparation method thereof, and belongs to the technical field of air bag design. The air bag comprises an elastic hollow pipe, a threaded hollow pipe, two plugs and a rope. A plurality of rigid columns one are arranged on the inner wall of the elastic hollow pipe in the axial direction, a plurality of rope rings one are arranged on each rigid column one, a plurality of rigid columns two are arranged on the outer wall of the threaded hollow pipe in the axial direction, a plurality of rope rings two are arranged on each rigid column two, the elastic hollow pipe and the threaded hollow pipe are coaxially arranged, the elastic hollow pipe is arranged outside the threaded hollow pipe, the upper and lower ends of the elastic hollow pipe and the threaded hollow pipe are connected through the plugs, one of the plugs is provided with an inflation hole, and the rope rings one and the rope rings two are connected through the rope. In the expansion process, the air bag can still keep the middle channel, blood circulation is guaranteed, and enough space is reserved for surgical instruments; the maximum deformation of the air bag is controllable, and the phenomenon of excessive expansion can be prevented.

Description

Technical Field

[0001] This invention belongs to the field of inflatable airbag design technology, specifically relating to a tubular inflatable airbag with controllable deformation and its preparation method. Background Technology

[0002] Cardiovascular and cerebrovascular diseases are a collective term for diseases of the heart and brain blood vessels. They broadly refer to ischemic or hemorrhagic diseases of the heart, brain, and other tissues caused by conditions such as hyperlipidemia, high blood viscosity, atherosclerosis, and hypertension. Cardiovascular and cerebrovascular diseases are a common and serious threat to human health, especially to the health of middle-aged and elderly people over 50 years of age. They are characterized by high morbidity, high disability rate, and high mortality rate. Even with the most advanced and comprehensive treatment methods, more than 50% of stroke survivors are still unable to live independently. Worldwide, up to 15 million people die from cardiovascular and cerebrovascular diseases each year, making it the leading cause of death.

[0003] To this end, extensive research has been conducted on unblocking blood vessels, yielding fruitful results and enabling the development and application of cardiovascular and cerebrovascular unblocking technologies such as medication, stents, and balloon angioplasty. In comparison, balloon angioplasty is a minimally invasive procedure. Patients with mitral stenosis or severe coronary artery disease can avoid major open-chest surgery by using balloon angioplasty. Currently, this technology is relatively mature, with high safety, minimal trauma, rapid recovery, and low cost, making it easily accepted by patients and their families. It is a very promising medical technology.

[0004] Nevertheless, for lesions with severe stenosis and calcification, balloon angioplasty carries a significant risk of vascular elastic recoil. After dilation and balloon removal, the vessel quickly returns to its previous state of severe stenosis or even occlusion. Insufficient support from the cardiac balloon can worsen existing stenosis and occlusion. Simple balloon angioplasty has a low success rate and poor efficacy for such stenotic lesions, with a high probability of restenosis. Furthermore, balloon angioplasty can lead to complications such as endothelial tearing, tissue bleeding, collagen exposure, aortic dissection, or acute occlusion. Using an excessively large balloon can cause over-dilation, resulting in intimal tearing, aortic dissection, or even hemorrhage, endangering life. Summary of the Invention

[0005] This invention addresses the risks associated with balloon dilation by providing a tubular inflatable balloon with controllable deformation and its preparation method. The prepared balloon can achieve limited inflation while ensuring the passage of the intermediate tube.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] A tubular inflatable airbag with controllable deformation, the airbag comprising an elastic hollow tube, a threaded hollow tube, two plugs and a rope;

[0008] The inner wall of the elastic hollow tube is provided with a number of rigid columns 1 along the axial direction, and each rigid column 1 is provided with a number of rope loops 1. The outer wall of the threaded hollow tube is provided with a number of rigid columns 2 along the axial direction, and each rigid column 2 is provided with a number of rope loops 2.

[0009] The elastic hollow tube and the threaded hollow tube are coaxially arranged, with the elastic hollow tube located outside the threaded hollow tube. The upper and lower ends of the elastic hollow tube and the threaded hollow tube are sealed and connected by plugs, one of which has an air inlet. The first rope ring and the second rope ring are connected by a rope.

[0010] A method for preparing the above-mentioned tubular inflatable airbag with controllable deformation, the method comprising:

[0011] Step 1: Manufacture a cylindrical hollow tube mold. Along the axial direction of the hollow tube, symmetrically arrange several rigid columns 1 on the outer surface of the mold wall. Among them, several rope rings 1 are evenly distributed in the same direction of the rigid columns 1. The rope rings 1 are tightly embedded in the mold wall. Integrate the elastic matrix material with the rigid columns 1 on the outer surface of the cylindrical hollow tube mold. Demold to obtain an elastic hollow tube with built-in rigid columns 1.

[0012] Step 2: Design two plugs based on the dimensions of both ends of the elastic hollow tube. Each plug has a threaded hole in the middle, and one of the plugs has an air inlet. Connect the two plugs with the same double-threaded hollow rod through the threaded hole. Rigid columns 2 are symmetrically arranged on the surface of the threaded hollow rod, and rope rings 2 are evenly arranged on the surface of the rigid columns 2.

[0013] Step 3: Connect the first tethering ring on the rigid column one inside the elastic hollow tube to the second tethering ring evenly distributed on the surface of the double-threaded hollow rod with ropes of equal length to limit the maximum deformation of the inflatable airbag while keeping the length of the elastic hollow tube unchanged.

[0014] Step 4: Connect both ends of the elastic hollow tube to the plugs and perform pressure-resistant and airtight treatment to obtain an inflatable airbag with controllable maximum deformation.

[0015] The advantages of this invention over the prior art are as follows:

[0016] (1) The balloon can maintain the middle channel during expansion to ensure blood flow, while reserving enough space for surgical instruments.

[0017] (2) The maximum deformation of the airbag is controllable, which can prevent excessive expansion;

[0018] (3) The structure is simple and the cost is low. The main structure can be reused. Attached Figure Description

[0019] Figure 1A schematic diagram of the side surface of a rigid column assembled on the mold surface;

[0020] Figure 2 Top view of assembling rigid columns on the mold surface;

[0021] Figure 3 Top view of the basic structure of the mold / rigid column / elastic hollow tube;

[0022] Figure 4 This is a top view of a rigid column airbag composite structure.

[0023] Figure 5 This is a schematic diagram of a double-threaded hollow rod structure.

[0024] Figure 6 Top view of a double-threaded hollow rod;

[0025] Figure 7 Top view of the assembly structure of a rigid column airbag with unconnected ropes and a double-threaded hollow rod;

[0026] Figure 8 Top view of the rigid column airbag and double-threaded hollow rod assembly structure after rope connection;

[0027] Figure 9 This is a diagram illustrating the limiting effect of the rope on the airbag deformation. Figure 1 ;

[0028] Figure 10 This is a diagram illustrating the limiting effect of the rope on the airbag deformation. Figure 2 ;

[0029] Figure 11 This is a diagram illustrating the limiting effect of the rope on the airbag deformation. Figure 3 ;

[0030] Figure 12 This is a diagram showing the overall appearance and reversible deformation of a tubular inflatable airbag. Detailed Implementation

[0031] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments, but it is not limited thereto. Any modifications or equivalent substitutions to the technical solution of the present invention that do not depart from the spirit and scope of the technical solution of the present invention should be covered within the protection scope of the present invention.

[0032] Specific implementation method one: This implementation method describes a tubular inflatable airbag with controllable deformation. The airbag includes an elastic hollow tube 1, a threaded hollow tube 2, two plugs 3 and a rope 4.

[0033] The inner wall of the elastic hollow tube 1 is provided with a number of rigid columns 5 along the axial direction, and each rigid column 5 is provided with a number of rope loops 6. The outer wall of the threaded hollow tube 2 is provided with a number of rigid columns 7 along the axial direction, and each rigid column 7 is provided with a number of rope loops 8.

[0034] The elastic hollow tube 1 and the threaded hollow tube 2 are coaxially arranged, with the elastic hollow tube 1 positioned outside the threaded hollow tube 2. Both the upper and lower ends of the elastic hollow tube 1 and the threaded hollow tube 2 are sealed together by plugs 3, one of which has an inflation hole. The first tethering ring 6 and the second tethering ring 8 are connected by a rope 4. The overall diameter of the inflatable airbag is controlled between 0.5 and 7 mm.

[0035] Specific Implementation Method Two: In the tube-type inflatable airbag with controllable deformation described in Specific Implementation Method One, the rigid column 5 and the rigid column 7 are one of metal columns, plastic columns, and composite material columns.

[0036] Specific implementation method three: A tubular inflatable airbag with controllable deformation as described in specific implementation method one or two, wherein the first tethering ring 6 and the second tethering ring 8 are set at the same height and angle.

[0037] Specific Implementation Method Four: A method for preparing a tubular inflatable airbag with controllable deformation as described in any one of Specific Implementation Methods One to Three, wherein the method is as follows:

[0038] Step 1: Manufacture a cylindrical hollow tube mold 9. Along the axial direction of the hollow tube, symmetrically arrange several rigid columns 5 on the outer surface of the mold wall. Each rigid column 5 has several evenly distributed tethering rings 6 in the same direction, tightly embedded within the mold wall. Integrate the elastic matrix material with the rigid columns 5 on the outer surface of the cylindrical hollow tube mold 9. Demold the mold to obtain an elastic hollow tube 1 with built-in rigid columns 5. Figures 1-4 As shown;

[0039] Step Two: Based on the dimensions at both ends of the elastic hollow tube 1, design two plugs 3. Each plug 3 has a threaded hole in the middle, and one plug 3 has an inflation hole 10. Connect the two plugs 3 through the threaded holes using the same double-threaded hollow rod 2. Rigid columns 7 are symmetrically arranged on the surface of the threaded hollow rod 2, and rope loops 8 are evenly distributed on the surface of the rigid columns 7. Figures 5-8 As shown;

[0040] Step 3: Connect the tethering ring 6 on the rigid column 5 inside the elastic hollow tube 1 to the tethering rings 8 evenly distributed on the surface of the double-threaded hollow rod 2 using ropes 4 of equal length. This limits the maximum deformation of the inflatable airbag while maintaining the length of the elastic hollow tube 1. The maximum deformation is determined by the rope length. Figures 9-12 As shown;

[0041] Step 4: Connect both ends of the elastic hollow tube 1 to the plugs 3 and perform pressure-resistant and airtight treatment to obtain an inflatable airbag with controllable maximum deformation. The maximum deformation of this invention is 800%.

[0042] Specific Implementation Method 5: In the preparation method of the tubular inflatable airbag with controllable deformation described in Specific Implementation Method 4, in step one, the elastic matrix material is one of polyurethane, silicone rubber, natural rubber, tough epoxy resin, and nylon.

[0043] Specific Implementation Method Six: In the preparation method of the tubular inflatable airbag with controllable deformation as described in Specific Implementation Method Four, in step one, the integrated molding is one or a combination of solution coating, melt coating, mechanical stitching, and surface bonding.

[0044] Example 1:

[0045] A method for preparing a tubular inflatable airbag with controllable deformation, the method comprising:

[0046] Step 1: Manufacture a cylindrical hollow tube mold 9. Along the axial direction of the hollow tube, symmetrically arrange several rigid columns 5 on the outer surface of the mold wall. Among them, several rope rings 6 are evenly distributed in the same direction on the rigid columns 5, and the rope rings 6 are tightly embedded in the mold wall. Integrate the elastic matrix material with the rigid columns 5 on the outer surface of the cylindrical hollow tube mold 9, demold, and obtain the elastic hollow tube 1 with the built-in rigid columns 5. The elastic matrix material is polyurethane; the integrated molding is surface bonding.

[0047] Step 2: Based on the dimensions of both ends of the elastic hollow tube 1, design two plugs 3. Each plug 3 has a threaded hole in the middle, and one of the plugs 3 has an air inlet 10. Connect the two plugs 3 with the same double-threaded hollow rod 2 through the threaded hole. Rigid columns 2 7 are symmetrically arranged on the surface of the threaded hollow rod 2, and rope rings 2 8 are evenly arranged on the surface of the rigid columns 2 7. The rigid columns 1 5 and rigid columns 2 7 are metal columns.

[0048] Step 3: Connect the tethering ring 6 on the rigid column 5 inside the elastic hollow tube 1 to the tethering ring 8 evenly distributed on the surface of the double-threaded hollow rod 2 with ropes 4 of equal length, so as to limit the maximum deformation of the inflatable airbag while keeping the length of the elastic hollow tube 1 unchanged; the tethering ring 6 and the tethering ring 8 are set at the same height and angle.

[0049] Step 4: Connect both ends of the elastic hollow tube 1 to the plug 3 and perform pressure-resistant and airtight treatment to obtain an inflatable airbag with controllable maximum deformation. The overall diameter of the inflatable airbag is controlled between 0.5 and 4 mm.

[0050] like Figure 11As shown, the gray part is the elastic hollow tube of the inflatable airbag part of the present invention, and the black part is the elastic hollow tube that contacts the brain. This is the outermost elastic tube, which can be fixed with a grid plate to form a hollow channel. The specific preparation method of the outermost elastic hollow tube is as follows: manufacture a cylindrical hollow tube mold (9), arrange a certain number of rigid columns symmetrically on the surface of the mold tube along the axial direction of the hollow tube, form a film of elastic matrix material on the outer surface of the cylindrical hollow tube mold, demold, and obtain the outer elastic hollow tube with built-in rigid columns.

[0051] Example 2:

[0052] A method for preparing a tubular inflatable airbag with controllable deformation, the method comprising:

[0053] Step 1: Manufacture a cylindrical hollow tube mold 9. Along the axial direction of the hollow tube, symmetrically arrange several rigid columns 5 on the outer surface of the mold wall. Among them, several rope rings 6 are evenly distributed in the same direction on the rigid columns 5, and the rope rings 6 are tightly embedded in the mold wall. Integrate the elastic matrix material with the rigid columns 5 on the outer surface of the cylindrical hollow tube mold 9, demold, and obtain the elastic hollow tube 1 with the built-in rigid columns 5. The elastic matrix material is natural rubber; the integrated molding is a solution coating.

[0054] Step 2: Based on the dimensions of both ends of the elastic hollow tube 1, design two plugs 3. Each plug 3 has a threaded hole in the middle, and one of the plugs 3 has an air inlet 10. Connect the two plugs 3 with the same double-threaded hollow rod 2 through the threaded hole. Rigid columns 2 7 are symmetrically arranged on the surface of the threaded hollow rod 2, and rope rings 2 8 are evenly arranged on the surface of the rigid columns 2 7. The rigid columns 1 5 and rigid columns 2 7 are composite material columns.

[0055] Step 3: Connect the tethering ring 6 on the rigid column 5 inside the elastic hollow tube 1 to the tethering ring 8 evenly distributed on the surface of the double-threaded hollow rod 2 with ropes 4 of equal length, so as to limit the maximum deformation of the inflatable airbag while keeping the length of the elastic hollow tube 1 unchanged; the tethering ring 6 and the tethering ring 8 are set at the same height and angle.

[0056] Step 4: Connect both ends of the elastic hollow tube 1 to the plug 3 and perform pressure-resistant and airtight treatment to obtain an inflatable airbag with controllable maximum deformation. The overall diameter of the inflatable airbag is controlled between 2 and 6 mm.

Claims

1. A tubular inflatable airbag with controllable deformation, characterized in that: The airbag includes an elastic hollow tube (1), a threaded hollow tube (2), two plugs (3) and a rope (4); The inner wall of the elastic hollow tube (1) is provided with a number of rigid columns one (5) along the axial direction, and each rigid column one (5) is provided with a number of rope rings one (6). The outer wall of the threaded hollow tube (2) is provided with a number of rigid columns two (7) along the axial direction, and each rigid column two (7) is provided with a number of rope rings two (8). The elastic hollow tube (1) and the threaded hollow tube (2) are coaxially arranged, and the elastic hollow tube (1) is located outside the threaded hollow tube (2); the upper and lower ends of the elastic hollow tube (1) and the threaded hollow tube (2) are sealed and connected by plugs (3), one of the plugs (3) is provided with an air hole, and the first rope ring (6) and the second rope ring (8) are connected by a rope (4); The rigid column one (5) and rigid column two (7) are one of metal columns, plastic columns, and composite material columns; the rope ring one (6) and the rope ring two (8) are set at the same height and angle.

2. The method for preparing a tubular inflatable airbag with controllable deformation according to claim 1, characterized in that: Step 1: Manufacture a cylindrical hollow tube mold (9). Along the axial direction of the hollow tube, symmetrically arrange several rigid columns (5) on the outer surface of the mold wall. Among them, several rope rings (6) are evenly distributed in the same direction on the rigid columns (5). The rope rings (6) are tightly embedded in the mold wall. The elastic matrix material is integrally formed on the outer surface of the cylindrical hollow tube mold (9) with the rigid columns (5). Demolding yields an elastic hollow tube (1) with built-in rigid columns (5). Step 2: Design two plugs (3) based on the dimensions of both ends of the elastic hollow tube (1). The plugs (3) have threaded holes in the middle, and one of the plugs (3) has an air inlet (10). Connect the two plugs (3) with the same double-threaded hollow rod (2) through the threaded holes. Rigid columns (7) are symmetrically arranged on the surface of the threaded hollow rod (2), and rope rings (8) are evenly arranged on the surface of the rigid columns (7). Step 3: Use ropes (4) of equal length to connect the first rope ring (6) on the rigid column (5) inside the elastic hollow tube (1) to the second rope ring (8) evenly distributed on the surface of the double-threaded hollow rod (2), thereby limiting the maximum deformation of the inflatable airbag while keeping the length of the elastic hollow tube unchanged. Step 4: Connect both ends of the elastic hollow tube (1) to the plug (3) and perform pressure-resistant and airtight treatment to obtain an inflatable airbag with controllable maximum deformation.

3. The method for preparing a tubular inflatable airbag with controllable deformation according to claim 2, characterized in that: In step one, the elastic matrix material is one of polyurethane, silicone rubber, natural rubber, toughened epoxy resin, and nylon.

4. The method for preparing a tubular inflatable airbag with controllable deformation according to claim 2, characterized in that: In step one, the integrated molding is one or a combination of solution coating, melt coating, mechanical stitching, and surface bonding.

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