Medical energy guide wire

Abstract

A medical energy guide wire comprises a head end and a guide wire pushing rod, an energy discharge electrode assembly is axially arranged at the far end of the guide wire pushing rod, the guide wire pushing rod is of a cavity structure, the cavity structure forms a liquid inlet channel, the far end of the guide wire pushing rod is a hollow-out section of the guide wire pushing rod of a hollow-out structure, and a liquid inlet is formed in the near end of the guide wire pushing rod. The mode that the electrode ring and the guide wire are combined is adopted, a shock wave emission channel is established, a shock wave emission path of the energy guide wire takes the guide wire as the axis, shock waves of the energy guide wire form a passage capable of transmitting energy after liquid injection, energy is emitted to the periphery of the electrode, the caliber of a calcification narrow channel is expanded, calcification lesions are loosened, and the calcification effect is improved. The energy can cover a wider lesion area and act on the lesion area more evenly, local damage to the blood vessel wall is reduced, large-range calcification lesions can be treated more effectively, the strength and direction of shock waves can be better controlled in the operation process, the success rate of an operation is remarkably increased, and the operation time of the operation is shortened.

Description

Technical Field

[0001] This invention relates to a medical guidewire, specifically a medical energy guidewire, belonging to the field of medical device technology. Background Technology

[0002] Interventional procedures for chronic total coronary artery occlusion (CTO) are complex and time-consuming. Guidewires, balloons, and stents are considered the three pillars of CTO interventional treatment. Among them, the guidewire, though seemingly small, is crucial for surgical success due to its accurate selection. Currently, the Soundbite oscillating wave guidewire system is commonly used in CTO interventional treatment. This system consists of a SoundBite oscillating wave system console and a guidewire. The guidewire is coated with PTFE (polytetrafluoroethylene) and has a total length of 300 cm. The distal 1 mm tip of the guidewire is the working segment for the oscillating wave and is marked with platinum. When the console is activated, the guidewire releases oscillating waves, creating high-amplitude pressure pulses that rapidly advance within the vessel. These high-intensity vibrations effectively fragment calcified plaques or create tiny fissures, thus helping the guidewire pass through the occlusion site. However, although high-intensity vibration can act on calcified plaques and create channels in narrowed or occluded areas, the energy transfer efficiency within the vessel wall and plaque is limited, especially for deeply calcified or tightly adhered plaques, where the effect is less than ideal. Even with a channel diameter similar to the guidewire's outer diameter, problems such as luminal stenosis and difficulty in inserting instruments persist. Clinically, many challenges remain, including long treatment times and low success rates. Summary of the Invention

[0003] To address the above problems, this invention designs a medical energy guidewire, the technical solution of which is as follows: A medical energy guidewire comprises, from distal to proximal, a tip and a guidewire push rod. The distal end of the guidewire push rod is axially provided with an energy-releasing electrode assembly. The guidewire push rod has a hollow structure, which forms a liquid inlet channel. The distal end of the guidewire push rod is a hollow section with a hollow structure. The proximal end of the guidewire push rod is provided with a liquid inlet communicating with the liquid inlet channel.

[0004] Optionally, the head end is provided with a developing elastic component.

[0005] Optionally, the guidewire pusher has a segmented structure, consisting of, from far to near, a hollow section, a spirally cut section with gradually varying pitch, a diameter-changing section, and a circular tube section. The hollow design of the hollow section is primarily intended to make the distal end of the guidewire pusher, near the tip, more flexible.

[0006] Optionally, the energy-discharging electrode assembly includes a front electrode ring, a front electrode wire, a rear electrode ring, and a rear electrode wire, with the front electrode ring and the rear electrode ring respectively disposed at both ends of the hollow section of the guide wire push rod.

[0007] Optionally, the front electrode wire is connected to the front electrode ring, and the front electrode wire is disposed in the hollow section of the guide wire push rod, the pitch-gradient spiral-cut section of the guide wire push rod, the diameter-changing section of the guide wire push rod, and the inner cavity of the circular tube section of the guide wire push rod; the rear electrode wire is connected to the rear electrode ring, and the rear electrode wire is disposed in the pitch-gradient spiral-cut section of the guide wire push rod, the diameter-changing section of the guide wire push rod, and the inner cavity of the circular tube section of the guide wire push rod.

[0008] Optionally, the outer surfaces of the head end, the hollow section of the guide wire push rod, the spirally cut section with gradually varying pitch of the guide wire push rod, and the variable diameter section of the guide wire push rod are covered with polymer sheaths.

[0009] Optionally, an insulating coating is provided between the outer surface of the hollow section of the guide wire push rod, the spirally cut section with gradually varying pitch of the guide wire push rod, and the variable diameter section of the guide wire push rod and the polymer sheath.

[0010] Compared with existing technologies, its beneficial effects are as follows: The energy guidewire of this invention uses an electrode ring combined with the guidewire to establish a shock wave emission channel. The path of the shock wave emitted by the energy guidewire is centered on the guidewire. The shock wave passes through the energy-transmitting pathway formed after fluid injection and emits energy to the surrounding area of ​​the electrode, loosening the calcified lesion. This allows the energy to cover a wider lesion area and act more evenly on the lesion area, reducing local damage to the blood vessel wall. It can more effectively treat larger calcified lesions, expand the diameter of calcified stenosis channels, simplify interventional treatment procedures, or create more favorable conditions for subsequent treatment steps (such as balloon dilation, stent placement, etc.), reduce treatment difficulty and complication risks, and better control the intensity and direction of the shock wave during operation, avoiding accidental damage to non-lesion areas, improving treatment safety, making the treatment process more controllable, significantly improving the success rate of the operation, and shortening the operation time. Attached Figure Description

[0011] Figure 1 This is a structural diagram of a medical energy guidewire. Figure 2 This is a structural diagram of a guidewire pusher for a medical energy guidewire; Figure 3 This is a cross-sectional view of a medical energy guidewire. Figure 4 A magnified view of the distal end of a medical energy guidewire; Figure 5This is a cross-sectional view at point I in the overall structural diagram of a medical energy guidewire; Figure 6 This is a cross-sectional view at point II in the overall structural diagram of a medical energy guidewire; In the diagram: 1. Developing elastic component, 2. Energy-releasing electrode assembly, 3. Guide wire pusher, 4. Insulating coating, 5. Polymer sheath, 6. Insertion mark point, 7. Circular tube section of guide wire pusher, 8. Variable diameter section of guide wire pusher, 9. Gradual pitch spiral cutting section of guide wire pusher, 10. Hollow section of guide wire pusher, 11. Fixed position of energy-releasing electrode assembly of guide wire pusher, 12. Front electrode ring, 13. Front electrode wire, 14. Connection point of front electrode wire, 15. Liquid inlet channel, 16. Rear electrode ring, 17. Rear electrode wire, 18. Guide wire interface of energy-releasing electrode assembly. Detailed Implementation

[0012] To enable those skilled in the art to better understand the technical solution of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0013] To avoid ambiguity, the orientation is defined as follows: the end of the guidewire device that is closer to the operator is the proximal end, and the end that is farther away from the operator is the distal end. Example

[0014] See Figures 1-6 A medical energy guidewire includes a radiopaque elastic component 1, an energy-discharging electrode component 2, a guidewire push rod 3, an insulating coating 4, and a polymer sheath 5. Example

[0015] like Figure 1 As shown, a distal design of a medical energy guidewire is described. Specifically, the guidewire tip is connected to a radiopaque elastic component 1 and an energy-discharging electrode component 2. The energy-discharging electrode component 2 is connected to a guidewire push rod 3. The distal end of the guidewire is coated with an insulating coating 4 and a polymer sheath 5, forming a closed structure at the distal end of the guidewire. Specifically, the insulating coating 4 can be an organic or inorganic insulating coating, such as a PI coating; the polymer sheath 5 can be a conventional polymer sheath for guidewires. Example

[0016] like Figure 2 As shown, this is the overall structure of the guidewire push rod 3. The guidewire push rod 3 is a hollow alloy tube, preferably made of stainless steel alloy. The guidewire push rod 3 adopts a segmented design to achieve flexibility at the distal end of the guidewire while maintaining its excellent support. Specifically, starting from the proximal end, it consists of the following segments in sequence: the circular tube segment 7, the diameter-changing segment 8, the pitch-gradient spiral-cut segment 9, and the hollow segment 10. Example

[0017] like Figure 3 and Figure 4 The figure shown is an overall cross-sectional view and an enlarged view of a medical energy guidewire of the present invention. The distal radiopaque elastic component 1 is connected to the front electrode 12 in the energy-releasing electrode component 2. The front electrode 12 and the rear electrode 16 are set at both ends of the hollow section 10 of the guidewire push rod. Specifically, the front electrode 12 is provided with a connection point 14 between the front electrode and the front electrode line, and the rear electrode 16 is also provided with a connection point 18 between the rear electrode and the rear electrode line. The front electrode line 13 and the rear electrode line 17 are both located in the liquid inlet channel 15 of the guidewire push rod 3. Example

[0018] like Figure 1 and Figure 5 As shown, this is a medical energy guidewire of the present invention. Figure 1 Cross-sectional view at position I. The outermost layer is a polymer sheath 5, and the inner layer is an insulating coating 4. The insulating coating 4 is applied to the surface of the tapered helical section 9 of the guide wire push rod to prevent conductivity at the proximal end of the guide wire during operation. Figure 5 It can also be seen that the two electrode wires, the front electrode wire 13 and the rear electrode wire 17, are located in the liquid inlet channel 15 of the guide wire push rod 3. Example

[0019] like Figure 1 and Figure 6 As shown, this is a medical energy guidewire of the present invention. Figure 1 Cross-sectional view at position II. The hollow section 10 of the guidewire push rod is permeable; the gap between the outermost polymer sheath 5 and the hollow section 10 of the guidewire push rod and the internal cavity of the hollow section 10 of the guidewire push rod are liquid inlet channels 15. The internal cavity of the hollow section 10 of the guidewire push rod is also a liquid inlet channel 15. After the front electrode wire 13 and the front electrode 12 are connected at the connection point 14 between the front electrode and the front electrode wire, they pass through the liquid inlet channel 15 to the proximal end. Example

[0020] like Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this invention discloses a medical energy guidewire: by designing and connecting an energy-releasing electrode assembly 2 at the distal end of the guidewire push rod 3, the guidewire energy is released. The specific working principle is as follows: after injecting liquid into the inlet channel 15 of the guidewire push rod 3, the front electrode wire 13 and the rear electrode wire 17 of the guidewire are connected to the energy generator to release energy from the guidewire, thereby achieving the effect of breaking up lesion plaque thrombi. Through a multi-hole handle, the front electrode wire 13 and the rear electrode wire 17 extend from one interface and connect to a socket, which is then connected to the energy control console. The other interface connects to the push rod as the inlet channel. Example

[0021] The present invention discloses a medical energy guidewire. The working process is as follows: When in use, the proximal end of the guidewire push rod 3 is provided with two channels, namely the electrode wire port and the liquid inlet port. Liquid is injected from the liquid inlet port into the liquid inlet channel 15 of the guidewire push rod 3 until the inner cavity is filled. After connecting the front electrode wire 13 and the rear electrode wire 17 at the electrode wire port to the plug, the energy generator is connected to control the energy release effect of the energy guidewire.

[0022] Those skilled in the art should recognize that the above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. Any variations or modifications to the above embodiments that are within the spirit and essence of the present invention will fall within the scope of the claims of the present invention.

Claims

1. A medical energy guidewire, comprising, from distal to proximal, a tip and a guidewire pusher (3), characterized in that, The distal end of the guide wire push rod (3) is provided with an energy-releasing electrode assembly (2). The guide wire push rod (3) has a cavity structure, which forms a liquid inlet channel (15). The distal end of the guide wire push rod (3) is a hollow section (10) of the guide wire push rod with a hollow structure. The proximal end of the guide wire push rod (3) is provided with a liquid inlet that connects to the liquid inlet channel (15).

2. The medical energy guidewire according to claim 1, characterized in that, The head end is provided with a developing elastic component (1).

3. The medical energy guidewire according to claim 1, characterized in that, The guide wire push rod (3) has a segmented structure, consisting of a hollow section (10), a spiral cutting section with gradually changing pitch (9), a diameter-changing section (8), and a round tube section (7) from far to near.

4. A medical energy guidewire according to claim 3, characterized in that, The energy-releasing electrode assembly (2) includes a front electrode ring (12), a front electrode wire (13), a rear electrode ring (16) and a rear electrode wire (17). The front electrode ring (12) and the rear electrode ring (16) are respectively disposed at both ends of the hollow section (10) of the guide wire push rod.

5. A medical energy guidewire according to claim 4, characterized in that, The front electrode wire (13) is connected to the front electrode ring (12), and the front electrode wire (13) is disposed in the inner cavity of the hollow section (10) of the guide wire push rod, the pitch-gradient spiral cutting section (9) of the guide wire push rod, the diameter-changing section (8) of the guide wire push rod, and the round tube section (7) of the guide wire push rod; the rear electrode wire (17) is connected to the rear electrode ring (16), and the rear electrode wire (17) is disposed in the inner cavity of the pitch-gradient spiral cutting section (9) of the guide wire push rod, the diameter-changing section (8) of the guide wire push rod, and the round tube section (7) of the guide wire push rod.

6. A medical energy guidewire according to claim 3, characterized in that, The outer surfaces of the head end, the hollow section (10) of the guide wire push rod, the spiral cutting section (9) of the guide wire push rod with gradually changing pitch, and the diameter-changing section (8) of the guide wire push rod are covered with polymer sheaths (5).

7. A medical energy guidewire according to claim 6, characterized in that, An insulating coating (4) is also provided between the outer surface of the hollow section (10) of the guide wire push rod, the spiral cutting section (9) of the guide wire push rod with gradually changing pitch, and the diameter-changing section (8) of the guide wire push rod and the polymer sheath (5).

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