A CTO pre-lesion forward blood vessel opening device that can be quickly exchanged

Abstract

The utility model provides a can fast exchange's CTO pathological change forward blood vessel unblocker, including pressure pump structure, pressure pump structure right end is pusher structure, pusher structure's right end is fast exchange structure, the inside of pusher structure and fast exchange structure is hollow, be equipped with the lateral hole of letting the guide wire pass on fast exchange structure, the guide wire passes through lateral hole and is penetrated in the inside of fast exchange structure, pusher structure surface is provided with the extension end, the surface of extension end is equipped with conducting element, and conducting element and extension end are integrated into an integrity, conducting element connects high frequency source generator's negative pole, the tail end of guide wire connects high frequency electrotome's positive pole, high frequency electrotome is connected with high frequency power generator, and the guide wire and conducting element form a complete loop through high frequency electrotome's positive pole and high frequency power generator's negative pole. The utility model discloses simple structure, low in cost, and the penetrating effect is remarkable, can easily pass through pathological occlusion position, and the popularization to medical science and technology has important significance.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a rapidly exchangeable forward vascular recanalizer for CTO lesions. Background Technology

[0002] Chronic coronary artery occlusion (CTO) is a special type of coronary artery disease. Interventional procedures for coronary artery occlusion are very complex, especially when the occlusion site is combined with calcification, making management extremely challenging. A major reason for surgical failure is when the guidewire passes through the occlusion site but subsequent instruments cannot. Clinically, the means to treat this type of lesion are very limited. Only by using laser instruments to ablate the lesion site can the procedure potentially succeed. However, laser instruments are very expensive in China, and only a very few hospitals possess such equipment. Therefore, developing a simple, easy-to-use, low-cost, and rapidly exchangeable forward vascular opener for CTO lesions is essential to overcoming the shortcomings of existing technologies.

[0003] Chinese utility model patent application number CN202322160705.7 discloses a pre-shaped microcatheter, which relates to the field of medical device technology, specifically a pre-shaped microcatheter. This utility model uses a pre-shaped cylindrical tube to deliver the pre-shaped microcatheter to the angulated coronary artery (CTO) lesion, allowing the tube to rest obliquely against the coronary vessel wall. A support tube 2 provides additional support to the coronary vessel wall, and the opening of the pre-shaped cylindrical tube is aligned with the opening of the CTO lesion. This microcatheter provides a good puncture angle and additional external wall support for antegrade CTO guidewire puncture, thus improving the success rate of CTO guidewire puncture. However, when encountering occlusion combined with calcification, this utility model remains very difficult to handle, and the success rate is not high, failing to address the aforementioned technical shortcomings.

[0004] Chinese utility model patent application number CN202210225996.0 discloses a supporting device for interventional surgery in patients with coronary artery occlusion. This utility model relates to the field of medical device technology, specifically a supporting device for interventional surgery in patients with coronary artery occlusion. This utility model utilizes the accompanying vein to achieve normal blood flow. A guidewire guides a balloon catheter into the occluded artery. The balloon in the catheter expands, temporarily sealing the artery. Then, the distal end of the guidewire is punctured from the artery to the accompanying vein, using the vein to replace the occluded artery and achieve normal blood delivery. However, this utility model is not applicable to cases where the occlusion is combined with calcification, and the success rate is not high, failing to overcome the aforementioned technical shortcomings. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a rapidly exchangeable forward vascular recanalizer for CTO lesions, which has advantages such as improved puncture and surgical success rates. It solves the problem that coronary artery occlusions often present multiple angles and high rigidity, and ordinary microcatheters cannot provide a good angle and strong support for CTO guidewire puncture, which not only takes a long time but also increases surgical risks and radiation exposure time for doctors and patients.

[0006] To address this, a rapidly exchangeable forward vascular recanalizer for CTO lesions is proposed, comprising a pressure pump structure, a push rod structure at the right end of the pressure pump structure, and a rapid exchange structure at the right end of the push rod structure. Both the push rod structure and the rapid exchange structure are hollow. The rapid exchange structure has a side hole for a guidewire to pass through. The guidewire passes through the side hole and penetrates the interior of the rapid exchange structure. An extension end is provided on the surface of the push rod structure, and a conductive element is integrated with the extension end. The conductive element is connected to the negative terminal of a high-frequency source generator. The tail end of the guidewire is connected to the positive terminal of a high-frequency electrosurgical unit. The high-frequency electrosurgical unit is connected to a high-frequency power generator. The guidewire and the conductive element form a complete circuit through the positive terminal of the high-frequency electrosurgical unit and the negative terminal of the high-frequency power generator. At this point, the guidewire passes through the stenotic lesion under the action of a high-frequency current.

[0007] The advantages are as follows: the pressure pump structure, push rod structure, and rapid exchange structure combined constitute the necessary basic structure of this utility model, and are also an important foundation for the significant technical breakthrough of this utility model. An extension end is provided on the surface of the push rod structure, and a conductive element is provided on the extension end. This arrangement facilitates connection to the negative terminal of the high-frequency power source generator. The integrated conductive element and extension end provide better connection stability. The tail end of the guidewire is connected to the positive terminal of the high-frequency electrosurgical unit, which is in turn connected to the high-frequency power generator. At this time, the positive terminal of the guidewire and the negative terminal of the conductive element form a complete circuit through the high-frequency power generator. After the high-frequency power generator is activated, the guidewire has high penetration ability and can easily pass through the blocked lesion, thereby greatly reducing the difficulty of the operation, reducing the operation time, and improving the patient's surgical success rate, representing a significant breakthrough over existing technologies.

[0008] A further improvement is that the pressure pump structure includes a three-way three-port, one end of which is provided with a pressure pump port, and the three-way three-port and the pressure pump port are integrated into one unit.

[0009] The advantages are: the pressure pump port can deliver liquids or gases, and the three-way connector can connect multiple pipes to allow liquids or gases to pass through, controlling the flow rate of liquids or gases between each pipe. The three-way connector can also selectively divert liquids or gases into different pipes.

[0010] A further improvement is that a push rod structure is provided at the other end of the three-way three-port, and the push rod structure is hollow inside.

[0011] The advantages are: the push rod structure allows for quick replacement of guide wires or balloons without the need for an assistant, making operation simple and requiring lower control precision.

[0012] A further improvement is that the quick-exchange structure includes an outer rod distal end disposed at the other end of the push rod structure. The surface of the outer rod distal end is provided with a side hole for the guide wire to pass through. A hollow guide wire cavity is formed inside the outer rod distal end to allow the guide wire to pass through. The guide wire cavity is used to guide the guide wire and allow it to pass through the interior of the outer rod distal end.

[0013] The benefits are: the outer rod has a side hole on its distal end surface that allows the guide wire to pass through, which facilitates quick guide wire replacement, and the guide wire cavity inside the distal end of the outer rod allows the guide wire to move more smoothly.

[0014] A further improvement is that the rapid exchange structure also includes a balloon, which is located at the other end of the outer rod, and the interior of the balloon forms a hollow chamber for the guidewire to pass through.

[0015] The effect is that the balloon provides flexible dilation and support to the blood vessels, and the guidewire needs to work in conjunction with the balloon when penetrating the blocked lesion. Balloon dilation and guidewire opening are important strategies for performing the surgery.

[0016] A further improvement is that the other end of the balloon is a pointed portion, and the interior of the pointed portion has a hollow chamber for the guidewire to pass through.

[0017] The effect is that the tip restricts the circumferential movement of the guidewire, allowing for better control and precise penetration of the guidewire into the lesion blockage site.

[0018] A further improvement is that the guidewire passes through a side hole on the distal surface of the outer rod and extends through the interior of the distal end of the outer rod, the balloon, and the tip portion.

[0019] The effect is that the guidewire passes through the distal end of the outer rod, the balloon, and the interior of the tip, facilitating actual operation during surgery.

[0020] A further improvement is that the conductive element is a metal electrode sheet.

[0021] The benefits are: the metal electrode sheets have better conductivity and a longer service life.

[0022] A further improvement is that the high-frequency electrosurgical unit has an autonomous selectable switch mode, which selectively activates the high-frequency electrosurgical unit according to the ease with which the guidewire passes through the stenotic lesion, thereby allowing the forward vascular recanalizer to pass through the stenotic lesion.

[0023] The advantage is that the switchable high-frequency electrosurgical unit can independently control whether the guide wire is connected to high-frequency current, making it more convenient in practical use. Beneficial effects

[0024] This invention connects the tail end of a guidewire to the positive terminal of a high-frequency electrosurgical unit, which is then connected to a high-frequency power generator. An extension end with a metal electrode plate is mounted on the push rod structure, connected to the negative terminal of the high-frequency electrosurgical unit, thus forming a complete circuit. This significantly enhances the guidewire's penetrating power. When the guidewire passes through the narrowed lesion again, the high-frequency current allows it to easily pass through the lesion, completing the surgery. This invention features a simple structure, low cost, and significant effectiveness. It can easily penetrate the occluded areas of calcified lesions, making it crucial for time-sensitive emergency surgeries and significantly contributing to the popularization of medical technology. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 It is a sectional view along line A-A; In the diagram, 1 is the pressure pump structure, 2 is the push rod structure, 3 is the quick exchange structure, 4 is the side hole, 5 is the extension end, 6 is the high-frequency electrosurgical unit, 7 is the conductive element, 8 is the high-frequency power generator, 9 is the three-way three-way port, 10 is the pressure pump port, 11 is the distal end of the outer rod, 12 is the guidewire cavity, 13 is the balloon, 14 is the tip part, and 15 is the guidewire. Detailed Implementation

[0026] The following is in conjunction with the instruction manual. Figures 1 to 2 The specific embodiments of this utility model will be further described to make the technical solution and its beneficial effects clearer and more explicit.

[0027] Therefore, this utility model provides a rapidly exchangeable forward vascular recanalizer for CTO lesions, including a pressure pump structure 1, a push rod structure 2 at the right end of the pressure pump structure 1, and a rapid exchange structure 3 at the right end of the push rod structure 2. The push rod structure 2 and the rapid exchange structure 3 are hollow inside. The rapid exchange structure 3 is provided with a side hole 4 for a guide wire 15 to pass through. The guide wire 15 passes through the side hole 4 and penetrates the interior of the rapid exchange structure 3. An extension end 5 is provided on the surface of the push rod structure 2. A conductive element 7 is provided on the surface of the extension end 5, and the conductive element 7 is integrated with the extension end 5. The conductive element 7 is connected to the negative terminal of a high-frequency source generator 8. The tail end of the guide wire 15 is connected to the positive terminal of a high-frequency electrosurgical unit 6. The high-frequency electrosurgical unit 6 is connected to the high-frequency power generator 8. The guide wire 15 and the conductive element 7 form a complete circuit through the positive terminal of the high-frequency electrosurgical unit 6 and the negative terminal of the high-frequency power generator 8. At this time, the guide wire 15 passes through the stenotic lesion under the action of high-frequency current.

[0028] The pressure pump structure 1 includes a three-way three-port 9, one end of which is provided with a pressure pump port 10, and the three-way three-port 9 and the pressure pump port 10 are integrated into one unit.

[0029] The other end of the three-way three-port 9 is provided with a push rod structure 2, and the push rod structure 2 is hollow inside.

[0030] The quick-exchange structure 3 includes an outer rod distal end 11 disposed at the other end of the push rod structure 2. The surface of the outer rod distal end 11 is provided with a side hole 4 for the guide wire 15 to pass through. A hollow guide wire cavity 12 is formed inside the outer rod distal end 11 to allow the guide wire 15 to pass through. The guide wire cavity 12 is used to guide the guide wire 15 and allow it to pass through the interior of the outer rod distal end 11.

[0031] The rapid exchange structure 3 also includes a balloon 13, which is located at the other end of the distal end 11 of the outer rod. The balloon 13 has a hollow chamber inside that allows the guide wire 15 to pass through.

[0032] The other end of the balloon 13 is a tip portion 14, and the interior of the tip portion 14 forms a hollow chamber through which the guide wire 15 passes.

[0033] The guide wire 15 passes through the side hole 4 on the surface of the distal end 11 of the outer rod and extends through the interior of the distal end 11 of the outer rod, the balloon 13, and the tip portion 14.

[0034] The conductive element 7 is a metal electrode sheet.

[0035] The high-frequency electrosurgical unit 6 is in an autonomous switching mode. It selectively activates the high-frequency electrosurgical unit 6 according to the ease with which the guide wire 15 passes through the stenotic lesion, thereby allowing the forward vascular recanalizer to pass through the stenotic lesion.

Claims

1. A rapidly exchangeable forward vascular recanalizer for CTO lesions, comprising a pressure pump structure (1), wherein the right end of the pressure pump structure (1) is a push rod structure (2), and the right end of the push rod structure (2) is a rapid exchange structure (3), wherein the interiors of the push rod structure (2) and the rapid exchange structure (3) are hollow, and the rapid exchange structure (3) is provided with a side hole (4) for a guidewire (15) to pass through, wherein the guidewire (15) passes through the side hole (4) and penetrates the interior of the rapid exchange structure (3), characterized in that: The push rod structure (2) has an extension end (5) on its surface. The extension end (5) has a conductive element (7) on its surface, and the conductive element (7) is integrated with the extension end (5). The conductive element (7) is connected to the negative terminal of the high-frequency source generator (8). The tail end of the guide wire (15) is connected to the positive terminal of the high-frequency electrosurgical unit (6). The high-frequency electrosurgical unit (6) is connected to the high-frequency power generator (8). The guide wire (15) and the conductive element (7) form a complete circuit through the positive terminal of the high-frequency electrosurgical unit (6) and the negative terminal of the high-frequency power generator (8). At this time, the guide wire (15) passes through the narrow lesion under the action of high-frequency current.

2. The rapid-exchange CTO lesion forward vascular recanalizer according to claim 1, characterized in that: The pressure pump structure (1) includes a three-way three-way port (9), one end of which is provided with a pressure pump port (10), and the three-way three-way port (9) and the pressure pump port (10) are integrated into one unit.

3. The rapid-exchange CTO lesion forward vascular recanalizer according to claim 2, characterized in that: The other end of the three-way three-way port (9) is provided with a push rod structure (2), and the push rod structure (2) is hollow inside.

4. The rapid-exchange forward vascular recanalizer for CTO lesions according to claim 1, characterized in that: The quick-exchange structure (3) includes an outer rod distal end (11) disposed at the other end of the push rod structure (2). The surface of the outer rod distal end (11) is provided with a side hole (4) through which the guide wire (15) passes. A hollow guide wire cavity (12) is formed inside the outer rod distal end (11) to allow the guide wire (15) to pass through. The guide wire cavity (12) is used to guide the guide wire (15) and allow it to pass through the interior of the outer rod distal end (11).

5. The rapid-exchange CTO lesion forward vascular recanalizer according to claim 4, characterized in that: The rapid exchange structure (3) also includes a balloon (13), which is located at the other end of the distal end (11) of the outer rod, and the interior of the balloon (13) forms a hollow chamber through which the guide wire (15) passes.

6. The rapid-exchange forward vascular recanalizer for CTO lesions according to claim 5, characterized in that: The other end of the balloon (13) is a tip portion (14), and the interior of the tip portion (14) forms a hollow chamber through which the guide wire (15) passes.

7. The rapid-exchange forward vascular recanalizer for CTO lesions according to claim 6, characterized in that: The guidewire (15) passes through the side hole (4) on the surface of the distal end (11) of the outer rod and extends through the interior of the distal end (11) of the outer rod, the balloon (13), and the tip portion (14).

8. The rapid-exchange forward vascular recanalizer for CTO lesions according to claim 1, characterized in that: The conductive element (7) is a metal electrode sheet.

9. The rapid-exchange forward vascular recanalizer for CTO lesions according to claim 1, characterized in that: The high-frequency electrosurgical unit (6) is in an autonomous switching mode. It selectively activates the high-frequency electrosurgical unit (6) according to the ease with which the guide wire (15) passes through the stenotic lesion, thereby allowing the forward vascular recanalizer to pass through the stenotic lesion.

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