Laser ablation device for arteriosclerosis occlusion

Abstract

The utility model relates to the technical field of medical instruments, in particular to a laser ablation device for arteriosclerosis occlusion, which comprises a connector part, an adjusting part and an ablation part, the tail end of the connector part is provided with a bayonet socket for installation, a first optical fiber channel is arranged in the connector part in a penetrating manner, and the adjusting part comprises a piston cylinder body, a piston and a hollow threaded rod. A rotating mechanism is arranged on the side, close to the connector part, of the piston cylinder body, the hollow threaded rod is slidably arranged in the piston cylinder body and is in threaded connection with the rotating mechanism, a piston is arranged at the tail end of the hollow threaded rod, and a second optical fiber channel is formed in the hollow threaded rod; the ablation part comprises a catheter sheath, a guide wire channel, a normal saline channel and a third optical fiber channel, the guide wire channel, the normal saline channel and the third optical fiber channel are arranged on the catheter sheath, a balloon is arranged at the tail end of the normal saline channel, and the third optical fiber channel sequentially penetrates through the second optical fiber channel and the first optical fiber channel. Non-invasive treatment can be achieved through the light energy technology, and the surgical risk and the occurrence rate of postoperative complications are reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and specifically to a laser ablation device for arteriosclerosis occlusion. Background Technology

[0002] Peripheral arteriosclerosis obliterans (ASO) is a chronic progressive disease caused by thickening of the intima, narrowing or occlusion of the lumen of the arteries supplying the lower limbs due to arteriosclerosis. This results in insufficient blood supply to the affected limbs, causing intermittent claudication, pain, and even ulceration or necrosis. It is often a manifestation of systemic arteriosclerosis in the arteries of the lower limbs.

[0003] Regarding the distribution of arteries affected by ASO, the aortoiliac artery is involved in approximately 30% of cases, and the superficial femoral artery (SFA) is involved in 80% of lesions. The femoropopliteal artery is affected in as many as 80%–90% of cases. The tibiofibular artery is involved in 40%–50% of cases. Because the symptoms of ASO are often not obvious, the disease is easily missed and undertreated. Most patients present with chronic total occlusion (CTO) accompanied by severe limb ischemia (CLI) and gangrene.

[0004] Traditional treatments include stent implantation and balloon angioplasty, but these methods may have problems such as high recurrence rates and damage to blood vessels. Utility Model Content

[0005] This invention addresses the problems of existing technologies by providing a laser ablation device for arteriosclerosis occlusion.

[0006] The objective of this invention can be achieved through the following technical solution: a laser ablation device for arteriosclerosis occlusion, comprising:

[0007] The connector portion has a plug socket for installation at its end and a first optical fiber channel that runs through it.

[0008] The adjustment unit includes a piston cylinder, a piston, and a hollow threaded rod. A rotating mechanism is provided on the side of the piston cylinder near the connector. The hollow threaded rod is slidably disposed in the piston cylinder and threadedly connected to the rotating mechanism. The piston is provided at the end of the hollow threaded rod and a second optical fiber channel is provided inside it.

[0009] The ablation section includes a catheter sheath and a guidewire channel, a saline channel, and a third optical fiber channel disposed in the catheter sheath. A balloon is disposed at the end of the saline channel, and the third optical fiber channel is sequentially connected to the second optical fiber channel and the first optical fiber channel.

[0010] In a further improvement, the balloon includes a first cavity communicating with the saline channel and a second cavity communicating with the first cavity, the second cavity having an arc-shaped cross-section.

[0011] As a further improvement, the second cavity is provided in two sets, with the two sets of the second cavity symmetrically arranged on both sides of the first cavity.

[0012] As a further improvement, the piston cylinder is made of transparent material and has a scale on the outside.

[0013] In a further improvement, the rotating mechanism includes a rotating base mounted on the piston cylinder and a rotating adjusting plate rotatably mounted on the rotating base, the rotating adjusting plate being threadedly connected to the outer side of the hollow threaded rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Non-invasive treatment: Compared with traditional surgery, the photoelectric technology used in this invention can achieve non-invasive treatment, reducing surgical risks and the incidence of postoperative complications.

[0016] 2. Improve treatment efficacy: Multi-wavelength light energy can regulate the intravascular environment, promote the self-healing ability of the aortic wall, improve hemodynamics, and reduce the risk of aortic dissection progression.

[0017] 3. Wide applicability: This technology can be used for elderly patients or patients with other surgical contraindications, broadening the treatment population and avoiding situations where patients abandon treatment due to surgical risks.

[0018] 4. Treatment efficacy monitoring: Photonic technology allows for real-time monitoring of treatment effectiveness, providing a basis for adjusting subsequent treatment plans and improving the individualization of treatment.

[0019] 5. Cost-effectiveness: Compared to traditional surgery and long-term drug treatment, this technology may reduce medical costs and alleviate the financial burden on patients in the long run. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the balloon closure in Embodiment 1 of this utility model;

[0022] Figure 3 This is a schematic diagram of the balloon structure when it is opened according to Embodiment 1 of this utility model;

[0023] Figure 4 This is a schematic diagram of the balloon closure in Embodiment 2 of this utility model;

[0024] Figure 5 This is a schematic diagram of the balloon structure when it is opened according to Embodiment 2 of this utility model;

[0025] Figure 6 This is a schematic diagram of the structure of the adjustment part of this utility model.

[0026] In the figure, 1 is the connector; 11 is the first optical fiber channel; 2 is the adjustment section; 21 is the piston cylinder; 211 is the rotating mechanism; 2111 is the rotating base; 2112 is the rotating adjustment plate; 22 is the piston; 23 is the hollow threaded rod; 3 is the ablation section; 31 is the catheter sheath; 311 is the guidewire channel; 312 is the saline channel; 313 is the third optical fiber channel; 32 is the balloon; 321 is the first cavity; 322 is the second cavity; 4 is the blood vessel wall; 41 is the lesion; and 5 is the optical fiber. Detailed Implementation

[0027] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The following is a description of the embodiments and appendices. Figures 1-6 The technical solution of this utility model will be further described below.

[0030] Example 1

[0031] A laser ablation device for arteriosclerosis occlusion includes:

[0032] The connector 1 has a plug socket for installation at its end and a first optical fiber channel 11 that runs through it.

[0033] Adjustment part 2, the adjustment part 2 includes piston cylinder 21, piston 22 and hollow threaded rod 23. The piston cylinder 21 is provided with a rotating mechanism 211 on the side near the connector part 1. The hollow threaded rod 23 is slidably disposed in the piston cylinder 21 and is threadedly connected to the rotating mechanism 211. The piston 22 is provided at the end of the hollow threaded rod 23 and a second optical fiber channel is provided inside it.

[0034] The ablation section 3 includes a catheter sheath 31 and a guidewire channel 311, a saline channel 312 and a third optical fiber channel 313 disposed in the catheter sheath 31. A balloon 32 is disposed at the end of the saline channel 312. The third optical fiber channel 313 is sequentially connected to the second optical fiber channel 233 and the first optical fiber channel 11.

[0035] like Figures 1-3 As shown, in actual use, the femoral artery is punctured at the groin, and a 5-10 Fr. catheter sheath 31 is inserted. Under X-ray fluoroscopy, the guidewire is inserted into the intimal tear site of the aortic dissection aneurysm 11 through the guidewire channel 311. Next, using catheter and guidewire exchange technology, a pigtail angiography catheter is advanced along the guidewire for aortic angiography. Combined with MRI and CT aortic imaging, based on the imaging, the balloon 32 is delivered to the vascular lesion site 41, i.e., the arterial wall where the intimal tear is located. X-ray fluoroscopy is used to monitor the catheter depth. Then, the optical fiber 5 is moved to the first optical fiber channel 11, the second optical fiber channel 233, and the third optical fiber channel 313. The lesion 41, fiber optic 5, and piston 22 are fixedly connected. After the balloon 32 and fiber optic 5 are in place, saline is injected into the balloon 32 through the saline channel 312, causing the balloon 32 to expand and adhere to the inner wall of the blood vessel 4. This compresses the fiber optic 5, causing it to bend and adhere tightly to the lesion 41. The expanded balloon 32 does not obstruct blood flow in the artery and can block the intimal rupture, thus blocking blood flow through the rupture and buying time for further treatment. Laser energy is conducted to the lesion 41 through the fiber optic 5 and then released to the lesion 41 of the blood vessel 4 for ablation. By controlling the output power and action time of the laser, the depth and range of ablation can be precisely controlled to achieve the desired therapeutic effect.

[0036] This utility model has the following advantages:

[0037] 1. Non-invasive treatment: Compared with traditional surgery, the photoelectric technology used in this invention can achieve non-invasive treatment, reducing surgical risks and the incidence of postoperative complications.

[0038] 2. Improve treatment efficacy: Multi-wavelength light energy can regulate the intravascular environment, promote the self-healing ability of the aortic wall, improve hemodynamics, and reduce the risk of aortic dissection progression.

[0039] 3. Wide applicability: This technology can be used for elderly patients or patients with other surgical contraindications, broadening the treatment population and avoiding situations where patients abandon treatment due to surgical risks.

[0040] 4. Treatment efficacy monitoring: Photonic technology allows for real-time monitoring of treatment effectiveness, providing a basis for adjusting subsequent treatment plans and improving the individualization of treatment.

[0041] 5. Cost-effectiveness: Compared to traditional surgery and long-term drug treatment, this technology may reduce medical costs and alleviate the financial burden on patients in the long run.

[0042] As a further preferred embodiment, the balloon 32 includes a first cavity 321 communicating with the saline channel 312 and a second cavity 322 communicating with the first cavity 321, wherein the cross-section of the second cavity 322 is arc-shaped.

[0043] Example 2

[0044] like Figures 4-5 As shown, the difference between Embodiment 2 and Embodiment 1 is that the second cavity 322 is provided in two sets, and the two sets of the second cavity 322 are symmetrically arranged on both sides of the first cavity 321.

[0045] Specifically, the sealing effect is improved by using two sets of symmetrically arranged second cavities 322.

[0046] As a further preferred embodiment, the piston cylinder 21 is made of transparent material and has a scale on the outside, through which the advance distance of the ablation part 3 in the patient's body can be observed intuitively.

[0047] As a further preferred embodiment, the rotating mechanism 211 includes a rotating base 2111 disposed on the piston cylinder 21 and a rotating adjusting plate 2112 rotatably disposed on the rotating base 2111, the rotating adjusting plate 2112 being threadedly connected to the outer side of the hollow threaded rod 23.

[0048] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A laser ablation device for arteriosclerosis occlusion, characterized in that, include: The connector (1) has a plug socket for installation at its end and a first optical fiber channel (11) is provided inside it. Adjustment part (2), the adjustment part (2) includes piston cylinder (21), piston (22) and hollow threaded rod (23), the piston cylinder (21) is provided with a rotating mechanism (211) on the side near the connector part (1), the hollow threaded rod (23) is slidably disposed in the piston cylinder (21) and threadedly connected to the rotating mechanism (211), the piston (22) is provided at the end of the hollow threaded rod (23) and a second optical fiber channel is provided inside; The ablation section (3) includes a catheter (31) and a guidewire channel (311), a saline channel (312) and a third optical fiber channel (313) disposed in the catheter (31). A balloon (32) is disposed at the end of the saline channel (312). The third optical fiber channel (313) is sequentially connected to the second optical fiber channel and the first optical fiber channel (11).

2. The laser ablation device for arteriosclerosis occlusion according to claim 1, characterized in that, The balloon (32) includes a first cavity (321) communicating with the saline channel (312) and a second cavity (322) communicating with the first cavity (321), the second cavity (322) having an arc-shaped cross section.

3. The laser ablation device for arteriosclerosis occlusion according to claim 2, characterized in that, The second cavity (322) is provided in two sets, and the two sets of the second cavity (322) are symmetrically arranged on both sides of the first cavity (321).

4. The laser ablation device for arteriosclerosis occlusion according to claim 1, characterized in that, The piston cylinder (21) is made of transparent material and has a scale on the outside.

5. A laser ablation device for arteriosclerosis occlusion according to claim 1, characterized in that, The rotating mechanism (211) includes a rotating base (2111) disposed on the piston cylinder (21) and a rotating adjusting plate (2112) rotatably disposed on the rotating base (2111), the rotating adjusting plate (2112) being threadedly connected to the outer side of the hollow threaded rod (23).

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