Intracranial laser balloon dilatation catheter

Abstract

The utility model relates to an intracranial laser balloon dilatation catheter, which comprises a catheter, a laser balloon fixed on the catheter and communicated with the catheter, and a catheter seat fixed and communicated with one end, far away from the laser balloon, of the catheter, a positioning claw is arranged on one side, close to the catheter seat, of the laser balloon, and the positioning claw is fixed on the catheter. The positioning claws are in a funnel shape formed by annularly arranging a plurality of positioning wires, and the ends, with the large opening diameter, of the positioning claws face the laser balloon; the utility model has the advantages that when the laser is continuously irradiated, the laser can be ensured to irradiate in the middle and the blood circulation can be ensured.

Description

Technical Field

[0001] This utility model belongs to the field of vascular interventional catheter technology, specifically relating to an intracranial laser balloon dilation catheter. Background Technology

[0002] Intracranial balloon dilation catheters are used in interventional procedures by percutaneously inserting a balloon along a blood vessel to the site of intracranial vascular stenosis. After accurate positioning, the balloon is dilated by applying pressure to control its expansion, thereby dilating the narrowed intracranial blood vessel and restoring blood flow.

[0003] Currently, Chinese patent CN220495405U discloses an intracranial balloon dilation catheter, comprising a catheter assembly and a balloon connected in sequence. The surface of the balloon is provided with protrusions, which are hollow structures and communicate with the interior of the balloon. This intracranial balloon dilation catheter has an anti-slip function, can reduce pressure on intravascular tissue, and is conducive to opening blood vessels. However, when this technology is used for long-term positioning in blood vessels, it needs to be fixed by balloon inflation. After the balloon is inflated, it will adhere to the blood vessel wall, making it impossible for blood to flow in the blood vessel. When the balloon is deflated, it cannot ensure that the laser is centered. Therefore, there is a need for an intracranial laser balloon dilation catheter that can ensure laser centered irradiation and blood flow during continuous laser irradiation. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an intracranial laser balloon dilation catheter that can ensure centered laser irradiation and blood flow during continuous laser irradiation.

[0005] The technical solution of this utility model is as follows:

[0006] An intracranial laser balloon dilation catheter includes a catheter, a laser balloon fixed to and connected to the catheter, and a catheter seat fixed to and connected to the end of the catheter away from the laser balloon. The laser balloon is provided with a positioning claw on the side near the catheter seat. The positioning claw is fixed to the catheter. The positioning claw is composed of multiple positioning wires arranged in a funnel shape in a ring, and the larger diameter end of the multiple positioning claws faces the laser balloon.

[0007] Furthermore, when the laser balloon is in a folded and compressed state, the positioning claw is located inside the folded portion of the laser balloon, such that the maximum diameter of the positioning claw is smaller than the diameter of the blood vessel.

[0008] Furthermore, the positioning wire is specifically a nickel-titanium wire.

[0009] Furthermore, the catheter hub is provided with a connector and an inflator. The inflator is connected to the laser balloon via a catheter, and the connector is connected to the laser balloon via a catheter.

[0010] Furthermore, the catheter seat is also provided with an adjustment head, the catheter has an adjustment channel, and the adjustment head is provided with a support wire located in the adjustment channel. The stiffness of the support wire gradually increases from the end of the catheter away from the catheter seat to the end of the catheter fixed to the catheter seat.

[0011] Furthermore, the catheter includes an outer tube and an inner tube disposed inside the outer tube. An inflation channel is provided between the outer tube and the inner tube. The control channel is opened along the length of the outer tube on the outer tube wall. The inflation channel connects the inflation head and the laser balloon.

[0012] Furthermore, a thermocouple is provided at one end of the conduit that passes through the laser balloon.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model uses positioning claws to position the catheter, ensuring that it can be centered during laser irradiation without affecting blood flow and guaranteeing its use;

[0015] 2. This utility model achieves the adjustment of catheter hardness through a support wire with gradually changing hardness, which makes it convenient to adjust the catheter hardness according to different needs.

[0016] In summary, this invention has the advantages of ensuring centered laser irradiation and maintaining blood flow during continuous laser irradiation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Schematic diagram of the cross-sectional structure of the catheter.

[0019] In the diagram, 1. Thermocouple, 2. Positioning claw, 3. Connector, 4. Catheter seat, 6. Catheter, 61. Inner tube, 62. Support wire, 63. Filling channel, 64. Outer tube, 65. Control channel, 7. Laser balloon, 8. Control head, 9. Filling head, 10. Angiography tube. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-2As shown, an intracranial laser balloon dilation catheter includes a catheter 6, a laser balloon 7 fixed to and connected to the catheter 6, and a catheter seat 4 fixed to and connected to the end of the catheter 6 away from the laser balloon 7. A positioning claw 2 is provided on the side of the laser balloon 7 near the catheter seat 4. The positioning claw 2 is fixed to the catheter 6. The positioning claw 2 is composed of multiple positioning wires arranged in a funnel shape in a ring, and the end of the multiple positioning claw 2 with the larger opening diameter faces the laser balloon 7.

[0022] In use, the laser balloon 7 is connected to the laser generator. The catheter 6 and the laser balloon 7 are equipped with optical fibers and fiber optic light-emitting segments connected to the laser generator. The catheter 6 is inserted into the angiography tube 10. Then, the laser balloon 7, catheter 6, and angiography tube 10 are inserted into the blood vessel. When the laser balloon 7 reaches the treatment position, it inflates. At this time, the positioning claw 2 elastically resets and extends to contact the blood vessel wall. When treatment of the blood vessel wall is required, the laser balloon 7 contracts. At this time, the positioning claw 2 remains in contact with the blood vessel wall. Because the positioning claw 2 is funnel-shaped, when positioning… When claw 2 contacts the blood vessel wall, the optical fiber light-emitting segment is located at the center of the blood vessel. Since the positioning claw 2 is composed of multiple positioning wires, blood can flow normally during the positioning process. When the catheter needs to be removed after the treatment, the catheter 6 needs to be pulled out. The catheter 6 drives the conical end of the positioning claw 2 into the angiography tube 10. The positioning claw 2 gradually contracts based on the inner diameter of the angiography tube 10, thereby achieving the contraction of the positioning claw 2 until the positioning claw 2 is completely inside the angiography tube 10. Then, the catheter 6, the angiography tube 10 and the laser balloon 7 can be removed from the blood vessel.

[0023] In this embodiment, when the laser balloon 7 is in a folded and compressed state, the positioning claw 2 is located inside the folded portion of the laser balloon 7, so that the maximum diameter of the positioning claw 2 is smaller than the diameter of the blood vessel, ensuring that the positioning claw 2 is properly inserted into the blood vessel.

[0024] In this embodiment, the positioning wire is specifically a nickel-titanium wire.

[0025] In this embodiment, a connector 3 and an inflator 9 are fixed on the catheter seat 4. The inflator 9 is connected to the laser balloon 7 through the catheter 6, and the connector 3 is connected to the laser balloon 7 through the catheter 6.

[0026] In use, the connector 3 is connected to the connector, which is then connected to the optical fiber to ensure a normal connection. The inflation head 9 is connected to the external inflation assembly to facilitate the control of the expansion and contraction of the laser balloon 7.

[0027] In this embodiment, the catheter seat 4 is also fixed with an adjustment head 8, the catheter 6 has an adjustment channel 65, the adjustment head 8 is provided with a support wire 62 located in the adjustment channel 65, and the hardness of the support wire 62 gradually increases from the end of the catheter 6 away from the catheter seat 4 to the end of the catheter 6 fixed to the catheter seat 4.

[0028] During use, the support wire 62 is inserted into or extended out of the adjustment channel 65 as needed to adjust the softness and hardness of the catheter 6, so as to facilitate the adjustment of the softness and hardness of the catheter 6.

[0029] In this embodiment, the catheter 6 includes an outer tube 64 and an inner tube 61 fixed inside the outer tube 64. One end of the outer tube 64 and the inner tube 61 are connected and sealed to each other, and the other end is connected to the catheter seat 4. An inflation channel 63 is provided between the outer tube 64 and the inner tube 61. An adjustment channel 65 is opened along the length of the outer tube 64 on the tube wall of the outer tube 64. The inflation channel 63 connects the inflation head 9 and the laser balloon 7.

[0030] During use, the optical fiber is installed on the wall of the inner tube 61, and the filling channel 63 enables the filling head 9 to connect with the laser balloon 7, ensuring the normal use of the laser balloon 7.

[0031] In this embodiment, a sheet-like thermocouple 1 is fixed to one end of the catheter 6 that passes through the laser balloon 7. The thermocouple 1 is connected to an external temperature measuring device, and the connected line is located inside the wall of the outer tube 64. The temperature during fiber optic treatment is detected by the thermocouple 1 to avoid damaging blood vessels.

[0032] Among them, the channels for the thermocouple 1 connection line and the optical fiber can be set on the conduit 6 according to actual needs.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features; any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An intracranial laser balloon dilation catheter, comprising a catheter, a laser balloon fixed to and communicating with the catheter, and a catheter seat fixed to and communicating with one end of the catheter away from the laser balloon, characterized in that: The laser balloon is provided with a positioning claw on one side near the catheter seat. The positioning claw is fixed on the catheter. The positioning claw is composed of multiple positioning wires arranged in a funnel shape, and the larger diameter end of the multiple positioning claws faces the laser balloon.

2. The intracranial laser balloon dilation catheter according to claim 1, characterized in that: When the laser balloon is in a folded and compressed state, the positioning claw is located inside the folded portion of the laser balloon, such that the maximum diameter of the positioning claw is smaller than the diameter of the blood vessel.

3. The intracranial laser balloon dilation catheter according to claim 1 or 2, characterized in that: The positioning wire is specifically a nickel-titanium wire.

4. The intracranial laser balloon dilation catheter according to claim 3, characterized in that: The catheter hub is provided with a connector and an inflator. The inflator is connected to the laser balloon via a catheter, and the connector is connected to the laser balloon via a catheter.

5. The intracranial laser balloon dilation catheter according to claim 3, characterized in that: The catheter seat is also provided with an adjustment head. The catheter has an adjustment channel. The adjustment head is provided with a support wire located in the adjustment channel. The stiffness of the support wire gradually increases from the end of the catheter away from the catheter seat to the end of the catheter fixed to the catheter seat.

6. The intracranial laser balloon dilation catheter according to claim 5, characterized in that: The catheter includes an outer tube and an inner tube disposed inside the outer tube. An inflation channel is provided between the outer tube and the inner tube. The control channel is opened along the length of the outer tube on the outer tube wall. The inflation channel connects the inflation head and the laser balloon.

7. The intracranial laser balloon dilation catheter according to claim 1, characterized in that: A thermocouple is installed at one end of the conduit that passes through the laser balloon.

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