A dual-ring output medical optical fiber

Abstract

This utility model discloses a dual-ring beam-emitting medical optical fiber, belonging to the field of medical device technology. It includes a connector, a housing, a protective sleeve, and a dual-ring beam-emitting mechanism. The housing is fixedly connected to the rear end of the connector, the protective sleeve is fixed to the housing, and the dual-ring beam-emitting mechanism is located at the front end of the protective sleeve. The dual-ring beam-emitting mechanism includes a quartz tube with a placement groove inside. A first tapered optical fiber and a second tapered optical fiber are heat-shrinkably compressed and fixed within the placement groove. The ground end of the second tapered optical fiber abuts against the tail end of the first tapered optical fiber. This utility model solves the problems of existing medical optical fibers having a simple tip structure, poor throughput, and heat accumulation. It can form a dual-ring beam, improving throughput and cooling the treatment area.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a dual-ring emitting medical optical fiber. Background Technology

[0002] Medical optical fibers, especially laser optical fibers, are widely used in minimally invasive surgery for venous closure. They transmit laser energy through optical fibers to thermally burn the inner wall of diseased veins.

[0003] However, existing medical optical fibers often encounter difficulties when dealing with strongly restricted or severely tortuous veins. Traditional optical fiber tips are relatively rigid and have steps in their structure, which results in great resistance when the optical fiber is pushed into the tortuous blood vessels, resulting in poor passability and making it difficult for doctors to accurately deliver the optical fiber to the lesion location.

[0004] Furthermore, traditional optical fibers mostly emit light from the end face or side, resulting in a single light spot shape. When circumferentially cauterizing veins, doctors need to rotate the optical fiber, which is not only complicated to operate but also leads to uneven cauterization, with some areas being over-cauterized and others under-cauterized, thus affecting the treatment effect. Therefore, the circular light-emitting optical fiber was developed.

[0005] Existing ring-shaped laser beams have a single-ring structure, resulting in concentrated energy. This requires adjusting the laser power to suit the affected area, and the limited irradiation area of ​​a single ring generally leads to low treatment efficiency and prolonged treatment time. More seriously, the high temperatures generated during laser ablation accumulate at the fiber tip, posing a risk of burning blood vessel walls and causing blood carbonization, forming thrombi or debris. If these debris detach, they can pose serious safety hazards.

[0006] Therefore, this invention proposes a dual-ring output medical optical fiber to address the shortcomings of existing technologies. Utility Model Content

[0007] In view of the problems existing in medical optical fibers, such as the single function of the tip structure, the inability of the emitted light pattern to meet specific treatment needs, poor passage in tortuous veins, and heat accumulation, this utility model aims to provide a dual-ring emitted medical optical fiber with an improved structure that can effectively solve the above problems.

[0008] This utility model provides a dual-ring output medical optical fiber, including: a connector, a shell, a protective sleeve, and a dual-ring output mechanism disposed at the front end of the protective sleeve.

[0009] The dual-ring beam-emitting mechanism includes a quartz tube with a placement groove inside. Tapered optical fiber one and tapered optical fiber two are fixed in the placement groove by heat shrinking.

[0010] Furthermore, the outer shell is fixedly connected to the rear end of the connector, the protective sleeve is fixed to the outer shell, and the flattened end of the second tapered optical fiber abuts against the tail end of the first tapered optical fiber.

[0011] Preferably, the protective sleeve is a flexible sleeve that surrounds the double-ring light-emitting mechanism and extends rearward to the outer shell.

[0012] Preferably, the left end of the second tapered optical fiber is fixedly connected to an optical fiber bundle.

[0013] Preferably, the fiber bundle is installed inside the protective sleeve and the placement slot.

[0014] Preferably, the first tapered optical fiber is a polished tapered optical fiber, and the first tapered optical fiber is arranged along the axial direction of the placement groove.

[0015] Preferably, the second tapered fiber is a tapered fiber with its pointed end ground flat, and the ground end of the second tapered fiber is used to contact the tail end of the first tapered fiber.

[0016] Preferably, the light-emitting end of the dual-ring light-emitting mechanism is approximately flush with the front end of the protective sleeve, the light-emitting end is formed by the front end of the quartz tube, and the rear end of the protective sleeve is sealed to the front end of the outer shell through a fastener.

[0017] Preferably, a bushing (4) is installed on the outside of the protective sleeve (202), the bushing (4) is installed on the left side of the outside of the quartz tube (203), a delivery pipe (5) is installed on the bottom left side of the quartz tube (203), and multiple liquid outlet holes (6) are opened on the right side of the outer wall of the delivery pipe (5).

[0018] This utility model has the following beneficial effects:

[0019] 1. This utility model solves the problem of inconvenient operation caused by the single tip structure and excessively concentrated emitted light energy of medical optical fibers in the prior art by setting up a double-ring light emission mechanism composed of a quartz tube, a tapered optical fiber one, and a tapered optical fiber two. It makes the emitted light form a double-ring shape, with uniform energy distribution and easy control. It can be used to dilate blood vessels and improve the uniformity of treatment. In addition, the double-ring shape has a large irradiation area and can also increase efficiency.

[0020] 2. This utility model solves the problems of heat accumulation, tissue or instrument damage, and treatment debris obstructing operation in existing laser treatments by installing a delivery tube on the outside of the protective sleeve. The delivery tube can be installed or not in different working scenarios. When the delivery tube is installed, it can enter the patient's body along with the quartz tube. It effectively cools and rinses the treatment area and the fiber optic head, improving the safety and reliability of treatment. Attached Figure Description

[0021] Figure 1 This is a three-dimensional view of a dual-ring output medical optical fiber proposed in this utility model.

[0022] Figure 2 This is a front view of a dual-ring outgoing medical optical fiber proposed in this utility model;

[0023] Figure 3 This is a cross-sectional view of the dual-ring beam-emitting mechanism of a dual-ring beam-emitting medical optical fiber proposed in this utility model.

[0024] Figure 4 This is a partial structural illustration of a dual-ring emitting medical optical fiber proposed in this utility model;

[0025] Figure 5 This is a partial structural cross-sectional view of a dual-ring outgoing medical optical fiber proposed in this utility model.

[0026] Legend:

[0027] 1. Connector; 2. Double-ring beam-emitting mechanism; 201. Outer shell; 202. Protective sleeve; 203. Quartz tube; 204. Placement slot; 205. Tapered angle fiber 1; 206. Tapered angle fiber 2; 207. Fiber bundle; 4. Bushing; 5. Delivery tube; 6. Liquid outlet. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0029] Example:

[0030] Please refer to Figures 1 to 4 This utility model provides a dual-ring emitting medical optical fiber, which aims to solve the problem that existing medical optical fibers, when used to treat severely restricted or tortuous veins, have a single-function fiber tip structure, resulting in the emitted light pattern not meeting specific treatment needs and poor instrument permeability within blood vessels.

[0031] Please refer to Figure 1 and Figure 2A dual-ring emission medical optical fiber includes a connector 1, a housing 201, a protective sleeve 202, and a dual-ring emission mechanism 2 disposed at the front end of the protective sleeve 202. The connector 1 is used to connect to external medical devices. The housing 201 is fixedly connected to the rear end of the connector 1. The protective sleeve 202 is fixed to the housing 201. The dual-ring emission mechanism 2 is used to realize the emission of dual-ring beams to dilate blood vessels.

[0032] Please refer to Figure 3 and Figure 4 The dual-ring beam-emitting mechanism 2 includes a quartz tube 203, which is connected to the front right end of the protective sleeve 202. A placement groove 204 is provided inside the quartz tube 203 for placing tapered optical fibers. Tapered optical fibers 205 and 206 are fixed in the placement groove 204 by heat shrinking and pressing. Tapered optical fiber 205 is a ground tapered optical fiber, and tapered optical fiber 206 is a tapered optical fiber with its pointed end flattened. The flattened end of tapered optical fiber 206 abuts against the tail end of tapered optical fiber 205.

[0033] Please refer to Figure 3 The protective sleeve 202 is a flexible sleeve containing an optical fiber bundle 207. The flexible sleeve surrounds the double-ring light-emitting mechanism 2 and extends rearward to the outer shell 201. Inside the double-ring light-emitting mechanism 2, the first tapered optical fiber 205 is a polished tapered optical fiber, which is arranged along the axial direction of the placement groove 204. The second tapered optical fiber 206 is a tapered optical fiber with its pointed end flattened. The flattened end of the second tapered optical fiber 206 is used to contact the tail end of the first tapered optical fiber 205. This axial contact between the two optical fibers is used to form a double-ring shape for the emitted light. The light-emitting end of the double-ring light-emitting mechanism 2 is roughly flush with the front end of the protective sleeve 202. The light-emitting end is formed by the front end of the quartz tube 203. The rear end of the protective sleeve 202 and the front end of the outer shell 201 are sealed together by a fastener, ensuring the structural stability of the entire optical fiber assembly and the airtightness of the internal channel.

[0034] As a preferred embodiment, in order to facilitate passage through tortuous veins, the protective sleeve 202 is a flexible sleeve that surrounds the double-ring light-emitting mechanism 2 and extends rearward to the outer shell 201, providing good bending performance.

[0035] As another preferred embodiment, in order to achieve treatment of different areas, a removable bushing 4 is installed on the outside of the protective sleeve 202. The bushing 4 can be fitted onto the outside of the quartz tube 203. A delivery pipe 5 matching the bushing 4 is installed at the bottom of the quartz tube 203. The saline is transported through the delivery pipe 5 and finally sprayed out through the outlet hole 6. In scenarios not limited to vascular treatment, the device can synchronously deliver saline to the treatment area during the treatment process, so that the treatment area can be rinsed in a timely manner.

[0036] In another preferred embodiment, in order to form the first stage of the dual-ring output optical path, the tapered fiber 205 is a polished tapered fiber, and the tapered fiber 205 is installed and fixed along the axial direction of the placement groove 204.

[0037] In another preferred embodiment, in order to form an optical path with the first tapered fiber 205, the second tapered fiber 206 is a tapered fiber with its pointed end ground flat, and the ground end of the second tapered fiber 206 is used to make close contact with the tail end of the first tapered fiber 205.

[0038] As another preferred embodiment, in order to reduce the resistance when the device passes through the blood vessel, the light-emitting end of the double-ring light-emitting mechanism 2 is approximately flush with the front end of the protective sleeve 202, and the light-emitting end is formed by the front end of the quartz tube 203, forming a smooth head transition.

[0039] Working principle:

[0040] When the external light source is activated, the laser enters through connector 1 and passes through tapered fiber 206 and tapered fiber 1 205 in sequence. Since the flattened end of tapered fiber 206 abuts against the tail end of tapered fiber 1 205, the beam is refracted and shaped in the combined structure of the two fibers and finally exits from the light-emitting end of quartz tube 203, forming a double-ring beam.

[0041] Furthermore, an external pump drives saline solution into the delivery tube 5. The delivery tube 5 can be fitted onto the outside of the quartz tube 203 through a bushing 4. Multiple outlet holes 6 are provided on the outside of the delivery tube 5. When the quartz tube 203 is not used for vascular treatment, saline solution is sprayed out through the outlet holes 6, which can clean the treatment site in time. The dual-ring beam treats veins that are strongly restricted or severely tortuous. Through the structure of the device itself, the blood vessels are dilated during treatment, which improves the device's passability in the blood vessels, thereby solving the problem of poor passability in the prior art.

Claims

1. A double ring exit medical optical fiber, characterized in that, include: The connector (1), the outer shell (201) and the protective sleeve (202) are fixedly connected to the rear end of the connector (1) and the protective sleeve (202) is fixed to the outer shell (201). It also includes a double-ring light-emitting mechanism (2) disposed at the front end of the protective sleeve (202). The double-ring light-emitting mechanism (2) includes a quartz tube (203). A placement groove (204) is provided in the quartz tube (203). A tapered fiber 1 (205) and a tapered fiber 2 (206) are fixed in the placement groove (204) by heat shrinking. The flattened end of the tapered fiber 2 (206) abuts against the tail end of the tapered fiber 1 (205).

2. A double-clad medical delivery fiber according to claim 1, wherein, The protective sleeve (202) is a flexible sleeve that surrounds the double-ring light-emitting mechanism (2) and extends rearward to the outer shell (201).

3. A double-clad medical delivery fiber according to claim 2, wherein, The left end of the tapered fiber 2 (206) is fixedly connected to the fiber bundle (207).

4. A double-clad medical delivery fiber according to claim 3, wherein, The fiber bundle (207) is installed inside the protective sleeve (202) and the placement slot (204).

5. The dual-loop exit medical fiber of claim 1, wherein, The first tapered fiber (205) is a polished tapered fiber, and the first tapered fiber (205) is arranged along the axial direction of the placement groove (204).

6. A double-clad medical delivery fiber according to claim 1, wherein, The second tapered fiber (206) is a tapered fiber with its pointed end ground flat, and the ground end of the second tapered fiber (206) is used to contact the tail end of the first tapered fiber (205).

7. The dual-loop exit medical fiber of claim 1, wherein, The light-emitting end of the double-ring light-emitting mechanism (2) is approximately flush with the front end of the protective sleeve (202). The light-emitting end is formed by the front end of the quartz tube (203). The rear end of the protective sleeve (202) and the front end of the outer shell (201) are sealed together by a fastener.

8. The dual-loop exit medical fiber of claim 1, wherein, A bushing (4) is installed on the outside of the protective sleeve (202). The bushing (4) is installed on the left side of the outside of the quartz tube (203). A delivery pipe (5) is installed on the left side of the bottom of the quartz tube (203). Multiple liquid outlet holes (6) are opened on the right side of the outer wall of the delivery pipe (5).

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