Laser fiber catheter and medical equipment

Abstract

The utility model discloses a laser optical fiber catheter and medical equipment, and relates to the technical field of medical instruments. The laser optical fiber catheter comprises a catheter main body and an infusion cavity, the near end of the catheter body is suitable for being connected with a laser light source, and the far end of the catheter body extends into a blood vessel. The infusion cavity is arranged around the periphery of the catheter main body and forms an infusion channel for infusing liquid with the catheter main body, the far end of the infusion cavity is provided with at least one liquid outlet hole of the infusion channel, the near end of the infusion cavity is suitable for being connected with a liquid storage container, and the infusion cavity is further used for enhancing the hardness of the laser fiber catheter. According to the utility model, the structure of the laser optical fiber catheter is improved, liquid medicine infusion in the operation process of laser treatment is realized, the treatment effect is improved, the compliance of the laser optical fiber catheter is improved, and the operation convenience of medical personnel is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a laser optical fiber catheter and medical equipment. Background Art

[0002] Varicose veins of the lower extremities are a common venous disease in vascular surgery, with an incidence rate of up to 20% in the general population. The incidence of varicose veins increases with age, severely impacting quality of life and increasing the economic burden on society. Patients with varicose veins often experience discomfort such as lumpy protrusions, soreness, heaviness, and fatigue. Left untreated, these conditions can progress to limb edema, eczema, hyperpigmentation, venous ulcers, and even thrombophlebitis, significantly impacting patients' work and daily lives.

[0003] Intracavitary laser treatment is less invasive, has reliable surgical results, and has a relatively low recurrence rate for patients. Existing laser fiber optic catheters for varicose veins of the lower limbs include an outer tube and an optical fiber disposed within the outer tube. This type of laser fiber optic catheter only has a laser treatment effect and cannot infuse drugs such as vascular sclerosants. Generally, a dedicated infusion catheter is required to inject the drug solution to reduce thrombosis and thrombophlebitis. In addition, this type of varicose vein laser fiber optic catheter generally uses a single optical fiber. In order to adapt to the conditions of conventional blood vessels, the catheter is relatively soft. In more complex blood vessel conditions, the hardness is insufficient, the catheter has poor compliance, and the application end of the catheter is difficult to enter the blood vessel, which increases the difficulty of operation for medical staff and poses certain surgical risks. Utility Model Content

[0004] The main purpose of the present utility model is to provide a laser fiber optic catheter and medical equipment, aiming to achieve the infusion of liquid medicine during the laser treatment operation to improve the treatment effect, while improving the compliance of the laser fiber optic catheter and improving the convenience of operation for medical staff.

[0005] To achieve the above objectives, the present invention provides a laser fiber catheter, comprising:

[0006] a catheter body, wherein the proximal end of the catheter body is suitable for connecting to a laser light source, and the distal end of the catheter body is suitable for extending into a blood vessel; and

[0007] An infusion cavity is arranged around the outer circumference of the catheter body and forms an infusion channel for infusing liquid. The distal end of the infusion cavity is provided with at least one liquid outlet hole of the infusion channel. The proximal end of the infusion cavity is suitable for connecting to a liquid storage container. The infusion cavity is also used to enhance the hardness of the laser fiber catheter.

[0008] Optionally, the distal end of the infusion cavity is a closed structure, and the plurality of liquid outlet holes are spaced apart on the outer peripheral wall of the infusion cavity.

[0009] Optionally, the plurality of liquid outlet holes are arranged in a spiral shape on the infusion cavity.

[0010] Optionally, a plurality of the liquid outlet holes are arranged at intervals along the circumference of the infusion cavity to form a liquid outlet hole group, and the distal end of the infusion cavity is provided with a plurality of liquid outlet hole groups arranged at intervals along its length direction.

[0011] Optionally, the diameter of the liquid outlet hole is smaller than the inner diameter of the infusion cavity.

[0012] Optionally, the distal end of the catheter body extends to the outside of the distal end of the infusion cavity.

[0013] Optionally, the laser fiber catheter further comprises a connector, one end of which is connected to the proximal end of the infusion cavity, and the other end of which is suitable for connecting to the liquid storage container.

[0014] Optionally, the laser fiber catheter further comprises a connector, one end of which is connected to the proximal end of the catheter body, and the other end of which is suitable for connecting to the laser light source.

[0015] Optionally, the catheter body includes a protective tube and a laser optical fiber disposed in the protective tube, and the protective tube and the infusion cavity are integrally formed, or the protective tube and the infusion cavity are bonded or welded to each other.

[0016] To achieve the above-mentioned object, the present invention further provides a medical device, comprising the laser fiber catheter as described above, wherein the laser fiber catheter comprises:

[0017] a catheter body, wherein the proximal end of the catheter body is suitable for connecting to a laser light source, and the distal end of the catheter body is suitable for extending into a blood vessel; and

[0018] An infusion cavity is arranged around the outer circumference of the catheter body and forms an infusion channel for infusing liquid. The distal end of the infusion cavity is provided with at least one liquid outlet hole of the infusion channel. The proximal end of the infusion cavity is suitable for connecting to a liquid storage container. The infusion cavity is also used to enhance the hardness of the laser fiber catheter.

[0019] In the technical solution of the present invention, the laser fiber optic catheter includes a catheter body and an infusion cavity; the proximal end of the catheter body is suitable for connecting to a laser light source, and the distal end of the catheter body is suitable for extending into a blood vessel; the infusion cavity is arranged around the periphery of the catheter body and forms an infusion channel with it for infusing liquid, the distal end of the infusion cavity is provided with at least one liquid outlet for the infusion channel, the proximal end of the infusion cavity is suitable for connecting to a liquid storage container, and the infusion cavity is also used to enhance the hardness of the laser fiber optic catheter. It can be understood that the present invention improves the structure of the laser fiber optic catheter, realizes the infusion of liquids such as vascular sclerosants, contrast agents, saline, anesthetics, etc. or other liquids during laser treatment surgery, greatly improving the treatment effect. Moreover, by covering the infusion cavity around the periphery of the catheter body, the hardness of the laser fiber optic catheter can be effectively increased, thereby making it better able to adapt to complex vascular conditions and effectively improving the convenience of operation for medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 This is a schematic structural diagram of an embodiment of the laser fiber catheter of the present utility model;

[0022] Figure 2 This is a structural diagram of the first liquid outlet solution in an embodiment of the laser fiber catheter of the present utility model;

[0023] Figure 3 for Figure 2 A cross-sectional view of the distal end of the laser fiber catheter;

[0024] Figure 4 This is a structural diagram of the second liquid outlet solution in an embodiment of the laser fiber catheter of the present utility model;

[0025] Figure 5 for Figure 4 A cross-sectional view of the distal end of the laser fiber catheter.

[0026] Description of Figure Numbers:

[0027] 10. Catheter body; 20. Infusion cavity; 30. Joint; 40. Connector; 20a. Infusion channel; 20b. Liquid outlet; 11. Application end; 110. Protective tube; 120. Laser fiber.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0031] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The utility model provides a laser optical fiber catheter which can be applied to intracavitary laser treatment surgery.

[0034] Reference Figures 1 to 5In some embodiments of the present invention, the laser fiber optic catheter includes a catheter body 10 and an infusion cavity 20; the proximal end of the catheter body 10 is suitable for connecting to a laser light source, and the distal end of the catheter body 10 is suitable for extending into a blood vessel; the infusion cavity 20 is arranged around the outer circumference of the catheter body 10 and forms an infusion channel 20a for infusing liquid with it, and the distal end of the infusion cavity 20 is provided with at least one liquid outlet hole 20b of the infusion channel 20a, and the proximal end of the infusion cavity 20 is suitable for connecting to a liquid storage container. The infusion cavity 20 is also used to enhance the hardness of the laser fiber optic catheter.

[0035] In this embodiment, the catheter body 10 includes a protective tube 110 and a laser optical fiber 120 disposed in the protective tube 110. The protective tube 110 and the infusion cavity 20 are integrally formed, or the protective tube 110 and the infusion cavity 20 are fixed by bonding or welding.

[0036] In this embodiment, the length of the infusion lumen 20 should be configured to be shorter than the length of the catheter body 10, and the application end 11 of the catheter body 10 should extend beyond the end of the infusion lumen 20 to prevent the infusion lumen 20 from affecting the effectiveness of laser treatment. The material of the infusion lumen 20 can be the same as or different from the outer tube material of the catheter body 10, and this is not limited here.

[0037] Because existing laser fiber catheters using a single optical fiber are relatively flexible and difficult for medical personnel to deliver to the target treatment location in complex vascular conditions, this embodiment primarily focuses on catheter bodies 10 using a single optical fiber. Of course, to meet the requirements for catheter adaptability and therapeutic efficacy in some special vascular conditions, catheter bodies 10 may also utilize two or more laser optical fibers 120, and the number of laser optical fibers 120 is not limited herein.

[0038] Optical fibers are typically made of quartz. Extending the fiber forward creates an independent, ring-shaped light-emitting area, which evenly scatters light. During laser treatment, single or dual wavelengths of light are transmitted through the quartz fiber to the surrounding areas of the ring-shaped light-emitting area.

[0039] In this embodiment, in order to facilitate the connection between the catheter and the laser host, the laser fiber catheter also includes a connector 40, one end of the connector 40 is connected to the proximal end of the catheter body 10, and the other end of the connector 40 is suitable for connecting to a laser light source.

[0040] It can be understood that the present invention improves the structure of the laser fiber optic catheter, realizes the infusion of vascular sclerosing agents, contrast agents, saline, anesthetics and other drugs or other liquids during the laser treatment operation, greatly improving the treatment effect, and by covering the infusion cavity 20 on the periphery of the catheter body 10, the hardness of the laser fiber optic catheter can be effectively improved, so that it can better adapt to complex vascular conditions, effectively improving the convenience of operation for medical staff.

[0041] In order to improve the uniformity of drug injection and avoid drugs or other liquids flowing to the laser emitting area and affecting laser treatment, refer to Figure 1 and Figure 2 In one embodiment, the distal end of the infusion cavity can be set as a closed structure, and a plurality of liquid outlet holes 20b are spaced apart on the outer peripheral wall of the infusion cavity 20.

[0042] In this embodiment, a plurality of liquid outlet holes 20b can be arranged in a spiral shape on the infusion cavity 20 so that the liquid medicine can be sprayed into the blood vessels more evenly. Figures 2 to 5 The liquid outlet holes 20b can also be configured as follows: multiple liquid outlet holes 20b are arranged at intervals along the circumference of the infusion cavity 20 to form a liquid outlet hole 20b group, and the distal end of the infusion cavity 20 is provided with multiple liquid outlet hole 20b groups arranged at intervals along its length direction.

[0043] Furthermore, the diameter of the liquid outlet 20b may be smaller than the inner diameter of the infusion cavity 20 to prevent the liquid from flowing out too quickly, which helps to further improve the uniformity of the liquid outlet and thus enhance the treatment effect.

[0044] In addition, in order to facilitate the connection of liquid storage containers such as liquid bottles or medicine bags, refer to Figure 1 In one embodiment, the laser fiber optic catheter may further include a connector 30, one end of which is connected to the proximal end of the infusion cavity 20, and the other end of the connector 30 is suitable for connecting to a liquid storage container. The connector 30 can be a Luer connector, etc., which is not limited here.

[0045] The present invention also proposes a medical device, which includes a laser fiber optic catheter. The specific structure of the laser fiber optic catheter refers to the above-mentioned embodiment. Since the medical device proposed by the present invention includes all schemes of all embodiments of the above-mentioned laser fiber optic catheter, it has at least the same technical effects as the laser fiber optic catheter, which will not be elaborated here one by one.

[0046] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by utilizing the contents of the present invention specification and drawings under the inventive concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A laser fiber catheter, characterized in that: include: a catheter body, wherein the proximal end of the catheter body is adapted to be connected to a laser light source, and the distal end of the catheter body is adapted to be inserted into a blood vessel; as well as An infusion cavity is arranged around the outer circumference of the catheter body and forms an infusion channel for infusing liquid. The distal end of the infusion cavity is provided with at least one liquid outlet hole of the infusion channel. The proximal end of the infusion cavity is suitable for connecting to a liquid storage container. The infusion cavity is also used to enhance the hardness of the laser fiber catheter.

2. The laser fiber catheter according to claim 1, wherein: The distal end of the infusion cavity is a closed structure, and a plurality of liquid outlet holes are arranged at intervals on the outer peripheral wall of the infusion cavity.

3. The laser fiber catheter according to claim 2, wherein: The plurality of liquid outlet holes are arranged in a spiral shape on the infusion cavity.

4. The laser fiber catheter according to claim 2, wherein: The plurality of liquid outlet holes are arranged at intervals along the circumference of the infusion cavity to form a liquid outlet hole group. The distal end of the infusion cavity is provided with a plurality of liquid outlet hole groups arranged at intervals along the length direction thereof.

5. The laser fiber catheter according to claim 2, wherein: The diameter of the liquid outlet is smaller than the inner diameter of the infusion cavity.

6. The laser fiber catheter according to claim 1, wherein: The distal end of the catheter body extends to the outside of the distal end of the infusion cavity.

7. The laser fiber catheter according to claim 1, wherein: The laser optical fiber catheter further comprises a connector, one end of which is connected to the proximal end of the infusion cavity, and the other end of which is suitable for connecting to the liquid storage container.

8. The laser fiber catheter according to claim 1, wherein: The laser fiber catheter further includes a connector, one end of which is connected to the proximal end of the catheter body, and the other end of which is suitable for connecting to the laser light source.

9. The laser fiber catheter according to claim 1, wherein: The catheter body includes a protective tube and a laser optical fiber arranged in the protective tube. The protective tube and the infusion cavity are integrally formed, or the protective tube and the infusion cavity are bonded or fused and fixed.

10. A medical device, characterized in that: The invention comprises the laser optical fiber catheter according to any one of claims 1 to 9.

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