CN217007750U

CN217007750U - Optical fiber bundling fixing device, laser guide pipe and optical fiber coupling system thereof

Info

Publication number: CN217007750U
Application number: CN202220534239.7U
Authority: CN
Inventors: 金旻; 刘强宪; 余贤涛; 卢慧洋
Original assignee: Minimally Invasive Investment Holdings Ltd
Current assignee: Minimally Invasive Investment Holdings Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-19
Anticipated expiration: 2032-03-11

Abstract

The utility model relates to the technical field of medical instruments, in particular to an optical fiber bundling fixing device, a laser catheter and an optical fiber coupling system thereof, wherein the optical fiber bundling fixing device comprises an inserting core and an optical fiber fixing piece, the inserting core is provided with a core channel which runs through the length direction of the inserting core and is used for penetrating an optical fiber bundle, and the outer surface of the inserting core is an arc surface formed by rotating around the central line of the length direction of the inserting core and is provided with an opening communicated with the core channel; the optical fiber fixing piece comprises a pressing component, the optical fiber fixing piece is connected with the inserting core, and the pressing component is located at the opening and provided with a blocking portion used for tightly blocking the optical fiber bundle. The optical fiber bundling fixing device realizes the extrusion and fixation of the bare optical fiber bundle through a mechanical structure, has good fixing effect and simplifies the assembly process.

Description

Optical fiber bundling fixing device, laser guide pipe and optical fiber coupling system thereof

Technical Field

The utility model relates to the technical field of medical instruments, in particular to an optical fiber bundling and fixing device, a laser catheter and an optical fiber coupling system thereof.

Background

The change of life style caused by the rapid increase of economy leads diseases such as hypertension, obesity and the like to be increasingly common in China, thereby increasing the morbidity risk of cardiovascular diseases. At present, cardiovascular disease treatment technologies include drug therapy, surgical operation and interventional therapy, wherein the interventional therapy is widely applied to clinic due to the advantages of small trauma, high safety, good treatment effect and the like.

The laser thrombolysis technology commonly used in the day ahead usually comprises a laser and a laser catheter, wherein a connector is arranged at the tail end of the laser catheter and is used for being connected with a coupling system, pulse laser generated by the laser is gathered through the coupling system and enters an optical fiber of the laser catheter through the connector, the laser energy of the pulse laser is conducted to an embolism position through the laser catheter, and the laser energy emulsifies thrombus of the embolism position or directly ablates the thrombus so as to achieve the treatment purpose. The connectors of the prior art typically contain rectangular, square or circular channels for holding the optical fibers in the laser catheter. In the case of an optical fiber bundle composed of a plurality of optical fibers, the plurality of optical fibers are generally bonded and fixed by an adhesive such as epoxy resin in the conventional connector. However, after the laser guide tube is put into use, the adhesive can absorb laser radiation energy to generate local heat points to damage the optical fiber, and other incompletely vaporized adhesive residues can be mixed after the adhesive is heated and vaporized, so that the coupling efficiency is reduced due to the coverage of the end face of the optical fiber. Furthermore, in the case of the optical fiber bundle fixed by adhesive bonding, it is difficult to remove the optical fiber bundle without damaging it, resulting in difficulty in rework. Also, curing of the adhesive requires a certain amount of time, which increases the production cost.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an optical fiber bundle fixing device, a laser catheter and an optical fiber coupling system thereof, which can fix a plurality of optical fibers by a complete mechanical method and avoid the problem caused by the adhesive fixing method, in order to solve the problem in the prior art that the optical fiber bundle composed of multiple optical fibers is difficult to fix.

The utility model discloses an optical fiber bundling fixing device which comprises an inserting core and an optical fiber fixing piece, wherein the inserting core is provided with a core channel which penetrates through the length direction of the inserting core and is used for penetrating an optical fiber bundle, and the outer surface of the inserting core is an arc surface formed by rotating around the central line of the length direction of the inserting core and is provided with an opening communicated with the core channel; the optical fiber fixing piece comprises a pressing component, the optical fiber fixing piece is connected with the inserting core, and the pressing component is located at the opening and is provided with a resisting part for resisting the optical fiber bundle tightly.

In one embodiment, a first connecting structure extending along the circumferential direction of the ferrule is disposed on the outer surface of the ferrule, and the optical fiber fixing member is provided with a second connecting structure, which is engaged with the first connecting structure to fix the optical fiber fixing member and the ferrule.

In one embodiment, the first connecting structure comprises an annular slot and/or a protrusion, and the second connecting structure is provided with an insertion structure matched with the slot and/or a groove structure matched with the protrusion.

In one embodiment, the second connecting structure is an annular elastic clamping piece with a notch, and the annular elastic clamping piece is clamped in the groove-shaped first connecting structure.

In one embodiment, the fiber holder includes an elongated arm that can be bent into a loop, and the fiber holder is fixedly connected to the ferrule by the elongated arm.

In one embodiment, the optical fiber fixing member includes an annular body clamped on the periphery of the ferrule, and two cantilever arms extending axially outwards from two sides of the annular body, and the two cantilever arms form the pressing assembly.

In one embodiment, the cantilever is an inclined arm with an end inclined to the axis of the annular body.

In one embodiment, the connection position of the optical fiber fixing piece and the ferrule satisfies the following conditions: the circumferential outer surface of the joint and the outer surface of the inserting core are on the same cylindrical surface.

In one embodiment, the optical fiber bundle fixing device further comprises an outer protective sleeve sleeved on the end of the ferrule.

In one embodiment, the ferrule end has a stage on which the outer protective sleeve is sleeved.

The utility model discloses a laser catheter, wherein the connecting end of the laser catheter is provided with any one of the optical fiber bundling and fixing devices.

The utility model discloses an optical fiber coupling system in a third aspect, which comprises a laser device and the laser guide pipe, wherein the laser device comprises a laser and a coupling system, the laser is connected with the coupling system, and the coupling system is connected with the connecting end of the laser guide pipe.

Advantageous effects

The utility model provides an optic fibre fixing device tied in a bundle sets up the surface of lock pin into the arc, makes it when the link as laser pipe, because the profile phase-match of lock pin and laser pipe can realize pegging graft with the laser instrument fast under the condition that does not have other supplementary fixed establishment, has improved assembly efficiency greatly. Through set up the core way in the lock pin to set up the opening that communicates with the core way on its surface, compress tightly the department that keeps out of subassembly can prevent that the bare fiber bundle from following the core through the opening and say, realize the reliable fixed to the bare fiber bundle. Compared with the prior art, the optical fiber bundle fixing device avoids using an adhesive, fixes the bare optical fiber bundle in a pure mechanical mode, and solves a series of problems caused by the use of the adhesive in the prior art. When the optical fiber bundling and fixing device is assembled, the steps are clear and clear, the operation is simple, the risk of breaking optical fibers in the assembly is reduced, and the yield is effectively improved.

Drawings

FIG. 1 is a schematic view of a fiber bundle holding device according to the present invention in some embodiments;

FIG. 2 is a schematic view of a positioning ferrule of the fiber bundle holding device of the present invention in some embodiments;

FIG. 3 is a schematic view of an optical fiber fixing member in some embodiments of the optical fiber bundle holding device of the present invention;

FIG. 4 is a schematic view of an extension arm of a fiber holding member in a partial embodiment of the fiber bundle holding device according to the present invention;

FIG. 5 is a schematic view of the engagement of the extension arm and ferrule of the fiber mount of FIG. 4;

FIG. 6 is a schematic diagram of a circumferential position-limiting element of the optical fiber bundle fixing device according to some embodiments of the present invention;

FIG. 7 is a schematic view of the laser catheter of the present invention in a partial embodiment;

FIG. 8 is a schematic illustration of a portion of an embodiment of the fiber coupling system of the present invention;

wherein, 1 is the location bolt, 2 is the optic fibre mounting, 3 is outer protective sheath, 4 is bare fiber bundle, 6 is the laser catheter, 7 is optic fibre fixing device tied in a bundle, 8 is the laser instrument, 9 is the coupling system, 11 is the slot, 12 is first connection structure, 13 is circumference locating part, 14 is the stage, 111 is the opening, 21 is compressing tightly the subassembly, 22 is second connection structure, 23 is the extension arm.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 and 2, fig. 1 is a schematic view illustrating an optical fiber bundle fixing device according to an embodiment of the present invention, where the optical fiber bundle fixing device includes a ferrule 1 and an optical fiber fixing member 2, and the optical fiber fixing member 2 is connected to the ferrule 1. As shown in fig. 2, which is a schematic diagram of a ferrule 1 in some embodiments, a core path 11 penetrating through the ferrule 1 in a length direction is provided inside the ferrule, and a plurality of optical fibers may form a bare fiber bundle 4 to penetrate through the core path 11. The outer surface of the ferrule 1 is a curved surface formed by rotating around the center line of the length direction thereof, and the outer surface is provided with an opening 111 communicated with the core passage 11. Referring to fig. 2 and 3, fig. 3 is a schematic diagram of an optical fiber fixing member 2 in a partial embodiment, in which the optical fiber fixing member 2 includes a pressing member 21, and a stopper 211 is disposed on the pressing member 21. When the fiber fixing member 2 is connected to the ferrule 1, the pressing member 21 is located at the opening 111, and the stopper 211 can block the bare fiber bundle 4 from coming out of the opening 111.

According to the optical fiber bundling fixing device, the outer surface of the inserting core 1 is arc-shaped, so that when the optical fiber bundling fixing device is used as a connecting end of a laser guide pipe, due to the fact that the inserting core 1 is matched with the profile of the laser guide pipe, rapid insertion with a laser can be achieved under the condition that other auxiliary fixing mechanisms are not provided, and assembly efficiency is greatly improved. By providing the core passage 11 in the ferrule 1 and providing the opening 111 on the outer surface thereof, which communicates with the core passage 11, the stopper 211 of the hold-down assembly 21 can prevent the bare fiber bundle 4 from coming out of the core passage 11 through the opening 111, thereby achieving reliable fixation of the bare fiber bundle 4. Compared with the prior art, the optical fiber bundle fixing device avoids using an adhesive, fixes the bare optical fiber bundle in a pure mechanical mode, and solves a series of problems caused by the use of the adhesive in the prior art. When the optical fiber bundling and fixing device is assembled, the steps are clear and clear, the operation is simple, the risk of breaking optical fibers in the assembly is reduced, and the yield is effectively improved.

Preferably, as shown in fig. 2 and 3, in some embodiments, the outer peripheral surface of the ferrule 1 is provided with a first connecting structure 12, and the optical fiber fixing member 2 is provided with a second connecting structure 22, and the second connecting structure 22 can be engaged with the first connecting structure 12, so as to realize the fixed connection between the optical fiber fixing member 2 and the ferrule 1. The optical fiber bundling fixing device provided by the utility model has the advantages that the insertion core 1 and the optical fiber fixing member 2 are arranged to be connected in a clamping manner through the first connecting structure 12 and the second connecting structure 22, no extra tool is needed in the assembly process of the optical fiber bundling fixing device, the assembly process is simplified, and the optical fiber fixing member 2 is connected to the insertion core 1 after the bare optical fiber bundle 4 is placed in the core channel 11 of the insertion core 1. In the assembling process, the step of verifying whether the bare optical fiber bundle 4 is fixed does not exist, the manufacturing efficiency is improved, the risk of breaking the optical fiber in the assembling process is further reduced, and the yield is improved.

It is to be understood that the present invention is not strictly limited to the specific form of the first connecting structure 12 and the second connecting structure 22, and that it has numerous implementation possibilities. For example, in some embodiments as shown in fig. 2, the first connecting structure 12 is an annular slot disposed around the outer surface of the ferrule 1, and correspondingly, as shown in fig. 3, the second connecting structure 22 is provided with an insertion structure corresponding to the annular slot. The insertion structure is inserted into the annular slot, so that the first connection structure 12 and the second connection structure 22 can be fixed in a snap-fit connection. Similarly, in other embodiments, the first connecting structure 12 may be an annular protrusion disposed around the outer surface of the ferrule 1, and correspondingly, the second connecting structure 22 is provided with a groove structure matching with the annular protrusion. When the annular protrusion is engaged in the groove structure, the first connection structure 12 and the second connection structure 22 can be engaged and fixed. Compared with other forms of the first connecting structure 12 and the second connecting structure 22, the two first connecting structures 12 and the second connecting structure 22 are most easy to assemble, the assembling work is very direct, and the assembling efficiency is greatly improved while the stability of the connection between the ferrule 1 and the optical fiber fixing member 2 is ensured.

More specifically, as shown in fig. 3, in some embodiments, the second connecting structure 22 is a ring-shaped elastic latch with a notch. The ferrule 1 can pass through the notch, so that the annular elastic clip can be clamped in the groove-shaped first connecting structure 12 on the ferrule 1. In this embodiment, the second connecting structure 22 may be made of a material having elasticity, such as plastic or stainless steel, nitinol, etc. having elasticity.

In other embodiments, as shown in fig. 4, the first connecting structure 12 and the second connecting structure 22 are not necessary for the fiber bundle fixing device of the present invention to be connected. In this embodiment, the fiber holding member 2 includes an elongated arm 23, and the elongated arm 23 may be formed to be bent in a ring shape. As shown in fig. 5, the fiber holder 2 is pre-assembled with the ferrule 1, and then the extension arm 23 is bent along the outer surface of the ferrule 1 to form a form in which the extension arm 23 is wound around the outer surface of the ferrule 1, thereby achieving the fixed connection of the fiber holder 2 to the ferrule 1. The optical fiber fixing member 2 of this form has a wider application range and can be easily mounted on ferrules 1 having different outer surfaces, thereby enabling the simultaneous assembly of a plurality of different models of optical fiber bundle fixing devices of the present invention.

As shown in fig. 6, in the illustrated embodiment, the circumferential outer surface of the ferrule 1 may be further provided with a raised circumferential positioning member 13, and the fiber fixing member 2 is kept fixed with the circumferential position of the ferrule 1 by the circumferential positioning member 13. Taking the example of the optical fiber fixing member 2 provided with the aforementioned bendable extension arms 23, in this embodiment, the extension arms 23 are two, the circumferential positioning member 13 is a protrusion extending along the length direction of the outer circumferential surface of the ferrule 1, the two extension arms 23 are bent around the outer surface of the ferrule 1 from two directions, namely, counterclockwise and clockwise, respectively, and the two extension arms 23 abut against two sides of the circumferential positioning member 13. In this way, the circumferential position of the optical fiber fixing member 2 and the ferrule 1 is fixed, thereby ensuring that the optical fiber fixing member 2 can play a role in fixing the bare optical fiber bundle 4 in the ferrule 1. Obviously, the scheme of providing the annular elastic clamping piece with the notch on the optical fiber fixing piece 2, or other schemes, may also be provided with the circumferential positioning piece 13, and the principle is similar to the foregoing embodiment, and will not be described again here.

Preferably, in some embodiments, when the fiber fixing member 2 is connected to the ferrule 1, the circumferential outer surface of the connection does not protrude from the outer surface of the ferrule 1. Further preferably, the circumferential outer surface of the connection part of the optical fiber fixing member 2 and the ferrule 1 is on the same cylindrical surface as the outer surface of the ferrule 1. When the optical fiber fixing part 2 is connected with the ferrule 1, the outer diameter of the whole fixing device in the length direction is consistent, in other words, the outer surface of the whole fixing device is in smooth transition, so that the optical fiber bundling fixing device can be directly inserted into a laser without any interference with the laser, and the convenience and the reliability of the optical fiber bundling fixing device during the assembly of an optical fiber coupling system are improved.

It is to be understood that the optical fiber bundle holding device of the present application is not limited to the specific form of the hold-down assembly 21. In some embodiments, as shown in fig. 3, the fiber fixing member 2 includes a ring-shaped body configured to be clamped on the circumference of the ferrule 1, and two cantilever arms are provided on two sides of the ring-shaped body and extend outward in the axial direction, and the cantilever arms form the pressing member 21. Further, the cantilever is an inclined straight arm with an end inclined to the axis of the annular body, and the tail end of the cantilever is the resisting part. Thus, when the annular body of the optical fiber fixing member 2 is clamped on the ferrule 1, the cantilever naturally extends to the core passage 11 of the ferrule 1, and the end of the cantilever is located at the opening 111 of the core passage 11, so as to prevent the optical fibers in the bare optical fiber bundle 4 from falling out of the core passage 11 through the opening 111.

Preferably, in some embodiments, the resisting portion may be a concave arc. The concave arc-shaped abutting portion can be better fitted with the bare fiber bundle 4, and does not generate excessive pressure to the bare fiber bundle 4.

As shown in fig. 1, in some embodiments, the optical fiber bundle fixing device of the present application further includes an outer protective sleeve 3 connected to one end of the ferrule 1 in the length direction, and a bare optical fiber bundle 4 can pass through the outer protective sleeve 3. The outer protective sleeve 3 is used for protecting the bare fiber bundle 4 when the bare fiber bundle 4 is connected with the laser device by using the optical fiber bundle fixing device of the application.

Specifically, in some embodiments, the outer protective sleeve 3 may be press-fit with the end of the ferrule 1, or the outer protective sleeve 3 may be screwed with the ferrule 1 by providing matching threads on the outer side of the end of the ferrule 1 and the inner side of the outer protective sleeve 3. The outer protective sheath 3 is usually made of stainless steel, aluminum alloy or titanium alloy.

Preferably, as shown in fig. 2, in some embodiments, the end of the ferrule 1 has a stage 14, and the outer protective sleeve 3 is fitted over the stage 14. Thus, the stage 14 provides axial limit on one hand, and when the outer protective sleeve 3 is sleeved on the ferrule 1, an operator can clearly know whether the outer protective sleeve 3 is installed in place; on the other hand, the optical fiber bundle fixing device thus configured can surely prevent the outer jacket 3 from sliding in the axial direction of the ferrule 1 when connected to the coupling system. Preferably, the outer diameter of the outer protective sleeve 3 is equal to the outer diameter of the ferrule 1 at the stage 14 where the ferrule 1 is not provided, so that the axial surface of the outer protective sleeve 3 and the outer surface of the ferrule 1 are smoothly engaged, which is beneficial to the connection of the optical fiber bundling fixing device and the coupling system of the present invention.

As shown in FIG. 7, another aspect of the present invention discloses a laser catheter 6, wherein the connection end of the laser catheter 6 is provided with any one of the optical fiber bundle fixing devices 7. The laser catheter of the utility model uses the optical fiber bundling and fixing device as a connector, can be conveniently connected with a laser device, and because the optical fibers in the laser catheter are not bundled and fixed by adopting an adhesive, the laser catheter can transmit pulse laser with higher peak power and shorter pulse width, is used for ablating and cutting tissues with higher hardness, has lower thermal influence on human tissues around a treatment part, and has smaller damage.

As shown in fig. 8, in another aspect of the present invention, an optical fiber coupling system is disclosed, which includes a laser device and the aforementioned laser catheter 6, the laser device includes a laser 8 and a coupling system 9, the laser 8 is connected to the coupling system 9, and the coupling system 9 is connected to the optical fiber bundle fixing device 7 of the laser catheter. Compared with the prior art, the optical fiber coupling system has better effect and is more convenient to process and assemble.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.

Claims

1. An optical fiber bundling fixing device is characterized by comprising an inserting core and an optical fiber fixing piece, wherein the inserting core is provided with a core channel which runs through the length direction of the inserting core and is used for penetrating an optical fiber bundle, and the outer surface of the inserting core is an arc surface which is formed by rotating around the central line of the length direction of the inserting core and is provided with an opening communicated with the core channel; the optical fiber fixing piece comprises a pressing component, the optical fiber fixing piece is connected with the inserting core, and the pressing component is located at the opening and is provided with a resisting part for resisting the optical fiber bundle tightly.

2. The optical fiber bundle fixing device according to claim 1, wherein a first connecting structure extending along a circumferential direction of the ferrule is disposed on an outer surface of the ferrule, and the optical fiber fixing member is provided with a second connecting structure, and the second connecting structure is engaged with the first connecting structure to fix the optical fiber fixing member and the ferrule.

3. The optical fiber bundle holding device according to claim 2, wherein the first connecting structure comprises an annular slot and/or a protrusion, and the second connecting structure is provided with an insertion structure matching the slot and/or a groove structure matching the protrusion.

4. The optical fiber bundle fixing device according to claim 2, wherein the second connecting structure is an annular elastic catch having a notch, and the annular elastic catch is caught in the groove-shaped first connecting structure.

5. The optical fiber bundle fixing device according to claim 1, wherein the optical fiber fixing member includes an extension arm that can be bent in a ring shape, and the optical fiber fixing member is fixedly connected to the ferrule through the extension arm.

6. The optical fiber bundle fixing device according to claim 1, wherein the optical fiber fixing member includes an annular body clamped in a circumferential direction of the ferrule, and two cantilever arms extending axially outward from both sides of the annular body, the two cantilever arms constituting the pressing member.

7. The optical fiber bundle holding device according to claim 6, wherein the cantilever is an inclined arm having an end inclined to an axis of the ring-shaped body.

8. The optical fiber bundle fixing device according to claim 1, wherein the connection of the optical fiber fixing member and the ferrule satisfies: the circumferential outer surface of the joint and the outer surface of the inserting core are on the same cylindrical surface.

9. The optical fiber bundle fixing device according to claim 1, further comprising an outer protective sleeve sleeved on an end of the ferrule.

10. The optical fiber bundle holding device according to claim 9, wherein the ferrule end has a stage on which the outer jacket is fitted.

11. A laser catheter characterized in that a connection end of the laser catheter is provided with the optical fiber bundle holding device according to any one of claims 1 to 10.

12. A fiber optic coupling system comprising a laser device and the laser catheter of claim 11, the laser device comprising a laser and a coupling system, the laser coupled to the coupling system, the coupling system coupled to the attachment end of the laser catheter.