Fiber optic bullet for laser drill

Abstract

The present invention discloses a fiber optic bullet for a laser drill, comprising a deformable elastic outer shell and an optical fiber core disposed therein. The optical fiber core is composed of a single bundle of optical fibers or multiple bundles of thin optical fibers connected in parallel, and a concave lens is provided at the front end. The sidewall of the elastic outer shell is provided with a hook structure for suspending sutures. The elastic outer shell is made of a reproducibly deformable elastic material with good biocompatibility and suitable for the human body, preferably a memory metal outer shell. The memory metal outer shell is pre-bent, forming a pre-bent elastic fiber optic bullet suitable for drilling curved holes. The memory metal outer shell can also be straight and cylindrical, suitable for drilling straight holes including through holes and blind holes. The present invention is easy to operate, and can be used with a laser drill to quickly and efficiently launch fiber optic bullets, and can also achieve drilling requirements of different angles and shapes.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device laser drills, in particular to an optical fiber bullet for a laser drill. Background Art

[0002] Laser scalpels, as a treatment alternative to traditional metal knives and high-frequency electrosurgical units, have become the safest, most efficient, and least damaging surgical method available. Drilling is a common method in current laser medical processing, leveraging the collimation properties of lasers to efficiently, safely, and minimize damage by producing straight holes. However, due to the complex environment within the human body, some scenarios require specialized curved hole processing to achieve the desired therapeutic effect.

[0003] Wire anchor technology is currently the standard technique for tissue repair and suturing in clinical practice. Conventional procedures involve first implanting an anchor in the bone tissue, anchoring it in the bone tissue via threads, barbs, or wing-like structures. Then, tissue repair and suturing is performed using sutures pre-threaded through the tail hole of the anchor. However, no matter how the material is improved, the anchor remains a foreign body to the human body. Furthermore, the anchor itself varies in size and has a certain space-occupying effect. There is also the risk of the anchor itself being pulled out of the bone tissue due to insufficient holding force, leading to surgical failure, especially in elderly patients with osteoporosis. In rare clinical emergency situations, when a physician needs to perform tissue repair and suturing during surgery but does not have an anchor ready, or cannot use an anchor due to other reasons such as cost, or when the anchor fails to suturing or even pulls out during surgery, the emergency treatment method is to drill a straight hole in the bone section, pass a needle and thread through the hole, and use the bone beams between the holes to achieve anchoring. Then, tissue repair and suturing can be performed. However, bones often have curved surfaces (bone ends) or columnar surfaces (diaphysis). This creates an acute angle between the straight hole opening and the bone surface, leading to the so-called "turn killer" effect that cuts the suture. This is a temporary, clinically unavoidable alternative and cannot be routinely used for tissue repair and suturing. If a curved hole could be drilled in the bone, the hole wall polished, and the suture inserted into the hole, the suture and the hole opening would not be at an acute angle, preventing the suture from being cut by the "turn killer" effect. This could replace the role of the anchor, allowing the bone beams between the hole entrance and exit to be directly used for anchoring, and then tissue suture repair could be performed with thread.

[0004] However, existing laser drilling devices for medical use primarily focus on drilling straight holes. For example, the laser orthopedic drilling device disclosed in patent application publication number CN111053611A comprises an optical fiber connected to a laser source mounted on a fixture. The fixture also houses a stepper motor, which is operatively coupled to a handle via a lead screw nut. This device is still limited to drilling straight holes, and the angle of the front end cannot be adjusted, allowing only adjustments to the depth of the hole. This disadvantage is that it is still inapplicable to surgical procedures requiring curved holes, resulting in significant limitations. Existing laser drills need to organically integrate the optical fiber with the internal structure of the laser drill to form a coherent structure that can meet various drilling requirements, particularly deep drilling operations deep into hard tissue, such as drilling straight holes (including through holes and blind holes) and curved holes at various angles. Improving the drilling technique, efficiency, and safety is a technical challenge facing existing laser drills. Summary of the Invention

[0005] The purpose of the present invention is to provide a fiber optic bullet for a laser drill, which can be organically combined with the internal structure of the laser drill to form an integral whole, is easy to operate, can launch the fiber optic bullet quickly and efficiently, can achieve drilling requirements of different angles and shapes, and is safe and reliable.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A fiber optic bullet for a laser drill comprises a deformable elastic outer shell and an optical fiber core disposed therein. The optical fiber core is a single bundle of optical fibers or multiple bundles of thin optical fibers connected in parallel. The optical fiber core is encapsulated and integrated within the elastic outer shell, and a concave lens is provided at the front end. The sidewall of the deformable elastic outer shell is provided with a hook structure for suspending a suture.

[0008] The optical fiber inner core is a multifunctional integrated transmission optical fiber inner core that can realize laser energy transmission, feedback, cleaning and cooling, temperature reduction, positioning and polishing.

[0009] Furthermore, the overall structure of the fiber optic bullet is divided into three parts: the fiber optic bullet head, the rod and the adapter. The deformable elastic material outer shell and the optical fiber core placed inside are an overall continuous structure in the entire fiber optic bullet, running through the entire fiber optic bullet head, the rod and the adapter.

[0010] The adapter part of the optical fiber bullet is provided with a water inlet and a water outlet, which can be connected to form a water loop. The gap between the front end and the inner core of the multifunctional integrated transmission optical fiber is connected to realize the optical fiber cleaning, cooling and temperature reduction functions. The rear is connected to the main optical fiber through the adapter to realize laser energy transmission and feedback control.

[0011] A concave lens is provided at the front end of the fiber optic bullet head. Its function is: after the laser is transmitted to the fiber optic bullet head through the inner core of the fiber optic bullet, the concave lens amplifies the working diameter of the laser, so that the working diameter of the fiber optic bullet is larger than the diameter of the inner core of the fiber optic bullet and is the same as or slightly larger than the outer diameter of the fiber optic bullet, so as to ensure that the fiber optic bullet as a whole can enter the bone channel drilled by the fiber optic bullet, so as to achieve the purpose of ablating bone tissue while the laser is moving in the bone tissue, thereby drilling a suitable channel.

[0012] The fiber optic bullet shaft connects the head and the adapter; it has an elastic outer shell that shapes the fiber optic bullet and contains a multifunctional integrated transmission fiber core. This multifunctional integrated transmission fiber core is composed of a single optical fiber bundle or multiple thin optical fibers connected in parallel, and performs multiple functions such as laser energy transmission, feedback, cleaning, cooling, temperature reduction, positioning, and polishing. The elastic outer shell of the fiber optic bullet shaft and the multifunctional integrated transmission fiber core inside are the natural backward extension of the same part of the fiber optic bullet head, and are connected to the adapter behind the shaft.

[0013] The front of the optical fiber bullet adapter is connected to the optical fiber bullet rod, and the rear is provided with an energy conversion device connected to the base in the laser transmitter, and the main optical fiber is connected to the light source through the base adapter; the optical fiber bullet adapter is provided with a water inlet and a water outlet, and the functions of optical fiber cleaning, cooling and temperature reduction are realized by connecting water inlet and outlet.

[0014] The optical fiber is a multifunctional integrated transmission optical fiber capable of gas transmission, detection light transmission, cutting laser transmission, etc. The multifunctional integrated transmission optical fiber comprises an outer cladding, a reflective layer, and a hollow core structure; the outer cladding is located at the outermost layer and is a polymer outer cladding, and the reflective layer is an omnidirectional reflective layer.

[0015] The cross sections of the outer cladding, the reflection layer and the hollow core structure of the multifunctional integrated transmission optical fiber are concentric circles.

[0016] Specifically, the polymer outer cladding of the multifunctional integrated transmission optical fiber is a thermoplastic polymer or a UV-curable resin, and the thickness of the polymer outer cladding is 50-1000 μm.

[0017] Specifically, the omnidirectional reflective layer of the multifunctional integrated transmission optical fiber is a multi-material dielectric reflective structure composed of at least two dielectric materials with different refractive indices, and the thickness of the dielectric reflective structure is 10-100 μm. Preferably, the dielectric materials include a high-refractive index material and a low-refractive index material, the high-refractive index material being glass, and the low-refractive index material being a polymer.

[0018] Specifically, the multi-material dielectric reflection structure of the multifunctional integrated transmission optical fiber is composed of dielectric materials with different refractive indices alternatingly, and the refractive index difference of the dielectric materials with different refractive indices is 0.1-2.0; the single layer thickness of each dielectric material is 0.5-10 μm, and the number of alternating layers is 5-30 layers.

[0019] Specifically, one of the dielectric materials in the multi-material dielectric reflective structure of the multifunctional integrated transmission optical fiber is the material constituting the polymer outer cladding, or one of the dielectric materials in the multi-material dielectric reflective structure and the material constituting the polymer outer cladding have similar thermodynamic properties; and each dielectric material in the multi-material dielectric reflective structure has similar thermodynamic properties. Similar thermodynamic properties refer to a glass transition temperature difference of 50°C, a temperature range overlap within the viscosity range of 10⁴-10⁸ poise, and a refractive index difference between the materials of 0.1-2.0.

[0020] Specifically, the hollow core of the multifunctional integrated transmission optical fiber can realize gas or liquid transmission, and a circulation is formed by connecting the water inlet and outlet water channels of the adapter to achieve the functions of optical fiber cleaning, cooling and temperature reduction. The transmission optical fiber can be an optical fiber bundle integrated by optical fibers of different bands, which can realize the transmission of 2-12μm band laser at <1dB / m.

[0021] The multifunctional integrated transmission optical fiber uses lasers to automatically polish the channel and its opening while simultaneously creating the hole. Leveraging the principle of laser polishing, the channel, entrance hole, and exit hole edges are each polished and ground using a slow, low-power laser burnishing process. This simultaneous polishing of the channel and opening smoothes the hole walls, preventing the rough surfaces of the channel and opening from abrading and cutting the suture, effectively protecting the suture's strength. The optical fiber bullet then removes the suture, attached to its outer wall, from the channel for subsequent tissue repair.

[0022] Preferably, a thin visible light optical fiber can be reserved in the multifunctional integrated transmission optical fiber core of the optical fiber bullet to realize the positioning function during work.

[0023] Furthermore, the deformable elastic outer shell is made of an elastic material with good biocompatibility and is suitable for repeated deformation of the human body, preferably a memory metal outer shell. The memory metal outer shell has the effect of shaping the shape of the optical fiber bullet and can be a fully enclosed, half-enclosed or partially enclosed structure.

[0024] Preferably, the memory metal outer shell is a pre-bent cylindrical structure, housing a multifunctional integrated transmission optical fiber core, forming a pre-bent elastic optical fiber bullet suitable for drilling curved holes. The pre-bent elastic optical fiber bullet achieves bending deformation through the memory metal outer shell, and this bending is resilient.

[0025] Specifically, when the laser drill is a laser suturing gun, because the barrel is straight, after the pre-bent elastic fiber optic bullet exits the muzzle perpendicular to the barrel, it automatically rebounds and recovers its shape. The radius of the pre-bent arc of the fiber optic bullet is the same as the radius of the arc of the upper and lower jaw openings of the laser suturing gun, and the bullet moves about the same center. Thus, after exiting the muzzle, the deformation recovery process of the pre-bent elastic fiber optic bullet is fixed. Regardless of the angle of the upper and lower jaws of the muzzle, the bullet tip will always align with and pass through the through-hole in the upper jaw of the muzzle, thus achieving a clamping and aiming function. Therefore, the upper and lower jaws of the laser suturing gun are simply opened and clamped to the specific area where the hole is to be drilled, and the trigger is pulled. Regardless of the angle of the muzzle opening, the fiber optic bullet will always drill a curved hole and directly reach the through-hole in the upper jaw of the muzzle. The area where the through-hole in the upper jaw is located is the exit point of the fiber optic bullet after drilling, thus achieving a clamping and aiming function.

[0026] The fiber optic bullet can be turned by using a rigid metal sleeve at the tip of the fiber optic bullet, end-face treatment, or tilted output light. Low-loss fiber transmission is achieved by utilizing the photonic bandgap effect or total internal reflection principle. Furthermore, the polymer fiber core material ensures fiber flexibility and low-loss transmission at bend radii greater than 2 cm.

[0027] The memory metal outer shell can also be in a straight cylindrical shape, which is suitable for drilling straight holes. Through the control of depth limit protection, a straight through hole or a blind hole can be drilled.

[0028] Since memory metal has strong plasticity and easy processing characteristics, it can also be easily made into various other cross-sectional shapes, including but not limited to square, rectangle, triangle, oval, peanut shape, and other irregular shapes as needed, forming optical fiber bullet outer casings of different shapes, which are suitable for drilling through holes or blind holes of different cross-sectional shapes.

[0029] The outer shell of the optical fiber bullet is suitable for drilling holes of various diameters by setting different diameters.

[0030] The memory metal can be the inner core and the optical fiber can be surrounded by it, which can also determine the shape of the optical fiber bullet.

[0031] Preferably, the memory metal outer shell and the optical fiber inner core are embedded and packaged in a manner and bonded by resin;

[0032] There are two specific packaging methods: one is to pull the optical fiber core first, and then the memory metal outer shell is two half rings, the optical fiber core is encapsulated inside, glued with resin, and sealed by welding; the other is to pull the optical fiber core first, and the memory metal outer shell is also made. After the optical fiber core is coated with resin, it is inserted into the memory metal outer shell from one end and then encapsulated into one.

[0033] The side wall of the deformable elastic material outer shell is provided with a hook structure for hanging sutures, which is used for carrying sutures in the forward or reverse direction and can be used for tissue repair sutures.

[0034] Furthermore, the hook structure for suspending the suture is a barbed structure set on the side wall of the fiber optic bullet. A groove for the suture is set immediately behind the side wall. The suture is routed in the groove and extends backward to the outside of the drill. After the curved hole is drilled, the suture is simultaneously removed to facilitate subsequent repair and suturing operations.

[0035] Alternatively, the hook structure for suspending the suture can be a reverse-direction wire loop pre-embedded in the sidewall of the fiber-optic bullet, used for reverse threading. The hook is used as follows: after the curved hole is drilled, the wire loop pre-embedded in the sidewall of the fiber-optic bullet is ejected, and the wire loop is pulled out of the body, the suture is threaded, and the loop is reversed and introduced into the hole tunnel for subsequent repair suturing.

[0036] Furthermore, the outer wall of the fiber optic bullet of the present invention is provided with a gear or frosted structure, which can closely engage or fit with the mechanical propulsion part in the laser drill to realize the launch and retraction of the bullet and temporary locking in the middle; the propulsion and retrieval of the fiber optic bullet are both achieved by moving this fixed connection device back and forth; that is, the connection device of the laser drill and the connection device of the fiber optic bullet are linked.

[0037] The use process of the present invention is briefly described as follows:

[0038] For example, when loading a fiber optic bullet, the suture thread must be folded in half and attached to the barbed structure on the bullet's side. The remaining suture thread then flows through the pre-recorded groove on the bullet's outer wall. Once the suture is securely attached, the entire bullet and suture thread are inserted into the barrel through the upper muzzle. A click indicates the bullet is loaded, confirming the connection between the optical fiber portion of the bullet and the optical converter within the gun body. The water circuitry for cleaning, cooling, and maintaining the temperature is also connected to the water circuitry on the converter unit within the gun body. The excess suture thread extends from the upper muzzle of the gun body. Then, by pulling the trigger, the base extends forward and backward, propelling the fiber optic bullet out of the laser muzzle. The laser ablates the tissue while the bullet advances, drilling a suitable hole at the desired location. A thread grabber is then used to capture the suture thread attached to the bullet's side through the hole to proceed with the repair.

[0039] Compared with the prior art, the beneficial effects of the present invention are: providing a deformable elastic fiber optic bullet for use in a laser drill, which is a core component of a laser suture gun, a laser suture hook and other laser drills, and is organically combined with them to form a whole, which is easy to operate, can launch fiber optic bullets quickly and efficiently, and can achieve drilling requirements of different angles and shapes, and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 Schematic diagram of the overall structure of the optical fiber bullet according to an embodiment of the present invention.

[0041] Figure 2 for Figure 1 Schematic diagram of the structure of the intermediate connection part.

[0042] Figure 3 Schematic diagram of the cross-section of the head of the optical fiber bullet 1 in Figure 1.

[0043] Figure 4 The side wall of the optical fiber bullet of the present invention is a hook structure with sutures.

[0044] Figure 5 Another hook structure with sutures on the side wall of the optical fiber bullet of the present invention.

[0045] Figure 6 for Figure 5 Schematic diagram of the middle wire loop popping out.

[0046] In the figure, 01, head, 02, rod, 03, adapter; 031, water inlet, 032, water outlet, 1, memory metal outer shell, 2, optical fiber inner core, 3, concave lens, 4, barb structure, 5, groove, 6, suture, 7, wire loop. DETAILED DESCRIPTION

[0047] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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.

[0048] Example:

[0049] See Figures 1 to 6 A fiber optic bullet for a laser drill consists of a deformable elastic outer shell and an optical fiber core 2 placed inside. The deformable elastic outer shell is a memory metal outer shell 1; the optical fiber core 2 is composed of multiple bundles of thin optical fibers in parallel. The optical fiber core 2 is encapsulated in the memory metal outer shell 1 and integrated into one, and a concave lens 3 is provided at the front end.

[0050] See Figure 1 and Figure 3 The overall structure of the fiber optic bullet is divided into three parts: the head 01, the rod 02 and the adapter 03. The deformable elastic outer shell and the optical fiber core 2 placed inside are an overall continuous structure in the entire fiber optic bullet, running through the head 01, the rod 02 and the adapter 03 of the entire fiber optic bullet.

[0051] The fiber optic bullet's shaft (02) connects the head (01) and the adapter (03). It has an elastic outer shell, which defines the bullet's shape. Inside, a multifunctional, integrated optical fiber core (2) is housed. This core, composed of a single optical fiber or multiple parallel bundles, enables multiple functions, including laser energy transmission, feedback, cleaning, cooling, temperature reduction, positioning, and polishing. The elastic outer shell and the optical fiber core (2) within the shaft (02) are a natural, rearward extension of the same portion of the bullet's head (01), connecting to the adapter (03) at the rear of the shaft (02).

[0052] The front of the adapter part 03 of the optical fiber bullet is connected to the rod part 02 of the optical fiber bullet, and the rear is provided with an energy conversion device connected to the base in the laser transmitter, and the main optical fiber is connected to the light source through the base adapter; the adapter part 03 of the optical fiber bullet is provided with a water inlet 031 and a water outlet 032, and the functions of cleaning, cooling and lowering the temperature of the optical fiber are realized by connecting water in and out.

[0053] The function of the concave lens 3 is as follows: after the laser is transmitted to the head 01 of the optical fiber bullet through the inner core of the optical fiber bullet, the concave lens 3 amplifies the working diameter of the laser, so that the working diameter of the optical fiber bullet is larger than the diameter of the optical fiber inner core and is the same as or slightly larger than the outer diameter of the optical fiber bullet, so as to ensure that the optical fiber bullet as a whole can enter the bone tunnel drilled by the optical fiber bullet, so as to achieve the purpose of ablating the bone tissue while the laser is moving in the bone tissue, thereby drilling a suitable tunnel.

[0054] A thin visible light optical fiber is reserved in the optical fiber bullet to realize the positioning and aiming function during work, which is equivalent to an aiming fiber.

[0055] The memory metal outer shell 1 and the optical fiber inner core 2 are embedded and packaged in a manner and bonded by resin.

[0056] There are two specific packaging methods: one is that the optical fiber core 2 is pulled first, and then the memory metal outer shell 1 is two half rings, the optical fiber core 2 is encapsulated inside, glued with resin, and sealed by welding; the other is that the optical fiber core 2 is pulled first, and the memory metal outer shell 1 is also made. After the optical fiber core 2 is coated with resin, it is inserted into the memory metal outer shell 1 from one end and then packaged into one.

[0057] See Figure 4, the picture shows a hook structure with sutures on the side wall of the fiber optic bullet:

[0058] The sidewalls of the memory metal outer shell 1 are provided with barbed structures 4 for suspending sutures. A groove 5 is then extended backward from the sidewalls to accommodate sutures 6. Sutures 6 are routed through the grooves and extend backwards to the outside of the drill. After the curved hole is drilled, sutures 6 are removed to facilitate subsequent repair and suturing operations.

[0059] See Figure 5 and Figure 6 ,The picture shows another hook structure with sutures on the side wall of the fiber optic bullet, Figure 4 The steel wire loop 7 is embedded in the side wall of the memory metal outer shell 1. Figure 5 Shown is a schematic diagram of the state in which the steel wire loop 7 is ejected when the optical fiber bullet is launched.

[0060] The side wall of the memory metal outer shell 1 is provided with a pre-embedded reverse wire loop 7 for reverse hanging suture 6. The method of use is: after the operation of drilling the curved hole is completed, the wire loop 7 pre-embedded in the memory metal outer shell 1 is ejected, the wire loop 7 is pulled out of the body, the suture 6 is threaded, and the reverse direction is introduced into the hole tunnel, which can also be used for subsequent repair suture operations.

[0061] The outer wall of the fiber optic bullet of the present invention is provided with a gear or frosted structure, which can closely engage or fit with the mechanical part of the laser drill to realize the launch and retraction of the bullet and temporary locking in the middle; the propulsion and recovery of the fiber optic bullet are both achieved by moving this fixed connection device back and forth; that is, the connection device of the laser drill and the connection device of the fiber optic bullet are linked.

[0062] The present invention can be used with sleeves with handles at different angles, the front end of which has a certain angle, or the angle is adjustable, and is controlled by gears or other means such as a laser suture hook, and then used with a drill to realize the operation of drilling curved holes or straight holes.

[0063] When the present invention is applied to a laser drill, such as a laser suture gun, when the fiber optic bullet is ready to be loaded, the fiber optic bullet is first hung with a suture 6, the suture 6 is folded in half and hung on the barb structure 4, and the rear suture 6 is placed in the reserved groove 5 on the outer wall of the fiber optic bullet. After the suture is hung, the entire fiber optic bullet and the suture are inserted into the barrel from the top of the gun.

[0064] When loading the gun, there should be a click sound indicating that the bullet is loaded. At this time, the optical fiber part of the fiber optic bullet is connected to the optical conversion part in the gun body, and the water channel part of the fiber optic bullet for cleaning, cooling and cooling is also connected to the water channel part on the conversion unit in the gun body. The excess part of the stitching 6 extends from the loading port on the upper part of the gun body.

[0065] The present invention provides a deformable elastic fiber optic bullet for use in a laser drill. The bullet is a core component of a laser suturing gun, a laser suturing hook, and other laser drills, and is organically combined with the laser suturing gun to form a whole. The bullet is easy to operate, can launch the fiber optic bullet quickly and efficiently, and can achieve drilling requirements of different angles and shapes in a safe and reliable manner.

[0066] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A fiber optic bullet for a laser drill, characterized in that: The device comprises a deformable elastic outer shell and an optical fiber core placed inside. The optical fiber core is a single bundle of optical fibers or multiple bundles of thin optical fibers connected in parallel. The optical fiber core is encapsulated and integrated into the elastic outer shell, and a concave lens is provided at the front end. The side wall of the deformable elastic outer shell is provided with a hook structure for hanging sutures. The overall structure of the fiber optic bullet is divided into three parts: the fiber optic bullet head, the rod and the adapter. The deformable elastic material outer shell and the optical fiber core placed inside form an integral continuous structure in the entire fiber optic bullet, running through the entire fiber optic bullet head, the rod and the adapter. The deformable elastic material outer shell is a memory metal outer shell.

2. The optical fiber bullet for a laser drill according to claim 1, characterized in that: The memory metal outer shell is in a pre-bent arc cylindrical shape, forming a pre-bent elastic optical fiber bullet suitable for drilling curved holes.

3. The optical fiber bullet for a laser drill according to claim 1, characterized in that: The memory metal outer shell is in a straight cylindrical shape and is suitable for drilling straight holes.

4. The optical fiber bullet for a laser drill according to claim 1, characterized in that: The memory metal outer shell and the optical fiber are embedded and packaged in a manner and bonded by resin.

5. The optical fiber bullet for a laser drill according to claim 1, characterized in that: The hook structure for hanging the suture is a barb structure arranged on the side wall of the optical fiber bullet, and a groove reserved for the suture is extended backward from the side wall.

6. The optical fiber bullet for a laser drill according to claim 1, characterized in that: The hook structure for hanging the suture is a reverse wire loop pre-buried on the side wall of the optical fiber bullet, which is used for reverse threading.

7. The optical fiber bullet for a laser drill according to claim 1, characterized in that: The outer wall of the optical fiber bullet is provided with a gear or a frosted structure, which is closely engaged with the mechanical propulsion part in the laser drill.

8. The optical fiber bullet for a laser drill according to claim 1, characterized in that: The adapter portion of the optical fiber bullet is provided with a water inlet and a water outlet.

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