CN114569277B - Contact type laser cutting device - Google Patents
Contact type laser cutting device Download PDFInfo
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- CN114569277B CN114569277B CN202210260420.8A CN202210260420A CN114569277B CN 114569277 B CN114569277 B CN 114569277B CN 202210260420 A CN202210260420 A CN 202210260420A CN 114569277 B CN114569277 B CN 114569277B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C19/00—Dental auxiliary appliances
- A61C19/06—Implements for therapeutic treatment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00321—Head or parts thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B2018/2205—Characteristics of fibres
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B2018/225—Features of hand-pieces
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Abstract
The invention provides a contact type laser cutting device. This contact laser cutting device includes laser instrument, handle, optic fibre work point and control circuit, and the optic fibre work point includes mount pad and optic fibre, and optic fibre wears to establish in the mount pad, and follows the mount pad stretches out, and the laser of laser instrument transmission sends through optic fibre, and the one end of keeping away from the handle of mount pad is provided with pressure sensor, and pressure sensor and laser instrument all are connected with the control circuit electricity, and pressure sensor is used for detecting the pressure that optic fibre produced in cutting process to with pressure transmission to control circuit that detects, control circuit adjusts the output of laser instrument according to received pressure. The contact type laser cutting device can automatically adjust the laser output power according to the resistance of the optical fiber in the cutting process, so that the laser output power is matched with the pressure generated by the optical fiber in the cutting process, the cutting efficiency is high, and the treatment time is short.
Description
Technical Field
The invention relates to the technical field of laser cutting, in particular to a contact type laser cutting device.
Background
In the field of oral laser therapy, lasers are used to perform soft tissue surgery, such as cutting the gums, cutting the frenulum, and the like. The principle of laser cutting soft tissue is as follows: the laser therapeutic apparatus transmits laser to the soft tissue to be cut through the working tip, the soft tissue absorbs the energy of the laser irradiated from the working tip, the laser energy is instantly converted into a large amount of heat, the temperature of the soft tissue instantly reaches more than 110 ℃, the soft tissue is instantly vaporized and carbonized, and therefore the cutting effect is achieved, and the principle is also called as the heat effect of the laser. Because the laser directly vaporizes and carbonizes tissues, compared with the traditional scalpel, the scalpel does not bleed basically during laser cutting, has very little pain, has certain functions of diminishing inflammation and sterilizing, and can heal wounds quickly.
The power of cutting laser is preset when all laser therapeutic apparatuses on the market cut, the laser output power in the cutting process is certain, the cutting effect and efficiency are controlled by the experience and the manipulation of doctors, when the experience of doctors is insufficient, the problems that the laser power is set to be overlarge, the irradiation time is overlong, unnecessary thermal injury is caused to oral cavity soft tissues of patients can be caused, or the setting power is overlow, the cutting efficiency is low, the treatment time is overlong and the like can be caused.
Disclosure of Invention
The invention mainly aims to provide a contact type laser cutting device which can automatically adjust the laser output power according to the resistance of an optical fiber in the cutting process, so that the laser output power is adaptive to the pressure generated by the optical fiber in the cutting process, the cutting efficiency is high, and the treatment time is short.
In order to achieve the above object, according to an aspect of the present invention, a contact laser cutting device is provided, which includes a laser, a handle, an optical fiber tip, and a control circuit, where the optical fiber tip includes an installation seat and an optical fiber, the optical fiber is inserted into the installation seat and extends out of the installation seat, laser light emitted from the laser is emitted through the optical fiber, a pressure sensor is disposed at one end of the installation seat away from the handle, the pressure sensor and the laser are both electrically connected to the control circuit, the pressure sensor is configured to detect pressure generated by the optical fiber during cutting, and transmit the detected pressure to the control circuit, and the control circuit adjusts output power of the laser according to the received pressure.
Further, the control circuit is provided with a power upper limit value, and after the output power of the laser reaches the power upper limit value, when the pressure sensor detects that the pressure generated in the cutting process of the optical fiber is increased, the output power of the laser is maintained at the power upper limit value.
Further, the control circuit includes a power setting unit for setting a power upper limit value.
Further, the pressure sensor is an annular pressure sensor and/or the control circuit has a rate setting unit for setting a rate value of the power variation with pressure.
Further, the mounting seat is detachably mounted on the handle.
Further, the tip of handle is provided with installation draw-in groove, and the mount pad joint is spacing in installation draw-in groove, and the mount pad can rotate for the handle.
Furthermore, the inner wall of the mounting clamping groove is provided with an annular groove, a clamp spring is mounted in the annular groove, an annular limiting groove is formed in the outer peripheral wall of the mounting seat, and the clamp spring is clamped in the annular limiting groove.
Furthermore, one end, matched with the handle, of the mounting seat is set to be a step shaft, a first conducting ring is arranged on the end face of the small head end of the step shaft, a second conducting ring is arranged on the end face, connected with the small head end, of the large head end of the step shaft, the first end of the pressure sensor is in conducting connection with the first conducting ring, and the second end of the pressure sensor is in conducting connection with the second conducting ring.
Furthermore, a first contact thimble and a second contact thimble are arranged in the handle, a first end of the first contact thimble is in conductive contact with the first conducting ring, a second end of the first contact thimble is connected with the control circuit through a conducting wire, a first end of the second contact thimble is in conductive contact with the second conducting ring, and a second end of the second contact thimble is connected with the control circuit through a conducting wire.
Further, the end of the handle is provided with an annular gap, the width of the annular gap at the opening is increased progressively, and the installation clamping groove is located on one side of the annular gap away from the laser.
Furthermore, an avoiding groove is formed in the mounting seat, and the optical fiber penetrates through the avoiding groove.
By applying the technical scheme of the invention, the contact type laser cutting device comprises a laser, a handle, an optical fiber working tip and a control circuit, wherein the optical fiber working tip comprises a mounting seat and an optical fiber, the optical fiber penetrates through the mounting seat and extends out of the mounting seat, laser emitted by the laser is emitted through the optical fiber, a pressure sensor is arranged at one end of the mounting seat far away from the handle, the pressure sensor and the laser are both electrically connected with the control circuit, the pressure sensor detects pressure generated by the optical fiber in the cutting process and transmits the detected pressure to the control circuit, and the control circuit adjusts the output power of the laser according to the received pressure. This contact laser cutting device is at the in-process that cuts the soft tissue, can utilize the resistance that the optic fibre of optic fibre work point received at the cutting soft tissue in-process to pressure sensor production pressure, and utilize optic fibre to apply to pressure sensor's pressure and adjust the output of laser instrument, make the moving speed of optic fibre work point and the thickness change of soft tissue all can feed back to control circuit through pressure real-time, and then utilize pressure to adjust the output of laser instrument through control circuit in real time, when receiving pressure great, just increase the output of laser instrument, when receiving pressure less, just reduce the output of laser instrument, make the output of laser instrument can match with the resistance that optic fibre received at the cutting in-process, high cutting efficiency, the treatment time is short, effectively reduce the risk of patient's thermal damage, improve patient's experience.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic structural view of a contact laser cutting apparatus of an embodiment of the present invention;
FIG. 2 is a diagram showing a structure of a handle and a fiber tip of a contact laser cutting apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the structure of the optical fiber tip of the contact laser cutting device according to the embodiment of the present invention;
fig. 4 shows a graph of laser output power versus pressure for a contact laser cutting device according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
1. a laser; 2. a handle; 3. an optical fiber; 4. an optical fiber tip; 5. a control circuit; 6. a mounting base; 7. a pressure sensor; 8. installing a clamping groove; 9. an annular groove; 10. a clamp spring; 11. an annular limiting groove; 12. a first conductive ring; 13. a second conductive ring; 14. a first contact thimble; 15. a second contact thimble; 16. an annular gap; 17. an avoidance groove; 18. soft tissue; 19. and (4) conducting wires.
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
The inventor researches and discovers that a semiconductor laser therapeutic apparatus transmits laser to the tip of an optical fiber working tip through an optical fiber on the optical fiber working tip, the tip is contacted with the surface of soft tissue 18 during cutting, then a laser is started, the soft tissue 18 at the tip of the optical fiber working tip is vaporized and carbonized due to instant high temperature to form a point-shaped gap, at the moment, a doctor moves the optical fiber working tip at a certain speed to form a linear cut, when the optical fiber working tip is moved, if the speed of moving the optical fiber working tip is higher than the speed of vaporizing and carbonizing the soft tissue 18 by the laser, the optical fiber working tip can be prevented from moving due to uncut soft tissue 18, the optical fiber working tip can be bent, pressure can be generated at the joint of the optical fiber and a mounting seat of the working tip, the thickness of the soft tissue 18 is larger, the cutting is slower, the prevention is larger, and the pressure generated at the joint of the mounting seat by the optical fiber is larger.
Referring to fig. 1 to 3 in combination, according to an embodiment of the present invention, a contact laser cutting device includes a laser 1, a handle 2, an optical fiber tip 4 and a control circuit 5, where the optical fiber tip 4 includes a mounting seat 6 and an optical fiber 3, the optical fiber 3 is inserted into the mounting seat 6 and extends out of the mounting seat, laser light emitted by the laser 1 is emitted through the optical fiber 3, a pressure sensor 7 is disposed at one end of the mounting seat 6 away from the handle 2, the pressure sensor 7 and the laser 1 are both electrically connected to the control circuit 5, the pressure sensor 7 is configured to detect pressure generated during cutting of the optical fiber 3 and transmit the detected pressure to the control circuit 5, and the control circuit 5 adjusts output power of the laser 1 according to the received pressure.
The contact type laser cutting device can utilize the optical fiber 3 in the optical fiber working tip 4 to deform due to resistance in the process of cutting the soft tissue 18, generate pressure on the pressure sensor 7, and utilize the pressure applied to the pressure sensor 7 by the optical fiber 3 to adjust the output power of the laser 1, so that the moving speed of the optical fiber working tip 4 and the thickness change of the soft tissue 18 can be fed back to the control circuit 5 in real time through pressure change, further, the output power of the laser 1 is adjusted in real time through the control circuit 5 through pressure change, when the pressure sensor 7 is subjected to larger pressure, the output power of the laser is increased, when the pressure applied to the pressure sensor 7 is smaller, the output power of the laser is reduced, so that the output power of the laser 1 can be matched with the resistance applied to the optical fiber 3 in the cutting process, the cutting efficiency is high, the treatment time is short, the risk of thermal injury of a patient is effectively reduced, and the experience of the patient is improved.
In this embodiment, 3 segmentation settings of optic fibre, all be provided with optic fibre 3 in handle 2 and the mount pad 6, mount pad 6 is connected on handle 2, is located and is provided with lens between optic fibre 3 in handle 2 and the optic fibre 3 that is located mount pad 6, and the laser that laser instrument 1 launched is transmitted from optic fibre 3 in handle 2, adjusts after the lens, jets out through optic fibre 3 in the mount pad 6, cuts the soft tissue.
In this embodiment, since both the moving speed of the optical fiber tip 4 and the thickness change of the soft tissue 18 can affect the optical fiber 3, so that the optical fiber 3 forms pressure on the pressure sensor 7, the pressure change can also reflect the moving speed of the optical fiber tip 4 and the thickness change of the soft tissue 18, for example, when the thickness of the soft tissue 18 is not changed, the moving speed of the optical fiber tip 4 is increased, the bending angle of the optical fiber 3 is increased, the pressure applied to the pressure sensor 7 is increased, at this time, the control circuit 5 correspondingly increases the output power of the laser 1, increases the cutting efficiency of the soft tissue 18, so that the pressure applied to the pressure sensor 7 by the optical fiber 3 is reduced, and the matching between the output power and the moving speed is achieved again; when the moving speed of the optical fiber working tip 4 is constant and the thickness of the soft tissue 18 is increased, the efficiency of cutting the soft tissue 18 by laser is reduced at the moment, the soft tissue 18 which is not cut in time forms resistance on the optical fiber 3, the bending angle of the optical fiber 3 is increased, the pressure applied to the pressure sensor 7 is increased, the output power of the laser 1 is correspondingly increased by the control circuit 5 at the moment, the cutting efficiency on the soft tissue 18 is increased, the pressure applied to the pressure sensor 7 by the optical fiber 3 is reduced, and the matching between the output power and the thickness of the soft tissue 18 is achieved again; when the moving speed of the optical fiber working tip 4 and the thickness of the soft tissue 18 change simultaneously, the output power of the laser 1 can be adjusted in real time in the above manner, so that the output power of the laser 1 can be matched with the moving speed of the optical fiber working tip 4 and the thickness of the soft tissue 18 again.
In one embodiment, the pressure sensor 7 is, for example, a resistance strain gauge, the resistance of the resistance strain gauge changes with the change of the pressure, the microprocessor in the contact laser cutting device acquires the pressure at the optical fiber connection position by detecting the resistance of the resistance strain gauge, the laser power is adjusted according to the pressure, the larger the pressure is, the larger the power is to be output, and conversely, the smaller the pressure is, the smaller the power is to be output.
Through the structure, a doctor can be helped to dynamically adjust the laser power when cutting by using the optical fiber working tip 4, the cutting efficiency tends to be in a stable state, and the risk of thermal injury of a patient is reduced.
In one embodiment, the control circuit 5 is provided with a power upper limit value, and after the output power of the laser 1 reaches the power upper limit value, the pressure sensor 7 detects the pressure increase generated during the cutting process of the optical fiber 3, and the output power of the laser 1 is maintained at the power upper limit value.
The upper limit of power is the maximum output power of the laser during operation, i.e. the power will vary with the pressure, but will not be greater than the set maximum output power. Referring collectively to FIG. 4, a graph of laser output power versus pressure is shown. The maximum output power is set to 4W, and the power increases with increasing pressure, but not more than 4W. The maximum output power is set for improving the safety of laser operation, preventing a user from applying too much force to output too high laser power due to misoperation, generating unnecessary thermal damage to a patient and improving the safety and reliability of the contact type laser cutting device in the using process.
In one embodiment, the control circuit 5 includes a power setting unit for setting the power upper limit value. In this embodiment, the contact laser cutting device may further include a touch display screen, the touch display screen is electrically connected to the power setting unit, and the upper power limit may be set through the touch display screen, so that the upper power limit may be adjusted according to different usage environments of the contact laser cutting device, and the applicability is better.
In one embodiment, the pressure sensor 7 is an annular pressure sensor. Adopt annular pressure sensor for in the contact laser cutting device course of work, no matter fibre 3 is to which direction bending, homoenergetic accuracy detects fibre 3 and applies the pressure to annular pressure sensor, thereby has further removed contact laser cutting device's use restriction, and it is more nimble convenient to use.
In one embodiment the control circuit 5 has a rate setting unit for setting a rate value of the power variation with pressure. The rate of change of power with pressure has the unit W/N, e.g. 5W/N means that for every 1N increase in pressure, the power increases by 5W. Referring to fig. 4 in combination, 3 values of power versus pressure rate are shown. Under the same pressure, the higher the power is, the higher the efficiency of laser cutting is, so the rate value of the power changing along with the pressure indirectly represents the efficiency of laser cutting, the higher the rate value of the power changing along with the pressure is, the higher the cutting efficiency is, and a user can set the rate value of the power changing along with the pressure according to the requirement of the user, so that the pressure adjustment of the laser 1 is more flexible, and the laser can be better matched with the occasion of the contact type laser cutting device.
The handle 2 and the mounting seat 6 can be of an integrated structure or a split structure.
In one embodiment, the mounting seat 6 can be detachably mounted on the handle 2, so that the mounting seat 6 can be conveniently mounted or dismounted from the handle 2, and the replacement and maintenance cost is reduced. The mounting seat 6 can be detachably connected with the handle 2 in a bolt connection mode, can also be detachably connected with the handle 2 in a clamping mode, or can be detachably connected with the handle 2 in other modes.
In one embodiment, the end of the handle 2 is provided with a mounting slot 8, the mounting seat 6 is clamped and limited in the mounting slot 8, and the mounting seat 6 can rotate relative to the handle 2. In this embodiment, mount pad 6 cooperates with 2 joints of handle, can rotate for handle 2 simultaneously again, can improve the use flexibility of mount pad 6, can make mount pad 6 rotate for handle 2 in the use, adjusts the turned angle of mount pad 6, more conveniently operates.
In one embodiment, the tail end of the mounting seat 6 is provided with an annular protrusion, and the annular protrusion is in transition connection with the outer peripheral wall of the mounting seat 6 through an arc-shaped structure, so that an operator can conveniently hold the mounting seat and the mounting seat can be operated more conveniently.
In one embodiment, the inner wall of the mounting clamping groove 8 is provided with an annular groove 9, a clamp spring 10 is mounted in the annular groove 9, an annular limiting groove 11 is arranged on the outer peripheral wall of the mounting seat 6, and the clamp spring 10 is clamped in the annular limiting groove 11. In this embodiment, form plug-in structure between mount pad 6 and the handle 2, the installation is dismantled conveniently, and efficiency is higher.
In one embodiment, the end of the mounting base 6 that is engaged with the handle 2 is configured as a step shaft, the end surface of the small head end of the step shaft is provided with a first conductive ring 12, the end surface of the step shaft that is connected with the large head end and the small head end is provided with a second conductive ring 13, the first end of the pressure sensor 7 is electrically connected with the first conductive ring 12, and the second end of the pressure sensor 7 is electrically connected with the second conductive ring 13.
In this embodiment, the first conductive ring 12 is fixedly connected to the first end of the pressure sensor 7 through a wire 19, and the second conductive ring 13 is fixedly connected to the second end of the pressure sensor 7 through a wire 19, so that the pressure sensor 7 can form a loop with a power supply through the first conductive ring 12 and the second conductive ring 13, and an effective data transmission loop is formed for the pressure sensor 7. Adopt the conducting ring to be connected with pressure sensor 7, can be so that form contact connection between control circuit 5 and the conducting ring, so, even in the use, mount pad 6 rotates for handle 2, and wire 19 that sets up in handle 2 also can be contacted with the conducting ring all the time, carries out effectual data transmission to pressure sensor 7.
In one embodiment, a first contact pin 14 and a second contact pin 15 are disposed in the handle 2, a first end of the first contact pin 14 is in conductive contact with the first conductive ring 12, a second end of the first contact pin 14 is connected to the control circuit 5 through a conductive wire 19, a first end of the second contact pin 15 is in conductive contact with the second conductive ring 13, and a second end of the second contact pin 15 is connected to the control circuit 5 through a conductive wire 19. In this embodiment, the first contact thimble 14 and the second contact thimble 15 are both fixedly disposed in the handle 2 to form a built-in structure, and contact type conduction is formed between the first contact thimble 14 and the conductive ring, rather than conducting in a manner of connecting with the conducting wire 19, so that when the mounting base 6 needs to be detached from the handle 2, the mounting base 6 can be directly pulled out from the handle 2 without being affected by the connection structure of the conductive loop between the control circuit 5 and the pressure sensor 7, and the plugging and unplugging are convenient. When the mounting seat 6 needs to be mounted, the mounting seat 6 can be directly inserted into the handle 2, and when the mounting seat 6 is inserted in place, the first contact thimble 14 is in conductive contact with the first conductive ring 12, and the second contact thimble 15 is in conductive contact with the second conductive ring 13, so as to form a conductive loop without an additional conductive connection relationship. Through foretell mode, can optimize the electrically conductive connection structure between optic fibre tip 4 and the handle 2, avoid electrically conductive connection structure to the influence of installing and removing the structure between optic fibre tip 4 and the handle 2.
In one embodiment, the end of the handle 2 is provided with an annular gap 16, the width of the annular gap 16 at the opening increases, and the mounting slot 8 is located on the side of the annular gap 16 remote from the laser 1. In this embodiment, the annular gap 16 is added at the end of the handle 2 connected with the mounting seat 6, so that the structural strength of the annular peripheral wall where the mounting clamping groove 8 is located can be reduced, the length of the thin-wall section of the annular peripheral wall participating in deformation is increased, the annular peripheral wall where the mounting clamping groove 8 is located is more easily deformed, and the mounting and dismounting difficulty of the mounting seat 6 is reduced. The width of the annular gap 16 at the opening is gradually increased, so that the gap between the opening of the handle 2 in the annular gap 16 and the annular peripheral wall where the mounting clamping groove 8 is located can be further increased, the deformation amount of the annular peripheral wall where the mounting clamping groove 8 is located is increased, and the mounting and dismounting difficulty of the mounting seat 6 is reduced.
In one embodiment, an avoidance groove 17 is provided in the mount 6, and the optical fiber 3 passes through the avoidance groove 17. In this embodiment, by providing the avoiding groove 17 in the mounting seat 6, the contact between the optical fiber 3 and the optical fiber mounting hole on the mounting seat 6 when passing through the mounting seat 6 can be reduced, the mounting resistance of the optical fiber 3 is reduced, and the mounting difficulty of the optical fiber 3 is reduced. Dodge groove 17 and extend along the length direction of mount pad 6, under the condition of the key structure intensity of the installation of other structures in not influencing mount pad 6 and mount pad 6, the volume of dodging groove 17 can be as big as possible to minimize the whole weight of mount pad 6, minimize the contact with mount pad 6 in the optic fibre 3 installation simultaneously, when reducing the installation degree of difficulty of optic fibre 3, improve contact laser cutting device's easy operability.
The contact type laser cutting device provided by the embodiment of the invention is particularly suitable for soft tissue cutting in medical surgical operations.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A contact type laser cutting device is applied to oral cavity laser treatment and is characterized by comprising a laser (1), a handle (2), an optical fiber working tip (4) and a control circuit (5), wherein the optical fiber working tip (4) comprises a mounting seat (6) and an optical fiber (3), the optical fiber (3) penetrates through the mounting seat (6) and extends out of the mounting seat (6), laser emitted by the laser (1) is emitted through the optical fiber (3), a pressure sensor (7) is arranged at one end, away from the handle (2), of the mounting seat (6), the pressure sensor (7) and the laser (1) are both electrically connected with the control circuit (5), the pressure sensor (7) is used for detecting pressure generated by the optical fiber (3) in a cutting process and transmitting the detected pressure to the control circuit (5), and the control circuit (5) adjusts output power of the laser (1) according to the received pressure;
when the pressure is higher, the output power of the laser (1) is increased, and when the pressure is lower, the output power of the laser (1) is reduced; the control circuit (5) is provided with a power upper limit value, and after the output power of the laser (1) reaches the power upper limit value, when the pressure sensor (7) detects that the pressure generated in the cutting process of the optical fiber (3) is increased, the output power of the laser (1) is maintained at the power upper limit value.
2. Contact laser cutting device according to claim 1, characterized in that the control circuit (5) comprises a power setting unit for setting an upper power limit value.
3. Contact laser cutting device according to claim 1, characterized in that the pressure sensor (7) is an annular pressure sensor and/or that the control circuit (5) has a rate setting unit for setting a rate value of the power variation with pressure.
4. Contact laser cutting device according to any one of claims 1 to 3, characterized in that the mounting (6) is detachably mounted on the handle (2).
5. Contact laser cutting device according to claim 4, characterized in that the end of the handle (2) is provided with a mounting slot (8), the mounting seat (6) is clamped and limited in the mounting slot (8), and the mounting seat (6) can rotate relative to the handle (2).
6. The contact type laser cutting device according to claim 5, wherein an annular groove (9) is formed in the inner wall of the mounting clamping groove (8), a clamp spring (10) is mounted in the annular groove (9), an annular limiting groove (11) is formed in the outer peripheral wall of the mounting seat (6), and the clamp spring (10) is clamped in the annular limiting groove (11).
7. The contact type laser cutting device according to claim 4, wherein one end of the mounting seat (6) matched with the handle (2) is provided with a step shaft, a first conductive ring (12) is arranged on the end surface of a small head end of the step shaft, a second conductive ring (13) is arranged on the end surface of the step shaft connected with a large head end and the small head end, a first end of the pressure sensor (7) is electrically connected with the first conductive ring (12), and a second end of the pressure sensor (7) is electrically connected with the second conductive ring (13).
8. The contact type laser cutting device according to claim 7, wherein a first contact thimble (14) and a second contact thimble (15) are disposed in the handle (2), a first end of the first contact thimble (14) is in conductive contact with the first conductive ring (12), a second end of the first contact thimble (14) is connected to the control circuit (5) through a wire, a first end of the second contact thimble (15) is in conductive contact with the second conductive ring (13), and a second end of the second contact thimble (15) is connected to the control circuit (5) through a wire.
9. Contact laser cutting device according to claim 5, characterized in that the end of the handle (2) is provided with an annular gap (16), the width of the annular gap (16) at the opening increases, and the mounting slot (8) is located on the side of the annular gap (16) away from the laser (1).
10. Contact laser cutting device according to any one of claims 1 to 3 and 5 to 9, characterized in that an avoiding groove (17) is provided in the mounting seat (6), the optical fiber (3) passing through the avoiding groove (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| US5360426A (en) * | 1990-10-12 | 1994-11-01 | Carl-Zeiss-Stiftung | Force-controlled contact applicator for laser radiation |
| CN1290353A (en) * | 1997-10-06 | 2001-04-04 | 阿克丘拉斯有限公司 | Methods and apparatus for ablating tissue |
| CN101600400A (en) * | 2006-12-12 | 2009-12-09 | B·D.·泽利克松 | Be used to remove the laser energy device of soft tissue |
| CN215841258U (en) * | 2021-09-08 | 2022-02-18 | 桂林市啄木鸟医疗器械有限公司 | Optical fiber working tip structure for laser therapeutic apparatus and laser therapeutic apparatus |
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| JP4034941B2 (en) * | 2001-02-28 | 2008-01-16 | 株式会社ニデック | Laser therapy device |
| EA027884B1 (en) * | 2009-12-31 | 2017-09-29 | Лазер Абразив Технолоджис, Ллс | Dental surgical laser with feedback mechanisms |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5360426A (en) * | 1990-10-12 | 1994-11-01 | Carl-Zeiss-Stiftung | Force-controlled contact applicator for laser radiation |
| CN1290353A (en) * | 1997-10-06 | 2001-04-04 | 阿克丘拉斯有限公司 | Methods and apparatus for ablating tissue |
| CN101600400A (en) * | 2006-12-12 | 2009-12-09 | B·D.·泽利克松 | Be used to remove the laser energy device of soft tissue |
| CN215841258U (en) * | 2021-09-08 | 2022-02-18 | 桂林市啄木鸟医疗器械有限公司 | Optical fiber working tip structure for laser therapeutic apparatus and laser therapeutic apparatus |
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