CN217907727U

CN217907727U - Photoacoustic imaging system and laser device thereof

Info

Publication number: CN217907727U
Application number: CN202221323318.XU
Authority: CN
Inventors: 陶小会; 杨芳
Original assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Current assignee: Shenzhen Mindray Bio Medical Electronics Co Ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-11-29
Anticipated expiration: 2032-05-30

Abstract

A photoacoustic imaging system and a laser apparatus thereof, the laser apparatus comprising: the shell is provided with a connecting hole; the laser is arranged in the shell; the plug socket is provided with a plug hole and a mounting hole, the plug hole is used for plugging an optical fiber plug, the mounting hole is arranged along the radial direction of the plug hole, and the mounting hole extends to be communicated with the plug hole; and the circuit control assembly comprises a trigger piece and an electric switch, the electric switch is electrically connected with the laser, and the trigger piece is telescopically arranged in the mounting hole. After the optical fiber plug is inserted, the electric switch can be triggered by the trigger piece to close and start the laser, and after the optical fiber plug is pulled out, the electric switch can automatically reset and close the laser; the starting and the closing of the laser are driven by the optical fiber insertion in the process of frequently inserting and pulling the optical fiber, manual operation of a user is not needed, the situation that the user forgets to close the laser after pulling out an optical fiber plug due to negligence is avoided, laser leakage is avoided, and safety of the user and a patient is guaranteed.

Description

Photoacoustic imaging system and laser device thereof

Technical Field

The utility model relates to an external detection device, concretely relates to optoacoustic imaging system and laser device thereof.

Background

The photoacoustic imaging system is a system for emitting laser to a human body and then recovering the laser to image ultrasonic signals generated by the human body, can image the inside of human tissues and can also be used for detecting human vital signs such as blood oxygen and the like.

The core component of the photoacoustic imaging system is a laser device, the laser device is used for emitting laser, and the laser device is connected with the probe through an optical fiber. Because laser device needs the different probe of adaptation, consequently be detachable plug connection between laser device and the optic fibre to the probe use of difference is conveniently changed, also makes things convenient for simultaneously accomodating alone of probe and optic fibre.

In the inspection of the existing photoacoustic imaging system, a user needs to manually start laser after inserting an optical fiber plug, and needs to manually close the laser before pulling out the optical fiber plug, so that the user needs to frequently replace a probe and an optical fiber in operation, the user needs to frequently manually start and close the laser, and if the user forgets to close the laser before replacing, the laser can leak, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In one embodiment, a laser apparatus of a photoacoustic imaging system is provided, comprising:

the optical fiber connector comprises a shell, wherein the shell is provided with a connecting hole which is used for connecting an optical fiber plug;

the laser is arranged in the shell and used for emitting laser, and the connecting hole is positioned on a light path of the laser emitted by the laser;

the plug socket is arranged on the outer side of the shell and provided with a plug hole and a mounting hole, the plug hole is aligned with the emergent end of the light guide channel and used for plugging an optical fiber plug, the mounting hole is arranged along the radial direction of the plug hole, and the mounting hole extends to be communicated with the plug hole; and

the circuit control assembly comprises a trigger piece and an electric switch, the electric switch is installed on the plug socket and is electrically connected with the laser, and the trigger piece is telescopically installed in the installation hole; when an optical fiber plug is inserted, the optical fiber plug pushes the trigger piece to move to be connected with the electric switch, and the electric switch is triggered to be closed to start the laser; when the optical fiber plug is pulled out, the trigger piece resets and is far away from the electric switch, and the electric switch is switched off to turn off the laser.

In one embodiment, the trigger part is connected with a reset part, and when the optical fiber plug is pulled out, the reset part is used for driving the trigger part to reset to be away from the electric switch.

In one embodiment, the trigger is a rod-shaped structure, the reset member is a straight spring, the trigger includes a first end and a second end, the first end of the trigger is used for being inserted into the plug hole, and the second end of the trigger is used for being moved to abut against the electric switch; the trigger piece is provided with a first radial limiting part, the socket is provided with a second radial limiting part, the first limiting part is located between the plug hole and the second limiting part, the straight spring is sleeved on the trigger piece, two ends of the straight spring are respectively connected with the first limiting part and the second limiting part, and the straight spring always applies thrust for the trigger piece to push the light path trigger piece to be inserted into the plug hole.

In one embodiment, the first end of the trigger is provided with an inclined surface facing the outside of the plug hole, and the optical fiber plug pushes the trigger to move through the inclined surface.

In one embodiment, the electrical switch has an activation end, which is arranged towards the activation member, which is adapted to abut against the activation end for activating the electrical switch to close.

In one embodiment, a clamping member is arranged in the plug hole, and the clamping member is used for limiting the optical fiber plug in the plug hole.

In one embodiment, the clamping piece is a protruding structure capable of radially extending and retracting, and the protruding structure is used for clamping a clamping groove in the optical fiber plug.

In one embodiment, a light guide channel is disposed in the housing, the light guide channel includes an incident end and an emergent end, the emergent end is aligned with the connecting hole, and the emergent end is used for connecting an optical fiber plug.

In one embodiment, the mounting hole is arranged vertically/obliquely along a radial direction of the insertion hole.

the optical fiber connector comprises a shell, wherein the shell is provided with a connecting hole, and the connecting hole is used for inserting an optical fiber plug;

the plug socket is arranged on the outer side of the shell and provided with a plug hole, the plug hole is connected with the connecting hole in an aligned mode, and the plug hole is used for plugging an optical fiber plug; and

the circuit control assembly comprises a trigger piece and an electric switch, the electric switch is installed on the plug socket and is electrically connected with the laser, and the trigger piece is electrically connected with the electric switch; when an optical fiber plug is inserted, the optical fiber plug triggers the trigger piece in a contact or non-contact mode, and the electric switch is closed to start the laser; when the optical fiber plug is pulled out, the electric switch is reset and disconnected to turn off the laser.

In one embodiment, the trigger comprises a transmitting end and a receiving end, the transmitting end and the receiving end are respectively installed on two sides of the radial direction of the plug hole, the transmitting end is used for transmitting triggering light, and the receiving end is used for receiving the triggering light; when an optical fiber plug is inserted, the optical fiber plug is positioned between the transmitting end and the receiving end, the receiving end is blocked to receive the triggering light, and the electric switch is triggered to be closed to start the laser; when the optical fiber plug is pulled out, the receiving end receives the trigger light to trigger the electric switch to reset and disconnect the laser.

In one embodiment, two radial sides of the insertion hole are provided with symmetrical grooves or mounting holes, and the transmitting end and the receiving end are mounted in the grooves or the mounting holes.

In one embodiment, the trigger part comprises a swing rod and a contact, a groove is formed in the inserting hole, the swing rod and the contact are installed in the groove, one end of the swing rod is rotatably connected with the inserting seat, one end of the swing rod, which is connected with the inserting seat, is connected with a reset part, and the reset part is used for driving the swing rod to rotate until the swing rod is separated and blocked in the inserting hole; when an optical fiber plug is inserted, the optical fiber plug pushes the swing rod to rotate to be connected with the contact, and the electric switch is triggered to be closed to start the laser; when the optical fiber plug is pulled out, the reset piece drives the swing rod to reset and the contact to separate, and the electric switch is triggered to reset and disconnect to close the laser.

In one embodiment, a photoacoustic imaging system is provided, which comprises a probe, an optical fiber and the laser device, wherein one end of the optical fiber is connected with the probe, one end of the optical fiber, which is far away from the probe, is provided with an optical fiber plug, and the optical fiber plug is used for being detachably connected with the laser device; the optical fiber is used for transmitting the laser emitted by the laser device to the probe, and the probe is used for irradiating the laser to human tissues and recovering ultrasonic waves generated by the action of the laser on the human tissues.

According to the photoacoustic imaging system and the laser device thereof in the embodiment, as the circuit control assembly is installed in the laser device and comprises the trigger piece and the electric switch, the electric switch can be triggered to close to start the laser device through the trigger piece after the optical fiber plug is inserted, and the electric switch can automatically reset to close the laser device after the optical fiber plug is pulled out; in the process of frequently plugging and unplugging the optical fiber, the laser is started and closed by the optical fiber insertion drive, manual operation of a user is not needed, the situation that the user forgets to close the laser after pulling out the optical fiber plug due to negligence is avoided, laser leakage is avoided, and safety of the user and a patient is guaranteed.

Drawings

FIG. 1 is a schematic diagram of a laser apparatus of a photoacoustic imaging system in one embodiment;

FIG. 2 is an axial cross-sectional view of a laser apparatus of a photoacoustic imaging system in one embodiment;

FIG. 3 is an axial cross-sectional view of a laser apparatus of a photoacoustic imaging system in one embodiment;

FIG. 4 is a partial axial cross-sectional view of a laser apparatus of a photoacoustic imaging system in one embodiment;

FIG. 5 is a partial axial cross-sectional view of a laser apparatus of a photoacoustic imaging system in one embodiment;

FIG. 6 is a partial axial cross-sectional view of a laser apparatus of a photoacoustic imaging system in one embodiment;

FIG. 7 is a schematic diagram of a photoacoustic imaging system in one embodiment;

wherein the reference numbers are as follows:

1-shell, 11-connecting hole, 2-laser, 3-socket, 31-socket, 32-mounting hole, 321-first mounting hole, 322-second mounting hole, 33-clamping piece, 34-second limiting part, 4-circuit control component, 41-trigger, 411-first limiting part, 412-inclined plane, 41 a-transmitting end, 41 b-receiving end, 41 c-swing rod, 41 d-contact, 42-electric switch, 421-trigger end, 43-bracket, 44-reset piece, 5-optical fiber plug; 10-probe, 20-optical fiber, 30-laser device.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, one skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" as used herein, unless otherwise specified, include both direct and indirect connections (couplings), and the optical axis refers to the central axis of the laser propagation path.

In one embodiment, a laser device of a photoacoustic imaging system is provided, the laser device is used for emitting laser, the laser emitted by the laser device is used for irradiating human tissues so as to enable the human tissues to generate ultrasonic waves, and the photoacoustic imaging system is used for imaging by recycling the ultrasonic waves. In this embodiment, be equipped with circuit control assembly in the laser device to make the user realize the on-off control of laser device circuit through plug optical fiber plug 5, can avoid the manual control laser device circuit in-process, when extracting optical fiber plug 5, do not in time close laser device, lead to the laser to leak outward, cause the potential safety hazard.

Referring to fig. 1 and fig. 2, in the present embodiment, the laser device mainly includes a housing 1, a laser 2, a socket 3, and a circuit control assembly 4. The housing 1 is provided with an accommodating cavity, the laser 2 is arranged in the accommodating cavity of the housing 1, and the plug socket 3 and the circuit control assembly 4 are arranged outside the housing 1. The laser device is also internally provided with a controller and other components, the controller, the laser 2 and the circuit control assembly 4 form a laser control circuit, and the circuit control assembly 4 controls the on-off of the laser control circuit so as to control the on-off of the laser control circuit and further control the laser 2 to emit laser.

The laser 2 is used for emitting laser, the laser 2 can be a single light source or multiple light sources, the single light source is used for emitting laser of one waveband, the multiple light sources are used for emitting laser of different wavebands, the multiple light sources can simultaneously emit laser of multiple different wavebands, and the laser of one waveband can be switched and independently emitted. The laser 2 adopts a single light source or a multi-light source structure and can be arranged according to the use requirement so as to meet the requirements of carrying out ultrasonic imaging on different tissues or detecting different human body vital signs.

Be equipped with the light guide channel in the casing 1, the light guide channel can be the lens subassembly, also can be optic fibre, and the light guide channel is used for transmitting the laser of 2 launches of laser instrument. The light guide channel comprises an incident end and an emergent end, and the incident end of the light guide channel is connected with the laser 2. The incident end of the light guide channel can be directly butted with the laser 2, and the incident end of the light guide channel can also be connected with the laser 2 through adapters such as optical fibers. The light guide channel can be set to be a linear structure or a bent structure, and the arrangement of the light guide channel is favorable for the layout of parts in the shell 1 so as to realize the compactness and the miniaturization of the laser device. The upper side wall of the shell 1 is provided with a connecting hole 11, the emergent end of the light guide channel is aligned with the connecting hole 11, and the connecting hole 11 is used for being in butt joint with the plug socket 3.

In other embodiments, the housing 1 may not be provided with a light guide channel, the laser 2 is disposed near the connection hole 11, the connection hole 11 is located on the light path of the laser emitted by the laser 2, and the laser 2 can directly irradiate the emitted laser onto the optical fiber plug 5.

Referring to fig. 1, 2 and 3, the plug socket 3 is mounted on the outer side wall of the housing 1, the plug socket 3 has a plug hole 31, the plug hole 31 is aligned with the connection hole 11 on the housing 1 on the same central line, and the plug hole 31 is communicated with the connection hole, so that the optical fiber plug 5 can be inserted into the housing 1 to be connected with the exit end of the light guide channel. The two ends of the plug hole 31 are an inner end surface and an outer end surface. The inner end surface of the plug hole 31 may be butted with the exit end of the light guide channel, the inner end surface of the plug hole 31 may also be axially aligned with the exit end of the light guide channel in a spaced relationship, and the optical axis of the laser emitted from the exit end of the light guide channel is collinear with the center line of the plug hole 31.

When the detection device is used for detection, an optical fiber plug of the optical fiber is inserted into the plug hole 31, the end part of the optical fiber plug 5 is connected with the emergent end of the light guide channel, and the optical fiber is used for transmitting laser to the probe.

In this embodiment, the socket 3 is composed of a plurality of components, and in other embodiments, the socket 3 is an integrated structure, or the socket 3 and the housing 1 are an integrated structure.

The mounting hole 32 is disposed along the radial direction of the insertion hole 31, the mounting hole 32 may be parallel to the radial direction of the insertion hole 31, and the mounting hole 32 may also be disposed obliquely with respect to the radial direction of the insertion hole 31. The mounting hole 32 extends from the outside of the socket 31 to communicate with the socket 31, for example, the mounting hole 32 and the socket 31 may form a T-shaped structure.

In this embodiment, the circuit control assembly 4 may include a trigger 41 and an electric switch 42, the trigger 41 is installed in the installation hole 32, the trigger 41 can move along the installation hole 32 in an axial direction, the electric switch 42 is installed in the housing 1, the electric switch 42 may be installed on the socket 3 through a bracket 43, and the electric switch 42 may also be installed on the inner wall of the housing 1 through the bracket 43.

The electrical switch 42 is a microswitch, the electrical switch 42 has an activation end 421, the activation end 421 is disposed toward the activation member 41, and a preset distance is provided between the electrical switch 42 and the mounting hole 32, so that the activation member 41 can be telescopically moved against the activation end 421 of the electrical switch 42. The trigger end 421 is a resilient structure, and when the trigger end 421 is pressed, the electric switch 42 is closed; when the trigger end 421 is not pressed, the trigger end 421 is reset, and the electric switch 42 is turned off.

In this embodiment, the trigger 41 is a rod-shaped structure, and the length of the trigger 41 is greater than the length of the mounting hole 32. The mounting hole 32 may include a first mounting hole 321 and a second mounting hole 322 connected in series, the second mounting hole 322 is communicated with the insertion hole 31, an inner diameter of the first mounting hole 321 is greater than an inner diameter of the second mounting hole 322, and a first limiting table is formed between the first mounting hole 321 and the second mounting hole 322. The trigger 41 is provided with a first radially protruding limiting portion 411, the first limiting portion 411 is located in the first mounting hole 321, and the outer diameter of the first limiting portion 411 is smaller than the inner diameter of the first mounting hole 321 and larger than the inner diameter of the second mounting hole 322, so that the first limiting portion 411 can move in the first mounting hole 321 and can be limited by the first limiting table.

Be equipped with the spacing portion 34 of second on the socket 3, the apron at second mounting hole tip can be installed to the spacing portion 34 of second, and this apron can be some of support 43, and the apron also can be some on the socket 3, and the centre of apron is equipped with dodges the hole, and the aperture of dodging the hole is less than the internal diameter of first mounting hole 321 for form the spacing platform of second between apron and the first mounting hole 321. The reset piece 44 is installed in the first installation hole 321, the reset piece 44 is a straight spring, the straight spring is sleeved on the trigger piece 41, two ends of the straight spring are respectively connected with the first limiting portion 411 and the second limiting portion 34, and the straight spring is always in a compressed state.

One end of the trigger 41, which is used for being inserted into the plug hole 31, is further provided with an inclined surface 412, the inclined surface 412 faces the outer side of the plug hole 31, that is, the inclined surface 412 faces the direction of laser emission, so that the optical fiber plug 5 abuts against the inclined surface 412 in the process of being inserted into the plug hole 31, the inclined surface 412 divides the axial thrust applied by the optical fiber plug 5 into an axial component and a radial component, and the radial component can push the trigger 41 to exit from the plug hole 31 and simultaneously push the trigger 41 to be connected with the electric switch 42.

In this embodiment, the working principle of the circuit control assembly 4 for preventing laser leakage is as follows:

when the optical fiber plug 5 is pulled out, the triggering piece 41 can be driven by the resetting piece 44, one end of the triggering piece 41 far away from the electric switch 42 is inserted into the plug hole 31, and the triggering piece 41 blocks a path in which the optical fiber plug 5 is inserted; at this time, one end of the trigger 41 close to the electric switch 42 is separated from the trigger end 421 of the electric switch 42, the electric switch 42 is in an initial off state, the laser control circuit is turned off, and the laser 2 is turned off;

when the optical fiber plug 5 is inserted, in the process of inserting the optical fiber plug 5, the end part of the optical fiber plug 5 abuts against the inclined surface of the trigger 41, and with the continued insertion of the optical fiber plug, the optical fiber plug will push the trigger 41 to move axially along the mounting hole 32 until the trigger 41 avoids the plug hole 31, and one end of the trigger 41 close to the electric switch 42 abuts against the trigger end 421; at this moment, the light guide channel is opened, the optical fiber plug 5 is continuously inserted into the emergent end which can be connected with the light guide channel, the optical fiber plug 5 can transmit the laser transmitted by the light guide channel to the probe, meanwhile, the electric switch 42 is closed, the laser control circuit is closed, and the laser 2 is started to emit the laser.

In other embodiments, the end of the trigger 41 for being inserted into the plug hole 31 is provided with a spherical surface or a hemispherical surface structure, the hemispherical surface structure faces the outside of the plug hole 31, the spherical surface or the hemispherical surface structure can also divide the pushing force of the optical fiber plug 5 into an axial component and a radial component, and further, the optical fiber plug 5 can also push the trigger 41 to move telescopically.

In this embodiment, since the circuit control assembly 4 is installed in the laser device, the circuit control assembly 4 may include the trigger 41 and the electric switch 42, after the optical fiber plug 5 is inserted, the electric switch 42 may be triggered to close and start the laser 2 through the trigger 41, and after the optical fiber plug 5 is pulled out, the electric switch 42 may automatically reset and close the laser 2; in the process of frequently plugging and unplugging the optical fiber, the laser 2 is started and closed by the optical fiber insertion drive, manual operation of a user is not needed, the situation that the user forgets to close the laser 2 after pulling out the optical fiber plug 5 due to negligence is avoided, laser leakage is avoided, and safety of the user and a patient is guaranteed.

The utility model provides an in the embodiment, joint spare 33 can also be installed in spliced eye 31, joint spare 33 can be protruding structures such as round pin axle, round pin axle and spring coupling, round pin axle can be relative spliced eye 31 radial flexible removal, be equipped with the draw-in groove that corresponds with joint spare 33 on the optical fiber plug 5, after the spliced eye 31 is inserted to optical fiber plug 5, joint spare 33 will block into in the draw-in groove of optical fiber plug 5, it is spacing to optical fiber plug 5 to form, can avoid deviating from of optical fiber plug 5, and joint spare 33 still is used for spacing optical fiber plug 5 male axial distance, so that optical fiber plug 5 can with the accurate butt joint of exit end of leaded light passageway, so as to avoid optical fiber plug 5 to insert too deeply or too shallowly, and then guarantee the stability of connecting.

In one embodiment, a laser apparatus of a photoacoustic imaging system is provided, and the present laser apparatus differs from the above embodiments in that: in this embodiment, the triggering member 41 may be a photoelectric sensing element, and the triggering member 41 may sense whether the optical fiber plug 5 is inserted in a non-contact manner, which may avoid abrasion of the end portion of the optical fiber plug 5.

Referring to fig. 4, in the present embodiment, the triggering element 41 may include a transmitting end 41a and a receiving end 41b, two sides of the inserting hole 31 are provided with symmetrical grooves or mounting holes, the transmitting end 41a and the receiving end 41b are mounted in the grooves or mounting holes in the inserting hole 31, the transmitting end 41a and the receiving end 41b are arranged oppositely, the transmitting end 41a is used for transmitting the triggering light, and the receiving end 41b is used for receiving the triggering light transmitted by the transmitting end 41 a. The trigger 41 is electrically connected to the electric switch 42 through a cable, the trigger 41 and the electric switch 42 are combined into a photoelectric switch, the electric switch 42 is opened when the trigger 41a receives the trigger light, and the electric switch 42 is closed when the trigger 41a does not receive the trigger light.

when the optical fiber plug 5 is inserted, the optical fiber plug 5 is blocked between the transmitting end 41a and the receiving end 41b, and the receiving end 41b cannot receive trigger light transmitted by the transmitting end 41a, so that the electric switch 42 is closed, the control circuit of the laser device is switched on, and the laser 2 is started to transmit laser;

when the optical fiber plug 5 is pulled out, the optical fiber plug 5 leaves the area between the transmitting end 41a and the receiving end 41b, and when the receiving end 41b receives the trigger light emitted by the transmitting end 41a, the electric switch 42 is switched off, the laser device control circuit is switched off, and the laser 2 is switched off to emit laser.

In this embodiment, the start-up and the closing of laser instrument 2 can be controlled through the plug of optical fiber plug 5 equally, can avoid the outer hourglass of laser, adopt non-contact's mode to detect whether optical fiber plug 5 inserts in spliced eye 31 simultaneously, optical fiber plug 5 need not to contact with trigger 41, has avoided the wearing and tearing of 5 tip of optical fiber plug, is favorable to guaranteeing the stability of 5 optical path connections of optical fiber plug.

In one embodiment, a laser apparatus of a photoacoustic imaging system is provided, and the present laser apparatus differs from the above embodiments in that: in this embodiment, the trigger 41 is a rotating member, and the trigger 41 triggers the on/off of the electric switch 42 by rotating.

Referring to fig. 5 and 6, in this embodiment, the trigger 41 may include a swing rod 41c and a contact 41d, a mounting groove is formed in the insertion hole 31, the swing rod 41c and the contact 41d are mounted in the mounting groove of the insertion hole 31, the swing rod 41c and the contact 41d are conductive structures, one end of the swing rod 41c is rotatably mounted in the mounting groove of the insertion hole 31 through a rotating shaft, the swing rod 41c is connected to a reset piece 44, the reset piece 44 is a torsion spring, and the torsion spring always applies a torque to the swing rod 41c, so that the torsion spring drives the swing rod 41c to block the insertion hole 31 without other external forces. One end of the swing link 41c is rotatably connected to one end of the mounting groove near the outer side, and the contact 41d is mounted at one end of the mounting groove near the inner side, so that the optical fiber plug 5 can push the swing link 41c to rotate to be connected with the contact 41d in the process of being inserted into the plug hole 31.

referring to fig. 5, when the optical fiber plug 5 is inserted, the optical fiber plug 5 pushes the swing link 41c to rotate to connect with the contact 41d, the electric switch 42 is triggered to be closed, the laser device control circuit is switched on, and the laser 2 is started to emit laser;

referring to fig. 6, when the optical fiber plug 5 is pulled out, the optical fiber plug 5 leaves the swing link 41c, the swing link 41c rotates to block in the plugging hole 31 under the action of the torsion spring, and the swing link 41c is separated from the contact 41d, the electric switch 42 is triggered to be turned off, the control circuit of the laser device is turned off, and the laser 2 is turned off to emit laser.

In other embodiments, the triggering element 41 may also be installed between the insertion hole 31 and the exit end of the optical channel, and the triggering element 41 may also block the track where the optical fiber plug 5 is inserted, so that the insertion and extraction of the optical fiber plug 5 can control the on and off of the laser 2.

In this embodiment, the laser 2 can be controlled to be turned on and off by plugging and unplugging the optical fiber plug 5, so that laser leakage can be avoided.

In one embodiment, a photoacoustic imaging system is provided for generating ultrasound waves by laser excitation of human tissue and forming ultrasound images by recovering the ultrasound waves.

Referring to fig. 7, in the present embodiment, the photoacoustic imaging system mainly includes a probe 10, an optical fiber 20, and a laser device 30 in any of the above embodiments. The probe 10 is a photoacoustic probe, the probe 10 is used for emitting laser light to a human body and recovering ultrasonic waves, and the probe 10 can be divided into different probes according to different functions and different structures. One end of the optical fiber 20 is fixedly connected or detachably connected with the probe 10, and the other end of the optical fiber 20 is provided with an optical fiber plug which is used for being plugged with the laser device 30. The laser emitted from the laser device 30 is transmitted to the probe 10 through the optical fiber 20, and the probe 10 irradiates the laser onto the human tissue.

In this embodiment, since the trigger 41 is installed in the laser device 30, it can be ensured that laser does not leak from the inside of the laser device to the outside of the laser device in the process of frequently plugging the optical fiber plug 5 of the optical fiber 20, thereby ensuring the safety of users and patients.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims

1. A laser apparatus of a photoacoustic imaging system, comprising:

the plug socket is arranged on the outer side of the shell and provided with a plug hole and a mounting hole, the plug hole is aligned with the connecting hole and used for plugging an optical fiber plug, the mounting hole is arranged along the radial direction of the plug hole, and the mounting hole extends to be communicated with the plug hole; and

2. The laser apparatus of photoacoustic imaging system of claim 1 wherein a reset is attached to said trigger member, said reset being adapted to drive said trigger member to reset away from said electrical switch when the fiber optic plug is removed.

3. The laser apparatus of photoacoustic imaging system of claim 2 wherein said trigger member is a rod-like structure, said reset member is a straight spring, said trigger member includes a first end and a second end, said first end of said trigger member is adapted to be inserted into said receptacle, and said second end of said trigger member is adapted to be moved against said electrical switch; the trigger piece is provided with a first radial limiting part, the socket is provided with a second radial limiting part, the straight spring is sleeved on the trigger piece, two ends of the straight spring are respectively connected with the first limiting part and the second limiting part, and the straight spring always applies thrust for pushing the light path trigger piece to be inserted into the plug hole to the trigger piece.

4. The laser apparatus of photoacoustic imaging system of claim 3 wherein the first end of the trigger is provided with an inclined surface facing the direction of insertion of the fiber plug into the laser, the fiber plug pushing the trigger to move by the inclined surface.

5. The laser apparatus of photoacoustic imaging system of claim 1 wherein the electrical switch has an activation end disposed toward the trigger, the trigger being configured to abut against the activation end to activate the closing of the electrical switch.

6. The laser apparatus of photoacoustic imaging system of claim 1 wherein a snap-in is disposed in the receptacle, the snap-in being configured to retain the fiber optic plug in the receptacle.

7. The laser device of photoacoustic imaging system of claim 6 wherein the snap-in member is a radially retractable protrusion for snap-in with a snap-in groove on the fiber plug.

8. The laser apparatus of photoacoustic imaging system of claim 1 wherein the housing has a light conducting channel disposed therein, the light conducting channel comprising an entrance end and an exit end, the exit end being aligned with the connection hole, the exit end being adapted to connect to a fiber optic plug.

9. The laser apparatus of photoacoustic imaging system of claim 4 wherein said mounting hole is disposed vertically/obliquely along the radial direction of said insertion hole.

10. A laser apparatus of a photoacoustic imaging system, comprising:

the laser device is arranged in the shell and used for emitting laser, and the connecting hole is positioned on a light path of the laser emitted by the laser device;

the plug socket is arranged on the outer side of the shell and provided with a plug hole, the plug hole is aligned and connected with the connecting hole, and the plug hole is used for plugging an optical fiber plug; and

11. The laser device of the photoacoustic imaging system of claim 10 wherein the trigger comprises an emitting end and a receiving end, the emitting end and the receiving end are respectively installed at two sides of the radial direction of the insertion hole, the emitting end is used for emitting the trigger light, and the receiving end is used for receiving the trigger light; when an optical fiber plug is inserted, the optical fiber plug is positioned between the transmitting end and the receiving end, the receiving end is blocked to receive the triggering light, and the electric switch is triggered to be closed to start the laser; when the optical fiber plug is pulled out, the receiving end receives the trigger light, and triggers the electric switch to reset and disconnect the laser.

12. The laser apparatus of photoacoustic imaging system of claim 11 wherein the radial sides of the insertion hole are provided with symmetrical grooves or mounting holes, and the transmitting end and the receiving end are mounted in the grooves or mounting holes.

13. The laser device of the photoacoustic imaging system of claim 10 wherein the trigger comprises a swing link and a contact, the receptacle has a recess therein, the swing link and the contact are mounted in the recess, one end of the swing link is rotatably connected to the receptacle, and the other end of the swing link connected to the receptacle is connected to the reset element for driving the swing link to rotate to block the swing link in the receptacle; when an optical fiber plug is inserted, the optical fiber plug pushes the swing rod to rotate to be connected with the contact, and the electric switch is triggered to be closed to start the laser; when the optical fiber plug is pulled out, the reset piece drives the swing rod to reset and the contact to separate, and the electric switch is triggered to reset and disconnect to close the laser.

14. The laser apparatus of photoacoustic imaging system of claim 10 wherein the housing has a light conducting channel disposed therein, the light conducting channel comprising an entrance end and an exit end, the exit end being aligned with the connection hole, the exit end being adapted to connect to a fiber optic plug.

15. A laser apparatus of a photoacoustic imaging system, comprising:

the plug socket is connected with the shell and provided with a plug hole, the plug hole is aligned and connected with the connecting hole, and the plug hole is used for plugging an optical fiber plug; and

16. The laser apparatus of photoacoustic imaging system of claim 15 wherein the docking station is fixedly attached to the housing or is integrally formed therewith.

17. A photoacoustic imaging system comprising a probe, an optical fiber and a laser device according to any one of claims 1 to 16, the optical fiber being connected at one end to the probe and having a fiber plug at an end remote from the probe, the fiber plug being adapted to be detachably connected to the laser device; the optical fiber is used for transmitting the laser emitted by the laser device to the probe, and the probe is used for irradiating the laser to human tissues and recovering ultrasonic waves generated by the action of the laser on the human tissues.