CN218383396U

CN218383396U - Optical fiber coupling structure, optical fiber coupling seat, optical fiber plug and photoacoustic imaging system

Info

Publication number: CN218383396U
Application number: CN202221329773.0U
Authority: CN
Inventors: 陶小会; 杨芳; 刘福生
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: 2023-01-24
Anticipated expiration: 2032-05-30

Abstract

An optical fiber coupling structure, an optical fiber coupling seat, an optical fiber plug and a photoacoustic imaging system are provided. The optical fiber coupling structure comprises an optical fiber plug and an optical fiber coupling seat. The optical fiber coupling seat is provided with a movably arranged control piece, the control piece is matched with a locking piece of the optical fiber coupling seat, and based on the movement change of the control piece, the locking piece can lock the optical fiber rod on the optical fiber coupling seat and release the optical fiber rod from the optical fiber coupling seat. The operator accessible removes the control to switch the state of locking piece, convenient dismouting optical fiber plug.

Description

Optical fiber coupling structure, optical fiber coupling seat, optical fiber plug and photoacoustic imaging system

Technical Field

The application relates to the field of medical instruments, in particular to an optical fiber coupling structure of a photoacoustic imaging system.

Background

Photoacoustic imaging systems (medical) are mixed-mode bio/medical imaging methods built based on the photoacoustic effect. The core accessory in photoacoustic imaging systems is a laser, which produces light intensity that is harmful to humans when operating. When the optical fiber plug is inserted, the optical fiber plug can play a role in receiving light spots and blocking a light path. If the optical fiber plug loosens in the laser instrument working process, not only can influence the function of laser instrument, can also break the optical fiber head seriously, lead to 4 types of laser to reveal, arouse the potential safety hazard.

In the existing photoacoustic inspection, because the detected positions are different, a user needs to frequently replace a probe and an optical fiber, and an optical fiber coupling device usually adopts a screw pressing and fixing mode, so that the assembly and disassembly are time-consuming and labor-consuming, and the optical fiber coupling device is easy to pull out and fall off to cause potential safety hazards.

SUMMERY OF THE UTILITY MODEL

The application provides an optical fiber coupling structure, optical fiber coupling seat, optical fiber plug and optoacoustic imaging system to improve dismouting convenience.

In view of the above, in an embodiment of the present application, there is provided an optical fiber coupling structure of a photoacoustic imaging system, including:

a fiber optic plug having a fiber optic stem for delivering laser light;

and the optical fiber coupling seat is used for connecting the optical fiber plug and is provided with a matching channel which is arranged in a penetrating way, a locking piece used for locking the optical fiber rod and a control piece used for controlling the locking piece, one end of the optical fiber plug is arranged in the matching channel, the control piece is movably arranged, and the locking piece can lock the optical fiber rod on the optical fiber coupling seat and release the optical fiber rod from the optical fiber coupling seat based on the movement change of the control piece.

In one embodiment, the optical fiber coupling seat has an accommodating cavity for accommodating the locking piece, the locking piece is installed in the accommodating cavity and can move in the accommodating cavity close to and away from the optical fiber rod, and the control piece has a locking position and a releasing position on a moving track;

in the locking position, the control member limits the locking member to move in a direction away from the optical fiber rod, and the locking member can lock the optical fiber rod;

in the release position, the control member releases the lock member, the lock member is movable in a direction away from the optical fiber lever, and the lock member is capable of releasing the optical fiber lever.

In one embodiment, the accommodating cavity is communicated with the matching channel, the accommodating cavity is perpendicular to the optical fiber rod along the radial direction of the optical fiber rod, and the locking piece can approach and depart from the optical fiber rod along the radial direction of the optical fiber rod;

or, the holding cavity is arranged along the radial direction of the optical fiber rod and in an inclined manner with the optical fiber rod, and the locking piece can be close to and far away from the optical fiber rod along the inclined direction.

In one embodiment, the accommodating cavity has a first opening at an end thereof close to the fiber rod, and a portion of the locking member protrudes from the first opening to contact with the fiber rod to achieve locking.

In one embodiment, one end of the accommodating cavity close to the control element is provided with a second opening; in the locking position, the control piece blocks the second opening to limit the locking piece to move in a direction away from the optical fiber rod; in the release position, the control member releases the second opening and the lock member is movable out of the second opening.

In one embodiment, the moving track of the control member is arranged along the axial direction of the optical fiber rod; the control piece is provided with a limiting part and a release cavity, and in the locking position, the limiting part blocks and limits the accommodating cavity so as to prevent the locking piece from moving in the direction away from the optical fiber rod; in the release position, the release cavity is communicated with the accommodating cavity, and the locking piece can move to the release cavity in the direction away from the optical fiber rod to release the optical fiber rod.

In one embodiment, the control member is provided with a limiting part and a releasing cavity which are arranged along the circumferential direction of the optical fiber rod, and the control member can rotate along the circumferential direction of the optical fiber rod; in the locking position, the limiting part blocks and limits the accommodating cavity so as to prevent the locking piece from moving in a direction away from the optical fiber rod; in the release position, the release cavity is communicated with the accommodating cavity, and the locking piece can move to the release cavity in the direction away from the optical fiber rod to release the optical fiber rod.

In one embodiment, the part of the locking piece extending out of the first opening is provided with a small-outside and large-inside convex structure, and the fiber rod is provided with a groove structure matched with the convex structure; in the locking position, the groove structure and the protrusion structure are matched to prevent the optical fiber rod from being pulled out of the matching channel.

In one embodiment, the raised structure has spherical, circular, conical, pyramidal or frustoconical outer walls.

In one embodiment, the locking member is a ball.

In one embodiment, the locking pieces are more than two and distributed around the circumference of the optical fiber rod; the recessed region of the groove structure is disposed annularly around the fiber rod.

In one embodiment, the optical fiber plug comprises a clamping body, the clamping body is fixedly connected with the optical fiber rod, and the groove structure is arranged on the clamping body.

In one embodiment, the optical fiber coupling seat further includes an elastic resetting member, and the elastic resetting member acts on the control member and is used for providing a restoring force for the control member to enable the control member to be reset to the locking position.

In one embodiment, the optical fiber coupling seat comprises a guide seat, the guide seat is provided with a raised guide part, the guide part is provided with a first through hole which is penetrated, the optical fiber rod passes through the first through hole, and the control part is movably sleeved on the guide part so as to realize reciprocating motion along the axial direction of the optical fiber rod; the elastic reset piece is arranged along the axial direction of the optical fiber rod.

In one embodiment, the optical fiber coupling seat includes an inner bushing, the inner bushing is installed in the first through hole, the inner bushing has a second through hole, the second through hole is used as one section of the matching channel, the optical fiber rod passes through the second through hole, and the wall of the second through hole is provided with the accommodating cavity.

In one embodiment, the optical fiber coupling seat comprises a base, the base is provided with a third through hole, the guide seat and the inner bushing are fixedly connected with the base, and the optical fiber rod penetrates through the third through hole.

Based on the above purpose, an embodiment of the present application provides an optical fiber coupling seat of photoacoustic imaging system, including the cooperation passageway that link up the setting, be used for the locking piece of optical fiber pole and be used for controlling the control of locking piece, the cooperation passageway is used for supplying the optical fiber pole to insert, the control activity sets up, the locking piece can be based on the motion change of control, and switch over to be can with the optical fiber pole locking is in structure on the optical fiber coupling seat and switch over to can with the optical fiber pole is followed the structure of releasing on the optical fiber coupling seat.

In one embodiment, the optical fiber coupling seat has an accommodating cavity for accommodating the locking member, the locking member is installed in the accommodating cavity and can move in the accommodating cavity in a direction close to and away from the optical fiber rod, and the control member has a locking position and a releasing position on a moving track;

in the locking position, the control member limits the locking member to move in a direction away from the fiber rod;

in the release position, the control member releases the lock member, which is movable in a direction away from the fiber rod.

or, the accommodating cavity is obliquely arranged with the optical fiber rod along the radial direction of the optical fiber rod, and the locking piece can be close to and far away from the optical fiber rod along the oblique direction.

In one embodiment, one end of the accommodating cavity close to the optical fiber rod is provided with a first opening, and a part of the locking piece extends out of the first opening to be in contact with the optical fiber rod to realize locking; one end of the accommodating cavity close to the control piece is provided with a second opening; in the locking position, the control member blocks the second opening to limit the locking member to move in a direction away from the optical fiber rod; in the release position, the control member releases the second opening and the lock member is movable out of the second opening.

In one embodiment, the control member is provided with a limiting part and a releasing cavity which are arranged along the circumferential direction of the optical fiber rod, and the control member can rotate along the circumferential direction of the optical fiber rod; in the locking position, the limiting part blocks and limits the accommodating cavity so as to prevent the locking piece from moving in a direction away from the optical fiber rod; in the release position, the release cavity is communicated with the accommodating cavity, and the locking piece can move to the release cavity in a direction back to the optical fiber rod to release the optical fiber rod.

In one embodiment, the part of the locking piece extending out of the first opening is provided with a convex structure with a small outer part and a large inner part; in the locking position, the protruding structure is matched with the optical fiber rod to prevent the optical fiber rod from being pulled out of the matching channel.

In one embodiment, the locking member is a ball.

In one embodiment, the number of the locking members is two or more, and the locking members are distributed around the circumference of the matching channel.

In one embodiment, the optical fiber coupling seat further includes an elastic reset element, and the elastic reset element acts on the control element and is used for providing a restoring force for the control element to enable the control element to be reset to the locking position.

In one embodiment, the optical fiber coupling seat comprises a guide seat, the guide seat is provided with a raised guide part, the guide part is provided with a first through hole, the optical fiber rod passes through the first through hole, and the control part is movably sleeved on the guide part so as to realize reciprocating motion along the axial direction of the optical fiber rod; the elastic reset piece is arranged along the axial direction of the optical fiber rod.

Based on above purpose, this application provides a photoacoustic imaging system's optical fiber plug in an embodiment, including the optical fiber plug that is used for transmitting laser and be used for with the optical fiber coupling seat complex joint body, the joint body with optical fiber pole fixed connection, be equipped with on the joint body be used for with the complex groove structure is pegged graft to the optical fiber coupling seat.

In one embodiment, the recessed region of the groove structure is disposed annularly around the fiber rod.

In view of the above, in an embodiment of the present application, there is provided a photoacoustic imaging system including the optical fiber coupling structure of any one of the above, the optical fiber coupling seat of any one of the above, or the optical fiber plug of any one of the above.

The optical fiber coupling structure according to the above embodiment includes an optical fiber plug and an optical fiber coupling seat. The optical fiber coupling seat is provided with a movably arranged control piece, the control piece is matched with a locking piece of the optical fiber coupling seat, and based on the movement change of the control piece, the locking piece can lock the optical fiber rod on the optical fiber coupling seat and release the optical fiber rod from the optical fiber coupling seat. The operator accessible removes the control to switch the state of locking piece, convenient dismouting optical fiber plug.

Drawings

FIG. 1 is an exploded view of an optical fiber coupling structure according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view of an embodiment of a fiber optic plug according to the present application;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present application with a fiber optic plug inserted and unlocked;

FIG. 4 is a cross-sectional view of a fiber optic plug being locked in accordance with an embodiment of the present application.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. Wherein like elements in different embodiments have been given like element numbers associated therewith. 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 description of the methods may be transposed or transposed in order, as will be apparent to a person skilled 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 includes both direct and indirect connections (couplings), unless otherwise specified.

The application provides an optical fiber coupling structure of a photoacoustic imaging system, in particular to a medical photoacoustic imaging system, which is used for acquiring image information of a detection target.

Referring to fig. 1-4, the optical fiber coupling structure includes an optical fiber plug 100 and an optical fiber coupling seat 200.

The fiber optic plug 100 is used to deliver the desired pulsed laser light. The optical fiber plug 100 includes an optical fiber rod 110 for transmitting laser light. The fiber coupling receptacle 200 is used to connect the fiber plug 100 to complete the docking of the fiber rod 110 with the required components to help the fiber rod 110 deliver the pulsed laser to the corresponding components.

Referring to fig. 1 to 4, the fiber coupling seat 200 has a fitting channel (i.e., a channel for inserting the left end of the fiber rod 110 in fig. 1 to 3) disposed therethrough, a locking member 210 for locking the fiber rod 110, and a control member 220 for controlling the locking member 210. One end (the left end as viewed in fig. 1-4) of the fiber optic plug 100 is mounted within the mating passage. The control member 220 is movably disposed, and the locking member 210 can lock the optical fiber rod 110 on the optical fiber coupling receptacle 200 and release the optical fiber rod 110 from the optical fiber coupling receptacle 200 based on the movement change of the control member 220.

The moving track of the control member 220 may be along the axial direction of the illustrated optical fiber rod 110 (i.e. the axial direction of the matching channel, as shown in fig. 2-4), along the radial direction of the optical fiber rod 110, along the circumferential direction of the optical fiber rod 110, or obliquely arranged with respect to the axial direction of the optical fiber rod 110, or along other directions. The movable direction of the control member 220 may be any direction as long as the object can be satisfied because the locking member 210 can be switched between a structure capable of locking the optical fiber rod 110 to the optical fiber coupling receptacle 200 and a structure capable of releasing the optical fiber rod 110 from the optical fiber coupling receptacle 200 based on the change of the movement of the control member 220.

The locking member 210 changes based on the movement of the control member 220, which means that the movement of the control member 220 can directly or indirectly cause the locking state of the locking member 210 to change relative to the optical fiber rod 110, and the locking state change of the locking member 210 may be a structural change of the locking member 210 itself, a change in the size of the movement space of the locking member 210, or other changes as long as the locking and unlocking states of the locking member 210 to the optical fiber rod 110 can be switched. The control member 220 can control the change of the locking member 210 by interlocking or signal coupling with the structure of the locking member 210, and can also control the change of the locking member 210 by blocking and releasing the motion path of the locking member 210 (as shown in fig. 1-3), and of course, the control member can also achieve the purpose by other structures.

For example, in one embodiment, referring to FIG. 2, when the fiber rod 110 is inserted, the fiber rod 110 is not locked by the locking member 210. Referring to fig. 3, at this time, the control member 220 changes position to the left along the axial direction, the locking member 210 is released, and when the optical fiber rod 110 is inserted, the locking member 210 is clamped onto the optical fiber plug 100, and at this time, the locking member 210 is in a movable state. Referring to fig. 4, at this time, the control member 220 is shifted to the right along the axial direction, the locking member 210 is restricted from moving, and the fiber rod 110 is immediately locked and cannot be taken out along the axial direction, so as to prevent falling. When the fiber rod 110 needs to be disassembled, the reverse operation is performed from fig. 4, 3 and 2.

Wherein movement of the control member 220 may be manually actuated by an operator; the drive may be provided by a power source such as a motor, and the control may be performed by an operator in a wireless or wired manner.

Referring to fig. 1-4 again, the movement path of the control member 220 for blocking and releasing the locking member 210 is further illustrated. In this embodiment, the fiber coupling receptacle 200 has a receiving cavity 231 for receiving the locking member 210. The locking member 210 is installed in the receiving chamber 231, and the receiving chamber 231 has a larger space than the locking member 210, so that the locking member 210 can move in the receiving chamber 231. The movement may specifically be able to move within the receiving cavity 231 towards and away from the fiber rod 110. The control member 220 has a locking position and a releasing position on its moving path. In the locked position, the control member 220 limits the movement of the locking member 210 away from the fiber rod 110, and the locking member 210 can lock the fiber rod 110. In the release position, the control member 220 releases the locking member 210, the locking member 210 is able to move away from the fiber lever 110, and the locking member 210 is able to release the fiber lever 110. The locking position and the unlocking position may be a certain position or a section of area, that is, the control member 220 is located in the area, and both may be considered to be in the locking position or the unlocking position.

Referring to fig. 2-4, wherein the control member 220 is in the locked position in fig. 2 and 4, the control member 220 is in the unlocked position in fig. 3. In fig. 2, when the fiber rod 110 is not completely inserted into the mating channel, the control member 220 can be kept in the locking position (or can be kept in the unlocking position), and the locking member 210 cannot move away from the fiber rod 110. The operator can move the control member 220, for example, as shown in FIG. 3, to move the control member 220 axially to the left along the fiber rod 110, at which time the control member 220 is in the unlocked position and the locking member 210 is released. When the fiber rod 110 is inserted, the locking member 210 interacts with the locking member 210, and pushes the locking member 210 to move back away from the fiber rod 110, and then forms a limit fit with a fitting structure (e.g., a groove structure) of the fiber rod 110 under the gravity or the pushing force of the following control member 220 (as shown in fig. 4). Referring to fig. 4, when the control member 220 moves to the locking position along the axial direction of the optical fiber rod 110, the locking member 210 is restricted from moving, and the optical fiber rod 110 is locked immediately and cannot be taken out along the axial direction, so as to prevent the optical fiber rod from falling. The fiber rod 110 can be removed by reversing the operation.

Of course, fig. 2-4 only show an example of the control member 220 blocking and releasing the movement path of the locking member 210, and the control member 220 can control the locking member 210 in other ways.

Further, in the embodiment shown in fig. 1 to 4, the accommodating cavity 231 is communicated with the matching channel, the accommodating cavity 231 is perpendicular to the fiber rod 110 along the radial direction of the fiber rod 110, and the locking member 210 can vertically approach and depart from the fiber rod 110 along the radial direction of the fiber rod 110. In other embodiments, the accommodating cavity 231 may be inclined from the fiber rod 110 along a radial direction of the fiber rod 110, and the locking member 210 can approach and depart from the fiber rod 110 along the inclined direction. Alternatively, the receiving cavity 231 may extend in other directions to allow the locking member 210 to move toward and away from the fiber rod 110 in other directions.

Referring to fig. 1-4, one end of the accommodating cavity 231 near the fiber rod 110 has a first opening, and a portion of the locking member 210 extends out of the first opening to contact with the fiber rod 110, so as to achieve locking. In the embodiment shown in fig. 1-4, the portion of the locking member 210 extending out of the first opening has a convex structure with a small outer portion and a large inner portion, and the fiber rod 110 has a groove structure 121 matching the convex structure. The outer dimension is smaller than the dimension of the other regions of the protruding portion on the locking member 210 facing the fiber rod 110, and typical examples include the outer wall of the protruding structure having a spherical shape, a circular arc shape, a conical shape, a pyramid shape, a truncated cone shape or other shapes. Accordingly, the groove structure 121 of the fiber rod 110 may also have a corresponding structure with a large outer portion and a small inner portion, such as a V-shaped groove or a U-shaped groove.

In the locked position, the groove structure 121 and the protrusion structure cooperate to prevent the fiber rod 110 from being pulled out of the mating channel. This protruding structure and groove structure 121 realize along the axial spacing of fiber rod 110 through the cooperation of pegging graft, prevent that fiber rod 110 from droing from the cooperation passageway, and the big shape in this protruding structure's the outer little still plays the guide effect moreover to make locking piece 210 fall into to groove structure 121 more easily, also more easily when dismantling, break away from with groove structure 121.

Specifically, in the figures, the locking member 210 is a ball. The ball structure enables the locking member 210 to rotate in the receiving cavity 231, and thus, the locking member can be easily engaged with and disengaged from the fiber rod 110. The protrusion of the ball from the first opening has a spherical outer wall that better fits into the groove 121 of the fiber rod 110. In other embodiments, the locking member 210 may also have a long cylindrical shape or other shapes with a convex structure such as a circular arc.

Of course, in addition to the protrusion engaging the groove 121, the locking member 210 and the fiber rod 110 may also have other types of engaging structures, and may also have other non-engaging structures, such as a static friction engaging structure.

Further, referring to fig. 1-4, one end of the accommodating cavity 231 near the control element 220 has a second opening; in the locking position, the control member 220 blocks the second opening to limit the locking member 210 from moving away from the fiber rod 110; in the release position, the control member 220 releases the second opening and the lockout member 210 is able to move out of the second opening.

Specifically, referring to fig. 2-4, in this embodiment, the movable track of the control member 220 is disposed along the axial direction of the optical fiber rod 110, and the control member 220 is a sleeve structure. The control member 220 has a stopper portion 221 and a release cavity 222. In the locking position, the limiting part 221 blocks the limiting accommodating cavity 231 to prevent the locking piece 210 from moving in a direction away from the fiber rod 110; in the release position, the release cavity 222 is communicated with the accommodating cavity 231, and the locking member 210 can move to the release cavity 222 in a direction away from the fiber rod 110 to release the fiber rod 110. The releasing cavity 222 is a concave structure, and forms a larger cavity after communicating with the accommodating cavity 231, so that the movement space of the locking member 210 is enlarged, and the locking member 210 can move away from the fiber rod 110. The limiting portion 221, which mainly serves the purpose of limiting the movement of the locking member 210 away from the fiber rod 110, may have various shapes, such as a flat surface as shown in the figure or other shapes. The spacing part 221 and the releasing cavity 222 can be transited through a slope 223 to form a guide surface for guiding. Especially, when the control member 220 moves from the releasing position to the locking position, the limiting portion 221 is beneficial to pressing the locking member 210 back into the accommodating cavity 231, and the locking member 210 is prevented from being clamped at the joint of the limiting portion 221 and the releasing cavity 222, so that the structure is locked, and the locking member 210 cannot lock the optical fiber rod 110.

In addition, the moving track of the control member 220 is not necessarily the axial direction of the fiber rod 110, and may be in other directions. For example, in one embodiment, the control member 220 has a retention portion 221 and a release cavity 222 disposed circumferentially along the fiber rod 110. The spacing portion 221 and the release chamber 222 may be one or more. The control member 220 can rotate along the circumference of the optical fiber rod 110, and the position of the control member 220 matched with the accommodating cavity 231 can be adjusted by rotating the control member 220, so that the accommodating cavity 231 of the limiting part 221 is aligned or the releasing cavity 222 is aligned with the accommodating cavity 231.

In the locking position, the limiting portion 221 blocks the limiting accommodating cavity 231 to prevent the locking member 210 from moving in a direction away from the fiber rod 110; in the release position, the release cavity 222 is communicated with the accommodating cavity 231, and the locking member 210 can move to the release cavity 222 in a direction away from the fiber rod 110 to release the fiber rod 110.

The number of the locking members 210 may be one or more. Referring to fig. 1-4, in one embodiment, the number of the locking members 210 is two or more, and the locking members are distributed around the circumference of the fiber rod 110. Preferably, the locking members 210 are spaced at the same angle and are evenly distributed around the circumference of the fiber rod 110 to provide a more uniform point of application and maintain the stability and reliability of the connection.

Referring to fig. 1, in one embodiment, to facilitate the engagement with the locking member 210, the recessed area of the groove structure 121 is disposed in a ring around the fiber rod 110. Any position of the recessed area on the annular groove structure 121 can be matched with the locking member 210, so that it is not necessary to perform too precise alignment, and the difficulty of operation is reduced. Of course, in other embodiments, the plurality of groove structures 121 may be divided into a multi-point scattering distribution structure, and the groove structures 121 at each position are aligned with the corresponding control member 220.

Further, the groove structure 121 can be designed to be opened on the fiber rod 110, i.e. both can be an integral structure. The groove structure 121 may also be provided on other components fixedly connected to the fiber rod 110. For example, referring to fig. 1-4, in one embodiment, the optical fiber plug 100 includes a clamping body 120, the clamping body 120 is fixedly connected to the optical fiber rod 110, and the groove structure 121 is disposed on the clamping body 120.

Further, in order to realize the automatic reset of the control member 220, the fiber rod 110 is more convenient to assemble and disassemble. Referring to fig. 1-4, in one embodiment, the optical fiber coupling receptacle 200 further includes an elastic restoring member 240, and the elastic restoring member 240 acts on the control member 220 to provide a restoring force to the control member 220 to restore the control member 220 to the locking position (or the unlocking position). The elastic restoring member 240 may be, but is not limited to, a spring plate, a torsion spring, or other elastic members. The elastic restoring member 240 may be directly connected to the control member 220, or may be indirectly connected to the control member 220 through other components, as long as the elastic restoring force of the elastic restoring member 240 can act on the control member 220. Under the action of the elastic restoring member 240, when the external force applied to the control member 220 by the operator is removed, the control member 220 will automatically return to the latching position, which blocks the protrusion of the latching member 210 from the second opening of the accommodating chamber 231.

In fig. 2-4, the elastic restoring member 240 is disposed along the axial direction of the optical fiber rod 110, and may be disposed on the optical fiber rod 110, or disposed on one or more sides of the optical fiber rod 110 in parallel. In addition, the elastic restoring member 240 may be disposed in other directions according to the movement trace of the control member 220.

Of course, in some embodiments, the resilient return element 240 may be omitted. The movement of the control member 220 between the locked position and the unlocked position is achieved by an external force applied by an operator or a driving unit such as a motor. If the control member 220 is required to be kept in the locking position or the unlocking position, the locking can be performed by adding a corresponding detachable locking structure (such as a clamping structure and the like).

Further, referring to fig. 1-4, in one embodiment, in order to better control the motion trajectory of the control member 220, the fiber coupling seat 200 includes a guide seat 250. The guide holder 250 has a guide portion 251 protruded, and the guide portion 251 extends in the same direction as the optical fiber rod 110. The control member 220 is movably sleeved on the guide portion 251 and can slide relative to the guide portion 251 to realize the reciprocating motion along the axial direction of the optical fiber rod 110. The guide portion 251 also guides the control member 220. The guide portion 251 has a first through hole 252 therethrough, and the fiber rod 110 passes through the first through hole 252.

Further, referring to fig. 1-4, in one embodiment, to install the locking member 210, the fiber coupling seat 200 further includes an inner bushing 230. The inner sleeve 230 is mounted in the first through hole 252, the inner sleeve 230 has a second through hole 233, the second through hole 233 serves as one of the segments of the fitting passage, and the optical fiber rod 110 passes through the second through hole 233. The hole wall of the second through hole 233 is provided with a receiving cavity 231, and the control member 220 is located in the receiving cavity 231. When the optical fiber plug 100 has the engaging member 120, a cavity 232 for accommodating the engaging member 120 can be further disposed in the second through hole 233.

Of course, in some embodiments, the inner sleeve 230 may be omitted, and the locking member 210 may be mounted on other components of the fiber coupling seat 200, such as the guide portion 251 in the figure is elongated, and the receiving cavity 231 is disposed on the guide portion 251.

Further, referring to fig. 1-4, in one embodiment, the fiber coupling base 200 further includes a base 260. The base 260 has a third through hole 261, the guide holder 250 and the inner sleeve 230 are fixedly connected to the base 260, and the optical fiber rod 110 passes through the third through hole 261. The base 260 and the guide seat 250 may be integrally formed, or may be two different parts. With regard to the other structures of the fiber coupling seat 200 except for the guide seat 250, the base 260 and the inner bushing 230, reference may be made to the prior art, and no further description is provided herein.

Taking the embodiment shown in fig. 1-4 as an example, the structure can realize quick locking-unlocking of the optical fiber plug 100, improve the working efficiency, give better operation experience to users, and improve the safety because the optical fiber plug 100 cannot be loosened after being locked.

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. An optical fiber coupling structure of a photoacoustic imaging system, comprising:

a fiber optic plug having a fiber optic stem for delivering laser light;

2. The optical fiber coupling structure according to claim 1, wherein the optical fiber coupling seat has a receiving cavity for receiving the locking member, the locking member is mounted in the receiving cavity and can move in the receiving cavity close to and away from the optical fiber rod, and the control member has a locking position and a releasing position on a moving track;

3. The optical fiber coupling structure according to claim 2, wherein the receiving cavity communicates with the mating channel, the receiving cavity is perpendicular to the optical fiber rod along a radial direction of the optical fiber rod, and the locking member is capable of approaching and departing from the optical fiber rod along the radial direction of the optical fiber rod;

4. The fiber coupling structure of claim 3, wherein the receiving cavity has a first opening at an end thereof adjacent to the fiber rod, and a portion of the locking member extends from the first opening to contact the fiber rod for locking.

5. The optical fiber coupling structure of claim 3, wherein an end of the receiving cavity adjacent to the control member has a second opening; in the locking position, the control piece blocks the second opening to limit the locking piece to move in a direction away from the optical fiber rod; in the release position, the control member releases the second opening and the lock member is movable out of the second opening.

6. The optical fiber coupling structure according to claim 5, wherein the movable track of the control member is disposed along an axial direction of the optical fiber rod; the control piece is provided with a limiting part and a releasing cavity, and the limiting part blocks and limits the accommodating cavity at the locking position so as to prevent the locking piece from moving in the direction away from the optical fiber rod; in the release position, the release cavity is communicated with the accommodating cavity, and the locking piece can move to the release cavity in the direction away from the optical fiber rod to release the optical fiber rod.

7. The optical fiber coupling structure according to claim 5, wherein the control member has a stopper portion and a release cavity provided along a circumferential direction of the optical fiber rod, the control member being rotatable along the circumferential direction of the optical fiber rod; in the locking position, the limiting part blocks and limits the accommodating cavity so as to prevent the locking piece from moving in a direction away from the optical fiber rod; in the release position, the release cavity is communicated with the accommodating cavity, and the locking piece can move to the release cavity in the direction away from the optical fiber rod to release the optical fiber rod.

8. The fiber coupling structure of claim 4, wherein the portion of the locking member extending out of the first opening has a convex structure with a smaller outer portion and a larger inner portion, and the fiber rod has a concave structure matching the convex structure; in the locking position, the groove structure and the protrusion structure are matched to prevent the optical fiber rod from being pulled out of the matching channel.

9. The fiber coupling structure of claim 8, wherein the raised structures have spherical, rounded, conical, pyramidal, or frustoconical outer walls.

10. The fiber coupling structure of claim 8, wherein the locking member is a sphere.

11. The fiber coupling structure of claim 8, wherein the locking members are two or more and are distributed around the circumference of the fiber rod; the recessed region of the groove structure is disposed annularly around the fiber rod.

12. The optical fiber coupling structure of claim 8, wherein the optical fiber plug comprises a clamping body, the clamping body is fixedly connected with the optical fiber rod, and the groove structure is disposed on the clamping body.

13. The fiber coupling structure according to any one of claims 2-12, wherein the fiber coupling receptacle further comprises an elastic return member acting on the control member for providing a return force to the control member that urges the control member to return to the locked position.

14. The optical fiber coupling structure according to claim 13, wherein the optical fiber coupling seat comprises a guide seat, the guide seat has a raised guide portion, the guide portion has a first through hole therethrough, the optical fiber rod passes through the first through hole, and the control member is movably fitted over the guide portion to achieve a reciprocating motion along an axial direction of the optical fiber rod; the elastic reset piece is arranged along the axial direction of the optical fiber rod.

15. The optical fiber coupling structure according to claim 14, wherein the optical fiber coupling seat includes an inner bushing, the inner bushing is installed in the first through hole, the inner bushing has a second through hole, the second through hole is used as one section of the matching channel, the optical fiber rod passes through the second through hole, and the wall of the second through hole is provided with the accommodating cavity.

16. The fiber coupling structure of claim 15, wherein the fiber coupling seat includes a base having a third through hole, the guide seat and the inner bushing are fixedly connected to the base, and the fiber rod passes through the third through hole.

17. The utility model provides a optoacoustic imaging system's fiber coupling seat, characterized in that, including the cooperation passageway that link up the setting, be used for locking the locking piece of optic fibre pole and be used for controlling the control piece of locking piece, the cooperation passageway is used for supplying the optic fibre pole inserts, the control piece activity sets up, the locking piece can be based on the motion change of control piece, and switch to can be with optic fibre pole locking is in structure on the fiber coupling seat and switch to can be with the optic fibre pole is followed the structure that releases on the fiber coupling seat.

18. The optical fiber coupling seat according to claim 17, wherein the optical fiber coupling seat has a receiving cavity for receiving the locking member, the locking member is mounted in the receiving cavity and can move in the receiving cavity toward and away from the optical fiber rod, and the control member has a locking position and a releasing position on a moving track;

19. The optical fiber coupling seat according to claim 18, wherein the receiving cavity communicates with the mating channel, the receiving cavity is perpendicular to the optical fiber rod along a radial direction of the optical fiber rod, and the locking member is capable of approaching and departing from the optical fiber rod along the radial direction of the optical fiber rod;

20. The fiber optic coupling receptacle of claim 19, wherein the receiving cavity has a first opening at an end thereof adjacent the fiber rod, and a portion of the locking member extends from the first opening to contact the fiber rod for locking; one end of the accommodating cavity close to the control piece is provided with a second opening; in the locking position, the control piece blocks the second opening to limit the locking piece to move in a direction away from the optical fiber rod; in the release position, the control member releases the second opening and the locking member is movable out of the second opening.

21. The fiber coupling seat according to claim 20, wherein the movable track of the control member is disposed along an axial direction of the fiber rod; the control piece is provided with a limiting part and a release cavity, and in the locking position, the limiting part blocks and limits the accommodating cavity so as to prevent the locking piece from moving in the direction away from the optical fiber rod; in the release position, the release cavity is communicated with the accommodating cavity, and the locking piece can move to the release cavity in a direction back to the optical fiber rod to release the optical fiber rod.

22. The fiber coupling holder according to claim 20, wherein the control member has a stopper portion and a release cavity provided along a circumferential direction of the fiber rod, the control member being rotatable along the circumferential direction of the fiber rod; at the locking position, the limiting part blocks and limits the accommodating cavity so as to prevent the locking piece from moving in the direction away from the optical fiber rod; in the release position, the release cavity is communicated with the accommodating cavity, and the locking piece can move to the release cavity in the direction away from the optical fiber rod to release the optical fiber rod.

23. The fiber coupling receptacle of claim 20, wherein the portion of the locking member protruding out of the first opening has a convex structure with a small outside and a large inside; in the locking position, the protruding structure is matched with the optical fiber rod to prevent the optical fiber rod from being pulled out of the matching channel.

24. The fiber coupling receptacle of claim 20, wherein the locking member is a ball.

25. The fiber coupling receptacle of claim 18, wherein the locking members are two or more and are distributed around a circumference of the mating channel.

26. The fiber coupling tray of any of claims 18-25, further comprising a resilient return member acting on the control member for providing a return force to the control member that urges the control member to return to the locked position.

27. The optical fiber coupling holder according to claim 26, wherein the optical fiber coupling holder comprises a guide holder having a raised guide portion, the guide portion having a first through hole therethrough, the optical fiber rod passing through the first through hole, the control member movably fitted over the guide portion to perform a reciprocating motion along an axial direction of the optical fiber rod; the elastic reset piece is arranged along the axial direction of the optical fiber rod.

28. The fiber coupling tray according to claim 27, wherein the fiber coupling tray includes an inner bushing, the inner bushing is installed in the first through hole, the inner bushing has a second through hole, the second through hole is used as one section of the matching channel, the fiber rod passes through the second through hole, and the wall of the second through hole is provided with the receiving cavity.

29. The fiber coupling holder according to claim 28, wherein the fiber coupling holder comprises a base having a third through hole, the guide holder and the inner bushing are fixedly connected to the base, and the fiber rod passes through the third through hole.

30. The utility model provides an optoacoustic imaging system's optical fiber plug, its characterized in that, including the optic fibre pole that is used for transmitting laser and be used for with the optical fiber coupling seat complex joint body, the joint body with optic fibre pole fixed connection, be equipped with on the joint body be used for with the optical fiber coupling seat complex groove structure of pegging graft.

31. The fiber optic plug of claim 30, wherein the recessed region of the groove structure is disposed annularly about the fiber optic rod.

32. A photoacoustic imaging system comprising the fiber coupling structure of any one of claims 1-16, the fiber coupling mount of any one of claims 17-29, or the fiber optic plug of any one of claims 30-31.