CN218383386U

CN218383386U - Optical fiber coupling structure, optical fiber coupling seat, optical fiber plug and photoacoustic imaging system

Info

Publication number: CN218383386U
Application number: CN202221323308.6U
Authority: CN
Inventors: 陶小会; 黄力锋; 马慧健
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 locking piece and a control piece for locking the optical fiber plug. The control piece is movably arranged around the circumferential direction of the optical fiber plug, and the locking and unlocking states of the locking piece and the optical fiber plug are adjusted through the circumferential movement of the control piece relative to the optical fiber plug. The mode is simpler to operate, the fixed connection effect of the optical fiber plug is stable and reliable, and the optical fiber plug is not easy to fall off.

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 bearing light spots and plugging 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 the dismouting convenience.

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

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

the optical fiber coupling seat is used for connecting the optical fiber plug and comprises a control piece, a matching channel which is arranged in a penetrating mode and a locking piece which is used for locking the optical fiber rod, one end of the optical fiber plug is installed in the matching channel, the control piece is movably arranged around the circumferential direction of the optical fiber plug, and the locking piece is arranged on the control piece; the movable track of the control part is provided with a locking position and a releasing position; in the locked position, the locking member locks the fiber optic plug within the mating channel; in the release position, the latch releases the fiber optic plug.

In one embodiment, the locking piece protrudes towards the optical fiber plug, and a clamping part buckled with the locking piece is arranged on a partial region of the optical fiber plug in the circumferential direction;

at the locking position, the locking piece is clamped with the clamping part;

and at the release position, the clamping part is released by the locking piece.

In one embodiment, the optical fiber coupling base further includes a first elastic resetting member, the first elastic resetting member acts on the locking member, and the first elastic resetting member applies a restoring force to the locking member to urge the locking member to move towards the optical fiber plug.

In one embodiment, the optical fiber coupling seat further includes a second elastic resetting member, the second elastic resetting member acts on the control member, and the second elastic resetting member applies a restoring force to the control member, so that the control member is kept in the locking position.

In one embodiment, the clamping portion is provided with a clamping table, a guide surface is obliquely arranged in the inserting direction of the clamping table, and the guide surface is used for compressing the locking piece when the clamping portion is inserted, so that the locking piece can be clamped into the clamping table.

In one embodiment, the second elastic resetting member acts on the optical fiber plug simultaneously, and the second elastic resetting member applies a restoring force to the optical fiber plug to urge the optical fiber plug to move towards the pulling-out direction.

In one embodiment, the optical fiber coupling seat includes a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is used as a section of the matching channel, the optical fiber plug passes through the second through hole and can drive the inner bushing to move together in a direction close to the base, and the second elastic resetting member acts on the inner bushing to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction through the inner bushing.

In one embodiment, the second elastic resetting piece is sleeved on the inner bushing and abutted against the inner bushing, one end of the second elastic resetting piece is connected with the control piece, the movement of the control piece drives the second elastic resetting piece to deform in a twisting manner, and the inner bushing forms an anti-rotation structure so as to prevent the second elastic resetting piece from driving the inner bushing to rotate.

In one embodiment, the first through hole has a non-circular cross-section and the inner bushing has a non-circular cross-section matching the first through hole to form an anti-rotation structure.

In one embodiment, the base has a second position-limiting portion, the second position-limiting portion is located in the insertion direction of the optical fiber plug and limits the optical fiber plug and/or the inner bushing in the insertion direction, and in the locking position, the locking member limits the optical fiber plug in the pulling direction of the optical fiber plug to prevent the optical fiber plug from moving along the axial direction of the optical fiber plug.

In one embodiment, the optical fiber coupling seat includes a third elastic resetting member, the third elastic resetting member acts on the optical fiber plug, and the third elastic resetting member applies a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction.

In one embodiment, the optical fiber coupling seat includes a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is used as a section of the matching channel, the optical fiber plug passes through the second through hole and can drive the inner bushing to move together in a direction close to the base, and the third elastic reset member is sleeved on the inner bushing to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction through the inner bushing.

In one embodiment, the optical fiber coupling seat comprises a limiting guide body, the limiting guide body is fixedly installed on the base, the limiting guide body is provided with a third through hole, the third through hole serves as one section of the matching channel, the third through hole is provided with the rotation preventing structure, the optical fiber plug penetrates through the third through hole, the inner bushing is arranged in the third through hole, the control piece is movably sleeved on the limiting guide body and can rotate along the limiting guide body, a guide groove is formed in the limiting guide body and is circumferentially arranged along the guide groove, and the locking piece penetrates into the third through hole from the guide groove and can move along the circumferential direction of the limiting guide body in the guide groove under the rotation of the control piece.

In one embodiment, the mating channel has an anti-rotation feature to prevent rotation of the fiber optic plug within the mating channel; the optical fiber coupling seat comprises a limiting structure, the control piece is provided with a locking limiting part and an unlocking limiting part, the locking limiting part and the unlocking limiting part are arranged along the circumferential direction of the control piece, the limiting structure is located between the locking limiting part and the unlocking limiting part, and the locking limiting part and the unlocking limiting part are circumferentially rotated to form blocking.

In one embodiment, the lock limit portion and the unlock limit portion are circumferentially spaced by 90 °.

In one embodiment, the optical fiber coupling seat further has a second limiting portion, the second limiting portion is located in the insertion direction of the optical fiber plug and directly or indirectly limits the optical fiber plug in the insertion direction, and in the locking position, the locking member forms a limit in the pulling direction of the optical fiber plug to prevent the optical fiber plug from moving along the axial direction thereof.

In one embodiment, in the locked position, the locking member forms a stop in both the insertion direction and the removal direction of the optical fiber plug to prevent the optical fiber plug from moving axially along the locking member.

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

In one embodiment, the number of the clamping parts is two, and the clamping parts are oppositely arranged on two sides of the clamping body.

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, the optical fiber coupling seat is provided with a matching channel which is arranged in a penetrating way and a locking piece which is used for locking the optical fiber rod, one end of the optical fiber plug is arranged in the matching channel, the locking piece is arranged in the circumferential direction of the optical fiber plug, a structure which can rotate relatively is arranged between the locking piece and the optical fiber plug, and based on the relative position change of the locking piece and the optical fiber plug, the locking piece can lock the optical fiber plug on the optical fiber coupling seat and release the optical fiber plug from the optical fiber coupling seat.

In view of the above, an embodiment of the present application provides an optical fiber coupling seat of a photoacoustic imaging system, including a mating channel disposed through the optical fiber coupling seat, a locking member for locking the optical fiber rod, and a control member, wherein the mating channel is used for inserting the optical fiber rod, the control member is movably disposed around the circumference of the mating channel, and the locking member is located on the control member; the movable track of the control piece is provided with a locking position and a releasing position;

in the locked position, the locking member is capable of locking the fiber optic plug in the mating channel;

in the release position, the latch member is capable of releasing the fiber optic plug.

In one embodiment, the locking member protrudes into the mating channel, and in the locking position, the locking member can be clamped with the optical fiber plug; in the release position, the latch member is capable of disengaging from the fiber optic plug.

In one embodiment, the optical fiber coupling seat includes a first elastic resetting member, the first elastic resetting member acts on the locking member, and the first elastic resetting member applies a restoring force to the locking member to urge the locking member to move towards the matching channel.

In one embodiment, the second elastic reset member is configured to act on the optical fiber plug, and the second elastic reset member is configured to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction.

In one embodiment, the optical fiber coupling seat includes a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is used as a section of the mating channel, the inner bushing can move together with the optical fiber plug in a direction close to the base, and the second elastic reset member acts on the inner bushing to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction.

In one embodiment, the first through hole has a non-circular cross-section and the inner bushing has a non-circular cross-section matching the first through hole to form the anti-rotation structure.

In one embodiment, the base has a second position-limiting portion, the second position-limiting portion is located in the insertion direction of the optical fiber plug and can limit the optical fiber plug and/or the inner bushing in the insertion direction, and in the locking position, the locking member can limit the optical fiber plug in the pulling direction of the optical fiber plug so as to prevent the optical fiber plug from moving along the axial direction of the optical fiber plug.

In one embodiment, the optical fiber coupling base comprises a third elastic reset member, and the third elastic reset member is configured to act on the optical fiber plug so as to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction.

In one embodiment, the optical fiber coupling seat includes a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is used as a section of the mating channel, the inner bushing can move together with the optical fiber plug in a direction close to the base, and the third elastic reset member is sleeved on the inner bushing to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction through the inner bushing.

In one embodiment, the optical fiber coupling seat comprises a limiting guide body, the limiting guide body is fixedly mounted on the base, the limiting guide body is provided with a third through hole, the third through hole serves as one section of the matching channel, the inner bushing is arranged in the third through hole, the control piece is movably sleeved on the limiting guide body and can rotate along the limiting guide body, a guide groove is formed in the limiting guide body and circumferentially arranged along the guide groove, and the locking piece penetrates into the third through hole from the guide groove and can move along the circumferential direction of the limiting guide body in the guide groove under the rotation of the control piece.

In one embodiment, the mating channel has an anti-rotation feature to prevent rotation of the fiber optic plug within the mating channel; the optical fiber coupling seat comprises a limiting structure, the control piece is provided with a locking limiting part and an unlocking limiting part, the locking limiting part and the unlocking limiting part are arranged along the circumferential direction of the control piece, the limiting structure is located between the locking limiting part and the unlocking limiting part, and the locking limiting part and the unlocking limiting part are rotated in the circumferential direction to form blocking.

In one embodiment, the optical fiber coupling seat further has a second limiting portion, the second limiting portion is located in the insertion direction of the optical fiber plug and can directly or indirectly limit the optical fiber plug in the insertion direction, and in the locking position, the locking member can limit the optical fiber plug in the pulling direction of the optical fiber plug to prevent the optical fiber plug from moving along the axial direction of the optical fiber plug.

In one embodiment, in the locking position, the locking member is capable of forming a limit in both the insertion direction and the removal direction of the optical fiber plug to prevent the optical fiber plug from moving along the axial direction thereof.

Based on above-mentioned purpose, this application embodiment provides a photoacoustic imaging system's optical fiber plug, 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, the joint body upwards to week the subregion be equipped with optical fiber coupling seat complex joint portion.

In one embodiment, the number of the clamping parts is two, and the two clamping parts are oppositely arranged on two sides of the clamping body.

In view of the above, an embodiment of the present application provides a photoacoustic imaging system, including the optical fiber coupling structure according to any one of the above descriptions, the optical fiber coupling holder according to any one of the above descriptions, or the optical fiber plug according to any one of the above descriptions.

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 locking piece and a control piece for locking the optical fiber plug. The control piece is movably arranged around the circumferential direction of the optical fiber plug, and the locking and unlocking states of the locking piece and the optical fiber plug are adjusted through the circumferential movement of the control piece relative to the optical fiber plug. The mode is simpler to operate, the fixed connection effect of the optical fiber plug is stable and reliable, and the optical fiber plug is not easy to fall off.

Drawings

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

FIG. 2 is a schematic view of an embodiment of the present application showing a fiber optic plug prior to insertion;

FIG. 3 is a cross-sectional view of an embodiment of a fiber optic plug shown prior to insertion;

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

FIG. 5 is a schematic view of an embodiment of the present application showing an unlocked fiber optic plug;

FIG. 6 is a schematic cross-sectional view of an embodiment of the present application as the fiber optic plug is unlocked;

fig. 7 is a schematic structural diagram of a clamping body of an optical fiber plug according to 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 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 clearly describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where a certain sequence must be followed.

The ordinal numbers used herein for the components, such as "first," "second," etc., are used merely to distinguish between the objects described, and do 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. 1-6, 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 fiber optic plug 100 has a fiber optic stem 110 for delivering laser light. The fiber coupling receptacle 200 is used to fixedly connect the fiber plug 100 to complete the docking of the fiber rod 110 with the required components, and to help the fiber rod 110 to transmit the pulse laser to the corresponding components, such as a laser.

Referring to fig. 1 to 6, 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 6) disposed therethrough and a locking member 210 for locking the fiber rod 110. One end (left end as viewed in fig. 1-6) of the optical fiber plug 100 is mounted in the mating channel, and the locking members 210 are disposed on the circumference of the optical fiber plug 100. The locking member 210 and the optical fiber plug 100 have a structure capable of rotating relatively, and based on the relative position change of the locking member 210 and the optical fiber plug, the locking member 210 can lock the optical fiber plug 100 on the optical fiber coupling seat 200 and release the optical fiber plug 100 from the optical fiber coupling seat 200.

The relative rotation between the locking member 210 and the optical fiber plug 100 may be achieved by rotating the locking member 210 around the optical fiber plug 100, by rotating the optical fiber plug 100 while the locking member 210 is stationary, or by rotating both of them. The operator can switch between the locked state and the unlocked state by operating the lock member 210 and the optical fiber plug 100 to change the relative positions therebetween. The latch members 210 and the latching arrangement of the fiber optic plug 100 may be accomplished by a snap or other latching arrangement. When the positional relationship between the lock members 210 and the optical fiber plug 100 is adjusted to the release state, the operator can take out the optical fiber plug 100. The operator can lock and unlock the optical fiber plug 100 only by changing the relative positions of the locking member 210 and the optical fiber plug 100, and the disassembly and assembly are more convenient.

In one embodiment, to prevent the locking member 210 from rotating, the optical fiber plug 100 also rotates, thereby affecting the state switching of the locking member 210. The matching channel has an anti-rotation structure, and after the optical fiber plug 100 is installed on the anti-rotation structure, the optical fiber plug is influenced by the shape of the anti-rotation structure, cannot rotate around the axial direction of the optical fiber plug 100 or can only rotate at a slight angle, and does not influence the position change of the locking piece 210 and the optical fiber plug 100 when rotating. The anti-rotation structure and the optical fiber plug 100 can adopt various structures capable of preventing two objects from rotating relatively, for example, the anti-rotation structure is a non-circular cavity (for example, on the limit guide 270 mentioned later, it has a third through hole 271 with a non-circular cross section, the third through hole 271 can be regarded as an anti-rotation structure in the matching channel), and the corresponding part of the optical fiber plug 100 has a non-circular cross section (for example, the shape of the clamping part 121 of the optical fiber plug 100 in the figure)

In one embodiment, the locking member 210 is rotated relative to the fiber optic plug 100. Referring to fig. 1-6, the fiber coupling base 200 includes a control member 220. The control member 220 is movably disposed around the circumference of the optical fiber plug 100, and the locking member 210 is disposed on the control member 220 and extends into the mating channel, i.e., protrudes toward the optical fiber plug 100. A partial region of the optical fiber plug 100 in the circumferential direction is provided with a clamping portion 121 engaged with the locking member 210, and the other partial region 122 does not form the clamping portion 121. The control member 220 has a locking position and a releasing position on its moving path. In the locking position, the locking piece 210 is clamped with the clamping part 121; in the release position, the locking member 210 releases the clamping portion 121, and at this time, the locking member 210 can be separated from the clamping portion 121 and is opposite to the area 122 of the optical fiber plug 100 where the clamping portion 121 is not formed. The locked position and the unlocked position may be a certain position or a section of area, that is, the control member 220 is located in the area, and both of the locked position and the unlocked position can be considered as being in the locked position or the unlocked position.

For example, referring to fig. 2 and 3, when the fiber rod 110 is inserted, the fiber rod 110 is not locked by the locking member 210, and the control member 220 is kept in the locking position (or in the unlocking position). Referring to fig. 4, at this time, the locking member 210 is locked with the optical fiber plug 100 and clamped and fixed, so that the optical fiber plug 100 cannot be pulled out from the optical fiber coupling seat 200. Referring to fig. 5 and 6, when the optical fiber plug 100 needs to be detached, the control member 220 is rotated to the unlocking position (as shown in fig. 5), and the locking member 210 moves to a position where the optical fiber plug 100 cannot be locked (i.e., the area 122 of the optical fiber plug 100 where the clamping portion 121 is not formed, as shown in fig. 6 and 7), so that the optical fiber plug 100 can be pulled out.

The locking member 210 may lock the optical fiber plug 100 in one direction or in multiple directions. For example, in one embodiment, the optical fiber coupling seat 200 further has a second position-limiting portion 251 (shown in fig. 3, 4, and 6), and the second position-limiting portion 251 is located in the insertion direction of the optical fiber plug 100 and directly or indirectly limits the optical fiber plug 100 in the insertion direction. In the locked position, the locking member 210 forms a stop in the direction of removal of the fiber optic plug 100. The locking member 210 and the second position-limiting portion 251 cooperate with each other to prevent the optical fiber plug 100 from moving along the axial direction thereof. In another embodiment, in the locking position, the locking member 210 defines a limit in both the insertion direction and the removal direction of the optical fiber plug 100, and the movement of the optical fiber plug 100 in both axial directions can be prevented by only using the locking member 210.

Referring to fig. 1-7, in one embodiment, the optical fiber plug 100 may include an optical fiber rod 110 and a clamping body 120 for cooperating with an optical fiber coupling seat 200. The clamping body 120 is fixedly connected with the optical fiber rod 110, a clamping portion 121 matched with the optical fiber coupling seat 200 is arranged in a partial region on the circumferential direction of the clamping body 120, and the clamping portion 121 is not formed in the other partial region 122. The engaging portions 121 may be two and are oppositely disposed at both sides of the engaging body 120. The two clamping portions 121 can be used to cooperate with the locking members 210 of the optical fiber coupling seat 200. Of course, in other embodiments, one or more of the clamping portions 121 may be provided. As shown in fig. 7, the engaging member 120 has an assembling through hole for being fixed on the optical fiber rod 110. In addition, in some embodiments, the clamping portion 121 can also be directly disposed on the fiber rod 110.

Referring to fig. 1-6, in one embodiment, the optical fiber coupling receptacle 200 further includes a first elastic restoring member 230, and the first elastic restoring member 230 acts on the latch member 210 and applies a restoring force to the latch member 210 to urge the latch member 210 to move toward the optical fiber plug 100. The elastic resetting piece acts on an object, and includes the situation that the elastic resetting piece is directly connected with the object to exert elastic force and also includes the situation that the elastic resetting piece indirectly exerts the elastic force on the object through other components. This is the case for the elastic restoring member described later.

More specifically, referring to fig. 1-6, the first elastic restoring member 230 and the locking member 210 can be fixedly installed in the installation through hole 221 of the control member 220 by a clamp 231 or other fixing structure. The latch 210 may take the form of, but is not limited to, a pin or other structure.

As shown in fig. 3 and 4, the first elastic restoring member 230 provides an elastic floating support. When the optical fiber plug 100 is inserted into the optical fiber coupling seat 200, the compression locking piece 210 moves in the direction away from the optical fiber plug 100, so that the optical fiber plug 100 can be normally inserted, and the locking piece 210 pops out under the action of the first elastic resetting piece 230 until the clamping portion 121 crosses the locking piece 210, so as to be clamped on the clamping portion 121. The locking member 210 forms a floating support structure, so that the control member 220 can be kept at the locking position during the insertion of the optical fiber plug 100, and the optical fiber plug 100 can be automatically snapped into the clamping portion 121 without excessive operation.

Referring to fig. 1, 3, 4, 6 and 7, in order to better engage the optical fiber plug 100 with the locking member 210 during insertion, the engaging portion 121 has an engaging platform 1211 in one embodiment. The insertion direction of the locking platform 1211 is provided with a guide surface 1212 arranged obliquely, and the guide surface 1212 is used for compressing the locking member 210 when the locking portion 121 is inserted until the locking platform 1211 moves to a position corresponding to the locking member 210, so that the locking member 210 can be locked on the locking platform 1211. The guide surface 1212 is not limited to the illustrated shape, and may have other shapes that can perform a similar guiding function.

The movement of the locking member 210 toward and away from the optical fiber plug 100 can be perpendicular to the optical fiber plug 100 along the radial direction of the optical fiber plug 100, or can be inclined from the optical fiber rod 110 along the radial direction of the optical fiber rod 110. Alternatively, the latch 210 can be moved toward and away from the fiber optic rod 110 in other directions.

In addition, in other embodiments, the first elastic restoring member 230 may be omitted, and the height of the protrusion of the locking member 210 may be kept constant. When the fiber optic plug 100 is inserted, the control member 220 may be first rotated to move to the unlocked position. After the fiber optic plug 100 is inserted, the control member 220 is moved to the locking position, thereby locking the fiber optic plug 100. The reverse operation is sufficient to remove the fiber optic plug 100.

The rotation of the control member 220 between the locked and unlocked positions may be manually actuated by an operator; the control may be performed by a power source such as a motor, and may be controlled by an operator in a wireless or wired manner.

In one embodiment, referring to fig. 1-6, the optical fiber coupling seat 200 further includes a second elastic restoring member 240, and the second elastic restoring member 240 acts on the control member 220 and applies a restoring force to the control member 220 to keep the control member 220 in the locking position. That is, the control member 220 is maintained in the locking position by the second elastic restoring member 240 without being subjected to an external force from an operator, and this state can be seen in fig. 3. The second elastic reset member 240 can keep the control member 220 in the locked position all the time, for example, when the control member 220 is rotated to the unlocked position and the optical fiber plug 100 is removed, once the external force applied by the operator is released, the control member 220 automatically resets under the action of the second elastic reset member 240 and returns to the locked position. The advantage of maintaining the control member 220 in the locking position is that the position of the locking member 210 can be determined before the optical fiber plug 100 is installed, and especially in combination with the elastic floating structure of the locking member 210, when the optical fiber plug 100 is inserted to the position of the locking member 210, the locking member 210 can be automatically clamped and fixed, thereby greatly facilitating the installation of the optical fiber plug 100 by an operator.

In order that the second elastic resetting member 240 can drive the control member 220 to reset, referring to fig. 2 and 5, in this embodiment, one end portion 241 of the second elastic resetting member 240 is connected to the control member 220, and the movement of the control member 220 drives the second elastic resetting member 240 to twist and deform.

Further, when the control member 220 is rotated to the unlocked position, the fiber optic plug 100 may be manually unplugged. Preferably, the fiber optic plug 100 is also automatically ejected by the resilient structure. For example, in one embodiment, the second resilient return member 240 simultaneously acts on the optical fiber plug 100, which applies a restoring force to the optical fiber plug 100 that urges the optical fiber plug 100 in the pull-out direction. After the locking state between the locking member 210 and the optical fiber plug 100 is released, the optical fiber plug 100 may be automatically ejected by the second elastic restoring member 240. This design greatly facilitates the removal of the fiber optic plug 100 by an operator. By simultaneously resetting the control member 220 and ejecting the optical fiber plug 100 through the second elastic resetting member 240, the structure of the optical fiber coupling base 200 can be simplified, so that the optical fiber coupling base 200 can be designed to be more compact and small.

Referring to fig. 1-6, in a more specific embodiment, the fiber coupling seat 200 includes a base 250 and an inner liner 260. The base 250 has a first through hole 252, and the inner sleeve 260 is movably disposed in the first through hole 252. The inner sleeve 260 has a second through hole 261, the second through hole 261 serving as a section of the fitting channel. The fiber optic plug 100 passes through the second through-hole 261 and is capable of bringing the inner sleeve 260 together to move closer to the base 250. To achieve the integral movement, the sleeve body of the inner sleeve 260 may be located on the insertion path of the clamping portion 121 or other components of the optical fiber plug 100. The first through hole 252 of the base 250 may limit and guide the inner bushing 260, and the second through hole 261 of the inner bushing 260 may limit and guide the optical fiber plug 100. The second resilient restoring member 240 acts on the inner sleeve 260 to apply a restoring force to the optical fiber plug 100 through the inner sleeve 260 that urges the optical fiber plug 100 in the pull-out direction. In the figures, the base 250 and inner liner 260 may be of a sleeve construction, or may be of a half-sleeve or other construction.

More specifically, the second elastic restoring element 240 is disposed on the inner sleeve 260, and particularly, may be disposed between the base 250 and the inner sleeve 260 and abut against the inner sleeve 260. Of course, the second elastic restoring member 240 may be disposed in parallel outside the inner liner 260 along the axial direction of the optical fiber plug 100.

Meanwhile, in order to keep the inner bushing 260 and the optical fiber plug 100 from rotating with the control unit 220, the inner bushing 260 forms an anti-rotation structure to prevent the second elastic restoring member 240 from driving the inner bushing 260 to rotate.

In fig. 1, the first through hole 252 has a non-circular cross section, the outer contour of the inner bushing 260 has a non-circular cross section matching the first through hole 252, and the inner bushing 260 and the first through hole 252 form an anti-rotation structure after being matched. Specifically, in fig. 1, the cross section of the outer contour of the first through hole 252 and the inner bushing 260 is substantially D-shaped, but other non-circular shapes such as square, triangle, oval, etc. may be adopted.

Further, in one embodiment, the base 250 may also serve to limit movement of the fiber optic plug 100 in the direction of insertion. The optical fiber plug 100 has the second stopper 251, and the second stopper 251 is positioned in the insertion direction of the optical fiber plug 100 and stops the optical fiber plug 100 and/or the inner liner 260 in the insertion direction. As shown in fig. 4, when the optical fiber plug 100 and the inner liner 260 move to the second stopper 251, they cannot move in the insertion direction any more. At this time, in the locking position, the locking member 210 forms a limit in the direction of pulling out the optical fiber plug 100, so that the optical fiber plug 100 can be prevented from moving in two directions along the axial direction thereof.

In addition to simultaneously actuating the control member 220 to reset and eject the fiber optic plug 100 via the second resilient reset element 240, different resilient reset elements may be used to perform these two functions, respectively, in other embodiments. For example, the optical fiber coupling receptacle 200 includes a third elastic restoring member, which acts on the optical fiber plug 100 and applies a restoring force to the optical fiber plug 100 to urge the optical fiber plug 100 to move in the pull-out direction. The structures of the third elastic restoring member, the optical fiber plug 100, the inner sleeve 260, the base 250 and the like refer to the structure of the second elastic restoring member 240, but at this time, the third elastic restoring member is not connected with the control member 220, and does not drive the control member 220 to restore to the locking position.

The first elastic restoring member 230, the second elastic restoring member 240 and the third elastic restoring member may all adopt various elastic body structures such as a spring, an elastic sheet, a torsion spring and the like.

Further, in order to make the fiber coupling seat 200 more stable and the control member 220 more reliable and smooth in rotation, referring to fig. 1-6, in one embodiment, the fiber coupling seat 200 includes a position-limiting guide 270. The limit guide 270 is fixedly installed on the base 250. The position limiting guide 270 has a third through hole 271, and the third through hole 271 is a section of the matching passage. The third through hole 271 has the above-mentioned rotation prevention structure. The optical fiber plug 100 passes through the third through hole 271, and the inner bushing 260 is disposed in the third through hole 271. The control member 220 is movably sleeved on the limit guide body 270 and can rotate along the limit guide body 270. The control member 220 and the position limiting guide 270 may be of a sleeve structure, or may be of a half-sleeve structure or other structures. The control member 220 may also have a through hole 224, with the fiber optic plug 100 passing through the through hole 224.

The limit guide body 270 is provided with a guide groove 272 arranged along the circumferential direction thereof, and the locking member 210 penetrates into the third through hole 271 from the guide groove 272 and can move along the circumferential direction of the limit guide body 270 in the guide groove 272 under the rotation of the control member 220. The length of the channel 272 in the circumferential direction of the limit guide 270 may also be used to limit the range of rotation of the locking member 210 about the fiber optic plug 100.

Further, in order that an operator can rotate the control member 220 to a desired position more accurately and quickly, referring to fig. 2 and 5, the fiber coupling seat 200 includes a position limiting structure 280, and the control member 220 has a lock position limiting portion 222 and an unlock position limiting portion 223. The stop structure 280 may be fixedly disposed on a fixed component within the fiber coupling seat 200, such as the base 250 or other component. The lock stopper portion 222 and the lock stopper portion 223 are both provided along the circumferential direction of the control member 220. The limiting structure 280 is located on a rotation path of the control member 220, specifically, between the lock limiting portion 222 and the unlock limiting portion 223, and forms a stop for circumferential rotation of the lock limiting portion 222 and the unlock limiting portion 223. As shown in fig. 2, when the locking stopper 222 moves counterclockwise to the illustrated state, the locking stopper 222 abuts against the stopper 280, and the control member 220 is in the locking position. As shown in fig. 5, when the lock release position limiter 223 moves clockwise as shown in the figure to the shown state, the lock release position limiter 280 abuts on the lock release position limiter 223, and the control member 220 is in the lock release position. By virtue of this design, the operator can accurately and quickly ascertain the current position of the control member 220 or rotate the control member 220 to a desired position (e.g., without undue effort to determine the position of the control member 220).

In one embodiment, the lock position-limiting portion 222 and the unlock position-limiting portion 223 are circumferentially spaced apart by 90 ° (other angles are also possible), i.e., the control member 220 is rotated by 90 °, and the switching between the lock position and the unlock position can be accomplished.

Taking the embodiment shown in fig. 1-6 as an example, the structure can realize one-hand quick locking and 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 locking member protrudes toward the optical fiber plug, and a partial region of the optical fiber plug in the circumferential direction is provided with a clamping portion that is fastened with the locking member;

at the locking position, the locking piece is clamped with the clamping part;

in the release position, the locking piece releases the clamping portion.

3. The fiber coupling structure of claim 2, wherein the fiber coupling receptacle further comprises a first resilient return member, the first resilient return member acting on the latch member, the first resilient return member applying a restoring force to the latch member that urges the latch member to move toward the fiber optic plug.

4. The fiber coupling structure of claim 3, wherein the fiber coupling nest further comprises a second resilient return member, the second resilient return member acting on the control member, the second resilient return member applying a restoring force to the control member that urges the control member to remain in the latched position.

5. The optical fiber coupling structure according to claim 4, wherein the clamping portion has a clamping table, and a guide surface is obliquely arranged in an insertion direction of the clamping table, and the guide surface is used for compressing the locking member when the clamping portion is inserted, so that the locking member can be clamped into the clamping table.

6. The optical fiber coupling structure according to claim 4, wherein the second elastic restoring member simultaneously acts on the optical fiber plug, and the second elastic restoring member applies a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction.

7. The optical fiber coupling structure according to claim 6, wherein the optical fiber coupling seat includes a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is used as a segment of the mating channel, the optical fiber plug passes through the second through hole and can drive the inner bushing to move together in a direction approaching the base, and the second elastic restoring member acts on the inner bushing to apply a restoring force to the optical fiber plug through the inner bushing to urge the optical fiber plug to move in a pulling-out direction.

8. The optical fiber coupling structure according to claim 7, wherein the second elastic resetting member is sleeved on the inner bushing and abuts against the inner bushing, one end of the second elastic resetting member is connected with the control member, the movement of the control member drives the second elastic resetting member to be twisted and deformed, and the inner bushing forms an anti-rotation structure to prevent the second elastic resetting member from driving the inner bushing to rotate.

9. The fiber coupling structure of claim 8, wherein the first through-hole has a non-circular cross-section and the inner sleeve has a non-circular cross-section that matches the first through-hole to form an anti-rotation structure.

10. The optical fiber coupling structure according to claim 7, wherein the base has a second stopper portion which is located in an insertion direction of the optical fiber plug and which forms a stopper for the optical fiber plug and/or the inner liner in the insertion direction, and in the locking position, the locking member forms a stopper in a withdrawal direction of the optical fiber plug to prevent the optical fiber plug from moving in an axial direction thereof.

11. The fiber coupling structure according to claim 4, wherein the fiber coupling mount includes a third elastic restoring member, the third elastic restoring member acts on the fiber plug, and the third elastic restoring member applies a restoring force to the fiber plug to urge the fiber plug to move in a pulling-out direction.

12. The optical fiber coupling structure according to claim 11, wherein the optical fiber coupling seat includes a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is a section of the mating channel, the optical fiber plug passes through the second through hole and can drive the inner bushing to move together in a direction close to the base, and the third elastic resetting member is sleeved on the inner bushing to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move in a pulling-out direction through the inner bushing.

13. The optical fiber coupling structure according to claim 7 or 12, wherein the optical fiber coupling seat includes a position-limiting guide body, the position-limiting guide body is fixedly mounted on the base, the position-limiting guide body has a third through hole, the third through hole serves as a section of the matching channel, the third through hole has an anti-rotation structure, the optical fiber plug passes through the third through hole, the inner bushing is disposed in the third through hole, the control member is movably sleeved on the position-limiting guide body and can rotate along the position-limiting guide body, a guide groove is disposed on the position-limiting guide body along a circumferential direction of the position-limiting guide body, and the locking member penetrates into the third through hole from the guide groove and can move in the guide groove along the circumferential direction of the position-limiting guide body under rotation of the control member.

14. The fiber coupling structure of claim 2, wherein the mating channel has an anti-rotation feature to prevent rotation of the fiber plug within the mating channel; the optical fiber coupling seat comprises a limiting structure, the control piece is provided with a locking limiting part and an unlocking limiting part, the locking limiting part and the unlocking limiting part are arranged along the circumferential direction of the control piece, the limiting structure is located between the locking limiting part and the unlocking limiting part, and the locking limiting part and the unlocking limiting part are rotated in the circumferential direction to form blocking.

15. The fiber coupling structure of claim 14, wherein the lock stop portion and the unlock stop portion are circumferentially separated by 90 °.

16. The optical fiber coupling structure according to claim 2, wherein the optical fiber coupling holder further has a second position-limiting portion which is located in the insertion direction of the optical fiber plug and directly or indirectly limits the optical fiber plug in the insertion direction, and in the locking position, the locking member forms a limit in the extraction direction of the optical fiber plug to prevent the optical fiber plug from moving in the axial direction thereof.

17. The fiber optic coupling structure of claim 2, wherein in the locked position, the locking member defines a stop in both the insertion direction and the removal direction of the fiber optic plug to prevent axial movement of the fiber optic plug therealong.

18. The optical fiber coupling structure of claim 2, wherein the optical fiber plug comprises a clamping body, the clamping body is fixedly connected with the optical fiber rod, and the clamping portion is disposed on the clamping body.

19. The optical fiber coupling structure of claim 18, wherein there are two clamping portions, and the clamping portions are oppositely disposed at two sides of the clamping body.

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

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

21. The optical fiber coupling seat of the photoacoustic imaging system is characterized by comprising a matching channel, a locking piece and a control piece, wherein the matching channel is arranged in a penetrating mode, the locking piece is used for locking an optical fiber rod, the matching channel is used for inserting the optical fiber rod, the control piece is movably arranged around the circumference of the matching channel, and the locking piece is positioned on the control piece; the movable track of the control part is provided with a locking position and a releasing position;

22. The fiber coupling receptacle of claim 21, wherein the locking member protrudes into the mating channel, and wherein the locking member is capable of engaging with the fiber optic plug in the locked position; in the release position, the latch member is capable of disengaging from the fiber optic plug.

23. The fiber optic coupling holder of claim 21, wherein the fiber optic coupling holder includes a first resilient return member that acts on the latch member, the first resilient return member applying a restoring force to the latch member that urges the latch member to move toward the mating channel.

24. The fiber optic coupling holder of claim 23, further comprising a second resilient return member, the second resilient return member acting on the control member, the second resilient return member applying a return force to the control member that urges the control member to remain in the latched position.

25. The fiber optic coupling holder of claim 24, wherein the second resilient return member is also structured to act on the fiber optic plug, the second resilient return member being configured to apply a restoring force to the fiber optic plug that urges the fiber optic plug to move in a pull-out direction.

26. The optical fiber coupling holder according to claim 25, wherein the optical fiber coupling holder comprises a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is a section of the mating channel, the inner bushing is capable of moving toward the base together with the optical fiber plug, and the second elastic restoring member acts on the inner bushing to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move toward a pulling-out direction through the inner bushing.

27. The optical fiber coupling holder according to claim 26, wherein the second elastic resetting member is sleeved on the inner bushing and abuts against the inner bushing, one end of the second elastic resetting member is connected to the control member, the movement of the control member drives the second elastic resetting member to distort, and the inner bushing forms an anti-rotation structure to prevent the second elastic resetting member from driving the inner bushing to rotate.

28. The fiber coupling holder of claim 27, wherein the first through hole has a non-circular cross-section and the inner sleeve has a non-circular cross-section that matches the first through hole to form the anti-rotation feature.

29. The fiber optic coupling receptacle of claim 26, wherein the base has a second limit portion that is located in an insertion direction of the fiber optic plug and is capable of limiting the insertion direction of the fiber optic plug and/or the inner liner, and wherein in the locked position, the locking member is capable of limiting in an extraction direction of the fiber optic plug to prevent the fiber optic plug from moving axially therealong.

30. The fiber optic coupling holder of claim 24, wherein the fiber optic coupling holder includes a third resilient return member configured to act on the fiber optic plug to apply a return force to the fiber optic plug that urges the fiber optic plug in a pull-out direction.

31. The optical fiber coupling receptacle according to claim 30, wherein the optical fiber coupling receptacle comprises a base and an inner bushing, the base has a first through hole, the inner bushing is movably disposed in the first through hole, the inner bushing has a second through hole, the second through hole is a section of the mating channel, the inner bushing is capable of moving toward the base together with the optical fiber plug, and the third elastic restoring member is sleeved on the inner bushing to apply a restoring force to the optical fiber plug to urge the optical fiber plug to move toward a pulling-out direction.

32. The fiber coupling holder according to claim 26 or 31, wherein the fiber coupling holder includes a position-limiting guide, the position-limiting guide is fixedly mounted on the base, the position-limiting guide has a third through hole, the third through hole serves as a section of the fitting channel, the inner liner is disposed in the third through hole, the control member is movably disposed on the position-limiting guide and can rotate along the position-limiting guide, the position-limiting guide is provided with a guide groove disposed along a circumferential direction thereof, and the locking member penetrates from the guide groove into the third through hole and can move along a circumferential direction of the position-limiting guide in the guide groove under rotation of the control member.

33. The fiber coupling receptacle of claim 21, wherein the mating channel has an anti-rotation feature to prevent rotation of the fiber plug within the mating channel; the optical fiber coupling seat comprises a limiting structure, the control piece is provided with a locking limiting part and an unlocking limiting part, the locking limiting part and the unlocking limiting part are arranged along the circumferential direction of the control piece, the limiting structure is located between the locking limiting part and the unlocking limiting part, and the locking limiting part and the unlocking limiting part are rotated in the circumferential direction to form blocking.

34. The fiber coupling receptacle of claim 33, wherein the locking limit and the unlocking limit are circumferentially spaced 90 degrees apart.

35. The fiber coupling receptacle of claim 21, further comprising a second position-limiting portion, the second position-limiting portion being located in the insertion direction of the fiber plug and being capable of directly or indirectly limiting the insertion direction of the fiber plug, and wherein in the locking position, the locking member is capable of limiting the extraction direction of the fiber plug to prevent the fiber plug from moving axially along the locking member.

36. The fiber optic coupling receptacle of claim 21, wherein in the locked position, the locking member is capable of forming a stop in both an insertion direction and an extraction direction of the fiber optic plug to prevent axial movement of the fiber optic plug along the locking member.

37. 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, the ascending subregion of joint body circumference be equipped with optical fiber coupling seat complex joint portion.

38. The optical fiber plug according to claim 37, wherein the two clamping portions are oppositely arranged on two sides of the clamping body.

39. A photoacoustic imaging system comprising the fiber coupling structure of any one of claims 1-20, the fiber coupling mount of any one of claims 21-36, or the fiber optic plug of any one of claims 37-38.