CN218979026U - Channel fixing device capable of being opened - Google Patents

Abstract

The utility model discloses a channel fixing device capable of being opened, which belongs to the technical field of medical appliances, and comprises a connecting rod, wherein a pair of opening brackets are connected to the connecting rod in a sliding manner, the tail ends of the opening brackets are respectively provided with a pipeline drag hook extending downwards, each opening bracket comprises a connecting arm and a rotating arm, one end of each connecting arm is connected to the connecting rod in a sliding manner, and the other end of each connecting arm is provided with a connecting hole extending along the length direction of the connecting arm; one end of the rotating arm is provided with a rotating shaft which extends along the length direction and is rotatably inserted in the connecting hole, the other end of the rotating arm is provided with a pipeline drag hook, and a channel for an operation instrument to pass through is formed between the pipeline drag hooks; the connecting arm is provided with an adjusting and locking device which is used for driving the rotating shaft to rotate in the connecting hole and locking the rotating shaft in the connecting hole after the rotating shaft rotates. The expandable channel fixing device can provide a wide operation view on the basis of reducing the operation incision as much as possible, and is stable in expansion.

Description

Channel fixing device capable of being opened

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a channel fixing device capable of being opened.

Background

The spine is critical in human physiology for mobility, support and balance. In the treatment of human spinal disorders, vertebral body injuries are often caused by spinal tumors, tuberculosis and severe fractures. At this time, the spine needs to be operated, and in order to make the operation accurate, the operation incision often needs to be spread, so that the operation field is fully exposed.

Minimally invasive spinal surgery means avoiding large incisions under certain medical risks, adopting small incisions, using special minimally invasive channel instruments/devices, reaching lesions from normal anatomy under the monitoring of an imager or the guidance of navigation technology, using various miniature manual or electric instruments, and completing the whole operation process under visual conditions so as to achieve the purposes of smaller incisions, less tissue trauma, less bleeding, high operation accuracy, definite effect and quick postoperative function recovery compared with the traditional or standard spinal surgery.

Thus, stability of minimally invasive access instruments is particularly important for the overall surgical procedure. The existing minimally invasive channel instrument has the defects of unstable or difficult expansion, low operability, incapability of providing a wide operation view, inconvenient operation in operation of doctors, influence on operation safety and the like.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the expandable channel fixing device which can provide a wide operation view and realize stable expansion on the basis of reducing the operation incision as much as possible.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a can strut passageway fixing device, includes the connecting rod of horizontal setting, sliding connection has a pair of support that struts on the connecting rod, the end of strut all is equipped with downwardly extending's pipeline drag hook, strut the support and all include linking arm and swinging boom, wherein:

one end of the connecting arm is connected to the connecting rod in a sliding way, and the other end of the connecting arm is provided with a connecting hole extending along the length direction of the connecting arm;

one end of the rotating arm is provided with a rotating shaft which extends along the length direction and is rotatably inserted into the connecting hole, the other end of the rotating arm is provided with the pipeline drag hook, and a channel for an operation instrument to pass through is formed between the pipeline drag hooks;

the connecting arm is provided with an adjusting locking device which is used for driving the rotating shaft to rotate in the connecting hole and locking the rotating shaft in the connecting hole after the rotating shaft rotates.

Further, the one end that the linking arm is close to the connecting rod is equipped with the confession the sliding tray that the connecting rod passed, one side of connecting rod is equipped with the flank of tooth, wherein:

the connecting arm is provided with a driving device for driving the connecting arm to slide on the connecting rod, the connecting arm is provided with a gear hole communicated with the sliding groove, the driving device is a gear rotationally assembled in the gear hole and meshed with the tooth surface, and the upper end of the gear is provided with an instrument driving part extending out of the gear hole;

and/or, one end of the connecting arm, which is close to the connecting rod, is provided with a first locking device for locking the connecting arm, the first locking device is a clamping button, the middle part of the clamping button is hinged on the connecting arm, one end of the clamping button is provided with a positioning tooth meshed with the tooth surface, the other end of the clamping button is used as a pressing part, and a spring is arranged between the pressing part and the connecting arm.

Further, a hook piece is arranged on the side face of the rotating shaft, a through hole is formed in the connecting arm at a position corresponding to the hook piece, and the adjusting and locking device is an adjusting and locking piece which is located in the through hole and can drive the hook piece to move up and down.

Further, the through hole is a threaded hole, the adjusting locking piece is an adjusting locking bolt which is in threaded connection with the threaded hole, a U-shaped opening is formed in the hook piece, a dumbbell-shaped plug used for being clamped in the U-shaped opening is arranged at the lower end of the adjusting locking bolt, and an instrument driving part extending out of the threaded hole is arranged at the upper end of the adjusting locking bolt.

Further, a transversely extending U-shaped slot is formed in the connecting arm, the connecting hole is formed in the bottom of the U-shaped slot, the adjusting locking piece is arranged on the upper side wall of the U-shaped slot, and the hook piece avoiding slot is formed in the lower side wall of the U-shaped slot.

Further, the pipeline drag hook comprises a drag hook main body and a connecting plate positioned on the side face of the upper end of the drag hook main body, a plug-in column is arranged on the connecting plate, and one end, close to the pipeline drag hook, of the rotating arm is provided with a plug-in hole for containing the plug-in column vertically and a second locking device for locking the plug-in column in the plug-in hole.

Further, a ball socket is arranged on one side of the plug-in column, a steel ball hole is arranged on the inner side wall of the plug-in hole corresponding to the ball socket, and the second locking device comprises steel balls which are positioned in the steel ball hole and matched with the ball socket, and a button for driving the steel balls;

the rotary arm is provided with a button mounting hole communicated with the steel ball hole, the button comprises a button main body part which is slidably connected in the button mounting hole and a button pressing part which is positioned outside the button mounting hole, and the tail end of the button main body part is provided with an annular groove for accommodating the steel ball.

Further, a limiting groove extending along the length direction of the button main body is formed in the middle of the button main body, a pin hole is formed in the rotating arm at a position corresponding to the limiting groove, and a limiting pin is arranged in the limiting groove and the pin hole in a penetrating mode;

and/or a spring is arranged between the tail end of the button main body part and the bottom wall of the button mounting hole.

Further, the drag hook main body is in a semicircular shape capable of being mutually buckled;

and/or the drag hook main body is provided with a positioning pinhole.

Further, a light source hole is formed in the connecting end of the connecting plate and the drag hook main body;

and/or the middle part of the connecting plate is hinged with a pressing plate, and a torsion spring is arranged on a hinge shaft of the pressing plate;

and/or the inner side of the connecting plate of one pipeline drag hook is provided with a positioning groove, and the inner side of the connecting plate of the other pipeline drag hook is provided with a positioning convex rib matched with the positioning groove;

and/or both ends of the connecting rod are provided with U-shaped grooves for being connected with an external fixing arm.

The utility model has the following beneficial effects:

according to the utility model, the tail ends of the supporting frames are respectively provided with the downward extending pipeline drag hooks, the supporting frames comprise the connecting arms and the rotating arms, the connecting arms are provided with the adjusting and locking devices which are used for driving the rotating shafts of the rotating arms to rotate in the connecting holes and locking the rotating shafts in the connecting holes after rotating, compared with the prior art, the parallel supporting can be realized by driving the pair of supporting frames to slide back on the connecting rods by an operator, the rotating shafts of the rotating arms are driven to rotate in the connecting holes by the adjusting and locking devices, so that the angle of the pipeline drag hooks swings, the bottom sector supporting is realized, the operator can adjust the parallel supporting distance and the sector supporting swinging angle according to the operation requirement, the operation view is adjusted, the wide operation view can be provided on the basis of reducing the operation incision as far as possible, the supporting is stable, the operation is convenient, and the operation channel can be quickly established.

Drawings

FIG. 1 is a schematic view of a structure of an expandable tunnel fixation device of the present utility model when being expanded in parallel;

FIG. 2 is a schematic view of the bottom fan-shaped expansion of the expandable tunnel fixation device of the present utility model;

FIG. 3 is a schematic view of the assembled structure of the connecting arm and the rotating arm in the expandable tunnel fixture according to the present utility model, wherein (a) is a side view, (b) is a top view and shows a sectional structure at the push button, and (c) is a sectional view along the direction A-A;

FIG. 4 is a schematic view of the structure of the expandable tunnel fixation device of the present utility model where the locking bolt is adjusted;

FIG. 5 is a schematic view of the structure of the connecting rod in the expandable tunnel fixation device of the present utility model;

FIG. 6 is a schematic view of the structure of the connecting arm of the expandable tunnel fixation device of the present utility model;

FIG. 7 is a schematic view of the structure of a swivel arm of the expandable tunnel fixture of the present utility model;

FIG. 8 is a schematic view of the structure of an adjusting locking bolt in the expandable tunnel fixation device of the present utility model;

FIG. 9 is a schematic view of the structure of the push button in the expandable tunnel fixation device of the present utility model;

FIG. 10 is a schematic structural view of a left side pipeline retractor in the expandable tunnel fixation device of the present utility model, wherein (a) is a first structural view and (b) is a second structural view;

FIG. 11 is a schematic structural view of a right-side pipeline retractor in the expandable tunnel-fixing device according to the present utility model, wherein (a) is a first structural view and (b) is a second structural view;

fig. 12 is a schematic structural diagram of a box spanner used with the expandable channel securing apparatus of the present utility model.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

The utility model provides a fixing device capable of expanding a channel, which comprises a connectingrod 1 transversely arranged, wherein a pair of expanding brackets are connected to the connectingrod 1 in a sliding manner, the tail ends of the expanding brackets are respectively provided with apipeline drag hook 2 extending downwards, and the expanding brackets comprise a connectingarm 3 and arotating arm 4, wherein:

one end of the connectingarm 3 is connected to the connectingrod 1 in a sliding manner, and the other end of the connectingarm 3 is provided with a connectinghole 31 extending along the length direction;

one end of the rotatingarm 4 is provided with a rotatingshaft 41 which extends along the length direction and is rotatably inserted in the connectinghole 31, the other end of the rotatingarm 4 is provided with apipeline retractor 2, and a (operation) channel for an operation instrument to pass through is formed between thepipeline retractors 2;

the connectingarm 3 is provided with an adjustment locking device for driving therotation shaft 41 to rotate in the connectinghole 31 and locking therotation shaft 41 in the connectinghole 31 after the rotation.

When in use, a pair of expansion brackets are driven to slide back on the connectingrod 1, so that parallel expansion can be realized (see figure 1), and the parallel expansion range can be 22-90mm; when needed, therotation shaft 41 of therotation arm 4 can be driven to rotate in the connectinghole 31 by utilizing the adjusting and locking device, so that the angle of thepipeline drag hook 2 is deflected, the bottom sector-shaped opening (see fig. 2 and 4) is realized, the maximum opening angle of the single-sidepipeline drag hook 2 can be 20-30 degrees (particularly 26.5 degrees), and an operator can adjust the parallel opening distance and the sector-shaped opening deflection angle according to the operation requirement, so as to adjust the operation visual field.

According to the utility model, the tail ends of the supporting frames are respectively provided with the downward extending pipeline drag hooks, the supporting frames comprise the connecting arms and the rotating arms, the connecting arms are provided with the adjusting and locking devices which are used for driving the rotating shafts of the rotating arms to rotate in the connecting holes and locking the rotating shafts in the connecting holes after rotating, compared with the prior art, the parallel supporting can be realized by driving the pair of supporting frames to slide back on the connecting rods by an operator, the rotating shafts of the rotating arms are driven to rotate in the connecting holes by the adjusting and locking devices, so that the angle of the pipeline drag hooks swings, the bottom sector supporting is realized, the operator can adjust the parallel supporting distance and the sector supporting swinging angle according to the operation requirement, the operation view is adjusted, the wide operation view can be provided on the basis of reducing the operation incision as far as possible, the supporting is stable, the operation is convenient, and the operation channel can be quickly established. The utility model is mainly suitable for spine minimally invasive channel surgery, in particular to a parallel-opening and bottom fan-opening type opening channel fixing device which can open skin and muscle tissues during surgery and provide a wide operation view for the operator.

In order to facilitate the sliding of thedriving connection arm 3 on theconnection rod 1, the present utility model preferably adopts the following structural form:

as shown in fig. 3 and 5-6, the end of the connectingarm 3 near the connectingrod 1 may be provided with asliding groove 32 through which the connectingrod 1 passes, and one side of the connectingrod 1 is provided with atooth surface 11, wherein:

the connectingarm 3 is provided with a driving device for driving the connectingarm 3 to slide on the connectingrod 1 at one end close to the connectingrod 1, the connectingarm 3 is provided with agear hole 33 communicated with thesliding groove 32, the driving device is agear 34 rotationally assembled in thegear hole 33 and meshed with thetooth surface 11, and the upper end of thegear 34 is provided with an instrument driving part 35 (specifically, a plum blossom hole) extending out of thegear hole 33.

When in use, the double offset ring spanner 5 (see fig. 12) is utilized to drive theinstrument driving part 35 of thegear 34 on the left connecting arm 3 (the connecting arm positioned at the left in fig. 1-2) anticlockwise, so that thegear 34 rotates anticlockwise, thegear 34 is meshed with thetooth surface 11 of the connectingrod 1, the left connectingarm 3 is driven to move leftwards relative to the connectingrod 1, theinstrument driving part 35 of thegear 34 on the right connecting arm 3 (the connecting arm positioned at the right in fig. 1-2) is driven to move rightwards relative to the connectingrod 1 in a same way, and the parallel opening can be realized.

Further, in order to facilitate locking of the connectingarm 3 during the parallel opening process, one end of the connectingarm 3, which is close to the connectingrod 1, may be provided with a first locking device for locking the connectingarm 3, the first locking device may be aclamping button 36, the middle part of theclamping button 36 is hinged on the connectingarm 3, one end of theclamping button 36 is provided with apositioning tooth 361 meshed with thetooth surface 11, the other end is used as apressing part 362, and aspring 363 is provided between thepressing part 362 and the connectingarm 3. The first locking means is preferably a one-way locking means, i.e. thepositioning teeth 361 are one-way teeth to limit the reverse rotation of thegear wheel 34, so that the connectingarm 3 can slide on the connectingrod 1 in the opening direction (direction indicated by arrow in fig. 1) in the locked state, cannot slide in the reverse direction, and locks the connectingarm 3 in time, facilitating the operation in surgery.

When in use, thepressing part 362 of theclamping button 36 is pressed, thespring 363 is stressed and compressed, and thepositioning teeth 361 are separated from thetooth surface 11 of the connectingrod 1, so that the connectingarm 3 is in an unlocking state, and the connectingarm 3 can retract along the connectingrod 1; when the connectingarm 3 is to be locked, thepressing portion 362 of theclamp button 36 is released, and the positioningteeth 361 are again engaged with thetooth surface 11 of the connectingrod 1 by the elastic force of thespring 363, so that the connectingarm 3 is in the locked state, and at this time, thetool driving portion 35 of thegear 34 is driven by thebox spanner 5, so that the connectingarm 3 can be moved/slid unidirectionally in the expanding direction with respect to the connectingrod 1, and cannot be retracted.

The adjusting and locking device is used for driving the rotatingshaft 41 to rotate in the connectinghole 31 and locking the rotatingshaft 41 in the connectinghole 31 after rotating, and can adopt various structural forms which are easily thought by a person skilled in the art, for example, an adjusting rod which is vertical and extends to the upper part of the connectingarm 3 is fixedly arranged on therotating shaft 41, and the rotating angle of therotating shaft 41 is adjusted by pulling the adjusting rod left and right, however, for convenience in implementation, the following structural forms are preferably adopted in the utility model:

as shown in fig. 3 and 6 to 8, the side of therotating shaft 41 may be provided with ahook piece 42, and the connectingarm 3 is provided with a throughhole 37 at a position corresponding to thehook piece 42, and the adjusting and locking device is an adjusting and locking piece which is positioned in the throughhole 37 and can drive thehook piece 42 to move up and down. When the pipeline retractor is used, thehook piece 42 is driven to move up and down by the adjusting locking piece, so that the rotatingshaft 41 rotates in the connectinghole 31, and the angle of thepipeline retractor 2 is deflected, and the bottom fan-shaped opening is realized.

Further, the adjusting locking member preferably adopts the following structural form:

as shown in fig. 6-8, the throughhole 37 may be a threaded hole, the adjusting locking member is an adjusting locking bolt 38 (may be a left-handed thread) screwed in the threaded hole, thehook piece 42 is provided with aU-shaped opening 421, the lower end of the adjustinglocking bolt 38 is provided with a dumbbell-shapedplug 381 for being clamped in theU-shaped opening 421, and the upper end of the adjustinglocking bolt 38 is provided with an instrument driving part 382 (may be a quincuncial hole) extending out of the threaded hole. When the double offset ring spanner is used, theinstrument driving part 382 of the adjusting and lockingbolt 38 on theleft connecting arm 3 is rotated clockwise by the double offsetring spanner 5, theplug 381 at the lower end of the adjusting and lockingbolt 38 supports thehook piece 42 to move upwards, so that the rotatingshaft 41 rotates clockwise in the connectinghole 31, the angle of the leftpipeline drag hook 2 can be deflected, and similarly, theinstrument driving part 382 of the adjusting and lockingbolt 38 on theright connecting arm 3 is rotated clockwise by the double offsetring spanner 5, so that the rotatingshaft 41 rotates anticlockwise in the connectinghole 31, and the angle of the rightpipeline drag hook 2 can be deflected, so that the bottom fan-shaped expansion is realized.

As shown in fig. 6, the connectingarm 3 may be provided with a transversely extendingU-shaped slot 39, the bottom of theU-shaped slot 39 forms a connectinghole 31, an adjusting locking member is disposed on the upper side wall of theU-shaped slot 39, and a hookpiece avoidance slot 391 is disposed on the lower side wall of theU-shaped slot 39, so that a sufficient up-down movement space can be provided for thehook piece 42, thereby increasing the rotation angle of therotation shaft 41 in the connectinghole 31, further increasing the deflection angle of thepipe retractor 2, so as to realize a larger fan-shaped opening deflection angle, and better adjusting the surgical field.

As shown in fig. 3, 7 and 10, thepipe retractor 2 may include a retractormain body 21 and aconnection plate 22 located at the upper end side of the retractormain body 21, where a plug-inpost 23 is disposed on theconnection plate 22, one end of therotating arm 4 near thepipe retractor 2 is provided with a vertical plug-inhole 43 for accommodating the plug-inpost 23, and a second locking device for locking the plug-inpost 23 in the plug-inhole 43, so that thepipe retractor 2 is detachably connected to therotating arm 4, and asuitable pipe retractor 2 may be detached and replaced according to the operation requirement. When in use, thepipeline drag hook 2 is held, the plug-inpost 23 on the connectingplate 22 of thepipeline drag hook 2 is inserted into the plug-inhole 43 of therotating arm 4, and the plug-inpost 23 is locked in the plug-inhole 43 by the second locking device. The shape of the plug-inpost 23 may be square or triangular, and the shape of the plug-inhole 43 is adapted to the shape of the plug-inpost 23 to prevent the plug-inpost 23 from rotating in the plug-inhole 43.

The second locking means may take various forms as will be readily apparent to those skilled in the art, and for ease of implementation, the following forms are preferred:

as shown in fig. 3, 7, 9 and 10, one side of the plug-inpost 23 may be provided with aball socket 231, an inner sidewall of the plug-inhole 43 corresponding to theball socket 231 is provided with asteel ball hole 431, and the second locking device includes asteel ball 44 located in thesteel ball hole 431 and matched with theball socket 231, and abutton 45 for driving thesteel ball 44;

therotary arm 4 is provided with abutton mounting hole 46 communicated with thesteel ball hole 431, thebutton 45 comprises a buttonmain body 451 slidably connected in thebutton mounting hole 46 and abutton pressing portion 452 positioned outside thebutton mounting hole 46, and the end of the buttonmain body 451 is provided with anannular groove 453 for accommodating thesteel ball 44.

When the push button is used, thebutton pressing part 452 of thepush button 45 is driven, the buttonmain body part 451 slides in thebutton mounting hole 46, when theannular groove 453 at the tail end of the buttonmain body part 451 is opposite to thesteel ball hole 431, thesteel ball 44 can be contained in theannular groove 453, and the second locking device is in an unlocking state, so that the plug-incolumn 23 of thepipeline drag hook 2 can be smoothly inserted into/pulled out; when the plug-inpost 23 is required to be locked, thebutton pressing part 452 of thebutton 45 is driven to stagger theannular groove 453 at the tail end of the buttonmain body part 451 and thesteel ball hole 431, thesteel ball 44 protrudes out of the inner side wall of the plug-inhole 43 under the extrusion of the rod part of the buttonmain body part 451 and is clamped into theball socket 231 of the plug-inpost 23, and the second locking device is in a locking state to lock the plug-inpost 23 in the plug-inhole 43.

Further, as shown in fig. 3 and 9, a limitinggroove 454 extending along the length direction of the buttonmain body 451 may be provided at the middle of the buttonmain body 451, apin hole 47 is provided at a position on therotation arm 4 corresponding to the limitinggroove 454, and a limitingpin 48 is provided in the limitinggroove 454 and thepin hole 47 in a penetrating manner, so as to prevent thebutton 45 from being separated from thebutton mounting hole 46. Aspring 49 may be provided between the end of thebutton body part 451 and the bottom wall of thebutton mounting hole 46 to facilitate quick locking and unlocking. At this time, the pushbutton pressing part 452 is pressed, thespring 49 is compressed under force, theannular groove 453 is matched with thesteel ball hole 431, and the second locking device is in an unlocking state, so that the pluggingcolumn 23 of thepipeline drag hook 2 can be smoothly plugged in/pulled out; when the plug-inpost 23 is required to be locked, thebutton pressing part 452 is released, theannular groove 453 is staggered with thesteel ball hole 431 under the elastic force of thespring 49, and the second locking device is in a locking state so as to lock the plug-inpost 23 in the plug-inhole 43.

As shown in fig. 10-11, theretractor body 21 is preferably semi-circular in shape that can be snapped into one another. Theretractor body 21 may be provided with apositioning pinhole 24, and specifically, the positioningpinhole 24 may be located at a connection end of theretractor body 21 and theconnection plate 22, so as to facilitate the penetration of a fixing needle, and increase the stability of thepipeline retractor 2.

The length of the retractormain body 21 can be in various specifications of 50-180mm, specifically, as shown in fig. 10 (a) and fig. 11 (a), the retractormain body 21 has a longer length (specifically, can be 100-180 mm), and the retractormain body 21 is preferably provided with apositioning pinhole 24 to increase the stability of thepipeline retractor 2, so that the retractor is suitable for the OLIF and PLIF operation modes; as shown in fig. 10 (b) and 11 (b), the length of theretractor body 21 is relatively short (specifically, 50-80mm may be used), and theretractor body 21 is not provided with apositioning pinhole 24, which is suitable for the TLIF operation type.

As shown in fig. 10 (a), the connection end of theconnection plate 22 and theretractor body 21 may be provided with alight source hole 25 to conveniently accommodate a light source (e.g., an LED lamp). The middle part of the connectingplate 22 can be hinged with apressing plate 26, and atorsion spring 29 is arranged on the hinge shaft of thepressing plate 26, so that pressure is provided by thetorsion spring 29 to prevent the light source line from falling off. The inner side of the connectingplate 22 of onepipe drag hook 2 can be provided with apositioning groove 27, and the inner side of the connectingplate 22 of the otherpipe drag hook 2 is provided with a positioningconvex rib 28 matched with thepositioning groove 27, so that when the two pipe drag hooks are buckled/closed, the two pipe drag hooks 2 are conveniently positioned and connected. As shown in fig. 5, both ends of the connectingrod 1 may be provided withU-shaped grooves 12 for connection with external fixing arms, so as to facilitate connection with the fixing arms of the external positioning device, so that the expandable channel fixing device of the present utility model is kept stable.

In summary, the utility model provides a device for fixing a channel which can stably and parallelly open and fan-shaped open at the bottom, can realize bidirectional adjustment in operation to open skin and muscle tissues, can adjust the parallel opening distance and fan-shaped opening deflection angle by using a double offset ring spanner according to operation requirements on the basis of minimizing operation incision, can meet the operation requirements of OLIF, TLIF, PLIF different operation types by simultaneously providing a pipeline drag hook, realizes a complete minimally invasive spinal channel operation scheme, is convenient to operate, can quickly establish an operation channel, and provides a wide operation field for operators.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.

Claims (10)

1. The utility model provides a can strut passageway fixing device, its characterized in that, including the connecting rod of horizontal setting, sliding connection has a pair of support that struts on the connecting rod, the end of strut all is equipped with downwardly extending's pipeline drag hook, strut the support and all include linking arm and swinging boom, wherein:

one end of the connecting arm is connected to the connecting rod in a sliding way, and the other end of the connecting arm is provided with a connecting hole extending along the length direction of the connecting arm;

one end of the rotating arm is provided with a rotating shaft which extends along the length direction and is rotatably inserted into the connecting hole, the other end of the rotating arm is provided with the pipeline drag hook, and a channel for an operation instrument to pass through is formed between the pipeline drag hooks;

the connecting arm is provided with an adjusting locking device which is used for driving the rotating shaft to rotate in the connecting hole and locking the rotating shaft in the connecting hole after the rotating shaft rotates.

2. The expandable tunnel fixation device of claim 1 wherein one end of the connecting arm near the connecting rod is provided with a sliding groove for the connecting rod to pass through, one side of the connecting rod is provided with a tooth surface, wherein:

the connecting arm is provided with a driving device for driving the connecting arm to slide on the connecting rod, the connecting arm is provided with a gear hole communicated with the sliding groove, the driving device is a gear rotationally assembled in the gear hole and meshed with the tooth surface, and the upper end of the gear is provided with an instrument driving part extending out of the gear hole;

and/or, one end of the connecting arm, which is close to the connecting rod, is provided with a first locking device for locking the connecting arm, the first locking device is a clamping button, the middle part of the clamping button is hinged on the connecting arm, one end of the clamping button is provided with a positioning tooth meshed with the tooth surface, the other end of the clamping button is used as a pressing part, and a spring is arranged between the pressing part and the connecting arm.

3. The expandable tunnel fixing device according to claim 1 or 2, wherein a hook piece is provided on a side surface of the rotation shaft, a through hole is provided at a position on the connection arm corresponding to the hook piece, and the adjustment locking device is an adjustment locking piece which is located in the through hole and can drive the hook piece to move up and down.

4. The expandable channel fixing device according to claim 3, wherein the through hole is a threaded hole, the adjusting locking piece is an adjusting locking bolt which is in threaded connection with the threaded hole, a U-shaped opening is formed in the hook piece, a dumbbell-shaped plug which is used for being clamped in the U-shaped opening is arranged at the lower end of the adjusting locking bolt, and an instrument driving part which extends out of the threaded hole is arranged at the upper end of the adjusting locking bolt.

5. The expandable tunnel fixation device according to claim 3, wherein the connecting arm is provided with a transversely extending U-shaped slot, the bottom of the U-shaped slot forms the connecting hole, the upper side wall of the U-shaped slot is provided with the adjusting locking member, and the lower side wall of the U-shaped slot is provided with a hook piece avoiding slot.

6. The expandable tunnel fixation device according to claim 3, wherein the pipe retractor comprises a retractor body and a connecting plate located on the upper end side surface of the retractor body, a plug-in post is arranged on the connecting plate, and a plug-in hole for vertically accommodating the plug-in post and a second locking device for locking the plug-in post in the plug-in hole are arranged at one end of the rotating arm, which is close to the pipe retractor.

7. The expandable passage fixing device according to claim 6, wherein a ball socket is arranged on one side of the plug-in column, a steel ball hole is arranged on an inner side wall of the plug-in hole corresponding to the ball socket, and the second locking device comprises steel balls which are positioned in the steel ball hole and matched with the ball socket, and a button for driving the steel balls;

the rotary arm is provided with a button mounting hole communicated with the steel ball hole, the button comprises a button main body part which is slidably connected in the button mounting hole and a button pressing part which is positioned outside the button mounting hole, and the tail end of the button main body part is provided with an annular groove for accommodating the steel ball.

8. The expandable passage fixing device according to claim 7, wherein a limiting groove extending along the length direction of the button main body is formed in the middle of the button main body, a pin hole is formed in a position, corresponding to the limiting groove, on the rotating arm, and a limiting pin is arranged in the limiting groove and the pin hole in a penetrating manner;

and/or a spring is arranged between the tail end of the button main body part and the bottom wall of the button mounting hole.

9. The distractable channel fixation device of claim 6, wherein the retractor body is semi-circular to enable mutual engagement;

and/or the drag hook main body is provided with a positioning pinhole.

10. The expandable passage fixation device of claim 6 wherein a light source hole is provided at a connection end of the connection plate and the retractor body;

and/or the middle part of the connecting plate is hinged with a pressing plate, and a torsion spring is arranged on a hinge shaft of the pressing plate;

and/or the inner side of the connecting plate of one pipeline drag hook is provided with a positioning groove, and the inner side of the connecting plate of the other pipeline drag hook is provided with a positioning convex rib matched with the positioning groove;

and/or both ends of the connecting rod are provided with U-shaped grooves for being connected with an external fixing arm.

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