CN114305698A

CN114305698A - Silk thread auxiliary movement device, driving system and control method

Info

Publication number: CN114305698A
Application number: CN202111633001.6A
Authority: CN
Inventors: 金慧杰; 史鼎盛; 夏良道; 于成凯
Original assignee: Hangzhou Jialiang Medical Technology Co ltd
Current assignee: Hangzhou Jialiang Medical Technology Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-04-12

Abstract

The invention relates to a silk thread auxiliary movement device, a driving system and a control method, and belongs to the technical field of ablation operation devices. A silk thread auxiliary motion device comprises a frame, a linear motion assembly and a rotary motion assembly, wherein the rotary motion assembly is movably arranged in a ring neck of the linear motion assembly, and an optical fiber catheter is detachably connected with the rotary motion assembly; the silk thread auxiliary motion device also comprises a driving component, and a linear transmission wire and a rotary transmission wire are wound on the driving component; one end of the linear transmission wire is wound on the linear motion assembly, and one end of the rotary transmission wire is wound on the rotary motion assembly; the linear transmission wire is used for driving the linear motion assembly to do linear motion; the rotary transmission wire is used for driving the rotary motion assembly to rotate. The invention realizes the simultaneous linear motion and rotary motion of the optical fiber conduit, and in addition, the linear and rotary transmission can be completed by one motor, thereby simplifying the structure of the device.

Description

Silk thread auxiliary movement device, driving system and control method

The invention relates to the technical field of ablation operation devices, in particular to a silk thread auxiliary movement device, a driving system and a control method.

Background

The medical robot is a novel cross research field integrating multiple subjects of medicine, biomechanics, mechanics, materials science, computer graphics, computer vision, mathematical analysis, robots and the like, and is a research hotspot in the current domestic and foreign robot fields. The medical robot which is most commonly used in the field of neurosurgery is also called a surgical robot, and in a surgical robot system, an auxiliary robot occupies nearly 17% of the surgical operation, and becomes one of common auxiliary equipment in daily surgical operation. With the continuous development of the technology, the surgical robot will develop toward miniaturization, specialization, low cost, intellectualization and automation, and will lead the minimally invasive surgery to enter a new era.

MRgLITT is taken as an example, and is a short name of a laser interstitial thermotherapy technology guided by magnetic resonance imaging, the technology can realize real-time thermotherapy on pathological change tissues (brain tumor, epileptic focus, radioactive necrosis and the like) with the help of intraoperative magnetic resonance, the pathological change tissues are accurately destroyed through proper and safe temperature and thermotherapy range, and normal brain tissues and nerve vessel structures around pathological changes are not destroyed, so that the technology is a brand-new minimally invasive brain tumor therapy technology. Generally, before the thermal therapy is performed, the insertion depth, the light emitting direction or angle, etc. of a laser transmission device (such as a fiber optic catheter) are planned, and during the operation, the acting position and the light emitting direction or angle of the fiber optic catheter are also adjusted in real time under the guidance of magnetic resonance, so as to achieve the purpose of conformal ablation. Therefore, in the laser ablation, the control of the movement position of the fiber optic catheter has higher precision requirement.

Currently, mrgltt technology is still in the development stage, but the following problems still exist in the existing surgical assistant robot in the close or other fields, so that it cannot be directly used in the laser ablation: firstly, no mature auxiliary tool is available in China, and the auxiliary tool is suitable for a magnetic resonance environment and can accurately control the motion track of the optical fiber catheter. Secondly, the driving source of the existing surgical auxiliary device is manually operated or driven by a driving mechanism. The manual operation has the disadvantages that the manual control precision of the optical fiber catheter can only reach 1mm at most, and is far from the control precision (usually less than 0.5mm) required by the laser ablation operation; and the manual adjustment mode can prolong the operation time, and the risk brought to the patient is relatively large. The auxiliary robot with the automatic driving mechanism is more advantageous than manual regulation and control in precision, but the existing driving mechanism is generally integrally designed on the surgical auxiliary robot, and the operation of the driving mechanism can influence the scanning precision of MRI, so that scanned images generate noise artifacts and the like, and certain obstruction is brought to subsequent real-time analysis. Considering that the LITT technology is in the initial development and application stage, the position control of the optical fiber catheter still needs to be performed by two legs, the manual control precision can meet the operation requirement, the full-automatic driving under the magnetic resonance environment can be met, and no operation auxiliary robot capable of achieving double-precision control and capable of achieving manual control and full-automatic control exists at present so as to meet the high-precision operation requirement. The existing surgery auxiliary robot in the similar field has a complex structure and large volume and weight, if the robot is used in a laser ablation surgery, a headstock and a gripper must be additionally used for fixing, which may cause that a fixing device for limiting the moving track of the optical fiber catheter is additionally arranged on the path of the optical fiber catheter entering a target area, and once the positioning of the fixing device deviates, the implementation of a clinical surgery path is influenced, which brings inconvenience to an operator; and the use of the holder can easily damage the surgical instrument. Fifth, the existing surgery auxiliary robot in the similar field has a complex structure of a device for realizing linear and/or rotational movement, which is usually realized by various combination designs among a plurality of parts, the transmission of multiple parts is easy to reduce the force transmission precision, and the device is easy to have problems in the operation process, thereby greatly reducing the operation stability and reliability of the surgery auxiliary robot.

Therefore, it is necessary to develop a dual-precision surgical assistant robot which is more intelligent, safer, less in error, capable of assisting medical care personnel and capable of realizing high-precision control under the guidance of magnetic resonance.

Disclosure of Invention

In view of the above analysis, the present invention aims to provide a wire motion assisting device, a driving system and a control method, which are used for realizing high-precision control requirements under the control of a dual-driving source by a simple structure, can complete precise control of the orientation of a surgical instrument only by matching with a skull nail, and can be applied to a nuclear magnetic environment.

The purpose of the invention is mainly realized by the following technical scheme:

a wire-assisted exercise device comprising:

the linear motion assembly is arranged on the rack and is connected with the rack in a sliding manner; the linear motion assembly comprises a collar;

the rotary motion assembly is movably arranged in the ring neck;

the driving assembly comprises a linear driving wire and a rotary driving wire which are wound on the driving assembly, the linear driving wire is wound on the linear motion assembly, and the rotary driving wire is wound on the rotary motion assembly; the linear transmission wire is used for driving the linear motion assembly to do linear motion; the linear motion assembly can drive the rotary motion assembly to perform linear motion; the rotary transmission wire is used for driving the rotary motion assembly to rotate, and the rotary motion assembly can drive the optical fiber guide pipe to rotate.

Furthermore, a third fixed through hole and a third movable through hole which are arranged in parallel are formed in the linear motion assembly; one side of the linear transmission wire penetrates through and is fixed on the third fixed through hole, the other side of the linear transmission wire penetrates through the third movable through hole, and the linear transmission wire can freely move in the third movable through hole.

Furthermore, the rotary motion assembly comprises an optical fiber catheter fixing part, the optical fiber catheter fixing part is movably arranged in the ring neck, and a guide wheel is movably arranged at a notch of the ring neck; one end of the rotary transmission wire is wound and fixed on the optical fiber conduit fixing part, and the other end of the rotary transmission wire is wound on the driving component after passing through the guide wheel.

Furthermore, a circumferential groove is formed in the optical fiber conduit fixing part, at least one positioning column is arranged on the circumferential groove, and the rotary transmission wire is fixed to the positioning column.

Further, the drive assembly includes a first manual adjustment portion and a second manual adjustment portion; the first manual adjusting part comprises a first rotating shaft and a first rotating wheel which are fixedly connected, and the linear transmission wire is wound on the first rotating wheel; the second manual adjusting part comprises a second rotating shaft and a second rotating wheel which are fixedly connected, and the second rotating wheel is wound with the rotating transmission wire; the first rotating shaft can drive the linear motion assembly to perform linear motion, the second rotating shaft can drive the rotary motion assembly to perform rotary motion, and the rotary motion assembly can drive the optical fiber conduit to perform rotary motion.

Further, the driving assembly further comprises a first driving device and a second driving device; the first driving device is detachably connected with the first rotating shaft; the second driving device is detachably connected with the second rotating shaft.

Further, the frame comprises a guide part, a front cover and a rear cover; the guide part comprises a guide rail arranged between the front cover and the rear cover, a guide rail guide groove is formed in the linear motion assembly, and the guide rail is connected with the guide rail guide groove in a sliding mode.

Further, a position sensor is arranged on the motion assembly.

Furthermore, a fixing part is arranged on the front cover of the rack, and is provided with a through hole which penetrates axially and is fixedly connected with the skull nail.

The robot is characterized by comprising a communication module, a processing module and the wire auxiliary motion device, wherein the remote control system is electrically connected with the robot and used for controlling the motion of the fiber guide tube in the wire auxiliary motion device.

Further, the driving assembly is directly driven to operate manually or remotely and automatically so as to drive the linear motion assembly and the rotary motion assembly to perform linear motion and/or rotary motion.

Compared with the prior art, the invention can realize at least one of the following beneficial effects:

(1) under the drive of the second drive device, the optical fiber guide pipe in the rack performs self-rotation motion through the rotation motion assembly, and under the drive of the first drive device, the linear motion assembly drives the rotation motion assembly arranged on the linear motion assembly to perform synchronous linear motion, so that the optical fiber guide pipe, the rotation motion assembly and the linear motion assembly realize the synchronism of the linear motion, and the optical fiber guide pipe can perform linear motion and rotation motion in the rack at the same time.

(2) The linear driven motion part comprises a rotary motion component and a cover plate, wherein the rotary motion component is arranged in the linear driven motion part, so that synchronous linear position motion output of the rotary motion component and the linear motion component is realized.

(3) The linear driven movement part is matched with the cover plate, a cavity is arranged in the linear driven movement part, and is matched with the rotary movement assembly, so that the cavity is used for containing the rotary movement assembly and has fixing and limiting effects, the optical fiber conduit in the rotary movement assembly realizes linear movement output and self rotation, and deviation in other directions is not generated, and the accuracy of the whole operation is improved

(4) According to the invention, the outer circumference of the tail end of the positioning rib is provided with the arc-shaped convex part, the outer diameter of the positioning rib is equal to the diameter of the positioning rib matching groove, and the diameter of the arc-shaped convex part is larger than that of the positioning rib matching groove, so that the arc-shaped convex part can be clamped on the outer wall of the positioning rib matching groove, the optical fiber conduit and the rotary motion assembly are mutually clamped and fixed together, the situation of slipping or shifting cannot occur, and the concentric position of the optical fiber conduit is ensured.

(5) The fixing part is provided with a through hole, one end of the fixing part is fixedly arranged on one side of the rack, and the through hole and the optical fiber conduit fixing part are coaxially arranged; the other end of the device is detachably connected with a skull nail, a head coil and other supporting parts used for fixing the device on the head, and the operation channel established by the skull nail is ensured to be coaxial with the through hole, so that the direction accuracy of linear motion is ensured, and the device has a wider application range.

(6) The guide part comprises two guide rails which are symmetrically arranged on two sides of the upper side of the rack respectively, the guide rails are matched with guide rails on a linear motion assembly, and the linear motion assembly linearly moves on the guide rails in the same direction as the optical fiber guide pipe through a first driving device, so that the linear motion assembly can move directionally, namely the guide rails play a role in positioning and orienting the movement of the optical fiber guide pipe.

(8) The invention has two driving sources for controlling the optical fiber conduit to realize linear and/or rotary motion, which can be fully automatic control or manual control, and can select proper driving source to perform adaptive change to the position of the optical fiber conduit according to the requirement and the requirement at any time. And no matter be full automatic control or manual control all can have position sensor signal output in order to guarantee the accuracy of fiber conduit motion, maneuverability is changeable, and the range of application is wider.

(9) The moving assembly of the invention is preferably made of non-metallic materials, the sorting weight is light, the MR image quality is not influenced, the overall weight can be less than 40g, and the device is light and can be used together with a head coil. The driving part is fixed and is far away from the moving part, and is fixed on a specific bed body support platform, so that the operation is firm and convenient. Meanwhile, the method is not in the MR scanning area and does not influence the image quality.

(10) The first driving wheel and the second driving wheel are driven by the same driving motor, the switching device is arranged in the driving motor, and the rotating force of the motor can be respectively distributed to the first driving wheel or the second driving wheel through the switching device, so that the motion output of the linear motion assembly and the rotary motion assembly is realized, the structure is simple and convenient, the cost is low, and the energy consumption is low.

(11) The invention is also provided with a circular ring-shaped ruler belt and a rotary position sensor, and the circular ring-shaped ruler belt and the rotary position sensor are used for feeding back the rotary motion of the rotary motion component, namely the rotary motion of the optical fiber conduit. The linear motion assembly is also provided with a linear position sensor and a straight ruler belt, the linear position sensor is used for feeding back the linear output motion of the linear motion assembly, namely the linear motion of the optical fiber catheter, so that an operator can perform the next ablation operation according to the fed-back linear/rotary motion condition

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is a first schematic view of a system of a device for assisting in the movement of a silk thread according to the present invention;

FIG. 2A is a side cross-sectional view of the first motion assembly of the present invention;

FIG. 2B is an exploded view of the first moving element of the present invention;

FIG. 2C is an exploded view of the moving component of the present invention;

FIG. 3 is a top cross-sectional view of the wire assist movement device of the present invention;

FIG. 4A is a side cross-sectional view of the motion assembly of the present invention;

FIG. 4B is a side cross-sectional view of the motion assembly of the present invention;

FIG. 4C is a side cross-sectional view of the motion assembly of the present invention;

FIG. 4D is a side cross-sectional view of the motion assembly of the present invention;

FIG. 5 is a schematic view of a fiber optic catheter securement portion of the present invention;

FIG. 6A is a schematic view of the connection between the fixing portion of the optical fiber conduit and the optical fiber conduit according to the present invention;

FIG. 6B is an unassembled perspective view of the fiber optic catheter securing portion of the present invention;

FIG. 6C is a schematic view of a fiber optic catheter securing portion assembly of the present invention;

FIG. 7 is a schematic view of a manual adjustment portion according to the present invention;

FIG. 8A is a side view of the first drive assembly configuration of the present invention;

FIG. 8B is a second testing chart of the driving device structure according to the present invention;

FIG. 8C is a third testing diagram of the driving device structure according to the present invention;

FIG. 9A is a first schematic structural diagram of a driving assembly according to the present invention;

FIG. 9B is a schematic structural diagram of a driving assembly according to the present invention;

FIG. 9C is a third schematic structural view of a driving assembly according to the present invention;

FIG. 10A is a schematic view of a second embodiment of the present invention;

FIG. 10B is a schematic view of the system of the device for assisting exercise with silk threads according to the present invention;

FIG. 11A is a first schematic diagram of a remote control system according to the present invention;

fig. 11B is a second schematic diagram of the remote control system of the present invention.

Reference numerals:

the optical fiber guiding device comprises a frame 1, a linear motion component 2, a linear drive wire 21, a linear driving motion part 22, a linear driven motion part 23, a guide rail guide groove 24, a through hole 230, a ring neck 231, a notch 2310, a linear position sensor 25, a straight edge belt 26, a rotary motion component 3, a rotary drive wire 31, a guide wheel 32, an optical fiber guide tube 4, an optical fiber fixing part 41, an optical fiber 42, a positioning rib 410, an arc convex part 4101, an optical fiber guide tube fixing part 5, an optical fiber guide tube fixing part 51, a first concave cavity 511, a second concave cavity 512, a boss 513, a positioning groove 514, a circular groove 5141, a positioning rib matching groove 5142, an annular groove 5120, an optical fiber guide tube fixing part 52, a clamping inner block 521, a branch end 5211, a convex part 5212, a clamping outer block 522, a circular hole 5221, a positioning rib 5222, an arc convex part 5223, a circular ring-shaped ruler belt 53, a rotary position sensor 54, a fixing part 6, a through hole 60, a fixing hole 61, a guide part 7 and a guide rail 71, the wire winding device comprises a bottom cover 11, a rear cover 12, a first through hole 121, a front cover 13, a second through hole 131, a wire rotating part 130, an arc-shaped groove 1301, a cover plate 232, a first hole 2320, a connecting arm 2321, a connecting hole 2322, a first driving device 8, a second driving device 9, a first driving wheel 80, a second driving wheel 90, a third through hole 220, a third fixing through hole 221, a third movable through hole 222, a fourth through hole 1201, a first housing 100, a first manual adjusting part 100A, a second manual adjusting part 100B, an accommodating cavity a, an accommodating cavity B, a second housing 200, a first rotating shaft 101, a first rotating wheel 102, a second rotating shaft 103, a second rotating wheel 104, a third housing 300, a sliding groove 10A, a sliding part 20A, a fixing part 20B, a first opening 300A, a second opening 300B, a marking ruler 300C, a holding part 1011, a groove 1021, a guide projection 1021a and a rotation damper 101 a.

Detailed Description

A wire assist exercise device, a drive system and a control method are described in further detail below with reference to specific embodiments, which are provided for purposes of comparison and explanation only and to which the present invention is not limited.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.

The general working surface of the invention can be a plane or a curved surface, can be inclined or can be a straight line. For convenience of explanation, the embodiment of the present invention is placed on and used on a straight surface, and "high and low" and "up and down" are defined herein.

As shown in fig. 1, 10A and 10B, the present invention provides a wire motion assist apparatus, which has a dual driving source for manual control and full-automatic control, and is made of a nuclear magnetic compatible material as a whole, and the full-automatic control driving device is preferably an ultrasonic motor, so that the motion assist apparatus can be used in a magnetic resonance environment, and can realize high-precision control of the motion of an interventional surgical instrument under the guidance of magnetic resonance. The auxiliary movement device comprises a frame 1 and a movement assembly arranged on the frame 1. The motion assembly is used for driving the interventional surgical instrument to complete linear motion and rotary motion under the driving of a driving force. Further, the motion assembly includes a linear motion assembly 2 and a rotary motion assembly 3, and the linear motion assembly 2 and the rotary motion assembly 3 may be integrally arranged or may be detachably arranged in a split manner, which is not limited herein.

Furthermore, the linear motion assembly 2 can drive the rotary motion assembly 3 to perform linear motion together under the driving of a driving force; in addition, the rotary motion assembly 3 can rotate relative to the linear motion assembly 2 under the driving of the driving force, and the rotary motion assembly 3 can drive the interventional surgical instrument to rotate together. The driving force is derived from manual driving control or full-automatic driving control.

The structure, function and effect of the present invention will be described in detail below by taking the mrgltt technique and the optical fiber guide tube applied to the mrgltt technique as examples.

Example 1

The invention provides an auxiliary movement device which comprises a movement assembly and a driving assembly, wherein the movement assembly and the driving assembly are arranged in a split mode, a certain arrangement distance is reserved between the movement assembly and the driving assembly in actual use, namely the driving assembly is arranged far away from a nuclear magnetic main body or a magnetic resonance chamber, the influence of the driving assembly on a magnetic resonance imaging and temperature measuring technology is avoided, the weight of the movement assembly is lightened, the size and the weight of the movement assembly are reduced to the minimum, and the movement assembly can be fixedly connected with a skull nail without an additional fixing device. Furthermore, the drive means of the drive assembly is preferably an ultrasonic motor suitable for use in a nuclear magnetic environment.

Referring to fig. 1 and fig. 2A to fig. 2C, the motion assembly includes a linear motion assembly 2 and a rotary motion assembly 3; the linear motion assembly 2 and the rotary motion assembly 3 are arranged on the frame 1. Specifically, the linear motion assembly 2 includes a linear driving wire 21, a linear driving motion part 22, and a linear driven motion part 23. The linear driving portion 22 and the linear driven portion 23 are disposed on the same vertical plane, the linear driving portion 22 is disposed below the linear driven portion 23, guide rail guide grooves 24 are symmetrically disposed on two sides of a connection portion of the linear driving portion 22 and the linear driven portion 23, and preferably, the linear driving portion 22, the linear driven portion 23, and the guide rail guide grooves 24 are integrally formed.

Referring to fig. 3, the frame 1 is a rectangular frame structure having two opposite sides with a relatively long length and two opposite sides with a relatively short length. More specifically, the upper part of two relatively longer opposite sides of the frame 1 is provided with a guide part 7, and the lower part is provided with a bottom cover 11; the frame 1 has two opposite sides with a short length, a front cover 13 on one side and a back cover 12 on the other side. The front cover is provided with a fixing part 6. The guide part 7 comprises two guide rails 71, and the guide rails 71 are respectively symmetrically arranged on two sides of the upper parts of two relatively long opposite sides of the frame 1. Further, both ends of the guide rail 71 are connected to the front cover 13 and the rear cover 12, respectively. The guide rail 71 is slidably arranged in cooperation with the guide rail guide groove 24 to movably arrange the linear motion assembly 2 on the frame 1. Preferably, the fixing portion 6 and the front cover 13 are integrally formed, and the fixing portion 6 is provided with a through hole 60 penetrating in the axial direction and a fixing hole 61 vertically arranged and communicated with the through hole 60. The fixing part 6 is used for fixedly connecting with the skull nail to form a skull surgery channel for the penetration of surgical instruments, such as the optical fiber conduit 4. More preferably, the guide rail 71 and the guide rail guide groove 24 are not essential components in the present invention, and the arrangement of the guide rail 71 and the guide rail guide groove 24 can more accurately limit the motion track of the linear motion assembly 2 on a straight line, so as to perform positioning and orientation motion. As shown in fig. 4C, in a preferred embodiment of the present invention, in order to make the operation of the linear motion assembly 2 more smooth, two through holes for passing guide shafts may be further formed on the linear active motion part 22, and both ends of the guide shafts are fixed to the rear cover 12 and the front cover 13. The fixing mode of the guide shaft is not described in detail again for the prior art.

The rear cover 12 is provided with two first through holes 121 through which the linear transmission wires 21 can pass, and the two first through holes 121 are respectively arranged in bilateral symmetry; preferably, the two first through holes 121 are located on the same horizontal plane. Symmetrically, two second through holes 131 are formed in the front cover 13, and the two second through holes 131 are respectively arranged in a left-right symmetrical manner; preferably, the two second through holes 131 are in the same horizontal plane; the two first through holes 121 are respectively matched with the two second through holes 131; preferably, the first through holes 121 are disposed on the same horizontal plane and are correspondingly disposed coaxially; so that the linear driving wire 21 can pass through the two first through holes 121 and the two second through holes 131 to form two linear driving wires 21 parallel to each other and the bottom cover 11. Furthermore, an arc-shaped wire revolving part 130 protrudes outwards from the front cover 13 between the two second through holes 131, and the wire revolving part 130 is provided with an arc-shaped groove 1301. Preferably, the center of the arc-shaped groove 1301 is located at the same horizontal plane as the center of the second through hole 131.

Referring to fig. 4A to 4D, the linear motion assembly 2 is further provided with two third through holes 220, the third through holes 220 include a third fixed through hole 221 and a third movable through hole 222, the two third through holes 220 are horizontally arranged, and the opening direction of the two third through holes 220 is the same as the moving direction of the linear active motion part 22. The two first through holes 121, the two second through holes 131 and the two third through holes 220 are mutually on the same straight line surface and are correspondingly and coaxially arranged.

Specifically, the third movable through hole 222 is a frictionless movable through hole, more preferably, the third movable through hole 222 is a non-closed through hole or the third movable through hole 222 may be an open groove (as shown in fig. 4A), the linear driving wire 21 is not in contact with the hole wall of the third movable through hole 222, and the linear driving wire 21 can move freely in the third movable through hole 222. The linear driving wire 21 passes through the third fixing through hole 221 and is fixed to the linear driving part 22, so that the linear driving part 22 can synchronously move in the same direction along with the moving direction of the linear driving wire 21. Further, the fixing manner of the linear driving wire 21 and the linear driving part 22 is not exclusive, and the linear driving wire 21 may be wound around the third fixing through hole 221 to fix the linear driving wire 21 and the linear driving part 22. Of course, the linear driving wire 21 may be fixed to the linear driving part 22 by bonding with glue or the like.

Specifically, the linear driving wire 21 sequentially passes through the first through hole 121, the third fixed through hole 221 and the second through hole 131 on the same side, so that the linear driving wire 21 turns from the wire turning part 130 and then passes through the front cover 13, and the linear driving wire 21 sequentially passes through the second through hole 131, the third movable through hole 222 and the first through hole 121 on opposite sides and then passes through the rear cover 12. The linear driving wire 21 is fixed with one end of the third fixing through hole 221, so that the linear driving wire drives the linear driving part 22 to synchronously move in the same direction. Further, one end, far away from the rack 1, of the linear transmission wire 21 is in transmission connection with a driving device, and the driving device drives the linear transmission wire 21 to move, so that the linear driving part 22 is driven to output linear motion.

Referring to fig. 4A to 4D and 5, the rotary motion assembly 3 includes a rotary driving wire 31, a guide wheel 32 and an optical fiber conduit fixing portion 5, a circumferential groove 33 is formed on the periphery of the optical fiber conduit fixing portion 5, an accommodating groove 331 and a positioning post 332 are disposed on the circumferential groove 33, the rotary driving wire 31 continuously surrounds the circumferential groove 33 for a plurality of turns, one turn of the rotary driving wire passes through the accommodating groove 331 and bypasses the positioning post 332, and the rotary driving wire 31 achieves an anti-slip effect through the accommodating groove 331 and the positioning post 332 in the motion process. Furthermore, the receiving groove 331 is not a necessary component, that is, only the positioning post 332 may be disposed on the circumferential groove 33, and the rotary transmission wire 31 continuously surrounds the circumferential groove 33 for a plurality of turns, wherein one turn is wound around and fixed on the positioning post 332, so as to prevent the rotary transmission wire 31 from slipping during the movement. Furthermore, a point of the rotating transmission wire 31 is fixed to the accommodating groove 331 by a fixing method such as gluing, which is equivalent to ensuring that a point on the rotating transmission wire 31 is fixed and does not move relative to the optical fiber conduit fixing part 5, so that the rotating motion component 3 is driven by the movement of the transmission wire 31 to synchronously rotate.

In embodiment 1 of the present invention, the rotary motion assembly 3 is movably connected to the linear driven motion part 23 of the linear motion assembly 2, and specifically designed as follows:

referring to fig. 2A to C and fig. 4A to 4D again, a through hole 230 is formed on the linear driven portion 23, a ring neck 231 is disposed around the through hole 230, and the optical fiber catheter fixing portion 5 is movably disposed in the ring neck 231. Preferably, the diameter of the annular neck 231 is larger than that of the through hole 230, and the diameter of the annular neck 231 matches with that of the fiber-optic catheter fixing part 5, so as to realize the rotation of the fiber-optic catheter fixing part 5 in the annular neck 231. The ring neck 231 is a non-closed ring, and a notch 2310 is formed in the lower portion of the ring neck. The guide wheel 32 is movably arranged at the notch 2310 of the ring neck 231. The guide wheel 32 is a variable diameter cylinder to prevent two paths of the rotary transmission wires 31 forming a closed loop from being wound together in a crossed manner, so that the movement precision of the rotary movement assembly 3 is influenced. Meanwhile, the guide wheel 32 has a guiding function, and winds the optical fiber conduit fixing part 5 in the vertical direction, so that the rotary transmission wire 31 is converted into the horizontal direction, and therefore the rotary transmission wire 31 can be converted into acting force in the vertical direction through the guiding of the guide wheel 32 after being driven by the horizontal direction, and further the rotary motion of the optical fiber conduit fixing part 5 is realized. Further, one end of the rotary transmission wire 31, which is far away from the rack 1, is in transmission connection with a driving assembly through two fourth through holes 1201 formed in the rear cover 12, and the driving assembly drives the rotary transmission wire 31 to move, so that the optical fiber conduit fixing part 5 is driven to output rotary motion. Further, the rotating transmission wire 31 bypassing the circumferential groove 33 bypasses the guide wheel 32 and is in transmission connection with the driving device, and the rotating transmission wire 31 drives the rotating motion component 3 to rotate through the driving of the driving device, so as to drive the optical fiber conduit 4 fixed on the optical fiber conduit fixing part 5 to perform synchronous and same-direction rotating motion.

Furthermore, in order to enhance the motion stability of the rotary motion assembly 3, a cover plate 232 matching with the linear driven motion part 23 and the collar 231 is fixedly arranged on the periphery of the collar 231. The cover plate 232 is provided with a first hole 2320, the first hole 2320 is opened at a position corresponding to the collar 231, and the diameter of the first hole 2320 is smaller than that of the fiber-optic catheter fixing portion 5. The accommodating cavity between the cover plate 232 and the collar 231 is used for accommodating the optical fiber catheter fixing part 5 and the optical fiber fixing part 41 of the optical fiber catheter, and plays roles of fixing and limiting. Preferably, the fiber-optic-tube fixing part 5 and the fiber-optic fixing part 41 are detachably connected. The first hole 2320 of the cover plate 232, the fiber guide fixing part 5, the through hole 230, the through hole 60, the fiber guide 4 and the through hole of the cranial nail are coaxially arranged, so that the fiber guide 4 in the rotary motion component 3 realizes linear motion and self-rotation motion, and no deviation in other directions is generated, thereby increasing the motion accuracy of the auxiliary motion device.

Furthermore, two connecting arms 2321 are further extended from two sides of the bottom of the cover plate 232, connecting holes 2322 are formed in the connecting arms 2321, the two connecting holes 2322 on two sides are respectively matched with the connecting ends at two ends of the guide wheel 32 in size, and the length of each connecting arm 2321 is matched with the depth of the ring neck 231. When the device is installed, the connecting arm 2321 extends into the notch 2310 of the collar 231, meanwhile, the four corners of the cover plate 232 are fixedly connected with the collar 231, and the connecting arm 2321 is movably connected with the guide wheel 32 through the connecting hole 2322. More preferably, one end of the guide wheel 32 is movably connected to one of the connection holes 2322, and the other end of the guide wheel 32 is a free end, so that the guide wheel 32 is also limited in the accommodating cavity between the cover plate 232 and the collar 231, and the guide wheel 32 can also realize movable transmission, so that the rotating transmission wire 31 in the horizontal direction is conveniently guided by the guide wheel 32 and is converted into a rotating transmission wire wound on the optical fiber catheter fixing part 5 in the vertical direction, and further the rotating motion of the optical fiber catheter fixing part 5 is realized.

The auxiliary motion device further comprises a driving assembly far away from the motion assembly, and the linear driving wire 21 and the rotary driving wire 31 of the motion assembly are in transmission connection with the driving assembly respectively. The motion assembly is driven by the driving assembly to realize linear motion and/or rotary motion. Further, the driving component drives the linear transmission wire 21 to do linear motion; the linear transmission wire 21 can drive the linear motion assembly 2 to perform linear motion, and further drive the rotary motion assembly 3 arranged on the linear motion assembly 2 to perform synchronous linear motion together, so that the optical fiber conduit fixing part 5 and the optical fiber conduit 4 arranged on the rotary motion assembly 3 perform linear motion together; the driving component is further used for driving the rotary transmission wire 31 to rotate, and then the optical fiber conduit fixing part 5 can drive the optical fiber conduit 4 to rotate. Of course, the linear driving wire 21 can perform linear motion and the rotary driving wire 31 can also perform rotary motion, so that the optical fiber guide tube 4 can perform linear motion and rotary motion simultaneously.

Further, the linear driving wire 21 and the rotary driving wire 31 are externally wrapped with PTFE (polytetrafluoroethylene) tubes, one end of the PTFT tube is fixed to the rear cover 12, and the other end is fixed to a driving fixing plate or a housing loaded on the driving assembly. Because both ends of the PTFT pipe are limited at fixed positions, the linear transmission wire 21 and the rotary transmission wire 31 are in a tight state in real time under the clamping of the PTFT pipe, the transmission precision is increased, and the bending connection can be realized to adapt to narrow environments such as a head coil or a head frame without being influenced while the long-distance transmission is realized. That is, when the motion assembly is not in line with the drive assembly, connectivity and operational stability between the two may be achieved by the clamping of the PTFT tube.

The moving component of the invention has simple structure, wherein the optical fiber conduit fixing part 5 is a rotating moving component and a fixing part for fixing the optical fiber conduit 4, and realizes a plurality of moving functions with few parts; in addition, the moving assembly is preferably made of non-metal materials, the sorting weight is light, the MR image quality is not influenced, the overall weight can be smaller than 40g, and the device is light and can be used together with a head coil. The driving part is fixed and is far away from the moving part, and is fixed on a specific bed body support platform, so that the operation is firm and convenient. Meanwhile, the method is not in the MR scanning area and does not influence the image quality.

Example 2

Referring to fig. 2A to 2C, 4A to 4D, and 5, a difference between the embodiment 2 of the present invention and the embodiment 1 is that, in order to make the movement of the rotating component 3 more stable and accurate, the embodiment 2 further optimizes the design of the fiber optic catheter fixing portion 5.

The linear driven moving part 23 is provided with a through hole 230, a ring neck 231 is arranged around the through hole 230, and the optical fiber catheter fixing part 5 is movably arranged in the ring neck 231. Preferably, the diameter of the ring neck 231 is larger than that of the through hole 230, and the diameter of the ring neck 231 is slightly larger than that of the fiber-optic catheter fixing part 5, so as to realize the rotation of the fiber-optic catheter fixing part 5 in the ring neck 231. In another preferred embodiment of the present invention, the fiber-optic-tube fixing portion 5 is a stepped cavity structure with one side open, and the cavity structure includes a first cavity 511 and a second cavity 512. The first concave cavity 511 and the second concave cavity 512 are both cylindrical concave cavity structures, the first concave cavity 511 and the second concave cavity 512 are coaxially arranged, are adjacent to each other and are communicated, and the diameter of the first concave cavity 511 is larger than that of the second concave cavity 512. Further, the diameter of the first cavity 511 is matched with the diameter of the neck 231, and more preferably, the diameter of the first cavity 511 is smaller than the diameter of the neck 231. The diameter of the second cavity 512 is matched with the diameter of the through hole 230, the second cavity 512 can pass through or partially pass through the through hole 230, the plane of the first cavity 511 abuts against the linear driven part 23 at the edge of the through hole 230, and therefore the stability of the optical fiber conduit fixing part 5 during linear and/or rotary motion is guaranteed.

Referring to fig. 6, a positioning groove 514 is formed on the bottom surface of the second cavity 512, and the positioning groove 514 is coaxial with the first cavity 511 and the second cavity 512. Preferably, the positioning groove 514 includes a circular groove 5141 and a positioning rib engagement groove 5142, and a plurality of positioning rib engagement grooves 5142 are uniformly formed on the periphery of the circular groove 5141. Preferably, the positioning rib fitting grooves 5142 are two and symmetrically arranged on the periphery of the circular groove 5141. Alternatively, the positioning rib engagement grooves 5142 may be three or more and may be disposed at equal intervals on the outer circumference of the circular groove 5141.

The optical fiber catheter 4 comprises an optical fiber fixing part 41 and an optical fiber 42, a positioning rib 410 is arranged at one end of the optical fiber fixing part 41 abutted to the optical fiber catheter fixing part 5, and the positioning rib 410 is matched with the positioning rib matching groove 5142. When in use, the optical fiber 42 of the optical fiber conduit 4 and the positioning rib 410 respectively pass through the circular groove 5141 and the positioning rib mating groove 5142 until the optical fiber fixing portion 41 abuts against the bottom surface of the second cavity 512, and then the optical fiber conduit 4 and the optical fiber conduit fixing portion 5 are relatively fixed by clamping the arc convex portion 4101 at the end of the positioning rib 410 on the edge of the positioning rib mating groove 5142. The invention realizes the relative static relation between the optical fiber conduit 4 and the optical fiber conduit fixing part 5 by the matching of the positioning rib 410 and the positioning rib matching groove 5142, thereby realizing the rotary motion of the optical fiber conduit. Of course, the optical fiber conduit 4 and the optical fiber conduit fixing portion 5 may be connected by other connection methods, such as adhesion, clamping connection, interference fit, threaded connection, and the like, for example, an internal thread is disposed inside the optical fiber conduit fixing portion 5, an external thread is disposed on the periphery of the optical fiber fixing portion 41 of the optical fiber conduit 4, and the fixed connection between the two is realized by the screw connection of the internal thread and the external thread. The above connection modes are all the prior art, and are not described herein.

Further, an annular groove 5120 is arranged on the bottom surface of the plane where the fiber optic catheter fixing portion 5 abuts against the first cavity 511 of the linear driven moving portion 23, an annular tape 53 is arranged in the annular groove 5120, and a rotational position sensor 54 is arranged on the other end surface (the end surface close to the fixing portion 6) of the linear driven moving portion 23.

The invention detects and feeds back the rotation motion condition of the rotation motion component 3 in real time through the circular ring-shaped tape 53 and the rotation position sensor 54, so that an operator can carry out the next motion operation instruction of the optical fiber conduit 4 according to the fed-back rotation motion condition.

Further, a linear position sensor 25 and a straight edge tape 26 are provided on one side of the chassis 1. The linear motion condition of the linear motion component 2 is fed back in real time by the linear position sensor 25 and the ruler tape 26, so that an operator can perform the next motion operation instruction on the optical fiber conduit 4 according to the fed-back linear motion condition.

The circular ring-shaped tape 53 and the rotational position sensor 54, the linear position sensor 25 and the straight tape 26 are all in the prior art and are not described again in detail.

Example 3

Further, as shown in fig. 6A to 6C, an optical fiber catheter fixing device 5 is disposed inside the annular neck 231, the optical fiber catheter fixing device 5 includes an optical fiber catheter fixing device 51 and an optical fiber catheter fixing device 52, the optical fiber catheter fixing device 51 is detachably connected with the optical fiber catheter fixing device 52 in a matching manner, and the optical fiber catheter fixing device 51 is fixedly disposed inside the annular neck 231 in a matching manner.

Specifically, the fiber optic catheter holder 51 is a stepped cavity structure that includes a first cavity 511 and a second cavity 512. The first cavity 511 and the second cavity 512 are both cylindrical cavity structures, and are coaxially arranged, adjacent to each other and communicated with each other, the diameter of the first cavity 511 is larger than that of the second cavity 512, and a right-angle boss 513 is formed at the adjacent position of the two cavities.

Furthermore, a positioning groove 514 is formed at one end of the optical fiber catheter holder 51 close to the second cavity 512, and is coaxially disposed with the first cavity 511 and the second cavity 512. The positioning groove 514 includes a circular groove 5141 and a positioning rib engagement groove 5142, and a plurality of positioning rib engagement grooves 5142 are uniformly formed on the periphery of the circular groove 5141. Preferably, the positioning rib fitting grooves 5142 are two and symmetrically arranged on the periphery of the circular groove 5141. Alternatively, the positioning rib engagement grooves 5142 may be three or more and may be disposed at equal intervals on the outer circumference of the circular groove 5141.

Specifically, the optical fiber conduit fixing member 52 includes an inner engaging block 521 and an outer engaging block 522, the outer engaging block 522 is a hollow tube body, a groove is formed in the tube body, an internal thread is formed on an inner wall of the groove, the inner engaging block 521 is a hollow tube column, one end of the inner engaging block 521, which is matched with the outer engaging block 522, is a bifurcated end 5211, the bifurcated end 5211 is provided with a plurality of branches, the branches are uniformly distributed, a convex portion 5212 is arranged at the end of each branch, the convex portion 5212 is an arc-shaped elastic member having a cavity at one end, the opening faces the center of the tube column, and the size of the space of the cavity is reduced along with the increase of pressing force around the convex portion 5212, so that the branches and the optical fiber conduit 4 are tightly attached. The outer wall of convex part 5212 is provided with the external screw thread, the external screw thread with internal thread screw fit connects, the bifurcation of bifurcated end 5211 can be gathered together slowly along with the screw locking of block 522 outward, and pass through the tight laminating of convex part 5212 and fiber conduit 4 and the dual function that the polymerization of bifurcated end 5211 was gathered together realizes the fastening effect to fiber conduit 4.

Further, the outer diameter of the outer engaging block 522 is the same as the inner diameter of the first cavity 511, and the outer engaging block and the first cavity are detachably engaged. One end of the body of the outer block 522 of block is provided with a round hole 5221 for place the fiber catheter, the peripheral symmetry of round hole 5221 on the outer block 522 of block is even equipped with location muscle 5222, and this location muscle 5222 can be two, also can be three or more, the terminal outer ring periphery of location muscle 5222 is provided with a lone convex part 5223, and is a plurality of the external diameter of the ring that location muscle 5222 constitutes equals the diameter of location muscle cooperation groove 5142, the diameter of lone convex part 5223 is greater than the diameter of location muscle cooperation groove 5142.

During implementation, the optical fiber conduit 4 is firstly placed into the pipe column of the clamping inner block 521, the optical fiber conduit 4 can move freely under the state that the branch end 5211 of the clamping inner block is not fastened, the clamping outer block 522 is in spiral connection with the clamping inner block 521 during fixation, the branch end 5211 of the clamping inner block 521 enables the inner wall of the convex portion 5212 to be tightly attached to the optical fiber conduit 4 through the spiral fastening force of the clamping outer block 522, and meanwhile, the branches are gathered together, so that the optical fiber conduit 4 can be firmly clamped in the optical fiber conduit fixing part 52. Then, one end of the positioning rib 5222 of the optical fiber catheter fixing member 52 passes through the positioning groove 514 of the optical fiber catheter fixing member 51, the protruding part 5223 preferentially passes through the positioning rib matching groove 5142, and since the diameter of the protruding part 5223 is larger than that of the positioning rib matching groove 5142, the protruding part 5223 can be clamped on the outer wall of the positioning rib matching groove 5142, at this time, the tube body of the clamping outer block 522 is just in clamping fit connection with the first cavity 511, so that the tail end of the protruding part 5212 of the clamping outer block 522 just contacts with the right-angled boss 513 to be clamped in the first cavity 512, and thus the optical fiber catheter fixing member 52 and the optical fiber catheter fixing member 51 are mutually clamped and fixed together, and the occurrence of slipping or shifting is avoided, thereby ensuring that the optical fiber catheter 4 can realize a fixing effect in the optical fiber catheter fixing member 51 without slipping or shifting, increasing the precision of the movement of the fiber optic catheter 4 during the operation.

Further, a fine adjustment assembly 34 is arranged at one end of the clamping inner block 521, which is far away from the clamping outer block 522, and the fine adjustment assembly 34 includes a fine adjustment clamping portion 341 and a fine adjustment fixing portion 342, and the fine adjustment clamping portion is arranged at an end portion near the clamping inner block 521. The fine tuning clamping portion 341 includes an inner clamp and an outer clamp, and is used for clamping the clamping inner block 521, so as to clamp and fix the optical fiber conduit 4 in the clamping inner block 521. The outer wall both ends of interior anchor clamps all are provided with the external screw thread, outer anchor clamps inner wall is provided with the internal thread, through threaded connection between the two, and still is provided with anti-skidding rubber ring between the two, makes thereby increase frictional force between interior anchor clamps and the outer anchor clamps and further reach fastening effect. The fine-tuning fixing part 342 comprises an inner fixing part and an outer fixing part, inner wall threads are arranged on the inner wall of the outer fixing part and are in threaded connection with external threads at the other end of the inner clamp, the inner fixing part is arranged between the outer fixing part and the inner clamp, and sawtooth protrusions are arranged on the inner wall of the inner fixing part and are used for clamping the optical fiber conduit 4 and preventing slipping when the optical fiber conduit is tighter.

Example 4

Referring to fig. 8A to 8C and fig. 9A to 9C, the auxiliary exercise device further includes a driving assembly disposed away from the exercise assembly. The drive assembly includes a first drive means 8 connected to the linear drive wire 21 and a second drive means 9 connected to the rotary drive wire 31. The first driving device 8 is used for driving the linear motion assembly 2 to do linear motion; the linear motion assembly 2 can drive the rotary motion assembly 3 to linearly move together; the second driving device 9 is configured to drive the rotational motion assembly 3 to perform rotational motion, and the rotational motion assembly 3 can drive the optical fiber conduit 4 to perform rotational motion.

In implementation, the optical fiber guide tube 4 in the rack 1 is driven by the second driving device 9 to perform rotary motion through the rotary motion assembly 3, and the linear motion assembly 2 drives the rotary motion assembly 3 arranged on the linear motion assembly 2 to perform synchronous linear motion under the driving of the first driving device 8, so that the rotary motion assembly 3 and the linear motion assembly 2 realize the synchronism of the linear motion, and further, the optical fiber guide tube 4 can perform the linear motion and the rotary motion simultaneously.

In still another preferred embodiment of the present invention, as shown in fig. 10B, the driving assembly includes a driving motor, a first driving wheel 80 and a second driving wheel 90, the first driving wheel 80 and the second driving wheel 90 are driven by the driving motor, and a switching device is provided in the driving motor, by which the rotational force of the motor can be distributed to the first driving wheel 80 or the second driving wheel 90, respectively, to thereby realize the motion output of the linear motion assembly 2 and the rotational motion assembly 3. Both the drive means and the force switching means are prior art and are not described here.

Referring to fig. 8A to 8C and fig. 9A to 9C again, the present invention provides a driving assembly capable of implementing a dual driving source, which can implement both full-automatic control and manual control. The driving assembly comprises a manual driving part and a full-automatic driving part, and the manual driving part is detachably connected with the full-automatic driving part. When full-automatic circuit control is required, one ends of the linear transmission wire 21 and the rotary transmission wire 31, which are far away from the rack 1, can be directly connected with the full-automatic driving part respectively. When manual adjustment is needed, the ends of the linear transmission wire 21 and the rotary transmission wire 31, which are far away from the rack 1, are directly connected with the manual driving part respectively. The design concept of the driving assembly will be described in a preferred embodiment of the present invention, and embodiment 4 of the present invention is merely illustrative and not restrictive, so that all the inventions falling within the design concept of the present invention are within the scope of the present invention.

As shown in fig. 8A to 8C and fig. 9A to 9C, the driving assembly of the present invention includes a first housing 100 and a second housing 200, and the first housing 100 and the second housing 200 are movably connected. A first manual adjusting part 100A and a second manual adjusting part 100B are arranged in the first shell 100; a first driving device 8 and a second driving device 9 are arranged in the second housing 200. Further, the linear driving wire 21 is sequentially detachably connected with the first manual adjusting portion 100A and the first driving device 8, and the rotary driving wire 31 is sequentially detachably connected with the second manual adjusting portion 100B and the second driving device 9. At this time, the first driving device 8 and the second driving device 9 are driven to drive the first manual adjustment part 100A and the second manual adjustment part 100B to move together, so as to realize full-automatic control of the linear and/or rotational movement of the movement assembly.

Further, the first rotation shaft 101 of the first manual adjustment unit 100A and the drive shaft of the first driving device 8 are disconnectably connected by a connecting bushing, and the second rotation shaft 103 of the second manual adjustment unit 100B and the drive shaft of the second driving device 9 are disconnectably connected by a connecting bushing, so that the manual control of the motion assembly is realized only by manually adjusting the first manual adjustment unit 100A and the second manual adjustment unit 100B.

The first shell 100 is provided with an accommodating cavity a and an accommodating cavity b, the accommodating cavity a and the accommodating cavity b are vertically arranged side by side, a partition plate is arranged between the accommodating cavity a and the accommodating cavity b, and two connecting shaft sleeve penetrating holes are formed in the partition plate and used for accommodating penetrating connecting shaft sleeves; the first manual adjustment part 100A and the second manual adjustment part 100B are provided in the accommodation cavity a. The first manual adjustment portion 100A includes a first rotation shaft 101 and a first rotation wheel 102, and the first rotation shaft 101 and the first rotation wheel 102 are fixedly connected; the first rotating wheel 102 is provided with a groove for winding a silk thread, the second manual adjusting part 100B comprises a second rotating shaft 103 and a second rotating shaft 104, and the second rotating shaft 103 is fixedly connected with the second rotating shaft 104; the second rotating wheel 104 is provided with a groove for winding the silk thread. The accommodating chamber b is movably connected with a second housing 200. The first driving device 8 and the second driving device 9 are disposed in the second housing 200. The first and second driving means 8, 9 may preferably be ultrasonic motors. The driving shaft of the first driving device 8 is detachably connected with the first rotating shaft 101, and the second driving device 9 is detachably connected with the second rotating shaft 103.

The first casing 100 is provided with sliding grooves 10a on both side walls perpendicular to the partition, and the second casing 200 is provided with sliding portions 20a adapted to the sliding grooves 10a on both side walls perpendicular to the partition. Preferably, the sliding portion 20a protrudes from the second housing 200, and when the sliding groove 10a is slidably connected to the sliding portion 20a, an outer surface of the sliding portion 20a is flush with an outer surface of the first housing 100. The sliding portion 20a can correspondingly slide in the sliding groove 10 a. Furthermore, in order to better fix the relative position of the first casing 100 and the second casing 200, a fixing member 20b is further screwed on the sliding portion 20a, the size of the end surface of the fixing member 20b is larger than the size of the groove of the sliding groove 10a, when the second casing 200 relatively slides to the required position of the first casing 100, the fixing member 20b is screwed down to make the end surface of the fixing member 20b abut against the first casing 100, so as to realize the fixed connection between the first casing 100 and the second casing 200. Further, the driving assembly further includes a third housing 300, and the third housing 300 is covered on the upper portions of the first housing 100 and the second housing 200 to achieve sealing and supporting. Furthermore, the third housing 300 further has a first opening 300A and a second opening 300B. A portion of the first shaft 101 is exposed to the first opening 300A, and a portion of the second shaft 103 is exposed to the second opening 300B. And marking rulers 300C are arranged near the first opening 300A and the second opening 300B, so that the movement precision of manual adjustment is more controllable. The shell of the driving assembly of the present invention can have various structures, which are not described herein. Furthermore, in order to facilitate the convenience of manual adjustment, the first rotating shaft 101 and the second rotating shaft 103 are respectively screwed with a holding portion 1011.

Referring to fig. 7 again, in order to prevent the transmission wire from slipping during operation, a groove 1021 for winding the wire is disposed on the first rotating wheel 102, and two guide protrusions 1021a disposed at intervals are further disposed on the groove 1021. Preferably, the linear transmission wire 21 is wound around the guide protrusion 1021a in a zigzag shape; similarly, the groove 1021 and the guide protrusion 1021a are also arranged on the second rotating wheel 104, and the rotating transmission wire 31 bypasses the guide protrusion 1021a in a zigzag manner. The guide projection 1021a has the functions of preventing slipping and fixing and limiting.

Furthermore, as shown in fig. 8C, in order to prevent the first rotating shaft 101 and the second rotating shaft 103 from generating a reverse phenomenon during manual adjustment, a damping structure, such as a rotational damper 101a, may be further added to the first rotating shaft 101 and the second rotating shaft 103, and the rotational damper 101a is disposed on the first rotating shaft 101 and the second rotating shaft 103, and is also matched with a position sensor to increase the motion accuracy of manual adjustment. Of course, the driving component of the present invention is further provided with an electrical connector and a processor, both of which are in the prior art and are not described again.

Example 5

Referring to fig. 10A and 10B, and fig. 11A and 11B, a driving system of a thread auxiliary exercise device includes a remote control system 10 and a robot which are matched with the auxiliary exercise device according to embodiments 1 to 4; the robot includes: the device comprises a communication module, a processing module and an auxiliary motion device, wherein the auxiliary motion device is the wire auxiliary motion device described in embodiment 1-embodiment 4.

The remote control system 10 includes: a control module for displaying an intraoperative magnetic resonance image, wherein the image comprises ablation conditions and positional information of the fiber optic catheter 4, wherein the positional information comprises at least one of: the insertion depth of the optical fiber catheter 4, the insertion direction of the optical fiber catheter 4, and the rotation angle of the optical fiber catheter 4; the control module is further configured to generate a control command and send the control command to the robot, where the control command is generated after determining that the optical fiber catheter 4 needs to be adjusted according to the ablation condition and the position information. The communication module of the robot is configured to communicate with the control module and receive the control command from the control module, where the control command carries a parameter for adjusting the optical fiber catheter 4, the parameter at least includes information of a position to be adjusted of the optical fiber catheter 4, and the information of the position to be adjusted includes at least one of: insertion depth, insertion direction, rotation angle; the processing module is used for converting the parameters carried in the control command into motion information of the robot arm and sending the motion information to the auxiliary motion device; the auxiliary motion device is used for moving according to the motion information, wherein the motion drives the optical fiber conduit 4 to move according to the parameters, and the motion information comprises at least one of the following: speed of movement, direction of movement, angle of rotation.

As shown in fig. 10A and 10B, the control module may be located in a host, which may be a host in a laser ablation device, which is typically placed outside the magnetic resonance room when performing an ablation procedure. The functions of the control module and the robot are explained below.

The control module is used for displaying an intraoperative magnetic resonance image, wherein the image comprises ablation conditions and position information of the fiber optic catheter 4, wherein the position information can comprise at least one of the following: the insertion depth of the optical fiber tube 4, the insertion direction of the optical fiber tube 4, the rotation angle of the optical fiber tube 4, and the like. During the ablation process, the position of the optical fiber catheter 4 can be determined to be adjusted according to the ablation condition and the position information of the optical fiber catheter 4. Based on this, the control module is further configured to generate a control command and send the control command to the robot, wherein the control command is generated after determining that the fiber optic catheter 4 needs to be adjusted according to the ablation condition and the position information.

In an alternative embodiment, the control module may implement a remote control function for the robot, and therefore, the remote control system may be understood as a part of the control module, and the remote control system may further include a hardware control system, for example, the robot may be controlled by a remote controller or the like.

In the mechanism shown in fig. 10A and 10B, the auxiliary movement device may comprise a drive assembly and a movement assembly, which is responsible for bringing the fiber-optic catheter 4 into linear and/or rotational movement. The motion assembly may also be provided with an absolute position sensor for determining the specific position of the fiber optic catheter in a closed loop. The moving mechanism is required to be small and light, can be used in skull nails and head coils, and does not influence the quality of MR scanning images.

The driving assembly is used for providing power for the moving assembly, and the part can be integrated with the moving assembly or separated from the moving assembly. Further, preferably, the drive assembly is separated from the magnetic resonance main body or the MR scanning chamber, and then the torque transmission between the drive assembly and the MR scanning chamber is completed through the power transmission structure. In the invention, the drive source control of the drive assembly can be manual control or full-automatic control, and the motion accuracy of the motion assembly is further ensured due to the existence of the position sensor and the marking ruler. Furthermore, the position sensor can be directly connected with the driving component through an electric connecting wire, and can also be directly connected with the control system.

In fig. 10B, the distance of the displacement of the moving component can be determined from the information obtained from the MRI structural image, so as to further double calibrate the actual situation of the movement, thereby avoiding the occurrence of accidents under special circumstances.

By this embodiment an auxiliary robot is introduced for operating the adjustment of the fibre-optic catheter 4 during the ablation process, which auxiliary robot is arranged beside the patient and can control the operation of the auxiliary movement means on the basis of pre-determined positioning information. The introduction of the auxiliary robot can realize both full-automatic control and manual regulation of the optical fiber guide tube 4, so that the efficiency and accuracy of the adjustment of the optical fiber guide tube 4 are improved, and the operation can obtain better effect.

The control module may be further configured to perform preoperative ablation planning, and generate an ablation strategy after the preoperative ablation planning, where the ablation strategy includes at least one ablation stage, each stage is configured with an expected ablation result corresponding to the stage, light-emitting information of the fiber optic catheter 4, and location information of the fiber optic catheter 4, and an ablation stage in the ablation strategy is executed according to a configuration sequence in the ablation strategy. During the ablation process, there may be multiple ablation stages according to a pre-generated ablation strategy, for example, for an irregularly-shaped tumor, it is necessary to set multiple ablation stages according to the shape of the tumor, each ablation stage is used for ablating a part of the tumor, and after one stage is completed, performing the ablation of the next stage requires adjusting the position of the fiber optic catheter 4, at this time, in this embodiment, the fiber optic catheter 4 may be adjusted by controlling the robot through the control module. In this optional embodiment, the control module is configured to obtain an expected ablation result corresponding to a current ablation stage, determine whether the current ablation result matches the expected ablation result according to the MRI image information, enter a next ablation stage in a pre-generated ablation strategy, obtain adjustment information indicating whether the fiber optic catheter 4 needs to be adjusted in the next ablation stage, and generate a control command according to the adjustment information.

For example, three-dimensional virtual modeling can be performed on the estimated ablation region, an approximate ablation region is fitted, or registration of a preoperative structural phase (or other multi-modal images) and a postoperative same sequence image is realized, a contrast difference method is used to highlight and mark a changed region, or a three-dimensional fast delineation method is used to reconstruct a postoperative ablation region, and the postoperative ablation region is compared with the estimated ablation region before operation, and if the percentage of ablation is calculated to exceed 110%, the ablation is considered to be excessive; if less than 90% ablation is considered insufficient, the range where the intended ablation region is overlapped and the range outside the intended ablation region need to be considered. If the percentage is between 90% and 110%, the ablation result is considered to be the same as the expected ablation result.

In another alternative embodiment, the ablation may also be monitored in real time during the ablation at a certain stage. There are many ways to monitor the ablation process in real time, and an alternative embodiment is provided in this embodiment. In the optional implementation mode, the monitoring module performs three-dimensional delineation on the ablation region and the peripheral region, adds corresponding material attributes, stores a tissue material attribute list, and needs to perform fine segmentation if two or more tissues exist in the ablation region, so that ablation parameters change at a tissue junction; if the ablation area has a tumor, the area outside the tumor is defaulted to be the same tissue or respectively sketched, pre-operation ablation prediction control module is used for prediction to obtain corresponding ablation parameters, and the ablation parameters comprise cooling rate, laser power and light-emitting time.

The ablation probe is inserted into a corresponding position, the FOV (field of view) of magnetic resonance scanning is set, the monitoring module automatically identifies and judges the size of each pixel point, and each pixel point is used as an ablation unit for calculation.

Under the condition of magnetic resonance non-invasive temperature measurement, the ablation prediction is carried out by combining the segmentation and assignment of the predicted ablation region before operation, namely ablation parameters and material attributes, and using an Arrhenius equation and/or a CEM43 model.

In different ablation stages, different cells are marked with different colors, when an arrhenius equation is used, different ablation threshold values are selected to be started for display, and if the chemical reaction rate coefficient omega is 1, the large value of cell injury is 63.2%, and the large value is displayed in a faint yellow range; the cell damage was approximately 99% when the chemical reaction rate factor Ω was 4.6, which was shown to be orange in this range to show that cell ablation was more complete in this range. In other regions of interest, if not ablated to a specified percentage, but more than 43 degrees celsius, these regions are displayed in green, and also in different colors at different equivalent ablation durations, using the CEM43 model, for example: the segmented display is respectively carried out under different conditions of 2 minutes equivalent, 10 minutes equivalent and 60 minutes equivalent, the segmented ablation display enables doctors to judge the ablation effect better, when the ablation area is displayed, the ablation area is semitransparent, and after the tissue structure phase is displayed in an overlapping mode, the ablation range and the regions can be seen at the same time.

When the condition that the position of the optical fiber catheter 4 needs to be adjusted is monitored in real time, a pause command can be sent through the control module, wherein the pause command is used for indicating the optical fiber catheter 4 to pause ablation; after receiving the pause command, the control module receives adjustment information input by a user to generate a control command, wherein the adjustment information is used for adjusting the current position of the optical fiber catheter 4.

For example, a direction control device may be further disposed on the main machine, the device may be a handle (or may be multiple handles, where the multiple handles include a handle for controlling ascending and descending, a handle for controlling rotation, a handle for controlling movement in a plane, and the like), a user may control the movement of the auxiliary movement device by operating the handle, and at this time, the control module may obtain a displacement of the handle, convert the displacement into a control command for controlling the movement of the auxiliary movement device, and send the control command to the robot.

In an alternative embodiment, the pause command is issued by a user of the control module (e.g., the user determines via image information displayed by the host that an adjustment of the orientation of the fiber optic catheter 4 is required); and/or, the pause command may also be issued by the control module according to a preconfigured alarm condition, wherein the alarm condition is used to indicate a risk situation occurring during the operation, for example, if the actual ablation area is larger than the expected ablation area, whether to stop ablation is prompted, e.g., if the ablation coverage area exceeds 110%, the monitoring module will cut off the energy output; for another example, the method may further include: exceeding a maximum depth of the fiber optic catheter 4, exceeding a planned ablation boundary, exceeding a safe temperature threshold, etc.

If a patient has a plurality of different lesion parts, there may be a case of performing ablation using a plurality of fiber optic catheters 4, as an optional embodiment, the control module may further display the ablation conditions of the plurality of fiber optic catheters 4 in the system, identify a fiber optic catheter 4 to be adjusted in the plurality of fiber optic catheters 4, and generate a control command for the fiber optic catheter 4 to be adjusted, where the control command carries identification information of the fiber optic catheter 4 to be adjusted, and the identification information is used to instruct the auxiliary motion device to adjust the position of the fiber optic catheter 4 corresponding to the identification information.

The different stages in the ablation strategy and whether or not multiple fiber optic catheters 4 are used can be accomplished by preoperative planning, where there is also an important part in planning the path of the fiber optic catheter 4. After planning the path, the insertion of the optical fiber catheter 4 may be performed by a physician according to a pre-planned path, or may be performed by a control module controlling a robot. For example, the control module is also used for preoperatively planning a path of the fiber optic catheter 4 through the human tissue to reach the lesion site, wherein the path is a path in the human tissue; the robot is also used to control the fiber optic catheter 4 to follow a path to the lesion site.

The motion information of the robot can be calculated through the control module according to the path, or the motion information of the robot can be calculated through the robot, namely the control module is used for calculating the motion information of an auxiliary motion device of the robot according to the path and sending the motion information to the robot; or the control module is used for sending the path to the robot; the robot is used for calculating motion information according to the path; the robot is used for controlling the auxiliary motion device to drive the optical fiber catheter 4 to reach the focus part along the path according to the motion information obtained by path calculation. As an optional implementation manner, the control module is further configured to monitor whether the robot drives the optical fiber catheter 4 to move according to the path information and send an adjustment command when the robot deviates from the path, where the adjustment command is used to adjust the movement information of the auxiliary movement device of the robot; the robot is also used to adjust the movement according to the adjustment commands.

There are various ways to obtain whether the motion of the fiber optic catheter 4 conforms to the path, for example, the control module may monitor whether the motion of the fiber optic catheter 4 conforms to the path through the information of the magnetic resonance image and/or the data fed back by the sensor disposed on the motion assisting device, wherein the sensor disposed on the motion assisting device may include at least one of the following: motion sensor, displacement sensor.

As an optional way, in the adjustment of the optical fiber conduit 4 in the above embodiments, the processing module of the robot is further configured to acquire the motion state of the auxiliary motion device during the motion controlled by the motion information, and send the motion state to the control module through the communication module. The control module can also judge whether the movement of the optical fiber conduit 4 is in accordance with the movement of the optical fiber conduit 4 driven by the auxiliary movement device and the received movement state. This way better security assurance can be provided.

The robot in the above embodiments may be sold or used alone, and if the robot is matched with a control module of another third party manufacturer, the robot provides an interface, which is used to specify the control mode and parameters of the robot, and the communication mode between the third party control module and the robot. Also the feedback parameters of the robot are defined by the interface. Therefore, the adaptation of the robot can be increased, and the robot can be added as an auxiliary control function under the condition that a user purchases a third-party control module.

In the above system or the above robot sold separately, a remote interaction module may be further added, which is used for controlling the robot in the magnetic resonance room, for example, the control includes at least one of the following: the robot is calibrated, the robot is controlled to move, the robot is controlled to puncture, the robot is controlled to stop emergently, and an auxiliary movement device of the robot is controlled.

Example 6

A control method of a drive system of an auxiliary exercise device of embodiment 4. The driving system is divided into manual driving and full-automatic driving.

Manual driving:

as shown in fig. 6A and 6B, the present invention provides a driving assembly capable of implementing a dual driving source, which can implement both full-automatic control and manual control. The drive assembly comprises a manual drive part and a full-automatic drive part, and the manual drive part is detachably connected with the full-automatic drive part.

When manual adjustment is needed, the connecting ends of the linear transmission wire 21 and the rotary transmission wire 31 are directly connected with the manual driving part respectively. And the manual driving part is separated from the full-automatic driving part, and the manual driving part and the full-automatic driving part are not mutually related. Furthermore, the electrical connection line of the position sensor on the motion assembly is still connected to the processor of the driving assembly, so as to realize accurate feedback under manual adjustment. At this time, the manual control of the motion assembly can be realized by manually adjusting the first manual adjusting part 100A and the second manual adjusting part 100B, and the marking ruler of the manual driving part can accurately and intuitively display the motion condition.

Full-automatic driving:

when full-automatic circuit control is required, the connecting ends of the linear transmission wire 21 and the rotary transmission wire 31 can be directly connected with the full-automatic driving part respectively. The linear transmission wire 21 may be connected to the first manual adjustment unit 100A and the first driving device 8 in this order; the rotary transmission wire 31 is connected to the second manual adjustment portion 100B and the second driving device 9 in this order. The first driving device 8, the second driving device 9 and the processor are electrically connected, and the processor is connected with the remote control system to realize full-automatic control of linear and/or rotary motion of the motion assembly.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.

Claims

1. A wire-assisted exercise device, comprising:

the device comprises a rack (1), wherein a linear motion assembly (2) is arranged on the rack (1), and the linear motion assembly (2) is connected with the rack (1) in a sliding manner; the linear motion assembly (2) comprises a collar (231);

the rotary motion assembly (3), the rotary motion assembly (3) is movably arranged in the ring neck (231);

the driving assembly comprises a linear transmission wire (21) and a rotary transmission wire (31) which are wound on the driving assembly, the linear transmission wire (21) is wound on the linear motion assembly (2), and the rotary transmission wire (31) is wound on the rotary motion assembly (3); the linear transmission wire (21) is used for driving the linear motion assembly (2) to do linear motion; the linear motion assembly (2) can drive the rotary motion assembly (3) to do linear motion; the rotary transmission wire (31) is used for driving the rotary motion component (3) to do rotary motion, and the rotary motion component (3) can drive the optical fiber guide pipe (4) to do rotary motion.

2. The auxiliary motion device for silk threads as claimed in claim 1, wherein the linear motion assembly (2) is provided with a third fixed through hole (221) and a third movable through hole (222) which are arranged in parallel; one side of the linear transmission wire (21) penetrates through and is fixed on the third fixed through hole (221), the other side of the linear transmission wire (21) penetrates through the third movable through hole (222), and the linear transmission wire (21) can freely move in the third movable through hole (222).

3. A yarn assisted movement device according to claim 2, characterized in that the rotary movement member (3) comprises a fiber optic catheter fixing part (5), the fiber optic catheter fixing part (5) is movably arranged in the annular neck (231), and a guide wheel (32) is movably arranged at the gap (2310) of the annular neck (231);

one end of the rotary transmission wire (31) is wound and fixed on the optical fiber conduit fixing part (5), and the other end of the rotary transmission wire passes through the guide wheel (32) and then is wound on the driving component.

4. A yarn-assisted exercise device according to claim 3, wherein the optical fiber conduit-fixing portion (5) has a circumferential groove (33), the circumferential groove (33) has at least one positioning post (332), and the rotary driving yarn (31) is fixed to the positioning post (332).

5. A thread assisted movement device according to claim 1, characterized in that the drive assembly comprises a first manual adjustment (100A) and a second manual adjustment (100B); the first manual adjusting part (100A) comprises a first rotating shaft (101) and a first rotating wheel (102) which are fixedly connected, and the linear transmission wire (21) is wound on the first rotating wheel (102); the second manual adjusting part (100B) comprises a second rotating shaft (103) and a second rotating wheel (104) which are fixedly connected, and the rotating transmission wire (31) is wound on the second rotating wheel (104);

through the drive first pivot (101) can drive linear motion subassembly (2) carry out linear motion, through the drive second pivot (103) can drive rotary motion subassembly (3) carry out rotary motion, rotary motion subassembly (3) can drive fiber conduit (4) and carry out rotary motion.

6. A thread assisted movement device according to claim 5, characterized in that the drive assembly further comprises a first drive means (8) and a second drive means (9); the first driving device (8) is detachably connected with the first rotating shaft (101); the second driving device (9) is detachably connected with the second rotating shaft (103).

7. A yarn auxiliary movement device according to claim 6, characterized in that the frame (1) comprises a guide (7), a front cover (13) and a rear cover (12); the guide part (7) comprises a guide rail (71) arranged between the front cover (13) and the rear cover (12), a guide rail guide groove (24) is formed in the linear motion assembly (2), and the guide rail (71) is in sliding connection with the guide rail guide groove (24).

8. A wire assist movement device according to any one of claims 1 to 6, wherein a position sensor is provided on the movement assembly.

9. A wire assisted movement device according to any of claims 1 to 6, characterized in that the front cover (13) of the frame (1) is provided with a fixing part (6), the fixing part (6) being provided with a through hole (60) running axially therethrough, the through hole (60) being fixedly connected to a skull nail.

10. A drive system for a thread-assisted movement device according to any one of claims 1 to 7, comprising a remote control system (10) and a robot, characterized in that the robot comprises a communication module, a processing module and the thread-assisted movement device, the remote control system (10) being electrically connected to the robot for controlling the movement of the fiber optic guide tube (4) in the thread-assisted movement device.

11. A control method of a drive system of a silk thread auxiliary motion device according to claim 10, characterized in that the drive assembly is directly manually or remotely driven to operate in a full-automatic manner so as to drive the linear motion assembly (2) and the rotary motion assembly (3) to perform linear motion and/or rotary motion.