A driving device

Abstract

The present invention provides a driving device, belonging to the technical field of medical devices, which includes a driving mechanism provided on a housing; a locking mechanism provided on the housing; and a linkage component. In the driving device provided by the present invention, the housing is provided with a driving mechanism, a locking mechanism and a linkage component. The linkage component has a first locking state and a second locking state, and the linkage component can be switched between the first locking state and the second locking state. The first locking state enables the driven member to slide relative to the linkage component to complete the sliding adjustment of the driven member; the second locking state enables the driving mechanism, the linkage component, and the driven member to rotate synchronously with the driving mechanism to complete the angular adjustment of the driven member. During the switching of the linkage component between the first locking state and the second locking state, only by operating the driving mechanism can the position or angle adjustment of the driven member be completed. This driving device has a simple structure and is easy to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a driving device. Background Art

[0002] Heart valve disease is a common heart disease in China. Artificial heart valve replacement is the main means and the most effective way to treat heart valve diseases. When performing artificial heart valve replacement, it needs to be carried out through an interventional operation. At the distal end of the outer tube during the interventional operation, it is required to reach the center of the valve, and then release the carried heart valve replacement device so that the heart valve replacement device can replace the own valve to perform its function.

[0003] In the prior art, a delivery system is usually used to deliver the valve sleeved on the inner tube to the position of the valve to be treated, and fine-tune the valve, that is, drive the inner tube to rotate or drive the inner tube to move axially. Currently, two sets of driving mechanisms are usually arranged in the housing of the delivery system. One set of driving mechanism serves as a transfer mechanism for driving the inner tube to move axially along it; the other set of driving mechanism serves as a rotating mechanism for driving the inner tube to rotate axially along it, and the rotating mechanism is fixedly arranged on the transfer mechanism, so that the transfer mechanism drives the rotating mechanism and the inner tube to move synchronously, and the rotating mechanism drives the inner tube to rotate. In view of the limited space inside the housing of the delivery system, setting two sets of driving mechanisms makes the structure of the delivery system complex and occupies a large space.

[0004] In the prior art, not only in the valve delivery system, but also in other structures, in the driving device for driving the driven member to rotate and slide, two sets of driving mechanisms are set to drive the driven member to rotate and slide respectively, resulting in the complex structure of the driving device and large occupied space. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the complex structure and large occupied space when two sets of driving mechanisms are required to be set in the prior art driving device to drive the driven member to rotate and slide, so as to provide a driving device.

[0006] To solve the above technical problem, the present invention provides a driving device, including

[0007] A driving mechanism, arranged on the housing;

[0008] A locking mechanism, arranged on the housing;

[0009] A linkage component, movably arranged on the housing and capable of switching between a first locked state and a second locked state; it is adapted to be slidably and anti-rotationally connected to the driven member;

[0010] In the first locking state, the linkage component is locked on the housing by the first blocking force applied by the locking mechanism, and the driving mechanism drives the driven member to slide relative to the linkage component; in the second locking state, the first blocking force is cancelled, the linkage component is driven by the prying force to move and lock on the driving mechanism, and is driven by the driving mechanism to drive the driven member to rotate synchronously; in the first locking state, the prying force is cancelled.

[0011] As a preferred technical solution, the locking mechanism includes a locking member provided on the housing, and the locking member applies the first blocking force to the linkage member through telescopic movement;

[0012] In a first locking state, the locking member is locked with the linkage member; in a second locking state, the locking member is separated from the linkage member;

[0013] The locking member is subject to a return biasing force tending to remain in the first locking state.

[0014] As a preferred technical solution, among the surfaces of the locking member and the linkage member facing each other, at least one first protrusion is provided on one surface, and a first groove corresponding to the first protrusion is provided on the other surface;

[0015] In the first locking state, the first protrusion is plugged into and matched with the first card slot; in the second locking state, the first protrusion is separated from the first card slot.

[0016] As a preferred technical solution, in the first locking state, the locking member is sleeved outside the distal end of the linkage member, one of the first protrusion and the first slot is provided on the inner wall surface of the locking member, and the other is provided on the outer wall surface of one end of the linkage member;

[0017] The operating end of the locking piece extends out of the first clearance hole provided on the shell, and the locking piece performs telescopic movement along the radial direction of the inner tube.

[0018] As a preferred technical solution, the driving mechanism includes an operating component movably arranged on the housing between a first state and a second state, and a transition component fixedly connected to the driven component;

[0019] In the first state, the operating component moves synchronously with the transition component to drive the driven component to slide, and the linkage component is in a first locking state; in the second state, the linkage component is driven by the pulling force to move to lock on the transition component, and then driven by the operating component to drive the driven component to rotate and is in a second locking state.

[0020] As a preferred technical solution, the operating component is slidably and rotatably arranged on the housing, and the operating component is slidably and anti-rotatably connected to the transition piece;

[0021] The driving mechanism further comprises a motion conversion member which is arranged in linkage with the transition member, and the motion conversion member is fixedly connected to the driven member and is used for converting the rotational motion of the transition member into linear sliding;

[0022] In the first state, the operating component drives the transition piece to rotate, and the linkage component drives the motion conversion component to slide on the transition piece, the distal end of the linkage component is locked on the locking piece, and the proximal end thereof faces the transition piece;

[0023] In the second state, the operating component slides relative to the transition piece to apply a pushing force to the mating body, and the linkage component is driven by the pushing force to slide toward the transition piece and lock on the transition piece, and then driven by the synchronous rotation of the operating component and the transition piece to drive the driven part to rotate.

[0024] As a preferred technical solution, the linkage component is provided with a matching body; the operating component is provided with a toggle body;

[0025] The toggle body is rotatably and anti-slip connected to the matching body, and in the second state, the operating component slides through the toggle body to apply a toggle force to the matching body;

[0026] The matching body is anti-slip and rotatably arranged on the linkage component;

[0027] The engaging body is driven by the pulling force to synchronously slide the linkage component relative to the housing; the linkage component is driven by the synchronous rotation of the operating component and the transition piece to rotate relative to the engaging body.

[0028] As a preferred technical solution, the matching body includes an annular pull ring and a matching protrusion radially protruding outside the pull ring;

[0029] The distal end of the operating component is sleeved outside the proximal end of the housing, and the shifting body is a first annular sliding groove provided on the inner wall surface of the operating component;

[0030] The linkage component is located in the shell, and the pull ring is rotatably sleeved in the second annular groove on the outer periphery of the linkage component; the matching protrusion passes through the second clearance hole provided on the shell and is rotatably inserted in the first annular groove, and slides in the second clearance hole under the pulling force.

[0031] As a preferred technical solution, the proximal end of the transition piece is rotatably and non-sliply arranged in the housing, and the distal end of the transition piece is arranged in the inner cavity of the operating component.

[0032] As a preferred technical solution, it further includes at least one first elastic member disposed between the transition member and the operating member;

[0033] In the second state, the first elastic member releases energy to apply a biasing force to the operating member to drive the linkage member to slide in the direction of the transition member;

[0034] And / or it further includes an anti-rotation mechanism disposed in the housing for anti-rotationally disposing the linkage member on the housing in the first locked state.

[0035] As a preferred technical solution, the anti-rotation mechanism includes

[0036] A rotation stop seat disposed in the housing; and a second protrusion disposed on one end face of the mutually facing end faces of the linkage member and the rotation stop seat, and a second card slot disposed on the other end face and capable of being inserted and matched with the second protrusion one by one;

[0037] In the first locked state, the second protrusion is inserted into the second card slot; in the second locked state, the second protrusion is separated from the second card slot.

[0038] As a preferred technical solution, among the mutually facing end faces of the linkage member and the transition member, a third protrusion is disposed on one end face, and a third card slot capable of being inserted and matched with the third protrusion one by one is disposed on the other end face;

[0039] In the second locked state, the third protrusion is inserted into the third card slot, and in the first locked state, the third protrusion is separated from the third card slot.

[0040] As a preferred technical solution, a plurality of linear elastic members arranged on the same circumference are disposed on the end face where the second protrusion or the third protrusion is not provided;

[0041] Corresponding to their respective locked states, at least one linear elastic member is retracted and deformed under the extrusion force of the corresponding protrusion, and a card slot is formed between the retracted linear elastic member and its adjacent non-retracted linear elastic member for the protrusion to be inserted and matched.

[0042] The technical solution of the present invention has the following advantages:

[0043] 1. The driving device provided by the present invention has a driving mechanism, a locking mechanism and a linkage component on the housing. The linkage component has a first locking state and a second locking state, and the linkage component can be switched between the first locking state and the second locking state. The locking mechanism exerts a first blocking force on the linkage component to lock the linkage component on the housing. At this time, the linkage component is in the first locking state. When the driving mechanism drives the driven component, the driven component slides relative to the linkage component to complete the sliding adjustment of the driven component. When the linkage component is switched to the second locking state, the locking mechanism no longer exerts the first blocking force on the linkage component, so that the linkage component can move in the housing until it is locked on the driving mechanism. At this time, when the driving mechanism is driven, the linkage component, the driven component and the driving mechanism rotate synchronously to complete the angle adjustment of the driven component. During the switching between the first locking state and the second locking state of the linkage component, only one set of driving mechanism needs to be set, and only by operating this driving mechanism can the position or angle adjustment of the driven component be completed. This driving device has a simple structure and is easy to operate.

[0044] 2. The driving device provided by the present invention, the locking mechanism includes a locking member provided on the housing. The locking member can exert a first blocking force on the linkage component through telescopic movement. The locking member is kept in the locking state of the linkage component under the action of a reset biasing force. Driving the locking member to perform telescopic movement can release the locking of the linkage component, so that the linkage component can move from the first locking state to the second locking state, which is convenient for the linkage component to switch states.

[0045] 3. The driving device provided by the present invention, the locking member and the linkage component control the state of the linkage component through a first protrusion and a first slot. When the first protrusion is inserted into the first slot, the linkage component is in the first locking state. When the first protrusion disengages from the first slot, the linkage component can move from the first locking state to the second locking state; the first protrusion can be provided on the locking member, and the first slot can be provided on the surface of the linkage component. The positions of the first protrusion and the first slot correspond to each other so that the first protrusion can be inserted into the first slot; the locking member has an operating end, and the operating end extends out of the first relief hole of the housing to facilitate the operator to operate the state switching of the linkage component outside the housing.

[0046] 4. The driving device provided by the present invention, the driving mechanism includes an operating component and a transition component. The operating component has a first state and a second state. When the operating component is in the first state, the linkage component is in the first locking state. The operating component and the transition component move synchronously to drive the driven component to slide and complete the position adjustment of the driven component; when the operating component is in the second state, a pushing force is applied to the linkage component to make the linkage component move from the first locking state to the second locking state. Furthermore, when the operating component is operated, the transition component and the linkage component rotate synchronously. At this time, the driven component rotates synchronously with the transition component to complete the angle adjustment of the driven component, which is convenient for the operator to control the operating component and then control the position and angle adjustment of the driving device.

[0047] 5. The driving device provided by the present invention has an operating part and a transition part that are slidably and rotatably connected, and the driving mechanism includes a motion conversion part, which is connected to the transition part by a thread, and the driven part is connected to the motion conversion part. When the operating part is in the first state, the linkage part is in the first locking state. At this time, the operating part is rotated, the transition part and the operating part rotate synchronously, and the linkage part neither rotates nor moves. The transition part causes the motion conversion part to slide while rotating, thereby driving the driven part to slide and changing the position of the driven part; when the operating part is in the second state, the shifting body of the operating part applies a shifting force to the matching body of the linkage part, so that the linkage part moves from the first locking state to the second locking state. At this time, the operating part is rotated, the transition part and the linkage part both rotate synchronously with the operating part, and the linkage part drives the driven part to rotate synchronously, and the driven part and the motion conversion part do not slide relative to each other, thereby completing the adjustment of the angle of the driven part, further making it easy for the operator to control the driving device.

[0048] 6. In the driving device provided by the present invention, the operating part is sleeved on the outside of the linkage part, the toggle body is arranged on the inner wall of the operating part, and the matching body is protruded on the linkage part to facilitate the matching with the toggle body; the transition part is provided with an internal thread, and the motion conversion part is mounted on the internal thread of the transition part, so that when the transition part rotates, the motion conversion part can be driven to slide under the action of the thread, and the thread matching can also make the driving device have higher sliding accuracy.

[0049] 7. The driving device provided by the present invention has a matching body rotatably provided on the linkage component, and the matching body is engaged in the first annular groove on the linkage component, so that the linkage component can rotate in the matching body and slide synchronously with the matching body, and the matching protrusion of the matching body is engaged in the second annular groove of the operating component, so that the matching body can rotate in the first annular groove and slide synchronously with the operating component, so that in the first locking state, when the operating component is rotated, the linkage component is not affected; in the second locking state, when the operating component is slid, the linkage component slides synchronously with the operating component and is locked on the transition component under the action of the matching body. Finally, driven by the synchronous rotation of the operating component and the transition component, the linkage component rotates relative to the matching body while driving the driven component to rotate.

[0050] 8. The driving device provided by the present invention has a first locking state achieved by plugging a linkage component into a locking component, so that when the operating component rotates, the linkage component is fixed; the second locking state is achieved by plugging a linkage component into a transition component, so that when the operating component and the transition component rotate synchronously, the linkage component is driven to rotate synchronously. When the linkage component is plugged into the locking component and the transition component respectively, they are in different locking states, and different operations on the driven component can be completed, that is, the axial displacement or circumferential angle of the driven component can be adjusted.

[0051] 9. The driving device provided by the present invention has a rotation-stopping seat on the shell, and a second protrusion and a second groove are provided on the end faces opposite to the rotation-stopping seat and the linkage component, and a third protrusion and a third groove are provided on the end faces opposite to the linkage component and the transition component. The second protrusion cooperates with the second groove so that the linkage component is anti-rotatably arranged on the shell when in the first locking state, and will not be driven by the rotation of the linkage component. The cooperation of the third protrusion and the third groove enables the linkage component and the transition component to be anti-rotatably locked in the second locking state, so as to facilitate synchronous rotation under the drive of the rotation of the operating component.

[0052] 10. The driving device provided by the present invention is provided with linear elastic parts arranged on the same circumference on the end faces of the anti-rotation seat, the linkage part and the transition part where the second protrusion and the third protrusion are not provided. The linear elastic parts will shrink when squeezed, and the shrinking linear elastic parts and the adjacent non-shrinking linear elastic parts form a slot, which cooperates with the protrusion to engage with the slot, so that the protrusion can be engaged with the slot at any angle. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A schematic diagram of the structure of the driving device provided by the present invention;

[0055] Figure 2 It is a schematic diagram of the internal structure of the driving device;

[0056] Figure 3 It is a schematic diagram of the explosion of the linkage components and the shell;

[0057] Figure 4 is a schematic diagram of the connection between the locking member and the linkage member;

[0058] Figure 5 A schematic diagram of the second angle connection between the locking member and the linkage member;

[0059] Figure 6 is a schematic diagram of the connection between the locking member and the housing;

[0060] Figure 7 It is a schematic diagram of the connection between the toggle body and the ligand;

[0061] Figure 8 It is a cross-sectional view of the linkage components;

[0062] Figure 9Installation schematic diagram of the anti-rotation seat and the transition piece;

[0063] Figure 10 Schematic structural diagram of the linkage component in the first locked state;

[0064] Figure 11 Schematic diagram of the movement of the linear elastic member when the linkage component is in the first locked state;

[0065] Figure 12 Schematic structural diagram of the linkage component in the second locked state;

[0066] Figure 13 Schematic diagram of the movement of the linear elastic member when the linkage component is in the second locked state.

[0067] Explanation of the reference numerals in the drawings:

[0068] 1. Housing; 2. Anti-rotation seat; 3. Transition piece; 4. Motion conversion piece; 5. Driven piece; 6. Operating component; 7. Linkage component; 71. First annular seat; 711. Third mounting hole; 72. Second annular seat; 721. Fourth mounting hole; 8. Second protrusion; 9. Third protrusion; 10. Linear elastic member; 11. Locking member; 12. First elastic member; 13. First protrusion; 14. First card slot; 15. First mounting hole; 16. Dialing body; 17. Fitting body; 171. Pulling ring; 172. Fitting protrusion; 18. Operating end; 19. Second mounting hole; 20. Arc-shaped limiting strip; 21. First relief hole; 22. Radian limiting strip; 23. Annular outer edge; 24. Limiting block; 25. Second relief hole; 26. First annular sliding groove; 27. Second annular sliding groove. Detailed implementation manners

[0069] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention fall within the protection scope of the present invention.

[0070] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0071] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0072] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0073] This embodiment provides a specific implementation manner of the driving device, as Figures 1 to 10 shown, which includes a housing 1, a driving mechanism, a locking mechanism, and a linkage member 7.

[0074] Embodiment 1

[0075] This embodiment provides a driving device, as Figure 1 shown, which includes a housing 1, and a driving mechanism, a locking mechanism, and a linkage member 7 provided on the housing 1. Among them, the linkage member 7 is movably provided on the housing 1 and can be switched between a first locking state and a second locking state; the linkage member 7 is slidably and anti-rotatably sleeved on the driven member 5; as Figure 2 shown, two opposite first flat surfaces are provided on the outer wall surface of the driven member 5, and second flat surfaces corresponding to the first flat surfaces one by one are provided on the inner hole wall of the linkage member 7. With the cooperation of the first flat surface and the second flat surface, the anti-rotatable and slidable connection between the linkage member 7 and the driven member 5 is realized. The first flat surface can also be one, and correspondingly the second flat surface is one.

[0076] In the first locking state, the linkage member 7 is locked on the housing 1 by the first blocking force applied by the locking mechanism, and the driving mechanism drives the driven member 5 to slide relative to the linkage member 7; in the second locking state, the first blocking force is withdrawn, and the linkage member 7 is driven by the pulling force to move and lock on the driving mechanism, and is driven by the first driving mechanism to drive the driven member 5 to rotate synchronously.

[0077] In this embodiment, optionally, taking the driven member 5 as a torsion tube as an example to illustrate the driving device of this embodiment, an inner tube is fixedly provided in the torsion tube, and the sliding and rotation of the inner tube can be adjusted through the driving mechanism.

[0078] As Figure 3 and Figure 4 shown, the locking mechanism includes a locking member 11 and a return spring. The locking member 11 makes a telescopic motion along the radial direction of the housing 1 to apply a first blocking force to the linkage member 7, as Figure 4As shown, a first mounting hole 15 is provided on the locking member 11, and a return spring is installed in the first mounting hole 15. The locking member 11 tends to remain in the first locking state due to the return bias force.

[0079] like Figure 2 As shown, a limit block 24 is provided in the housing 1, and the limit block 24 forms a limit groove. The locking member 11 is slidably installed in the limit groove through the clamping blocks on both sides, so that the locking member 11 can complete the telescopic action in the housing 1, as shown in FIG. Figure 3 As shown, the locking member 11 is sleeved on the distal end of the linkage member 7, a first protrusion 13 is provided on the inner wall surface of the locking member 11, and an annular first groove 14 is provided on the outer wall surface of the linkage member 7; the inner side end of the locking member 11 extends into the housing 1, as shown in FIG. Figure 5 As shown, the outer end of the locking member 11 extends into the first clearance hole 21 on the housing 1 as the operating end 18 , and a button is provided on the operating end 18 , which is located in an annular retaining ring provided on the housing 1 on the outer periphery of the first clearance hole 21 .

[0080] A first mounting hole 15 is respectively provided on the two side walls of the locking member 11 along the radial direction of the inner tube. Optionally, there are two return springs, which are mounted in the first mounting holes 15 one by one, one end of the return spring is located in the first mounting hole 15, and the other end extends out of the first mounting hole 15 to connect to the housing 1. The return spring is a compression spring, which applies an upward return bias force to the locking member 11. In this embodiment, the return bias force serves as a first blocking force, so that the first protrusion 13 is clamped in the first clamping groove 14, thereby limiting the linkage component 7 on the locking member 11 in the radial direction of the housing 1, and then limiting it on the housing 1, so that the linkage component 7 is in the first locking state.

[0081] When the doctor Figure 3 When the button is pressed downward, the reset bias force is overcome, and the first protrusion 13 withdraws from the first slot 14, releasing the first blocking force, and the linkage component 7 and the locking member 11 are in an unlocked state, and the linkage component 7 can slide axially along the inner tube relative to the locking member 11.

[0082] The distal end of the operating component 6 is sleeved outside the proximal end of the shell 1 , the linkage component 7 is arranged in the proximal end of the shell 1 , the distal end of the transition piece 3 is arranged in the shell 1 , and its proximal end is arranged in the inner cavity of the operating component 6 .

[0083] The distal end of the transition piece 3 is anti-sliply arranged in the proximal inner cavity of the housing 1, such as Figure 8As shown, two arc limit strips 22 are provided on the proximal inner wall of the shell 1, and two annular outer edges 23 are provided on the proximal outer wall of the transition piece 3. The two annular outer edges 23 are located between the two arc limit strips 22, and the two annular outer edges 23 are respectively abutted against an arc limit strip 22, thereby limiting the axial sliding displacement of the transition piece 3, and the transition piece 3 can only rotate with the operating component 6.

[0084] The proximal end of the transition piece 3 is slidably and rotationally fixedly disposed in the inner cavity of the operating component. Figure 6 and Figure 7 As shown, two guide protrusions are provided on the outer wall surface of the transition piece, and the two guide protrusions are symmetrically arranged on both sides of the axis of the transition piece 3. The inner wall surface of the operating component 6 is provided with an arc-shaped limit strip 20 arranged axially and extending radially. The two arc-shaped limit strips 20 are respectively provided with a first slide groove and a second slide groove. The two guide protrusions are partially inserted into the first slide groove and the second slide groove, so that the transition piece 3 and the operating component 6 are anti-rotationally and slidably connected.

[0085] An annular toggle body 16 is provided on the inner wall surface of the operating component 6. For example, the toggle body 16 is a first annular groove 26 formed on the inner wall surface of the operating component 6. Figure 6 In the embodiment, the inner wall surface of the operating component 6 is provided with a recessed annular step, a washer or a retaining ring is provided on the right step surface of the annular step, and a first annular groove 26 is formed between the washer or the retaining ring and the left step surface of the annular step.

[0086] like Figure 3 and Figure 7 As shown, a second annular groove 27 is provided on the outer wall of the linkage component 7, and a matching body 17 is rotatably and anti-sliply provided on the linkage component 7. For example, the matching body 17 includes a pull ring 171 and a matching protrusion 172, and the pull ring 171 is rotatably sleeved on the second annular groove 27 of the linkage component 7, so that the linkage component 7 can rotate in the pull ring 171 and slide along with the pull ring 171, thereby realizing a rotatable anti-slip connection between the operating component and the matching body. The matching protrusion 172 extends out of the second clearance hole 25 on the housing 1 and rotatably extends into the first annular groove 26 of the operating component. The outer end surface of the matching protrusion and the groove bottom of the first annular groove 26 are clearance-matched, so that the operating component can rotate relative to the matching protrusion, and the two groove walls of the first annular groove 26 limit the axial direction of the matching protrusion, thereby realizing a rotatable anti-slip connection between the linkage component and the matching body.

[0087] like Figure 8As shown in the figure, the linkage component 7 includes a first annular seat 71 and a second annular seat 72. The proximal end of the first annular seat 71 is fixedly connected to the distal end of the second annular seat 72 by a snap connection. For example, the first annular seat 71 includes a first annular body and a first annular protrusion protruding from the distal end face of the first annular body. A snap hole is provided on the first annular body, and a radially protruding block is provided on the distal end of the second annular seat 72. The distal end of the second annular seat extends into the first annular seat body, and the block is snap-fitted into the snap hole. A third mounting hole 711 is provided on the first annular seat 71, and a fourth mounting hole 721 is provided on the second annular seat 72. A linear elastic member 10 is installed in both the third mounting hole 711 and the fourth mounting hole. A second annular chute 27 is provided on the outer peripheral wall of the second annular seat, and the fitting body 17 is sleeved in the second annular chute 27.

[0088] Optionally, as Figure 9 shown in the figure, the motion conversion member 4 is a first nut, which is fixed outside the torsion tube. A threaded fit is formed between the first nut and the inner wall surface of the transition member 3 to form a lead screw structure, and the transition member 3 is linked with the torsion tube through the first nut.

[0089] As an alternative embodiment, the motion conversion member 4 and the transition member 3 can also be arranged as a gear and rack structure. By rotating the gear, the rack is fixedly connected to the torsion tube, thereby driving the torsion tube to slide axially.

[0090] As Figure 9 shown in the figure, at least one first elastic member 12 is further included between the transition member 3 and the operating member 6. For example, the first elastic member 12 is a tension spring. In the second state, the first elastic member 12 releases energy to apply a biasing force to the operating member 6 to drive the linkage component 7 to slide towards the transition member 3. The number of tension springs can be one, two, three, etc. The specific number is determined according to requirements and is not limited.

[0091] In Figure 9 , second mounting holes 19 are provided on both side walls of the transition member 3. The orifice of the second mounting hole 19 faces the arc-shaped limiting strip 20 on the above-mentioned distal end. The tension spring is arranged in the second mounting hole 19, and both ends respectively abut against the hole wall ends of the second mounting hole 19 facing the orifice, and the other end abuts against the arc-shaped limiting strip 20. When the operating member 6 slides rightward relative to the transition member 3 in Figure 5 , the space between the arc-shaped limiting strip 20 and the second mounting hole 19 increases, the tension spring is stretched to release energy, and the released energy drives the arc-shaped limiting strip 20 to drive the operating member 6 and the linkage component 7 as a whole to move rightward.

[0092] As Figure 9 and Figure 11 shown in the figure, the linkage component 7 is located between the anti-rotation seat 2 and the transition member 3; as Figure 7As shown, among the end faces of the linkage member 7 and the anti-rotation seat 2 facing each other, at least one second protrusion 8 is provided on the end face of the anti-rotation seat 2, and second card slots corresponding one by one to the second protrusions 8 are provided on the end face of the linkage member 7. The second protrusions 8 are inserted and matched through the second card slots, so that in the first locked state, while the linkage member 7 is locked by the locking member 11, it is anti-rotationally arranged on the housing 1. At the same time, one end of the linkage member 7 provided with the second card slot abuts against the end face of the anti-rotation seat 2, playing a role in limiting the axial sliding position of the linkage member 7.

[0093] On the distal end face of the linkage member 7, a radially inwardly recessed card slot is provided, and a plurality of linear elastic members 10 arranged on the same circumference are provided on the end face of the linkage member 7;

[0094] As Figure 10 shown, when the linkage member 7 is in the first locked state, the linear elastic member 10 is retracted and deformed under the extrusion force of the protrusion of the second protrusion 8, and a second card slot is formed between the retracted and deformed linear elastic member 10 and its adjacent non-retracted and deformed linear elastic member 10; As Figure 12 and Figure 13 shown, when the linkage member 7 is in the second locked state, the linear elastic member 10 is retracted and deformed under the extrusion force of the third protrusion 9, and a second card slot or a third card slot is formed between the retracted linear elastic member 10 and its adjacent non-retracted linear elastic member 10, and they are respectively inserted and matched with the second protrusion 8 and the third protrusion 9. Optionally, the linear elastic member 10 is a spring pin.

[0095] It should be noted that: when the above-mentioned second card slot and third card slot are not formed by the linear elastic member 10, when switching from the second locked state to the first locked state, the linkage member 7 needs to rotate first to reset the third card slot and the second card slot to the positions corresponding to the previous first locked state, so that when the linkage member 7 slides towards the anti-rotation seat 2, the second card slot can be inserted and matched with the second protrusion 8; similarly, when the linkage member 7 slides towards the transition member 3 again, the third card slot can be inserted and matched with the third protrusion 9.

[0096] Working principle:

[0097] Initially, the distal end of the linkage member 7 is locked on the locking member 11 and is anti-rotationally restricted on the second protrusion 8 of the anti-rotation seat 2, being in the first locked state, and the operating member 6 is in the first state, as Figure 9 shown in the state shown in

[0098] First of all, as Figure 6 shown, when the operating member 6 rotates, it drives the transition member 3 to rotate synchronously, and the movement conversion member 4 threadedly engaged with the transition member 3 slides on the internal thread of the transition member 3 towards its proximal end or distal end, realizing fine adjustment of the axial displacement of the torsion tube and the inner tube until the axial displacement adjustment is in place.

[0099] Afterwards, the linkage component 7 switches from the first locking state to the second locking state, and the operating component 6 switches from the first state to the second state. Figure 3 In the process, the button on the locking member 11 is pressed downward to overcome the blocking of the biasing force of the return spring, and the first protrusion 13 is withdrawn from the first slot 14 downward. At this time, the second protrusion 8 is still inserted in the second slot, and the linkage member 7 can slide axially relative to the locking member 11 in the torsion tube; because the operating member and the transition member are anti-rotationally slidably connected, at this time Figure 11 The operating component 6 is pushed to the right, the distance between the operating component 6 and the transition piece 3 increases, the tension spring between the two releases energy, and drives the operating component 6 to slide toward the right, and the toggle body 16 on the operating component 6 acts on the matching protrusion 172, driving the matching body 17 and the linkage component 7 to slide toward the right as a whole, wherein the matching protrusion 172 slides in the second give way hole 25 of the shell until the second protrusion 8 on the anti-rotation seat 2 exits the second slot, and the retracted and deformed elastic pin corresponding to the second slot is reset, and the distal end of the linkage component 7 is completely withdrawn from the inner hole of the locking member 11. At this time, the button is released, and the locking member 11 is reset under the reset bias pressure, and the second protrusion 8 remains in the inner hole of the locking member 11. At the same time, the proximal end of the linkage component 7 is directly plugged into the third protrusion 9 of the transition piece 3, and the third protrusion 9 is plugged into the third slot formed by the elastic pin, and an anti-rotation and slidable lock is formed between the linkage component 7 and the transition piece 3, and the pushing of the operating component 6 is stopped.

[0100] After that, the operating component 6 starts to rotate. Since the operating component 6 and the transition piece 3 are slidably connected to each other in an anti-rotation manner, the operating component 6 and the matching protrusion 172 are rotatably connected to each other in an anti-sliding manner, and the matching body 17 is rotatably connected to the linkage component 7 in an anti-sliding manner, the operating component 6 drives the transition piece 3 to rotate. Since the linkage component 7 is locked on the transition piece 3 in an anti-rotation manner, and since the linkage component 7 is connected to the torsion tube in an anti-rotation manner, the linkage component 7, the torsion tube and the inner tube are synchronously driven to rotate. Then, the motion conversion component 4 and the transition piece 3 on the torsion tube rotate synchronously, and there is no relative movement between the two. In this process, the first annular groove of the operating component 6 rotates on the matching protrusion 172, and the linkage component 7 rotates relative to the pull ring 171. The pull ring 171 and the matching protrusion 172 remain in a stationary state on the housing 1 until the rotation angle of the inner tube is adjusted to the desired position, and the operating component 6 stops rotating. On the contrary, through the above reverse operation, the linkage component 7 is switched from the second locking state to the first locking state.

[0101] That is, in the driving device, due to the provision of the linkage component 7, only one driving mechanism is required to drive the driven member 5 to move and rotate along its axial direction, and there is no need to separately provide two sets of driving mechanisms to drive the driven member 5 to rotate and slide respectively. Therefore, the driving device can achieve the adjustment of the rotation and sliding of the driven member 5 while having a compact structure and occupying a small space.

[0102] Example 2

[0103] This embodiment provides a driving device, which is different from the driving device provided in Embodiment 1 in that:

[0104] For example, the matching body 17 can also be connected to the operating part 6 in a non-slip and rotatable manner in other ways. For example, the matching protrusion is connected to the inner wall of the operating part through a bearing; or no matching protrusion is provided, and the pull ring is directly provided on the inner wall of the operating part 6 through a bearing. In this case, the toggle body 16 and the matching body 17 are combined into one, and the whole is a bearing.

[0105] Alternatively, as a further variation, when the mating body 17 and the toggle body 16 are provided, the pull ring of the mating body 17 is directly fixed on the linkage component 7, and correspondingly, the mating protrusion is rotatably provided on the shell 1, or the mating protrusion avoids the shell 1 and is directly inserted into the first annular groove. In the first locking state, the operating component 6 can still rotate relative to the mating protrusion; in the second locking state, when the operating component 6 rotates, the linkage component 7 and the mating body 17 are synchronously driven to rotate.

[0106] Alternatively, as a further variation, the matching body 17 and the shifting body 16 are not provided, and the outer wall surface of the linkage component 7 and the inner wall of the operating component 6 are directly connected via a bearing.

[0107] Example 3

[0108] This embodiment provides a driving device, which is different from the driving devices provided in Embodiments 1 and 2 in that the driving mechanism is arranged in this embodiment. In this embodiment, the operating component 6 and the linkage component 7 are slidably anti-rotationally connected, and the operating component 6 and the transition piece 3 are rotatably anti-sliply connected. In this case, the above-mentioned motion conversion component 4 is not required, and the driven component 5 is directly fixed in the inner hole of the transition piece 3. The linkage component 7 and the driven component 5 are still anti-rotationally and slidably connected.

[0109] In the first state, the operating member 6 directly drives the transition member 3 to slide synchronously towards the proximal end or the distal end, so as to directly drive the driven member 5 to slide, realizing fine adjustment of the axial displacement of the driven member 5. Correspondingly, the linkage member 7 is in the first locked state, and the distal end of the linkage member is locked on the housing through the cooperation of the first protrusion and the first card slot, without the need to provide the anti-rotation seat 2 and the second protrusion 8 in Embodiment 1; in the second locked state, a pushing force towards the transition member 3 needs to be separately applied to the linkage member 7. For example, a separate operation button is provided on the housing 1 to directly push the linkage member 7 to slide, so that the linkage member 7 slides towards the transition member 3, and the proximal end of the linkage member 7 and the distal end of the transition member 3 still form an anti-rotation connection through the cooperation of the third protrusion 9 and the third card slot. In the second state, the operating member 6 rotates while driving the linkage member 7, the transition member 3 and the driven member 5 to rotate synchronously, realizing fine adjustment of the axial displacement of the driven member 5.

[0110] That is, in the first state, the operating member 6 moves synchronously with the transition member 3 to drive the driven member 5 to slide in a linkage manner, and the linkage member 7 is in the first locked state; in the second state, the operating member 6 moves relative to the transition member 3 and applies a pushing force to the linkage member 7 or is subjected to an external pushing force. The linkage member 7 is driven by the pushing force to move and is locked on the transition member 3, and then is driven by the operating member 6 to drive the driven member 5 to rotate and is in the second locked state.

[0111] In addition, the first blocking force in the locking mechanism may not be the reset biasing force in Embodiment 1, but the first blocking force is separately provided. For example, the reset spring is not provided, or when the reset spring is provided, after the first protrusion 13 is inserted and engaged with the first card slot 14, other detachable fixing structures are used to lock the locking member 11 and the linkage member 7, such as screws or bolt-nut assemblies, or snap structures, so as to apply the first blocking force to the linkage member 7 in the first locked state. In the second locked state, the first blocking force is cancelled, and the linkage member 7 can slide relative to the locking member 11.

[0112] That is, in the first locked state, the linkage member 7 is locked on the housing 1 by the first blocking force applied by the locking mechanism, and the driving mechanism drives the driven member 5 to slide relative to the linkage member 7; in the second locked state, the first blocking force is cancelled, and the linkage member 7 is driven by the pushing force to move and is locked on the driving mechanism, and is driven by the driving mechanism to drive the driven member 5 to rotate synchronously.

[0113] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or alterations can be made based on the above description. It is not necessary and impossible to enumerate all implementation manners here. And the obvious changes or alterations derived therefrom still fall within the protection scope of the present invention.

Claims

1. A driving device, characterized in that, including a driving mechanism, arranged on the housing (1); a locking mechanism, arranged on the housing (1); a linkage member (7), movably arranged on the housing (1) and capable of switching between a first locked state and a second locked state; it is adapted to be slidably and anti-rotationally connected to the driven member (5), wherein a first flat surface is provided on the outer wall surface of the driven member (5), and a second flat surface corresponding to the first flat surface is provided on the inner hole wall of the linkage member (7); an anti-rotation mechanism is arranged in the housing (1), and the anti-rotation mechanism includes: a rotation stopping seat (2) arranged in the housing (1), and the driving mechanism includes a transition member (3) fixedly connected to the driven member. In the first locked state, the end faces of the linkage member (7) and the rotation stopping seat (2) facing each other are adapted to be plugged and matched together, and the end faces of the linkage member (7) and the transition member (3) facing each other are separated; in the second locked state, the end faces of the linkage member (7) and the rotation stopping seat (2) facing each other are separated, and the end faces of the linkage member (7) and the transition member (3) facing each other are adapted to be plugged and matched together; in the first locked state, the linkage member (7) is locked on the housing (1) by a first blocking force applied by the locking mechanism, and the driving mechanism drives the driven member (5) to slide relative to the linkage member (7); in the second locked state, the first blocking force is withdrawn, and the linkage member (7) is driven by a pulling force to move and lock on the driving mechanism, and is driven by the driving mechanism to drive the driven member (5) to rotate synchronously; in the first locked state, the pulling force is withdrawn.

2. The drive device according to claim 1, characterized in that, The locking mechanism includes a locking member (11) arranged on the housing (1), and the locking member (11) applies the first blocking force to the linkage member (7) through a telescopic movement; in the first locked state, the locking member (11) is locked with the linkage member (7); in the second locked state, the locking member (11) is separated from the linkage member (7); the locking member (11) is biased by a reset biasing force to tend to remain in the first locked state.

3. The drive device according to claim 2, characterized in that, Among the surfaces of the locking member (11) and the linkage member (7) facing each other, at least one first protrusion (13) is provided on one surface, and a first card slot (14) corresponding to the first protrusion (13) one by one is provided on the other surface; in the first locked state, the first protrusion (13) is plugged and matched with the first card slot (14); in the second locked state, the first protrusion (13) is separated from the first card slot (14).

4. The drive device according to claim 3, characterized in that in the first locked state, the locking member (11) is sleeved outside the distal end of the linkage member (7), and one of the first protrusion (13) and the first card slot (14) is arranged on the inner wall surface of the locking member (11), and the other is arranged on the outer wall surface of one end of the linkage member (7); the operating end (18) of the locking member (11) extends outside a first relief hole (21) provided on the housing (1), and the locking member makes a telescopic movement along the radial direction of the inner tube.

5. The drive device according to any one of claims 2 to 4, characterized in that, The driving mechanism comprises an operating component (6) which is movably arranged on the housing (1) between a first state and a second state; In the first state, the operating component (6) moves synchronously with the transition component (3) to drive the driven component (5) to slide, and the linkage component (7) is in a first locking state; In the second state, the linkage component is driven by the pulling force to move and lock on the transition component (3), and is then driven by the operating component to drive the driven component to rotate and enter the second locking state.

6. The drive device according to claim 5, characterized in that The operating component is slidably and rotatably arranged on the housing, and the operating component (6) is slidably and anti-rotatably connected to the transition piece (3); The driving mechanism further comprises a motion conversion member (4) arranged in linkage with the transition member (3), wherein the motion conversion member (4) is fixedly connected to the driven member (5) and is used for converting the rotational motion of the transition member into linear sliding; In the first state, the operating component (6) drives the transition piece (3) to rotate, thereby driving the motion conversion component (4) to slide on the transition piece (3); the distal end of the linkage component (7) is locked on the locking component (11), and the proximal end thereof faces the transition piece (3); In the second state, the operating component (6) slides relative to the transition component (3) to apply a pushing force to the matching body (17), and the linkage component (7) is driven by the pushing force to slide toward the transition component (3) and lock on the transition component (3), and is then driven by the synchronous rotation of the operating component (6) and the transition component (3) to drive the driven component (5) to rotate.

7. The drive device according to claim 6, characterized in that, The linkage component (7) is provided with a matching body (17); the operating component (6) is provided with a shifting body (16); The toggle body (16) is rotatably and anti-sliply connected to the matching body (17); in the second state, the operating component slides through the toggle body (16) to apply a toggle force to the matching body (17); The matching body (17) is anti-slip and rotatably arranged on the linkage component (7); The matching body (17) is driven by the pushing force to cause the linkage component (7) to slide synchronously relative to the housing (1); the linkage component (7) is driven by the synchronous rotation of the operating component (6) and the transition component (3) to rotate relative to the matching body (17).

8. The drive device according to claim 7, characterized in that, The matching body (17) comprises an annular pull ring and a matching protrusion radially protruding outside the pull ring; The distal end of the operating component (6) is sleeved outside the proximal end of the housing (1), and the shifting body (16) is a first annular sliding groove (26) provided on the inner wall surface of the operating component (6); The linkage component (7) is located inside the housing (1), and the pull ring can be rotatably sleeved into a second annular groove (27) on the outer periphery of the linkage component (7); the matching protrusion passes through a second clearance hole (25) provided on the housing (1) and can be rotatably inserted into the first annular groove (26), and slides in the second clearance hole (25) under the pulling force.

9. The drive device according to claim 8, characterized in that, The proximal end of the transition member (3) is rotatably and anti-slidingly arranged in the housing (1), and the distal end of the transition member (3) is arranged in the inner cavity of the operating member (6).

10. The drive device according to any one of claims 6 - 9, characterized in that It further includes at least one first elastic member (12) arranged between the transition member (3) and the operating member (6); In the second state, the first elastic member (12) releases energy to apply a biasing force to the operating member (6) to drive the linkage member (7) to slide in the direction of the transition member (3).

11. The drive device according to claim 10, characterized in that, The anti-rotation mechanism includes a second protrusion (8) arranged on one end face of the mutually facing end faces of the linkage member (7) and the anti-rotation seat (2), and a second card slot arranged on the other end face and capable of being inserted and matched with the second protrusion (8) one by one; In the first locked state, the second protrusion (8) is inserted into the second card slot; in the second locked state, the second protrusion (8) is separated from the second card slot.

12. The drive device according to claim 11, characterized in that, In the mutually facing end faces of the linkage member (7) and the transition member (3), a third protrusion (9) is arranged on one end face, and a third card slot capable of being inserted and matched with the third protrusion (9) one by one is arranged on the other end face; In the second locked state, the third protrusion (9) is inserted into the third card slot, and in the first locked state, the third protrusion (9) is separated from the third card slot.

13. The drive device according to claim 12, characterized in that, A plurality of linear elastic members (10) arranged on the same circumference are provided on the end face where the second protrusion (8) or the third protrusion (9) is not provided; Corresponding to their respective locked states, at least one linear elastic member (10) is retracted and deformed under the extrusion force of the corresponding protrusion, and a card slot is formed between the retracted linear elastic member (10) and its adjacent non-retracted linear elastic member (10) for the protrusion to be inserted and matched.

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