CN217548110U - Drive mechanism and medical instrument - Google Patents

Abstract

The utility model relates to an actuating mechanism and medical apparatus, actuating mechanism include first driving medium, second driving medium, switching module and electric drive subassembly. When the driving object needs to be switched, for example, when the first transmission piece needs to be driven, the first transmission piece is selectively connected through the switching assembly, and the electric driving assembly drives the first transmission piece through the switching assembly. Otherwise, the switching component is selectively connected with the second transmission component, and the electric driving component drives the second transmission component through the switching component. Therefore, the driving mechanism does not need to be provided with two or more driving power structures for respectively driving the first transmission piece and the second transmission piece, the arrangement of a power part can be effectively reduced, the size of the whole structure can be conveniently reduced, and the cost can be reduced; and realize the electric drive to first driving medium and second driving medium, need not manual operation, it is more convenient to operate.

Description

Drive mechanism and medical instrument

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to actuating mechanism and medical instrument.

Background

For surgical tools in the field of surgical medical treatment, for example, in surgical operations on a spine, joints, and the like, a grinding tool is generally used for cutting or grinding bone tissues, and particularly, in the precise grinding operation process of bone tissues in minimally invasive spine and minimally invasive joint operations, lateral bending or rotation and other motions of the grinding tool are generally realized through a transmission structure. When two or more transmission structures are needed, the corresponding transmission structures are generally respectively driven by arranging at least two power parts, which not only causes the increase of cost, but also causes the increase of power structures; moreover, doctors are required to manually operate each transmission structure respectively to realize the transmission of the corresponding transmission structure.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a driving mechanism and a medical instrument for solving the problems of increased structure volume, increased cost and inconvenient driving operation of the transmission structure due to the need of providing at least two driving power structures for driving two or more transmission structures respectively.

A driving mechanism comprises a switching component, a first transmission piece, a second transmission piece and an electric driving component; the electric driving assembly is in driving connection with the switching assembly, the switching assembly is selectively connected with the first transmission piece or the second transmission piece, and then the electric driving assembly selectively drives the first transmission piece or the second transmission piece.

In one embodiment, the second transmission member is coaxial with and spaced apart from the first transmission member, and the switching assembly includes a switching wheel movable between the first transmission member and the second transmission member to selectively drivingly connect the first transmission member or the second transmission member; the electric driving assembly is connected with the switching wheel to drive the switching wheel to rotate, and further drives the first transmission piece or the second transmission piece to rotate.

In one embodiment, the first transmission piece is circumferentially provided with first matching teeth, the second transmission piece is circumferentially provided with second matching teeth, and the switching wheel is circumferentially provided with meshing teeth; when the switching wheel moves to the first transmission piece to enable the meshing teeth to be meshed with the first matching teeth, the electric driving assembly drives the first transmission piece to rotate through the switching wheel; when the switching wheel moves to the second transmission piece to enable the meshing teeth to be meshed with the second matching teeth, the electric driving component drives the second transmission piece to rotate through the switching wheel.

In one embodiment, a first matching tooth is formed on the end surface of the first transmission piece facing the second transmission piece, and a second matching tooth is formed on the end surface of the second transmission piece facing the first transmission piece; the switching wheel is arranged between the first transmission piece and the second transmission piece and is coaxially arranged with the first transmission piece and the second transmission piece; the end face, facing the first transmission piece, of the switching wheel is provided with first meshing teeth, and the end face, facing the second transmission piece, of the switching wheel is provided with second meshing teeth; when the switching wheel moves to the first transmission piece to enable the first meshing teeth to be meshed with the first matching teeth, the electric driving component drives the first transmission piece to rotate through the switching wheel; when the switching wheel moves to the second transmission piece to enable the second meshing teeth to be meshed with the second matching teeth, the electric driving component drives the second transmission piece to rotate through the switching wheel.

In one embodiment, the switching assembly further comprises a shifting unit, and the shifting unit is connected with the switching wheel and used for driving the switching wheel to move between the first transmission piece and the second transmission piece.

In one embodiment, the shifting unit comprises a shifting fork and a moving member, a shifting fork fixing structure is arranged on the outer wall of the switching wheel, one end of the shifting fork is connected with the shifting fork fixing structure, the other end of the shifting fork is connected with the moving member, and the moving member is used for driving the shifting fork to drive the switching wheel to move between the first transmission member and the second transmission member.

In one embodiment, the shifting fork fixing structure is a groove formed on the outer wall of the switching wheel, and one end of the shifting fork is arranged in the groove;

or the shifting fork fixing structure is two bulges which are axially arranged on the outer wall of the switching wheel at intervals, a groove is formed in the space between the two bulges, and one end of the shifting fork is arranged in the groove.

In one embodiment, the moving part comprises an electromagnet, a connecting part and a return spring, the other end of the shifting fork is arranged on the connecting part, the connecting part can axially move, and the axial moving direction of the connecting part is the same as the axial extending direction of the first transmission part and the second transmission part; the electromagnet is arranged along the axial moving direction of the connecting piece and used for adsorbing the connecting piece, so that the shifting fork drives the switching wheel to move towards one direction of the first transmission piece and the second transmission piece; the reset spring is sleeved on the connecting piece and used for applying axial movement reset force to the connecting piece when the connecting piece is not adsorbed by the electromagnet, so that the shifting fork drives the switching wheel to move towards the other direction of the first transmission piece and the second transmission piece.

In one embodiment, the electric driving assembly includes a power shaft and a power source, the switching wheel is provided with a power hole, one end of the power shaft penetrates through the power hole, the power shaft and the switching wheel are circumferentially fixed, the other end of the power shaft is connected to the power source, and the power source drives the power shaft to drive the switching wheel to rotate.

In one embodiment, the electric driving assembly includes a power shaft and a power source, the switching wheel has a power hole, the first transmission member has a first driving hole, the second transmission member has a second driving hole, the first driving hole and the second driving hole are both coaxial with the power hole, one end of the power shaft sequentially penetrates through the first driving hole, the power hole and the second driving hole, the power shaft and the switching wheel are circumferentially fixed and axially slide, and the power shaft and the first driving hole and the second driving hole can circumferentially slide; the other end of the power shaft is connected with the power source, and the power source drives the power shaft to drive the switching wheel to rotate.

In one embodiment, the driving mechanism further includes a first supporting seat and a second supporting seat, and the first transmission member and the second transmission member are coaxially arranged at an interval; a first supporting shaft is formed on one side, back to the second transmission piece, of the first transmission piece, and the first supporting shaft is rotatably arranged on the first supporting seat; and a second supporting shaft is formed on one side, back to the first transmission piece, of the second transmission piece, and the second supporting shaft is rotatably arranged on the second supporting seat.

A medical instrument comprising a drive mechanism as described above.

When the driving object needs to be switched, for example, when the first transmission piece needs to be driven, the driving mechanism and the medical instrument are selectively connected with the first transmission piece through the switching component, and the electric driving component drives the first transmission piece through the switching component. Otherwise, the switching component is selectively connected with the second transmission component, and the electric driving component drives the second transmission component through the switching component. Therefore, the driving mechanism does not need to be provided with two or more driving power structures for respectively driving the first transmission piece and the second transmission piece, the arrangement of a power part can be effectively reduced, the size of the whole structure can be conveniently reduced, and the cost can be reduced; and realize the electric drive to first driving medium and second driving medium, need not manual operation, it is more convenient to operate.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Furthermore, the drawings are not to scale as 1:1, and the relative sizes of the various elements are drawn in the drawings by way of example only and not necessarily to true scale. In the drawings:

FIG. 1 is a schematic diagram of a driving mechanism in one embodiment;

FIG. 2 is a front view of the drive mechanism shown in FIG. 1;

FIG. 3 is a partial cross-sectional view of the drive mechanism shown in FIG. 1;

FIG. 4 is a schematic structural diagram of the switching wheel of FIG. 3;

FIG. 5 is a front view of the switching wheel shown in FIG. 4;

FIG. 6 is a side view of the diverter wheel shown in FIG. 5;

FIG. 7 is a schematic view of a portion of the toggle unit of FIG. 3;

FIG. 8 is a cross-sectional view of the toggle unit shown in FIG. 7;

FIG. 9 is a schematic view of the fork and link of FIG. 7;

FIG. 10 is a schematic structural view of the first transmission member and the supporting base shown in FIG. 3;

fig. 11 is a cross-sectional view of the first transmission member and the support base shown in fig. 10;

FIG. 12 is a schematic view of a medical device according to an embodiment;

fig. 13 is a cross-sectional view of the medical device illustrated in fig. 12.

Description of reference numerals:

10. a medical device; 100. a drive mechanism; 102. a switching component; 110. a first transmission member; 112. a first mating tooth 114, a first drive aperture; 116. a first support shaft; 118. a first support hole; 120. a second transmission member; 122. a second mating tooth; 124. a second drive aperture; 126. a second support shaft; 128. a second support hole; 130. a switching wheel; 131. a first meshing tooth; 132. a second meshing tooth; 133. a groove; 134. the protrusion 135, the power hole 140 and the poking unit; 141. a shifting fork; 142. a moving member; 143. an electromagnet; 144. a connecting member; 145. a return spring; 150. an electric drive assembly; 152. a power shaft; 154. a power source; 160. a first support base; 170. a second support seat; 200. a first linkage assembly; 210. a cutter tube adjusting sleeve; 220. a first driven wheel; 230. a first drive belt; 240. a first steering wheel; 300. a second linkage assembly; 310. a tool bit adjusting sleeve; 320. a support member; 330. a second driven wheel; 340. a second belt; 350. a second steering wheel; 400. a medical knife; 410. a knife pipe; 420. a cutter head; 430. a pulling member.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 to 3, the driving mechanism 100 according to an embodiment of the present invention includes a switching component 102, a first transmission component 110, a second transmission component 120 and an electric driving component 150, wherein the electric driving component 150 is drivingly connected to the switching component 102, and the switching component 102 is selectively connected to the first transmission component 110 or the second transmission component 120, so that the electric driving component 150 selectively drives the first transmission component 110 or the second transmission component 120.

When the driving object needs to be switched, for example, when the first transmission member 110 needs to be driven, the switching assembly 102 is selectively connected to the first transmission member 110, and the electric driving assembly 150 drives the first transmission member 110 through the switching assembly 102. Conversely, the switching component 102 is selectively connected to the second transmission component 120, and the electric driving component 150 drives the second transmission component 120 through the switching component 102. Therefore, the driving mechanism 100 does not need to provide two or more driving power structures for driving the first transmission member 110 and the second transmission member 120 respectively, so that the number of power parts can be reduced effectively, the size of the whole structure can be reduced conveniently, and the cost can be reduced; and the electric driving of the first transmission member 110 and the second transmission member 120 is realized, the manual operation is not needed, and the operation is more convenient.

In one embodiment, the first transmission member 110 and the second transmission member 120 are coaxially and separately disposed, and the switching assembly 102 includes a switching wheel 130, where the switching wheel 130 is movable between the first transmission member 110 and the second transmission member 120 to selectively connect the first transmission member 110 or the second transmission member 120 in a transmission manner; the electric driving assembly 150 is connected to the switching wheel 130 to drive the switching wheel 130 to rotate, so as to drive the first transmission member 110 or the second transmission member 120 to rotate. Specifically, the first transmission member 110 and the second transmission member 120 are both wheel-shaped structures, so as to facilitate transmission of the rotational power. The switching wheel 130 is driven to rotate by the electric driving assembly 150, so that the rotation is transmitted to the first transmission member 110 or the second transmission member 120.

In one embodiment, the first transmission member 110 is formed with a first mating tooth along the circumferential direction, the second transmission member 120 is formed with a second mating tooth along the circumferential direction, and the switching wheel 130 is provided with a meshing tooth along the circumferential direction; when the switching wheel 130 moves to the first transmission member 110 to engage the engaging teeth with the first mating teeth, the electric driving assembly 150 drives the first transmission member 110 to rotate through the switching wheel 130; when the switching wheel 130 moves to the second transmission member 110 to engage the engaging teeth with the second mating teeth, the electric driving assembly 150 drives the second transmission member 120 to rotate through the switching wheel 130.

In this embodiment, the first transmission member 110 may be a gear, the second transmission member 120 may be a gear, and the switching wheel 130 may also be a gear. The switching wheel 130 is engaged with the first transmission member 110 or the second transmission member 110, so that the first transmission member 110 or the second transmission member 110 is driven to rotate respectively.

In one embodiment, a first engaging tooth 112 is formed on an end surface of the first transmission member 110 facing the second transmission member 120, and a second engaging tooth 122 is formed on an end surface of the second transmission member 120 facing the first transmission member 110; the switching wheel 130 is disposed between the first transmission member 110 and the second transmission member 120, and is disposed coaxially with the first transmission member 110 and the second transmission member 120, a first engaging tooth 131 is disposed on an end surface of the switching wheel 130 facing the first transmission member 110, and a second engaging tooth 132 is disposed on an end surface of the switching wheel 130 facing the second transmission member 120; when the switching wheel 130 moves to the first transmission member 110 to engage the first engaging tooth 131 with the first mating tooth 112, the electric driving assembly 150 drives the first transmission member 110 to rotate via the switching wheel 130. When the switching wheel 130 moves to the second transmission member 120 to engage the second engaging teeth 132 with the second mating teeth 122, the electric driving assembly 150 drives the second transmission member 120 to rotate through the switching wheel 130.

When in use, the electric driving assembly 150 drives the switching wheel 130 to rotate, and the switching wheel 130 moves towards the first transmission member 110, so that the first engaging teeth 131 are engaged with the first engaging teeth 112, and the rotation of the switching wheel 130 can be transmitted to the first transmission member 110; because the first engaging tooth 131 is disposed on the end surface of the switching wheel 130 facing the first transmission member 110, in the process that the switching wheel 130 moves toward the first transmission member 110, the first engaging tooth 131 is gradually close to the first mating tooth 112 and is engaged with the first mating tooth, and other alignment requirements are not required to be met in the engaging process, so that the switching is smoother, and the switching stability is better. Similarly, when the switching wheel 130 moves toward the second transmission member 120, the second engaging teeth 132 are engaged with the second engaging teeth 122, so that the switching is smoother and the switching stability is better.

Referring to fig. 3 and 4 to 6, in an embodiment, the first engaging tooth 131 includes a plurality of teeth, each of the teeth of the first engaging tooth 131 is disposed around an axis of the switching wheel 130, the teeth of the first engaging tooth 131 are disposed toward the first transmission member 110, and the first engaging tooth 112 is adapted to the first engaging tooth 131. The plurality of teeth of the first engaging teeth 131 can ensure an engaging area, thereby ensuring stability of transmission after engagement. And further ensures the effective meshing of the first engaging tooth 131 and the first mating tooth 112 during the process of moving the switching wheel 130 toward the first transmission member 110 by the tooth facing the first transmission member 110.

In one embodiment, the second engagement tooth 132 includes a plurality of teeth, each tooth of the second engagement tooth 132 is disposed around an axis of the switching wheel 130, the teeth of the second engagement tooth 132 are disposed toward the second transmission member 120, and the second mating tooth 122 is adapted to the second engagement tooth 132. The meshing area can be ensured by providing the second meshing teeth 132 as an annular rack structure, ensuring the stability of the transmission after meshing. And effective engagement of the second engagement teeth 132 with the second mating teeth 122 is further ensured by the teeth of the second engagement teeth 132 facing the second transmission member 120.

In one embodiment, the switching assembly 102 further includes a toggle unit 140, and the toggle unit 140 is connected to the switching wheel 130 and is used for driving the switching wheel 130 to move between the first transmission member 110 and the second transmission member 120. Specifically, the toggle unit 140 is configured to drive the switching wheel 130 to move between the first transmission member 110 and the second transmission member 120, so as to engage the first engaging tooth 131 with the first mating tooth 112 or engage the second engaging tooth 132 with the second mating tooth 122. The movement control of the switching wheel 130 is facilitated by the provision of the toggle unit 140.

Referring to fig. 3, 5 and 7, specifically, the shifting unit 140 includes a shifting fork 141 and a moving member 142, a shifting fork fixing structure is disposed on an outer wall of the switching wheel 130, one end of the shifting fork 141 is connected to the shifting fork fixing structure, the other end of the shifting fork 141 is connected to the moving member 142, and the moving member 142 is used for driving the shifting fork 141 to drive the switching wheel 130 to move between the first transmission member 110 and the second transmission member 120. The shifting fork 141 is driven by the moving part 142 to drive the switching wheel 130 to move.

In one embodiment, the fork fixing structure is a groove 133 formed on an outer wall of the switching wheel 130, and one end of the fork 141 is disposed in the groove 133. Specifically, the fork fixing structure is an annular groove formed on an outer wall of the switching wheel 130 around an axis of the switching wheel 130. Since the fork 141 is disposed in the groove 133, when the electric driving assembly 150 drives the switching wheel 130 to rotate, the fork 141 does not limit the rotation of the switching wheel 130. In another embodiment, the groove 133 may also be an arc-shaped groove.

In another embodiment, the fork fixing structure is two protrusions 134 spaced apart from each other in an axial direction on an outer wall of the switching wheel 130, a space between the two protrusions 134 forms the groove 133, and one end of the fork 141 is disposed in the groove 133. The two protrusions 134 can effectively limit the axial positions of the shift fork 141 and the switching wheel 130, and can not limit the rotation of the shift fork 141 and the switching wheel 130. In other embodiments, the groove 133 may be formed by forming a groove on the outer wall of the switching wheel 130.

In other embodiments, the shifting fork fixing structure may also be a sliding ring sleeved on an outer wall of the switching wheel 130, the sliding ring can rotate relative to the switching wheel 130, and one end of the shifting fork 141 is connected to the sliding ring.

In another embodiment, the number of the shift forks 141 is at least two, each shift fork 141 is respectively disposed in the groove 133 around the axis of the switching wheel 130, and the moving member 142 can simultaneously drive each shift fork 141 to simultaneously move. Toggle switching wheel 130 simultaneously and remove through setting up two at least shift forks 141, can guarantee to switch the stability of wheel 130 removal in-process, avoid rocking at the in-process that removes. In other embodiments, one fork 141 may be provided.

Referring to fig. 8 and 9, in an embodiment, the moving member 142 includes an electromagnet 143, a connecting member 144 and a return spring 145, the other end of the shifting fork 141 is disposed on the connecting member 144, the connecting member 144 is axially movable, and the axial moving direction of the connecting member 144 is the same as the axial extending direction of the first transmission member 110 and the second transmission member 120; the electromagnet 143 is arranged along an axial moving direction of the connecting member 144, and is configured to attract the connecting member 144, so that the shifting fork 141 drives the switching wheel 130 to move towards one of the first transmission member 110 and the second transmission member 120; the return spring sleeve 142 is disposed on the connecting member 144, and is configured to apply a return force of the axial movement to the applying connecting member 143 when the connecting member 144 is not attracted by the electromagnet 143, so that the shift fork drives the switching wheel to move in a direction of the other of the first transmission member and the second transmission member.

For example, in a normal state, the switching wheel 130 is engaged with the first transmission member 110; when the switching wheel 130 is engaged with the second transmission member 120, the electromagnet 143 is energized to attract the connecting member 144 to move axially and drive the shifting fork 141 to push the switching wheel 130 to move toward the second transmission member 120, so that the second engaging teeth 132 are engaged with the second engaging teeth 122 to transmit power to the second transmission member 120. When the switching wheel 130 is required to be matched with the first transmission member 110, the electromagnet 143 is powered off, and the return spring 145 drives the shifting fork 141 to return through the connecting member 144, so that the switching wheel 130 moves towards the first transmission member 110, and the first engaging teeth 131 are engaged with the first matching teeth 112, thereby transmitting power to the first transmission member 110.

In this embodiment, the connecting member 144 is a shaft-shaped structure, the fork 141 is disposed at one end of the connecting member 144, the return spring 145 is sleeved on the connecting member 144, the electromagnet 143 is disposed at one side of the axial direction of the connecting member 144, and the elastic force applied to the connecting member 144 by the return spring 145 is opposite to the direction of the attraction force applied to the connecting member 144 after the electromagnet 143 is energized.

In other embodiments, the return spring 145 may be a rubber band or other structure capable of returning the connecting member 144. And the link 144 may be a structure capable of realizing other shapes of the link fork 141.

In other embodiments, the electromagnet 143 can be replaced by a relay, hydraulic device, electric push rod, or other device capable of driving the link 144.

Referring to fig. 1 to 3 and fig. 4, in this embodiment, the electric driving assembly 150 includes a power shaft 152 and a power source 154, a power hole 135 is formed in the switching wheel 130, one end of the power shaft 152 is inserted into the power hole 135, the power shaft 152 is circumferentially fixed to the switching wheel 130, the other end of the power shaft 152 is connected to the power source 154, and the power source 154 is used for driving the power shaft 152 to drive the switching wheel 130 to rotate. The power shaft 152 facilitates the connection with the switching wheel 130, and thus the power source 154 can effectively drive the switching wheel 130 to rotate.

Referring to fig. 6, in the present embodiment, a key is disposed on the power shaft 152, a key slot is disposed on an inner wall of the power hole 135, and the power shaft 152 and the switching wheel 130 are connected in a manner that the key slot is matched with the key. In other embodiments, the power shaft 152 may also fit within the power bore 135 via a contoured configuration, or may fit within the power bore 135 in other ways, so long as an effective connection of the power shaft 152 to the switching wheel 130 and the ability to transmit rotation to the switching wheel 130 is ensured.

In one embodiment, the switching wheel 130 can move axially relative to the power shaft 152 to facilitate connection between the switching wheel 130 and the first transmission member 110 or the second transmission member 120. Alternatively, the switching wheel 130 may be axially fixed to the power shaft 152.

Referring to fig. 3, in an embodiment, the electric driving assembly 150 includes a power shaft 152 and a power source 154, the switching wheel 130 is provided with a power hole 135, the first transmission member 110 is provided with a first driving hole 114, the first driving hole 114 and the power hole 135 are coaxially disposed, one end of the power shaft 152 sequentially penetrates through the first driving hole 114 and the power hole 135, the power shaft 152 and the switching wheel 130 are circumferentially fixed and axially slide, and the power shaft 152 and the first driving hole 114 can circumferentially slide; the other end of the power shaft 152 is connected to the power source 154, and the power source 154 drives the power shaft 152 to drive the switching wheel 130 to rotate. The first transmission piece 110 penetrates through the power shaft 152, so that the positions of the first transmission piece 110 and the switching wheel 130 are effectively limited, and the meshing stability is ensured.

Specifically, a second driving hole 124 is formed in the second transmission member 120, the first driving hole 114 and the second driving hole 124 are both coaxial with the power hole 135, the power shaft 152 sequentially penetrates through the first driving hole 114, the power hole 135 and the second driving hole 124, and the power shaft 152 and the second driving hole can circumferentially slide. The second transmission member 120 is arranged on the power shaft 152 in a penetrating manner, so that the relative positions of the second transmission member 120 and the switching wheel 130 are further limited, and the stability of the switching wheel 130 in meshing with the second transmission member 120 is ensured.

Referring to fig. 3, 10 and 11, in an embodiment, the driving mechanism 100 further includes a first supporting seat 160, and the first transmission member 110 and the second transmission member 120 are disposed coaxially and at an interval; a first supporting shaft 116 is formed on a side of the first transmission member 110 opposite to the second transmission member 120, and the first supporting shaft 116 is rotatably disposed on the first supporting seat 160. By arranging the first supporting shaft 116 to cooperate with the first supporting seat 160, the stability of the arrangement of the first transmission member 110 can be further improved, so as to further ensure the effective engagement between the switching wheel 130 and the first transmission member 110.

Specifically, a first supporting hole 118 communicated with the first driving hole 114 is formed in the first supporting shaft 116, and the power shaft 152 can further penetrate through the first supporting hole 118, so that the stability of the first transmission member 110 arranged on the power shaft 152 is further improved.

In another embodiment, the driving mechanism 100 further includes a second supporting seat 170, and a second supporting shaft 126 is formed on a side of the second transmission member 120 opposite to the first transmission member 110, and the second supporting shaft 126 is rotatably disposed on the second supporting seat 170. By providing the second supporting shaft 126 to cooperate with the second supporting seat 170, the stability of the arrangement of the second transmission member 120 can be further improved, so as to further ensure the effective engagement of the switching wheel 130 and the second transmission member 120.

Specifically, a second support hole 128 communicated with the second driving hole 124 is formed in the second support shaft 126, and the power shaft 152 can be further arranged in the second support hole 128 in a penetrating manner, so that the stability of the second transmission member 120 arranged on the power shaft 152 is further improved.

Referring to fig. 12, in an embodiment, the driving mechanism 100 is applied to a medical apparatus 10, and specifically, the medical apparatus 10 includes the driving mechanism 100, a first linkage assembly 200, and a second linkage assembly 300 in any of the embodiments, the first linkage assembly 200 is connected to the first transmission member 110, and the second linkage assembly 300 is connected to the second transmission member 120. The power of the first transmission member 110 is further transmitted through the first linkage assembly 200, and the power of the second transmission member 120 is transmitted through the second linkage assembly 300.

In one embodiment, the medical apparatus 10 includes a medical knife 400, the medical knife 400 includes a knife tube 410, a knife head 420 and a pulling member 430, the pulling member 430 is disposed in the knife tube 410, the knife head 420 is hinged to one end of the pulling member 430, the knife tube 410 can drive the knife head 420 to rotate around an axis of the knife tube 410, and the pulling member 430 can move in the knife tube 410 along an axial direction of the knife tube 410, so that the knife head 420 can bend laterally relative to the axis of the knife tube 410.

Specifically, the first linkage assembly 200 includes a knife pipe adjusting sleeve 210, a first driven wheel 220 and a first transmission belt 230, the knife pipe adjusting sleeve 210 is used for being sleeved on a knife pipe 410, the first transmission member 110 and the first driven wheel 220 are arranged at intervals, the first transmission belt 230 is sequentially arranged on the first transmission member 110 and the first driven wheel 220 in a spanning manner, the first driven wheel 220 is sleeved on the knife pipe adjusting sleeve 210, and the first driven wheel 220 can synchronously rotate with the knife pipe adjusting sleeve 210. The knife tube 410 is driven to rotate by driving the knife tube adjusting sleeve 210, so that the purpose of adjusting the angle of the knife head 420 around the axis of the knife tube 410 is achieved.

Further, the first linkage assembly 200 further includes a first steering wheel 240, the first steering wheel 240 is disposed between the first transmission member 110 and the first driven wheel 220, the first steering wheel 240, the first driven wheel 220 and the first transmission member 110 are located on a non-collinear line, and the first transmission belt 230 is spanned over the first steering wheel 240 by the first transmission member 110 and spanned over the first driven wheel 220. The first steering wheel 240 is arranged to change the direction of the first transmission belt 230, so that the first transmission member 110 and the first driven wheel 220 are not limited in position by the arrangement of the first transmission belt 230. In other embodiments, the first steering wheel 240 may also be omitted.

In one embodiment, the second linkage assembly 300 includes a cutter head adjusting sleeve 310, a supporting member 320, a second driven wheel 330 and a second transmission belt 340, the supporting member 320 is disposed on one side of the cutter tube adjusting sleeve 210, the cutter head adjusting sleeve 310 is disposed on the supporting member 320 and can move along the axial direction of the cutter tube 410 relative to the supporting member 320, and the cutter head adjusting sleeve 310 is configured to be disposed on the pulling member 430. The second transmission member 120 and the second driven wheel 330 are disposed at an interval, and the second transmission belt 340 sequentially spans the second transmission member 120 and the second driven wheel 330. The second driven wheel 330 is sleeved on the cutter head adjusting sleeve 310, the second driven wheel 330 can rotate synchronously with the cutter head adjusting sleeve 310, and the driving assembly is used for driving the second transmission member 120 to drive the second driven wheel 330 to rotate.

In use, the second transmission member 120 drives the second driven wheel 330 via the second transmission belt 340 to drive the tool bit adjusting sleeve 310 to rotate, so that the tool bit adjusting sleeve 310 drives the pulling member 430 to move relative to the supporting member 320, thereby realizing lateral bending of the tool bit 420 relative to the tool tube 410.

Further, the second linkage assembly 300 further includes a second steering wheel 350, the second steering wheel 350 is disposed between the second transmission member 120 and the second driven wheel 330, the second steering wheel 350, the second driven wheel 330 and the second transmission member 120 are located on a non-collinear line, and the second transmission belt 340 is spanned by the second transmission member 120 over the second steering wheel 350 and over the second driven wheel 330. The second steering wheel 350 is arranged to change the direction of the second transmission belt 340, so that the second transmission member 120 and the second driven wheel 330 are not limited in position by the arrangement of the second transmission belt 340. In other embodiments, the second steerable wheel 350 may also be omitted.

Specifically, the bit adjustment sleeve 310 is connected to the support member 320 by a screw thread; the second transmission member 120 drives the bit adjustment sleeve 310 to rotate through the second driven wheel 330 for the purpose of moving the bit adjustment sleeve 310 relative to the support member 320. Specifically, support 320 wears to locate in the one end of tool bit adjusting collar 310, just be provided with the external screw thread on the outer wall of support 320, be provided with the internal thread on the inner wall of tool bit adjusting collar 310 one end, the internal thread with the external screw thread cooperatees.

In one embodiment, one end of the tool bit adjusting sleeve 310 is connected to the supporting member 320 by a screw, the other end of the tool bit adjusting sleeve 310 is sleeved on the knife tube adjusting sleeve 210, and the tool bit adjusting sleeve 310 can move and rotate along the axial direction of the knife tube adjusting sleeve 210 relative to the knife tube adjusting sleeve 210. Because the knife tube adjusting sleeve 210 is arranged on the knife tube 410, and further, in the process that the knife head adjusting sleeve 310 rotates and moves relative to the supporting member 320, the knife tube adjusting sleeve 210 can provide a guiding function for the movement of the knife head adjusting sleeve 310, and it is ensured that the knife head adjusting sleeve 310 drives the pulling member 430 to move more stably.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Claims (12)

1. A drive mechanism, comprising: the switching component, the first transmission component, the second transmission component and the electric driving component are arranged on the base; wherein the content of the first and second substances,

the electric driving assembly is in driving connection with the switching assembly, the switching assembly is selectively connected with the first transmission piece or the second transmission piece, and then the electric driving assembly selectively drives the first transmission piece or the second transmission piece.

2. The drive mechanism as recited in claim 1, wherein the second transmission member is coaxial with and spaced from the first transmission member, and the switching assembly includes a switching wheel movable between the first transmission member and the second transmission member to selectively drivingly connect either the first transmission member or the second transmission member; the electric driving assembly is connected with the switching wheel to drive the switching wheel to rotate, and further drives the first transmission piece or the second transmission piece to rotate.

3. The drive mechanism according to claim 2, wherein the first transmission member is circumferentially formed with first engaging teeth, the second transmission member is circumferentially formed with second engaging teeth, and the switching wheel is circumferentially provided with engaging teeth;

when the switching wheel moves to the first transmission piece to enable the meshing teeth to be meshed with the first matching teeth, the electric driving assembly drives the first transmission piece to rotate through the switching wheel; when the switching wheel moves to the second transmission piece to enable the meshing teeth to be meshed with the second matching teeth, the electric driving component drives the second transmission piece to rotate through the switching wheel.

4. The drive mechanism according to claim 2, wherein the end surface of the first transmission member facing the second transmission member is formed with a first engaging tooth, and the end surface of the second transmission member facing the first transmission member is formed with a second engaging tooth;

the switching wheel is arranged between the first transmission piece and the second transmission piece and is coaxially arranged with the first transmission piece and the second transmission piece; the end face, facing the first transmission piece, of the switching wheel is provided with first meshing teeth, and the end face, facing the second transmission piece, of the switching wheel is provided with second meshing teeth;

when the switching wheel moves to the first transmission piece to enable the first meshing teeth to be meshed with the first matching teeth, the electric driving component drives the first transmission piece to rotate through the switching wheel; when the switching wheel moves to the second transmission piece to enable the second meshing teeth to be meshed with the second matching teeth, the electric driving component drives the second transmission piece to rotate through the switching wheel.

5. The drive mechanism as claimed in claim 3 or 4, wherein the switching assembly further comprises a toggle unit connected to the switching wheel for driving the switching wheel to move between the first transmission member and the second transmission member.

6. The driving mechanism according to claim 5, wherein the shifting unit includes a shifting fork and a moving member, a shifting fork fixing structure is disposed on an outer wall of the switching wheel, one end of the shifting fork is connected to the shifting fork fixing structure, the other end of the shifting fork is connected to the moving member, and the moving member is configured to drive the shifting fork to drive the switching wheel to move between the first transmission member and the second transmission member.

7. The drive mechanism as claimed in claim 6, wherein the fork fixing structure is a groove formed on an outer wall of the switching wheel, and one end of the fork is disposed in the groove;

or the shifting fork fixing structure is two bulges which are axially arranged on the outer wall of the switching wheel at intervals, a groove is formed in the space between the two bulges, and one end of the shifting fork is arranged in the groove.

8. The driving mechanism according to claim 6, wherein the moving member comprises an electromagnet, a connecting member and a return spring, the other end of the shifting fork is arranged on the connecting member, the connecting member is axially movable, and the axial moving direction of the connecting member is the same as the axial extending direction of the first transmission member and the second transmission member;

the electromagnet is arranged along the axial moving direction of the connecting piece and used for adsorbing the connecting piece, so that the shifting fork drives the switching wheel to move towards one direction of the first transmission piece and the second transmission piece;

the reset spring is sleeved on the connecting piece and used for applying axial movement reset force to the connecting piece when the connecting piece is not adsorbed by the electromagnet, so that the shifting fork drives the switching wheel to move towards the other direction of the first transmission piece and the second transmission piece.

9. The driving mechanism as claimed in claim 2, wherein the electric driving assembly includes a power shaft and a power source, the switching wheel has a power hole, one end of the power shaft is inserted into the power hole, the power shaft and the switching wheel are circumferentially fixed, the other end of the power shaft is connected to the power source, and the power source drives the power shaft to drive the switching wheel to rotate.

10. The driving mechanism according to claim 4, wherein the electric driving assembly includes a power shaft and a power source, the switching wheel has a power hole, the first transmission member has a first driving hole, the second transmission member has a second driving hole, the first driving hole and the second driving hole are both coaxial with the power hole, one end of the power shaft sequentially penetrates through the first driving hole, the power hole and the second driving hole, the power shaft and the switching wheel are circumferentially fixed and axially slide, and the power shaft, the first driving hole and the second driving hole are circumferentially slidable; the other end of the power shaft is connected with the power source, and the power source drives the power shaft to drive the switching wheel to rotate.

11. The drive mechanism as claimed in any one of claims 1 to 4, further comprising a first support seat and a second support seat, the first transmission member being coaxial with and spaced from the second transmission member; a first supporting shaft is formed on one side, back to the second transmission piece, of the first transmission piece, and the first supporting shaft is rotatably arranged on the first supporting seat; and a second supporting shaft is formed on one side, back to the first transmission piece, of the second transmission piece, and the second supporting shaft is rotatably arranged on the second supporting seat.

12. A medical device comprising a drive mechanism as claimed in any one of claims 1 to 11.

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