CN114886499A - Medical instrument and adjusting mechanism thereof - Google Patents

Abstract

The invention relates to a medical instrument and an adjusting mechanism thereof. The medical instrument comprises a medical cutter, a medical handle and an adjusting mechanism, wherein the adjusting mechanism comprises a cutter tube adjusting component, a cutter head adjusting component and an electric driving component, and the medical cutter comprises a cutter head, a cutter tube and a pulling part. When the bending angle of the cutter head needs to be adjusted, the electric driving component drives the cutter head adjusting sleeve to move along the axial direction of the cutter tube relative to the medical handle through the second transmission part, so that the cutter head adjusting sleeve drives the pulling part to move along the axial direction of the cutter tube, and the bending angle of the cutter head relative to the cutter tube is adjusted. The electric driving assembly drives the cutter pipe adjusting sleeve to rotate through the first transmission piece so as to realize synchronous rotation of the cutter pipe and realize adjustment of the cutter head in the direction around the axis of the cutter pipe. The electric driving assembly is controlled to drive the cutter head adjusting sleeve and the cutter tube adjusting sleeve to rotate, so that the adjustment of the angle of the cutter head can be controlled, the cutter head can be controlled more accurately, and the automatic control of medical instruments is facilitated.

Description

Medical devices and their adjustment mechanisms

technical field

The present invention relates to the technical field of medical devices, in particular to a medical device and its adjustment mechanism.

Background technique

For surgical knives in the field of surgery, such as spine, joint and other surgical operations, grinding knives are generally used to cut or grind bone tissue, especially in minimally invasive spine and joint minimally invasive operations. In the process of precision grinding operation, generally by setting a handle on the grinding tool, the doctor controls the handle to realize the control of the grinding tool. However, the traditional surgical tool relies on the doctor's manual operation ability, which is not conducive to the automatic control of the surgical tool.

SUMMARY OF THE INVENTION

Based on this, it is necessary to provide a medical instrument and its adjustment mechanism that are conducive to automatic control in order to address the above problems.

An adjusting mechanism for a medical instrument, the adjusting mechanism is arranged on a medical handle and is used to adjust the circumferential rotation of the knife tube of the medical knife and the relative relation of the knife head of the medical knife to the medical knife after the medical handle is connected to the medical knife. The knife tube is bent, and the adjustment mechanism includes a knife tube adjustment assembly, a knife head adjustment assembly and an electric drive assembly, the knife tube adjustment assembly includes a knife tube adjustment sleeve and a first transmission member, and the knife tube adjustment sleeve is used in the The medical handle is sleeved on the knife tube after being connected to the medical knife, and the first transmission member is connected to the knife tube adjusting sleeve for transmission; the knife head adjusting assembly includes a knife head adjusting sleeve and a second transmission The knife head adjusting sleeve is used to indirectly connect the knife head after the medical handle is connected to the medical knife, and the knife head adjusting sleeve can move axially along the knife tube relative to the medical handle, The second transmission member is connected with the cutter head adjusting sleeve in a driving manner; the electric drive assembly is used to drive the knife tube adjusting sleeve to rotate through the first transmission member, so as to drive the knife tube around the axis of the knife tube and for driving the cutter head adjusting sleeve to move axially through the second transmission member, so as to drive the cutter head to bend relative to the cutter tube.

In one embodiment, the electric drive assembly includes a switching member and a power source, the switching member is connected to the power source, and the switching member is selectively connected to the first transmission member or the second transmission member , so that the power source can selectively drive the knife barrel adjusting assembly or the knife head adjusting assembly.

In one embodiment, the first transmission member includes a first driving wheel and a first driven wheel, the electric drive assembly is drivingly connected to the first driving wheel, and the first driving wheel is drivingly connected to the first driving wheel A driven wheel, the first driven wheel is synchronously rotated and connected to the knife tube adjusting sleeve;

The second transmission member includes a second driving wheel and a second driven wheel, the electric drive assembly is drivingly connected to the second driving wheel, the second driving wheel is drivingly connected to the second driven wheel, and the second driving wheel is drivingly connected to the second driving wheel. The driven wheel is drivingly connected to the cutter head adjusting sleeve, so as to realize the axial movement of the cutter head adjusting sleeve.

In one embodiment, the switching member includes a switching wheel, the power source is connected to and drives the switching wheel to rotate, and the first driving wheel, the switching wheel, and the second driving wheel are coaxially spaced in sequence. It is arranged that the switching wheel can move between the first driving wheel and the second driving wheel, and when the switching wheel moves to connect with the first driving wheel, the first driving wheel is driven to rotate, When the switching wheel moves to connect with the second driving wheel, the second driving wheel is driven to rotate.

In one embodiment, first matching teeth are formed on the end surface of the first driving wheel facing the switching wheel, and second matching teeth are formed on the end surface of the second driving wheel facing the switching wheel; The end surface of the switching wheel facing the first driving wheel is provided with first meshing teeth, and the end surface of the switching wheel facing the second driving wheel is provided with second meshing teeth, when the switching wheel moves to the first driving wheel. When a driving wheel is used, the first meshing teeth mesh with the first matching teeth, and when the switching wheel moves to the second driving wheel, the second meshing teeth mesh with the second matching teeth.

In one embodiment, the switching member further includes a moving source, and the moving source drives the switching wheel to move between the first driving wheel and the second driving wheel.

In one embodiment, the first transmission member further includes a first transmission belt and a first steering wheel, the first steering wheel is disposed between the first driving wheel and the first driven wheel, and the The first steering wheel, the first driven wheel and the first driving wheel are located on non-identical straight lines, and the first transmission belt is sequentially arranged across the first driving wheel, the first steering wheel and the first driving wheel. the first driven wheel;

The second transmission member further includes a second transmission belt and a second steering wheel, the second steering wheel is arranged between the second driving wheel and the second driven wheel, and the second steering wheel, the The second driven wheel and the second driving wheel are located on different straight lines, and the second transmission belt is arranged across the second driving wheel, the second steering wheel and the second driven wheel in sequence.

In one embodiment, the first driving wheel and the first driven wheel are driven by gear meshing, or the first driving wheel and the first driven wheel are in a gear structure, and the first driving wheel and the The first driven wheel is in mesh; and/or the second driving wheel and the second driven wheel are driven by gear meshing; or the second driving wheel and the second driven wheel are in a gear structure, and the first The two driving wheels mesh with the second driven wheel.

In one embodiment, the adjustment mechanism of the medical device further includes a mounting assembly, the mounting assembly includes a driven housing and a mounting piece, the driven housing is arranged on the mounting piece, and the first driven housing is provided on the mounting piece. Both the driven wheel and the second driven wheel are rotatably arranged in the driven housing, and the first driving wheel, the second driving wheel and the electric drive assembly are all arranged on the mounting member.

In one embodiment, the switching member is a switching switch, and the switching switch selectively communicates the transmission path between the power source and the first transmission member or between the power source and the second transmission member transmission path between.

In one embodiment, the cutter head adjusting assembly further includes a support member, the support member is fixedly arranged on the medical handle, the cutter head adjusting sleeve is connected with the support member through a thread, and the electric motor The driving assembly is used for driving the cutter head adjusting sleeve to rotate relative to the support member, so as to make the cutter head adjusting sleeve move axially relative to the support member.

A medical instrument includes a medical knife and a medical handle, the medical instrument further includes the above-mentioned adjustment mechanism for the medical instrument; the medical knife includes a knife tube, a knife head and a pulling member, and the pulling member is worn through the In the knife tube, one end of the pulling piece is connected to the cutter head, and the other end of the pulling piece is connected to the cutter head adjusting sleeve, and the axial movement of the cutter head adjusting sleeve drives the axial movement of the pulling piece, so as to drive the The cutter head is bent relative to the cutter tube; the cutter tube adjustment sleeve is sleeved on the cutter tube to drive the cutter tube to rotate in the circumferential direction.

In the above-mentioned medical instrument and its adjustment mechanism, when the bending angle of the knife head relative to the knife tube needs to be adjusted, the electric drive assembly drives the knife head adjustment sleeve to move along the axis direction of the knife tube relative to the medical handle through the second transmission member, The cutter head adjusting sleeve drives the pulling member to move along the axis direction of the cutter tube, and the bending angle of the cutter head relative to the cutter tube can be adjusted by adjusting the distance that the pulling member moves along the axis direction of the cutter tube in the cutter tube. Further, the adjusting sleeve of the knife tube can be driven by the electric drive assembly to rotate through the first transmission member to realize the synchronous rotation of the knife tube; the rotation of the knife tube can further drive the bent knife head to rotate around the axis of the knife tube, so as to realize the rotation of the knife head around the axis of the knife tube. Adjustment of the axis direction of the knife tube. By controlling the electric drive assembly to drive the cutter head adjusting sleeve and the knife tube adjusting sleeve to rotate, the adjustment of the bending angle of the cutter head can be controlled, which facilitates more precise control of the bending of the cutter head, and is conducive to the automatic control of medical instruments.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Furthermore, the figures are not drawn to a 1:1 scale and the relative dimensions of the various elements are drawn in the figures by way of example only and not necessarily to true scale. In the attached image:

1 is a schematic structural diagram of a medical device in an embodiment;

Fig. 2 is the partial structure schematic diagram of the medical instrument shown in Fig. 1;

3 is a cross-sectional view of a medical device;

Fig. 4 is the enlarged view of A place in Fig. 3;

Fig. 5 is the structural representation of the switching wheel in Fig. 4;

Fig. 6 is the partial structure schematic diagram of the drive assembly in Fig. 4;

7 is a schematic structural diagram of the first driving wheel and the first support frame in FIG. 3;

FIG. 8 is a cross-sectional view of the first driving wheel and the first support frame shown in FIG. 7;

Fig. 9 is the enlarged view of B place in Fig. 3;

Fig. 10 is a partial cross-sectional view of the knife barrel adjusting sleeve and the knife head adjusting sleeve in Fig. 9;

Fig. 11 is the structural representation of the cutter head adjusting sleeve in Fig. 9;

Figure 12 is a cross-sectional view of the cutter head adjusting sleeve shown in Figure 11;

Fig. 13 is the structural representation of the knife tube adjustment sleeve in Fig. 9;

Fig. 14 is the structural schematic diagram of the driven housing and the mounting seat in Fig. 3;

Description of reference numbers:

10. Medical instruments; 100, Medical knives; 110, Knife tube; 120, Knife head; 130, Pulling piece; 200, Knife tube adjustment assembly; 210, Knife tube adjustment sleeve; 212, Installation slot; 220, First slave 230, the first driving wheel; 232, the first matching tooth; 234, the first driving hole; 240, the first transmission belt; 250, the first steering wheel; 300, the cutting head adjusting assembly; 310, the cutting head adjusting sleeve; 312, matching tooth slot; 314, rotating groove; 320, supporting piece; 330, second driven wheel; 340, second driving wheel; 342, second matching tooth; 344, second driving hole; 350, second transmission belt 360, second steering wheel; 370, push sleeve; 372, fixed part; 374, rotating part; 400, drive assembly; 410, power source; 412, power shaft; 420, switching wheel; 422, annular groove; 424 426, the second meshing tooth; 428, the power hole; 430, the fork; 440, the moving source; 442, the electromagnet; 444, the connecting piece; 446, the reset piece; 520, a mounting member; 530, a mounting seat; 540, a first support frame; 550, a second support frame; 600, a control member; 700, an adjustment handle.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be 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. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

1 to 3 , a medical instrument 10 in an embodiment of the present invention includes a medical knife 100, a medical handle 700 and an adjusting mechanism. The medical knife 100 is connected to the medical handle 700, and the adjusting mechanism can be provided on the medical handle. Specifically, the medical knife 100 includes a knife tube 110, a knife head 120 and a pulling member 130, the pulling member 130 is penetrated in the knife tube 110, and one end of the pulling member 130 is connected to the knife head 120. The adjusting mechanism is used to adjust the circumferential rotation of the knife barrel of the medical knife 100 and the bending of the knife head of the medical knife relative to the knife barrel after the medical handle 700 is connected to the medical knife 100, so as to facilitate the use of the doctor.

Further, the front end of the knife tube 110 is connected with the knife head 120 , and the rotation of the knife tube 110 drives the knife head 120 to rotate along the axis of the knife tube 110 . One end of the pulling member 130 is hinged with the cutter head 120 , and the pulling member 130 can move in the cutter tube 110 along the axis direction of the cutter tube 110 , so that the cutter head 120 can be relative to the cutter head 120 . The axis of the knife tube 110 is bent.

In one embodiment, the adjustment mechanism includes a knife barrel adjustment assembly 200, a knife head adjustment assembly 300 and an electric drive assembly 400. The knife barrel adjustment assembly 200 includes a knife barrel adjustment sleeve 210 and a first transmission member. The adjusting sleeve 210 is used to be sleeved on the knife tube 110 after the medical handle 700 is connected to the medical knife 100 . It can drive the knife tube 110 to rotate in the circumferential direction; the knife head adjustment assembly 300 includes a knife head adjustment sleeve 310 and a second transmission member, and the knife head adjustment sleeve 310 is used for connecting the medical handle 700 to the medical The cutter 100 is indirectly connected to the cutter head 120 , and the cutter head adjusting sleeve 310 can move in the axial direction of the cutter tube 110 relative to the medical handle 700 . The second transmission member and the cutter head adjusting sleeve 310 drive connection. The other end of the pulling member 130 is connected to the cutter head adjusting sleeve 310 . The axial movement of the cutter head adjusting sleeve 310 drives the pulling member 130 to move axially, so as to drive the cutter head 120 relative to the cutter tube 110 . Bend. The electric drive assembly 400 is used to drive the knife tube adjusting sleeve 210 to rotate through the first transmission member, so as to drive the knife tube 110 to rotate around the axis of the knife tube 110; and is used to drive the knife tube 110 to rotate through the second transmission member The cutter head adjusting sleeve 310 is driven to move axially, so as to drive the cutter head 120 to bend relative to the cutter tube 110 .

The above-mentioned medical instrument 10 and its adjustment mechanism, when the bending angle of the knife head 120 relative to the knife tube 110 needs to be adjusted, the electric drive assembly 400 drives the knife head adjusting sleeve 310 relative to the medical handle along the knife tube through the second transmission member. 110 moves in the axial direction, so that the knife head adjusting sleeve 310 drives the pulling member 130 to move along the axial direction of the knife tube 110. Adjust the bending angle of the cutter head 120 relative to the cutter tube 110 . Further, the knife tube adjusting sleeve 210 may be driven to rotate by the electric drive assembly 400 through the first transmission member, so as to realize the synchronous rotation of the knife tube 110 . The cutter tube 110 is used to further drive the bent cutter head 120 to rotate around the axis of the cutter tube 110 , so as to realize the adjustment of the cutter head 120 around the axis of the cutter tube 110 . By controlling the electric drive assembly 400 to drive the cutter head adjusting sleeve 310 and the knife tube adjusting sleeve 210 to rotate, the adjustment of the angle of the cutter head 120 can be controlled, which facilitates more precise control of the bending of the cutter head 120 and facilitates the automatic control of the medical instrument 10 .

In one embodiment, the electric drive assembly 400 can be one, which can drive both the first transmission member and the second transmission member. In another embodiment, there may also be two electric drive assemblies 400 for respectively driving the first transmission member and the second transmission member.

In one embodiment, the first transmission member of the knife tube adjusting assembly 200 includes a first driven wheel 220 and a first driving wheel 230, the first driving wheel 230 is drivingly connected to the first driven wheel 220, and the The first driven wheel 220 is synchronously rotatably connected to the knife tube adjusting sleeve 210 , and the electric drive assembly 400 is drivingly connected to the first driving wheel 230 . The rotation of the first driven wheel 220 is realized by driving the first driving wheel 230 to rotate by the electric driving assembly 400 .

Specifically, the first transmission member of the knife tube adjustment assembly 200 further includes a first transmission belt 240, the first driving wheel 230 and the first driven wheel 220 are arranged at intervals, and the first transmission belt 240 is arranged across the on the first driving wheel 230 and the first driven wheel 220 . Since the first transmission belt 240 has the flexibility to move, it can ensure the safety in the transmission process and prevent the knife tube 110 from being stuck during the rotation of the first driven wheel 220 . In other embodiments, the first transmission belt 240 may also be omitted, and the first driven wheel 220 and the first driving wheel 230 are gear transmission structures.

Further, the first transmission member of the knife tube adjustment assembly 200 further includes a first steering wheel 250, and the first steering wheel 250 is disposed between the first driving wheel 230 and the first driven wheel 220, And the first steering wheel 250 , the first driven wheel 220 and the first driving wheel 230 are located on different straight lines, and the first transmission belt 240 spans the first driving wheel 230 , The first steering wheel 250 and the first driven wheel 220 . By disposing the first steering wheel 250 , it is convenient to change the transmission direction of the first transmission belt 240 , so that the first driving pulley 230 and the first driven pulley 220 are not limited in position due to the arrangement of the first transmission belt 240 . In other embodiments, the first steering wheel 250 may also be omitted.

In other embodiments, the first driving wheel 230 and the first driven wheel 220 are geared for transmission. Alternatively, the first driving wheel 230 and the first driven wheel 220 are gear structures, and the first driving wheel 230 is meshed with the first driven wheel 220 .

In another embodiment, the first transmission member of the knife tube adjustment assembly 200 may further include a gear transmission set, the final gear of the gear transmission set rotates synchronously with the knife tube adjustment sleeve 210, and the electric drive assembly 400 is used to drive the start end gear to rotate to rotate The knife tube adjusting sleeve 210 is driven to rotate synchronously by the end gear. Specifically, the end gear can be sleeved on the knife tube adjustment sleeve 210 , or meshing teeth are provided on the outer wall of the knife tube adjustment sleeve 210 , and the end gear is engaged with the knife tube adjustment sleeve 210 .

In one embodiment, the second transmission member of the cutter head adjusting assembly 300 includes a second driven wheel 330 and a second driving wheel 340, the second driving wheel 340 is drivingly connected to the second driven wheel 330, and all the The second driven wheel 330 is drivingly connected to the cutter head adjusting sleeve 310 , and the electric drive assembly 400 is drivingly connected to the second driving wheel 340 . The rotation of the second driven wheel 330 is realized by driving the second driving wheel 340 to rotate by the electric driving assembly 400 .

Specifically, the second transmission member of the cutter head adjusting assembly 300 further includes a second transmission belt 350, the second driving wheel 340 and the second driven wheel 330 are spaced apart, and the second transmission belt 350 is arranged across the on the second driving wheel 340 and the second driven wheel 330 . Since the second transmission belt 350 has the flexibility to move, it can ensure the safety during the transmission process and prevent the second driven wheel 330 from being stuck during the rotation process. In other embodiments, the second transmission belt 350 may also be omitted, and the second driven wheel 330 and the second driving wheel 340 are gear transmission structures.

Further, the second transmission member of the cutter head adjusting assembly 300 further includes a second steering wheel 360, and the second steering wheel 360 is disposed between the second driving wheel 340 and the second driven wheel 330, Moreover, the second steering wheel 360 , the second driven wheel 330 and the second driving wheel 340 are located on different straight lines, and the second transmission belt 350 is arranged across the second driving wheel 340 , The second steering wheel 360 and the second driven wheel 330 . By setting the second steering wheel 360, it is convenient to change the driving direction of the second transmission belt 350, so that the second driving wheel 340 and the second driven wheel 330 will not be limited by the positioning of the second transmission belt 350. In other embodiments, the second steering wheel 360 may also be omitted.

In other embodiments, the second driving wheel 340 and the second driven wheel 330 are geared for transmission. Alternatively, the second driving wheel 340 and the second driven wheel 330 are gear structures, and the second driving wheel 340 is meshed with the second driven wheel 330 .

In another embodiment, the second transmission member of the cutter head adjusting assembly 300 may further include a gear transmission group, the final gear of the gear transmission group is drivingly connected with the cutter head adjusting sleeve 310, and the electric driving assembly 400 is used for driving the starting gear to rotate to rotate. The cutter head adjusting sleeve 310 is driven to move axially by the final gear. Specifically, the end gear can be sleeved on the knife tube adjustment sleeve 210, or the outer wall of the knife tube adjustment sleeve 210 is provided with meshing teeth, the end gear is meshed with the knife tube adjustment sleeve 210, and the cutter head adjustment sleeve 310 can be relatively Move on the axis of the knife tube 110 .

In one embodiment, the first driven wheel 220 and the second driven wheel 330 are coaxially disposed; that is, the cutter head adjusting sleeve 310 and the knife barrel adjusting sleeve 210 are disposed coaxially. Since the pulling member 130 is disposed in the knife tube 110 , it is convenient to drive the pulling member 130 and the knife tube 110 respectively through the coaxially disposed cutter head adjusting sleeve 310 and the knife tube adjusting sleeve 210 .

In this embodiment, the first driving wheel 230 and the second driving wheel 340 are arranged coaxially and spaced apart. By arranging the first steering wheel 250 and the second steering wheel 360, it is convenient to realize the coaxial arrangement of the first driving wheel 230 and the second driving wheel 340, the coaxial arrangement of the first driven wheel 220 and the second driven wheel 330, and the coaxial arrangement of the first driving wheel 230 and the second driving wheel 330. A driving wheel 230 is not coaxial with the first driven wheel 220 .

Referring to FIG. 4 together, in one embodiment, the electric drive assembly 400 includes a power source 410 and a switching member, the switching member is connected to the power source 410 , and the switching member is selectively connected to the first The transmission member or the second transmission member enables the power source 410 to selectively drive the knife tube adjusting assembly 200 or the knife head adjusting assembly 300 . A power source 410 can be used to drive the knife barrel adjusting assembly 200 or the knife head adjusting assembly 300 respectively through the switching element.

Specifically, the switching member includes a switching wheel 420, and the power source 410 is connected to and drives the switching wheel 420 to rotate. The first driving wheel 230 , the switching wheel 420 and the second driving wheel 340 are coaxially spaced in turn, and the switching wheel 420 can move between the first driving wheel 230 and the second driving wheel 340 ; When the switching wheel 420 moves to connect with the first driving wheel 230, it can drive the first driving wheel 230 to rotate, and when the switching wheel 420 moves to connect with the second driving wheel 340, it can drive The second driving wheel 340 rotates.

Since the power source 410 drives the switching wheel 420 to rotate, when the switching wheel 420 is connected to the first driving wheel 230 , the rotation of the switching wheel 420 can be transmitted to the first driving wheel 230 to realize the rotation adjustment of the knife tube 110 . When the switching wheel 420 is connected with the second driving wheel 340 , the rotation of the switching wheel 420 can be transmitted to the second driving wheel 340 to adjust the bending angle of the cutter head 120 relative to the cutter tube 110 .

In another embodiment, the switching member is a switching switch, and the switching switch selectively communicates the transmission path between the power source and the first transmission member or the connection between the power source and the second transmission member transmission path between. The switch may be a circuit structure, and the switch is used to control the power source to be energized to control the first transmission member or to control the power source to be energized to control the second transmission member.

In this embodiment, the power source 410 is a micro-motor, and the switching wheel 420 is driven to rotate by the micro-motor. In other embodiments, the power source 410 may be other components capable of driving the switching wheel 420 to rotate.

Referring to FIGS. 4 to 6 , in one embodiment, the switching member further includes a shifting fork 430 for driving the switching wheel 420 between the first driving wheel 230 and the second driving wheel 340 , so that the switching wheel 420 is connected with the first driving wheel 230 or with the second driving wheel 340 .

Specifically, an annular groove 422 around the axis of the switching wheel 420 is formed on the outer wall of the switching wheel 420 , and the shifting fork 430 is disposed in the annular groove 422 . The annular groove 422 ensures the stability of the movement of the shifting fork 430 to shift the switching wheel 420.

In another embodiment, the number of the shifting forks 430 is at least two, and each of the shifting forks 430 is respectively disposed in the annular groove 422 around the axis of the switching wheel 420 . By arranging at least two forks 430 to move the switching wheel 420 at the same time, it is possible to ensure the stability of the switching wheel 420 during the movement and avoid shaking during the movement. In other embodiments, the number of shift forks 430 may also be one.

In one embodiment, the switching member further includes a moving source 440 for driving the switching wheel 420 to move between the first driving wheel 230 and the second driving wheel 340 . Specifically, the moving source 440 is used to drive the shifting fork 430 to drive the switching wheel 420 to move between the first driving wheel 230 and the second driving wheel 340 . By setting the movement source 440, the purpose of automatically controlling the movement of the switching wheel 420 is facilitated.

Specifically, the moving source 440 includes an electromagnet 442 , a connecting piece 444 and a reset piece 446 . One end of the shifting fork 430 is set on the connecting piece 444 , and the other end is set in the annular groove 422 . The electromagnet 442 is used for adsorbing the connecting piece 444 along the direction of the first driving wheel 230 toward the second driving wheel 340 , and the reset piece 446 is used for applying the second driving force to the connecting piece 444 . The restoring force of the wheel 340 in the direction of the first driving wheel 230 . When the switching wheel 420 needs to be connected with the second driving wheel 340, the electromagnet 442 is energized to attract the connecting piece 444 to drive the fork 430 to push the switching wheel 420 to move in the direction of the second driving wheel 340, so as to transmit power to the second driving wheel 340. When the switching wheel 420 needs to cooperate with the first driving wheel 230, the electromagnet 442 is powered off, and the reset member 446 drives the shifting fork 430 to reset through the connecting member 444, so that the switching wheel 420 moves in the direction of the first driving wheel 230 to realize transmission Power is supplied to the first driving wheel 230 .

In another embodiment, the electromagnet 442 is used for adsorbing the connecting member 444 along the direction of the second driving wheel 340 toward the first driving wheel 230 , and the restoring member 446 is used for attaching the connecting member to the connecting member 446 . 444 Apply the restoring force of the first driving wheel 230 toward the direction of the second driving wheel 340 .

In this embodiment, the reset member 446 is a spring, the connecting member 444 is a shaft-like structure, the shift fork 430 is disposed at one end of the connecting member 444, the spring is sleeved on the connecting member 444, and the electromagnet 442 is located at one end of the connecting member 444. On one side of the connecting member 444 in the axial direction, the elastic force applied by the spring to the connecting member 444 is opposite to the direction of the adsorption force applied to the connecting member 444 after the electromagnet 442 is energized. In other embodiments, the restoring member 446 may also be a rubber band or other structure capable of realizing the restoring of the connecting member 444 . The connecting member 444 may be a structure capable of realizing other shapes of the connecting fork 430 .

In other embodiments, the electromagnet 442 can also be replaced with other components that can drive the connecting piece 444 to move, such as relays, hydraulic components, and electric push rods.

Referring to FIG. 4 , FIG. 5 and FIG. 7 , in one embodiment, a first matching tooth 232 is formed on the end surface of the first driving wheel 230 facing the switching wheel 420 , and the second driving wheel 340 is facing the switching wheel 420 . The end surface of the wheel 420 is formed with a second mating tooth 342 ; the end surface of the switching wheel 420 facing the first driving wheel 230 is provided with a first meshing tooth 424 , and the switching wheel 420 is facing the second driving wheel 340 . A second meshing tooth 426 is provided on the end face. When the switching wheel 420 moves to the first driving wheel 230 , the first meshing teeth 424 mesh with the first matching teeth 232 , and when the switching wheel 420 moves to the second driving wheel 340 , the The second engaging teeth 426 are engaged with the second engaging teeth 342 .

When the switching wheel 420 moves toward the first driving wheel 230 , the first meshing teeth 424 gradually approach the first matching teeth 232 and mesh. There is no need to meet other alignment requirements during the meshing process, and the switching is smoother and the switching is stable. better. Similarly, the switching wheel 420 moves in the direction toward the second driving wheel 340 , so that the second meshing teeth 426 mesh with the second matching teeth 342 , the switching is smoother and the switching stability is better.

Specifically, the first meshing teeth 424 include a plurality of teeth, and the respective teeth of the first meshing teeth 424 are arranged around the axis of the switching wheel 420 , and the first engaging teeth 232 are engaged with the first Teeth 424 are adapted.

Specifically, the second meshing teeth 426 include a plurality of teeth, and the respective teeth of the second meshing teeth 426 are arranged around the axis of the switching wheel 420 , and the second engaging teeth 342 are engaged with the second meshing teeth 420 . Teeth 426 are adapted.

In this embodiment, a power hole 428 is formed on the switching wheel 420 , and the power shaft 412 of the power source 410 is penetrated in the power hole 428 , and the power source 410 is used to drive the power shaft 412 to drive the The switching wheel 420 rotates. By arranging the power shaft 412, the power source 410 can effectively drive the switching wheel 420 to rotate.

Referring to FIG. 4 and FIG. 8 together, in one embodiment, the first driving wheel 230 is provided with a first driving hole 234 , the first driving hole 234 and the power hole 428 are coaxially disposed, and the power shaft 412 One end of the first driving hole 234 is inserted through the first driving hole 234 , and the first driving wheel 230 can rotate relative to the power shaft 412 . By passing the first driving wheel 230 on the power shaft 412 , the positions of the first driving wheel 230 and the switching wheel 420 are effectively restricted, so as to ensure the stability during meshing.

Specifically, the second driving wheel 340 is provided with a second driving hole 344 , the first driving hole 234 and the second driving hole 344 are both coaxial with the power hole 428 , and the power shaft 412 The opposite ends of the two are respectively penetrated in the first driving hole 234 and the second driving hole 344 , and the second driving wheel 340 can rotate relative to the power shaft 412 . By passing the second driving wheel 340 on the power shaft 412 , the relative position of the second driving wheel 340 and the switching wheel 420 is further restricted, and the stability of the meshing between the switching wheel 420 and the second driving wheel 340 is ensured.

Referring to FIGS. 9 and 10 , in one embodiment, the cutter head adjusting sleeve 310 further includes a support member 320 , the support member 320 is fixedly disposed on the medical handle 700 , and the cutter head adjusting sleeve 310 is disposed on the The support member 320 can move relative to the support member 320 along the axis direction of the knife tube 110 . Specifically, the cutter head adjusting sleeve 310 is connected with the support member 320 through threaded fitting, and the electric drive assembly 400 is used to drive the cutter head adjusting sleeve 310 to rotate, so that the cutter head adjusting sleeve 310 is relative to the supporting member Axial movement is possible.

Further, the support member 320 is passed through one end of the cutter head adjusting sleeve 310 , and an outer thread is provided on the outer wall of the support member 320 , and an inner wall is provided on the inner wall of one end of the cutter head adjusting sleeve 310 . A thread, the inner thread is matched with the outer thread. In other embodiments, the cutter head adjusting sleeve 310 may be a gear, and the support member 320 may be a rack, as long as the cutter head adjusting sleeve 310 can move relative to the support member 320 during the rotation of the cutter head adjusting sleeve 310 .

In one embodiment, one end of the cutter head adjusting sleeve 310 is connected to the support member 320 through a thread, and the other end of the cutter head adjusting sleeve 310 is sleeved on the cutter tube adjusting sleeve 210, and the The knife head adjusting sleeve 310 can move and rotate relative to the knife barrel adjusting sleeve 210 along the axis direction of the knife barrel adjusting sleeve 210 . Since the knife barrel adjusting sleeve 210 is disposed on the knife barrel 110, and the knife adjusting sleeve 310 rotates and moves relative to the support member 320, the knife adjusting sleeve 210 can provide a guiding function for the movement of the knife adjusting sleeve 310. It is ensured that the cutter head adjusting sleeve 310 drives the pulling member 130 to move more stably.

As shown in FIG. 11 and FIG. 12 , in an embodiment, one of the outer wall of the cutter head adjusting sleeve 310 and the inner wall of the second driven wheel 330 are provided with matching protruding teeth, and the other There is a matching tooth slot 312 on it, and the matching protruding teeth can pass through the matching tooth slot 312; wherein, the matching tooth slot 312 is a strip-shaped slot, and the length direction of the strip-shaped slot is the The knife tube adjusts the axial direction of the sleeve 210 . Through the cooperation between the mating tooth grooves 312 and the mating protruding teeth, not only can the second driven wheel 330 drive the cutter head adjusting sleeve 310 to rotate, but also the cutter head adjusting sleeve 310 will not be restricted from moving relative to the second driven wheel 330 .

In this embodiment, there are a plurality of the mating tooth slots 312 , the plurality of the mating tooth slots 312 are arranged at intervals around the axial direction of the cutter head adjusting sleeve 310 , and the mating protruding teeth are arranged on the second driven wheel 330 On the inner wall of , the number of the mating protruding teeth matches the number of the mating tooth slots 312 , and each of the mating protruding teeth can correspondingly pass through one of the mating tooth slots 312 . Through the cooperation of the plurality of mating tooth slots 312 and the mating protruding teeth, the stability of the rotation of the cutter head adjusting sleeve 310 driven by the second driven wheel 330 is improved. In another embodiment, the number of the mating protruding teeth may also be less than the number of the mating tooth slots 312 , for example, the number of mating protruding teeth may be one, two, or other numbers.

Referring to FIG. 9 and FIG. 12 , in one embodiment, a pusher sleeve 370 is provided in the cutter head adjusting sleeve 310 , and the pusher sleeve 370 includes a fixed portion 372 and a rotating portion 374 connected to the fixed portion 372 , the fixed portion 372 . The portion 372 is used to be fixed on the pulling member 130 , a rotating groove 314 is formed on the inner wall of the cutting head adjusting sleeve 310 , and the rotating groove 314 is an annular recess around the moving direction of the cutting head adjusting sleeve 310 . The rotating portion 374 is disposed in the rotating groove 314 and can rotate relative to the cutting head adjusting sleeve 310 in the rotating groove 314 around the moving direction of the cutting head adjusting sleeve 310 . When the cutter head adjusting sleeve 310 rotates, the push sleeve 370 does not need to rotate synchronously with the cutter head adjusting sleeve 310, but uses the limiting relationship between the rotating groove 314 and the rotating part 374 along the moving direction, so that the push sleeve 370 can follow the cutter head The head adjusting sleeve 310 moves synchronously, thereby realizing the purpose of driving the pulling member 130 to move.

In this embodiment, the fixed part 372 is a cylinder, the rotating part 374 is a ring, the rotating part 374 is sleeved on the outer wall of the fixed part 372 and is located in the rotating groove 314, and the pulling member 130 is passed through and fixed on the inside the cylinder. In other embodiments, the fixing portion 372 may also be other structures capable of being fixed on the pulling member 130 . The rotating portion 374 may be of other structures, as long as the rotating portion 374 can be guaranteed to rotate in the rotating groove 314 .

Referring to FIG. 9 and FIG. 13 , in an embodiment, the outer wall of the knife tube adjusting sleeve 210 and the inner wall of the first driven wheel 220 are provided with mounting protruding teeth on one of them, and the other is provided on the other. There are installation tooth slots 212 , and the installation protruding teeth can pass through the installation tooth slots 212 . Through the mutual cooperation of the installation protruding teeth and the installation tooth grooves 212, it can be effectively ensured that the first driven wheel 220 drives the knife tube adjusting sleeve 210 to rotate synchronously.

Specifically, the knife tube adjusting sleeve 210 is a cylindrical structure, the installation tooth slot 212 is a strip-shaped groove, and the length direction of the strip-shaped groove and the axial direction of the knife tube adjusting sleeve 210 are both as described above. The direction of the rotation axis of the first driven wheel 220 . By arranging the installation tooth slot 212 in the strip-shaped groove structure, it is convenient for the driven wheel to be sleeved on the knife tube adjusting sleeve 210 from one end of the knife tube adjusting sleeve 210 , which facilitates the installation of the driven wheel.

In one embodiment, there are a plurality of the installation tooth slots 212 , the plurality of the installation tooth slots 212 are arranged at intervals around the axial direction of the knife tube adjusting sleeve 210 , and the number of the installation protruding teeth is the same as the installation tooth slot. The number of 212 is matched, and each of the installation protruding teeth can be correspondingly inserted into one of the installation tooth slots 212 . Through the cooperation of the plurality of installation tooth slots 212 and the installation convex teeth, the stability of the rotation of the knife tube adjusting sleeve 210 driven by the first driven wheel 220 is improved. In another embodiment, the number of mounting protruding teeth may also be less than the number of mounting tooth slots 212 , for example, the number of mounting protruding teeth may be one, two, or other numbers.

Referring to FIGS. 2 , 4 and 14 , in one embodiment, the adjustment mechanism further includes a mounting assembly 500 , and the mounting assembly 500 includes a driven housing 510 and a mounting piece 520 , and the driven housing 510 is disposed on the mounting piece 520, the first driven wheel 220 and the second driven wheel 330 can be rotatably disposed in the driven housing 510, the first driving wheel 230, the second driving wheel 340 and the electric drive The components 400 are all disposed on the mounting member 520 . The driven housing 510 can not only facilitate the arrangement of the first driving wheel 230 and the second driving wheel 340 , but also protect the first driving wheel 230 and the second driving wheel 340 . The driven housing 510 can also limit the movement of the first driving wheel 230 and the second driving wheel 340 , which ensures the stability of the movement of the cutter head adjusting sleeve 310 relative to the second driven wheel 330 .

In one embodiment, the mounting assembly 500 further includes a mounting seat 530 , the mounting seat 530 is disposed on the mounting member 520 , and both the first steering wheel 250 and the second steering wheel 360 are rotatably disposed on the mounting seat 530 . In this embodiment, the mounting seat 530 is arranged on the driven housing 510, and the mounting seat 530 is arranged on the mounting member 520 through the driven housing 510. Specifically, the mounting seat 530 is integrally formed on the driven housing 510 . In other embodiments, the mounting seat 530 may also be separately provided on the mounting member 520 .

In one embodiment, the mounting assembly 500 further includes a first support frame 540 and a second support frame 550 , the first support frame 540 and the second support frame 550 are disposed on the mounting member 520 at intervals, and the first driving wheel 230 The second driving wheel 340 is rotatably arranged on the second supporting frame 550 . The first support frame 540 is used to support the first driving wheel 230 to ensure the rotation of the first driving wheel 230;

Referring to FIG. 1 and FIG. 2 , in one embodiment, the adjustment mechanism further includes a controller and a manipulation member 600 , the power source 410 and the movement source 440 are both electrically connected to the controller, and the manipulation member 600 is used for The operation of the power source 410 and the movement source 440 is controlled by the controller. For example, when it is necessary to adjust the bending of the knife head 120 relative to the knife tube 110 , the moving source 440 is controlled by the manipulation member 600 to drive the shifting fork 430 to drive the switching wheel 420 to move and is connected to the second driving wheel 340 , and the power source 410 passes through the switching wheel 420 . The power is transmitted to the second driving wheel 340 , and the second driving wheel 340 drives the cutter head adjusting sleeve 310 to rotate through the second driven wheel 330 , so that the cutter head adjusting sleeve 310 drives the pulling member 130 to move in the cutter tube 110 relative to the supporting member 320 , so as to realize the bending of the cutter head 120 relative to the cutter tube 110 . When the setting direction of the cutter head 120 needs to be changed, the moving source 440 is controlled by the manipulation member 600 to drive the shifting fork 430 to drive the switching wheel 420 to move and is connected to the first driving wheel 230 . The power source 410 transmits power to the first driving wheel through the switching wheel 420 Wheel 230. The first driving wheel 230 drives the knife tube adjusting sleeve 210 to rotate through the first driven wheel 220, so as to drive the knife tube 110 and the knife head 120 to rotate around the axis of the knife tube 110.

Specifically, the adjustment handle 700 is provided with a drive source, and the end of the pulling member 130 away from the cutter head 120 is inserted into the adjustment handle 700 and connected to the drive source, and the drive source is used to drive the The pulling member 130 further drives the cutter head 120 to rotate, so as to facilitate the cutting of the tissue to be cut. In this embodiment, the driving source is a micro-motor.

In another embodiment, the electric drive assembly 400 and the drive source may be the same component. Specifically, the power source 410 and the drive source are the same component.

The above-mentioned medical instrument 10 can drive the knife barrel adjusting assembly 200 and the knife head adjusting assembly 300 through the electric drive assembly 400 to realize the adjustment of the bending angle of the knife head 120, thereby facilitating the medical instrument 10 and intelligent medical equipment such as surgical robots and surgical navigation. It can interact with each other to realize automated, information-based and intelligent surgical operations, which greatly reduces the operational burden of the doctor's surgical process and improves the surgical efficiency.

The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described. However, as long as there is no contradiction between the combinations of these technical features, All should be regarded as the scope described in this specification.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (12)

1. The utility model provides an adjustment mechanism of medical instrument, its characterized in that, adjustment mechanism sets up on medical handle, be used for after medical handle connects medical cutter, adjust the sword pipe circumferential direction of medical cutter and the tool bit of medical cutter for the sword pipe is buckled, adjustment mechanism includes:

the knife tube adjusting assembly comprises a knife tube adjusting sleeve and a first transmission piece, the knife tube adjusting sleeve is used for being sleeved on the knife tube after the medical handle is connected with the medical knife, and the first transmission piece is in transmission connection with the knife tube adjusting sleeve;

the cutter head adjusting assembly comprises a cutter head adjusting sleeve and a second transmission piece, the cutter head adjusting sleeve is used for being indirectly connected with the cutter head after the medical handle is connected with the medical cutter, the cutter head adjusting sleeve can axially move along the cutter tube relative to the medical handle, and the second transmission piece is in transmission connection with the cutter head adjusting sleeve;

the electric driving assembly is used for driving the cutter tube adjusting sleeve to rotate through the first transmission piece so as to drive the cutter tube to rotate around the axis of the cutter tube; and the second transmission piece is used for driving the cutter head adjusting sleeve to axially move so as to drive the cutter head to bend relative to the cutter tube.

2. The adjustment mechanism of a medical instrument according to claim 1, wherein the electric driving assembly comprises a switching member and a power source, the switching member is connected to the power source, and the switching member is selectively connected to the first transmission member or the second transmission member, so that the power source selectively drives the knife tube adjustment assembly or the knife head adjustment assembly.

3. The adjusting mechanism of a medical instrument as claimed in claim 2, wherein the first transmission member includes a first driving wheel and a first driven wheel, the electric driving assembly is connected with the first driving wheel in a transmission manner, the first driving wheel is connected with the first driven wheel in a transmission manner, and the first driven wheel is synchronously connected with the knife tube adjusting sleeve in a rotation manner;

the second transmission part comprises a second driving wheel and a second driven wheel, the electric driving assembly is connected with the second driving wheel in a transmission mode, the second driving wheel is connected with the second driven wheel in a transmission mode, and the second driven wheel is connected with the cutter head adjusting sleeve in a transmission mode so as to achieve that the cutter head adjusting sleeve moves along the axial direction.

4. The adjustment mechanism of a medical instrument according to claim 3, wherein the switching member includes a switching wheel, the power source is connected to and drives the switching wheel to rotate, the first driving wheel, the switching wheel, and the second driving wheel are coaxially disposed at an interval in sequence, the switching wheel is movable between the first driving wheel and the second driving wheel, the switching wheel rotates the first driving wheel when moving to be connected to the first driving wheel, and rotates the second driving wheel when moving to be connected to the second driving wheel.

5. The adjustment mechanism of a medical instrument according to claim 4, wherein a first engaging tooth is formed on an end surface of the first driving wheel facing the switching wheel, and a second engaging tooth is formed on an end surface of the second driving wheel facing the switching wheel; the switching wheel faces the end face of the first driving wheel and is provided with first meshing teeth, the switching wheel faces the end face of the second driving wheel and is provided with second meshing teeth, when the switching wheel moves to the first driving wheel, the first meshing teeth are meshed with the first matching teeth, and when the switching wheel moves to the second driving wheel, the second meshing teeth are meshed with the second matching teeth.

6. The adjustment mechanism of a medical instrument of claim 4, wherein the switch further comprises a movement source that drives the switch wheel to move between the first drive wheel and the second drive wheel.

7. The adjusting mechanism of a medical instrument according to any one of claims 3 to 6, wherein the first transmission member further includes a first transmission belt and a first steering wheel, the first steering wheel is disposed between the first driving wheel and the first driven wheel, and the first steering wheel, the first driven wheel and the first driving wheel are located on a non-collinear line, and the first transmission belt sequentially spans the first driving wheel, the first steering wheel and the first driven wheel;

the second transmission part further comprises a second transmission belt and a second steering wheel, the second steering wheel is arranged between the second driving wheel and the second driven wheel, the second steering wheel, the second driven wheel and the second driving wheel are located on a non-identical straight line, and the second transmission belt sequentially spans the second driving wheel, the second steering wheel and the second driven wheel.

8. The adjusting mechanism of a medical instrument as claimed in any one of claims 3 to 6, wherein the first driving wheel and the first driven wheel are in gear engagement transmission or are in gear structure, and the first driving wheel is engaged with the first driven wheel; and/or the second driving wheel and the second driven wheel are in meshing transmission through a gear; or the second driving wheel and the second driven wheel are in a gear structure, and the second driving wheel is meshed with the second driven wheel.

9. The adjustment mechanism of a medical instrument as claimed in any one of claims 3-6, further comprising a mounting assembly, wherein the mounting assembly comprises a driven housing and a mounting member, the driven housing is disposed on the mounting member, the first driven wheel and the second driven wheel are both rotatably disposed in the driven housing, and the first driving wheel, the second driving wheel and the electric driving assembly are all disposed on the mounting member.

10. The adjustment mechanism of a medical instrument according to claim 2 or 3, wherein the switching member is a switch that selectively communicates a transmission path between the power source and the first transmission member or a transmission path between the power source and the second transmission member.

11. The adjustment mechanism of a medical device according to any one of claims 1-6, wherein the adjustment assembly further comprises a support member fixedly disposed on the medical handle, the adjustment sleeve is connected to the support member via a screw-threaded engagement, and the electric driving assembly is configured to drive the adjustment sleeve to rotate relative to the support member so as to axially move the adjustment sleeve relative to the support member.

12. A medical instrument comprising a medical cutter and a medical handle, wherein the medical instrument further comprises an adjustment mechanism of the medical instrument of any one of claims 1-11; the medical cutter comprises a cutter tube, a cutter head and a pulling part, the pulling part is arranged in the cutter tube in a penetrating mode, one end of the pulling part is connected with the cutter head, the other end of the pulling part is connected with the cutter head adjusting sleeve, and the cutter head adjusting sleeve moves axially to drive the pulling part to move axially so as to drive the cutter head to bend relative to the cutter tube; the knife pipe adjusting sleeve is sleeved on the knife pipe to drive the knife pipe to rotate circumferentially.

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