CN217548150U

CN217548150U - Medical instrument and tool bit adjusting mechanism thereof

Info

Publication number: CN217548150U
Application number: CN202221010159.8U
Authority: CN
Inventors: 郭毅军; 郭以宏; 刘继宇
Original assignee: Chongqing Xishan Science and Technology Co Ltd
Current assignee: Chongqing Xishan Science and Technology Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-10-11
Anticipated expiration: 2032-04-28

Abstract

The utility model relates to a medical instrument and tool bit adjustment mechanism thereof, tool bit adjustment mechanism include tool bit adjusting part and electric drive subassembly, and tool bit adjusting part includes driving medium and tool bit adjusting collar, and the tool bit adjusting collar is used for connecting the tool bit indirectly behind medical cutter is connected to medical handle, and the tool bit adjusting collar can be connected with the tool bit adjusting collar transmission for the body axial displacement of medical handle. Through electric drive assembly warp the driving medium drives the body axial displacement of tool bit adjusting collar for medical handle, because tool bit adjusting collar indirect connection tool bit, and then tool bit adjusting collar is relative to the in-process of body axial displacement of medical handle, can adjust the tool bit lateral buckling. The lateral bending angle of the cutter head can be adjusted by adjusting the moving distance of the cutter head adjusting sleeve, so that a surgeon can use the cutter head conveniently.

Description

Medical instrument and tool bit adjusting mechanism thereof

Technical Field

The utility model relates to the technical field of medical equipment, especially relate to medical instrument and tool bit adjustment mechanism thereof.

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 the bone tissues in minimally invasive spine and minimally invasive joint operations, a handle is generally arranged on the grinding tool, and a doctor controls the handle to control the grinding tool. Then, the setting angle of the knife head part of the traditional surgical knife relative to the handle part is fixed, and the setting angle of the knife head is adjusted mainly by depending on the manual operation capability of a doctor.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need to provide a medical instrument and a tool bit adjusting mechanism thereof, which are convenient for adjusting the setting angle of the tool bit.

A knife head adjusting mechanism of a medical instrument is used for adjusting the side bending of a knife head of a medical knife after a medical handle is connected with the medical knife, and is characterized in that the knife head adjusting mechanism comprises a knife head adjusting component and an electric driving component, and comprises a knife head adjusting sleeve and a transmission part, the knife head adjusting sleeve is used for being indirectly connected with the knife head after the medical handle is connected with the medical knife, the knife head adjusting sleeve can axially move relative to a body of the medical handle, and the transmission part is in transmission connection with the knife head adjusting sleeve; the electric driving component is in transmission connection with the transmission part and is used for driving the cutter head adjusting sleeve to axially move through the transmission part so as to drive the cutter head to laterally bend.

In one embodiment, the cutting head adjusting component further comprises a support member disposed on the medical handle, the cutting head adjusting sleeve is in transmission fit with the support member, and the cutting head adjusting sleeve moves axially relative to the support member.

In one embodiment, the support member is fixedly arranged on the medical handle, and the cutter head adjusting sleeve and the support member are sleeved with each other and are connected in a threaded fit manner; the transmission piece comprises a first driven wheel, and the first driven wheel is sleeved on the cutter head adjusting sleeve; the electric driving assembly is used for driving the first driven wheel to rotate, and the first driven wheel drives the cutter head adjusting sleeve to axially move and circumferentially rotate relative to the supporting piece.

In one embodiment, the outer wall of the cutter head adjusting sleeve and the inner wall of the first driven wheel are provided with matching convex teeth on one, and matching tooth grooves are formed on the other, and the matching convex teeth are matched with the matching tooth grooves; the matching tooth grooves are strip-shaped grooves, and the length extending direction of the strip-shaped grooves is in the same direction as the rotation axis of the cutter head adjusting sleeve.

In one embodiment, the support member is axially limited on the medical handle, one of the cutter head adjusting sleeve and the support member is provided with a rack arranged along the axial direction, the outer wall of the other one of the cutter head adjusting sleeve and the support member is provided with meshing teeth arranged along the circumferential direction, and the meshing teeth are in meshing transmission with the rack;

the transmission part comprises a first driven wheel, the first driven wheel is in transmission fit with the cutter head adjusting sleeve, and the electric driving assembly is used for driving the first driven wheel to drive the cutter head adjusting sleeve to axially move relative to the supporting part.

In one embodiment, the knife tube adjusting mechanism of the medical instrument further comprises a mounting assembly, the mounting assembly comprises a driven housing and a mounting part, the driven housing is arranged on the mounting part, the first driven wheel is rotatably arranged in the driven housing, and the electric driving assembly is arranged on the mounting part.

In one embodiment, the cutter head adjusting sleeve is circumferentially limited on the medical handle, the transmission member comprises a first driven wheel, the first driven wheel is sleeved on the cutter head adjusting sleeve and is in threaded fit with the cutter head adjusting sleeve, the electric driving assembly is used for driving the first driven wheel to rotate, and the first driven wheel drives the cutter head adjusting sleeve to axially move; or

The driving part comprises a first driven wheel, the first driven wheel is of a gear structure, a rack arranged in the axial direction is arranged on the cutter head adjusting sleeve, the first driven wheel is meshed with the rack on the cutter head adjusting sleeve, the electric driving assembly is used for driving the first driven wheel to rotate, and the first driven wheel drives the cutter head adjusting sleeve to move in the axial direction.

In one embodiment, the transmission member further includes a first driving wheel, the first driving wheel is meshed with the first driven wheel, and the electric driving assembly is configured to drive the first driving wheel to rotate and drive the first driven wheel to rotate synchronously;

or the driving medium still includes first action wheel and first driving band, first action wheel with first follow driving wheel warp first driving band transmission is connected, electric drive subassembly is used for the drive first action wheel rotates, the warp first driving band drives first follow synchronous rotation of driving wheel.

In one embodiment, the cutter head adjusting assembly further comprises a pushing sleeve, the pushing sleeve is indirectly connected with the cutter head, and the pushing sleeve and the cutter head adjusting sleeve can synchronously move axially and are in sliding fit circumferentially.

In one embodiment, the pushing sleeve comprises a fixed part and a sliding part connected to the fixed part, the fixed part is used for being indirectly connected with the tool bit, a sliding groove is formed in the inner wall of the tool bit adjusting sleeve, the sliding groove is an annular groove around the moving direction of the tool bit adjusting sleeve, the sliding part is arranged in the sliding groove, and the sliding groove axially limits the sliding part and is in circumferential sliding fit with the sliding part; or alternatively

The pushing sleeve is connected to the inner ring of the bearing, and the outer ring of the bearing is fixed on the inner wall of the cutter head adjusting sleeve.

In one embodiment, an inner insert is arranged on the inner wall of the tool bit adjusting sleeve, the inner wall of the inner insert is provided with the sliding groove, the sliding groove is opened towards one side of the pushing sleeve in the axial moving direction, and a limiting part is arranged at the opening.

A medical instrument comprises a medical cutter, a medical handle and the cutter head adjusting mechanism; the medical cutter comprises a wrapping tube, a cutter head and a pulling part, wherein 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 laterally; the knife head adjusting sleeve is connected with the medical handle in a matching way.

Above-mentioned medical instrument and tool bit adjustment mechanism thereof, during the use, because the driving medium is connected with the transmission of tool bit adjusting collar, through electric drive subassembly warp the driving medium can drive tool bit adjusting collar for the body axial displacement of medical handle, because tool bit adjusting collar indirect connection tool bit, and then tool bit adjusting collar can adjust the tool bit lateral bend for the in-process of the body axial displacement of medical handle. The lateral bending angle of the cutter head can be adjusted by adjusting the moving distance of the cutter head adjusting sleeve, so that a surgeon can use the cutter head conveniently.

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 of 1. In the drawings:

FIG. 1 is a schematic view of a medical device according to one embodiment;

FIG. 2 is a top view of the medical device of FIG. 1;

FIG. 3 is a partial cross-sectional view of the medical device illustrated in FIG. 1;

FIG. 4 is a schematic view of the bit adjustment sleeve of FIG. 3;

FIG. 5 is a schematic view of the first driven wheel of FIG. 3;

FIG. 6 is a partial cross-sectional view of the bit adjustment mechanism of FIG. 3;

FIG. 7 is a schematic view of a portion of the adjustment assembly of the tool tip of FIG. 6;

FIG. 8 is a partial schematic structural view of the mounting assembly of FIG. 1;

fig. 9 is a schematic view of the mounting assembly shown in fig. 8 from another perspective.

Description of the reference numerals:

10. a medical instrument; 100. a medical knife; 110. a knife pipe; 120. a cutter head; 130. a pulling member; 200. a bit adjustment assembly; 210. a cutter head adjusting sleeve; 212. matching with the tooth socket; 214. a sliding groove; 216. an inner insert; 218. a limiting member; 220. a support member; 230. a first driven wheel; 232. matching with the convex teeth; 240. a pushing sleeve; 242. a fixed part; 244. a sliding part; 250. a first drive belt; 260. a first drive wheel; 270. a first steering wheel; 300. an electric drive assembly; 310. a power source; 320. a switching wheel; 330. a shifting fork; 340. a mobile source; 400. a cutter tube adjusting sleeve; 410. a limiting boss; 510. a driven housing; 520. a mounting member; 530. a first support frame; 540. a second support frame; 600. a knife tube transmission assembly; 610. a second driven wheel; 620. a second drive wheel; 630. a second belt; 640. a second steering wheel; 700. a medical handle.

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 fig. 3, in an embodiment of the present invention, the medical device 10 includes a medical knife 100, a knife head adjusting mechanism and a medical handle 700, the knife head adjusting mechanism is connected to the medical handle 700, and the angle of the medical knife 100 can be adjusted conveniently through the knife head adjusting mechanism, so as to facilitate the use of the medical device 10 by a doctor.

Specifically, the medical knife 100 includes a knife tube 110, a knife head 120 and a pulling member 130, the pulling member 130 is disposed in the knife tube 110, and one end of the pulling member 130 is connected to the knife head 120. The cutter head adjusting mechanism is used for adjusting the lateral bending of the cutter head 120 after the medical handle 700 is connected with the medical cutter 100.

Further, the cutter head adjusting mechanism comprises a cutter head adjusting component 200 and an electric driving component 300, the cutter head adjusting component 200 comprises a cutter head adjusting sleeve 210 and a transmission piece, the cutter head adjusting sleeve 210 is used for being indirectly connected with the cutter head 120 after the medical handle 700 is connected with the medical cutter 100, the cutter head adjusting sleeve 210 can axially move relative to the body of the medical handle 700, and the transmission piece is in transmission connection with the cutter head adjusting sleeve 210; the electric driving component 300 is connected to the transmission member in a transmission manner, and the electric driving component 300 is used for driving the tool bit adjusting sleeve 210 to move axially through the transmission member so as to drive the tool bit 120 to bend laterally.

During the use, because driving medium and tool bit adjusting sleeve 210 transmission are connected, can drive tool bit adjusting sleeve 210 for the body axial displacement of medical handle 700 through electric drive subassembly 300 warp the driving medium, because tool bit adjusting sleeve 210 indirect connection tool bit 120, and then tool bit adjusting sleeve 210 can be adjusted tool bit 120 lateral bending for the in-process of the body axial displacement of medical handle 700. The lateral bending angle of the cutter head 120 can be adjusted by adjusting the moving distance of the cutter head adjusting sleeve 210, so that the use of a surgeon is facilitated.

In this embodiment, the bit adjustment sleeve 210 moves axially to drive the pulling member 130 to move axially, so as to drive the bit 120 to bend laterally; the cutting head adjusting sleeve 210 is connected with the medical handle 700 in a matching way.

Specifically, one end of the pulling member 130 is hinged to the cutter head 120, and the pulling member 130 can move along the axial direction of the cutter tube 110 in the cutter tube 110 to bend the cutter head 120 laterally relative to the cutter tube 110.

Because the cutter head adjusting sleeve 210 is connected with the pulling member 130, the pulling member 130 can be driven to move along the axial direction of the cutter head adjusting sleeve 210. Because the cutter head 120 is hinged to the pulling member 130, when the cutter head adjusting sleeve 210 drives the pulling member 130 to move along the axial direction of the cutter tube 110 in the cutter tube 110, the cutter head 120 bends laterally relative to the cutter tube 110. The side bending angle of the cutter head 120 relative to the cutter tube 110 can be adjusted by controlling the moving distance of the cutter head adjusting sleeve 210 driving the pulling member 130.

In one embodiment, the cutting-head adjusting assembly 200 further includes a supporting member 220, the supporting member 220 is disposed on the medical handle 700, the cutting-head adjusting sleeve 210 is in transmission fit with the supporting member 220, and the cutting-head adjusting sleeve 210 moves axially relative to the supporting member 220. Movement of the cutting-head adjustment sleeve 210 relative to the medical handle 700 can be further facilitated by the provision of the support member 220.

Specifically, the supporting member 210 is fixedly disposed on the medical handle 700, and the cutting head adjusting sleeve 210 and the supporting member 220 are sleeved with each other and are connected in a threaded fit manner; the transmission member of the cutter head adjusting assembly 200 includes a first driven wheel 230, the first driven wheel 230 is sleeved on the cutter head adjusting sleeve 210, the electric driving assembly 300 is used for driving the first driven wheel 230 to rotate, and the first driven wheel 230 drives the cutter head adjusting sleeve 210 to axially move and circumferentially rotate relative to the supporting member 220. In other embodiments, the motorized drive assembly 300 may directly drive the bit adjustment sleeve 210 in rotation.

During use, the electric driving assembly 300 drives the first driven wheel 230 to drive the tool bit adjusting sleeve 210 to synchronously rotate, and the tool bit adjusting sleeve 210 is in threaded fit connection with the supporting member 220, so that the tool bit adjusting sleeve 210 can axially move relative to the supporting member 220.

Referring to fig. 4 and 5, in an embodiment, one of the outer wall of the cutter head adjusting sleeve 210 and the inner wall of the first driven wheel 230 is provided with a matching convex tooth 232, the other one is provided with a matching concave tooth 212, and the matching convex tooth 232 matches with the matching concave tooth 212. Through the mutual cooperation of cooperation dogtooth 232 and cooperation tooth's socket 212, can effectively guarantee that first driven wheel 230 drives tool bit adjusting sleeve 210 synchronous revolution. For example, the cutter head adjusting sleeve 210 is provided with a mating tooth groove 212 on the outer wall thereof, and a mating tooth 232 on the inner wall thereof is provided with the first driven wheel 230. Or, the outer wall of the cutter head adjusting sleeve 210 is provided with a matching convex tooth 232, and the inner wall of the first driven wheel 230 is provided with a matching tooth groove 212.

Specifically, the matching tooth grooves 212 are strip-shaped grooves, and the length extension direction of the strip-shaped grooves is in the same direction as the rotation axis of the cutter head adjusting sleeve 210. I.e. the length extension direction of the strip-shaped groove coincides with the moving direction of the cutter head adjusting sleeve 210 relative to the supporting part 220. When first driven wheel 230 drives tool bit adjusting sleeve 210 pivoted, because tool bit adjusting sleeve 210 removes for support piece 220, and then through the cooperation of bar groove with cooperation dogtooth 232 for tool bit adjusting sleeve 210 can remove for first driven wheel 230, does not influence first driven wheel 230 and drives tool bit adjusting sleeve 210 and rotate.

In this embodiment, the plurality of matching tooth slots 212 are provided, the plurality of matching tooth slots 212 are arranged around the axial direction of the cutter head adjusting sleeve 210 at intervals, the matching convex teeth 232 are arranged on the inner wall of the first driven wheel 230, the number of the matching convex teeth 232 is matched with the number of the matching tooth slots 212, and each matching convex tooth 232 can correspondingly penetrate through one matching tooth slot 212. Through the matching of the plurality of matching tooth grooves 212 and the matching convex teeth 232, the stability of the first driven wheel 230 driving the cutter head adjusting sleeve 210 to rotate is improved. In another embodiment, the number of mating lobes 232 may also be less than the number of mating gullets 212, e.g., the number of mating lobes 232 may be one, two, etc. other numbers.

Referring to fig. 3, fig. 6 and fig. 7, in this embodiment, the cutter head adjusting mechanism further includes a cutter tube adjusting sleeve 400, the cutter tube adjusting sleeve 400 and the supporting member 220 are arranged at an interval, the cutter tube adjusting sleeve 400 is used for being fixed on the cutter tube 110, one end of the cutter head adjusting sleeve 210 is connected to the supporting member 220 through a thread, the other end of the cutter head adjusting sleeve 210 is sleeved on the cutter tube adjusting sleeve 400, and the cutter head adjusting sleeve 210 can move and rotate along the axial direction of the cutter tube adjusting sleeve 400 relative to the cutter tube adjusting sleeve 400. Because the knife tube adjusting sleeve 400 is fixed on the knife tube 110, and further the knife head adjusting sleeve 210 can provide a guiding function for the movement of the knife head adjusting sleeve 210 in the process of rotating and moving relative to the supporting member 220, so that the knife head adjusting sleeve 210 can more stably drive the pulling member 130 to move.

Specifically, a limiting boss 410 is formed on the outer wall of the knife tube adjusting sleeve 400, the knife head adjusting sleeve 210 can abut against the limiting boss 410 in the moving process, and the moving distance of the knife head adjusting sleeve 210 can be limited by the limiting boss 410.

In one embodiment, the supporting member 220 is inserted into one end of the tool bit adjusting sleeve 210, an external thread is disposed on an outer wall of the supporting member 220, an internal thread is disposed on an inner wall of one end of the tool bit adjusting sleeve 210, and the internal thread is matched with the external thread. When the bit adjustment sleeve 210 is rotated relative to the support member 220, the bit adjustment sleeve 210 is able to move relative to the support member 220 by the engagement of the internal threads with the external threads.

In another embodiment, a threaded hole may be further formed in the support member 220, and one end of the tool bit adjusting sleeve 210 is inserted into the threaded hole, so as to achieve the threaded connection between the support member 220 and the tool bit adjusting sleeve 210.

In other embodiments, the supporting member 220 is axially limited on the medical handle 700, and one of the cutting head adjusting sleeve 210 and the supporting member 220 is provided with a rack arranged along the axial direction, and the outer wall of the other is provided with engaging teeth arranged along the circumferential direction, and the engaging teeth are engaged with the rack for transmission; the transmission member comprises a first driven wheel 230, the first driven wheel 230 is in transmission fit with the cutter head adjusting sleeve 210, and the electric driving assembly 300 is used for driving the first driven wheel 230 to drive the cutter head adjusting sleeve 210 to axially move relative to the supporting member 220.

For example, a rack is disposed on the outer wall of the bit adjustment sleeve 210, and engaging teeth are disposed on the support member 220, so that when the electric driving assembly 300 drives the first driven wheel 230 to rotate, the bit adjustment sleeve 210 is driven to move relative to the support member 220. Specifically, the first driven wheel 230 is a gear, and a rack is disposed on an outer wall of the cutter head adjusting sleeve 210 to engage with the first driven wheel 230.

In another embodiment, the supporting member 210 may be omitted, the cutting head adjusting sleeve 210 is circumferentially limited on the medical handle 700, the transmission member includes a first driven wheel 230, the first driven wheel 230 is sleeved on the cutting head adjusting sleeve 210 and is in threaded fit, the electric driving assembly 300 is configured to drive the first driven wheel 230 to rotate, and the first driven wheel 230 drives the cutting head adjusting sleeve 210 to axially move. Axial movement of the bit adjustment sleeve 210 can be achieved by a threaded engagement as the first driven pulley 230 rotates.

In another embodiment, the supporting member 210 may be omitted, and the transmission member includes a first driven wheel 230, the first driven wheel 230 is of a gear structure, the cutter head adjusting sleeve 210 is provided with a rack arranged along the axial direction, the first driven wheel 230 is engaged with the rack on the cutter head adjusting sleeve 210, the electric driving assembly 230 is used for driving the first driven wheel 230 to rotate, and the first driven wheel 230 drives the cutter head adjusting sleeve 210 to move axially.

Referring to fig. 1 and fig. 2, in an embodiment, the transmission member of the cutter head adjusting assembly 200 further includes a first transmission belt 250 and a first driving wheel 260, the first driving wheel 260 is in transmission connection with the first driven wheel 230 through the first transmission belt 250, and the electric driving assembly 300 is configured to drive the first driving wheel 260 to rotate, and drive the first driven wheel 230 to rotate synchronously through the first transmission belt 250. The electric driving assembly 300 drives the first driving wheel 260 to rotate, thereby realizing the rotation of the first driven wheel 230. Meanwhile, the first transmission belt 250 has the moving flexibility, so that the safety in the transmission process can be ensured, and the first driven wheel 230 is prevented from being stuck in the rotating process.

In other embodiments, the transmission member further includes a first driving wheel 260, the first driving wheel 260 is meshed with the first driven wheel 250, and the electric driving assembly 300 is configured to drive the first driving wheel 260 to rotate, so as to drive the first driven wheel 250 to rotate synchronously. Specifically, the first driving wheel 260 and the first driven wheel 250 are both gears.

In one embodiment, the cutter head adjusting assembly 200 further includes a first steering wheel 270, the first driving wheel 260 is located on one side of the axis of the first driven wheel 230, the first steering wheel 270 is disposed between the first driving wheel 260 and the first driven wheel 230, and the first steering wheel 270, the first driven wheel 230 and the first driving wheel 260 are located on a non-collinear line, and the first transmission belt 250 is spanned by the first driving wheel 260 over the first steering wheel 270 and over the first driven wheel 230. The first steering wheel 270 is arranged to change the direction of the first driving belt 250, so that the first driving wheel 260 and the first driven wheel 230 are not limited by the arrangement of the first driving belt 250.

In one embodiment, the cutting-head adjustment mechanism further comprises a mounting assembly, the electric driving assembly 300 is disposed on the mounting assembly, and the first driven wheel 230 is rotatably disposed on the mounting assembly. Can provide the erection bracing for electric drive assembly 300 through setting up the installation component, guarantee simultaneously that first from the stable rotation of driving wheel 230, avoid first from driving wheel 230 to remove because the removal of tool bit adjusting collar 210, influence the stability of rotating the transmission. Specifically, the first driving wheel 260 and the first steering wheel 270 are both rotatably disposed on the mounting assembly.

In this embodiment, the mounting assembly includes a driven housing 510 and a mounting member 520, the driven housing 510 is disposed on the mounting member 520, the first driven wheel 230 is rotatably disposed in the driven housing 510, and the electric driving assembly 300 is disposed on the mounting member 520. Specifically, the first driven wheel 230 is disposed within the driven housing 510 via a bearing. Not only the first driven wheel 230 can be provided by the driven housing 510, but also the first driven wheel 230 can be protected.

Referring to fig. 8 and 9, in one embodiment, the mounting assembly further includes a first supporting frame 530 and a second supporting frame 540, the first supporting frame 530 and the second supporting frame 540 are disposed on one side of the driven housing 510 and are disposed on the mounting member 520, the first steering wheel 270 is rotatably disposed on the first supporting frame 530, the first driving wheel 260 is rotatably disposed on the second supporting frame 540, and the electric driving assembly 300 is disposed on the mounting member 520. The first driving wheel 260 and the first steering wheel 270 can be conveniently supported by the first supporting frame 530 and the second supporting frame 540.

In the present embodiment, the first support frame 530 is disposed on the driven housing 510, and the first support frame 530 is disposed on the mounting member 520 through the driven housing 510. Specifically, the first support frame 530 is integrally formed on the driven housing 510. In other embodiments, the first support frame 530 may also be separately disposed on the mounting member 520.

Referring to fig. 3 and 7, in an embodiment, the cutter head adjusting assembly 200 further includes a push sleeve 240, the push sleeve 240 is indirectly connected to the cutter head 120, and the push sleeve 240 and the cutter head adjusting sleeve 210 are axially movable and circumferentially slidably engaged in a synchronous manner. In this embodiment, the bit adjustment sleeve 210 does not drive the pushing sleeve 240 to rotate when rotating in the circumferential direction, and drives the pushing sleeve 240 to move when moving in the axial direction, so as to ensure the lateral bending of the bit 120.

Specifically, the pushing sleeve 240 comprises a fixing portion 242 and a sliding portion 244 connected to the fixing portion 242, the fixing portion 242 is used for being indirectly connected to the tool bit 120, a sliding groove 214 is formed in the inner wall of the tool bit adjusting sleeve 210, the sliding groove 214 is an annular groove around the moving direction of the tool bit adjusting sleeve 210, the sliding portion 244 is arranged in the sliding groove 214, and the sliding groove 214 is axially limited and circumferentially matched with the sliding portion 244. Because the fixing portion 242 of the pushing sleeve 240 is indirectly connected to the cutter head 120, and the sliding portion 244 can rotate in the sliding groove 214 of the cutter head adjusting sleeve 210, when the cutter head adjusting sleeve 210 rotates, the pushing sleeve 240 can rotate synchronously without following the cutter head adjusting sleeve 210, and the pushing sleeve 240 can move synchronously with the cutter head adjusting sleeve 210 by using the limit relationship between the sliding groove 214 and the sliding portion 244 along the moving direction, so as to drive the pulling member 130 to move. In this embodiment, the fixing portion 242 is used for being fixed on the pulling member 130.

Specifically, the fixing portion 242 is a cylinder, and the sliding portion 244 is a ring, which is sleeved on the outer wall of the cylinder and located in the annular sliding groove 214. In other embodiments, the fixing portion 242 may also be at least two sheet structures circumferentially spaced around the pulling member 130. Alternatively, the fixing portion 242 may be fixed to the pulling member 130. In other embodiments, the sliding part 244 may be a protrusion structure disposed on the fixing part 242, as long as the sliding part 244 can be ensured to rotate in the sliding groove 214.

In the present embodiment, the fixing portion 242 and the sliding portion 244 are integrally formed, so that the structural stability of the pushing sleeve 240 is ensured. In other embodiments, the sliding portion 244 may be snapped onto the fixing portion 242, or the sliding portion 244 may be fixed on the fixing portion 242 by other methods such as welding, gluing, and the like.

In other embodiments, the sliding sleeve 240 is disposed on the inner wall of the bit adjustment sleeve 210 through a bearing. Specifically, the pushing sleeve 240 is connected to an inner ring of a bearing, and an outer ring of the bearing is fixed on an inner wall of the cutter head adjusting sleeve 210. The axial limit of the push sleeve 240 and the cutter head adjusting sleeve 210 can be realized by using a bearing, and the relative rotation in the circumferential direction can be realized.

In one embodiment, an insert 216 is disposed on the inner wall of the bit adjustment sleeve 210, and the sliding groove 214 is formed on the insert 216. Specifically, the inner wall of the insert 216 is formed with the sliding groove 214, the sliding groove 214 is opened toward one side of the axial moving direction of the push sleeve 240, and a stopper 218 is disposed at the opening. Since the sliding portion 244 is rotatable relative to the tip adjustment sleeve 210, direct rotational friction between the sliding portion 244 and the inner wall of the tip adjustment sleeve 210 is avoided by the provision of the inner insert 216. When the sliding device is installed, the pushing sleeve 240 can be installed in the sliding groove 214 from the opening side of the sliding groove 214, and then is limited in the sliding groove 214 by the limiting member 218.

In one embodiment, a supporting cavity is formed in the medical handle 700, the supporting cavity is disposed in a power source, one end of the pulling member 130, which is away from the cutting head 120, penetrates through the supporting cavity and is connected to the power source, and the power source drives the pulling member 130 to drive the cutting head 120 to rotate. The power source drives the cutter head 120 to rotate through the pulling member 130, so as to facilitate the cutting of the tissue to be cut. In this embodiment, the power source is a micro-motor.

Referring to fig. 1 to 3, in an embodiment, the knife tube 110 can drive the knife head 120 to rotate around an axis of the knife tube 110, and the electric driving assembly 300 is configured to drive the knife tube adjusting sleeve 400 to drive the knife tube 110 to rotate synchronously. The electric driving assembly 300 is controlled to drive the cutter tube adjusting sleeve 400 to rotate, so that the adjustment of the setting direction of the cutter head 120 can be controlled, the cutter head 120 can be controlled more accurately, and the automatic control of the medical instrument 10 is facilitated.

In an embodiment, the medical device 10 further includes a knife tube transmission assembly 600, the knife tube transmission assembly 600 includes a second driven wheel 610, a second driving wheel 620 and a second transmission belt 630, the second driving wheel 620 and the second driven wheel 610 are disposed at an interval, the second transmission belt 630 is disposed across the second driving wheel 620 and the second driven wheel 610, the second driven wheel 610 is sleeved on the knife tube adjusting sleeve 400, the second driven wheel 610 can rotate synchronously with the knife tube adjusting sleeve 400, and the electric driving assembly 300 is configured to drive the second driving wheel 620 to rotate. Specifically, the second driven wheel 610 is disposed within the driven housing 510.

In other embodiments, the second driving belt 630 may be omitted, and the second driven wheel 610 and the second driving wheel 620 may be in a gear engagement structure.

In another embodiment, the second driving wheel 620 may be omitted, the second driven wheel 610 is directly connected to the knife tube adjusting sleeve 400 in a transmission manner, and the second driven wheel 610 rotates to drive the knife tube adjusting sleeve 400 to rotate synchronously. For example, the knife tube adjusting sleeve 400 and the second driven wheel 610 are both gear structures.

Further, the knife tube transmission assembly 600 further includes a second steering wheel 640, the second steering wheel 640 is disposed between the second driving wheel 620 and the second driven wheel 610, the second steering wheel 640, the second driven wheel 610 and the second driving wheel 620 are located on a non-collinear line, and the second transmission belt 630 is spanned by the second driving wheel 620 over the second steering wheel 640 and spanned over the second driven wheel 610. The second steering wheel 640 is arranged to change the direction of the second transmission belt 630, so that the second driving wheel 620 and the second driven wheel 610 are not limited by the arrangement of the second transmission belt 630. Specifically, the second steering wheel 640 is provided on the first support frame 530. In other embodiments, the second steerable wheel 640 may also be omitted.

In one embodiment, the electric driving assembly 300 includes a power source 310 and a switching wheel 320, the first driving wheel 260 and the second driving wheel 620 are coaxially arranged at an interval, and the first driving wheel 260, the switching wheel 320 and the second driving wheel 620 are sequentially coaxially arranged at an interval; the power source 310 is configured to drive the switching wheel 320 to rotate, and the switching wheel 320 can move between the first driving wheel 260 and the second driving wheel 620, so that the switching wheel 320 is connected with the first driving wheel 260 and drives the first driving wheel 260 to rotate, or is connected with the second driving wheel 620 and drives the second driving wheel 620 to rotate. Because the power source 310 drives the switching wheel 320 to rotate around the axis of the switching wheel, when the switching wheel 320 is connected with the first driving wheel 260, the rotation of the switching wheel 320 can be transmitted to the first driving wheel 260, and the rotation adjustment of the knife pipe 110 is realized. When the switching wheel 320 is connected to the second driving wheel 620, the rotation of the switching wheel 320 can be transmitted to the second driving wheel 620, so as to adjust the lateral bending angle of the cutter head 120.

In one embodiment, the electric driving assembly 300 further includes a shifting fork 330 and a moving source 340, the shifting fork 330 is disposed on the switching wheel 320, and the moving source 340 is configured to drive the shifting fork 330 to drive the switching wheel 320 to move between the first driving wheel 260 and the second driving wheel 620, so that the switching wheel 320 is connected to the first driving wheel 260 or the second driving wheel 620.

Specifically, an annular groove is formed on an outer wall of the switching wheel 320 around an axis of the switching wheel 320, and the fork 330 is disposed in the annular groove. The stability of shifting the shifting fork 330 to shift the switching wheel 320 is ensured by the annular groove.

In one embodiment, a first engaging tooth is formed on an end surface of the first driving wheel 260 facing the second driving wheel 620, and a second engaging tooth is formed on an end surface of the second driving wheel 620 facing the first driving wheel 260; the end surface of the switching wheel 320 facing the first driving wheel 260 is provided with a first engaging tooth, the end surface of the switching wheel 320 facing the second driving wheel 620 is provided with a second engaging tooth, and the switching wheel 320 moves between the first driving wheel 260 and the second driving wheel 620 so that the first engaging tooth is engaged with the first mating tooth or the second engaging tooth is engaged with the second mating tooth. Switching wheel 320 is at the in-process that moves towards first action wheel 260, and first meshing tooth is close to first cooperation tooth and meshing gradually, and the in-process of meshing need not satisfy other counterpoint requirements, and it is more smooth and easy to switch, and the stability of switching is better. Similarly, when the fork 330 drives the switching wheel 320 to move towards the second driving wheel 620, the second engaging teeth and the second engaging teeth are engaged, so that the switching is smoother and the switching stability is better.

Above-mentioned medical instrument 10 can drive tool bit adjusting part 200 and sword pipe drive assembly 300 through electric drive assembly 300 and realize that tool bit 120 sets up the regulation of angle, and then be convenient for medical instrument 10 and operation robot, operation navigation intelligent medical equipment such as one kind are mutually, realize automatic, information-based and intelligent operation, reduce doctor's operation process's operation burden greatly, promote operation efficiency.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification 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 concept of the present invention, several variations and modifications can be made, which all fall 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 of the 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," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate 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

1. The utility model provides a tool bit adjustment mechanism of medical instrument for after medical handle connects medical cutter, adjust the tool bit lateral bend of medical cutter, its characterized in that, tool bit adjustment mechanism includes:

the cutter head adjusting assembly comprises a cutter head adjusting sleeve and a 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 relative to the body of the medical handle, and the transmission piece is in transmission connection with the cutter head adjusting sleeve;

and the electric driving component is in transmission connection with the transmission part and is used for driving the cutter head adjusting sleeve to axially move through the transmission part so as to drive the cutter head to laterally bend.

2. The medical instrument blade adjustment mechanism of claim 1, wherein the blade adjustment assembly further comprises a support member disposed on the medical handle, the blade adjustment sleeve is in driving engagement with the support member, and the blade adjustment sleeve moves axially relative to the support member.

3. The medical instrument cutting head adjusting mechanism according to claim 2, wherein the support member is fixedly disposed on the medical handle, and the cutting head adjusting sleeve and the support member are mutually sleeved and connected in a threaded fit; the transmission part comprises a first driven wheel, and the first driven wheel is sleeved on the cutter head adjusting sleeve; the electric driving assembly is used for driving the first driven wheel to rotate, and the first driven wheel drives the cutter head adjusting sleeve to axially move and circumferentially rotate relative to the supporting piece.

4. The cutter head adjusting mechanism of the medical instrument according to claim 3, wherein one of the outer wall of the cutter head adjusting sleeve and the inner wall of the first driven wheel is provided with a matching convex tooth, the other one of the outer wall of the cutter head adjusting sleeve and the inner wall of the first driven wheel is provided with a matching tooth socket, and the matching convex tooth is matched with the matching tooth socket; the matching tooth grooves are strip-shaped grooves, and the length extending direction of the strip-shaped grooves is in the same direction as the rotation axis of the cutter head adjusting sleeve.

5. The medical instrument cutting head adjusting mechanism according to claim 2, wherein the support member is axially limited on the medical handle, one of the cutting head adjusting sleeve and the support member is provided with a rack arranged along the axial direction, the other one of the cutting head adjusting sleeve and the support member is provided with an engaging tooth arranged along the circumferential direction, and the engaging tooth is engaged with the rack for transmission;

6. The blade adjustment mechanism of a medical instrument according to any one of claims 3-5, further comprising a mounting assembly, the mounting assembly including a driven housing and a mounting member, the driven housing being disposed on the mounting member, the first driven wheel being rotatably disposed within the driven housing, and the motorized drive assembly being disposed on the mounting member.

7. The cutter head adjusting mechanism of the medical instrument as claimed in claim 1, wherein the cutter head adjusting sleeve is circumferentially limited on the medical handle, the transmission member comprises a first driven wheel, the first driven wheel is sleeved on the cutter head adjusting sleeve and is in threaded fit with the cutter head adjusting sleeve, the electric driving assembly is used for driving the first driven wheel to rotate, and the first driven wheel drives the cutter head adjusting sleeve to axially move; or alternatively

8. The cutter head adjusting mechanism of the medical apparatus according to claim 3, 5 or 7, wherein the transmission member further comprises a first driving wheel, the first driving wheel is meshed with the first driven wheel, and the electric driving assembly is configured to drive the first driving wheel to rotate so as to drive the first driven wheel to rotate synchronously;

9. The medical instrument cutting head adjusting mechanism according to claim 2 or 3, wherein the cutting head adjusting assembly further comprises a pushing sleeve, the pushing sleeve is indirectly connected with the cutting head, and the pushing sleeve and the cutting head adjusting sleeve can synchronously move axially and are in circumferential sliding fit.

10. The cutter head adjusting mechanism of the medical instrument according to claim 9, wherein the pushing sleeve comprises a fixing portion and a sliding portion connected to the fixing portion, the fixing portion is used for indirectly connecting the cutter head, a sliding groove is formed in an inner wall of the cutter head adjusting sleeve, the sliding groove is an annular groove around a moving direction of the cutter head adjusting sleeve, the sliding portion is arranged in the sliding groove, and the sliding groove axially limits the sliding portion and is in sliding fit with the sliding portion in a circumferential direction; or

11. The tool bit adjusting mechanism of a medical instrument according to claim 10, wherein an inner insert is disposed on an inner wall of the tool bit adjusting sleeve, the inner insert has the sliding groove formed on an inner wall thereof, the sliding groove opens toward one side of the pushing sleeve in an axial moving direction, and a stopper is disposed at the opening.

12. A medical instrument comprising a medical knife, a medical handle, and a blade adjustment mechanism as claimed in any one of claims 1 to 11; wherein, the first and the second end of the pipe are connected with each other,

the medical cutter comprises a cutter tube, a cutter head and a pulling part, the pulling part penetrates through the cutter tube, 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 laterally; the knife head adjusting sleeve is connected with the medical handle in a matching way.