CN111658062B - Elbow pipe grinding tool with angle-adjustable tool bit - Google Patents
Elbow pipe grinding tool with angle-adjustable tool bit Download PDFInfo
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- CN111658062B CN111658062B CN202010612412.6A CN202010612412A CN111658062B CN 111658062 B CN111658062 B CN 111658062B CN 202010612412 A CN202010612412 A CN 202010612412A CN 111658062 B CN111658062 B CN 111658062B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1671—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the spine
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1659—Surgical rasps, files, planes, or scrapers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B2017/1602—Mills
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B2017/320004—Surgical cutting instruments abrasive
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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Abstract
The invention discloses a bent pipe grinding tool with an adjustable tool bit angle, which comprises: outer cutter arbor subassembly, interior cutter arbor subassembly and diversion control mechanism, wherein, outer cutter arbor subassembly includes outer cutter arbor main part, and interior cutter arbor main part includes interior cutter arbor main part, and outer cutter arbor main part is crooked shape, interior cutter arbor main part be with outer cutter arbor main part assorted crooked shape, diversion control mechanism is used for the drive support the cover around first articulated pivot is rotatory. According to the elbow grinding cutter with the angle-adjustable cutter bit, the outer cutter tube main body is in the bent shape, so that the elbow grinding cutter can reach an operation part more smoothly during a specific operation, and the operation is convenient; moreover, the direction-changing control rod is of a rigid structure, so that the vibration of the cutter head during operation can be reduced compared with a soft structure, and the control precision is higher.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a bent pipe grinding tool with an adjustable tool bit angle.
Background
In some bone surgeries, it is sometimes necessary to grind bone tissue in a patient using a grinding tool, and existing grinding tools generally include a shaft portion and a spherical or cylindrical head portion provided at a front end of the shaft portion. The head of the earliest grinding cutter can not be bent, the working area is small, and the earliest grinding cutter is suitable for a few types of operations. In order to solve the defects, a grinding tool with an adjustable head bending angle is provided, and the grinding tool comprises an outer tool tube, an inner tool bar arranged in the outer tool tube, a grinding head movably matched and connected with the front end of the inner tool bar, and an angle adjusting mechanism for adjusting the bending angle between the grinding head and the inner tool bar. However, the outer cutter tube and the inner cutter bar of the grinding cutter with the adjustable head bending angle are both linear, and when certain operations (such as spinal operations) are performed, some narrow parts or lateral grinding heads cannot smoothly reach the operation parts.
Disclosure of Invention
Aiming at the current situation of the prior art, the invention aims to provide the bent pipe grinding tool with the angle-adjustable tool bit, which can more smoothly reach the operation part in a specific operation and is convenient to operate.
In order to solve the above technical problem, the present invention provides a bend pipe grinding tool with an adjustable tool bit angle, comprising: an outer cutter tube assembly comprising an outer cutter tube body, a support sleeve and a first hinge mechanism arranged between the front end of the outer cutter tube body and the rear end of the support sleeve, the first hinge mechanism being used for enabling the support sleeve and the outer cutter tube body to rotate relative to each other around a first hinge rotating shaft; the inner cutter bar component comprises an inner cutter bar main body arranged in the outer cutter bar main body in a penetrating mode, a cutter head arranged in the supporting sleeve in a penetrating mode and a second hinge mechanism arranged between the front end of the inner cutter bar main body and the rear end of the cutter head, and the second hinge mechanism is used for enabling the cutter head and the inner cutter bar main body to rotate relatively around a second hinge rotating shaft and transmitting torque; the outer cutter tube main body is bent, the inner cutter rod main body is bent and matched with the outer cutter tube main body, and the outer cutter tube main body further comprises a turning control mechanism, and the turning control mechanism is used for driving the supporting sleeve to rotate around the first hinged rotating shaft.
The elbow grinding cutter with the angle-adjustable cutter head has the advantages that the outer cutter tube main body is in the bent shape, so that the elbow grinding cutter can more smoothly reach an operation part in a specific operation, and the operation is convenient.
Preferably, the turning control mechanism comprises a turning control rod and a turning driving mechanism, the turning control rod is in a bent shape matched with the outer cutter tube main body, the turning control rod penetrates through the outer cutter tube main body and can move back and forth along the axial direction of the outer cutter tube main body, and the turning driving mechanism is used for driving the turning control rod to move back and forth along the axial direction of the outer cutter tube main body.
Preferably, the direction-changing control rod comprises a first curved control tube and a second straight control tube which are sequentially connected from front to back or from back to front, the first control tube and the second control tube are connected through a first movable connection mechanism, and the first movable connection mechanism enables the first control tube and the second control tube to move relative to each other along the radial direction of the outer cutter tube main body.
Preferably, the first movable connecting mechanism comprises a first limiting groove arranged on the first control tube or the second control tube and a first limiting pin arranged on the second control tube or the first control tube and matched with the first limiting groove, the end part of the first limiting pin is inserted into the first limiting groove, and a gap is reserved between the end surface of the insertion end of the limiting pin and the bottom surface of the limiting groove.
Preferably, a first plug is arranged on the first control tube or the second control tube, the first plug is inserted into the second control tube or the first control tube, the first limit groove is arranged on the first plug, and the first limit pin is arranged on the tube wall of the second control tube or the first control tube.
Preferably, an avoidance groove is formed in an outer wall surface of the turning of the first control tube and/or an outer wall surface of the turning of the outer cutter tube main body.
Preferably, the turning driving mechanism comprises a push-pull screw head, a turning adjusting knob and a limiting mechanism, the push-pull screw head is fixed at the rear end of the first control pipe or the second control pipe, the turning adjusting knob is sleeved on the push-pull screw head and is in threaded fit with the push-pull screw head, and the limiting mechanism is used for limiting the push-pull screw head to rotate.
Preferably, the direction-changing control lever includes a first control tube having a straight line shape, a second control tube having a straight line shape, and an intermediate joint provided between the first control tube and the second control tube for allowing the first control tube and the second control tube to rotate relative to each other about an intermediate joint axis.
Preferably, the first control pipe is in threaded fit with the outer cutter pipe main body, the direction-changing driving mechanism is used for driving the second control pipe to rotate, and the intermediate joint is used for transmitting torque.
Preferably, joint heads or joint grooves are arranged at two ends of the middle joint, joint grooves or joint heads matched with the joint heads or the joint grooves are arranged on the first control pipe and the second control pipe, and the joint heads are clamped in the joint grooves and are in running fit with the joint grooves.
Preferably, the rear end of the turning control rod extends out of the rear end of the outer cutter tube main body, the turning driving mechanism comprises a push-pull screw head and a turning adjusting knob, the push-pull screw head is fixed at the rear end of the turning control rod, and the turning adjusting knob is sleeved on the push-pull screw head and is in threaded fit with the push-pull screw head.
Preferably, the direction-changing control lever further comprises a connecting piece arranged at the front end of the first control tube or the second control tube, the front end of the connecting piece is hinged to the rear end of the support sleeve, the rear end of the connecting piece is connected with the front end of the first control tube or the second control tube through a third movable connecting mechanism, and the third movable connecting mechanism enables the connecting piece and the first control tube or the second control tube to rotate relatively.
Preferably, the rotary cutting device further comprises a rotary adjusting mechanism, the rotary adjusting mechanism comprises an outer sleeve and a rotary driving mechanism, the outer sleeve is bent, the outer cutter tube main body is arranged in the outer sleeve in a penetrating mode and can rotate around the axis of the outer sleeve, and the rotary driving mechanism is used for driving the outer cutter tube main body to rotate relative to the outer sleeve.
Preferably, the outer cutter tube main body comprises an outer cutter tube front section, an outer cutter tube rear section and a third rotating connection mechanism arranged between the outer cutter tube front section and the outer cutter tube rear section, and the third rotating connection mechanism is used for transmitting torque.
Preferably, the rotary driving mechanism comprises a rotary adjusting knob which is connected with the rear end of the rear section of the outer cutter tube.
Preferably, the inner cutter bar main body comprises an inner cutter bar front section and an inner cutter bar rear section which are sequentially connected from front to back, the rear end of the inner cutter bar front section is connected with the front end of the inner cutter bar rear section through a fourth rotating connecting mechanism, and the fourth rotating connecting mechanism is used for transmitting torque.
Drawings
FIG. 1 is a perspective view of a bend pipe grinding tool with an angularly adjustable tool bit according to a first embodiment of the present invention;
FIG. 2 is a cross-sectional view of the angle adjustable angle nose grinding tool shown in FIG. 1;
FIGS. 3 and 4 are a front view and an exploded view, respectively, of a rotation adjustment mechanism of the elbow grinding tool with an angularly adjustable tool bit shown in FIG. 1;
FIGS. 5 and 6 are front and exploded views, respectively, of an inner blade assembly of the adjustable-blade angle elbow grinding tool of FIG. 1;
FIGS. 7 and 8 are a front view and an exploded view of a direction change control mechanism of the elbow grinding tool with an angularly adjustable tool bit shown in FIG. 1;
FIGS. 9, 10 and 11 are enlarged partial views at M, N, P in FIG. 1;
fig. 12 is a perspective view of a bent pipe grinding tool with an angularly adjustable tool bit according to a second embodiment of the present invention;
FIG. 13 is a cross-sectional view of the adjustable tool bit angle elbow grinding tool shown in FIG. 12;
FIG. 14 is an exploded view of the angle adjustable nose angle elbow grinding tool shown in FIG. 12;
FIG. 15 is a perspective view of a front section of an inner blade of the adjustable-blade angle elbow grinding tool shown in FIG. 12;
FIG. 16 is a schematic perspective view of a rear section of an inner blade of the adjustable-blade angle elbow grinding tool shown in FIG. 12;
FIG. 17 is a schematic perspective view of a first control tube of the adjustable-bit-angle elbow grinding tool of FIG. 12;
FIG. 18 is a perspective view of a second control tube of the adjustable-bit-angle elbow grinding tool of FIG. 12;
FIG. 19 is a perspective view of the intermediate joint of the adjustable-nose angle elbow grinding tool shown in FIG. 12;
FIG. 20 is a perspective view of the attachment of the adjustable-bit angle elbow grinding tool of FIG. 12;
fig. 21 is a partially enlarged view at I in fig. 12.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features in the following embodiments and examples may be combined with each other without conflict.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
As shown in fig. 1 and 2, the elbow grinding tool with an adjustable tool bit angle according to the first embodiment of the present invention includes a handle 10, an outer tool tube assembly 20, an inner tool tube assembly 30, and a direction-changing control mechanism 50, wherein the direction-changing drive mechanism 50 is disposed on the handle 10, the handle 10 includes a fixing sleeve 11, the outer tool tube assembly 20 includes a curved outer tool tube main body 21, a support sleeve 24, and a first hinge mechanism disposed between a front end of the outer tool tube main body 21 and a rear end of the support sleeve 24, and the first hinge mechanism enables the support sleeve 24 and the outer tool tube main body 21 to rotate relative to each other about a first hinge rotation axis L1. The inner blade assembly 30 includes a curved inner blade body 31 inserted into the outer blade tube body 21, a blade 37 inserted into the support sleeve 24, and a second hinge mechanism disposed between the front end of the inner blade body 31 and the rear end of the blade 37, wherein the second hinge mechanism enables the blade 37 and the inner blade body 31 to rotate relative to each other about a second hinge axis L2 and transmit torque. The direction-changing control mechanism is used for driving the supporting sleeve 24 to rotate around the first hinge rotating shaft L1 and comprises a direction-changing control rod 50 and a direction-changing driving mechanism, the direction-changing control rod 50 is in a bent shape matched with the outer cutter tube main body 21, the direction-changing control rod 50 penetrates through the outer cutter tube main body 21 and can axially slide relative to the outer cutter tube main body 21, the front end of the direction-changing control rod 50 and the rear end of the supporting sleeve 24 can be pivotally connected around a hinge axis L5, and the direction-changing driving mechanism is used for driving the direction-changing control rod 50 to axially slide back and forth along the outer cutter tube main body.
According to the elbow grinding cutter with the angle-adjustable cutter bit, the outer cutter tube main body 21 is in the bent shape, so that the elbow grinding cutter can reach an operation part more smoothly in a specific operation, and the operation is convenient.
As shown in fig. 1, 3 and 4, the outer cutter tube main body 21 in this embodiment includes an outer cutter tube front section 22 and an outer cutter tube rear section 23 which are sequentially connected from front to rear and form an obtuse angle with each other. For convenience of processing, the outer cutter tube front section 22 is of a split structure and comprises a direction-changing fixing tube 221 and a straight tube 222 which are sequentially connected from front to back, the rear end of the direction-changing fixing tube 221 is inserted into the front end of the straight tube 222 and is fixed by welding, and the front end of the direction-changing fixing tube 221 is connected with the rear end of the support sleeve 24 through a first hinge mechanism.
As shown in fig. 3 and 4, the first hinge mechanism in this embodiment includes a first joint groove 241 provided at the rear end of the support sleeve 24 and a first joint head 221b provided at the front end of the direction-changing fixing tube 221 and engaged with the first joint groove 241, the first joint head 221b is inserted into the first joint groove 241 and rotatably engaged with the first joint groove 241, and the first hinge rotating shaft L1 is a center line of the first joint head 221 b. Thus, when a push-pull force is applied to the rear end of the support sleeve 24, the support sleeve 24 is rotated about the first hinge axis L1. Preferably, the supporting sleeve 24 is provided with two first joint grooves 241 at the rear end thereof, the direction-changing fixing tube 221 is provided with two first joint heads 221b at the front end thereof, and the two first joint heads 221b are respectively inserted into the two first joint grooves 241, so that the supporting sleeve 24 and the outer knife tube main body 21 can rotate more stably. Alternatively, the first hinge mechanism may be another hinge, for example, mounting lugs are respectively disposed on the rear end of the supporting sleeve 24 and the front end of the outer cutter tube main body 21, and the two mounting lugs are connected by a pin.
Preferably, the elbow grinding tool in this embodiment further includes a rotation adjusting mechanism for enabling the tool bit to rotate around the axial direction when the tool bit is in the bending state, the rotation adjusting mechanism includes an outer sleeve 40 and a rotation driving mechanism, a rear end of the outer sleeve 40 is inserted and fixed in the fixing sleeve 11, the outer tool tube main body 21 is inserted into the outer sleeve 40 and can rotate relative to the outer sleeve 40, and the rotation adjusting mechanism is used for driving the outer tool tube main body 21 to rotate relative to the outer sleeve 40. Like this, when supporting cover 24 is in the bending condition (supporting cover 24 rotates certain angle around first articulated pivot L1 promptly), drive outer cutter tube main part 21 through rotary driving mechanism and rotate, rethread first hinge mechanism drives supporting cover 24 and rotates around the axis of outer cutter tube main part 21 to it is rotatory around the axis of outer cutter tube main part 21 to drive tool bit 37, thereby changes the direction of tool bit 37, and the working range of tool bit 37 is bigger like this, and it is more convenient to operate.
As shown in fig. 3 and 4, preferably, the straight tube 222 and the outer cutter tube rear section 23 in the present embodiment are of a split structure, and a third rotational connection mechanism is provided between the rear end of the straight tube 222 and the front end of the outer cutter tube rear section 23, and is used for transmitting torque. The third rotation connecting mechanism in this embodiment includes a third joint groove 222a provided on the rear end of the straight tube 222 and a third joint head 231 provided on the front end of the outer cutter tube rear section 23 and engaged with the third joint groove 222a, and the third joint head 231 is snapped into the third joint groove 222a and rotationally engaged with the third joint groove 222 a. Preferably, the rear end of the straight tube 222 is oppositely provided with two third joint grooves 222a, the front end of the outer cutter tube rear section 23 is oppositely provided with two third joint heads 231, and the two third joint heads 231 are respectively clamped into the two third joint grooves 222a, so that the rotation between the straight tube 222 and the outer cutter tube rear section 23 is more stable.
Preferably, in order to make the outer cutter tube main body 21 rotate smoothly, a guide structure for guiding the rotation of the outer cutter tube main body 21 is provided between the outer cutter tube main body 21 and the outer sleeve 40. The guide structure in this embodiment includes guide grooves 222b, 232 provided on the outer peripheral surfaces of the straight tube 222 and the outer cutter tube rear section 23, and guide pins 41, 42 provided on the outer sleeve 40 to be fitted to the guide grooves 222b, 232, and the ends of the guide pins 41, 42 are inserted into the guide grooves 222b, 232.
As shown in fig. 1-4, the rotary drive mechanism includes a rotary adjustment knob 15 rotatable relative to the fixed hub 11, the rotary adjustment knob 15 being connected to the rear end of the outer cutter tube rear section 23. The outer cutter pipe rear section 23 is driven to rotate by rotating the rotary adjusting knob 15, the straight pipe 222 and the direction-changing fixing pipe 221 are driven to rotate by the third rotating connecting mechanism, and the direction-changing fixing pipe 221 drives the supporting sleeve 24 to rotate by the first hinge mechanism, so that the cutter head 37 is driven to rotate. Preferably, the rear end of the rear section 23 of the outer knife tube is fixed with the transmission sleeve 14, the front end of the rotary adjusting knob 15 is provided with a support lug 152 extending forwards along the axial direction, the front end of the support lug 152 is welded on the transmission sleeve 14, and when the rotary adjusting knob 15 is rotated, the transmission sleeve 14 is driven to rotate, so that the rear section 23 of the outer knife tube is driven to rotate.
As shown in fig. 5 and 6, the inner cutter bar main body 31 in this embodiment includes an inner cutter bar front section 32 and an inner cutter bar rear section 33 sequentially connected from front to back, a rear end of the inner cutter bar front section 32 is connected with a front end of the inner cutter bar rear section 33 through a fourth rotation connection mechanism, and the fourth rotation connection mechanism is used for transmitting torque. In one embodiment, the fourth rotation connection mechanism comprises a fourth joint groove 321 disposed at the rear end of the inner cutter bar front section 32 and a fourth joint head 331 disposed at the front end of the inner cutter bar rear section 33 and matched with the fourth joint groove 321, and the fourth joint head 331 is clamped in the fourth joint groove 321 and is rotatably matched with the fourth joint groove 321.
The second hinge mechanism in this embodiment includes a second joint head 322 disposed at the front end of the front section 32 of the inner cutter bar and a second joint groove 373 disposed at the rear end of the cutter head 37 and engaged with the second joint head 322, and the second joint head 322 is inserted into the second joint groove 373 and rotatably engaged with the second joint groove 373.
For convenience of processing, the inner cutter bar rear section 33 includes an inner cutter bar rear section main body 34, an input rod 35 connected to a rear end of the inner cutter bar rear section main body 34, and an output rod 36 connected to a front end of the inner cutter bar rear section main body 34, wherein an interface for connecting to an output shaft of a driving device (such as a motor) is provided at a rear end of the input rod 35, and a fourth joint 331 is provided at a front end of the output rod 36.
As shown in fig. 5 and 6, the cutting head 37 in this embodiment includes a handle portion 371 penetrating the support sleeve 24 and a grinding portion 372 extending from the front end of the support sleeve 24, and the grinding portion 372 is provided with a cutting edge for cutting human tissue.
During operation, drive arrangement drives input rod 35 and rotates to cutter arbor back end main part 34, output rod 36 rotate in driving, rotate coupling mechanism through the fourth and drive interior cutter arbor anterior segment 32 rotatory, drive tool bit 37 through second hinge mechanism and rotate, cutting edge on the grinding portion 372 when tool bit 37 rotates excises the tissue.
As shown in fig. 7 and 8, the direction-changing control lever 50 in the present embodiment includes a first control tube 51 and a second control tube 52 connected in sequence from front to back, the first control tube 51 is curved to match the outer cutter tube main body 21, the rear end of the first control tube 51 is connected to the front end of the second control tube 52 by a first movable connection mechanism, and the first movable connection mechanism enables the first control tube 51 to move relative to the second control tube 52 in the radial direction of the outer cutter tube assembly 20. Since the first control tube 51 has a bent shape, when the second control tube 52 pushes the first control tube 51 to move forward, the rear end of the first control tube 51 moves upward in fig. 7 with respect to the second control tube 52, and when the second control tube 52 pushes the first control tube 51 to move backward, the rear end of the first control tube 51 moves downward in fig. 7 with respect to the second control tube 52. Alternatively, the positions of the first control tube 51 and the second control tube 52 are reversed, i.e., the first control tube 51 is located on the rear side of the second control tube 52. In this embodiment, the first control tube 51 and the second control tube 52 are rigid, so that the shaking of the cutter head 37 during the operation can be reduced and the control accuracy is higher than that of a flexible tube.
Preferably, as shown in fig. 7, 8 and 9, the first movable connecting mechanism includes a first limiting pin 53 disposed on the first control tube 51 and a first limiting groove 541 disposed on the second control tube 52 and engaged with the first limiting pin 53, an end of the first limiting pin 53 is inserted into the first limiting groove 541, and a gap is left between the end of the first limiting pin 53 and a bottom surface of the first limiting groove 541. Thus, the first control tube 51 and the second control tube 52 are not movable relative to each other in the axial direction of the outer cutter tube assembly 20 but are movable relative to each other in the radial direction of the outer cutter tube assembly 20 by the first stopper pin 53 and the first stopper groove 541. Preferably, the front end of the second control tube 52 is provided with a first plug 54, the first plug 54 is inserted into the rear end of the first control tube 51, the first limiting groove 541 is provided on the first plug 54, and the first limiting pin 53 is provided on the tube wall of the rear end of the first control tube 51. Preferably, the first limiting groove 541 is an annular groove, and the first limiting pin 53 is a fan-shaped groove, so that the contact area is large, and the transmission is more stable. Alternatively, the positions of the first stopper pin 53 and the first stopper groove 541 may be replaced, that is, the first stopper pin 53 is provided on the second control tube 52, and the first stopper groove 541 is provided on the first control tube 51.
In order to prevent interference between the first control tube 51 and the outer cutter tube main body 21 at the corner, an avoiding groove 511 (shown in fig. 7 and 11) is provided at the corner of the first control tube 51 and an avoiding groove 211 (shown in fig. 11) is provided at the corner of the outer cutter tube main body 21.
As shown in fig. 7 and 8, the direction-changing control lever 50 further includes a connecting member 55 provided at a front end of the first control tube 51, and a front end of the connecting member 55 is hinged to a rear end of the support sleeve 24. Preferably, connector 55 includes a tube portion 551 and a strip portion 552 extending axially forward from a front end of tube portion 551. The rear end of the support sleeve 24 is provided with a mounting groove 242 (see fig. 3), the front end of the bar portion 552 is inserted into the mounting groove 242, and a pin shaft (not shown) passes through the groove wall of the mounting groove 242 and the front end of the bar portion 552 to hinge the front end of the bar portion 552 to the rear end of the support sleeve 24.
Preferably, a guide protrusion 553 is provided on an outer side surface of the bar portion 552, a guide groove 221a engaged with the guide protrusion 553 is provided at a front end of the direction-changing fixing pipe 221, the guide protrusion 553 is located in the guide groove 221a, and the forward and backward movement of the connection member 55 is guided by the guide protrusion 553 and the guide groove 221a to be prevented from swinging. Preferably, the connection member 55 is connected to the front end of the first control tube 51 by a second movable connection mechanism, which allows the first control tube 51 and the connection member 55 to rotate relative to each other. Preferably, as shown in fig. 7, 8 and 10, the second movable connecting mechanism includes a second limiting groove 561 disposed on the first control pipe 51 and a second limiting pin 57 disposed on the connecting member 55 and engaged with the second limiting groove 561, and an end of the second limiting pin 57 is inserted into the second limiting groove 561. Preferably, the front end of the first control tube 51 is provided with a second plug 56, the rear end of the second plug 56 is inserted into the front end of the first control tube 51, a second limit groove 561 is provided on the second plug 56, and a second limit pin 57 is provided on the tube wall of the rear end of the connecting member 55. The second limiting groove 561 is an annular groove, and the second limiting pin 57 is fan-shaped.
The turning driving mechanism comprises a push-pull screw head 12, a turning adjusting knob 13 and a limiting mechanism, the push-pull screw head 12 is fixed at the rear end of the second control pipe 52, an external thread is arranged on the push-pull screw head 12, the turning adjusting knob 13 is sleeved on the push-pull screw head 12, an internal thread matched with the external thread is arranged on the turning adjusting knob 13, and the limiting mechanism is used for limiting the push-pull screw head to rotate. In this embodiment, the push-pull screw head 12 is of a flat square structure, the push-pull screw head 12 is located between the two support lugs 152 of the rotation adjusting knob 15, and the rotation of the push-pull screw head 12 is prevented by the two support lugs 152.
As shown in fig. 12 to 21, the elbow grinding tool with an adjustable angle of tool bit according to the second embodiment of the present invention includes a handle 10, an outer tool tube assembly 20, an inner tool tube assembly 30, and a direction change control mechanism, wherein the outer tool tube assembly 20 includes a curved outer tool tube main body 21, a support sleeve 24, and a first hinge mechanism disposed between a front end of the outer tool tube main body 21 and a rear end of the support sleeve 24, and the first hinge mechanism allows the support sleeve 24 and the outer tool tube main body 21 to rotate relative to each other about a first hinge rotation axis L1.
As shown in fig. 12 and 13, the outer cutting tube main body 21 in this embodiment includes an outer cutting tube front section 22 and an outer cutting tube rear section 23 which are connected in sequence from front to back and form an obtuse included angle with each other. For convenience of processing, the outer cutter tube front section 22 is of a split structure and comprises a direction-changing fixing tube 221 and a straight tube 222 which are sequentially connected from front to back, the rear end of the direction-changing fixing tube 221 is inserted into the front end of the straight tube 222 and is fixed by welding, and the front end of the direction-changing fixing tube 221 is connected with the rear end of the support sleeve 24 through a first hinge mechanism.
The first hinge mechanism in this embodiment includes a first joint groove 241 provided at the rear end of the support sleeve 24 and a first joint head 221b provided at the front end of the direction-changing fixing tube 221 and engaged with the first joint groove 241, the first joint head 221b is inserted into the first joint groove 241 and rotationally engaged with the first joint groove 241, and the first hinge rotating shaft L1 is a center line of the first joint head 221 b. Thus, when a push-pull force is applied to the rear end of the support sleeve 24, the support sleeve 24 is rotated about the first hinge axis L1. Preferably, the supporting sleeve 24 is provided with two first joint grooves 241 at the rear end thereof, the direction-changing fixing tube 221 is provided with two first joint heads 221b at the front end thereof, and the two first joint heads 221b are respectively inserted into the two first joint grooves 241, so that the supporting sleeve 24 and the outer knife tube main body 21 can rotate more stably. Alternatively, the first hinge mechanism may be another hinge, for example, mounting lugs are respectively disposed on the rear end of the supporting sleeve 24 and the front end of the outer cutter tube main body 21, and the two mounting lugs are connected by a pin.
As shown in fig. 13 to 16, the inner blade assembly 30 includes a curved inner blade main body 31 inserted into the outer blade tube main body 21, a blade 37 inserted into the support sleeve 24, and a second hinge mechanism disposed between the front end of the inner blade main body 31 and the rear end of the blade 37, and the second hinge mechanism allows the blade 37 and the inner blade main body 31 to rotate relative to each other about a second hinge axis L2 and transmits a torque. The inner cutter bar main body 31 includes an inner cutter bar front section 32 and an inner cutter bar rear section 33 which are connected in sequence from front to back, the rear end of the inner cutter bar front section 32 is connected with the front end of the inner cutter bar rear section 33 through a fourth rotating connecting mechanism, and the fourth rotating connecting mechanism enables the inner cutter bar front section 32 and the inner cutter bar rear section 33 to rotate relatively and transmit torque around a fourth rotating shaft. In one embodiment, the fourth rotation connection mechanism comprises a fourth joint groove 321 disposed at the rear end of the inner cutter bar front section 32 and a fourth joint head 331 disposed at the front end of the inner cutter bar rear section 33 and matched with the fourth joint groove 321, and the fourth joint head 331 is clamped in the fourth joint groove 321 and is rotatably matched with the fourth joint groove 321.
The inner blade bar front section 32 is connected to the rear end of the cutting head 37 by a second hinge mechanism. In one embodiment, the second hinge mechanism includes a second joint head 322 disposed at the front end of the front section 32 of the inner cutter bar and a second joint groove 373 disposed at the rear end of the cutter head 37 and engaged with the second joint head 322, and the second joint head 322 is snapped into the second joint groove 373 and rotatably engaged with the second joint groove 373.
As shown in fig. 14, the cutter head 37 in this embodiment includes a cutter shank portion 371 inserted into the support sleeve 24 and a grinding portion 372 extending from the front end of the support sleeve 24, and the grinding portion 372 is provided with a cutter edge for cutting human tissue. The third rotary connection mainly serves for positioning the cutter head 37.
During operation, the driving device drives the inner cutter bar rear section 33 to rotate, the fourth rotating connecting mechanism drives the inner cutter bar front section 32 to rotate, the second hinge mechanism drives the cutter head 37 to rotate, and the cutting edge on the cutter head 37 cuts off tissues.
As shown in fig. 13 and 14, the direction-changing control mechanism includes a direction-changing control lever 50 and a direction-changing drive mechanism, the direction-changing control lever 50 is disposed in the outer cutter tube main body 21 and includes a linear first control tube 51, a linear second control tube 52, and an intermediate joint 58 disposed between the first control tube 51 and the second control tube 52, the intermediate joint 58 being configured to allow the first control tube 51 and the second control tube 52 to rotate relative to each other about intermediate joint axes L3, L4. The front end of the first control tube 51 is pivotally connected to the rear end of the support sleeve 24 about a hinge axis L5, and the direction-changing driving mechanism is used for driving the first control tube 51 to move back and forth along the axial direction of the outer cutter tube main body 21. In the elbow grinding tool with an adjustable tool bit angle in this embodiment, the direction-changing driving mechanism drives the first control tube 51 to move back and forth along the axial direction of the outer tool tube main body 21, so that the support sleeve 24 rotates around the first hinge rotating shaft L1, and the tool bit 37 is driven to rotate, thereby achieving the purpose of changing the direction. Since the first control tube 51 and the second control tube 52 are rigid structures, the shaking of the cutter head 37 during the operation can be reduced compared with a flexible tube, and the control precision is higher.
Preferably, the first control tube 51 is threadedly engaged with the outer cutter tube body 21, the intermediate joint 58 is used for transmitting torque, and the direction-changing driving mechanism is used for driving the second control tube 52 to rotate. The direction-changing driving mechanism drives the second control tube 52 to rotate, the first control tube 51 is driven to rotate through the middle joint 58, the first control tube 51 moves forwards or backwards under the action of the screw threads, the supporting sleeve 24 rotates around the first hinge rotating shaft L1, and the cutter head 37 is driven to rotate. The first control tube 51 is in threaded fit with the outer cutter tube main body 21, and the first control tube 51 is good in motion stability and high in control accuracy.
As shown in fig. 17 to 19, the front end and the rear end of the intermediate joint 58 are respectively provided with a first joint 581 and a second joint 582, the rear end of the first control tube 51 is provided with a first connecting groove 514 matched with the first joint 581, and the first joint 581 is clamped in the first connecting groove 514 and is rotatably matched with the first connecting groove 514. The front end of the second control tube 52 is provided with a second connecting groove 521 matched with the second connecting head 582, and the second connecting head 582 is clamped into the second connecting groove 521 and is rotatably matched with the second connecting groove 521. Preferably, the front end of the intermediate joint 58 is oppositely provided with two first connecting joints 581, the rear end of the intermediate joint 58 is oppositely provided with two second connecting joints 582, the rear end of the first control tube 51 is oppositely provided with two first connecting grooves 514, the front end of the second control tube 52 is oppositely provided with two second connecting grooves 521, the two first connecting joints 581 are respectively clamped into the two first connecting grooves 514 and are in rotating fit with the first connecting grooves 514, and the two second connecting joints 582 are clamped into the two second connecting grooves 521 and are in rotating fit with the second connecting grooves 521, so that the rotation between the support sleeve 24 and the outer cutter tube main body 21 is smoother. For convenience of processing, the first control tube 51 includes a first control tube main body 512 and a connection pipe 513 connected to the front end of the first control tube main body 512, an external thread 512 is provided on the outer circumferential surface of the first control tube main body 512, and a first connection groove 514 is provided at the rear end of the first control tube main body 512.
As shown in fig. 14, 20 and 21, the direction-changing control lever 50 further includes a connecting member 55 provided at a front end of the connecting pipe 513, and a front end of the connecting member 55 is hinged to a rear end of the support sleeve 24. Preferably, connector 55 includes a tube portion 551 and a strip portion 552 extending axially forward from a front end of tube portion 551. The rear end of the support sleeve 24 is provided with a mounting groove 242 (see fig. 14), the front end of the bar 552 is inserted into the mounting groove 242, and a pin shaft (not shown) passes through the groove wall of the mounting groove 242 and the front end of the bar 552 to hinge the front end of the bar 552 to the rear end of the support sleeve 24.
Preferably, a guide protrusion 553 is provided on an outer side surface of the bar portion 552, a guide groove 221a (see fig. 14) engaged with the guide protrusion 553 is provided at a front end of the direction-changing fixing pipe 221, the guide protrusion 553 is located in the guide groove 221a, and the forward and backward movement of the connection member 55 is guided by the guide protrusion 553 and the guide groove 221a to be prevented from swinging. Preferably, the connection member 55 is connected to the front end of the connection pipe 513 by a third movable connection mechanism, which allows the first control pipe 51 and the connection member 55 to rotate relative to each other. Preferably, as shown in fig. 12, 19 and 20, the third movable connecting mechanism includes a third limiting groove 591 provided on the first control pipe 51 and a third limiting pin 59 provided on the connecting member 55 and engaged with the third limiting groove 591, and an end of the third limiting pin 59 is inserted into the third limiting groove 591. The third limit groove 591 is an annular groove, and the third limit pin 59 is fan-shaped.
As shown in fig. 13 and 14, the rear end of the direction-changing control rod 50 extends out of the rear end of the outer cutter tube main body 21, the transmission mechanism comprises a push-pull screw head 12, the push-pull screw head 12 is fixed at the rear end of the second control tube 52 of the direction-changing control rod 50, an external thread is arranged on the push-pull screw head 12, the direction-changing adjusting knob 13 is sleeved on the push-pull screw head 12, and an internal thread matched with the external thread is arranged on the direction-changing adjusting knob 13.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. An elbow grinding tool with an angularly adjustable tool bit, comprising:
an outer cutter tube assembly comprising an outer cutter tube body, a support sleeve and a first hinge mechanism arranged between the front end of the outer cutter tube body and the rear end of the support sleeve, the first hinge mechanism being used for enabling the support sleeve and the outer cutter tube body to rotate relative to each other around a first hinge rotating shaft;
the inner cutter bar component comprises an inner cutter bar main body arranged in the outer cutter bar main body in a penetrating mode, a cutter head arranged in the supporting sleeve in a penetrating mode and a second hinge mechanism arranged between the front end of the inner cutter bar main body and the rear end of the cutter head, and the second hinge mechanism is used for enabling the cutter head and the inner cutter bar main body to rotate relatively around a second hinge rotating shaft and transmitting torque;
the cutter is characterized in that the outer cutter tube main body is bent, the inner cutter bar main body is bent and matched with the outer cutter tube main body, and the cutter also comprises a turning control mechanism which is used for driving the support sleeve to rotate around the first hinge rotating shaft; the turning control mechanism comprises a turning control rod and a turning driving mechanism, the turning control rod is in a bent shape matched with the outer cutter tube main body, the turning control rod penetrates through the outer cutter tube main body and can move back and forth along the axial direction of the outer cutter tube main body, the turning control rod comprises a first curved control tube and a second linear control tube which are sequentially connected from front to back or from back to front, the first control tube and the second control tube are connected through a first movable connecting mechanism, the first movable connecting mechanism enables the first control tube and the second control tube to move relative to each other along the radial direction of the outer cutter tube main body, and the turning driving mechanism is used for driving the turning control rod to move back and forth along the axial direction of the outer cutter tube main body.
2. The angle pipe grinding tool with an angularly adjustable tool bit according to claim 1, wherein the first movable coupling mechanism includes a first stopper groove provided on the first control tube or the second control tube, and a first stopper pin provided on the second control tube or the first control tube and engaged with the first stopper groove, an end of the first stopper pin is inserted into the first stopper groove, and a gap is left between an end surface of an inserted end of the stopper pin and a bottom surface of the stopper groove.
3. The angle pipe grinding tool with an adjustable tool bit angle as claimed in claim 2, wherein the first control tube or the second control tube is provided with a first plug, the first plug is inserted into the second control tube or the first control tube, the first limit groove is provided on the first plug, and the first limit pin is provided on a tube wall of the second control tube or the first control tube.
4. The elbow grinding tool with an angularly adjustable tool bit according to claim 1, characterized in that an outer wall surface of a corner of the first control tube and/or an outer wall surface of a corner of the outer tool tube main body is provided with an avoidance groove.
5. The elbow grinding tool with the adjustable tool bit angle according to claim 1, wherein the direction-changing driving mechanism comprises a push-pull screw head, a direction-changing adjusting knob and a limiting mechanism, the push-pull screw head is fixed at the rear end of the first control pipe or the second control pipe, the direction-changing adjusting knob is sleeved on the push-pull screw head and is in threaded fit with the push-pull screw head, and the limiting mechanism is used for limiting the push-pull screw head to rotate.
6. The elbow grinding tool with the adjustable tool bit angle of claim 1, wherein the direction-changing control lever further comprises a connecting member disposed at a front end of the first control tube or the second control tube, a front end of the connecting member is hinged to a rear end of the support sleeve, a rear end of the connecting member is connected to a front end of the first control tube or the second control tube through a third movable connecting mechanism, and the third movable connecting mechanism enables the connecting member and the first control tube or the second control tube to rotate relatively.
7. The elbow grinding tool with adjustable tool bit angle of claim 1, further comprising a rotation adjusting mechanism, the rotation adjusting mechanism comprising an outer sleeve and a rotation driving mechanism, the outer sleeve is curved, the outer tool tube body is inserted into the outer sleeve and can rotate around the axis of the outer sleeve, and the rotation driving mechanism is used for driving the outer tool tube body to rotate relative to the outer sleeve.
8. The angle pipe grinding tool with adjustable tool bit angle of claim 7, wherein the outer tool tube main body comprises an outer tool tube front section, an outer tool tube rear section and a third rotary connection mechanism arranged between the outer tool tube front section and the outer tool tube rear section, the third rotary connection mechanism being used for transmitting torque.
9. The angle pipe grinding tool with an angularly adjustable tool bit according to claim 8, wherein the rotary drive mechanism includes a rotary adjustment knob connected to a rear end of the rear section of the outer tool tube.
10. The elbow grinding tool with the angle-adjustable tool bit according to claim 1, wherein the inner tool bar main body comprises an inner tool bar front section and an inner tool bar rear section which are sequentially connected from front to back, the rear end of the inner tool bar front section is connected with the front end of the inner tool bar rear section through a fourth rotary connecting mechanism, and the fourth rotary connecting mechanism is used for transmitting torque.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424447.1A CN113303864B (en) | 2020-06-30 | 2020-06-30 | Elbow pipe grinding tool with angle-adjustable tool bit |
| CN202010612412.6A CN111658062B (en) | 2020-06-30 | 2020-06-30 | Elbow pipe grinding tool with angle-adjustable tool bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010612412.6A CN111658062B (en) | 2020-06-30 | 2020-06-30 | Elbow pipe grinding tool with angle-adjustable tool bit |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110424447.1A Division CN113303864B (en) | 2020-06-30 | 2020-06-30 | Elbow pipe grinding tool with angle-adjustable tool bit |
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| CN111658062A CN111658062A (en) | 2020-09-15 |
| CN111658062B true CN111658062B (en) | 2021-06-04 |
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| CN202010612412.6A Active CN111658062B (en) | 2020-06-30 | 2020-06-30 | Elbow pipe grinding tool with angle-adjustable tool bit |
| CN202110424447.1A Active CN113303864B (en) | 2020-06-30 | 2020-06-30 | Elbow pipe grinding tool with angle-adjustable tool bit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113456164B (en) * | 2021-06-30 | 2023-04-25 | 重庆西山科技股份有限公司 | Direction-changing grinding tool with bending part and compound surgical instrument |
| CN117562627B (en) * | 2024-01-15 | 2024-04-19 | 诺美伊创医疗科技(成都)有限公司 | Rotary cutting surgical knife |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN113303864B (en) | 2023-03-14 |
| CN113303864A (en) | 2021-08-27 |
| CN111658062A (en) | 2020-09-15 |
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