CN106333728A

CN106333728A - Grinding head of medical grinding cutter

Info

Publication number: CN106333728A
Application number: CN201610861087.0A
Authority: CN
Inventors: 郭毅军; 张金彬; 柳长风
Original assignee: Chongqing Xishan Science and Technology Co Ltd
Current assignee: Chongqing Xishan Science and Technology Co Ltd
Priority date: 2013-11-29
Filing date: 2013-12-03
Publication date: 2017-01-18
Anticipated expiration: 2033-12-03
Also published as: CN104605913B; CN107334507A; CN106333728B; CN104605913A8; CN106214214A; CN106214214B; CN106344108A; CN104605913A; CN106344108B; CN107334507B

Abstract

The invention discloses a grinding head of a medical grinding cutter. The grinding head is rotatably detachably installed at a grinding head mounting sheath in a matching manner along the circumferential direction, and a grinding edge of the grinding head forward extends out of the grinding head mounting sheath; the grinding head is provided with a grinding head handle, and the grinding head handle is sleeved with a grinding head handle sleeve in a single-degree-of-freedom rotating manner; an annular limiting groove is formed at the outer circle of the grinding head handle, and a limiting ring is embedded in the annular limiting groove in a rotating and matching manner; and the front end of the grinding head handle sleeve is provided with a limiting annular boss pushing against the grinding head mounting sheath. By adopting the structure of adopting the grinding head mounting sheath and combining the grinding handle sleeve, the limiting is performed by virtue of the limiting ring, so that the high speed rotation, installation and assembling of the grinding head are protected, and the structural compactness is guaranteed; the grinding head is simple in structure, convenient to machine, flexible in hinge rotation and easy to disassemble; and by adopting the structure, an axis of an outer cutter tube and a hinge axis are enabled to stay on a same plane. The grinding head is applicable to the grinding cutter in the field and can perform pitching movement; and the transmission chain is relatively short so as to facilitate the stable control, so that the surgical operation efficiency is improved.

Description

The bistrique of medical grinding knife tool

The present invention is entitled: medical grinding knife tool and drive component, and the applying date is: on December 3rd, 2013, application number For: the divisional application of the patent application of 201310641876.x.

Technical field

The present invention relates to a kind of medicine equipment, particularly to a kind of mill of the medical grinding knife tool of orthopaedic surgical procedure Head.

Background technology

During carrying out bone surgery, sometimes need to carry out grinding to internal bone tissue；In the prior art, grinding is general Rotated using power handle direct drive bistrique and carry out grinding.Due to directly driving bistrique by power handle, and bistrique stretches into people Internal portion；Form deeper operative site for deep, the control for bistrique is more difficult；Especially for grinding position , it is impossible to external force controls bistrique to change grinding position, flexible using not realizing, procedure efficiency is relatively low for difference.

In order to solve the above problems, occur in that a kind of flexible bistrique, carry out pitching motion by controlling bistrique, to adapt to The change at grinding position；The bistrique of this structure is attached being driven using universal joint, and structure and manufacturing process are complicated, and increase Add the radius of cutter, and the above-mentioned operation of orthopaedics has typically then required grinding knife tool entire outer diameter less, otherwise cutter then cannot Reach in operative site or surgical procedure and move interference.Meanwhile, in this structure, in order to realize between bistrique and interior knife pipe Elevating movement and rotate transmission while carry out, using the attachment structure of Universal-head, complex structure and control unstable；And should Structure only has pitching motion it is impossible to realize the adaptation operation after circumferencial direction grinding position changes, only by cutter and drive Fixed handle integrally turns to, using very inconvenient；And, it drives the actuator of pitching also more original, affects the compact of cutter Property.

Accordingly, it would be desirable to a kind of bistrique of medical grinding knife tool, in surgical procedure, operative site is had preferably suitable Ying Xing, has a preferable accuracy, improves surgical procedure efficiency, shortens the post-operative recovery cycle, mitigate patient painful while Reduce treatment cost；And Whole-dismountable, structure is simple, driving-chain short it is easy to stability contorting, improve the efficiency of operation.

Content of the invention

In view of this, the present invention provides a kind of bistrique of medical grinding knife tool and drive component, in surgical procedure, can Make bistrique realize the longitudinally position adjustments with circumference, for operative site, there is well adapting to property, there is preferable accuracy, Improve surgical procedure efficiency, shorten the post-operative recovery cycle, mitigate patient painful while reduction treatment cost；And entirety can Dismounting, structure is simple, driving-chain short it is easy to stability contorting, improve the efficiency of operation.

The bistrique of the medical grinding knife tool of the present invention, along the circumferential direction single-degree-of-freedom is rotatably assorted detachable installation bistrique In a bistrique, sheath is installed, the grinding sword of bistrique extends anteriorly out bistrique and installs sheath；Described bistrique is provided with grinding-head handle, and grinding-head handle list is certainly It is rotatably assorted by degree and be cased with grinding-head handle set outward；Described grinding-head handle is cylindrical to be provided with annular spacing groove, is rotatably assorted in annular spacing groove It is embedded with for making bistrique and bistrique install the spacing ring that sheath and bistrique sleeve single-degree-of-freedom are rotatably assorted.

Further, described spacing ring radially protrudes from grinding-head handle periphery and is provided with restriction protrusion, described grinding-head handle Set is correspondingly provided with, with restriction protrusion, the slotted eye being directed radially through for restriction protrusion.

Further, described bistrique installation sheath leading portion is provided with the shaft orientation opening groove for making restriction protrusion snap in vertically, with The bistrique installation cylindrical single-degree-of-freedom of sheath leading portion is rotatably assorted and is provided with block ring, and this block ring installs the axially open of sheath with bistrique Groove is correspondingly provided with opening, and after described grinding-head handle installs bistrique installation sheath, this block ring rotates makes its opening install sheath with bistrique Shaft orientation opening groove stagger.

Further, described block ring is rotatably assorted with the bistrique installation cylindrical single-degree-of-freedom of sheath leading portion and is installed before sheath by bistrique Section cylindrical be provided with for make block ring embed cannelure realize.

Further, described bistrique sleeve front end is provided with for installing, with bistrique, the spacing annular boss that sheath offsets.

Further, described bistrique sleeve is radially symmetrically integrally formed and forms two flaps extending axially rearward；Two It is symmetrical that flap installs the hinged rotation direction of sheath with respect to bistrique.

Beneficial effects of the present invention: the bistrique of medical grinding knife tool of the present invention and drive component, the present invention adopts bistrique Sheath is installed and combines the structure of bistrique sleeve, carried out by spacing ring spacing, profit runs up, installs and fills with protection bistrique Join, beneficial to the compactedness ensureing structure；And structure is simple, easy to process, hinged rotation is flexibly it is easy to dismantle；This structure makes Outer knife pipe axis and hinge axes are in same plane it is adaptable to the grinding knife tool of this area, can carry out elevating movement, driving-chain Shorter, beneficial to stability contorting, thus improving procedure efficiency；During use, bistrique can be carried out pitching and circumferential position all can be adjusted The structure of section combines it is achieved that the universal orientation of bistrique is adjusted, and in surgical procedure, can make bistrique according to orientation of operation Change and realize the longitudinally position adjustments with circumference, for operative site, there is well adapting to property, there is preferable accuracy, carry High operation process efficiency, shortens the post-operative recovery cycle, mitigate patient painful while reduction treatment cost.

Brief description

The invention will be further described with reference to the accompanying drawings and examples.

Fig. 1 is the structural representation of the present invention；

Fig. 2 is leading portion sectional view of the present invention；

Fig. 3 is back segment sectional view of the present invention；

Fig. 4 is grinding wheel head structure figure；

Fig. 5 is enlarged drawing at Fig. 1 a；

Fig. 6 is that bistrique is intended to interior knife pipe radial type.

Specific embodiment

Fig. 1 is the structural representation of the present invention, and Fig. 2 is leading portion sectional view of the present invention, and Fig. 3 is back segment sectional view of the present invention, Fig. 4 is grinding wheel head structure figure, and Fig. 5 is enlarged drawing at Fig. 1 a, and Fig. 6 is that bistrique is intended to interior knife pipe radial type, as shown in the figure: this enforcement Example medical grinding knife tool bistrique, for being installed on the bistrique 1 of knife tube assembly front end, described bistrique 1 with can by drive pitching, from Turn and the mode of revolution is arranged；Pitching refers to that, with respect to the rotation at an angle of the axis of knife tube assembly, rotation refers to bistrique Carry out the rotation of grinding under driving, revolution refers to that whole bistrique rotates around the axis of knife tube assembly, to reach universal grinding Purpose；This bistrique use when can be adjusted to coaxial with knife tube assembly, entrance working environment after adjust as needed pitching and Revolution location, and carry out grinding.

Knife tube assembly is included outer knife pipe 3 and rotates coaxially the interior knife being placed on outer knife pipe 3 in cooperation and being coordinated with bistrique 1 transmission Pipe 11；The hinged bistrique that is provided with of described outer knife pipe 3 front end single-degree-of-freedom installs sheath 4, and single-degree-of-freedom is hinged to refer to the relative of the two Motion is confined to hinged rotation direction, and hinged mode can adopt existing axle articulated structure, because this structure is more prone to In tiny, therefore, directly using setting hinged groove on one component, another component processing goes out the shaft-like knot with hinged groove cooperation Structure or the chondritic of radial symmetric；The circumferentially rotated cooperation of described bistrique is installed on bistrique and installs sheath 4, the mill of bistrique 1 Cut sword and extend anteriorly out bistrique installation sheath 4；Using bistrique, sheath 4 band rotary bistrique 1 is installed and completes pitching motion；Described bistrique installs sheath 4 rear ends and outer knife pipe front end form single-degree-of-freedom articulated structure in the way of articulated joint and hinged groove are mutually embedded, as illustrated, Described outer knife pipe 3 tube wall front end face diametrically forms two arc hinge joint 3a, and bistrique installs the sheath wall breech face of sheath 4 radially Relatively formed two be used for making two arc hinge joint 3a be correspondingly embedded in and formed single-degree-of-freedom articulated structure arc hinge Access slot 4a；Structure is simple, easy to process, and hinged rotation flexibly, and is readily disassembled；This structure makes outer knife pipe axis and jointed shaft Line is in same plane, and motion is flexibly.

Also include for drive bistrique to install pitching drive component that sheath 4 rotates along hinged direction and be used for driving outer knife pipe Circumferentially rotated direction drive component；Using two frees degree of pitching and circumference, combination forms multiple directions Working condition.

In the present embodiment, the mode that described bistrique 1 tail end is driven in circumferencial direction is articulated with interior knife pipe 11 and this hinged knot In structure, bistrique 1 has axial activity surplus with respect to interior knife pipe 11；Hinged in circumferencial direction transmission refers to the relative of the two Motion is confined to hinged rotation direction, due to having axial surplus, makes bistrique 1 have four sides with respect to interior knife pipe 11 To the possible of off-axis inclination so that bending or broken line transmission are possibly realized.

In the present embodiment, described bistrique 1 tail end forms axle shape articulated section 1e, and interior knife pipe 11 front end forms axial end portion opening Hinged groove 13a, described axle shape articulated section 11 is embedded in hinged groove by the opening of hinged groove；More than presence activity therebetween Amount, in the transmission process that bistrique is installed when sheath 4 forms pitching with rotary bistrique 1, the axle shape articulated section 1e of bistrique 1 has enough Tilting action space, drives beneficial to the rotation after pitching.

In the present embodiment, described bistrique 1 is provided with grinding-head handle 1a, and described axle shape articulated section 1e is located at the tail end of grinding-head handle 1a； Described grinding-head handle 1a single-degree-of-freedom is placed on bistrique installation sheath 4 in being rotatably assorted, and the fit system that single-degree-of-freedom is rotatably assorted can be adopted With being capable of any mechanical system of this structure, including axial mechanical position limitation etc.；Using the structure of grinding-head handle 1a, beneficial to peace Dress and assembling, and beneficial to ensureing the compactedness of structure it is adaptable to this area.

In the present embodiment, the bistrique of medical grinding knife tool also includes connection handle 9, and described direction drive component includes and outer knife The co-axially fixed adapter sleeve 6 of pipe 3 and circumferencial direction fix the axially slidable actuating sleeve 7 being coated at adapter sleeve 6, outer knife pipe 3 Using being welded to connect and adapter sleeve 6 between, can be using the cooperation of the flat key of axial direction or spline between adapter sleeve 6 and actuating sleeve 7 Mode is realized, and will not be described here；Described actuating sleeve 7 is slid axially to be engaged with connection handle and realizes circumferential spacing or release； In this structure, end face spline can be set in connection handle 9 front end, meanwhile, actuating sleeve 7 tail end is also equipped with end face spline, works as driving Set 7 when external force driving axial slides, can make both ends of the surface spline engagement or separation, and reaching makes actuating sleeve 7 be relatively fixed or can The state rotating；When both ends of the surface spline separates, manual actuation actuating sleeve 7 can rotate and drive adapter sleeve 6 to rotate, thus driving Outer knife pipe 3 rotates so that bistrique 1 realizes revolution, the rotation in conjunction with bistrique 1 and elevating movement, realizes gimbal function；

Described pitching drive component includes reciprocal middleware 12 and reciprocal actuator 8, and described reciprocal middleware 12 front end exists Bistrique is installed and is connected bistrique in the hinged rotation direction of sheath 4 and install sheath 4, typically using being articulated and connected or elastic connection, is used for Drive bistrique that sheath 4 is installed to rotate in rotation direction；Reciprocal middleware 12 rear end and reciprocal actuator 8 at least axially can drive Cooperation, for driving reciprocal middleware to move back and forth, to realize the elevating movement that bistrique installs sheath；Described reciprocal actuator and company Connect handle by can moving axially relative in the way of coordinate, can be coordinated by screw thread or other move back and forth and can position at any time Fit system.

In the present embodiment, described actuating sleeve 7 is provided with pretightning force backward and this pretightning force makes actuating sleeve 7 and connection handle 9 Front end is close to and circumference engagement, and this pretightning force can be realized by spring or jump ring, realizes engagement using pretightning force, it is to avoid occur When maloperation or operation, de- extension problem occurs；As illustrated, actuating sleeve 7 inner circle forms spring cavity, a column spring 14 overcoat In adapter sleeve 6 and two ends respectively against the cylindrical formation of adapter sleeve the inner convex platform that formed of outer lug boss and actuating sleeve 7 inner circle；In reciprocal Between part 12 be intervalve between interior knife pipe 11 and outer knife pipe 3, described intervalve front end extends forward and is provided with bar shaped shell fragment 12a, described bistrique is installed sheath 4 and is also hinged with pitching pull bar 5 in hinge plane, and certainly, the hinged position of this pitching pull bar 5 should be able to Enough drive bistrique that sheath 4 is installed and realize elevating movement, will not be described here；This pitching pull bar 5 is axially fixed with bar shaped shell fragment 12a Connect, can be fixedly connected by the way of spot welding；Adapt to less radial direction position when bistrique installs sheath pitching using bar shaped shell fragment 12a Move, simple and compact for structure, it is to avoid the volume that labyrinth leads to increases it is ensured that performs the operation is smoothed out.

In the present embodiment, described grinding-head handle 1a single-degree-of-freedom be rotatably assorted outer be cased with grinding-head handle set 1b, the turning of single-degree-of-freedom Movable fit structure, can be realized using existing frame for movement, here is not arrogant to be repeated；Described bistrique sleeve 1b radially symmetrical Two flap 1b1 that body formed formation extends axially rearward, two flap 1b1 install the hinged rotation direction pair of sheath with respect to bistrique Claim；This flap structure is beneficial to increase bending part in grinding process and undertakes larger lateral moment of flexure, thus ensureing the suitable of operation Profit is carried out.

In the present embodiment, described interior knife pipe 11 front end is connected with middle pipe nipple 13, and described hinged groove 13a is opened in the middle of this Pipe nipple 13 front end, connection can be had well adapting to property, can be changed centre as needed using threaded or clamping etc. Pipe nipple 13, is used with the long period ensureing cutter；Described intervalve tail end axial restraint is connected with spacer shell 15, described spacer shell 15 cylindrical be provided with radial drive bar 15a, in the present embodiment, spacer shell and intervalve are welded to connect, spacer shell and radial drive bar one Body shapes；This radial drive bar is rotatably assorted with reciprocal actuator single-degree-of-freedom, simple and compact for structure, easy accessibility.

In the present embodiment, described reciprocal actuator 8 is to set female reciprocal actuating sleeve, its internal thread and connection handle 9 The external screw thread cooperation being provided with, by rotating reciprocal actuating sleeve and driving radial drive bar 15a to move back and forth, steady and accurate, keep away Exempt from pause and transition in rhythm or melody sense present in prior art, meanwhile, screw thread cooperation makes compact between all parts and integrality is good；Described driving Cover 7 back segments and be provided with necking down, the necking down that reciprocal actuating sleeve leading portion is coated at actuating sleeve 7 is cylindrical, reciprocal actuating sleeve leading portion inner circle is formed Step, the gland that this step passes through to connect forms cannelure, as illustrated, radial drive bar 15a is embedded in shape in this cannelure Become the rotatable fit structure of axial restraint circumference, certainly, radial drive bar 15a such as can be schemed with peripherally disposed multiple Shown two are symmetrical arranged and also more uniformly transmit driving force, due to radial drive bar be located at actuating sleeve and connection handle and Between reciprocal actuating sleeve, accordingly, it would be desirable to avoid the end face spline between actuating sleeve 7 and connection handle 9, to avoid motion artifacts；Past Multiple actuating sleeve back segment is coated at connection handle, as illustrated, reciprocal actuating sleeve back segment is coated at connection handle and screw thread cooperation, convenient Operation.

In the present embodiment, described grinding-head handle 1a is cylindrical to be provided with annular spacing groove, is rotatably assorted and is embedded with limit in annular spacing groove Position ring 1c, this spacing ring 1c radially protrude from grinding-head handle 1a periphery and are provided with restriction protrusion 1c1, described bistrique sleeve 1b It is correspondingly provided with the slotted eye being directed radially through for restriction protrusion 1c1 with restriction protrusion 1c1；Described bistrique is installed sheath 4 leading portion and is provided with For the shaft orientation opening groove 4a making restriction protrusion snap in vertically, as illustrated, installing the cylindrical list of sheath 4a leading portion freely with bistrique Degree is rotatably assorted and is provided with block ring 2, single-degree-of-freedom be rotatably assorted be by bistrique install sheath 4 leading portion cylindrical be provided be used for make to close The cannelure that lock ring embeds is realized；And the shaft orientation opening groove 4a that this block ring 2 installs sheath 4 with bistrique is correspondingly provided with opening, described After grinding-head handle 1a installs bistrique installation sheath 4, it is wrong that this block ring 2 rotates the shaft orientation opening groove making its opening and bistrique install sheath Open, now, restriction protrusion 1c1 is located at bistrique and installs between the shaft orientation opening groove 4a bottom land of sheath 4 and block ring 2 by axial limiting, When needing by overall for bistrique when bistrique installs taking-up sheath 4, blocks rotation ring 2 makes its opening that just bistrique is being installed with the axle of sheath 4 To open slot 4a, promote bistrique 1 and grinding-head handle 1a with external force, open slot 4a skids off vertically to make restriction protrusion 1c1, realizes tearing open Unload；Described bistrique sleeve 1b front end is provided with for installing, with bistrique, the spacing annular boss 1d that sheath 4 offsets, for limiting bistrique 1 The spacing entering is it is ensured that the normal operation of bistrique.

As illustrated, having axial activity surplus after described grinding-head handle 1a is hinged with middle pipe nipple 13, in figure defines Completely open type articulated structure, is directly embedded into hinged groove by axle shape articulated section and is formed, and have axial surplus, this surplus by The driving handle being fixedly connected with interior knife pipe 11 and the axial limiting of grinding-head handle 1a are realized；As illustrated, driving handle 10 front end face top The rear end face living connection handle 9 is realized to front limit, the ring of restriction protrusion 1c1 of spacing ring 1c of bistrique 1 and bistrique sleeve 1b Shape boss 1d is spacing backward to bistrique 1, is formed and has relative motion space between axle shape articulated section 1e and hinged groove bottom, to ensure After bending rotation drives；This structure eliminates the universal shaft structure of prior art it is achieved that subtracting of the compact and volume of structure Little, it is more suitable for depth and small space.

More than make the combination of all technical schemes in the present invention, jointly realize the purpose of the present invention；When actually used, bistrique Tail end is articulated with bistrique in interior knife pipe and this articulated structure in the mode that circumferencial direction is driven and has axial work with respect to interior knife pipe The structure of dynamic surplus can be applicable to needing elevating movement and driving in the structure rotating, it is, this structure can of any structure It is individually formed scheme and is applied in the cutter of the present invention, will not be described here；

Meanwhile, bistrique is installed on bistrique and installs the structure of sheath and is equally applicable to any need to drive bistrique to install sheath driving Bistrique pitching, revolution, in the structure of rotation, it is individually formed technical scheme, that is, this grinding knife tool includes knife tube assembly and is installed on The bistrique 1 of knife tube assembly front end, described bistrique 1 is arranged in the way of being driven pitching and rotation, and knife tube assembly includes outer knife Pipe 3 is placed on outer knife pipe 3 and the interior knife pipe 11 with bistrique 1 transmission cooperation with rotating coaxially in cooperation；Described outer knife pipe 3 front end is single certainly By spending the hinged bistrique that is provided with, sheath 4 is installed, the circumferentially rotated cooperation of bistrique 1 of grinding knife tool is detachable to be installed on bistrique peace Dress sheath 4, the grinding sword of bistrique 1 extends anteriorly out bistrique and installs sheath 4.Described bistrique is provided with grinding-head handle, and grinding-head handle single-degree-of-freedom turns Dynamic cooperation is outer to be cased with grinding-head handle set；Described grinding-head handle 1a is cylindrical to be provided with annular spacing groove, is rotatably assorted and is embedded with annular spacing groove Spacing ring 1c, this spacing ring 1c radially protrudes from grinding-head handle 1a periphery and is provided with restriction protrusion 1c1, described bistrique sleeve 1b and restriction protrusion 1c1 are correspondingly provided with the slotted eye being directed radially through for restriction protrusion 1c1；Described bistrique is installed sheath 4 leading portion and is set There is the shaft orientation opening groove 4a for making restriction protrusion snap in vertically, as illustrated, installing the cylindrical list of sheath 4a leading portion certainly with bistrique Be rotatably assorted by degree and be provided with block ring 2, single-degree-of-freedom be rotatably assorted be by bistrique install sheath 4 leading portion cylindrical be provided be used for make The cannelure that block ring embeds is realized；And the shaft orientation opening groove 4a that this block ring 2 installs sheath 4 with bistrique is correspondingly provided with opening, institute State grinding-head handle 1a and install after bistrique installs sheath 4, it is wrong that this block ring 2 rotates the shaft orientation opening groove making its opening and bistrique install sheath Open, now, restriction protrusion 1c1 is located at bistrique and installs between the shaft orientation opening groove 4a bottom land of sheath 4 and block ring 2 by axial limiting, When needing by overall for bistrique when bistrique installs taking-up sheath 4, blocks rotation ring 2 makes its opening that just bistrique is being installed with the axle of sheath 4 To open slot 4a, promote bistrique 1 and grinding-head handle 1a with external force, open slot 4a skids off vertically to make restriction protrusion 1c1, realizes tearing open Unload；Described bistrique sleeve 1b front end is provided with for installing, with bistrique, the spacing annular boss 1d that sheath 4 offsets, for limiting bistrique 1 The spacing entering is it is ensured that the normal operation of bistrique.

The invention also discloses a kind of bistrique of medical grinding knife tool, including knife tube assembly be installed on knife tube assembly front end Bistrique 1, described bistrique 1 arranges in the way of being driven pitching and rotation, and knife tube assembly includes outer knife pipe 3 and rotates coaxially It is placed on outer knife pipe 3 and the interior knife pipe 11 with bistrique 1 transmission cooperation in cooperation；Described outer knife pipe 3 front end single-degree-of-freedom is hinged to be provided with Bistrique installs sheath 4, and the detachable bistrique that is installed on of the circumferentially rotated cooperation of bistrique 1 of grinding knife tool installs sheath 4, bistrique 1 Grinding sword extend anteriorly out bistrique install sheath 4；Bistrique is installed sheath and is provided with for driving its pitching fortune in hinged rotation direction Dynamic reciprocal middleware 12, described reciprocal middleware 12 is connected by a bar shaped shell fragment 12a and drives bistrique to install sheath hinged Elevating movement in rotation direction；Reciprocal middleware 12 is the intervalve between interior knife pipe 11 and outer knife pipe 3, bar shaped shell fragment 12a is extended forward by described intervalve front end and is formed, and described bistrique is installed sheath 4 and is also hinged with pitching pull bar in hinged rotation direction 5, this pitching pull bar 5 is axially fixed with bar shaped shell fragment 12a and is connected, and can be fixed by the way of spot welding.

The invention also discloses a kind of bistrique of medical grinding knife tool, including knife tube assembly be installed on knife tube assembly front end Bistrique 1, described bistrique 1 arranges in the way of being driven pitching and rotation, the side also can be revolved round the sun by driving for the described bistrique 1 Formula is arranged；Described knife tube assembly include outer knife pipe 3 and rotating coaxially be placed in cooperation outer knife pipe 3 and with bistrique transmission cooperation in Knife pipe 11；The hinged bistrique that is provided with of described outer knife pipe 3 front end single-degree-of-freedom installs sheath 4, and the circumferentially rotated cooperation of bistrique 1 is installed In bistrique, sheath 4 is installed, the grinding sword of bistrique 1 extends anteriorly out bistrique and installs sheath；Described outer knife pipe 3 is provided with for driving it along circle The direction drive component that circumferential direction rotates.

The invention also discloses a kind of bistrique of medical grinding knife tool, including knife tube assembly be installed on knife tube assembly front end Bistrique 1, described bistrique 1 arranges in the way of being driven pitching and rotation, and described knife tube assembly includes outer knife pipe 3 and coaxial It is placed on outer knife pipe 3 and the interior knife pipe 11 with bistrique transmission cooperation, outer knife pipe 3 front end is provided with for installing bistrique 1 in being rotatably assorted And for the bistrique with rotary bistrique 1 elevating movement, sheath 4 is installed, described bistrique installs sheath 4 rear end with outer knife pipe 3 front end with articulated joint Mutually embedded mode forms single-degree-of-freedom articulated structure with hinged groove；Described outer knife pipe 3 tube wall front end face is diametrically formed Two arc hinge joint 3a, bistrique install sheath 4 sheath wall breech face diametrically formed two for correspondence make two arc hinges Joint 3a embeds the arc hinge access slot 4a of formed single-degree-of-freedom articulated structure.

Aforesaid pitching drive component and the principle of direction drive component, also all can form independent technical scheme, with For driving the pitching of bistrique and being not limited to the articulated structure of the present embodiment, and it is used for driving outer knife pipe to rotate to realize bistrique Revolution and be not limited to the present embodiment, that is, the invention also discloses a kind of for drive medical grinding knife tool bistrique change mill Cut the drive component in orientation, the pitching drive component including connection handle 9 with for driving the bistrique elevating movement of grinding knife tool, institute State pitching drive component and include reciprocal middleware 12 and reciprocal actuator 8, described reciprocal middleware 12 front end is with can driving The mode of bistrique 1 elevating movement of grinding knife tool connects bistrique 1, and reciprocal middleware 12 rear end and reciprocal actuator are at least in axial direction Cooperation can be driven, described reciprocal actuator and connection handle 9 by can moving axially relative in the way of coordinate；Also include direction driving group Part, described direction drive component includes the co-axially fixed adapter sleeve 6 of outer knife pipe 3 with grinding knife tool and in circumferencial direction fixing axle To the actuating sleeve 7 being slidably coated at adapter sleeve 6, described actuating sleeve 7 is slid axially and can be engaged with connection handle 9 or separate realization Circumference is spacing or discharges；Described actuating sleeve 7 is provided with pretightning force backward and this pretightning force makes actuating sleeve 7 and connection handle 9 front end It is close to and circumference engagement；Described reciprocal middleware 12 tail end axial restraint is connected with spacer shell 15, and described spacer shell 15 is cylindrical to be set There is radial drive bar 15a, this radial drive bar 15a is rotatably assorted with reciprocal actuator 8 single-degree-of-freedom；Described reciprocal actuator 8 For setting female reciprocal actuating sleeve, the external screw thread cooperation that its internal thread is provided with connection handle 9, by rotating reciprocal actuating sleeve And drive radial drive bar 15a to move back and forth, steady and accurate, it is to avoid pause and transition in rhythm or melody sense present in prior art, meanwhile, screw thread is joined Conjunction makes compact between all parts and integrality is good；Described actuating sleeve 7 back segment is provided with necking down, and reciprocal actuating sleeve leading portion is coated at The necking down of actuating sleeve 7 is cylindrical, and reciprocal actuating sleeve leading portion inner circle forms step, and the gland that this step passes through to connect forms cannelure, As illustrated, radial drive bar 15a is embedded in this cannelure forms the rotatable fit structure of axial restraint circumference, certainly, Radial drive bar 15a can be with peripherally disposed multiple, and two as depicted are symmetrical arranged also more uniform transmission and drive Power, because radial drive bar is located between actuating sleeve and connection handle and reciprocal actuating sleeve, accordingly, it would be desirable to avoid actuating sleeve 7 End face spline and connection handle 9 between, to avoid motion artifacts；Reciprocal actuating sleeve back segment is coated at connection handle, as illustrated, past Multiple actuating sleeve back segment is coated at connection handle and screw thread cooperation, convenient operation.

Finally illustrate, above example only in order to technical scheme to be described and unrestricted, although with reference to relatively Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention Art scheme is modified or equivalent, the objective without deviating from technical solution of the present invention and scope, and it all should be covered at this In the middle of the right of invention.

Claims

1. a kind of bistrique of medical grinding knife tool it is characterised in that: along the circumferential direction single-degree-of-freedom is rotatably assorted detachably bistrique Formula is installed on a bistrique and installs sheath, and the grinding sword of bistrique extends anteriorly out bistrique and installs sheath；Described bistrique is provided with grinding-head handle, bistrique Handle single-degree-of-freedom is cased with grinding-head handle set outside being rotatably assorted；Described grinding-head handle is cylindrical to be provided with annular spacing groove, turns in annular spacing groove Dynamic cooperation is embedded with for making bistrique and bistrique install the spacing ring that sheath and bistrique sleeve single-degree-of-freedom are rotatably assorted.

2. medical grinding knife tool according to claim 1 bistrique it is characterised in that: described spacing ring is radially convex It is provided with restriction protrusion for grinding-head handle periphery, described bistrique sleeve and restriction protrusion are correspondingly provided with for restriction protrusion radially The slotted eye passing through.

3. medical grinding knife tool according to claim 2 bistrique it is characterised in that: described bistrique is installed sheath leading portion and is provided with For the shaft orientation opening groove making restriction protrusion snap in vertically, it is rotatably assorted with the bistrique installation cylindrical single-degree-of-freedom of sheath leading portion and is provided with Block ring, and the shaft orientation opening groove that this block ring installs sheath with bistrique is correspondingly provided with opening, described grinding-head handle is installed into bistrique peace After dress sheath, this block ring rotates makes the shaft orientation opening groove that its opening installs sheath with bistrique stagger.

4. medical grinding knife tool according to claim 3 bistrique it is characterised in that: described block ring and bistrique install sheath The cylindrical single-degree-of-freedom of leading portion be rotatably assorted by bistrique install sheath leading portion cylindrical be provided with for make block ring embed cannelure Realize.

5. the medical grinding knife tool according to any one of Claims 1-4 bistrique it is characterised in that: described bistrique sleeve Front end is provided with for installing, with bistrique, the spacing annular boss that sheath offsets.

6. the medical grinding knife tool according to any one of Claims 1-4 bistrique it is characterised in that: described bistrique sleeve Radially symmetrically it is integrally formed and form two flaps extending axially rearward；Two flaps install the hinged rotation of sheath with respect to bistrique Direction is symmetrical.