CN109223097A - Guide the medical grinding knife tool of engagement - Google Patents
Guide the medical grinding knife tool of engagement Download PDFInfo
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- CN109223097A CN109223097A CN201811449405.8A CN201811449405A CN109223097A CN 109223097 A CN109223097 A CN 109223097A CN 201811449405 A CN201811449405 A CN 201811449405A CN 109223097 A CN109223097 A CN 109223097A
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- spline
- connection handle
- guidance
- actuating sleeve
- knife tool
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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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B2017/00367—Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
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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
- A61B17/56—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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- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention relates to a kind of medical grinding knife tool of guidance engagement, the medical grinding knife tool of the guidance engagement includes bistrique, knife tube assembly, connector sleeve, actuating sleeve, reciprocal actuator, connection handle；The knife tube assembly distal end articulated bistrique；The knife tube assembly front end is installed by bistrique；The rear end of the knife tube assembly is installed by connector sleeve；The periphery of the connector sleeve is installed by actuating sleeve；The outer peripheral surface of described connection handle docking actuating sleeve one end installs reciprocal actuator；The connection handle establishes connection by guidance engaging mechanism and actuating sleeve.Connection handle establishes connection by guidance engaging mechanism and actuating sleeve, by guiding engaging mechanism, is easy to align with so that connection handle and actuating sleeve are staggered when retracting, with guiding function, Caton is prevented, simultaneously, in cutter at high speeds rotary course, connection handle and actuating sleeve is avoided sliding problem occur.
Description
Technical field
The present invention relates to the field of medical instrument technology, specifically, being a kind of medical grinding knife tool of guidance engagement.
Background technique
During carrying out bone surgery, need to be ground internal bone tissue sometimes, in order to adapt to operation demand, grinding
Cutter is in continuous update and improves.Existing grinding knife tool has been provided with makes bistrique realization longitudinal and circumferential in the course of surgery
The function that position is adjusted has well adapting to property and accuracy for operative site, can be improved procedure efficiency, after desmopyknosis
Restore the period, reduces treatment cost while mitigating patient suffering；And cutter Whole-dismountable, structure is simple, and transmission chain is short,
It is easy to stability contorting, procedure efficiency is high.But there are still following defect and deficiencies in actual use:
Such as patent CN104605913B, patent name are as follows: medical grinding knife tool is set in connection handle front end in this configuration
End face spline is set, meanwhile, actuating sleeve tail end is also equipped with end face spline, can when actuating sleeve slides axially under outer power drive
Make both ends of the surface spline engagement or separation, reaching keeps actuating sleeve relatively fixed or rotatable state；When both ends of the surface spline separates
When, can manual actuation actuating sleeve rotate and connector sleeve driven to rotate, to drive the rotation of outer knife pipe, revolve so that bistrique is realized,
In conjunction with the rotation and pitching movement of bistrique, gimbal function is realized.
In the structure of above patent document, in order to reduce the cost, substituted using the connection handle and actuating sleeve of plastic material
Metal material increases the width of spline tooth to improve the intensity of spline tooth, reduces the quantity of spline tooth.
However, there is new problem in use in the connection handle of plastic part: on the one hand, due to the width of spline tooth
Degree becomes larger, and the number of teeth tails off, so that connection handle and actuating sleeve are not easy to be aligned when retracting after being staggered, is easy to appear Caton, needs to spend
There is certain angle guidance engagement between key teeth；On the other hand, if angle is excessive, in cutter head high-speed rotation, mutually
The problem of actuating sleeve and connection handle of engagement are likely to occur sliding.
In conclusion need it is a kind of both can alignment when guarantee guiding, avoid the occurrence of Caton phenomenon, can also effectively prevent
The spin-ended medical grinding knife tool slipped when turning, and yet there are no report about this medical grinding knife tool.
Summary of the invention
The purpose of the present invention is aiming at the shortcomings in the prior art, provide it is a kind of both can alignment when guarantee guiding, keep away
Exempt from Caton phenomenon occur, the medical grinding knife tool slipped when rotation also can be effectively prevented.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of medical grinding knife tool of guidance engagement, the medical grinding knife tool of the guidance engagement include actuating sleeve, connection
Handle；The connection handle establishes connection by guidance engaging mechanism and actuating sleeve；The actuating sleeve slides axially along connection handle
And it is engaged with connection handle by guidance engaging mechanism and realizes circumferential limit or release；The guidance engaging mechanism includes connection
Handle spline, the connection handle spline are equipped with spline tooth, the angled distribution of the adjacent wall extended line of two neighboring spline tooth；Institute
There is Caton in order to prevent from being intermeshed between actuating sleeve and connection handle when actuating sleeve slides axially in the guidance engaging mechanism stated
Or it slips.
As a kind of perferred technical scheme, the end face of connection handle, connection handle spline is arranged in the connection handle spline
It is combined with actuating sleeve spline, actuating sleeve end face is arranged in the actuating sleeve spline.
As a kind of perferred technical scheme, there are six the spline tooth is total to.
As a kind of perferred technical scheme, the angle of the adjacent wall extended line of two neighboring spline tooth is 6 ° -10 °.
As a kind of perferred technical scheme, the guidance engaging mechanism is plastic part.
As a kind of perferred technical scheme, the angle of the adjacent wall extended line of two neighboring spline tooth be 6 ° or 8 ° or
10°。
As a kind of perferred technical scheme, the spline tooth outer end face of the connection handle is formed by lozenges, the wedge
There are two shape face is total, two lozenges are distributed at splayed, and pool arc arc in the outboard end of lozenges.
As a kind of perferred technical scheme, two neighboring spline teeth is at spline, and spline trench bottom is to face directly, and straight
Face and the side wall junction of spline are connected equipped with arcwall face transition.
As a kind of perferred technical scheme, it is described guidance engagement medical grinding knife tool further include bistrique, knife tube assembly,
Connector sleeve, actuating sleeve, reciprocal actuator, connection handle；The knife tube assembly distal end articulated bistrique；The knife tube assembly front end
Bistrique is installed；The rear end of the knife tube assembly is installed by connector sleeve；The periphery of the connector sleeve is installed by actuating sleeve；The company
The outer peripheral surface for connecing handle docking actuating sleeve one end installs reciprocal actuator.
As a kind of perferred technical scheme, the planform one of the planform of the actuating sleeve spline and spline housing
It causes.
The invention has the advantages that:
1, the medical grinding knife tool of guidance engagement of the invention, connection handle is established by guidance engaging mechanism and actuating sleeve to be connected
It connects, by guiding engaging mechanism, is easy to align with so that connection handle and actuating sleeve are staggered when retracting, there is guiding function, prevent out
Existing Caton, meanwhile, in cutter at high speeds rotary course, connection handle and actuating sleeve is avoided sliding problem occur.
2, the spline tooth of connection handle spline altogether there are six, the number of teeth design be need consider transmission intensity, diameter etc.
Factor design, in the present embodiment, spline tooth is designed to six, is conducive to engagement alignment.
3, the angled distribution of the adjacent wall extended line of two neighboring spline tooth, i.e., two neighboring spline tooth are formed by flower
Keyway is capable of forming angular guide surfaces, which has guidance engagement.
4, the angle of the adjacent wall extended line of two neighboring spline tooth is 6-10 °, which is according to engagement point
From performance, and many experiments such as guidance effect and design, under the angular distribution, guidance effect is best, it is other too small or
It crosses wide-angle and all has limitation, both can guarantee guiding in alignment in this way, slippage when rotation also can be effectively prevented is asked
Topic.
5, the spline tooth outer end face of connection handle spline be formed by lozenges, and lozenges altogether there are two, two wedge shapes
The distribution of face splayed, and arc is pooled in outer side.The design have the technical effect that when connection handle and actuating sleeve engagement when,
The engagement area between spline tooth can be reduced, only the form of line contact, avoids the form of face contact from bringing constraint, be conducive to
Guidance engagement.
6, for two neighboring spline teeth at spline, spline trench bottom is to face directly, and face directly and connect with the side wall of spline
Place is equipped with arcwall face transition and connects.The design method has the technical effect that spline trench bottom is to face directly, can be abundant with spline tooth
Contact, and connected using arcwall face transition, it can effectively avoid stress from concentrating and damage.
7, locking mechanism is prevented by screw thread, shape during being threaded into caused by avoiding because deforming after high-temperature sterilization
At stuck problem.
8, new rubber ring and groove interference fit is added to use, frictional force is circumferentially being provided, is preventing screw thread from loosening.
9, connection handle and actuating sleeve are all made of plastic part, and cost bottom, screw thread is formed by the way of Shooting Technique to be prevented from locking
Fast knot structure reduces difficulty of processing.
Detailed description of the invention
Attached drawing 1 is the structural schematic diagram of the medical grinding knife tool of guidance engagement of the invention.
Attached drawing 2 is the structural schematic diagram of connection handle.
Attached drawing 3 is the partial enlargement structural representation of spline.
Attached drawing 4 is the plane partial schematic diagram of spline.
Attached drawing 5 is the structural schematic diagram of the medical grinding knife tool in embodiment 2.
Attached drawing 6 is the structural schematic diagram of the medical grinding knife tool in embodiment 3.
Specific embodiment
It elaborates with reference to the accompanying drawing to specific embodiment provided by the invention.
Appended drawing reference involved in attached drawing and component part are as follows:
1. 2. knife tube assembly of bistrique
21. knife pipe in outer knife pipe 22.
3. 4. actuating sleeve of connector sleeve
5. reciprocal 51. anti-locking internal screw thread of actuator
6. 61. connection handle spline of connection handle
62. 63. spline of spline tooth
631. face 632. arcwall faces directly
633. lozenges, 64. anti-locking external screw thread
7. 8. bistrique of engaging mechanism is guided to install sheath
9. screw thread prevents 10. groove of locking mechanism
11. rubber ring
Embodiment 1
Fig. 1 is please referred to, Fig. 1 is the structural schematic diagram of the medical grinding knife tool of guidance engagement of the invention.A kind of guidance is nibbled
The medical grinding knife tool of the medical grinding knife tool closed, the guidance engagement includes bistrique 1, knife tube assembly 2, connector sleeve 3, actuating sleeve
4, reciprocal actuator 5, connection handle 6；The 2 distal end articulated bistrique 1 of knife tube assembly；It installs the rear end of the knife tube assembly 2
Connector sleeve 3；The periphery of the connector sleeve 3 is installed by actuating sleeve 4；One end of the actuating sleeve 4 is installed by reciprocal actuator 5；It is described
Connection handle 6 by guidance engaging mechanism 7 and actuating sleeve 4 establish connection；The actuating sleeve 4 slides axially simultaneously along connection handle 6
It is engaged with connection handle 6 by guidance engaging mechanism 7 and realizes circumferential limit or release；The guidance engaging mechanism 7 in order to
Actuating sleeve 4 prevents intermeshing between actuating sleeve 4 and connection handle 6 from Caton or slippage occur when sliding axially.
Referring to figure 2., Fig. 2 is the structural schematic diagram of connection handle 6.The guidance engaging mechanism 7 includes connection handle spline
61 and 4 spline of actuating sleeve；The end face of connection handle 6 is arranged in the connection handle spline 61, and 4 spline of actuating sleeve, which is arranged, to be driven
4 end faces of dynamic set, and connection handle spline 61 is matched with 4 spline of actuating sleeve；The spline tooth 62 of the connection handle spline 61 is shared
Six, and the angle of the adjacent wall extended line of two neighboring spline tooth 62 is 6 ° -10 °；The guidance engaging mechanism 7 is modeling
Materials and parts.
The height of the connection handle spline 61 is 2.5mm, diameter 9mm.The dimensions is rule of thumb to determine
Height and thickness, to ensure the stability and intensity of structure.
Referring to figure 3., Fig. 3 is the partial enlargement structural representation of spline 63.The spline tooth of the connection handle spline 61
62 outer end faces be formed by lozenges 633, and lozenges 633 altogether there are two, two lozenges 633 in splayed distribution, and
Camber is converged in the outboard end of lozenges 633.
Referring to figure 4., Fig. 4 is the plane partial schematic diagram of spline 63.Two neighboring spline tooth 62 forms spline 63,
63 bottom of spline is to face 631 directly, and face 631 directly and connect with the side wall junction of spline 63 equipped with 632 transition of arcwall face.
The embodiment it should be understood that
The bistrique 1 by can by driving pitching, rotation and revolution in a manner of be arranged；Pitching refers to relative to knife tube assembly 2
Axis rotation at an angle, rotation refers to the rotation that bistrique 1 is ground under driving, and revolution refers to entire bistrique 1
Axis around knife tube assembly 2 rotates, to achieve the purpose that universal grinding；The bistrique 1 can be adjusted to and knife tube assembly 2 when in use
Coaxially, it into adjusting pitching and revolution location as needed after working environment, and is ground.
Knife tube assembly 2 include outer knife pipe 21 and interior knife pipe 22, interior 22 inner sleeve of knife pipe on outer knife pipe 21, and with outer knife
Pipe 21 rotates coaxially；The 21 front end single-degree-of-freedom of outer knife pipe is hingedly equipped with bistrique installation sheath 8, and single-degree-of-freedom hingedly refers to two
The relative motion of person is confined to hinged rotation direction, and existing axis articulated structure can be used in hinged mode, due to this knot
Structure is more likely to tiny, therefore, directlys adopt and hinged groove is arranged on one component, and another component processing goes out to be cooperated with hinged groove
Shaft-like structure or radial symmetric chondritic；Circumferentially rotated be coupled of the bistrique 1 installs sheath 8 in bistrique,
The grinding sword of bistrique 1 extends anteriorly out bistrique installation sheath 8；Pitching motion is completed with rotary bistrique 1 using bistrique installation sheath 8；It is described
Bistrique installation 8 rear end of sheath forms single-degree-of-freedom in such a way that articulated joint and hinged groove are mutually embedded in outer 21 front end of knife pipe and hingedly ties
Structure.
Medical grinding knife tool in this implementation further includes reciprocal middleware (not shown), and reciprocal middleware front end is being ground
Connection bistrique installs sheath 8 in the hinged rotation direction of head installation sheath 8, general using articulated connection or elastic connection, for driving
Rotary bistrique installation sheath 8 rotates in rotation direction；Reciprocal middleware rear end can at least drive in axial direction with reciprocal actuator 5 matches
It closes, for driving reciprocal middleware to move back and forth, to realize the pitching movement of bistrique installation sheath 8, because bistrique 1 is mounted in bistrique
It installs in sheath 8, that is, is able to achieve the pitching movement of bistrique 1.
The connection handle 6 establishes connection by guidance engaging mechanism 7 and actuating sleeve 4, by guiding engaging mechanism 7, makes
It obtains connection handle 6 and actuating sleeve 4 is staggered when retracting and is easy to align with, there is guiding function, prevent Caton, meanwhile, in cutter height
In fast rotary course, connection handle 6 and actuating sleeve 4 is avoided sliding problem occur.
The guidance engaging mechanism 7 includes 4 spline of connection handle spline 61 and actuating sleeve；The connection handle spline 61 is set
It sets in the end face of connection handle 6, the end face of actuating sleeve 4, and connection handle spline 61 and actuating sleeve is arranged in 4 spline of actuating sleeve
4 splines match；When actuating sleeve 4 slides axially, connection handle spline 61 and 4 spline engagement of actuating sleeve or separation can be made, reached
Keep actuating sleeve 4 relatively fixed or can be rotated state, it, can manual actuation drive when connection handle spline 61 is separated with 4 spline of actuating sleeve
Dynamic set 4 rotates and connector sleeve 3 is driven to rotate, so that bistrique 1 realizes revolution, it is real in conjunction with the rotation and pitching movement of bistrique 1
Existing gimbal function.
There are six the spline tooth 62 of the connection handle spline 61 is total, number of teeth design is to need to consider transmission intensity, directly
The factor designs such as diameter size, in the present embodiment, spline tooth 62 is designed to six, is conducive to engagement alignment.In the prior art,
In order to obtain sufficient intensity, usually the width of tooth is become larger, the number of teeth tails off, and does not allow when retracting after causing two parts to be staggered in this way
Easily alignment.The planform of 4 spline of actuating sleeve is consistent with 61 shape of connection handle spline, and which is not described herein again.
The angled distribution of adjacent wall extended line of two neighboring spline tooth 62, i.e., two neighboring spline tooth 62 are formed by
Spline 63 is capable of forming angular guide surfaces, which has guidance engagement.And spline 63 in the prior art
Side wall surface be parallel surface, do not have guiding function, and be easy to appear Caton phenomenon.
The angle of the adjacent wall extended line of two neighboring spline tooth 62 is 6 ° -10 °, is according to engagement in the angular distribution
Separating property, and guide many experiments such as effect and design, under the angular distribution, guidance effect is best, other too small
Or cross wide-angle and all have limitation, it both can guarantee guiding in alignment in this way, slippage when rotation also can be effectively prevented
Problem.As a preference, the angle of the adjacent wall extended line of two neighboring spline tooth 62 is 6 ° or 8 ° or 10 °.
62 outer end face of spline tooth of the connection handle spline 61 is to be formed by lozenges 633, and lozenges 633 shares two
A, two lozenges 633 are distributed in splayed, and converge camber in the outboard end of lozenges 633.The technical effect of the design
It is: when connection handle 6 and actuating sleeve 4 engage, the engagement area between spline tooth 62 can be reduced, only the form of line contact,
It avoids the form of face contact from bringing constraint, is conducive to guidance engagement.
Two neighboring spline tooth 62 forms spline 63, and 63 bottom of spline is to face 631 directly, and face 631 and spline directly
63 side wall junction is connected equipped with 632 transition of arcwall face.The design method has the technical effect that 63 bottom of spline is to face directly
631, it can be come into full contact with spline tooth 62, and connected using 632 transition of arcwall face, stress can effectively be avoided to concentrate and damage
It is bad, and spline tooth in the prior art 62, in order to easy to process, the bottom of spline 63 is usually semi-circular design, so that spline
Tooth 62 has pore volume, is easy to slip.
Embodiment 2
Referring to figure 5., Fig. 5 is the structural schematic diagram of the medical grinding knife tool in embodiment 2.The present embodiment and embodiment 1
It is essentially identical, the difference is that, reciprocal actuator 5 and connection handle 6 in the present embodiment are plastic part, and reciprocal driving
There is screw thread to prevent locking mechanism 9 for part 5 and the cooperation of connection handle 6；The outer peripheral surface of the connection handle 6 is equipped with anti-locking external screw thread
64；The inner wall of the reciprocal actuator 5 is equipped with anti-locking internal screw thread；The anti-locking internal screw thread and connection handle 6 is prevented
Locked external screw thread 64, which matches, to be formed screw thread and prevents locking mechanism 9；The anti-locking external screw thread 64 and anti-locking internal screw thread 51
It is formed using Shooting Technique.
The embodiment is avoided and is made because deforming after high-temperature sterilization it should be understood that prevent locking mechanism 9 by screw thread
At be threaded into during stuck problem.
Embodiment 3
Fig. 6 is please referred to, Fig. 6 is the structural schematic diagram of the medical grinding knife tool in embodiment 3.The present embodiment and embodiment 1
It is essentially identical, the difference is that, when connection handle 6 and reciprocal actuator 5 in the present embodiment are linked and packed, on connection handle 6
Equipped with groove 10, and rubber ring 11, the rubber ring 11 and groove 10 are assembled in groove 10 and is installed using interference fit type.?
In the embodiment, new rubber ring 11 and the interference fit of groove 10 is added and uses, frictional force is circumferentially being provided, is preventing screw thread loose
It is de-.
A kind of medical grinding knife tool of guidance engagement of the invention, connection handle 6 pass through guidance engaging mechanism 7 and actuating sleeve 4
Connection is established, by guiding engaging mechanism 7, so that connection handle 6 and actuating sleeve 4 are staggered when retracting and are easy to align with, there is guidance to make
With, Caton is prevented, meanwhile, in cutter at high speeds rotary course, connection handle 6 and actuating sleeve 4 is avoided sliding problem occur；Even
Connect handle spline 61 spline tooth 62 altogether there are six, the number of teeth design be need consider transmission intensity, the factor designs such as diameter
, in the present embodiment, spline tooth 62 is designed to six, is conducive to engagement alignment；The adjacent wall of two neighboring spline tooth 62
The angled distribution of extended line, i.e., two neighboring spline tooth 62 are formed by spline 63 and are capable of forming angular guide surfaces, the inclination
Guide surface has guidance engagement；The angle of the adjacent wall extended line of two neighboring spline tooth 62 is 6-10 °, in the angle
Distribution is designed according to many experiments such as engagement separating property, and guidance effect are considered, under the angular distribution, guidance
Effect is best, and other too small or wide-angle excessively all has limitation, both can guarantee guiding in alignment in this way, can also be effective
Prevent slippage problem when rotation；What 62 outer end face of spline tooth of connection handle spline 61 was formed by lozenges 633, and lozenges
633 altogether there are two, two lozenges 633 are distributed at splayed, and pool arc in outer side.The technical effect of the design
It is: when connection handle 6 and actuating sleeve 4 engage, the engagement area between spline tooth 62 can be reduced, only the form of line contact,
It avoids the form of face contact from bringing constraint, is conducive to guidance engagement；Two neighboring spline tooth 62 forms spline 63, spline 63
Bottom is to face 631 directly, and face 631 directly and connect with the side wall junction of spline 63 equipped with 632 transition of arcwall face.The design method
Have the technical effect that 63 bottom of spline be face 631 directly, can be come into full contact with spline tooth 62, and use 632 transition of arcwall face
Connection can effectively avoid stress from concentrating and damage；Locking mechanism 9 is prevented by screw thread, is avoided because becoming after high-temperature sterilization
The stuck problem formed during being threaded into caused by shape；New rubber ring 11 and the interference fit of groove 10 is added to use,
It is circumferential that frictional force is provided, prevent screw thread from loosening；Connection handle 6 and actuating sleeve 4 are all made of plastic part, cost bottom, using Shooting Technique
Mode form screw thread and prevent locking structure, reduce difficulty of processing.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, under the premise of not departing from the method for the present invention, can also make several improvement and supplement, these are improved and supplement also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of medical grinding knife tool of guidance engagement, the medical grinding knife tool of the guidance engagement includes actuating sleeve, connection handle；
It is characterized in that, the connection handle establishes connection by guidance engaging mechanism and actuating sleeve；The actuating sleeve is along connection handle
It slides axially and is engaged with connection handle by guidance engaging mechanism and realize circumferential limit or release；The guidance engaging mechanism
Including connection handle spline, the connection handle spline is equipped with spline tooth, and the adjacent wall extended line of two neighboring spline tooth is in angle
Degree distribution；The guidance engaging mechanism when actuating sleeve slides axially in order to preventing from being intermeshed between actuating sleeve and connection handle
There is Caton or slippage.
2. the medical grinding knife tool of guidance engagement according to claim 1, which is characterized in that the connection handle spline is set
It sets in the end face of connection handle, connection handle spline fitted has actuating sleeve spline, and the actuating sleeve spline is arranged in actuating sleeve end face.
3. the medical grinding knife tool of guidance engagement according to claim 1, which is characterized in that the spline tooth shares six
It is a.
4. the medical grinding knife tool of guidance engagement according to claim 5, which is characterized in that the phase of two neighboring spline tooth
The angle of adjacent sidewall extension line is 6 ° -10 °.
5. the medical grinding knife tool of guidance engagement according to claim 1, which is characterized in that the guidance engaging mechanism
For plastic part.
6. the medical grinding knife tool of guidance engagement according to claim 3, which is characterized in that the phase of two neighboring spline tooth
The angle of adjacent sidewall extension line is 6 ° or 8 ° or 10 °.
7. the medical grinding knife tool of guidance engagement according to claim 6, which is characterized in that the spline tooth of the connection handle
Outer end face is formed by lozenges, the lozenges altogether there are two, two lozenges in splayed be distributed, and lozenges outside
Converge camber in side.
8. it is according to claim 4 guidance engagement medical grinding knife tool, which is characterized in that two neighboring spline teeth at
Spline, spline trench bottom are to face directly, and face directly and connect with the side wall junction of spline equipped with arcwall face transition.
9. the medical grinding knife tool of guidance engagement according to claim 1-8, which is characterized in that the guidance is nibbled
The medical grinding knife tool closed further includes bistrique, knife tube assembly, connector sleeve, actuating sleeve, reciprocal actuator, connection handle；The knife
Tube assembly distal end articulated bistrique；The knife tube assembly front end is installed by bistrique；The rear end of the knife tube assembly is installed by connector sleeve；
The periphery of the connector sleeve is installed by actuating sleeve；The reciprocal driving of outer peripheral surface installation of described connection handle docking actuating sleeve one end
Part.
10. the medical grinding knife tool of guidance engagement according to claim 2, which is characterized in that the actuating sleeve spline
Planform it is consistent with the planform of spline housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449405.8A CN109223097A (en) | 2018-11-30 | 2018-11-30 | Guide the medical grinding knife tool of engagement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811449405.8A CN109223097A (en) | 2018-11-30 | 2018-11-30 | Guide the medical grinding knife tool of engagement |
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| CN109223097A true CN109223097A (en) | 2019-01-18 |
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| CN201811449405.8A Pending CN109223097A (en) | 2018-11-30 | 2018-11-30 | Guide the medical grinding knife tool of engagement |
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