CN206507999U - A kind of reamer for hip arthroplasty,acetabulum handle - Google Patents
A kind of reamer for hip arthroplasty,acetabulum handle Download PDFInfo
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- CN206507999U CN206507999U CN201621161305.1U CN201621161305U CN206507999U CN 206507999 U CN206507999 U CN 206507999U CN 201621161305 U CN201621161305 U CN 201621161305U CN 206507999 U CN206507999 U CN 206507999U
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- acetabulum
- reamer
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- hip arthroplasty
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- 210000001624 hip Anatomy 0.000 title claims abstract description 70
- 210000000588 acetabulum Anatomy 0.000 title claims abstract description 69
- 238000011882 arthroplasty Methods 0.000 title claims abstract description 69
- 230000007246 mechanism Effects 0.000 claims abstract description 88
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 19
- 239000011324 bead Substances 0.000 claims description 8
- 238000007142 ring opening reaction Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims 1
- 210000000527 greater trochanter Anatomy 0.000 abstract description 11
- 238000001356 surgical procedure Methods 0.000 description 10
- 208000027418 Wounds and injury Diseases 0.000 description 8
- 210000000988 bone and bone Anatomy 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 210000000689 upper leg Anatomy 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000011796 hollow space material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011540 hip replacement Methods 0.000 description 2
- 210000000845 cartilage Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000002391 femur head Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The utility model is related to medical instruments field, disclose a kind of reamer for hip arthroplasty,acetabulum handle, including retaining mechanism, handle casing and power shaft, the reamer for hip arthroplasty,acetabulum handle is Z-type structure, the alternate interior angle of the Z-type structure is right angle, the Z-type structure is divided into the first crosspiece, vertical section and the second crosspiece, formed at right angle corner of the vertical section with the formation of the second crosspiece and avoid space, the retaining mechanism constitutes the first crosspiece, the power shaft constitutes the second crosspiece, the reamer for hip arthroplasty,acetabulum handle also includes gear mechanism, the gear mechanism constitutes vertical section, the retaining mechanism, gear mechanism, power shaft is sequentially connected, the gear mechanism and at least part power shaft are arranged in handle casing, rotational power is transferred to retaining mechanism by the power shaft by gear mechanism.After the reamer for hip arthroplasty,acetabulum handle of Z-type structure causes reamer for hip arthroplasty,acetabulum in place, greater trochanter is located exactly between vertical section and the second crosspiece in the avoidance space at right angle corner, will not hinder the progress of operation, it is to avoid wound expands.
Description
Technical field
The utility model is related to medical instruments field, more particularly, to a kind of reamer for hip arthroplasty,acetabulum handle.
Background technology
Hip replacement refers to a kind of similar human body being made of biocompatibility and the metal material of satisfactory mechanical property
The prosthese of Bones and joints, the articular surface for being destroyed prosthetic replacement by disease or injury using operation method, the purpose is to cut
Except focus, pain is removed, recovers movable and original function in joint.Prosthetic replacement has joint motion preferably, can be early
Phase Go to ground activity, the advantages of reducing the complication of elderly patients' long-term bed.During hip replacement surgery, from acetabular bone
Take out femoral head, remove after the cartilage and bone being destroyed in acetabular bone, the shape of acetabular fossa need to be redressed with reamer for hip arthroplasty,acetabulum.It is existing
In technology, reamer for hip arthroplasty,acetabulum is generally straight structure, and occupies reamer for hip arthroplasty,acetabulum just by the greater trochanter of the femur toward post-tensioning in performing the operation and put
The path entered, this is accomplished by drawing it toward side, but because the muscle ratio of people is more flourishing, very big strength is needed when drawing,
And be likely to therefore increase wound size, cause to pull or fracture.There is front end that there is radian or inclination angle in the prior art
It can get around greater trochanter in the reamer for hip arthroplasty,acetabulum of degree, surgical procedure, reduce wound size, but still existing defects, or due to basket
There is certain angle to cause operation angle hardly possible to be held between file and handle, or annexation is unstable or complicated.Cause
This, it is necessary to reamer for hip arthroplasty,acetabulum handle of the prior art is improved.
Utility model content
The utility model is to overcome at least one described in above-mentioned prior art not enough there is provided one kind is simple in construction, effective
Avoid the reamer for hip arthroplasty,acetabulum handle that wound expands, angle of performing the operation easily is grasped.
In order to solve above-mentioned technical problem, the utility model uses following technical proposals：
A kind of reamer for hip arthroplasty,acetabulum handle, including retaining mechanism, handle casing and power shaft, the reamer for hip arthroplasty,acetabulum handle are Z-type knot
Structure, the alternate interior angle of the Z-type structure is right angle, and the Z-type structure is divided into the first crosspiece, vertical section and the second crosspiece, in vertical section and
Formed at the right angle corner of second crosspiece formation and avoid space, the retaining mechanism constitutes the first crosspiece, the power shaft structure
Into the second crosspiece, the reamer for hip arthroplasty,acetabulum handle also includes gear mechanism, and the gear mechanism constitutes vertical section, the retaining mechanism, tooth
Wheel mechanism, power shaft are sequentially connected, and the gear mechanism and at least part power shaft are arranged in handle casing, described dynamic
Rotational power is transferred to retaining mechanism by power rotating shaft by gear mechanism.
In the utility model, the structure of reamer for hip arthroplasty,acetabulum handle is the Z-type structure that alternate interior angle is right angle so that basket file central shaft with
Handle center's axle keeping parallelism, i.e. retaining mechanism central shaft are parallel with power shaft central shaft, are easy to preferably slap in surgical procedure
Hold the finishing that work angle carries out acetabular fossa.At the same time, formed and avoided at the right angle corner that vertical section is formed with the second crosspiece
Space, for avoiding greater trochanter, it is to avoid damage is caused during puling it toward side, the expansion of wound is prevented effectively from.In order to
This structure is realized, gear mechanism is provided with the vertical section of Z-type structure, realizes the transmission between power shaft and retaining mechanism,
And gear mechanism have compact conformation, reliable operation, stable drive, efficiency high, long lifespan, can guarantee that constant gearratio,
The advantages of power of transmission and big applicable velocity interval so that reamer for hip arthroplasty,acetabulum handle of the present utility model has excellent work steady
It is qualitative.Handle casing is used to position and fixed gear mechanism, while being easy to doctor to hold.
In surgical procedure, take out femoral head and by femur toward after post-tensioning, leave 3 ~ 4cm's between greater trochanter and acetabular bone
Cavity, is available for reamer for hip arthroplasty,acetabulum head to insert.It is smoothed out in order that reamer for hip arthroplasty,acetabulum can be inserted smoothly with surgical procedure, the vertical section
Longitudinal size is 3 ~ 5cm, and lateral dimension is 2 ~ 5cm.Reamer for hip arthroplasty,acetabulum in place after, greater trochanter is located exactly between vertical section and the second crosspiece directly
In the avoidance space of angle corner, the progress of operation will not be hindered.
General basket file is hemisphere face structure, and sphere dorsal part is provided with cross, and cross coordinates with retaining mechanism files basket admittedly
It is scheduled on reamer for hip arthroplasty,acetabulum handle, the retaining mechanism includes locking bed and is sheathed on the retaining ring of locking bed, the locking bed and lock
Tight ring is relatively rotated, it is ensured that basket file can be inserted or be removed retaining mechanism by rotational lock ring, the replacing and cleaning for being easy to basket to file.
Further, the locking bed includes pedestal and the short axle being connected with pedestal one end, and the reamer for hip arthroplasty,acetabulum handle is also wrapped
The clutch shaft bearing being arranged inside handle casing is included, the short axle is supported by clutch shaft bearing and is plugged in gear mechanism.The seat
Body coordinates for fixing basket file with retaining ring, and the short axle coordinates the rotational power for being transmitted power shaft to be transferred to gear
Basket is filed, and the clutch shaft bearing reduces the coefficient of friction in short axle motion process and ensures its rotating accuracy.
Further, the pedestal other end at least partially hollow structure, hollow space can accommodate cross center
Alternating share, side is provided with four 90 ° of uniform grooves at its opening, and side is provided with four 90 ° at the retaining ring opening
Uniform L-type groove, the vertical section height of the L-type groove is consistent with groove height, and the L-type groove indulges section width, crosspiece height and groove
Width is consistent, and the L-type groove crosspiece width is twice of recess width.When L-type groove, which indulges section, to be alignd with groove, cross can be put
Enter retaining mechanism, rotational lock ring makes cross-section alignd with groove of L-type groove cross can not be removed retaining mechanism, so as to reach
The purpose of fixed basket file.
Further, in order to avoid retaining ring spontaneously causes basket to file solid failure, the pedestal relative to locking bed rotation
Side is provided with spring top bead, and the retaining ring side is provided with through hole, the bullet when L-type groove crosspiece overlaps to form hole with groove
The spring decorative pearl on top of an official cap enter through hole, it is necessary to it is artificial impose power can rotational lock ring.
Further, the bottom portion of groove turning or L-type slot part turning have fillet, the diameter and groove of the fillet
Width is consistent.The design of fillet makes corner be not likely to produce stress cracking, is conducive to the life-span of too high retaining mechanism, and cross
The cross section of frame is circle, therefore the diameter positioning for being conducive to cross consistent with I type groove width of fillet.
In order to reduce the coefficient of friction in power shaft motion process and ensure its rotating accuracy, the reamer for hip arthroplasty,acetabulum handle is also
Including the second bearing being arranged inside handle casing, the second bearing supports power shaft.
In order to which power shaft is connected with driving equipment, the reamer for hip arthroplasty,acetabulum handle also includes connector, the connection
Head is connected with the power shaft other end, and driving equipment drives power shaft to rotate, and gear mechanism is by the rotational power of power shaft
Retaining mechanism is transferred to, and then drives the rotation of basket file and produces friction with acetabular fossa, so as to reach the purpose of finishing acetabular fossa, is made
It must be greatly reduced the time of repairing, moreover it is possible to ensure dressing accuracy, save strength.
It is described in order to ensure the alternate interior angle of Z-type structure for right angle while reducing the lateral dimension that Z-type structure indulges section as far as possible
Gear mechanism is made up of two spur gears being arranged in juxtaposition, and the central shaft of two spur gears is parallel to each other, it is ensured that retaining mechanism
The central shaft of central shaft and power shaft is parallel to each other, so as to ensure that the Z-type structure of reamer for hip arthroplasty,acetabulum handle.
The utility model reamer for hip arthroplasty,acetabulum handle has the advantages that compared with prior art：
1. it is prevented effectively from wound expansion.In the utility model, reamer for hip arthroplasty,acetabulum handle is Z-type structure, reamer for hip arthroplasty,acetabulum in place after, it is big to turn
Son is located exactly between vertical section and the second crosspiece in the avoidance space at right angle corner, will not be hindered the progress of operation, is prevented effectively from
The expansion of wound.
2. operation angle is easily grasped.In the utility model, the structure of reamer for hip arthroplasty,acetabulum handle is the Z-type knot that alternate interior angle is right angle
Structure so that the central shaft and handle center's axle keeping parallelism of basket file, is easy in surgical procedure preferably grasp work angle progress hip
The finishing of mortar nest.
3. it is simple in construction.Reamer for hip arthroplasty,acetabulum handle arrangement of the present utility model is simple, and Z-type structure just can be realized using gear drive
Reach and get around the purpose that greater trochanter reduces wound.
Brief description of the drawings
Fig. 1 is the reamer for hip arthroplasty,acetabulum handle arrangement schematic diagram of embodiment 1；
Fig. 2 is retaining mechanism decomposing schematic representation；
Fig. 3 is retaining mechanism installation diagram；
Fig. 4 is the reamer for hip arthroplasty,acetabulum handle arrangement schematic diagram of embodiment 2.
Description of reference numerals：Retaining mechanism 100, locking bed 110, pedestal 111, short axle 112, groove 113, spring top bead
114, retaining ring 120, L-type groove 121, through hole 122, handle casing 200, power shaft 300, gear mechanism 400, clutch shaft bearing
500, second bearing 600, connector 700.
Embodiment
Accompanying drawing being given for example only property explanation, it is impossible to be interpreted as the limitation to this patent；It is attached in order to more preferably illustrate the present embodiment
Scheme some parts to have omission, zoom in or out, do not represent the size of actual product；To those skilled in the art,
Some known features and its explanation may be omitted and will be understood by accompanying drawing；Described in accompanying drawing position relationship be used for be only used for
Exemplary illustration, it is impossible to be interpreted as the limitation to this patent.The utility model is done further in detail with reference to specific embodiment
Describe in detail bright.
Embodiment 1
As shown in figure 1, a kind of reamer for hip arthroplasty,acetabulum handle, including retaining mechanism 100, handle casing 200, power shaft 300 and tooth
Take turns mechanism 400, the reamer for hip arthroplasty,acetabulum handle is Z-type structure, the alternate interior angle of the Z-type structure is right angle, the Z-type structure is divided into the
One crosspiece a, vertical section b and the second crosspiece c, form at right angle corner of the vertical section with the formation of the second crosspiece and avoid space, the lock
Tight mechanism 100 constitutes the first crosspiece, and the power shaft 300 constitutes the second crosspiece, and the gear mechanism 400 constitutes vertical section, institute
State retaining mechanism 100, gear mechanism 400, power shaft 300 to be sequentially connected, the gear mechanism 400 and at least part power turn
Axle 300 is arranged in handle casing 200, and rotational power is transferred to locking machine by the power shaft 300 by gear mechanism 400
Structure 100.
Indulged described in the present embodiment in L-type structure of the structure of section for 90 ° of rotate counterclockwise, surgical procedure, take out femur
Head and by femur toward after post-tensioning, 3 ~ 4cm cavity is left between greater trochanter and acetabular bone, is available for reamer for hip arthroplasty,acetabulum head to insert.For
Enable reamer for hip arthroplasty,acetabulum smoothly to insert to be smoothed out with surgical procedure, the longitudinal size y of the vertical section is 5cm, lateral dimension x is
3cm.Reamer for hip arthroplasty,acetabulum in place after, greater trochanter is located exactly between vertical section and the second crosspiece in the avoidance space at right angle corner, Bu Huifang
The progress for art of being in the way.
General basket file is hemisphere face structure, and sphere dorsal part is provided with cross, and cross coordinates with retaining mechanism 100 files basket
It is fixed on reamer for hip arthroplasty,acetabulum handle, as shown in Fig. 2 the retaining mechanism 100 includes locking bed 110 and is sheathed on locking bed 110
Retaining ring 120, the locking bed 110 is relatively rotated with retaining ring 120, it is ensured that basket file can be inserted by rotational lock ring 120 or
Retaining mechanism 100 is removed, the replacing and cleaning for being easy to basket to file.The locking bed 110 include pedestal 111 and with the one end of pedestal 111
The short axle 112 of connection, the reamer for hip arthroplasty,acetabulum handle also includes being arranged at the clutch shaft bearing 500 inside handle casing 200, the short axle
112 are supported by clutch shaft bearing 500 and are plugged in gear mechanism 400.The pedestal 111 coordinates for fixing basket with retaining ring 120
File, the short axle 112 coordinates the rotational power for being transmitted power shaft 300 to be transferred to basket file, the clutch shaft bearing with gear
500 reduce the coefficient of friction in the motion process of short axle 112 and ensure its rotating accuracy.The other end of pedestal 111 at least portion
It is divided into hollow structure, hollow space can accommodate the alternating share at cross center, side is uniform provided with four 90 ° at its opening
Groove 113, side is provided with four 90 ° uniform L-type grooves 121 at the opening of retaining ring 120, and it is high that the L-type groove 121 indulges section
Degree is highly consistent with groove 113, and the L-type groove 121 indulges section width, crosspiece height, the L-type groove consistent with the width of groove 113
121 crosspiece width are twice of the width of groove 113.When L-type groove 121, which indulges section, to be alignd with groove 113, cross can insert locking
Mechanism 100, rotational lock ring 120 makes cross-section alignd with groove 113 of L-type groove 121 cross can not be removed retaining mechanism
100, so as to reach the purpose of fixed basket file.In order to avoid retaining ring 120 spontaneously causes basket file solid relative to the rotation of locking bed 110
Fixed failure, the side of pedestal 111 is provided with spring top bead 114, and the side of retaining ring 120 is provided with through hole 122, as shown in figure 3,
The crosspiece of L-type groove 121 when overlapping to form hole with groove 113 spring top bead 114 enter through hole 122, it is necessary to artificially impose
Power can rotational lock ring 120.The bottom corners of groove 113 or the section corner of L-type groove 121 have fillet, the fillet
Diameter it is consistent with the width of groove 113.The design of fillet makes corner be not likely to produce stress cracking, is conducive to too high retaining mechanism
100 life-span, and the cross section of cross is circle, therefore the diameter of fillet consistent with I type groove width is conducive to cross
Positioning.
In order to reduce the coefficient of friction in the motion process of power shaft 300 and ensure its rotating accuracy, the reamer for hip arthroplasty,acetabulum hand
Handle also includes being arranged at the second bearing 600 inside handle casing 200, and the second bearing 600 supports power shaft 300.
In order to which power shaft 300 and driving equipment are connected, the reamer for hip arthroplasty,acetabulum handle also includes connector 700, institute
State connector 700 to be connected with the other end of power shaft 300, driving equipment drives power shaft 300 to rotate, gear mechanism 400 will
The rotational power of power shaft 300 is transferred to retaining mechanism 100, and then drives the rotation of basket file and produce friction with acetabular fossa, from
And reaching the purpose of finishing acetabular fossa so that the finishing time is greatly reduced, moreover it is possible to ensure dressing accuracy, saves strength.
It is described in order to ensure the alternate interior angle of Z-type structure for right angle while reducing the lateral dimension that Z-type structure indulges section as far as possible
Gear mechanism 400 is made up of two spur gears being arranged in juxtaposition, and the central shaft of two spur gears is parallel to each other, it is ensured that retaining mechanism
The central shaft of 100 central shaft and power shaft 300 is parallel to each other, so as to ensure that the Z-type structure of reamer for hip arthroplasty,acetabulum handle.
Embodiment 2
As shown in figure 4, a kind of reamer for hip arthroplasty,acetabulum handle, including retaining mechanism 100, handle casing 200, power shaft 300 and tooth
Take turns mechanism 400, the reamer for hip arthroplasty,acetabulum handle is Z-type structure, the alternate interior angle of the Z-type structure is right angle, the Z-type structure is divided into the
One crosspiece a, vertical section b and the second crosspiece c, form at right angle corner of the vertical section with the formation of the second crosspiece and avoid space, the lock
Tight mechanism 100 constitutes the first crosspiece, and the power shaft 300 constitutes the second crosspiece, and the gear mechanism 400 constitutes vertical section, institute
State retaining mechanism 100, gear mechanism 400, power shaft 300 to be sequentially connected, the gear mechanism 400 and at least part power turn
Axle 300 is arranged in handle casing 200, and rotational power is transferred to locking machine by the power shaft 300 by gear mechanism 400
Structure 100.
The structure that section is indulged described in the present embodiment is I type structures, in surgical procedure, takes out femoral head and by femur toward post-tensioning
Afterwards, 3 ~ 4cm cavity is left between greater trochanter and acetabular bone, is available for reamer for hip arthroplasty,acetabulum head to insert.In order that reamer for hip arthroplasty,acetabulum can be smoothly
Insert and be smoothed out with surgical procedure, the longitudinal size y of the vertical section is 4cm, and lateral dimension x is 2cm.Reamer for hip arthroplasty,acetabulum is in place
Afterwards, greater trochanter is located exactly between vertical section and the second crosspiece in the avoidance space at right angle corner, will not hinder the progress of operation.
General basket file is hemisphere face structure, and sphere dorsal part is provided with cross, and cross coordinates with retaining mechanism 100 files basket
It is fixed on reamer for hip arthroplasty,acetabulum handle, the retaining mechanism 100 includes locking bed and is sheathed on the retaining ring of locking bed, the locking bed
Relatively rotated with retaining ring, it is ensured that basket file can be inserted or be removed retaining mechanism 100 by rotational lock ring, the replacing for being easy to basket to file
And cleaning.The locking bed includes pedestal and the short axle being connected with pedestal one end, and the reamer for hip arthroplasty,acetabulum handle also includes being arranged at hand
Clutch shaft bearing 500 inside handle shell 200, the short axle is supported by clutch shaft bearing 500 and is plugged in gear mechanism 400.It is described
Pedestal coordinates for fixing basket file with retaining ring, and the short axle coordinates the rotational power for being transmitted power shaft 300 with gear
Basket file is transferred to, the clutch shaft bearing 500 reduces the coefficient of friction in short axle motion process and ensures its rotating accuracy.It is described
The pedestal other end at least partially hollow structure, hollow space can accommodate the alternating share at cross center, side at its opening
Face is provided with side at four 90 ° of uniform grooves, the retaining ring opening and is provided with four 90 ° uniform L-type grooves, the L-type groove
Vertical section height is consistent with groove height, and the L-type groove indulges section width, crosspiece height, the L-type groove crosspiece consistent with recess width
Width is twice of recess width.When L-type groove, which indulges section, to be alignd with groove, cross can insert retaining mechanism 100, rotational lock
Ring makes cross-section alignd with groove of L-type groove cross can not be removed retaining mechanism 100, so as to reach the purpose of fixed basket file.
In order to avoid retaining ring spontaneously causes basket to file solid failure relative to locking bed rotation, the pedestal side is provided with spring top bead,
The retaining ring side is provided with through hole, and the spring top bead enters through hole when the L-type groove crosspiece overlaps to form hole with groove, needs
Very important person can rotational lock ring to impose power.The bottom portion of groove turning or L-type slot part turning have fillet, the fillet
Diameter it is consistent with recess width.The design of fillet makes corner be not likely to produce stress cracking, is conducive to too high retaining mechanism 100
Life-span, and the cross section of cross is circle, therefore the diameter of fillet consistent with I type groove width is conducive to determining for cross
Position.
In order to reduce the coefficient of friction in the motion process of power shaft 300 and ensure its rotating accuracy, the reamer for hip arthroplasty,acetabulum hand
Handle also includes being arranged at the second bearing 600 inside handle casing 200, and the second bearing 600 supports power shaft 300.
In order to which power shaft 300 and driving equipment are connected, the reamer for hip arthroplasty,acetabulum handle also includes connector 700, institute
State connector 700 to be connected with the other end of power shaft 300, driving equipment drives power shaft 300 to rotate, gear mechanism 400 will
The rotational power of power shaft 300 is transferred to retaining mechanism 100, and then drives the rotation of basket file and produce friction with acetabular fossa, from
And reaching the purpose of finishing acetabular fossa so that the finishing time is greatly reduced, moreover it is possible to ensure dressing accuracy, saves strength.
It is described in order to ensure the alternate interior angle of Z-type structure for right angle while reducing the lateral dimension that Z-type structure indulges section as far as possible
Gear mechanism 400 is made up of two spur gears being arranged in juxtaposition, and the central shaft of two spur gears is parallel to each other, it is ensured that retaining mechanism
The central shaft of 100 central shaft and power shaft 300 is parallel to each other, so as to ensure that the Z-type structure of reamer for hip arthroplasty,acetabulum handle.
Obviously, above-described embodiment of the present utility model is only intended to clearly illustrate the utility model example, and
It is not the restriction to embodiment of the present utility model.For those of ordinary skill in the field, in described above
On the basis of can also make other changes in different forms.There is no need and unable to give all embodiments
It is exhaustive.All any modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc., should be included in
Within the utility model scope of the claims.
Claims (10)
1. a kind of reamer for hip arthroplasty,acetabulum handle, including retaining mechanism, handle casing and power shaft, it is characterised in that the reamer for hip arthroplasty,acetabulum hand
Handle is Z-type structure, and the alternate interior angle of the Z-type structure is right angle, and the Z-type structure is divided into the first crosspiece, vertical section and the second crosspiece,
Formed at right angle corner of the vertical section with the formation of the second crosspiece and avoid space, the retaining mechanism constitutes the first crosspiece, described dynamic
Power rotating shaft constitutes the second crosspiece, and the reamer for hip arthroplasty,acetabulum handle also includes gear mechanism, and the gear mechanism constitutes vertical section, the locking
Mechanism, gear mechanism, power shaft are sequentially connected, and the gear mechanism and at least part power shaft are arranged at handle casing
Interior, rotational power is transferred to retaining mechanism by the power shaft by gear mechanism.
2. reamer for hip arthroplasty,acetabulum handle according to claim 1, it is characterised in that the longitudinal size of the vertical section is 3 ~ 5cm, laterally
Size is 2 ~ 5cm.
3. reamer for hip arthroplasty,acetabulum handle according to claim 1, it is characterised in that the retaining mechanism includes locking bed and is sheathed on
The retaining ring of locking bed, the locking bed is relatively rotated with retaining ring.
4. reamer for hip arthroplasty,acetabulum handle according to claim 3, it is characterised in that the locking bed include pedestal and with pedestal one end
The short axle of connection, the reamer for hip arthroplasty,acetabulum handle also includes being arranged at the clutch shaft bearing inside handle casing, and the short axle is by first axle
Hold and support and be plugged in gear mechanism.
5. reamer for hip arthroplasty,acetabulum handle according to claim 4, it is characterised in that at least partially hollow knot of the pedestal other end
Side is provided with side at four 90 ° of uniform grooves, the retaining ring opening and is provided with four 90 ° of uniform L-types at structure, its opening
Groove, the vertical section height of the L-type groove is consistent with groove height, and the vertical section width of the L-type groove, crosspiece height are consistent with recess width,
The L-type groove crosspiece width is twice of recess width.
6. reamer for hip arthroplasty,acetabulum handle according to claim 5, it is characterised in that the pedestal side is provided with spring top bead, described
Retaining ring side is provided with through hole, and the spring top bead enters through hole when the L-type groove crosspiece overlaps to form hole with groove.
7. reamer for hip arthroplasty,acetabulum handle according to claim 6, it is characterised in that the bottom portion of groove turning or L-type slot part are turned
Angle has fillet, and the diameter of the fillet is consistent with recess width.
8. reamer for hip arthroplasty,acetabulum handle according to claim 1, it is characterised in that the reamer for hip arthroplasty,acetabulum handle also includes being arranged at handle
The second bearing of enclosure, the second bearing supports power shaft.
9. reamer for hip arthroplasty,acetabulum handle according to claim 1, it is characterised in that the reamer for hip arthroplasty,acetabulum handle also includes connector, institute
Connector is stated to be connected with the power shaft other end.
10. the reamer for hip arthroplasty,acetabulum handle according to any one of claim 1 ~ 9, it is characterised in that the gear mechanism is by cloth arranged side by side
Two gears put are constituted, and the central shaft of two spur gears is parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161305.1U CN206507999U (en) | 2016-10-25 | 2016-10-25 | A kind of reamer for hip arthroplasty,acetabulum handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621161305.1U CN206507999U (en) | 2016-10-25 | 2016-10-25 | A kind of reamer for hip arthroplasty,acetabulum handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206507999U true CN206507999U (en) | 2017-09-22 |
Family
ID=59860550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621161305.1U Active CN206507999U (en) | 2016-10-25 | 2016-10-25 | A kind of reamer for hip arthroplasty,acetabulum handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206507999U (en) |
-
2016
- 2016-10-25 CN CN201621161305.1U patent/CN206507999U/en active Active
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