CN208481412U - A kind of variable diameter reamer for hip arthroplasty,acetabulum - Google Patents
A kind of variable diameter reamer for hip arthroplasty,acetabulum Download PDFInfo
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- CN208481412U CN208481412U CN201721512068.3U CN201721512068U CN208481412U CN 208481412 U CN208481412 U CN 208481412U CN 201721512068 U CN201721512068 U CN 201721512068U CN 208481412 U CN208481412 U CN 208481412U
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- knife bar
- hip arthroplasty
- acetabulum
- blade
- variable diameter
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Abstract
The utility model relates to a kind of variable diameter reamer for hip arthroplasty,acetabulum, including knife bar and it is set to the tool apron of knife bar lower end, multiple side blades are shown by axle center circular array of knife bar on the tool apron, sliding shoe is slidably provided on the knife bar, the sliding shoe is flexibly connected by connecting rod with side blade, the connecting rod and side blade correspond, the sliding shoe side is provided with adjustable lock screw, the tool apron bottom is at least opened along its rotation direction there are two lower blade, and the side blade offers side tool sword along the sagittal plane of knife bar rotation direction.Operating time and doctor's operating burden can be reduced into acetabulum reconstruction operating procedure is completed in vivo primary, reduced because decentraction caused by replacing reamer for hip arthroplasty,acetabulum is not coaxial and tissue damage.
Description
Technical field
The utility model relates to field of medical equipment, and in particular to a kind of variable diameter reamer for hip arthroplasty,acetabulum.
Background technique
Reamer for hip arthroplasty,acetabulum is the operation tool that acetabular fossa indispensability is handled in hip replacement surgery, and main cutting object is acetabular bone
Cartilage and a small amount of subchondral bone.During surgery, cutter hub diameter is selected to compare acetabular bone according to the size for speculating acetabular bone according to patient's X-ray
The reamer for hip arthroplasty,acetabulum of the small 4mm of size carries out acetabulum reconstruction.Through the dry cutting tooth on reamer for hip arthroplasty,acetabulum surface under certain pressure action condition
Slow-speed of revolution campaign cuts off the necrotic tissue at patient's hip joint, and the land on top simultaneously can be to cartilago acetabularis and subchondral bone two
Kind different tissues are cut.By small size reamer for hip arthroplasty,acetabulum, increases cutter hub diameter 2mm every time and progressive burr is carried out to acetabular bone.Knife
Body should be fully seated in acetabular bone, cut into the acetabular bone of patient and be close with prosthese outer dimension.Must reamer for hip arthroplasty,acetabulum be ground to
Enough depth, until acetabular bone reaches the size finally required, to realize acetabulum reconstruction.
It in clinical use, needs constantly to replace reamer for hip arthroplasty,acetabulum not of uniform size (diameter is from small to large), clinic is constantly more
The burden of doctor can be improved, increase operating time by changing surgical instrument not only, and is easy to cause during acetabulum reconstruction to the heart not
Standard causes prosthese installation site improper, influences surgical effect, operative failure is directly resulted in when serious.
Utility model content
The utility model aim is to provide a kind of variable diameter reamer for hip arthroplasty,acetabulum, it can efficiently solve asking in the presence of background technique
Topic.
Technical problem to be solved in the utility model is realized using following technical scheme:
A kind of variable diameter reamer for hip arthroplasty,acetabulum including knife bar and is set to the tool apron of knife bar lower end, using knife bar as axle center on the tool apron
Circular array shows multiple side blades, and sliding shoe is slidably provided on the knife bar, and the sliding shoe passes through connecting rod and side tool
Piece is flexibly connected, and the connecting rod and side blade correspond, and the sliding shoe side is provided with adjustable lock screw, institute
It states tool apron bottom at least to open along its rotation direction there are two lower blade, the side blade is opened along the sagittal plane of knife bar rotation direction
Equipped with side tool sword.
The lower blade is approximate with side tool sword on same spherical surface.
At least one guide protrusions is provided on the knife bar along its length, is provided with and is oriented on the sliding shoe
The matched sliding recess of protrusion.
The scale that respective side blade opens different-diameter is provided in the guide protrusions.
It is provided on the knife bar respectively and scale is corresponding and corresponding with lock screw detent.
Basal plane on the outside of the side blade is spherical surface, curved surface or plane；The side tool sword be Kong Ren, straight sword, arcuate blade or
Variable curvature sword.
The basal plane of the tool apron bottom is spherical surface, curved surface or plane；The lower blade is Kong Ren, straight sword or arcuate blade.
The side blade lower end is provided with retention bead, and the tool apron is provided with recessed with the matched limit of retention bead respectively
Slot, the retention bead are articulated in limiting groove.
The side blade upper end is provided with the holding tank for accommodating connection boom end, and the connecting rod is articulated in holding tank,
The connecting rod other end and sliding shoe are hinged.
The knife bar upper end is provided with driving section, and the driving section includes being set to the clamping slot of knife bar end and being set to
The positioning surface of knife bar end side.
Specifically used step: according to the reducing reamer for hip arthroplasty,acetabulum of required diameter selection certain specification, (maximum gauge is exactly acetabular bone
Rebuild the cooperation diameter of prosthese), reamer for hip arthroplasty,acetabulum is connect with power device, unscrews lock screw, adjusts the position of sliding shoe, so that
The diameter of reducing reamer for hip arthroplasty,acetabulum is required size, screws lock screw, entire reamer for hip arthroplasty,acetabulum is just locked out, and carries out operation behaviour
Make；In next step, the size of reducing reamer for hip arthroplasty,acetabulum is adjusted again, carries out next step operation, until reconstruction operations terminate.
The beneficial effects of the utility model are:
The utility model realizes the extension of side blade by the mechanism that connecting rod and sliding shoe are constituted, and lock nut realizes lock
It is fixed.When the maximum gauge of reducing reamer for hip arthroplasty,acetabulum, effective cutting parts of blade are on same required spherical surface.In the reality of reamer for hip arthroplasty,acetabulum
In the application of border, the position of the reamer for hip arthroplasty,acetabulum cutting of different-diameter is different, and minor diameter cuts bottom, major diameter cuts outer rim, and different-diameter
The effective cutting tip curvature of reamer for hip arthroplasty,acetabulum be not much different, even if having deviation finally deviation can be carried out in maximum filing diameter
Cutting amendment, thus side blade is extended can also obtain required for prosthese mounting spherical.
Completion acetabulum reconstruction operating procedure in vivo can be entered primary, reduce operating time and doctor's operating burden, subtract
Less because decentraction caused by replacing reamer for hip arthroplasty,acetabulum is not coaxial and tissue damage.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the partial structural diagram of the utility model.
Fig. 3 is the side structure schematic view of the utility model.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
Face combines and is specifically illustrating, and the utility model is further described.
As shown in Figure 1-Figure 3, a kind of variable diameter reamer for hip arthroplasty,acetabulum including knife bar 1 and is set to the tool apron 2 of 1 lower end of knife bar, the knife
Multiple side blades 3 are shown for axle center circular array with knife bar 1 on seat 2, sliding shoe 4, the cunning are slidably provided on the knife bar 1
Motion block 4 is flexibly connected by connecting rod 5 with side blade 3, and the connecting rod 5 is corresponded with side blade 3, the sliding shoe 4 one
Side is provided with adjustable lock screw 6, and 2 bottom of tool apron at least opens that there are two lower blade 7, the sides along its rotation direction
Blade 3 offers side tool sword 8 along the sagittal plane of 1 rotation direction of knife bar.
Preferably, the quantity of the side blade 3 is 2-5 block, and the lower blade 7 is axle center with knife bar 1, is on tool apron 2
Annular array.
The lower blade 7 is approximate with side tool sword 8 on same spherical surface, gradually expands the straight of reamer for hip arthroplasty,acetabulum during the cutting process
Diameter, when reamer for hip arthroplasty,acetabulum is flared to maximum gauge, lower blade 7 with side tool sword 8 on same spherical surface, make the acetabular bone of patient cut into
Prosthese outer dimension is close.
At least one guide protrusions 9 is provided on the knife bar 1 along its length, be provided on the sliding shoe 4 with
Any prior art realization can be used in 9 matched sliding recess (not showing in figure) of guide protrusions, the way of realization of sliding recess.
In view of sliding shoe 4 slides axially on knife bar 1, while sliding shoe 4 is flexibly connected by connecting rod 5 with side blade 3, to guarantee
The smoothness of running, setting guide protrusions 9 match with sliding recess, it is ensured that the consistency that sliding shoe 4 is axially moved, anti-on-slip
Motion block 4 generates rotation, can alleviate torsional forces in 3 cutting process of side blade, improve the stability of reamer for hip arthroplasty,acetabulum.Described here
The best annular array of guide protrusions 9 is in 1 outside of knife bar, to ensure the uniformity of stress.
The scale (showing in figure) that respective side blade 8 opens different-diameter is provided in the guide protrusions 9, here institute
Any prior art realization can be used in the scale stated.The reamer for hip arthroplasty,acetabulum of the prior art perform the operation carry out when, by small size reamer for hip arthroplasty,acetabulum,
Increase cutter hub diameter 2mm every time and progressive burr is carried out to acetabular bone, therefore the scale in the guide protrusions 9 is preferably each quarter
Spend corresponding cutter hub expansion diameter 2mm.
It is provided on the knife bar 1 respectively and scale is corresponding and corresponding with lock screw 6 detent (showing in figure).It examines
Consider and existing stability problem be fixed using lock screw 6, be arranged on knife bar 1 detent corresponding with scale for
Lock screw 6 cooperates, it is ensured that positioning is firm, while convenient for adjusting positioning, precision is high.Detent described here will only play limit
Position effect can be selected any technology and realize, such as opens up groove on knife bar 1.
The basal plane 10 in 3 outside of side blade is spherical surface, curved surface or plane, and 10 shape of basal plane in 3 outside of side blade is to hip
The use influence of mortar file less, requires nothing more than the path that 10 shape of basal plane is not cut with side tool sword 8 and interferences；The side tool sword 8 is
Kong Ren, straight sword, arcuate blade or variable curvature sword, but the knife edge outer rim of side tool sword 8 is arc-shaped, after so that reamer for hip arthroplasty,acetabulum is flared to maximum gauge
Knife edge outer rim and lower blade 7 are on same spherical surface.Preferably, the side tool sword 8 should be dug outward, outside the knife edge for making side tool sword 8
Edge is in other than the basal plane 10 of side blade 3 in any state.
The basal plane 11 of 2 bottom of tool apron is spherical surface, curved surface or plane；The lower blade 7 is Kong Ren, straight sword or arc
Sword.The basal plane 11 of 2 bottom of tool apron influences the use of reamer for hip arthroplasty,acetabulum less, to require nothing more than what 11 shape of basal plane was not cut with lower blade 7
Path interference, but the knife edge outer rim of lower blade 7 after reamer for hip arthroplasty,acetabulum is flared to maximum gauge should at the knife edge outer rim of side tool sword 8
In on same spherical surface.
Above-mentioned described Kong Ren, straight sword, arcuate blade, variable curvature sword can be selected any prior art and realize.
3 lower end of side blade is provided with retention bead 12, and the tool apron 2 is provided with matched with retention bead 12 respectively
Limiting groove 13, the retention bead 12 are articulated in limiting groove 13.
3 upper end of side blade is provided with the holding tank 14 for accommodating 5 end of connecting rod, and the connecting rod 5 is articulated with receiving
In slot 14,5 other end of connecting rod and sliding shoe 4 are hinged.
1 upper end of knife bar is provided with driving section 15, and the driving section 15 includes the clamping slot 16 for being set to 1 end of knife bar
And it is set to the positioning surface 17 of 1 end side of knife bar.Driving section can connect the driving mechanism of any prior art, rotate knife bar
Realize cutting.
Specifically used step: according to the reducing reamer for hip arthroplasty,acetabulum of required diameter selection certain specification, (maximum gauge is exactly acetabular bone
Rebuild the cooperation diameter of prosthese), reamer for hip arthroplasty,acetabulum is connect with power device, unscrews lock screw, adjusts the position of sliding shoe, so that
The diameter of reducing reamer for hip arthroplasty,acetabulum is required size, screws lock screw, entire reamer for hip arthroplasty,acetabulum is just locked out, and carries out operation behaviour
Make；In next step, the size of reducing reamer for hip arthroplasty,acetabulum is adjusted again, carries out next step operation, until reconstruction operations terminate.
Above is a specific implementation of the utility model, therefore the description thereof is more specific and detailed, but can not be
And it is interpreted as that a limitation on the scope of the patent of the present invention.It should be pointed out that for those of ordinary skill in the art,
Without departing from the concept of the premise utility, various modifications and improvements can be made, these obviously replace shape
Formula belongs to the protection scope of the utility model.
Claims (10)
1. a kind of variable diameter reamer for hip arthroplasty,acetabulum, it is characterised in that: including knife bar and the tool apron of knife bar lower end is set to, with knife on the tool apron
Bar is that axle center circular array shows multiple side blades, sliding shoe is slidably provided on the knife bar, the sliding shoe passes through connection
Bar is flexibly connected with side blade, and the connecting rod and side blade correspond, and the sliding shoe side is provided with adjustable lock
Tight screw, the tool apron bottom are at least opened along its rotation direction there are two lower blade, and the side blade is along knife bar rotation direction
Side tool sword is offered on sagittal plane.
2. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 1, it is characterised in that: the lower blade is approximate with side tool sword same
On one spherical surface.
3. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 1, it is characterised in that: be arranged along its length on the knife bar
There is at least one guide protrusions, is provided on the sliding shoe and the matched sliding recess of guide protrusions.
4. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 3, it is characterised in that: be provided with respective side in the guide protrusions
The scale of blade opening different-diameter.
5. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 4, it is characterised in that: be provided on the knife bar respectively with scale
Detent corresponding and corresponding with lock screw.
6. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 2, it is characterised in that: the basal plane on the outside of the side blade is ball
Face, curved surface or plane；The side tool sword is Kong Ren, straight sword, arcuate blade or variable curvature sword.
7. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 2, it is characterised in that: the basal plane of the tool apron bottom be spherical surface,
Curved surface or plane；The lower blade is Kong Ren, straight sword or arcuate blade.
8. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 1, it is characterised in that: the side blade lower end is provided with limit convex
It rises, the tool apron is provided with respectively with the matched limiting groove of retention bead, and the retention bead is articulated in limiting groove.
9. a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 1, it is characterised in that: the side blade upper end is provided with receiving and connects
The holding tank of extension bar end, the connecting rod are articulated in holding tank, and the connecting rod other end and sliding shoe are hinged.
10. -9 described in any item a kind of variable diameter reamer for hip arthroplasty,acetabulum according to claim 1, it is characterised in that: the knife bar upper end setting
There is driving section, the driving section includes the positioning surface for being set to the clamping slot of knife bar end and being set to knife bar end side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721512068.3U CN208481412U (en) | 2017-11-14 | 2017-11-14 | A kind of variable diameter reamer for hip arthroplasty,acetabulum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721512068.3U CN208481412U (en) | 2017-11-14 | 2017-11-14 | A kind of variable diameter reamer for hip arthroplasty,acetabulum |
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| Publication Number | Publication Date |
|---|---|
| CN208481412U true CN208481412U (en) | 2019-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721512068.3U Active CN208481412U (en) | 2017-11-14 | 2017-11-14 | A kind of variable diameter reamer for hip arthroplasty,acetabulum |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107714138A (en) * | 2017-11-14 | 2018-02-23 | 广东工业大学 | A kind of reducing reamer for hip arthroplasty,acetabulum |
| CN107714138B (en) * | 2017-11-14 | 2024-07-12 | 广东工业大学 | Reducing acetabular file |
-
2017
- 2017-11-14 CN CN201721512068.3U patent/CN208481412U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107714138A (en) * | 2017-11-14 | 2018-02-23 | 广东工业大学 | A kind of reducing reamer for hip arthroplasty,acetabulum |
| CN107714138B (en) * | 2017-11-14 | 2024-07-12 | 广东工业大学 | Reducing acetabular file |
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