CN209529405U - A kind of femur driver - Google Patents
A kind of femur driver Download PDFInfo
- Publication number
- CN209529405U CN209529405U CN201821167992.7U CN201821167992U CN209529405U CN 209529405 U CN209529405 U CN 209529405U CN 201821167992 U CN201821167992 U CN 201821167992U CN 209529405 U CN209529405 U CN 209529405U
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- China
- Prior art keywords
- head
- femur
- handle
- adapting rod
- soft
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- 210000000689 upper leg Anatomy 0.000 title claims abstract description 25
- 238000009527 percussion Methods 0.000 claims abstract description 8
- 244000273618 Sphenoclea zeylanica Species 0.000 claims description 16
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 210000004394 hip joint Anatomy 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 238000005488 sandblasting Methods 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 208000007446 Hip Dislocation Diseases 0.000 description 1
- 101000911772 Homo sapiens Hsc70-interacting protein Proteins 0.000 description 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model discloses a kind of femur driver, including soft squeeze into head, adapting rod, handle and striking head, wherein adapting rod setting is squeezed between head and handle soft, and striking head is fixed on the one end of handle far from the adapting rod；The soft head of squeezing into is equipped with the first end for contacting femoral head prosthesis, and first end is far from adapting rod；Spherical surface cavity is offered on above-mentioned first end, the radial diameter of the spherical surface cavity is gradually reduced along recess direction, and the concave surface that spherical surface cavity has surface smooth, concave surface includes multiple annular cambered surfaces with different curvature.Femur driver provided by the utility model is suitable for various sizes of femoral head prosthesis simultaneously, and can guarantee accurately to be implanted into and avoid percussion damage or damage femoral head prosthesis in the process with its face contact.
Description
Technical field
The utility model relates to artificial hip joint replacing instrument fields, and in particular to a kind of femur driver.
Background technique
Artificial hip joint includes a spherical femoral head prosthesis, and femoral head prosthesis is the weight in human hip displacement technique
Component is wanted, in the course of surgery, needs for femoral head prosthesis to be installed to the femoral head for substituting human lesion in femoral stem.
Common femoral head prosthesis is usually made of metal or ceramics on medical market at present, first in implantation process
The recess of femoral head prosthesis is first placed into the end of femoral stem, then by the bulb end of femur driver and femoral head prosthesis
Fitting, the axial end for gently tapping femur driver and femoral head prosthesis being fixed on to femoral stem.Existing femoral head is squeezed into
Device squeezes into head as single radian design, and such as Fig. 1, squeezing into head can only cause to be applied to stock with the spherical surface point contact of femoral head prosthesis
Stress on bone prosthese is concentrated, and percussion process can cause to damage to femoral head prosthesis, and especially ceramic femoral head is easily split
Line or breakage.In addition, currently on the market general femoral head prosthesis have different diameter (φ 24mm, φ 28mm, φ 32mm and
φ 36mm), it is therefore desirable to there is the head of squeezing into of different radians according to prosthesis size replacement, it is cumbersome, and be easily introduced personnel and dredge
The risks such as suddenly.
Summary of the invention
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide a kind of femorals head for being hardly damaged prosthese
Impactor.
The utility model is achieved through the following technical solutions:
A kind of femur driver, including it is soft squeeze into head, adapting rod, handle and striking head, the adapting rod setting exists
It is described it is soft squeeze between head and handle, the striking head is fixed on the one end of the handle far from the adapting rod；It is described soft
Matter squeezes into head equipped with the first end for contacting femoral head prosthesis, and the first end is far from the adapting rod；Described first
End offers spherical surface cavity, and the radial diameter of the spherical surface cavity is gradually reduced along recess direction, and the spherical surface cavity has
The smooth concave surface in surface, the concave surface include multiple annular cambered surfaces with different curvature.
Specifically, the curvature of the annular cambered surface is gradually increased along the recess direction of the spherical surface cavity.
Preferably, along the recess direction of the spherical surface cavity, the radius of curvature of the annular cambered surface is followed successively by SR18mm,
SR16mm, SR14mm and SR12mm.
Preferably, the central axes of the spherical surface cavity, adapting rod, handle and striking head are coaxial.
Further, the soft head of squeezing into is equipped with the second end opposite with the first end, the adapting rod tool
Squeeze into a connecting pin, the second end and to squeeze into a connecting pin affixed.
Optionally, the both ends of the handle are Nian Jie with the adapting rod and striking head respectively, weld, are spirally connected, are clamped or lead to
Cross that wear connector affixed.
Preferably, the second end and squeeze into a connecting pin, alternatively is equipped with mounting groove, it is another be equipped with it is described
First connector of mounting groove cooperation, described soft to squeeze into head and adapting rod affixed by first connector and mounting groove.
Preferably, the handle includes hollow stem, the adapting rod be equipped with far from it is described squeeze into a connecting pin and can
Protrude into the second connector of the hollow stem inner cavity.
Preferably, the striking head includes the fixing head for tapping cover board and being arranged in percussion cover board plate face, the fixation
Head protrudes into the inner cavity of the hollow stem, and the percussion cover board is connected on the end face of the handle.
Preferably, the handle further includes the soft layer being set in outside the hollow stem, and the soft layer outer wall is equipped with
Multiple sunk structures for being suitable for holding.
A kind of femur driver of the utility model, has the following beneficial effects:
1. the concave surface of the spherical surface cavity for contacting femoral head prosthesis includes the annular cambered surface of multiple and different curvature, Neng Goushi
For the femoral head prosthesis of different-diameter, when being implanted into various sizes of femoral head prosthesis, does not need to replace and soft squeeze into head, letter
Change surgical procedure, prevents from squeezing into head loosening caused by frequently replacing.
2. the radius of curvature of annular cambered surface is matched with the spherical radius of general femoral head prosthesis, the femoral head of different-diameter
The annular cambered surface face contact that prosthese can match with curvature, in tapping implantation process, soft head of squeezing into is applied to femoral head vacation
Stress dispersion on body and uniformly prevents femoral head prosthesis because of stress is concentrated damaged or fragmentation.
3. spherical surface cavity, adapting rod, the central axes of handle and striking head are coaxial, guarantee femoral head prosthesis uniform force and beat
It is accurate to enter position.
4. the outer layer of handle is soft layer and is provided with the sunk structure for being suitable for holding, femur driver is avoided to use
It slides or slips in the process and influence implantation effect.
Detailed description of the invention
It, below will be to institute in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the utility model
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some of the utility model
Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these
Figure obtains other attached drawings.
Fig. 1 is the side sectional view for squeezing into head of existing femur driver；
Fig. 2 is the structural schematic diagram of the femur driver of the utility model；
Fig. 3 is the soft top view for squeezing into head of the utility model；
Fig. 4 is the cross-sectional view in the face A-A in Fig. 3；
Fig. 5 is the side sectional view of the femur driver of the utility model.
In figure: 100- is soft to squeeze into head, 200- adapting rod, 300- handle, 400- striking head, 110- first end, 111-
Spherical surface cavity, 112- annular cambered surface, 120- the second end, 130- mounting groove, 210- squeeze into a connecting pin, the connection of 220- first
Head, the second connector of 230-, the first limited step of 240-, the second limited step of 250-, 310- hollow stem, the connection of 320- first
Pin, the second connecting pin of 330-, 340- soft layer, 350- third connecting pin, 410- tap cover board, 420- fixing head.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, to the technical solution in inventive embodiments carry out it is clear,
It is fully described by, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The every other embodiment obtained, fall within the protection scope of the utility model.
Reference book attached drawing 2 to 5, a kind of femur driver, including soft squeeze into first 100, adapting rod 200, handle
300 and striking head 400, wherein the setting of adapting rod 200 it is described it is soft squeeze between first 100 and handle 300, striking head 400 is solid
It is scheduled on the one end of the handle 300 far from the adapting rod 200；It is described it is soft squeeze into first 100 be equipped with for contact femoral head vacation
The first end 110 of body, for the first end 110 far from the adapting rod 200, it is recessed that the first end 110 offers spherical surface
The radial diameter of chamber 111, the spherical surface cavity 111 is gradually reduced along recess direction, and the spherical surface cavity 111 has surface smooth
Concave surface, the concave surface includes multiple annular cambered surfaces 112 with different curvature.
After femoral head prosthesis is placed in type femoral bone end prosthesis end, need to be fixed in femoral stem vacation using femur driver
On body, the concave surface of spherical surface cavity 111 is connected on the bulb of femoral head prosthesis, is gently tapped in striking head, and power is with handle
300, adapting rod 200 and it is soft squeeze into first 100 conduction on femoral head prosthesis, realization is squeezed into.
Spherical surface cavity 111 can accommodating portion femoral head prosthesis, play fixed function, with different curvature annular cambered surface
112 can be suitable for various sizes of femoral head prosthesis, and do not need replacement impactor squeezes into head, simplifies operating procedure, reduce
Personnel neglect a possibility that introducing operation risk；Frequently head is squeezed into replacement, it is also possible to lead to the interface pine for squeezing into head or adapting rod
It is dynamic, so that occurring phenomena such as shaking or shaking during squeezing into；The concave surface of spherical surface cavity 111 is smooth and pierces without rib, it is preferred that
Flawless on concave surface, stress caused by avoiding because of protrusion or particle etc. concentrate or crack caused by discontinuity；It is soft to squeeze into
The material of head is preferably plastics or silica gel, and material itself has good elasticity, prevents femoral head prosthesis stress damaged.
The curvature of the annular cambered surface 112 is gradually increased along the recess direction of the spherical surface cavity 111.In this way, have compared with
Large-sized femoral head prosthesis can be contacted with the lesser annular cambered surface of curvature, that is, be connected to the shallower place of spherical surface cavity 111, tool
There are the femoral head prosthesis of smaller size and the annular cambered surface 112 of 111 higher depth of spherical surface cavity to contact.
Preferably, the central axes of the spherical surface cavity 111, adapting rod 200, handle 300 and striking head 400 are coaxial.In this way,
When applying an axial percussion power in striking head, annular cambered surface 112 and the contact surface upper stress of femoral head prosthesis are uniform, and protect
Card femoral head prosthesis squeezes into the accuracy of position.
In a specific embodiment, along the recess direction of the spherical surface cavity 111, the song of the annular cambered surface 112
Rate radius is followed successively by SR18mm, SR16mm, SR14mm and SR12mm.The diameter of general femoral head prosthesis is in the marketWithThe radius of curvature of above-mentioned annular cambered surface 112 is matched, energy
Enough meet general use demand, the number and curvature for the annular cambered surface 112 that certain 111 concave surface of spherical surface cavity is included are not limited to
Numerical value is stated, can also increase or change according to demand.
It is described it is soft squeeze into first 100 be equipped with the second end 120 opposite with the first end 110, the adapting rod 200
With squeezing into a connecting pin 210, the second end 120 and to squeeze into a connecting pin 210 affixed.
The both ends of the handle 300 are Nian Jie with the adapting rod 200 and striking head 400 respectively, weld, be spirally connected, being clamped or
It is affixed by wearing connector.
In a specific embodiment, it the second end 120 and squeezes into a connecting pin 210, alternatively is equipped with
Mounting groove 130, it is another equipped with the first connector 220 cooperated with the mounting groove 130, it is described soft to squeeze into first 100 and switching
Bar 200 is affixed by the mounting groove 130 and the first connector 220；Connection type can be spirally connected, weld, being bonded, being clamped or
Any one common being fixedly connected in mode of person.
In a specific embodiment, it is additionally provided with the first limited step 240 on first connector 220, described
The terrace of one limited step 240 is resisted against on the end face at 130 place of mounting groove.Limited step, which can be avoided, soft squeezes into head
100 and 200 axial vibration of adapting rod or opposite sliding.
In a specific embodiment, the handle 300 includes hollow stem 310, and the adapting rod 200 is equipped with far from institute
It states squeezing into a connecting pin 210 and can extend into the second connector 230 of 310 inner cavity of hollow stem；Preferably, described second
The second limited step 250, the end face of the terrace of second limited step 250 and the handle 300 are additionally provided on connector 230
It abuts.Limited step can be avoided adapting rod 200 and 300 axial vibration of handle or opposite sliding.Preferably, 310 He of hollow stem
The contact surface of adapting rod 200 welds, using electrolysis, sandblasting and Passivation Treatment after welding.
In a specific embodiment, second connector 230 is radially equipped with the first connecting pin 320, described
The both ends of first connecting pin 320 are separately fixed on the side wall of the handle 300.Preferably, the first connecting pin 320 and hollow stem
310 bar wall welding, using electrolysis, sandblasting and Passivation Treatment in addition to screw thread.Certainly, second connector 230 with it is described in
Empty bar 310 can also directly be spirally connected, weld, being bonded or using common fixed connection mode any one.
In a specific embodiment, the striking head 400 includes tapping cover board 410 and setting to tap cover board 410
Fixing head 420 in plate face, the fixing head 420 are preferably located in the middle part for tapping cover board 410；The fixing head 420
It protrudes into the inner cavity of the hollow stem 310, the percussion cover board 410 is connected on the end face of the handle 300；Preferably, institute
It states fixing head 420 and is radially also equipped with the second connecting pin 330, the both ends of second connecting pin 330 are separately fixed at described
On the side wall of handle 300.
The handle 300 further includes the soft layer 340 being set in outside the hollow stem 310.Preferably, the soft layer
340 outer walls are equipped with multiple sunk structures for being suitable for holding.Wherein, the length of above-mentioned second connecting pin 330 be preferably greater than in
The diameter of empty bar 310 and be less than handle 300 diameter, the both ends of the second connecting pin 330 are separately fixed in soft layer 340.
In a specific embodiment, the handle 300 further includes third connecting pin 350, the third connecting pin 350
Both ends be pierced by the side wall of the hollow stem 310 respectively after be fixed in the soft layer 340.Preferably, the soft layer 340 by
Silica gel middle layer and silica gel outer layer composition, surface dermatoglyph uniform and smooth, spue line show without obvious flash, without cracking and notch
As indeformable after high temperature and pressure not fade.
The preferred embodiment of the utility model has shown and described in above description, as previously described, it should be understood that this is practical new
Type is not limited to forms disclosed herein, and should not be regarded as an exclusion of other examples, and can be used for various other groups
Conjunction, modification and environment, and above-mentioned introduction or the technology of related fields can be passed through within the scope of the inventive concept described herein
Or knowledge is modified.And changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, then
It all should be in the protection scope of the appended claims for the utility model.
Claims (10)
1. a kind of femur driver, which is characterized in that including it is soft squeeze into head (100), adapting rod (200), handle (300) and
Striking head (400), the adapting rod (200) setting it is described it is soft squeeze between head (100) and handle (300), the percussion
Head (400) is fixed on the one end of the handle (300) far from the adapting rod (200)；
Described soft squeeze into head (100) are equipped with the first end (110) for contacting femoral head prosthesis, the first end
(110) far from the adapting rod (200)；
The first end (110) offers spherical surface cavity (111), and the radial diameter of the spherical surface cavity (111) is along recess side
To being gradually reduced, the concave surface that the spherical surface cavity (111) has surface smooth, the concave surface includes multiple with different curvature
Annular cambered surface (112).
2. femur driver according to claim 1, which is characterized in that the curvature of the annular cambered surface (112) is along institute
The recess direction for stating spherical surface cavity (111) is gradually increased.
3. femur driver according to claim 1, which is characterized in that along the recess side of the spherical surface cavity (111)
To the radius of curvature of the annular cambered surface (112) is followed successively by SR18mm, SR16mm, SR14mm and SR12mm.
4. femur driver according to claim 1, which is characterized in that the spherical surface cavity (111), adapting rod
(200), the central axes of handle (300) and striking head (400) are coaxial.
5. femur driver according to claim 1, which is characterized in that described soft squeeze into head (100) are equipped with and institute
The opposite the second end (120) of first end (110) is stated, the adapting rod (200), which has, squeezes into a connecting pin (210), described
The second end (120) and to squeeze into a connecting pin (210) affixed.
6. femur driver according to claim 1, which is characterized in that the both ends of the handle (300) respectively with institute
It states adapting rod (200) and striking head (400) is bonded, welds, being spirally connected, being clamped or affixed by wearing connector.
7. femur driver according to claim 5, which is characterized in that the second end (120) and squeeze into head company
It connects in end (210), alternatively is equipped with mounting groove (130), another equipped with the first connector cooperated with the mounting groove (130)
(220), soft head (100) and the adapting rod (200) squeezed into is consolidated by the mounting groove (130) and the first connector (220)
It connects.
8. femur driver according to claim 5, which is characterized in that the handle (300) includes hollow stem
(310), the adapting rod (200) is equipped with far from described squeezing into a connecting pin (210) and can extend into the hollow stem (310)
The second connector (230) of inner cavity.
9. femur driver according to claim 8, which is characterized in that the striking head (400) includes tapping cover board
(410) and setting is tapping the fixing head (420) in cover board (410) plate face, and the fixing head (420) protrudes into the hollow stem
(310) in inner cavity, the percussion cover board (410) is connected on the end face of the handle (300).
10. femur driver according to claim 8, which is characterized in that the handle (300) further includes being set in institute
The external soft layer (340) of hollow stem (310) is stated, soft layer (340) outer wall is equipped with multiple recess knots for being suitable for holding
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167992.7U CN209529405U (en) | 2018-07-23 | 2018-07-23 | A kind of femur driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821167992.7U CN209529405U (en) | 2018-07-23 | 2018-07-23 | A kind of femur driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209529405U true CN209529405U (en) | 2019-10-25 |
Family
ID=68244337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821167992.7U Active CN209529405U (en) | 2018-07-23 | 2018-07-23 | A kind of femur driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209529405U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023082988A1 (en) * | 2021-11-10 | 2023-05-19 | 北京市春立正达医疗器械股份有限公司 | Easy mounting-type iliac wing filling block |
-
2018
- 2018-07-23 CN CN201821167992.7U patent/CN209529405U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023082988A1 (en) * | 2021-11-10 | 2023-05-19 | 北京市春立正达医疗器械股份有限公司 | Easy mounting-type iliac wing filling block |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240429 Address after: 200135 Room 202, building 4, No. 590, Ruiqing Road, east zone of Zhangjiang High tech industry, Pudong New Area, Shanghai Patentee after: Shanghai Dabo Medical Technology Co.,Ltd. Country or region after: China Address before: No. 18 Shanbian Hongdong Road, Haicang District, Xiamen City, Fujian Province, 361000 Patentee before: DOUBLE MEDICAL TECHNOLOGY Inc. Country or region before: China |