CN210472338U - Artificial hip joint ceramic lining oscillation extractor - Google Patents
Artificial hip joint ceramic lining oscillation extractor Download PDFInfo
- Publication number
- CN210472338U CN210472338U CN201920720667.7U CN201920720667U CN210472338U CN 210472338 U CN210472338 U CN 210472338U CN 201920720667 U CN201920720667 U CN 201920720667U CN 210472338 U CN210472338 U CN 210472338U
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- Prior art keywords
- rod
- vibrating rod
- extractor
- hip joint
- artificial hip
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- 239000000919 ceramic Substances 0.000 title claims abstract description 26
- 210000004394 hip joint Anatomy 0.000 title claims abstract description 21
- 230000010355 oscillation Effects 0.000 title claims description 12
- 210000000988 bone and bone Anatomy 0.000 abstract description 2
- 210000000588 acetabulum Anatomy 0.000 description 13
- 230000006978 adaptation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002639 bone cement Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
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Abstract
The utility model provides an artificial hip joint ceramic lining vibration extractor, which comprises a working head end and a power source for providing linear reciprocating motion, wherein the working head end comprises a vibrating rod, a positioning inner core is coaxially arranged in the vibrating rod, the top end of the positioning inner core is connected with the vibrating rod through an elastic element, and the bottom end of the positioning inner core penetrates through the bottom of the vibrating rod and is connected with a positioning ball; the top end of the vibrating rod is fixedly connected with a power source, a knocking rod which inclines downwards is fixed on the outer side of the vibrating rod, and a preset included angle is formed between the knocking rod and the axis of the vibrating rod. The utility model discloses in, adopt power supply and location inner core, more traditional bone knife hammering mode, the operation is simpler, safety.
Description
Technical Field
The utility model relates to the field of medical equipment, concretely relates to artifical hip joint ceramic lining vibrates extractor.
Background
The artificial hip joint operation comprises artificial acetabulum replacement and artificial femoral head replacement, an artificial acetabulum (namely an acetabulum prosthesis) is required to be used, the acetabulum prosthesis usually consists of an acetabulum cup and a ceramic lining, the acetabulum cup is fixed in an acetabulum socket of a human body through bone cement or a porous coating, the ceramic lining is usually designed to be in press fit locking with the taper of the acetabulum cup, and the ceramic lining and the acetabulum cup are highly inosculated, so that the ceramic lining is not easy to fall off from the acetabulum cup, but the problem that the ceramic lining.
However, in the artificial hip revision surgery, the original prosthesis needs to be taken out, the acetabulum prosthesis is taken out in two steps, the ceramic lining in the acetabulum cup is taken out, and then the acetabulum cup is taken down from a human body.
In clinical practice, the common way is to support at the inside lining edge with osteotome (chisel), strikes the osteotome with the tup, shakes the inside lining loose back and takes out, because lack location and tup strike the amplitude big, the osteotome slippage appears often, the operation is unstable, in addition, because outer cup is inseparable with the inside lining laminating, relies on the manual work to strike, and consuming time and wasting power seriously influences operating efficiency, and the tup strikes the sound, can increase patient's uneasy sense.
SUMMERY OF THE UTILITY MODEL
To among the prior art, acetabular bone false body inside lining takes out instrument lacks the location, the difficult operation, easily slippage scheduling problem, the utility model provides an artifical hip joint ceramic inside lining vibrates extractor with good location, easy operation convenience, labour saving and time saving.
In order to achieve the purpose, the utility model provides an artificial hip joint ceramic lining oscillation extractor, which comprises a working head end and a power source for providing linear reciprocating motion;
the working head end comprises a vibrating rod, a positioning inner core is coaxially arranged in the vibrating rod, the top end of the positioning inner core is connected with the vibrating rod through an elastic element, and the bottom end of the positioning inner core penetrates through the bottom of the vibrating rod and is connected with a positioning ball; the top end of the vibrating rod is fixedly connected with a power source, a knocking rod which inclines downwards is fixed on the outer side of the vibrating rod, and a preset included angle is formed between the knocking rod and the axis of the vibrating rod.
Preferably, in the artificial hip joint ceramic lining oscillation extractor, the diameter of the positioning ball is in clearance fit with the lining of the acetabular prosthesis, and the clearance is 0.5-1 mm.
Preferably, in the artificial hip joint ceramic lining shaking extractor, the elastic element is a spring or a balloon.
Preferably, in the artificial hip joint ceramic lining oscillation extractor, the knocking rod and the vibrating rod are in a 30-60 degree angle.
Preferably, artifical hip joint ceramic lining vibrate extractor in, the power supply includes the shell body, motor, driving gear, driven gear, first connecting rod, the second connecting rod, slide bar and linear bearing have in the shell body, the motor passes through the support to be fixed on the shell body for it is rotatory to drive the driving gear, driven gear and driving gear meshing, the one end of first connecting rod is fixed on driven gear's rotation axis, the other end is articulated with the one end of second connecting rod, the other end of second connecting rod is articulated with the one end of slide bar, the other end of slide bar runs through the linear bearing of installing on the shell body, and extend the top fixed connection of shell body and vibrating arm.
Preferably, in the artificial hip joint ceramic lining oscillation extractor, the vibrating rod is detachably and fixedly connected with the sliding rod. The detachable fixed connection adopts the conventional detachable connection mode in the mechanical field such as threaded connection, buckle connection and the like.
When the device is used, the positioning inner core is firstly clamped and embedded in the ball groove of the inner lining of the acetabular prosthesis, the positioning of the extractor can be conveniently realized due to the size adaptation of the head end of the positioning inner core and the ball groove of the inner lining, meanwhile, a ball hinge structure is formed between the positioning inner core and the inner lining, and the working head end of the extractor can freely rotate by positioning the ball center of the ball so as to adjust the inclination angle of the working head end. Then, adjusting the working head end to enable the bottom end of the knocking rod to abut against the ring surface of the upper edge of the lining; and finally, starting a power source, driving the vibrating rod to reciprocate by the power source, and further enabling the knocking rod to continuously knock the lining, so that the joint surface of the lining and the acetabular cup is shaken loose, and the lining is taken out.
Adopt the utility model discloses in the extractor that proposes for the inside lining takes out the operation simple more convenient, has practiced thrift operation time, and has reduced the operation risk.
Drawings
FIG. 1 is a schematic structural diagram of a working head end;
fig. 2 is a schematic structural view of an artificial hip joint ceramic lining oscillation extractor.
In the figure: 1-liner, 2-acetabular cup
100-a working head end, 110-a vibrating rod, 120-a positioning inner core, 130-an elastic element, 140-a positioning ball and 150-a knocking rod;
200-power source, 210-outer shell, 220-driving gear, 230-driven gear, 240-first connecting rod, 250-second connecting rod, 260-sliding rod and 270-linear bearing.
Detailed Description
The artificial hip joint ceramic lining shock extractor of the present invention will now be described in greater detail with reference to the schematic drawings, in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.
The artificial hip joint ceramic lining 1 shaking extractor consists of a working head end 100 and a power source 200. The power source 200 is used to provide the working head end 100 with a linear reciprocating motion, that is, the power source 200 is a linear reciprocating motion mechanism, and the form of the linear reciprocating motion mechanism is various, and all the power source can be applied to the embodiment, such as a medical reciprocating saw, the working head end 100 can be installed at a blade installation position of the reciprocating saw, and the reciprocating saw drives the working head end 100 to vibrate in a reciprocating manner.
Referring to fig. 1, the working head end 100 includes a vibrating rod 110, a positioning core 120 is coaxially disposed in the vibrating rod 110, a top end of the positioning core 120 is connected to the vibrating rod 110 through an elastic element 130, and the elastic element 130 may be an elastic body with a telescopic shock-absorbing property, such as a spring or an air bag.
The bottom of location inner core 120 runs through the bottom of vibrating arm 110 and is connected with a location ball 140, and the size of this location ball 140 and the inside lining 1 looks adaptation of waiting to take out are designed for clearance fit usually, and the clearance size is 0.5mm ~ 1mm, and when using, location ball 140 is used for with inside lining 1 ball groove block, forms the setpoint, takes place the slippage when avoiding the extractor to use and causes the tissue damage. It can be understood that, in this embodiment, the connection between the positioning ball 140 and the positioning inner core 120 may also be designed to be a conventional detachable connection manner in the mechanical field, such as a threaded connection, a snap connection, and the like, so that it is convenient to replace the positioning ball 140 according to the size of the liner 1 of different patients, so that the working head end 100 has better applicability.
The top end of the vibrating rod 110 is fixedly connected with the power source 200, a downward inclined knocking rod 150 is fixed on the outer side of the vibrating rod 110, the knocking rod 150 and the axis of the vibrating rod 110 form a predetermined included angle, the predetermined included angle is generally 30-60 degrees, it can be understood that in the embodiment, a plurality of knocking rods 150 can be arranged, the plurality of knocking rods 150 are circumferentially arranged along the outer side of the vibrating rod 110 in a surrounding manner, and it is noted that the surrounding angle formed by the plurality of knocking rods 150 is smaller than 180 degrees. After the power source 200 is started, the power source 200 transmits reciprocating motion to the vibrating rod 110, the vibrating rod 110 transmits the reciprocating motion to the knocking rod 150, the knocking rod 150 knocks the lining 1 at a constant high frequency, the lining 1 is shaken loose, and the lining is taken out of the acetabular cup 2.
In the present embodiment, referring to fig. 2, the power source 200 includes an outer housing 210, which can be used as a grip portion for a user to hold. The outer housing 210 has a motor (not shown), a driving gear 220, a driven gear 230, a first link 240, a second link 250, a sliding rod 260, and a linear bearing 270, the motor is fixed to the outer housing 210 through a bracket (not shown) to drive the driving gear 220 to rotate, the driven gear 230 is engaged with the driving gear 220, and a rotating shaft of the driven gear 230 is mounted to the outer housing 210 through a rolling bearing. The driven gear 230 drives the rotation shaft to rotate when rotating, one end of the first connecting rod 240 is fixed on the rotation shaft of the driven gear 230, the other end of the first connecting rod 240 is hinged with one end of the second connecting rod 250, the other end of the second connecting rod 250 is hinged with one end of the sliding rod 260, and the other end of the sliding rod 260 penetrates through the linear bearing 270 installed on the outer shell 210 and extends out of the outer shell 210 to be fixedly connected with the top end of the vibrating rod 110. It is understood that a built-in battery or an external power interface is disposed in the outer housing 210 to supply power to the motor. When the motor is started, the gear drives the connecting rod to drive the sliding rod 260 to do reciprocating linear telemechanical motion, and the frequency of the reciprocating linear motion can be regulated and controlled by adjusting the rotating speed of the motor.
In addition, in the present embodiment, the vibrating rod 110 and the sliding rod 260 may be connected by a detachable connection method, such as a screw connection or a snap connection, which is conventional in the mechanical field. This detachable design facilitates maintenance, and when either the work head end 100 or the power source 200 fails, one of them may be replaced or maintained.
The using method of the oscillation extractor comprises the following steps:
when the device is used, the positioning inner core 120 is firstly clamped and embedded in the spherical groove of the acetabular prosthesis lining 1, the positioning of the extractor can be conveniently realized due to the size adaptation of the head end of the positioning inner core 120 and the spherical groove of the lining 1, meanwhile, a spherical hinge structure is formed between the positioning inner core 120 and the lining 1, and the working head end 100 of the extractor can freely rotate by the spherical center of the positioning ball 140 so as to adjust the inclination angle of the working head end 100.
The working head end 100 is then adjusted so that the bottom end of the tapping rod 150 rests against the upper rim annulus of the liner 1.
Finally, the power source 200 is started, the vibrating rod 110 is driven by the power source 200 to reciprocate, and the knocking rod 150 is further used for continuously knocking the lining 1, so that the joint surface of the lining 1 and the acetabular cup 2 is shaken loose, and the lining 1 is taken out.
The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.
Claims (6)
1. The utility model relates to an artificial hip joint ceramic lining (1) oscillation extractor which is characterized in that the extractor comprises a working head end (100) and a power source (200) for providing linear reciprocating motion;
the working head end (100) comprises a vibrating rod (110), a positioning inner core (120) is coaxially arranged in the vibrating rod (110), the top end of the positioning inner core (120) is connected with the vibrating rod (110) through an elastic element (130), and the bottom end of the positioning inner core (120) penetrates through the bottom of the vibrating rod (110) and is connected with a positioning ball (140); the top end of the vibrating rod (110) is fixedly connected with the power source (200), a knocking rod (150) which inclines downwards is fixed on the outer side of the vibrating rod (110), and a preset included angle is formed between the knocking rod (150) and the axis of the vibrating rod (110).
2. The ceramic liner (1) oscillation extractor of artificial hip joint according to claim 1, wherein the diameter of the positioning ball (140) is in clearance fit with the liner (1) of acetabular prosthesis, and the clearance is 0.5 mm-1 mm.
3. The ceramic liner (1) shake extractor of artificial hip joint according to claim 1, wherein the elastic element (130) is a spring or a balloon.
4. The ceramic liner (1) oscillation extractor of artificial hip joint according to claim 1, wherein the knocking rod (150) is at 30-60 ° to the vibrating rod (110).
5. The oscillating extractor of the artificial hip joint ceramic lining (1) according to claim 1, wherein the power source (200) comprises an outer shell (210), the outer shell (210) has a motor, a driving gear (220), a driven gear (230), a first connecting rod (240), a second connecting rod (250), a sliding rod (260) and a linear bearing (270), the motor is fixed on the outer shell (210) through a bracket and is used for driving the driving gear (220) to rotate, the driven gear (230) is engaged with the driving gear (220), one end of the first connecting rod (240) is fixed on a rotating shaft of the driven gear (230), the other end is hinged with one end of the second connecting rod (250), the other end of the second connecting rod (250) is hinged with one end of the sliding rod (260), the other end of the sliding rod (260) passes through the linear bearing (270) installed on the outer shell (210), and extends out of the outer shell (210) to be fixedly connected with the top end of the vibrating rod (110).
6. The ceramic liner (1) oscillation extractor of artificial hip joint according to claim 5, wherein the vibrating rod (110) is connected with the sliding rod (260) in a detachable and fixed manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920720667.7U CN210472338U (en) | 2019-05-20 | 2019-05-20 | Artificial hip joint ceramic lining oscillation extractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920720667.7U CN210472338U (en) | 2019-05-20 | 2019-05-20 | Artificial hip joint ceramic lining oscillation extractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210472338U true CN210472338U (en) | 2020-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920720667.7U Expired - Fee Related CN210472338U (en) | 2019-05-20 | 2019-05-20 | Artificial hip joint ceramic lining oscillation extractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210472338U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110074903A (en) * | 2019-05-20 | 2019-08-02 | 上海市浦东新区公利医院(第二军医大学附属公利医院) | Artificial Hip Joint Ceramic Lining Oscillation Extractor |
-
2019
- 2019-05-20 CN CN201920720667.7U patent/CN210472338U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110074903A (en) * | 2019-05-20 | 2019-08-02 | 上海市浦东新区公利医院(第二军医大学附属公利医院) | Artificial Hip Joint Ceramic Lining Oscillation Extractor |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200508 |