CN112120771A - Movable external fixing frame for traction hip joint - Google Patents
Movable external fixing frame for traction hip joint Download PDFInfo
- Publication number
- CN112120771A CN112120771A CN202011099398.0A CN202011099398A CN112120771A CN 112120771 A CN112120771 A CN 112120771A CN 202011099398 A CN202011099398 A CN 202011099398A CN 112120771 A CN112120771 A CN 112120771A
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- femur
- fixing
- fixing unit
- screw
- module
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Abstract
The invention discloses a movable traction hip joint external fixing frame which comprises an ilium fixing unit, a femur fixing unit and a middle rod, wherein the ilium fixing unit is connected with the middle rod through a hinge movable part; the femur fixing unit is connected with the middle rod through a slide rail movable part; the iliac bone fixing unit comprises an iliac crest fixing module and an anterior inferior iliac spine fixing module, and the femoral fixing unit comprises a femoral fixing module. The movable traction hip joint external fixing frame provided by the invention recovers and controls the femoral head eccentricity by arranging the fixing units on the ilium and the femur respectively, and resists the tendency of half dislocation of the femoral head; by drawing the thighbone, the stress of the femoral head is reduced, and the shortening of the limbs is corrected; the femoral head with serious dislocation is drawn to be close to the level of acetabulum, even the femoral head is reset, and the safety of hip joint replacement operation can be improved.
Description
Technical Field
The invention relates to the field of orthopedic fixation frame instruments, in particular to a movable traction hip joint external fixation frame.
Background
In the current orthopedic clinical treatment, if a patient has poor reduction after femoral neck or femoral head fracture, the load-bearing trabecula in the femoral head turns after healing, the bearing stress of a load-bearing area is reduced, stress injury occurs, and the patient is not uncomfortable during rehabilitation, but secondary femoral head necrosis or cartilage injury often occurs after rehabilitation load-bearing walking. Chronic alcoholism or glucocorticoid use can also cause femoral head necrosis. On the other hand, femoral head epiphyseal necrosis, also called femoral head necrosis, may occur in children's femoral head during development into a long term. Femoral head necrosis caused by the reasons, particularly young patients, often needs hip protection treatment, mainly takes core decompression, osteochondral repair reconstruction and the like as main treatment, and in the treatment and rehabilitation process, on one hand, femoral head pressure needs to be relieved, femoral head further collapse is prevented, and time is saved for osteochondral repair; on one hand, the tendency of the femoral head to pull out of the acetabulum needs to be prevented, the normal alignment relationship between the femoral head and the acetabulum needs to be recovered and maintained, and the eccentricity is controlled; on the other hand, the hip joint needs to be moved moderately regularly to prevent the joint from sticking or even becoming stiff. However, no device or technique for achieving the above object is currently available.
In addition, severe congenital acetabular dysplasia can cause complete dislocation of femoral head and severe shortening of limbs, and the replacement is difficult to perform when artificial joint replacement is performed without performing treatment such as trochanteric osteotomy, but the operation difficulty is high, the injury is large, and complications such as neurovascular injury are easy to occur. The existing literature reports that the femoral head can be drawn to the level close to the acetabulum before the operation by a lower limb traction means, so that the operation difficulty and risk are greatly reduced, and the treatment safety is improved. If the patient is dragged by the movable traction external hip joint fixing frame before operation, the patient can walk by holding up the crutch, the traction is more direct and powerful, the aim is achieved, and meanwhile, corresponding complications are avoided. However, no device or technique for achieving the above object is currently available.
Therefore, there is a need for a mobile distraction hip external fixator.
Disclosure of Invention
The invention provides a movable external fixing frame for a traction hip joint, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a movable traction external hip joint fixing frame is characterized by comprising an ilium fixing unit, a femur fixing unit and a middle rod, wherein the ilium fixing unit is connected with the middle rod through a hinge movable part; the femur fixing unit is connected with the middle rod through a slide rail movable part;
the iliac bone fixing unit comprises an iliac crest fixing module and an anterior inferior iliac spine fixing module, and the tail end of the rod part of the anterior inferior iliac spine fixing module is connected with the middle part of the rod part of the iliac crest fixing module; the head parts of the iliac crest fixing module and the anterior inferior iliac spine fixing module are respectively provided with at least one bone screw fixing element; the femur fixing unit comprises a femur fixing module, and at least one bone screw fixing element is arranged on the femur fixing module;
a hinge movable part for rotatably moving the femoral fixing unit with respect to the iliac fixing unit;
a slide rail moving part to move the femur fixing unit in a vertical direction with respect to the middle rod.
Further, at least one first bone screw is arranged on the iliac crest fixing module; the iliac crest fixation module is fixed to the iliac crest portion of the ilium by at least one first bone screw.
Furthermore, at least one second bone screw is arranged on the anterior-inferior iliac spine fixing module; the anterior inferior iliac spine fixing module is fixed on the anterior inferior iliac spine part of the ilium through at least one second bone screw.
Furthermore, at least one third bone screw is arranged on the femur fixing module; the femoral fixing module is fixed on the femoral stem of the femur and/or on an end remote from the femoral head by at least one third bone screw.
Further, the slide rail movable part comprises a slide rail and a slide block matched with the slide rail; the slide rail sets up in middle part pole lower part, and the slider can be fixed on the slide rail with moving about from top to bottom to fasten with the slide rail through first screw.
Furthermore, one end of the femur fixing module, which is close to the slide rail movable part, is provided with a groove for placing the lower part of the slide block; at least one limiting groove is formed in one pair of side walls of the groove, at least one second screw is arranged in the at least one limiting groove, and the sliding block is fixed in the groove through the at least one second screw;
the other side wall of the groove is provided with a fastening screw which is used for tightening to fasten the femur fixing unit relative to the slide block in the direction close to the femur.
Furthermore, the connecting groove is matched with the connecting tenon and is provided with a matched screw hole in a penetrating way;
a screw can be fixed in the screw hole, so that the connecting groove and the connecting tenon are connected firmly.
Furthermore, a connecting disc is fixed on the inner ring of the bearing, and an angle dial is fixed on the connecting disc; the connecting rod is fixed on the outer ring of the bearing, a pointer is fixed on the connecting rod, and the pointer and the axis of the connecting rod are positioned on the same horizontal plane.
Furthermore, the movable axis of the femur fixing unit rotating relative to the ilium fixing unit through the hinge movable part is on the same horizontal plane with the central line of the femur; the hinge movable part is opposite to the hip joint position at the connection part of the ilium and the femur.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
the movable external fixing frame for the traction hip joint is fixed on the ilium and the femur by using the bone screws respectively, and the bone screws are driven into the distal ends of the iliac crest, the anterior inferior iliac spine, the main femur and the femoral head of the ilium to fix the external fixing frame more stably; by the traction of the movable part of the sliding rail, the stress of the femoral head is relieved, the limb shortening is corrected, the eccentricity of the femoral head is recovered and controlled through the fixed module, and the tendency of the subluxation of the femoral head is resisted; the hip joint is permitted to perform single-plane flexion and extension movement on the premise of maintaining traction and eccentricity through the hinge movable part, so that the hip joint is prevented from being adhered and even stiff; the limb shortening of a patient with serious congenital hip joint dislocation is corrected by hip joint traction, so that the femoral head with serious dislocation is pulled to be close to the level of acetabulum, even reset, the shortening osteotomy under the rotor is avoided, the pain of the patient is reduced, and the safety of the hip joint replacement operation is improved.
Drawings
FIG. 1 is a schematic structural view of a hip joint external fixator provided by the present invention;
FIG. 2 is a schematic view of the use of the hip external fixator of the present invention for hip fixation;
FIG. 3 is a schematic side view of the hinge movable part structure of the external hip joint fixator provided in the present invention;
FIG. 4 is a schematic side view of the hinge movable part of the external hip joint fixator according to the present invention;
FIG. 5 is a schematic diagram of the side view of the dial and pointer of the hinge movable part in the external hip joint fixture according to the present invention;
wherein: 1-ilium fixing unit, 2-hinge movable part, 3-sliding rail sliding part, 4-femur fixing unit, 5-middle rod, 6-ilium, 7-femur, 11-iliac crest fixing module, 12-rod part, 13-first bone screw, 14-anterior inferior iliac crest fixing module, 15-second bone screw, 21-bearing, 22-connecting disk, 23-connecting rod, 24-connecting tenon, 25-connecting groove, 26-screw hole, 31-sliding rail, 32-sliding block, 33-first screw, 34-sliding groove, 35-second screw, 36-fastening screw, 41-femur fixing module, 42-third bone screw, 61-iliac crest, 62-anterior inferior iliac crest, 71-femoral head, 72-femoral trunk.
Detailed Description
The present invention will be described in detail and specifically with reference to the following examples to facilitate better understanding of the present invention, but the following examples do not limit the scope of the present invention.
It should be noted that the present invention relates to the field of orthopedic medical instruments, and the accompanying drawings are only schematic structural diagrams due to the complexity and certain differences of human hip bones, and need to be adjusted according to the actual bone structure in practical application, without affecting the spirit and scope of the technical scheme of the present invention.
Referring to fig. 1, the invention provides a movable traction external hip joint fixing frame, which comprises an ilium fixing unit 1, a femur fixing unit 4 and a middle rod 5, wherein the ilium fixing unit 1 is connected with the middle rod 5 through a hinge movable part 2; the femur fixing unit 4 is connected with the middle rod 5 through the slide rail movable part 3;
the iliac bone fixing unit comprises an iliac crest fixing module 11 and an anterior inferior iliac spine fixing module 14, and the tail end of the rod part of the anterior inferior iliac spine fixing module 14 is connected with the middle part of the rod part 12 of the iliac crest fixing module 11; the head parts of the iliac crest fixing module 11 and the anterior inferior iliac spine fixing module 14 are respectively provided with at least one bone screw fixing element; the femur fixing unit 4 comprises a femur fixing module 41, and at least one bone screw fixing element is arranged on the femur fixing module 41;
a hinge movable part 2 for rotatably moving the femoral fixing unit 4 relative to the iliac fixing unit 1;
a slide rail moving part 3 for moving the femur fixing unit 4 in a vertical direction with respect to the middle rod 5.
At least one first bone screw 13 is arranged on the iliac crest fixing module 11; the iliac crest fixation module 11 is fixed to the iliac crest 61 portion of the iliac bone 6 by at least one first bone screw 13.
At least one second bone screw 15 is arranged on the anterior inferior iliac spine fixing module 14; the anterior inferior iliac spine fixation module 14 is fixed to the anterior inferior iliac spine 62 portion of the ilium 6 by at least one second bone screw 15.
The femoral fixing module 41 is provided with at least one third bone screw 42, and the femoral fixing module 41 is fixed on the femoral trunk 72 of the femur 7 and on the end far from the femoral head 71 through the at least one third bone screw 42.
The iliac crest 61, the anterior inferior iliac spine 62, the femoral trunk 72 and the end far away from the femoral head 71 are respectively driven and fixed, so that the fixation of the iliac fixing unit 1 and the femoral fixing unit 4 is more firm, wherein one part of the iliac crest 61 and the anterior inferior iliac spine 62 can be selected to be driven with a bone screw, and the two parts can be driven with the bone screws for matching use, so that the technical effect of fixing the iliac fixing unit 1 can be realized.
The slide rail movable part 3 comprises a slide rail 31 and a slide block 32 matched with the slide rail; the slide rail 31 is disposed at the lower portion of the middle rod 5, and the slider 32 is fixed to the slide rail 31 to be movable up and down and fastened to the slide rail 31 by a first screw 33.
One end of the femur fixing module 41 close to the slide rail moving part 3 is provided with a groove for placing the lower part of the slide block 32; at least one limiting groove 34 is formed in one pair of side walls of the groove, at least one second screw 35 is arranged in at least one limiting groove 34, and the sliding block 32 is fixed in the groove through at least one second screw 35;
the other side wall of the recess is provided with a tightening screw 36, which tightening screw 36 is used to tighten the femoral fixing unit 4 relative to the slide 32 in a direction towards the femur 6.
When the traction force far away from the ilium fixing unit 1 is needed to be adjusted to the femur fixing unit 4, only the fastening screw 36 needs to be unscrewed, the slide block 32 is pushed towards one end far away from the ilium fixing unit 1 along the slide rail 31, and the femur fixing unit 4 can be adjusted downwards by a certain proper distance, so that the external fixing frame has the traction force far away from the ilium 6 to the femur 7 in the vertical direction, and the pressure borne by the femoral head 71 is favorably reduced.
When the femur fixing unit 4 needs to be adjusted towards the direction close to the femur 7 to adjust and control the femoral offset, only the fastening screws 36 and all the second screws 35 need to be loosened to adjust the femur fixing module towards the horizontal direction close to the femur, at the moment, the second screws 35 move correspondingly in the limiting grooves, all the second screws 35 are screwed after the adjustment is finished, and then the fastening screws 36 are screwed, so that the femoral offset can be effectively controlled and recovered within a certain range to resist the femoral head subluxation tendency.
As shown in fig. 3, the hinge moving part 2 includes a bearing 21; a connecting disc 22 and a connecting groove 25 are extended from the lower part of the rod part 12 in parallel; a connecting rod 23 and a connecting tenon 24 extend out of the upper part of the middle rod 5 in parallel; the connecting disc 22 and the connecting rod 23 are matched and connected by the bearing 21.
Different from femoral fracture patients, in the rehabilitation process, hip joint dislocation and femoral head necrosis patients still need to move the hip joint to a certain extent, and long-term inactivity can cause hip joint adhesion and even stiffness of the patients and influence hip movement.
The connecting groove 25 is matched with the connecting tenon 24 and is provided with a matched screw hole 26 in a penetrating way; a screw can be fixed in the screw hole 26 to tightly connect the connecting groove 24 and the connecting tongue 25.
The fixing device is characterized in that the fixing device comprises an ilium fixing unit 1, a sliding rail movable part 3 and a femur fixing unit 4 which are fixed through a screw fixing connecting groove 25 and a connecting tenon 24, when joint exercise activities are needed, such as loosening and removing the screw every noon or evening, the sliding rail movable part 3 and the femur fixing unit 4 can perform uniplanar flexion and extension activities relative to the ilium fixing unit 1 on the premise of maintaining traction force and femur eccentricity, the activity time can be set to any time, for example, 15 minutes to one hour, after the exercise activities are finished, a patient puts down thighs, the connecting tenon 24 is meshed with the connecting groove 25, and then the screw is fixed in a screw hole 26, so that the sliding rail movable part 3 and the femur fixing unit 4 can be connected and fixed relative to the ilium fixing unit 1.
As shown in fig. 5, the connecting disc 22 is fixed on the inner ring of the bearing 21, and an angle dial 28 is fixed on the connecting disc 22; the connecting rod 23 is fixed on the outer ring of the bearing 21, a pointer 27 is fixed on the connecting rod, and the axial lead of the pointer 27 and the axial lead of the connecting rod 23 are positioned on the same horizontal plane. Through the angle dial 28 and the pointer 27, the movement of the connecting rod 23 is synchronous with the movement of the pointer 27, so that the movement angles of the femur fixing unit 4 and the slide rail movable part 3 relative to the ilium fixing unit 1 can be visually observed, the regulation during hip joint exercise is facilitated, and the damage caused by too large movement range is avoided.
The movable axis of the femur fixing unit 4 rotating relative to the ilium fixing unit 1 through the hinge movable part 2 is on the same horizontal plane with the central line of the femur 6; the hinge moving part 2 is opposite to the hip joint position at the connection part of the ilium 5 and the femur 6.
The movable axis line of the rotation of the femur fixing unit 4 and the central line of the femur 6 are in the same horizontal plane, so that the femur fixing unit 4 can move coaxially when moving in a single plane relative to the ilium fixing unit 1; the technical scheme can be controlled through intraoperative perspective.
In the use process of the movable traction hip joint external fixing frame provided by the invention, as shown in fig. 2, a patient is generally in a supine position, a plurality of small incisions are cut at the thigh and the ilium of the patient, and the number of the small incisions is based on the number of the used bone screws; the size of the small incision is based on the implantation position of the bone screw on the femur and the ilium after subcutaneous tissues and muscles are separated, the bone screw needs to be implanted in an intraoperative X-ray transmission auxiliary manner if necessary, the bone screw is implanted into a protective sleeve and clamped on the bone surface of an implantation opening in the implantation process, and then a hole is drilled in the bone and the screw is screwed in under the monitoring of X-ray transmission; after the bone screw is implanted, the bone screw is fixed on the fixed frame, the movable part of the slide rail is adjusted according to the dislocation of the hip joint of the patient and the eccentric distance of the femur, and the second screw and the fastening screw are adjusted to lead the second screw and the fastening screw to draw the femur fixing unit and control the eccentric distance. Through the traction module, the thighbone is pulled towards the far side, the stress of the thighbone is relieved, and the shortening of the limbs is corrected.
The method for mounting the components such as the bone screw, the bearing, the slide rail and the like in the invention is well known in the art, and the invention does not focus on the improvement of the mounting mode of the components and is not described herein.
The movable traction hip joint external fixing frame provided by the invention recovers and controls the femoral head eccentricity through the ilium fixing unit and the femoral fixing unit, and resists the tendency of femoral head subluxation; the hip joint is permitted to perform flexion and extension movements in a single plane on the premise of maintaining traction and eccentricity through the hinge movable part, so that the hip joint is prevented from being adhered and even stiff; for the serious congenital hip joint dislocation patient, the limb shortening is corrected through the hip joint traction, the femoral head with the serious dislocation is pulled to be close to the level of the acetabulum, even the femoral head is reset, the shortening osteotomy under the trochanter is avoided, the pain of the patient is reduced, and the safety of the hip joint replacement operation is improved.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the embodiments described above. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (10)
1. A movable traction external hip joint fixing frame is characterized by comprising an ilium fixing unit (1), a femur fixing unit (4) and a middle rod (5), wherein the ilium fixing unit (1) is connected with the middle rod (5) through a hinge movable part (2); the femur fixing unit (4) is connected with the middle rod (5) through a slide rail movable part (3);
the iliac bone fixing unit comprises an iliac crest fixing module (11) and an anterior inferior iliac spine fixing module (14), and the tail end of the rod part of the anterior inferior iliac spine fixing module (14) is connected to the middle part of the rod part (12) of the iliac crest fixing module (11); the head parts of the iliac crest fixing module (11) and the anterior inferior iliac spine fixing module (14) are respectively provided with at least one bone screw fixing element; the femur fixing unit (4) comprises a femur fixing module (41), and at least one bone screw fixing element is arranged on the femur fixing module (41);
the hinge movable part (2) is used for enabling the femur fixing unit (4) to rotate and move relative to the ilium fixing unit (1);
the sliding rail moving part (3) is used for enabling the femur fixing unit (4) to move in the vertical direction relative to the middle rod (5).
2. The external hip fixation according to claim 1, characterized in that at least one first bone screw (13) is provided on the head of the iliac crest fixation module (11); the iliac crest fixing module (11) is fixed on the iliac crest (61) part of the iliac (6) through at least one first bone screw (13).
3. External fixator according to claim 1, characterized in that the head of the anterior-inferior iliac fixing module (14) is provided with at least one second bone screw (15); the anterior inferior iliac spine fixing module (14) is fixed on the anterior inferior iliac spine (62) part of the ilium (6) through at least one second bone screw (15).
4. The external fixation frame of the hip joint according to claim 1, characterized in that at least one third bone screw (42) is provided on the femoral fixation block (41); the femoral fixing module (41) is fixed on the femoral stem (72) and/or on the end far away from the femoral head (71) of the femur (7) by at least one third bone screw (42).
5. The external hip fixation according to claim 1, characterized in that the sliding rail moving part (3) comprises a sliding rail (31) and a sliding block (32) matching with the sliding rail; the sliding rail (31) is arranged on the lower portion of the middle rod (5), and the sliding block (32) can be movably fixed on the sliding rail (31) up and down and is fastened with the sliding rail (31) through a first screw (33).
6. The external hip fixation frame according to claim 5, wherein the femur fixation module (41) is provided with a groove for placing the lower part of the sliding block (32) at one end close to the sliding rail moving part (3); at least one limiting groove (34) is formed in one pair of side walls of the groove, at least one second screw (35) is arranged in at least one limiting groove (34), and the sliding block (32) is fixed in the groove through at least one second screw (35);
the other side wall of the groove is provided with a fastening screw (36), and the fastening screw (36) is used for tightening to fasten the femur fixing unit (4) to the slide block (32) in the direction close to the femur (6).
7. The external hip fixation according to claim 1, characterized in that the hinge mobile part (2) comprises a bearing (21);
a connecting disc (22) and a connecting groove (25) extend out of the lower part of the rod part (12) in parallel; a connecting rod (23) and a connecting tenon (24) extend out of the upper part of the middle rod (5) in parallel; the connecting disc (22) is matched with the connecting rod (23) and is connected through the bearing (21).
8. The external hip fixation frame according to claim 7, wherein the connecting slots (25) and the connecting tongues (24) are matched and each have a matching screw hole (26) drilled therethrough;
a screw can be fixed in the screw hole (26) to enable the connecting groove (24) and the connecting tenon (25) to be tightly connected.
9. The external hip fixation according to claim 7, characterized in that the connection disc (22) is fixed to the inner ring of the bearing (21), an angle dial (28) being fixed to the connection disc (22); the connecting rod (23) is fixed on the outer ring of the bearing (21), a pointer (27) is fixed on the connecting rod, and the axial leads of the pointer (27) and the connecting rod (23) are located on the same horizontal plane.
10. The external hip fixation frame according to claim 1, wherein the movable axis of rotation of the femur fixation unit (4) relative to the ilium fixation unit (1) through the hinge movable part (2) is on the same horizontal plane as the centerline of the femur (7); the hinge movable part (2) is opposite to the hip joint position at the joint of the ilium (6) and the femur (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011099398.0A CN112120771A (en) | 2020-10-14 | 2020-10-14 | Movable external fixing frame for traction hip joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011099398.0A CN112120771A (en) | 2020-10-14 | 2020-10-14 | Movable external fixing frame for traction hip joint |
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| Publication Number | Publication Date |
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| CN112120771A true CN112120771A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011099398.0A Pending CN112120771A (en) | 2020-10-14 | 2020-10-14 | Movable external fixing frame for traction hip joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367847A (en) * | 2021-05-22 | 2021-09-10 | 北京力达康科技有限公司 | Osteolysis treatment fixing prosthesis |
-
2020
- 2020-10-14 CN CN202011099398.0A patent/CN112120771A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113367847A (en) * | 2021-05-22 | 2021-09-10 | 北京力达康科技有限公司 | Osteolysis treatment fixing prosthesis |
| CN113367847B (en) * | 2021-05-22 | 2022-06-10 | 北京力达康科技有限公司 | Osteolysis treatment fixing prosthesis |
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