CN210990662U - Minimally invasive steel plate screw internal fixing device for fixing ilium wing and acetabulum column - Google Patents
Minimally invasive steel plate screw internal fixing device for fixing ilium wing and acetabulum column Download PDFInfo
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- CN210990662U CN210990662U CN201921078525.1U CN201921078525U CN210990662U CN 210990662 U CN210990662 U CN 210990662U CN 201921078525 U CN201921078525 U CN 201921078525U CN 210990662 U CN210990662 U CN 210990662U
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Abstract
The utility model discloses a minimally invasive steel plate screw internal fixation device for fixing iliac wing and acetabular column, comprising a first fixed steel plate, a second fixed steel plate and a locking screw, wherein the first fixed steel plate and the second fixed steel plate are respectively hinged together by taking the middle as a movable fulcrum; two ends of the first fixing steel plate and the second fixing steel plate are respectively provided with two iliac spine screw holes and an iliac spine pressurizing and locking hole. The utility model discloses a fixing device adopts two steel sheets to articulate with the X-shaped together, combines together with locking screw, can provide more firm fixed, controls the dynamic height, can effectively solve the problem of middle-aged and old pelvis fracture patient because of osteoporosis, sclerotin are relatively poor, the easy not hard up roll-off of set screw.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to a minimally invasive steel sheet screw internal fixation device for fixing ilium wing and acetabular bone post.
Background
Pelvic fractures or fractures of the acetabular column, which are the most severe fractures affecting patient life safety and quality of life, often require surgical treatment. The classic surgical treatment method is incision reduction and steel plate screw internal fixation. For the incision reduction method, the traditional incision operation can obviously expose the fracture part, but the operation range is large, the soft tissue damage is heavy, the operation time is long, the bleeding is much, and serious vascular nerves (such as femoral artery, inferior epigastric artery, dead coronary, femoral nerve, lateral femoral cutaneous nerve and the like) can be damaged. Minimally invasive surgical approaches and techniques are clinically needed. For the steel plate screw internal fixation method, the traditional fixation technology can be implanted under direct vision, but the operation time is prolonged due to the special shape of the fracture part and repeated pre-bending; in addition, the difficulty in holding the direction of the fracture due to the depth of the fracture is a difficult problem for orthopedists.
Pelvic fracture or fracture involving the acetabulum column mostly causes huge brute force injuries such as falling injury, extrusion injury or automobile accident injury, and often combines wounds of other parts, so the general state of the whole body is poor. In order to save operation time and reduce operation difficulty and risk, a fixing instrument which is simple, convenient, rapid and minimally invasive to operate is clinically needed. The pelvis fracture or the fracture involving the acetabulum column which needs to be treated is often comminuted fracture of the ilium wing, and the common fixing machine cannot realize good fixation. For example, a single steel plate does not have good holding force and torsion resistance, and usually needs to be fixed in an auxiliary manner or to prolong the bedtime in a roped manner, so that the requirement of getting on ground or carrying a load in an early stage cannot be met. This requires two or more steel plates or other means to enhance fixation, and multiple fixation mechanisms to achieve fixation necessarily lengthen the surgical incision, increase bleeding, muscle tissue traction, soft tissue injury, etc.
In recent years, the fixing machines which are gradually raised mainly comprise a pelvis external frame, an internal external frame, a steel plate screw system and the like, wherein the pelvis external frame and the internal external frame have the advantages of improving the traditional operation, but the external frame influences the turning over, the defecation and the urination of a patient, the needle path nursing and the needle path infection, and the work of clinical workers is greatly increased by the dismantling of the external frame. In contrast, the fixation of steel plate screws attached to the bone surface has some advantages. At present, China gradually enters an aging society, the pelvis fracture and the fracture of the acetabulum column of the osteoporotic old are gradually increased, and biomechanics and clinical reports prove that the ilium bone of the old is the most ideal nail placing part, the upper spine and the lower spine around the ilium are selected firstly, the false pelvic edge (namely the ilium wing) and the real pelvic edge are selected secondly, otherwise, the screw can be cut, pulled out and even fall off, but the pelvis fracture and the fracture block of the acetabulum column of the old are deep and complex and are brittle fracture, so that the problem of how to accurately implant the screw into the bone block and the area with better bone is solved in the current operation. In addition, incision procedures within the artificial and true pelvic margins require clinicians to have extensive dissection, surgery and X-ray fluoroscopy experience, with long learning curves. Moreover, most of the existing steel plate screw systems are fixed by a single steel plate screw or a parallel steel plate screw, and although the existing steel plate screw systems have certain anti-rotation and anti-withdrawal functions, the existing steel plate screw systems still cannot meet the requirements of early bearing and functional rehabilitation training of patients.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: aiming at the defects in the prior art, the minimally invasive steel plate screw internal fixing device for fixing the ilium wing and the acetabulum column is provided, the fixing device can provide more stable fixation, the holding force is high, and the problems that middle-aged and old pelvis fracture patients are poor in bone quality due to osteoporosis and easy to loosen and slide out of fixing screws can be effectively solved.
In order to solve the technical problem, the technical scheme of the utility model is that:
a minimally invasive steel plate screw internal fixation device for fixing iliac wing and acetabular column comprises a first fixed steel plate, a second fixed steel plate and a locking screw, wherein the first fixed steel plate and the second fixed steel plate are hinged together by taking the middle as a movable fulcrum; two ends of the first fixing steel plate and the second fixing steel plate are respectively provided with two iliac spine screw holes and an iliac spine pressurizing and locking hole.
As a preferred technical scheme, the first fixed steel plate and the second fixed steel plate are anatomical fixed steel plates; the movable angle of the first fixed steel plate and the second fixed steel plate is 0-45 degrees; the X-shaped folding bag is in an X shape after being unfolded and is in a straight shape when being closed.
As an improved technical scheme, the first fixed steel plate and the second fixed steel plate are titanium alloy steel plates; the locking screw is a titanium alloy locking screw; the surfaces of the first fixing steel plate, the second fixing steel plate and the locking screw are provided with an anodized Cu-Ni coating or an anodized Cu-Cr coating.
As a preferable technical scheme, one or more iliac plate pressurizing and locking holes are further arranged between the iliac spine pressurizing and locking holes at the two ends of the first fixing steel plate and the second fixing steel plate and the hinge joint of the steel plates.
As a preferable technical solution, the thickness of the first fixed steel plate and the second fixed steel plate is 3.5-4.5 mm; the locking screws comprise iliac spine locking screws, iliac spine pressurizing locking screws and iliac plate pressurizing locking screws; the length of the iliac spine locking screw is 30-60mm, and the length of the iliac spine compression locking screw and the length of the iliac plate compression locking screw are both 15-35 mm.
As a preferable technical scheme, the iliac spine screw hole, the iliac spine pressurizing and locking hole, the iliac plate pressurizing and locking screw hole, the iliac spine locking screw, the iliac spine pressurizing and locking screw and the iliac plate pressurizing and locking screw are respectively provided with a thread correspondingly.
As a preferred technical solution, two ends of the first fixed steel plate and the second fixed steel plate are respectively provided with a vertical part in the same rotation direction; the first fixed steel plate and the second fixed steel plate are respectively provided with a bending part at the upper part of the vertical part; the end of the bending part is provided with a fillet, and the joint of the bending part and the steel plate is provided with a concave angle.
As an improved technical scheme, the two iliac spine screw holes respectively comprise a first iliac spine screw hole arranged on the bending part and a second iliac spine screw hole positioned on the vertical part; the iliac spine pressurizing and locking hole is vertically and triangularly distributed with the first iliac spine screw hole and the second iliac spine screw hole.
As an improved technical scheme, the diameters of the first iliac spine screw hole and the second iliac spine screw hole are 4-5 mm.
Since the technical scheme is used, the beneficial effects of the utility model are that:
the minimally invasive steel plate screw internal fixing device for fixing the ilium wing and the acetabulum column comprises a first fixing steel plate, a second fixing steel plate and a locking screw, wherein the first fixing steel plate and the second fixing steel plate are respectively hinged together by taking the middle as a movable fulcrum; two ends of the first fixing steel plate and the second fixing steel plate are respectively provided with two iliac spine screw holes and an iliac spine pressurizing and locking hole; still be equipped with one or more iliac bone board pressurization locking hole between the iliac spine pressurization locking hole at first fixed steel sheet, the fixed steel sheet both ends of second and the articulated department of steel sheet for the iliac bone planking is obeyed more to fixed steel sheet, and internal fixation device's anti-rotation, shearing resistance are also effectively improved moreover. The fixing steel plate in the internal fixing device of the utility model can be moved, can be closed or unfolded, has small volume, can be implanted in a percutaneous minimally invasive way, and has small damage; the internal fixing device is equivalent to the fixation and intersection of double steel plates, and the supporting strength, the anti-rotation strength and the anti-pulling strength are all greater than those of the fixation of a single steel plate or the parallel fixation of the double steel plates. The iliac spine screw hole, the iliac spine pressurizing and locking hole and the iliac spine pressurizing and locking hole are provided with corresponding threads, so that the locking screw is locked and combined with the fixing steel plate, and the fixing stability is improved to a certain degree.
The utility model discloses a first fixed steel sheet and the both ends of second fixed steel sheet in the minimally invasive steel sheet screw internal fixation device for fixing ilium wing and acetabular bone post are equipped with kink and vertical portion respectively, the both ends of first fixed steel sheet and second fixed steel sheet are equipped with two ilium spine screw holes and an ilium spine pressurization locking hole respectively, two ilium spine screw holes include the first ilium spine screw hole that is located the kink and the second ilium spine screw hole that is located the vertical portion; the iliac spine pressurizing and locking hole is vertically distributed with the first iliac spine screw hole and the second iliac spine screw hole in a triangular manner; when the fixation is carried out, a first iliac spine locking screw can be implanted into a first iliac spine screw hole positioned on the bending part, and the first iliac spine locking screw enters the iliac spine in parallel; a second iliac spine locking screw and an iliac spine pressurizing and locking screw can be respectively implanted into the second iliac spine screw hole and the iliac spine pressurizing and locking holes at the two ends of the fixing steel plate; the second iliac spine locking screw and the iliac spine pressurizing locking screw vertically enter the iliac spine, so that fixation in different planes and different directions is realized, the holding force of internal fixation is further enhanced, the holding force and the anti-failure strength of the screw are improved, and the fixation failure rate of the elderly patients with osteoporosis and poor bone quality can be reduced. The utility model is used for fixed ilium wing and the internal fixing device of minimally invasive steel sheet screw of acetabular bone post, fixed position are the ilium planking, can effectively avoid pelvis the place ahead, important vascular nerve and organ in the pelvis.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the utility model when folded;
FIG. 2 is a schematic view of the present invention in its expanded configuration;
FIG. 3 is a schematic view of the distribution of the fixing screws in the ilium when the minimally invasive steel plate screw internal fixing device for fixing the ilium wing and the acetabulum column of the invention is fixed;
in the figure, 1, a first fixed steel plate; 2. a first iliac spine screw hole; 3. a second iliac spine screw hole; 4. iliac spine pressurization locking hole; 5. the ilium plate is pressed and locked by the screw; 6. a second fixed steel plate; 7. a movable fulcrum; 8. a vertical portion; 9. a bending section; 10. a reentrant angle; 11. anterior superior iliac spine; 12. anterior inferior iliac spine; 13. posterior superior iliac spine; 14. posterior iliac inferior spine; 15. a first iliac spine locking screw; 16. a second iliac spine locking screw; 17. the iliac spine pressurizes the locking screw.
Detailed Description
The invention is further explained below with reference to the drawings and examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
As shown in fig. 1 and 2, the minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column comprises a first fixed steel plate 1, a second fixed steel plate 6 and a locking screw, wherein the first fixed steel plate 1 and the second fixed steel plate 6 respectively use the middle as a movable fulcrum 7; the first fixed steel plate 1 and the second fixed steel plate 6 are hinged together through a movable fulcrum 7; the movable angle of the first fixed steel plate 1 and the second fixed steel plate 6 is 0-45 degrees, the first fixed steel plate is X-shaped after being unfolded, and the second fixed steel plate is in a straight line shape after being closed; for single steel sheet or two steel sheet parallel fixation, have better support intensity, resistance to plucking intensity, mobilizable steel sheet can cover multiple broken bone line condition moreover. The two ends of the first fixed steel plate 1 and the second fixed steel plate 6 respectively comprise a vertical part 8 and a bending part 9; two ends of the first fixing steel plate 1 and the second fixing steel plate 6 are respectively provided with two iliac spine screw holes and an iliac spine pressurizing and locking hole; the first iliac spine screw holes 2 are respectively arranged on the bending parts 9 of the first fixing steel plate 1 and the second fixing steel plate 6; the second iliac spine screw hole 3 positioned on the vertical part 8 of the first fixing steel plate 1 and the second fixing steel plate 6 and the iliac spine pressurizing and locking hole 4 vertically distributed in a triangular mode with the first iliac spine screw hole 2 and the second iliac spine screw hole 3 improve the fixing stability of the internal fixing device. One or more iliac plate pressurizing and locking holes 5 are also arranged between the iliac spine pressurizing and locking holes 4 at the two ends of the first fixing steel plate 1 and the second fixing steel plate 6 and the movable fulcrum 7, so that the stability of internal fixation is further enhanced.
The utility model discloses in the minimal access steel sheet screw internal fixation device for fixing ilium wing and acetabular bone post, the bending parts 9 at both ends of the first fixing steel sheet 1 and the second fixing steel sheet 6 are provided with fillets, which is more convenient for the installation of the internal fixation device, and can effectively reduce the injury of the internal fixation device to the muscles near the fixed part when being implanted; the bent part is provided with a concave angle 10 at the joint with the fixed steel plate, so that the steel plate can be bent more conveniently during fixing.
In the minimally invasive steel plate screw internal fixing device for fixing the ilium wing and the acetabulum column, ilium spine locking screws with the diameter of 4-5mm are respectively implanted into the first ilium spine screw hole 2 and the second ilium spine screw hole 3; an iliac spine compression locking screw with the diameter of 2.5-3.5mm is implanted in the iliac spine compression locking hole 4; iliac plate pressurizing and locking screws with the diameter of 2.5-3.5mm are selectively implanted into one or more iliac plate pressurizing and locking holes arranged between the iliac spine pressurizing and locking holes 4 at the two ends of the first fixing steel plate 1 and the second fixing steel plate 6 and the movable fulcrum 7, so that the fixing steel plates can be better attached to an outer iliac plate, the fixing stability of the internal fixing device is further improved, the implanted locking screws and the corresponding threads are arranged in the screw holes, the first fixing steel plate, the second fixing steel plate and the locking screws are locked and combined, and the rotation resistance and the shearing resistance of the internal fixing device are increased.
Example 1
The minimally invasive steel plate screw internal fixing device for fixing the ilium wing and the acetabulum column comprises a first fixing steel plate 1, a second fixing steel plate 6 and a locking screw, wherein the first fixing steel plate 1 and the second fixing steel plate 6 respectively use the middle as a movable fulcrum 7; the first fixed steel plate 1 and the second fixed steel plate 6 are hinged together through a movable fulcrum 7; the movable angle of the first fixed steel plate 1 and the second fixed steel plate 6 is 0-45 degrees, the first fixed steel plate is X-shaped after being unfolded, and the second fixed steel plate is in a straight line shape when being closed; the two ends of the first fixed steel plate 1 and the second fixed steel plate 6 respectively comprise a vertical part 8 and a bending part 9; two ends of the first fixing steel plate 1 and the second fixing steel plate 6 are respectively provided with two iliac spine screw holes and an iliac spine pressurizing and locking hole; the fixing device comprises a first iliac spine screw hole 2 arranged on a bending part 9 of the first fixing steel plate 1 and the second fixing steel plate 6, a second iliac spine screw hole 3 arranged on a vertical part 8 of the first fixing steel plate 1 and the second fixing steel plate 6, and iliac spine pressurizing and locking holes 4 vertically distributed in a triangular mode with the first iliac spine screw hole 2 and the second iliac spine screw hole 3; locking screws with the diameter of 4.5mm are respectively implanted into the first iliac spine screw hole 2 and the second iliac spine screw hole 3; a locking screw with the diameter of 3.5mm is implanted into the iliac spine pressurizing and locking hole 4; one or more iliac plate pressurizing and locking holes 5 are also arranged between the iliac spine pressurizing and locking holes 4 at the two ends of the first fixing steel plate 1 and the second fixing steel plate 6 and the movable fulcrum 7; and locking screws with the diameter of 3.5mm are selectively implanted into the iliac plate pressurizing and locking holes.
Example 2
The minimally invasive steel plate screw internal fixing device for fixing the ilium wing and the acetabulum column comprises a first fixing steel plate 1, a second fixing steel plate 6 and a locking screw, wherein the first fixing steel plate 1 and the second fixing steel plate 6 respectively use the middle as a movable fulcrum 7; the first fixed steel plate 1 and the second fixed steel plate 6 are hinged together through a movable fulcrum 7; the movable angle of the first fixed steel plate 1 and the second fixed steel plate 6 is 0-45 degrees, the first fixed steel plate is X-shaped after being unfolded, and the second fixed steel plate is in a straight line shape when being closed; the two ends of the first fixed steel plate 1 and the second fixed steel plate 6 respectively comprise a vertical part 8 and a bending part 9; two ends of the first fixing steel plate 1 and the second fixing steel plate 6 are respectively provided with two iliac spine screw holes and an iliac spine pressurizing and locking hole; the fixing device comprises a first iliac spine screw hole 2 arranged on a bending part 9 of the first fixing steel plate 1 and the second fixing steel plate 6, a second iliac spine screw hole 3 arranged on a vertical part 8 of the first fixing steel plate 1 and the second fixing steel plate 6, and iliac spine pressurizing and locking holes 4 vertically distributed in a triangular mode with the first iliac spine screw hole 2 and the second iliac spine screw hole 3; locking screws with the diameter of 5mm are respectively implanted into the first iliac spine screw hole 2 and the second iliac spine screw hole 3; a locking screw with the diameter of 3mm is implanted into the iliac spine pressurizing and locking hole 4; one or more iliac spine pressurizing and locking holes 5 are also arranged between the iliac spine pressurizing and locking holes 4 at the two ends of the first fixing steel plate 1 and the second fixing steel plate 6 and the movable fulcrum 7; and a locking screw with the diameter of 3mm is selectively implanted into the iliac spine pressurizing and locking hole.
As shown in fig. 3, when the minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column is fixed, the two fixing steel plates of the internal fixation device are firstly closed to form a straight line shape and enter from the gap between the muscle layer and the ilium outer plate; when the fixing position is reached, the fixing steel plate is unfolded to form an X shape, and then a first iliac spine locking screw 15 with the diameter of 4.5mm is implanted into a first iliac spine screw hole 2, which is positioned on the bending part 9, at two ends of the first fixing steel plate 1 and the second fixing steel plate 6; first iliac spine locking screws 15 at two ends of the first fixing steel plate 1 and the second fixing steel plate 6 respectively enter anterior superior iliac spine 11, anterior inferior iliac spine 12, posterior superior iliac spine 13 and posterior inferior iliac spine 14 in parallel under the bending of the bending part 9; a second iliac spine locking screw 16 with the diameter of 4.5mm is implanted into a second iliac spine screw hole 3 positioned on the vertical part 8 at the two ends of the first fixing steel plate 1 and the second fixing steel plate 6; the second iliac spine locking screw 16 vertically enters the anterior superior iliac spine 11, the anterior inferior iliac spine 12, the posterior superior iliac spine 13 and the posterior inferior iliac spine 14 respectively; iliac spine pressurizing and locking screws 17 with the diameter of 3mm are implanted into iliac spine pressurizing and locking holes 4 which are positioned at two ends of a first fixing steel plate 1 and a second fixing steel plate 6 and vertically distributed with a first iliac spine screw hole 2 and a second iliac spine screw hole 3 in a triangular manner, and the iliac spine pressurizing and locking screws 17 vertically enter an anterior superior iliac spine 11, an anterior inferior iliac spine 12, a posterior superior iliac spine 13 and a posterior inferior iliac spine 14 respectively; the fixing of different planes and different directions is realized, so that the holding force and the anti-failure strength of the screw are enhanced.
Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (9)
1. The utility model provides a minimal invasion steel plate screw internal fixation device for fixing ilium wing and acetabular bone post which characterized in that: the locking device comprises a first fixed steel plate, a second fixed steel plate and a locking screw, wherein the first fixed steel plate and the second fixed steel plate are hinged together by taking the middle as a movable fulcrum; two ends of the first fixing steel plate and the second fixing steel plate are respectively provided with two iliac spine screw holes and an iliac spine pressurizing and locking hole.
2. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column according to claim 1, wherein: the first fixed steel plate and the second fixed steel plate are anatomical fixed steel plates; the movable angle of the first fixed steel plate and the second fixed steel plate is 0-45 degrees; the X-shaped folding bag is in an X shape after being unfolded and is in a straight shape when being closed.
3. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column according to claim 1, wherein: the first fixed steel plate and the second fixed steel plate are titanium alloy steel plates; the locking screw is a titanium alloy locking screw; and the surfaces of the first fixing steel plate, the second fixing steel plate and the locking screw are provided with Cu-Ni coatings or Cu-Cr coatings.
4. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column according to claim 1, wherein: one or more iliac plate pressurizing and locking holes are also arranged between the iliac spine pressurizing and locking holes at the two ends of the first fixing steel plate and the second fixing steel plate and the hinged part of the steel plates.
5. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column in claim 4, wherein: the thicknesses of the first fixed steel plate and the second fixed steel plate are 3.5-4.5 mm; the locking screws comprise iliac spine locking screws, iliac spine pressurizing locking screws and iliac plate pressurizing locking screws; the length of the iliac spine locking screw is 30-60mm, and the length of the iliac spine compression locking screw and the length of the iliac plate compression locking screw are both 15-35 mm.
6. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column in claim 5, wherein: the iliac spine screw hole, the iliac spine pressurizing and locking hole and the iliac plate pressurizing and locking hole are correspondingly provided with threads with the iliac spine locking screw, the iliac spine pressurizing and locking screw and the iliac plate pressurizing and locking screw.
7. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column according to claim 1, wherein: two ends of the first fixed steel plate and the second fixed steel plate are respectively provided with a vertical part in the same rotating direction; the first fixed steel plate and the second fixed steel plate are respectively provided with a bending part at the upper part of the vertical part; the end of the bending part is provided with a fillet, and the joint of the bending part and the steel plate is provided with a concave angle.
8. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column in claim 7, wherein: the two iliac spine screw holes respectively comprise a first iliac spine screw hole arranged on the bending part and a second iliac spine screw hole positioned on the vertical part; the iliac spine pressurizing and locking hole is vertically and triangularly distributed with the first iliac spine screw hole and the second iliac spine screw hole.
9. The minimally invasive steel plate screw internal fixation device for fixing the ilium wing and the acetabulum column according to claim 8, wherein: the diameters of the first iliac spine screw hole and the second iliac spine screw hole are 4-5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078525.1U CN210990662U (en) | 2019-07-11 | 2019-07-11 | Minimally invasive steel plate screw internal fixing device for fixing ilium wing and acetabulum column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921078525.1U CN210990662U (en) | 2019-07-11 | 2019-07-11 | Minimally invasive steel plate screw internal fixing device for fixing ilium wing and acetabulum column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210990662U true CN210990662U (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921078525.1U Expired - Fee Related CN210990662U (en) | 2019-07-11 | 2019-07-11 | Minimally invasive steel plate screw internal fixing device for fixing ilium wing and acetabulum column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210990662U (en) |
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2019
- 2019-07-11 CN CN201921078525.1U patent/CN210990662U/en not_active Expired - Fee Related
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Granted publication date: 20200714 Termination date: 20210711 |