CN212281785U - Nail plate-fusion cage composite system suitable for ACAF - Google Patents
Nail plate-fusion cage composite system suitable for ACAF Download PDFInfo
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- CN212281785U CN212281785U CN202020508953.XU CN202020508953U CN212281785U CN 212281785 U CN212281785 U CN 212281785U CN 202020508953 U CN202020508953 U CN 202020508953U CN 212281785 U CN212281785 U CN 212281785U
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Abstract
The utility model discloses a nail board-integration ware combined system suitable for ACAF, it includes the fixed plate and installs the last integration ware on the fixed plate, fuse ware, carry and draw screw, locking screw down, the fixed plate is the both ends and enlarges, the constrictive dumbbell shape's in centre platelike, is equipped with in the center department of fixed plate and carries and draw the screw, carries on the fixed plate and draws the screw both sides and respectively be equipped with a slip slot, the both ends of fixed plate respectively be equipped with two locking screws, go up the integration ware, fuse the ware down and pass the slip slot through locking screw respectively and fix on the fixed plate, carry and draw the screw to pass and draw the screw and install on the fixed plate, locking screw be equipped with a plurality ofly, install on the fixed plate through screw and locking screw cooperation respectively. The utility model can reconstruct the physiological curvature and stability of the cervical vertebra operation part, and is convenient to operate and easy to implant.
Description
Technical Field
The utility model relates to a medical false body manufacturing technical field specifically is to a nail board-integration ware combined system suitable for ACAF.
Background
Posterior cervical ossification of longitudinal ligament (OPLL) is an ectopic ossification disease occurring in the posterior cervical tissue of longitudinal ligament, which has a high incidence in east asian population, and the literature reports that the incidence is 1.9% to 4.3% in japanese population aged over 30 years, 3.6% in korea, and 1.6% to 1.8% in china. So far, the operation is the only effective treatment method, but the operation difficulty is large, the risk is high, and serious complications such as spinal cord injury and the like are easily caused.
Although the traditional anterior vertebrectomy decompression bone grafting fusion internal fixation (ACCF) can directly cut ossification to achieve the purpose of effective radical treatment, the technical requirement is high, the risk is high, the incidence rate of complications such as cerebrospinal leakage and spinal cord injury is high, so that many doctors are forbidden, and some domestic scholars regard the spinal canal stenosis rate to be more than 50% and the ossification thickness to be more than 5mm as contraindications of the anterior surgery. The posterior surgery has higher safety, but destroys the complete arteriovenous system in the spinal canal, damages the nutritional conditions needed by the rehabilitation after spinal cord injury, can not remove ossification, can only achieve the purpose of palliative treatment through indirect decompression, runs against the basic principle of' where the pressure is reduced, and the curative effect of the surgery is difficult to ensure.
In view of this, naval military medical university subsidiary chang zheng hospital innovatively provides the concept of the complex of vertebral body ossicle, ligament and dura mater, and the utility model discloses a controllable antedisplacement technology (ACAF) of anterior cervical vertebral body ossicle complex, compared with the existing cervical vertebra operation technology, the technology has obvious differences from the aspects of treatment concept, technical operation, operation complications, postoperative curative effect and the like. The technique firstly removes and decompresses the intervertebral disc of the focus part, implants the intervertebral fusion device and temporarily fixes the front auxiliary titanium plate. Then the centrum existing in the ossification of the posterior longitudinal ligament is moved forwards, and finally the titanium plate is firmly fixed. At present, the titanium plate which is commonly used clinically is shielded by the middle part, so that the cutting of the two sides of the anterior vertebral body is difficult. In addition, the two end surfaces of the traditional interbody fusion cage are often provided with sawtooth structures, which greatly increases the forward movement resistance and is not beneficial to the operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the drawback of common titanium board and interbody fusion cage in ACAF operation, fully consider operation approach and clinical operation, provide a simple, the implantation of equipment is convenient to can be better rebuild the novel false body of cervical vertebra physiological curvature and stability, be applicable to ACAF's nail board-fusion cage combined system.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
a nail plate-fusion device combined system suitable for ACAF comprises a fixing plate, an upper fusion device, a lower fusion device, a lifting screw and locking screws, wherein the upper fusion device, the lower fusion device, the lifting screw and the locking screws are installed on the fixing plate, the fixing plate is in a dumbbell-shaped plate shape with two expanded ends and a narrow middle part, the lifting screw hole is formed in the center of the fixing plate, two sliding grooves are formed in two sides of the lifting screw hole in the fixing plate respectively, two locking screw holes are formed in two ends of the fixing plate respectively, the upper fusion device and the lower fusion device penetrate through the sliding grooves respectively through the locking screws and are fixed on the fixing plate, the lifting screw penetrates through the lifting screw hole and is installed on the fixing plate, and a plurality of the locking screws are installed on the fixing plate respectively.
The contact end surfaces of the upper fusion device and the lower fusion device and the vertebral body are subjected to smoothing treatment.
The length of the fixing plate and the number of the lifting screw holes and the sliding grooves on the fixing plate can be increased by increasing the number of the upper fusion devices and the lower fusion devices.
And performing fillet treatment on the edge of the fixing plate.
The sliding groove is formed by a plurality of intersecting round holes with equal size, and the distance L between the circle centers of two adjacent round holes is the minimum distance for the locking screw to slide along the sliding groove each time.
The locking screw is formed by combining a screw tail part and a locking screw body into a whole, and the minimum width W1 of the sliding groove is greater than the diameter d2 of the locking screw body and smaller than the diameter d1 of the locking screw tail part; the maximum width W2 is exactly equal to the locking screw tail diameter d 1.
The lifting screw is formed by combining the tail part of the lifting screw and the body part of the lifting screw into a whole, a thread structure is arranged on the inner surface of the lifting screw hole, the diameter of the thread structure is larger than the diameter D2 of the body part of the lifting screw and is equal to the diameter D1 of the tail part of the lifting screw, the upper fusion device and the lower fusion device are driven to move forwards by screwing the lifting screw, and after the movement is successful, the tail part of the lifting screw is locked with the lifting screw hole in the fixing plate.
The front surfaces of the upper fusion device and the lower fusion device are provided with screw holes which are matched with the body parts of the locking screws, and the middle parts of the upper fusion device and the lower fusion device are provided with bone grafting grooves which are convenient for bone grafting fusion.
The contact surfaces of the upper fusion device, the lower fusion device and the adjacent vertebral body which is not moved forward are provided with sawtooth structures, so that the function of enhancing fixation is achieved.
The upper end surfaces of the upper fusion device and the lower fusion device are respectively provided with an arc-shaped bulge, and the arc-shaped bulges are more attached to the end plate shape, so that the contact area is increased, and the local stress is reduced.
The diameter D2 of the body part of the lifting screw is smaller than the diameter D1 of the tail part of the lifting screw, the lifting screw and the tail part of the lifting screw are provided with different thread structures, and the tail part of the lifting screw is provided with grooves in a hexagon shape or a quincunx shape and the like, so that the lifting screw is convenient to screw in.
The diameter d2 of the body of the locking screw is smaller than the diameter d1 of the tail, the locking screw and the tail are provided with different thread structures, and the tail is provided with a hexagonal or quincunx groove and the like, so that the locking screw can be conveniently screwed in.
The locking screw tail diameter d1 is equal to the locking screw diameter.
The fixing plate, the upper fusion device, the lower fusion device, the lifting screw and the fixing screw are integrally formed and have different sizes as required.
The fusion cage is made of polyether-ether-ketone materials, the surface of the fusion cage is treated by hydroxyapatite coating, and the fixing plate, the lifting screw and the locking screw are made of titanium alloy materials.
The beneficial effects of the utility model are embodied in:
the nail plate-fusion cage composite system of the utility model fully considers the ACAF operation characteristics and has the advantages of simple assembly, convenient operation and the like.
The fixed plate is expanded at both ends, and the middle part is narrow dumbbell shape, overcomes the defect of sheltering from when traditional titanium board cuts centrum both sides in ACAF art. In addition, the fixing plate is provided with different lengths according to the number of the antedisplacement vertebral bodies, so that different operation requirements are met.
The slip slot, can make the locking screw who is connecting the fusion ware remove along the slot, be convenient for on the one hand to fuse the ware and implant intervertebral space smoothly, on the other hand can strut to both sides with the locking screw that struts the ware and will link the fusion ware when the centrum antedisplacement, provides more spaces for the centrum of antedisplacement to do benefit to the centrum antedisplacement. In addition, the inner surface of the sliding groove is provided with a thread structure which is matched with the thread at the tail part of the locking screw, so that the fusion device can be firmly connected with the fixing plate.
Fuse ware and antedisplacement vertebra body contact surface carry out smooth processing, greatly reduced the resistance that the centrum antedisplacement, and fuse ware and non-antedisplacement vertebra body contact surface is equipped with the sawtooth structure, has increased fixed strength.
Carry and draw screw afterbody screw thread and carry the screw thread matched stack of carrying the screw inner face, treat that antedisplacement centrum migration can firmly be fixed it with the fixed plate after successfully, increased stability.
Fuse ware all adopt the polyether ether ketone material, close with the sclerotin elasticity model, avoided stress shielding.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a rear view of the present invention.
Fig. 3 is an oblique view of the present invention.
Fig. 4 is an oblique view of the fixing plate of the present invention.
Fig. 5 is an oblique view of the upper cage.
Fig. 6 is an oblique view of the lower cage.
Fig. 7 is a front view of a lifting screw.
Fig. 8 is a front view of the locking screw.
Fig. 9 is a front view of the slide groove.
Fig. 10 is an oblique view of the extended nail plate-cage composite system.
Fig. 11 is an oblique view of the intermediate cage.
In the figure, 1, a fixing plate, 2, an upper fusion device, 3, a lower fusion device, 4, a lifting screw, 5, a locking screw, 6, a lifting screw hole, 7, a sliding groove, 8, a locking screw hole, 9, a round corner treatment, 10, a screw hole, 11, a bone grafting groove, 12, a sawtooth structure, 13, a tail part of the lifting screw, 14, a body part of the lifting screw, 15, a tail part of the locking screw, 16, a body part of the locking screw and 17 are used as intermediate fusion devices.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1-3, the nail plate-fusion cage composite system of the present invention includes a fixing plate 1, and an upper fusion cage 2, a lower fusion cage 3, a lifting screw 4, and a locking screw 5 mounted on the fixing plate 1.
Referring to fig. 4 to 11, the fixing plate 1 is in a dumbbell shape with two enlarged ends and a narrow middle, a lifting screw hole 6 is arranged at the center of the fixing plate 1, two sliding grooves 7 are respectively arranged at two sides of the lifting screw hole 6 on the fixing plate 1, two locking screw holes 8 are respectively arranged at two ends of the fixing plate 1, the upper fusion device 2 and the lower fusion device 3 are respectively fixed on the fixing plate 1 by penetrating the sliding grooves 7 through locking screws 5, the lifting screws 4 are installed on the fixing plate by penetrating the lifting screw holes 6, and a plurality of locking screws 5 are respectively installed on the fixing plate 1 by matching with the locking screw holes 8 through threads.
The contact end surfaces of the upper fusion device 2 and the lower fusion device 3 and the vertebral body are subjected to smoothing treatment.
The length of the fixing plate 1 and the number of the lifting screw holes 4 and the sliding grooves 5 on the fixing plate can be increased by increasing the number of the upper fusion devices 2 and the lower fusion devices 3.
And the edge of the fixing plate is subjected to fillet treatment 9.
The sliding groove 7 is formed by a plurality of intersecting circular holes with equal size, and the distance L between the circle centers of two adjacent circular holes is the minimum distance for the locking screw 5 to slide along the sliding groove 7 each time.
The locking screw 5 is formed by combining a screw tail part 15 and a locking screw body part 16 into a whole, and the minimum width W1 of the sliding groove 7 is greater than the diameter d2 of the locking screw body part 16 and smaller than the diameter d1 of the locking screw tail part 15; the maximum width W2 is exactly equal to the locking screw tail 15 diameter d 1.
The lifting screw 4 is formed by combining a lifting screw tail part 13 and a lifting screw body part 14 into a whole, a thread structure is arranged on the inner surface of the lifting screw hole 6, the diameter of the thread structure is larger than the diameter D2 of the lifting screw body part 14 and is equal to the diameter D1 of the lifting screw tail part 13, the upper fusion device 2 and the lower fusion device 3 are driven to move forwards by screwing the lifting screw 4, and after the movement is successful, the lifting screw tail part 13 is locked with the lifting screw hole 6 on the fixing plate 1.
The front surfaces of the upper fusion device 2 and the lower fusion device 3 are provided with screw holes 10 which are matched with locking screw bodies 16, and bone grafting grooves 11 are arranged in the middle, so that bone grafting fusion is facilitated.
The contact surfaces of the upper fusion device 2 and the lower fusion device 3 and the adjacent vertebral bodies which are not moved forward are provided with sawtooth structures 12, so that the function of strengthening fixation is achieved.
The upper end surfaces of the upper fusion device 2 and the lower fusion device 3 are respectively provided with an arc-shaped bulge, and the arc-shaped bulges are more attached to the end plate shape, so that the contact area is increased, and the local stress is reduced.
The diameter D2 of the lifting screw body 14 is smaller than the diameter D1 of the tail part 13, the lifting screw body and the tail part 13 are provided with different thread structures, and the tail part 13 is provided with a hexagonal or quincunx groove and the like so as to be convenient to screw in.
The diameter d2 of the locking screw body 16 is smaller than the diameter d1 of the tail part 15, the locking screw body and the tail part are provided with different thread structures, and the tail part is provided with a hexagonal or quincunx groove and the like so as to be convenient to screw in.
The locking screw tail 16 has a diameter d1 equal to the diameter of the locking screw 5.
The fixing plate 1, the upper fusion device 2, the lower fusion device 3, the lifting screw 4 and the fixing screw 5 are integrally formed and are provided with different sizes as required.
The fusion cage is made of polyether-ether-ketone materials, the surface of the fusion cage is treated by hydroxyapatite coating, and the fixing plate, the lifting screw and the locking screw are made of titanium alloy materials.
Examples
Referring to fig. 1-11, the nail plate-cage composite system includes five parts, a fixing plate, an upper cage, a lower cage, a lifting screw and a locking screw. The fixing plate is in a dumbbell shape with two expanded ends and a narrow middle part, and a lifting screw hole, a locking screw hole and a sliding groove are arranged on the fixing plate. The contact end surfaces of the upper and lower fusion devices and the antedisplacement vertebral body are subjected to smoothing treatment. The lifting screw and the locking screw are both composed of a body part and a tail part and are provided with thread structures. The length of the fixing plate and the number of the lifting screw holes and the sliding grooves on the fixing plate can be increased along with the increase of the number of the anterior vertebral bodies. And carrying out fillet treatment on the edge of the fixing plate.
The sliding groove is composed of a plurality of intersecting round holes with equal size, and the distance L between the circle centers of two adjacent round holes is the minimum distance for the locking screw to slide along the sliding groove each time. The inner surface of the sliding groove is provided with a thread structure which is matched with the thread at the tail part of the locking screw. The minimum width W1 of the sliding groove is larger than the diameter d2 of the body of the locking screw and smaller than the diameter d1 of the tail of the locking screw; the maximum width W2 is exactly equal to the locking screw tail diameter d 1. The inner surface of the lifting screw hole is provided with a thread structure, the diameter of the thread structure is larger than the diameter D2 of the body part of the lifting screw and is equal to the diameter D1 of the tail part of the lifting screw. The lifting screw is screwed in to drive the forward moving vertebral body to move forwards, and after the forward moving vertebral body successfully moves, the tail part of the lifting screw is locked with the lifting screw hole on the fixing plate.
The front of the upper and lower fusion devices is provided with a screw hole which is matched with the locking screw body, and the middle is provided with a bone grafting groove which is convenient for bone grafting fusion. The contact surface with the adjacent vertebra body which is not moved forward is provided with a sawtooth structure which plays a role in strengthening fixation. The upper end face is provided with arc-shaped bulges, and the arc-shaped bulges are more attached to the shape of the end plate, so that the contact area is increased, and the local stress is reduced.
The diameter D2 of the body part of the lifting screw is smaller than the diameter D1 of the tail part of the lifting screw, the lifting screw and the tail part of the lifting screw are provided with different thread structures, and the tail part of the lifting screw is provided with grooves in a hexagon shape or a quincunx shape and the like, so that the lifting screw is convenient to screw in. The diameter d2 of the body part of the locking screw is smaller than the diameter d1 of the tail part of the locking screw, the locking screw and the tail part of the locking screw are provided with different thread structures, and the tail part of the locking screw is provided with grooves in a hexagon shape or a quincunx shape and the like, so that the locking screw can be conveniently screwed in. The locking screw tail diameter d1 is equal to the locking screw diameter.
The number of the fusion cage is increased along with the increase of the number of the antedisplacement vertebral bodies, the newly added fusion cage is a middle fusion cage, and the upper surface and the lower surface of the fusion cage are both subjected to smooth treatment, so that the sliding of the antedisplacement vertebral bodies is facilitated.
The fixing plate, the fusion device, the lifting screw and the fixing screw are integrally formed and have different sizes as required. The fusion cage is made of polyether-ether-ketone materials, the surface of the fusion cage is treated by hydroxyapatite coating, and the fixing plate, the lifting screw and the locking screw are made of titanium alloy materials.
The utility model discloses nail board-integration ware combined system assembles as follows: and selecting a composite system with a proper model according to the quantity of the ACAF antedisplacement vertebral bodies. And (4) passing the locking screw through the sliding groove and then assembling the locking screw with a fusion device of a proper model, and paying attention to the selection of the upper fusion device, the lower fusion device and the middle fusion device. Then the assembled composite system is implanted into an operation position, the locking screws of the fusion device are connected in a sliding mode, so that the fusion device is smoothly implanted into an intervertebral space, and then four locking screws are used for being implanted along the locking screw holes of the fixing plate, so that the fixing plate is firmly fixed with an adjacent vertebral body. And then the lifting screw is screwed in along the lifting screw hole until the tail part of the lifting screw is contacted with the fixing plate. At the moment, the anterior vertebral body is cut along the two sides of the fixing plate by using an ultrasonic osteotome, so that the anterior vertebral body is completely dissociated. Then the locking screw connected with the fusion device is propped open towards two sides by the propping device, so that sufficient space is provided for the centrum to move forward. And tightening the lifting screw again to drive the forward moving vertebral body to move forwards, and locking the tail of the lifting screw with the lifting screw hole of the fixing plate after the forward moving vertebral body successfully moves. And finally, screwing the tail part of the locking screw connected with the fusion device into the sliding groove of the fixing plate to lock the tail part of the locking screw and the sliding groove of the fixing plate.
In a word, the utility model discloses a nail board-fusion cage combined system suitable for ACAF (anterior cervical way centrum ossification complex body controllable antedisplacement fusion) including fixed plate, go up the fusion cage, fuse the ware down, carry and draw screw and locking screw five parts. The fixing plate is in a dumbbell shape with two expanded ends and a narrow middle part, and a lifting screw hole, a locking screw hole and a sliding groove are arranged on the fixing plate. The sliding channel allows the body of the locking screw to slide along it, thereby moving the attached cage into place and then mating with the tail of the locking screw for locking fixation. The upper and lower fusion devices are respectively implanted into the anterior vertebral body adjacent to the upper and lower intervertebral spaces, and the upper end surfaces of the upper and lower fusion devices are both provided with arc-shaped bulges which are more fit with the shapes of end plates. The front of the upper and lower fusion devices is provided with a screw hole which is matched with the locking screw, and the middle is provided with a bone grafting groove which is convenient for bone grafting fusion. The contact surfaces of the upper and lower fusion devices and the anterior vertebral bodies are smoothly processed, and the contact surfaces of the upper and lower fusion devices and the adjacent vertebral bodies which are not anterior moved are provided with sawtooth structures. The lifting screw consists of a body part and a tail part, the diameter of the body part is smaller than that of the lifting screw hole on the fixing plate, and the tail part is matched with the lifting screw hole, so that the forward moving vertebral body is lifted to a proper position and then locked. The locking screw is also composed of a body part and a tail part, the diameter of the body part is smaller than that of the locking screw hole on the fixing plate, and the tail part is matched with the locking screw hole. The length of the fixing plate and the number of the lifting screw holes and the sliding grooves on the fixing plate can be increased along with the number of the anterior vertebral bodies. The fusion cage can be increased along with the increase of the number of the antedisplacement vertebral bodies, the newly added fusion cage is a middle fusion cage, and the upper surface and the lower surface of the fusion cage are both subjected to smooth treatment, so that the sliding of the antedisplacement vertebral bodies is facilitated. The fixing plate, the lifting screw and the locking screw are all made of titanium alloy materials, and the fusion device is integrally formed by polyether-ether-ketone materials. The utility model can reconstruct the physiological curvature and stability of the cervical vertebra operation part, and is convenient to operate and easy to implant.
The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative work from the above conception, and all the changes fall within the protection scope of the present invention.
Claims (10)
1. A nail plate-fusion device composite system suitable for ACAF is characterized in that: the fusion cage comprises a fixing plate, an upper fusion cage, a lower fusion cage, a lifting screw and locking screws, wherein the upper fusion cage, the lower fusion cage, the lifting screw and the locking screws are arranged on the fixing plate, the fixing plate is in a dumbbell-shaped plate shape with two expanded ends and a narrow middle part, the center of the fixing plate is provided with the lifting screw hole, two sides of the lifting screw hole in the fixing plate are respectively provided with a sliding groove, two ends of the fixing plate are respectively provided with two locking screw holes, the upper fusion cage and the lower fusion cage respectively penetrate through the sliding grooves through the locking screws to be fixed on the fixing plate, the lifting screw penetrates through the lifting screw hole to be arranged on the fixing plate, and the locking screws are respectively arranged on the.
2. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the contact end surfaces of the upper fusion device and the lower fusion device and the vertebral body are subjected to smoothing treatment.
3. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the length of the fixing plate and the number of the lifting screw holes and the sliding grooves on the fixing plate can be increased by increasing the number of the upper fusion devices and the lower fusion devices.
4. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the sliding groove is formed by a plurality of intersecting round holes with equal size, and the distance L between the circle centers of two adjacent round holes is the minimum distance for the locking screw to slide along the sliding groove each time.
5. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the locking screw is formed by combining a screw tail part and a locking screw body into a whole, and the minimum width W1 of the sliding groove is greater than the diameter d2 of the locking screw body and smaller than the diameter d1 of the locking screw tail part; the maximum width W2 is exactly equal to the locking screw tail diameter d 1.
6. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the lifting screw is formed by combining the tail part of the lifting screw and the body part of the lifting screw into a whole, a thread structure is arranged on the inner surface of the lifting screw hole, the diameter of the thread structure is larger than the diameter D2 of the body part of the lifting screw and is equal to the diameter D1 of the tail part of the lifting screw, the upper fusion device and the lower fusion device are driven to move forwards by screwing the lifting screw, and after the movement is successful, the tail part of the lifting screw is locked with the lifting screw hole in the fixing plate.
7. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the front surfaces of the upper fusion device and the lower fusion device are provided with screw holes which are matched with the body parts of the locking screws, and the middle parts of the upper fusion device and the lower fusion device are provided with bone grafting grooves.
8. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the contact surfaces of the upper fusion device, the lower fusion device and the adjacent vertebral body which is not moved forward are provided with sawtooth structures.
9. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the upper end surfaces of the upper fusion device and the lower fusion device are respectively provided with an arc-shaped bulge.
10. The ACAF-compatible nail plate-cage composite system according to claim 1, wherein: the upper fusion device and the lower fusion device are made of polyether-ether-ketone materials, the surfaces of the upper fusion device and the lower fusion device are treated by hydroxyapatite coatings, and the fixing plate, the lifting screw and the locking screw are made of titanium alloy materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020508953.XU CN212281785U (en) | 2020-04-09 | 2020-04-09 | Nail plate-fusion cage composite system suitable for ACAF |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020508953.XU CN212281785U (en) | 2020-04-09 | 2020-04-09 | Nail plate-fusion cage composite system suitable for ACAF |
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| CN212281785U true CN212281785U (en) | 2021-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113693697A (en) * | 2021-07-22 | 2021-11-26 | 首都医科大学宣武医院 | Bone block lifting system, bone block lifting auxiliary instrument and vertebral body fixing plate |
-
2020
- 2020-04-09 CN CN202020508953.XU patent/CN212281785U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113693697A (en) * | 2021-07-22 | 2021-11-26 | 首都医科大学宣武医院 | Bone block lifting system, bone block lifting auxiliary instrument and vertebral body fixing plate |
| CN113693697B (en) * | 2021-07-22 | 2024-04-30 | 首都医科大学宣武医院 | Bone block lifting system, bone block lifting auxiliary instrument and vertebral body fixing plate |
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