CN213217919U - Occipital-cervical fusion bone grafting device for posterior cervical surgery - Google Patents
Occipital-cervical fusion bone grafting device for posterior cervical surgery Download PDFInfo
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- CN213217919U CN213217919U CN202020756802.6U CN202020756802U CN213217919U CN 213217919 U CN213217919 U CN 213217919U CN 202020756802 U CN202020756802 U CN 202020756802U CN 213217919 U CN213217919 U CN 213217919U
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Abstract
The embodiment of the utility model discloses a occipital and cervical fusion bone grafting device for posterior cervical surgery, which comprises an upper bone body and a lower bone body, wherein the upper bone body and the lower bone body are connected through a telescopic structure, and bone grafting grooves are arranged at the top end of the upper bone body and the bottom end of the lower bone body; the telescopic structure includes: the inserting part is inserted in the sliding groove; the limiting holes are communicated with the sliding grooves; the limiting groove is arranged on the inserting part; the screw rod, the screw rod is inserted and is located spacing hole and spacing inslot, the both ends that will plant the bone device after filling into the sclerotin in the groove of planting the bone are fixed in respectively under the pillow and on the spinous process, the bone grafting volume has been reduced, and the length of planting the bone device can be adjusted wantonly in certain extent, insert the position of establishing the portion in the spout through the regulation then through the screw rod fixed length, can adjust the length of planting the bone device, satisfy the patient's of different condyle length demand, the trouble of reselecting the bone has been avoided, the efficiency of the bone grafting operation has been improved.
Description
Technical Field
The utility model relates to a medical treatment surgical equipment field especially relates to a way operation occipital neck fuses bone grafting device behind neck.
Background
In operations such as spinal tumor, after an operator finishes the resection of the tumor containing 1 and 2 cervical vertebrae, the cervical vertebrae of a patient are unstable, and the patient needs to be subjected to occipital-cervical fusion internal fixation operation.
Generally, because the strength of a pure occipital neck fusion nail rod system is limited, the post-operation nail and rod breaking may occur, and an operator needs to implant internal plants such as allogeneic/autologous iliac blocks or fibula strips between spinous processes of adjacent healthy sections below the occipital and surgically-removed sections of a patient to strengthen and fix the cervical vertebra of the patient.
However, under the condition that the cervical vertebra segment cut by a patient is longer, the required bone grafting block needs to be correspondingly lengthened, most of the existing allogeneic/autologous iliac blocks or fibula strips are fixed in length, the bone grafting length of 2-3 segments at most is generally met, the bone grafting amount is larger, and the cost is higher; if the surgical resection section is longer, bone grafting can be abandoned only in an open state, or a large amount of self-body ilium is taken, so that additional damage is caused to the patient; or to customize the allograft bone pieces in advance, which is time consuming and labor intensive and creates additional burden on the patient.
Disclosure of Invention
An object of the utility model is to provide a way operation occipital neck fuses bone grafting device behind the neck, solve above technical problem.
The utility model provides a technical problem can adopt following technical scheme to realize:
a occipital-cervical fusion bone grafting device for posterior cervical surgery comprises
The bone grafting device comprises an upper bone body and a lower bone body, wherein the upper bone body and the lower bone body are connected through a telescopic structure, and bone grafting grooves are formed in the top end of the upper bone body and the bottom end of the lower bone body;
the retractable structure includes:
the inserting part is arranged at the bottom end of the upper bone body;
the sliding groove is arranged inside the top end of the lower bone body, and the inserting part is inserted into the sliding groove;
the limiting holes are arranged on the side surface of the lower bone body and communicated with the sliding groove;
the limiting groove is arranged on the inserting part;
and the screw rod is inserted in the limiting hole and the limiting groove.
Preferably, the bone grafting groove is U-shaped in front section, and two fixing wings are arranged at the top of the upper bone body and the bottom of the lower bone body.
Preferably, the limiting holes are vertically arranged on the lower bone body and are continuously arranged.
Preferably, the limit groove is continuously formed on the insertion portion.
Preferably, the internal thread of the limit groove is matched with the external thread of the screw.
Preferably, when the screw rod is screwed out of the limit groove, the inserting part can slide up and down in the sliding groove.
Preferably, a knob is arranged at the first end of the screw rod, which penetrates out of the outer side of the lower bone body, and elastic friction grains are arranged on the outer side of the knob.
Preferably, the second end of the screw rod penetrates out of the side surface of the lower bone body and is connected with a screw cap.
Has the advantages that: the utility model is provided with bone grafting grooves at the top and the bottom of the bone grafting device, and the two ends of the bone grafting device are respectively fixed under the pillow and on the spinous process after the bone is filled in the bone grafting grooves, thereby reducing the bone grafting amount, needing no whole autologous/allogeneic bone block, and only needing to fill broken bone particles in the bone grafting grooves; and the length of bone grafting device can be adjusted wantonly in the certain limit, inserts the position of establishing the portion in the spout and then passes through the screw rod fixed length through the regulation, can adjust the length of bone grafting device, satisfies different segment length, especially long segment occipital neck juncture bone defect's demand, has avoided leading to unable bone grafting because of defective segment overlength and has strengthened the awkward situation that stability rebuilds, adds the new choice of surgical instruments, has improved the success rate of operation.
Drawings
Fig. 1 is a schematic cross-sectional view of the bone grafting device of the present invention;
fig. 2 is a schematic side view of the bone grafting device of the present invention.
In the figure: 1-upper bone body; 10-bone grafting groove; 11-fixed wing;
2-lower bone body; 20-a chute; 21-a limiting hole;
3-a scalable structure; 30-an insertion portion; 31-a limiting groove; 32-screw rod; 33-knob.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be further described with reference to the accompanying drawings and specific embodiments, but the present invention is not limited thereto.
As shown in figure 1, the utility model provides a occipital-cervical fusion bone grafting device for posterior cervical operation, which comprises
The bone grafting device comprises an upper bone body 1 and a lower bone body 2, wherein the upper bone body 1 and the lower bone body 2 are connected through a telescopic structure 3, and bone grafting grooves 10 are formed in the top end of the upper bone body 1 and the bottom end of the lower bone body 2;
the collapsible structure 3 includes:
an inserting part 30 arranged at the bottom end of the upper bone body 1;
the sliding groove 20 is arranged inside the top end of the lower bone body 2, and the inserting part 30 is inserted into the sliding groove 20;
a limiting hole 21 arranged on the side surface of the lower bone body 2 and communicated with the chute 20;
a stopper groove 31 provided on the insertion portion 30;
at least one screw 32, the screw 32 is inserted into a limiting hole 21 and a limiting groove 31.
The screw rod 32 is screwed out of the limiting groove 31, so that the inserting part 30 can move up and down and slide in the sliding groove 20, the length of the whole bone grafting device is adjusted according to the actually required bone grafting length, and the length adjustment of the bone grafting device is completed;
then the screw 32 is screwed into the limiting groove 31 again to complete the length fixation of the bone grafting device. Additionally, if the length of the bone grafting device needs to be adjusted in advance, the scale can be arranged on the inserting part 30 to record the inserting depth, so that the length of the whole bone grafting device can be calculated or directly read conveniently, and the length of the bone grafting device can be adjusted more conveniently, quickly and accurately.
The utility model has the advantages that:
the utility model discloses set up on the top of planting the bone device and plant the bone groove in bottom, will plant the both ends of bone device and be fixed in respectively under the pillow and on the spinous process after filling into the sclerotin in planting the bone groove, the artificial bone of upper and lower planting bone inslot hugs closely respectively under the pillow and on the spinous process autologous bone structure finally realize the biological fusion. The device has reduced the bone grafting volume, and the length of planting the bone device can be adjusted wantonly in the certain limit, inserts the position of establishing the portion in the spout through the regulation and then fixes through the screw rod, can adjust the length of planting the bone device, satisfies the patient's of different condyle lengths demand, has avoided the trouble of reselecting the bone, has improved the efficiency of the bone grafting operation.
As a preferred embodiment of the present invention, the front section of the bone grafting groove 10 is U-shaped, so that the bone can be easily filled into the bone grafting groove. The objects within 10 of fig. 1 represent bone particles. Two fixing wings 11 are arranged at the top of the upper bone body 1 and the bottom of the lower bone body 2.
The two fixing wings at the top end of the upper bone body 1 and the two fixing wings at the bottom end of the lower bone body 2 can be in a horn shape with convex sharp corners at two sides and concave middle, and are convenient to fix under the occiput and on the spinous process. The fixing wings are provided with screw holes, so that screws can be conveniently inserted and fixed.
It is supplementary to supplement that the stationary vane can be made of titanium plate, the stationary vane can be bent to at least 90 degrees through the tool, two stationary vanes of the top of the upper shaft can be fixed on the occipital bone through the screw, two stationary vanes of the bottom of the lower shaft can be clamped on both sides of the spinous process respectively, the side of the stationary vane can be fixed by screwing the screw to penetrate the spinous process bone, so that the bottom of the lower shaft 2 or the top of the upper shaft 1 can be fixed on the bone better.
As a specific example, as shown in figure 1, two screw holes are arranged on two fixing wings of the upper bone body, and the two fixing wings are respectively fixedly connected with the sclerotin through the two screws;
the two screw holes on the two fixing wings of the lower bone body can be inserted into the same screw, the screw is screwed into one of the fixing wings through a single screw, and then the screw is punched through the spinous process and penetrates out of the other fixing wing, so that the lower bone body is fixed on the spinous process.
As a preferred embodiment of the present invention, the limiting holes 21 are vertically arranged and continuously arranged on the lower shaft 2. The adjustment is more convenient, and the length measurement is simpler.
As a preferred embodiment of the present invention, the limiting grooves 31 are vertically arranged and continuously provided on the insertion portion. Facilitating adjustment and fixation of multiple lengths.
In a preferred embodiment of the present invention, the outer diameter of the limiting groove 31 is larger than the outer diameter of the screw 32. The screw 32 experiences less resistance as it rotates, reducing wear.
As shown in fig. 2, the middle parts of the two sides of the upper shaft and the lower shaft are provided with strip-shaped through grooves, that is, the combined holes of the limiting hole 21 and the limiting groove 31 can be inserted into the limiting hole 21 and the limiting groove 31 through screws and penetrate out from the other end of the limiting hole 21, and the nut is screwed on the other end of the screws to lock the length of the whole device and the position of the upper shaft. And the stability and firmness of the device can be increased by screwing a plurality of screws into the continuous limiting holes 21 and the continuous limiting grooves 31.
In a preferred embodiment of the present invention, the insertion portion 30 can slide up and down in the sliding groove 20 when the screw 32 is screwed out of the limiting hole.
As a preferred embodiment of the present invention, a knob 33 is disposed on the outer side of the first end of the screw rod 32, which penetrates out of the lower shaft 2, and elastic friction lines are disposed on the outer side of the knob 33. The design of the knob can facilitate the screw 32 to be directly and manually screwed out, and the elastic friction lines prevent slipping.
The above description is only an example of the preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and those skilled in the art should be able to realize the equivalent alternatives and obvious variations of the present invention.
Claims (8)
1. A occipital-cervical fusion bone grafting device for posterior cervical surgery is characterized by comprising
The bone grafting device comprises an upper bone body and a lower bone body, wherein the upper bone body and the lower bone body are connected through a telescopic structure, and bone grafting grooves are formed in the top end of the upper bone body and the bottom end of the lower bone body;
the retractable structure includes:
the inserting part is arranged at the bottom end of the upper bone body;
the sliding groove is arranged inside the top end of the lower bone body, and the inserting part is inserted into the sliding groove;
the limiting holes are arranged on the side surface of the lower bone body and communicated with the sliding groove;
the limiting groove is arranged on the inserting part;
and the screw rod is inserted in the limiting hole and the limiting groove.
2. The occipital-cervical fusion bone grafting device for posterior cervical surgery according to claim 1, wherein the bone grafting groove has a U-shaped front section, and the top of the upper shaft and the bottom of the lower shaft are provided with two fixing wings.
3. The occipital fusion bone grafting device for posterior cervical surgery according to claim 1, wherein the limiting holes are vertically arranged on the lower bone body and are continuously arranged.
4. The occipital fusion bone grafting device for posterior cervical surgery according to claim 1, wherein the limit groove is continuously provided on the insertion part.
5. The occipital-cervical fusion bone grafting device for posterior cervical surgery according to claim 1, wherein the internal thread of the limiting groove is matched with the external thread of the screw.
6. The occipital-cervical fusion bone grafting device for the posterior cervical operation according to claim 1, wherein when the screw rod is screwed out of the limit groove, the inserting part can slide up and down in the slide groove.
7. The occipital and cervical fusion bone grafting device for the posterior cervical surgery according to claim 1, wherein a knob is arranged at the first end of the screw rod which penetrates out of the outer side of the lower bone body, and elastic friction lines are arranged at the outer side of the knob.
8. The occipital fusion bone grafting device of the posterior cervical procedure of claim 7, wherein the second end of the screw rod penetrates out of the lateral surface of the lower shaft body and is connected with a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020756802.6U CN213217919U (en) | 2020-05-09 | 2020-05-09 | Occipital-cervical fusion bone grafting device for posterior cervical surgery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020756802.6U CN213217919U (en) | 2020-05-09 | 2020-05-09 | Occipital-cervical fusion bone grafting device for posterior cervical surgery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213217919U true CN213217919U (en) | 2021-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020756802.6U Active CN213217919U (en) | 2020-05-09 | 2020-05-09 | Occipital-cervical fusion bone grafting device for posterior cervical surgery |
Country Status (1)
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|---|---|
| CN (1) | CN213217919U (en) |
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2020
- 2020-05-09 CN CN202020756802.6U patent/CN213217919U/en active Active
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