CN215994200U - Angle-adjustable self-locking type lumbosacral anterior approach transforaminal arch fixing nail plate system - Google Patents
Angle-adjustable self-locking type lumbosacral anterior approach transforaminal arch fixing nail plate system Download PDFInfo
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- CN215994200U CN215994200U CN202122316674.0U CN202122316674U CN215994200U CN 215994200 U CN215994200 U CN 215994200U CN 202122316674 U CN202122316674 U CN 202122316674U CN 215994200 U CN215994200 U CN 215994200U
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Abstract
The utility model discloses an angle-adjustable self-locking lumbosacral anterior approach vertebral arch fixing nail plate system, which comprises a rectangular fixing plate body (1), wherein the middle part of the fixing plate body (1) is provided with a first arc-shaped bending (2) with an obtuse included angle and parallel to the edge of the fixing plate body (1), and the middle part of the first arc-shaped bending (2) is provided with a second arc-shaped bending (3) vertical to the first arc-shaped bending; four corners of the fixing plate body (1) are provided with universal screw holes (4), and fixing screws (5) are arranged in the universal screw holes (4); the universal screw hole (4) comprises an inner swinging part (6) facing the inner side of an included angle formed by the first arc-shaped bending part (2); the utility model discloses can reliably fix the backbone lumbosacral section anterior way of postoperative, and have the characteristics of using in a flexible way and agreeable nature is good.
Description
Technical Field
The utility model relates to the field of medical equipment, in particular to adjustable angle is from locking-type lumbosacral way anterior lumbar vertebrae fixing nail board system.
Background
The diseases of the amputation lumbosacral segment are common diseases and frequently encountered diseases in orthopedics department, which seriously troubles the work and life of people. The operation is an important treatment method for treating diseases of the lumbosacral segment, and the main operation modes comprise: the simple focus-removing bone grafting and the anterior focus-removing bone grafting combined posterior pedicle screw internal fixation are performed through an abdominal cavity or an extraperitoneal approach. The pure anterior focus is removed and the bone grafting is fixed due to the lack of a firm and reliable anterior internal fixing device, so that the stability of the lumbosacral vertebrae is difficult to reconstruct and the physiological curvature of the spine is recovered. Therefore, auxiliary external fixation is needed after operation, and patients are often difficult to tolerate. Although a good mechanical environment can be provided for the fusion of the spine in the anterior-posterior combined operation, the posture of the patient needs to be changed in the operation due to the anterior-posterior two operation approaches, the operation wound is large, the operation time is long, and the operation risk is increased undoubtedly. In addition, the combined approach also has the problems that the anterior bone graft is difficult to effectively open, the stability of posterior fixation to the anterior central column of the vertebral body is poor, and complications such as the absorption of the bone graft, the formation of a pseudoarthrosis, the relapse of deformity, the loosening and the fracture of an internal fixture and the like still occur in the long term.
At present, the clinical anterior internal fixation technology of the lumbosacral segment of the spine is developed, and Ha KY and the like give manual pre-bent anatomical plates to anterior internal fixation after focus clearing surgery of 5 sacral 1 segments of the waist by people in order to build middle-aged people, and all obtain better effects. In addition, a plurality of anterior internal fixators are arranged abroad to increase the stability of the anterior interbody fusion operation, and can complete the intervertebral fusion and the internal fixation operation through the anterior way at one time, thereby avoiding the complication of the posterior operation. These internal fixator devices have: FRA with front cross screws; an interbody cage with a forward steel plate; or a separate anterior steel plate internal fixation device. These internal fixation systems have the following problems: 1. higher risk of injury to common iliac arteries and veins; 2. the direction of the screw is relatively fixed, and the use is not flexible; 3. the biomechanical stability needs further verification; 4. the steel plate is composed of two small steel plates, and is not designed in the radian of sagittal plane and coronal plane, so the use in the operation is very inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an angle-adjustable self-locking type lumbosacral anterior approach transforaminal arch fixing nail plate system; the utility model discloses can reliably fix the backbone lumbosacral section anterior way of postoperative, and have the characteristics of using in a flexible way and agreeable nature is good.
The technical scheme of the utility model: the angle-adjustable self-locking type lumbosacral anterior approach vertebral arch fixing nail plate system comprises a rectangular fixing plate body, wherein a first arc-shaped bend which has an obtuse included angle and is parallel to the edge of the fixing plate body is arranged in the middle of the fixing plate body, and a second arc-shaped bend which is perpendicular to the first arc-shaped bend is arranged in the middle of the first arc-shaped bend; four corners of the fixing plate body are provided with universal screw holes, and fixing screws are arranged in the universal screw holes; the universal screw hole comprises an inner swinging part which is bent towards the first arc shape to form an included angle, an outer swinging part which is symmetrical with the inner swinging part is arranged on the fixed plate body on the opposite side of the position of the inner swinging part, and a clamping part is arranged between the inner swinging part and the outer swinging part; the fixing screw comprises a movable part which is positioned on the outer swinging part and matched with the outer swinging part, a limiting part is arranged between the movable part and the thread of the fixing screw, and the limiting part is matched with the clamping part.
In the angle-adjustable self-locking lumbosacral anterior channel vertebral arch fixing nail plate system, the inner swinging part and the outer swinging part are in a circular truncated cone shape, and one end of a small circular surface of the inner swinging part is opposite to one end of a small circular surface of the outer swinging part in orientation; the size of the clamping part corresponds to the size of one end of the small circular surface of the inner swing part and the outer swing part; the movable part is in a round table shape, the size of one end of the large round surface of the outer swing part is larger than that of one end of the large round surface of the movable part, and the side slope of the outer swing part corresponds to that of the movable part; the size of the limiting part is consistent with that of one end of the small circular surface of the movable part.
In the angle-adjustable self-locking lumbosacral anterior approach transforaminal arch fixing nail plate system, the side surface of the fixing plate body is a curved surface bending towards the middle part of the fixing plate body; the corners of the fixed plate body are provided with arc transitions.
In the angle-adjustable self-locking lumbosacral anterior transforaminal arch fixing nail plate system, an opening is formed in the middle of the fixing plate body.
In the angle-adjustable self-locking lumbosacral anterior approach transforaminal arch fixing nail plate system, the fixing plate body is made of a titanium alloy material.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. the middle part of the fixing plate body of the utility model is provided with a first arc-shaped bend which has an obtuse included angle and is parallel to the edge of the fixing plate body, and the middle part of the first arc-shaped bend is provided with a second arc-shaped bend which is perpendicular to the first arc-shaped bend; four corners of the fixing plate body are provided with universal screw holes, and fixing screws are arranged in the universal screw holes; the universal screw hole comprises an inner swinging part which is bent towards the first arc shape to form an included angle, an outer swinging part which is symmetrical with the inner swinging part is arranged on the fixed plate body on the opposite side of the position of the inner swinging part, and a clamping part is arranged between the inner swinging part and the outer swinging part; the fixing screw comprises a movable part which is positioned on the outer swinging part and matched with the outer swinging part, a limiting part is arranged between the movable part and the thread of the fixing screw, and the limiting part is matched with the clamping part; when the fixing screw is used, the fixing screw is inserted into the universal screw hole from one side of the outer swinging part and is implanted into the lumbosacral section of the spine at the position to be operated through the thread of the fixing screw, in the implantation process, the limiting part of the fixing screw is matched with the clamping part of the universal screw hole, so that the fixing screw is kept fixed on the fixing plate body, meanwhile, the fixing screw is controlled to rotate and incline in the outer swinging part and the inner swinging part by taking the clamping part as a supporting point, and along with the increase of the implantation depth of the fixing screw, the movable part pushes the inner side surface of the outer swinging part matched with the movable part to enable the fixing plate body to be close to the operation position, so that the fixing screw is flexibly suitable for various different operation fixing positions; after the four fixing screws are all arranged, self-locking is formed, the fixing plate body is completely attached to the lumbosacral section of the spine of the patient, and the first arc-shaped bending and the second arc-shaped bending are arranged to enhance the degree of engagement with the corresponding attachment position, so that stable three-column fixation to the operation position is achieved.
2. The inner swing part and the outer swing part of the utility model are in the shape of a circular truncated cone, and one end of a small circular surface of the inner swing part is opposite to one end of a small circular surface of the outer swing part; the size of the clamping part corresponds to the size of one end of the small circular surface of the inner swing part and the outer swing part; the movable part is in a round table shape, the size of one end of the large round surface of the outer swing part is larger than that of one end of the large round surface of the movable part, and the side slope of the outer swing part corresponds to that of the movable part; the size of the limiting part is consistent with that of one end of the small circular surface of the movable part; the inner swing part and the outer swing part in the shape of the circular truncated cone enable the fixing screw to have enough moving range; the side face with the same slope of the movable part and the outer swinging part can be better attached to each other, and the supporting effect is improved.
3. The side surface of the fixing plate body of the utility model is a curved surface bending towards the middle part of the fixing plate body; the corners of the fixed plate body are provided with arc transitions; the area of the fixed plate body is reduced, and the adaptability in use is further improved.
4. The utility model discloses the middle part of fixed plate body is equipped with the opening, can reduce the quality on the basis that does not influence original structural reliability to reduce manufacturing cost, and the laminating patient's that can be better backbone lumbosacral section reduces the conflict that probably produces.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the universal screw hole portion of the present invention.
The labels in the figures are: 1. fixing the plate body; 2. the first arc-shaped bending; 3. second arc bending; 4. a universal screw hole; 5. a set screw; 6. an inner swing portion; 7. an outer swing portion; 8. A clamping portion; 9. a movable portion; 10. a limiting part; 11. and (4) opening.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Example (b): an angle-adjustable self-locking type lumbosacral anterior approach vertebral arch fixing nail plate system is shown in attached figures 1 and 2 and comprises a rectangular fixing plate body 1, wherein a first arc-shaped bend 2 which has an obtuse included angle and is parallel to the edge of the fixing plate body 1 is arranged in the middle of the fixing plate body 1, and a second arc-shaped bend 3 which is perpendicular to the first arc-shaped bend 2 is arranged in the middle of the first arc-shaped bend 2; four corners of the fixing plate body 1 are provided with universal screw holes 4, and fixing screws 5 are arranged in the universal screw holes 4; the universal screw hole 4 comprises an inner swinging part 6 facing the inner side of an included angle formed by the first arc-shaped bending part 2, an outer swinging part 7 symmetrical to the inner swinging part is arranged on the fixed plate body 1 on the opposite side of the position of the inner swinging part 6, and a clamping part 8 is arranged between the inner swinging part 6 and the outer swinging part 7; the fixing screw 5 comprises a movable part 9 which is positioned on the outer swinging part 7 and matched with the outer swinging part, a limiting part 10 is arranged between the movable part 9 and the thread of the fixing screw 5, and the limiting part 10 is matched with the clamping part 8; the inner swing part 6 and the outer swing part 7 are in a circular truncated cone shape, and one end of a small circular surface of the inner swing part 6 is opposite to one end of a small circular surface of the outer swing part 7 in the direction; the size of the clamping part 8 corresponds to the size of one end of the small circular surface of the inner swing part 6 and the outer swing part 7; the movable part 9 is in a round table shape, the size of one end of the large round surface of the outer swing part 7 is larger than that of one end of the large round surface of the movable part 9, and the side slope of the outer swing part 7 corresponds to that of the movable part 9; the size of the limiting part 10 is consistent with that of one end of the small circular surface of the movable part 9; the side surface of the fixed plate body 1 is a curved surface which is bent towards the middle part of the fixed plate body 1; the corners of the fixed plate body 1 are provided with arc transitions; an opening 11 is formed in the middle of the fixed plate body 1; the fixed plate body 1 is made of titanium alloy material and has high strength.
The working principle is as follows: when the fixing screw is used, the fixing screw is inserted into the universal screw hole from one side of the outer swinging part and is implanted into the lumbosacral section of the spine at the position to be operated through the thread of the fixing screw, in the implantation process, the limiting part of the fixing screw is matched with the clamping part of the universal screw hole, so that the fixing screw is kept fixed on the fixing plate body, meanwhile, the fixing screw is controlled to rotate and incline in the outer swinging part and the inner swinging part by taking the clamping part as a supporting point, and along with the increase of the implantation depth of the fixing screw, the movable part pushes the inner side surface of the outer swinging part matched with the movable part to enable the fixing plate body to be close to the operation position, so that the fixing screw is flexibly suitable for various different operation fixing positions; after the four fixing screws are all arranged, self-locking is formed, the fixing plate body is completely attached to the lumbosacral section of the spine of the patient, and the first arc-shaped bending and the second arc-shaped bending are arranged to enhance the degree of engagement with the corresponding attachment position, so that stable three-column fixation to the operation position is achieved.
Claims (5)
1. Adjustable angle is from locking-type lumbosacral anterior approach fixing nail board system through vertebral arch, its characterized in that: the fixing plate comprises a rectangular fixing plate body (1), wherein a first arc-shaped bend (2) which has an obtuse included angle and is parallel to the edge of the fixing plate body (1) is arranged in the middle of the fixing plate body (1), and a second arc-shaped bend (3) which is perpendicular to the first arc-shaped bend (2) is arranged in the middle of the first arc-shaped bend; four corners of the fixing plate body (1) are provided with universal screw holes (4), and fixing screws (5) are arranged in the universal screw holes (4); the universal screw hole (4) comprises an inner swinging part (6) facing the inner side of an included angle formed by the first arc-shaped bending part (2), an outer swinging part (7) symmetrical to the inner swinging part is arranged on the fixed plate body (1) on the opposite side of the position of the inner swinging part (6), and a clamping part (8) is arranged between the inner swinging part (6) and the outer swinging part (7); the fixing screw (5) comprises a movable part (9) which is positioned on the outer swinging part (7) and matched with the outer swinging part, a limiting part (10) is arranged between the movable part (9) and the thread of the fixing screw (5), and the limiting part (10) is matched with the clamping part (8).
2. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 1, wherein: the inner swing part (6) and the outer swing part (7) are in a circular truncated cone shape, and one end of a small circular surface of the inner swing part (6) is opposite to one end of a small circular surface of the outer swing part (7) in orientation; the size of the clamping part (8) corresponds to the size of one end of the small circular surface of the inner swing part (6) and the outer swing part (7); the movable part (9) is in a round table shape, the size of one end of the large round surface of the outer swing part (7) is larger than that of one end of the large round surface of the movable part (9), and the side slope of the outer swing part (7) corresponds to that of the movable part (9); the size of the limiting part (10) is consistent with that of one end of the small circular surface of the movable part (9).
3. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 1, wherein: the side surface of the fixed plate body (1) is a curved surface which is bent towards the middle part of the fixed plate body (1); the corners of the fixed plate body (1) are provided with arc transitions.
4. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 1, wherein: the middle part of the fixed plate body (1) is provided with an opening (11).
5. The adjustable angle self-locking lumbosacral anterior transforaminal fixation nail plate system of claim 1, wherein: the fixed plate body (1) is made of a titanium alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122316674.0U CN215994200U (en) | 2021-09-24 | 2021-09-24 | Angle-adjustable self-locking type lumbosacral anterior approach transforaminal arch fixing nail plate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122316674.0U CN215994200U (en) | 2021-09-24 | 2021-09-24 | Angle-adjustable self-locking type lumbosacral anterior approach transforaminal arch fixing nail plate system |
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| Publication Number | Publication Date |
|---|---|
| CN215994200U true CN215994200U (en) | 2022-03-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122316674.0U Active CN215994200U (en) | 2021-09-24 | 2021-09-24 | Angle-adjustable self-locking type lumbosacral anterior approach transforaminal arch fixing nail plate system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215994200U (en) |
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2021
- 2021-09-24 CN CN202122316674.0U patent/CN215994200U/en active Active
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