CN214712741U - Front-path multidirectional self-locking titanium plate system - Google Patents
Front-path multidirectional self-locking titanium plate system Download PDFInfo
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- CN214712741U CN214712741U CN202023328925.9U CN202023328925U CN214712741U CN 214712741 U CN214712741 U CN 214712741U CN 202023328925 U CN202023328925 U CN 202023328925U CN 214712741 U CN214712741 U CN 214712741U
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Abstract
The utility model relates to a multidirectional auto-lock titanium board system of way in front relates to medical instrument's field, including the titanium board body, the titanium board body is triangle-shaped and has not matched with the vascular district shape, the mounting hole has been seted up at titanium board body both ends, install universal screw in the mounting hole. The application has the effect of meeting the disease condition requirement of the lumbosacral segment vertebral tuberculosis.
Description
Technical Field
The application relates to the field of medical instruments, in particular to a front-path multidirectional self-locking titanium plate system.
Background
The lumbosacral section of the spine has a complex anatomical structure and special biomechanical characteristics, tuberculosis can cause the destruction and the collapse of vertebral body sclerotin at the part with paravertebral abscess, the treatment difficulty is large, and most patients need surgical treatment to eliminate focus and rebuild the stability of the spine. For a long time, the combined anterior and posterior operation mode brings great trauma to patients, and the anterior operation is concerned and advocated by more and more surgeons because of small trauma.
The front of the lumbosacral section is covered by a great vessel, and the iliac vessels and the sacral promontory crossed at two sides form a triangular avascular region together, and the region has no great vessel and nerve trunk running and is known as a safe operation region for the lumbosacral section anterior surgery. Tuberculosis inflammation can cause adhesion between iliac vessels and surrounding tissues, so that the difficulty of dissociating and drawing the vessels in the operation is increased, and the risk of vessel damage can be reduced by operating and arranging an implant in the avascular zone. In addition, the iliac vessels are influenced by the transition of cold abscess before sacrum, so that a gap is formed between the posterior wall of the iliac vessels and the front edge of a vertebral body on a sagittal plane, the gap provides a certain space for built-in objects after a focus clearing operation, and meanwhile, the residual abscess wall in front of the gap is separated from the iliac vessels, so that the risk of delayed vascular injury caused by pulsation of the iliac vessels and internal fixed friction can be avoided.
The existing built-in fixing devices aim at patients with complete vertebral degeneration of end plates and are not suitable for tuberculosis patients with irregular damage of end plates.
SUMMERY OF THE UTILITY MODEL
In order to meet the requirements of the disease condition of the lumbosacral segment tuberculosis of spine, the application provides an anterior multidirectional self-locking titanium plate system.
The application provides a multichannel auto-lock titanium board system of way adopts following technical scheme:
the utility model provides a way multidirectional auto-lock titanium board system in front, includes the titanium board body, the titanium board body is triangle-shaped and does not have the match of vascular district's shape, the mounting hole has been seted up at titanium board body both ends, install universal screw in the mounting hole.
Through adopting above-mentioned technical scheme, the triangle-shaped setting of titanium plate body makes and human no blood vessel district shape phase-match, and the angle that can adjust universal screw is made in the setting of universal screw, selects the region that the sclerotin destroys less to advance the nail.
Optionally, the universal screw includes a screw head and a screw rod fixedly connected to one end of the screw head, an external thread is processed on the outer wall of the screw head, an internal thread matched with the screw head is processed on the inner wall of the mounting hole, and a dislocation groove is formed in the mounting hole.
Through adopting above-mentioned technical scheme, the setting in dislocation groove makes when the screw rod is being driven into in the slope, and the screwhead can cooperate with the internal thread of mounting hole inner wall to fix the position of screwhead and titanium plate body.
Optionally, a notch is formed in one end, away from the screw head, of the screw rod, the notch is formed in the side wall of the screw rod, the notches are distributed at equal intervals along the circumference of the screw rod, and a cutting portion is formed between every two adjacent notches.
By adopting the technical scheme, when the screw is screwed into the lumbar vertebra or the sacrum, the plurality of cutting parts are simultaneously contacted with the lumbar vertebra or the sacrum, so that the contact area of the screw and the lumbar vertebra or the sacrum is increased, and the screwing is smoother.
Optionally, the external thread on the screw head is a tapered thread, and the internal thread in the mounting hole is a tapered thread.
Through adopting above-mentioned technical scheme for the cooperation of screwhead and titanium plate body is more stable.
Optionally, the mounting hole is a tapered opening, and the screw head is overall spherical.
Through adopting above-mentioned technical scheme, when passing the screw rod through the mounting hole and screwing the screwhead in the mounting hole, along with the screw rod screw in more, the screw thread head is fixed more firmly with the titanium plate body.
Optionally, the mounting holes are provided with six, the universal screws correspond to the six mounting holes one by one, and the mounting holes are a group of mounting holes which are respectively located at the top angle and the bottom edge of the titanium plate body.
By adopting the technical scheme, the two ends of the titanium plate body can be firmly fixed on the lumbar vertebra and the sacrum, so that the fixation is firmer.
Optionally, the three mounting holes at the top corner of the titanium plate body are distributed in a triangular shape.
By adopting the technical scheme, the stability of the installed titanium plate body is better.
Optionally, the middle part of the titanium plate body is provided with an observation hole.
By adopting the technical scheme, the focus part can be conveniently observed.
Optionally, an operation hole matched with the external auxiliary mounting rod is formed in the titanium plate body, and the operation hole is communicated with the observation hole.
By adopting the technical scheme, when the titanium plate body is installed, the external auxiliary installation rod is installed in the operation hole by means of the external auxiliary installation rod, so that the titanium plate body can be driven by the external auxiliary installation rod, the position of the titanium plate body is fixed, and the installation is more convenient.
Optionally, the titanium plate body is provided with a guide pin hole.
By adopting the technical scheme, the installation position of the titanium plate body can be determined through the guide pin hole, and the positioning is more convenient.
Optionally, two guide pin holes are formed in the guide pin.
By adopting the technical scheme, the two guide pin holes respectively correspond to the lumbar vertebra and the sacrum, so that the position of the titanium plate body relative to the lumbar vertebra and the position of the titanium plate body relative to the sacrum are fixed.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the shape of the titanium plate body is matched with that of the avascular zone, so that the titanium plate body can be more conveniently installed in the avascular zone without damaging blood vessels and nerve trunks, and the angle of the universal screw can be adjusted according to the bone damage degree by arranging the universal screw, so that the universal screw is installed in a zone with less bone damage, and the installed titanium plate body has better stability;
2. the arrangement of the dislocation groove enables the screw head to be connected with the mounting hole when the screw rod is obliquely inserted into the mounting hole;
3. the arrangement of the operation hole is convenient for a doctor to connect the titanium plate body and the external auxiliary installation rod together by means of the external auxiliary installation rod, so that the titanium plate body is installed, and the installation is more convenient.
Drawings
Fig. 1 is a schematic structural view of the entire present application.
Fig. 2 is a schematic view for showing a state that the titanium plate body is mounted on the lumbar vertebra and the sacrum.
FIG. 3 is a schematic view of a titanium plate body structure.
FIG. 4 is a schematic view of a universal screw configuration.
Description of reference numerals: 1. a titanium plate body; 11. mounting holes; 12. a dislocation groove; 13. an observation hole; 14. an operation hole; 15. a guide pin hole; 2. a universal screw; 21. a screw head; 22. a screw; 221. a notch; 222. a cutting section; 3. lumbar vertebrae; 4. the sacrum.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses a front-path multidirectional self-locking titanium plate system. Referring to fig. 1, the front multi-directional self-locking titanium plate system comprises a titanium plate body 1 and universal screws 2 for fixing the position of the titanium plate body 1.
Referring to fig. 2, the titanium plate body 1 is substantially triangular, the shape of the titanium plate body 1 is matched with the avascular zone at the lumbosacral section of the human body, and the titanium plate body 1 can be directly installed at the avascular zone, so that the installation is more convenient. The surface of the titanium plate body 1 is arc-shaped, and the bending radian of the titanium plate body is consistent with the radians of the lumbar vertebra 3 and the sacrum 4 of a human body. During installation, the inner side of the top corner of the titanium plate body 1 can be directly attached to the front side of the lumbar vertebra 3, and the inner side of the bottom edge of the titanium plate body 1 can be directly attached to the front side of the sacrum 4, so that the connection is more intimate. The titanium plate body 1 is provided with a mounting hole 11 for the universal screw 2 to penetrate through, the universal screw 2 penetrates through the mounting hole 11 and is screwed on the lumbar vertebra 3 or the sacrum 4, the position of the titanium plate body 1 can be fixed through the universal screw 2, and the titanium plate body 1 is mounted.
Referring to fig. 3 and 4, the universal screw 2 includes a screw head 21 and a screw rod 22 fixed to one end of the screw head 21, the screw head 21 is in a spherical shape as a whole, an external thread is processed on the outer wall of the screw head 21, an internal thread matched with the screw head 21 is processed on the inner wall of the mounting hole 11, a dislocation groove 12 is formed in the mounting hole 11, the length direction of the dislocation groove 12 is consistent with the length direction of the mounting hole 11, and the dislocation grooves 12 are formed at equal intervals along the inner wall of the mounting hole 11. When the screw 22 is obliquely threaded on the lumbar vertebra 3 or the sacrum 4 through the mounting hole 11, with the continuous screwing of the screw 22, the threads on one side of the screw head 21 are matched with the threads in the mounting hole 11, and with the continuous screwing of the screw 22, the threads on the other side of the screw head 21 are also matched with the threads in the mounting hole 11, and the arrangement of the dislocation grooves 12 enables the threads on the two opposite sides of the screw head 21 to be in dislocation matching with the threads on the two opposite sides of the inner wall of the mounting hole 11, so that the titanium plate body 1 is fixed on the lumbar vertebra 3 or the sacrum 4 through the universal screws 2. Wherein, the external screw thread on the screw head 21 is the awl screw thread, and the internal screw thread in the mounting hole 11 is also the awl screw thread for the cooperation of screw head 21 and mounting hole 11 inner wall is more stable.
The mounting hole 11 is a tapered hole, and its diameter gradually decreases from the outer side to the inner side of the titanium plate body 1. When the screw rod 22 is screwed on the lumbar vertebra 3 or the sacrum 4 from the mounting hole 11, the screw head 21 is also screwed into the mounting hole 11, and the screw head 21 is fixed with the inner wall of the mounting hole 11 more firmly as the screw rod 22 is screwed continuously.
In order to facilitate screwing the screw 22 into the lumbar vertebra 3 or the sacrum 4, one end of the screw 22 away from the screw head 21 is conical, a plurality of notches 221 are formed in one end of the screw 22 away from the screw head 21, the notches 221 are formed in the side wall of the screw 22, the notches 221 are arranged at equal intervals along the circumference of the screw 22, and a cutting portion 222 is formed between every two adjacent notches 221. When the screw 22 is screwed into the lumbar vertebra 3 or the sacrum 4, one end of the screw 22 far away from the screw head 21 is abutted to the lumbar vertebra 3 or the sacrum 4, and the plurality of cutting parts 222 are screwed into the lumbar vertebra 3 or the sacrum 4 simultaneously along with screwing of the screw 22, so that the contact area between the screw 22 and the lumbar vertebra 3 or the sacrum 4 is increased, and the screwing is smoother and more labor-saving.
Referring to fig. 1, six mounting holes 11 are formed, six universal screws 2 are also arranged, and the six universal screws 2 correspond to the six mounting holes 11 one by one. Wherein three mounting hole 11 is a set of apex angle and the base that is located titanium plate body 1 respectively, and wherein three mounting hole 11 of 1 apex angle department of titanium plate body is triangular distribution for it is more firm to fix, and the atress is more even.
Referring to fig. 3, the titanium plate body 1 is provided with an observation hole 13 for observing a lesion site. Still set up simultaneously on titanium plate body 1 with outside supplementary installation pole complex handle hole 14, handle hole 14 is the screw hole, and during installation titanium plate body 1, can drive titanium plate body 1 through outside supplementary installation pole and handle hole 14 threaded connection with the help of outside, it is more convenient just to place the position that needs the installation in the position that needs the installation, and it can directly be under the installation pole is followed titanium plate body 1 to spin with outside supplementary installation pole after the installation finishes. The operation hole 14 is communicated with the observation hole 13 and partially overlapped, so that the area of the titanium plate body 1 can be reduced, the overall strength of the titanium plate body 1 is increased, and the observation area of the observation port can be increased.
Referring to fig. 2 and 3, the titanium plate body 1 is further provided with two guide pin holes 15, and the two guide pin holes 15 correspond to guide pins fixed on the lumbar vertebra 3 and the sacrum 4, respectively. When the titanium plate is installed, two guide needles on the lumbar vertebra 3 and the sacrum 4 penetrate through two guide needle holes 15 on the titanium plate body 1, so that the relative positions of the titanium plate body 1 relative to the lumbar vertebra 3 and the titanium plate body 1 relative to the sacrum 4 can be fixed, and the positioning of the titanium plate body 1 is realized.
The implementation principle of a front-path multidirectional self-locking titanium plate system in the embodiment of the application is as follows: during the installation, screw the in operation hole 14 with outside supplementary installation pole screw earlier, just can place titanium board body 1 in no blood vessel area through outside supplementary installation pole, then operation titanium board body 1 makes two guide pin on lumbar vertebrae 3 and the sacrum 4 insert two guide pin holes 15 on the titanium board body 1 respectively, just can make the triangular apex angle department of titanium board body 1 and the laminating of lumbar vertebrae 3, the base department of titanium board body 1 triangle-shaped and the laminating of sacrum 4. Then according to the condition that the bone of a patient is damaged, the universal screw 2 is inserted into the mounting hole 11 according to a proper angle and is screwed on the lumbar vertebra 3 and the sacrum 4, so that the titanium plate body 1 is mounted, and the requirements of the disease condition of the lumbosacral segment vertebral tuberculosis are met.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a way multidirectional auto-lock titanium board system which characterized in that: the novel blood vessel-free titanium plate comprises a titanium plate body (1), wherein the titanium plate body (1) is in triangular shape and is matched with the shape of an avascular zone, mounting holes (11) are formed in two ends of the titanium plate body (1), and universal screws (2) are mounted in the mounting holes (11).
2. The anterior multi-directional self-locking titanium plate system according to claim 1, wherein: universal screw (2) include screwhead (21) and rigid coupling and be in screw rod (22) of screwhead (21) one end, it has the external screw thread to process on screwhead (21) outer wall, processing have on mounting hole (11) inner wall with screwhead (21) complex internal thread, it has dislocation groove (12) to open in mounting hole (11).
3. The forward multi-directional self-locking titanium plate system according to claim 2, wherein: one end of the screw rod (22) far away from the screw head (21) is provided with a notch (221), the notch (221) is arranged on the side wall of the screw rod (22), the notches (221) are distributed at equal intervals along the circumference of the screw rod (22), and a cutting part (222) is formed between every two adjacent notches (221).
4. The forward multi-directional self-locking titanium plate system according to claim 2, wherein: the external thread on the screw head (21) is a taper thread, and the internal thread in the mounting hole (11) is a taper thread.
5. The forward multi-directional self-locking titanium plate system according to claim 2, wherein: the mounting hole (11) is a conical opening, and the screw head (21) is overall spherical.
6. The anterior multi-directional self-locking titanium plate system according to claim 1, wherein: mounting hole (11) are provided with six, universal screw (2) are provided with six, six universal screw (2) and six mounting hole (11) one-to-one, three mounting hole (11) are a set of and are located respectively titanium board body (1) apex angle and base department.
7. The anterior multi-directional self-locking titanium plate system according to claim 1, wherein: the middle part of the titanium plate body (1) is provided with an observation hole (13).
8. The anterior multi-directional self-locking titanium plate system according to claim 7, wherein: the titanium plate is characterized in that an operating hole (14) matched with an external auxiliary mounting rod is formed in the titanium plate body (1), and the operating hole (14) is communicated with the observation hole (13).
9. The anterior multi-directional self-locking titanium plate system according to claim 1, wherein: the titanium plate body (1) is provided with a guide pin hole (15).
10. The anterior multi-directional self-locking titanium plate system according to claim 9, wherein: two guide pin holes (15) are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328925.9U CN214712741U (en) | 2020-12-31 | 2020-12-31 | Front-path multidirectional self-locking titanium plate system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023328925.9U CN214712741U (en) | 2020-12-31 | 2020-12-31 | Front-path multidirectional self-locking titanium plate system |
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| Publication Number | Publication Date |
|---|---|
| CN214712741U true CN214712741U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023328925.9U Active CN214712741U (en) | 2020-12-31 | 2020-12-31 | Front-path multidirectional self-locking titanium plate system |
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| CN (1) | CN214712741U (en) |
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- 2020-12-31 CN CN202023328925.9U patent/CN214712741U/en active Active
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