CN210019588U - Novel biological nail stick fixing system of way of escape - Google Patents
Novel biological nail stick fixing system of way of escape Download PDFInfo
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- CN210019588U CN210019588U CN201821722586.2U CN201821722586U CN210019588U CN 210019588 U CN210019588 U CN 210019588U CN 201821722586 U CN201821722586 U CN 201821722586U CN 210019588 U CN210019588 U CN 210019588U
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- biological
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- connecting rod
- spring
- rod
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Abstract
The utility model discloses a novel posterior biological nail and rod fixing system, which comprises a biological connecting rod and screws connected with two ends of the biological connecting rod; the middle position of the biological connecting rod is provided with a spring; the biological connecting rod is sleeved with a hose. The utility model provides a can remain the effectual vertebra and bend and stretch, activity such as rotatory, have certain restriction's neotype back way biological type nail stick fixed system again to the unusual activity of vertebra like unstability, slippage, lateral bending simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a novel biological type nail stick fixed system of way backward.
Background
Spinal cord injury caused by thoracolumbar vertebral body burst fracture, the main purpose of the operation is decompression rather than fixation, namely, the compression of the spinal cord is removed, the normal shape of the spinal cord is recovered, and the recovery condition of the spinal cord is given.
Under the normal state, along with the activity of the chest and waist sections, the spinal cord cone and nerve roots also have small-range activity; it has been reported that the normal human spine moves about 1.5-2cm in the fully flexed and extended state, and the thoracolumbar region is the transition from the spinal cone to the cauda equina, which is the most active part of the spinal cord; movement of the spinal cord within the spinal canal can stimulate local microcirculation, especially blood circulation in the coronary arteries of the large segment of the thoracolumbar region; after the thoracolumbar vertebral body bursts and fractures, except for direct compression, spinal cord ischemia is caused by local injury, so that neurons in the spinal cord are injured, and irreversible spinal cord function damage can also be caused; thus, after restoring spinal cord morphology, improving local blood circulation is another necessary condition to promote recovery from spinal cord injury.
The existing non-fusion fixing system is used for treating diseases such as lumbar instability, lumbar stenosis and the like, has certain defects in treating comminuted fracture of the spine, has weak rigidity and more activity maintenance, so that the height of a front injured vertebra is difficult to maintain due to the buckling activity of the linking device; the linking device cannot be subjected to plasticity and pre-bending, and does not have the fan-shaped opening function of the traditional fixed connecting rod; the linking part is specially connected with the nail tail, and the single-section expansion cannot be carried out; the instrument is therefore more limited for high recovery from a blow-out fracture of the vertebral body.
Disclosure of Invention
To the above problem, the utility model provides a can remain the vertebra effectual activity such as crook and stretch, rotation, have certain restriction effect's neotype back way biotype nail stick fixing system again to the unusual activity of vertebra simultaneously such as unstability, slippage, lateral curvature.
In order to achieve the above purpose, the technical solution of the present invention is as follows: a novel posterior biological nail rod fixing system comprises a biological connecting rod and screws connected to two ends of the biological connecting rod; the middle position of the biological connecting rod is provided with a spring; the biological connecting rod is sleeved with a hose.
The utility model discloses further optimize, the screw include first screw and second screw; the top of the first screw is provided with a locking threaded hole; the bottom of the locking threaded hole is provided with a cross groove for screwing a first screw; the locking threaded hole is provided with a locking nut which is matched with the locking threaded hole; the outer side of the locking nut is provided with an external thread; the top of the locking nut is provided with a cross groove; the side of the first screw is provided with a through hole for passing through the biological connecting rod; one end of the biological connecting rod is provided with a thread and a first screw cap; the side edge of the second screw is provided with a threaded hole matched with the biological connecting rod; and the top of the second screw is provided with a cross groove for screwing the second screw. In this way, respectively will screw first screw and second screw and screw, the doctor holds the biotype connective bar and has screw thread one end, pass the biotype connective bar the second screw, push away to in the through-hole of first screw, rotatory biotype connective bar, screw thread on the biotype connective bar is mutually supported with the screw hole of second screw side, it is fixed to screw the enhancement through first nut, further prevent that the biotype connective bar from droing, the lock nut at first screw top of screwing, accomplish fixedly, moreover, the steam generator is simple in structure, and convenient for operation, the working strength of doctor is lightened, and the work efficiency is improved, and the operation time is shortened.
The utility model discloses further optimize, be equipped with the scale on biological biotype connective bar. Through the mode, the scales on the biological connecting rod are convenient to select, and the operation finishing speed is further improved.
The utility model is further optimized, the transverse and radial cross section of the spring is circular; the effective number of turns of the spring is 3-5 turns. Through the mode, the cross section of the spring is circular, the effective number of turns is 3-5 turns, and the spring is simple in design and manufacture and low in cost.
The utility model discloses further optimize, biological type connective bar moderate degree preflex, the material of adoption is special nickel titanium alloy.
The utility model has the advantages and beneficial effect as follows:
1. the spring position in the middle of the biological connecting rod of the utility model can keep the vertebra to effectively bend, stretch, rotate and other activities, and simultaneously has certain limiting function to the abnormal activities of the vertebra such as instability, slippage, lateral bending and the like.
2. The utility model discloses biological type connective bar middle spring has normal working length and minimum length, utilizes the hook forceps holder to tighten spring position both ends when strutting in the operation, makes it be in the shortest state, becomes rigid structure temporarily, then uses the ware of strutting to strut, relaxs the hook forceps back, and the spring resumes to working length by minimum length, has the effect of "secondary struts", can recover better and hinder the awl height.
3. The straight parts at the two ends of the biological connecting rod of the utility model are longer, and can be moderately pre-bent, after pre-bending, because the part connected with the spring part is still straight, the mechanical conduction of the spring part is hardly influenced, and stress concentration caused by pre-bending can be avoided; the expansion can effectively utilize the fan effect to more effectively reset the height of the injured cone.
4. The utility model discloses biological type connective bar can maintain the normal machine structural integrity and the biomechanics characteristic of backbone as far as because of the existence of spring part, avoids stress concentration, reduces screw root stress load, reduces the broken screw and excellent possibility absolutely, reduces the degeneration that closes on the segment section simultaneously.
5. The utility model discloses biological type connecting rod material is special nickel titanium alloy, has higher intensity, can avoid too much backbone home range, even the extremely bucking of backbone, adjacent centrum also can not oppress and hinder the vertebra, influences union fracture.
6. The utility model discloses well hose cover has improved the stability of system on biological type connective bar, and the hose makes the system reset and fixed respond well, further is favorable to resuming the normal physiology function of human backbone.
7. The utility model discloses simple structure, convenient operation alleviates doctor's working strength, improves work efficiency, shortens the operation time.
Drawings
Fig. 1 is a schematic view of the structure application of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a B-B sectional view of the present invention.
Fig. 4 is a schematic view of the prebending of the biological connecting rod of the present invention.
Sequence numbers in the figures and corresponding names:
1-second screw, 2-biological connecting rod, 3-spring, 4-hose, 5-first screw, 6-first nut and 7-locking nut.
Detailed Description
The invention will be described in further detail with reference to the following drawings and detailed description:
example 1:
as shown in fig. 1-4, a novel posterior biological nail rod fixing system comprises a biological connecting rod and screws connected to two ends of the biological connecting rod 2; the middle position of the biological connecting rod 2 is provided with a spring 3; the biological connecting rod 2 is sleeved with a hose 4.
The screw comprises a first screw 5 and a second screw 1; the top of the first screw 5 is provided with a locking threaded hole; the bottom of the locking threaded hole is provided with a cross groove for screwing the first screw 5; the locking threaded hole is provided with a locking nut 7 which is matched with each other; the outer side of the locking nut 7 is provided with an external thread; the top of the locking nut 7 is provided with a cross groove; the side edge of the first screw 5 is provided with a through hole for passing through the biological connecting rod 2; one end of the biological connecting rod 2 is provided with a thread and a first screw cap 6; the side edge of the second screw 1 is provided with a threaded hole matched with the biological connecting rod 2; the top of the second screw 1 is provided with a cross slot for screwing the second screw 1.
Scales are arranged on the biological connecting rod 2 of the organism.
The cross section of the spring 3 in the transverse and radial directions is circular; the effective number of turns of the spring 3 is 3-5 turns.
The biological connecting rod 2 can be moderately pre-bent, and the adopted material is special nickel-titanium alloy.
It should be understood that the above-described embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This list is not intended to be exhaustive or exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (3)
1. A novel posterior biological nail rod fixing system is characterized by comprising a biological connecting rod and screws connected to two ends of the biological connecting rod (2); the middle position of the biological connecting rod (2) is provided with a spring (3); the biological connecting rod (2) is sleeved with a hose (4);
the screw comprises a first screw (5) and a second screw (1); the top of the first screw (5) is provided with a locking threaded hole; the bottom of the locking threaded hole is provided with a cross groove for screwing a first screw (5); the locking threaded hole is provided with a locking nut (7) which is matched with each other; the outer side of the locking nut (7) is provided with an external thread; the top of the locking nut (7) is provided with a cross groove; a through hole for passing through the biological connecting rod (2) is formed in the side edge of the first screw (5); one end of the biological connecting rod (2) is provided with a thread and a first screw cap (6); the side edge of the second screw (1) is provided with a threaded hole matched with the biological connecting rod (2); the top of the second screw (1) is provided with a cross groove for screwing the second screw (1);
the cross section of the spring (3) in the transverse and radial directions is circular; the effective number of turns of the spring (3) is 3-5 turns.
2. A new posterior biotype nail rod anchoring system according to claim 1, characterized in that the biotype connection rod (2) of the creature is provided with graduations.
3. A new posterior biotype nail and rod anchoring system according to claim 1, characterized in that the biotype connection rod (2) is moderately pre-bent and made of nitinol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821722586.2U CN210019588U (en) | 2018-10-24 | 2018-10-24 | Novel biological nail stick fixing system of way of escape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821722586.2U CN210019588U (en) | 2018-10-24 | 2018-10-24 | Novel biological nail stick fixing system of way of escape |
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| Publication Number | Publication Date |
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| CN210019588U true CN210019588U (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821722586.2U Active CN210019588U (en) | 2018-10-24 | 2018-10-24 | Novel biological nail stick fixing system of way of escape |
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| CN (1) | CN210019588U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112716582A (en) * | 2020-12-22 | 2021-04-30 | 浙江大学医学院附属邵逸夫医院 | Pedicle screw rod internal fixing device with positioning pin as inner core |
-
2018
- 2018-10-24 CN CN201821722586.2U patent/CN210019588U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112716582A (en) * | 2020-12-22 | 2021-04-30 | 浙江大学医学院附属邵逸夫医院 | Pedicle screw rod internal fixing device with positioning pin as inner core |
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