CN111616755B - Vertebral plate opening device - Google Patents
Vertebral plate opening device Download PDFInfo
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- CN111616755B CN111616755B CN202010404048.4A CN202010404048A CN111616755B CN 111616755 B CN111616755 B CN 111616755B CN 202010404048 A CN202010404048 A CN 202010404048A CN 111616755 B CN111616755 B CN 111616755B
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- rod
- fixed rod
- fixed
- opening device
- plate
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
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- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The invention discloses a vertebral plate opening device which comprises a fixed rod and a movable rod, wherein the middle parts of the fixed rod and the movable rod are mutually hinged, the fixed rod comprises an upper fixed rod at the upper end and a lower fixed rod at the lower end, a telescopic mechanism is arranged between the upper fixed rod and the lower fixed rod, a fixed plate is arranged at the lower end of the lower fixed rod, the movable rod comprises an upper movable rod at the upper end and a lower movable rod at the lower end, the lower end of the upper movable rod and the upper end of the lower movable rod are mutually hinged, the middle part of the upper movable rod and the middle part of the upper fixed rod are mutually hinged, and a warping plate is arranged at the lower end of the lower movable rod. The invention aims to solve the problems that the vertebral plate is easy to damage the lateral articular process and press vertebral artery when the vertebral plate is pried by using a wane at present, and provides a vertebral plate opening device.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a vertebral plate opening device.
Background
The cervical vertebrae of the human body are the segment of the spine with the smallest volume, the greatest flexibility and the highest frequency of movement. Because various loads and strains are continuously born and the life of people is prolonged, the morbidity of cervical vertebra instability, cervical intervertebral disc protrusion and cervical spondylosis caused by degeneration becomes the most common diseases of the orthopedics outpatient service, and a plurality of patients possibly invade spinal nervous tissues to cause limb dysfunction, even cause quadriplegia and cause great pain to the patients and relatives due to the disease change. At present, the cervical vertebra posterior vertebroplasty is mostly adopted for clinically treating the diseases, namely, the vertebral canal is opened by adopting a posterior operation mode and is supported by a miniature titanium plate to achieve the purpose of expanding the spinal cord and reducing the pressure of the spinal cord. When the method is adopted, the vertebral plate behind the cervical vertebra is required to be opened, then the Z-shaped titanium plate is placed to support the door opening side, the two sides of the vertebral plate are ground into grooves firstly, then the bone is peeled to be used as a warping plate to pry one side, and the warping plate takes the outer articular process of the cervical vertebra as a fulcrum in the prying process, so that the outer articular process is easily damaged and the vertebral artery is pressed, the stability of the cervical vertebra is damaged, or a blood vessel is damaged, and medical accidents are caused.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, solve the problems that the vertebral plate is easy to damage the lateral articular process and press vertebral artery when being pried by the wane at present, and provide a vertebral plate opening device.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a vertebral plate opening device, includes the mutual articulated pole and the pole of deciding in middle part, decide the pole and decide the pole down including the last pole of deciding of upper end and lower extreme down of deciding the pole, on decide the pole and decide down and be provided with telescopic machanism between the pole, it is provided with the fixed plate to decide the pole lower extreme down, move the pole and include the lower extreme down of the last pole and the upper end of moving down, move the pole middle part and decide the pole middle part articulated each other on going up, the down pole lower extreme is provided with the wane, the cross-section of fixed plate and wane all is the isosceles triangle of inversion, and the fixed plate is unanimous with down pole length direction, and the wane forms the contained angle with down pole length direction, the contained angle is alpha, alpha is 120-135.
In order to further implement the present invention, the following technical solutions may be preferably selected:
preferably, go up to move the pole and go up and decide and still be provided with adjustment mechanism between the pole, adjustment mechanism includes locating piece, lead screw, bull stick and connecting plate, the quantity of connecting plate is two, and two connecting plates are located respectively and move the pole and decide the pole upper end and rotate with last pole and last pole respectively and be connected, the lead screw both ends are threaded sleeve respectively on two connecting plates, and lead screw one end is positive screw thread, the other end is reverse screw thread, the locating piece is the hollow shell form, and the locating piece rotates the cover and closes at the lead screw middle part, the bull stick rotates with the locating piece to be connected and is connected with the lead screw transmission.
Preferably, a worm wheel is fixedly sleeved in the middle of the screw rod, a worm is fixedly sleeved on the rotating rod, and the worm wheel are meshed with each other.
Preferably, the connecting plate is circular plate-shaped, and the upper ends of the upper fixed rod and the upper moving rod are circular plate-shaped.
Preferably, the distance between the two connecting plates and the hinge position of the upper fixed rod and the upper moving rod is equal.
Preferably, the telescopic mechanism comprises an adjusting sleeve, the adjusting sleeve is in a circular tube shape, one end of the inner portion of the adjusting sleeve is provided with a positive thread, the other end of the inner portion of the adjusting sleeve is provided with a negative thread, and the lower end of the upper fixed rod and the upper end of the lower fixed rod are respectively sleeved on the upper end and the lower end of the adjusting sleeve in a threaded manner.
Preferably, the length of the lower moving rod is equal to the distance between the lower end of the upper moving rod and the hinged position of the upper moving rod and the upper fixed rod.
Preferably, when the direction of the lower moving rod is consistent with that of the upper moving rod, the distance between the lower end of the lower moving rod and the hinged position of the upper fixed rod is larger than the distance between the lower end of the lower fixed rod and the hinged position of the upper moving rod and the hinged position of the upper fixed rod.
Preferably, both sides of the upper end of the fixing plate are provided with positioning plates.
Preferably, the inner side of the lower end of the rocker is provided with a saw-toothed protrusion.
The invention has the beneficial effects that:
when the cervical vertebra fixing device is used, the fixing plate and the wane are respectively inserted into the grooves ground at two sides of the vertebral plate, the length of the lower section of the fixed rod is adjusted through the telescopic mechanism to enable the direction of the lower end of the fixed rod to be consistent with that of the upper end of the fixed rod, then the upper end of the movable rod rotates towards the upper end of the fixed rod to drive the wane at the lower end of the lower rod to move towards the inner side and the upper side, so that the vertebral plate is pried, the movable rod and the fixed rod apply force to the inner side of the vertebral plate in the prying process, the articular process and the artery at the outer side of the cervical vertebra cannot be pressed, and medical accidents are avoided.
The invention is also provided with an adjusting mechanism, and the upper ends of the moving rod and the fixed rod are contracted inwards by rotating the rotating rod from one side by hand, so that the operation is convenient, the force is transmitted through the screw thread, the operation is more stable and reliable, the phenomenon that the vertebral plate is opened too fast due to over-force cannot occur, and the occurrence probability of medical accidents is further reduced.
Drawings
Figure 1 is a schematic view of a lamina opening device of the present invention.
FIG. 2 is a schematic view of a lamina opening device of the present invention in a pre-open state.
FIG. 3 is a schematic view of an opened state of a vertebral plate opening device of the present invention.
Figure 4 is a schematic view of the structure of a fixed rod of the lamina opening device of the present invention.
Figure 5 is a side view of a fixed rod of a lamina opening device of the present invention.
Figure 6 is a schematic view of the structure of the moving rod of the lamina opening device of the present invention.
Figure 7 is a side view of a moving rod of a lamina opening device of the present invention.
Figure 8 is a schematic view of the structure of the lower rod of a lamina opening device of the present invention.
The reference numbers in the figures are: the device comprises a fixed rod 1, a fixed rod 2, a fixed plate 3, an upper moving rod 4, a lower moving rod 5, a rocker 6, a positioning block 7, a screw rod 8, a rotating rod 9, a connecting plate 10, an adjusting sleeve 11 and a positioning plate 12.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Example 1: as shown in fig. 1 to 8, a vertebral plate opening device, including a fixed rod and a movable rod hinged to each other at the middle, the fixed rod includes an upper fixed rod 1 at the upper end and a lower fixed rod 2 at the lower end, a telescopic mechanism is arranged between the upper fixed rod 1 and the lower fixed rod 2, a fixed plate 3 is arranged at the lower end of the lower fixed rod 2, the movable rod includes an upper movable rod 4 at the upper end and a lower movable rod 5 at the lower end, the lower end of the upper movable rod 4 is hinged to the upper end of the lower movable rod 5, the middle of the upper movable rod 4 is hinged to the middle of the upper fixed rod 1, a rocker 6 is arranged at the lower end of the lower movable rod 5, the cross sections of the fixed plate 3 and the rocker 6 are inverted isosceles triangles, the fixed plate 3 is consistent with the length direction of the lower fixed rod 2, the rocker 6 forms an included angle with the length direction of the lower movable rod 5, the included angle is alpha, and the alpha is 135 deg.
An adjusting mechanism is further arranged between the upper fixed rod 4 and the upper fixed rod 1, the adjusting mechanism comprises a positioning block 7, a screw rod 8, a rotating rod 9 and connecting plates 10, the number of the connecting plates 10 is two, the connecting plates 10 are circular plate-shaped, the upper ends of the upper fixed rod 1 and the upper fixed rod 4 are both circular ring plate-shaped, the two connecting plates 10 are respectively positioned at the upper ends of the upper fixed rod 4 and the upper fixed rod 1 and are respectively rotatably connected with the upper fixed rod 4 and the upper fixed rod 1, the distance between the two connecting plates 10 and the hinged part of the upper fixed rod 1 and the upper fixed rod 4 is equal, the two ends of the screw rod 8 are respectively sleeved on the two connecting plates 10 in a threaded manner, one end of the screw rod 8 is a positive screw thread, the other end of the screw rod is a reverse screw thread, the positioning block 7 is rotatably sleeved in the middle of the screw rod 8, the rotating rod 9 is rotatably connected with the positioning block 7 and is in a transmission connection with the screw rod 8, the middle of the screw rod 8 is fixedly sleeved with a worm wheel, the rotating rod 9 is fixedly sleeved with a worm, and the worm wheel is mutually meshed with the worm wheel.
In order to rotate the rotating shaft conveniently, in this embodiment, a hand wheel is fixedly arranged at one end of the worm extending out of the positioning block 7.
In order to optimize the product structure, telescopic machanism includes adjusting collar 11, and adjusting collar 11 is the pipe form, and the inside one end of adjusting collar 11 is provided with positive screw thread, and the other end is provided with the contrary screw thread, goes up 1 lower extreme of fixed rod and 2 upper ends of lower fixed rod and screw thread registrate respectively in the upper end and the lower extreme of adjusting collar 11.
In order to ensure that the vertebral plate is reliably pried open, in the embodiment, the length of the lower moving rod 5 is equal to the distance between the lower end of the upper moving rod 4 and the hinged part of the upper moving rod 4 and the upper fixed rod 1; when the direction of the lower moving rod 5 is consistent with that of the upper moving rod 4, the distance between the lower end of the lower moving rod 5 and the hinged position of the upper moving rod 4 and the upper fixed rod 1 is larger than the distance between the lower end of the lower fixed rod 2 and the hinged position of the upper moving rod 4 and the upper fixed rod 1; both sides of the upper end of the fixed plate 3 are provided with positioning plates 12, and the inner side of the lower end of the wane 6 is provided with saw-toothed protrusions.
During the use, fixed plate 3 and wane 6 insert respectively in the fluting that the vertebral lamina both sides ground out, length through telescopic machanism regulation fixed rod hypomere makes the lower beam 5 unanimous with 4 directions on the upper beam, then move the upper beam and lean on to rotate to fixed rod upper end, drive the wane 6 of lower beam 5 lower extreme and move to the inboard top, when moving the upper beam and the fixed rod upper end when inwards contracting, the upper beam 4 lower extreme also contracts to the fixed rod, simultaneously because the width that the section was opened to the vertebral lamina is the fixed value, the distance between fixed plate 3 to the wane 6 does not change, so the lower beam 5 rotates to the outside relative upper beam 4, thereby prize the vertebral lamina, it all exerts to the vertebral lamina inboard to prize the in-process pole and fixed rod, can not harm outside articular process and oppression vertebral artery, avoid appearing the medical accident.
The hand makes move pole and decide pole upper end and inwards shrink from one side through rotating bull stick 9, not only convenient operation to strength passes through the screw thread transmission, and is more steady, reliable, can not appear exerting oneself the phenomenon that the too fast vertebral plate was opened too hard, further reduces medical accident's emergence probability
Example 2: embodiment 2 is the same as embodiment 1, and the description is not repeated, but the difference is that a telescopic mechanism is arranged between the middle part of the lower moving rod 5 and the lower end of the upper moving rod 4 and the hinged part of the upper moving rod 4 and the upper fixed rod 1.
Before the vertebral plate is pried, firstly measuring the distance between the two milled slots, then adjusting a telescopic mechanism to enable an included angle between the fixed rod and the moving rod to be 45 degrees and enable the direction of the lower moving rod 5 to be consistent with that of the upper moving rod 4, enabling the fixed plate 3 and the wane 6 to be positioned in the same horizontal height and enabling the distance between the fixed plate 3 and the wane 6 to be equal to the distance between the two slots, and then respectively inserting the fixed plate 3 and the wane 6 into the two slots to pry the vertebral plate; after the grooving is ground, the process of adjusting the invention is synchronously carried out with other operation preparation processes, thereby reducing the operation time, ensuring the invention to be in a better use state and ensuring the success rate of the operation.
The above-described embodiments are merely preferred embodiments of the present invention, and not intended to limit the scope of the invention, so that equivalent changes or modifications in the structure, features and principles described in the present invention should be included in the claims of the present invention.
Claims (8)
1. The vertebral plate opening device is characterized by comprising a fixed rod and a movable rod which are hinged to each other at the middle part, wherein the fixed rod comprises an upper fixed rod (1) at the upper end and a lower fixed rod (2) at the lower end, a telescopic mechanism is arranged between the upper fixed rod (1) and the lower fixed rod (2), a fixed plate (3) is arranged at the lower end of the lower fixed rod (2), the movable rod comprises an upper movable rod (4) at the upper end and a lower movable rod (5) at the lower end, the lower end of the upper movable rod (4) is hinged to the upper end of the lower movable rod (5), the middle part of the upper movable rod (4) is hinged to the middle part of the upper fixed rod (1), a rocker (6) is arranged at the lower end of the lower movable rod (5), the cross sections of the fixed plate (3) and the rocker (6) are both in an inverted isosceles triangle shape, the fixed plate (3) and the lower fixed rod (2) are consistent in length direction, an included angle is formed between the rocker (6) and the length direction of the lower movable rod (5), the included angle is alpha is 120-135 degrees;
an adjusting mechanism is further arranged between the upper moving rod (4) and the upper fixed rod (1), the adjusting mechanism comprises a positioning block (7), a screw rod (8), two rotating rods (9) and two connecting plates (10), the two connecting plates (10) are respectively positioned at the upper ends of the upper moving rod (4) and the upper fixed rod (1) and are respectively rotatably connected with the upper moving rod (4) and the upper fixed rod (1), two ends of the screw rod (8) are respectively sleeved on the two connecting plates (10) in a threaded manner, one end of the screw rod (8) is a positive thread, the other end of the screw rod is a reverse thread, the positioning block (7) is in a hollow shell shape, the positioning block (7) is rotatably sleeved in the middle of the screw rod (8), and the rotating rods (9) are rotatably connected with the positioning block (7) and are in transmission connection with the screw rod (8);
the connecting plate (10) is in a circular plate shape, and the upper ends of the upper fixed rod (1) and the upper moving rod (4) are in circular plate shapes.
2. The vertebral plate opening device according to claim 1, characterized in that a worm wheel is fixedly sleeved in the middle of the screw rod (8), a worm is fixedly sleeved on the rotating rod (9), and the worm wheel are meshed with each other.
3. A lamina opening device according to claim 1, characterized in that the two connecting plates (10) are equidistant from the articulation of the upper stationary rod (1) and the upper moving rod (4).
4. The vertebral plate opening device according to claim 1, characterized in that said telescopic means comprise an adjusting sleeve (11), said adjusting sleeve (11) is in the shape of a circular tube, one end of the inside of the adjusting sleeve (11) is provided with a positive thread, the other end is provided with a negative thread, the lower end of said upper fixed rod (1) and the upper end of said lower fixed rod (2) are respectively in threaded engagement with the upper end and the lower end of the adjusting sleeve (11).
5. A lamina opening device according to claim 1, characterized in that the length of the lower rod (5) is equal to the distance between the lower end of the upper rod (4) and the hinge of the upper rod (4) and the upper stationary rod (1).
6. The vertebral plate opening device according to claim 1, characterized in that when the direction of the lower moving rod (5) is consistent with that of the upper moving rod (4), the distance between the lower end of the lower moving rod (5) and the hinged part of the upper moving rod (4) and the upper fixed rod (1) is larger than the distance between the lower end of the lower fixed rod (2) and the hinged part of the upper moving rod (4) and the upper fixed rod (1).
7. A lamina opening device according to claim 1, characterized in that the fixing plate (3) is provided with positioning plates (12) on both sides of its upper end.
8. A lamina opening device according to claim 1, characterized in that the inner side of the lower end of the rocker (6) is provided with serrations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404048.4A CN111616755B (en) | 2020-05-13 | 2020-05-13 | Vertebral plate opening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010404048.4A CN111616755B (en) | 2020-05-13 | 2020-05-13 | Vertebral plate opening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111616755A CN111616755A (en) | 2020-09-04 |
| CN111616755B true CN111616755B (en) | 2023-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010404048.4A Active CN111616755B (en) | 2020-05-13 | 2020-05-13 | Vertebral plate opening device |
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| CN (1) | CN111616755B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203749466U (en) * | 2014-02-20 | 2014-08-06 | 西安交通大学 | Spine vertebral plate retractor |
| WO2014117561A1 (en) * | 2013-01-30 | 2014-08-07 | 南京医科大学第一附属医院 | Exposure apparatus for paraspinal muscle clearance approach with small incision on spinal posterior |
| CN105615976A (en) * | 2016-01-22 | 2016-06-01 | 郑州大学第一附属医院 | Opener for vertebral plate |
| CN106859711A (en) * | 2016-12-30 | 2017-06-20 | 四川大学华西医院 | Device is raised in a kind of cervical vertebra single open-door operation vertebral plate rotation |
-
2020
- 2020-05-13 CN CN202010404048.4A patent/CN111616755B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014117561A1 (en) * | 2013-01-30 | 2014-08-07 | 南京医科大学第一附属医院 | Exposure apparatus for paraspinal muscle clearance approach with small incision on spinal posterior |
| CN203749466U (en) * | 2014-02-20 | 2014-08-06 | 西安交通大学 | Spine vertebral plate retractor |
| CN105615976A (en) * | 2016-01-22 | 2016-06-01 | 郑州大学第一附属医院 | Opener for vertebral plate |
| CN106859711A (en) * | 2016-12-30 | 2017-06-20 | 四川大学华西医院 | Device is raised in a kind of cervical vertebra single open-door operation vertebral plate rotation |
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| Publication number | Publication date |
|---|---|
| CN111616755A (en) | 2020-09-04 |
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