CN210931756U - Be used for percutaneous wicresoft's pedicle of vertebral arch screw to put into device - Google Patents
Be used for percutaneous wicresoft's pedicle of vertebral arch screw to put into device Download PDFInfo
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- CN210931756U CN210931756U CN201921391477.1U CN201921391477U CN210931756U CN 210931756 U CN210931756 U CN 210931756U CN 201921391477 U CN201921391477 U CN 201921391477U CN 210931756 U CN210931756 U CN 210931756U
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Abstract
The utility model provides a be used for percutaneous wicresoft's pedicle of vertebral arch screw to put into device, it includes guide pillar (1) its characterized in that, and the cover is equipped with first sleeve (2) on guide pillar (1), and the cover is equipped with second sleeve (3) on first sleeve (2), and the cover is equipped with third sleeve (4) on second sleeve (3), and the cover is equipped with fourth sleeve (5) on third sleeve (4), is equipped with a pair of fin (6) at fourth sleeve (5) one end tip. The utility model discloses simple structure, convenient to use, can be quick accurate set up the passageway of putting into for pedicle of vertebral arch screw, effectual improved the success rate when pedicle of vertebral arch screw puts into.
Description
The technical field is as follows:
the utility model belongs to the technical field of surgical instruments and specifically relates to a be used for percutaneous wicresoft's pedicle of vertebral arch screw to put into device.
Background art:
with the development of science and technology, the amount of thoracolumbar internal fixation operations in spinal surgery is increasing, and spinal pedicle screw fixation has been widely used for treating fractures, tumors, infected or degenerated spines. Unlike conventional open surgery, screws currently in use are typically cannulated screws, and cannulated screws may significantly reduce their bending or fatigue strength. Percutaneous nails used in a fixing system in minimally invasive spine surgery are generally hollow nails, and the hollow screws have the defects of insufficient fixing strength, limited orthopedic force and the like, and are inferior to open surgery in terms of restoring the height of a damaged vertebra and correcting kyphosis.
The hollow nail is expensive and needs a special tool when being placed into the hollow nail, so the operation cost of a patient placing the hollow nail is high. In addition, the hollow nail has mechanical defects, and the angle resetting capability is much smaller than that of a common nail. The postoperative care costs are also higher than with solid staples. Cannulated screws are limited to the state of the art and material quality, and have limited strength compared to solid screws. Especially when the superior thoracic pedicle is thin, limiting its use.
Therefore, there is an urgent need to design a pedicle screw implantation device for percutaneous minimally invasive surgery.
The utility model has the following contents:
the utility model provides a device for placing percutaneous minimally invasive pedicle screws, which aims to overcome the defects in the prior art.
The application provides the following technical scheme:
a device for percutaneous minimally invasive pedicle screw implantation is characterized in that: the novel guide post structure comprises a guide post, wherein a central through hole is formed in the guide post, a first sleeve is sleeved on the guide post, a second sleeve is sleeved on the first sleeve, a third sleeve is sleeved on the second sleeve, a fourth sleeve is sleeved on the third sleeve, a pair of fins is arranged at the upper end of the fourth sleeve, the fins and the fourth sleeve are of an integrated structure, and a group of sharp teeth are arranged at the lower end of the fourth sleeve.
On the basis of the technical scheme, the following further technical scheme can be provided:
the lower end of the guide post is provided with a conical narrowing part, the lower end of the first sleeve is provided with a first narrowing part, the lower end of the second sleeve is provided with a second narrowing part, the lower end of the third sleeve is provided with a third narrowing part, and the lower end of the fourth sleeve is provided with a fourth narrowing part.
And reinforcing ribs are welded between the fins and the fourth sleeve.
Utility model advantage:
the utility model discloses simple structure, convenient to use, can be fast accurate for putting into solid pedicle of vertebral arch screw and provide operation channel for solid pedicle of vertebral arch screw can be used for percutaneous wicresoft's operation, and then has improved the quick recovered nature of operation by a wide margin, reduces the complication of operation, reduces patient's operation wound and the disconnected nail phenomenon of screw nail body, has important clinical meaning.
Description of the drawings:
fig. 1 is a perspective view of the present invention;
fig. 2 is a schematic structural diagram of the present invention.
The specific implementation mode is as follows:
as shown in figures 1 and 2, the percutaneous minimally invasive pedicle screw implanting device comprises a guide post 1, wherein the lower end part of the guide post 1 is provided with a conical narrowing part 1b which is coaxially distributed, and a central through hole 1a is formed in the guide post 1 and the narrowing part 1b along the axial line. The guide post 1 and the narrowing part 1b are of an integrated structure.
The outer side of the guide post 1 is inserted and sleeved with a first sleeve 2, and the lower end part of the first sleeve 2 is provided with a first conical narrowing part 2a which is coaxially distributed. The inner wall of the first sleeve 2 and the first sleeve 2 are coaxially distributed and axially penetrate through the first sleeve 2 and the first narrowing portion 2 a. The horizontal section of the inner cylinder wall of the first sleeve 2 is circular, and the diameter of the inner cylinder wall is slightly larger than that of the guide pillar 1. So that the first sleeve 2 and the first narrowing 2a can be threaded on the outer wall of the guide post 1 and can slide back and forth along the axial direction of the guide post 1. The first sleeve 2 and the first narrowing portion 2a are of an integral structure.
The length of the guide post 1 is larger than that of the first sleeve 2. After the first sleeve 2 is sleeved on the guide post 1, the upper end of the guide post 1 extends out of the upper end of the first sleeve 2, so that a doctor can draw out the guide post 1.
The second sleeve 3 is inserted and sleeved outside the first sleeve 2, and a second conical narrowing part 3a which is coaxially distributed is arranged at the lower end part of the second sleeve 3. The inner wall of the second sleeve 3 is coaxial with the second sleeve 3 and axially penetrates through the second sleeve 3 and the second narrowing portion 3 a. The horizontal section of the inner cylinder wall of the second sleeve 3 is circular and the diameter is slightly larger than that of the first sleeve 2. So that the second sleeve 3 and the second narrowing 3a can be threaded on the outer wall of the first sleeve 2 and can slide back and forth axially along the first sleeve 2. The second sleeve 3 and the second narrowing 3a are of an integral structure.
The length of the first sleeve 2 is greater than the length of the second sleeve 3. So that the upper end of the first sleeve 2 extends beyond the upper end of the second sleeve 3 after the second sleeve 3 is fitted over the first sleeve 2, so that the physician can withdraw the first sleeve 2 from the second sleeve 3.
A third sleeve 4 is inserted and sleeved outside the second sleeve 3, and a third conical narrowing part 4a which is coaxially distributed is arranged at the lower end part of the third sleeve 4. The inner wall of the third sleeve 4 and the third sleeve 4 are coaxially distributed and axially penetrate through the third sleeve 4 and the third narrowing portion 4 a. The horizontal section of the inner cylinder wall of the third sleeve 4 is circular, and the diameter of the inner cylinder wall of the third sleeve 4 is slightly larger than that of the second sleeve 3. So that the third sleeve 4 and the third narrowing 4a can be threaded over the outer wall of the second sleeve 3 and can slide axially back and forth along the second sleeve 3. The third sleeve 4 and the third narrowing portion 4a are of an integral structure.
The length of the second sleeve 3 is greater than the length of the third sleeve 4. After the third sleeve 4 is sleeved on the second sleeve 3, the upper end of the second sleeve 3 extends out of the upper end of the third sleeve 4, so that the doctor can withdraw the second sleeve 3 from the third sleeve 4.
A fourth sleeve 5 is inserted and sleeved outside the third sleeve 4, and a conical fourth narrowing part 5a is coaxially distributed at the lower end part of the fourth sleeve 5. The inner wall of the fourth sleeve 5 and the fourth sleeve 5 are coaxially distributed and axially penetrate through the fourth sleeve 5 and the fourth narrowing portion 5 a. The horizontal section of the inner cylinder wall of the fourth sleeve 5 is circular, and the diameter of the inner cylinder wall of the fourth sleeve 5 is slightly larger than that of the third sleeve 4. So that the fourth sleeve 5 and the fourth narrowing 5a can be threaded on the outer wall of the third sleeve 4 and can slide back and forth along the axial direction of the third sleeve 4.
A group of triangular sharp teeth 5b are uniformly distributed on the lower end part of the fourth narrowing part 5 a. A pair of horizontally distributed fins 6 are arranged at the upper end part of the fourth sleeve 5. A reinforcing rib 7 is arranged between each wing 6 and the outer wall of the fourth sleeve 5. The reinforcing rib 7 is of a right-angled triangle structure, hooks of the reinforcing rib 7 are fixedly welded with the fins 6, strands of the reinforcing rib 7 are fixedly welded with the outer wall of the fourth sleeve 5, and the string of the reinforcing rib 7 is an inwards concave arc 7 a. The fourth sleeve 5, the fourth narrowing portion 5a and the sharp teeth 5b are of an integral structure.
The length of the third sleeve 4 is greater than the length of the fourth sleeve 5. After the fourth sleeve 5 is sleeved on the third sleeve 4, the upper end part of the third sleeve 4 extends out of the upper end of the fourth sleeve 5, so that the doctor can draw out the third sleeve 4 from the fourth sleeve 5.
The use process comprises the following steps:
during operation, firstly, a trocar in the prior art is used for puncturing the body of a patient, so that a needle core reaches the vertebral pedicle, a sleeve is also inserted into the body together, then the needle core is extracted, then a guide wire is inserted into the body of the patient from one end of the sleeve, the guide wire is inserted into the vertebral pedicle, the operation position is marked, and finally the sleeve is removed. The trocar comprises a needle core and a sleeve which is sleeved outside the needle core, and the structure of the trocar is not described in detail since the trocar is the prior art.
The skin opening left by the removal cannula is then flared using a prior art surgical mouth gag. Then insert the guide wire upper end from the central through-hole of guide pillar for the guide pillar is worn on the guide wire, and then insert the constriction part downwards in the patient body, until the constriction part lower extreme reaches the pedicle of vertebral arch, and then wear the cover in first, two, three, four sleeves step by step outside the guide pillar, make the lower extreme of first, two, three, four constriction parts all reach the pedicle of vertebral arch. (the first, second, third, and fourth tapered portions of the cone shape also facilitate insertion into the skin and into the patient)
Because the diameters of the first sleeve, the second sleeve, the third sleeve and the fourth sleeve are gradually increased, the soft tissues of the body are expanded by gradually penetrating the first sleeve, the second sleeve, the third sleeve and the fourth sleeve. After the lower end of the fourth narrowed part reaches the pedicle of vertebral arch, the fourth sleeve is held by hand, and the tiger mouth part is contacted with the strings of the arc-shaped reinforcing ribs 7, so that the fourth sleeve is tightly held. And then a hammer is used for knocking the wing panel to drive the sharp teeth at the lower end part of the fourth narrowed part into the bone of the vertebral pedicle.
Then the guide wire, the guide pillar, the first sleeve, the second sleeve and the third sleeve are gradually drawn out from inside to outside, then the pedicle screw with the screw rod in a solid state is inserted into the inner cylinder wall of the fourth sleeve, at the moment, the pedicle screw can directly fall to an operation position under the guidance of the inner cylinder wall of the fourth sleeve, and then the pedicle screw with the screw rod in the solid state is screwed into the pedicle screw through a special tool.
Through this technical scheme for the pedicle of vertebral arch screw that the screw pole is solid state can apply to among the minimal access surgery, because this application provides the operation passageway that the accuracy reachd the operation position for the pedicle of vertebral arch screw of solid state for the screw pole. Because the pedicle screw with the screw rod in a solid state has higher strength, the fracture of the screw body can be realized, the operative wound of a patient is reduced, and the operative complications are reduced, so that the quick recovery speed of the operation is greatly improved.
The guiding of the inner cylinder wall of the fourth sleeve also avoids the situation that the pedicle screws are screwed askew in the operation, greatly improves the success rate of the pedicle screw implantation, shortens the operation time, reduces the operation difficulty of doctors, and improves the operation success rate.
Claims (3)
1. A device for percutaneous minimally invasive pedicle screw implantation is characterized in that: it includes guide pillar (1), be equipped with central through-hole (1 a) on guide pillar (1), the cover is equipped with first sleeve (2) on guide pillar (1), the cover is equipped with second sleeve (3) on first sleeve (2), the cover is equipped with third sleeve (4) on second sleeve (3), the cover is equipped with fourth sleeve (5) on third sleeve (4), the tip is equipped with a pair of fin (6) on fourth sleeve (5), be equipped with a set of sharp tooth (5 b) at fourth sleeve (5) lower extreme tip.
2. A device for percutaneous minimally invasive pedicle screw placement according to claim 1, wherein: the lower end of the guide post (1) is provided with a conical narrowing part (1 b), the lower end of the first sleeve (2) is provided with a first narrowing part (2 a), the lower end of the second sleeve (3) is provided with a second narrowing part (3 a), the lower end of the third sleeve (4) is provided with a third narrowing part (4 a), and the lower end of the fourth sleeve (5) is provided with a fourth narrowing part (5 a).
3. A device for percutaneous minimally invasive pedicle screw placement according to claim 1, wherein: and a reinforcing rib (7) is also arranged between the fin (6) and the fourth sleeve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391477.1U CN210931756U (en) | 2019-08-26 | 2019-08-26 | Be used for percutaneous wicresoft's pedicle of vertebral arch screw to put into device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921391477.1U CN210931756U (en) | 2019-08-26 | 2019-08-26 | Be used for percutaneous wicresoft's pedicle of vertebral arch screw to put into device |
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| Publication Number | Publication Date |
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| CN210931756U true CN210931756U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921391477.1U Active CN210931756U (en) | 2019-08-26 | 2019-08-26 | Be used for percutaneous wicresoft's pedicle of vertebral arch screw to put into device |
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| CN (1) | CN210931756U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432967A (en) * | 2019-08-26 | 2019-11-12 | 牛国旗 | One kind being used for minimal invasion pedicle screw embedded device |
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2019
- 2019-08-26 CN CN201921391477.1U patent/CN210931756U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110432967A (en) * | 2019-08-26 | 2019-11-12 | 牛国旗 | One kind being used for minimal invasion pedicle screw embedded device |
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