CN204106164U - A kind of micro-wound orthopedic apparatus - Google Patents
A kind of micro-wound orthopedic apparatus Download PDFInfo
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- CN204106164U CN204106164U CN201420515210.XU CN201420515210U CN204106164U CN 204106164 U CN204106164 U CN 204106164U CN 201420515210 U CN201420515210 U CN 201420515210U CN 204106164 U CN204106164 U CN 204106164U
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- pedicle screw
- clamping device
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- thread part
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Abstract
This utility model relates to a kind of micro-wound orthopedic apparatus, has pedicle screw clamping device and screw thread pressue device.One end of pedicle screw clamping device is clamping part, and the other end is grip part, and one end, grip part has internal thread part.Screw thread pressue device has external thread part.Wherein the internal thread part of pedicle screw clamping device and screw thread pressue device external thread part combine, and are pressed in pedicle screw by Orthopedic rod and lock.This utility model solves the defect needing to change pedicle screw clamping device because pedicle screw model is different, and pedicle screw clamping device of the present utility model has U-shaped big uncork, wears excellent position and easily finds, be convenient to doctor and wear excellent operation.
Description
Technical field
This utility model relates to a kind of micro-wound orthopedic apparatus, particularly relates to a kind of spinal column correction bar apparatus for placing, can be used for Via Posterior Spinal Approach Minimally Invasive Surgery.
Background technology
In Via Posterior Spinal Approach Minimally Invasive Surgery, restoring backbone is made by the mating reaction of pedicle screw and Orthopedic rod, pedicle screw is arranged on spinal column relevant position by usual employing pedicle screw clamping device, again Orthopedic rod is inserted in the U-lag of pedicle screw, by interior pinning, Orthopedic rod is fixed in the U-lag of pedicle screw, because the U-lag size of pedicle screw is limited, in Minimally Invasive Surgery, require that Orthopedic rod can directly be inserted in the U-lag of pedicle screw by doctor exactly, very high to the requirement of doctor, and operating difficulties.
In order to address this problem, partial monopoly discloses on pedicle screw clamping device, to offer an opening solve this technical problem, such as US Patent No. 2011/0040328A1 just discloses a kind of micro-wound orthopedic apparatus, this technology necessarily requires the female thread 17 of pedicle screw clamping device 1 to be positioned at the clamping part of pedicle screw clamping device 1, the female thread 17 of pedicle screw clamping device 1 forms a continuous print screw thread collection with the female thread 18 of pedicle screw 19, a kind of pedicle screw must coordinate a kind of pedicle screw clamping device to use, make poor universality, and if the female thread 17 of pedicle screw clamping device 1 is oversize, Orthopedic rod 11 is then installed need to spend the more time, if female thread 17 is too short, that then leaves that Orthopedic rod 11 penetrates the U-shaped opening of pedicle screw clamping device 1 for can will become too little by operative space.
Based on above-mentioned objective fact, a kind of in operation versatility micro-wound orthopedic apparatus that is good, convenient operation become this area problem demanding prompt solution.
Utility model content
The purpose of this utility model be to provide a kind of can in operation convenient operation, micro-wound orthopedic apparatus that versatility is good.
This utility model provides a kind of micro-wound orthopedic apparatus, it is characterized in that: have pedicle screw clamping device and screw thread pressue device.One end of pedicle screw clamping device is clamping part, and the other end is grip part, and clamping part extends a U-shaped big uncork to direction, grip part, and in order to pass Orthopedic rod, pedicle screw clamping device has internal thread part; Screw thread pressue device has external thread part; Wherein the internal thread part of pedicle screw clamping device and the external thread part of screw thread pressue device are worked in coordination, and are pressed in pedicle screw by Orthopedic rod and lock.
According to above-mentioned design, the opening size of the U-shaped big uncork of pedicle screw clamping device is greater than the U-lag opening size of pedicle screw.
According to above-mentioned design, the length of internal thread part and described external thread part designs like this, namely when the external thread part of screw thread pressue device just coordinates with the internal thread part of pedicle screw clamping device, the interior pinning being connected to screw thread pressue device lower end adjoins the upper end of the U-shaped big uncork of pedicle screw clamping device, when the external thread part of screw thread pressue device has just departed from the internal thread part of pedicle screw clamping device, internal lock pitch of nails also has a segment distance from the screw thread of the U-lag of pedicle screw.
According to above-mentioned design, this segment distance is 1mm.
According to above-mentioned design, bottom U-shaped big uncork, extension slot is set away from the direction of described clamping part.
According to above-mentioned design, the internal thread part of pedicle screw clamping device is positioned at the grip part end of pedicle screw clamping device.
According to above-mentioned design, internal thread part and external thread part are single thread or multi start thread.
The beneficial effects of the utility model comprise:
(1) in this utility model, external thread part is set on screw thread pressue device, matching with the internal thread part of pedicle screw clamping device or screw shell is incompatiblely pressed in the U-lag of pedicle screw by Orthopedic rod, solve the defect needing to change pedicle screw clamping device because pedicle screw model is different, improve the versatility of operating theater instruments;
(2) wear the U-shaped big uncork position of excellent position at pedicle screw clamping device 1, wear excellent location comparison and easily find, lower to surgical operation skill set requirements.
Accompanying drawing explanation
Fig. 1 a is the axonometric chart of pedicle screw clamping device of the present utility model;
Fig. 1 b is the front view of pedicle screw clamping device of the present utility model;
Fig. 2 a is the axonometric chart of another structure of pedicle screw clamping device of the present utility model;
Fig. 2 b is the front view of another structure of pedicle screw clamping device of the present utility model;
Fig. 3 is screw thread pressue device of the present utility model;
Fig. 4 is the schematic diagram of micro-wound orthopedic apparatus of the present utility model;
Fig. 5 is the structural representation that micro-wound orthopedic apparatus of the present utility model starts to place Orthopedic rod;
Fig. 6 is the intermediateness schematic diagram that Orthopedic rod placed by micro-wound orthopedic apparatus of the present utility model
Fig. 7 is the partial enlarged drawing that Orthopedic rod placed by micro-wound orthopedic apparatus of the present utility model;
Fig. 8 is the structural representation that micro-wound orthopedic apparatus of the present utility model completes Orthopedic rod placement;
Fig. 9 is the design sketch after this utility model micro-wound orthopedic apparatus completes.
Detailed description of the invention
The concrete structure of the micro-wound orthopedic apparatus involved by this utility model is described in detail below in conjunction with accompanying drawing.In this utility model, the various method and structure be well known to those skilled in the art is not being described in detail, in this utility model, have employed identical Reference numeral with the structure of prior art structure.
An embodiment of the present utility model, micro-wound orthopedic apparatus includes pedicle screw clamping device 1 (as shown in Fig. 1 a to 2b) and screw thread pressue device 7 (as shown in Figure 3).One end of described pedicle screw clamping device 1 is clamping part 3, and the other end is grip part 6, described clamping part 3 extends a U-shaped big uncork 4 to direction, grip part 6, the opening size of U-shaped big uncork 4 is greater than the opening size of the U-lag 20 of pedicle screw 19, so that doctor wears excellent position through being easy to find during Orthopedic rod 11.Also can arrange extension slot 5 (as shown in Fig. 2 a, 2b) according to practical operation situation on the direction of the bottom of shape U-shaped big uncork 4 away from clamping part 3, this extension slot 5 can be used as Orthopedic rod 11 through guiding groove during pedicle screw clamping device 1.Inside, grip part 6 has internal thread part 2, and this internal thread part 2 can in any position, the inside of grip part 6, preferably at the upper end position of grip part 6.Described screw thread pressue device 7 has operating portion 10, pressing device 8 and external thread part 9.Wherein the internal thread part 2 of pedicle screw clamping device 1 intermeshes with the external thread part 9 of screw thread pressue device 7, Orthopedic rod 11 pushes in the U-lag 20 of pedicle screw 19 and locks by rotating down pressing, the screw thread coordinating pressurization can be single thread, also can be multi start thread.
Described internal thread part 2 and the length of external thread part 9 design like this, namely when the external thread part 9 of screw thread pressue device 7 just coordinates with the internal thread part 2 of pedicle screw clamping device 1 (as shown in Figure 5), the interior pinning 16 being connected to screw thread pressue device 7 lower end adjoins the upper end of the U-shaped big uncork 4 of pedicle screw clamping device 1, when the external thread part 9 of screw thread pressue device 7 has just started to depart from the internal thread part 2 of pedicle screw clamping device 1 (as shown in Figure 6), the interior pinning 16 being connected to screw thread pressue device 7 lower end also has one section of small distance apart from the female thread 18 of the U-lag 20 of pedicle screw 19, this distance can be such as 1mm.
Introduce the work process of the micro-wound orthopedic apparatus of this embodiment of the present utility model below in conjunction with surgical operation step, there are following steps:
Step one: pedicle screw clamping device 1 clamps pedicle screw 19 and is driven in vertebral body by Pedicle of Vertebral Arch of Posterior Spine.
Step 2: use the device of clamping Orthopedic rod by Orthopedic rod 11 transdermal, be placed on the U-shaped big uncork position 4 of pedicle screw clamping device 1, as shown in Figure 4.
Step 3: use screw thread pressue device 7 to be pressed in the U-lag 20 of pedicle screw 19 by Orthopedic rod 11.The external screw thread 9 of screw thread pressue device 7 and the internal thread part 2 of pedicle screw clamping device 1 coordinate to be depressed Orthopedic rod 11, as shown in Figure 5,6.When the external screw thread 9 of screw thread pressue device 7 has just departed from the female thread of pedicle screw clamping device 12, the pinning 16 being positioned at the top of the pressing device 8 of screw thread pressue device 7 also has very little distance apart from the screw thread 18 of pedicle screw U-lag 20, the external screw thread of interior pinning 16 engages with the female thread 18 of pedicle screw U-lag 20 by now manual vertical pressurization, being coordinated by the external screw thread of interior pinning 16 and the female thread 18 of pedicle screw U-lag 20 is locked in pedicle screw U-lag 20 by Orthopedic rod 11 again, as shown in Figure 7,8.
Step 4: take out screw thread pressue device 7, the device clamping Orthopedic rod and pedicle screw clamping device 1, complete spinal orthopedic bar placement work, as shown in Figure 9.
According to above-mentioned known, pedicle screw clamping device 1 is utilized to clamp pedicle screw 19 in micro-wound orthopedic apparatus of the present utility model, wear the position of excellent position at pedicle screw clamping device 1U shape big uncork 4, the size of this position U-shaped big uncork 4 is greater than the opening size of the U-lag 20 of pedicle screw 19, not only realize wearing excellent location comparison thus easily to find, the object lower to surgical operation skill set requirements.Not directly through in the U-lag 20 of pedicle screw 19 owing to wearing excellent position, lock bottom the U-lag 20 that Orthopedic rod 11 is pressed into pedicle screw 19 by the mode that this utility model is coordinated by the internal thread part 14 of the external thread part 9 of screw thread pressue device 7 and the female thread 2 on pedicle screw clamping device 1 or screw shell 12.The screw thread of package unit does not need to match with the screw thread of pedicle screw 19, can be adapted to the pedicle screw 19 of different manufacturers different model, make device have good versatility.
The foregoing is only preferred embodiment of the present utility model, and be not used to limit claim of the present utility model, therefore under all other does not depart from the spirit that this utility model discloses, the equivalence that completes changes or modifies, and all should be contained in the claim of this case.
Claims (7)
1. a micro-wound orthopedic apparatus, is characterized in that:
There is pedicle screw clamping device and screw thread pressue device;
One end of described pedicle screw clamping device is clamping part, and the other end is grip part, and described clamping part extends a U-shaped big uncork to direction, grip part, and in order to pass Orthopedic rod, pedicle screw clamping device has internal thread part;
Described screw thread pressue device has external thread part; The described internal thread part of wherein said pedicle screw clamping device and the described external thread part of described screw thread pressue device are worked in coordination, and lock in described Orthopedic rod press-in pedicle screw.
2. micro-wound orthopedic apparatus as claimed in claim 1, is characterized in that: the opening size of the U-shaped big uncork of described pedicle screw clamping device is greater than the U-lag opening size of pedicle screw.
3. micro-wound orthopedic apparatus as claimed in claim 1, it is characterized in that, the length of described internal thread part and described external thread part designs like this, namely when the external thread part described in described screw thread pressue device just coordinates with the internal thread part described in described pedicle screw clamping device, the interior pinning being connected to described screw thread pressue device lower end adjoins the upper end of the described U-shaped big uncork of described pedicle screw clamping device, when the described external thread part of described screw thread pressue device has just departed from the described internal thread part of described pedicle screw clamping device, described internal lock pitch of nails also has a segment distance from the screw thread of described pedicle screw.
4. micro-wound orthopedic apparatus as claimed in claim 3, is characterized in that: a described segment distance is 1mm.
5. micro-wound orthopedic apparatus as claimed in claim 1, is characterized in that: the direction away from described clamping part bottom described U-shaped big uncork arranges extension slot.
6. micro-wound orthopedic apparatus as claimed in claim 1, is characterized in that: described internal thread part is positioned at the described grip part end of described pedicle screw clamping device.
7. the micro-wound orthopedic apparatus according to any one of claim 1-6, is characterized in that: described internal thread part and described external thread part are single thread or multi start thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515210.XU CN204106164U (en) | 2014-09-10 | 2014-09-10 | A kind of micro-wound orthopedic apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420515210.XU CN204106164U (en) | 2014-09-10 | 2014-09-10 | A kind of micro-wound orthopedic apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204106164U true CN204106164U (en) | 2015-01-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420515210.XU Active CN204106164U (en) | 2014-09-10 | 2014-09-10 | A kind of micro-wound orthopedic apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204106164U (en) |
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2014
- 2014-09-10 CN CN201420515210.XU patent/CN204106164U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Beijing naton medical science and Technology Research Institute Company Limited Assignor: TIBET DEKANG MEDICAL EQUIPMENT CO., LTD. Contract record no.: 2015990001053 Denomination of utility model: Minimally invasive orthopedic instrument Granted publication date: 20150121 License type: Common License Record date: 20151217 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model |