CN209236362U - A kind of vertebral column minimally invasive nail tail, which fractures, fights spanner - Google Patents
A kind of vertebral column minimally invasive nail tail, which fractures, fights spanner Download PDFInfo
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- CN209236362U CN209236362U CN201821511267.7U CN201821511267U CN209236362U CN 209236362 U CN209236362 U CN 209236362U CN 201821511267 U CN201821511267 U CN 201821511267U CN 209236362 U CN209236362 U CN 209236362U
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Abstract
The utility model relates to medical instruments fields, and in particular to a kind of vertebral column minimally invasive nail tail, which fractures, fights spanner.A kind of vertebral column minimally invasive nail tail, which fractures, fights spanner, including confrontation set, connecting rod and handle, described connecting rod one end connects with handle, and the other end of the connecting rod is connect with the top middle portion covered is fought.It is connect by setting connecting rod with the middle part on the top of confrontation set, in compared to the prior art, the extension that connecting rod extends with confrontation set side is attached, the connection type of the application eliminates the setting of extension, greatly reduce the volume of confrontation set, operative incision is reduced, it can be achieved that Minimally Invasive Surgery.It solves nail tail in the prior art and fractures and fight the problem of spanner increases operative incision, is unfavorable for Minimally Invasive Surgery.
Description
Technical field
The utility model relates to medical instruments fields, and in particular to a kind of vertebral column minimally invasive nail tail, which fractures, fights spanner.
Background technique
In recent years, as surgical instrument constantly updates, calculates in the emergence and art of advanced medical imaging equipment
The application of machine assisting navigation, minimal invasive techniques have developed rapidly in spinal surgery.Minimally Invasive Surgery reduces operating time, reduces complication
Disease incidence, mitigate tissue damage and bleeding in art, shorten patient recovery times, mitigate surgical pain, keep notch beautiful, shorten
In hospital and rehabilitation duration, reduction drug use the economic cost with hospital costs.With the development of science and technology, vertebral column minimally invasive technology will
As a part of conventional surgical techniques, become a main trend of internal fixation of spine technology development.
Spine nail stick internal fixation system is a kind of highly developed spinal surgery hand in terms for the treatment of spinal injury and disease
Art has been widely used and has carried out the reset and fixation of bone.Usually the fasteners such as pedicle screw, hook are implanted into and are consolidated with centrum
It is fixed, it is connected, then fixed with holding screw, is played a supporting role by pitman.After locking pedicle screw, need to use
Fracturer fractures pedicle screw lifting part.
It is usually fractureed in the prior art using nail tail and fights spanner to cooperate fracturer that the nail tail of pedicle screw fractures.
Current nail tail fractures, and to fight spanner as shown in Fig. 1, and nail tail, which fractures, fights spanner 1 ' by confrontation set 11 ', connecting rod 12 ' and hand
Handle 13 ' forms.Annularly, pedicle screw 2 ' includes rivet nut 21 ', ailhead 22 ' and the nail extended from ailhead 22 ' to confrontation set 11 '
Tail 23 ', the nail tail 23 ' that confrontation set 11 ' may pass through pedicle screw 2 ' cover on ailhead 22 ', and the side of confrontation set 11 ' is radially prolonged
Stretching has extension, and one end of connecting rod 12 ' is fixedly connected with handle 13 ', the other end of connecting rod 12 ' and prolonging for confrontation set 11 '
Extending portion connection, i.e. connecting rod 12 ' so increase confrontation set from the side connection handle 13 ' and confrontation set 11 ' of confrontation set 11 '
The overall volume of 11 ' parts.When being used for minimally invasive spine surgical, the nail tail of the prior art fractures to fight spanner and can expand operation and cut
Mouthful, it is unfavorable for performing the operation.
Utility model content
It fractures to solve nail tail in the prior art and fights spanner and increase operative incision, be unfavorable for asking for Minimally Invasive Surgery
Topic fractures the utility model proposes a kind of vertebral column minimally invasive nail tail and fights spanner, solves above-mentioned technical problem.The utility model
Technical solution is as follows:
A kind of vertebral column minimally invasive nail tail, which fractures, fights spanner, including confrontation set, connecting rod and handle, described connecting rod one end with
The other end of handle connection, the connecting rod is connect with the top middle portion of confrontation set.
Connect by setting connecting rod with the middle part on top of confrontation set, compared to the prior art in, connecting rod with fight
The extension that set side extends is attached, and the connection type of the application eliminates the setting of extension, greatly reduces confrontation
The volume of set reduces operative incision, it can be achieved that Minimally Invasive Surgery.
Further, the confrontation set is in the tubular of both ends open, and the top port of the confrontation set is provided with radial connect
The interconnecting piece of go side mouthful, the connecting rod are connect with the middle part of the interconnecting piece.
Further, the top end opening of confrontation set is divided into symmetrical the first opening and the second opening by interconnecting piece, and described the
The shape of one opening and the second opening respectively with the nail tail of pedicle screw is adapted.
Further, the shape of the ailhead of the inner surface configuration and pedicle screw of the confrontation set is adapted, described right
The internal diameter of the top end opening of anti-set is greater than the internal diameter of bottom end opening, when the confrontation set is being followed closely across the nail tail sleeve of pedicle screw
When on head, the top end face of the confrontation set and the top end face of the ailhead.
Further, the confrontation set and the ailhead clearance fit.
Further, the bottom end of the confrontation set is provided with the notch being adapted with the connector of pedicle screw.
Further, the axis of the connecting rod is parallel to the axis of the confrontation set.
Further, the axis collinear of the axis of the connecting rod and the confrontation set.
Based on the above-mentioned technical proposal, technical effect achieved by the utility model are as follows:
1. the vertebral column minimally invasive nail tail of the utility model, which fractures, fights spanner, vertebra is can effectively protect by setting confrontation nested structure
When the nail tail of pedicle screw fractures, tail outward bending is only followed closely, ailhead is unaffected, and the U-type groove spacing on ailhead will not become
Greatly, it not will cause screw loosening；
2. the vertebral column minimally invasive nail tail of the utility model, which fractures, fights spanner, pass through the top of setting connecting rod and confrontation set
Middle part connection, compared to the prior art in, connecting rod and confrontation set side extension extension be attached, the connection of the application
Mode eliminates the setting of extension, greatly reduces the volume of confrontation set, reduces operative incision, it can be achieved that Minimally Invasive Surgery；
It is in the cylinder of both ends open by setting confrontation set 3. the vertebral column minimally invasive nail tail of the utility model, which fractures, fights spanner
The ailhead shape of shape, the shape and pedicle screw of fighting the inner surface of set is adapted, and confrontation may make to cover on ailhead；And
Interconnecting piece is set on the top of confrontation set, and interconnecting piece is the top port of radial communication confrontation set, then interconnecting piece is by top
The center of circle of port, in this way, the upper surface in the top port range of confrontation set of setting connecting rod and interconnecting piece connects,
Connecting rod is connected without covering setting extension to confrontation, and then effectively reduces the volume of confrontation set；
4. the vertebral column minimally invasive nail tail of the utility model fractures and fights spanner, by interconnecting piece will confrontation set top end opening every
At symmetrical the first opening and the second opening, shape of the first opening and the second opening respectively with the nail tail of pedicle screw is mutually fitted
It answers, in this way, confrontation set may pass through nail hood on ailhead；When the confrontation covers the nail tail sleeve across pedicle screw on ailhead
When, fight the top end face of set and the top end face of ailhead, so fracture follow closely tail when, confrontation covers and is playing protection ailhead
Under the premise of unaffected, fractureing for nail tail is not interfered with also.
Detailed description of the invention
Fig. 1 fractures for nail tail in the prior art and fights the usage state diagram of spanner；
Fig. 2 fractures for the vertebral column minimally invasive nail tail of the utility model and fights the structural schematic diagram of spanner；
Fig. 3 is the portion the A enlarged drawing of Fig. 2；
Fig. 4 is the front view of the confrontation set of the utility model；
Fig. 5 is the Section A-A figure of Fig. 4；
Fig. 6 is the left view of the confrontation set of the utility model；
Fig. 7 is the section B-B figure of Fig. 6；
Fig. 8 fractures for the vertebral column minimally invasive nail tail of the utility model and fights the usage state diagram of spanner；
In figure: 1- fights spanner；11- confrontation set；111- interconnecting piece；1111- connecting hole；112- first is open；113-
Two openings；114- notch；12- connecting rod；13- handle；2- pedicle screw；21- rivet nut；22- ailhead；23- follows closely tail；231- draws
Guide card；3- connector；1 '-confrontation spanner；11 '-confrontation sets；12 '-connecting rods；13 '-handles；2 '-pedicle screws；21 '-nails
Body；22 '-ailheads；23 '-nail tails.
Specific embodiment
The content of the utility model is further described with reference to the accompanying drawings of the specification.
As illustrated in figs. 2 through 8, it present embodiments provides a kind of vertebral column minimally invasive nail tail and fractures and fight spanner, including confrontation set 11,
Connecting rod 12 and handle 13,12 one end of connecting rod are connect with handle 13, and the other end of connecting rod 12 is connect with confrontation set 11, are connected
Top connection confrontation set 11 and handle 13 of the bar 12 from confrontation set 11.
Confrontation set 11 is in the tubular of both ends open, and one end that confrontation set 11 is connect with connecting rod 12 is top, confrontation set 11
The internal diameter of top end opening is greater than the internal diameter of the bottom end opening of confrontation set 11, the inner surface of confrontation set 11 and the nail of pedicle screw 2
The shape of first 22 outside is adapted.Preferably, the upper end of confrontation set 11 is hollow cylindrical, and the lower end of confrontation set 11 is hollow
Round table-like, the outer diameter of the round table-like lower end of confrontation set 11 is gradually reduced from top to bottom.It is provided at the top end opening of confrontation set 11
Interconnecting piece 111, it is preferable that interconnecting piece 111 is rectangular link block, and the radial communication confrontation of interconnecting piece 111 covers 11 top end opening,
I.e. the both ends of interconnecting piece 111 are connect with the top of confrontation set 11 respectively, and the extending direction of interconnecting piece 111 passes through the circle of top end opening
The heart.It is further preferred that interconnecting piece 111 protrudes from the top of confrontation set 11, specifically, the upper surface of interconnecting piece 111 is higher by pair
The top end face of the top of anti-set 11, the lower surface of interconnecting piece 111 and confrontation set 11 is in the same plane.Preferably, confrontation set 11
It is integrally formed with interconnecting piece 111.Connecting rod 12 is fixedly connected by interconnecting piece 111 with confrontation set 11, specifically, interconnecting piece 111
On be provided with connecting hole 1111, connecting rod 12 protrudes into connecting hole 1111 and is fixedly connected with interconnecting piece 111.Preferably, connecting hole 1111
Position without departing from confrontation set 11 top end face circumference range；It is further preferred that connecting hole 1111 can be located at interconnecting piece
111 middle part, connecting hole 1111 may be additionally located at the center of interconnecting piece 111.
The top end opening of confrontation set 11 is divided into symmetrically arranged first opening 112 and the second opening 113 by interconnecting piece 111,
The shape of the nail tail 23 of first opening 112 and the second opening 113 and pedicle screw 2 is adapted, and nail tail 23 can be from the first opening
112 and second opening 113 in stretch out.The bottom end of interconnecting piece 111 is provided with the notch being adapted with the connector 3 of pedicle screw 2
114.Preferably, notch 114 is two, the lines of centres of two notches 114 and interconnecting piece 111 to radially extend direction parallel.
Connecting rod 12 is cylindrical, and the axis of connecting rod 12 is parallel or conllinear with the axis of confrontation set；Handle 13 with connect
Bar 12 is fixedly connected, the axis of handle 13 and the axis collinear of connecting rod 12.
When needs, which fracture, follows closely tail, the confrontation for fighting spanner 1 is covered 11 sets on pedicle screw 2, pedicle screw 2 wraps
It includes rivet nut 21, ailhead 22 and nail tail 23, the top of rivet nut 21 to extend into corpus vertebrae, the tail end of rivet nut 21 is connected with nail
First 22, ailhead 22 is provided with nail tail 23 far from one end of rivet nut 21.Screw thread is provided in rivet nut 21, ailhead 22 is hollow structure,
One end that ailhead 22 is connect with nail tail 23 is provided with U-type groove, after facilitating connector 3 to extend into the inside of ailhead 22, passes through fixed spiral shell
Pedicle screw 2 is fixedly connected by nail with connector 3.It is axially extending on ailhead 22 to have nail tail 23 using U-type groove as boundary, follow closely tail 23
Including two symmetrically arranged guide plates 231, the outer surface of 231 joint of ailhead 22 and guide plate is provided with wedge groove, facilitates folding
Disconnected guide plate 231.
Preferably, the confrontation set 11 for fighting spanner 1 covers on ailhead 22, fights and matches between spanner 1 and ailhead 22 for gap
It closes, fights outer diameter 2mm of the internal diameter than corresponding ailhead 22 of set 11.When confrontation set 11 covers on ailhead 22, confrontation set
11 top end face and the top end face of ailhead 22.The top end face of confrontation set 11 and the top end face of ailhead, then
On the one hand, ailhead 22 can be completely disposed to the inside of confrontation set 11；On the other hand the guide plate 231 of nail tail 23 is not interfered with
It fractures.
Based on above structure, the vertebral column minimally invasive nail tail of the utility model, which fractures, fights the application method of spanner are as follows: completes vertebra
After the positioning and fastening of pedicle screw, the confrontation set 11 for fighting spanner 1 is passed through to the nail tail 23 of pedicle screw 1, confrontation set 11
It covers on the ailhead 22 of pedicle screw 1, two guide plates 231 for following closely tail 23 is fractureed along wedge groove using fracturer.
The embodiments of the present invention is explained in detail above in conjunction with attached drawing, but the utility model is not limited to
Above embodiment can also not depart from the utility model within the knowledge of a person skilled in the art
Objective under the premise of make a variety of changes.
Claims (8)
1. a kind of vertebral column minimally invasive nail tail, which fractures, fights spanner, including confrontation set (11), connecting rod (12) and handle (13), feature
It is, described connecting rod (12) one end is connect with handle (13), the other end of the connecting rod (12) and the top of confrontation set (11)
The connection of end middle part.
2. a kind of vertebral column minimally invasive nail tail as described in claim 1, which fractures, fights spanner, which is characterized in that the confrontation covers (11)
In the tubular of both ends open, the top end opening of the confrontation set (11) is provided with the interconnecting piece (111) of radial communication, the connection
Bar (12) is connect with the middle part of the interconnecting piece (111).
3. a kind of vertebral column minimally invasive nail tail as claimed in claim 2, which fractures, fights spanner, which is characterized in that interconnecting piece (111) will
The top end opening of confrontation set (11) is divided into symmetrical first opening (112) and the second opening (113), first opening (112)
It is adapted respectively with the shape of the nail tail (23) of pedicle screw (2) with the second opening (113).
4. a kind of vertebral column minimally invasive nail tail as claimed in claim 3, which fractures, fights spanner, which is characterized in that the confrontation covers (11)
Inner surface configuration and the shape of ailhead (22) of pedicle screw (2) be adapted, the top end opening of the confrontation set (11)
Internal diameter is greater than the internal diameter of bottom end opening, when the nail tail (23) that the confrontation set (11) passes through pedicle screw (2) is covered in ailhead
(22) when on, the top end face of the confrontation set (11) and the top end face of the ailhead (22).
5. a kind of vertebral column minimally invasive nail tail as claimed in claim 4, which fractures, fights spanner, which is characterized in that the confrontation covers (11)
With the ailhead (22) clearance fit.
6. a kind of vertebral column minimally invasive nail tail as claimed in claim 2, which fractures, fights spanner, which is characterized in that the confrontation covers (11)
Bottom end be provided with the connector (3) of pedicle screw (2) be adapted notch (114).
7. fighting spanner as a kind of described in any item vertebral column minimally invasive nail tails of claim 2-6 fracture, which is characterized in that the company
The axis of extension bar (12) is parallel to the axis of the confrontation set (11).
8. fighting spanner as a kind of described in any item vertebral column minimally invasive nail tails of claim 2-6 fracture, which is characterized in that the company
The axis collinear of the axis of extension bar (12) and the confrontation set (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821511267.7U CN209236362U (en) | 2018-09-14 | 2018-09-14 | A kind of vertebral column minimally invasive nail tail, which fractures, fights spanner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821511267.7U CN209236362U (en) | 2018-09-14 | 2018-09-14 | A kind of vertebral column minimally invasive nail tail, which fractures, fights spanner |
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| Publication Number | Publication Date |
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| CN209236362U true CN209236362U (en) | 2019-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821511267.7U Active CN209236362U (en) | 2018-09-14 | 2018-09-14 | A kind of vertebral column minimally invasive nail tail, which fractures, fights spanner |
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| CN (1) | CN209236362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110652353A (en) * | 2019-11-01 | 2020-01-07 | 迪恩医疗科技有限公司 | Tightening counterspanner |
-
2018
- 2018-09-14 CN CN201821511267.7U patent/CN209236362U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110652353A (en) * | 2019-11-01 | 2020-01-07 | 迪恩医疗科技有限公司 | Tightening counterspanner |
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