CN207101349U - Backbone correcting fixed system - Google Patents
Backbone correcting fixed system Download PDFInfo
- Publication number
- CN207101349U CN207101349U CN201720190152.1U CN201720190152U CN207101349U CN 207101349 U CN207101349 U CN 207101349U CN 201720190152 U CN201720190152 U CN 201720190152U CN 207101349 U CN207101349 U CN 207101349U
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- CN
- China
- Prior art keywords
- type groove
- connecting rod
- hole
- pedicle nail
- mounting seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model belongs to technical field of medical instruments, a kind of backbone correcting fixed system, including mounting seat, pedicle nail and connecting rod, U-type groove is offered in mounting seat, U-type groove bottom wall is provided with the through hole of insertion mounting seat, and pedicle nail passes through through hole, its head is located in through hole, through hole upper end is provided with annular groove, and snap ring is provided with annular groove, and snap ring is located at the top of pedicle nail；U-type groove sidewall upper has screw thread, some mounting seats are together in series by the U-type groove that connecting rod is sequentially passed through in some mounting seats, compressing member is arranged in U-type groove by screw thread, and connecting rod is pressed in U-type groove, U-type groove upper end outer cover is provided with clamping sleeve, compression is placed on to be interference fitted between U-type groove side wall, and clamping sleeve top is provided with the protruding end being pressed on compressing member.It can effectively prevent pedicle nail from separating, slipping with mounting seat using snap ring in the application, it is convenient to operate and fix, while mounting seat is held tightly with clamping sleeve and compresses compressing member.
Description
Technical field
The utility model belongs to technical field of medical instruments, more particularly to a kind of backbone correcting fixed system.
Background technology
Earliest and domestic application extensive orthopaedics therapy technology is proposed during Via Posterior Spinal Approach internal fixation operation, conventional is interior solid
Determine system to be mainly made up of mounting seat, pedicle nail and connecting rod, pedicle nail will be fixed through mounting seat with vertebra, even
Extension bar is used to be connected in series several mounting seats, and then fixed effect.But pedicle nail of the prior art holds
Easily slipped from mounting seat, be unfavorable for installing, fixed and structure stability, for connecting rod to be pressed in mounting seat
Compressing member is typically that screw thread is screwed in mounting seat, and the compressing member also easily releases from mounting seat after a long time use, unfavorable
In the integrally-built stability of fixed system.
Utility model content
To solve to bore the defects of nut nail easily slips from mounting seat existing for prior art, the utility model provides one
Kind backbone correcting fixed system.
In order to solve the above technical problems, technological means is used by the utility model：A kind of backbone correcting fixed system,
Including mounting seat, pedicle nail and connecting rod, U-type groove is offered in the mounting seat, the U-type groove bottom wall is provided with insertion institute
The through hole of mounting seat is stated, described pedicle nail passes through the through hole, and its head is located in the through hole, and the through hole upper end is set
Annular groove is equipped with, snap ring is provided with the annular groove, the snap ring is located at the top of the pedicle nail；In the U-type groove side wall
End has screw thread, and some mounting seats are together in series by the U-type groove that the connecting rod is sequentially passed through in some mounting seats, and compressing member leads to
Cross screw thread to be arranged in U-type groove, and the connecting rod is pressed in the U-type groove, U-type groove upper end outer cover is provided with pressure
Tight set, it is interference fit between the clamping sleeve and the U-type groove side wall, the clamping sleeve top, which is provided with, is pressed on the pressure
Protruding end on tight part.
Preferably, described compressing member upper end has interior hexagonal counterbore, compressing member upper surface outer rim also has ring
Shape step, when compressing member is screwed again in the U-type groove, the protruding end described in bending on clamping sleeve, make the protruding end against
On the ring-shaped step.Conveniently compressing member can be screwed in U-type groove using instrument, while utilized convex using interior hexagonal counterbore
Going out end effectively can be pressed on compressing member in U-type groove, prevent it from releasing.
Further, connected between the two neighboring connecting rod by connector, the connector is included respectively at two
The first connection sheet and the second connection sheet of individual connecting rod connection, are provided with strip hole in first connection sheet, and described the
Screw is provided with two connection sheets, bolt is threadedly coupled through the strip hole in the screw.Can be effective using connector
Two connecting rods are connected, while can be according to the length of the distance between two connecting rods adjusting connector using strip hole
Degree.
Preferably, the first described connection sheet is provided with hook with the second connection sheet in one end that the connecting rod connects
Type connector, described hook connector one end are provided with caging bolt, and the connecting rod is passed through after the hook connector with limit
Position bolt is limited in the hook connector.It is connected with connecting rod using hook connector, and is carried out with caging bolt
It is spacing, it can prevent connecting rod from separating, slipping with connector.
Preferably, the head globulate of described pedicle nail, its upper end has interior hexagonal endoporus, described through hole bottom
Portion matches with the pedicle nail head shape.Pedicle nail head is arranged to spherical, can be within the specific limits
Any regulation screws in the angle of backbone.
Preferably, for avoid snap ring hinder pedicle nail screw in backbone angle, described snap ring inwall bottom into
The cambered surface of the pedicle nail fit heads.
Beneficial effect：It can effectively prevent pedicle nail from separating, slipping with mounting seat using snap ring in the application, convenient behaviour
Make and fixed, while holding mounting seat and compression compressing member tightly with clamping sleeve prevents compressing member from connecting caused by being slipped out of U-type groove
Extension bar and mounting seat depart from, the problem of causing backbone correcting fixed system to fail so that fixed system overall structure is more stable.
Brief description of the drawings
Fig. 1 is backbone correcting fixed system dimensional structure diagram；
Fig. 2 is pedicle nail, mounting seat, snap ring, compressing member and clamping sleeve mounting structure schematic diagram；
Fig. 3 is pedicle nail, mounting seat, snap ring, connecting rod, compressing member and clamping sleeve mounting structure longitudinal section；
1. mounting seat in figure, 11.U type grooves, 2. pedicle nails, 3. connecting rods, 4. compressing members, 5. clamping sleeves, 51. protrusions
End, 6. first connection sheets, 61. strip holes, 7. second connection sheets, 8. connectors, 81. caging bolts, 9. snap rings.
Embodiment
Embodiment
As shown in Figures 1 to 3, a kind of backbone correcting fixed system, including mounting seat 1, pedicle nail 2 and connecting rod 3, it is described
U-type groove 11 is offered in mounting seat 1, the bottom wall of U-type groove 11 is provided with the through hole for penetrating the mounting seat 1, described vertebral arch
Root nail 2 passes through the through hole, and its head is located in the through hole, and the head globulate of described pedicle nail 2, its upper end has
Interior hexagonal endoporus, described via bottoms match with the head shape of pedicle nail 2, and the through hole upper end is provided with ring
Groove, snap ring 9 is provided with the annular groove, the snap ring 9 is located at the top of the pedicle nail 2, the described inwall bottom of snap ring 9
Portion is into the cambered surface with the fit heads of pedicle nail 2.
The sidewall upper of U-type groove 11 has screw thread, and the connecting rod 3 sequentially passes through the U-type groove 11 in some mounting seats 1
Some mounting seats 1 are together in series, compressing member 4 is arranged in U-type groove 11 by screw thread, and the described upper end of compressing member 4 has interior
Hexagonal counterbore, the upper surface outer rim of compressing member 4 also has ring-shaped step, and the connecting rod 3 is pressed on into the U-type groove
In 11, the upper end outer cover of U-type groove 11 is provided with clamping sleeve 5, is interference between the clamping sleeve 5 and the side wall of the U-type groove 11
Coordinate, the top of clamping sleeve 5 is provided with the protruding end 51 being pressed on the compressing member 4, specifically, when compressing member 4 screws
When again in the U-type groove 11, the protruding end 51 described in bending on clamping sleeve 5, the protruding end 51 is set to be resisted against the annular table
On rank, and then compress compressing member 4.
Connected between the two neighboring connecting rod 3 by connector, the connector is included respectively at two companies
The first connection sheet 6 and the second connection sheet 7 that extension bar 3 connects, are provided with strip hole 61 in first connection sheet 6, and described second
Screw is provided with connection sheet 7, bolt is threadedly coupled through the strip hole 61 in the screw.The first described connection sheet 6
Hook connector 8 is provided with one end that the connecting rod 3 connects with the second connection sheet 7, described one end of hook connector 8 is set
It is equipped with caging bolt 81, the connecting rod 3 passes through and is limited in the hook with caging bolt 81 after the hook connector 8
In connector 8.
Operation principle：During installation, first pedicle nail 2 is screwed into backbone, then some mounting seats 1 gone here and there to connecting rod 3
Pick up and, then screw on compressing member 4, and bending protruding end 51, make protruding end 51 against the ring-shaped step for being pressed on compressing member 4
On, then connected between two neighboring connecting rod 3 by connection sheet, connecting rod 3 passes through hook connector 8, military service caging bolt
81 spacing fixations, and the relative position between the first connection sheet 6 and the second connection sheet 7 is adjusted, and fixed with bolt, it is final to cause
The mounting seat 1 and pedicle nail 2 of two row's connecting rods 3 series connection form stable backbone correcting fixed system.
Claims (6)
- A kind of 1. backbone correcting fixed system, it is characterised in that：Including mounting seat (1), pedicle nail (2) and connecting rod (3), institute To state and U-type groove (11) is offered in mounting seat (1), U-type groove (11) bottom wall is provided with the through hole for penetrating the mounting seat (1), Described pedicle nail (2) passes through the through hole, and its head is located in the through hole, and the through hole upper end is provided with annular groove, institute State and snap ring (9) is provided with annular groove, the snap ring (9) is located at the top of the pedicle nail (2)；U-type groove (11) side wall Upper end has screw thread, and the U-type groove (11) that the connecting rod (3) is sequentially passed through in some mounting seats (1) goes here and there some mounting seats (1) Connection gets up, and compressing member (4) is arranged in U-type groove (11) by screw thread, and the connecting rod (3) is pressed on into the U-type groove (11) in, U-type groove (11) upper end outer cover is provided with clamping sleeve (5), the clamping sleeve (5) and the U-type groove (11) side wall Between for interference fit, clamping sleeve (5) top is provided with the protruding end (51) being pressed on the compressing member (4).
- 2. backbone correcting fixed system according to claim 1, it is characterised in that：Described compressing member (4) upper end has Interior hexagonal counterbore, compressing member (4) upper surface outer rim also have ring-shaped step, when compressing member (4) screws again the U-type groove (11) when interior, the protruding end (51) on clamping sleeve described in bending (5), the protruding end (51) is made to be resisted against the ring-shaped step On.
- 3. backbone correcting fixed system according to claim 1, it is characterised in that：The two neighboring connecting rod (3) it Between connected by connector, the connector includes the first connection sheet (6) and the respectively at two connecting rods (3) connections Two connection sheets (7), strip hole (61) is provided with first connection sheet (6), spiral shell is provided with second connection sheet (7) Hole, bolt are threadedly coupled through the strip hole (61) in the screw.
- 4. backbone correcting fixed system according to claim 3, it is characterised in that：Described the first connection sheet (6) and Two connection sheets (7) are provided with hook connector (8), the hook connector (8) one in one end that the connecting rod (3) connects End is provided with caging bolt (81), and the connecting rod (3) is limited after passing through the hook connector (8) with caging bolt (81) System is in the hook connector (8).
- 5. backbone correcting fixed system according to claim 1, it is characterised in that：The head of described pedicle nail (2) Globulate, its upper end have interior hexagonal endoporus, and described via bottoms match with the pedicle nail (2) head shape.
- 6. backbone correcting fixed system according to claim 5, it is characterised in that：Described snap ring (9) inwall bottom into With the cambered surface of the pedicle nail (2) fit heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720190152.1U CN207101349U (en) | 2017-03-01 | 2017-03-01 | Backbone correcting fixed system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720190152.1U CN207101349U (en) | 2017-03-01 | 2017-03-01 | Backbone correcting fixed system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207101349U true CN207101349U (en) | 2018-03-16 |
Family
ID=61595632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720190152.1U Active CN207101349U (en) | 2017-03-01 | 2017-03-01 | Backbone correcting fixed system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207101349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725791A (en) * | 2017-03-01 | 2017-05-31 | 常州凯耀医疗器械有限公司 | Backbone correcting fixed system |
-
2017
- 2017-03-01 CN CN201720190152.1U patent/CN207101349U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106725791A (en) * | 2017-03-01 | 2017-05-31 | 常州凯耀医疗器械有限公司 | Backbone correcting fixed system |
| CN106725791B (en) * | 2017-03-01 | 2023-11-28 | 常州凯耀医疗器械有限公司 | Spinal orthopedic fixation system |
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