CN102784002B - Tibial intramedullary nail - Google Patents
Tibial intramedullary nail Download PDFInfo
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- CN102784002B CN102784002B CN201110155072.XA CN201110155072A CN102784002B CN 102784002 B CN102784002 B CN 102784002B CN 201110155072 A CN201110155072 A CN 201110155072A CN 102784002 B CN102784002 B CN 102784002B
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Abstract
The invention relates to a novel tibial intramedullary nail. The tibial intramedullary nail comprises a near end L1 (1) and a far end L2 (2) applicable to insertion into a medullary cavity, wherein the included angle alpha between the central line of the near end (1) and the longitudinal axis of the intramedullary nail is 18-22 degrees. The intramedullary nail takes the inner edge of a patellar tendon and an upper edge of a tibial jaw foot toe point as needle inserting points, so that damage to a patellar ligament is avoided and thus the anterior patellar pain after an operation is avoided.
Description
Technical field
The present invention relates to orthopedic fixation device tool, particularly relate to a kind of intramedullary pin.
Background technology
Tibial intramedullary nailing is used to the inner fixing device for the treatment of fracture of shaft of tibia, tibial intramedullary nailing is in the market all select through patellar ligament tibial tubercle upper limb approach inserting needle when implanting, cause patellar ligament and adjacent soft tissue damage, the aseptic inflammations such as tissue adhesion, this surgical technic shortcoming is pain before the obstinate kneecap of the postoperative appearance of patient.If patient's misoperation in addition, afterbody screw exceeds cortical bone, and Bin Jian surrounding soft tissue also can be stimulated to cause pain, has had a strong impact on the life quality of patient.
Summary of the invention
The present invention is directed to the deficiency of existing intramedullary pin, a kind of anterior-medial approach tibial intramedullary nailing is provided, by kneecap tendon inner edge and the tibia pes anserinus stop upper limb entry point as intramedullary pin, to avoid causing damage to patellar ligament during inserting needle, and then avoid the generation of pain before the postoperative kneecap of fracture of tibia patient.
The technical scheme solved the problems of the technologies described above is:
Tibial intramedullary nailing of the present invention, comprise the far-end L2 that a near-end L1, is applicable to be inserted in pulp cavity, the angle a between proximal hub line and intramedullary pin longitudinal axis is 18 °-22 °.
Preferably, the angle a between the proximal hub line of tibial intramedullary nailing of the present invention and intramedullary pin longitudinal axis is 20 °.
Preferably, have transition segmental arc between the near-end of tibial intramedullary nailing of the present invention and far-end, radius of curvature R 1 is 50mm.
Preferably, the far-end of tibial intramedullary nailing of the present invention comprises near the far-end epimere m of near-end and the far-end hypomere n away from near-end, and the angle b between the centrage of far-end epimere and the centrage of far-end hypomere is 0 °-4 °.
Preferably, have transition segmental arc between the far-end epimere m of tibial intramedullary nailing of the present invention and far-end hypomere n, radius of curvature R 2 is 1500mm.
Preferably, the near-end of tibial intramedullary nailing of the present invention also comprises at least one lock hole, described lock hole centrage and proximal hub line intramedullary pin near-end and distal center line angle c be on the whole 80 °.
Preferably, the near-end of tibial intramedullary nailing of the present invention also comprises at least one pressurization hole, and described pressurization centerline hole is 30 ° at the angle d with intramedullary pin near-end and face, distal center line place.
Preferably, the far-end of tibial intramedullary nailing of the present invention comprises at least 2 lock holes, and angle e and the f sum in the projection on the cross section of intramedullary pin of the centrage in described 2 far-end locking holes and near-end and face, distal center line place are greater than 0 °, are less than or equal to 90 °.
Anterior-medial approach tibial intramedullary nailing provided by the invention is compared with existing tibial intramedullary nailing, select kneecap tendon inner edge and tibia pes anserinus stop upper limb as intramedullary pin entry point when can realize implanting, entry point and intramedullary pin near-end is made to avoid patellar ligament like this, avoid the damage to patellar ligament, thus pain before avoiding postoperative kneecap.Tibial intramedullary nailing of the present invention is rational in infrastructure, function admirable, can carry out good mating with tibia pulp cavity, reaches and effectively treats fracture of tibia and the good result improving quality of life of patients.
Accompanying drawing explanation
Fig. 1 is the front view of tibial intramedullary nailing of the present invention;
Fig. 2 is the profile of Fig. 1;
Fig. 3 is the A-A line sectional view along Fig. 1;
Fig. 4 is B-B line along Fig. 1 and C-C line sectional view;
In figure, mark is described as follows:
1-near-end, 2-far-end, 3-near-end lock hole, 4-near-end pressurization hole, 5-far-end locking hole.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with accompanying drawing, the present invention is further described.Specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, anterior-medial approach tibial intramedullary nailing of the present invention comprises the far-end 2 that a near-end 1, is applicable to insert pulp cavity, and near-end 1 is the part of diagram L1 length, and far-end 2 is the part of diagram L2 length.Angle a between near-end 1 centrage and intramedullary pin longitudinal axis is 18 °-22 °.Intramedullary pin longitudinal axis refers to that centrage refers to the line along intramedullary pin axis direction by intra medullary nail far-end z axis vertically on figure mono-.In one preferred embodiment, the angle a between near-end 1 centrage and intramedullary pin longitudinal axis is 20 °.In addition, far-end 2 also comprises near the far-end epimere m of the near-end 1 and far-end hypomere n away from near-end 1, and the angle b between the centrage of far-end epimere m and the centrage of far-end hypomere n is 0 °-4 °.Near-end 1 and the far-end 2 of intramedullary pin of the present invention have a transition segmental arc, circular arc radius of curvature R 1 is 50mm, far-end 2 also can have a transition segmental arc near the far-end epimere m of near-end 1 and the far-end hypomere n away from near-end 1, and circular arc radius of curvature R 2 is 1500mm.The diameter of phi d of near-end 1 is 11.5mm or 13mm.Intramedullary pin entirety is hollow or solid design.The design of this structure meets the anatomical features of tibia pulp cavity, can carry out good mating with tibia pulp cavity.Particularly, the design of this angle ensure that the anterior-medial approach mode of intramedullary pin at kneecap tendon inner edge and tibia pes anserinus stop upper limb, effectively can avoid pain before postoperative kneecap, improve quality of life of patients.
As shown in Figure 2, according to bone structure and osseous tissue different characteristics, the near-end 1 of tibial intramedullary nailing of the present invention also comprises one or more lock hole 3, one or more pressurization hole 4.The centrage of near-end 1 and far-end 2 in one plane, using the dissection surface of this plane as intramedullary pin.Near-end lock hole 3 centrage and the proximal hub line angle c on intramedullary pin dissection surface is 80 °.As shown in Figure 3, the angle d of near-end pressurization hole 4 centrage and intramedullary pin dissection surface is 30 °.The angle design in near-end lock hole and near-end pressurization hole can realize near-end cross lock preferably, can fix fracture end better.
As shown in Figure 4, the number in the far-end locking hole 5 of tibial intramedullary nailing of the present invention is at least 2, and wherein the dissection surface angle e of the projection of any 2 far-end locking holes 5 on the cross section of intramedullary pin and intramedullary pin and f sum are greater than 0 °, are less than or equal to 90 °.This structural design can realize the good cross lock in intra medullary nail far-end position, thus carries out good fixing to fracture end.
In addition, anterior-medial approach tibial intramedullary nailing of the present invention can be between intramedullary pin near-end 1 centrage and intramedullary pin longitudinal axis, have an angle, and its proximal part and distal portions are linear structure, without any bending; Can also be between intramedullary pin near-end 1 centrage and intramedullary pin longitudinal axis, have an angle, its distal portions entirety be the arcuate structure mated with pulp cavity.
Anterior-medial approach tibial intramedullary nailing provided by the invention is compared with existing tibial intramedullary nailing, select kneecap tendon inner edge and tibia pes anserinus stop upper limb as the anterior-medial approach mode of intramedullary pin entry point when can realize implanting, entry point and intramedullary pin near-end is made to avoid patellar ligament like this, avoid the damage to patellar ligament, thus pain before avoiding postoperative kneecap, significant to the life quality improving patient.
Claims (7)
1. an anterior-medial approach tibial intramedullary nailing, comprise the far-end L2 (2) that a near-end L1 (1), is applicable to be inserted in pulp cavity, it is characterized in that, angle a between near-end L1 (1) centrage and intramedullary pin longitudinal axis is 18 °-22 °, have a transition segmental arc between described near-end L1 (1) and far-end L2 (2), radius of curvature R 1 is 50mm.
2. anterior-medial approach tibial intramedullary nailing according to claim 1, it is characterized in that, described far-end L2 (2) comprises near the far-end epimere m of near-end L1 (1) and the far-end hypomere n away from near-end L1 (1), and the angle b between the centrage of far-end epimere m and the centrage of far-end hypomere n is 0 °-4 °.
3. anterior-medial approach tibial intramedullary nailing according to claim 2, is characterized in that, has transition segmental arc between described far-end epimere m and far-end hypomere n, and radius of curvature R 2 is 1500mm.
4. anterior-medial approach tibial intramedullary nailing according to claim 3, it is characterized in that, described near-end L1 (1) comprises at least one lock hole (3), and lock hole centrage and near-end L1 (1) centrage are 80 ° at the angle c in near-end L1 and face, far-end L2 centrage place.
5. anterior-medial approach tibial intramedullary nailing according to claim 1, it is characterized in that, described near-end L1 (1) also comprises at least one pressurization hole (4), and the angle d in pressurization centerline hole and near-end L1 and face, far-end L2 centrage place is 30 °.
6. anterior-medial approach tibial intramedullary nailing according to claim 1, is characterized in that, described far-end L2 comprises at least two far-end locking holes (5).
7. anterior-medial approach tibial intramedullary nailing according to claim 6, it is characterized in that, angle e and the f sum in the projection on the cross section of intramedullary pin of the centrage of described two far-end locking holes (5) and near-end L1 and face, far-end L2 centrage place are greater than 0 °, are less than or equal to 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110155072.XA CN102784002B (en) | 2011-05-17 | 2011-06-10 | Tibial intramedullary nail |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120157298.9 | 2011-05-17 | ||
| CN201120157298 | 2011-05-17 | ||
| CN2011201572989 | 2011-05-17 | ||
| CN201110155072.XA CN102784002B (en) | 2011-05-17 | 2011-06-10 | Tibial intramedullary nail |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102784002A CN102784002A (en) | 2012-11-21 |
| CN102784002B true CN102784002B (en) | 2015-03-11 |
Family
ID=45887251
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201940410U Expired - Lifetime CN202179588U (en) | 2011-05-17 | 2011-06-10 | Intramedullary nail for tibia |
| CN201110155072.XA Active CN102784002B (en) | 2011-05-17 | 2011-06-10 | Tibial intramedullary nail |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201940410U Expired - Lifetime CN202179588U (en) | 2011-05-17 | 2011-06-10 | Intramedullary nail for tibia |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN202179588U (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202179588U (en) * | 2011-05-17 | 2012-04-04 | 北京纳通科技集团有限公司 | Intramedullary nail for tibia |
| CN107260287B (en) * | 2017-07-27 | 2023-03-21 | 焦作市新港医疗设备有限公司 | Tibia/humerus intramedullary nail, tibia group and humerus group using same |
| CN107961067B (en) * | 2018-01-12 | 2021-05-07 | 四川大学华西医院 | Lateral inlet tibiobone marrow internal needle |
| CN108420518A (en) * | 2018-03-23 | 2018-08-21 | 山东航维骨科医疗器械股份有限公司 | Intramedullary nail on a kind of condyle |
| CN109009403B (en) * | 2018-09-11 | 2023-12-19 | 苏州中科生物医用材料有限公司 | Intramedullary nail sleeve device for patellar access tibia |
| CN112780754B (en) * | 2021-01-20 | 2023-03-21 | 清华大学 | Rod-shaped device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1322307C (en) * | 1988-03-14 | 1993-09-21 | Robert Frigg | Medullary nail for the tibia |
| CN2309127Y (en) * | 1997-09-11 | 1999-03-03 | 武进第三医疗器械厂 | Tibia locked intramedullary nail |
| US6547791B1 (en) * | 1998-07-27 | 2003-04-15 | Stryker Trauma - Selzach Ag | Retrograde tibial nail |
| CN200998305Y (en) * | 2007-01-19 | 2008-01-02 | 王永清 | Multifunctional tibia marrow nail |
| CN101507652A (en) * | 2009-03-20 | 2009-08-19 | 周志海 | Knee joint approach intramedullary nail |
| CN202179588U (en) * | 2011-05-17 | 2012-04-04 | 北京纳通科技集团有限公司 | Intramedullary nail for tibia |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0419234B8 (en) * | 2004-12-31 | 2021-06-22 | Synthes Gmbh | intramedullary pin |
-
2011
- 2011-06-10 CN CN2011201940410U patent/CN202179588U/en not_active Expired - Lifetime
- 2011-06-10 CN CN201110155072.XA patent/CN102784002B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1322307C (en) * | 1988-03-14 | 1993-09-21 | Robert Frigg | Medullary nail for the tibia |
| CN2309127Y (en) * | 1997-09-11 | 1999-03-03 | 武进第三医疗器械厂 | Tibia locked intramedullary nail |
| US6547791B1 (en) * | 1998-07-27 | 2003-04-15 | Stryker Trauma - Selzach Ag | Retrograde tibial nail |
| CN200998305Y (en) * | 2007-01-19 | 2008-01-02 | 王永清 | Multifunctional tibia marrow nail |
| CN101507652A (en) * | 2009-03-20 | 2009-08-19 | 周志海 | Knee joint approach intramedullary nail |
| CN202179588U (en) * | 2011-05-17 | 2012-04-04 | 北京纳通科技集团有限公司 | Intramedullary nail for tibia |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102784002A (en) | 2012-11-21 |
| CN202179588U (en) | 2012-04-04 |
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