CN105997213A - Auto-locking intramedullary nail for thighbone - Google Patents
Auto-locking intramedullary nail for thighbone Download PDFInfo
- Publication number
- CN105997213A CN105997213A CN201610456277.4A CN201610456277A CN105997213A CN 105997213 A CN105997213 A CN 105997213A CN 201610456277 A CN201610456277 A CN 201610456277A CN 105997213 A CN105997213 A CN 105997213A
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- nail
- pin
- main
- locking
- femur
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/725—Intramedullary pins, nails or other devices with special means of locking the nail to the bone with locking pins or screws of special form
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7216—Intramedullary pins, nails or other devices for bone lengthening or compression
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/72—Intramedullary pins, nails or other devices
- A61B17/7233—Intramedullary pins, nails or other devices with special means of locking the nail to the bone
- A61B17/7241—Intramedullary pins, nails or other devices with special means of locking the nail to the bone the nail having separate elements through which screws pass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/74—Devices for the head or neck or trochanter of the femur
- A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
- A61B17/744—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to an intramedullary nail
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Neurology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention provides an auto-locking intramedullary nail for the thighbone and relates to the technical field of medical equipment for the department of orthopedics. The auto-locking intramedullary nail comprises a main nail, an auxiliary nail, a screw blade nail, pore channels and a tail cap, wherein a connecting part is arranged at the distal end of the main nail; the screw blade nail is connected onto the connecting part in a sleeving manner and can freely rotate through the connecting part; the pore channels spreading outwards are uniformly arranged in the circumferential direction of the distal end of the main nail; the auxiliary nail is inserted into the main nail and is a bunchy body formed by rigid needles with the number corresponding to the number of the pore channels, and the rigid needles penetrate out of the corresponding pore channels; the proximal end of the main nail adopts an open structure; the tail cap is connected to the open structure of the main nail and connected with the auxiliary nail in the main nail. The auto-locking intramedullary nail can apply sufficient pressure to a fracture line and prevent the bone from rotating malposition effectively.
Description
Technical field
The present invention relates to orthopaedics technical field of medical instruments, be specifically related to a kind of self-locking intramedullary nail of femur.
Background technology
Fracture refers to owing to the reason such as wound or pathology causes bone parts or a kind of disease ruptured completely.Reset, fixing, these three basic principles of functional exercise are followed in the treatment of fracture.Reset is the fracture site that is shifted over will again to recover normal or close to original normal position, again to recover the support effect of skeleton after fracture.After the reduction of the fracture, if without fixedly securing, being susceptible to shift again, therefore should give corresponding fixing to promote union of fracture after the reduction of the fracture.
The conventional fixing means of fracture is divided into extenal fixation and interior fixing.Along with internal fixation material, operation method are updated and people's transformation to fractures method idea, fracture trends towards surgical menopause treatment more now.Inside-fixture can be broadly divided into marrow external fixer and Medullary fixation device, and from 19th century, blade plate and intramedullary pin are progressively in the treatment of long tubular bone fracture.
Intramedullary pin is a kind of therapeutic medical orthopedic fixation device tool, and Chinese patent " a kind of femur strand lock intramedullary nail " (Authorization Notice No. CN203468719U) discloses a kind of femur strand lock intramedullary nail, and it includes near-end and nail rod, and the two is structure as a whole and for hollow；This nail rod end is far-end；This near-end is horizontal positioned, and this nail rod and this near-end place horizontal plane are one first angle, and this near-end and this nail rod place perpendicular are one second angle；This near-end is provided with several through holes, and end is provided with connecting hole；This far-end is provided with several through holes.This patent can play part and prevent fracture site twisting action, but can not control the problems such as the rotation of fracture site, horizontal fine motion completely.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of fully to fracture line pressurization, effectively prevent the rotary shifted self-locking intramedullary nail of femur of bone.
nullIn order to solve above-mentioned technical problem，The present invention provides a kind of self-locking intramedullary nail of femur，Including main nail、Auxiliary nail、Screw blade is followed closely、Duct and tail cap，Described main needle distal is provided with connecting portion，Described screw blade nail is socketed on described connecting portion，And described screw blade nail can be rotated freely by described connecting portion，Described main nail far-end circumference is evenly arranged with the duct outwards dissipated，Described auxiliary pin is inserted in described main pin，Described auxiliary pin is the pencil body being made up of the rigid needle of corresponding described duct quantity，And described rigid needle passes from corresponding duct，Described main nail near-end is uncovered structure，Described tail cap is connected to be connected with described auxiliary pin at the uncovered structure of described main pin and in described main pin，The screw blade nail of the present invention is connected can rotate freely with main nail，During main nail is inserted，Screw blade nail can provide enough lifting power after squeezing into far-end pine fracture，Ensure to eliminate the lifting of fracture gap.
Preferably, described screw blade nail includes ailhead, tail sleeve and pin, described ailhead is provided with anti-rotation fin, the most described anti-rotation fin side is provided with described tail sleeve, described tail sleeve is cylindrical hollow configuration, and described tail sleeve side has pin hole, and described pin hole matches with pin, the screw blade of this structure is followed closely during main nail is inserted, it is easier to squeezes into far-end pine fracture and can provide enough lifting power.
Preferably, described connecting portion is cylindrical structural, described cylindrical structural and described cylindrical hollow configuration matched in clearance, and cylindrical structural circumference has annular groove, described pin is by pin hole and described annular groove matched in clearance, and this structure ensure that the rotation that screw blade is followed closely.
Preferably, described auxiliary pin is the pencil body being made up of three rigid needle, and the far-end circumference of described main pin is uniformly arranged three ducts, the auxiliary pin of the present invention is come in distal portion fork by the duct of main nail, insert far-end pine fracture, can effectively prevent distal bone folded block from rotating, prevent from resetting and lost efficacy.
Preferably, described duct penetrates main pin from inside to outside in divergent shape, and forms auxiliary needle tray at main wire surface, and this structure facilitates being mounted and taken out of auxiliary pin.
Preferably, described screw blade nails on and is provided with the groove matched with described auxiliary needle tray, and described groove is uniformly distributed along screw blade nail circumference, and auxiliary pin is come in distal portion fork by the duct of main nail, after inserting far-end pine fracture, auxiliary pin is stuck in the groove in tail sleeve restriction screw blade nail and rotates.
Preferably, also include near-end pinning and locking nail hole, described main pin near-end is provided with at least one locking nail hole, described tail cap is provided with the through hole corresponding with described locking nail hole, described locking nail hole and through hole run through near-end pinning, squeeze into near-end pinning after fracture line joint close, fracture pressurization stress is effectively ensured, can ensure that main nail does not rotates in pulp cavity simultaneously.
Preferably, described main nail be shaped as arc, the radian of described arc is identical with the radian of femoral bone cavitas medullaris anatomical shape.
Beneficial effects of the present invention:
1) original femur self-locking nail uses fracture line pressurization insufficient, the screw blade nail of the present invention is connected can rotate freely with main nail, during main nail is inserted, far-end pine fracture squeezed into by screw blade nail needs to ensure that it can rotate freely, enough lifting power can be provided, it is ensured that the lifting of fracture gap eliminated after squeezing into pine fracture.
2) the fixing instability of original femur self-locking nail far-end, anti-rotation performance is poor, and the auxiliary pin of the present invention is come in distal portion fork by the duct of main nail, inserts far-end pine fracture, can effectively prevent distal bone folded block from rotating, and prevents from resetting and lost efficacy.
3) tail cap that the present invention is arranged effectively prevents soft tissue from growing into the hollow type intracavity of self-locking intramedullary nail of femur.
4) profile of the main nail of the present invention is the shape meeting femoral bone cavitas medullaris anatomical angulation, convenient operation.
Accompanying drawing explanation
Accompanying drawing is for providing a further understanding of the present invention, and constitutes a part for description, is used for together with embodiments of the present invention explaining the present invention, is not intended that limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of self-locking intramedullary nail of femur of the present invention；
Fig. 2 is the screw blade pin structure schematic diagram of self-locking intramedullary nail of femur of the present invention；
Fig. 3 is the connecting portion structural representation of self-locking intramedullary nail of femur of the present invention；
Fig. 4 is the distal structure schematic diagram of self-locking intramedullary nail of femur of the present invention；
Fig. 5 is the proximal structure schematic diagram of self-locking intramedullary nail of femur of the present invention；
Fig. 6 is the auxiliary needle construction schematic diagram of self-locking intramedullary nail of femur of the present invention.
Figure is labeled as: 1, main nail；2, auxiliary nail；21, rigid needle；3, screw blade nail；31, ailhead；32, tail sleeve；4, tail cap；41, through hole；5, connecting portion；51, annular groove；6, duct；61, auxiliary needle tray；62, groove；7, pin hole；8, pin；9, locking nail hole；10, near-end pinning.
Detailed description of the invention
The preferred embodiment of the present invention is described below in conjunction with the accompanying drawings.
nullSuch as Fig. 1、2、Shown in 3，A kind of self-locking intramedullary nail of femur of the present invention，Including main nail 1、Auxiliary nail 2、Screw blade nail 3、Tail cap 4 and duct 6，Main pin 1 far-end is provided with connecting portion 5，Screw blade nail 3 is socketed on connecting portion 5，And screw blade nail 3 can be rotated freely by connecting portion 5，Main nail 1 far-end circumference is evenly arranged with the duct 6 outwards dissipated，Auxiliary pin 2 is inserted in main pin 1，Auxiliary pin 2 is the pencil body being made up of the rigid needle 21 of corresponding duct 6 quantity，And rigid needle 21 passes from corresponding duct 6，Main nail 1 near-end is uncovered structure，Tail cap 4 is connected to be connected with auxiliary pin 2 at the uncovered structure of main pin 1 and in main pin 1，The screw blade nail 3 of the present invention is connected can rotate freely with main nail 1，During main nail 1 is inserted，Screw blade nail 3 can provide enough lifting power after squeezing into far-end pine fracture，Ensure to eliminate the lifting of fracture gap.
Screw blade nail 3 includes ailhead 31, tail sleeve 32 and pin 8, ailhead 31 is provided with anti-rotation fin, the most anti-rotation fin side is provided with tail sleeve 32, tail sleeve 32 is cylindrical hollow configuration, tail sleeve 32 side has pin hole 7, pin hole 7 matches with pin 8, and the screw blade nail 3 of this structure is during main nail 1 is inserted, it is easier to squeezes into far-end pine fracture and can provide enough lifting power.
Connecting portion 5 is cylindrical structural, cylindrical structural and cylindrical hollow configuration matched in clearance, and cylindrical structural circumference has annular groove 51, and pin 8 is by pin hole 7 and annular groove 51 matched in clearance, and this structure ensure that the rotation of screw blade nail 3.
Auxiliary pin 2 is the pencil body being made up of three rigid needle 21, and the far-end circumference of main pin 1 is uniformly arranged three ducts 6, the auxiliary pin 2 of the present invention is come in distal portion fork by the duct 6 of main nail 1, inserts far-end pine fracture, can effectively prevent distal bone folded block from rotating, prevent from resetting and lost efficacy.
Duct 6 penetrates main pin 1 from inside to outside in divergent shape, and forms auxiliary needle tray 61 on main pin 1 surface, and this structure facilitates being mounted and taken out of auxiliary pin 2.
Screw blade nail 3 is provided with the groove 62 matched with auxiliary needle tray 61, groove 62 is followed closely 3 circumferences along screw blade and is uniformly distributed, auxiliary pin 2 is come in distal portion fork by the duct 6 of main nail 1, and after inserting far-end pine fracture, auxiliary pin 2 is stuck in the groove 62 in tail sleeve 32 restriction screw blade nail 3 rotation.
Also include locking nail hole 9 and near-end pinning 10, main pin 1 near-end is provided with at least one locking nail hole 9, tail cap 4 is provided with the through hole 41 corresponding with locking nail hole 9, locking nail hole 9 and through hole 41 run through near-end pinning 10, near-end pinning 10 is squeezed into after fracture line joint close, fracture pressurization stress is effectively ensured, can ensure that main nail 1 does not rotates in pulp cavity simultaneously.
The working method of the present invention:
When carrying out actual operation, doctor is prior to femur perforate, main pin 1 is planted femur inner chamber to correspondence position, far-end pine fracture squeezed into by screw blade nail 3, plant bottom main pin 1 chamber auxiliary pin 2, one end of main pin 1 is provided with three ducts 6 of decile circumference, duct 6 penetrates main pin 1 from inside to outside in divergent shape, auxiliary pin 2 is the pencil body of three rigid needle 21 compositions, rigid needle 21 passes from corresponding duct 6, access tail cap 4, compress tail cap 4 to be inserted along the open-mouth of main pin 1 inner chamber by auxiliary pin 2, tail cap 4 produces pressure to auxiliary pin 2 pencil body bottom, three rigid needle 21 making auxiliary pin 2 are fixed and are assigned in femur internal chamber wall, squeeze into near-end pinning 10 after fracture line joint close and be fixed in femoral cavity.The present invention increases far-end rotatable screw blade nail 3, squeeze in far-end pine fracture and can effectively connect, lifted by apparatus, fully fracture line is pressurizeed, the internal three auxiliary pins 2 of main nail 1 can effectively prevent bone rotary shifted in inserting far-end spongy bone by far-end bifurcated, improves bone surgery quality.
The foregoing is only the preferred embodiments of the present invention, it is not limited to the present invention, although the present invention being described in detail with reference to previous embodiment, for a person skilled in the art, technical scheme described in foregoing embodiments still can be modified by it, or wherein portion of techniques feature is carried out equivalent.All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (8)
1. a self-locking intramedullary nail of femur, it is characterized in that: include main nail, auxiliary nail, screw blade is followed closely, duct and tail cap, described main needle distal is provided with connecting portion, described screw blade nail is socketed on described connecting portion, and described screw blade nail can be rotated freely by described connecting portion, described main nail far-end circumference is evenly arranged with the duct outwards dissipated, described auxiliary pin is inserted in described main pin, described auxiliary pin is the pencil body being made up of the rigid needle of corresponding described duct quantity, and described rigid needle passes from corresponding duct, described main nail near-end is uncovered structure, described tail cap is connected to be connected with described auxiliary pin at the uncovered structure of described main pin and in described main pin.
Self-locking intramedullary nail of femur the most according to claim 1, it is characterized in that: described screw blade nail includes ailhead, tail sleeve and pin, described ailhead is provided with anti-rotation fin, the most described anti-rotation fin side is provided with described tail sleeve, described tail sleeve is cylindrical hollow configuration, described tail sleeve side has pin hole, and described pin hole matches with pin.
Self-locking intramedullary nail of femur the most according to claim 2, it is characterized in that: described connecting portion is cylindrical structural, described cylindrical structural and described cylindrical hollow configuration matched in clearance, and cylindrical structural circumference has annular groove, described pin is by pin hole and described annular groove matched in clearance.
Self-locking intramedullary nail of femur the most according to claim 1, it is characterised in that: described auxiliary pin is the pencil body being made up of three rigid needle, and the far-end circumference of described main pin is uniformly arranged three ducts.
Self-locking intramedullary nail of femur the most according to claim 1, it is characterised in that: described duct penetrates main pin from inside to outside in divergent shape, and forms auxiliary needle tray at main wire surface.
Self-locking intramedullary nail of femur the most according to claim 5, it is characterised in that: described screw blade nails on and is provided with the groove matched with described auxiliary needle tray, and described groove is uniformly distributed along screw blade nail circumference.
Self-locking intramedullary nail of femur the most according to claim 1, it is characterized in that: also include near-end pinning and locking nail hole, described main pin near-end is provided with at least one locking nail hole, and described tail cap is provided with the through hole corresponding with described locking nail hole, and described locking nail hole and through hole run through near-end pinning.
8. according to the self-locking intramedullary nail of femur described in any one of claim 1 ~ 7, it is characterised in that: described main nail be shaped as arc, the radian of described arc is identical with the radian of femoral bone cavitas medullaris anatomical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610456277.4A CN105997213B (en) | 2016-06-22 | 2016-06-22 | Self-locking intramedullary nail of femur |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610456277.4A CN105997213B (en) | 2016-06-22 | 2016-06-22 | Self-locking intramedullary nail of femur |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105997213A true CN105997213A (en) | 2016-10-12 |
| CN105997213B CN105997213B (en) | 2019-03-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610456277.4A Active CN105997213B (en) | 2016-06-22 | 2016-06-22 | Self-locking intramedullary nail of femur |
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| CN (1) | CN105997213B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107198562A (en) * | 2017-07-27 | 2017-09-26 | 焦作市新港医疗设备有限公司 | A kind of fibula/radius intramedullary nail and the fibula group and radius group using the fibula/radius intramedullary nail |
| CN108403199A (en) * | 2018-01-25 | 2018-08-17 | 吴旋 | Arthroscopic surface helix locking structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2369639Y (en) * | 1999-04-06 | 2000-03-22 | 蒋谊康 | Intramedullary pin with self locking device at remote end |
| CN202458648U (en) * | 2012-02-21 | 2012-10-03 | 季文婷 | Spiral blade type inner bone marrow locking nail |
| CN202714906U (en) * | 2012-07-16 | 2013-02-06 | 苏州吉美瑞医疗器械有限公司 | Femoral self-locking nail |
| WO2015059717A1 (en) * | 2013-10-22 | 2015-04-30 | General Surgical Company (India) Pvt Limited | A device for bone support with improved rotational stability |
| CN206007348U (en) * | 2016-06-22 | 2017-03-15 | 苏州吉美瑞医疗器械有限公司 | Self-locking intramedullary nail of femur |
-
2016
- 2016-06-22 CN CN201610456277.4A patent/CN105997213B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2369639Y (en) * | 1999-04-06 | 2000-03-22 | 蒋谊康 | Intramedullary pin with self locking device at remote end |
| CN202458648U (en) * | 2012-02-21 | 2012-10-03 | 季文婷 | Spiral blade type inner bone marrow locking nail |
| CN202714906U (en) * | 2012-07-16 | 2013-02-06 | 苏州吉美瑞医疗器械有限公司 | Femoral self-locking nail |
| WO2015059717A1 (en) * | 2013-10-22 | 2015-04-30 | General Surgical Company (India) Pvt Limited | A device for bone support with improved rotational stability |
| CN206007348U (en) * | 2016-06-22 | 2017-03-15 | 苏州吉美瑞医疗器械有限公司 | Self-locking intramedullary nail of femur |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107198562A (en) * | 2017-07-27 | 2017-09-26 | 焦作市新港医疗设备有限公司 | A kind of fibula/radius intramedullary nail and the fibula group and radius group using the fibula/radius intramedullary nail |
| CN107198562B (en) * | 2017-07-27 | 2023-03-21 | 焦作市新港医疗设备有限公司 | Fibula/radius intramedullary nail and fibula group and radius group using intramedullary nail |
| CN108403199A (en) * | 2018-01-25 | 2018-08-17 | 吴旋 | Arthroscopic surface helix locking structure |
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| Publication number | Publication date |
|---|---|
| CN105997213B (en) | 2019-03-08 |
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Address after: Fengzhen Jin Nan Lu Jin Zhangjiagang city Suzhou City, Jiangsu province 215600 (Jinfeng Technology Park A22, 26) Applicant after: Suzhou Jimei Rui medical equipment Limited by Share Ltd Address before: Fengzhen Jin Nan Lu Jin Zhangjiagang city Suzhou City, Jiangsu province 215600 (Jinfeng Technology Park A22, 26) Applicant before: Suzhou Ji Meirui Medical Devices Co., Ltd. |
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