CN103976783B - Disposable fracture reduction tractor - Google Patents
Disposable fracture reduction tractor Download PDFInfo
- Publication number
- CN103976783B CN103976783B CN201410231277.5A CN201410231277A CN103976783B CN 103976783 B CN103976783 B CN 103976783B CN 201410231277 A CN201410231277 A CN 201410231277A CN 103976783 B CN103976783 B CN 103976783B
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- China
- Prior art keywords
- expansion link
- montant
- external screw
- fine steel
- screw thread
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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
- A61B17/60—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 for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Medical Informatics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
A kind of disposable fracture reduction tractor. It comprises two pieces of "T"-shaped fine steel needles, expansion link, two expansion link sleeves and two sealing caps; "T"-shaped fine steel needle is made up of cross bar and montant, in montant outer end face, is formed with external screw thread; Expansion link middle part is manual rotating handle, on the outer surface of two ends, is formed with external screw thread; On expansion link lower cartridge inner surface, be formed with the internal thread matching with external screw thread on above-mentioned expansion link, upper end is formed with 3 teeth groove, and two expansion link sleeves are threaded in the outside, two ends of expansion link in symmetrical mode; On the inner surface of sealing cap, be formed with internal thread, two sealing caps are threaded in respectively the outside, upper end of two expansion link sleeves. Effect of the present invention: can simplify the operation of the reduction of the fracture in operation; Alternative traction table or manpower traction; 5 axle interlocks can make the reduction of the fracture more accurate; Utilize Mechanics of Machinery and biomethanics to make traction reduction more easy to operate; Reasonable in design, safe and reliable, easy operating.
Description
Technical field
The invention belongs to technical field of medical instruments, particularly relate to a kind of disposable fracture traction and resetDevice.
Background technology
In fracture internal fixation operation, the reduction of the fracture is a very important step, is also one of the most difficult operationStep, usually need to be aided with apparatus sled by traction table or manpower traction and the mode such as dial and complete. Although have at presentA little external fracture reposition instrument products have been introduced China, and it is metal material, and when use, 3 axle tractions strut,Fine steel needle is fixed on key two ends, struts by mechanical force, and the reduction of the fracture is more difficult. Due to this fractureRestorer is positioned at suffering limb outside, and operation technique and interior fixing implantation are caused to very large impact, therefore orderFront clinical practice is little.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide a kind of reasonable in design, safetyReliably, the disposable fracture reduction tractor of easy operating.
In order to achieve the above object, disposable fracture reduction tractor provided by the invention comprises two pieces " T "Shape fine steel needle, expansion link, two expansion link sleeves and two sealing caps; Wherein "T"-shaped fine steel needle byCross bar and montant form, and are formed with external screw thread in the outer end face of montant; The middle part of expansion linkFor manual rotating handle, on the outer surface of two ends, be formed with external screw thread; In the lower inner surface of expansion link sleeve, formHave the internal thread matching with external screw thread on above-mentioned expansion link, upper end is formed with 3 teeth groove, and wherein twoIndividual teeth groove is for inserting the cross bar two ends on "T"-shaped fine steel needle, and another teeth groove is for inserting " T "The inner end of montant on shape fine steel needle, and in upper-end outer surface, be formed with external screw thread, two are flexibleRod sleeve is threaded in the outside, two ends of expansion link in symmetrical mode; On the inner surface of sealing cap, be formed withInternal thread, two sealing caps are threaded in respectively the outside, upper end of two expansion link sleeves.
Manual rotating handle on described expansion link is multi-edge column-shaped.
On the montant outer end of described "T"-shaped fine steel needle, externally threaded length accounts for one of montant total lengthHalf.
Described "T"-shaped fine steel needle adopts metal material to make, expansion link, expansion link sleeve and envelopeCap adopts medical grade plastic materials to make.
Disposable fracture reduction tractor provided by the invention has following beneficial effect:
1, can simplify the operation of the reduction of the fracture in operation; Alternative traction table or manpower traction;
2,5 axle interlocks can make the reduction of the fracture more accurate, and 5 axles refer to: "T"-shaped fine steel needle cross tubeBe an axle, montant is an axle, 2 "T"-shaped fine steel needles totally 4 axles, expansion link and two expansion link coversCylinder is 1 axle, totally 5 axles;
3, utilize Mechanics of Machinery and biomethanics to make traction reduction more easy to operate; Disposable fracture traction is multipleThe Wicresoft that the use of position device is more conducive to realize fracture internal fixation operation; And disposable medical instrument can subtractAleopation in few hospital, meets modern medical service technical requirement.
4, disposable fracture reduction tractor is installed on femur inner side, and for crossing over joint traction, thereforeDo not affect the various operations in marrow or outside marrow. Because disposable fracture reduction tractor major part is plastics materialMatter, therefore do not affect the x-ray inspections such as hand fluoroscopy during operation film making.
5, reasonable in design, safe and reliable, easy operating.
Brief description of the drawings
Fig. 1 is disposable bone tractor structural perspective provided by the invention.
Fig. 2 is Telescopic rod structure stereogram in disposable bone tractor provided by the invention.
Fig. 3 is "T"-shaped fine steel needle structural perspective in disposable bone tractor provided by the invention.
Fig. 4 is expansion link tube-in-tube structure stereogram in disposable bone tractor provided by the invention.
Fig. 5 is sealing cap structural perspective in disposable bone tractor provided by the invention.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, disposable bone tractor provided by the invention is carried out in detailExplanation.
As Figure 1-Figure 5, disposable bone tractor provided by the invention comprises that two pieces of "T"-shaped bones leadDraw pin 1, expansion link 2, two expansion link sleeves 3 and two sealing caps 4; Wherein "T"-shaped fine steel needle 1Formed by cross bar 5 and montant 6, and be formed with external screw thread in the outer end face of montant 6; Expansion link 2Middle part be manual rotating handle, on the outer surface of two ends, be formed with external screw thread; The bottom of expansion link sleeve 3On inner surface, be formed with the internal thread matching with external screw thread on above-mentioned expansion link 2, upper end is formed with 3Individual teeth groove 7, wherein two teeth groove 7 are for inserting cross bar 5 two ends on "T"-shaped fine steel needle 1, anotherA teeth groove 7 is for inserting the inner end of montant 6 on "T"-shaped fine steel needle 1, and upper end appearanceOn face, be formed with external screw thread, two expansion link sleeves 3 are threaded in expansion link 2 in symmetrical modeOutside, two ends; On the inner surface of sealing cap 4, be formed with internal thread, two sealing caps 4 are threaded in respectively twoThe outside, upper end of individual expansion link sleeve 3.
Manual rotating handle on described expansion link 2 is multi-edge column-shaped.
On montant 6 outer ends of described "T"-shaped fine steel needle 1, externally threaded length accounts for montant 6 total lengthsHalf.
Described "T"-shaped fine steel needle 1 adopts metal material to make, expansion link 2, expansion link sleeve 3Adopt medical grade plastic materials to make with sealing cap 4.
Now as an example of femoral fracture example, disposable fracture reduction tractor using method provided by the invention is explainedState as follows:
1, "T"-shaped fine steel needle is installed: first on patient's condyle of femur inner side with vertical with sagittal planeMode screws in 1 piece " T " shape fine steel needle 1, then screw in another 1 in anterior superior spine leading edge perpendicular to coronal-planePiece "T"-shaped fine steel needle 1, makes two pins mutually vertical;
2, connection expansion link: utilize the method for rotating manual rotating handle on expansion link to adjust expansion link 2 and twoThe total length of individual expansion link sleeve 3, then makes two pieces of cross bar 5 two ends on "T"-shaped fine steel needle 1Insert respectively 3 teeth groove on corresponding expansion link sleeve 3 with montant 6 inner ends, screw afterwards sealing cap 4;
3, variable triangular structure: install after disposable fracture reduction tractor, see shape from sagittal planeBecome a triangle, three limits are respectively femoral shaft, expansion link 2 and hip joint to screwing in anterior superior spineThe cross bar 5 of "T"-shaped fine steel needle 1, latter two limit is fixed, femoral shaft this edge is variable.Leg-of-mutton three summits are respectively to screw on condyle of femur " T " montant 6, the hip of shape fine steel needle 1 closeThe cross bar 5 of the "T"-shaped fine steel needle 1 of joint and screw-in anterior superior spine and the sliding axle that expansion link 2 forms,Three angles are variable angle. In the time that angle changes, variable limit is inevitable to be changed thereupon.
4, the reduction of the fracture: in the time that fracture site need to draw, can bend hip and change leg-of-mutton angle and make boneDry elongated; In the time that fracture has sagittal plane displacement, can screw in the "T"-shaped fine steel needle 1 of anterior superior spineMontant 6 reset for axle; In the time having coronal-plane displacement, can screw on condyle of femur " T " shape boneThe montant 6 of pull needle 1 resets for axle; In the time having rotation displacement, can expansion link 2 carry out for axleReset.
Claims (4)
1. a disposable bone tractor, is characterized in that: it comprise two pieces of "T"-shaped fine steel needles (1),Expansion link (2), two expansion link sleeves (3) and two sealing caps (4); Wherein "T"-shaped bone tractionPin (1) is made up of cross bar (5) and montant (6), and is formed with in the outer end face of montant (6)External screw thread; The middle part of expansion link (2) is manual rotating handle, on the outer surface of two ends, is formed with external screw thread;In the lower inner surface of expansion link sleeve (3), be formed with the upper external screw thread of above-mentioned expansion link (2) and matchInternal thread, upper end is formed with 3 teeth groove (7), wherein two teeth groove (7) for insert " T "Cross bar (5) two ends on shape fine steel needle (1), another teeth groove (7) is for inserting "T"-shaped boneThe inner end of the upper montant (6) of pull needle (1), and in upper-end outer surface, be formed with external screw thread, twoIndividual expansion link sleeve (3) is threaded in the outside, two ends of expansion link (2) in symmetrical mode; Sealing cap(4) on inner surface, be formed with internal thread, two sealing caps (4) are threaded in respectively two expansion linksThe outside, upper end of sleeve (3).
2. disposable bone tractor according to claim 1, is characterized in that: described expansion link(2) manual rotating handle on is multi-edge column-shaped.
3. disposable bone tractor according to claim 1, is characterized in that: described " T "On montant (6) outer end of shape fine steel needle (1), externally threaded length accounts for one of montant (6) total lengthHalf.
4. disposable bone tractor according to claim 1, is characterized in that: described " T "Shape fine steel needle (1) adopts metal material to make, expansion link (2), expansion link sleeve (3) and envelopeCap (4) adopts medical grade plastic materials to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410231277.5A CN103976783B (en) | 2014-05-28 | 2014-05-28 | Disposable fracture reduction tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410231277.5A CN103976783B (en) | 2014-05-28 | 2014-05-28 | Disposable fracture reduction tractor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103976783A CN103976783A (en) | 2014-08-13 |
| CN103976783B true CN103976783B (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410231277.5A Active CN103976783B (en) | 2014-05-28 | 2014-05-28 | Disposable fracture reduction tractor |
Country Status (1)
| Country | Link |
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| CN (1) | CN103976783B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110840642A (en) * | 2019-12-06 | 2020-02-28 | 天津天好医疗器械有限公司 | Forearm fracture traction repositor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978348A (en) * | 1988-05-26 | 1990-12-18 | Ilizarov Gavriil A | Compression-distraction apparatus for osteosynthesis |
| CN2137500Y (en) * | 1992-12-17 | 1993-07-07 | 邹德威 | Orthopedic unit with angular positive-negative thread screw |
| CN2560310Y (en) * | 2002-08-27 | 2003-07-16 | 章祖林 | Calcaneus prizing external fixator |
| CN202288431U (en) * | 2011-09-28 | 2012-07-04 | 汤金城 | Bone fracture reductor for four limbs |
| CN202920320U (en) * | 2012-11-19 | 2013-05-08 | 汤金城 | Bone fracture repositor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999004714A1 (en) * | 1997-07-24 | 1999-02-04 | Stanislav Georgiev Nestorov | External fixator |
-
2014
- 2014-05-28 CN CN201410231277.5A patent/CN103976783B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4978348A (en) * | 1988-05-26 | 1990-12-18 | Ilizarov Gavriil A | Compression-distraction apparatus for osteosynthesis |
| CN2137500Y (en) * | 1992-12-17 | 1993-07-07 | 邹德威 | Orthopedic unit with angular positive-negative thread screw |
| CN2560310Y (en) * | 2002-08-27 | 2003-07-16 | 章祖林 | Calcaneus prizing external fixator |
| CN202288431U (en) * | 2011-09-28 | 2012-07-04 | 汤金城 | Bone fracture reductor for four limbs |
| CN202920320U (en) * | 2012-11-19 | 2013-05-08 | 汤金城 | Bone fracture repositor |
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| Publication number | Publication date |
|---|---|
| CN103976783A (en) | 2014-08-13 |
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