CN105310732B - Dilator in knee joint - Google Patents
Dilator in knee joint Download PDFInfo
- Publication number
- CN105310732B CN105310732B CN201510731497.9A CN201510731497A CN105310732B CN 105310732 B CN105310732 B CN 105310732B CN 201510731497 A CN201510731497 A CN 201510731497A CN 105310732 B CN105310732 B CN 105310732B
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- China
- Prior art keywords
- knee joint
- arc
- dilator
- strutted
- pin
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- 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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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/313—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes
- A61B1/317—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor for introducing through surgical openings, e.g. laparoscopes for bones or joints, e.g. osteoscopes, arthroscopes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0268—Joint distractors for the knee
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
Abstract
The invention belongs to technical field of medical instruments, more particularly, to dilator in a kind of knee joint.Dilator includes strutting on the arc that is engaged with knee joint fossa intercondyloidea in this knee joint struts body under body and the arc being engaged with intercondylar ridge, the middle part interconnection that body is strutted under body and arc is strutted on described arc, when dilator is placed between knee joint fossa intercondyloidea and intercondylar ridge in this knee joint and backend space when knee joint is in straight configuration positioned at knee joint fossa intercondyloidea and intercondylar ridge rear end is softened.Advantage is：Using the change of knee joint gap length during bending and stretching, progress knee joint is strutted in knee joint straightening procedure, and medial gap after opening increases meniscus range of exposure, facilitates related personnel to carry out joint sem observation and instrumentation to medial meniscus relief angle.
Description
Technical field
The invention belongs to technical field of medical instruments, more particularly, to dilator in a kind of knee joint.
Background technology
At present, in arthroscopy of knee and treatment, joint space, but inner side are mainly opened by the knee joint stress that turns up
Medial angle is close to joint center line after meniscus, even if medial gap is enough big, and rear medial angle can not appear well, such as climbs over outside
Degree is likely to result in the damage of medial collateral ligament, further, since medial meniscus relief angle anatomical position is very special, causes correlation
Personnel are difficult to carry out joint sem observation and instrumentation to it, also due to medial meniscus relief angle can not be using conventional meniscus
Repairing sewing method is formed " technical to ignore " so as to cause related personnel to abandon treatment, finally causes medial meniscus repairing
After heal than lateral meniscus heal it is poor.
In order to be improved to prior art, people have carried out long-term exploration, it is proposed that various solutions.
For example, Chinese patent literature discloses a kind of knee joint dilator [application number：CN201520291895.9], including left clamp handle,
The right clamp handle being hinged with the left clamp handle, the left clamp handle and the right clamp handle head are fixed with inclined binding clip, the left side
Spring assembly is provided between clamp handle and the right clamp handle, lock group is provided between the left clamp handle afterbody and the right clamp handle afterbody
Part, it is characterised in that the spring assembly includes the left spring piece being connected with the left clamp handle, the right side being connected with the right clamp handle
Spring leaf, the right spring leaf head is connected with the left spring sheet head；The binding clip head is provided with distraction plate, described to strut
The distraction surface that plate width is more than on the outside of the binding clip width, the distraction plate is provided with V-arrangement anti-slip veins, the V-arrangement anti-slip veins court
, the V-arrangement anti-slip veins self-supporting wide towards distraction plate afterbody side to the distraction plate head side face width of tooth V-arrangement anti-slip veins
Open the lateral distraction plate head center direction of plate two and tilt extension；The outage for discharge opeing is additionally provided with the distraction plate, it is described
Outage connects the medial surface of distraction surface and distraction plate.
Although such scheme solves the deficiencies in the prior art to a certain extent, meniscus can not be increased and appeared
Scope, it is impossible to reduce the damage of cartilage and meniscus, related personnel is still difficult to carry out arthroscope sight to medial meniscus relief angle
Examine and instrumentation.
The content of the invention
Regarding the issue above, the present invention provides it is a kind of reasonable in design, it is simple in construction, strut knee joint beneficial to interior
Dilator in the knee joint in gap.
To reach above-mentioned purpose, present invention employs following technical proposal：Dilator in this knee joint, it is characterised in that
It is described including strutting body under the arc that struts body on the arc that is engaged with knee joint fossa intercondyloidea and be engaged with intercondylar ridge
The middle part interconnection that body is strutted under body and arc is strutted on arc, when in this knee joint dilator be placed in knee joint fossa intercondyloidea and
Backend space between intercondylar ridge and when knee joint is in straight configuration positioned at knee joint fossa intercondyloidea and intercondylar ridge rear end is softened.
By knee sprung, the front end being put into for dilator in this knee joint is formed between knee joint fossa intercondyloidea and intercondylar ridge
Strut body on gap, arc to be placed between knee joint fossa intercondyloidea and intercondylar ridge, the outer support pin that body is strutted under arc is inserted into outside
The inner support pin that body is strutted in the condyle of side, under arc is inserted into entocondyle, and intercondylar ridge is inserted into inner groovy；Knee joint is stretched,
Backend space positioned at knee joint fossa intercondyloidea and intercondylar ridge rear end is softened.The application is bending and stretching process intermediate gap using knee joint
The change of size, progress knee joint is strutted in knee joint straightening procedure, medial gap after opening, and increase meniscus appears model
Enclose, facilitate related personnel to carry out joint sem observation and instrumentation to medial meniscus relief angle.
In above-mentioned knee joint in dilator, the top that body is strutted on described arc is recessed downwards and knee joint
The bottom that body is strutted under the inner recess that fossa intercondyloidea is engaged, described arc is recessed the indent inserted for intercondylar ridge upwards
Groove.Inner recess is engaged with knee joint fossa intercondyloidea, and inner groovy and intercondylar ridge are engaged, beneficial to dilator in knee joint in knee joint
Between fixation.
In above-mentioned knee joint in dilator, it is to be obliquely installed and strutted on arc body that body is strutted on described arc
Front end is inclined upwardly.Body is strutted in knee joint bending on the small triangle gap in the formation big rear end in front end, arc to be obliquely installed
It is put into beneficial to dilator in this knee joint.
In above-mentioned knee joint in dilator, body is strutted under described arc and is strutted including being fixed on arc in the middle part of body
Side and the outer support pin and being fixed on arc being adapted with external condyle strut in the middle part of body opposite side and mutually fitted with entocondyle
The inner support pin answered, forms the inner groovy being adapted with intercondylar ridge between described outer support pin and inner support pin.Outer support pin
It is located at both sides respectively with inner support pin, supportive is good.
In above-mentioned knee joint in dilator, outer support point pin is with after before the lower end bifurcated of described outer support pin is formed
Outer support point pin, the lower end bifurcated of described inner support pin forms preceding inner support point pin and rear inner support point pin.Preceding outer support point
Pin, rear outer support point pin, preceding inner support point pin and rear inner support point pin are distributed in four corners, and supportive is good.
In above-mentioned knee joint in dilator, shape is expanded in the lower end of described preceding outer support point pin and rear outer support point pin
Horizontally disposed first locating piece is open into, the lower surface of the first described locating piece fits with external condyle inwall.
In above-mentioned knee joint in dilator, shape is expanded in the lower end of described preceding inner support point pin and rear inner support point pin
Horizontally disposed second locating piece is open into, the lower surface of the second described locating piece fits with entocondyle inwall.
In above-mentioned knee joint in dilator, the flat formation in one end or two ends that body is strutted on described arc is flat
End, described flat end stretches out the end of knee joint fossa intercondyloidea.
In above-mentioned knee joint in dilator, it is characterised in that strutted on described arc and strut body under body and arc
Between to be vertically arranged.
In above-mentioned knee joint in dilator, strutted on described arc and strut body under body and arc and use resin material
It is made, the modulus of elasticity of described resin material is 0.1-2 times of meniscus or articular cartilage.This knee joint dilator according to
Fossa intercondyloidea feature is designed, from firmness is good, modulus of elasticity and meniscus or the close resin material system of articular cartilage
Into by 3D technology with making the matching degree in dilator and joint in knee joint high, the damage of cartilage and meniscus can be reduced.
Compared with prior art, the advantage of dilator is in this knee joint：
First, change of the application using knee joint gap length during bending and stretching, enters in knee joint straightening procedure
Row knee joint is strutted, medial gap after opening, is increased meniscus range of exposure, is facilitated related personnel to enter medial meniscus relief angle
Row joint sem observation and instrumentation.
Second, inner recess is engaged with knee joint fossa intercondyloidea, inner groovy and intercondylar ridge are engaged, beneficial to being strutted in knee joint
Fixation of the device between knee joint.
It is obliquely installed third, being formed in knee joint bending and strutting body on the small triangle gap in the big rear end in front end, arc
It is put into beneficial to dilator in this knee joint.Preceding outer support point pin, rear outer support point pin, preceding inner support point pin and rear inner support point
Pin is distributed in four corners, and supportive is good.
Fourth, this knee joint dilator is designed according to fossa intercondyloidea feature, from firmness is good, modulus of elasticity and first quarter moon
The close resin material of plate, articular cartilage is made, by 3D technology with making the matching degree in dilator and joint in knee joint
Height, can reduce the damage of cartilage and meniscus.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention is provided.
Strutted in figure, on arc strutted under body 1, arc body 2, inner recess 3, inner groovy 4, outer support pin 5, inner support pin 6,
Preceding outer support point pin 7, rear outer support point pin 8, preceding inner support point pin 9, rear inner support point pin 10, the first locating piece 11, second are determined
Position block 12, flat end 13.
Embodiment
Embodiment
As shown in figure 1, in this knee joint dilator include strutting on the arc that is engaged with knee joint fossa intercondyloidea body 1 and
Strutted under the arc being engaged with intercondylar ridge and the middle part interconnection that body 2 is strutted under body 1 and arc is strutted on body 2, arc, when this
In knee joint dilator be placed between knee joint fossa intercondyloidea and intercondylar ridge and knee joint be in straight configuration when be located at knee joint condyle
Between nest and the backend space of intercondylar ridge rear end be softened.First by knee sprung when using, knee joint fossa intercondyloidea and intercondylar ridge it
Between formed and strut body 1 on the front space being put into for dilator in this knee joint, arc and be placed in knee joint fossa intercondyloidea and intercondylar ridge
Between in, the outer support pin 5 that body 2 is strutted under arc is inserted into external condyle, and the inner support pin 6 that body 2 is strutted under arc is inserted into
In entocondyle, intercondylar ridge is inserted into inner groovy；Knee joint is stretched, between the rear end of knee joint fossa intercondyloidea and intercondylar ridge rear end
Gap is softened.The application carries out knee using the change of knee joint gap length during bending and stretching in knee joint straightening procedure
Joint is strutted, medial gap after opening, is increased meniscus range of exposure, is facilitated related personnel to close medial meniscus relief angle
Save sem observation and instrumentation.
Wherein, the top that body 1 is strutted on arc is recessed downwards the inner recess 3 being engaged with knee joint fossa intercondyloidea, arc
The bottom that body 2 is strutted under shape is recessed the inner groovy 4 inserted for intercondylar ridge upwards, and inner recess 3 matches with knee joint fossa intercondyloidea
Close, inner groovy 4 and intercondylar ridge are engaged, beneficial to fixation of the dilator in knee joint between knee joint.
It is that the front end for being obliquely installed and being strutted on arc body 1 is inclined upwardly that body 1 is strutted on arc, the shape in knee joint bending
Into the small triangle gap in the big rear end in front end, body 1 is strutted on arc it is obliquely installed and be put into beneficial to dilator in this knee joint.
Body 2 is strutted under arc to be included being fixed on the outer support for strutting the middle part side of body 1 on arc and being adapted with external condyle
Pin 5 and being fixed on struts the middle part opposite side of body 1 and the inner support pin 6 being adapted with entocondyle on arc, outer support pin 5 and interior
The inner groovy 4 being adapted with intercondylar ridge is formed between support feet 6.
Wherein, the lower end bifurcated of outer support pin 5 forms preceding outer support point pin 7 and rear outer support point pin 8, inner support pin 6
Lower end bifurcated forms preceding inner support point pin 9 and rear inner support point pin 10, preceding outer support point pin 7, rear outer support point pin 8, preceding interior branch
Support point pin 9 and rear inner support point pin 10 are distributed in four corners, and supportive is good.
The first locating piece 11 to form transverse horizontal setting is expanded in the lower end of preceding outer support point pin 7 and rear outer support point pin 8,
The lower surface of first locating piece 11 fits with external condyle inwall, and the lower end of preceding inner support point pin 9 and rear inner support point pin 10 is swollen
Big to form the second locating piece 12 that transverse horizontal is set, lower surface and the entocondyle inwall of the second locating piece 12 fit.
Wherein, the flat formation flat end 13 in one end or two ends of body 1 is strutted on arc, flat end 13 stretches out knee joint condyle
Between nest end, strut on arc and strutted under body 1 and arc between body 2 to be vertically arranged, strut and supportted under body 1 and arc on arc
Open body 2 to be made of resin material, the modulus of elasticity of resin material is 0.1-2 times of meniscus or articular cartilage.This knee is closed
Section dilator is designed according to fossa intercondyloidea feature, from firmness is good, modulus of elasticity and meniscus or articular cartilage it is close
Resin material be made, by 3D technology with making the matching degree in dilator and joint in knee joint high, can reduce cartilage and
The damage of meniscus.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Body 2, inner recess 3, inner groovy 4, outer branch are strutted under body 1, arc although more having used strutted on arc herein
Spike 5, inner support pin 6, preceding outer support point pin 7, rear outer support point pin 8, preceding inner support point pin 9, rear inner support point pin 10, first
The terms such as locating piece 11, the second locating piece 12, flat end 13, but it is not precluded from the possibility using other terms.Use these
Term is used for the purpose of more easily describing and explaining the essence of the present invention；It is construed as any additional limitation all
Disagreed with spirit of the present invention.
Claims (10)
1. dilator in a kind of knee joint, it is characterised in that including strutting body (1) on the arc that is engaged with knee joint fossa intercondyloidea
And strut to strut on body (2), described arc under the arc being engaged with intercondylar ridge body (2) is strutted under body (1) and arc
Middle part interconnection, when dilator is placed between knee joint fossa intercondyloidea and intercondylar ridge in this knee joint and knee joint is in and stretches shape
Backend space during state positioned at knee joint fossa intercondyloidea and intercondylar ridge rear end is softened.
2. dilator in knee joint according to claim 1, it is characterised in that the upper of body (1) is strutted on described arc
Portion be recessed downwards strutted under the inner recess (3) being engaged with knee joint fossa intercondyloidea, described arc body (2) bottom it is upward
It is recessed the inner groovy (4) inserted for intercondylar ridge.
3. dilator in knee joint according to claim 2, it is characterised in that strut body (1) on described arc to incline
The front end for tiltedly setting and body (1) being strutted on arc is inclined upwardly.
4. dilator in the knee joint according to claim 1 or 2 or 3, it is characterised in that strut body under described arc
(2) include being fixed on the outer support pin (5) for strutting body (1) middle part side on arc and being adapted with external condyle and be fixed on arc
Opposite side and the inner support pin (6) being adapted with entocondyle, described outer support pin (5) and interior branch in the middle part of body (1) are strutted in shape
The inner groovy (4) being adapted with intercondylar ridge is formed between spike (6).
5. dilator in knee joint according to claim 4, it is characterised in that the lower end of described outer support pin (5) point
Fork-shaped is into preceding outer support point pin (7) and rear outer support point pin (8), and the lower end bifurcated of described inner support pin (6) is interior before being formed to be propped up
Support point pin (9) and rear inner support point pin (10).
6. dilator in knee joint according to claim 5, it is characterised in that described preceding outer support point pin (7) and after
Expand the first locating piece (11) to form transverse horizontal setting, described the first locating piece (11) in the lower end of outer support point pin (8)
Lower surface fitted with external condyle inwall.
7. dilator in knee joint according to claim 5, it is characterised in that described preceding inner support point pin (9) and after
Expand the second locating piece (12) to form transverse horizontal setting, described the second locating piece (12) in the lower end of inner support point pin (10)
Lower surface fitted with entocondyle inwall.
8. dilator in knee joint according to claim 7, it is characterised in that the one of body (1) is strutted on described arc
The flat formation flat end (13) in end or two ends, described flat end (13) stretches out the end of knee joint fossa intercondyloidea.
9. dilator in the knee joint according to any one in claim 5-8, it is characterised in that supportted on described arc
Open and strutted under body (1) and arc between body (2) to be vertically arranged.
10. dilator in the knee joint according to any one in claim 5-8, it is characterised in that on described arc
Strut and body (2) is strutted under body (1) and arc be made of resin material, the modulus of elasticity of described resin material for meniscus or
0.1-2 times of person's articular cartilage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510731497.9A CN105310732B (en) | 2015-10-30 | 2015-10-30 | Dilator in knee joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510731497.9A CN105310732B (en) | 2015-10-30 | 2015-10-30 | Dilator in knee joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105310732A CN105310732A (en) | 2016-02-10 |
| CN105310732B true CN105310732B (en) | 2017-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510731497.9A Expired - Fee Related CN105310732B (en) | 2015-10-30 | 2015-10-30 | Dilator in knee joint |
Country Status (1)
| Country | Link |
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| CN (1) | CN105310732B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104367353A (en) * | 2014-11-14 | 2015-02-25 | 付奇伟 | Dilator in total knee arthroplasty |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4517965A (en) * | 1983-06-27 | 1985-05-21 | Ellison Arthur E | Tissue retractor |
| US6017305A (en) * | 1990-03-02 | 2000-01-25 | General Surgical Innovations, Inc. | Method of retracting bones |
| CN204655047U (en) * | 2015-05-08 | 2015-09-23 | 张家港市三兴医疗器械有限公司 | A kind of knee joint dilator |
| CN204708898U (en) * | 2015-05-08 | 2015-10-21 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of knee joint can measurement clearance dilator |
| CN205234545U (en) * | 2015-10-30 | 2016-05-18 | 杭州市萧山区第一人民医院 | Ware struts in knee joint |
-
2015
- 2015-10-30 CN CN201510731497.9A patent/CN105310732B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4517965A (en) * | 1983-06-27 | 1985-05-21 | Ellison Arthur E | Tissue retractor |
| US6017305A (en) * | 1990-03-02 | 2000-01-25 | General Surgical Innovations, Inc. | Method of retracting bones |
| CN204655047U (en) * | 2015-05-08 | 2015-09-23 | 张家港市三兴医疗器械有限公司 | A kind of knee joint dilator |
| CN204708898U (en) * | 2015-05-08 | 2015-10-21 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of knee joint can measurement clearance dilator |
| CN205234545U (en) * | 2015-10-30 | 2016-05-18 | 杭州市萧山区第一人民医院 | Ware struts in knee joint |
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| Publication number | Publication date |
|---|---|
| CN105310732A (en) | 2016-02-10 |
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