CN105310732A - Internal spreader for knee joints - Google Patents
Internal spreader for knee joints Download PDFInfo
- Publication number
- CN105310732A CN105310732A CN201510731497.9A CN201510731497A CN105310732A CN 105310732 A CN105310732 A CN 105310732A CN 201510731497 A CN201510731497 A CN 201510731497A CN 105310732 A CN105310732 A CN 105310732A
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- CN
- China
- Prior art keywords
- knee joint
- arc
- foot
- dilator
- condyle
- 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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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
Abstract
The invention belongs to the technical field of medical instruments and particularly relates to an internal spreader for knee joints. The internal spreader comprises an upper arc-shaped spreading body matched with the fossa intercondyloidea of the knee joints and a lower arc-shaped spreading body matched with the intercondylar eminence of the knee joints, wherein the middles of the upper arc-shaped spreading body and the middle of the lower arc-shaped spreading body are in cross connection. When the internal spreader for the knee joints is placed between the fossa intercondyloidea and the intercondylar eminence of the knee joints and the knee joints are in the straightened state, rear-end clearances at the fossa intercondyloidea and the intercondylar eminence of the knee joints are spread. The internal spreader has the following advantages: spreading of the knee joints are carried out in the knee joint straightening process by virtue of size changes of the clearances in the knee joint flexion and extension process, and the rear inside clearances are opened to increase the exposing range of the meniscus, so that convenience is brought for related persons to perform arthroscopy observation and instrument operation on the posterior horn of the meniscus medialis.
Description
Technical field
The invention belongs to technical field of medical instruments, especially relate to dilator in a kind of knee joint.
Background technology
At present, when arthroscopy of knee and treatment, joint space is opened mainly through the knee joint stress that turns up, but medial angle is close to joint center line after medial meniscus, even if medial gap is enough large, rear medial angle cannot well appear, as the damage that excessively may cause medial collateral ligament of turning up, in addition, because medial meniscus relief angle anatomical position is very special, related personnel is caused to be difficult to carry out arthroscope observation and instrumentation to it, also cannot adopt conventional meniscus repair sewing method due to medial meniscus relief angle thus cause related personnel's abandoning cure, formed " technical ignore ", after finally making medial meniscus repair, healing is poorer than lateral meniscus healing.
In order to improve prior art, people have carried out long-term exploration, propose various solution.Such as, Chinese patent literature discloses a kind of knee joint dilator [application number: CN201520291895.9], comprise left clamp handle, the right clamp handle hinged with described left clamp handle, described left clamp handle and described right clamp handle head are all fixed with the binding clip of inclination, spring assembly is provided with between described left clamp handle and described right clamp handle, latch components is provided with between described left clamp handle afterbody and described right clamp handle afterbody, it is characterized in that, described spring assembly comprises the left spring sheet be connected with described left clamp handle, the right spring leaf be connected with described right clamp handle, described right spring leaf head is connected with described left spring sheet head, described binding clip head is provided with distraction plate, described distraction plate width is greater than described binding clip width, distraction surface outside described distraction plate is provided with V-arrangement anti-slip veins, described V-arrangement anti-slip veins is wide towards distraction plate afterbody side towards distraction plate head side face width of tooth more described V-arrangement anti-slip veins, and described V-arrangement anti-slip veins tilts to extend from distraction plate two side direction distraction plate head center direction, described distraction plate is also provided with the outage for discharge opeing, described outage is communicated with the medial surface of distraction surface and distraction plate.
Although such scheme to some extent solves the deficiencies in the prior art, can not increase meniscus range of exposure, can not reduce cartilage and meniscal damage, related personnel is still difficult to carry out arthroscope observation and instrumentation to medial meniscus relief angle.
Summary of the invention
The object of the invention is for the problems referred to above, provide a kind of reasonable in design, structure is simple, dilator in the knee joint strutting knee space in being beneficial to.
For achieving the above object, present invention employs following technical proposal: dilator in this knee joint, it is characterized in that, body is strutted under comprising the arc arc that matches with knee joint intercondylar fossa strutting body and match with ridge between condyle, strut the middle part interconnection of body under described arc strutting body and arc, the backend space being positioned at ridge rear end between knee joint intercondylar fossa and condyle when dilator in this knee joint to be placed between knee joint intercondylar fossa and condyle between ridge and knee joint is in straight configuration is softened.
By knee sprung, the front space put into for dilator in this knee joint is formed between ridge between knee joint intercondylar fossa and condyle, arc strutting body to be placed between knee joint intercondylar fossa and condyle between ridge, the outer support foot strutting body under arc is inserted in lateral condyle, the inner support foot strutting body under arc is inserted in medial condyle, and between condyle, ridge is inserted into inner groovy; Knee joint stretched, the backend space being positioned at ridge rear end between knee joint intercondylar fossa and condyle is softened.The application utilizes knee joint in the change of bending and stretching process intermediate gap size, in knee joint straightening procedure, carry out knee joint strut, open rear medial gap, increase meniscus range of exposure, facilitate related personnel to carry out arthroscope observation and instrumentation to medial meniscus relief angle.
In above-mentioned knee joint in dilator, the downward indent in top described arc strutting body forms the inner recess matched with knee joint intercondylar fossa, struts the bottom inner groovy that upwards between indent formation confession condyle, ridge inserts of body under described arc.Inner recess matches with knee joint intercondylar fossa, and between inner groovy and condyle, ridge matches, and is beneficial to dilator fixing between knee joint in knee joint.
In above-mentioned knee joint in dilator, described arc strutting body is to be obliquely installed and front end arc strutting body is inclined upwardly.Form little triangle gap, large rear end, front end when knee joint bending, arc struts body and be obliquely installed and be beneficial to putting into of dilator in this knee joint.
In above-mentioned knee joint in dilator, strut under described arc body comprise be fixed on arc struts side in the middle part of body and the outer support foot adapted with lateral condyle and be fixed on arc struts opposite side in the middle part of body and with the inner support foot that medial condyle adapts, formed between described outer support foot and inner support foot and inner groovy that between condyle, ridge adapts.Outer support foot and inner support foot lay respectively at both sides, and supportive is good.
In above-mentioned knee joint in dilator, the lower end bifurcated of described outer support foot forms front outer support and divides foot and rear outer support to divide foot, and the lower end bifurcated of described inner support foot forms front inner support and divides foot and rear inner support to divide foot.Front outer support divides foot, rear outer support divides foot, front inner support divides foot and rear inner support divides foot to be distributed in four bights, and supportive is good.
In above-mentioned knee joint in dilator, described front outer support divide foot and rear outer support divide the lower end of foot expand formed transverse horizontal arrange the first locating piece, lower surface and the lateral condyle inwall of the first described locating piece fit.
In above-mentioned knee joint in dilator, described front inner support divide foot and rear inner support divide the lower end of foot expand formed transverse horizontal arrange the second locating piece, lower surface and the medial condyle inwall of the second described locating piece fit.
In above-mentioned knee joint in dilator, described arc struts the flat formation flat end in one end or two ends of body, described flat end stretches out the end of knee joint intercondylar fossa.
In above-mentioned knee joint in dilator, it is characterized in that, strut under described arc strutting body and arc between body and arrange for vertical.
In above-mentioned knee joint in dilator, strut body and adopt resin material to make under described arc strutting body and arc, the elastic modelling quantity of described resin material is 0.1-2 times of meniscus or articular cartilage.This knee joint dilator designs according to intercondylar fossa feature, select that firmness is good, elastic modelling quantity and meniscus or the close resin material of articular cartilage make, make the matching degree in dilator and joint in knee joint high by the utilization of 3D technology, cartilage and meniscal damage can be reduced.
Compared with prior art, in this knee joint, the advantage of dilator is:
One, the application utilizes knee joint in the change of bending and stretching process intermediate gap size, carries out knee joint and struts, open rear medial gap in knee joint straightening procedure, increase meniscus range of exposure, facilitate related personnel to carry out arthroscope observation and instrumentation to medial meniscus relief angle.
Its two, inner recess matches with knee joint intercondylar fossa, and between inner groovy and condyle, ridge matches, and is beneficial to fixing between knee joint of dilator in knee joint.
Its three, form little triangle gap, large rear end, front end when knee joint bending, arc strut body and be obliquely installed and be beneficial to putting into of dilator in this knee joint.Front outer support divides foot, rear outer support divides foot, front inner support divides foot and rear inner support divides foot to be distributed in four bights, and supportive is good.
They are four years old, this knee joint dilator designs according to intercondylar fossa feature, select that firmness is good, resin material that elastic modelling quantity and meniscus, articular cartilage are close makes, make the matching degree in dilator and joint in knee joint high by the utilization of 3D technology, cartilage and meniscal damage can be reduced.
Accompanying drawing explanation
Fig. 1 is structural representation provided by the invention.
In figure, strut body 2, inner recess 3, inner groovy 4, outer support foot 5, inner support foot 6 under arc strutting body 1, arc, front outer support divides foot 7, rear outer support divides foot 8, front inner support divides foot 9, rear inner support divides foot 10, first locating piece 11, second locating piece 12, flat end 13.
Detailed description of the invention
Embodiment
As shown in Figure 1, in this knee joint, dilator struts body 2 under comprising the arc arc that matches with knee joint intercondylar fossa strutting body 1 and match with ridge between condyle, strut the middle part interconnection of body 2 under arc strutting body 1 and arc, the backend space being positioned at ridge rear end between knee joint intercondylar fossa and condyle when dilator in this knee joint to be placed between knee joint intercondylar fossa and condyle between ridge and knee joint is in straight configuration is softened.First by knee sprung during use, the front space put into for dilator in this knee joint is formed between ridge between knee joint intercondylar fossa and condyle, arc strutting body 1 to be placed between knee joint intercondylar fossa and condyle between ridge, the outer support foot 5 strutting body 2 under arc is inserted in lateral condyle, the inner support foot 6 strutting body 2 under arc is inserted in medial condyle, and between condyle, ridge is inserted into inner groovy; Knee joint stretched, the backend space being positioned at ridge rear end between knee joint intercondylar fossa and condyle is softened.The application utilizes knee joint in the change of bending and stretching process intermediate gap size, in knee joint straightening procedure, carry out knee joint strut, open rear medial gap, increase meniscus range of exposure, facilitate related personnel to carry out arthroscope observation and instrumentation to medial meniscus relief angle.
Wherein, the downward indent in top arc strutting body 1 forms the inner recess 3 matched with knee joint intercondylar fossa, the bottom inner groovy 4 that upwards between indent formation confession condyle, ridge inserts of body 2 is strutted under arc, inner recess 3 matches with knee joint intercondylar fossa, between inner groovy 4 and condyle, ridge matches, and is beneficial to dilator fixing between knee joint in knee joint.
Arc struts body 1 for be obliquely installed and front end arc strutting body 1 is inclined upwardly, form little triangle gap, large rear end, front end when knee joint bending, arc struts body 1 and be obliquely installed and be beneficial to putting into of dilator in this knee joint.
Strut under arc body 2 comprise be fixed on arc struts side in the middle part of body 1 and the outer support foot 5 adapted with lateral condyle and be fixed on arc struts opposite side in the middle part of body 1 and with the inner support foot 6 that medial condyle adapts, formed between outer support foot 5 and inner support foot 6 and inner groovy 4 that between condyle, ridge adapts.
Wherein, the lower end bifurcated of outer support foot 5 forms front outer support and divides foot 7 and rear outer support to divide foot 8, the lower end bifurcated of inner support foot 6 forms front inner support and divides foot 9 and rear inner support to divide foot 10, front outer support divides foot 7, rear outer support divides foot 8, front inner support divides foot 9 and rear inner support divides foot 10 to be distributed in four bights, and supportive is good.
Front outer support divide foot 7 and rear outer support divide the lower end of foot 8 expand formed transverse horizontal arrange the first locating piece 11, lower surface and the lateral condyle inwall of the first locating piece 11 fit, the lower surface of the second locating piece 12, second locating piece 12 that front inner support divides foot 9 and rear inner support to divide the lower end of foot 10 to expand the setting of formation transverse horizontal and medial condyle inwall fit.
Wherein, arc struts the flat formation flat end 13 in one end or two ends of body 1, flat end 13 stretches out the end of knee joint intercondylar fossa, strut under arc strutting body 1 and arc between body 2 and arrange for vertical, strutting body 2 under arc strutting body 1 and arc adopts resin material to make, and the elastic modelling quantity of resin material is 0.1-2 times of meniscus or articular cartilage.This knee joint dilator designs according to intercondylar fossa feature, select that firmness is good, elastic modelling quantity and meniscus or the close resin material of articular cartilage make, make the matching degree in dilator and joint in knee joint high by the utilization of 3D technology, cartilage and meniscal damage can be reduced.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Although more employ under arc strutting body 1, arc and strut body 2, inner recess 3, inner groovy 4, outer support foot 5, inner support foot 6, front outer support divides foot 7, rear outer support divides foot 8, front inner support divides foot 9, rear inner support divides the terms such as foot 10, first locating piece 11, second locating piece 12, flat end 13, do not get rid of the probability using other term herein.These terms are used to be only used to describe and explain essence of the present invention more easily; The restriction that they are construed to any one additional is all contrary with spirit of the present invention.
Claims (10)
1. dilator in a knee joint, it is characterized in that, body (2) is strutted under comprising the arc arc that matches with knee joint intercondylar fossa strutting body (1) and match with ridge between condyle, strut the middle part interconnection of body (2) under described arc strutting body (1) and arc, the backend space being positioned at ridge rear end between knee joint intercondylar fossa and condyle when dilator in this knee joint to be placed between knee joint intercondylar fossa and condyle between ridge and knee joint is in straight configuration is softened.
2. dilator in knee joint according to claim 1, it is characterized in that, the downward indent in top described arc strutting body (1) forms the inner recess (3) matched with knee joint intercondylar fossa, struts the bottom inner groovy (4) that upwards between indent formation confession condyle, ridge inserts of body (2) under described arc.
3. dilator in knee joint according to claim 2, is characterized in that, described arc struts body (1) for be obliquely installed and front end arc strutting body (1) is inclined upwardly.
4. dilator in the knee joint according to claim 1 or 2 or 3, it is characterized in that, strut body (2) under described arc to comprise being fixed on and arc struts body (1) side, middle part and the outer support foot (5) adapted with lateral condyle and be fixed on and arc strut body (1) middle part opposite side and the inner support foot (6) adapted with medial condyle, the inner groovy (4) that between described outer support foot (5) and inner support foot (6), between formation and condyle, ridge adapts.
5. dilator in knee joint according to claim 4, it is characterized in that, the lower end bifurcated of described outer support foot (5) forms front outer support and divides foot (7) and rear outer support to divide foot (8), and the lower end bifurcated of described inner support foot (6) forms front inner support and divides foot (9) and rear inner support to divide foot (10).
6. dilator in knee joint according to claim 5, it is characterized in that, described front outer support divide foot (7) and rear outer support divide the lower end of foot (8) expand formed transverse horizontal arrange the first locating piece (11), lower surface and the lateral condyle inwall of described the first locating piece (11) fit.
7. dilator in knee joint according to claim 5, it is characterized in that, described front inner support divide foot (9) and rear inner support divide the lower end of foot (10) expand formed transverse horizontal arrange the second locating piece (12), lower surface and the medial condyle inwall of described the second locating piece (12) fit.
8. dilator in knee joint according to claim 7, it is characterized in that, described arc struts the flat formation flat end (13) in one end or two ends of body (1), described flat end (13) stretches out the end of knee joint intercondylar fossa.
9. according to dilator in the knee joint in claim 5-8 described in any one, it is characterized in that, strut under described arc strutting body (1) and arc between body (2) and arrange for vertical.
10. according to dilator in the knee joint in claim 5-8 described in any one, it is characterized in that, strutting body (2) under described arc strutting body (1) and arc adopts resin material to make, and the elastic modelling quantity of described resin material is 0.1-2 times of meniscus or 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 true CN105310732A (en) | 2016-02-10 |
| CN105310732B 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 |
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| Country | Link |
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| CN (1) | CN105310732B (en) |
Cited By (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 |
Cited By (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 |
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| Publication number | Publication date |
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| CN105310732B (en) | 2017-10-03 |
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