CN108309380A - A kind of knee space dilator - Google Patents
A kind of knee space dilator Download PDFInfo
- Publication number
- CN108309380A CN108309380A CN201810241696.5A CN201810241696A CN108309380A CN 108309380 A CN108309380 A CN 108309380A CN 201810241696 A CN201810241696 A CN 201810241696A CN 108309380 A CN108309380 A CN 108309380A
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- China
- Prior art keywords
- clamp handle
- dilator
- knee space
- disk
- left clamp
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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
- A61B17/02—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
- 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 junction setting of a kind of knee space dilator disclosed by the invention, including left clamp handle, middle clamp handle and right clamp handle, the left clamp handle and right clamp handle is fluted, and the middle clamp handle is embedded in right clamp handle, and right clamp handle is embedded in the groove of left clamp handle；The front end of the left clamp handle and middle clamp handle is provided with disk, and disk is in flexible movable angle with the plane at clamp handle riveting by rivet, the disk.A kind of knee space dilator provided by the invention, reasonable for structure, the fixation of disk has certain degree of freedom, flexibly ensure that freely be bonded for dilator and articular surface, increases distracted reliability, the risk of dilator disengaging in reduction art；Scale plate is set in middle clamp handle, distance is strutted with intuitively measure dilator；It is provided with elastic power table on dilator, can accurately measure the elastic power of dilator, grasps the ligament rate of tension of patient in real time, ensures the safety for the treatment of.
Description
Technical field
The present invention relates to the field of medical instrument technology more particularly to a kind of knee space dilators.
Background technology
Total knee arthroplasty (Total Knee Arthroplasty, TKA) has become late period degeneration Bones and joints
One of surgical intervention mode of the diseases such as inflammation, rheumatoid arthritis, ankylosing spondylitis.
In existing technology, space distraction device is used for bone and the inspection that struts of bone junction, common space distraction
Device, which generally only has, struts function, is mostly fixed angle with bone contact site, easy tos produce gap, causes to measure and be not allowed, is easy
There is slip phenomenon, affects procedure efficiency.
General dilator does not have measurement and struts range capability, or have the function of measurement strut spacing but measurement result not
Intuitively；General dilator does not have the measurement elastic power function of ligament after measurement struts, and the elastic power of ligament is to ligament in art
Elasticity is most important, directly influences postoperative walk of patient and restores.
Chinese patent Authorization Notice No.：CN204708898U, discloses a kind of knee at authorized announcement date on October 21st, 2015
Joint can measure space distraction device, it includes first strutting handle, second strutting handle, the first returning spring piece, the second reply
Spring leaf and the design for strutting locking bar composition.Its shortcoming is distraction forcep front end setting anti-slip protrusion but can not be with articular surface
It is freely bonded, measurement is caused deviation occur；And it is to be read not intuitive by locking bar to strutting clearance measurement；This gap is surveyed
Measuring device is unable to measure the ligament tightness for strutting gap.
Therefore, there is an urgent need for designing a kind of knee space dilator, problems of the prior art are solved.
Invention content
The purpose of the present invention is in view of the above technical problems, a kind of knee space dilator provided by the invention is tied
Structure is reasonable, and the fixation of disk has certain degree of freedom, flexibly ensure that freely being bonded for dilator and articular surface, increases
Distracted reliability reduces the risk that dilator is detached from art；Scale plate is set in middle clamp handle, intuitively to measure dilator
Strut distance；It is provided with elastic power table on dilator, can accurately measure the elastic power of dilator, grasps the ligament of patient in real time
Rate of tension ensures the safety for the treatment of.
Technical scheme of the present invention
In order to solve the above technical problems, a kind of knee space dilator provided by the invention, specifically include left clamp handle, in
The junction setting of clamp handle and right clamp handle, the left clamp handle and right clamp handle is fluted, and the middle clamp handle is embedded in right clamp handle, right
Clamp handle is embedded in the groove of left clamp handle；The front end of the left clamp handle and middle clamp handle is provided with disk, and disk is by rivet, circle
Disk is in flexible movable angle with the plane at clamp handle riveting.
In the application, the disk in left clamp handle and middle clamp handle front end is set and is flexibly riveted, in this way, disk can be with knee joint
Naturally it is bonded, effectively increases the contact area of the two, improve the fixed reliability of dilator, dilator is effectively prevent to perform the operation
It falls off in the process, ensures the safety of operation.The easy keeping parallelism of disk simultaneously, keeps distracted range measurement more accurate.
In some embodiments, the number of degrees of the flexible movable angle are 0-8 °.Disk is flexibly arranged, be effectively ensured disk with
Kneed contact area ensures distracted reliability.
In some embodiments, the number of degrees of the flexible movable angle are 0-5 °.It is adapted to kneed optimal angle, ensures circle
Disk and knee joint surface are freely bonded.
In some embodiments, the angle between the front end of the left clamp handle and middle clamp handle and corresponding clamp handle is 135 °.This
The front end flare of sample, left clamp handle and middle clamp handle so that jaw is located at operation wound dilator when in use, and whole clamp handle position
Above wound, facilitates in surgical and operate.
In some embodiments, the knee space dilator further includes scale plate, is arranged in right clamp handle hand-held part
Inside, the shape of scale plate is arc-shaped, is provided with graduation mark.Graduation mark on scale plate be through over-angle conversion and
, it can directly be read by opening angle and strut length accordingly, there is good intuitive.
In some embodiments, it is provided with U-type groove on the inside of the scale plate, compression spring, compression spring are provided in the U-type groove
One end withstands on the inside of right clamp handle, and the compression spring other end is scheduled on the tail end of middle clamp handle；Elastic power table is provided on the compression spring.This Shen
Please in, the tensile force for strutting ligament is measured by the compression degree of compression spring, in operation ligament adjusting reference is provided.
In some embodiments, the knee space dilator further includes spring leaf, is arranged in left clamp handle and middle pincers
Between handle；The spring leaf is fixed on the inside of left clamp handle hand-held part, is abutted against in the middle part of top and middle clamp handle.Spring leaf
Certain toughness can be provided for the clamping of left clamp handle and middle clamp handle by being arranged, and ensure the distracted reliability of dilator；And spring
Piece and compression spring comprehensive function, measure the tensile force on dilator.
In some embodiments, the knee space dilator further includes ratchet bar, and a left side is connected to by connecting pole
The tail end of clamp handle；The tail end shape of the right clamp handle matches setting with the shape of ratchet bar.In this way, can by the tail end of right clamp handle
With by dilator screens, keep dilator struts position and state.
Advantageous effect of the present invention：
A kind of knee space dilator provided by the invention, it is reasonable for structure, it has the following technical effects：
(1) fixation of disk has certain degree of freedom in the application, and dilator front end can be flexible, polygonal during surgery
Degree fitting patient articular face, increases contact area, increases distracted reliability, falls off to which increasing friction force reduces dilator
Risk；The easy keeping parallelism of disk simultaneously, keeps distracted range measurement more accurate.
(2) scale plate is set in clamp handle in the application, distance is strutted with intuitively measure dilator；
(3) elastic power table is provided in the application on dilator, can accurately measure the elastic power of dilator, is grasped in real time
The ligament rate of tension of patient ensures the safety for the treatment of.
Description of the drawings
By being described in detail made by conjunction with the following drawings, above-mentioned advantage of the invention will be apparent and be easier reason
Solution, these attached drawings are only schematical, are not intended to limit the present invention, wherein：
Fig. 1 is a kind of structural schematic diagram of knee space dilator of the present invention；
Fig. 2 is the structural schematic diagram of the left clamp handle of the present invention.
In attached drawing, the component representated by each label is as follows：
1. left clamp handle；Clamp handle in 2.；3. right clamp handle；4. disk；5. rivet；6. spring leaf；7. compression spring；8. ratchet bar；9.
Elastic power table；10. scale plate.
Specific implementation mode
Fig. 1, Fig. 2 are the relevant drawings of knee space dilator of the present invention, with reference to specific embodiment and attached
Figure, is described in detail the application.
The embodiment recorded herein is the specific specific implementation mode of the present invention, for illustrating design of the invention,
It is explanatory and illustrative, should not be construed as the limitation to embodiment of the present invention and the scope of the invention.Except what is recorded herein
Outside embodiment, those skilled in the art can also based on the application claims and specification disclosure of that using aobvious and
The other technical solutions being clear to, these technical solutions include any obvious using making for the embodiment to recording herein
The technical solution of substitutions and modifications.
The attached drawing of this specification is schematic diagram, aids in illustrating the design of the present invention, it is schematically indicated the shape of each section
And its correlation.It note that the structure of each component for the ease of clearly showing the embodiment of the present invention, identical reference
Label is for indicating identical part.
A kind of structural schematic diagram of knee space dilator shown in the application, as shown in Figure 1, it specifically includes left clamp handle
1, the junction setting of middle clamp handle 2 and right clamp handle 3, the left clamp handle 1 and right clamp handle 3 is fluted, and the middle clamp handle 2 is embedded in the right side
In clamp handle 3, right clamp handle 3 is embedded in the groove of left clamp handle 1；The front end of the left clamp handle 1 and middle clamp handle 2 is provided with disk 4, circle
Disk 4 is riveted by rivet 5, and the disk 4 is in flexible movable angle with the plane at clamp handle riveting.
In the application, left clamp handle 1, middle clamp handle 2 are connected by screw at 3 rotation connection of right clamp handle, left clamp handle 1 and right pincers
The reservation of 3 junction of handle is fluted, and middle clamp handle 2 is embedded in right clamp handle 3, while right clamp handle 3 is embedded in the groove of left clamp handle 1.
When dilator struts, distracted two faces need to be parallel, just distracted range measurement can be made more smart
Standard, if disk and no gap at clamp handle riveting, without mobility, then two disks cannot maintain parastate.Institute
In some embodiments, the disk 4 in 2 front end of left clamp handle 1 and middle clamp handle is arranged and is flexibly riveted with clamp handle, in this way, disk can
To be bonded naturally with knee joint, the contact area of the two is effectively increased, the fixed reliability of dilator is improved, effectively prevent supportting
It opens device to fall off in the course of surgery, ensures the safety of operation, therefore, in some embodiments, disk 4 is reserved in riveting point
One free travel, it is 0-8 ° to make the flexible movable angle of disk and the plane at clamp handle riveting, in preferred embodiment, the disk
It is 0-5 ° with the flexible movable angle of the plane at clamp handle riveting, disk 4 is flexibly arranged, and ensures freely being bonded for disk and articular surface,
Disk and kneed contact area are effectively increased, both dilator was effectively prevent to fall off in the course of surgery, while can be obtained
Obtain more accurately ranging effect.
Angle between the front end of the left clamp handle 1 and middle clamp handle 2 and corresponding clamp handle is 135 °, in this way, left clamp handle 1 and in
The front end flare of clamp handle 2 so that jaw is located at operation wound dilator when in use, and whole clamp handle is located above wound,
Facilitate in surgical and operates.
The knee space dilator further includes scale plate 10, and the inside in 3 hand-held part of right clamp handle, scale plate is arranged
10 shape is arc-shaped, is provided with graduation mark.Graduation mark on scale plate 10 is to convert and obtain through over-angle, by opening
Angle of release degree can directly be read struts length accordingly, has good intuitive.
The inside of the scale plate 10 is provided with U-type groove, and compression spring 7 is provided in the U-type groove, and 7 one end of compression spring withstands on the right side
The inside of clamp handle 3,7 other end of compression spring are scheduled on the tail end of middle clamp handle 2；Elastic power table 9 is provided on the compression spring 7.In the application,
The tensile force for strutting ligament is measured by the compression degree of compression spring, reference is provided to carry out ligament adjusting in operation in time.
The knee space dilator further includes spring leaf 6, is arranged between left clamp handle 1 and middle clamp handle 2；The bullet
Reed 6 is fixed on the inside of 1 hand-held part of left clamp handle, and top and the middle part of middle clamp handle 2 abut against.The setting of spring leaf can be
The clamping of left clamp handle and middle clamp handle provides certain toughness, ensures the distracted reliability of dilator；And spring leaf is comprehensive with compression spring
Cooperation is used, and the tensile force on dilator is measured.
The knee space dilator further includes ratchet bar 8, and the tail end of left clamp handle 1 is connected to by connecting pole；Institute
The tail end shape for stating right clamp handle 3 matches setting with the shape of ratchet bar 8.In this way, the tail end by right clamp handle can be by dilator
Screens, keep dilator struts position and state.
Doctor is hold by one hand the left clamp handle 1 of dilator and right clamp handle 3 during surgery, and finger inwardly holds fist and squeezes clamp handle, even
The place of connecing makes jaw open as fulcrum, and wherein articular surface comes into full contact with disk 4, and articular surface tensile force is by left clamp handle 1 in
The transmission of clamp handle 2 is respectively acting on spring leaf 6 and compression spring 7, and corresponding registration is shown on scale plate 10 and tensile force table 9,
With real-time instruction, doctor is operated accordingly.
Compared with prior art, a kind of knee space dilator provided by the invention, reasonable for structure, the fixation of disk
With certain degree of freedom, it flexibly ensure that freely being bonded for dilator and articular surface, increase distracted reliability, reduce
The risk that dilator is detached from art；Scale plate is set in middle clamp handle, the scale value of scale plate be by the opening angle of jaw and
The arc length trigonometric function conversion that jaw opens, can directly reflect dilator struts distance；It is arranged on dilator
There is elastic power table, can accurately measure the elastic power of dilator, grasp the ligament rate of tension of patient in real time, ensures the safety for the treatment of
Property.
The present invention is not limited to the above-described embodiments, anyone can obtain other various forms under the inspiration of the present invention
Product, it is every that there is technical side identical or similar to the present application however, make any variation in its shape or structure
Case is within the scope of the present invention.
Claims (8)
1. a kind of knee space dilator, which is characterized in that described including left clamp handle (1), middle clamp handle (2) and right clamp handle (3)
The setting of the junction of left clamp handle (1) and right clamp handle (3) is fluted, and the middle clamp handle (2) is embedded in right clamp handle (3), right clamp handle
(3) it is embedded in the groove of left clamp handle (1)；The front end of the left clamp handle (1) and middle clamp handle (2) is provided with disk (4), disk
(4) it is riveted by rivet (5), the disk (4) is in flexible movable angle with the plane at clamp handle riveting.
2. knee space dilator according to claim 1, which is characterized in that the number of degrees of the flexible movable angle are 0-8 °.
3. knee space dilator according to claim 2, which is characterized in that the number of degrees of the flexible movable angle are 0-5 °.
4. knee space dilator according to claim 1, which is characterized in that the left clamp handle (1) and middle clamp handle (2)
Angle between front end and corresponding clamp handle is 135 °.
5. knee space dilator according to claim 1, which is characterized in that the knee space dilator further includes
Scale plate (10) is arranged in the inside of right clamp handle (3) hand-held part, and the shape of scale plate (10) is arc-shaped, is provided with quarter
Spend line.
6. knee space dilator according to claim 5, which is characterized in that be provided on the inside of the scale plate (10)
U-type groove is provided with compression spring (7) in the U-type groove, and compression spring (7) one end withstands on the inside of right clamp handle (3), and compression spring (7) other end is fixed
Tail end in middle clamp handle (2)；Elastic power table (9) is provided on the compression spring (7).
7. knee space dilator according to claim 1, which is characterized in that the knee space dilator further includes
Spring leaf (6) is arranged between left clamp handle (1) and middle clamp handle (2)；The spring leaf (6) is fixed on left clamp handle (1) hand-held part
Inside, abut against in the middle part of top and middle clamp handle (2).
8. knee space dilator according to claim 1, which is characterized in that the knee space dilator further includes
Ratchet bar (8), the tail end of left clamp handle (1) is connected to by connecting pole；The tail end shape and ratchet bar of the right clamp handle (3)
(8) shape matching setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241696.5A CN108309380A (en) | 2018-03-22 | 2018-03-22 | A kind of knee space dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810241696.5A CN108309380A (en) | 2018-03-22 | 2018-03-22 | A kind of knee space dilator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108309380A true CN108309380A (en) | 2018-07-24 |
Family
ID=62898876
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810241696.5A Pending CN108309380A (en) | 2018-03-22 | 2018-03-22 | A kind of knee space dilator |
Country Status (1)
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| CN (1) | CN108309380A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009320A (en) * | 2018-08-08 | 2018-12-18 | 武汉拓思瑞医疗科技有限公司 | Knee osteotomy angle measurement unit |
| CN110882033A (en) * | 2019-11-25 | 2020-03-17 | 山东大学 | Surgical tool for measuring force and distance |
| CN111714166A (en) * | 2020-06-02 | 2020-09-29 | 柴瑞宝 | Multi-functional caliber that struts of orthopedics |
| CN116509564A (en) * | 2022-01-24 | 2023-08-01 | 北京和华瑞博医疗科技有限公司 | Joint angle measuring device |
| CN116509399A (en) * | 2022-01-24 | 2023-08-01 | 北京和华瑞博医疗科技有限公司 | Joint tension measuring device |
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| US6648896B2 (en) * | 2001-03-29 | 2003-11-18 | Sulzer Orthopedics Ltd. | Spreader apparatus for knee joints |
| US20090198240A1 (en) * | 2008-01-31 | 2009-08-06 | Kaufman David L | Femoral Tibial Spreader with Tensor Measurement |
| US20090270869A1 (en) * | 2005-09-30 | 2009-10-29 | Callum Colquhoun | Distractor instrument |
| 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 |
| CN205548599U (en) * | 2016-01-21 | 2016-09-07 | 北京积水潭医院 | Clearance of taking measuring force device struts ware |
| CN206424109U (en) * | 2016-11-14 | 2017-08-22 | 徐威 | A kind of movable drag hook skin dilator |
| CN208822843U (en) * | 2018-03-22 | 2019-05-07 | 中国人民解放军总医院 | A kind of knee space dilator |
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2018
- 2018-03-22 CN CN201810241696.5A patent/CN108309380A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6648896B2 (en) * | 2001-03-29 | 2003-11-18 | Sulzer Orthopedics Ltd. | Spreader apparatus for knee joints |
| US20090270869A1 (en) * | 2005-09-30 | 2009-10-29 | Callum Colquhoun | Distractor instrument |
| US20090198240A1 (en) * | 2008-01-31 | 2009-08-06 | Kaufman David L | Femoral Tibial Spreader with Tensor Measurement |
| 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 |
| CN205548599U (en) * | 2016-01-21 | 2016-09-07 | 北京积水潭医院 | Clearance of taking measuring force device struts ware |
| CN206424109U (en) * | 2016-11-14 | 2017-08-22 | 徐威 | A kind of movable drag hook skin dilator |
| CN208822843U (en) * | 2018-03-22 | 2019-05-07 | 中国人民解放军总医院 | A kind of knee space dilator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009320A (en) * | 2018-08-08 | 2018-12-18 | 武汉拓思瑞医疗科技有限公司 | Knee osteotomy angle measurement unit |
| CN109009320B (en) * | 2018-08-08 | 2021-07-27 | 武汉拓思瑞医疗科技有限公司 | Knee joint osteotomy angle measuring device |
| CN110882033A (en) * | 2019-11-25 | 2020-03-17 | 山东大学 | Surgical tool for measuring force and distance |
| CN110882033B (en) * | 2019-11-25 | 2020-10-27 | 山东大学 | Surgical tool for measuring force and distance |
| CN111714166A (en) * | 2020-06-02 | 2020-09-29 | 柴瑞宝 | Multi-functional caliber that struts of orthopedics |
| CN111714166B (en) * | 2020-06-02 | 2022-09-27 | 柴瑞宝 | Multi-functional caliber that struts of orthopedics |
| CN116509564A (en) * | 2022-01-24 | 2023-08-01 | 北京和华瑞博医疗科技有限公司 | Joint angle measuring device |
| CN116509399A (en) * | 2022-01-24 | 2023-08-01 | 北京和华瑞博医疗科技有限公司 | Joint tension measuring device |
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Application publication date: 20180724 |