CN208822843U - A kind of knee space dilator - Google Patents
A kind of knee space dilator Download PDFInfo
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- CN208822843U CN208822843U CN201820394698.3U CN201820394698U CN208822843U CN 208822843 U CN208822843 U CN 208822843U CN 201820394698 U CN201820394698 U CN 201820394698U CN 208822843 U CN208822843 U CN 208822843U
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- clamp handle
- dilator
- knee space
- disk
- handle
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Abstract
The junction setting of a kind of knee space dilator disclosed by the utility model, 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 utility model, structurally reasonable, the fixation of disk has certain freedom degree, 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, struts distance 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, guarantees the safety for the treatment of.
Description
Technical field
The utility model relates to the field of medical instrument technology more particularly to a kind of knee space dilators.
Background technique
Total knee arthroplasty (Total Knee Arthroplasty, TKA) has become advanced stage 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 the inspection that struts of bone and bone junction, common space distraction
Device, which generally only has, struts function, is mostly fixed angle with bone contact site, is easy to produce gap, causes measurement inaccurate, is easy
There is slip phenomenon, affects procedure efficiency.
General dilator does not have measurement and struts range capability, or has the function of that measurement struts 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, authorized announcement date on October 21st, 2015, a kind of knee is disclosed
Joint can measure space distraction device, it include first strut handle, second strut handle, the first returning spring piece, 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；It and is to be read not intuitive by locking bar to clearance measurement is strutted；This gap is surveyed
Measuring device is unable to measure the ligament tightness for strutting gap.
Therefore, it needs to design a kind of knee space dilator, solves problems of the prior art.
Utility model content
The purpose of this utility model is that in view of the above technical problems, a kind of knee space provided by the utility model struts
Device, structurally reasonable, the fixation of disk has certain freedom degree, flexibly ensure that freely pasting for dilator and articular surface
It closes, increases distracted reliability, reduce the risk that dilator is detached from art；Scale plate is set in middle clamp handle, intuitively to survey
Amount dilator struts distance；It is provided with elastic power table on dilator, can accurately measure the elastic power of dilator, grasps in real time
The ligament rate of tension of patient guarantees the safety for the treatment of.
The technical solution of the utility model
In order to solve the above technical problems, a kind of knee space dilator provided by the utility model, specifically includes left pincers
The junction setting of 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
Interior, 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 riveting
It connects, the plane at disk and clamp handle riveting is in flexible movable angle.
In the application, the disk that left clamp handle and middle clamp handle front end is arranged in flexibly is 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, guarantees the safety of operation.The easy keeping parallelism of disk simultaneously, keeps distracted range measurement more accurate.
In some embodiments, the degree of the flexible movable angle is 0-8 °.Disk flexible setting, be effectively ensured disk with
Kneed contact area guarantees distracted reliability.
In some embodiments, the degree of the flexible movable angle is 0-5 °.It is adapted to kneed optimal angle, guarantees 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, pressure spring, pressure spring are provided in the U-type groove
One end withstands on the inside of right clamp handle, and the pressure spring other end is scheduled on the tail end of middle clamp handle；Elastic power table is provided on the pressure spring.This Shen
Please in, the tensile force for strutting ligament is measured by the compression degree of pressure spring, for operation in 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, abuts 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 guarantee the distracted reliability of dilator；And spring
Piece and pressure spring comprehensive function measure the tensile force on dilator.
In some embodiments, the knee space dilator further includes ratchet bar, is connected to a left side by connecting column
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 detent, keep dilator struts position and state.
The utility model the utility model has the advantages that
A kind of knee space dilator provided by the utility model, it is structurally reasonable, it has following technical effect that
(1) fixation of disk has certain freedom degree 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 so that 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, struts distance 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 guarantees the safety for the treatment of.
Detailed description of the invention
It will be apparent and more hold by made detailed description, the above-mentioned advantage of the utility model in conjunction with the following drawings
Readily understood, these attached drawings are only schematical, are not intended to limit the utility model, in which:
Fig. 1 is a kind of structural schematic diagram of knee space dilator described in the utility model；
Fig. 2 is the structural schematic diagram of the left clamp handle of the utility model.
In attached drawing, 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. pressure spring；8. ratchet bar；9.
Elastic power table；10. scale plate.
Specific embodiment
Fig. 1, Fig. 2 are the relevant drawings of knee space dilator described in the utility model, combined with specific embodiments below
And attached drawing, the application is described in detail.
The embodiment recorded herein is the specific specific embodiment of the utility model, for illustrating the utility model
Design, be it is explanatory and illustrative, should not be construed as the limit to the utility model embodiment and the scope of the utility model
System.In addition to the embodiment recorded herein, those skilled in the art can also be public based on the claim of this application book and specification institute
For the content opened using obvious other technical solutions, these technical solutions include using doing to the embodiment recorded herein
The technical solution of any obvious substitutions and modifications out.
The attached drawing of this specification is schematic diagram, aids in illustrating the design of the utility model, it is schematically indicated each section
Shape and its correlation.It note that for the ease of clearly showing the structure of each component of the utility model embodiment, phase
Same reference marker 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 be it is parallel, just distracted range measurement can be made more smart
Standard, if no gap at disk and clamp handle riveting, without mobility, then two disks cannot maintain parastate.Institute
With in some embodiments, the disk 4 that 2 front end of left clamp handle 1 and middle clamp handle is arranged in flexibly is 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, guarantees the safety of operation, therefore, in some embodiments, disk 4 is reserved in riveting point
One free travel, makes 0-8 ° of flexible movable angle of the plane at disk and clamp handle riveting, in preferred embodiment, the disk
It is 0-5 ° with the flexible movable angle of the plane at clamp handle riveting, 4 flexible setting of disk guarantees 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 accurate 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 of right 3 hand-held part of clamp handle, scale plate is arranged in
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, which can directly be read, struts length accordingly, has good intuitive.
The inside of the scale plate 10 is provided with U-type groove, and pressure spring 7 is provided in the U-type groove, and 7 one end of pressure spring withstands on the right side
The inside of clamp handle 3,7 other end of pressure spring are scheduled on the tail end of middle clamp handle 2；Elastic power table 9 is provided on the pressure spring 7.In the application,
The tensile force for strutting ligament is measured by the compression degree of pressure spring, provides reference 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 left 1 hand-held part of 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, guarantees the distracted reliability of dilator；And spring leaf is comprehensive with pressure 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 column；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
Detent, 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 opens jaw 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 transmitting of clamp handle 2 is respectively acting on spring leaf 6 and pressure spring 7, and corresponding registration is shown on scale plate 10 and tensile force table 9,
Corresponding operation is carried out with real-time instruction doctor.
Compared with prior art, a kind of knee space dilator provided by the utility model, it is structurally reasonable, disk
It is fixed that there is certain freedom degree, 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, and the scale value of scale plate is the open-angle by jaw
The arc length trigonometric function conversion that degree and jaw open, can directly reflect dilator struts distance；On dilator
It is provided with elastic power table, can accurately measure the elastic power of dilator, grasps the ligament rate of tension of patient in real time, guarantees treatment
Safety.
The utility model is not limited to above embodiment, anyone can obtain other under the enlightenment of the utility model
Various forms of products, however, make any variation in its shape or structure, it is all with identical or similar to the present application
Technical solution, all fall within the protection scope of the utility model.
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 plane at the disk (4) and clamp handle riveting is in flexible movable angle.
2. knee space dilator according to claim 1, which is characterized in that the degree of the flexible movable angle is 0-8 °.
3. knee space dilator according to claim 2, which is characterized in that the degree of the flexible movable angle is 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 pressure spring (7) in the U-type groove, and pressure spring (7) one end withstands on the inside of right clamp handle (3), and pressure spring (7) other end is fixed
Tail end in middle clamp handle (2)；Elastic power table (9) is provided on the pressure 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 column；The tail end shape and ratchet bar of the right clamp handle (3)
(8) shape matches setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394698.3U CN208822843U (en) | 2018-03-22 | 2018-03-22 | A kind of knee space dilator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820394698.3U CN208822843U (en) | 2018-03-22 | 2018-03-22 | A kind of knee space dilator |
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| Publication Number | Publication Date |
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| CN208822843U true CN208822843U (en) | 2019-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820394698.3U Active CN208822843U (en) | 2018-03-22 | 2018-03-22 | A kind of knee space dilator |
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| CN (1) | CN208822843U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309380A (en) * | 2018-03-22 | 2018-07-24 | 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 CN201820394698.3U patent/CN208822843U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108309380A (en) * | 2018-03-22 | 2018-07-24 | 中国人民解放军总医院 | A kind of knee space dilator |
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