CN107693065A - Knee space retractor - Google Patents
Knee space retractor Download PDFInfo
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- CN107693065A CN107693065A CN201711083446.5A CN201711083446A CN107693065A CN 107693065 A CN107693065 A CN 107693065A CN 201711083446 A CN201711083446 A CN 201711083446A CN 107693065 A CN107693065 A CN 107693065A
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- command
- connecting rod
- knee space
- transmission member
- force transmission
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- 210000003127 knee Anatomy 0.000 title claims abstract description 82
- 230000005540 biological transmission Effects 0.000 claims abstract description 73
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 27
- 210000002303 tibia Anatomy 0.000 claims abstract description 9
- 210000000689 upper leg Anatomy 0.000 claims abstract description 9
- 230000007246 mechanism Effects 0.000 claims description 17
- 241001227561 Valgus Species 0.000 claims description 7
- 210000000629 knee joint Anatomy 0.000 abstract description 24
- 210000004872 soft tissue Anatomy 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000013150 knee replacement Methods 0.000 description 4
- 210000003041 ligament Anatomy 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000001356 surgical procedure Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002316 cosmetic surgery Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035790 physiological processes and functions Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/107—Measuring physical dimensions, e.g. size of the entire body or parts thereof
- A61B5/1072—Measuring physical dimensions, e.g. size of the entire body or parts thereof measuring distances on the body, e.g. measuring length, height or thickness
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Transplantation (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Physical Education & Sports Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Dentistry (AREA)
- Cardiology (AREA)
- Vascular Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
Abstract
This application provides a kind of knee space retractor, including：Pedestal；Post, it vertically extends from pedestal and firmly fixed with pedestal；The first in command, it, which regularly couples or formed with pedestal, is integrated；The second in command, it is in the top of the first in command and can slided along post；First struts part, and it is used for the osteotomy surface for the distal femur for contacting patient；And second strut part, it is used for the osteotomy surface for the proximal tibia for contacting patient, and removably couples with the second in command；Wherein, in addition to：Force transmission member, it is in the top of the second in command and can slided along post, and first struts part and removably couple with force transmission member；And spring, it extends between pedestal and force transmission member along post.The application can realize that measuring tough tensile force of belt and knee joint in real time struts gap using spring, and accurate force value is shown, and doctor has direct hand to feel to tough tensile force of belt size, simple operation, strut mode simply, efficiently.
Description
Technical field
The application is related to the medicine equipment for bone surgery, more particularly to a kind of knee being used in knee replacements closes
Internode gap retractor.
Background technology
Total knee replacement is a kind of kneed using bioartificial materials' displacement human lesion knee joint, recovery
The plastic surgery operations of normal physiological function.In operation, doctor, which needs to carry out the knee joint of patient to characterize osteotomy, to go forward side by side
Row soft tissue balance art, to match artificial knee joint prosthesis, recover optimal knee joint stable form.
After to proximal tibia, distal femur osteotomy, generally existed with gap cushion block die trial or Template measurement knee joint
Stretch the gap of position and flexing position and tough tensile force of belt.Doctor is according to the kneed illness of sufferer to knee space and tough tensile force of belt
It is adjusted, to help to rebuild natural joint face and obtain the correct lower limb line of force, recovers knee ligament balance and ensure people
The stability in work joint.In general, doctor directly to determine that knee joint struts gap and tough with knee space retractor
Tensile force of belt, with aided assessment knee osteotomy amount and carry out soft tissue balance art.
Retractor being used in current knee replacements, can completing similar functions is broadly divided into two types：It is active
Type and passive.Active type retractor detects tough tensile force of belt by electric signal or measurement knee joint struts gap.Due to introducing
Power supply, II class apparatuses that active type retractor belongs in medicine equipment, moderate risk be present, it is necessary to which strict control is to ensure it
Security, validity, so the production cost of such product is generally higher.Passive retractor is strutted by the way of mechanical energy
Knee space, belong to I class apparatuses, need Routine Management control to ensure its security, validity, and its production cost is relative
Low, stability is higher.
However, current passive retractor normally only includes strutting between knee joint of needing to realize in knee replacements
Gap, obtain tough tensile force of belt and judge the partial function in knee joint in the function such as valgus angle, and complex operation be present, apparatus is set
Meter does not consider kneed physiological structure, appliance function only for unilateral knee joint or obtains the defects of data are not direct, Yi Zao
Judge equivalent risk into delay operating time, influence doctor.Further, since need to match the demand of left and right knee and design a variety of
Weapon's standard can also increase processing cost, cost of transportation and management cost.
Therefore, it is necessary to a kind of accurate knee space retractor of multi-functional, easy to use and indicating value.
The content of the invention
The purpose of the application be in order to overcome at least one or more problem present in existing knee space retractor,
A kind of improved knee space retractor is proposed, it can provide more functions, and easy to use.
Therefore, the one side according to the application, there is provided a kind of knee space retractor, including：
Pedestal；
Post, the post vertically extend from the pedestal and firmly fixed with the pedestal；
The first in command, the first in command, which regularly couples or formed with the pedestal, to be integrated；
The second in command, the second in command are in the top of the first in command and can slided along the post；
First struts part, and described first struts the osteotomy surface that part is used to contact the distal femur of patient；And
Second struts part, and described second struts the osteotomy surface that part is used to contact the proximal tibia of the patient, and with
The second in command removably couples；
Wherein, the knee space retractor also includes：
Force transmission member, the force transmission member are in the top of the second in command and can slided along the post,
And described first struts part and removably couples with the force transmission member；With
Spring, the spring extend between the pedestal and the force transmission member along the post.
Preferably, the knee space retractor also includes the first parallel transmission mechanism, the first parallel transmission machine
Structure includes at least one pair of connecting rod, and at least one pair of described connecting rod includes the first connecting rod and second connecting rod of equal length, and described first
Connecting rod and the second connecting rod be hinged in midpoint, and the same side the first connecting rod one end and the second connecting rod
One end is respectively hinged on the first in command and the second in command, the other end and institute in the first connecting rod of opposite side
The other end for stating second connecting rod is respectively slidably hinged in the chute of the second in command and the chute of the first in command,
And it is provided with the midpoint to make the torsion spring or spring leaf that the first in command and the second in command tend to separate out out.
Preferably, the knee space retractor also includes the second parallel transmission mechanism, the second parallel transmission machine
Structure includes at least one pair of connecting rod, and at least one pair of described connecting rod includes the third connecting rod and fourth link of equal length, and the described 3rd
Connecting rod and the fourth link be hinged in midpoint, and the same side the third connecting rod one end and the fourth link
One end is respectively hinged on the second in command and the force transmission member, opposite side the third connecting rod the other end and
The other end of the fourth link is respectively slidably hinged on the chute of the force transmission member and the cunning of the second in command
In groove, and be provided with the midpoint to make the second in command and torsion spring that the force transmission member tends to separate out out or
Spring leaf.
Preferably, the knee space retractor also includes strutting gap registration scale, described to strut gap registration mark
Chi is arranged on the force transmission member or the second in command.
Preferably, the knee space retractor also includes gap locking member, and the gap locking member is set
Into locking the gap between the second in command and the force transmission member.
Preferably, the knee space retractor also includes distracting force registration scale, and the distracting force registration scale is set
Put on the post.
Preferably, described first strut part and can rotate or lock relative to the force transmission member, and/or described the
Two, which strut part, to rotate or lock relative to the second in command.
Preferably, described first strut part and removably coupled with the force transmission member by head rod, institute
State second and strut part and removably coupled with the second in command by the second connecting rod, the head rod and described
Two connecting rods are configured to each be inverted after the dismounting from the force transmission member and the second in command, so
Turn back to respectively afterwards to the force transmission member and the second in command.
Preferably, the knee space retractor also includes the interior angle display that turns up, the interior valgus angle instruction
Device regularly couples with the force transmission member, to indicate that described first struts part or described second strut in part and turn up
Angle, the interior angle display that turns up are arranged in the head rod or second connecting rod, and correspondingly described
First struts part or described second struts part and be provided with indicating section.
Preferably, the spring bears precompression, and the precompression between the force transmission member and the pedestal
More than when the knee space retractor is in original state by the gross weight of the spring-supported part.
Preferably, the knee space retractor includes handle locking component, and the handle locking component is configured to
It is remote relative to the first in command to limit the second in command.
Preferably, the handle locking component includes the ratchet bar that is hinged with the first in command and is arranged on described second
Ratchet on handle, and the ratchet bar is kept in hinged place by the deflecting force that torsion spring or spring leaf apply with the ratchet
Engagement.
Compared with current knee space retractor, the application at least has obvious in following one or more aspects
Benefit.Gap is strutted for example, can be realized using spring and measure tough tensile force of belt and knee joint in real time, and has larger spring travel
Shown with accurate force value；Doctor has direct hand to feel to the size of tough tensile force of belt；Simple operation, strut mode letter
It is single, efficient；Left and right knee joint can complete operation etc. with a set of machinery.
Brief description of the drawings
The exemplary embodiment of the application is described in detail below with reference to accompanying drawings, it should be appreciated that retouch below
The embodiment stated is only used for explaining the application, rather than scope of the present application is limited, wherein：
Fig. 1 is the perspective view for showing the knee space retractor according to embodiments herein；
Fig. 2 is the front view of the knee space retractor shown in Fig. 1；
Fig. 3 is the sectional view of the knee space retractor shown in Fig. 1；
Fig. 4 is another perspective view for showing the knee space retractor shown in Fig. 1, wherein eliminating first struts part
Part is strutted with second；
Fig. 5 is the sectional view made along the line A-A in Fig. 3, illustrated therein is first and struts part and second and struts part
Internal structure.
Embodiment
The preferred embodiment of the application is described in detail with reference to example.But it will be understood by those skilled in the art that
These exemplary embodiments are not meant to form any restrictions to the application.In addition, in the case where not conflicting, the application's
Feature in embodiment and embodiment can be mutually combined.In the accompanying drawings, for simplicity, other parts, but this are eliminated
Being not intended that the knee space retractor of the application not may include other parts.
Reference picture 1, Fig. 2 and Fig. 3, wherein figure 1 illustrate according to the knee space retractor of embodiments herein
Perspective view, Fig. 2 and Fig. 3 are the front view and sectional view of the knee space retractor shown in Fig. 1 respectively.Such as Fig. 1 and Fig. 2 institutes
Show, knee space retractor mainly includes pedestal 10, post 11, the first in command 12, the second in command 13, force transmission member 20, the
One, which struts part 41 and second, struts part 42.Post 11 can vertically be upwardly extended from pedestal 10 and consolidated securely with pedestal 10
It is fixed.The first in command 12, which can regularly couple or be formed with pedestal 10, to be integrated and (is formed as piece component).The second in command 13
It can slide in the top of the first in command 12 and along post 11.First struts distal femur of the part 41 for contacting patient
Osteotomy surface, and second struts the osteotomy surface that part 42 is used to contact the proximal tibia of patient.In addition, the knee space of the application
Retractor may also include force transmission member 20 and spring 30.Force transmission member 20 is in the top of the second in command 12 and can be along
Post 11 slides.Spring 30 can extend between pedestal 10 and force transmission member 20 along post 11.First, which struts part 41, to pass through
Head rod 47 removably couples with force transmission member 20, and second strut part 42 can be by the second connecting rod 48 and
Second chief 13 removably couples.As shown in figure 4, show that removal first struts part 41 and the second knee for strutting part 42 closes
Internode gap retractor 1.
According to an embodiment, spring 30 is preferably cylindrical helical compression spring simple in construction, because its load
Relatively stablize close to straight line and its rigidity with deformation relationship curve.Shown spring 30 can surround post 11 from pedestal 10 in fig. 1-3
Upwardly extend, but can also extend in the inside of post 11 or side.Alternatively, it is also possible to use other types of spring, such as spiral shell
Revolve extension spring, disc spring etc..Certainly, in the case of using other types of spring, the mechanism associated with spring may need
Correspondingly to adjust, this adjustment is known, is not described in detail herein.
The knee space retractor of the application also includes remote relative to the first in command 12 to limit the second in command 13
Handle locking component 50.According to an embodiment, handle locking component 50 may include the ratchet bar being arranged on the first in command 12
51 and the ratchet 52 that is arranged on the second in command 13.As shown in Figures 2 and 3, the handle lock part for being not in mode of operation is shown
Part 50, wherein ratchet bar 51 are not engaged by biasing with ratchet 52.In operational state, the spine on the engaging ratchet teeth bar 51 of ratchet 52
Tooth, so as to only allow ratchet 52 to move down, but ratchet 52 is prevented to move up.In handle locking component 50 and the first in command 12
Hinged place torsion spring or spring leaf can be set, to force ratchet bar 51 and ratchet 52 to keep engagement.
In addition, in order to ensure the first in command 12 and second when the first in command 12 and the second in command 13 are grasped by doctor
The keeping parallelism of handle 13, in order to the parallel transmission of power, and hand grip is set equivalently to be delivered on spring 30, the knee of the application
Joint space retractor 1 may also include the first parallel transmission mechanism, and the first parallel transmission mechanism includes at least one pair of connecting rod, should
At least one pair of connecting rod includes first connecting rod 14 and second connecting rod 15.As illustrated in fig. 1 and 2, first connecting rod 14 and second connecting rod 15 exist
Midpoint 18 (visible in figure 3) place is hinged, and the equal length of first connecting rod 14 and second connecting rod 15.The right side of first connecting rod 14
One end and right side one end of second connecting rod 15 are respectively hinged on the first in command 12 and the second in command 13, the left side of first connecting rod 14
The left side other end of the other end and second connecting rod 15 is respectively slidably hinged on chute 17 and the first in command of the second in command 13
In 12 chute 16.In fig. 1 it is shown that a pair of links of the middle part of the first in command 12 and the second in command 13 is arranged on,
However, it is also possible to the either side in the first in command 12 and the second in command 13 sets a pair of links.In addition, first connecting rod 14 and second
The connecting mode of the left and right ends of connecting rod 15 can be exchanged mutually.
Similarly, in order to be easy to the parallel transmission of power during compression spring 30, and make the pressure of spring 30 equivalent
Ground, which is delivered to first and struts part 41 and second, to be strutted on part 42, and the knee space retractor 1 of the application may also include
Two parallel transmission mechanisms, the second parallel transmission mechanism include at least one pair of connecting rod, and at least one pair of connecting rod includes third connecting rod
24 and fourth link 25.As illustrated in fig. 1 and 2, third connecting rod 24 and fourth link 25 are hinged at midpoint 28, and third connecting rod 24
With the equal length of fourth link 25.Left side one end of third connecting rod 24 and left side one end of fourth link 25 are respectively hinged at
On second chief 13 and force transmission member 20, the right side other end of third connecting rod 24 and the right side other end of fourth link 25 respectively can
Slidably it is hinged in the chute 27 of force transmission member 20 and the chute 26 of the second in command 13.In fig. 1 and 2, show and set
Two pairs of connecting rods of the both sides in the second in command 13 and power transfer part 20 are put, however, it is also possible in the second in command 13 and power transfer part
The middle part of part 20 sets a pair of links.In addition, the connecting mode of the left and right ends of third connecting rod 24 and fourth link 15 can
To exchange mutually.
According to an embodiment, one in first connecting rod 14, second connecting rod 15, third connecting rod 24 and fourth link 25 or
At multiple either ends, limited block can be set, to limit the first parallel transmission mechanism and/or the second parallel transmission mechanism
By compression degree and/or it is extended degree.For example, the limited block 21 being arranged on first connecting rod 14 and being arranged on fourth link 25
On limited block 22.
According to an embodiment, to make knee space retractor first strut part 41 and second in original state and strut
Part 42 keeps contact, it is expected that the second in command 13 and force transmission member 20 are drawn close as much as possible.Therefore, in the first parallel transmission machine
It can set to tend to the first in command 12 and the second in command 13 at the first connecting rod 14 of structure and the midpoint 18 of second connecting rod 15
The torsion spring or spring leaf 19 separated.Turned round as shown in figure 3, torsion spring or spring leaf 19 apply to first connecting rod 14 and second connecting rod 15
Turn power so that the end that first connecting rod 14 and second connecting rod 15 are hinged on the first in command 12 or on the second in command 13 tends to lean on
Hold together, so that the second in command 13 tends to move up.Or can also be in the third connecting rod 24 of the second parallel transmission mechanism and
Torsion spring or spring leaf (not shown) are set at the midpoint 28 of double leval jib 25, so that the second in command 13 and force transmission member 20 become
In drawing close.In the knee space retractor of the application, one or multiple torsion springs or spring leaf are either set, but are supportting
The elastic force of torsion spring or spring leaf has no influence to the registration of distracting force under open state.
According to an embodiment, to make knee space retractor directly display gap registration, in force transmission member 20 or the
It can be set on second chief 13 and strut gap registration scale 23, strutting part 41 and second with instruction first struts part 42 and strutted
Knee joint between gap.It should be noted that the registration for strutting gap registration scale 23, which considers first, struts the He of part 41
Second struts its thickness of part 42.Therefore, doctor can be by strutting whether gap registration directly judges knee space
Expected size is reached.
According to an embodiment, gap locking member 29 is additionally provided with force transmission member 20 or the second in command 13.Such as Fig. 1 institutes
Show, when strutting gap registration scale 23 and being arranged on the second in command 13, gap locking member 29 can be provided in power transmission
Clamping screw on part 20.When needed, can be fixed with rotational lock bolt so as to which gap registration scale 23 will be strutted.
Certainly, strutting gap registration scale 23 can also be arranged on force transmission member 20, and gap locking member 29 can then be set
On the second in command 13.
When knee space retractor struts the osteotomy surface of kneed distal femur and proximal tibia, doctor holds the
The power that leader 12 and the second in command 13 are applied, which through spring 30 is delivered to first and struts part 41 and second, struts part 42.When
When reaching poised state, grip, spring force and tough tensile force of belt it is equal in magnitude.According to an embodiment, to show the numerical value of the power,
Distracting force registration scale 32 is provided with post 11.As shown in figure 1, distracting force registration scale 32 is arranged on the upper end of post 11.First
During beginning state, it is contemplated that the stability of knee space retractor, make spring 30 by certain precompression in assembling.This is pre-
The numerical value of pressure is embodied on distracting force registration scale 32.Preferably, the precompression is more than in original state by the institute of spring 30
The gross weight of the part of support.
As it was previously stated, first struts part 41 and second and struts part 42 and be detachably coupled to force transmission member 20 respectively
With the second in command 13.According to an embodiment, first struts part 41 is hinged with head rod 47 by axle 48.Such as Fig. 4 and Fig. 5
Shown, the first axle 45 for strutting part 41 is contained in the hole of head rod 47, and can be fixed by locking bolt 44.When
When locking bolt 44 unscrews, first struts part 41 can be relative to head rod 47 (that is, relative to force transmission member 20)
Rotate, so as to indicate situation of being turned up in kneed.Therefore, according to an embodiment, the knee space of the application retracts
Device also includes the interior angle display 43 that turns up.The angle display 43 that inside turns up may be provided on head rod 47, such as Fig. 5 institutes
Show, such as the side of head rod 47 is arranged on by way of inserting.Correspondingly, in the first side edge for strutting part 41
Provided with indicating section 49,46, the indicating section 49,46 is close to the interior angle display 43 that turns up so that struts part 41 first
When strutting 42 keeping parallelism of part with second, the zero graduation for the angle display 39 that inside turns up aligns with indicating section 49,46 (is scheming
It is only shown as aliging with indicating section 49 in 5).With the first rotation for strutting part 41, indicating section 49,46 is in interior valgus angle
Valgus angle registration in corresponding is indicated on indicator 43.Certainly, it is to pass through to strut part 42 with the second connecting rod 48 second
In the case that axle is be hinged, the angle display 43 that inside turns up may also be arranged in the second connecting rod 48.In this case, correspondingly
Setting indicating section (not shown) on part 42 can be strutted second.
According to an embodiment, second to strut the connecting rod 48 of part 42 and second can be two parts being linked together,
It can also be formed and be integrated.The connecting rod 48 of head rod 47 and second is configured to respectively from the He of force transmission member 20
After being dismantled on the second in command 12, each self reversal simultaneously turns back to force transmission member 20 and the second in command 13 again respectively so that knee
Joint space retractor 1 is for example converted to present measurable right knee joint from original measurable left knee joint.Correspondingly,
One connecting rod 47 and the second connecting rod 48 be constructed such that first strut part 41 and second strut part 42 be biased in by
The side for the plane that post 11 and force transmission member 20, the second in command 13 and/or first in command 12 are limited.For example, such as Fig. 1 institutes
Show, when doctor holds with a hand the knee space retractor of the application, first, which struts part 41 and second, struts part 42 and refer to
Forwards and it is offset to the right side of the plane limited by post 11 and force transmission member 20, the second in command 13 and/or first in command 12
Side, it can now measure left knee joint.After the connecting rod 48 of head rod 47 and second is dismantled, inverts and turned back to, when
When doctor grips, first struts part 41 and second struts the left side that part 42 is directing forwardly but is offset to above-mentioned plane, now
Right knee joint can be measured.
The concrete structure of the knee space retractor according to embodiments herein is described above by reference to accompanying drawing 1-5,
Below referring again to accompanying drawing 1-5, the operating process of the knee space retractor using the application is illustrated.
In the original state of knee space retractor, spring 30 is compressed by precompression, and the second in command 13 is in example
As abutted against force transmission member 20 in the presence of torsion spring or spring leaf 19.
Doctor, which can hold the first in command 12 and the second in command 13 and strut part 41 and second by first, to be strutted part 42 and inserts
Enter into the knee joint for having completed first osteotomy, making first, to strut part 41 corresponding with the osteotomy surface of distal femur, and the second support
The osteotomy surface that part 42 is opened with proximal tibia is corresponding.
Then, doctor firmly can hold the first in command 12 and the second in command 13, the grip of hand is delivered on spring 30,
And then drive first to strut part 41 and second and strut the pulling force that part 42 overcomes ligament, to strut kneed gap.Now,
According to an embodiment, by the first parallel transmission mechanism the first in command 12 and the second in command 13 can be ensured all the time abreast towards that
This close direction movement, and can ensure that first struts part 41 and second and strut part 42 by the second parallel transmission mechanism
All the time abreast remote direction movement towards each other.Therefore, the knee space retractor of the application can be passed by double parallel
Pass mechanism and ensure that the first in command and the second in command are Parallel Constraint all the time, and be flat all the time between the second in command and force transmission member
Row constraint.Specifically, the grip of doctor is delivered on spring 30 by handle, then by being acted on while post 11 and spring 30,
Transfer force to first to strut on part 41, therefore, the distracting force as caused by spring 30 acts directly on section of femur and shin bone
On bone face, i.e., by holding the force reaction applied on the osteotomy surface of femur and shin bone, to strut knee space.When up to
During to poised state, grip, spring distracting force and tough tensile force of belt it is equal in magnitude.Now, strut and refer on gap registration scale 23
Kneed gap is shown, and distracting force is indicated on distracting force registration scale 32.
It should be noted that when doctor firmly holds the first in command 12 and the second in command 13, handle locking component 50 also exists
Real-time working, make the first in command 12 and the second in command 13 will not be away from each other.Specifically, in the effect of torsion spring or spring leaf
Under, the ratchet 52 on the second in command 13 keeps engaging with the ratchet bar 51 on the first in command 12 during handle is held.
With continuing firmly to hold the first in command 12 and the second in command 13, strut gap and distracting force is gradually increased, work as support
When standard width of a room in an old-style house gap reaches expected, gap locking member 29 can be screwed as needed, made first to strut part 41 and second and strutted part
42 position keeps fixing, and now, the pulling force of knee ligament can be read from distracting force registration scale 32.In addition, with
In the embodiment for having put the interior angle display that turns up, it can also now be read from the interior angle display 43 that turns up in kneed
Turn up situation.According to interior angular readings of turning up, doctor can carry out soft tissue balance art.It is postoperative that soft tissue balance is completed in doctor
Part 41 can be strutted by first as needed to fix by locking bolt 44, make first strut part 41 lose rotary freedom and
The keeping parallelism relation of part 42 is strutted with second.Certainly, can be before measurement starts if situation judgement is turned up in need not carrying out
Locking bolt 44 is screwed.
So far, doctor can be according to gap, distracting force and interior valgus angle be strutted, and auxiliary is completed soft tissue balance art or sentenced
Whether disconnected osteotomy amount meets needs of performing the operation.
Then, gap locking member 29 is unscrewed, then release handle locking component 50, you can make knee space retractor
1 returns to original state.
When needing to carry out opposite side knee surgery, it directly can strut part 41 and second by first and strut part 42 and divide
Do not extract from force transmission member 20 and the second in command 13, then turned back to respectively after each self reversal, you can meet to be used for opposite side
The space distraction of knee surgery and the function of soft tissue balance.
In addition, if strutting part 41 by first is replaced with pad, the knee space retractor of the application can be with auxiliary
Help the thickness for determining pad.In addition, if first struts the collocation osteotomy plate locating guider use of part 41, then join after can carrying out
Examine osteotomy positioning.
The knee space retractor of the application uses cylindrical helical compression spring simple in construction, realizes between strutting
The process of gap is completed by holding mode, makes doctor have direct hand to feel to the size of tough tensile force of belt.In addition, carried using spring
Lotus and its deformation relationship curve make elastic deformation amount and the knee joint of spring close to linear pattern and the more stable characteristic of its rigidity value
It is equal to strut the tough tensile force of belt behind gap, and after retractor struts knee space, is supportted caused by the compress variation of spring
The pulling force of opening force and knee ligament reversely struts gap to be equivalent so as to measure tough tensile force of belt and knee joint in real time, and
And the stroke of doctor's handgrip part and the stroke of spring are 1：1 relation, there are larger spring travel and accurate force value to show
Show.In the knee space retractor of the application, some inserted in knee space struts one rotation of part reservation
The free degree, then situation of being turned up in knee joint can be shown, carrying out knee joint soft tissue balance art to doctor provides effective foundation.Separately
Outside, the locking of the knee space retractor of the application/release process easily operates, and saves the time, simple in construction and reliability
It is good.
The application is described in detail above in association with specific embodiment.Obviously, above description and show in the accompanying drawings
The embodiment gone out should be construed as it is exemplary, without forming limitation to the application.For those skilled in the art
Speech, can carry out various variations or modifications, these variations or modifications are not in the case where not departing from spirit herein to it
Depart from scope of the present application.
Claims (12)
1. a kind of knee space retractor, including：
Pedestal (10)；
Post (11), the post vertically extend from the pedestal (10) and firmly fixed with the pedestal (10)；
The first in command (12), the first in command, which regularly couples or formed with the pedestal (10), to be integrated；
The second in command (13), the second in command are in the top of the first in command (12) and can be sliding along the post (11)
It is dynamic；
First struts part (41), and described first struts the osteotomy surface that part is used to contact the distal femur of patient；And
Second struts part (42), and described second struts the osteotomy surface that part is used to contact the proximal tibia of the patient, and with
The second in command (13) removably couples；
Characterized in that, the knee space retractor also includes：
Force transmission member (20), the force transmission member are in the top of the second in command (13) and can be along the posts
(11) slide, and described first struts part (41) and removably couple with the force transmission member (20)；With
Spring (30), the spring prolong between the pedestal (10) and the force transmission member (20) along the post (11)
Stretch.
2. knee space retractor according to claim 1, it is characterised in that the knee space retractor also wraps
The first parallel transmission mechanism is included, the first parallel transmission mechanism includes at least one pair of connecting rod, and at least one pair of described connecting rod includes
The first connecting rod (14) and second connecting rod (15) of equal length, the first connecting rod (14) and the second connecting rod (15) are at midpoint
(18) place is hinged, and is respectively articulated with one end of the first connecting rod (14) of the same side and one end of the second connecting rod (15)
On the first in command (12) and the second in command (13), the other end and institute in the first connecting rod (14) of opposite side
The other end for stating second connecting rod (14) is respectively slidably hinged on the chute (17) and described first of the second in command (13)
In the chute (16) of handle (12), and it is provided with the midpoint (18) place to make the first in command (12) and described second
The torsion spring or spring leaf (19) that handle (13) tends to separate out out.
3. knee space retractor according to claim 1, it is characterised in that the knee space retractor also wraps
The second parallel transmission mechanism is included, the second parallel transmission mechanism includes at least one pair of connecting rod, and at least one pair of described connecting rod includes
The third connecting rod (24) and fourth link (25) of equal length, the third connecting rod (24) and the fourth link (25) are at midpoint
(28) place is hinged, and is respectively articulated with one end of the third connecting rod (24) of the same side and one end of the fourth link (25)
On the second in command (13) and the force transmission member (20), opposite side the third connecting rod (24) the other end and
The other end of the fourth link (25) is respectively slidably hinged on the chute (27) of the force transmission member (20) and described
In the chute (26) of the second in command (13), and it is provided with the midpoint (28) place to make the second in command (13) and described
The torsion spring or spring leaf that force transmission member (29) tends to separate out out.
4. knee space retractor according to claim 1, it is characterised in that the knee space retractor also wraps
Include and strut gap registration scale (23), the gap registration scale that struts is arranged on the force transmission member (20) or described second
On handle (13).
5. knee space retractor according to claim 4, it is characterised in that the knee space retractor also wraps
Gap locking member (29) is included, the gap locking member is configured to lock the second in command (13) and the power passes
Pass the gap between part (20).
6. knee space retractor according to claim 1, it is characterised in that the knee space retractor also wraps
Distracting force registration scale (32) is included, the distracting force registration scale is arranged on the post (11).
7. knee space retractor according to claim 1, it is characterised in that described first struts part can be relative
In the force transmission member (20) rotate or lock, and/or described second strut part can be relative to the second in command
(13) rotate or lock.
8. knee space retractor according to claim 7, it is characterised in that described first, which struts part (41), passes through
Head rod (47) removably couples with the force transmission member (20), and described second struts part (42) connects by second
Extension bar (48) removably couples with the second in command (13), the head rod (47) and second connecting rod (48)
It is configured to each be inverted after the dismounting from the force transmission member (20) and the second in command (13), so
Turn back to respectively afterwards to the force transmission member (20) and the second in command (13).
9. knee space retractor according to claim 8, it is characterised in that the knee space retractor also wraps
Turn up angle display (43) in including, and the interior angle display that turns up regularly couples with the force transmission member (20), with
Indicate that described first struts part (41) or described second strut the interior valgus angle of part (42), the interior valgus angle instruction
Device (43) is arranged in the head rod (47) or second connecting rod (48), and correspondingly described first struts part
(41) or described second struts part (42) and is provided with indicating section.
10. knee space retractor according to claim 1, it is characterised in that the spring (30) passes in the power
Pass and precompression is born between part (20) and the pedestal (10), and the precompression is more than in the knee space retractor
The gross weight of the part supported during in original state by the spring (30).
11. knee space retractor according to claim 1, it is characterised in that the knee space retractor bag
Handle locking component (50) is included, the handle locking component is configured to limit the second in command (13) relative to described first
Handle (12) is remote.
12. knee space retractor according to claim 11, it is characterised in that handle locking component (50) bag
Include the ratchet bar (51) being hinged with the first in command (12) and the ratchet (52) being arranged on the second in command (13), and institute
Ratchet bar (51) is stated to be kept engaging with the ratchet (52) by the deflecting force that torsion spring or spring leaf apply in hinged place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711083446.5A CN107693065B (en) | 2017-11-07 | 2017-11-07 | Knee joint gap retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711083446.5A CN107693065B (en) | 2017-11-07 | 2017-11-07 | Knee joint gap retractor |
Publications (2)
| Publication Number | Publication Date |
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| CN107693065A true CN107693065A (en) | 2018-02-16 |
| CN107693065B CN107693065B (en) | 2024-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711083446.5A Active CN107693065B (en) | 2017-11-07 | 2017-11-07 | Knee joint gap retractor |
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| WO2020200563A1 (en) * | 2019-03-29 | 2020-10-08 | Depuy Ireland Unlimited Company | Surgical instrument and method for performing an orthopaedic surgical procedure |
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| CN114587556A (en) * | 2022-03-28 | 2022-06-07 | 中南大学湘雅医院 | Fixed support for tibia osteotomy |
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