CN209574847U - Improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement - Google Patents
Improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement Download PDFInfo
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- CN209574847U CN209574847U CN201820807356.XU CN201820807356U CN209574847U CN 209574847 U CN209574847 U CN 209574847U CN 201820807356 U CN201820807356 U CN 201820807356U CN 209574847 U CN209574847 U CN 209574847U
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- linking arm
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Abstract
The utility model provides an improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement, belonging to the technical field of medical instruments. The intramedullary rod connector adopts a 'swing arm' design that the intramedullary rod connector is long and short and is parallel and can rotate along the same round mandrel, and can be matched and inserted into the intramedullary positioning guide rod and the femoral drilling guide device, so that the intramedullary positioning guide rod, the intramedullary rod connector and the femoral drilling guide device are perfectly matched and connected with each other; the intramedullary positioning guide rod adopts a concave design, can effectively utilize the space between condyles and behind the patella and is led out from the lower part of the patella, the patella does not need to be excessively pulled, and the lower segment part of the patella can play a role in pulling the patellar ligament and the soft tissue by the pulling hook to expose the surgical field; meanwhile, the intramedullary positioning guide rod also adopts the design of bending prevention and rotation prevention, so that the precision stability of the intramedullary positioning guide rod can be effectively enhanced, and the positioning accuracy of the femoral prosthesis is improved.
Description
Technical field
The utility model relates to the field of medical instrument technology, in particular to knee joint single condyle displacement technique mini-incision and prosthese
Precise positioning technical field, specifically a kind of Improvement type femoral prosthesis position medical apparatus, are mainly used for minimum cutting using minimally invasive
The precise positioning that knee list condyle joint replacement femoral prosthesis position is completed under mouthful and most preferably placement.
Background technique
Clinically carry out knee joint single condyle replacement operation extensively at present, can more retain bone relative to Total knee arthroplasty
Amount, closer to physiological motion of knee joint function, better proprioception and knee articulation degree and patient restore faster.
The mono- condyle knee joint system (MP) of the Microplasty begun to use for 2012 is on the basis of the list condyle knee prosthesis of third generation Oxford
Very big improvement has been done, using small notch by kneecap, without the kneecap that turns up in art, has been realized by femur marrow interior locating device component
The precise positioning of femoral prosthesis.In order to appear notch and ideally insertion femur marrow inner guide, it is often necessary to sting except inboard portion
Kneecap and spur for the case of some serious " kneecap blocks ", or even need upward expansion operative incision appropriate, Cai Nengshun
Location guide in benefit insertion femur marrow.Current clinically common femur marrow inner guide designs for linear type, the kneecap on the inside of knee
Under other mini-incision exposure, it will appear side impaction in femur im rod and kneecap when being inserted into location guide in marrow and form " kneecap screening
Gear " often needs assistant that kneecap could be smoothly inserted into marrow inner guide to drawing on the outside of knee.There is still a need for fit again for several cases
When expanding operative incision, mitigates the tension of " kneecap blocks ", be preferably inserted into femur osteotomy guider.Meanwhile it even if smoothly inserting
Enter femur marrow interior bar and femur drill guide, it is still necessary to which in addition a doctor suitably exposes visual area using drag hook, can be smooth
Im rod connector is installed, the drilling for carrying out femur prepares.For knee joint Minimally Invasive Surgery, while being inserted into femur im rod, peace
Femur drill guide and connecting rod are put, seems that visual area space is inadequate sometimes, certainly will need suitably to expand the side such as operative incision
Formula reduces the advantage that Minimally Invasive Surgery postoperative pain is light, rehabilitation is fast to a certain degree.
Summary of the invention
The purpose of this utility model is that overcoming the deficiencies of the prior art and provide a kind of Improvement type knee joint single condyle displacement
Art femur marrow inner guide positioning system.
In order to achieve the above objectives, the utility model provides following technical solution:
A kind of Improvement type knee joint single condyle displacement technique femur marrow inner guide positioning system, including location guide in marrow, in marrow
Rod connector, femur drill guide.
Wherein, location guide successively includes marrow inner segment, kneecap section and linkage section in marrow；Its marrow inner segment is to be inserted into femur
In；Its kneecap section is designed using " recessed " type, and linkage section is provided with jack to connect im rod connector；Meanwhile marrow inner segment
It is located along the same line with linkage section.Location guide is using integrated molding design in the marrow.
In the present invention, the kneecap section of location guide is designed using " recessed " shape in marrow, can be efficiently used intercondylar recessed
And kneecap rear space gap, drag hook drawing ligamentum patellae and soft tissue exposure visual area are exported and played the role of from kneecap lower section；
Meanwhile the form of " fin " has been used for reference at the both ends of kneecap section, is designed using " anti-bending anti-rotation ", is increased in right angle portions corner
Connection area increases precision, the effective stable accuracy for enhancing location guide in marrow to improve the ability of anti-deformation of guide rod
Property, improve the accuracy of femoral prosthesis positioning.
Im rod connector includes short linking arm, connection handle, long linking arm；Wherein, short linking arm and long linking arm difference
It is movably arranged on the same end of connection handle, and arranged in parallel between short linking arm and long linking arm, short linking arm and long company
Connecing arm can rotate 360 ° around connection handle；Further, it is arranged on the linkage section of location guide in short linking arm and marrow
The structure of jack is adapted, and the jack can be inserted to connect location guide in marrow；Long linking arm is then to connect femur
Drill guide.
In the present invention, im rod connector using one is long and the other is short two it is parallel and can be rotated along same circle core shaft
" swing arm " design, can match and be inserted into marrow in location guide and femur drill guide, make location guide in marrow, im rod
Perfection is mutually matched linking between three connector, femur drill guide components.
In the present invention, femur drill guide uses the locating slot with special angle to design (existing skill
Art), it is provided with side jack and top drilling, lower section drilling；The side jack is to be inserted into im rod connector
Long linking arm, the structure of the long linking arm and the side jack is adapted, and can be inserted in the side jack with even
Connect femur drill guide；The top drilling and lower section are boring to realize condyle of femur positioning drilling.Femur drilling guiding
The device jack direction that two boring directions and medial/lateral are connected with im rod connector up and down, coronal-plane are in 7 ° of angles, arrow
Shape face is in 10 ° of angles.
Whole system working principle are as follows: flat in condyle of femur and shin bone after being smoothly inserted into location guide in marrow in femur
Femur drill guide is put between platform；Then successively location guide in short " swing arm " of im rod connector insertion marrow is inserted
Kong Zhong, long " swing arm " are inserted into the side jack of femur drill guide, and adjustment femur drill guide is located in femur
Side condyle center, and placed against condylus medialis femoris, at this point, femur boring direction is in location guide direction in marrow on coronal-plane
7 ° of varus (angle of side receptacle axis and central axes be in 7 °), in 10 ° of hypsokinesis (side receptacle axis and drilling side in sagittal plane
It is in 10 ° to the angle of axis)；It is finally drilled respectively with the top that 4mm, 6mm drill bit pass through femur drill guide, lower drill with ferrule
Hole drills through femur, completes condyle of femur boring positioning.
In the present invention, in marrow after location guide insertion femur, only there are one of location guide in marrow outside femur
Fraction, the location guide and when femur drill guide in marrow female connector connection marrow, can hit with a hammer makes im rod
" linking arm " of connector is completely inserted into jack, if that there are angles is inconsistent for " linking arm " and jack, because lever sled is dialled
Relationship, location guide may be made in the marrow outside femur with femur marrow inner part, and deformation occurs, angulation, ultimately causes femur
The deviation of positioning.Therefore location guide is designed using " anti-bending anti-rotation " in marrow, in right angle portions corner, increases parts metals
Part connection area improves the ability of anti-deformation of guide rod, increases precision.
In a preferred embodiment, in marrow location guide be provided with large, medium and small three kinds of models may be selected, with meet not
Patients surgery with kneecap size uses.
Compared with prior art, the utility model has the beneficial effects that:
The Improvement type knee joint single condyle displacement technique femur marrow inner guide positioning system of the utility model design, both can be convenient
" kneecap blocks " is avoided under mini-invasive incision, it is maximized to retain kneecap form and bone amount, while femoral prosthesis may be implemented
Precise positioning.Only need a people that can complete to operate, it is time saving and energy saving, it is most important that and the operative incision for operating needs is smaller,
Postoperative realization more preferably quick recovery.
Location guide is efficiently used intercondylar recessed and kneecap rear using the design of " recessed " type in marrow in the utility model
Space, from kneecap lower section " export ", without excessively drawing kneecap, kneecap the lower section can play drag hook drawing ligamentum patellae and soft group
Knit the effect of exposed visual area.Meanwhile " the anti-bending anti-rotation " of location guide designs in marrow, effectively enhances the essence of location guide in marrow
Stability is spent, the accuracy of femoral prosthesis positioning is improved.The im rod connector connecting rod parallel using one is long and the other is short, and the two
It can be rotated 360 ° respectively along same circle core shaft, matching degree is high.
Detailed description of the invention
Fig. 1 is the schematic front view of location guide in marrow provided by the embodiment of the utility model；
Fig. 2 is the schematic front view of im rod connector provided by the embodiment of the utility model；
Fig. 3 a is the side view of femur drill guide provided by the embodiment of the utility model；
Fig. 3 b is the top view of femur drill guide provided by the embodiment of the utility model；
Fig. 3 c is the front view of femur drill guide provided by the embodiment of the utility model；
Fig. 4 is the schematic diagram of location guide insertion femur in marrow provided by the embodiment of the utility model；
Fig. 5 is Improvement type knee joint single condyle displacement technique femur marrow inner guide positioning system provided by the embodiment of the utility model
Connection schematic diagram；
Fig. 6 is the design specification schematic diagram of location guide in marrow provided by the embodiment of the utility model；
Fig. 7 is the design specification schematic diagram of im rod connector provided by the embodiment of the utility model.
Description of symbols:
Location guide 1, marrow inner segment 11, kneecap section 12, linkage section 13 in marrow；
Im rod connector 2, short linking arm 21, connection handle 22, long linking arm 23；
Femur drill guide 3, side jack 31, top drilling 32, lower section drilling 33, side receptacle axis 34, drilling
Azimuth axis 35, central axes 36, the angle α of side receptacle axis 34 and boring direction axis 35, side receptacle axis 34 are in
The angle β of axis 36；
A, B: location guide marrow inner segment in marrow
C, D: location guide kneecap section in marrow
E: location guide linkage section in marrow
F: location guide " anti-bending anti-rotation " designs in marrow
M: the short linking arm of im rod connector
N: the long linking arm of im rod connector
Design parameter: B=26.2cm E=2.4cm marrow inner segment shank diameter d=0.5cm
The overall diameter D=0.7cm internal diameter d=0.4cm of " E " section
Small size guide rod: A=27.2cm C=4.0cm D=3.0cm
Medium size guide rod: A=27.6cm C=4.5cm D=3.5cm
Large size guide rod: A=28.0cm C=5.0cm D=4.0cm
Specific embodiment
Below in conjunction with specific embodiment and its attached drawing to Improvement type knee joint single condyle displacement technique provided by the utility model
The technical solution of femur marrow inner guide positioning system is described further.In conjunction with following explanation, the advantages of the utility model and spy
Sign will be apparent from.
It should be noted that the embodiments of the present invention have preferable implementation, it is not any to the utility model
The restriction of form.The combination of technical characteristic or technical characteristic described in the utility model embodiment is not construed as orphan
Vertical, they can be combined with each other to reach superior technique effect.The range of the preferred embodiments of the present invention
It may include other realization, and this should be understood by the utility model embodiment person of ordinary skill in the field.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.Institute that is shown here and discussing
Have in example, any occurrence should be construed as merely illustratively, not as restriction.Therefore, exemplary embodiment
Other examples can have different values.
It should be noted that unless otherwise clearly defined and limited, the term in the utility model shall be understood in a broad sense,
For the ordinary skill in the art, can be understood with concrete condition above-mentioned term in the present invention specifically contain
Justice.
The attached drawing of the utility model is all made of very simplified form and using non-accurate ratio, only to it is convenient,
The purpose for lucidly aiding in illustrating the utility model embodiment is not to limit the enforceable qualifications of the utility model.Appoint
What modification of structure, the change of proportionate relationship or adjustment of size, is not influencing the effect and institute that the utility model can be generated
Under the purpose that can reach, it should all fall in the range of the revealed technology contents of the utility model can cover.And this is practical new
Identical label appeared in type attached drawing represents identical feature or component, can be apply to different embodiments.
As shown in Figures 1 to 7, it is fixed to provide a kind of Improvement type knee joint single condyle displacement technique femur marrow inner guide for the utility model
Position system.
The Improvement type knee joint single condyle displacement technique femur marrow inner guide positioning system includes location guide 1, im rod in marrow
Connector 2, femur drill guide 3.
Wherein, location guide 1 successively includes marrow inner segment 11, kneecap section 12 and linkage section 13 in marrow；Its marrow inner segment 11 to
It is inserted into femur；Its kneecap section 12 is designed using " recessed " type, and linkage section 13 is provided with jack to connect im rod connector
2；Meanwhile marrow inner segment 11 is located along the same line with linkage section 13.Location guide 1 is using integrated molding design in the marrow.
Further, the form of " fin " has been used for reference at the both ends of kneecap section 12, is designed using " anti-bending anti-rotation ", in right angle portion
Point corner increases connection area, to improve the ability of anti-deformation of guide rod, increases precision, effective to enhance location guide in marrow
1 precision stability improves the accuracy of femoral prosthesis positioning.
Im rod connector 2 includes short linking arm 21, connection handle 22, long linking arm 23；Wherein, short linking arm 21 and long company
The same end that arm 23 is movably arranged on connection handle 22 respectively is connect, and is parallel to each other and sets between short linking arm 21 and long linking arm 23
It sets, short linking arm 21 and long linking arm 23 can be rotated 360 ° around connection handle 22；Further, in short linking arm 21 and marrow
The structure for the jack being arranged on the linkage section 13 of location guide 1 is adapted, and the jack can be inserted and positioned with connecting in marrow
Guide rod 1；Long linking arm 23 is then to connect femur drill guide 3.
In the present invention, femur drill guide 3 designs (existing skill using the locating slot with special angle
Art), it is provided with side jack 31 and top drilling 32, lower section drilling 33；The side jack 31 is to be inserted into marrow
The long linking arm 23 of rod connector 2, the top drilling 32 and lower section drilling 33 are to realize condyle of femur positioning drilling.The femur
The jack direction that about 3 two boring directions of drill guide and medial/lateral are connected with im rod connector 2, coronal-plane are in
7 ° of angles (the angle β of side receptacle axis 34 and central axes 36 is in 7 °), sagittal plane in 10 ° of angles (side receptacle axis 34 with
The angle α of boring direction axis 35 is in 10 °).
In a preferred embodiment, in marrow location guide 1 be provided with large, medium and small three kinds of models may be selected, with meet not
Patients surgery with kneecap size uses.
Specifically, the design specification of location guide 1 and im rod connector 2 may refer to shown in Fig. 6 and Fig. 7 in marrow.
Wherein:
A, B is indicated: location guide marrow inner segment in marrow；
C, D is indicated: location guide kneecap section in marrow；
E is indicated: location guide linkage section in marrow；
F is indicated: location guide " anti-bending anti-rotation " designs in marrow；
M is indicated: the short linking arm of im rod connector；
N is indicated: the long linking arm of im rod connector；
Design parameter: B=26.2cm, E=2.4cm, marrow inner segment shank diameter d=0.5cm；
The overall diameter D=0.7cm of " E " section, internal diameter d=0.4cm；
Small size guide rod: A=27.2cm, C=4.0cm, D=3.0cm；
Medium size guide rod: A=27.6cm, C=4.5cm, D=3.5cm；
Large size guide rod: A=28.0cm, C=5.0cm, D=4.0cm.
Improvement type knee joint single condyle displacement technique femur marrow inner guide positioning system provided by the utility model, embodiments thereof
It is as follows:
(1) femur drills: 45 ° of knee sprung, using 4mm electric drill and 5mm opening cone in front of femur leading edge 1mm, tight
It pastes fossa intercondylaris femoris inner wall, be directed toward the drilling of anterior superior spine direction, location guide 1 in marrow is inserted into, until location guide 1 in marrow
Femoral surface (4) as shown are arrived on " concave " part top.At this point, location guide 1 is parallel to femoral bone cavitas medullaris long axis in Improvement type marrow.
(2) 90 ° of knee sprung use downwards standardized position line of electric knife at condylus medialis femoris middle line position, are inserted into femur
The short linking arm 21 of im rod connector 2 is inserted into marrow in the jack of location guide 1, long linking arm 23 by drill guide 3
It is inserted into the side jack 31 of femur drill guide 3, it is central and tight that adjusting femur drill guide 3 is located at condyle in femur
By condylus medialis femoris, confirms that position line is centrally located by the hole 6mm, pierce 4mm and 6mm drill bit, remove drill bit and femur drilling
Guide 3 is completed the prelocalization of femur osteotomy and is prepared.
The whole operation of direct lever system described in the utility model is simple and easy, compared with traditional surgical procedure, the marrow
Interior location guide 1 had not only been able to achieve positioning in accurately marrow, but also can be designed by its " spill ", solved " kneecap blocks " to operation
Wild influence, reduces the length of operative incision, meanwhile, " anti-bending anti-rotation " design of location guide 1 can reduce marrow inner guide in marrow
" deformation " in positioning operation improves the precision positioned in marrow.In addition, im rod connector 2 using one is long and the other is short two
The linking arm being parallel to each other, and the two linking arms can be rotated along 360 ° of same circle core shaft respectively, matching degree is high.
Foregoing description is only the description to the utility model preferred embodiment, is not to any of the scope of the utility model
It limits.Any change or modify equal that any those skilled in the art makes according to the technology contents of the disclosure above
It should be considered as equivalent effective embodiment, belong to the range of technical solutions of the utility model protection.
Claims (1)
1. a kind of Improvement type knee joint single condyle displacement technique femur marrow inner guide positioning system, it is characterised in that: including being positioned in marrow
Guide rod (1), im rod connector (2), femur drill guide (3)；
Location guide (1) successively includes marrow inner segment (11), kneecap section (12) and linkage section (13) in the marrow；The marrow inner segment
(11) to be inserted into femur；The kneecap section (12) is designed using " recessed " type, and the form of fin has been used for reference at its both ends, is adopted
It is designed with " anti-bending anti-rotation ", increases connection area in right angle portions corner；The linkage section (13) be provided with jack to
It connects im rod connector (2)；Meanwhile marrow inner segment (11) is located along the same line with linkage section (13)；
The femur drill guide (3) is designed using the locating slot with special angle, be provided with side jack with
And top drilling (32), lower section drilling (33)；Long linking arm of the side jack to be inserted into im rod connector (2)
(23), the top drilling (32) and lower section drilling (33) are to realize condyle of femur positioning drilling；
The im rod connector (2) includes short linking arm (21), connection handle (22), long linking arm (23)；The short linking arm
(21) and long linking arm (23) is movably arranged on the same ends of connection handle (22), and short linking arm (21) and long linking arm respectively
(23) arranged in parallel between, short linking arm (21) and long linking arm (23) can carry out 360 ° of rotations around connection handle (22)
Turn；Further, the structure for the jack being arranged on short linking arm (21) and the linkage section (13) is adapted, and can be inserted described
Jack is to connect location guide in marrow (1)；The structure of long linking arm (23) and the side jack is adapted, and institute can be inserted
It states in the jack of side to connect femur drill guide (3)；
Two boring directions and medial/lateral are connected the femur drill guide (3) with im rod connector (2) up and down
Jack direction, coronal-plane are in 7 ° of angles, and sagittal plane is in 10 ° of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807356.XU CN209574847U (en) | 2018-05-29 | 2018-05-29 | Improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820807356.XU CN209574847U (en) | 2018-05-29 | 2018-05-29 | Improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement |
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| Publication Number | Publication Date |
|---|---|
| CN209574847U true CN209574847U (en) | 2019-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820807356.XU Active CN209574847U (en) | 2018-05-29 | 2018-05-29 | Improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108670390A (en) * | 2018-05-29 | 2018-10-19 | 上海市杨浦区中心医院(同济大学附属杨浦医院) | Improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement |
| CN111012470A (en) * | 2019-12-27 | 2020-04-17 | 首都医科大学宣武医院 | Movable platform single-condyle replacement medullary cavity rod insertion 3D positioning guide plate and manufacturing method thereof |
-
2018
- 2018-05-29 CN CN201820807356.XU patent/CN209574847U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108670390A (en) * | 2018-05-29 | 2018-10-19 | 上海市杨浦区中心医院(同济大学附属杨浦医院) | Improved femoral intramedullary guide rod positioning system for knee joint unicondylar replacement |
| CN111012470A (en) * | 2019-12-27 | 2020-04-17 | 首都医科大学宣武医院 | Movable platform single-condyle replacement medullary cavity rod insertion 3D positioning guide plate and manufacturing method thereof |
| CN111012470B (en) * | 2019-12-27 | 2024-04-30 | 首都医科大学宣武医院 | Movable platform unicondylar replacement intramedullary rod insertion 3D positioning guide plate and manufacturing method thereof |
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