CN203873853U - Orthopedic device for growth rods capable of actively distracting used for scoliosis and kyphosis posteriors of children or teenagers - Google Patents
Orthopedic device for growth rods capable of actively distracting used for scoliosis and kyphosis posteriors of children or teenagers Download PDFInfo
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- CN203873853U CN203873853U CN201320850868.1U CN201320850868U CN203873853U CN 203873853 U CN203873853 U CN 203873853U CN 201320850868 U CN201320850868 U CN 201320850868U CN 203873853 U CN203873853 U CN 203873853U
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Abstract
The utility model relates to a spinal orthopedic device. The spinal orthopedic device comprises the growth rods and a growth groove (5). The growth rods comprise a first rod member (2) and a second rod member (2'). Two ends of the growth groove (5) are internally and slidably sleeved by free ends of the first rod member (2) and the second rod member (2'). The growth groove (5) is internally provided with bidirectional memory alloy springs (7, 7') and a container (6) positioned between the two groups of bidirectional memory alloy springs (7, 7'). An orthopedic system for the growth rods capable of actively distracting used for scoliosis and kyphosis posteriors of children or teenagers has following beneficial effects: spinal columns of patients can be actively distracted on a regular basis; without active distraction required, distracting forces can be provided owing to longitudinal growth abilities of the spinal columns for preservation by the characteristic of unidirectional distraction of the growth groove; and growth abilities of the spinal columns are preserved while open surgeries are not necessarily carried out for many times.
Description
Technical field
The present invention relates to a kind of orthopedic medical device, is the inner fixing device of a kind of child of being used for the treatment of or teenagers scoliosis orthomorphia.
Background technology
Due in congenital malformation or abnormal in growth course, may there are protruding, the rear deformities such as protruding of side in human spine.For child or teenager spinal column side, rear protruding patient, straightening technique mainly comprises integration technology and non-fusion technology, cuts both ways.
At present the most generally the Kyphoscoliosis straightening technique of application be " nail or and hook, bar system " that application consists of jointly pedicle screw, pedicle hook, vertebral lamina hook and metal bar carry out the way of escape orthopedic, merge.For low age patient, adopt in backbone correcting the fixedly drawback of integration technology mainly to comprise: 1, to hinder the growth of orthopedic sections spinal column; 2, limit the related thorax of Fusion levels or the growth in abdominal cavity, thereby affect the growth of the heart, lung, abdominal visceral browser, thereby affect patient's physiological function; 3, the spinal column continued growth forwardly that merge at rear, thus there is " crankshaft phenomenon "; 4, because the mobility of Fusion levels is lost, adjacent spinal segments may accelerate regression in contrast, thereby causes the complication such as pain, the regression of adjacent segment spinal column, deformity.
In order to retain the energy for growth of orthopedic sections spinal column, spinal column side, rear protruding non-fusion technology start application with it low age patient.In non-fusion technology, the most conventional application is growing rod technology, its by be fixed on the protruding sections of side two ends pedicle nail or and hook as anchor point, by the relative sliding between the pitman being connected with head, tail pedicle nail respectively, can relatively move, reach and strut orthopedic object, and retained the energy for growth of spinal column.Growing rod technology can be divided into two classes again, one class is by external force, to impel head, the WEILIAN relative sliding of taking over the baton by Repeated Operation, pass through again screw lock, maintain orthopedic effect, the drawback of such technology is to operate by the Repeated Operation that be about half a year interval, easily causes the untoward reaction such as spontaneous fusion of infection, soft tissue defects, spinal column; And another kind of technology can be summarized as passive sliding technology, relative sliding between pitman is that the growing power by spinal column self provides, the adapter relatively moving on coronalplane between constraint slider bar has played the protruding effect increasing the weight of of side of controlling, open report about such technology in clinical practice is less, may be limited relevant to its orthopedic force.
Summary of the invention
The object of the invention is to overcome the above-mentioned deficiency of prior art and provide a kind of novel, being applied to child or teenager, can carry out the growing rod orthopedic inner fixer initiatively strutting by Micro-operation, avoid open surgery repeatedly and strut hypodynamic defect.
The present invention is achieved through the following technical solutions:
A spinal orthosis, comprises growing rod and growth groove, and described growing rod comprises the first rod member and the second rod member, and the free end of described the first rod member and the second rod member is enclosed within the two ends of growth groove slidably; In described growth groove, be provided with two groups of two-way memory alloy springs and the container between described two-way memory alloy spring.
In the present invention, by insert trained two-way memory alloy spring in growth groove, when injecting hot water in described container, heat passes to described two-way memory alloy spring by described container, described two-way memory alloy spring is elongated, thereby promote growing rod, slides; When injecting cold water in container, described two-way memory alloy spring turns cold, and described two-way memory alloy spring shortens, and no longer produces initiatively growth power.Now growing rod slip ability is only provided by spinal growth power.
According to the present invention, described the first rod member and the second rod member also comprise respectively stiff end, on described stiff end, there is respectively pedicle screw and lock nut, for the stiff end of described the first rod member and the second rod member being individually fixed in to the vertebral body at the protruding spinal segments head of side, tail two ends.
According to the present invention, described container can be any container that can hold water, is preferably flexible container, for example rubber bag tank.Described container is connected with tube for transfusion, and described tube for transfusion one end is connected with transfusion port.Described container can be placed in the container cavity between described two groups of two-way memory alloy springs.Described container cavity is provided with a cast opening, for the tube for transfusion process being connected with described container, and provides the passage of inserting described container.Described transfusion port is embedded under the fascia of back.
The free-ended part that is arranged in described growth groove of the first rod member of described growing rod and the second rod member is provided with at least 2 elastic barrier valves, and described elastic barrier valve distributes symmetrically along the periphery of the sustained height of described the first rod member and the second rod member.Described elastic barrier valve is arranged in the free-ended elastic barrier valve slide opening of the first rod member and the second rod member.Described elastic barrier valve consists of spring and stopper.Described spring is arranged in described elastic barrier valve slide opening, and by described stopper block.Described stopper is the surface perpendicular to described the first rod member or the second rod member towards a side of the direction (towards described two-way memory alloy spring one side) that growing rod is shortened.
According to the present invention, the part that described growth groove both sides contact with the second rod member with the first rod member is mated with the profile of described the first rod member and the second rod member.For example, when described the first rod member and the second rod member are round bar, the part that described growth groove both sides contact with the second rod member with the first rod member is pipe.When described the first rod member and the second rod member are rectangular shaft, the part that described growth groove both sides contact with the second rod member with the first rod member is also rectangular tube, and the size of its size and described the first rod member and the second rod member matches.
According to the present invention, in the part contacting with the second rod member with the first rod member in described growth groove both sides, be provided with the unidirectional dentations depression of some levels, the distance between described some levels can not equate or not etc.Its distance can arrange as required, for example, be 1-20mm, is preferably 1-10mm, most preferably is 5mm.In every one-level, several unidirectional dentation depressions are set again on the position corresponding with described elastic barrier valve, thereby make to slide so that described elastic barrier valve while reaching this grade of dentation recess, just enters in corresponding dentation depression when the first rod member and the second rod member.In preferred embodiments, the unidirectional dentation depression of every one-level is distributed in the interior perimeter surface of whole growth groove, thereby forms the unidirectional dentation recessed groove along perimeter surface in whole growth groove.In this utility model, " unidirectional dentation " means the side towards the direction (towards described two-way memory alloy spring one side) that growing rod is shortened of described tooth perpendicular to the surface of described growth groove.
When the first rod member and the second rod member slide into described recess, stopper ejects under the effect of spring, enters described depression.Because described depression is unidirectional dentation, described stopper is stopped by this unidirectional dentation depression, thereby described the first rod member and the second rod member cannot be retracted again.Due to this unidirectional dentation depression, described growing rod can only unidirectionally slide, thereby it can only be extended, and can not shorten.
The degree of depth of described depression is so that described stopper is when sliding into this recess, and the 1/3-2/3 of its whole length enters in this depression.
In use, by spinal orthosis of the present invention is implanted, by the pedicle screw on described the first rod member and the second rod member and lock nut, described the first rod member and the second rod member are individually fixed on the vertebral body at the protruding spinal segments head of side, tail two ends.Slide described the first rod member and the second rod member, thus make described device reach Len req, and fixing by described elastic barrier valve and unidirectional dentation depression, described device can not be shortened.When child or adolescent growth, spinal column is growth thereupon also.Now need to regulate the length of described spinal orthosis.Now, by Minimally Invasive Surgery, in described transfusion port, inject hot water, hot water reaches the container of the container cavity that is arranged in growth groove through tube for transfusion, and then heat is sent to described two groups of two-way memory alloy springs, described two-way memory alloy spring is elongated under heat effect, thereby promote growing rod, slides.Regulate amount and the temperature of injecting hot water, so that the length of described device reaches required value, described elastic barrier valve is stopped by unidirectional dentation depression simultaneously.
The present invention compared with prior art has following features:
1, the present invention considers the feature that underage child growth potential is large, designs a kind ofly can be controlled the growing rod orthopedic system that initiatively struts power is provided by water temperature, makes it regularly to patient's spinal column, carry out active and struts; When initiatively strutting, spinal column longitudinal growth ability also can provide the power of strutting, and the unidirectional feature strutting of grown groove retains; This invention in preservation spinal energy for growth without repeatedly carrying out open surgery.Good orthopedic power can be provided and reduce the generation of the complication such as infection, soft tissue defects, spontaneous fusion.
2, by can controlled memory alloy spring generation deformation, provide the power of strutting, growing rod system can initiatively extend, and than the growing rod system of passive slip, has the larger orthopedic force that struts.
3, by utilizing two-way memory alloy spring that the feature of bidirectional deformation can occur, growth groove can provide repeatedly orthopedic force.
4, by being injected to water pocket from transfusion port through tube for transfusion, hot water or cold water provide hot and cold environmental effect memory alloy spring generation deformation to provide growing power, problem and anesthetic risks that this simple interventional procedure can avoid repeatedly open surgery to bring.
5,, by the design of the unidirectional slip of limiting growth rod in growth groove, when when carrying out initiatively strutting, the while, the deformation that struts being provided by spinal growth can be provided.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present invention;
The growing rod stiff end section of structure that accompanying drawing 2 is the preferred embodiments of the invention;
The growing rod that accompanying drawing 3 is the preferred embodiment of the invention, growth groove schematic cross-sectional view;
The specific embodiment
The present invention is elaborated by following embodiment.But those skilled in the art understand, and the present invention is not limited to following embodiment, and any improvement of making on basis of the present invention and variation, all within protection scope of the present invention.
As shown in Figure 1, this use is novel relates to a kind of growing rod orthopedic inner fixer that can initiatively strut for child or teenager kyphoscoliosis, it comprises growing rod and growth groove 5, described growing rod comprises the first rod member 2 and the second rod member 2 ', and the free end of described the first rod member 2 and the second rod member 2 ' is enclosed within the two ends of growth groove 5 slidably.The stiff end of described the first rod member 2 and the second rod member 2 ' had respectively lock nut 4 and 4 ' and pedicle screw 1 and 1 '.
Shown in Fig. 2 is the growing rod stiff end section of structure of preferred embodiment of the present utility model.In Fig. 2, the first rod member 2 and the second rod member 2 ' are socketed in growth groove 5 slidably.In growth groove 5, be provided with two groups of two-way memory alloy springs 7 and 7 '.
Between described two-way memory alloy spring 7 and 7 ', there is container cavity 12.In container cavity 12, accommodate container 6.As mentioned above, described container 6 can be flexible container, for example rubber bag tank.Described container 6 is connected with transfusion port 6-3 by tube for transfusion 6-1.Transfusion port 6-3 is embedded under the fascia of back.
Described two-way memory alloy spring 7 contacts with the free end end surface of the first rod member 2 and the second rod member 2 ' respectively with 7 ' one end, the other end respectively with the Surface Contact of container cavity 12.
The part that described growth groove both sides contact with the second rod member with the first rod member is mated with the profile of described the first rod member 2 and the second rod member 2 '.
The first rod member 2 of described growing rod and the free-ended part that is arranged in described growth groove of the second rod member 2 ' are provided with some elastic barrier valve chutes.In described chute, be provided with elastic barrier valve 8.Described elastic barrier valve 8 consists of spring 10 and stopper 9.Described stopper 9 by the complete block of spring 10 in chute.In every one-level, described elastic barrier valve 8 distributes symmetrically along the periphery of the sustained height of described the first rod member 2 and the second rod member 2 '.Described stopper 8 is the outer surface perpendicular to described the first rod member 2 or the second rod member 2 ' towards a side of the direction that growing rod is shortened (towards described two-way memory alloy spring 7 and 7 ' a side).
In the part that described growth groove 5 contacts with the second rod member 2 ' with the first rod member 2, be distributed with some levels and be provided with the unidirectional dentations depression 11 of some levels, the distance between described some levels can not equate or not etc.Its distance can arrange as required, for example, be 1-20mm, is preferably 1-10mm, most preferably is 5mm.In every one-level, several unidirectional dentation depressions 11 are set again on the position corresponding with described elastic barrier valve, thereby make to slide so that described elastic barrier valve 8 reaches this grade of dentation while caving in 11 place when the first rod member and the second rod member, just enter in corresponding dentation depression 11.
When the first rod member 2 and the second rod member 2 ' slide into described depression 11 place, stopper 9 ejects under the effect of spring 10, enters described depression 11.Because described depression 11 is unidirectional dentation, described stopper 9 is stopped by this unidirectional dentation depression 11, thereby described the first rod member 2 and the second rod member 2 ' cannot be retracted again.Due to this unidirectional dentation depression, described growing rod can only unidirectionally slide, thereby it can only be extended, and can not shorten.
The degree of depth of described depression 11 is so that described stopper 9 is when sliding into this and cave in 11 place, and the 1/3-2/3 of its whole length enters in this depression 11.
Container 6 is placed into by container cavity opening in the container cavity 12 of growth groove 5 when first operation, and the transfusion port 6-3 joining with container 6 is connected by tube for transfusion 6-2 and is embedded in subcutaneous.Again need to carry out growing rod while initiatively strutting, with syringe, the hot water of about 40-50 ℃ is injected to container 6 from transfusion port, by conduction of heat, heat is passed to the two-way memory alloy spring 7 and 7 ' that is positioned at growth groove 5, make it to occur deformation and produce elasticity energy, promote growing rod and slide in growth groove.
Soft tissue connection between each vertebral body of spinal column struts formation resistance to growing rod, avoids excessively strutting because of growing rod the neurological complication that causes that the excessive tractive of neural spinal cord causes; Elastic barrier valve also can excessively be strutted by limiting growth rod simultaneously; As determined in operation, stop strutting, when growing rod extends but not yet crossed over next stage in zigzag grading design, the hot water in sacculus is extracted out, change and inject approximately 10 degree left and right cold water as water pocket ball.
Claims (10)
1. a spinal orthosis, it comprises growing rod and growth groove (5), described growing rod comprises the first rod member (2) and the second rod member (2 '), and the free end of described the first rod member (2) and the second rod member (2 ') is enclosed within the two ends of growth groove (5) slidably; In described growth groove (5), be provided with two-way memory alloy spring (7,7 ') and be positioned at the container (6) between described two groups of two-way memory alloy springs (7,7 ').
2. spinal orthosis according to claim 1, described the first rod member (2) and the second rod member (2 ') also comprise respectively stiff end, have respectively pedicle screw (1,1 ') and lock nut (4,4 ') on described stiff end.
3. spinal orthosis according to claim 1, described container (6) is connected with tube for transfusion (6-2), and described tube for transfusion (6-2) one end is connected with transfusion port (6-3).
4. spinal orthosis according to claim 3, described container (6) is positioned in the container cavity (12) between described two groups of two-way memory alloy springs (7,7 ').
5. spinal orthosis according to claim 1, the free-ended part that is arranged in described growth groove (5) of described the first rod member (2) and the second rod member (2 ') is provided with at least 2 elastic barrier valves (8), and described elastic barrier valve (8) distributes symmetrically along the periphery of the sustained height of described the first rod member (2) and the second rod member (2 ').
6. spinal orthosis according to claim 5, described elastic barrier valve (8) is arranged in the free-ended elastic barrier valve slide opening of the first rod member (2) and the second rod member (2 '), and described elastic barrier valve (8) consists of spring (10) and stopper (9).
7. according to the spinal orthosis described in claim 1-6 any one, the part that described growth groove (5) both sides contact with the second rod member (2 ') with the first rod member (2) is mated with the profile of described the first rod member (2) and the second rod member (2 ').
8. spinal orthosis according to claim 6, is provided with some unidirectional dentation depressions of level (11) in described growth groove (5) both sides with the first rod member (2) with the second rod member (2 ') in the part contacting.
9. spinal orthosis according to claim 8, the distance between described some unidirectional dentations depressions of level (11) does not equate or not etc. and be 1-20mm.
10. spinal orthosis according to claim 8, the degree of depth of wherein said depression is so that described stopper is when sliding into this recess, and the 1/3-2/3 of its whole length enters in this depression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850868.1U CN203873853U (en) | 2013-12-20 | 2013-12-20 | Orthopedic device for growth rods capable of actively distracting used for scoliosis and kyphosis posteriors of children or teenagers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850868.1U CN203873853U (en) | 2013-12-20 | 2013-12-20 | Orthopedic device for growth rods capable of actively distracting used for scoliosis and kyphosis posteriors of children or teenagers |
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| Publication Number | Publication Date |
|---|---|
| CN203873853U true CN203873853U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320850868.1U Withdrawn - After Issue CN203873853U (en) | 2013-12-20 | 2013-12-20 | Orthopedic device for growth rods capable of actively distracting used for scoliosis and kyphosis posteriors of children or teenagers |
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| CN (1) | CN203873853U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104323845A (en) * | 2014-11-07 | 2015-02-04 | 常州亨杰医疗器械有限公司 | Spine dynamic growth rod |
| CN104720880A (en) * | 2013-12-20 | 2015-06-24 | 中国医学科学院北京协和医院 | Scoliosis and kyphosis posterior approach growing bar correcting device capable of being expanded actively and used for children or teenagers |
| CN106963466A (en) * | 2017-04-10 | 2017-07-21 | 上海市同仁医院 | A kind of ratchet-like automatic growth valve |
| CN108703798A (en) * | 2018-08-13 | 2018-10-26 | 北京大学人民医院 | The noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic |
-
2013
- 2013-12-20 CN CN201320850868.1U patent/CN203873853U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104720880A (en) * | 2013-12-20 | 2015-06-24 | 中国医学科学院北京协和医院 | Scoliosis and kyphosis posterior approach growing bar correcting device capable of being expanded actively and used for children or teenagers |
| CN104323845A (en) * | 2014-11-07 | 2015-02-04 | 常州亨杰医疗器械有限公司 | Spine dynamic growth rod |
| CN106963466A (en) * | 2017-04-10 | 2017-07-21 | 上海市同仁医院 | A kind of ratchet-like automatic growth valve |
| CN108703798A (en) * | 2018-08-13 | 2018-10-26 | 北京大学人民医院 | The noninvasive growing rod of contactless electromagnetic drive for scoliosis orthopedic |
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