CN109276298A - A kind of novel marrow combination of inner and outside rope sheave Limb lengthening device - Google Patents
A kind of novel marrow combination of inner and outside rope sheave Limb lengthening device Download PDFInfo
- Publication number
- CN109276298A CN109276298A CN201810903499.5A CN201810903499A CN109276298A CN 109276298 A CN109276298 A CN 109276298A CN 201810903499 A CN201810903499 A CN 201810903499A CN 109276298 A CN109276298 A CN 109276298A
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- fixed
- marrow
- rope
- gear
- gearcase
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
Abstract
A kind of novel marrow combination of inner and outside rope sheave Limb lengthening device, is related to a kind of orthopedic medical device.Two guide rods are fixed between fixed synosteosis part one and gearcase.Movable synosteosis part sliding is on two guide rods, lead screw is screwed with marrow inner thread sleeve, lead screw connecting pin turns through axle bed in marrow and is fixed with driven gear, hollow base is fixed on fixed synosteosis part two, rope sheave gear frame is fixed on hollow base, rotation setting sprocket drive spindle between gearcase and hollow base, gear shaft is located at one end in gearcase and is fixedly installed with transmission gear, transmission gear is engaged with driven gear, rope sheave gear frame can gear shaft be located in hollow base one end and rotate, fixed synosteosis part one, movable synosteosis part, gearcase and fixed synosteosis part two are respectively fitted with more bone nails, marrow inner thread sleeve is fixed, axle bed is fixed in marrow.The lengthening of bone can be constantly carried out, treatment time is shortened, mitigates patient suffering.
Description
Technical field
The present invention relates to a kind of orthopedic medical device, especially a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device.
Background technique
Bone lengthening is current treatment shortening deformity of extremity, restores or improve a kind of effective ways of limb function.Wherein
Long bone metaphysis callus lengthening art be a kind of extending length is big, knitting is fast, damage less, opposite few intercurrent disease, it is simple easily
Capable common extension osteotomy method.It refers to retains periosteum after metaphysis bone, and between very strong osteogenic ability in periosteum
Mesenchymal cells can make bone healing by forming poroma, apply a slow continuous tractive effort by Limb lengthening device at this time,
The poroma formed at osteotomy can be made slowly to extend to achieve the purpose that Limb lengthening.
Current Limb lengthening device generallys use fixed mode outside skin, such as Ilizarov external fixing rack and by its hair
External fixation devices derived from exhibition, annular external fixing rack, combination external fixing rack etc., they all must be by percutaneous pinning (nail) even
Connect bulky external fixer, long periods of wear not only inconvenient activity, but also easily cause anchylosis, the infection of needle (nail) road, after
Send out the sequelae such as osteomyelitis.
Authorization Notice No. CN205458975U, it is authorized announcement date on August 17th, 2016, entitled " fixed in Limb lengthening to fill
Set " utility model patent, backbone surface is directly anchored to by bone nail, overcomes and is lacked by the way that percutaneous pinning (nail) is fixed outside
It falls into, mitigates patient suffering, there is certain moulding ability.But the device can not constantly control extending length when being adjusted, and prolong
Length has very big randomness, once certain extending length is too long or too short, it will and increase poroma and form the time, to prolong
Long patient's treatment time, efficiency is lower, and reliability and controllability are poor.
Summary of the invention
To solve deficiency existing for background technique, the present invention provides a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device.
Realize that above-mentioned purpose, the present invention take following technical proposals: a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device,
Including fixed synosteosis part one, movable synosteosis part, gearcase, lead screw, fixed synosteosis part two, hollow base, rope sheave gear frame
And two guide rods, two guide rods are set side by side and are fixedly mounted between fixed synosteosis part one and gearcase, described
Movable synosteosis part is slidably mounted on two guide rods, and the lead screw is set to along its length between two guide rods, lead screw rotation
It is connected to marrow inner thread sleeve, the marrow inner thread sleeve is correspondingly arranged with movable synosteosis part, and lead screw connecting pin turns through marrow
Interior axle bed is simultaneously fixedly installed with driven gear, and axle bed is correspondingly arranged with gearcase in the marrow, on the fixed synosteosis part two
It is fixedly installed with hollow base, rope sheave gear frame is fixedly installed on the hollow base and is equipped with gearcase, the gear
Rotation setting sprocket drive spindle, the gear shaft are located at one end in gearcase and are fixedly installed with transmission gear between box and hollow base,
The transmission gear is engaged with the driven gear, the rope sheave gear frame can gear shaft be located at one end in hollow base
Rotation, the fixed synosteosis part one, movable synosteosis part, gearcase and fixed synosteosis part two are respectively fitted with more bones
Nail, wherein marrow inner thread sleeve can be fixed in more bone nails corresponding with movable synosteosis part, corresponding with gearcase more
Axle bed in marrow can be fixed in root bone nail.
Compared with prior art, the beneficial effects of the present invention are: the present invention is driven by rope sheave gear frame combination gear box
The mechanism of lead screw adjusts bone extending length, and for minimum extending length up to 0.2mm, precision is high, and hand spinning rope bar is convenient to patient
The lengthening of bone is constantly carried out, quickly extends convenient for increasing stimulation, greatly shortens treatment time, using the marrow combination of inner and outside
Fixed form removes device outside marrow after extension, compact-sized, strong applicability, without fixed outside skin, mitigation patient
Pain.
Detailed description of the invention
Fig. 1 is the overall structure axonometric drawing of novel marrow combination of inner and outside rope sheave Limb lengthening device of the invention；
Fig. 2 is schematic view of the front view of the invention；
Fig. 3 is the drive mechanism axonometric drawing of rope sheave gear frame and lead screw of the invention；
Fig. 4 is the axonometric drawing of rope sheave gear frame of the invention when locking device is in the lock state；
Fig. 5 is the axonometric drawing of rope sheave gear frame of the invention when locking device is in solution open state；
Fig. 6 is the axonometric drawing of two wirerope of rope sheave gear frame of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, is clearly and completely retouched to the technical solution in the present invention
It states, it is clear that described embodiment is only a part of the embodiment of invention, instead of all the embodiments, based in the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
It shall fall within the protection scope of the present invention.
Specific embodiment 1: the invention discloses a kind of novel marrow combination of inner and outside rope sheave Limb lengthenings as shown in Fig. 1 ~ Fig. 6
Device, including fixed synosteosis part 1, movable synosteosis part 3, gearcase 4, lead screw 5, fixed synosteosis part 27, hollow base 8,
Rope sheave gear frame and two guide rods 1, two guide rods 1 are set side by side and are fixedly mounted on fixed synosteosis part 1 and tooth
It takes turns between box 4, the activity synosteosis part 3 is slidably mounted on two guide rods 1, and the lead screw 5 is set to two along its length
Between root guide rod 1, lead screw 5 is screwed with marrow inner thread sleeve 5-1, and the marrow inner thread sleeve 5-1 is corresponding with movable synosteosis part 3
Setting, 5 connecting pin of lead screw turn through axle bed 6 in marrow and are fixedly installed with driven gear 5-2, axle bed 6 and gear in the marrow
Box 4 is correspondingly arranged, and hollow base 8 is fixedly installed on the fixed synosteosis part 27, is fixedly installed with rope on the hollow base 8
Wheel gear frame is simultaneously equipped with gearcase 4, and rotation setting sprocket drive spindle 4-2, described between the gearcase 4 and hollow base 8
Gear shaft 4-2 is located at one end in gearcase 4 and is fixedly installed with transmission gear 4-1, the transmission gear 4-1 and the driven gear
5-2 is engaged, the rope sheave gear frame can gear shaft 4-2 be located in hollow base 8 one end and rotate, the fixed synosteosis
Part 1, movable synosteosis part 3, gearcase 4 and fixed synosteosis part 27 are respectively fitted with more bone nails 9, wherein with movable bone
Marrow inner thread sleeve 5-1 can be fixed in the corresponding more bone nails 9 of engaging member 3, and more bone nails 9 corresponding with gearcase 4 can
Axle bed 6 in marrow is fixed.
Specific embodiment 2: as shown in Figure 2,3, 4, present embodiment be specific embodiment one is made it is further
Illustrate, the rope sheave gear frame includes rope roll 13, hand spinning rope bar 14 and two wirerope 15,13 bottom end of rope roll and hollow base
8 fixed connection settings, 13 top of rope roll is fixedly installed with rope bar axle bed 13-1,14 middle position of hand spinning rope bar and the rope
Bar axle bed 13-1 rotation connection, two wirerope, 15 one end is fixed respectively and winds around 14 two sides of hand spinning rope bar, and two
15 other end of root wirerope penetrates in hollow base 8 through rope roll 13, while fixing respectively and winding around gear shaft 4-2 and being located at
One end corresponding position in hollow base 8, hand spinning rope bar 14, gear shaft 4-2 and 5 diameter of lead screw are identical.
Specific embodiment 3: as shown in fig. 6, present embodiment is made furtherly to specific embodiment two
It is bright, two wirerope 15 respectively to two side directions in spring like wind, two 15 the same end winding directions of wirerope on the contrary,
And every 15 both ends winding direction of wirerope is identical.
Specific embodiment 4: as shown in Figure 4,5, present embodiment is made furtherly to specific embodiment two
Bright, the hand spinning rope bar 14 is equipped with anti-skid chequer.
Specific embodiment 5: as shown in Fig. 3,4,5, present embodiment be specific embodiment three or four is made into
One step explanation, the adjacent rope bar axle bed 13-1 position fixing sleeve of the hand spinning rope bar 14 are equipped with a dial disc 16, the scale
It can be locked by locking device between disk 16 and rope bar axle bed 13-1.
Specific embodiment 6: as shown in Figure 4,5, present embodiment is made furtherly to specific embodiment five
Bright, the locking device includes positioning pin 17 and lock cover 18, and the dial disc 16 is angularly uniform along its circumferencial direction
Equipped with multiple positioning jacks, any positioning jack of the rope bar axle bed 13-1 and dial disc 16, which is correspondingly provided with one, to be determined
Position pin perforation, 17 middle slip of positioning pin are inserted into the mounting hole that rope bar axle bed 13-1 is opened up, and 17 one end of positioning pin is anti-
There is connection-peg to bending and any positioning jack of dial disc 16 and the positioning pin of rope bar axle bed 13-1 can be worn
Hole inserting positioning, the lock cover 18 are mounted on rope bar axle bed 13-1 and can be pressed positioning pin 17 by lock-screw
Tightly.
Specific embodiment 7: present embodiment is made furtherly to specific embodiment six as shown in Fig. 3,5
Bright, multiple positioning jack quantity of the dial disc 16 are 10 and are successively arranged number-mark.
Specific embodiment 8: as shown in figure 3, present embodiment is made furtherly to specific embodiment one
Bright, the gear ratio of the transmission gear 4-1 and the driven gear 5-2 are 2:1, and the screw pitch of the lead screw 5 is 1mm.
In using the present invention, first transverse cuts go out a gap (gap size on the bone wall of patient side knochenbruch 12
Transmission gear 4-1 should be met to engage with the effective of driven gear 5-2), 5 connecting pin of lead screw is together with driven gear 5-2 and marrow inner shaft
Seat 6 is inserted into the fracture of side knochenbruch 12, and wherein driven gear 5-2 is corresponding with gap position, covers on marrow inner thread sleeve 5-1
Osteotomy section 11 is filled, bone nail 9 is utilized respectively later and gearcase 4 and fixed synosteosis part 27 is fixed on side knochenbruch 12, will live
Dynamic synosteosis part 3 is fixed in osteotomy section 11, and fixed synosteosis part 1 is fixed on other side knochenbruch 10, guarantees that rope sheave passes
Between moving frame, gearcase 4 and lead screw 5 be driven effectively, and in marrow inner thread sleeve 5-1 and marrow axle bed 6 respectively by corresponding bone
Nail 9 is fixed, and hand spinning rope bar 14 is located at outside patient skin, osteotomy section 11 and 10 gap setting of the other side knochenbruch when initial,
Can be manually rotated hand spinning rope bar 14 can control lead screw 5 to rotate, when lead screw 5 rotates marrow inner thread sleeve 5-1 can drive osteotomy section 11 into
Row axial movement, two guide rods 1 can prevent during extension osteotomy section 11 to occur angulation displacement, transmission gear 4-1 with it is driven
The gear ratio of gear 5-2 is 2:1, and the screw pitch of lead screw 5 is 1mm, is equal to lead it is found that 5 lead of lead screw by the screw pitch of single thread
For 1mm, therefore, if manual 360 ° of rotation hand spinning ropes bar 14 equally makes transmission gear 4-1 be rotated by 360 ° (hand spinning rope bar 14, tooth
Wheel shaft 4-2 and 5 diameter of lead screw are identical), then driven gear 5-2 rotates 720 °, i.e. lead screw 5 rotates 720 °, marrow inner thread sleeve 5-1
2mm is moved axially, and dial disc 16 is angularly uniformly provided with 10 positioning jacks along its circumferencial direction, i.e. hand spinning rope bar 14 is every
Rotating a hole location, then marrow inner thread sleeve 5-1 drives the mobile 0.2mm of osteotomy section 11, to realize that Limb lengthening acts on, have compared with
High precision can position dial disc 16 and rope bar axle bed 13-1 by locking device, highly reliable, two wirerope
15 the same end winding directions on the contrary, and every 15 both ends winding direction of wirerope it is identical, effect is being capable of positive and negative Double-directional rotary hand
Spinning rope bar 14 is conveniently adjusted caused by operation error to change the moving direction of marrow inner thread sleeve 5-1 and extends overscale problems,
Axle bed 6 forms intramedullary devices, remaining component groups pulpefaction exterior in lead screw 5, marrow inner thread sleeve 5-1, driven gear 5-2 and marrow
It sets, all removes device outside marrow after extension.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in the form of others dress body.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that by all in the meaning and scope for the condition of equivalent for falling in claim
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device, it is characterised in that: including fixed synosteosis part one (2), activity
Synosteosis part (3), gearcase (4), lead screw (5), fixed synosteosis part two (7), hollow base (8), rope sheave gear frame and two
Guide rod (1), two guide rods (1) are set side by side and are fixedly mounted between fixed synosteosis part one (2) and gearcase (4),
The activity synosteosis part (3) is slidably mounted on two guide rods (1), and the lead screw (5) is set to two along its length and leads
Between bar (1), lead screw (5) is screwed with marrow inner thread sleeve (5-1), the marrow inner thread sleeve (5-1) and movable synosteosis part
(3) it is correspondingly arranged, lead screw (5) connecting pin turns through axle bed in marrow (6) and is fixedly installed with driven gear (5-2), the marrow
Interior axle bed (6) is correspondingly arranged with gearcase (4), is fixedly installed with hollow base (8) on the fixed synosteosis part two (7), described
It is fixedly installed with rope sheave gear frame on hollow base (8) and is equipped with gearcase (4), the gearcase (4) and hollow base (8)
Between rotation setting sprocket drive spindle (4-2), the gear shaft (4-2) is located at gearcase (4) interior one end and is fixedly installed with driving cog
It takes turns (4-1), the transmission gear (4-1) is engaged with the driven gear (5-2), and the rope sheave gear frame can drive gear
Axis (4-2) is located at the interior one end rotation of hollow base (8), the fixed synosteosis part one (2), movable synosteosis part (3), gearcase
(4) and fixed synosteosis part two (7) are respectively fitted with more bone nails (9), wherein more corresponding with movable synosteosis part (3)
Marrow inner thread sleeve (5-1) can be fixed in bone nail (9), and more bone nails (9) corresponding with gearcase (4) can be to axle bed in marrow
(6) it is fixed.
2. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device according to claim 1, it is characterised in that: the rope sheave
Gear frame includes rope roll (13), hand spinning rope bar (14) and two wirerope (15), and rope roll (13) bottom end and hollow base (8) are solid
Fixed connection setting, rope roll (13) top is fixedly installed with rope bar axle bed (13-1), the hand spinning rope bar (14) middle position and institute
Rope bar axle bed (13-1) rotation connection is stated, described two wirerope (15) one end is fixed respectively and winds around hand spinning rope bar
(14) two sides, two wirerope (15) other ends penetrate in hollow base (8) through rope roll (13), while fixing and closely twining respectively
It is wound on gear shaft (4-2) and is located at the interior one end corresponding position of hollow base (8), hand spinning rope bar (14), gear shaft (4-2) and lead screw (5)
Diameter is identical.
3. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device according to claim 2, it is characterised in that: described two
Wirerope (15) is wound to two side directions in spring like respectively, and two wirerope (15) the same end winding directions are on the contrary, and every
Wirerope (15) both ends winding direction is identical.
4. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device according to claim 2, it is characterised in that: the hand rotation
Bar (14) are restricted equipped with anti-skid chequer.
5. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device according to claim 3 or 4, it is characterised in that: described
Adjacent rope bar axle bed (13-1) the position fixing sleeve of hand spinning rope bar (14) is equipped with a dial disc (16), the dial disc (16)
It can be locked by locking device between rope bar axle bed (13-1).
6. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device according to claim 5, it is characterised in that: the locking
Device includes positioning pin (17) and lock cover (18), and the dial disc (16) is angularly uniformly provided with more along its circumferencial direction
A positioning jack, rope bar axle bed (13-1) and any positioning jack of dial disc (16) are correspondingly provided with a positioning
Pin perforation, positioning pin (17) middle slip are inserted into the mounting hole that rope bar axle bed (13-1) opens up, positioning pin (17) one
End back-flexing has connection-peg and can be by any positioning jack of dial disc (16) and the described of bar axle bed (13-1) of restricting
Positioning pin perforation inserting positioning, the lock cover (18) are mounted on rope bar axle bed (13-1) by lock-screw and can be to fixed
Position pin (17) is compressed.
7. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device according to claim 6, it is characterised in that: the scale
Multiple positioning jack quantity of disk (16) are 10 and are successively arranged number-mark.
8. a kind of novel marrow combination of inner and outside rope sheave Limb lengthening device according to claim 1, it is characterised in that: the transmission
The gear ratio of gear (4-1) and the driven gear (5-2) are 2:1, and the screw pitch of the lead screw (5) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903499.5A CN109276298B (en) | 2018-08-09 | 2018-08-09 | Intramedullary and extramedullary combined rope sheave bone lengthening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903499.5A CN109276298B (en) | 2018-08-09 | 2018-08-09 | Intramedullary and extramedullary combined rope sheave bone lengthening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109276298A true CN109276298A (en) | 2019-01-29 |
| CN109276298B CN109276298B (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810903499.5A Active CN109276298B (en) | 2018-08-09 | 2018-08-09 | Intramedullary and extramedullary combined rope sheave bone lengthening device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109276298B (en) |
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| CN108309423A (en) * | 2018-02-06 | 2018-07-24 | 重庆医科大学附属永川医院 | Fixed traction device in a kind of bone |
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| Publication number | Publication date |
|---|---|
| CN109276298B (en) | 2020-12-18 |
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