CN109259837A - A kind of novel rope sheave Limb lengthening device - Google Patents
A kind of novel rope sheave Limb lengthening device Download PDFInfo
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- CN109259837A CN109259837A CN201810905061.0A CN201810905061A CN109259837A CN 109259837 A CN109259837 A CN 109259837A CN 201810905061 A CN201810905061 A CN 201810905061A CN 109259837 A CN109259837 A CN 109259837A
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- fixed
- lead screw
- rope
- synosteosis
- rope sheave
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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
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/60—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like for external osteosynthesis, e.g. distractors, contractors
- A61B17/66—Alignment, compression or distraction mechanisms
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
A kind of novel rope sheave Limb lengthening device, is related to a kind of orthopedic medical device.Two guide rods are fixedly mounted between fixed synosteosis part one and fixed synosteosis part two, movable synosteosis part is slidably mounted on two guide rods, lead screw one end is inserted into the preset axis hole of fixed one corresponding position of synosteosis part by thrust ball bearing, movable synosteosis part is equipped with the screw hole matched with lead screw and connect with threads of lead screw, fixed two outer surface of synosteosis part is axially recessed with arc axial trough along lead screw, cover board axle sleeve includes the ceiling plate portion and shaft sleeve part being made into integration, ceiling plate portion is by the fixed lid of screw mounted in fixed two outer surface of synosteosis part, shaft sleeve part correspondence is inserted into arc axial trough, the lead screw other end is rotatably arranged in shaft sleeve part, rope sheave gear frame is fixed in ceiling plate portion and the lead screw other end can be driven to carry out positive and negative Double-directional rotary.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 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 rope sheave Limb lengthening device.
Realize that above-mentioned purpose, the present invention take following technical proposals: a kind of novel rope sheave Limb lengthening device, including fixed bone
Engaging member one, movable synosteosis part, fixed synosteosis part two, lead screw, cover board axle sleeve, rope sheave gear frame and two guide rods, institute
It states two guide rods to be set side by side and be fixedly mounted between fixed synosteosis part one and fixed synosteosis part two, the activity bone knot
Component is slidably mounted on two guide rods, and the lead screw is axially disposed among two guide rods, and lead screw one end passes through thrust ball
Bearing is inserted into the preset axis hole of fixed one corresponding position of synosteosis part, and movable synosteosis part is equipped with and matches with lead screw
Screw hole and connect with threads of lead screw, fixed two outer surface of synosteosis part is axially recessed with arc axial trough along lead screw, described
Cover board axle sleeve includes the ceiling plate portion and shaft sleeve part being made into integration, and the ceiling plate portion is by the fixed lid of screw mounted in fixed synosteosis part
Two outer surfaces, the shaft sleeve part correspondence are inserted into the arc axial trough, and the lead screw other end is rotatably arranged in shaft sleeve part, described
Rope sheave gear frame is fixed in ceiling plate portion and the other end described in lead screw can be driven to carry out positive and negative Double-directional rotary.
Compared with prior art, the beneficial effects of the present invention are: the present invention combines threaded connection by rope sheave gear frame
The mechanism of movable synosteosis part and lead screw adjusts bone extending length, is mounted on outside bone the blood that will not be destroyed in ossis
Supply, for minimum extending length up to 0.1mm, precision is high, the convenient lengthening that bone is constantly carried out to patient of hand spinning rope bar,
Quickly extend convenient for increasing to stimulate, greatly shortens treatment time, compact-sized, strong applicability, good economy performance, easily operated, nothing
It needs to fix outside skin, mitigates patient suffering, the moving direction of movable synosteosis part is adjustable, is conveniently adjusted caused by operation error and extends
Overscale problems.
Detailed description of the invention
Fig. 1 is the overall structure axonometric drawing of novel rope sheave Limb lengthening device of the invention；
Fig. 2 is the assembling structure axonometric drawing of rope sheave gear frame and lead screw of the invention；
Fig. 3 is the fractionation structure axonometric drawing of fixation synosteosis part two and cover board axle sleeve of the invention；
Fig. 4 is the axonometric drawing of rope sheave gear frame of the invention；
Fig. 5 is the axonometric drawing of two wirerope of rope sheave gear frame of the invention；
Fig. 6 is the schematic diagram of dial disc 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 rope sheave Limb lengthening devices as shown in Fig. 1 ~ Fig. 6, including
Fixed synosteosis part 1, movable synosteosis part 3, fixed synosteosis part 24, lead screw 5, cover board axle sleeve 6, rope sheave gear frame and
Two guide rods 1, two guide rods 1 be set side by side and be fixedly mounted on fixed synosteosis part 1 and fixed synosteosis part 24 it
Between, the activity synosteosis part 3 is slidably mounted on two guide rods 1, and the lead screw 5 is axially disposed among two guide rods 1,
5 one end of lead screw is inserted into the preset axis hole of fixed one 2 corresponding position of synosteosis part by thrust ball bearing 5-1, activity
Synosteosis part 3 is equipped with the screw hole matched with lead screw 5 and is threadedly coupled with lead screw 5, the fixed 24 outer surface edge of synosteosis part
Lead screw 5 is axial to be recessed with arc axial trough, and the cover board axle sleeve 6 includes the ceiling plate portion 6-1 being made into integration and shaft sleeve part 6-2, described
Ceiling plate portion 6-1 by the fixed lid of screw mounted in fixed 24 outer surface of synosteosis part, the shaft sleeve part 6-2 is corresponding be inserted into it is described
In arc axial trough, 5 other end of lead screw is rotatably arranged in shaft sleeve part 6-2, and the rope sheave gear frame is fixed on ceiling plate portion 6-1 simultaneously
The other end described in lead screw 5 can be driven to carry out positive and negative Double-directional rotary.
Specific embodiment 2: as shown in Figure 2,3, present embodiment is made furtherly to specific embodiment one
Bright, the rope sheave gear frame includes rope roll 7, hand spinning rope bar 8 and two wirerope 9, and 7 bottom end of rope roll and ceiling plate portion 6-1 are solid
Fixed connection setting, 7 top of rope roll are fixedly installed with rope bar axle bed 7-1,8 middle position of hand spinning rope bar and the rope bar axle bed
7-1 rotation connection, two wirerope, 9 one end is fixed respectively and winds around 8 two sides of hand spinning rope bar, two wirerope 9
The other end penetrates in ceiling plate portion 6-1 through rope roll 7, while fixing respectively and winding around the other end described in lead screw 5 and corresponding to position
It sets.
Specific embodiment 3: as shown in figure 5, present embodiment is made furtherly to specific embodiment two
It is bright, two wirerope 9 respectively to two side directions in spring like wind, two 9 the same end winding directions of wirerope on the contrary, and
Every 9 both ends winding direction of wirerope is identical.
Specific embodiment 4: as shown in Fig. 2, present embodiment is made furtherly to specific embodiment two
Bright, the hand spinning rope bar 8 is equipped with anti-skid chequer.
Specific embodiment 5: as shown in figure 4, present embodiment is to specific embodiment three or specific embodiment four
The further explanation made, the adjacent rope bar axle bed 7-1 position fixing sleeve of the hand spinning rope bar 8 are equipped with a dial disc 10, institute
Stating can be locked between dial disc 10 and rope bar axle bed 7-1 by locking device.
Specific embodiment 6: present embodiment is made furtherly to specific embodiment five as shown in Fig. 4,6
Bright, the locking device includes positioning pin 11 and lock cover 12, and the dial disc 10 is angularly uniform along its circumferencial direction
Equipped with multiple positioning jack 10-1, the rope bar axle bed 7-1 and any positioning jack 10-1 are correspondingly provided with a positioning pin
Perforation, 11 middle slip of positioning pin are inserted into the mounting hole that rope bar axle bed 7-1 is opened up, 11 one end back-flexing of positioning pin
There is connection-peg and the positioning pin perforation inserting of any positioning jack 10-1 and rope bar axle bed 7-1 can be positioned, it is described
Lock cover 12 is mounted on rope bar axle bed 7-1 and can be compressed to positioning pin 11 by lock-screw.
Specific embodiment 7: as shown in fig. 6, present embodiment is made furtherly to specific embodiment six
Bright, multiple positioning jack 10-1 quantity of the dial disc 10 are 10 and are successively arranged number-mark 10-2.
Specific embodiment 8: as shown in Figure 1, present embodiment is made furtherly to specific embodiment two
Bright, the lead screw 5 is identical as hand spinning rope 8 diameters of bar, and the screw pitch of lead screw 5 is 1mm.
In using the present invention, fixed synosteosis part 1 is fixed on by bone nail respectively with fixed synosteosis part 24 disconnected
Bone backbone both ends, while movable synosteosis part 3 is fixed in osteotomy by bone nail, fixed synosteosis part 1, movable synosteosis part
3 and fixed synosteosis part 24 be equipped with the mounting hole passed through for bone nail, guaranteeing to be driven between rope sheave gear frame and lead screw 5 has
Effect, is obtained by force analysis, withstood forces between lead screw 5 and fixed synosteosis part 1 it is larger, therefore in lead screw 5 and fixed bone knot
A thrust ball bearing 5-1 is installed between component 1 additional to bear axial load, the reliability of mechanism will be significantly greatly increased, when initial
Keeping osteotomy, wherein side fracture gap setting, hand spinning rope bar 8 stay outside patient skin with knochenbruch backbone, manual 360 ° of rotations
Spinning rope bar 8 is changed hands, two wirerope 9 drive equally 360 ° (lead screw 5 is identical as hand spinning rope 8 diameters of bar) of rotation of lead screw 5, lead screw 5
Screw pitch be 1mm, therefore, lead is equal to by the screw pitch of single thread it is found that 5 lead of lead screw is 1mm, i.e., movable synosteosis part 3
Osteotomy is driven to move axially 1mm, and dial disc 10 is angularly uniformly provided with 10 positioning jacks along its circumferencial direction, i.e. hand revolves
Then movable synosteosis part 3 drives osteotomy to move axially 0.1mm to one hole location of the every rotation of bar 8 of restricting, thus realize that Limb lengthening acts on, tool
There is higher precision, dial disc 10 and rope bar axle bed 7-1 can be positioned by locking device, highly reliable, two steel
9 the same end winding direction of cord on the contrary, and every 9 both ends winding direction of wirerope it is identical, effect is being capable of positive and negative Double-directional rotary
Hand spinning rope bar 8 is conveniently adjusted caused by operation error to the moving direction of change activity synosteosis part 3 and extends overscale problems,
Structure is simple, easy to use, and to be convenient for assembling, two pieces points of bar inserting docking compositions are can be used in hand spinning rope bar 8, passes through pin shaft
Inserting positioning.
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 rope sheave Limb lengthening device, it is characterised in that: including fixed synosteosis part one (2), movable synosteosis part
(3), fixed synosteosis part two (4), lead screw (5), cover board axle sleeve (6), rope sheave gear frame and two guide rods (1), described two
Guide rod (1) is set side by side and is fixedly mounted between fixed synosteosis part one (2) and fixed synosteosis part two (4), the activity
Synosteosis part (3) is slidably mounted on two guide rods (1), and the lead screw (5) is axially disposed among two guide rods (1), silk
Thick stick (5) one end is inserted into the preset axis hole of fixed synosteosis part one (2) corresponding position by thrust ball bearing (5-1),
Movable synosteosis part (3) is equipped with the screw hole matched with lead screw (5) and is threadedly coupled with lead screw (5), the fixed synosteosis part
Two (4) outer surfaces are axially recessed with arc axial trough along lead screw (5), and the cover board axle sleeve (6) includes the ceiling plate portion (6- being made into integration
1) and shaft sleeve part (6-2), the ceiling plate portion (6-1) by the fixed lid of screw mounted in fixed synosteosis part two (4) outer surface, it is described
Shaft sleeve part (6-2) correspondence is inserted into the arc axial trough, and lead screw (5) other end is rotatably arranged in shaft sleeve part (6-2), described
Rope sheave gear frame is fixed on ceiling plate portion (6-1) and lead screw (5) other end can be driven to carry out positive and negative Double-directional rotary.
2. a kind of novel rope sheave Limb lengthening device according to claim 1, it is characterised in that: the rope sheave gear frame includes
Rope roll (7), hand spinning rope bar (8) and two wirerope (9), rope roll (7) bottom end are connected to setting with ceiling plate portion (6-1) fixation,
Rope roll (7) top is fixedly installed with rope bar axle bed (7-1), the hand spinning rope bar (8) middle position and the rope bar axle bed (7-1)
Rotation connection, described two wirerope (9) one end is fixed respectively and winds around hand spinning rope bar (8) two sides, two wirerope
(9) other end penetrates in ceiling plate portion (6-1) through rope roll (7), while fixed respectively and to wind around lead screw (5) described another
Hold corresponding position.
3. a kind of novel rope sheave Limb lengthening device according to claim 2, it is characterised in that: two wirerope (9)
It is wound respectively to two side directions in spring like, two wirerope (9) the same end winding directions are on the contrary, and every wirerope (9) two
Hold winding direction identical.
4. a kind of novel rope sheave Limb lengthening device according to claim 2, it is characterised in that: the hand spinning rope bar (8) sets
There is anti-skid chequer.
5. a kind of novel rope sheave Limb lengthening device according to claim 3 or 4, it is characterised in that: the hand spinning rope bar (8)
Adjacent rope bar axle bed (7-1) position fixing sleeve is equipped with a dial disc (10), the dial disc (10) and rope bar axle bed (7-
1) it can be locked by locking device between.
6. a kind of novel rope sheave Limb lengthening device according to claim 5, it is characterised in that: the locking device includes fixed
Position pin (11) and lock cover (12), the dial disc (10) are angularly uniformly provided with multiple positioning jacks along its circumferencial direction
(10-1), the rope bar axle bed (7-1) and any positioning jack (10-1) are correspondingly provided with a positioning pin and perforate, described fixed
Position pin (11) middle slip is inserted into the mounting hole that rope bar axle bed (7-1) opens up, and positioning pin (11) one end back-flexing has slotting
Connector can simultaneously position the perforation inserting of the positioning pin of any positioning jack (10-1) and rope bar axle bed (7-1), described
Lock cover (12) is mounted on rope bar axle bed (7-1) and can be compressed to positioning pin (11) by lock-screw.
7. a kind of novel rope sheave Limb lengthening device according to claim 6, it is characterised in that: the dial disc (10)
Multiple positioning jack (10-1) quantity are 10 and are successively arranged number-mark (10-2).
8. a kind of novel rope sheave Limb lengthening device according to claim 2, it is characterised in that: the lead screw (5) and hand revolve
Bar (8) diameter of restricting is identical, and the screw pitch of lead screw (5) is 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905061.0A CN109259837B (en) | 2018-08-09 | 2018-08-09 | Rope wheel bone extension fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810905061.0A CN109259837B (en) | 2018-08-09 | 2018-08-09 | Rope wheel bone extension fixture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109259837A true CN109259837A (en) | 2019-01-25 |
| CN109259837B CN109259837B (en) | 2021-01-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810905061.0A Active CN109259837B (en) | 2018-08-09 | 2018-08-09 | Rope wheel bone extension fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109259837B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109907786A (en) * | 2019-04-16 | 2019-06-21 | 埃客(上海)医用设备有限公司 | A kind of transverse direction bone handling device |
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| CN109907786A (en) * | 2019-04-16 | 2019-06-21 | 埃客(上海)医用设备有限公司 | A kind of transverse direction bone handling device |
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| Publication number | Publication date |
|---|---|
| CN109259837B (en) | 2021-01-01 |
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