CN205391227U - Marrow endoskeleton tractor - Google Patents
Marrow endoskeleton tractor Download PDFInfo
- Publication number
- CN205391227U CN205391227U CN201620184685.4U CN201620184685U CN205391227U CN 205391227 U CN205391227 U CN 205391227U CN 201620184685 U CN201620184685 U CN 201620184685U CN 205391227 U CN205391227 U CN 205391227U
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- Prior art keywords
- positioner
- gear
- bone
- bearing
- leading screw
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Abstract
The utility model relates to a marrow endoskeleton tractor, including bone stump positioner, power transmission mechanism, power input device, bone stump positioner has a positioner and the 2nd positioner, a positioner for adjusting apart from the accessible lead screw between the 2nd positioner, power transmission mechanism includes driving gear, driven gear, supplementary gear, driven gear is fixed, and the suit is in on the lead screw, supplementary gear can rotate the ground suit relatively and be in on the lead screw, the driving gear with driven gear supplementary gear intermeshing, power input device is including being used for the drive initiative gear revolve's actuating lever, the outside cover of actuating lever is equipped with a location section of thick bamboo, the actuating lever can for a location section of thick bamboo rotates. The utility model discloses enough make things convenient for people to use, adjustment and response is accurate, is applicable to the thighbone cripetura deformity patient's that the various factors arouses extension treatment.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates to a kind of intramedullary bone bone traction apparatus.
Background technology
According to domestic and international Limb lengthening technical development, prolongation technology generally comprises: exterior fixation bracket extends, exterior fixation bracket extends with intramedullary pin in conjunction with prolongation technology, intramedullary lengtheing nail technology etc., although these technology all serve the effect of Limb lengthening, but there is problems in that
1, adopt exterior fixation bracket to extend, usually due to osteotomy broken ends of fractured bone malalignment in interior outside cortical bone unbalance stress or operation, frequently result in the lower limb line of force and change, femur Varus deformity, and easily caused by postoperative complication, such as osteoarthritis.Meanwhile, if using for a long time exterior fixation bracket to fix, easily causing pin track infection and affect minimal invasive treatment and wear the clothes, great misery can be brought to patient's body and mind；
2, adopt the prolongation method that is combined with intramedullary needle of exterior fixation bracket, osteogenesis can be made along y direction extension, it is to avoid the problem of outrigger line of force change.Especially the intramedullary pin with auto-lock function can after prolongation terminates automatic locked lengths, outrigger can be removed, it is to avoid secondary locking operation, greatly reduce outrigger standing time and pin track infection risk.Even so, extender need nonetheless remain for by outrigger traction auxiliary, and device itself can not bounce back adjustments, can only extend in one direction, it is clear that when sclerotin cross lead need readjustment time, this apparatus function cannot meet the needs of clinical treatment, functionally excessively single.
3, the method adopting intramedullary lengtheing nail, solve the problems referred to above, this device is without outrigger auxiliary traction, current intramedullary lengtheing nail is the most advanced is more successfully external utilizing electromagnetic power or place motor power transmission with clinical practice, can be described as a kind of beautiful design, but because its dynamical system is unstable, the situation of mechanical breakdown happens occasionally clinically, if once break down, Limb lengthening operation will be counted out, it is necessary to second operation extends again, and it is expensive, inconvenience is universal, brings bigger burden also can to patient body and economy.
Utility model content
This utility model is in order to overcome above-mentioned the deficiencies in the prior art, and then provides a kind of intramedullary bone bone traction apparatus, it is possible to being convenient for people to use, governing response is accurate, it is adaptable to the extended treatment of the femoral shortening deformation patients that various factors causes.
The technical solution of the utility model:
A kind of intramedullary bone bone traction apparatus, including bone stump positioner, Poewr transmission mechanism, power input device；
Described bone stump positioner has the first positioner and the second positioner, and described first positioner can be regulated by leading screw relative to the distance between described second positioner；
Described Poewr transmission mechanism includes driving gear, driven gear, equipment gear, described driven gear is fixedly set on described leading screw, described equipment gear is sleeved on described leading screw rotatably, and described driving gear and described driven gear, described equipment gear engage each other；
Described power input device includes the drive rod for driving described driving gear to rotate, and the outer sheath of described drive rod is equipped with positioning tube, and described drive rod can rotate relative to described positioning tube.
Further, described first positioner extends to form square anti-transfer part to side, and described second positioner is formed with the slot matched with described anti-transfer part, can slide relative to described slot in described anti-transfer part.
Further, described leading screw is arranged in described slot, and the end of described slot extends to form the accommodation chamber for installing clutch shaft bearing and the second bearing, described clutch shaft bearing, described second bearing the fixing assembly in outer ring in described accommodation intracavity；One end of described leading screw is connected with described second positioner by described clutch shaft bearing, described second bearing, and the other end of described leading screw is connected with described first positioner.
Further, the centre position of described leading screw is also set with positioning support fagging, and described positioning support fagging is connected by bolt and described second positioner are fixing, is connected by the 3rd bearing between described leading screw with described positioning support fagging.
Further, described clutch shaft bearing, described second bearing all vulcanize and are arranged on described accommodation intracavity, and described 3rd bearing sulfuration is arranged in described positioning support fagging.
Further, the side of described equipment gear abuts with described second bearing, and described equipment gear is formed axial location by described second bearing.
Further, one end of described positioning tube is provided with tapping screw thread, and the other end of described positioning tube is provided with positive stop lug boss, and the end of described drive rod is connected by connecting rod and ratchet are fixing, the outer wall of described positioning tube is formed and the ratchet of described click-fit.
Further, the sidewall of described driving gear caves inward and is formed with interior hexagonal groove, and described drive rod stretches out and is formed with the hexagonal boss coordinated with described interior hexagonal groove.
This utility model has the advantages that intramedullary bone bone traction apparatus disclosed in this utility model relative to prior art, including bone stump positioner, Poewr transmission mechanism, power input device, the drive rod of this utility model manually rotary power input equipment, and then drive the driving gear of Poewr transmission mechanism to rotate, driving gear engages with driven gear, power is transferred to driven gear from driving gear, driven gear is fixed on leading screw, power is transferred to leading screw by driven gear, the rotation of leading screw can drive the first positioner being spirally connected with leading screw to do motion of stretching or contract, thus have adjusted first positioner distance relative to the second positioner；The half of bone stump is connected by steel nail is fixing with the first positioner, second half of bone stump is connected by steel nail is fixing with the second positioner, bone stump positioner, Poewr transmission mechanism needs in the marrow of implantation bone stump, power input device can separate with bone stump positioner and Poewr transmission mechanism, this by external force transmission thus driving screw turns, reach the intramedullary bone bone traction apparatus of Limb lengthening effect, solve the tradition outrigger line of force and change problem, when Limb lengthening terminates, power input device can be dismantled, substantially reduce the standing time of power input device, reduce the risk of pin track infection, and conveniently nail road is nursed and functional exercise after operation in patients, do not affect patient to wear the clothes orthobiosis；The dynamic external force transmission of this utility model armrest, dynamical stability, dyskinesis can be avoided the occurrence of；Cheap for manufacturing cost, simple to operate, easily promote the use of.
Additional aspect of the present utility model and advantage will part provide in the following description, and part will become apparent from the description below, or is recognized by the practice of utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model embodiment；
Fig. 2 is the structural representation within this utility model embodiment；
Fig. 3 is the structural representation within this utility model embodiment；
Fig. 4 is this utility model embodiment Poewr transmission mechanism schematic diagram；
Fig. 5 is this utility model embodiment power input device schematic diagram；
1-bone stump positioner in figure；2-Poewr transmission mechanism；3-power input device；
11-the first positioner；12-the second positioner；13-leading screw；14-clutch shaft bearing；15-the second bearing；16-holds chamber；17-positioning support fagging；18-bolt；19-the 3rd bearing；
21-driving gear；22-driven gear；23-equipment gear；
31-drive rod；32-positioning tube；33-connecting rod；34-ratchet；35-ratchet；
The anti-transfer part of 110-；120-slot；Hexagonal groove in 210-；310-hexagonal boss；320-tapping screw thread；321-positive stop lug boss.
Detailed description of the invention
Below with reference to accompanying drawing, this utility model is described in detail.
In conjunction with shown in Fig. 1 to Fig. 5, intramedullary bone bone traction apparatus disclosed in the present embodiment, including bone stump positioner 1, Poewr transmission mechanism 2, power input device 3；
nullBone stump positioner 1 has the first positioner 11 and the second positioner 12，First positioner 11 can pass through leading screw 13 relative to the distance between the second positioner 12 and regulate，More specifically，One end of first positioner 11 is provided for the installing hole of steel nail traverse，The other end of the first positioner 11 extends to form square anti-transfer part 110，One end of second positioner 12 is also equipped with the installing hole for steel nail traverse equally，Second positioner 12 is formed with the slot 120 matched with anti-transfer part 110，Square anti-transfer part 110 can be inserted in slot 120，And can slide along slot 120，But square anti-transfer part 110 can stop the rotary motion between anti-transfer part 110 and slot 120，Namely the first positioner 11 can only do telescopic slide relative to the second positioner 12；The purpose so arranged is in that, the half implementing the bone stump of bone lengthening can pass through steel nail and the first fixing connection of positioner 11, second half of bone stump can by steel nail and the second fixing connection of positioner 12, due between the first positioner 11 and the second positioner 12 in relative rotation degree of freedom limited, therefore, so can ensure that the stable conjugated growth of bone stump, bone stump malalignment can be avoided, the lower limb line of force changes, the appearance of the sequela such as femur Varus deformity.
Being connected by leading screw 13 between first positioner 11 and the second positioner 12, the screwed one end of leading screw 13 and the first positioner 11 are spirally connected, it is preferable that be provided with the female thread matched with leading screw 13 in the anti-transfer part 110 of the first positioner 11；Leading screw 13 is connected with the second positioner 12 formation by clutch shaft bearing the 14, second bearing 15 with one end of optical axis；The accommodation chamber 16 for disposing clutch shaft bearing 14 and the second bearing 15 it is formed with in the second positioner 12, hold chamber 16 and be arranged at the one end of slot 120, it is installed with clutch shaft bearing 14 and the second bearing 15 holding to vulcanize successively in chamber 16, i.e. clutch shaft bearing 14, the fixing assembly in the outer ring of the second bearing 15 is in holding in chamber 16, so by the supporting role of clutch shaft bearing 14 and the second bearing 15, can ensure that the leading screw 13 rotation relative to the second positioner 12, and then make leading screw 13 can pass through to rotate the telescopic slide driving the first positioner 11, finally realize the adjustment of bone stump distance.
Wherein, leading screw 13 is mainly played a supporting role by the effect of clutch shaft bearing 14, leading screw 13 is played certain supporting role by the second bearing 15 1 aspect, on the other hand the equipment gear 23 abutted with it is played the effect of axially location, more specifically, Poewr transmission mechanism disclosed in the present embodiment includes driving gear 21, driven gear 22, equipment gear 23, driven gear 22 and equipment gear 23 are all sleeved on leading screw 13, driven gear 22 adopts fixing connection with leading screw 13, equipment gear 23 is sleeved on leading screw 13 rotatably, driving gear 21 and driven gear 22, equipment gear 23 engages each other；As preferably, driving gear 21, driven gear 22, equipment gear 23 all adopt conical bevel gear, so so that the space between driving gear 21, driven gear 22, equipment gear 23 is arranged, can save space；The Main Function of driven gear 22 is that the moment that driving gear 21 exports is transferred to leading screw 13, and equipment gear 23 is owing to empty set is on leading screw 13, and its Main Function is to play driving gear 21 to support and spacing effect.
For being further ensured that the stability in leading screw 13 rotation process, middle position at leading screw 13 is provided with positioning support fagging 17, positioning support fagging 17 is connected by bolt 18 is fixing with the second positioner 12, need the 3rd bearing 19 is installed in the centre position of positioning support fagging 17, 3rd bearing 19 needs also exist for being sleeved on leading screw 13, so, leading screw 13 can be played supporting role further by positioning support fagging 17, ensure the stability of leading screw 13 rotation process, can avoid leading screw 13 that circular runout occurs, thus the stability that the first positioner 11 slides relative to the second positioner 12 can be ensured, the phenomenon that can avoid bone stump malalignment occurs；Meanwhile, driven gear 22 is also played certain axial positioning action by positioning support fagging 17.
nullPower input device 3 and bone stump positioner 1、Poewr transmission mechanism 2 in combinations with or be disposed separately，Power input device 3 includes the drive rod 31 for driving driving gear 21 to rotate，At the outer sheath of drive rod 31 equipped with positioning tube 32，Drive rod 31 can rotate relative to positioning tube 32，One end on the outer wall of positioning tube 32 is provided with tapping screw thread 320，Arrange tapping screw thread 320 in order that make positioning tube 32 to screw in skeleton smoothly，Positioning tube 32 is made to be fixed，The other end on the outer wall of positioning tube 32 is provided with positive stop lug boss 321，The outer wall Shanghai of the positioning tube 32 near positive stop lug boss 321 is provided with ratchet 35，The end of drive rod 31 is connected to ratchet 34 by connecting rod 33 extension，Ratchet 34 can coordinate with ratchet 35，So，By coordinating between ratchet 35 with ratchet 34, the position of rotation between drive rod 31 and positioning tube 32 is fixed，User，Can voluntarily as required，Rotate drive rod 31 at any time，Its position of rotation can carry out locking by ratchet 35 with coordinating of ratchet 34，Facilitate the operation of user；Preferably, ratchet 34 is also equipped with back-moving spring, when user needs reversion drive rod 31, ratchet 34 compression reseting spring can be stirred by external force, so that can rotate backward between ratchet 34 and ratchet 35, the purpose so arranged is in that, when drive rod 31 rotates forward, bone stump can be made to form the effect extended, when drive rod 31 rotates backward, the distance between bone stump can be shortened, so, according to actual clinical treatment needs, can regulate voluntarily, therapeutic quality and the effect of clinic can be improved；Arrange the effect of positive stop lug boss 321 to be in that to carry out spacing relative to moving axially of positioning tube 32 to drive rod 31, can prevent drive rod 31 from departing from positioning tube 32.
Sidewall at driving gear 21 caves inward and is formed with interior hexagonal groove 210, drive rod 31 stretches out and is formed with the hexagonal boss 310 coordinated with interior hexagonal groove 210, coordinated by the grafting between hexagonal boss 310 with interior hexagonal groove 210, drive rod 31 can be made to drive driving gear 21 to rotate, simultaneously, can combine rapidly or separate between drive rod 31 and driving gear 21 that grafting coordinates, simple operation.
Above example is the exemplary illustration to this patent, does not limit its protection domain, and its local can also be changed by those skilled in the art, as long as no the spirit beyond this patent, all in the protection domain of this patent.
Claims (8)
1. an intramedullary bone bone traction apparatus, it is characterised in that include bone stump positioner (1), Poewr transmission mechanism (2), power input device (3)；
Described bone stump positioner (1) has the first positioner (11) and the second positioner (12), and described first positioner (11) can be passed through leading screw (13) relative to the distance between described second positioner (12) and be regulated；
Described Poewr transmission mechanism (2) includes driving gear (21), driven gear (22), equipment gear (23), described driven gear (22) is fixedly set on described leading screw (13), described equipment gear (23) is sleeved on described leading screw (13) rotatably, and described driving gear (21) and described driven gear (22), described equipment gear (23) engage each other；
Described power input device (3) includes the drive rod (31) for driving described driving gear (21) to rotate, and the outer sheath of described drive rod (31) is equipped with positioning tube (32), and described drive rod (31) can rotate relative to described positioning tube (32).
2. a kind of intramedullary bone bone traction apparatus according to claim 1, it is characterized in that, described first positioner (11) extends to form square anti-transfer part (110) to side, described second positioner (12) is formed with the slot (120) matched with described anti-transfer part (110), and described anti-transfer part (110) can be slided relative to described slot (120).
3. a kind of intramedullary bone bone traction apparatus according to claim 2, it is characterized in that, described leading screw (13) is arranged in described slot (120), the end of described slot (120) extends to form the accommodation chamber (16) for installing clutch shaft bearing (14) and the second bearing (15), described clutch shaft bearing (14), described second bearing (15) the fixing assembly in outer ring in described accommodation chamber (16)；One end of described leading screw (13) is connected with described second positioner (12) by described clutch shaft bearing (14), described second bearing (15), and the other end of described leading screw (13) is connected with described first positioner (11).
4. a kind of intramedullary bone bone traction apparatus according to claim 3, it is characterized in that, the centre position of described leading screw (13) is also set with positioning support fagging (17), described positioning support fagging (17) is connected by bolt (18) and described second positioner (12) are fixing, is connected by the 3rd bearing (19) between described leading screw (13) with described positioning support fagging (17).
5. a kind of intramedullary bone bone traction apparatus according to claim 4, it is characterized in that, described clutch shaft bearing (14), described second bearing (15) all vulcanize and are arranged in described accommodation chamber (16), and described 3rd bearing (19) sulfuration is arranged in described positioning support fagging (17).
6. a kind of intramedullary bone bone traction apparatus according to claim 5, it is characterised in that the side of described equipment gear (23) abuts with described second bearing (15), described equipment gear (23) is formed axially location by described second bearing (15).
7. a kind of intramedullary bone bone traction apparatus according to claim 6, it is characterized in that, one end of described positioning tube (32) is provided with tapping screw thread (320), the other end of described positioning tube (32) is provided with positive stop lug boss (321), the end of described drive rod (31) is connected by connecting rod (33) and ratchet (34) are fixing, and the outer wall of described positioning tube (32) is formed the ratchet (35) coordinated with described ratchet (34).
8. a kind of intramedullary bone bone traction apparatus according to claim 7, it is characterized in that, the sidewall of described driving gear (21) caves inward and is formed with interior hexagonal groove (210), and described drive rod (31) stretches out and is formed with the hexagonal boss (310) coordinated with described interior hexagonal groove (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184685.4U CN205391227U (en) | 2016-03-11 | 2016-03-11 | Marrow endoskeleton tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620184685.4U CN205391227U (en) | 2016-03-11 | 2016-03-11 | Marrow endoskeleton tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205391227U true CN205391227U (en) | 2016-07-27 |
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ID=56440095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620184685.4U Expired - Fee Related CN205391227U (en) | 2016-03-11 | 2016-03-11 | Marrow endoskeleton tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205391227U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105816226A (en) * | 2016-03-11 | 2016-08-03 | 张�杰 | Intramedullary skeleton tractor |
| CN109276298A (en) * | 2018-08-09 | 2019-01-29 | 盐城日升月恒智能科技有限公司 | A kind of novel marrow combination of inner and outside rope sheave Limb lengthening device |
| CN115998508A (en) * | 2023-03-24 | 2023-04-25 | 北京理贝尔生物工程研究所有限公司 | Orthopedics traction frame |
-
2016
- 2016-03-11 CN CN201620184685.4U patent/CN205391227U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105816226A (en) * | 2016-03-11 | 2016-08-03 | 张�杰 | Intramedullary skeleton tractor |
| CN109276298A (en) * | 2018-08-09 | 2019-01-29 | 盐城日升月恒智能科技有限公司 | A kind of novel marrow combination of inner and outside rope sheave Limb lengthening device |
| CN109276298B (en) * | 2018-08-09 | 2020-12-18 | 盐城日升月恒智能科技有限公司 | Intramedullary and extramedullary combined rope sheave bone lengthening device |
| CN115998508A (en) * | 2023-03-24 | 2023-04-25 | 北京理贝尔生物工程研究所有限公司 | Orthopedics traction frame |
| CN115998508B (en) * | 2023-03-24 | 2023-06-30 | 北京理贝尔生物工程研究所有限公司 | Orthopedics traction frame |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160727 Termination date: 20170311 |
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| CF01 | Termination of patent right due to non-payment of annual fee |