CN106511019A - Power-assisting device for incarcerated intramedullary nail removal operation - Google Patents
Power-assisting device for incarcerated intramedullary nail removal operation Download PDFInfo
- Publication number
- CN106511019A CN106511019A CN201611152965.8A CN201611152965A CN106511019A CN 106511019 A CN106511019 A CN 106511019A CN 201611152965 A CN201611152965 A CN 201611152965A CN 106511019 A CN106511019 A CN 106511019A
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- Prior art keywords
- piston rod
- cylinder
- auxiliary piston
- bed board
- cylinder barrel
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/02—Adjustable operating tables; Controls therefor
- A61G13/06—Adjustable operating tables; Controls therefor raising or lowering of the whole table surface
-
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B17/921—Impactors or extractors, e.g. for removing intramedullary devices for intramedullary devices
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/02—Adjustable operating tables; Controls therefor
- A61G13/08—Adjustable operating tables; Controls therefor the table being divided into different adjustable sections
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G13/00—Operating tables; Auxiliary appliances therefor
- A61G13/10—Parts, details or accessories
-
- 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
- A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
- A61B17/92—Impactors or extractors, e.g. for removing intramedullary devices
- A61B2017/922—Devices for impaction, impact element
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2203/00—General characteristics of devices
- A61G2203/70—General characteristics of devices with special adaptations, e.g. for safety or comfort
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G2210/00—Devices for specific treatment or diagnosis
- A61G2210/10—Devices for specific treatment or diagnosis for orthopedics
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a power-assisting device for incarcerated intramedullary nail removal operation. The device is characterized by comprising a specially designed operation bed and one stainless steel removal cylinder; the angle of a head cushioning plate of the operation bed can be adjusted, and upper limb and lower limb cushioning plates can be adjusted, ascended and descended in a segmented mode and are fixed through rapid-adjustment supporting rods; the removal cylinder is composed of an internal cylinder barrel, an external cylinder barrel, a main piston rod and an auxiliary piston rod, the internal cylinder barrel and the external cylinder barrel are connected through a thread and form a stepped face at the front end of the internal cylinder barrel, a pre-compression spring is installed between the stepped face and the left end face of the auxiliary piston rod, and the auxiliary piston rod is pressed at the front end of the external cylinder barrel; the front end of the auxiliary piston rod is an inner conical surface; when the main piston rod moves leftwards, a clamping head at the right end of the main piston rod clamps the head of an intramedullary nail to move leftwards to remove the incarcerated intramedullary nail depending on an external conical surface and the inner conical surface of the auxiliary piston rod. The device greatly reduces possible hurt caused by common impact removal operation, and the possibility of breakage of the intramedullary nail during removal is lowered to the minimum.
Description
Technical field
The present invention relates to make in sporadic incarceration intramedullary pin removal surgery in a kind of surgery Fractures with Intramedullary Nail fixation
Power assisting device.
Background technology
Intramedullary pin be orthopaedics therapy, repair femur, tibia, fibula shaft fracture operation in commonly use internal fixation device it
One, it reduces the stress that fracture site skeleton directly bears by undertaking the stress of a part of patient legs, so as to contributing to plus
The healing rate of fast fracture site, while and patient can be helped to realize early functional exercise and weight training as early as possible, contribute to suffering from
Person recovers leg physiological function as early as possible.
The time for taking out the intramedullary pin of implantation people's soma medullary cavity will typically fracture 1 year to 1 year after healing completely
Half.In this period, in early functional exercise, during progressively recovering leg physiological function, intramedullary pin occasional is embedding for patient
Enter pulp cavity internal skeleton wall and cause incarceration and more difficult taking-up.Conventional use of impact at present hammers removing method impulsive force greatly, takes out
Process is difficult to obtain accurate, slow control.Patent of the present invention as solves incarceration intramedullary pin and takes out problem, and it is set using special
Pure water high pressure cylinder counting, carrying clamping and pull out function disposably completes the mistake for clamping intramedullary pin head and pulling out intramedullary pin
Journey, the pure water hydraulicses system of the proportional control of mating band can be slow and precisely controlled during the pulling out of incarceration intramedullary pin
Ground applies to take out power, impacts the injury that may be brought so as to greatly reduce in conventional impact removal surgery, also can take intramedullary pin
Fracture probability during going out is preferably minimized.The working media of the pure water hydraulicses system used in device can adopt distilled water or
Normal saline, rather than general mineral oil, coordinate the facility of all steel material, can be avoided to operating room as much as possible
The pollution of environment.
The content of the invention
The purpose of the present invention is to take out a variety of drawbacks that incarceration intramedullary pin method is present for existing conventional impact or hammering,
And propose a kind of with without impact, the slowly withdrawing device of controllable precise.
The purpose of the present invention is realized by following technique device：A kind of pressure controlled pure water hydraulicses of proportion of utilization
Device, with reference to the operation table of particular design, its feature and key component include：
1. operation table：Fig. 1 and Fig. 2 show the operation table of particular design, it is characterised in that lathe bed and other facility wholes
On the Liftable base 101 of Electronic control, and be pasted with lifting pedestal 101 rubber shock-absorbing base and can with ground it
Between fixed by foundation bolt.
Bed board 102 is housed on lifting pedestal 101, it is characterised in that the bed board is that aluminium alloy is manufactured or integral molded plastic adds local
Metallic strengthening structure, its upper surface are provided with twice elongated slot, and long trench bottom is provided with multiple with two side of bed board according to certain spacing
Screw.The screw of aluminum alloy material bed board is directly opened on base material, and the screwed hole for being molded bed board is that metal is manufactured and had been molded
It is embedded in bed board hole in journey.
Backing plate is laid on bed board 102, it is characterized by top is the leather parcel sponge soft structure that can ensure patient comfort,
Bottom is metal backing, including head backing plate 103, upper body backing plate 104, thigh backing plate 105 and shank backing plate 107.Head backing plate
103 can rise certain angle by mechanical mechanism；Thigh backing plate 105 and shank backing plate 107 and the upper body backing plate being fixed on lathe bed
Chain connection is used between 104 threes；After thigh backing plate 105 and shank backing plate 107 rise, its high and low position can be by bottom gold
The characteristics of removable adjustable support bar 109 installed on category backboard obtains regulation to adapt to different patient sizes.After regulation is finished,
Support bar 109 is connected as a single entity so as to the position of fixed thigh backing plate 105, shank backing plate 107 by quick locking bolt and bed board.
The solid matter screwed hole of 102 side of bed board is used for the platform 106 for installing 304 or 316 rustless steel pure water hydraulicses cylinders and props up
Frame 108.The support is characterized in that the stainless steel of quick-disassembly structure, 304 or 316, can Fast Installation with dismounting and adjustment position with
Adapt to the high and low position of thigh and calf backing plate 105,107.
2. rustless steel takes out cylinder：Fig. 3 show combination type and takes out hydraulic cylinder, it is characterised in that its internal parts is
304 or 316 stainless steels are simultaneously mainly made up of with 207 inside and outside double-deck cylinder barrel 204,205 and major-minor piston 211,212,213,
And its working media is the pollution-free medium such as pure water or normal saline.Pressure-bearing based on outer layer liquid cylinder 205 in double-deck cylinder barrel
Structure, the hydraulic coupling of cylinder interior are mainly undertaken by it；The inner surface of internal layer cylinder barrel 204 be accurate grinding machined surface, the precision
Machined surface is responsible for guiding main piston head 212 so as to swimmingly can slide along inner cylinder tube under the driving of hydraulic coupling；Interior outer cylinder
Between use precision machined thread connection and by 204 left end of internal layer cylinder barrel sealing ring seal.Outside the left end of outer cylinder block 205
Surface is flank, and it is connected with the female thread of cylinder cap 203 makes both be connected as a single entity and by 205 left end sinking step surface of outer cylinder
The sealing ring sealing of middle installation.
Main piston is by main piston rod 211, main piston and its sealing, director element 212 and locking nut and 213 groups of packing ring
Into.The piston rod is characterised by that its rod end is connected to a straight pin 209, has been set with one thereon by two and half clamping body groups
Into clamping head 208.The characteristics of clamping head is that inside is provided with the subdivision blind hole consistent with conventional intramedullary pin nose shape, appearance
Face be an accurate grinding, taper be 7：24 taper seat, the taper seat can be matched somebody with somebody with the internal conical surface of 207 end of auxiliary piston bar
Close.
Auxiliary piston bar 207 is the ladder quill shaft of outer surface accurate grinding processing, it is characterised in that right side diameter compared with
The longer shaft part of little, length is set in the endoporus of 205 right-hand member of outer cylinder, and close by what is installed in 205 right-hand member endoporus of outer cylinder
Seals, guide are supported and are oriented to；Between the shaft shoulder section that is relatively large in diameter of left side and outer layer cylinder barrel inner surface smooth section front end
There is larger gap, for by hydraulic medium；Sealing member and guide are then installed in order to 211 energy of main piston rod in endoporus
It is enough swimmingly to slide in hole and sealed hydraulic medium makes it from seepage.
Inner cylinder tube right-hand member stretches into outer cylinder and has been internally formed a step surface, the step surface and 207 left-hand end of auxiliary piston bar
A stainless steel spring 210 is mounted between face.The spring be characterised by assembling when have existed for it is a certain amount of
Pre compressed magnitude.In the presence of spring pre-compression force, auxiliary piston bar 207 is crushed on 205 right side inner face of outer cylinder.
Description of the drawings
Structural representations of the Fig. 1 and Fig. 2 for operation table, wherein Fig. 1 are operation table structural perspective, and Fig. 2 is that operation table is tied
Structure side view.
Fig. 3 is the structural representation that combination type takes out hydraulic cylinder.
In figure, 101, lifting pedestal；102nd, bed board；103rd, head backing plate；104th, upper body backing plate；105th, thigh backing plate；
106th, take out cylinder；107th, shank backing plate；108th, support；109th, support bar；201st, joint；202nd, seal washer；203rd, cylinder cap；
204th, inner cylinder tube；205th, outer cylinder；206th, joint and sealing ring；207th, auxiliary piston bar；208th, clamping head；209th, straight pin；
210th, spring；211st, main piston rod；212nd, main piston and its sealing, director element；213 locking nuts and packing ring.
Specific embodiment
As shown in Figure 1, Figure 2 and Figure 3, the present invention includes an operation table and a taking-up cylinder.
Operation table main body is the bed board 102 being supported on lifting pedestal 101, installs backing plate 103,104,105,107 thereon
And support 108, support bar 109, head backing plate 103, thigh backing plate 105, shank backing plate 107, support 108 and support bar 109
Position-adjustable, the support 108 adjusted and can install on support bar 109 support platform for install taking-up cylinder 106.
Take out the cylinder barrel that cylinder is combined into one for inner cylinder tube 204 and outer cylinder 205 by main body, main piston rod 211, main piston
And its main piston of sealing director element 212, locking nut and the composition of packing ring 213, auxiliary piston bar 207, cylinder cap 203 and bullet
The elements such as spring, joint, sealing member are constituted.Wherein, the pressure of hydraulic medium can be pacified by cylinder barrel and cylinder cap by the control of valve group
The joint of dress is respectively connected to the left side or right side of main piston rod, so as to promote main piston head 212 along inner cylinder tube shift to right or left,
Drive main plunger club head clamping head 208 move, and clamping head 208 clamping with otherwise by 207 head of auxiliary piston bar
Taper seat is controlled.There is larger gap between auxiliary piston bar and inner wall of cylinder, it is impossible to autonomic movement, also cannot be driven by hydraulic medium
Dynamic motion, under original state, it is pre-compressed spring 210 and is pressed on outer cylinder front end, when main piston rod moves to left motion, and presss from both sides
When the outer conical surface of tight 208 is contacted by the internal conical surface of its own front end, the motion by main piston rod drives which left together
Moving, and initial minimum grip power being provided by the clamping of inside and outside taper seat, the clamping force can pass through the precompressed for adjusting pretensioned spring
Contracting amount is adjusted.
When in use, concrete operation step is as follows for the present invention：
1., according to the stature and operating habit adjustment operation table lifting pedestal 101 for applying patient, bed board 102 is made and backing plate everywhere
Height be adapted to apply the requirement of patient, make its operational comfort reach maximum satisfaction as far as possible；
2., after patient is lied down on operation table, the position of head backing plate 103 is adjusted according to the requirement of patient, further according to trouble
The stature of person and operative site adjust the thigh backing plate 105, high and low position of shank backing plate 107, subsequently use fixing band by patient
Suffering limb is fixed with backing plate；
3., according to the position adjusted in the 2nd step, the installation site of adjusting bracket 108 and high low dimensional make taking-up cylinder 106
It is consistent with the axis direction of intramedullary pin to be removed to take out operation so as to follow-up；
4. the high low dimensional of support bar 109 is adjusted, trip bolt everywhere is tightened into operation when art is applied so as to fixation then
Position and mechanism action direction and attitude；
5. hydraulic medium pipeline is installed, the action of control valve group makes the main piston rod 211 of taking-up cylinder all stretch out, clamps
208 all open；
6. intramedullary pin head is placed in clamping head, operates the commutation action of valve group, main piston rod 211 is slowly moved to left,
After the outer conical surface of to be clamped 208 is fitted with the internal conical surface of 207 head of auxiliary piston bar, pausing operation checks intramedullary pin head
Whether enough portion stretches into the length of 208 endoporus of clamping head, and the position of adjusting bracket and high low dimensional are ensureing clamping head if necessary
208 length for clamping；
7. the action of valve group after all adjustment is finished, is operated, makes the main piston rod 211 of taking-up cylinder turn left slow movement, must
The hydraulic medium pressure of increase system can slowly be adjusted to overcome the frictional force between incarceration intramedullary pin and pulp cavity inside when wanting, directly
Incarceration position is pulled out to intramedullary pin.
Claims (8)
1. the power assisting device used in a kind of intramedullary pin removal surgery for incarceration, it is characterised in that：It includes a particular design
Operation table and one taking-up cylinder；The operation table has an electric up-down base, and bed board is provided with the top of which, lays on bed board
Head, upper body, the lower part of the body, the backing plate at extremity position, extremity backing plate by hinge-coupled, can around hinge axle rotate, so as to position, height
Degree is adjustable, and regulating height, the backing plate of position can be fixed by support bar.Operation table separately is used to adapt to not with adjustable support
With the needs that position is performed the operation, its height, position quickly can adjust as needed；The taking-up cylinder constitutes liquid by inside and outside double-deck cylinder barrel
Casing wall, between the two by thread connection, they collectively constitute pressure restraining element with cylinder cap, have main piston rod and main work in inner cylinder tube
Chock plug, with the clamping head that is split into two halves, outer cylinder front end inner chamber has an auxiliary piston bar for main piston rod front end, auxiliary piston bar with
There is a pretensioned spring auxiliary piston bar to be held out against in outer cylinder right-hand member inner face between inner cylinder tube.
2. operation table as claimed in claim 1, it is characterised in that：Operation table bed board is that integral Al-alloy is manufactured or integral molded plastic
Plus localized metallic reinforcement structure, its upper surface is provided with twice elongated slot, and long trench bottom is opened according to certain spacing with two side of bed board
There are multiple screws.The screw of aluminum alloy material bed board is directly opened on base material, be molded bed board screwed hole be metal manufacture and
It is embedded in bed board hole in injection moulding process.
3. operation table as claimed in claim 1, it is characterised in that：The backing plate at extremity position and the upper body pad being fixed on lathe bed
Plate uses chain connection each other；Extremity backing plate can manual adjustment high and low position and attitude, adjustment finish after can by bottom gold
The removable adjustable support bar installed on category backboard is fixed by screw attachment with the screwed hole in bed board upper surface elongated slot.
4. cylinder is taken out as claimed in claim 1, it is characterised in that：Cylinder barrel is made up of interior outer cylinder, between the two by screw thread
Connection, can adjust relative position of the inner cylinder tube relative to outer cylinder as needed, be sealed by potted component between the two；
5. the taking-up cylinder as described in claim 1,4, it is characterised in that：The taking-up cylinder has main piston rod and two, auxiliary piston bar
Piston rod, wherein main piston rod be driving link, its front end carry straight pin, the straight pin main piston rod be split into two halves, it is interior
The clamping head of portion's perforate combines as a whole, and fit clearance ensure that clamping head free-open-close；Have between auxiliary piston bar and cylinder barrel
Larger gap, hydraulic medium smoothly can flow, thus auxiliary piston bar cannot active exercise.
6. the taking-up cylinder as described in claim 1,4,5, it is characterised in that：The clamping head outer surface of main piston rod head institute band is
The outer conical surface of accurate grinding, the male cone (strobilus masculinus) can be compressed by the internal conical surface of auxiliary piston boom end and be shunk so that inside clamping head
Opening diameter reduce, so as to clamp intramedullary pin head to be removed.
7. the taking-up cylinder as described in claim 1,4, it is characterised in that：Inner cylinder tube front end and auxiliary piston rod rear end step end face it
Between install a rustless steel pretensioned spring, it is responsible for for auxiliary piston bar being pressed on outer cylinder interior forward end face.
8. the taking-up cylinder as described in claim 1,4, it is characterised in that：All material adopts 304 or 316 austenite stainless steels
Make, working media is room temperature clear water or normal saline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611152965.8A CN106511019A (en) | 2016-12-14 | 2016-12-14 | Power-assisting device for incarcerated intramedullary nail removal operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611152965.8A CN106511019A (en) | 2016-12-14 | 2016-12-14 | Power-assisting device for incarcerated intramedullary nail removal operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106511019A true CN106511019A (en) | 2017-03-22 |
Family
ID=58339422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611152965.8A Pending CN106511019A (en) | 2016-12-14 | 2016-12-14 | Power-assisting device for incarcerated intramedullary nail removal operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106511019A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322992A (en) * | 2018-12-14 | 2019-02-12 | 武汉科技大学 | A kind of inflatable linear oil cylinder piston |
| CN110226964A (en) * | 2019-07-09 | 2019-09-13 | 王海涛 | A kind of disassembly skeletal fixation instrument screw extractor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982003983A1 (en) * | 1981-05-18 | 1982-11-25 | Hermann Ruf | Additional surgical table usable for the extension and reposition |
| CN200963182Y (en) * | 2006-10-27 | 2007-10-24 | 翁习生 | Broken nail extraction apparatus |
| CN201537129U (en) * | 2009-08-04 | 2010-08-04 | 国华 | Broken nail extracting device |
| CN201701296U (en) * | 2010-06-22 | 2011-01-12 | 郭玉柱 | Orthopedic nail remover |
| CN105012006A (en) * | 2015-07-19 | 2015-11-04 | 孟媛 | Nail-removing apparatus for orthopedics department |
| CN105686876A (en) * | 2016-03-29 | 2016-06-22 | 李现军 | Screw taking device used in department of orthopaedics |
-
2016
- 2016-12-14 CN CN201611152965.8A patent/CN106511019A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1982003983A1 (en) * | 1981-05-18 | 1982-11-25 | Hermann Ruf | Additional surgical table usable for the extension and reposition |
| CN200963182Y (en) * | 2006-10-27 | 2007-10-24 | 翁习生 | Broken nail extraction apparatus |
| CN201537129U (en) * | 2009-08-04 | 2010-08-04 | 国华 | Broken nail extracting device |
| CN201701296U (en) * | 2010-06-22 | 2011-01-12 | 郭玉柱 | Orthopedic nail remover |
| CN105012006A (en) * | 2015-07-19 | 2015-11-04 | 孟媛 | Nail-removing apparatus for orthopedics department |
| CN105686876A (en) * | 2016-03-29 | 2016-06-22 | 李现军 | Screw taking device used in department of orthopaedics |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322992A (en) * | 2018-12-14 | 2019-02-12 | 武汉科技大学 | A kind of inflatable linear oil cylinder piston |
| CN110226964A (en) * | 2019-07-09 | 2019-09-13 | 王海涛 | A kind of disassembly skeletal fixation instrument screw extractor |
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Application publication date: 20170322 |