CN208625853U - Vertebra supports range unit - Google Patents
Vertebra supports range unit Download PDFInfo
- Publication number
- CN208625853U CN208625853U CN201720943114.9U CN201720943114U CN208625853U CN 208625853 U CN208625853 U CN 208625853U CN 201720943114 U CN201720943114 U CN 201720943114U CN 208625853 U CN208625853 U CN 208625853U
- Authority
- CN
- China
- Prior art keywords
- feeler lever
- resistive conductor
- rod
- terminal plate
- range unit
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model provides a kind of vertebra support range unit, which is characterized in that includes feeler lever, resistive conductor；The feeler lever includes the body of rod and probe；The body of rod is made of insulating material；Resistive conductor is separated with probe by the body of rod；The feeler lever includes the first feeler lever and the second feeler lever；The resistive conductor is threaded through between the first feeler lever and the second feeler lever.The utility model measures the distance vertebra support using the principle of slide rheostat, while using electronic display, can directly read range data, simple and convenient.
Description
Technical field
The utility model relates to medical instruments fields, and in particular, to a kind of vertebra support range unit.
Background technique
Spondylolishesis, spine fracture, backbone retrogression pathological changes, deformity of spine correction etc. generally use vertebra in surgical procedures
Pedicle screw is connected in vertebra, then completes the support of vertebra in such a way that spinal rod connects pedicle screw, when operation,
First the distance between pedicle screw must be measured, to determine the length for needing the spinal rod intercepted.
The patent document of Publication No. CN 1550220A provides a kind of distance measuring unit for pedicle screw, it
With two arms intersected at rotary shaft, the end of arm can be positioned on two and be screwed at the pedicle screw of adjacent vertebral bone,
The opposite side of first arm at its end is merged into the cross bar equipped with arch scale part, and the second arm has protruding portion, it reaches use
Above the cross bar of adjustment, and form pointer, shown on the scale of scale part with the pointer two pedicle screws it
Between spacing, which is characterized in that the second arm is divided into the flexural spring of pointer and extension in parallel, is fixed on apparent finger
Shape handle；And the handle that cross bar is constituted, to generate stretching force in end by flexural spring, which can be by being connected to finger lever
On scale relative to pointer read.But in actual use, especially in non-adjacent two pieces intervertebral support operations
In, the extending direction of pedicle screw, protrusion height is surveyed with the distance measuring unit of above-mentioned pedicle screw there may be inconsistent
Distance out has differences with actual value, and traditional graduated scale reading mode also inadequate intuitive and convenient.
Utility model content
For the defects in the prior art, the purpose of the utility model is to provide a kind of vertebras to support range unit.
Range unit is supported according to vertebra provided by the utility model, includes feeler lever, resistive conductor；
The feeler lever includes the body of rod and probe；The body of rod is made of insulating material；Resistive conductor is separated with probe by the body of rod；
The feeler lever includes the first feeler lever and the second feeler lever；
The resistive conductor is threaded through between the first feeler lever and the second feeler lever.
Preferably, the body of rod of first feeler lever is internally provided with Thread holder, sliding terminal plate and link plate；
The body of rod of second feeler lever is internally provided with idler wheel；
Resistive conductor successively passes through Thread holder, sliding terminal plate, idler wheel, link plate.
Preferably, the body of rod of first feeler lever is internally provided with Thread holder, sliding terminal plate；
The body of rod of second feeler lever is internally provided with link plate；
Resistive conductor successively passes through Thread holder, sliding terminal plate, link plate.
Preferably, the Thread holder includes clockwork spring；
Resistive conductor is wrapped on clockwork spring.
It preferably, also include electronical display component, electronical display component is mounted on the first feeler lever；The electronical display group
Part includes display screen, power supply, switch and conducting wire；
The display screen, power supply, switch, conducting wire, resistive conductor, sliding terminal plate and link plate composition are closed back
Road.
Preferably, the sliding terminal plate includes ball；
Sliding terminal plate is connect by ball with resistive conductor.
It preferably, also include elastic insulated pipe；
The elastic insulated pipe both ends are connected between the first feeler lever and the second feeler lever；
Part of the resistive conductor at least outside the first feeler lever and the second feeler lever is located in the elastic insulated pipe.
Compared with prior art, the utility model have it is following the utility model has the advantages that
1, the utility model measures the distance vertebra support using the principle of slide rheostat, while using electricity
Sub- display screen can directly read range data, simple and convenient；
2, resistive conductor is accommodated in the Thread holder in feeler lever by clockwork spring in the utility model, and when use facilitates pumping
Out, it is automatically retracted after use；
3, on the one hand the utility model avoids human body to tie as conductor to measurement using elastic insulated pipe sleeve on resistive conductor
Fruit impacts, and on the other hand prevents from polluting resistive conductor and other component.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other spies of the utility model
Sign, objects and advantages will become more apparent upon:
Fig. 1 is a kind of structural schematic diagram of the utility model；
Fig. 2 is the utility model another kind structural schematic diagram；
Fig. 3 is the sliding terminal plate structural schematic diagram with ball；
Fig. 4 is elastic insulated pipe rigging position schematic diagram.
It is shown in figure:
101 ball 2021 of the body of rod
It pops one's head in 102 link plates 203
First feeler lever, 11 display screen 211
Second feeler lever, 12 power supply 212
Switch 213
200 conducting wire 214 of resistive conductor
201 idler wheel 22 of Thread holder
Clockwork spring 2011
Slide the elastic insulated pipe 3 of terminal plate 202
Specific embodiment
The utility model is described in detail combined with specific embodiments below.Following embodiment will be helpful to this field
Technical staff further understands the utility model, but does not limit the utility model in any form.It should be pointed out that ability
For the those of ordinary skill in domain, without departing from the concept of the premise utility, various modifications and improvements can be made.
These are all within the protection scope of the present invention.
In embodiment, vertebra support range unit provided by the utility model is mainly made of feeler lever and resistive conductor 200, is visited
Bar includes the body of rod 101 and probe 102, and wherein the body of rod 101 makes to be made from an insulative material, and probe 102 then needs to be inserted into such as vertebra
In the vertebra support device of pedicle screw one kind, and to avoid because of probe 102 materials deformation bring measurement error,
The metal material with higher hardness and rigidity is selected, such as titanium alloy etc., certainly, probe 102 are also possible to by being unlikely to deform
Nonmetallic materials support, such as rigid plastics.Feeler lever includes the first feeler lever 11 and the second feeler lever 12, and two feeler levers are inserted into respectively
Into two vertebra support devices for needing ranging, it is independent structure due to being two feeler levers, target position can be inserted into respectively
Carry out the adjustment of angle orientation again afterwards, until accurate measurement result is obtained, in contrast, in the prior art, two similar spies
Between the locating rod of bar or hingedly occur that circumferentially opposed rotation carrys out ranging or two positioning arm covers carry out on scale bar
The adjusting of scale bar axial direction carrys out ranging, and flexible operation degree and point distance measurement establish a capital existing defects really.
As shown in Figure 1, the body of rod 101 of the first feeler lever 11 is internally provided with Thread holder 201, sliding terminal plate in embodiment
202 and link plate 203；The body of rod 101 of second feeler lever 12 is internally provided with idler wheel 22；Resistive conductor 200 successively passes through
Cross Thread holder 201, sliding terminal plate 202, idler wheel 22, link plate 203.Clockwork spring 2011 is provided in Thread holder 201,
The both ends of whole resistive conductor 200 are connected between clockwork spring 2011 and link plate 203.As shown in figure 3, sliding connects
Ball 2021 is additionally provided in line plate 202, resistive conductor 200 can be always maintained at ball 2021 and contact.As shown in figure 4, first
It is provided with elastic insulated pipe 3 between feeler lever 11 and the second feeler lever 12, elastic insulated pipe 3 is by should the exposed electricity except feeler lever
Resistance line 200 wraps up.Electronical display component is also provided on first feeler lever 11, electronical display component includes display screen 211, electricity
Source 212, switch 213 and conducting wire 214；The display screen 211, power supply 212, switch 213, conducting wire 214, resistive conductor 200, sliding
Terminal plate 202 and link plate 203 constitute closed circuit.
In vertebra support range unit provided by the utility model, resistive conductor 200 is threaded through between two feeler levers, is used
When, two feeler levers separate, and resistive conductor 200 also can be accordingly drawn out from Thread holder 201, and in the process, resistive conductor 200 can be with
The components such as sliding terminal plate 202 produce relative sliding, therefore ball 2021 is provided on sliding terminal plate 202, reduce resistance
Friction between line 200 and sliding terminal plate 202 can also be on the body of rod 101 for passing through resistive conductor 200 in preference
It is also provided with rolling member structure in aperture, further decreases the frictional force in use process.Ball 2021 is electric conductor, resistive conductor
200 are located at one section between sliding terminal plate 202 and link plate 203 length constituted in access closed circuit, in power supply
Under the premise of 212 voltages are constant, the length that resistive conductor 200 accesses in closed circuit is longer, and resistance is bigger, the electricity in closed circuit
It flows smaller, and then according to the proportional relationship of resistive conductor 200 resistance and length, the length of resistive conductor is obtained, then according to resistance
Line length obtains the distance between two feeler levers, that is, vertebra support device, finally shows the numerical value of distance in display screen
On 211.It is further improved on the basis of the utility model, just can be realized this function: electronical display component also includes to survey
Away from module；The range finder module includes: current measurement module: measuring the electric current in the closed circuit；Resistance calculations module: root
Resistance in closed circuit is calculated according to electric current in closed circuit；Resistive conductor length computation module: resistive conductor is calculated according to the value of resistance
The length of 200 access closed circuits；Length integrates module: the length and resistive conductor of closed circuit are accessed according to resistive conductor 200
200 extension path, integration obtain the distance between the first feeler lever 11 and the second feeler lever 12；Display module: integration is obtained
The distance between first feeler lever 11 and the second feeler lever 12 are shown on display screen 211.
After measurement, resistive conductor 200 is automatically withdrawn into Thread holder 201 under the action of clockwork spring 2011, convenient
It is received and kept.In addition, elastic insulated pipe 3 is arranged, human body is on the one hand avoided to impact as conductor to measurement result, another party
Face prevents from polluting resistive conductor 200 and other component；There are two sections of resistive conductors 200 between two feeler levers, and two sections of bullets are arranged
Property insulation tube 3 is respectively fitted on two sections of resistive conductors 200, is prevented two sections of resistive conductors 200 to be directly in contact, is influenced measurement result；
Elastic insulated pipe 3, which can be, to be made of rubber.In certain preference, an elastic insulated pipe 3 also can be used by two sections of resistance
Line 200 covers inside simultaneously, and two sections of resistive conductors 200 are separated from each other automatically in the case where clockwork spring 2011 pulls and separates with idler wheel 22.
In vertebra support distances measurement process, by estimating the depth of parallelism that may determine that between two feeler levers, Jin Er
Read distance values on display screen, however estimate two parallel feeler levers still there may be relative tilts, cause measurement to miss
Therefore difference is further improved on the basis of the utility model, also added two sets of infrared ray transmittings in electronical display component and connect
Receipts system, infrared ray transmitter and receiver system includes RF transmitter and infrared sensor, by two sets of infrared ray transmitter and receivers
RF transmitter in system is arranged on the second feeler lever 12, and infrared sensor is arranged on the first feeler lever 11, two red chromatographys
Outside line emitting-receiving system is located at the proximal end of feeler lever, distal end.When two feeler levers are parallel, two sets of infrared ray transmitter and receiver systems
The infrared sensor of system receives the infrared ray that corresponding RF transmitter issues simultaneously, at this point, by the number on display screen 211
Value locking, convenient for users to reading.In addition, being additionally provided with Resetting Switching, Resetting Switching is used for the numerical value weight on display screen 211
It sets, so that the utility model is able to carry out measurement next time.It is, of course, preferable to be also possible in example except infrared ray transmitter and receiver
Other signal emitting-receiving systems, such as ultrasonic wave emitting-receiving system other than system etc., the two sets of signals transmitting used connect
Receipts system can also be different two kinds of numbers emitting-receiving systems, such as a set of is infrared ray transmitter and receiver system, another set of to be
Ultrasonic wave emitting-receiving system, as long as guaranteeing that the signal projector of same set of signal emitting-receiving system and signal receiver are being visited
Position on bar is corresponding.
When using the utility model, it is also possible to resistive conductor 200 occur on feeler lever there is a situation where winding, user exists
It will lead to measurement result in the case where being unaware that and biggish deviation occur, therefore further change on the basis of the utility model
Into being additionally provided with magnetic field detectors and alarm device in the first feeler lever 11 and the second feeler lever 12.When resistive conductor 200 is on feeler lever
When winding, the magnetic field strength increase along feeler lever axial direction will lead to, when magnetic field detectors are monitored along feeler lever axial direction side
To magnetic field strength be more than the threshold value of setting when, send a signal to alarm device, and then control alarm device signal an alert,
Such as optical signal or voice signal, user's resistive conductor 200 is reminded to be wound on feeler lever.
As shown in Fig. 2, the body of rod 101 of the first feeler lever 11 is internally provided with Thread holder 201, sliding terminal plate in change case
202；The body of rod 101 of second feeler lever 12 is internally provided with link plate 203；Resistive conductor successively passes through Thread holder 201, slides
Dynamic terminal plate 202, link plate 203, the connection type of other assemblies are identical as embodiment.The advantage of structure shown in change case
It is, saves the length of resistive conductor 200, so that measurement result is more acurrate, but the disadvantage is that, conducting wire 214 must be used to connect
Two feeler levers, this section lead 214 is either exposed or to ensconce in elastic insulated pipe 3 outside, and measurement can all be caused to operate
It is inconvenient.
Specific embodiment of the utility model is described above.It is to be appreciated that the utility model not office
It is limited to above-mentioned particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims,
This has no effect on the substantive content of the utility model.In the absence of conflict, the spy in embodiments herein and embodiment
Sign can be arbitrarily combined with each other.
Claims (7)
1. a kind of vertebra supports range unit, which is characterized in that include feeler lever, resistive conductor；
The feeler lever includes the body of rod and probe；The body of rod is made of insulating material；Resistive conductor is separated with probe by the body of rod；
The feeler lever includes the first feeler lever and the second feeler lever；
The resistive conductor is threaded through between the first feeler lever and the second feeler lever.
2. vertebra according to claim 1 supports range unit, which is characterized in that set inside the body of rod of first feeler lever
It is equipped with Thread holder, sliding terminal plate and link plate；
The body of rod of second feeler lever is internally provided with idler wheel；
Resistive conductor successively passes through Thread holder, sliding terminal plate, idler wheel, link plate.
3. vertebra according to claim 1 supports range unit, which is characterized in that set inside the body of rod of first feeler lever
It is equipped with Thread holder, sliding terminal plate；
The body of rod of second feeler lever is internally provided with link plate；
Resistive conductor successively passes through Thread holder, sliding terminal plate, link plate.
4. vertebra according to claim 2 or 3 supports range unit, which is characterized in that the Thread holder includes clockwork spring bullet
Spring；
Resistive conductor is wrapped on clockwork spring.
5. vertebra according to claim 2 or 3 supports range unit, which is characterized in that also include electronical display component, electricity
Sub- display component is mounted on the first feeler lever；The electronical display component includes display screen, power supply, switch and conducting wire；
The display screen, power supply, switch, conducting wire, resistive conductor, sliding terminal plate and link plate constitute closed circuit.
6. vertebra according to claim 2 or 3 supports range unit, which is characterized in that the sliding terminal plate includes rolling
Pearl；
Sliding terminal plate is connect by ball with resistive conductor.
7. vertebra according to claim 1 supports range unit, which is characterized in that also include elastic insulated pipe；
The elastic insulated pipe both ends are connected between the first feeler lever and the second feeler lever；
Part of the resistive conductor at least outside the first feeler lever and the second feeler lever is located in the elastic insulated pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720943114.9U CN208625853U (en) | 2017-07-31 | 2017-07-31 | Vertebra supports range unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720943114.9U CN208625853U (en) | 2017-07-31 | 2017-07-31 | Vertebra supports range unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208625853U true CN208625853U (en) | 2019-03-22 |
Family
ID=65729646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720943114.9U Expired - Fee Related CN208625853U (en) | 2017-07-31 | 2017-07-31 | Vertebra supports range unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208625853U (en) |
-
2017
- 2017-07-31 CN CN201720943114.9U patent/CN208625853U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190322 Termination date: 20190731 |