阅读说明：本技术 一种ivus回撤系统及方法 (A kind of IVUS withdraws system and method ) 是由 赵传东 于 2019-10-08 设计创作，主要内容包括：本申请公开了一种IVUS回撤系统及方法,其中回撤系统包括回撤底座、可滑动安装在所述回撤底座上的回撤主体以及导管组件,所述导管组件包括与所述回撤底座连接的鞘管和与所述回撤主体连接的驱动轴,还包括：磁性部件；磁敏元件,用于发出信号值以供计算所述磁敏元件的位置信息,所述磁敏元件可在所述磁性部件的两极之间移动；所述磁敏元件或所述磁性部件择一安装在所述回撤主体上,并可跟随所述回撤主体移动,另一者安装在所述回撤底座上。本申请所提供的IVUS回撤系统,利用所述磁敏元件在所述磁性部件两极之间的电流变化,计算所述磁敏元件或所述磁性部件的实际位置,进而计算出实际检测位置,提高检测精度,降低导管更换的概率,降低风险。(This application discloses a kind of IVUS to withdraw system and method, wherein withdrawing system includes withdrawing pedestal, can be slidably mounted at described withdraw and withdraw main body and conduit tube component on pedestal, the conduit tube component include with it is described withdraw sheath that pedestal is connect and with the drive shaft for withdrawing main body and connecting, further includes: magnetic part；Magneto sensor, for issuing signal value for calculating the location information of the magneto sensor, the magneto sensor can move between the two poles of the earth of the magnetic part；The magneto sensor or the magnetic part select one be mounted on it is described withdraw in main body, and the main body that withdraws can be followed mobile, another one is mounted on described withdraw on pedestal.IVUS provided herein withdraws system, utilize curent change of the magneto sensor between described magnetic part the two poles of the earth, calculate the physical location of the magneto sensor or the magnetic part, and then calculate actually detected position, improve detection accuracy, the probability of conduit replacement is reduced, risk is reduced.)

1. a kind of IVUS withdraws system, master is withdrawn on pedestal (3) including withdrawing pedestal (3), can be slidably mounted at described withdraw Body (1) and conduit tube component, the conduit tube component include withdrawing sheath that pedestal (3) is connect with described and withdrawing main body with described (1) drive shaft (2) connected, which is characterized in that further include:

Magnetic part (6)；

Magneto sensor (8) calculates the location information of the magneto sensor (8), the magneto sensor for issuing signal value (8) it can be moved between the two poles of the earth of the magnetic part (6)；

The magneto sensor (8) or the magnetic part (6) select one be mounted on it is described withdraw on main body (1), and can follow described Main body (1) movement is withdrawn, another one is mounted on described withdraw on pedestal (3).

2. IVUS according to claim 1 withdraws system, which is characterized in that further include: for according to the magneto sensor (8) signal value issued calculates the processor of the location information of the magneto sensor (8).

3. IVUS according to claim 1 withdraws system, which is characterized in that further include that can drive described to withdraw main body (1) Withdrawing guide rail (5) for main body (1) sliding is withdrawn described in mobile driving part (4) and confession, the guide rail (5) that withdraws is mounted on institute It states and withdraws on pedestal (3).

4. withdrawing system to IVUS described in 3 any one according to claim 1, which is characterized in that the magneto sensor (8) is Linear hall element.

5. withdrawing system to IVUS described in 3 any one according to claim 1, which is characterized in that the magnetic part (6) is U-shaped or linear type magnet.

6. a kind of IVUS withdraws method, system, feature are withdrawn applied to the IVUS as described in claim 1 to 5 any one It is, comprising the following steps:

During drive shaft (2) are mobile, the ultrasound echo signal of different time points is obtained；

The signal value of the magneto sensor (8) under each time point is obtained, and is calculated under corresponding time point according to the signal value Detect location information；

Ultrasound image is generated according to the time point, the ultrasound echo signal and the detection location information.

7. IVUS according to claim 6 withdraws method, which is characterized in that the magneto sensor obtained under each time point (8) signal value, and calculate according to the signal value detection location information under corresponding time point, comprising:

Obtain the signal value of the magneto sensor (8) under each time point；

The relative position of the magneto sensor (8) Yu magnetic part (6) the two poles of the earth is calculated according to the signal value；

Depending on that relative position, the distance between the two poles of the earth of the magnetic part (6) and the magneto sensor (8) with it is described The mounting height of magnetic part (6) calculates the detection location information of the magneto sensor (8).

8. IVUS according to claim 7 withdraws method, which is characterized in that described according to the time point, the ultrasound Echo-signal and the detection location information generate ultrasound image, comprising:

Determine the image of the corresponding detection location information of each time point and the corresponding display of the ultrasound echo signal Frame arranges each described image frame to generate according to the sequence at the time point, according to each corresponding detection location information Ultrasound image；Wherein, between location information representated by the distance of each described image frame arrangement and each detection location information Distance it is proportional.

9. withdrawing method according to IVUS described in claim 6 to 8 any one, which is characterized in that further comprise the steps of:

Obtain the pulse cycle of person under test；

The ultrasound echo signal or its image for corresponding to display are extracted by time interval of the pulse cycle, and is generated as week Phase image.

10. IVUS according to claim 9 withdraws method, which is characterized in that the pulse week for obtaining the person under test Phase, comprising:

According to the ultrasound echo signal or its image for corresponding to display, the time interval between peak value or valley is analyzed as institute State pulse cycle.

Technical field

This application involves angiocarpy to detect therapy field, withdraws system and method more particularly to a kind of IVUS.

Background technique

Intravascular ultrasound echo-wave imaging system (IVUS) can show the lesion situation of cardiovascular disease, in this technology In, blood vessel is goed deep into using conduit, while the energy converter in conduit carries out circular scanning by rotation, is evenly withdrawn to complete The scanning of one section of blood vessel long axis direction.

Summary of the invention

The purpose of the application is to provide a kind of IVUS and withdraws system and method, for obtaining ultrasound image, improves detection essence Degree reduces the probability of conduit replacement, reduces risk.

To achieve the above object, the application provides the following technical solutions:

A kind of IVUS withdraws system, including withdraw pedestal, can be slidably mounted at it is described withdraw on pedestal withdraw main body with And conduit tube component, the conduit tube component include with it is described withdraw sheath that pedestal is connect and with the driving for withdrawing main body and connecting Axis, further includes:

Magnetic part；

Magneto sensor, for issuing signal value for calculating the location information of the magneto sensor, the magneto sensor can It is moved between the two poles of the earth of the magnetic part；

The magneto sensor or the magnetic part select one be mounted on it is described withdraw in main body, and can follow and described withdraw master Body is mobile, and another one is mounted on described withdraw on pedestal.

Preferably, further includes: the signal value for being issued according to the magneto sensor calculates the position of the magneto sensor The processor of information.

It preferably, further include that described withdraw can be driven to withdraw returning for main body sliding described in the mobile driving part of main body and confession Guide rail is removed, the guide rail that withdraws is mounted on described withdraw on pedestal.

Preferably, the magneto sensor is linear hall element.

Preferably, the magnetic part is U-shaped or linear type magnet.

A kind of IVUS withdraws method, comprising the following steps:

During drive shaft is mobile, the ultrasound echo signal of different time points is obtained；

The signal value of the magneto sensor under each time point is obtained, and is calculated under corresponding time point according to the signal value Detect location information；

Ultrasound image is generated according to the time point, the ultrasound echo signal and the detection location information.

Preferably, the signal value for obtaining the magneto sensor under each time point, and calculated pair according to the signal value Answer the detection location information under time point, comprising:

Obtain the signal value of the magneto sensor under each time point；

The relative position of the magneto sensor Yu magnetic part the two poles of the earth is calculated according to the signal value；

Depending on that relative position, the distance between the two poles of the earth of the magnetic part and the magneto sensor and the magnetic The mounting height of property component, calculates the detection location information of the magneto sensor.

Preferably, described that ultrasound is generated according to the time point, the ultrasound echo signal and the detection location information Image, comprising:

Determine that the corresponding detection location information of each time point and the ultrasound echo signal correspond to display Picture frame, by each described image frame according to the time point sequence, according to each corresponding detection location information arrangement with Generate ultrasound image；Wherein, the distance of each described image frame arrangement and location information representated by each detection location information The distance between it is proportional.

Preferably, it further comprises the steps of:

Obtain the pulse cycle of person under test；

The ultrasound echo signal or its image for corresponding to display are extracted by time interval of the pulse cycle, and is generated For period image.

Preferably, the pulse cycle for obtaining the person under test, comprising:

According to the ultrasound echo signal or its image for corresponding to display, the time interval analyzed between peak value or valley is made For the pulse cycle.

IVUS provided herein withdraws system, including withdrawing pedestal, can be slidably mounted at described withdraw on pedestal Withdraw main body and conduit tube component, the conduit tube component includes withdrawing sheath that pedestal is connect with described and withdrawing main body with described The drive shaft of connection, further includes: magnetic part；Magneto sensor calculates the position of the magneto sensor for issuing signal value Confidence breath, the magneto sensor can move between the two poles of the earth of the magnetic part；The magneto sensor or the magnetic part Select one be mounted on it is described withdraw in main body, and the main body that withdraws can be followed mobile, another one is mounted on described withdraw on pedestal. IVUS provided herein withdraws system, using curent change of the magneto sensor between described magnetic part the two poles of the earth, The physical location of the magneto sensor or the magnetic part is calculated, and then calculates actually detected position, improves detection accuracy, The probability of conduit replacement is reduced, risk is reduced.

IVUS provided herein withdraws method, comprising the following steps: during drive shaft is mobile, obtains different The ultrasound echo signal at time point；The signal value of the magneto sensor under each time point is obtained, and is calculated according to the signal value Detection location information under corresponding time point；According to the time point, the ultrasound echo signal and the detection location information Generate ultrasound image.IVUS provided herein withdraws method, described in the signal value calculating issued by the magneto sensor The physical location of magneto sensor or the magnetic part, and then the detection location information of actually detected position is calculated, utilize institute State time point, the ultrasound echo signal and the detection location information generate ultrasound image, realize it is synchronous, movable, can To match the inspection of actual position information and time point, accuracy is significantly improved.

Detailed description of the invention

In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is that IVUS provided herein withdraws a kind of main view of specific embodiment of system；

Fig. 2 is that IVUS provided herein withdraws a kind of top view of specific embodiment of system；

Fig. 3 is the shift position schematic diagram that IVUS provided herein withdraws Hall element in system；

Fig. 4 is the flow chart that IVUS provided herein withdraws method；

Wherein: withdrawing main body (1), drive shaft (2), withdraw pedestal (3), driving part (4), withdraw guide rail (5), magnetic portion Part (6), host cable (7), magneto sensor (8).

Specific embodiment

The core of the application is to provide a kind of IVUS and withdraws system and method, can provide the time and corresponding with picture close System, image show more accurate, raising detection accuracy and treatment precision, reduction risk.

In order to make those skilled in the art more fully understand application scheme, with reference to the accompanying drawings and detailed description The application is described in further detail.

Please refer to figs. 1 to 4, and Fig. 1 is that IVUS provided herein withdraws a kind of main view of specific embodiment of system Figure；Fig. 2 is that IVUS provided herein withdraws a kind of top view of specific embodiment of system；Fig. 3 is provided herein IVUS withdraw the shift position schematic diagram of Hall element in system；Fig. 4 is the stream that IVUS provided herein withdraws method Cheng Tu.

In this embodiment, it includes withdrawing pedestal 3, withdrawing main body 1, conduit tube component, magnetic part 6 that IVUS, which withdraws system, With magneto sensor 8.

Wherein, it withdraws main body 1 and can be slidably mounted at and withdraw on pedestal 3, conduit tube component includes sheath and drive shaft 2, sheath It is connect with pedestal 3 is withdrawn, drive shaft 2 is connect with main body 1 is withdrawn；Magneto sensor 8 is for issuing signal value, for calculating magnetosensitive member The location information of part 8, magneto sensor 8 can move between the two poles of the earth of magnetic part 6, specifically, magneto sensor 8 is preferably linear Hall element, such as quantum-well materials closed-loop type linear hall element, when Hall element is located at the intermediate point of magnetic part 6, i.e., Electric current when zero point is zero, and electric current is gradually increased during the close pole N or the pole S, and electric current is reversed during close another pole Increase, by detecting the size of current of Hall element, thereby determines that distance of the Hall element to the two poles of the earth of magnetic part 6, then root According to triangle relation shown in Fig. 3, the displacement of Hall element in the horizontal direction is calculated, and then the detection of test point can be calculated Location information.

Preferably, magnetic part 6 is U-shaped or linear type magnet, U-shaped or the distance between the pole linear type magnet N and the pole S It is larger, it can satisfy and withdraw the requirement of the biggish moving distance of main body 1.

Further, magneto sensor 8 or magnetic part 6, which are selected one and be mounted on, withdraws in main body 1, and can follow and withdraw the shifting of main body 1 Dynamic, another one, which is mounted on, to be withdrawn on pedestal 3.It preferably, can be preferably by magneto sensor 8 since the size of magneto sensor 8 is smaller It is mounted on and withdraws main body 1, magnetic part 6 is mounted on and is withdrawn on pedestal 3, also, the moving limit position of magneto sensor 8 should Between the two poles of the earth of magnetic part 6.It is withdrawn in main body 1 it is of course also possible to which magnetic part 6 is mounted on, magneto sensor 8 is pacified It on withdrawing, can be set according to actual needs, be not limited to mode given by the present embodiment.

IVUS provided herein withdraws system, is become using electric current of the magneto sensor 8 between 6 the two poles of the earth of magnetic part Change, calculate the physical location of magneto sensor 8 or magnetic part 6, and then calculate actually detected position, improves detection accuracy, drop The probability of low conduit replacement, reduces risk.

On the basis of the respective embodiments described above, further includes:

Signal value for being issued according to magneto sensor 8 calculates the processor of the location information of magneto sensor 8, and processor can To receive the signal value of the sending of magneto sensor 8, the signal value that magneto sensor 8 issues is specifically as follows current value, and processor is first The location information that the signal value received is converted to magneto sensor 8 is then converted into the detection location information of test point, detection Point is the position where the probe of 2 end of drive shaft.

It specifically, processor can be set in withdrawing system, can also be located in ultrasonic host, surpass when processor is located at When in sound host, the system that withdraws only undertakes the function of returning signal.

It further include that can drive to withdraw the mobile driving part 4 of main body 1 and for withdrawing on the basis of the respective embodiments described above What main body 1 was slided withdraws guide rail 5, withdraws guide rail 5 and is mounted on and withdraws on pedestal 3.Specifically, driving part 4 can be driving electricity Machine is mounted on and withdraws inside main body 1, and it is possible to provide driving energy by host cable 7 for driving motor；Specifically, returning Removing withdrawing for pedestal 3 can be set rack gear on guide rail 5, the rotary shaft of driving motor is circumferentially with external tooth, the rotation of driving motor The tooth engagement on outside and rack gear in shaft, in driving motor rotation, drive withdraws main body 1 along the rack gear for withdrawing guide rail 5 It is mobile.

Certainly, driving motor can also use roller type rotation, roller, friction pulley form, form it on withdrawing guide rail 5 Move forward and backward.

In one embodiment, withdrawing design in main body 1 has driving axial interface, for installing the drive shaft 2 of conduit tube component, Drive shaft 2 rotates during withdrawing the movement of main body 1, withdraws pedestal 3 equipped with sheath interface tube, for installing conduit tube component Sheath, and sheath is set in the outside of drive shaft 2；Specifically, the front end for withdrawing pedestal 3 is equipped with the bending part being folded upward at, sheath The outside of bending part is arranged in interface tube, and drive shaft 2 is mounted on driving axial interface after running through sheath interface tube；Withdraw main body 1 Inside is equipped with closed loop Hall element on fixed position, main body 1 is withdrawn when moving forward and backward, with closed loop linear hall element It moves together；It withdraws main body 1 and is mounted on and withdraw on guide rail 5, can be slid back and forth on withdrawing guide rail 5；It withdraws and is connected in main body 1 The signal of closed loop linear hall element can be transmitted to host arithmetic processor by host cable 7 by host cable 7；It leads It is connected with connector in the drive shaft 2 of tube assembly, and is connected to by connector on the driving axial interface for withdrawing main body 1；Withdraw pedestal 3 As supportive body, in the course of work, the position for withdrawing pedestal 3 immobilizes；Magnetic part 6 is flat U magnet, is mounted on back It removes on pedestal 3, effect is to generate dipolar magnetic field；One end of host cable 7 is connected with host, and another terminate at withdraws main body 1 On, effect is and to transmit various communication signals to withdraw main body 1 and providing energy；Closed loop linear hall element can incude The length at magnetic field the two poles of the earth, and signal is reached by host cable 7 and is handled on host CPU.

In addition to above-mentioned IVUS withdraws system, present invention also provides a kind of IVUS to withdraw method.The IVUS withdraws method packet Include following steps:

During drive shaft 2 is mobile, the ultrasound echo signal of different time points is obtained；Specifically, above-mentioned time point It can be evenly spaced time point, or the other times of setting；

The signal value of the magneto sensor 8 under each time point is obtained, and the inspection under corresponding time point is calculated according to signal value Survey location information；

Ultrasound image is generated according to time point, ultrasound echo signal and detection location information.

IVUS provided herein withdraws method, calculates magneto sensor 8 or magnetic by the signal value that magneto sensor 8 issues The physical location of property component 6, and then the detection location information of test point is calculated, utilize time point, ultrasound echo signal and inspection It surveys location information and generates ultrasound image, realize inspection synchronous, movable, that actual position information and time point can be matched, Accuracy significantly improves.

On the basis of the respective embodiments described above, the signal value of the magneto sensor 8 under each time point is obtained, and according to signal Value calculates the detection location information under corresponding time point, comprising:

The signal value for obtaining the magneto sensor 8 under each time point, is specifically as follows current value；

The relative position of magneto sensor 8 Yu 6 the two poles of the earth of magnetic part is calculated according to signal value；

Depending on the relative position, the installation of the distance between the two poles of the earth of magnetic part 6 and magneto sensor 8 and magnetic part 6 Highly, by trigonometric function relationship, the actual position information of magneto sensor 8 is calculated, and then calculates detection location information.

On the basis of the respective embodiments described above, generated according to time point, ultrasound echo signal and detection location information super Acoustic image, comprising:

Determine the picture frame of corresponding detection location information of each time point and the corresponding display of ultrasound echo signal, Jiang Getu As frame is arranged according to the sequence at time point, according to each corresponding detection location information to generate ultrasound image；Wherein, each picture frame The distance of arrangement is proportional to the distance between location information representated by each detection location information.

Specifically, the sequence at above-mentioned time point is only used for the sequence arrangement of each picture frame, each picture frame is in entire ultrasound figure As upper locating specific location, it should be judged according to location information representated by detection location information, be ultimately formed by several Width picture frame collectively forms, each image frame has the ultrasound image of temporal information.

On the basis of the respective embodiments described above, further comprise the steps of:

Obtain the pulse cycle of person under test；

Ultrasound echo signal or its image for corresponding to display are extracted by time interval of pulse cycle, and is generated as cyclic graph Picture.

In above-mentioned steps, according to the period of heartbeat or pulse, the picture frame of each period same time point is extracted It is recombinated, constitutes a kind of new image in this way, it may be assumed that the blood vessel shape under pulse peak value vascular morphology or pulse free position State, in this way it can be observed that when blood vessel is with pulse contraction, diastole, the different shape of lesion.

Specifically, obtaining the pulse cycle of person under test, comprising:

According to ultrasound echo signal or its image for corresponding to display, the time interval between peak value or valley is analyzed as arteries and veins It fights the period.I.e. pulse cycle can also be obtained by the time interval between analysis peak value or valley, without to person under test into Row is actually detected.

What needs to be explained here is that two dimensional image refers to the flat image not comprising depth information, it is bis- axial coordinate of X, Y Plan view, the only length and width of plane；3-D image, that is, stereo-picture, is also axonometric drawing, perspective view, and figure is tri- axis of X, Y, Z The perspective view of coordinate, there is length；Four-dimensional image, that is, dynamic image such as video；Time point and detection position are utilized in the application The ultrasound image that information reconstruction comes out, can be two-dimensional blood vessel long axis reconstruction image, is also possible to three-dimensional reconstruction image.Its In, when needing to obtain the pulse cycle of person under test, pulse peak value vascular morphology is also possible to two dimension or three-dimensional, for example, logical Cross two-dimensional blood vessel long axis reconstruction image, it can be seen that the diameter of diastole and contraction when vascular pulsation chooses the peak value of its diameter Difference with the time point of valley correspondence image is as pulse cycle, more accurately.

IVUS provided by the present embodiment withdraws system and method, it is preferred to use the position between Hall element and magnetic part Variation is set, to calculate the physical location of test point, specifically, according to Hall effect, when the semiconductor for having Weak current When being placed in magnetic field, the carrier in semiconductor is deflected by the effect of Lorentz force, and semiconductor two sides is made to generate electric heating Difference, wherein hall device potential difference VH and magnetic induction density B and control electric current I form direct ratio, and relationship is VH- (RH/D) * B*IC or IC are constant, wherein RH is Hall coefficient, and D is magnetosensitive body thickness in hall device, and B is magnetic induction intensity, and IC is control Electric current processed.

Under certain condition, magnetic field strength can be corresponded to out by the value of Hall voltage VH, and Closed Loop Hall is Induced magnetic field is compensated by the magnetic field that payment electric current generates, makes the Hall element Zero flux working condition of board detection always, That is N1*IN=N2*IM, size and direction by IM may know that the size and magnetism in magnetic field: when IM is "+" value, Hall The position of element is in half section of the pole N in magnetic field, and the size of value specifies the intensity in magnetic field, according to magnetic field from centre to magnetic pole Increasingly stronger principle can obtain the location of Hall element；When IM is "-", the position of Hall element is in the S in magnetic field Half section of pole, the size of value also indicated where position, and it is above-mentioned same；As IM=0, then Hall element is in two magnetic poles Middle position.

As illustrated in fig. 1 and 2, closed loop linear hall element has been in dipolar magnetic field, and position more forward, i.e., is more leaned on One end of nearly conduit tube component, magnetic pole S are stronger；In the backward, magnetic pole N is stronger.When Hall element is in entire stroke distances When middle, then N, S repeal by implication, induced voltage zero.According to Hall phenomena principles, the letter of this Hall element output is analyzed Number (being set as DA) may know that the line segment proportional positions formed between two magnetic poles where Hall element.

Because structure limit, the installation site of Hall element and the most strong section of the magnetic line of force in magnetic field not on the same line, it It is wired to triangle with two magnetic poles, with reference to attached drawing 3；

As shown in figure 3, X represents Hall element, N, S respectively represent the position of magnetic pole, and line segment NS is magnetic pole line, line segment NX, SX are two sides of Δ NXS respectively, and when X is moved left and right, Δ NXS shape changes, because point X is not on line segment NS, institute It is disproportionate with the detection ratio of X point and NO, OS, the absolute value of line segment NO, OS can be easily solved according to trigonometric function. Specific method can refer to the prior art, and details are not described herein.

System and method is withdrawn provided by the present embodiment, is had the advantages that

1, can at any time, under any state, it is known that withdraw the position of main body 1, visited to know in conduit tube component The position of head in the blood vessels；

2,3-D image can be upgraded, the scene of conduit is constantly presented in face of doctor, this is similar to a Duan Shan The video recording in hole, 3-D image be it is static, for observation；And the image after upgrading, it but can be as movable video lens, vision is from mountain Hole bottom starts, and moves towards cavern mouth always, until complete detect, process be it is synchronous, movable, it can be observed that pulse jump A kind of more true inspection of the variation of blood vessel when dynamic.

It 3, need not again during the inspection process, if situations such as encountering power failure, failure, finishes as long as lesion has been withdrawn Conduit is changed to reexamine because its image is constantly simultaneous display, rather than as in the prior art, complete it is entire Detection process after, by trigger last that travel switch entire 3-D image could be carried out distance, it is radial deeply Degree calculates.

4, because activity is continuous, and pulse is the period, and provided herein withdraws system and method, can calculate It, can mentioning with various dimensions out when pulse peak value the case where blood vessel (after expansion), when pulse valley the case where vascular wall (after diminution) For information to doctor, plays the role of the prior art and be unable to reach completely.

System and method is withdrawn to IVUS provided herein above to be described in detail.It is used herein specifically The principle and implementation of this application are described for a example, the application that the above embodiments are only used to help understand Method and its core concept.It should be pointed out that for those skilled in the art, not departing from the application original Under the premise of reason, can also to the application, some improvement and modification can also be carried out, these improvement and modification also fall into the application right and want In the protection scope asked.