CN109817313A - A kind of medical information safety management system based on block chain technology - Google Patents
A kind of medical information safety management system based on block chain technology Download PDFInfo
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- CN109817313A CN109817313A CN201910014918.4A CN201910014918A CN109817313A CN 109817313 A CN109817313 A CN 109817313A CN 201910014918 A CN201910014918 A CN 201910014918A CN 109817313 A CN109817313 A CN 109817313A
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Abstract
The present invention discloses a kind of medical information safety management system based on block chain technology, it comprises the following modules, patient information system, information include module, information operation module, information assigning module and information common query module, information operation module, for including the medical information of patient and the user name of the patient, and medical information is encrypted, the user name of encrypted medical information and corresponding patient is indexed on block chain corresponding medical information and is included in node；Information assigning module includes the access authority of node for the medical information that the patient distributes in corresponding block chain for the medical information according to patient.Present system, which has, initiates inquiry, obtains sufferer medical treatment record and consults the functions such as desensitization medical data, the circulation for promoting medical big data is shared, is conducive to the interoperability for promoting medical big data multi-party.
Description
Technical field
The present invention relates to block chain technologies, and in particular to a kind of medical information safety management system based on block chain technology
System.
Background technique
Medical treatment is the importance in people's daily life, is related to people's health problem.Present patient sees a doctor logical
It is often the state of an illness that oneself is described by patient, the state of an illness, the experience of oneself and audit report that doctor describes according to patient is in conjunction with sentencing
The state of an illness of disconnected patient, this mode rely heavily on the experience of doctor.But often some diseases connect each other, it may
The symptom of patient herein is the symptom on surface, and doctor is difficult that the medical informations such as the pervious medical history of patient is combined to carry out comprehensive determine
Disconnected, Mei Jia hospital might have the medical system of oneself, but patient is difficult to obtain in the medical information that other hospitals see a doctor, and
Sometimes patient may ignore it is some before medical history and cause doctor to be unable to judge accurately the state of an illness, delay treatment time.It is existing
The method for thering is technology to solve the problems, such as the complete documentation of medical information not yet.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of medical information safety management based on block chain technology
System comprises the following modules,
Patient information system generates the user name and code key of patient, and anti-for including medical information caused by patient
Feed patient；
Information includes module, and for including block chain, block chain includes that multiple medical informations of record include node；
Information operation module, for including the medical information of patient and the user name of the patient, and to medical information into
Row encryption, is indexed on block chain corresponding medical information for the user name of encrypted medical information and corresponding patient and includes
In node；
Information assigning module distributes the medical treatment in corresponding block chain for the medical information according to patient for the patient
Information includes the access authority of node；
Information common query module is indexed to the user name for the patient that patient is inputted for basis, will in block chain
The medical information of patient corresponding with the user name of the patient recalls.
Preferably, each medical information includes node further include: the user name of itself, medical information connected to it
Include the user name and hash function and timestamp of node.
Preferably, the patient information system, specifically for including the medical information of patient, generate patient user name and
Code key, and included the user name of patient and code key by the way of mapping table, and feed back to patient.
Preferably, the information common query module, specifically for according to the user for being indexed to the patient that patient is inputted
Name, by lucidification disposal, recalls medical information corresponding with the user name of the patient in block chain.
Preferably, information operation module includes that information includes unit, pre-encrypt unit, unit of birdsing of the same feather flock together, extraordinary verification unit；
Information includes unit for including medical information and the patient of patient；Pre-encrypt unit is used for there are 0 value or negative values
Medical information be pre-encrypted, 0 value or negative value are replaced with into preset substitution value；After unit of birdsing of the same feather flock together is used for pre-encrypt
Medical information carry out encryption of birdsing of the same feather flock together；Extraordinary verification unit is used to carry out extraordinary verification to the medical information after birdsing of the same feather flock together to encrypt, right
Extraordinary medical information is marked, and the user name of all encrypted medical informations and corresponding patient is indexed to block
Corresponding medical information is included in node on chain.
The invention has the following beneficial effects:
1. present system, which has, initiates inquiry, obtains sufferer medical treatment record and consults the functions such as desensitization medical data,
The circulation for promoting medical big data is shared, is conducive to the interoperability for promoting medical big data multi-party.
2. utilizing block chain technical notes user's state of an illness data, patient can provide unique subscriber identification when seeing a doctor, from
And doctor can be acquired by the unique subscriber identification of patient before user's state of an illness data, thus more accurately judgement
The state of an illness of user, while also achieving the reasonable of patient data between each hospital and sharing.
Specific embodiment
Below in conjunction with the embodiment of the present invention, the technical scheme in the embodiment of the invention is clearly and completely described,
Obviously, the embodiment described is the embodiment of part of representative of the invention, rather than whole embodiments, this field are general
Other all embodiments obtained belong to protection of the invention to logical technical staff without making creative work
Range.
Present embodiments provide the medical information safety management system based on block chain technology, comprising: patient information system,
For including medical information caused by patient, the user name and code key of patient are generated, and feed back to patient；Information includes mould
Block, for including block chain, block chain includes that multiple medical informations of record include node；Information operation module, for including
The user name of the medical information of patient and the patient, and medical information is encrypted, by encrypted medical information and phase
The user name of the patient answered is indexed on block chain corresponding medical information and includes in node；Information assigning module is used for basis
The medical information of patient includes the access authority of node for the medical information that the patient distributes in corresponding block chain；Information is public
Enquiry module altogether is indexed to the user name for the patient that patient is inputted for basis, by the user with the patient in block chain
The medical information of the corresponding patient of name recalls.
Preferably, each medical information includes node further include: the user name of itself, medical information connected to it
Include the user name and hash function, timestamp of node.
Preferably, the patient information system, specifically for including the medical information of patient, generate patient user name and
Code key, and included the user name of patient and code key by the way of mapping table, and feed back to patient.
Preferably, the information common query module, specifically for according to the user for being indexed to the patient that patient is inputted
Name, by lucidification disposal, recalls medical information corresponding with the user name of the patient in block chain.
With initiating to inquire, acquisition patient sees a doctor to record and consult to desensitize and cure the system of the above embodiment of the present invention design
The functions such as information are treated, the circulation for promoting medical big information is shared, is conducive to promote the multi-party interoperability of the big information of medical treatment.
In one embodiment, information operation module includes that information includes unit, pre-encrypt unit, unit of birdsing of the same feather flock together, extraordinary
Check unit；Information includes unit for including the medical information of patient and the user name of the patient；Pre-encrypt unit is used for
To there are the medical informations of 0 value or negative value to be pre-encrypted, 0 value or negative value are replaced with into preset substitution value；It birdss of the same feather flock together list
Member is for carrying out encryption of birdsing of the same feather flock together to the medical information after pre-encrypt；Extraordinary verification unit is used to carry out the medical information after birdsing of the same feather flock together
Extraordinary verification encryption, is marked extraordinary medical information, and by all encrypted medical informations and corresponding patient
User name is indexed on block chain corresponding medical information and includes in node.
In one embodiment, unit of birdsing of the same feather flock together birdss of the same feather flock together to the medical information after pre-encrypt, specifically includes:
(1) using the medical information of a patient as a medical information collection, it is set as Z, is determined medical in medical information collection Z
The weighted value of each dimension attribute value of information；
(2) medical information in medical information collection Z is carried out according to the maximum attribute value of weighted value descending sequence
Sequence, chooses median therein as first cluster central point W1: calculating between remaining medical information and cluster central point W1
Similarity medical treatment is believed if similarity between medical information zi and cluster central point W1 is greater than the similarity threshold of setting
Breath zi is assigned to cluster central point W1, and is marked；
(3) remaining unlabelled medical information is arranged according to the descending sequence of the maximum attribute value of weighted value
Sequence selects median therein as next cluster central point W λ+1, calculate remaining medical information and cluster central point W λ+1 it
Between similarity；
When medical information zj is unmarked, if the similarity between medical information zj and W λ+1 is greater than the similarity threshold of setting
Value, then be assigned to cluster central point W λ+1 for medical information zj, and be marked；When medical information zj is marked, if medical treatment letter
Ceasing the similarity between zj and W λ+1 is G (zj, W λ+1), similar between medical information zj and the cluster central point that it is distributed now
Degree is G (zj, Wj0), only as G (+1) > of zj, W λ；When G (zj, Wj0), by medical information zj be assigned to cluster central point W λ+
1, remaining situation does not make any operation to marked medical information zj；
(4) (3) are repeated until repeatedly all medical information has all been labeled, executed (5)；
(5) if discovery has the cluster comprising a medical information, the medical information of the cluster is deleted from medical information collection Z
It removes, switchs to execute (2), otherwise execute (6)；
(6) the cluster central point for updating each cluster is the mean value of all medical informations in the cluster, distributes each non-cluster central point
Cluster to where with the highest cluster central point of its similarity, when all cluster central points all no longer update, algorithm stops.
Wherein, if medical information collection Z={ z1, z2 ..., zn }, the dimension of each medical information is all β, seeks medical letter
The coefficient of variation of a dimension attribute value of breath collection Z medical information:
In formula, zia is a dimension attribute value of the medical information zi of medical information collection Z, a=1 ..., β；
The weighted value of each dimension attribute value of medical information collection Z medical information is set according to the following formula:
In formula, Xa indicates that the weighted value of a dimension attribute value of medical information collection Z medical information, a=1 ..., β, Xa are
By the weighted value of a dimension attribute value of the medical information of expert's setting, h is the influence coefficient of setting, and the value range of h is
[0.80,0.90]。
The present embodiment sets the encryption mechanism of birdsing of the same feather flock together for medical information, which can quickly and easily complete medical treatment
Information is birdsed of the same feather flock together, and the number for preassigning cluster is not needed；The present embodiment is according to descending suitable of the maximum attribute value of weighted value
Ordered pair medical information is ranked up, and chooses median therein as each cluster central point, so that the selection of cluster central point is more equal
It is even, be conducive to improve the effect for birdsing of the same feather flock together to medical information.
The present embodiment has the cluster comprising a medical information in discovery, then by the medical information of the cluster from medical information collection Z
Middle deletion can be avoided sky cluster or the cluster of only one medical information so that the medical information will not be re-used as cluster central point
Generation.
Wherein, the similarity between medical information and cluster central point can be calculated using existing similarity function,
It is measured for example, by using cosine similarity, Pearson correlation coefficient etc..
In a preferred embodiment, the calculation formula of the similarity between medical information z4 and cluster central point Wl is set
Are as follows:
In formula, G (zu, Wl) indicates the similarity between medical information zu and cluster central point Wl, and zua indicates medical information zu
A dimension attribute value, Wla indicates a dimension attribute value of cluster central point Wl, and max expression is maximized, and Xa indicates medical information
The weighted value of a dimension attribute value, the weighted value of the c dimension attribute value of Xc expression medical information, c=1 ..., β, β are medical treatment letter
The dimension of breath.
The otherness between two medical informations is measured frequently with absolute distance in the prior art, such as Euclidean distance, graceful
Hatton's distance etc., that is to say, that the distance between two medical informations show that more greatly the similitude of the two is smaller, on the contrary then similar
Property is bigger, but this distance metric mode generally involves all properties of object, and thinks these attributes for apart from degree
The importance of amount is identical.
Compared with the existing technology, the present embodiment innovatively sets the calculation formula of similarity, which is not
Attribute value in same dimension is subject to different weighted values, and difference of the medical information on different dimensions is enabled to obtain area
Point.
All in same range, this is only medical information similar every one-dimensional attribute value of only a pair of of medical information
, therefore, the present embodiment does not use general range formula, but passes through the category of all dimensions between two medical informations
Property value maximum variation degree measures similitude.Since the similarity of the present embodiment only depends on the same one-dimensional of two medical informations
Weighted attribute values ratio, therefore, it has dimension independence, the medical information that this system that is particularly suitable for birdsing of the same feather flock together is included.
In one embodiment, extraordinary verification unit 40 carries out extraordinary point detection, tool to encrypted medical information of birdsing of the same feather flock together
Body includes:
(1) if being considered as the cluster super there are the number threshold value that the medical information number of a cluster is lower than setting after birdsing of the same feather flock together
All medical informations in extraordinary cluster are considered as extraordinary medical information by normal cluster；
(2) similarity between the cluster central point of other normal clusters and the cluster central point of extraordinary cluster is calculated；
(3) similarity between the cluster central point of extraordinary cluster and the cluster central point of normal clusters is greater than setting if it exists
Cluster similarity threshold then using the normal clusters as cluster to be detected, and detects cluster to be detected using the medical information of the extraordinary cluster
In medical information, specifically:
1) the medical information collection for setting the extraordinary cluster is combined into Zk={ z1, z2 .., zk }, by the medical treatment in { z1, z2 .., zk }
Encryption is normalized in information, and will normalize encrypted medical information and be ranked up according to sequence from small to large, will arrange
Medical information after sequence carries out renormalization encryption, obtains the median in the encrypted medical information set of renormalization
zmed；
2) medical information in cluster to be detected is detected, if the medical information zq in cluster to be detected meets following extraordinary condition
When, medical information zB is considered as extraordinary medical information:
In formula, zqa indicates a dimension attribute value of medical information zq, and zmed, a indicate a dimension attribute of median zmed
Value, Gt are the similarity threshold of another setting, and Xa indicates that the weighted value of a dimension attribute value of medical information, Xc indicate medical treatment letter
The weighted value of the c dimension attribute value of breath, c=1 ..., β, β are the dimension of medical information.
Due to comparatively loose between the medical information in the lesser cluster of scale, and relative to other medical informations
It is more isolated, therefore the information in the lesser cluster of scale is usually considered as extraordinary information in the prior art.
Based on this, the present embodiment carries out extraordinary verification to encrypted medical information of birdsing of the same feather flock together, and therefrom innovatively proposes
For detecting whether medical information is extraordinary extraordinary condition, the extraordinary condition is highest extraordinary with similarity according to medical information
Similarity between the median of cluster to determine whether be it is extraordinary, have certain detection accuracy, detection mode is simple and effective.It is logical
It crosses and extraordinary verification is carried out to encrypted medical information of birdsing of the same feather flock together, extraordinary medical information is marked, convenient for checking the people of medical information
Member can determine the extraordinary situation of medical information in time.
Those skilled in the art is not under conditions of departing from the spirit and scope of the present invention that claims determine, also
Various modifications can be carried out to the above content.Therefore the scope of the present invention is not limited in above explanation, but by
The range of claims determines.
Claims (5)
1. a kind of medical information safety management system based on block chain technology, which is characterized in that it comprises the following modules,
Patient information system generates the user name and code key of patient, and feed back to for including medical information caused by patient
Patient；
Information includes module, and for including block chain, block chain includes that multiple medical informations of record include node；
Information operation module for including the medical information of patient and the user name of the patient, and adds medical information
It is close, the user name of encrypted medical information and corresponding patient is indexed on block chain corresponding medical information and includes node
In；
Information assigning module distributes the medical information in corresponding block chain for the medical information according to patient for the patient
Include the access authority of node；
Information common query module is indexed to the user name for the patient that patient is inputted for basis, will be with this in block chain
The medical information of the corresponding patient of the user name of patient recalls.
2. the medical information safety management system according to claim 1 based on block chain technology, which is characterized in that each
The medical information includes node further include: the user name of itself, medical information connected to it include node user name and
Hash function and timestamp.
3. the medical information safety management system according to claim 1 based on block chain technology, which is characterized in that described
Patient information system generates the user name and code key of patient, and using mapping table specifically for including the medical information of patient
Mode includes the user name of patient and code key, and feeds back to patient.
4. the medical information safety management system according to claim 1 based on block chain technology, which is characterized in that described
Information common query module is indexed to the user name for the patient that patient is inputted specifically for basis, by lucidification disposal, in area
Medical information corresponding with the user name of the patient is recalled in block chain.
5. the medical information safety management system according to claim 1-4 based on block chain technology, feature
It is, information operation module includes that information includes unit, pre-encrypt unit, unit of birdsing of the same feather flock together, extraordinary verification unit；Information includes list
Member is for including medical information and the patient of patient；Pre-encrypt unit is used for there are the medical informations of 0 value or negative value
It is pre-encrypted, 0 value or negative value is replaced with into preset substitution value；Unit of birdsing of the same feather flock together is used for the medical information after pre-encrypt
Carry out encryption of birdsing of the same feather flock together；Extraordinary verification unit is used to carry out extraordinary verification to the medical information after birdsing of the same feather flock together to encrypt, to extraordinary medical treatment
Information is marked, and the user name of all encrypted medical informations and corresponding patient is indexed on block chain accordingly
Medical information is included in node.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112185535A (en) * | 2020-10-27 | 2021-01-05 | 广州市家庭医生在线信息有限公司 | Medical information safety management system based on block chain |
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| CN108630289A (en) * | 2018-04-25 | 2018-10-09 | 深圳汇通智能化科技有限公司 | Medical data management system based on block chain |
| CN108959945A (en) * | 2018-07-06 | 2018-12-07 | 腾讯科技（深圳）有限公司 | Medical data sharing method, device, computer-readable medium and electronic equipment |
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2019
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20180268930A1 (en) * | 2015-10-26 | 2018-09-20 | Irm Inc. | Method for Building Cloud-Based Medical Image Database for Protection of Patient Information and Reading Medical Image Therefrom |
| CN108630289A (en) * | 2018-04-25 | 2018-10-09 | 深圳汇通智能化科技有限公司 | Medical data management system based on block chain |
| CN108959945A (en) * | 2018-07-06 | 2018-12-07 | 腾讯科技（深圳）有限公司 | Medical data sharing method, device, computer-readable medium and electronic equipment |
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| CN112185535A (en) * | 2020-10-27 | 2021-01-05 | 广州市家庭医生在线信息有限公司 | Medical information safety management system based on block chain |
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