阅读说明：本技术 一种手持超声探头连接器的设计方法 (Design method of handheld ultrasonic probe connector ) 是由 杜春宁 彭江 李腾飞 于 2019-09-17 设计创作，主要内容包括：本发明涉及一种手持超声探头连接器的设计方法,所述手持超声设备包括主机和探头两部分,二者通过探头连接器进行连接；所述连接器的引脚定义面中包括了阵元引脚Pin[0]～Pin[N-1](N为阵元数)、地引脚以及未定义引脚；所述连接器引脚定义面具有几何中心对称性,对称中心为O；所述阵元引脚几何分布上关于所述对称中心O对称；每一对对称分布的阵元引脚序号之和相等,等于最大序号与最小序号之和；所述地引脚几何分布上关于所述对称中心O对称。(The invention relates to a design method of a handheld ultrasonic probe connector, wherein the handheld ultrasonic device comprises a host and a probe which are connected through the probe connector; the Pin definition surface of the connector comprises array element pins Pin [0] to Pin [ N-1] (N is the number of array elements), a ground Pin and an undefined Pin; the connector pin definition surface has geometric center symmetry, and the symmetry center is O; the array element pins are geometrically distributed and symmetrical about the symmetry center O; the sum of the serial numbers of the pins of each pair of array elements which are symmetrically distributed is equal to the sum of the maximum serial number and the minimum serial number; the ground pins are geometrically symmetrical about the center of symmetry O.)

1. A design method of a handheld ultrasonic probe connector is disclosed, wherein the handheld ultrasonic device comprises a host and a probe which are connected through the probe connector; the Pin definition surface of the connector comprises array element pins Pin [0] to Pin [ N-1] (N is the number of array elements), a ground Pin and an undefined Pin;

the method is characterized in that:

a. the connector pin definition surface has geometric center symmetry, and the symmetry center is O;

b. the array element pins are geometrically distributed and symmetrical about the symmetry center O;

c. the sum of the serial numbers of the pins of each pair of array elements which are symmetrically distributed is equal to the sum of the maximum serial number and the minimum serial number;

d. the ground pins are geometrically symmetrical about the center of symmetry O.

Technical Field

The invention relates to the technical field of ultrasonic equipment, in particular to a design method of a handheld ultrasonic probe connector.

Background

With the rapid development of the field of mobile medical treatment, more and more handheld ultrasonic devices appear in domestic and foreign markets, most of the handheld ultrasonic devices can be held by a single hand, image information is transmitted by using wifi or usb, and part of machines can even be connected to the universal mobile device, so that the application scenes of the ultrasonic device are greatly enriched, and the ultrasonic device can play a role in more types of medical diagnosis.

In the hand-held ultrasonic apparatus, there are two types according to whether the probe can be replaced. Because the ultrasonic sound head array element is many, and the connecting wire is many, and there is great degree of difficulty in designing probe connector on small-size handheld device, consequently, some producers design into the form that can not change the probe with their product to guarantee the stability of probe work. The method has the defects that a user needs to be provided with a plurality of devices to support different inspection requirements, the cost is high, and the management is not easy.

And the other part of the product is designed in a mode of replaceable probes, and the device has the advantages that one host can be provided with a plurality of probes, the cost is relatively low, and the management is relatively simple. The problems they are primarily to overcome are the stability and durability of the probe connections, and the ease with which the probe can be changed. Because the volume of the probe connector of the handheld ultrasonic equipment is small, the probe connector is easy to damage due to improper plugging force, and therefore, the reasonable design is favorable for prolonging the service life of the equipment.

Disclosure of Invention

Because the appearance of supersound sound head is generally symmetrical, consequently, can design a probe connector that supports positive and negative plug of probe, difficult the condition that damages the probe on the contrary because inserting appears like this, the user of being convenient for changes the probe, and the design of symmetry more is favorable to making the atress even, guarantees the stability of probe connection.

In view of the above, the main objective of the present invention is to provide a design method of a handheld ultrasonic probe connector to support the forward and backward plugging of the probe.

A design method of a handheld ultrasonic probe connector is disclosed, wherein the handheld ultrasonic device comprises a host and a probe which are connected through the probe connector; the Pin definition surface of the connector comprises array element pins Pin [0] to Pin [ N-1] (N is the number of array elements), a ground Pin and an undefined Pin;

the method is characterized in that:

a. the connector pin definition surface has geometric center symmetry, and the symmetry center is O;

b. the array element pins are geometrically distributed and symmetrical about the symmetry center O;

c. the sum of the serial numbers of the pins of each pair of array elements which are symmetrically distributed is equal to the sum of the maximum serial number and the minimum serial number;

d. the ground pins are geometrically symmetrical about the center of symmetry O.

Drawings

FIG. 1 is a schematic view of a hand-held ultrasound device according to the present invention;

FIG. 2 is a diagram showing the relationship between the male pin and the female pin of the connector according to the present invention when the probe is inserted;

FIG. 3 is a diagram showing the relationship between the male pin and the female pin of the connector according to the present invention under the condition of reverse insertion of the probe;

fig. 4 is a schematic diagram of a pin definition plane according to the present invention.

Detailed Description

The design method of the handheld ultrasonic probe connector of the present invention is further described in detail below with reference to the accompanying drawings and embodiments of the present invention. Without loss of generality, the present invention is described with the number of array elements N being 4.

FIG. 1 is a schematic view of a hand-held ultrasound device according to the present invention. It mainly comprises a 101 host part, a 102 probe part and a 103 connector part connecting the two. The male head (or female head) of the 103 connector is connected with the 104 transmitting and receiving module in the 101 host computer, and the female head (or male head) of the 103 connector is connected with the 105 sound head in the 102 probe. And the signal lines 0-3 defined in the 104 transmitting and receiving module are correspondingly connected to the array elements 0-3 of the 105 sound head through the 103 connector so as to ensure the normal operation of the ultrasonic transmitting and receiving process.

First, the conditions to be satisfied to support the forward and reverse insertion of the probe will be described.

Fig. 2 is a diagram showing the correspondence between the male pin and the female pin of the connector when the probe is inserted positively. At this time, the pin sequence defined in the 204 male header is completely consistent with the pin sequence defined in the 205 female header, so that the signal lines 0-3 of the 203 transmitting and receiving module and the array elements 0-3 in the 206 sound head are mapped one by one, and the probe is normally connected.

Fig. 3 is a diagram showing the correspondence between the male pin and the female pin of the connector under the condition of reverse insertion of the probe according to the present invention. The reverse insertion is actually that the 306 sound head rotates 180 degrees, and in order to ensure normal operation of transmitting and receiving, the signal lines 0-3 of 303 transmitting and receiving modules need to be mapped to the array elements 3-0 in the 206 sound head one by one. Since the sound head does not distinguish between the front and the back, the front-to-back mapping relationship is equivalent to the sequential mapping relationship in the time of the front insertion shown in fig. 2.

When the pin number defined by the male header 304 is x and the pin number defined by the female header 305 is y, the mapping relationship can be expressed as:

y is-x + a, a is constant

It is easy to know that a is the sum of the maximum pin number and the minimum pin number.

The above equation can again be expressed as:

x+y＝a

the probe rotates 180 degrees in reverse plugging, which is a centrosymmetric relation, namely, the two pin serial numbers which are centrosymmetric are required to meet the requirement that the sum is constant, and the constant is equal to the sum of the maximum pin serial number and the minimum pin serial number.

The following explains that the designing method according to the present invention can satisfy the above-described conditions.

Fig. 4 is a schematic diagram of a pin definition plane according to the present invention. The 401 pin definition plane has geometric central symmetry about the origin O, and structurally meets the requirements of positive and negative insertion.

The groups of Pin 0-Pin 3 are Pin0, Pin2, Pin1 and Pin3 according to odd-even. According to the principle that the sum of a pair of Pin numbers with central symmetry relationship is equal to the sum of the maximum Pin number and the minimum Pin number, Pin0 corresponds to Pin3, and Pin1 corresponds to Pin 2. Pin0 and Pin2 are distributed above the x-axis, and then Pin3 is distributed to a position symmetrical to Pin0 about the center of O according to the central symmetry, and Pin1 is distributed similarly. The pins Gnd are distributed symmetrically at the four corners.

It is easy to understand that when the probe is reversely inserted, pins 0-3 defined by the male connector of the connector are just mapped to pins 3-0 defined by the female connector, and meanwhile, the ground Gnd also ensures communication. The requirement of positive and negative insertion of the probe is met.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.