CN113100828A - Head hoop type sounding movement ultrasonic image detection helmet - Google Patents
Head hoop type sounding movement ultrasonic image detection helmet Download PDFInfo
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- CN113100828A CN113100828A CN202110513450.0A CN202110513450A CN113100828A CN 113100828 A CN113100828 A CN 113100828A CN 202110513450 A CN202110513450 A CN 202110513450A CN 113100828 A CN113100828 A CN 113100828A
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- 238000001514 detection method Methods 0.000 title claims abstract description 15
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims 1
- 238000003384 imaging method Methods 0.000 abstract description 24
- 239000000523 sample Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 238000007405 data analysis Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012285 ultrasound imaging Methods 0.000 description 1
- 230000001755 vocal effect Effects 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/40—Positioning of patients, e.g. means for holding or immobilising parts of the patient's body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/42—Details of probe positioning or probe attachment to the patient
- A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/42—Details of probe positioning or probe attachment to the patient
- A61B8/4209—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames
- A61B8/4227—Details of probe positioning or probe attachment to the patient by using holders, e.g. positioning frames characterised by straps, belts, cuffs or braces
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
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- Radiology & Medical Imaging (AREA)
- Engineering & Computer Science (AREA)
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- Heart & Thoracic Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
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Abstract
The invention discloses a head hoop type sounding movement ultrasonic image detection helmet. Including tying up the bandeau, press the button, go up the supporting beam, flexible soft area, the ear-hang, the slip montant, vertical guide pin bushing, the bolt, the screw hole, the slip horizontal pole, rotatory stake, horizontal guide pin bushing, change buckle and instrument fixation clamp, two ear-hang symmetries set up on tying up the bandeau, two flexible soft area one ends are connected with two ear-hangs respectively, the other end slidable of going up supporting beam and two flexible soft areas cup joints, and cup joint the position and fixed through pressing the button, vertical guide pin bushing sets up on one of them ear-hang lateral surface, the slip montant runs through vertical guide pin bushing, the equidistance is opened has a plurality of screw hole on the slip montant, vertical guide pin bushing is connected through the. The invention can better stabilize the imaging position between the head of the person to be sampled and the ultrasonic imaging probe, and the person to be sampled can freely implement pronunciation action, thereby leading the pronunciation process to accord with the real pronunciation state of the speaker.
Description
Technical Field
The invention relates to the technical field of ultrasonic image detection of tongue movement in pronunciation mechanism research, in particular to a head band type pronunciation movement ultrasonic image detection helmet.
Background
At present, in order to ensure that the ultrasonic imaging data does not generate unnecessary result difference (including imaging contour deformation and imaging tissue ectopy) due to the change of an external survey position in the ultrasonic imaging process of the tongue during the collection of the vocal movement, researchers should ensure that the Euclidean distance between the lip of an experimenter (a person to be sampled) and a table edge (a platform for deploying an audio acquisition device) and the Euclidean distance between an ultrasonic imaging probe and the table edge are kept relatively unchanged. Meanwhile, in the sampling process, a sampler should ensure that a gelatin part (an ultrasonic emitter) of the ultrasonic probe is aligned with the central axis of the face of a person so as to ensure that the tongue movement plane is coincident with the ultrasonic imaging plane.
To reduce unnecessary positional changes between a head and an ultrasonic imaging probe and interference due to (unnecessary) changes in the external survey position as much as possible. In the experimental process, the common head stabilizing method is as follows: researchers collect data by placing the head of the person being sampled on a stationary backrest or cradle while the microphone and ultrasound imaging probe are secured to the microphone cradle directly in front of the person being sampled. The acquisition mode can obtain a more stable data result (shown as less ultrasonic imaging ghost, relatively fixed tongue movement trend and movement area and lower imaging white spot occurrence frequency). However, the sampled person cannot cooperate with the experiment for a long time due to the problems of discomfort caused by the above manner, large occupied area of the device and the like, so that it is difficult to provide sufficient data support for the research (in the aspects of data analysis and mechanism modeling) of pronunciation movement. In order to solve the problem, the inventor proposes a head hoop type sounding motion ultrasonic image detection helmet.
Disclosure of Invention
In view of the above technical deficiencies, the present invention provides a head band type pronunciation movement ultrasonic image detection helmet, which can better stabilize the imaging position between the head of the person to be sampled and an ultrasonic imaging probe in the pronunciation process, and the person to be sampled can more freely implement normal pronunciation actions according to the pronunciation habits and modes of the person to be sampled, so that the pronunciation process is more in line with the real pronunciation state of the person to be sampled.
In order to solve the technical problems, the invention adopts the following technical scheme:
head band type sounding movement ultrasonic image detection helmet is characterized by comprising a head band, a press button, an upper support beam, a flexible soft belt, ear hangers, a sliding vertical rod, a longitudinal guide sleeve, a bolt, threaded holes, a sliding transverse rod, a rotary pile, a transverse guide sleeve, a replacement buckle and an instrument fixing clamp, wherein the two ear hangers are symmetrically arranged on the head band, one ends of the two flexible soft belts are respectively connected with the two corresponding ear hangers, the other ends of the upper support beam and the two flexible soft belts can be in sliding sleeve joint, the sleeve joint position is fixed through the press button, the longitudinal guide sleeve is arranged on the outer side surface of one of the ear hangers, the sliding vertical rod penetrates through the longitudinal guide sleeve, a plurality of threaded holes are equidistantly formed in the sliding vertical rod, the longitudinal guide sleeve is connected with the corresponding threaded holes in the sliding vertical rod through the bolt, the bottom end of the sliding vertical rod is of a circular columnar structure, the horizontal guide sleeve is fixedly connected with the bottom of the rotary pile, the sliding transverse rod transversely penetrates through the horizontal guide sleeve, a plurality of threaded holes are formed in the sliding transverse rod at equal intervals, the horizontal guide sleeve is connected with the corresponding threaded holes in the sliding transverse rod through bolts, the instrument fixing clamp is composed of a clamping sleeve and a connecting rod, and one end of the connecting rod is detachably connected with one end of the sliding transverse rod through a replacing buckle.
Preferably, the press button comprises a key sheet, an upper cavity, a button body shell, an elastic sheet, a lower cavity and a supporting spring, wherein the inner cavity of the button body shell is divided into the upper cavity and the lower cavity, the width of the upper cavity is smaller than that of the lower cavity, the elastic sheet is positioned in the lower cavity, the bottom of the elastic sheet is connected with the inner bottom surface of the button body shell through the supporting spring, the key sheet is arranged at the top of the button body shell, and the key sheet is connected with the elastic sheet; the flexible soft belt penetrates through the upper cavity, and a plurality of groove buckles are arranged at the bottom of the flexible soft belt at equal intervals;
preferably, rotatory stake includes gear shaft, rotatory stake main part shell, gear, hasp, stopper and pressure spring, gear shaft one end and the inside bottom surface rotatable coupling of rotatory stake main part shell, rotatory stake main part shell is upwards worn out to the gear shaft other end, the gear housing is arranged in on the gear shaft, and is located rotatory stake main part shell, medial surface and lower medial surface are provided with the stopper symmetrically on the rotatory stake main part shell, and the hasp is located between two upper and lower stoppers, the one end of hasp is most advanced, and the card is arranged in between two adjacent teeth of gear, the other end of hasp is connected through pressure spring and rotatory stake main part shell medial surface.
The invention has the beneficial effects that: the ultrasonic imaging device has the advantages that the imaging position between the head of a sampled person and the ultrasonic imaging probe can be stabilized and fixed to a certain extent in an ultrasonic imaging experiment, the imaging contour deformation and the imaging organization ectopic probability are reduced, the device can help the sampled person to implement the pronunciation action more freely, the device accords with the pronunciation habit and the mode of the device, the pronunciation process accords with the real pronunciation state of the sampled person, and the acquired experimental data can be ensured to be more accurate and real. Meanwhile, long-term effective data acquisition can provide long-term, stable and effective data source information for later data analysis and pronunciation mechanism model establishment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural view of a head band type articulation ultrasonic image detection helmet provided by the present invention;
FIG. 2 is a schematic structural view of the head band type sounding movement ultrasonic image detecting helmet in an initial state of pressing a button according to the present invention;
FIG. 3 is a schematic structural view of the head band type articulation ultrasonic image detection helmet according to the present invention, wherein the support spring inside the push button is in a compressed state;
FIG. 4 is a schematic structural view of a groove buckle on a flexible soft band of the head band type sounding movement ultrasonic image detection helmet provided by the invention;
FIG. 5 is a schematic structural view of a head band type sounding movement ultrasonic image detection helmet rotating pile provided by the present invention;
description of reference numerals:
the binding band area 1, press the button 2, go up supporting beam 3, flexible area 4, the ear-hang 5, the slip montant 6, vertical guide pin bushing 7, bolt 8, screw hole 9, slip horizontal pole 10, rotatory stake 11, horizontal guide pin bushing 12, change buckle 13, instrument fixation clamp 14, button piece 15, epicoele 16, button main part shell 17, shell fragment 18, cavity of resorption 19, supporting spring 20, recess buckle 21, gear shaft 22, rotatory stake main part shell 23, gear 24, hasp 25, stopper 26, pressure spring 27.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, a head band type sounding movement ultrasonic image detection helmet comprises a head band 1, a press button 2, an upper support beam 3, flexible soft belts 4, ear hangers 5, a sliding vertical bar 6, a longitudinal guide sleeve 7, a bolt 8, a threaded hole 9, a sliding cross bar 10, a rotary pile 11, a transverse guide sleeve 12, a replacing buckle 13 and an instrument fixing clamp 14, wherein the two ear hangers 5 are symmetrically arranged on the head band 1, one end of each of the two flexible soft belts 4 is respectively connected with the corresponding two ear hangers 5, the upper support beam 3 and the other ends of the two flexible soft belts 4 can be slidably sleeved, the sleeved positions are fixed through the press button 2, the longitudinal guide sleeves 7 are arranged on the outer side surface of one of the ear hangers 5, the sliding vertical bar 6 penetrates through the longitudinal guide sleeve 7, a plurality of threaded holes 9 are equidistantly arranged on the sliding vertical bar 6, the longitudinal guide sleeve 7 is connected with the corresponding threaded holes 9 on the sliding vertical bar, the bottom of slip montant 6 is circular columnar structure, and rotatory stake 11 is connected with the 6 bottom of slip montant, horizontal guide pin bushing 12 and 11 bottom fixed connection of rotatory stake, slip horizontal pole 10 transversely runs through horizontal guide pin bushing 12, equidistant division has a plurality of screw hole 9 on the slip horizontal pole 10, horizontal guide pin bushing 12 is connected through corresponding screw hole 9 on bolt 8 and the slip horizontal pole 10, instrument fixation clamp 14 comprises pressing from both sides cover and connecting rod, the connection can be dismantled through the one end of changing buckle 13 and slip horizontal pole 10 to connecting rod one end.
Further, the press button 2 comprises a key sheet 15, an upper cavity 16, a button body shell 17, an elastic sheet 18, a lower cavity 19 and a supporting spring 20, wherein the inner cavity of the button body shell 17 is divided into the upper cavity 16 and the lower cavity 19, the width of the upper cavity 16 is smaller than that of the lower cavity 19, the elastic sheet 18 is located in the lower cavity 19, the bottom of the elastic sheet 18 is connected with the inner bottom surface of the button body shell 17 through the supporting spring 20, the key sheet 15 is arranged at the top of the button body shell 17, and the key sheet 15 is connected with the elastic sheet 18; the flexible soft belt 4 penetrates through the upper cavity 16, and a plurality of groove buckles 21 are arranged at the bottom of the flexible soft belt 4 at equal intervals;
further, rotatory stake 11 includes gear shaft 22, rotatory stake main part shell 23, gear 24, hasp 25, stopper 26 and pressure spring 27, gear shaft 22 one end and the inside bottom surface rotatable coupling of rotatory stake main part shell 23, rotatory stake main part shell 23 is upwards worn out to the gear shaft 22 other end, gear 24 overlaps arranges in on the gear shaft 22, and is located rotatory stake main part shell 23, medial surface and lower medial surface are provided with stopper 26 on the rotatory stake main part shell 23 symmetrically, and hasp 25 is located between two upper and lower stoppers 26, the one end of hasp 25 is most advanced, and the card arranges in between the adjacent two teeth of gear 24, the other end of hasp 25 is connected through pressure spring 27 and rotatory stake main part shell 23 medial surface.
When in use, the helmet is worn on the head of an experimenter, and the instrument fixing clamp 14 is used for fixing the ultrasonic probe; the instrument holder 14 can be removed by replacing the clip 13 to replace the ultrasonic probe;
the headband 1 is used for adjusting the distance between the helmet and the front and the back after being worn; the upper supporting beam 3 is used for supporting the upper gravity of the helmet; the press button 2 is used for adjusting the position distance of the flexible soft belt 4, when the position of the flexible soft belt 4 is adjusted, the press key sheet 15 is pressed, the elastic sheet 18 presses the supporting spring 20, the supporting spring 20 is compressed, the flexible soft belt 4 is loosened and is not limited by the elastic sheet 18 at the moment, and the flexible soft belt can move in the horizontal direction, so that the groove buckle 21 is replaced and clamped; after the key sheet 15 is released, the supporting spring 20 is recovered, and the elastic sheet 18 compresses the flexible soft belt 4 for fixing;
the ear hanger 5 is used for placing human ears; the rotary pile 11 is used for adjusting the position of the cross-section ultrasonic probe; when the position is adjusted, external force is applied to rotate the gear shaft 22, the gear shaft 22 drives the gear 24 to rotate, and inward force is applied to the lock catch 25; the lock catch 25 which is forced contracts inwards and slowly slides along the involute of the gear 24, and when the lock catch 25 which is forced outwards by the compression spring 27 moves to the position farthest away from the center of the circle, the original length of the lock catch 25 is restored, so that the gear 24 is locked;
the horizontal position of the ultrasonic probe on the instrument holder 14 can be adjusted by adjusting the sliding cross bar 10. During adjustment, the bolt 8 on the transverse guide sleeve 12 is loosened, and then the sliding cross bar 10 is horizontally slid along the transverse guide sleeve 12. After the adjustment is completed, the bolt 8 is screwed on the corresponding threaded hole 9 on the sliding cross rod 10;
the height position of the ultrasonic probe on the instrument fixing clamp 14 can be adjusted by adjusting the sliding vertical rod 6 up and down. During adjustment, the bolt 8 on the longitudinal guide sleeve 7 is unscrewed, and then the sliding vertical rod 6 slides up and down along the longitudinal guide sleeve 7. After the adjustment is completed, the bolt 8 is screwed on the corresponding threaded hole 9 on the sliding vertical rod 6;
the width of the upper cavity 16 is smaller than that of the lower cavity 19, so that the elastic sheet 18 can be limited in the lower cavity 19.
The design of the invention can play a certain stabilizing and fixing role on the imaging position between the head of the sampled person and the ultrasonic imaging probe in the ultrasonic imaging experiment, reduces the imaging contour deformation and the imaging organization ectopic probability, and the device can help the sampled person to carry out the pronunciation action more freely and accord with the pronunciation habit and the mode of the device, thereby leading the pronunciation process to accord with the real pronunciation state of the sampled person more and ensuring the acquired experimental data to be more accurate and real. Meanwhile, long-term effective data acquisition can provide long-term, stable and effective data source information for later data analysis and pronunciation mechanism model establishment.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (3)
1. Head band type sounding movement ultrasonic image detection helmet is characterized by comprising a head band, a press button, an upper support beam, a flexible soft belt, ear hangers, a sliding vertical rod, a longitudinal guide sleeve, a bolt, threaded holes, a sliding transverse rod, a rotary pile, a transverse guide sleeve, a replacement buckle and an instrument fixing clamp, wherein the two ear hangers are symmetrically arranged on the head band, one ends of the two flexible soft belts are respectively connected with the two corresponding ear hangers, the other ends of the upper support beam and the two flexible soft belts can be in sliding sleeve joint, the sleeve joint position is fixed through the press button, the longitudinal guide sleeve is arranged on the outer side surface of one of the ear hangers, the sliding vertical rod penetrates through the longitudinal guide sleeve, a plurality of threaded holes are equidistantly formed in the sliding vertical rod, the longitudinal guide sleeve is connected with the corresponding threaded holes in the sliding vertical rod through the bolt, the bottom end of the sliding vertical rod is of a circular columnar structure, the horizontal guide sleeve is fixedly connected with the bottom of the rotary pile, the sliding transverse rod transversely penetrates through the horizontal guide sleeve, a plurality of threaded holes are formed in the sliding transverse rod at equal intervals, the horizontal guide sleeve is connected with the corresponding threaded holes in the sliding transverse rod through bolts, the instrument fixing clamp is composed of a clamping sleeve and a connecting rod, and one end of the connecting rod is detachably connected with one end of the sliding transverse rod through a replacing buckle.
2. The head band type sounding movement ultrasound image detection helmet according to claim 1, wherein the press button comprises a button sheet, an upper cavity, a button body shell, a spring sheet, a lower cavity and a support spring, wherein the inner cavity of the button body shell is divided into the upper cavity and the lower cavity, the width of the upper cavity is smaller than that of the lower cavity, the spring sheet is located in the lower cavity, the bottom of the spring sheet is connected with the inner bottom surface of the button body shell through the support spring, the button sheet is arranged at the top of the button body shell, and the button sheet is connected with the spring sheet; the flexible soft area passes from the epicoele, the bottom equidistance of flexible soft area is provided with a plurality of recess buckle.
3. The helmet of claim 1, wherein the rotation pile comprises a gear shaft, a rotation pile body shell, a gear, a lock catch, a limiting block and a compression spring, one end of the gear shaft is rotatably connected to the bottom surface inside the rotation pile body shell, the other end of the gear shaft penetrates upwards out of the rotation pile body shell, the gear is sleeved on the gear shaft and located inside the rotation pile body shell, the limiting block is symmetrically arranged on the upper inner side surface and the lower inner side surface of the rotation pile body shell, the lock catch is located between the upper limiting block and the lower limiting block, one end of the lock catch is pointed and clamped between two adjacent teeth of the gear, and the other end of the lock catch is connected with the inner side surface of the rotation pile body shell through the compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110513450.0A CN113100828A (en) | 2021-05-11 | 2021-05-11 | Head hoop type sounding movement ultrasonic image detection helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110513450.0A CN113100828A (en) | 2021-05-11 | 2021-05-11 | Head hoop type sounding movement ultrasonic image detection helmet |
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| CN113100828A true CN113100828A (en) | 2021-07-13 |
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| CN202110513450.0A Pending CN113100828A (en) | 2021-05-11 | 2021-05-11 | Head hoop type sounding movement ultrasonic image detection helmet |
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| CN212756950U (en) * | 2020-04-25 | 2021-03-23 | 天津中信仁恒机电工程有限公司 | Fire hydrant detection device |
| CN213046984U (en) * | 2020-05-07 | 2021-04-27 | 贵州省人民医院 | Automatic coupling probe combination device and automatic agent supply probe combination device for ultrasound department |
| CN214804872U (en) * | 2021-05-11 | 2021-11-23 | 天津大学 | Head hoop type sounding movement ultrasonic image detection helmet |
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2021
- 2021-05-11 CN CN202110513450.0A patent/CN113100828A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106456995A (en) * | 2014-02-28 | 2017-02-22 | Msp有限公司 | Helmet-type low-intensity focused ultrasound stimulation device and system |
| CN206729904U (en) * | 2016-12-04 | 2017-12-12 | 无锡圣诺亚科技有限公司 | Suspension arm Probe Ultrasonic Searching instrument |
| US20200000428A1 (en) * | 2017-03-16 | 2020-01-02 | Neurosona Co., Ltd. | Medical headgear and transcranial ultrasound transmission device comprising the same |
| CN107233183A (en) * | 2017-08-08 | 2017-10-10 | 张洪伟 | A kind of multi-functional Pediatric Clinic diagnostic device |
| CN109567873A (en) * | 2018-12-07 | 2019-04-05 | 飞依诺科技(苏州)有限公司 | Wearable ultrasonic scan equipment |
| CN109464203A (en) * | 2018-12-30 | 2019-03-15 | 孙玉红 | A kind of gynecological clinic wear-type operation auxiliary device |
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| CN214804872U (en) * | 2021-05-11 | 2021-11-23 | 天津大学 | Head hoop type sounding movement ultrasonic image detection helmet |
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