CN108186054B - Ophthalmology B ultrasonic examination device - Google Patents
Ophthalmology B ultrasonic examination device Download PDFInfo
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- CN108186054B CN108186054B CN201810050930.6A CN201810050930A CN108186054B CN 108186054 B CN108186054 B CN 108186054B CN 201810050930 A CN201810050930 A CN 201810050930A CN 108186054 B CN108186054 B CN 108186054B
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- A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
- A61B8/10—Eye inspection
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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
- A61B8/40—Positioning of patients, e.g. means for holding or immobilising parts of the patient's body
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Abstract
The invention provides an ophthalmological B ultrasonic examination device, which comprises a B ultrasonic machine and an annular rotary support, wherein one side of the rotary support is provided with a quick positioning mechanism connected with an inspection table, the inner wall of the rotary support is provided with a rotary disc, positioning pits are uniformly distributed on the upper surface of the rotary support, and the rotary disc is provided with positioning elastic sheets matched with the positioning pits; the rotary disk is provided with a scanning head bracket which can slide along the axial direction of the axis of the rotary disk; the scanning head bracket is provided with an axial scanning head, and the scanning head bracket is also provided with a longitudinal cutting scanning head and a transverse cutting scanning head which are positioned at two sides of the axial scanning head; a telescopic sleeve and a metal shaping hose are arranged between the longitudinal cutting scanning head and the transverse cutting scanning head and between the scanning head support, and the transverse cutting scanning head can rotate 180 degrees along the axis of the transverse cutting scanning head. The invention can quickly carry out axial scanning, longitudinal scanning and transverse scanning on the eyeball, has accurate positioning, reduces the fatigue of an operator and quickly switches the pictures of three scanning modes.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to an ophthalmologic B ultrasonic examination device.
Background
B-ultrasonography of the eyeball is one of the methods for examining the condition of the eye in the case of ametropia, which can examine white pupil, ametropia, retinal and choroidal detachment, fundus eminence, eyeball atrophy, unexplained visual deterioration and ocular hypertension, suspected intraocular parasites and posterior scleritis, postoperative superficial anterior chamber, vitreous opacity or hematocele; eyeball protrusion caused by various reasons, such as tumor, inflammation, angiopathy and pseudoeyeball protrusion; suspected ocular fasciitis, ocular dyskinesia; measurement of lacrimal areas, eyelid and periorbital tumors and muscularis oculi and optic nerve; perforation and posterior rupture of the eyeball, qualitative and magnetic tests of foreign bodies in the eye, and suspicious intraorbital hematoma or emphysema; suspicious inflammation, tumor, cyst, vascular malformation, direct arteriovenous traffic, etc. Interventional ultrasound refers to ultrasound-guided needle biopsy, surgical guidance for the removal of non-magnetic foreign bodies from the eye, and on-table probing for ocular tumor surgery. Advanced B-ultrasound has vitreous body enhancing function, can detect fine vitreous body turbidity and posterior separation, and has great significance for vitreoretinal surgery.
The conventional B-mode ultrasonic detection method for the eyeball comprises axial scanning, longitudinal scanning and transverse scanning, the scanning point positions are more, the requirement on an operator is higher, axial scanning, longitudinal scanning and transverse scanning are generally carried out by one scanning head, shaking often occurs during scanning, the image is not easy to show, the hand fatigue of the operator is easily caused, and therefore the operation is inconvenient.
Disclosure of Invention
In view of the above problems, the present invention is directed to an ophthalmologic B-ultrasonic inspection apparatus capable of performing axial scanning, longitudinal scanning, and transverse scanning on an eyeball quickly, positioning accurately, reducing operator fatigue, and switching the three scanning modes quickly.
Aiming at the problems, the following technical scheme is provided: an ophthalmological B-ultrasonic examination device comprises a B-ultrasonic machine and an annular rotary support, wherein a quick positioning mechanism connected with an inspection table is arranged on one side of the rotary support, a rotary disc capable of rotating relative to the rotary support is arranged on a rotary surface on the inner wall of the rotary support, 8 positioning pits are uniformly distributed on the upper end surface of the rotary support, and a positioning elastic sheet is arranged on the rotary disc and matched with the positioning pits to realize rotary positioning; the rotary disk is provided with a scanning head bracket which penetrates through the rotary disk and can slide along the axial direction of the axis of the rotary disk; the scanning head bracket is provided with a shaft position scanning head which extends downwards and is coaxial with the rotary axis of the rotary disc, the scanning head bracket is also provided with a longitudinal cutting scanning head and a transverse cutting scanning head which are equally divided by 180 degrees and are positioned at two sides of the shaft position scanning head, and the shaft position scanning head, the longitudinal cutting scanning head and the transverse cutting scanning head all point to the central point of the eyeball; a telescopic sleeve and a metal shaping hose are arranged between the longitudinal cutting scanning head and the transverse cutting scanning head and between the scanning head support, and the transverse cutting scanning head can rotate 180 degrees along the axis of the transverse cutting scanning head.
In the structure, the rotary disc and the three groups of scanning heads are arranged in a rotatable manner, so that the rotary disc and the three groups of scanning heads are positioned at the 12 point position, the 1 point 30 position, the 3 point position, the 4 point 30 position, the 6 point position, the 7 point 30 position, the 9 point position and the 10 point 30 position, and the scanning head positions required by transverse cutting scanning (horizontal transverse cutting, vertical transverse cutting and oblique transverse cutting), longitudinal cutting scanning and axial scanning (horizontal axis H, vertical axis V and oblique axis O) are realized, quick positioning is realized, the positioning position is accurate, the inspection accuracy is improved, the telescopic sleeve is used for adjusting the fit clearance between the transverse cutting scanning head and the longitudinal cutting scanning head and eyeballs, the metal shaping hose is convenient for fine adjustment of the positions of the transverse cutting scanning head and the longitudinal cutting scanning head, and the detection effect is improved.
The invention is further arranged in that the upper surface of the rotary disk is provided with an arc-shaped lifting spring sheet, one end of the lifting spring sheet is fixed on the rotary disk, the middle part of the lifting spring sheet is connected with the scanning head bracket, the other end of the lifting spring sheet applies elasticity to the direction opposite to the upper surface of the rotary disk and is provided with a lifting screw which is propped against the surface of the rotary disk, so that the pressure of the axial scanning head on the scanning head bracket on the surface of the eyeball is kept between 20g and 60 g.
In the structure, when a patient lies on the inspection bench, when the rotary support is moved to the position above eyeballs, the height of the eyeballs on the position of the inspection bench is easy to change due to the size of the head of the patient, the lifting screw is arranged to support the scanning head support, the scanning head is prevented from being in contact with the eyeballs when the rotary support is positioned, the lifting screw is loosened after the position is determined, the scanning head support is put down, the scanning head is convenient to be in contact with the eyeballs, meanwhile, the change in the height direction is easy to occur due to shaking of the head of the patient during detection, when the head of the patient is slightly lifted, the contact between the eyeballs and the scanning head can enable the scanning head support to be lifted upwards due to the contact of the eyeballs and the scanning head is prevented from being damaged due to rigid positioning, the weight of 20g-60g can ensure good contact between the.
The invention is further arranged that the scanning head bracket is provided with a switch for switching signals of the axial scanning head, the longitudinal cutting scanning head and the transverse cutting scanning head.
In the structure, the change-over switch can quickly switch the images transmitted by the scanning heads to the B-ultrasonic machine, namely, the three scanning heads are sequentially connected with the B-ultrasonic machine according to the requirement, so that the fed-back images in other scanning modes under the current scanning mode can be quickly observed during axial scanning, longitudinal scanning or transverse scanning.
The invention is further arranged in that the scanning head bracket comprises three sliding barrels which can slide along the axial direction of the rotary disc, wherein one sliding barrel is coaxial with the axis of the rotary disc, the other two sliding barrels are positioned at the two sides of the rotary disc to enable the other two sliding barrels to be arranged in a straight line, the axial scanning head is positioned on the sliding barrel at the middle position, and the longitudinal scanning head and the transverse scanning head are positioned on the other two sliding barrels.
In the structure, the sliding barrel can realize the lifting of the scanning head bracket, the structure can be simplified, the weight is reduced, and the lifting elastic piece is convenient to control the pressing weight.
The invention is further arranged in that the upper end of the sliding barrel is provided with a transverse bracket which is used for connecting three sliding barrels into a whole, the transverse bracket is provided with a signal interface, and the change-over switch is arranged at the signal interface; the lifting elastic sheet is connected with the sliding cylinder at the middle position.
In the structure, the signal interface is connected with the B ultrasonic machine through a cable.
The invention is further provided that one end of the telescopic sleeve is connected with the sliding cylinder on the scanning head bracket, and the other end is connected with the metal shaping hose.
In the above-mentioned structure, if connect the telescope tube after metal forming hose links to each other with the slide cartridge earlier, can increase metal forming hose's burden in weight, consequently also need select the better metal forming hose of large-size rigidity for use, but this adjustment sensitivity that can make metal forming hose reduces.
The invention is further provided that the longitudinal cutting scanning head is connected with the metal shaping hose, and a rotary joint is arranged between the transverse cutting scanning head and the metal shaping hose.
In the above configuration, when the traverse scanning head performs the horizontal traverse, the vertical traverse, and the oblique traverse, the 1-dot 30 position, the 3-dot position, the 4-dot 30 position, and the 6-dot position are opposite to the mark points of the 7-dot 30 position, the 9-dot position, the 10-dot 30 position, and the 12-dot position, and therefore, the traverse scanning head is rotated by the rotary joint.
The invention is further set up that the positioning spring plate is provided with a positioning bead matched with the positioning pit, the axial scanning head mark point points to the plane position of the positioning bead projected along the axial direction of the rotary disc, the longitudinal cutting scanning head mark point faces the axial direction of the rotary disc, and the transverse cutting scanning head mark point and the axial scanning head mark point are in the same direction or opposite to each other through rotation.
In the structure, the mark points can facilitate the matching of the currently detected mode and the picture of the B-ultrasonic machine.
The telescopic sleeve is further provided with a positioning screw, the outer wall of one end of the metal shaping hose is provided with a limiting groove which is formed along the axial direction of the metal shaping hose, one end of the metal shaping hose, which is provided with the limiting groove, is inserted into the telescopic sleeve, and the positioning screw is matched with the limiting groove to realize retraction positioning.
In the structure, the limit groove can prevent the metal shaping hose from falling off from the telescopic sleeve when the positioning screw is loosened.
The invention is further set that the quick positioning mechanism comprises a base connected with the inspection bench, a longitudinal slide rail is arranged on the base, a longitudinal slide block is arranged on the longitudinal slide rail, a transverse slide rail is arranged on the longitudinal slide rail, a transverse slide block is arranged on the transverse slide rail, the rotary bracket is connected with the transverse slide block through a connecting plate, and locking screws are arranged on the longitudinal slide block and the transverse slide block.
In the structure, the quick positioning mechanism is used for quickly moving the rotary support to the position above the center of the eyeball so that the axial scanning head is perpendicular to the axis center of the eyeball, and locking the locking screw for positioning, and meanwhile, the quick positioning mechanism can avoid the rotary support and the accessory parts above the rotary support from blocking the movement of a patient when the patient lies down or stands up.
The invention has the beneficial effects that: the device can quickly perform axial scanning, longitudinal scanning and transverse scanning on the eyeball, is accurate in positioning, reduces the fatigue of an operator, can quickly perform picture switching on three scanning modes of the eyeball, is convenient for beginners or trainees to understand various scanning modes, and improves the accuracy of actual operation.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the present invention with a first view angle partially cut away.
Fig. 3 is a schematic view of the second viewing angle structure of the present invention.
Fig. 4 is a schematic structural diagram of a transverse scanning head of the present invention in a first position.
Fig. 5 is a schematic structural diagram of the transverse scanning head of the present invention in a second position.
FIG. 6 is an enlarged view of the portion A of FIG. 4 according to the present invention.
FIG. 7 is an enlarged view of the portion B of FIG. 5 according to the present invention.
FIG. 8 is a schematic view of the contact position between the axial scanning head and the eyeball under the axial scanning state according to the present invention.
Fig. 9 is a schematic view of a contact position between the cross-cutting scanning head and an eyeball in the cross-cutting scanning state according to the present invention.
Fig. 10 is a schematic view of the contact position between the longitudinal scanning head and the eyeball under the longitudinal scanning state according to the present invention.
The reference numbers in the figures mean: 10-a rotating support; 11-positioning pits; 12-positioning the spring plate; 13-a positioning bead; 14-a connecting plate; 15-a bearing; 20-a quick positioning mechanism; 21-a base; 22-longitudinal slide rail; 23-longitudinal slide block; 24-a transverse slide rail; 25-transverse slide block; 26-locking screws; 30-a rotating disc; 31-lifting spring plate; 32-lifting screws; 40-scanning head support; 41-axial scan head; 42-a longitudinal cutting scanning head; 43-transverse cutting scanning head; 44-a telescopic sleeve; 441-set screws; 45-metal shaping hose; 451-a limit groove; 46-a diverter switch; 47-a slide cartridge; 48-a transverse bracket; 481 — signal interface; 49-swivel joint; a-the eyeball; b-marking points; h- (horizontal transverse, horizontal axial); v- (vertical transverse, vertical axis); o- (oblique transverse, oblique axial).
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 10, an ophthalmological B-ultrasonic inspection apparatus shown in fig. 1 to 10 includes a B-ultrasonic machine (not shown in the drawings), and further includes an annular rotary support 10, a fast positioning mechanism 20 connected to an inspection table (not shown in the drawings) is disposed on one side of the rotary support 10, a rotary disk 30 capable of rotating relative to the rotary support 10 is disposed on a rotary surface of an inner wall of the rotary support 10, the rotary disk 30 and the rotary support 10 rotate in a matching manner through a bearing 15, 8 positioning pits 11 are uniformly distributed on an upper end surface of the rotary support 10, and a positioning elastic sheet 12 disposed on the rotary disk 30 and matched with the positioning pits 111 realize rotational positioning of the rotary disk 30; the rotary disk 30 is provided with a scanning head bracket 40 which penetrates through the rotary disk 30 and can slide along the axial direction of the axis of the rotary disk 30; the scanning head support 40 is provided with an axial scanning head 41 which extends downwards and is coaxial with the rotation axis of the rotary disc 30, the scanning head support 40 is also provided with a longitudinal cutting scanning head 42 and a transverse cutting scanning head 43 which are equally arranged at 180 degrees on two sides of the axial scanning head 41, and the axial scanning head 41, the longitudinal cutting scanning head 42 and the transverse cutting scanning head 43 all point to the central point of the eyeball a; an expansion sleeve 44 and a metal shaping hose 45 are arranged between the longitudinal cutting scanning head 42 and the transverse cutting scanning head 43 and the scanning head bracket 40, and the transverse cutting scanning head 43 can rotate 180 degrees along the axis of the transverse cutting scanning head.
In the above structure, by providing the rotatable rotary disk 30 and three groups of scanning heads, the rotary disk 30 is positioned at 12O 'clock, 1O' clock 30, 3O 'clock, 4O' clock 30, 6O 'clock, 7O' clock 30, 9O 'clock, 10O' clock 30 above the eyeball a, so as to realize the scanning head positions required by the cross-cut scanning (horizontal cross-cut H, vertical cross-cut V, and oblique cross-cut O), the longitudinal-cut scanning, and the axial-scan (horizontal axis H, vertical axis V, and oblique axis O), realize fast positioning, precise positioning position, and improve the accuracy of the inspection, the telescopic sleeve 44 is used to adjust the fit clearance between the cross-cut scanning head 43 and the longitudinal-cut scanning head 42 and the eyeball a, and the metal shaped hose 45 is used to finely adjust the positions of the cross-cut scanning head 43 and the longitudinal-cut scanning head 42, and improve the detection effect.
In this embodiment, the upper surface of the rotary disk 30 is provided with an arc-shaped lifting spring 31, one end of the lifting spring 31 is fixed on the rotary disk 30, the middle part of the lifting spring 31 is connected with the scanning head bracket 40, the other end of the lifting spring applies elastic force to the direction opposite to the upper surface of the rotary disk 30 and is provided with a lifting screw 32 which is abutted against the surface of the rotary disk 30, so that the pressure of the axial scanning head 41 on the scanning head bracket 40 acting on the surface of the eyeball a is kept between 20g and 60 g.
In the above structure, when the patient lies on the examination table and moves the rotary support 10 to the top of the eyeball a, the height of the eyeball a on the examination table (not shown) is easy to change due to the size of the head of the patient, so the lifting screw 32 is arranged to support the scanning head support 40, the scanning heads (the axial scanning head 41, the longitudinal cutting scanning head 42 and the transverse cutting scanning head 43) are prevented from contacting the eyeball a when the rotary support 10 is positioned, the lifting screw 32 is released to put down the scanning head support 40 after the position is determined, the scanning heads (the axial scanning head 41, the longitudinal cutting scanning head 42 and the transverse cutting scanning head 43) are convenient to contact the eyeball a, and the scanning head support 40 can be lifted upwards due to the change of the height direction of the head of the patient caused by shaking easily when the head of the patient is slightly lifted, the weight of 20g-60g can ensure good contact between the scanning heads (the axial scanning head 41, the longitudinal cutting scanning head 42 and the transverse cutting scanning head 43) and the eyeball a, and can also avoid the eyeball a from being damaged by discomfort of a patient due to rigid positioning.
In this embodiment, the scan head support 40 is provided with a switch 46 for switching signals of the axial scan head 41, the longitudinal scan head 42, and the transverse scan head 43.
In the above structure, the switch 46 can rapidly switch the images transmitted by the scanning heads (the axial scanning head 41, the longitudinal scanning head 42, and the transverse scanning head 43) to the B-ultrasonic machine (not shown in the figure), which is equivalent to three scanning heads (the axial scanning head 41, the longitudinal scanning head 42, and the transverse scanning head 43) being sequentially connected to the B-ultrasonic machine (not shown in the figure) as required, so as to rapidly observe the images fed back by other scanning modes in the current scanning mode during axial scanning, longitudinal scanning, or transverse scanning.
In this embodiment, the scanning head support 40 includes three sliding cylinders 47 capable of sliding along the axial direction of the rotary disk 30, wherein one sliding cylinder 17 is coaxial with the axis of the rotary disk 30, the other two sliding cylinders 47 are located at two sides of the rotary disk so that the three sliding cylinders are arranged in a straight line, the axial scanning head 41 is located on the sliding cylinder 47 at the middle position, and the longitudinal scanning head 42 and the transverse scanning head 43 are located on the other two sliding cylinders 47.
In the above structure, the slide cylinder 47 can not only realize the lifting of the scanning head bracket 40, but also simplify the structure, reduce the weight, and facilitate the lifting of the spring plate 31 to control the pressing weight.
In this embodiment, a transverse bracket 48 for connecting the three sliding cylinders 47 to form a whole is disposed at the upper end of each sliding cylinder 47, a signal interface 481 is disposed on each transverse bracket 48, and the switch 46 is disposed at the signal interface 481; the lifting spring plate 31 is connected with the sliding cylinder 47 at the middle position.
In the above structure, the signal interface 481 is connected to a B-ultrasonic machine (not shown) via a cable (not shown).
In this embodiment, one end of the telescopic sleeve 44 is connected to the sliding cylinder 47 on the scanning head bracket 40, and the other end is connected to the metal shaping hose 45.
In the above structure, if the metal shaping hose 45 is connected to the slide cylinder 47 and then connected to the telescopic sleeve 44, the load on the metal shaping hose 45 is increased in terms of weight, and therefore, the metal shaping hose 45 having a higher rigidity needs to be selected, but this reduces the adjustment sensitivity of the metal shaping hose 45.
In this embodiment, the longitudinal scanning head 42 is connected to the metal shaping hose 45, and a rotary joint 49 is provided between the transverse scanning head 43 and the metal shaping hose 45.
In the above configuration, when the traverse scanning head 43 performs the horizontal traverse H, the vertical traverse V, and the oblique traverse O, the marking points b at the 1-point 30 position, the 3-point position, the 4-point 30 position, and the 6-point position are opposite to the marking points b at the 7-point 30 position, the 9-point position, the 10-point 30 position, and the 12-point position, and therefore the traverse scanning head 43 is rotated by the rotary joint 49.
In this embodiment, the positioning elastic sheet 12 is provided with a positioning bead 13 matched with the positioning pit 11, the mark point b of the axial scanning head 41 points to a plane position of the positioning bead 13 projected along the axial direction of the rotary disk 30, the mark point b of the longitudinal scanning head 42 faces the axial direction of the rotary disk 30, and the mark point b of the transverse scanning head 43 and the mark point b of the axial scanning head 41 are in the same direction or opposite to each other by rotating the transverse scanning head 43 and the axial scanning head 41.
In the above structure, the mark B can facilitate the matching of the currently detected mode with the frame of the B-ultrasonic machine (not shown in the figure).
In this embodiment, the telescopic sleeve 44 is provided with a positioning screw 441, the outer wall of one end of the metal shaping hose 45 is provided with a limit groove 451 which is formed along the axial direction of the metal shaping hose, the end of the metal shaping hose 45 provided with the limit groove 451 is inserted into the telescopic sleeve 44, and the positioning screw 441 is matched with the limit groove 451 to realize retraction positioning.
In the above structure, the limiting groove 451 can prevent the metal shaped hose 45 from falling off from the telescopic sleeve 44 when the set screw 441 is loosened.
In this embodiment, the quick positioning mechanism 20 includes a base 21 connected to an inspection table (not shown in the figure), a longitudinal slide rail 22 is disposed on the base 21, a slidable longitudinal slide block 23 is disposed on the longitudinal slide rail 22, a transverse slide rail 24 is disposed on the longitudinal slide block 23, a slidable transverse slide block 25 is disposed on the transverse slide rail 24, the rotary support 10 is connected to the transverse slide block 25 through a connecting plate 14, and locking screws 26 are disposed on the longitudinal slide block 23 and the transverse slide block 25.
In the above structure, the fast positioning mechanism 20 is used to fast move the rotary support 10 to the center above the eyeball a to make the axial scanning head 41 perpendicular to the axis center of the eyeball a, and lock the locking screw 26 for positioning, and meanwhile, the fast positioning mechanism 20 can prevent the rotary support 10 and its upper accessory parts from blocking the movement of the patient when the patient lies down or rises.
The invention has the beneficial effects that: the device can quickly perform axial scanning, longitudinal scanning and transverse scanning on the eyeball, is accurate in positioning, reduces the fatigue of an operator, can quickly perform picture switching on three scanning modes of the eyeball, is convenient for beginners or trainees to understand various scanning modes, and improves the accuracy of actual operation.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and those modifications and variations assumed in the above are also considered to be within the protective scope of the present invention.
Claims (9)
1. An ophthalmology B-ultrasonic examination device comprises a B-ultrasonic machine, and is characterized in that: the test bench is characterized by further comprising an annular rotary support, wherein a quick positioning mechanism connected with the test bench is arranged on one side of the rotary support, a rotary disc capable of rotating relative to the rotary support is arranged on the rotary surface of the inner wall of the rotary support, 8 positioning pits are uniformly distributed on the upper end surface of the rotary support, and a positioning elastic sheet is arranged on the rotary disc and matched with the positioning pits to realize rotary positioning; the rotary disk is provided with a scanning head bracket which penetrates through the rotary disk and can slide along the axial direction of the axis of the rotary disk; the scanning head bracket is provided with a shaft position scanning head which extends downwards and is coaxial with the rotary axis of the rotary disc, the scanning head bracket is also provided with a longitudinal cutting scanning head and a transverse cutting scanning head which are equally divided by 180 degrees and are positioned at two sides of the shaft position scanning head, and the shaft position scanning head, the longitudinal cutting scanning head and the transverse cutting scanning head all point to the central point of the eyeball; the transverse cutting scanning head and the transverse cutting scanning head are respectively provided with a telescopic sleeve and a metal shaping hose between the scanning head support and the scanning head support, the transverse cutting scanning head can rotate 180 degrees along the axis of the transverse cutting scanning head, the upper surface of the rotary disk is provided with an arc-shaped lifting elastic sheet, one end of the lifting elastic sheet is fixed on the rotary disk, the middle part of the lifting elastic sheet is connected with the scanning head support, the other end of the lifting elastic sheet applies elasticity to the direction opposite to the upper surface of the rotary disk, and a lifting screw which is propped against the surface of the rotary disk is arranged, so that the pressure of the axial scanning head on the scanning head support on the surface of an eyeball is kept between 0.196.
2. An ophthalmic B-mode ultrasound examination apparatus according to claim 1, wherein: and the scanning head bracket is provided with a change-over switch for switching signals of the axial scanning head, the longitudinal cutting scanning head and the transverse cutting scanning head.
3. An ophthalmic B-mode ultrasound examination apparatus according to claim 2, wherein: the scanning head bracket comprises three sliding barrels which can slide along the axial direction of the rotary disc, one sliding barrel is coaxial with the axis of the rotary disc, the other two sliding barrels are positioned at the two sides of the rotary disc to enable the other two sliding barrels to be arranged in a straight line, the axial scanning head is positioned on the sliding barrel at the middle position, and the longitudinal cutting scanning head and the transverse cutting scanning head are positioned on the other two sliding barrels.
4. An ophthalmic B-mode ultrasound examination apparatus according to claim 3, wherein: the upper end of the sliding barrel is provided with a transverse bracket which is used for connecting the three sliding barrels into a whole, the transverse bracket is provided with a signal interface, and the change-over switch is arranged at the signal interface; the lifting elastic sheet is connected with the sliding cylinder at the middle position.
5. An ophthalmic B-mode ultrasound examination apparatus according to claim 3 or 4, wherein: one end of the telescopic sleeve is connected with the sliding cylinder on the scanning head support, and the other end of the telescopic sleeve is connected with the metal shaping hose.
6. An ophthalmic B-mode ultrasound examination apparatus according to claim 5, wherein: the longitudinal cutting scanning head is connected with the metal shaping hose, and a rotary joint is arranged between the transverse cutting scanning head and the metal shaping hose.
7. An ophthalmic B-mode ultrasound examination apparatus according to claim 6, wherein: the positioning elastic sheet is provided with a positioning bead matched with the positioning pit, the shaft position scanning head mark point points to the plane position of the positioning bead projected along the axis direction of the rotary disc, the longitudinal cutting scanning head mark point faces the axis of the rotary disc, and the transverse cutting scanning head mark point and the shaft position scanning head mark point are in the same direction or opposite to each other through rotation.
8. An ophthalmic B-mode ultrasound examination apparatus according to claim 7, wherein: the telescopic sleeve is provided with a positioning screw, the outer wall of one end of the metal shaping hose is provided with a limiting groove which is formed along the axial direction of the metal shaping hose, one end of the metal shaping hose, which is provided with the limiting groove, is inserted into the telescopic sleeve, and the positioning screw is matched with the limiting groove to realize retraction positioning.
9. An ophthalmic B-mode ultrasound examination apparatus according to claim 8, wherein: the quick positioning mechanism comprises a base connected with the inspection bench, a longitudinal slide rail is arranged on the base, a longitudinal slide block is arranged on the longitudinal slide rail, a transverse slide rail is arranged on the longitudinal slide block, a transverse slide block is arranged on the transverse slide rail, the rotary support is connected with the transverse slide block through a connecting plate, and locking screws are arranged on the longitudinal slide block and the transverse slide block.
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| CN103079475A (en) * | 2010-07-07 | 2013-05-01 | 西江大学校产学协力团 | Method for generating ultrasonic image using concave array |
| CN102599935A (en) * | 2012-03-23 | 2012-07-25 | 中国医学科学院生物医学工程研究所 | Device for accurately positioning and controlling position of acoustic probe in magnetoacoustic coupling imaging |
| CN202920235U (en) * | 2012-10-17 | 2013-05-08 | 吴宗贵 | Experimental animal ultrasonic support device for auxiliary positioning |
| CN104546001A (en) * | 2015-01-08 | 2015-04-29 | 绵阳美科电子设备有限责任公司 | Multi-array ultrasonic probe |
| CN105232089A (en) * | 2015-10-22 | 2016-01-13 | 刘德生 | Ultrasonic probe for otorhinolaryngological department |
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