Device and method for detecting pressure of artificial cochleaTechnical Field
The invention belongs to the field of medical instruments, and relates to a device and a method for detecting pressure of an artificial cochlea.
Background
As is well known, inductive coupling technology is widely used in implantable medical devices, and the technology can perform functions such as signal transmission, wireless charging and the like, and in particular, for electronic implantable medical devices, the technology makes the implant no longer need a battery, and completely depends on external components to supply power, so that the service life of the implant can be greatly prolonged.
In the practical application process, the thickness difference of the skin flaps of medical instrument users is very large along with the age, the weight and the sex, so that the magnetic attraction between the transmission coil of the external machine of the artificial cochlea and the receiving coil of the implant is difficult to control, if the magnetic attraction is small, the transmission coil is easy to fall off, and if the magnetic attraction is large, the pressed skin is easy to be red, inflamed and even fester.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a cochlear implant pressure detection apparatus, which comprises a body and an air bag, wherein,
The machine body is connected with the air bag through a guide pipe, the machine body comprises an upper shell, a key, a guide pipe connector, a screw joint, a display screen, a battery, a waterproof ring, an air duct, an air pressure sensor and a lower shell, the key and the display screen are exposed out of the upper shell, the guide pipe connector, the screw joint, the battery, the waterproof ring, the air duct and the air pressure sensor are arranged in a space formed by closing or buckling the upper shell and the lower shell, the guide pipe connector, the screw joint, the air duct and the air pressure sensor are sequentially connected, the waterproof ring is sleeved between the air duct and the screw joint, and the guide pipe is connected with the guide pipe connector;
the air bag is connected with the catheter through a sealing joint, the air bag comprises an upper bag clothes and a lower bag clothes, the upper bag clothes and the lower bag clothes are round, the diameter of the upper bag clothes and the lower bag clothes is not smaller than the diameter of a transmission coil of an external machine of the artificial cochlea, and the upper bag clothes and the lower bag clothes are connected through a plurality of non-closed concentric rings to form a ventilation cavity.
Preferably, the upper and lower jackets are connected by an adhesive.
Preferably, the upper and lower jackets are ultrasonically welded.
Preferably, the upper and lower jackets are welded by high frequency.
Preferably, the upper and lower jackets are welded by UV light.
Preferably, the sealing joint is a pagoda type.
Based on the above purpose, the invention also provides a method for detecting the pressure of the artificial cochlea, which adopts the device for detecting the pressure of the artificial cochlea and comprises the following steps:
s10, in the use of the artificial cochlea system, an air bag is placed under an external machine transmission coil of the artificial cochlea, and a machine body is opened;
S20, the body inflates the air bag with a first-stage pressure through a guide pipe;
S30, detecting the extrusion degree of the gas in the air bag by the air pressure sensor, and displaying the extrusion degree on a display screen;
S40, if the transmission coil of the outer machine of the artificial cochlea is not separated, the machine body inflates the air bag with the secondary pressure through the guide pipe;
S50, detecting the extrusion degree of the gas in the air bag by the air pressure sensor, and displaying the extrusion degree on a display screen;
s60, if the transmission coil of the external machine of the artificial cochlea does not fall off or the extrusion degree detected by the air pressure sensor exceeds a threshold value, the pressure exceeds the standard, and the magnetic force intensity in the artificial cochlea needs to be reduced.
Preferably, the primary pressure is 1.3-1.5atm.
Preferably, the secondary pressure is 1.5-1.7atm.
Preferably, the thickness of the inflated air bag is 1mm-2mm.
Compared with the prior art, the invention has the advantages that the air bag is arranged in a concentric ring shape, is consistent with the shape of the transmission coil of the external machine of the artificial cochlea, well detects the pressure of the transmission coil on the skin, does not need a piezoresistor or an inductive coupling circuit to sense the pressure or the distance between the transmission coil and the receiving coil, can accurately detect the pressure only through the air pressure sensor, is easy to realize in structure, has low cost and convenient use, and does not need to modify the existing artificial cochlea system.
Drawings
Fig. 1 is a schematic diagram of a cochlear implant pressure detection apparatus according to an embodiment of the present invention;
Fig. 2 is an exploded view of a cochlear implant pressure sensing apparatus according to an embodiment of the present invention;
Fig. 3 is an enlarged view of an air bag of the cochlear implant pressure detection apparatus according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of an air bag of a cochlear implant pressure sensing apparatus according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
On the contrary, the invention is intended to cover any alternatives, modifications, equivalents, and variations as may be included within the spirit and scope of the invention as defined by the appended claims. Further, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. The present invention will be fully understood by those skilled in the art without the details described herein.
Device embodiment
Referring to fig. 1-4, there is shown a cochlear implant pressure sensing apparatus of the present invention, comprising a body and an air bag 30, wherein,
The machine body is connected with the air bag 30 through the guide pipe 7, the machine body comprises an upper shell 16, a key 18, a guide pipe joint 8, a screw joint 9, a display screen 10, a battery 11, a waterproof ring 12, an air duct 14, an air pressure sensor 15 and a lower shell 13, the key 18 and the display screen 10 are exposed out of the upper shell 16, the guide pipe joint 8, the screw joint 9, the battery 11, the waterproof ring 12, the air duct 14 and the air pressure sensor 15 are arranged in a space formed by covering or buckling the upper shell 16 and the lower shell 13, the guide pipe joint 8, the screw joint 9, the air duct 14 and the air pressure sensor 15 are sequentially connected, the waterproof ring 12 is sleeved between the air duct 14 and the screw joint 9, and the guide pipe 7 is connected with the guide pipe joint 8;
The air bag 30 is connected with the catheter 7 through the sealing joint 6, the air bag 30 comprises an upper bag cover 31 and a lower bag cover 32, the upper bag cover 31 and the lower bag cover 32 are all round, the diameter is not smaller than the diameter of the transmission coil 2 of the external machine of the artificial cochlea, and the upper bag cover 31 and the lower bag cover 32 are connected through a plurality of non-closed concentric rings to form a ventilation cavity 33.
In the specific embodiment
During pressure detection, the air bag 30 is positioned below the artificial cochlea external machine transmission coil 2, between the artificial cochlea external machine transmission coil 2 and the implant receiving coil 1, and on the skin 17. The key 18 adjusts the air pressure output to the air bag 30 through the guide pipe 7, and can increase, decrease, reset, pause and count, and the device can detect for multiple times to improve the accuracy because the accuracy of the pressure or the detection of the pressure is not required to be very high, so that the data support is better provided for the subsequent adjustment of the magnet attraction force in the transmission coil 2. The upper bag cover 31 and the lower bag cover 32 are made of silica gel or PVC, and the upper bag cover 31 and the lower bag cover 32 are connected through an adhesive or welded by ultrasonic waves or welded by high frequency waves or welded by UV light. The better connection and fixation effects can be achieved.
The sealing joint 6 is a pagoda type and is connected with the conduit 7 to prevent air leakage.
Based on the above purpose, the invention also provides a method for detecting the pressure of the artificial cochlea, which adopts the device for detecting the pressure of the artificial cochlea and comprises the following steps:
s10, in the use of the artificial cochlea system, placing the air bag 30 under the transmission coil 2 of the external machine of the artificial cochlea, and opening the machine body;
s20, the body inflates the air bag 30 with a first-stage pressure through the guide pipe 7;
s30, the air pressure sensor 15 detects the extrusion degree of the air in the air bag 30 and displays the extrusion degree on the display screen 10;
s40, if the transmission coil 2 of the outer machine of the artificial cochlea is not detached, the machine body inflates the air bag 30 with the secondary pressure through the guide pipe 7;
S50, the air pressure sensor 15 detects the extrusion degree of the air in the air bag 30 and displays the extrusion degree on the display screen 10;
S60, if the transmission coil 2 of the outer machine of the artificial cochlea does not fall off or the extrusion degree detected by the air pressure sensor 15 exceeds a threshold value, the pressure exceeds the standard, and the magnetic force intensity in the artificial cochlea needs to be reduced.
The primary pressure is 1.3-1.5atm. Under this pressure, if the pressure detected by the air pressure sensor 15 is greater than 5N or the pressure is greater than 0.4N/cm2 (the air pressure sensor 15 can switch the pressure through a circuit after detecting the air pressure), the magnet attraction in the transmission coil 2 is too large, and the smaller magnet needs to be replaced.
The secondary pressure is 1.5-1.7atm. Under this pressure, if the pressure detected by the air pressure sensor 15 is greater than 3N or the pressure is greater than 0.3N/cm2, the attraction force of the magnet in the transmission coil 2 is excessive, and a smaller magnet needs to be replaced.
The thickness of the inflated airbag 30 is 1mm-2mm. If the air is inflated to 2mm, the transmission coil 2 is not detached, which indicates that the attraction force of the magnet in the transmission coil 2 is too large, and at least two magnets with smaller numbers need to be replaced.
According to the invention, an additional circuit is not required to be designed in the cochlear implant system, the pressure detection of the transmission coil 2 on the skin of a human body during use is not required to be accurate, and only the pressure or the pressure is required to be in a threshold value, so that the pressure or the pressure detection can be realized by designing the air bag 30 with a smart structure and combining the air pressure sensor 15 with related circuits, the display screen 10, the keys 18 and the like.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.