Compact implantable biosensor assembly and biological information monitoring device
The invention discloses a compact implantable biosensor assembly and a biological information monitoring device containing the assembly. The lower part of the implanted sensing section and of the needled for implantation are sealed in a closed space formed by the barrier, the lower part of the enclosure and the lower part of the needle aid. The horizontal connection section of the implantable sensing electrode is embedded in the enclosure. The export electrode is used to connect with a transmitter. The implantable biosensor assembly is directly connected with the circuit board of the transmitter through the export electrode, whereby the structure is compact.
1 . A compact implantable biosensor assembly, comprising:
an enclosure ( 1 ) comprising an upper housing ( 11 ) for engaging with a transmitter ( 10 ) and a lower housing ( 12 ); wherein the lower housing ( 12 ) covers a lower part of the upper housing ( 11 ), away from the transmitter ( 10 );
an implantable sensing electrode ( 3 ) comprising, sequentially in a direction away from the transmitter ( 10 ), a first section ( 31 ), a connection section ( 32 ), and an implanted sensing section ( 33 ), wherein the connection section ( 32 ) is connected between the first section ( 31 ) and the implanted sensing section ( 33 ), and a surface of the first section ( 31 ) is provided with a plurality of export electrodes ( 311 ) configured to electrically connect to the transmitter ( 10 );
a needle aid ( 4 ) comprising a needle seat ( 40 ) and an implantation needle ( 43 ); and
a barrier ( 6 );
wherein:
the upper housing ( 11 ) is provided with a needle aid guide hole ( 118 ) and an electrode guide slot ( 119 ) in communication with each other in the lower part of the upper housing ( 11 ), and an assembly structure ( 110 ) for engaging with the transmitter ( 10 );
the implantation needle ( 43 ) passes through the needle aid guide hole ( 118 );
the electrode guide slot ( 119 ) is disposed above the lower housing ( 12 );
the implanted sensing section ( 33 ) extends from the needle aid guide hole ( 118 ), passes through a junction between the lower housing ( 12 ) and the upper housing ( 11 ), and enters a space between the lower housing ( 12 ) and the upper housing ( 11 );
the first section ( 31 ) passes through the electrode guide slot ( 119 ) and extends upward away from the lower housing ( 12 );
the connection section ( 32 ) extends from the electrode guide slot ( 119 ) to the needle aid guide hole ( 118 ), and the implantable sensing electrode ( 3 ) is sealed at the junction between the lower housing ( 12 ) and the upper housing ( 11 );
the needle aid guide hole ( 118 ) comprises three stepped portions, including an upper step located in an upper part of the upper housing ( 11 ) proximate to the transmitter ( 10 ), a middle step, and a lower step located in the lower part of the upper housing ( 11 );
the upper step and the middle step each comprise a circular hole;
a step surface of the circular hole of the middle step is provided with a first seal ring ( 031 );
a bottom of the lower step is configured as a notched arched hole ( 1183 );
the needle seat ( 40 ) comprises, sequentially in a direction towards the transmitter ( 10 ): an arched section ( 401 ) corresponding to the notched arched hole ( 1183 ); a seal ring-adapted part ( 402 ), above the arched section ( 401 ), sleeved inside the first seal ring ( 031 ); a guide part ( 403 ), above the seal ring-adapted part ( 402 ), clearance-fitting with the circular hole of the upper step; and an upper boss ( 405 ), above the guide part ( 403 ), with a bottom surface of the upper boss ( 405 ) resting on a top surface of the upper step; and
the barrier ( 6 ) is sealed with a lower part of the lower housing ( 12 ) to form a closed space to receive the implanted sensing section ( 33 ) and the implantation needle ( 43 ).
2 . The compact implantable biosensor assembly of claim 1 , wherein the connection section ( 32 ) comprises a first flat section ( 321 ) extending in a direction from first section ( 31 ) to the implanted sensing section ( 33 ), and a bending connection section ( 322 ) bending from an end of the first flat section ( 321 ) and extending upward away from the lower housing ( 12 ), wherein the bending connection section ( 322 ) is connected between the first flat section ( 321 ) and the implanted sensing section ( 33 ).
3 . The compact implantable biosensor assembly of claim 2 , wherein:
a bump ( 331 ) is provided at an upper end of the implanted sensing section ( 33 ), proximate to the upper housing, and contacts with the implantation needle ( 43 ).
4 . The compact implantable biosensor assembly of claim 3 , wherein a cross-sectional shape of a puncture portion of the implantation needle ( 43 ) is C-shaped;
and wherein after assembly, the implanted sensing section ( 33 ) is contained inside the C-shape.
5 . The compact implantable biosensor assembly of claim 1 , wherein,
the transmitter ( 10 ) comprises a connector ( 01 ),
a lower part of the electrode guide slot ( 119 ) proximate to the lower housing, has a width of 0.1 mm to 0.3 mm greater than a thickness of the first section ( 31 ), and is sealed to a lower part of the first section ( 31 ) proximate to the lower housing; and
the lower part of the first section ( 31 ) is provided with a through-hole structure or a toothed edge structure.
6 . The compact implantable biosensor assembly of claim 1 , wherein:
the lower part of the upper housing ( 11 ) is provided with a recessed edge ( 111 );
a portion of the recessed edge ( 111 ) is further recessed with a glue-dispensing sub-slot ( 1111 ), an upper part of the lower housing ( 12 ) proximate to the upper housing is provided with a protruding edge ( 121 ) having two adjacent engagement protuberances ( 1211 ) inserted into the glue-dispensing sub-slot ( 1111 ), the protruding edge ( 121 ) is fitted into the recessed edge ( 111 ), with a sealing glue provided in the recessed edge ( 111 ) and the glue-dispensing sub-slot ( 1111 );
a portion of the implantable sensing electrode ( 3 ) passes between the two engagement protuberances ( 1211 ), the portion of the implantable sensing electrode ( 3 ) is sealed at the junction between the lower housing ( 12 ) and the upper housing ( 11 ), and
the lower housing ( 12 ) and the upper housing ( 11 ) are sealed together.
7 . The compact implantable biosensor assembly of claim 1 , wherein the export electrodes ( 311 ) are exposed on a surface of the enclosure ( 1 ) for connection with the transmitter ( 10 ).
8 . A biological information monitoring device, comprising:
a transmitter ( 10 ) having an assembly through-hole ( 102 ) and a main control circuit board ( 101 ) with an electrode through-hole ( 1011 ); and
the compact implantable biosensor assembly of claim 1 ;
wherein:
the compact implantable biosensor assembly is detachably inserted through and engaged with the assembly through-hole ( 102 );
an upper part of the first section ( 31 ) proximate to the transmitter passes through the electrode through-hole ( 1011 ); and
a signal input/output terminal of the main control circuit board ( 101 ) is electrically connected to the plurality of export electrodes ( 311 ).
9 . The biological information monitoring device of claim 8 , further comprising at least two connecting sheets ( 02 ), each having one end connected to the main control circuit board ( 101 ) and an opposite end pressed against a surface of the export electrodes ( 311 ).
10 . The biological information monitoring device of claim 8 , wherein the enclosure ( 1 ) further comprises a spring pin ( 15 ) inserted into a power switch hole ( 103 ) of the transmitter ( 10 ) when the biosensor assembly is engaged with the assembly through-hole ( 102 ).
11 . The biological information monitoring device of claim 10 , wherein:
an inner wall of the power switch hole ( 103 ) comprises a conductive material divided into a first semicircle and a second semicircle that are electrically disconnected in an initial state; and
wherein insertion of the spring pin ( 15 ) into the power switch hole ( 103 ) causes the spring pin ( 15 ) to be compressed and to electrically connect the first semicircle and the second semicircle.
12 . The biological information monitoring device of claim 8 , wherein:
the plurality of export electrodes ( 311 ) comprises three or more export electrodes disposed on one or both sides of the first section ( 31 );
the implanted sensing section ( 33 ) comprises a working electrode, a reference electrode, and a counter electrode; and
each of the working electrode, reference electrode, and counter electrode is connected to a respective one of the export electrodes ( 311 ) via traces of the implantable sensing electrode ( 3 ).