Highly reliable implantable device of implantable biological sensor
The present invention discloses a highly reliable implantable device of an implantable biological sensor. Before use, the fixed seat cannot move relative to the slidable seat, achieving reliable transportation. In use, the lower end face of the slidable seat is pressed against the skin; the lower end face of the first snap-fit protrusion squeezes the upper end face of the vertical snap-fit plate; the first snap-fit protrusion is gradually away from the support of the vertical snap-fit plate, whereby the inside vertical face of the vertical snap-fit plate pushes the first snap-fit protrusion inward, and the fixed seat moves downward relative to the slidable seat, achieving good controllability.
1 . An implantable device for an implantable biological transmitter ( 10 ), comprising: a slidable seat ( 6 ) and a fixed seat ( 7 ); wherein,
the slidable seat having a partition plate ( 61 ) separating the slidable seat into a fixed seat accommodating cavity ( 62 ) and an upper portion, with a fixed seat extension slot ( 614 ) and at least two first grooves ( 611 ) penetrating the slidable seat having the partition plate ( 61 ), and the slidable seat further comprising a vertical snap-fit plate ( 613 ) extending from the partition plate ( 61 ) into the upper portion and disposed on an outer side of the first grooves;
the fixed seat ( 7 ) is slidably engaged with the slidable seat ( 6 ), the fixed seat ( 7 ) comprising: an isolating wall ( 71 ) received in the fixed seat accommodating cavity ( 62 ) and configured to snap-fit with the implantable biological transmitter ( 10 ) at a lower circumference thereof away from the partition plate ( 61 ); at least two cantilever hook beams ( 711 ) extending from the isolating wall ( 71 ) and each of the cantilever hook beams ( 711 ) extending through a respective one of the first grooves ( 611 ), each of the cantilever hook beams having a first snap-fit protrusion ( 7111 ) at an upper end of the cantilever hook beam away from the isolating wall ( 71 ); and a support frame ( 712 ) extends from the isolating wall ( 71 ) through the fixed seat extension slot ( 614 ) and slidably engaged with the slidable seat ( 6 );
the implantable device further comprises a needle drive ( 4 ) received in the support frame ( 712 ) and a compression spring ( 5 ) disposed between the isolating wall ( 71 ) and the needle drive ( 4 ), the needle drive ( 4 ) comprising an inner jaw ( 41 ) for snap-fit with a needle aid ( 11 ) associated with the implantable biological transmitter ( 10 ),
the fixed seat ( 7 ) further comprises a snap-fit column ( 713 ) extending from the isolating wall ( 71 ) on an inner side of the support frame ( 712 ) and disposed in the compression spring ( 5 );
wherein, in a pre-use state:
the fixed seat ( 7 ) is locked relative to the slidable seat ( 6 ) by (i) the isolating wall ( 71 ) abutting against the partition plate ( 61 ), and (ii) each first snap-fit protrusion ( 7111 ) snap-fitting with an upper end of a corresponding snap-fit plate ( 613 ); and
wherein, in a triggered state:
a downward force is transmitted to the fixed seat ( 7 ), causing the first snap-fit protrusions ( 7111 ) to disengage from the snap-fit plates ( 613 ) and driving the fixed seat ( 7 ) to slide towards the implantable biological transmitter ( 10 ), thereby driving the implantable biological transmitter ( 10 ) to implant into a user's tissue; and
the fixed seat ( 7 ) moves until the needle drive ( 4 ) gets released from the snap-fit with the needle aid ( 11 ) of the implantable biological transmitter ( 10 ), allowing the compression spring ( 5 ) to expand and drive the needle drive ( 4 ) to retract.
2 . The implantable device of claim 1 , wherein each first snap-fit protrusion ( 7111 ) and the corresponding snap-fit plate ( 613 ) is snap-fit in such a way that a lower straight plane of the first snap-fit protrusion ( 7111 ) facing the isolating wall ( 71 ) is pressed on an upper straight plane of the snap-fit plate ( 613 ) opposite to the partition plate ( 61 ), and wherein 30% to 90% of the first snap-fit protrusion in an extension length direction is in snap-fit engagement with the snap-fit plate ( 613 ).
3 . The implantable device of claim 1 , wherein the support frame ( 712 ) comprises a first snap-fit strip ( 7121 ) on an outer side of the support frame away from the needle drive ( 4 ), the slidable seat ( 6 ) comprises a snap-fit frame ( 612 ) having a first snap-fit slot ( 6121 ) on an inner side of the snap-fit frame adjacent to the support frame ( 712 ), and the first snap-fit strip ( 7121 ) is slidably received within the first snap-fit slot ( 6121 ).
4 . The implantable device of claim 3 , wherein the implantable device further comprising a main housing ( 3 ) for receiving the slidable seat ( 6 ) and the fixed seat ( 7 ), with a second snap-fit slot ( 31 ) and a snap-fit plate ( 32 ) formed inside the main housing ( 3 ), the snap-fit plate ( 32 ) having a snap-fit groove ( 325 ), wherein the support frame ( 712 ) comprises a snap-fit block ( 7125 ) on the outer side of the support frame away from the needle drive ( 4 ), and wherein an upper portion of the first snap-fit strip ( 7121 ) is engaged with the second snap-fit slot ( 31 ) and the snap-fit block ( 7125 ) is engaged within the snap-fit groove ( 325 ).
5 . The implantable device of claim 4 , wherein the support frame ( 712 ) further comprises a cantilever pressure contact beam ( 7122 ) between the snap-fit frame ( 612 ) and the needle drive ( 4 ), the cantilever pressure contact beam ( 7122 ) having an inward-facing pressure contact ( 71221 ) at an upper end away from the isolating wall ( 71 ); and the snap-fit frame ( 612 ) is further provided with a pressure contact plate ( 6122 ) extending inward to the cantilever pressure contact beam ( 7122 );
wherein, in the pre-use state, the pressure contact plate ( 6122 ) restrains an outward deformation of the cantilever pressure contact beam ( 7122 ), and the pressure contact ( 71221 ) engages a beveled surface on the needle drive ( 4 ).
6 . The implantable device of claim 5 , further comprising a main device protective jacket ( 16 ) snap-fitting with an end of the main housing ( 3 ) to form a space, and the slidable seat ( 6 ) and the fixed seat ( 7 ) are located in the space.
7 . The implantable device of claim 6 , further comprising an anti-trigger sleeve ( 14 ) removably snap-fit between the main housing ( 3 ) and the main device protective jacket ( 16 ) to prevent a relative movement therebetween the main housing ( 3 ) and the main device protective jacket ( 16 ) in the pre-use state.
8 . The implantable device of claim 7 , wherein:
the main device protective jacket ( 16 ) comprises an assembly snap-fit seat ( 161 ) at a bottom of the main device protective jacket away from the main housing ( 3 ), configured to releasably hold a sensing electrode assembly ( 02 ) comprising an implantable sensing electrode ( 022 ).
9 . The implantable device of claim 8 , wherein the needle aid ( 11 ) comprises a needle seat ( 112 ) having a snap-fit groove, and the inner jaw ( 41 ) snap-fits into the snap-fit groove.