Implant injection device
First Claim
Patent Images
1. A single use implant injection device, said device comprising:
- an implant housing having proximal and distal ends and an inner wall defining a channel therethrough, said inner wall having a projection thereon at said proximal end of said housing, said projection extending into said channel;
a cannula extending from said distal end of said housing;
a plunger having proximal and distal ends, said plunger being longitudinally movable in said housing and having a projection thereon at said proximal end, said projection on said plunger and said projection on said inner wall being configured so that said plunger can be inserted in said proximal end of said housing but cannot be removed from said proximal end of said housing; and
a cap disposed on said cannula, said cap having an end, said end having an incision edge attached thereto.
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Accused Products
Abstract
An implant injection device for once-only use includes an elongated implant housing (10), a cannula (11) and a plunger (20) which is longitudinally movable in the implant housing. The surface (21) of the plunger and the inner wall (15) of the implant housing are equipped with interacting projections (22, 12) which permit the plunger to move inwards into the implant housing but which prevent the removal of the plunger from the implant housing.
140 Citations
16 Claims
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1. A single use implant injection device, said device comprising:
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an implant housing having proximal and distal ends and an inner wall defining a channel therethrough, said inner wall having a projection thereon at said proximal end of said housing, said projection extending into said channel; a cannula extending from said distal end of said housing; a plunger having proximal and distal ends, said plunger being longitudinally movable in said housing and having a projection thereon at said proximal end, said projection on said plunger and said projection on said inner wall being configured so that said plunger can be inserted in said proximal end of said housing but cannot be removed from said proximal end of said housing; and a cap disposed on said cannula, said cap having an end, said end having an incision edge attached thereto. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A single use implant injection device, said device comprising:
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an implant housing having proximal and distal ends and an inner wall defining a channel therethrough, said inner wall having a projection thereon at said proximal end of said housing, said projection extending into said channel; a cannula extending from said distal end of said housing; a plunger having proximal and distal ends, said plunger being longitudinally movable in said housing and having a projection thereon at said proximal end, said projection on said plunger and said projection on said inner wall being configured so that said plunger can be inserted in said proximal end of said housing but cannot be removed from said proximal end of said housing; and a cap disposed on said cannula, said cap having an end, said end having an incision edge attached thereto, said cap further having a protective portion for covering said incision edge extending therefrom, said protective portion having an end which is at least partially bent around a head of said incision edge and having a groove formed therein, and said groove and said incision edge being provided with means for fixing said protective portion to said incision edge so that said incision edge can be protected in said groove after use.
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Specification