| 摘要 |
A drug delivery means comprising a holding reservoir (11), a pumping means (16), a delivery reservoir (23) and outlet (25), said holding reservoir (11) being connected to the delivery reservoir (23) through the pump (16) where the pump (16) is operable manually to effect transfer of fluid from the holding reservoir (11) to the delivery reservoir (23), the delivery reservoir (23) being connected to the outlet (25) through a flow restriction means (27) which controls the flow to the outlet (25), the delivery reservoir being formed to be resiliently expandable to a maximum volume and wherein the connection between the holding reservoir (11) and delivery reservoir (23) prevents pressurisation of the delivery reservoir (23) substantially beyond a predetermined pressure which will be achieved on the delivery reservoir (23) obtaining its maximum volume, a control means (30) provided with the delivery reservoir to prevent further pressurisation of the delivery reservoir (23) substantially beyond the predetermined pressure, said delivery reservoir (23) being accommodated within the holding reservoir (11).
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