Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
168 words
A two-compartment syringe having freeze-dried powder (a) obtained by freeze-drying a solution of medicine in a syringe (3) inverted with a needle connecting side (2) disposed below and contained in a bottom of said syringe barrel (3), a containing chamber for this freeze-dried powder (a) partitioned by an elastic first gasket (4) inserted into said syringe barrel (3), a solvent (b) for said freeze-dried powder (a) contained between said first gasket (4) and an elastic second gasket (5) inserted into said syringe barrel (3), and a plunger rod (6) attached to said second gasket (5), said two-compartment syringe including coating layers formed on an inner wall of said syringe barrel (3) contacted by the solution of medicine to be freeze-dried, by coating with a silicone oil solution having a concentration not exceeding 0.3% (W/V), and on an inner wall of said syringe barrel (3) substantially out of contact with the solution of medicine, by coating with a silicone oil solution having a concentration of at least 1% (W/V).
Claim 2
Dependent Claim
24 words
A two-compartment syringe as set forth in claim 1, wherein said silicone oil solutions are solutions prepared by dissolving silicone oil in chlorofluorocarbon (flon).
Claim 3
Dependent Claim
39 words
A two-compartment syringe as set forth in claim 1, wherein said needle connecting side 2 of said syringe 3 defines a bore containing a rubber plug 15 perforated by a needle 1 attached to this needle connecting side 2.
Claim 4
Dependent Claim
71 words
A two-compartment syringe as set forth in claim 1, wherein said syringe (3) has a first finger hook (11) disposed at an opening side thereof and projecting diametrically outwardly of the syringe (3), and a second finger hook (12) disposed on an intermediate portion of said syringe barrel (3) displaced from the first finger hook (11) toward said needle connecting side (2) and projecting diametrically outwardly of said syringe barrel (3).
Claim 5
Dependent Claim
30 words
A two-compartment syringe as set forth in claim 3, wherein said two finger hooks (11 and 12) are formed integral with a holder (10) detachably mounted on said syringe (3).
Claim 6
Dependent Claim
57 words
A two-compartment syringe as set forth in claim 1, wherein said syringe (3) has a stopper (14) disposed at an opening side thereof for contacting, in an axial direction of said syringe (3), said plunger rod (6) or said gasket (5) disposed adjacent an opening of said syringe (3) to prevent said gasket (5) from falling off.
Claim 7
Dependent Claim
31 words
A two-compartment syringe as set forth in claim 6, wherein said stopper (14) defines a guide surface (14a) for guiding movement of said plunger rod (6) axially of said syringe (3).
Claim 8
Dependent Claim
230 words
A two-compartment syringe having two gaskets (4 and 5) slidably inserted into a syringe (3) having a needle connecting side 2 formed in one end thereof and unsealed at a time of attaching a needle (1), through an opening formed in the other end of the syringe (3), a medical substance and a solvent contained separately in two chambers (3A and 3B) of the syringe partitioned by said two gaskets (4 and 5), a plunger rod (6) attached to the gasket (5) disposed adjacent the opening of said syringe (3), and an inflow limiting structure for leading the solvent contained in one of the chambers (3B) into the other chamber (3A) only when said plunger rod (6) is pushed in, said two-compartment syringe including a stopper (14) disposed at an opening side of said syringe (3) for contacting, in an axial direction of said syringe (3), the plunger rod (6) or the gasket (5) disposed adjacent an opening of said syringe (3) to prevent said gasket (5) from falling off, and a first finger hook (11) disposed at the opening side of said syringe (3) and projecting diametrically outwardly of the syringe (3), and a second finger hook (12) disposed on an intermediate portion of said syringe barrel (3) displaced from the first finger hook (11) toward said needle connecting side (2) and projecting diametrically outwardly of said syringe (3).
Claim 9
Dependent Claim
31 words
A two-compartment syringe as set forth in claim 8, wherein said stopper (14) defines a guide surface (14a) for guiding movement of the plunger rod (6) axially of the syringe (3).
Claim 10
Dependent Claim
30 words
A two-compartment syringe as set forth in claim 9, wherein said two finger hooks (11 and 12) are formed integral with a holder (10) detachably mounted on said syringe (3).