Breech loaded fixed needle syringe and automatic injection device having the same
First Claim
Patent Images
1. A fixed needle syringe comprising:
- a medicine compartment;
a hypodermic needle in fluid communication with said medicine compartment, said hypodermic needle being permanently fixed to said medicine compartment;
a piston slideably disposed in said medicine compartment; and
a plunger secured to said piston, said plunger having a bore defined therethrough, said bore allowing access to said piston through said plunger and said piston being made of a self-sealing, pierceable material.
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Accused Products
Abstract
A fixed needle syringe having a medicine compartment, a hypodermic needle, a piston, and a plunger is provided. The hypodermic needle is in fluid communication with the medicine compartment. The piston is slideably disposed in the medicine compartment. The plunger is secured to the piston. The plunger has a bore defined therethrough, where the bore allows access to the piston through the plunger.
153 Citations
26 Claims
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1. A fixed needle syringe comprising:
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a medicine compartment;
a hypodermic needle in fluid communication with said medicine compartment, said hypodermic needle being permanently fixed to said medicine compartment;
a piston slideably disposed in said medicine compartment; and
a plunger secured to said piston, said plunger having a bore defined therethrough, said bore allowing access to said piston through said plunger and said piston being made of a self-sealing, pierceable material. - View Dependent Claims (2, 3, 4, 5)
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6. (canceled)
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7. A fixed needle syringe comprising:
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a medicine compartment;
a self sealing piston slideably disposed in said medicine compartment;
a hypodermic needle in fluid communication with and permanently fixed to said medicine compartment, said hypodermic needle having a slenderness ratio of between about 60 and 120; and
a plunger secured to said self sealing piston, said plunger having a bore therethrough, said bore allowing access to said self sealing piston through said plunger. - View Dependent Claims (8, 9)
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10. A fixed needle syringe comprising:
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a medicine compartment;
a self sealing piston slideably disposed in said medicine compartment;
a hypodermic needle in fluid communication with and permanently fixed to said medicine compartment, said hypodermic needle having a flow ratio of less than about 2; and
a plunger secured to said self sealing piston, said plunger having a bore defined therethrough, said bore allowing access to said self sealing piston through said plunger. - View Dependent Claims (11, 12, 13)
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14. A method of injecting a medicine, comprising:
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introducing a medicine supply needle into a medicine compartment of a permanently fixed needle syringe through a hollow plunger and a self-sealing, pierceable piston of said fixed needle syringe; and
urging medicine from said medicine supply needle into said medicine compartment. - View Dependent Claims (15, 16, 17, 18)
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19. An injection kit comprising:
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a breech loadable fixed needle syringe having a hypodermic needle permanently fixed to a medicine compartment, a self-sealing, pierceable piston slideably disposed in said medicine compartment, and a hollow plunger removably secured to said piston so that said medicine compartment is fillable through said hollow plunger and said piston;
an injection assembly; and
a retraction assembly, said injection and retraction assemblies being configured to operatively secure said syringe therein. - View Dependent Claims (20, 21, 22)
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23. A method of injecting a medicine, comprising:
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urging medicine into a medicine supply needle into a medicine compartment of a permanently fixed needle syringe through a hollow plunger and a self-sealing, pierceable piston in said fixed needle syringe;
withdrawing said medicine supply needle from said permanently fixed needle syringe;
turning said permanently fixed needle syringe so that air in said medicine compartment is proximate a hypodermic needle of said permanently fixed needle syringe; and
depressing said hollow plunger to expel said air through said hypodermic needle. - View Dependent Claims (24, 25, 26)
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Specification