Syringe-carpule assembly
First Claim
1. A syringe-carpule assembly comprising a housing, first and second carpules arranged inside said housing with said first carpule in front of said second carpule, an outer hollow plunger rod that passes through and is slidable in a rearward end of said housing, a first member connected to said outer hollow plunger rod and disposed outside said housing to the rear of said rearward end of said housing, an inner hollow rod comprising first and second openings disposed at different longitudinal positions, said inner hollow rod being slidably arranged inside said outer hollow plunger rod, and a second member connected to said inner hollow rod and disposed outside said housing to the rear of said rearward end of said housing, wherein said outer hollow plunger rod is slidable between a first extended position whereat said first member is disposed a first distance from said rearward end of said housing and a first retracted position whereat said first member is disposed a second distance from said rearward end of said housing, said second distance being greater than said first distance, and said inner hollow rod is slidable between a second extended position whereat said second member is disposed a third distance from said rearward end of said housing and a second retracted position whereat said second member is disposed a fourth distance from said rearward end of said housing, said fourth distance being greater than said third distance, and further wherein respective portions of said inner hollow rod are disposed inside said first and second carpules when said inner hollow rod is in said first extended position and outside said first and second carpules when said inner hollow rod is in said first retracted position.
1 Assignment
0 Petitions
Accused Products
Abstract
A syringe-carpule assembly comprising first and second carpules, a housing holding the first and second carpules in an end-to-end relationship, an outer hollow plunger rod supported by and slidable relative to the housing, and an inner hollow rod having first and second openings and being slidably arranged inside the outer hollow plunger rod. The inner hollow rod is slidable between first and second positions. The inner hollow rod in the first position has the first opening disposed within the first carpule and the second opening disposed within the second carpule. This allows liquid solvent in the second carpule to flow into the first carpule, which comprises an evacuated chamber containing solid matter that dissolves in the presence of that solvent to form a mixture. The second carpule is then removed and the mixture in the first carpule is injected into the patient.
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Citations
14 Claims
- 1. A syringe-carpule assembly comprising a housing, first and second carpules arranged inside said housing with said first carpule in front of said second carpule, an outer hollow plunger rod that passes through and is slidable in a rearward end of said housing, a first member connected to said outer hollow plunger rod and disposed outside said housing to the rear of said rearward end of said housing, an inner hollow rod comprising first and second openings disposed at different longitudinal positions, said inner hollow rod being slidably arranged inside said outer hollow plunger rod, and a second member connected to said inner hollow rod and disposed outside said housing to the rear of said rearward end of said housing, wherein said outer hollow plunger rod is slidable between a first extended position whereat said first member is disposed a first distance from said rearward end of said housing and a first retracted position whereat said first member is disposed a second distance from said rearward end of said housing, said second distance being greater than said first distance, and said inner hollow rod is slidable between a second extended position whereat said second member is disposed a third distance from said rearward end of said housing and a second retracted position whereat said second member is disposed a fourth distance from said rearward end of said housing, said fourth distance being greater than said third distance, and further wherein respective portions of said inner hollow rod are disposed inside said first and second carpules when said inner hollow rod is in said first extended position and outside said first and second carpules when said inner hollow rod is in said first retracted position.
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9. A method of administering a medicine to a patient using a syringe, comprising the following steps:
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(a) placing a first carpule containing solid matter in a chamber and a second carpule containing liquid solvent in a chamber inside a housing of a syringe in an end-to-end relationship with said first carpule in front of said second carpule, said chamber of said first carpule having an internal pressure less than atmospheric pressure; (b) placing a hollow rod of said syringe so that a first opening thereof is located inside said chamber of said first carpule and a second opening thereof is located inside said chamber of said second carpule, thereby causing liquid solvent to flow through said hollow rod and into said chamber of said first carpule, where said liquid solvent dissolves said solid matter to form a mixture; (c) removing said hollow rod from said chambers of said first and second carpules; (d) attaching a needle to said syringe housing; (e) removing said second carpule from said syringe housing; and (f) forcing at least a portion of said mixture to flow from said chamber of said first carpule into and through said needle. - View Dependent Claims (10, 11, 12, 13, 14)
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Specification