Patient-fillable and non-invasive hypodermic injection device assembly
First Claim
1. A hypodermic syringe comprising:
- an ampule body having a plunger end and an orifice end, said body having a generally elongate cylindrical form with an outer wall of predetermined diameter and an inner wall defining a medication retaining cavity, a flange which is a continuation of said inner wall which is located at said orifice end and extends axially outward therefrom, said flange having an outer wall which is located intermediate said body inner wall and said body outer wall;
an elongate plunger, one end thereof having a seal-carrying groove formed about the periphery thereof and being received in said medication retaining cavity with a seal received in said groove;
an orifice-bearing end cap fixed to said orifice end, said end cap having a generally cylindrical form including a medication-receiving portion extending axially into said medication retaining cavity at one end thereof, said end cap having a groove extending about said medication-receiving portion at the base thereof, said groove being conformal with said flange on said body;
a truncated hypodermic needle received in said end cap and having a channel extending therethrough, said channel communicating with the narrower end of said bore;
a filling needle having connecting means thereon; and
a removable external fill adaptor having a receptacle on one end thereof for receiving said end cap therein and a bore extending therethrough, said bore being aligned with said truncated hypodermic needle on said end cap, means on the other end of said adaptor cooperating with said connecting means for securing said filling needle to said adaptor.
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Accused Products
Abstract
The assembly includes an injection device which includes a housing having an ampule-receiving chamber, a gas charge, and means for delivering a predetermined amount of gas to the ampule-receiving chamber. The device includes an injection-counting ring which is received in a groove extending about the housing wherein the ring includes a counting mechanism thereon and is constructed to allow one-way only rotation thereof relative to the housing. The patient-fillable ampule of the invention includes an ampule body having a plunger end and an orifice end, a medication retaining cavity and an elongate plunger which is received in one end of the cavity. An orifice-bearing end cap is fixed to the orifice end of the body. A truncated hypodermic needle is received in the end cap. A removable needle is provided for filling the ampule and allows use of the ampule as a conventional syringe. The ampule is attached to the hypodermic device by means of an ampule sleeve which extends about the ampule body along the length thereof and which cooperates with a retainer collar located on the device.
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Citations
15 Claims
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1. A hypodermic syringe comprising:
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an ampule body having a plunger end and an orifice end, said body having a generally elongate cylindrical form with an outer wall of predetermined diameter and an inner wall defining a medication retaining cavity, a flange which is a continuation of said inner wall which is located at said orifice end and extends axially outward therefrom, said flange having an outer wall which is located intermediate said body inner wall and said body outer wall; an elongate plunger, one end thereof having a seal-carrying groove formed about the periphery thereof and being received in said medication retaining cavity with a seal received in said groove; an orifice-bearing end cap fixed to said orifice end, said end cap having a generally cylindrical form including a medication-receiving portion extending axially into said medication retaining cavity at one end thereof, said end cap having a groove extending about said medication-receiving portion at the base thereof, said groove being conformal with said flange on said body; a truncated hypodermic needle received in said end cap and having a channel extending therethrough, said channel communicating with the narrower end of said bore; a filling needle having connecting means thereon; and a removable external fill adaptor having a receptacle on one end thereof for receiving said end cap therein and a bore extending therethrough, said bore being aligned with said truncated hypodermic needle on said end cap, means on the other end of said adaptor cooperating with said connecting means for securing said filling needle to said adaptor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A patient-fillable ampule and a non-invasive hypodermic injection device assembly comprising:
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an injection device including a housing having an ampule-receiving chamber, a gas charge, and means for delivering a predetermined amount of gas to said ampule-receiving chamber; and a patient-fillable ampule therefore comprising; an ampule body having a plunger end and an orifice end, said body having a generally elongate cylindrical form with an outer wall of predetermined diameter and an inner wall defining a medication retaining cavity, a flange which is a continuation of said inner wall which is located at said orifice end and extends axially outward therefrom, said flange having an outer wall which is located intermediate said body inner wall and said body outer wall; an elongate plunger, one end thereof having a seal-carrying groove formed about the periphery thereof and being received in said medication retaining cavity with a seal received in said groove and the other end thereof formed into a broadened head; an orifice-bearing end cap fixed to said orifice end, said end cap having a generally cylindrical form of substantially the same outside diameter as said outer wall predetermined, larger diameter along a first length thereof and a stepped-down, smaller diameter along a second length thereof, said end cap including a medication-receiving portion extending axially from the larger diameter end thereof into said medication retaining cavity, said medication receiving portion having a truncated conical bore therein with the wider end of said bore located in said medication retaining cavity, said end cap having a groove extending about said medication receiving portion at the base of said medication receiving portion, said groove being conformal with said flange on said body; a truncated hypodermic needle received in said end cap at the smaller diameter end thereof and having a channel extending therethrough, said channel communicating with the narrower end of said bore; and attachment means including an elongate ampule sleeve for attaching said ampule to said device which extends about said ampule body along the length thereof, one end of said sleeve being located adjacent said plunger end of said body, the other end of said sleeve being located adjacent said orifice end and being constructed and arranged to grasp said end cap about said stepped-down diameter. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification