Patent application number | Description | Published |
20080234635 | Disposable syringe guarded in a preuse position (II) - A disposable syringe includes a barrel, a needle assembly, a plunger, a press-fitting unit, and a spacer. The plunger is movable in the barrel to a retraction initiating position, where a front open plunger end is coupled with the needle assembly for withdrawal of the needle assembly into the plunger. An endcap is disposed to cover a rear open plunger end of the plunger. The press-fitting unit is disposed between the plunger and an inner barrel surface of the barrel to permit press-fit engagement between the plunger and the barrel immediately after the plunger is moved to the retraction initiating position. The spacer includes front and rear abutment surfaces detachably engaged with the barrel and the endcap in a preuse position. | 09-25-2008 |
20080234636 | Disposable syringe guarded in a preuse position (1) - A disposable syringe includes a barrel, a needle assembly, a plunger, and a spacer. A tubular catch extends rearwardly of the barrel to terminate at a peripheral edge. The needle assembly includes a needle cannula and a needle seat for securing the needle cannula. The plunger is movable in the barrel to a retraction initiating position, where a front open plunger end is coupled with the needle seat for withdrawal of the needle seat and the needle cannula into the plunger. An endcap is disposed to cover a rear open plunger end, and has a ring wall fittable in the catch. The spacer has front and rear abutment surfaces that detachably and respectively abut against the peripheral edge and a rim of the ring wall in a pre-use position to thereby prevent movement of the plunger to the retraction initiating position. | 09-25-2008 |
20080287876 | Intravenous catheter introducing device - An intravenous catheter introducing device includes a barrel, a tubular grip member disposed to hold a tubular member and a needle seat to permit a tip end of a needle cannula to extend forwardly of the barrel, a tubular plunger movable along a passage of the barrel, and a tubular receptacle retained in the plunger. Forward movement of the plunger permits engagement of a socket end of the receptacle with the rear plug portion of the tubular member and release of the grip member from the barrel such that the needle cannula can be retracted into the plunger. The tubular member has a pre-chamber so that flashback blood flowing thereinto is visible. | 11-20-2008 |
20090124970 | Disposable syringe with built-in carpule - A disposable syringe includes a pre-filled carpule which is retained in a barrel by means of a lunge member, a ring grip and a carrier unit. A retaining mechanism is disposed to guard the carrier unit against movement away from a locked position. A needle assembly is connected to the carpule. A plunger is engaged with a seal member of the carpule to cooperate with a tubular wall to define a sealed chamber that is communicated with the needle assembly. After the plunger is turned relative to the barrel to move the carrier unit to the unlocked position, the carpule can be pressed forwardly to force the carrier unit to release the ring grip from the lunge member such that the needle assembly and the carpule are biased by a biasing member rearwardly to retract the needle cannula into the barrel. | 05-14-2009 |
20090124971 | Pre-filled disposable syringe - A disposable syringe includes a barrel with a bushing unit disposed on an inner surrounding surface thereof, a tubular grip unit in fluid-tight engagement with the bushing unit for holding a needle seat, a tubular plunger having a seal ring that is slidable on and in fluid-tight frictional engagement with the bushing unit so as to cooperate with the grip unit to define a medicament chamber, and a shield plug member in fluid-tight engagement with the grip unit and having a duct that communicates a needle cannula with the medicament chamber, thereby ensuring fluid-tightness of the medicament chamber. | 05-14-2009 |
Patent application number | Description | Published |
20080234635 | Disposable syringe guarded in a preuse position (II) - A disposable syringe includes a barrel, a needle assembly, a plunger, a press-fitting unit, and a spacer. The plunger is movable in the barrel to a retraction initiating position, where a front open plunger end is coupled with the needle assembly for withdrawal of the needle assembly into the plunger. An endcap is disposed to cover a rear open plunger end of the plunger. The press-fitting unit is disposed between the plunger and an inner barrel surface of the barrel to permit press-fit engagement between the plunger and the barrel immediately after the plunger is moved to the retraction initiating position. The spacer includes front and rear abutment surfaces detachably engaged with the barrel and the endcap in a preuse position. | 09-25-2008 |
20080234636 | Disposable syringe guarded in a preuse position (1) - A disposable syringe includes a barrel, a needle assembly, a plunger, and a spacer. A tubular catch extends rearwardly of the barrel to terminate at a peripheral edge. The needle assembly includes a needle cannula and a needle seat for securing the needle cannula. The plunger is movable in the barrel to a retraction initiating position, where a front open plunger end is coupled with the needle seat for withdrawal of the needle seat and the needle cannula into the plunger. An endcap is disposed to cover a rear open plunger end, and has a ring wall fittable in the catch. The spacer has front and rear abutment surfaces that detachably and respectively abut against the peripheral edge and a rim of the ring wall in a pre-use position to thereby prevent movement of the plunger to the retraction initiating position. | 09-25-2008 |
20080287876 | Intravenous catheter introducing device - An intravenous catheter introducing device includes a barrel, a tubular grip member disposed to hold a tubular member and a needle seat to permit a tip end of a needle cannula to extend forwardly of the barrel, a tubular plunger movable along a passage of the barrel, and a tubular receptacle retained in the plunger. Forward movement of the plunger permits engagement of a socket end of the receptacle with the rear plug portion of the tubular member and release of the grip member from the barrel such that the needle cannula can be retracted into the plunger. The tubular member has a pre-chamber so that flashback blood flowing thereinto is visible. | 11-20-2008 |
20090124970 | Disposable syringe with built-in carpule - A disposable syringe includes a pre-filled carpule which is retained in a barrel by means of a lunge member, a ring grip and a carrier unit. A retaining mechanism is disposed to guard the carrier unit against movement away from a locked position. A needle assembly is connected to the carpule. A plunger is engaged with a seal member of the carpule to cooperate with a tubular wall to define a sealed chamber that is communicated with the needle assembly. After the plunger is turned relative to the barrel to move the carrier unit to the unlocked position, the carpule can be pressed forwardly to force the carrier unit to release the ring grip from the lunge member such that the needle assembly and the carpule are biased by a biasing member rearwardly to retract the needle cannula into the barrel. | 05-14-2009 |
20090124971 | Pre-filled disposable syringe - A disposable syringe includes a barrel with a bushing unit disposed on an inner surrounding surface thereof, a tubular grip unit in fluid-tight engagement with the bushing unit for holding a needle seat, a tubular plunger having a seal ring that is slidable on and in fluid-tight frictional engagement with the bushing unit so as to cooperate with the grip unit to define a medicament chamber, and a shield plug member in fluid-tight engagement with the grip unit and having a duct that communicates a needle cannula with the medicament chamber, thereby ensuring fluid-tightness of the medicament chamber. | 05-14-2009 |