Injection device
First Claim
1. An injection device, comprising:
- a housing that receives a syringe having a discharge nozzle, the housing having an indicator opening;
a forward drive arranged to act upon the syringe on actuation to advance the syringe from a retracted position to an extended position thereby discharging contents of the syringe through the discharge nozzle;
a return drive arranged to act upon the syringe after the contents of the syringe have been discharged to withdraw the syringe from the extended position to the retracted position, wherein the return drive is arranged in the housing so that the return drive does not obscure an inspection of the contents of the syringe through the indicator opening; and
a support member in contacting juxtaposition with the housing, wherein the return drive is supported by the support member and the support member is formed of a transparent material and positioned between the indicator opening and syringe.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention concerns an injection device with a housing adapted to receive a syringe having a discharge nozzle, the housing having an indicator opening. There is a trigger and a forward drive arranged to act upon the syringe on actuation of the trigger to advance the syringe from a retracted position to an extended position thereby discharging the contents of the syringe through the discharge nozzle. A support member is in contacting juxtaposition with the housing and a return drive is supported by the support member and arranged to act upon the syringe after the contents of the syringe has been discharged so that the syringe can be withdrawn from the extended position to the retracted position. Advantageously, the support member is arranged in the housing so that the second drive does not obscure an inspection of the contents of the syringe through the indicator opening. Hence, it can be clearly determined whether the contents of the syringe have been expelled from the syringe.
436 Citations
7 Claims
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1. An injection device, comprising:
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a housing that receives a syringe having a discharge nozzle, the housing having an indicator opening; a forward drive arranged to act upon the syringe on actuation to advance the syringe from a retracted position to an extended position thereby discharging contents of the syringe through the discharge nozzle; a return drive arranged to act upon the syringe after the contents of the syringe have been discharged to withdraw the syringe from the extended position to the retracted position, wherein the return drive is arranged in the housing so that the return drive does not obscure an inspection of the contents of the syringe through the indicator opening; and a support member in contacting juxtaposition with the housing, wherein the return drive is supported by the support member and the support member is formed of a transparent material and positioned between the indicator opening and syringe. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification