PREPARATION OF THE SYRINGE.The plunger should be removed from the syringe and the instrument in two parts should be thoroughly boiled before filling. It should be scrubbed with soap and water if dirty or corroded before it is dropped into the boiling water. After boiling for a half hour the barrel of the syringe which is closed anteriorly, except for the needle opening, is held up and the melted paraffin poured in until the instrument is quite full, then the plunger is fitted in and pressed down until it is possible to assemble the instrument ready for use.Needles should be boiled. Leather washers when not in use should be kept in solutions of alcohol.Preparations for operation, such as sterilizing syringe and needles should be done hours before operation. If the sterilized loaded syringe isplaced in a sterile towel it may be kept for days and then before use to insure sterilization it should be soaked in a seventy per cent solution of alcohol. If a needle is attached to the syringe when it is thrown in the alcohol solution it will be found that the paraffin in the syringe will not be affected by the alcohol. The instrument may be used from the alcohol without even drying it.Before inserting the needle for the injection of the paraffin start its flow and observe that the paraffin is escaping from the needle in a perfectly smooth string.The same words as to preparation apply when the white vaseline is used. This agent should always be sterilized by heat before placing it in the syringe and when syringe and vaseline are sterile the exterior of the instrument may be re-sterilized at the time of using by alcohol soaking.Paraffin in the liquid state may be drawn from a large container directly into the syringe when the needle has been removed. The needle maythen be screwed in place and the instrument held with the point of the needle directly upward and pressure made upon the piston until all air escapes and the liquid paraffin begins to flow. Then the instrument may be allowed to cool and its contents to consolidate.Material injected at room temperature.All these injections are made with the material in the syringe at room temperature. The syringe may be left filled for days and not heated at all when the injections are finally made. In mid-winter if the syringe has been kept in a cold room its temperature may be so low that it may be advisable to warm it somewhat, but at an average temperature of seventy degrees Fahrenheit the mixture first described should flow freely through an ordinary hypodermic needle.
The plunger should be removed from the syringe and the instrument in two parts should be thoroughly boiled before filling. It should be scrubbed with soap and water if dirty or corroded before it is dropped into the boiling water. After boiling for a half hour the barrel of the syringe which is closed anteriorly, except for the needle opening, is held up and the melted paraffin poured in until the instrument is quite full, then the plunger is fitted in and pressed down until it is possible to assemble the instrument ready for use.
Needles should be boiled. Leather washers when not in use should be kept in solutions of alcohol.
Preparations for operation, such as sterilizing syringe and needles should be done hours before operation. If the sterilized loaded syringe isplaced in a sterile towel it may be kept for days and then before use to insure sterilization it should be soaked in a seventy per cent solution of alcohol. If a needle is attached to the syringe when it is thrown in the alcohol solution it will be found that the paraffin in the syringe will not be affected by the alcohol. The instrument may be used from the alcohol without even drying it.
Before inserting the needle for the injection of the paraffin start its flow and observe that the paraffin is escaping from the needle in a perfectly smooth string.
The same words as to preparation apply when the white vaseline is used. This agent should always be sterilized by heat before placing it in the syringe and when syringe and vaseline are sterile the exterior of the instrument may be re-sterilized at the time of using by alcohol soaking.
Paraffin in the liquid state may be drawn from a large container directly into the syringe when the needle has been removed. The needle maythen be screwed in place and the instrument held with the point of the needle directly upward and pressure made upon the piston until all air escapes and the liquid paraffin begins to flow. Then the instrument may be allowed to cool and its contents to consolidate.
All these injections are made with the material in the syringe at room temperature. The syringe may be left filled for days and not heated at all when the injections are finally made. In mid-winter if the syringe has been kept in a cold room its temperature may be so low that it may be advisable to warm it somewhat, but at an average temperature of seventy degrees Fahrenheit the mixture first described should flow freely through an ordinary hypodermic needle.