APPARATUS AND METHODS FOR INJECTING HIGH VISCOSITY DERMAL FILLERS
First Claim
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1. An apparatus, comprising:
- a medicament container having a piston movably disposed therein such that the medicament container is divided into a first portion and a second portion, the first portion configured to contain a medicament;
a needle coupled to the medicament container such that the needle is in fluid communication with the first portion of the medicament container;
an energy source operatively coupled to the piston, the energy source configured to produce a kinetic energy to move the piston within the medicament container such that the medicament having a viscosity of at least 1000 centipoise can be conveyed from the first portion of the medicament container through a distal end of the needle at a flow rate of at least 0.02 cubic centimeters per minute; and
a regulator configured to regulate the flow rate of the medicament through the distal end of the needle.
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Abstract
A method includes inserting a distal end portion of a needle of a medical injector into a skin of a body. An energy source operatively coupled to the medical injector is actuated such that a dermal filler is conveyed from the medical injector into the skin through the distal end portion of the needle. The distal end portion of the needle is moved within the skin during the actuating.
101 Citations
20 Claims
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1. An apparatus, comprising:
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a medicament container having a piston movably disposed therein such that the medicament container is divided into a first portion and a second portion, the first portion configured to contain a medicament; a needle coupled to the medicament container such that the needle is in fluid communication with the first portion of the medicament container; an energy source operatively coupled to the piston, the energy source configured to produce a kinetic energy to move the piston within the medicament container such that the medicament having a viscosity of at least 1000 centipoise can be conveyed from the first portion of the medicament container through a distal end of the needle at a flow rate of at least 0.02 cubic centimeters per minute; and a regulator configured to regulate the flow rate of the medicament through the distal end of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a medical injector configured to contain a dermal filler, the medical injector including a needle defining a lumen therethrough having a nominal inner diameter of less than approximately 0.310 millimeters, the needle having a length of at least 17 millimeters; a pressurized fluid source operatively coupled to the medical injector, a pressurized fluid from the pressurized fluid source having a pressure of at least 345 kilopascals, the pressurized fluid configured to actuate the medical injector such that the dermal filler can be conveyed from the medical injector through the lumen of the needle; and a regulator configured to regulate the flow rate of the dermal filler through the lumen of the needle. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification