Medical device with high pressure quick disconnect handpiece
First Claim
Patent Images
1. A medical device having a high pressure fluid connection comprising:
- a first lumen adapted for fluid flow at a high pressure;
a second lumen adapted for fluid flow and arranged at least partially within the first lumen; and
a gasket positioned between the first lumen and the second lumen and constructed and arranged to create fluid impermeable seals between the gasket and the first lumen and between the gasket and the second lumen when the high pressure fluid flowing through the first lumen exerts a force upon the gasket.
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Abstract
A method and apparatus are provided for quickly connecting a handpiece to a pressurized fluid source. A hollow tube on the handpiece is inserted through an aperture in an annular gasket which is held in a chamber in a body. On application of pressurized fluid to the body, the gasket is pressed against the walls of the chamber, and against the tube, thereby channeling the pressurized fluid through the hollow tube. The handpiece is retained in connection with the body by a releasable connector, such as a latch. The handpiece can be removed and replaced by releasing and remaking the connection.
191 Citations
21 Claims
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1. A medical device having a high pressure fluid connection comprising:
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a first lumen adapted for fluid flow at a high pressure; a second lumen adapted for fluid flow and arranged at least partially within the first lumen; and a gasket positioned between the first lumen and the second lumen and constructed and arranged to create fluid impermeable seals between the gasket and the first lumen and between the gasket and the second lumen when the high pressure fluid flowing through the first lumen exerts a force upon the gasket. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A medical device having a quickly changeable connection between a high pressure fluid source and a hand piece, wherein the connection comprises:
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a thin tube having a lumen in fluid connection with a first fluid pathway extending through the hand piece; a chamber, the chamber having a first opening receiving the thin tube and a second opening in fluid connection with a second high pressure fluid pathway; a gasket in the chamber, the gasket having a base disposed adjacent to the first opening, and a passage through the base surrounding the thin tube, wherein the gasket has a first rim contacting the wall of the chamber and a second rim contacting the thin tube; and a latching mechanism to maintain the tube in the gasket. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for quickly changing hand pieces attached to a high pressure fluid source;
- the system comprising;
at least one hand piece carrying a portion of a latching mechanism and one of a connecting tube and a chamber having an aperture leading to a gasket; a high pressure fluid source carrying a complementary portion of a latching mechanism and the other of a connecting tube and a chamber having an aperture leading to a gasket; wherein the gasket has an inner rim and an outer rim and the inner and outer rims engage the connecting tube and the wall of the chamber, respectively, when the connecting tube is inserted in the chamber; and wherein the gasket is configured to create a fluid impermeable seal between the gasket and the connecting tube when the high pressure fluid applies pressure to the gasket.
- the system comprising;
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21. A gasket for a high-pressure connector in a surgical instrument or system, the gasket comprising:
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an annular member for surrounding a high pressure tube admitted into a chamber; an inner rim on the annular member that seals tightly against the high pressure tube when pressure is applied to the chamber; and an outer rim on the annular member that seals tightly against an inner wall of the chamber when pressure is applied to the chamber.
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Specification