Medical aspiration system

Claim 2

A vacuum curettage aspiration system for removing fluids and semi solids from a uterus comprising a collection bottle having a volume in the range of 50 to 500 milliliters; a cap connectable to said bottle; and an operator-operative valve mounted in said cap and having a seat for receiving a cannula, said valve providing on/off flow though passage from said cannula receiving seat to the interior of said bottle of said curettage system for removing fluids and semi solids from the uterus.

Claim 3

An apparatus according to claim 1 wherein said collection bottle is made of a transparent material, and has such cross-sectional and length dimensions that it may be readily manipulated by one hand.

Claim 4

An apparatus accordingto claim 1 wherein said bottle has a smooth cylindrical neck portion adjacent to said cap, about 2 inches in diameter, and 2 to 3 inches in length; and a body portion about 2 1/2 and 3 1/2 inches in diameter and 3 inches in length with a textured outer surface to facilitate gripping.

Claim 5

An apparatus according to claim 1 further comprising a tissue trap assembly mounted inside said collection bottle at one opening of said operator-operative valve.

Claim 6

A system according to claim 1 further comprising a negative pressure gauge for measuring the vacuum in said system having an input valve received in said cannula receiving seat and of such dimensions to hermetically fit in said seat, the gauge measuring the vacuum in said bottle by opening said valve and further comprising an operator-operative bleeder for permitting the passage of air into said vacuum bottle to lower residual vacuum level while measuring the vacuum in said bottle.

Claim 7

A system according to claim 1 adapted for uterine aspiration and wherein said system has a vacuum less than 0.2 atmosphere at the commencement of a procedure.

Claim 8

A system according to claim 6 wherein said bottle has a vacuum less than 0.1 atmosphere at the commencement of a procedure.

Claim 9

A system according to claim 1 wherein said bottle has a capacity between 300 and 400 milliliters.

Claim 10

A system according to claim 1 wherein said bottle has a capacity between 100 and 200 milliliters.

Claim 11

A vacuum aspiration system comprising a collection bottle; a removable cap connectable to said bottle; and an operator-operative valve mounted in said cap and having a seat for receiving a cannula, said valve providing on/off flow through passage from said cannula receiving seat to the interior of said bottle, said system further includes a one-way relief valve means for permitting the passage of entrapped air and steam from the bottle into the ambient atmosphere.

Claim 12

A vacuum aspiration system comprising a collection bottle; a removable cap connectable to said bottle; and an operator-operative valve mounted in said cap and having a seat for receiving a cannula, said valve providing on/off flow through passage from said cannula receiving seat to the interior of said bottle, said system further includes a one-way relief valve means for permitting the passage of entrapped air and steam from the bottle into the ambient atmosphere.

Claim 13

An apparatus according to claim 10 wherein said one-way relief valve means comprises a weighted check of such dimensions that it fits into said cannula receiving seat, whereby when said apparatus with the valve open is slightly filled with water and heated and steam is generated inside said bottle, said steam pushes entrapped air and steam against said weighted check and escapes, and when said apparatus is cooled, said weighted check is drawn tightly closed by atmospheric pressure through condensation of the steam inside said bottle.

Claim 14

A system according to claim 10 wherein said operator-operative valve has a housing with a central passageway extending from inside said cap to said cannula receiving seat, a transverse bore intersecting said central passageway, a spool ratatably mounted in said transverse bore having first and second passageways, and a handle connected to said spool for operator-operatively moving said ratatable spool between a first and second position; said one-way relief valve means includes a one-way valve connection extending from said transverse bore through said housing, said one-way valve permitting a unidirectional passage of gasses from said transverse bore to an outside of said housing; and said first passageway of said spool having a diameter equal to, and having its axis coplanar with the axis of said central passageway, and providing said open flow through passage from said cannual receiving seat to said bottle interior with said rotatable spool in said first position, and blocking said flow-through passage when in said second position; said second passageway of said spool extending from said first passageway to a side of said rotatable spool and providing another flow through passage from said inside of said bottle through said first passageway and said one-way valve to the outside of the housing with saiD rotatable spool in said second position.

Claim 15

An apparatus according to claim 12 wherein the axis of said central passageway, said transverse bore and said one-way valve are perpendicular to one another.

Claim 18

A vacuum curettage aspiration system for removing fluids and semi solids from the uterine cavity consisting of a hermetically tight collection bottle having a volume in the range of 50 to 500 milliliters and cap and having an operator-operative valve mounted in said cap, and said valve including a seat for receiving a cannula and providing on/off flow through passage from said cannula receiving seat to said collection bottle, said system having a vacuum less than 0.1 atmospheres at the commencement of a procedure.

Claim 19

A vacuum curettage aspiration system for removing fluids and semi solids from the uterine cavity consisting of a hermetically tight collection bottle having a volume in the range of 50 to 500 milliliters and cap and having an operator-operative valve mounted in said cap, and said valve including a seat for receiving a cannula and providing on/off flow through passage from said cannula receiving seat to said collection bottle, said system having a vacuum less than 0.1 atmospheres at the commencement of a procedure.