# US 4,391,280 A · Enema apparata improvements relating to double contrast studies

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- Number: US 4,391,280 A
- Document ID: US4391280A
- Status: Granted
- Kind: A
- Application number: 06/326,015
- Filed: 1981-11-30
- Granted: 1983-07-05
- Earliest claimed: 1979-05-16
- Inventors: Roscoe E. Miller
- Web page: https://patentgrep.com/patent/US4391280A

## CPC

- A61M 31/005: {for contrast media}
- A61M 3/0279: {Cannula; Nozzles; Tips; their connection means}
- A61M 2205/075: Bulb type
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}

## Abstract

An enema administering apparatus insertable into the rectum for delivery of a contrast medium to internal portions of a patient's anatomy includes an enema tube joined to an enema tip wherein the enema tube and enema tip have a common contrast medium passageway extending therethrough and an air passageway which is exterior of the contrast medium passageway and is able to be coupled to a source of air for double contrast studies. The air passageway may be a passageway disposed within the enema tube and enema tip construction or may be a separate tubing member joined therewith in a suitable arrangement to introduce air for the double contrast studies once the barium has been evacuated from the patient. Air introduction means and contrast medium introduction means are provided by various arrangements suitable for use with the main enema administering apparatus concept disclosed.

## Claims

### Claim 1

An enema-administering apparatus insertable into the rectum for delivery of a contrast medium to internal portions of a patient's anatomy, for the subsequent removal of said contrast medium, and for the delivery of air to said internal portions of the anatomy after the contrast medium has been removed, said enema-administering apparatus comprising:
a generally tubular stem having a free end, an opposite insertable end and a first contrast medium passageway extending therethrough from a contrast medium inject location adjacent said free end to a contrast medium discharge location adjacent said insertable end, said tubular stem further having a first air passageway disposed completely external of said first contrast medium passageway, said first air passageway extending through said tubular stem from an air inject location adjacent said free end to an air discharge location adjacent said insertable end;
an enlarged hollow tip cooperatively arranged with said stem and disposed adjacent said insertable end, said hollow tip having a contrast medium exit aperture disposed therein and defining a second contrast medium passageway arranged in flow communication with and disposed between said first contrast medium passageway and said contrast medium exit aperture, said tip further having an air delivery outlet opening disposed therein and defining a second air passageway which is disposed completely external of said second contrast medium passageway and arranged in flow communication with and disposed between said first air passageway and said air delivery outlet opening;
said air delivery outlet opening is spaced apart from said contrast medium exit aperture so as to avoid the entry of said contrast medium into said second air passageway.