MEDICAL SUBSTANCE TRANSFER SYSTEM

• US 20100121305A1
• Filed: 01/15/2010
• Published: 05/13/2010
• Est. Priority Date: 05/13/2005
• Status: Active Grant

• Current Assignee: Solventum Intellectual Properties Company (Solventum Corp.)
• Original Assignee: Bob Rogers
• Inventors: Rogers, Bob
• Granted Patent: US 8,157,784 B2
• Time in Patent Office: Days
• US Class Current: 604/403
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking
• CPC Class Codes: A61B 2090/08021 of the patient or his organs
• CPC Class Codes: A61J 1/201 having one piercing end
• CPC Class Codes: A61J 1/2044 having slits
• CPC Class Codes: A61J 1/2051 having tap means, e.g. tap means activated by sliding
• CPC Class Codes: A61J 1/2089 Containers or vials which are to be joined to each other in order to mix their contents combinations of vial and syringe for mixing their contents A61J1/2096
• CPC Class Codes: A61M 2039/267 having a sealing sleeve around a tubular or solid stem portion of the connector
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24
• CPC Class Codes: B01L 2200/082 Handling hazardous material
• CPC Class Codes: B01L 2200/085 Protection against injuring the user
• CPC Class Codes: B01L 2200/142 Preventing evaporation
• CPC Class Codes: B01L 3/0275 Interchangeable or disposable dispensing tips
• CPC Class Codes: G01N 35/1079 with means for piercing stoppers or septums
• CPC Class Codes: G01N 35/1095 for supplying the samples to flow-through analysers for a specific analyser see relevant groups, e.g. under G01N15/00, G01N21/00, G01N27/00, G01N30/00, H01J49/00

Abstract

Disclosed is a fluid transfer system for transferring a substance from one vessel to another vessel while avoiding leakage of liquid and gas contaminants. The transfer system includes a needle safe design that is facilitated by a housing that shrouds a tip of a fluid transfer cannula such that the cannula tip is not exposed for inadvertent puncture. This feature may also be enhanced by use of a blunt tipped cannula. The fluid transfer system permits multiple access by enabling the easy swabbing of a septum prior to use.

Claims

1. A medical substance transfer system, comprising:

(a) a transfer device including;

(1) a transfer housing defining an interior chamber;

(2) a first septum movably disposed in a distal end of the chamber in a sealing relationship with the chamber, the first septum having a distal surface at or near a distal edge of the transfer housing;

(3) a cannula extending through the chamber, and wherein, when the transfer device is uncoupled from the receiver device, a distal tip of the cannula is positioned proximal of the distal edge of the transfer housing;

(4) a biasing member inside the chamber, the biasing member adapted to bias the first septum toward the distal end of the chamber; and

(b) a receiver device adapted to removably couple to the transfer device, the receiver device including;

(1) a receiver housing defining an interior passageway, wherein the interior passageway is in communication with a distal tip of the cannula when the transfer device and receiver device are coupled to one another;

(2) a second septum disposed in a proximal region of the housing, the second septum having a proximal surface at or near a proximal edge of the housing, wherein the proximal surface of the second septum is in juxtaposed contact with the distal surface of the first septum when the transfer device and receiver device are coupled to one another and wherein the second septum provides a barrier to prevent fluid from escaping from the interior passageway of the receiver housing.

2. A system as in claim 1, wherein the first and second septums contact the cannula when the transfer device and receiver device are coupled to one another.

3. A system as in claim 1, wherein a distal tip of the cannula is positioned inside the chamber in the first housing when the transfer device and receiver device are uncoupled from one another.

4. A system as in claim 1, wherein the distal tip cannula is at least partially positioned inside the first septum when the transfer device and receiver device are uncoupled from one another.

5. A system as in claim 1, wherein the first and second septums have slits for passage of the cannula therethrough, and wherein the first and second septums comprise resilient material that provides bulk resilience to maintain a closed, default state of the slits.

6. A system as in claim 1, wherein the cannula has a blunt distal tip.

7. A system as in claim 1, wherein at least a portion of the first septum moves in a proximal direction through the interior chamber of transfer housing during coupling of the receiver device to the transfer device, and wherein the first septum maintains a sealed relationship with the chamber during such movement.

8. A system as in claim 1, wherein the transfer device attaches to a first vessel such that the cannula fluidly communicates with the first vessel, and wherein the receiver device attaches to a second vessel such that the interior passageway of the receiver housing communicates with the second vessel, and wherein upon connection of the transfer device to the receiver device the cannula and interior passageway collectively provide a passageway between the first and second vessels.

9. A system as in claim 1, wherein the first septum and the biasing member are separate devices.

10. A system as in claim 1, wherein the first septum has a distal surface substantially flush with the distal edge of the transfer housing.

11. A system as in claim 1, wherein the second septum has a proximal surface substantially flush with the proximal edge of the transfer housing.

12. A system as in claim 1, wherein the distal surface of the first septum is flat.

13. A system as in claim 1, wherein the proximal surface of the second septum is flat.